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Merge 4.14.24 into android-4.14
[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / drivers / net / wireless / mac80211_hwsim.c
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_debug(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_debug(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_debug(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 (ps ? IEEE80211_FCTL_PM : 0));
688 hdr->duration_id = cpu_to_le16(0);
689 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
690 memcpy(hdr->addr2, mac, ETH_ALEN);
691 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
692
693 rcu_read_lock();
694 mac80211_hwsim_tx_frame(data->hw, skb,
695 rcu_dereference(vif->chanctx_conf)->def.chan);
696 rcu_read_unlock();
697 }
698
699
700 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
701 struct ieee80211_vif *vif)
702 {
703 struct mac80211_hwsim_data *data = dat;
704 hwsim_send_nullfunc(data, mac, vif, 1);
705 }
706
707 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
708 struct ieee80211_vif *vif)
709 {
710 struct mac80211_hwsim_data *data = dat;
711 hwsim_send_nullfunc(data, mac, vif, 0);
712 }
713
714 static int hwsim_fops_ps_read(void *dat, u64 *val)
715 {
716 struct mac80211_hwsim_data *data = dat;
717 *val = data->ps;
718 return 0;
719 }
720
721 static int hwsim_fops_ps_write(void *dat, u64 val)
722 {
723 struct mac80211_hwsim_data *data = dat;
724 enum ps_mode old_ps;
725
726 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
727 val != PS_MANUAL_POLL)
728 return -EINVAL;
729
730 old_ps = data->ps;
731 data->ps = val;
732
733 local_bh_disable();
734 if (val == PS_MANUAL_POLL) {
735 ieee80211_iterate_active_interfaces_atomic(
736 data->hw, IEEE80211_IFACE_ITER_NORMAL,
737 hwsim_send_ps_poll, data);
738 data->ps_poll_pending = true;
739 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
740 ieee80211_iterate_active_interfaces_atomic(
741 data->hw, IEEE80211_IFACE_ITER_NORMAL,
742 hwsim_send_nullfunc_ps, data);
743 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
744 ieee80211_iterate_active_interfaces_atomic(
745 data->hw, IEEE80211_IFACE_ITER_NORMAL,
746 hwsim_send_nullfunc_no_ps, data);
747 }
748 local_bh_enable();
749
750 return 0;
751 }
752
753 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
754 "%llu\n");
755
756 static int hwsim_write_simulate_radar(void *dat, u64 val)
757 {
758 struct mac80211_hwsim_data *data = dat;
759
760 ieee80211_radar_detected(data->hw);
761
762 return 0;
763 }
764
765 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
766 hwsim_write_simulate_radar, "%llu\n");
767
768 static int hwsim_fops_group_read(void *dat, u64 *val)
769 {
770 struct mac80211_hwsim_data *data = dat;
771 *val = data->group;
772 return 0;
773 }
774
775 static int hwsim_fops_group_write(void *dat, u64 val)
776 {
777 struct mac80211_hwsim_data *data = dat;
778 data->group = val;
779 return 0;
780 }
781
782 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
783 hwