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brcmfmac: add comment block in brcmf_sdio_buscore_read()
[linux-2.6/btrfs-unstable.git] / drivers / net / wireless / mac80211_hwsim.c
blob78367373185f3ce7ec6a90b4205c41b04304132e
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/platform_device.h>
29 #include <linux/debugfs.h>
30 #include <linux/module.h>
31 #include <linux/ktime.h>
32 #include <net/genetlink.h>
33 #include <net/net_namespace.h>
34 #include <net/netns/generic.h>
35 #include "mac80211_hwsim.h"
36
37 #define WARN_QUEUE 100
38 #define MAX_QUEUE 200
39
40 MODULE_AUTHOR("Jouni Malinen");
41 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
42 MODULE_LICENSE("GPL");
43
44 static int radios = 2;
45 module_param(radios, int, 0444);
46 MODULE_PARM_DESC(radios, "Number of simulated radios");
47
48 static int channels = 1;
49 module_param(channels, int, 0444);
50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
51
52 static bool paged_rx = false;
53 module_param(paged_rx, bool, 0644);
54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
55
56 static bool rctbl = false;
57 module_param(rctbl, bool, 0444);
58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
59
60 static bool support_p2p_device = true;
61 module_param(support_p2p_device, bool, 0444);
62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
63
64 /**
65 * enum hwsim_regtest - the type of regulatory tests we offer
66 *
67 * These are the different values you can use for the regtest
68 * module parameter. This is useful to help test world roaming
69 * and the driver regulatory_hint() call and combinations of these.
70 * If you want to do specific alpha2 regulatory domain tests simply
71 * use the userspace regulatory request as that will be respected as
72 * well without the need of this module parameter. This is designed
73 * only for testing the driver regulatory request, world roaming
74 * and all possible combinations.
75 *
76 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
77 * this is the default value.
78 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
79 * hint, only one driver regulatory hint will be sent as such the
80 * secondary radios are expected to follow.
81 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
82 * request with all radios reporting the same regulatory domain.
83 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
84 * different regulatory domains requests. Expected behaviour is for
85 * an intersection to occur but each device will still use their
86 * respective regulatory requested domains. Subsequent radios will
87 * use the resulting intersection.
88 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
89 * this by using a custom beacon-capable regulatory domain for the first
90 * radio. All other device world roam.
91 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
92 * domain requests. All radios will adhere to this custom world regulatory
93 * domain.
94 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
95 * domain requests. The first radio will adhere to the first custom world
96 * regulatory domain, the second one to the second custom world regulatory
97 * domain. All other devices will world roam.
98 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
99 * settings, only the first radio will send a regulatory domain request
100 * and use strict settings. The rest of the radios are expected to follow.
101 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
102 * settings. All radios will adhere to this.
103 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
104 * domain settings, combined with secondary driver regulatory domain
105 * settings. The first radio will get a strict regulatory domain setting
106 * using the first driver regulatory request and the second radio will use
107 * non-strict settings using the second driver regulatory request. All
108 * other devices should follow the intersection created between the
109 * first two.
110 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
111 * at least 6 radios for a complete test. We will test in this order:
112 * 1 - driver custom world regulatory domain
113 * 2 - second custom world regulatory domain
114 * 3 - first driver regulatory domain request
115 * 4 - second driver regulatory domain request
116 * 5 - strict regulatory domain settings using the third driver regulatory
117 * domain request
118 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
119 * regulatory requests.
120 */
121 enum hwsim_regtest {
122 HWSIM_REGTEST_DISABLED = 0,
123 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
124 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
125 HWSIM_REGTEST_DIFF_COUNTRY = 3,
126 HWSIM_REGTEST_WORLD_ROAM = 4,
127 HWSIM_REGTEST_CUSTOM_WORLD = 5,
128 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
129 HWSIM_REGTEST_STRICT_FOLLOW = 7,
130 HWSIM_REGTEST_STRICT_ALL = 8,
131 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
132 HWSIM_REGTEST_ALL = 10,
133 };
134
135 /* Set to one of the HWSIM_REGTEST_* values above */
136 static int regtest = HWSIM_REGTEST_DISABLED;
137 module_param(regtest, int, 0444);
138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
139
140 static const char *hwsim_alpha2s[] = {
141 "FI",
142 "AL",
143 "US",
144 "DE",
145 "JP",
146 "AL",
147 };
148
149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
150 .n_reg_rules = 4,
151 .alpha2 = "99",
152 .reg_rules = {
153 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
154 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
155 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
156 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
157 }
158 };
159
160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
161 .n_reg_rules = 2,
162 .alpha2 = "99",
163 .reg_rules = {
164 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
165 REG_RULE(5725-10, 5850+10, 40, 0, 30,
166 NL80211_RRF_NO_IR),
167 }
168 };
169
170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
171 &hwsim_world_regdom_custom_01,
172 &hwsim_world_regdom_custom_02,
173 };
174
175 struct hwsim_vif_priv {
176 u32 magic;
177 u8 bssid[ETH_ALEN];
178 bool assoc;
179 bool bcn_en;
180 u16 aid;
181 };
182
183 #define HWSIM_VIF_MAGIC 0x69537748
184
185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
186 {
187 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
188 WARN(vp->magic != HWSIM_VIF_MAGIC,
189 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
190 vif, vp->magic, vif->addr, vif->type, vif->p2p);
191 }
192
193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
194 {
195 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
196 vp->magic = HWSIM_VIF_MAGIC;
197 }
198
199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
200 {
201 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
202 vp->magic = 0;
203 }
204
205 struct hwsim_sta_priv {
206 u32 magic;
207 };
208
209 #define HWSIM_STA_MAGIC 0x6d537749
210
211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
212 {
213 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
214 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
215 }
216
217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
218 {
219 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
220 sp->magic = HWSIM_STA_MAGIC;
221 }
222
223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
224 {
225 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
226 sp->magic = 0;
227 }
228
229 struct hwsim_chanctx_priv {
230 u32 magic;
231 };
232
233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
234
235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
236 {
237 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
238 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
239 }
240
241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
242 {
243 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
244 cp->magic = HWSIM_CHANCTX_MAGIC;
245 }
246
247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
248 {
249 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
250 cp->magic = 0;
251 }
252
253 static unsigned int hwsim_net_id;
254
255 static int hwsim_netgroup;
256
257 struct hwsim_net {
258 int netgroup;
259 u32 wmediumd;
260 };
261
262 static inline int hwsim_net_get_netgroup(struct net *net)
263 {
264 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
265
266 return hwsim_net->netgroup;
267 }
268
269 static inline void hwsim_net_set_netgroup(struct net *net)
270 {
271 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
272
273 hwsim_net->netgroup = hwsim_netgroup++;
274 }
275
276 static inline u32 hwsim_net_get_wmediumd(struct net *net)
277 {
278 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
279
280 return hwsim_net->wmediumd;
281 }
282
283 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
284 {
285 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
286
287 hwsim_net->wmediumd = portid;
288 }
289
290 static struct class *hwsim_class;
291
292 static struct net_device *hwsim_mon; /* global monitor netdev */
293
294 #define CHAN2G(_freq) { \
295 .band = NL80211_BAND_2GHZ, \
296 .center_freq = (_freq), \
297 .hw_value = (_freq), \
298 .max_power = 20, \
299 }
300
301 #define CHAN5G(_freq) { \
302 .band = NL80211_BAND_5GHZ, \
303 .center_freq = (_freq), \
304 .hw_value = (_freq), \
305 .max_power = 20, \
306 }
307
308 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
309 CHAN2G(2412), /* Channel 1 */
310 CHAN2G(2417), /* Channel 2 */
311 CHAN2G(2422), /* Channel 3 */
312 CHAN2G(2427), /* Channel 4 */
313 CHAN2G(2432), /* Channel 5 */
314 CHAN2G(2437), /* Channel 6 */
315 CHAN2G(2442), /* Channel 7 */
316 CHAN2G(2447), /* Channel 8 */
317 CHAN2G(2452), /* Channel 9 */
318 CHAN2G(2457), /* Channel 10 */
319 CHAN2G(2462), /* Channel 11 */
320 CHAN2G(2467), /* Channel 12 */
321 CHAN2G(2472), /* Channel 13 */
322 CHAN2G(2484), /* Channel 14 */
323 };
324
325 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
326 CHAN5G(5180), /* Channel 36 */
327 CHAN5G(5200), /* Channel 40 */
328 CHAN5G(5220), /* Channel 44 */
329 CHAN5G(5240), /* Channel 48 */
330
331 CHAN5G(5260), /* Channel 52 */
332 CHAN5G(5280), /* Channel 56 */
333 CHAN5G(5300), /* Channel 60 */
334 CHAN5G(5320), /* Channel 64 */
335
336 CHAN5G(5500), /* Channel 100 */
337 CHAN5G(5520), /* Channel 104 */
338 CHAN5G(5540), /* Channel 108 */
339 CHAN5G(5560), /* Channel 112 */
340 CHAN5G(5580), /* Channel 116 */
341 CHAN5G(5600), /* Channel 120 */
342 CHAN5G(5620), /* Channel 124 */
343 CHAN5G(5640), /* Channel 128 */
344 CHAN5G(5660), /* Channel 132 */
345 CHAN5G(5680), /* Channel 136 */
346 CHAN5G(5700), /* Channel 140 */
347
348 CHAN5G(5745), /* Channel 149 */
349 CHAN5G(5765), /* Channel 153 */
350 CHAN5G(5785), /* Channel 157 */
351 CHAN5G(5805), /* Channel 161 */
352 CHAN5G(5825), /* Channel 165 */
353 CHAN5G(5845), /* Channel 169 */
354 };
355
356 static const struct ieee80211_rate hwsim_rates[] = {
357 { .bitrate = 10 },
358 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
359 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
360 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
361 { .bitrate = 60 },
362 { .bitrate = 90 },
363 { .bitrate = 120 },
364 { .bitrate = 180 },
365 { .bitrate = 240 },
366 { .bitrate = 360 },
367 { .bitrate = 480 },
368 { .bitrate = 540 }
369 };
370
371 #define OUI_QCA 0x001374
372 #define QCA_NL80211_SUBCMD_TEST 1
373 enum qca_nl80211_vendor_subcmds {
374 QCA_WLAN_VENDOR_ATTR_TEST = 8,
375 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
376 };
377
378 static const struct nla_policy
379 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
380 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
381 };
382
383 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
384 struct wireless_dev *wdev,
385 const void *data, int data_len)
386 {
387 struct sk_buff *skb;
388 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
389 int err;
390 u32 val;
391
392 err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
393 hwsim_vendor_test_policy, NULL);
394 if (err)
395 return err;
396 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
397 return -EINVAL;
398 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
399 wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
400
401 /* Send a vendor event as a test. Note that this would not normally be
402 * done within a command handler, but rather, based on some other
403 * trigger. For simplicity, this command is used to trigger the event
404 * here.
405 *
406 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
407 */
408 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
409 if (skb) {
410 /* skb_put() or nla_put() will fill up data within
411 * NL80211_ATTR_VENDOR_DATA.
412 */
413
414 /* Add vendor data */
415 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
416
417 /* Send the event - this will call nla_nest_end() */
418 cfg80211_vendor_event(skb, GFP_KERNEL);
419 }
420
421 /* Send a response to the command */
422 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
423 if (!skb)
424 return -ENOMEM;
425
426 /* skb_put() or nla_put() will fill up data within
427 * NL80211_ATTR_VENDOR_DATA
428 */
429 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
430
431 return cfg80211_vendor_cmd_reply(skb);
432 }
433
434 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
435 {
436 .info = { .vendor_id = OUI_QCA,
437 .subcmd = QCA_NL80211_SUBCMD_TEST },
438 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
439 .doit = mac80211_hwsim_vendor_cmd_test,
440 }
441 };
442
443 /* Advertise support vendor specific events */
444 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
445 { .vendor_id = OUI_QCA, .subcmd = 1 },
446 };
447
448 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
449 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
450 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
451 BIT(NL80211_IFTYPE_P2P_CLIENT) |
452 #ifdef CONFIG_MAC80211_MESH
453 BIT(NL80211_IFTYPE_MESH_POINT) |
454 #endif
455 BIT(NL80211_IFTYPE_AP) |
456 BIT(NL80211_IFTYPE_P2P_GO) },
457 /* must be last, see hwsim_if_comb */
458 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
459 };
460
461 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
462 {
463 .limits = hwsim_if_limits,
464 /* remove the last entry which is P2P_DEVICE */
465 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
466 .max_interfaces = 2048,
467 .num_different_channels = 1,
468 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
469 BIT(NL80211_CHAN_WIDTH_20) |
470 BIT(NL80211_CHAN_WIDTH_40) |
471 BIT(NL80211_CHAN_WIDTH_80) |
472 BIT(NL80211_CHAN_WIDTH_160),
473 },
474 };
475
476 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
477 {
478 .limits = hwsim_if_limits,
479 .n_limits = ARRAY_SIZE(hwsim_if_limits),
480 .max_interfaces = 2048,
481 .num_different_channels = 1,
482 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
483 BIT(NL80211_CHAN_WIDTH_20) |
484 BIT(NL80211_CHAN_WIDTH_40) |
485 BIT(NL80211_CHAN_WIDTH_80) |
486 BIT(NL80211_CHAN_WIDTH_160),
487 },
488 };
489
490 static spinlock_t hwsim_radio_lock;
491 static LIST_HEAD(hwsim_radios);
492 static int hwsim_radio_idx;
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 ieee80211_hw *hw;
503 struct device *dev;
504 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
505 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
506 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
507 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
508 struct ieee80211_iface_combination if_combination;
509
510 struct mac_address addresses[2];
511 int channels, idx;
512 bool use_chanctx;
513 bool destroy_on_close;
514 struct work_struct destroy_work;
515 u32 portid;
516 char alpha2[2];
517 const struct ieee80211_regdomain *regd;
518
519 struct ieee80211_channel *tmp_chan;
520 struct ieee80211_channel *roc_chan;
521 u32 roc_duration;
522 struct delayed_work roc_start;
523 struct delayed_work roc_done;
524 struct delayed_work hw_scan;
525 struct cfg80211_scan_request *hw_scan_request;
526 struct ieee80211_vif *hw_scan_vif;
527 int scan_chan_idx;
528 u8 scan_addr[ETH_ALEN];
529 struct {
530 struct ieee80211_channel *channel;
531 unsigned long next_start, start, end;
532 } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
533 ARRAY_SIZE(hwsim_channels_5ghz)];
534
535 struct ieee80211_channel *channel;
536 u64 beacon_int /* beacon interval in us */;
537 unsigned int rx_filter;
538 bool started, idle, scanning;
539 struct mutex mutex;
540 struct tasklet_hrtimer beacon_timer;
541 enum ps_mode {
542 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
543 } ps;
544 bool ps_poll_pending;
545 struct dentry *debugfs;
546
547 uintptr_t pending_cookie;
548 struct sk_buff_head pending; /* packets pending */
549 /*
550 * Only radios in the same group can communicate together (the
551 * channel has to match too). Each bit represents a group. A
552 * radio can be in more than one group.
553 */
554 u64 group;
555
556 /* group shared by radios created in the same netns */
557 int netgroup;
558 /* wmediumd portid responsible for netgroup of this radio */
559 u32 wmediumd;
560
561 /* difference between this hw's clock and the real clock, in usecs */
562 s64 tsf_offset;
563 s64 bcn_delta;
564 /* absolute beacon transmission time. Used to cover up "tx" delay. */
565 u64 abs_bcn_ts;
566
567 /* Stats */
568 u64 tx_pkts;
569 u64 rx_pkts;
570 u64 tx_bytes;
571 u64 rx_bytes;
572 u64 tx_dropped;
573 u64 tx_failed;
574 };
575
576
577 struct hwsim_radiotap_hdr {
578 struct ieee80211_radiotap_header hdr;
579 __le64 rt_tsft;
580 u8 rt_flags;
581 u8 rt_rate;
582 __le16 rt_channel;
583 __le16 rt_chbitmask;
584 } __packed;
585
586 struct hwsim_radiotap_ack_hdr {
587 struct ieee80211_radiotap_header hdr;
588 u8 rt_flags;
589 u8 pad;
590 __le16 rt_channel;
591 __le16 rt_chbitmask;
592 } __packed;
593
594 /* MAC80211_HWSIM netlink family */
595 static struct genl_family hwsim_genl_family;
596
597 enum hwsim_multicast_groups {
598 HWSIM_MCGRP_CONFIG,
599 };
600
601 static const struct genl_multicast_group hwsim_mcgrps[] = {
602 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
603 };
604
605 /* MAC80211_HWSIM netlink policy */
606
607 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
608 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
609 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
610 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
611 .len = IEEE80211_MAX_DATA_LEN },
612 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
613 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
614 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
615 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
616 .len = IEEE80211_TX_MAX_RATES *
617 sizeof(struct hwsim_tx_rate)},
618 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
619 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
620 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
621 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
622 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
623 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
624 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
625 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
626 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
627 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
628 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
629 };
630
631 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
632 struct sk_buff *skb,
633 struct ieee80211_channel *chan);
634
635 /* sysfs attributes */
636 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
637 {
638 struct mac80211_hwsim_data *data = dat;
639 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
640 struct sk_buff *skb;
641 struct ieee80211_pspoll *pspoll;
642
643 if (!vp->assoc)
644 return;
645
646 wiphy_dbg(data->hw->wiphy,
647 "%s: send PS-Poll to %pM for aid %d\n",
648 __func__, vp->bssid, vp->aid);
649
650 skb = dev_alloc_skb(sizeof(*pspoll));
651 if (!skb)
652 return;
653 pspoll = skb_put(skb, sizeof(*pspoll));
654 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
655 IEEE80211_STYPE_PSPOLL |
656 IEEE80211_FCTL_PM);
657 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
658 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
659 memcpy(pspoll->ta, mac, ETH_ALEN);
660
661 rcu_read_lock();
662 mac80211_hwsim_tx_frame(data->hw, skb,
663 rcu_dereference(vif->chanctx_conf)->def.chan);
664 rcu_read_unlock();
665 }
666
667 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
668 struct ieee80211_vif *vif, int ps)
669 {
670 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
671 struct sk_buff *skb;
672 struct ieee80211_hdr *hdr;
673
674 if (!vp->assoc)
675 return;
676
677 wiphy_dbg(data->hw->wiphy,
678 "%s: send data::nullfunc to %pM ps=%d\n",
679 __func__, vp->bssid, ps);
680
681 skb = dev_alloc_skb(sizeof(*hdr));
682 if (!skb)
683 return;
684 hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
685 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
686 IEEE80211_STYPE_NULLFUNC |
687 IEEE80211_FCTL_TODS |
688 (ps ? IEEE80211_FCTL_PM : 0));
689 hdr->duration_id = cpu_to_le16(0);
690 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
691 memcpy(hdr->addr2, mac, ETH_ALEN);
692 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
693
694 rcu_read_lock();
695 mac80211_hwsim_tx_frame(data->hw, skb,
696 rcu_dereference(vif->chanctx_conf)->def.chan);
697 rcu_read_unlock();
698 }
699
700
701 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
702 struct ieee80211_vif *vif)
703 {
704 struct mac80211_hwsim_data *data = dat;
705 hwsim_send_nullfunc(data, mac, vif, 1);
706 }
707
708 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
709 struct ieee80211_vif *vif)
710 {
711 struct mac80211_hwsim_data *data = dat;
712 hwsim_send_nullfunc(data, mac, vif, 0);
713 }
714
715 static int hwsim_fops_ps_read(void *dat, u64 *val)
716 {
717 struct mac80211_hwsim_data *data = dat;
718 *val = data->ps;
719 return 0;
720 }
721
722 static int hwsim_fops_ps_write(void *dat, u64 val)
723 {
724 struct mac80211_hwsim_data *data = dat;
725 enum ps_mode old_ps;
726
727 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
728 val != PS_MANUAL_POLL)
729 return -EINVAL;
730
731 if (val == PS_MANUAL_POLL) {
732 if (data->ps != PS_ENABLED)
733 return -EINVAL;
734 local_bh_disable();
735 ieee80211_iterate_active_interfaces_atomic(
736 data->hw, IEEE80211_IFACE_ITER_NORMAL,
737 hwsim_send_ps_poll, data);
738 local_bh_enable();
739 return 0;
740 }
741 old_ps = data->ps;
742 data->ps = val;
743
744 local_bh_disable();
745 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
746 ieee80211_iterate_active_interfaces_atomic(
747 data->hw, IEEE80211_IFACE_ITER_NORMAL,
748 hwsim_send_nullfunc_ps, data);
749 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
750 ieee80211_iterate_active_interfaces_atomic(
751 data->hw, IEEE80211_IFACE_ITER_NORMAL,
752 hwsim_send_nullfunc_no_ps, data);
753 }
754 local_bh_enable();
755
756 return 0;
757 }
758
759 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
760 "%llu\n");
761
762 static int hwsim_write_simulate_radar(void *dat, u64 val)
763 {
764 struct mac80211_hwsim_data *data = dat;
765
766 ieee80211_radar_detected(data->hw);
767
768 return 0;
769 }
770
771 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
772 hwsim_write_simulate_radar, "%llu\n");
773
774 static int hwsim_fops_group_read(void *dat, u64 *val)
775 {
776 struct mac80211_hwsim_data *data = dat;
777 *val = data->group;
778 return 0;
779 }
780
781 static int hwsim_fops_group_write(void *dat, u64 val)
782 {
783 struct mac80211_hwsim_data *data = dat;
784 data->group = val;
785 return 0;
786 }
787
788 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
789 hwsim_fops_group_read, hwsim_fops_group_write,
790 "%llx\n");
791
792 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
793 struct net_device *dev)
794 {
795 /* TODO: allow packet injection */
796 dev_kfree_skb(skb);
797 return NETDEV_TX_OK;
798 }
799
800 static inline u64 mac80211_hwsim_get_tsf_raw(void)
801 {
802 return ktime_to_us(ktime_get_real());
803 }
804
805 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
806 {
807 u64 now = mac80211_hwsim_get_tsf_raw();
808 return cpu_to_le64(now + data->tsf_offset);
809 }
810
811 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
812 struct ieee80211_vif *vif)
813 {
814 struct mac80211_hwsim_data *data = hw->priv;
815 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
816 }
817
818 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
819 struct ieee80211_vif *vif, u64 tsf)
820 {
821 struct mac80211_hwsim_data *data = hw->priv;
822 u64 now = mac80211_hwsim_get_tsf(hw, vif);
823 u32 bcn_int = data->beacon_int;
824 u64 delta = abs(tsf - now);
825
826 /* adjust after beaconing with new timestamp at old TBTT */
827 if (tsf > now) {
828 data->tsf_offset += delta;
829 data->bcn_delta = do_div(delta, bcn_int);
830 } else {
831 data->tsf_offset -= delta;
832 data->bcn_delta = -(s64)do_div(delta, bcn_int);
833 }
834 }
835
836 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
837 struct sk_buff *tx_skb,
838 struct ieee80211_channel *chan)
839 {
840 struct mac80211_hwsim_data *data = hw->priv;
841 struct sk_buff *skb;
842 struct hwsim_radiotap_hdr *hdr;
843 u16 flags;
844 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
845 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
846
847 if (WARN_ON(!txrate))
848 return;
849
850 if (!netif_running(hwsim_mon))
851 return;
852
853 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
854 if (skb == NULL)
855 return;
856
857 hdr = skb_push(skb, sizeof(*hdr));
858 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
859 hdr->hdr.it_pad = 0;
860 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
861 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
862 (1 << IEEE80211_RADIOTAP_RATE) |
863 (1 << IEEE80211_RADIOTAP_TSFT) |
864 (1 << IEEE80211_RADIOTAP_CHANNEL));
865 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
866 hdr->rt_flags = 0;
867 hdr->rt_rate = txrate->bitrate / 5;
868 hdr->rt_channel = cpu_to_le16(chan->center_freq);
869 flags = IEEE80211_CHAN_2GHZ;
870 if (txrate->flags & IEEE80211_RATE_ERP_G)
871 flags |= IEEE80211_CHAN_OFDM;
872 else
873 flags |= IEEE80211_CHAN_CCK;
874 hdr->rt_chbitmask = cpu_to_le16(flags);
875
876 skb->dev = hwsim_mon;
877 skb_reset_mac_header(skb);
878 skb->ip_summed = CHECKSUM_UNNECESSARY;
879 skb->pkt_type = PACKET_OTHERHOST;
880 skb->protocol = htons(ETH_P_802_2);
881 memset(skb->cb, 0, sizeof(skb->cb));
882 netif_rx(skb);
883 }
884
885
886 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
887 const u8 *addr)
888 {
889 struct sk_buff *skb;
890 struct hwsim_radiotap_ack_hdr *hdr;
891 u16 flags;
892 struct ieee80211_hdr *hdr11;
893
894 if (!netif_running(hwsim_mon))
895 return;
896
897 skb = dev_alloc_skb(100);
898 if (skb == NULL)
899 return;
900
901 hdr = skb_put(skb, sizeof(*hdr));
902 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
903 hdr->hdr.it_pad = 0;
904 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
905 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
906 (1 << IEEE80211_RADIOTAP_CHANNEL));
907 hdr->rt_flags = 0;
908 hdr->pad = 0;
909 hdr->rt_channel = cpu_to_le16(chan->center_freq);
910 flags = IEEE80211_CHAN_2GHZ;
911 hdr->rt_chbitmask = cpu_to_le16(flags);
912
913 hdr11 = skb_put(skb, 10);
914 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
915 IEEE80211_STYPE_ACK);
916 hdr11->duration_id = cpu_to_le16(0);
917 memcpy(hdr11->addr1, addr, ETH_ALEN);
918
919 skb->dev = hwsim_mon;
920 skb_reset_mac_header(skb);
921 skb->ip_summed = CHECKSUM_UNNECESSARY;
922 skb->pkt_type = PACKET_OTHERHOST;
923 skb->protocol = htons(ETH_P_802_2);
924 memset(skb->cb, 0, sizeof(skb->cb));
925 netif_rx(skb);
926 }
927
928 struct mac80211_hwsim_addr_match_data {
929 u8 addr[ETH_ALEN];
930 bool ret;
931 };
932
933 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
934 struct ieee80211_vif *vif)
935 {
936 struct mac80211_hwsim_addr_match_data *md = data;
937
938 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
939 md->ret = true;
940 }
941
942 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
943 const u8 *addr)
944 {
945 struct mac80211_hwsim_addr_match_data md = {
946 .ret = false,
947 };
948
949 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
950 return true;
951
952 memcpy(md.addr, addr, ETH_ALEN);
953
954 ieee80211_iterate_active_interfaces_atomic(data->hw,
955 IEEE80211_IFACE_ITER_NORMAL,
956 mac80211_hwsim_addr_iter,
957 &md);
958
959 return md.ret;
960 }
961
962 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
963 struct sk_buff *skb)
964 {
965 switch (data->ps) {
966 case PS_DISABLED:
967 return true;
968 case PS_ENABLED:
969 return false;
970 case PS_AUTO_POLL:
971 /* TODO: accept (some) Beacons by default and other frames only
972 * if pending PS-Poll has been sent */
973 return true;
974 case PS_MANUAL_POLL:
975 /* Allow unicast frames to own address if there is a pending
976 * PS-Poll */
977 if (data->ps_poll_pending &&
978 mac80211_hwsim_addr_match(data, skb->data + 4)) {
979 data->ps_poll_pending = false;
980 return true;
981 }
982 return false;
983 }
984
985 return true;
986 }
987
988 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
989 struct sk_buff *skb, int portid)
990 {
991 struct net *net;
992 bool found = false;
993 int res = -ENOENT;
994
995 rcu_read_lock();
996 for_each_net_rcu(net) {
997 if (data->netgroup == hwsim_net_get_netgroup(net)) {
998 res = genlmsg_unicast(net, skb, portid);
999 found = true;
1000 break;
1001 }
1002 }
1003 rcu_read_unlock();
1004
1005 if (!found)
1006 nlmsg_free(skb);
1007
1008 return res;
1009 }
1010
1011 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1012 struct sk_buff *my_skb,
1013 int dst_portid)
1014 {
1015 struct sk_buff *skb;
1016 struct mac80211_hwsim_data *data = hw->priv;
1017 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1018 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1019 void *msg_head;
1020 unsigned int hwsim_flags = 0;
1021 int i;
1022 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1023 uintptr_t cookie;
1024
1025 if (data->ps != PS_DISABLED)
1026 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1027 /* If the queue contains MAX_QUEUE skb's drop some */
1028 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1029 /* Droping until WARN_QUEUE level */
1030 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1031 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1032 data->tx_dropped++;
1033 }
1034 }
1035
1036 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1037 if (skb == NULL)
1038 goto nla_put_failure;
1039
1040 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1041 HWSIM_CMD_FRAME);
1042 if (msg_head == NULL) {
1043 pr_debug("mac80211_hwsim: problem with msg_head\n");
1044 goto nla_put_failure;
1045 }
1046
1047 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1048 ETH_ALEN, data->addresses[1].addr))
1049 goto nla_put_failure;
1050
1051 /* We get the skb->data */
1052 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1053 goto nla_put_failure;
1054
1055 /* We get the flags for this transmission, and we translate them to
1056 wmediumd flags */
1057
1058 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1059 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1060
1061 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1062 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1063
1064 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1065 goto nla_put_failure;
1066
1067 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1068 goto nla_put_failure;
1069
1070 /* We get the tx control (rate and retries) info*/
1071
1072 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1073 tx_attempts[i].idx = info->status.rates[i].idx;
1074 tx_attempts[i].count = info->status.rates[i].count;
1075 }
1076
1077 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1078 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1079 tx_attempts))
1080 goto nla_put_failure;
1081
1082 /* We create a cookie to identify this skb */
1083 data->pending_cookie++;
1084 cookie = data->pending_cookie;
1085 info->rate_driver_data[0] = (void *)cookie;
1086 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1087 goto nla_put_failure;
1088
1089 genlmsg_end(skb, msg_head);
1090 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1091 goto err_free_txskb;
1092
1093 /* Enqueue the packet */
1094 skb_queue_tail(&data->pending, my_skb);
1095 data->tx_pkts++;
1096 data->tx_bytes += my_skb->len;
1097 return;
1098
1099 nla_put_failure:
1100 nlmsg_free(skb);
1101 err_free_txskb:
1102 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1103 ieee80211_free_txskb(hw, my_skb);
1104 data->tx_failed++;
1105 }
1106
1107 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1108 struct ieee80211_channel *c2)
1109 {
1110 if (!c1 || !c2)
1111 return false;
1112
1113 return c1->center_freq == c2->center_freq;
1114 }
1115
1116 struct tx_iter_data {
1117 struct ieee80211_channel *channel;
1118 bool receive;
1119 };
1120
1121 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1122 struct ieee80211_vif *vif)
1123 {
1124 struct tx_iter_data *data = _data;
1125
1126 if (!vif->chanctx_conf)
1127 return;
1128
1129 if (!hwsim_chans_compat(data->channel,
1130 rcu_dereference(vif->chanctx_conf)->def.chan))
1131 return;
1132
1133 data->receive = true;
1134 }
1135
1136 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1137 {
1138 /*
1139 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1140 * e.g. like this:
1141 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1142 * (but you should use a valid OUI, not that)
1143 *
1144 * If anyone wants to 'donate' a radiotap OUI/subns code
1145 * please send a patch removing this #ifdef and changing
1146 * the values accordingly.
1147 */
1148 #ifdef HWSIM_RADIOTAP_OUI
1149 struct ieee80211_vendor_radiotap *rtap;
1150
1151 /*
1152 * Note that this code requires the headroom in the SKB
1153 * that was allocated earlier.
1154 */
1155 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1156 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1157 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1158 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1159 rtap->subns = 127;
1160
1161 /*
1162 * Radiotap vendor namespaces can (and should) also be
1163 * split into fields by using the standard radiotap
1164 * presence bitmap mechanism. Use just BIT(0) here for
1165 * the presence bitmap.
1166 */
1167 rtap->present = BIT(0);
1168 /* We have 8 bytes of (dummy) data */
1169 rtap->len = 8;
1170 /* For testing, also require it to be aligned */
1171 rtap->align = 8;
1172 /* And also test that padding works, 4 bytes */
1173 rtap->pad = 4;
1174 /* push the data */
1175 memcpy(rtap->data, "ABCDEFGH", 8);
1176 /* make sure to clear padding, mac80211 doesn't */
1177 memset(rtap->data + 8, 0, 4);
1178
1179 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1180 #endif
1181 }
1182
1183 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1184 struct sk_buff *skb,
1185 struct ieee80211_channel *chan)
1186 {
1187 struct mac80211_hwsim_data *data = hw->priv, *data2;
1188 bool ack = false;
1189 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1190 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1191 struct ieee80211_rx_status rx_status;
1192 u64 now;
1193
1194 memset(&rx_status, 0, sizeof(rx_status));
1195 rx_status.flag |= RX_FLAG_MACTIME_START;
1196 rx_status.freq = chan->center_freq;
1197 rx_status.band = chan->band;
1198 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1199 rx_status.rate_idx =
1200 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1201 rx_status.nss =
1202 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1203 rx_status.encoding = RX_ENC_VHT;
1204 } else {
1205 rx_status.rate_idx = info->control.rates[0].idx;
1206 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1207 rx_status.encoding = RX_ENC_HT;
1208 }
1209 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1210 rx_status.bw = RATE_INFO_BW_40;
1211 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1212 rx_status.bw = RATE_INFO_BW_80;
1213 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1214 rx_status.bw = RATE_INFO_BW_160;
1215 else
1216 rx_status.bw = RATE_INFO_BW_20;
1217 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1218 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1219 /* TODO: simulate real signal strength (and optional packet loss) */
1220 rx_status.signal = -50;
1221 if (info->control.vif)
1222 rx_status.signal += info->control.vif->bss_conf.txpower;
1223
1224 if (data->ps != PS_DISABLED)
1225 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1226
1227 /* release the skb's source info */
1228 skb_orphan(skb);
1229 skb_dst_drop(skb);
1230 skb->mark = 0;
1231 secpath_reset(skb);
1232 nf_reset(skb);
1233
1234 /*
1235 * Get absolute mactime here so all HWs RX at the "same time", and
1236 * absolute TX time for beacon mactime so the timestamp matches.
1237 * Giving beacons a different mactime than non-beacons looks messy, but
1238 * it helps the Toffset be exact and a ~10us mactime discrepancy
1239 * probably doesn't really matter.
1240 */
1241 if (ieee80211_is_beacon(hdr->frame_control) ||
1242 ieee80211_is_probe_resp(hdr->frame_control))
1243 now = data->abs_bcn_ts;
1244 else
1245 now = mac80211_hwsim_get_tsf_raw();
1246
1247 /* Copy skb to all enabled radios that are on the current frequency */
1248 spin_lock(&hwsim_radio_lock);
1249 list_for_each_entry(data2, &hwsim_radios, list) {
1250 struct sk_buff *nskb;
1251 struct tx_iter_data tx_iter_data = {
1252 .receive = false,
1253 .channel = chan,
1254 };
1255
1256 if (data == data2)
1257 continue;
1258
1259 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1260 !hwsim_ps_rx_ok(data2, skb))
1261 continue;
1262
1263 if (!(data->group & data2->group))
1264 continue;
1265
1266 if (data->netgroup != data2->netgroup)
1267 continue;
1268
1269 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1270 !hwsim_chans_compat(chan, data2->channel)) {
1271 ieee80211_iterate_active_interfaces_atomic(
1272 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1273 mac80211_hwsim_tx_iter, &tx_iter_data);
1274 if (!tx_iter_data.receive)
1275 continue;
1276 }
1277
1278 /*
1279 * reserve some space for our vendor and the normal
1280 * radiotap header, since we're copying anyway
1281 */
1282 if (skb->len < PAGE_SIZE && paged_rx) {
1283 struct page *page = alloc_page(GFP_ATOMIC);
1284
1285 if (!page)
1286 continue;
1287
1288 nskb = dev_alloc_skb(128);
1289 if (!nskb) {
1290 __free_page(page);
1291 continue;
1292 }
1293
1294 memcpy(page_address(page), skb->data, skb->len);
1295 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1296 } else {
1297 nskb = skb_copy(skb, GFP_ATOMIC);
1298 if (!nskb)
1299 continue;
1300 }
1301
1302 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1303 ack = true;
1304
1305 rx_status.mactime = now + data2->tsf_offset;
1306
1307 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1308
1309 mac80211_hwsim_add_vendor_rtap(nskb);
1310
1311 data2->rx_pkts++;
1312 data2->rx_bytes += nskb->len;
1313 ieee80211_rx_irqsafe(data2->hw, nskb);
1314 }
1315 spin_unlock(&hwsim_radio_lock);
1316
1317 return ack;
1318 }
1319
1320 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1321 struct ieee80211_tx_control *control,
1322 struct sk_buff *skb)
1323 {
1324 struct mac80211_hwsim_data *data = hw->priv;
1325 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1326 struct ieee80211_hdr *hdr = (void *)skb->data;
1327 struct ieee80211_chanctx_conf *chanctx_conf;
1328 struct ieee80211_channel *channel;
1329 bool ack;
1330 u32 _portid;
1331
1332 if (WARN_ON(skb->len < 10)) {
1333 /* Should not happen; just a sanity check for addr1 use */
1334 ieee80211_free_txskb(hw, skb);
1335 return;
1336 }
1337
1338 if (!data->use_chanctx) {
1339 channel = data->channel;
1340 } else if (txi->hw_queue == 4) {
1341 channel = data->tmp_chan;
1342 } else {
1343 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1344 if (chanctx_conf)
1345 channel = chanctx_conf->def.chan;
1346 else
1347 channel = NULL;
1348 }
1349
1350 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1351 ieee80211_free_txskb(hw, skb);
1352 return;
1353 }
1354
1355 if (data->idle && !data->tmp_chan) {
1356 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1357 ieee80211_free_txskb(hw, skb);
1358 return;
1359 }
1360
1361 if (txi->control.vif)
1362 hwsim_check_magic(txi->control.vif);
1363 if (control->sta)
1364 hwsim_check_sta_magic(control->sta);
1365
1366 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1367 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1368 txi->control.rates,
1369 ARRAY_SIZE(txi->control.rates));
1370
1371 if (skb->len >= 24 + 8 &&
1372 ieee80211_is_probe_resp(hdr->frame_control)) {
1373 /* fake header transmission time */
1374 struct ieee80211_mgmt *mgmt;
1375 struct ieee80211_rate *txrate;
1376 u64 ts;
1377
1378 mgmt = (struct ieee80211_mgmt *)skb->data;
1379 txrate = ieee80211_get_tx_rate(hw, txi);
1380 ts = mac80211_hwsim_get_tsf_raw();
1381 mgmt->u.probe_resp.timestamp =
1382 cpu_to_le64(ts + data->tsf_offset +
1383 24 * 8 * 10 / txrate->bitrate);
1384 }
1385
1386 mac80211_hwsim_monitor_rx(hw, skb, channel);
1387
1388 /* wmediumd mode check */
1389 _portid = READ_ONCE(data->wmediumd);
1390
1391 if (_portid)
1392 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1393
1394 /* NO wmediumd detected, perfect medium simulation */
1395 data->tx_pkts++;
1396 data->tx_bytes += skb->len;
1397 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1398
1399 if (ack && skb->len >= 16)
1400 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1401
1402 ieee80211_tx_info_clear_status(txi);
1403
1404 /* frame was transmitted at most favorable rate at first attempt */
1405 txi->control.rates[0].count = 1;
1406 txi->control.rates[1].idx = -1;
1407
1408 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1409 txi->flags |= IEEE80211_TX_STAT_ACK;
1410 ieee80211_tx_status_irqsafe(hw, skb);
1411 }
1412
1413
1414 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1415 {
1416 struct mac80211_hwsim_data *data = hw->priv;
1417 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1418 data->started = true;
1419 return 0;
1420 }
1421
1422
1423 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1424 {
1425 struct mac80211_hwsim_data *data = hw->priv;
1426 data->started = false;
1427 tasklet_hrtimer_cancel(&data->beacon_timer);
1428 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1429 }
1430
1431
1432 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1433 struct ieee80211_vif *vif)
1434 {
1435 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1436 __func__, ieee80211_vif_type_p2p(vif),
1437 vif->addr);
1438 hwsim_set_magic(vif);
1439
1440 vif->cab_queue = 0;
1441 vif->hw_queue[IEEE80211_AC_VO] = 0;
1442 vif->hw_queue[IEEE80211_AC_VI] = 1;
1443 vif->hw_queue[IEEE80211_AC_BE] = 2;
1444 vif->hw_queue[IEEE80211_AC_BK] = 3;
1445
1446 return 0;
1447 }
1448
1449
1450 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1451 struct ieee80211_vif *vif,
1452 enum nl80211_iftype newtype,
1453 bool newp2p)
1454 {
1455 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1456 wiphy_dbg(hw->wiphy,
1457 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1458 __func__, ieee80211_vif_type_p2p(vif),
1459 newtype, vif->addr);
1460 hwsim_check_magic(vif);
1461
1462 /*
1463 * interface may change from non-AP to AP in
1464 * which case this needs to be set up again
1465 */
1466 vif->cab_queue = 0;
1467
1468 return 0;
1469 }
1470
1471 static void mac80211_hwsim_remove_interface(
1472 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1473 {
1474 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1475 __func__, ieee80211_vif_type_p2p(vif),
1476 vif->addr);
1477 hwsim_check_magic(vif);
1478 hwsim_clear_magic(vif);
1479 }
1480
1481 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1482 struct sk_buff *skb,
1483 struct ieee80211_channel *chan)
1484 {
1485 struct mac80211_hwsim_data *data = hw->priv;
1486 u32 _pid = READ_ONCE(data->wmediumd);
1487
1488 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1489 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1490 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1491 txi->control.rates,
1492 ARRAY_SIZE(txi->control.rates));
1493 }
1494
1495 mac80211_hwsim_monitor_rx(hw, skb, chan);
1496
1497 if (_pid)
1498 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1499
1500 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1501 dev_kfree_skb(skb);
1502 }
1503
1504 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1505 struct ieee80211_vif *vif)
1506 {
1507 struct mac80211_hwsim_data *data = arg;
1508 struct ieee80211_hw *hw = data->hw;
1509 struct ieee80211_tx_info *info;
1510 struct ieee80211_rate *txrate;
1511 struct ieee80211_mgmt *mgmt;
1512 struct sk_buff *skb;
1513
1514 hwsim_check_magic(vif);
1515
1516 if (vif->type != NL80211_IFTYPE_AP &&
1517 vif->type != NL80211_IFTYPE_MESH_POINT &&
1518 vif->type != NL80211_IFTYPE_ADHOC)
1519 return;
1520
1521 skb = ieee80211_beacon_get(hw, vif);
1522 if (skb == NULL)
1523 return;
1524 info = IEEE80211_SKB_CB(skb);
1525 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1526 ieee80211_get_tx_rates(vif, NULL, skb,
1527 info->control.rates,
1528 ARRAY_SIZE(info->control.rates));
1529
1530 txrate = ieee80211_get_tx_rate(hw, info);
1531
1532 mgmt = (struct ieee80211_mgmt *) skb->data;
1533 /* fake header transmission time */
1534 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1535 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1536 data->tsf_offset +
1537 24 * 8 * 10 / txrate->bitrate);
1538
1539 mac80211_hwsim_tx_frame(hw, skb,
1540 rcu_dereference(vif->chanctx_conf)->def.chan);
1541
1542 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1543 ieee80211_csa_finish(vif);
1544 }
1545
1546 static enum hrtimer_restart
1547 mac80211_hwsim_beacon(struct hrtimer *timer)
1548 {
1549 struct mac80211_hwsim_data *data =
1550 container_of(timer, struct mac80211_hwsim_data,
1551 beacon_timer.timer);
1552 struct ieee80211_hw *hw = data->hw;
1553 u64 bcn_int = data->beacon_int;
1554 ktime_t next_bcn;
1555
1556 if (!data->started)
1557 goto out;
1558
1559 ieee80211_iterate_active_interfaces_atomic(
1560 hw, IEEE80211_IFACE_ITER_NORMAL,
1561 mac80211_hwsim_beacon_tx, data);
1562
1563 /* beacon at new TBTT + beacon interval */
1564 if (data->bcn_delta) {
1565 bcn_int -= data->bcn_delta;
1566 data->bcn_delta = 0;
1567 }
1568
1569 next_bcn = ktime_add(hrtimer_get_expires(timer),
1570 ns_to_ktime(bcn_int * 1000));
1571 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1572 out:
1573 return HRTIMER_NORESTART;
1574 }
1575
1576 static const char * const hwsim_chanwidths[] = {
1577 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1578 [NL80211_CHAN_WIDTH_20] = "ht20",
1579 [NL80211_CHAN_WIDTH_40] = "ht40",
1580 [NL80211_CHAN_WIDTH_80] = "vht80",
1581 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1582 [NL80211_CHAN_WIDTH_160] = "vht160",
1583 };
1584
1585 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1586 {
1587 struct mac80211_hwsim_data *data = hw->priv;
1588 struct ieee80211_conf *conf = &hw->conf;
1589 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1590 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1591 [IEEE80211_SMPS_OFF] = "off",
1592 [IEEE80211_SMPS_STATIC] = "static",
1593 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1594 };
1595 int idx;
1596
1597 if (conf->chandef.chan)
1598 wiphy_dbg(hw->wiphy,
1599 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1600 __func__,
1601 conf->chandef.chan->center_freq,
1602 conf->chandef.center_freq1,
1603 conf->chandef.center_freq2,
1604 hwsim_chanwidths[conf->chandef.width],
1605 !!(conf->flags & IEEE80211_CONF_IDLE),
1606 !!(conf->flags & IEEE80211_CONF_PS),
1607 smps_modes[conf->smps_mode]);
1608 else
1609 wiphy_dbg(hw->wiphy,
1610 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1611 __func__,
1612 !!(conf->flags & IEEE80211_CONF_IDLE),
1613 !!(conf->flags & IEEE80211_CONF_PS),
1614 smps_modes[conf->smps_mode]);
1615
1616 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1617
1618 WARN_ON(conf->chandef.chan && data->use_chanctx);
1619
1620 mutex_lock(&data->mutex);
1621 if (data->scanning && conf->chandef.chan) {
1622 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1623 if (data->survey_data[idx].channel == data->channel) {
1624 data->survey_data[idx].start =
1625 data->survey_data[idx].next_start;
1626 data->survey_data[idx].end = jiffies;
1627 break;
1628 }
1629 }
1630
1631 data->channel = conf->chandef.chan;
1632
1633 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1634 if (data->survey_data[idx].channel &&
1635 data->survey_data[idx].channel != data->channel)
1636 continue;
1637 data->survey_data[idx].channel = data->channel;
1638 data->survey_data[idx].next_start = jiffies;
1639 break;
1640 }
1641 } else {
1642 data->channel = conf->chandef.chan;
1643 }
1644 mutex_unlock(&data->mutex);
1645
1646 if (!data->started || !data->beacon_int)
1647 tasklet_hrtimer_cancel(&data->beacon_timer);
1648 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1649 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1650 u32 bcn_int = data->beacon_int;
1651 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1652
1653 tasklet_hrtimer_start(&data->beacon_timer,
1654 ns_to_ktime(until_tbtt * 1000),
1655 HRTIMER_MODE_REL);
1656 }
1657
1658 return 0;
1659 }
1660
1661
1662 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1663 unsigned int changed_flags,
1664 unsigned int *total_flags,u64 multicast)
1665 {
1666 struct mac80211_hwsim_data *data = hw->priv;
1667
1668 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1669
1670 data->rx_filter = 0;
1671 if (*total_flags & FIF_ALLMULTI)
1672 data->rx_filter |= FIF_ALLMULTI;
1673
1674 *total_flags = data->rx_filter;
1675 }
1676
1677 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1678 struct ieee80211_vif *vif)
1679 {
1680 unsigned int *count = data;
1681 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1682
1683 if (vp->bcn_en)
1684 (*count)++;
1685 }
1686
1687 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1688 struct ieee80211_vif *vif,
1689 struct ieee80211_bss_conf *info,
1690 u32 changed)
1691 {
1692 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1693 struct mac80211_hwsim_data *data = hw->priv;
1694
1695 hwsim_check_magic(vif);
1696
1697 wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1698 __func__, changed, vif->addr);
1699
1700 if (changed & BSS_CHANGED_BSSID) {
1701 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1702 __func__, info->bssid);
1703 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1704 }
1705
1706 if (changed & BSS_CHANGED_ASSOC) {
1707 wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1708 info->assoc, info->aid);
1709 vp->assoc = info->assoc;
1710 vp->aid = info->aid;
1711 }
1712
1713 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1714 wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1715 info->enable_beacon, info->beacon_int);
1716 vp->bcn_en = info->enable_beacon;
1717 if (data->started &&
1718 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1719 info->enable_beacon) {
1720 u64 tsf, until_tbtt;
1721 u32 bcn_int;
1722 data->beacon_int = info->beacon_int * 1024;
1723 tsf = mac80211_hwsim_get_tsf(hw, vif);
1724 bcn_int = data->beacon_int;
1725 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1726 tasklet_hrtimer_start(&data->beacon_timer,
1727 ns_to_ktime(until_tbtt * 1000),
1728 HRTIMER_MODE_REL);
1729 } else if (!info->enable_beacon) {
1730 unsigned int count = 0;
1731 ieee80211_iterate_active_interfaces_atomic(
1732 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1733 mac80211_hwsim_bcn_en_iter, &count);
1734 wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
1735 count);
1736 if (count == 0) {
1737 tasklet_hrtimer_cancel(&data->beacon_timer);
1738 data->beacon_int = 0;
1739 }
1740 }
1741 }
1742
1743 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1744 wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
1745 info->use_cts_prot);
1746 }
1747
1748 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1749 wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
1750 info->use_short_preamble);
1751 }
1752
1753 if (changed & BSS_CHANGED_ERP_SLOT) {
1754 wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1755 }
1756
1757 if (changed & BSS_CHANGED_HT) {
1758 wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
1759 info->ht_operation_mode);
1760 }
1761
1762 if (changed & BSS_CHANGED_BASIC_RATES) {
1763 wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1764 (unsigned long long) info->basic_rates);
1765 }
1766
1767 if (changed & BSS_CHANGED_TXPOWER)
1768 wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1769 }
1770
1771 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1772 struct ieee80211_vif *vif,
1773 struct ieee80211_sta *sta)
1774 {
1775 hwsim_check_magic(vif);
1776 hwsim_set_sta_magic(sta);
1777
1778 return 0;
1779 }
1780
1781 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1782 struct ieee80211_vif *vif,
1783 struct ieee80211_sta *sta)
1784 {
1785 hwsim_check_magic(vif);
1786 hwsim_clear_sta_magic(sta);
1787
1788 return 0;
1789 }
1790
1791 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1792 struct ieee80211_vif *vif,
1793 enum sta_notify_cmd cmd,
1794 struct ieee80211_sta *sta)
1795 {
1796 hwsim_check_magic(vif);
1797
1798 switch (cmd) {
1799 case STA_NOTIFY_SLEEP:
1800 case STA_NOTIFY_AWAKE:
1801 /* TODO: make good use of these flags */
1802 break;
1803 default:
1804 WARN(1, "Invalid sta notify: %d\n", cmd);
1805 break;
1806 }
1807 }
1808
1809 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1810 struct ieee80211_sta *sta,
1811 bool set)
1812 {
1813 hwsim_check_sta_magic(sta);
1814 return 0;
1815 }
1816
1817 static int mac80211_hwsim_conf_tx(
1818 struct ieee80211_hw *hw,
1819 struct ieee80211_vif *vif, u16 queue,
1820 const struct ieee80211_tx_queue_params *params)
1821 {
1822 wiphy_dbg(hw->wiphy,
1823 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1824 __func__, queue,
1825 params->txop, params->cw_min,
1826 params->cw_max, params->aifs);
1827 return 0;
1828 }
1829
1830 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1831 struct survey_info *survey)
1832 {
1833 struct mac80211_hwsim_data *hwsim = hw->priv;
1834
1835 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1836 return -ENOENT;
1837
1838 mutex_lock(&hwsim->mutex);
1839 survey->channel = hwsim->survey_data[idx].channel;
1840 if (!survey->channel) {
1841 mutex_unlock(&hwsim->mutex);
1842 return -ENOENT;
1843 }
1844
1845 /*
1846 * Magically conjured dummy values --- this is only ok for simulated hardware.
1847 *
1848 * A real driver which cannot determine real values noise MUST NOT
1849 * report any, especially not a magically conjured ones :-)
1850 */
1851 survey->filled = SURVEY_INFO_NOISE_DBM |
1852 SURVEY_INFO_TIME |
1853 SURVEY_INFO_TIME_BUSY;
1854 survey->noise = -92;
1855 survey->time =
1856 jiffies_to_msecs(hwsim->survey_data[idx].end -
1857 hwsim->survey_data[idx].start);
1858 /* report 12.5% of channel time is used */
1859 survey->time_busy = survey->time/8;
1860 mutex_unlock(&hwsim->mutex);
1861
1862 return 0;
1863 }
1864
1865 #ifdef CONFIG_NL80211_TESTMODE
1866 /*
1867 * This section contains example code for using netlink
1868 * attributes with the testmode command in nl80211.
1869 */
1870
1871 /* These enums need to be kept in sync with userspace */
1872 enum hwsim_testmode_attr {
1873 __HWSIM_TM_ATTR_INVALID = 0,
1874 HWSIM_TM_ATTR_CMD = 1,
1875 HWSIM_TM_ATTR_PS = 2,
1876
1877 /* keep last */
1878 __HWSIM_TM_ATTR_AFTER_LAST,
1879 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1880 };
1881
1882 enum hwsim_testmode_cmd {
1883 HWSIM_TM_CMD_SET_PS = 0,
1884 HWSIM_TM_CMD_GET_PS = 1,
1885 HWSIM_TM_CMD_STOP_QUEUES = 2,
1886 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1887 };
1888
1889 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1890 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1891 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1892 };
1893
1894 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1895 struct ieee80211_vif *vif,
1896 void *data, int len)
1897 {
1898 struct mac80211_hwsim_data *hwsim = hw->priv;
1899 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1900 struct sk_buff *skb;
1901 int err, ps;
1902
1903 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1904 hwsim_testmode_policy, NULL);
1905 if (err)
1906 return err;
1907
1908 if (!tb[HWSIM_TM_ATTR_CMD])
1909 return -EINVAL;
1910
1911 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1912 case HWSIM_TM_CMD_SET_PS:
1913 if (!tb[HWSIM_TM_ATTR_PS])
1914 return -EINVAL;
1915 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1916 return hwsim_fops_ps_write(hwsim, ps);
1917 case HWSIM_TM_CMD_GET_PS:
1918 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1919 nla_total_size(sizeof(u32)));
1920 if (!skb)
1921 return -ENOMEM;
1922 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1923 goto nla_put_failure;
1924 return cfg80211_testmode_reply(skb);
1925 case HWSIM_TM_CMD_STOP_QUEUES:
1926 ieee80211_stop_queues(hw);
1927 return 0;
1928 case HWSIM_TM_CMD_WAKE_QUEUES:
1929 ieee80211_wake_queues(hw);
1930 return 0;
1931 default:
1932 return -EOPNOTSUPP;
1933 }
1934
1935 nla_put_failure:
1936 kfree_skb(skb);
1937 return -ENOBUFS;
1938 }
1939 #endif
1940
1941 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1942 struct ieee80211_vif *vif,
1943 struct ieee80211_ampdu_params *params)
1944 {
1945 struct ieee80211_sta *sta = params->sta;
1946 enum ieee80211_ampdu_mlme_action action = params->action;
1947 u16 tid = params->tid;
1948
1949 switch (action) {
1950 case IEEE80211_AMPDU_TX_START:
1951 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1952 break;
1953 case IEEE80211_AMPDU_TX_STOP_CONT:
1954 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1955 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1956 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1957 break;
1958 case IEEE80211_AMPDU_TX_OPERATIONAL:
1959 break;
1960 case IEEE80211_AMPDU_RX_START:
1961 case IEEE80211_AMPDU_RX_STOP:
1962 break;
1963 default:
1964 return -EOPNOTSUPP;
1965 }
1966
1967 return 0;
1968 }
1969
1970 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1971 struct ieee80211_vif *vif,
1972 u32 queues, bool drop)
1973 {
1974 /* Not implemented, queues only on kernel side */
1975 }
1976
1977 static void hw_scan_work(struct work_struct *work)
1978 {
1979 struct mac80211_hwsim_data *hwsim =
1980 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1981 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1982 int dwell, i;
1983
1984 mutex_lock(&hwsim->mutex);
1985 if (hwsim->scan_chan_idx >= req->n_channels) {
1986 struct cfg80211_scan_info info = {
1987 .aborted = false,
1988 };
1989
1990 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
1991 ieee80211_scan_completed(hwsim->hw, &info);
1992 hwsim->hw_scan_request = NULL;
1993 hwsim->hw_scan_vif = NULL;
1994 hwsim->tmp_chan = NULL;
1995 mutex_unlock(&hwsim->mutex);
1996 return;
1997 }
1998
1999 wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2000 req->channels[hwsim->scan_chan_idx]->center_freq);
2001
2002 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2003 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2004 IEEE80211_CHAN_RADAR) ||
2005 !req->n_ssids) {
2006 dwell = 120;
2007 } else {
2008 dwell = 30;
2009 /* send probes */
2010 for (i = 0; i < req->n_ssids; i++) {
2011 struct sk_buff *probe;
2012 struct ieee80211_mgmt *mgmt;
2013
2014 probe = ieee80211_probereq_get(hwsim->hw,
2015 hwsim->scan_addr,
2016 req->ssids[i].ssid,
2017 req->ssids[i].ssid_len,
2018 req->ie_len);
2019 if (!probe)
2020 continue;
2021
2022 mgmt = (struct ieee80211_mgmt *) probe->data;
2023 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2024 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2025
2026 if (req->ie_len)
2027 skb_put_data(probe, req->ie, req->ie_len);
2028
2029 local_bh_disable();
2030 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2031 hwsim->tmp_chan);
2032 local_bh_enable();
2033 }
2034 }
2035 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2036 msecs_to_jiffies(dwell));
2037 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2038 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2039 hwsim->survey_data[hwsim->scan_chan_idx].end =
2040 jiffies + msecs_to_jiffies(dwell);
2041 hwsim->scan_chan_idx++;
2042 mutex_unlock(&hwsim->mutex);
2043 }
2044
2045 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2046 struct ieee80211_vif *vif,
2047 struct ieee80211_scan_request *hw_req)
2048 {
2049 struct mac80211_hwsim_data *hwsim = hw->priv;
2050 struct cfg80211_scan_request *req = &hw_req->req;
2051
2052 mutex_lock(&hwsim->mutex);
2053 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2054 mutex_unlock(&hwsim->mutex);
2055 return -EBUSY;
2056 }
2057 hwsim->hw_scan_request = req;
2058 hwsim->hw_scan_vif = vif;
2059 hwsim->scan_chan_idx = 0;
2060 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2061 get_random_mask_addr(hwsim->scan_addr,
2062 hw_req->req.mac_addr,
2063 hw_req->req.mac_addr_mask);
2064 else
2065 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2066 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2067 mutex_unlock(&hwsim->mutex);
2068
2069 wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2070
2071 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2072
2073 return 0;
2074 }
2075
2076 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2077 struct ieee80211_vif *vif)
2078 {
2079 struct mac80211_hwsim_data *hwsim = hw->priv;
2080 struct cfg80211_scan_info info = {
2081 .aborted = true,
2082 };
2083
2084 wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2085
2086 cancel_delayed_work_sync(&hwsim->hw_scan);
2087
2088 mutex_lock(&hwsim->mutex);
2089 ieee80211_scan_completed(hwsim->hw, &info);
2090 hwsim->tmp_chan = NULL;
2091 hwsim->hw_scan_request = NULL;
2092 hwsim->hw_scan_vif = NULL;
2093 mutex_unlock(&hwsim->mutex);
2094 }
2095
2096 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2097 struct ieee80211_vif *vif,
2098 const u8 *mac_addr)
2099 {
2100 struct mac80211_hwsim_data *hwsim = hw->priv;
2101
2102 mutex_lock(&hwsim->mutex);
2103
2104 if (hwsim->scanning) {
2105 pr_debug("two hwsim sw_scans detected!\n");
2106 goto out;
2107 }
2108
2109 pr_debug("hwsim sw_scan request, prepping stuff\n");
2110
2111 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2112 hwsim->scanning = true;
2113 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2114
2115 out:
2116 mutex_unlock(&hwsim->mutex);
2117 }
2118
2119 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2120 struct ieee80211_vif *vif)
2121 {
2122 struct mac80211_hwsim_data *hwsim = hw->priv;
2123
2124 mutex_lock(&hwsim->mutex);
2125
2126 pr_debug("hwsim sw_scan_complete\n");
2127 hwsim->scanning = false;
2128 eth_zero_addr(hwsim->scan_addr);
2129
2130 mutex_unlock(&hwsim->mutex);
2131 }
2132
2133 static void hw_roc_start(struct work_struct *work)
2134 {
2135 struct mac80211_hwsim_data *hwsim =
2136 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2137
2138 mutex_lock(&hwsim->mutex);
2139
2140 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2141 hwsim->tmp_chan = hwsim->roc_chan;
2142 ieee80211_ready_on_channel(hwsim->hw);
2143
2144 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2145 msecs_to_jiffies(hwsim->roc_duration));
2146
2147 mutex_unlock(&hwsim->mutex);
2148 }
2149
2150 static void hw_roc_done(struct work_struct *work)
2151 {
2152 struct mac80211_hwsim_data *hwsim =
2153 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2154
2155 mutex_lock(&hwsim->mutex);
2156 ieee80211_remain_on_channel_expired(hwsim->hw);
2157 hwsim->tmp_chan = NULL;
2158 mutex_unlock(&hwsim->mutex);
2159
2160 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2161 }
2162
2163 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2164 struct ieee80211_vif *vif,
2165 struct ieee80211_channel *chan,
2166 int duration,
2167 enum ieee80211_roc_type type)
2168 {
2169 struct mac80211_hwsim_data *hwsim = hw->priv;
2170
2171 mutex_lock(&hwsim->mutex);
2172 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2173 mutex_unlock(&hwsim->mutex);
2174 return -EBUSY;
2175 }
2176
2177 hwsim->roc_chan = chan;
2178 hwsim->roc_duration = duration;
2179 mutex_unlock(&hwsim->mutex);
2180
2181 wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2182 chan->center_freq, duration);
2183 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2184
2185 return 0;
2186 }
2187
2188 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2189 {
2190 struct mac80211_hwsim_data *hwsim = hw->priv;
2191
2192 cancel_delayed_work_sync(&hwsim->roc_start);
2193 cancel_delayed_work_sync(&hwsim->roc_done);
2194
2195 mutex_lock(&hwsim->mutex);
2196 hwsim->tmp_chan = NULL;
2197 mutex_unlock(&hwsim->mutex);
2198
2199 wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2200
2201 return 0;
2202 }
2203
2204 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2205 struct ieee80211_chanctx_conf *ctx)
2206 {
2207 hwsim_set_chanctx_magic(ctx);
2208 wiphy_dbg(hw->wiphy,
2209 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2210 ctx->def.chan->center_freq, ctx->def.width,
2211 ctx->def.center_freq1, ctx->def.center_freq2);
2212 return 0;
2213 }
2214
2215 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2216 struct ieee80211_chanctx_conf *ctx)
2217 {
2218 wiphy_dbg(hw->wiphy,
2219 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2220 ctx->def.chan->center_freq, ctx->def.width,
2221 ctx->def.center_freq1, ctx->def.center_freq2);
2222 hwsim_check_chanctx_magic(ctx);
2223 hwsim_clear_chanctx_magic(ctx);
2224 }
2225
2226 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2227 struct ieee80211_chanctx_conf *ctx,
2228 u32 changed)
2229 {
2230 hwsim_check_chanctx_magic(ctx);
2231 wiphy_dbg(hw->wiphy,
2232 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2233 ctx->def.chan->center_freq, ctx->def.width,
2234 ctx->def.center_freq1, ctx->def.center_freq2);
2235 }
2236
2237 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2238 struct ieee80211_vif *vif,
2239 struct ieee80211_chanctx_conf *ctx)
2240 {
2241 hwsim_check_magic(vif);
2242 hwsim_check_chanctx_magic(ctx);
2243
2244 return 0;
2245 }
2246
2247 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2248 struct ieee80211_vif *vif,
2249 struct ieee80211_chanctx_conf *ctx)
2250 {
2251 hwsim_check_magic(vif);
2252 hwsim_check_chanctx_magic(ctx);
2253 }
2254
2255 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2256 "tx_pkts_nic",
2257 "tx_bytes_nic",
2258 "rx_pkts_nic",
2259 "rx_bytes_nic",
2260 "d_tx_dropped",
2261 "d_tx_failed",
2262 "d_ps_mode",
2263 "d_group",
2264 };
2265
2266 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2267
2268 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2269 struct ieee80211_vif *vif,
2270 u32 sset, u8 *data)
2271 {
2272 if (sset == ETH_SS_STATS)
2273 memcpy(data, *mac80211_hwsim_gstrings_stats,
2274 sizeof(mac80211_hwsim_gstrings_stats));
2275 }
2276
2277 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2278 struct ieee80211_vif *vif, int sset)
2279 {
2280 if (sset == ETH_SS_STATS)
2281 return MAC80211_HWSIM_SSTATS_LEN;
2282 return 0;
2283 }
2284
2285 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2286 struct ieee80211_vif *vif,
2287 struct ethtool_stats *stats, u64 *data)
2288 {
2289 struct mac80211_hwsim_data *ar = hw->priv;
2290 int i = 0;
2291
2292 data[i++] = ar->tx_pkts;
2293 data[i++] = ar->tx_bytes;
2294 data[i++] = ar->rx_pkts;
2295 data[i++] = ar->rx_bytes;
2296 data[i++] = ar->tx_dropped;
2297 data[i++] = ar->tx_failed;
2298 data[i++] = ar->ps;
2299 data[i++] = ar->group;
2300
2301 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2302 }
2303
2304 #define HWSIM_COMMON_OPS \
2305 .tx = mac80211_hwsim_tx, \
2306 .start = mac80211_hwsim_start, \
2307 .stop = mac80211_hwsim_stop, \
2308 .add_interface = mac80211_hwsim_add_interface, \
2309 .change_interface = mac80211_hwsim_change_interface, \
2310 .remove_interface = mac80211_hwsim_remove_interface, \
2311 .config = mac80211_hwsim_config, \
2312 .configure_filter = mac80211_hwsim_configure_filter, \
2313 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2314 .sta_add = mac80211_hwsim_sta_add, \
2315 .sta_remove = mac80211_hwsim_sta_remove, \
2316 .sta_notify = mac80211_hwsim_sta_notify, \
2317 .set_tim = mac80211_hwsim_set_tim, \
2318 .conf_tx = mac80211_hwsim_conf_tx, \
2319 .get_survey = mac80211_hwsim_get_survey, \
2320 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2321 .ampdu_action = mac80211_hwsim_ampdu_action, \
2322 .flush = mac80211_hwsim_flush, \
2323 .get_tsf = mac80211_hwsim_get_tsf, \
2324 .set_tsf = mac80211_hwsim_set_tsf, \
2325 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2326 .get_et_stats = mac80211_hwsim_get_et_stats, \
2327 .get_et_strings = mac80211_hwsim_get_et_strings,
2328
2329 static const struct ieee80211_ops mac80211_hwsim_ops = {
2330 HWSIM_COMMON_OPS
2331 .sw_scan_start = mac80211_hwsim_sw_scan,
2332 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2333 };
2334
2335 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2336 HWSIM_COMMON_OPS
2337 .hw_scan = mac80211_hwsim_hw_scan,
2338 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2339 .sw_scan_start = NULL,
2340 .sw_scan_complete = NULL,
2341 .remain_on_channel = mac80211_hwsim_roc,
2342 .cancel_remain_on_channel = mac80211_hwsim_croc,
2343 .add_chanctx = mac80211_hwsim_add_chanctx,
2344 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2345 .change_chanctx = mac80211_hwsim_change_chanctx,
2346 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2347 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2348 };
2349
2350 struct hwsim_new_radio_params {
2351 unsigned int channels;
2352 const char *reg_alpha2;
2353 const struct ieee80211_regdomain *regd;
2354 bool reg_strict;
2355 bool p2p_device;
2356 bool use_chanctx;
2357 bool destroy_on_close;
2358 const char *hwname;
2359 bool no_vif;
2360 };
2361
2362 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2363 struct genl_info *info)
2364 {
2365 if (info)
2366 genl_notify(&hwsim_genl_family, mcast_skb, info,
2367 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2368 else
2369 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2370 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2371 }
2372
2373 static int append_radio_msg(struct sk_buff *skb, int id,
2374 struct hwsim_new_radio_params *param)
2375 {
2376 int ret;
2377
2378 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2379 if (ret < 0)
2380 return ret;
2381
2382 if (param->channels) {
2383 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2384 if (ret < 0)
2385 return ret;
2386 }
2387
2388 if (param->reg_alpha2) {
2389 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2390 param->reg_alpha2);
2391 if (ret < 0)
2392 return ret;
2393 }
2394
2395 if (param->regd) {
2396 int i;
2397
2398 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2399 if (hwsim_world_regdom_custom[i] != param->regd)
2400 continue;
2401
2402 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2403 if (ret < 0)
2404 return ret;
2405 break;
2406 }
2407 }
2408
2409 if (param->reg_strict) {
2410 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2411 if (ret < 0)
2412 return ret;
2413 }
2414
2415 if (param->p2p_device) {
2416 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2417 if (ret < 0)
2418 return ret;
2419 }
2420
2421 if (param->use_chanctx) {
2422 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2423 if (ret < 0)
2424 return ret;
2425 }
2426
2427 if (param->hwname) {
2428 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2429 strlen(param->hwname), param->hwname);
2430 if (ret < 0)
2431 return ret;
2432 }
2433
2434 return 0;
2435 }
2436
2437 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2438 struct hwsim_new_radio_params *param)
2439 {
2440 struct sk_buff *mcast_skb;
2441 void *data;
2442
2443 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2444 if (!mcast_skb)
2445 return;
2446
2447 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2448 HWSIM_CMD_NEW_RADIO);
2449 if (!data)
2450 goto out_err;
2451
2452 if (append_radio_msg(mcast_skb, id, param) < 0)
2453 goto out_err;
2454
2455 genlmsg_end(mcast_skb, data);
2456
2457 hwsim_mcast_config_msg(mcast_skb, info);
2458 return;
2459
2460 out_err:
2461 genlmsg_cancel(mcast_skb, data);
2462 nlmsg_free(mcast_skb);
2463 }
2464
2465 static int mac80211_hwsim_new_radio(struct genl_info *info,
2466 struct hwsim_new_radio_params *param)
2467 {
2468 int err;
2469 u8 addr[ETH_ALEN];
2470 struct mac80211_hwsim_data *data;
2471 struct ieee80211_hw *hw;
2472 enum nl80211_band band;
2473 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2474 struct net *net;
2475 int idx;
2476
2477 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2478 return -EINVAL;
2479
2480 spin_lock_bh(&hwsim_radio_lock);
2481 idx = hwsim_radio_idx++;
2482 spin_unlock_bh(&hwsim_radio_lock);
2483
2484 if (param->use_chanctx)
2485 ops = &mac80211_hwsim_mchan_ops;
2486 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2487 if (!hw) {
2488 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2489 err = -ENOMEM;
2490 goto failed;
2491 }
2492
2493 /* ieee80211_alloc_hw_nm may have used a default name */
2494 param->hwname = wiphy_name(hw->wiphy);
2495
2496 if (info)
2497 net = genl_info_net(info);
2498 else
2499 net = &init_net;
2500 wiphy_net_set(hw->wiphy, net);
2501
2502 data = hw->priv;
2503 data->hw = hw;
2504
2505 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2506 if (IS_ERR(data->dev)) {
2507 printk(KERN_DEBUG
2508 "mac80211_hwsim: device_create failed (%ld)\n",
2509 PTR_ERR(data->dev));
2510 err = -ENOMEM;
2511 goto failed_drvdata;
2512 }
2513 data->dev->driver = &mac80211_hwsim_driver.driver;
2514 err = device_bind_driver(data->dev);
2515 if (err != 0) {
2516 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2517 err);
2518 goto failed_bind;
2519 }
2520
2521 skb_queue_head_init(&data->pending);
2522
2523 SET_IEEE80211_DEV(hw, data->dev);
2524 eth_zero_addr(addr);
2525 addr[0] = 0x02;
2526 addr[3] = idx >> 8;
2527 addr[4] = idx;
2528 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2529 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2530 data->addresses[1].addr[0] |= 0x40;
2531 hw->wiphy->n_addresses = 2;
2532 hw->wiphy->addresses = data->addresses;
2533
2534 data->channels = param->channels;
2535 data->use_chanctx = param->use_chanctx;
2536 data->idx = idx;
2537 data->destroy_on_close = param->destroy_on_close;
2538 if (info)
2539 data->portid = info->snd_portid;
2540
2541 if (data->use_chanctx) {
2542 hw->wiphy->max_scan_ssids = 255;
2543 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2544 hw->wiphy->max_remain_on_channel_duration = 1000;
2545 hw->wiphy->iface_combinations = &data->if_combination;
2546 if (param->p2p_device)
2547 data->if_combination = hwsim_if_comb_p2p_dev[0];
2548 else
2549 data->if_combination = hwsim_if_comb[0];
2550 hw->wiphy->n_iface_combinations = 1;
2551 /* For channels > 1 DFS is not allowed */
2552 data->if_combination.radar_detect_widths = 0;
2553 data->if_combination.num_different_channels = data->channels;
2554 } else if (param->p2p_device) {
2555 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2556 hw->wiphy->n_iface_combinations =
2557 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2558 } else {
2559 hw->wiphy->iface_combinations = hwsim_if_comb;
2560 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2561 }
2562
2563 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2564 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2565 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2566
2567 hw->queues = 5;
2568 hw->offchannel_tx_hw_queue = 4;
2569 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2570 BIT(NL80211_IFTYPE_AP) |
2571 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2572 BIT(NL80211_IFTYPE_P2P_GO) |
2573 BIT(NL80211_IFTYPE_ADHOC) |
2574 BIT(NL80211_IFTYPE_MESH_POINT);
2575
2576 if (param->p2p_device)
2577 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2578
2579 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2580 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2581 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2582 ieee80211_hw_set(hw, QUEUE_CONTROL);
2583 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2584 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2585 ieee80211_hw_set(hw, MFP_CAPABLE);
2586 ieee80211_hw_set(hw, SIGNAL_DBM);
2587 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2588 if (rctbl)
2589 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2590
2591 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2592 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2593 WIPHY_FLAG_AP_UAPSD |
2594 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2595 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2596 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2597 NL80211_FEATURE_STATIC_SMPS |
2598 NL80211_FEATURE_DYNAMIC_SMPS |
2599 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2600 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2601
2602 /* ask mac80211 to reserve space for magic */
2603 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2604 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2605 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2606
2607 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2608 sizeof(hwsim_channels_2ghz));
2609 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2610 sizeof(hwsim_channels_5ghz));
2611 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2612
2613 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2614 struct ieee80211_supported_band *sband = &data->bands[band];
2615 switch (band) {
2616 case NL80211_BAND_2GHZ:
2617 sband->channels = data->channels_2ghz;
2618 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2619 sband->bitrates = data->rates;
2620 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2621 break;
2622 case NL80211_BAND_5GHZ:
2623 sband->channels = data->channels_5ghz;
2624 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2625 sband->bitrates = data->rates + 4;
2626 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2627
2628 sband->vht_cap.vht_supported = true;
2629 sband->vht_cap.cap =
2630 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2631 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2632 IEEE80211_VHT_CAP_RXLDPC |
2633 IEEE80211_VHT_CAP_SHORT_GI_80 |
2634 IEEE80211_VHT_CAP_SHORT_GI_160 |
2635 IEEE80211_VHT_CAP_TXSTBC |
2636 IEEE80211_VHT_CAP_RXSTBC_1 |
2637 IEEE80211_VHT_CAP_RXSTBC_2 |
2638 IEEE80211_VHT_CAP_RXSTBC_3 |
2639 IEEE80211_VHT_CAP_RXSTBC_4 |
2640 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2641 sband->vht_cap.vht_mcs.rx_mcs_map =
2642 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2643 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2644 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2645 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2646 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2647 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2648 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2649 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2650 sband->vht_cap.vht_mcs.tx_mcs_map =
2651 sband->vht_cap.vht_mcs.rx_mcs_map;
2652 break;
2653 default:
2654 continue;
2655 }
2656
2657 sband->ht_cap.ht_supported = true;
2658 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2659 IEEE80211_HT_CAP_GRN_FLD |
2660 IEEE80211_HT_CAP_SGI_20 |
2661 IEEE80211_HT_CAP_SGI_40 |
2662 IEEE80211_HT_CAP_DSSSCCK40;
2663 sband->ht_cap.ampdu_factor = 0x3;
2664 sband->ht_cap.ampdu_density = 0x6;
2665 memset(&sband->ht_cap.mcs, 0,
2666 sizeof(sband->ht_cap.mcs));
2667 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2668 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2669 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2670
2671 hw->wiphy->bands[band] = sband;
2672 }
2673
2674 /* By default all radios belong to the first group */
2675 data->group = 1;
2676 mutex_init(&data->mutex);
2677
2678 data->netgroup = hwsim_net_get_netgroup(net);
2679
2680 /* Enable frame retransmissions for lossy channels */
2681 hw->max_rates = 4;
2682 hw->max_rate_tries = 11;
2683
2684 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2685 hw->wiphy->n_vendor_commands =
2686 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2687 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2688 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2689
2690 if (param->reg_strict)
2691 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2692 if (param->regd) {
2693 data->regd = param->regd;
2694 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2695 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2696 /* give the regulatory workqueue a chance to run */
2697 schedule_timeout_interruptible(1);
2698 }
2699
2700 if (param->no_vif)
2701 ieee80211_hw_set(hw, NO_AUTO_VIF);
2702
2703 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2704
2705 err = ieee80211_register_hw(hw);
2706 if (err < 0) {
2707 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2708 err);
2709 goto failed_hw;
2710 }
2711
2712 wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2713
2714 if (param->reg_alpha2) {
2715 data->alpha2[0] = param->reg_alpha2[0];
2716 data->alpha2[1] = param->reg_alpha2[1];
2717 regulatory_hint(hw->wiphy, param->reg_alpha2);
2718 }
2719
2720 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2721 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2722 debugfs_create_file("group", 0666, data->debugfs, data,
2723 &hwsim_fops_group);
2724 if (!data->use_chanctx)
2725 debugfs_create_file("dfs_simulate_radar", 0222,
2726 data->debugfs,
2727 data, &hwsim_simulate_radar);
2728
2729 tasklet_hrtimer_init(&data->beacon_timer,
2730 mac80211_hwsim_beacon,
2731 CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2732
2733 spin_lock_bh(&hwsim_radio_lock);
2734 list_add_tail(&data->list, &hwsim_radios);
2735 spin_unlock_bh(&hwsim_radio_lock);
2736
2737 if (idx > 0)
2738 hwsim_mcast_new_radio(idx, info, param);
2739
2740 return idx;
2741
2742 failed_hw:
2743 device_release_driver(data->dev);
2744 failed_bind:
2745 device_unregister(data->dev);
2746 failed_drvdata:
2747 ieee80211_free_hw(hw);
2748 failed:
2749 return err;
2750 }
2751
2752 static void hwsim_mcast_del_radio(int id, const char *hwname,
2753 struct genl_info *info)
2754 {
2755 struct sk_buff *skb;
2756 void *data;
2757 int ret;
2758
2759 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2760 if (!skb)
2761 return;
2762
2763 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2764 HWSIM_CMD_DEL_RADIO);
2765 if (!data)
2766 goto error;
2767
2768 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2769 if (ret < 0)
2770 goto error;
2771
2772 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2773 hwname);
2774 if (ret < 0)
2775 goto error;
2776
2777 genlmsg_end(skb, data);
2778
2779 hwsim_mcast_config_msg(skb, info);
2780
2781 return;
2782
2783 error:
2784 nlmsg_free(skb);
2785 }
2786
2787 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2788 const char *hwname,
2789 struct genl_info *info)
2790 {
2791 hwsim_mcast_del_radio(data->idx, hwname, info);
2792 debugfs_remove_recursive(data->debugfs);
2793 ieee80211_unregister_hw(data->hw);
2794 device_release_driver(data->dev);
2795 device_unregister(data->dev);
2796 ieee80211_free_hw(data->hw);
2797 }
2798
2799 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2800 struct mac80211_hwsim_data *data,
2801 u32 portid, u32 seq,
2802 struct netlink_callback *cb, int flags)
2803 {
2804 void *hdr;
2805 struct hwsim_new_radio_params param = { };
2806 int res = -EMSGSIZE;
2807
2808 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2809 HWSIM_CMD_GET_RADIO);
2810 if (!hdr)
2811 return -EMSGSIZE;
2812
2813 if (cb)
2814 genl_dump_check_consistent(cb, hdr);
2815
2816 if (data->alpha2[0] && data->alpha2[1])
2817 param.reg_alpha2 = data->alpha2;
2818
2819 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2820 REGULATORY_STRICT_REG);
2821 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2822 BIT(NL80211_IFTYPE_P2P_DEVICE));
2823 param.use_chanctx = data->use_chanctx;
2824 param.regd = data->regd;
2825 param.channels = data->channels;
2826 param.hwname = wiphy_name(data->hw->wiphy);
2827
2828 res = append_radio_msg(skb, data->idx, &param);
2829 if (res < 0)
2830 goto out_err;
2831
2832 genlmsg_end(skb, hdr);
2833 return 0;
2834
2835 out_err:
2836 genlmsg_cancel(skb, hdr);
2837 return res;
2838 }
2839
2840 static void mac80211_hwsim_free(void)
2841 {
2842 struct mac80211_hwsim_data *data;
2843
2844 spin_lock_bh(&hwsim_radio_lock);
2845 while ((data = list_first_entry_or_null(&hwsim_radios,
2846 struct mac80211_hwsim_data,
2847 list))) {
2848 list_del(&data->list);
2849 spin_unlock_bh(&hwsim_radio_lock);
2850 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2851 NULL);
2852 spin_lock_bh(&hwsim_radio_lock);
2853 }
2854 spin_unlock_bh(&hwsim_radio_lock);
2855 class_destroy(hwsim_class);
2856 }
2857
2858 static const struct net_device_ops hwsim_netdev_ops = {
2859 .ndo_start_xmit = hwsim_mon_xmit,
2860 .ndo_set_mac_address = eth_mac_addr,
2861 .ndo_validate_addr = eth_validate_addr,
2862 };
2863
2864 static void hwsim_mon_setup(struct net_device *dev)
2865 {
2866 dev->netdev_ops = &hwsim_netdev_ops;
2867 dev->needs_free_netdev = true;
2868 ether_setup(dev);
2869 dev->priv_flags |= IFF_NO_QUEUE;
2870 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2871 eth_zero_addr(dev->dev_addr);
2872 dev->dev_addr[0] = 0x12;
2873 }
2874
2875 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2876 {
2877 struct mac80211_hwsim_data *data;
2878 bool _found = false;
2879
2880 spin_lock_bh(&hwsim_radio_lock);
2881 list_for_each_entry(data, &hwsim_radios, list) {
2882 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2883 _found = true;
2884 break;
2885 }
2886 }
2887 spin_unlock_bh(&hwsim_radio_lock);
2888
2889 if (!_found)
2890 return NULL;
2891
2892 return data;
2893 }
2894
2895 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2896 {
2897 struct mac80211_hwsim_data *data;
2898
2899 hwsim_net_set_wmediumd(net, portid);
2900
2901 spin_lock_bh(&hwsim_radio_lock);
2902 list_for_each_entry(data, &hwsim_radios, list) {
2903 if (data->netgroup == hwsim_net_get_netgroup(net))
2904 data->wmediumd = portid;
2905 }
2906 spin_unlock_bh(&hwsim_radio_lock);
2907 }
2908
2909 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2910 struct genl_info *info)
2911 {
2912
2913 struct ieee80211_hdr *hdr;
2914 struct mac80211_hwsim_data *data2;
2915 struct ieee80211_tx_info *txi;
2916 struct hwsim_tx_rate *tx_attempts;
2917 u64 ret_skb_cookie;
2918 struct sk_buff *skb, *tmp;
2919 const u8 *src;
2920 unsigned int hwsim_flags;
2921 int i;
2922 bool found = false;
2923
2924 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2925 !info->attrs[HWSIM_ATTR_FLAGS] ||
2926 !info->attrs[HWSIM_ATTR_COOKIE] ||
2927 !info->attrs[HWSIM_ATTR_SIGNAL] ||
2928 !info->attrs[HWSIM_ATTR_TX_INFO])
2929 goto out;
2930
2931 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2932 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2933 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2934
2935 data2 = get_hwsim_data_ref_from_addr(src);
2936 if (!data2)
2937 goto out;
2938
2939 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2940 goto out;
2941
2942 if (info->snd_portid != data2->wmediumd)
2943 goto out;
2944
2945 /* look for the skb matching the cookie passed back from user */
2946 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2947 u64 skb_cookie;
2948
2949 txi = IEEE80211_SKB_CB(skb);
2950 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2951
2952 if (skb_cookie == ret_skb_cookie) {
2953 skb_unlink(skb, &data2->pending);
2954 found = true;
2955 break;
2956 }
2957 }
2958
2959 /* not found */
2960 if (!found)
2961 goto out;
2962
2963 /* Tx info received because the frame was broadcasted on user space,
2964 so we get all the necessary info: tx attempts and skb control buff */
2965
2966 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2967 info->attrs[HWSIM_ATTR_TX_INFO]);
2968
2969 /* now send back TX status */
2970 txi = IEEE80211_SKB_CB(skb);
2971
2972 ieee80211_tx_info_clear_status(txi);
2973
2974 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2975 txi->status.rates[i].idx = tx_attempts[i].idx;
2976 txi->status.rates[i].count = tx_attempts[i].count;
2977 /*txi->status.rates[i].flags = 0;*/
2978 }
2979
2980 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2981
2982 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2983 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2984 if (skb->len >= 16) {
2985 hdr = (struct ieee80211_hdr *) skb->data;
2986 mac80211_hwsim_monitor_ack(data2->channel,
2987 hdr->addr2);
2988 }
2989 txi->flags |= IEEE80211_TX_STAT_ACK;
2990 }
2991 ieee80211_tx_status_irqsafe(data2->hw, skb);
2992 return 0;
2993 out:
2994 return -EINVAL;
2995
2996 }
2997
2998 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2999 struct genl_info *info)
3000 {
3001 struct mac80211_hwsim_data *data2;
3002 struct ieee80211_rx_status rx_status;
3003 const u8 *dst;
3004 int frame_data_len;
3005 void *frame_data;
3006 struct sk_buff *skb = NULL;
3007
3008 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3009 !info->attrs[HWSIM_ATTR_FRAME] ||
3010 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3011 !info->attrs[HWSIM_ATTR_SIGNAL])
3012 goto out;
3013
3014 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3015 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3016 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3017
3018 /* Allocate new skb here */
3019 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3020 if (skb == NULL)
3021 goto err;
3022
3023 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3024 goto err;
3025
3026 /* Copy the data */
3027 skb_put_data(skb, frame_data, frame_data_len);
3028
3029 data2 = get_hwsim_data_ref_from_addr(dst);
3030 if (!data2)
3031 goto out;
3032
3033 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3034 goto out;
3035
3036 if (info->snd_portid != data2->wmediumd)
3037 goto out;
3038
3039 /* check if radio is configured properly */
3040
3041 if (data2->idle || !data2->started)
3042 goto out;
3043
3044 /* A frame is received from user space */
3045 memset(&rx_status, 0, sizeof(rx_status));
3046 if (info->attrs[HWSIM_ATTR_FREQ]) {
3047 /* throw away off-channel packets, but allow both the temporary
3048 * ("hw" scan/remain-on-channel) and regular channel, since the
3049 * internal datapath also allows this
3050 */
3051 mutex_lock(&data2->mutex);
3052 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3053
3054 if (rx_status.freq != data2->channel->center_freq &&
3055 (!data2->tmp_chan ||
3056 rx_status.freq != data2->tmp_chan->center_freq)) {
3057 mutex_unlock(&data2->mutex);
3058 goto out;
3059 }
3060 mutex_unlock(&data2->mutex);
3061 } else {
3062 rx_status.freq = data2->channel->center_freq;
3063 }
3064
3065 rx_status.band = data2->channel->band;
3066 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3067 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3068
3069 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3070 data2->rx_pkts++;
3071 data2->rx_bytes += skb->len;
3072 ieee80211_rx_irqsafe(data2->hw, skb);
3073
3074 return 0;
3075 err:
3076 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3077 out:
3078 dev_kfree_skb(skb);
3079 return -EINVAL;
3080 }
3081
3082 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3083 struct genl_info *info)
3084 {
3085 struct net *net = genl_info_net(info);
3086 struct mac80211_hwsim_data *data;
3087 int chans = 1;
3088
3089 spin_lock_bh(&hwsim_radio_lock);
3090 list_for_each_entry(data, &hwsim_radios, list)
3091 chans = max(chans, data->channels);
3092 spin_unlock_bh(&hwsim_radio_lock);
3093
3094 /* In the future we should revise the userspace API and allow it
3095 * to set a flag that it does support multi-channel, then we can
3096 * let this pass conditionally on the flag.
3097 * For current userspace, prohibit it since it won't work right.
3098 */
3099 if (chans > 1)
3100 return -EOPNOTSUPP;
3101
3102 if (hwsim_net_get_wmediumd(net))
3103 return -EBUSY;
3104
3105 hwsim_register_wmediumd(net, info->snd_portid);
3106
3107 pr_debug("mac80211_hwsim: received a REGISTER, "
3108 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3109
3110 return 0;
3111 }
3112
3113 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3114 {
3115 struct hwsim_new_radio_params param = { 0 };
3116 const char *hwname = NULL;
3117 int ret;
3118
3119 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3120 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3121 param.channels = channels;
3122 param.destroy_on_close =
3123 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3124
3125 if (info->attrs[HWSIM_ATTR_CHANNELS])
3126 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3127
3128 if (info->attrs[HWSIM_ATTR_NO_VIF])
3129 param.no_vif = true;
3130
3131 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3132 hwname = kasprintf(GFP_KERNEL, "%.*s",
3133 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3134 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3135 if (!hwname)
3136 return -ENOMEM;
3137 param.hwname = hwname;
3138 }
3139
3140 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3141 param.use_chanctx = true;
3142 else
3143 param.use_chanctx = (param.channels > 1);
3144
3145 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3146 param.reg_alpha2 =
3147 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3148
3149 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3150 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3151
3152 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3153 return -EINVAL;
3154 param.regd = hwsim_world_regdom_custom[idx];
3155 }
3156
3157 ret = mac80211_hwsim_new_radio(info, &param);
3158 kfree(hwname);
3159 return ret;
3160 }
3161
3162 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3163 {
3164 struct mac80211_hwsim_data *data;
3165 s64 idx = -1;
3166 const char *hwname = NULL;
3167
3168 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3169 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3170 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3171 hwname = kasprintf(GFP_KERNEL, "%.*s",
3172 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3173 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3174 if (!hwname)
3175 return -ENOMEM;
3176 } else
3177 return -EINVAL;
3178
3179 spin_lock_bh(&hwsim_radio_lock);
3180 list_for_each_entry(data, &hwsim_radios, list) {
3181 if (idx >= 0) {
3182 if (data->idx != idx)
3183 continue;
3184 } else {
3185 if (!hwname ||
3186 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3187 continue;
3188 }
3189
3190 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3191 continue;
3192
3193 list_del(&data->list);
3194 spin_unlock_bh(&hwsim_radio_lock);
3195 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3196 info);
3197 kfree(hwname);
3198 return 0;
3199 }
3200 spin_unlock_bh(&hwsim_radio_lock);
3201
3202 kfree(hwname);
3203 return -ENODEV;
3204 }
3205
3206 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3207 {
3208 struct mac80211_hwsim_data *data;
3209 struct sk_buff *skb;
3210 int idx, res = -ENODEV;
3211
3212 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3213 return -EINVAL;
3214 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3215
3216 spin_lock_bh(&hwsim_radio_lock);
3217 list_for_each_entry(data, &hwsim_radios, list) {
3218 if (data->idx != idx)
3219 continue;
3220
3221 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3222 continue;
3223
3224 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3225 if (!skb) {
3226 res = -ENOMEM;
3227 goto out_err;
3228 }
3229
3230 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3231 info->snd_seq, NULL, 0);
3232 if (res < 0) {
3233 nlmsg_free(skb);
3234 goto out_err;
3235 }
3236
3237 genlmsg_reply(skb, info);
3238 break;
3239 }
3240
3241 out_err:
3242 spin_unlock_bh(&hwsim_radio_lock);
3243
3244 return res;
3245 }
3246
3247 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3248 struct netlink_callback *cb)
3249 {
3250 int idx = cb->args[0];
3251 struct mac80211_hwsim_data *data = NULL;
3252 int res;
3253
3254 spin_lock_bh(&hwsim_radio_lock);
3255
3256 if (idx == hwsim_radio_idx)
3257 goto done;
3258
3259 list_for_each_entry(data, &hwsim_radios, list) {
3260 if (data->idx < idx)
3261 continue;
3262
3263 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3264 continue;
3265
3266 res = mac80211_hwsim_get_radio(skb, data,
3267 NETLINK_CB(cb->skb).portid,
3268 cb->nlh->nlmsg_seq, cb,
3269 NLM_F_MULTI);
3270 if (res < 0)
3271 break;
3272
3273 idx = data->idx + 1;
3274 }
3275
3276 cb->args[0] = idx;
3277
3278 done:
3279 spin_unlock_bh(&hwsim_radio_lock);
3280 return skb->len;
3281 }
3282
3283 /* Generic Netlink operations array */
3284 static const struct genl_ops hwsim_ops[] = {
3285 {
3286 .cmd = HWSIM_CMD_REGISTER,
3287 .policy = hwsim_genl_policy,
3288 .doit = hwsim_register_received_nl,
3289 .flags = GENL_UNS_ADMIN_PERM,
3290 },
3291 {
3292 .cmd = HWSIM_CMD_FRAME,
3293 .policy = hwsim_genl_policy,
3294 .doit = hwsim_cloned_frame_received_nl,
3295 },
3296 {
3297 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3298 .policy = hwsim_genl_policy,
3299 .doit = hwsim_tx_info_frame_received_nl,
3300 },
3301 {
3302 .cmd = HWSIM_CMD_NEW_RADIO,
3303 .policy = hwsim_genl_policy,
3304 .doit = hwsim_new_radio_nl,
3305 .flags = GENL_UNS_ADMIN_PERM,
3306 },
3307 {
3308 .cmd = HWSIM_CMD_DEL_RADIO,
3309 .policy = hwsim_genl_policy,
3310 .doit = hwsim_del_radio_nl,
3311 .flags = GENL_UNS_ADMIN_PERM,
3312 },
3313 {
3314 .cmd = HWSIM_CMD_GET_RADIO,
3315 .policy = hwsim_genl_policy,
3316 .doit = hwsim_get_radio_nl,
3317 .dumpit = hwsim_dump_radio_nl,
3318 },
3319 };
3320
3321 static struct genl_family hwsim_genl_family __ro_after_init = {
3322 .name = "MAC80211_HWSIM",
3323 .version = 1,
3324 .maxattr = HWSIM_ATTR_MAX,
3325 .netnsok = true,
3326 .module = THIS_MODULE,
3327 .ops = hwsim_ops,
3328 .n_ops = ARRAY_SIZE(hwsim_ops),
3329 .mcgrps = hwsim_mcgrps,
3330 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3331 };
3332
3333 static void destroy_radio(struct work_struct *work)
3334 {
3335 struct mac80211_hwsim_data *data =
3336 container_of(work, struct mac80211_hwsim_data, destroy_work);
3337
3338 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3339 }
3340
3341 static void remove_user_radios(u32 portid)
3342 {
3343 struct mac80211_hwsim_data *entry, *tmp;
3344
3345 spin_lock_bh(&hwsim_radio_lock);
3346 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3347 if (entry->destroy_on_close && entry->portid == portid) {
3348 list_del(&entry->list);
3349 INIT_WORK(&entry->destroy_work, destroy_radio);
3350 schedule_work(&entry->destroy_work);
3351 }
3352 }
3353 spin_unlock_bh(&hwsim_radio_lock);
3354 }
3355
3356 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3357 unsigned long state,
3358 void *_notify)
3359 {
3360 struct netlink_notify *notify = _notify;
3361
3362 if (state != NETLINK_URELEASE)
3363 return NOTIFY_DONE;
3364
3365 remove_user_radios(notify->portid);
3366
3367 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3368 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3369 " socket, switching to perfect channel medium\n");
3370 hwsim_register_wmediumd(notify->net, 0);
3371 }
3372 return NOTIFY_DONE;
3373
3374 }
3375
3376 static struct notifier_block hwsim_netlink_notifier = {
3377 .notifier_call = mac80211_hwsim_netlink_notify,
3378 };
3379
3380 static int __init hwsim_init_netlink(void)
3381 {
3382 int rc;
3383
3384 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3385
3386 rc = genl_register_family(&hwsim_genl_family);
3387 if (rc)
3388 goto failure;
3389
3390 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3391 if (rc) {
3392 genl_unregister_family(&hwsim_genl_family);
3393 goto failure;
3394 }
3395
3396 return 0;
3397
3398 failure:
3399 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3400 return -EINVAL;
3401 }
3402
3403 static __net_init int hwsim_init_net(struct net *net)
3404 {
3405 hwsim_net_set_netgroup(net);
3406
3407 return 0;
3408 }
3409
3410 static void __net_exit hwsim_exit_net(struct net *net)
3411 {
3412 struct mac80211_hwsim_data *data, *tmp;
3413
3414 spin_lock_bh(&hwsim_radio_lock);
3415 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3416 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3417 continue;
3418
3419 /* Radios created in init_net are returned to init_net. */
3420 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3421 continue;
3422
3423 list_del(&data->list);
3424 INIT_WORK(&data->destroy_work, destroy_radio);
3425 schedule_work(&data->destroy_work);
3426 }
3427 spin_unlock_bh(&hwsim_radio_lock);
3428 }
3429
3430 static struct pernet_operations hwsim_net_ops = {
3431 .init = hwsim_init_net,
3432 .exit = hwsim_exit_net,
3433 .id = &hwsim_net_id,
3434 .size = sizeof(struct hwsim_net),
3435 };
3436
3437 static void hwsim_exit_netlink(void)
3438 {
3439 /* unregister the notifier */
3440 netlink_unregister_notifier(&hwsim_netlink_notifier);
3441 /* unregister the family */
3442 genl_unregister_family(&hwsim_genl_family);
3443 }
3444
3445 static int __init init_mac80211_hwsim(void)
3446 {
3447 int i, err;
3448
3449 if (radios < 0 || radios > 100)
3450 return -EINVAL;
3451
3452 if (channels < 1)
3453 return -EINVAL;
3454
3455 spin_lock_init(&hwsim_radio_lock);
3456
3457 err = register_pernet_device(&hwsim_net_ops);
3458 if (err)
3459 return err;
3460
3461 err = platform_driver_register(&mac80211_hwsim_driver);
3462 if (err)
3463 goto out_unregister_pernet;
3464
3465 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3466 if (IS_ERR(hwsim_class)) {
3467 err = PTR_ERR(hwsim_class);
3468 goto out_unregister_driver;
3469 }
3470
3471 err = hwsim_init_netlink();
3472 if (err < 0)
3473 goto out_unregister_driver;
3474
3475 for (i = 0; i < radios; i++) {
3476 struct hwsim_new_radio_params param = { 0 };
3477
3478 param.channels = channels;
3479
3480 switch (regtest) {
3481 case HWSIM_REGTEST_DIFF_COUNTRY:
3482 if (i < ARRAY_SIZE(hwsim_alpha2s))
3483 param.reg_alpha2 = hwsim_alpha2s[i];
3484 break;
3485 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3486 if (!i)
3487 param.reg_alpha2 = hwsim_alpha2s[0];
3488 break;
3489 case HWSIM_REGTEST_STRICT_ALL:
3490 param.reg_strict = true;
3491 case HWSIM_REGTEST_DRIVER_REG_ALL:
3492 param.reg_alpha2 = hwsim_alpha2s[0];
3493 break;
3494 case HWSIM_REGTEST_WORLD_ROAM:
3495 if (i == 0)
3496 param.regd = &hwsim_world_regdom_custom_01;
3497 break;
3498 case HWSIM_REGTEST_CUSTOM_WORLD:
3499 param.regd = &hwsim_world_regdom_custom_01;
3500 break;
3501 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3502 if (i == 0)
3503 param.regd = &hwsim_world_regdom_custom_01;
3504 else if (i == 1)
3505 param.regd = &hwsim_world_regdom_custom_02;
3506 break;
3507 case HWSIM_REGTEST_STRICT_FOLLOW:
3508 if (i == 0) {
3509 param.reg_strict = true;
3510 param.reg_alpha2 = hwsim_alpha2s[0];
3511 }
3512 break;
3513 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3514 if (i == 0) {
3515 param.reg_strict = true;
3516 param.reg_alpha2 = hwsim_alpha2s[0];
3517 } else if (i == 1) {
3518 param.reg_alpha2 = hwsim_alpha2s[1];
3519 }
3520 break;
3521 case HWSIM_REGTEST_ALL:
3522 switch (i) {
3523 case 0:
3524 param.regd = &hwsim_world_regdom_custom_01;
3525 break;
3526 case 1:
3527 param.regd = &hwsim_world_regdom_custom_02;
3528 break;
3529 case 2:
3530 param.reg_alpha2 = hwsim_alpha2s[0];
3531 break;
3532 case 3:
3533 param.reg_alpha2 = hwsim_alpha2s[1];
3534 break;
3535 case 4:
3536 param.reg_strict = true;
3537 param.reg_alpha2 = hwsim_alpha2s[2];
3538 break;
3539 }
3540 break;
3541 default:
3542 break;
3543 }
3544
3545 param.p2p_device = support_p2p_device;
3546 param.use_chanctx = channels > 1;
3547
3548 err = mac80211_hwsim_new_radio(NULL, &param);
3549 if (err < 0)
3550 goto out_free_radios;
3551 }
3552
3553 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3554 hwsim_mon_setup);
3555 if (hwsim_mon == NULL) {
3556 err = -ENOMEM;
3557 goto out_free_radios;
3558 }
3559
3560 rtnl_lock();
3561 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3562 if (err < 0) {
3563 rtnl_unlock();
3564 goto out_free_radios;
3565 }
3566
3567 err = register_netdevice(hwsim_mon);
3568 if (err < 0) {
3569 rtnl_unlock();
3570 goto out_free_mon;
3571 }
3572 rtnl_unlock();
3573
3574 return 0;
3575
3576 out_free_mon:
3577 free_netdev(hwsim_mon);
3578 out_free_radios:
3579 mac80211_hwsim_free();
3580 out_unregister_driver:
3581 platform_driver_unregister(&mac80211_hwsim_driver);
3582 out_unregister_pernet:
3583 unregister_pernet_device(&hwsim_net_ops);
3584 return err;
3585 }
3586 module_init(init_mac80211_hwsim);
3587
3588 static void __exit exit_mac80211_hwsim(void)
3589 {
3590 pr_debug("mac80211_hwsim: unregister radios\n");
3591
3592 hwsim_exit_netlink();
3593
3594 mac80211_hwsim_free();
3595 unregister_netdev(hwsim_mon);
3596 platform_driver_unregister(&mac80211_hwsim_driver);
3597 unregister_pernet_device(&hwsim_net_ops);
3598 }
3599 module_exit(exit_mac80211_hwsim);
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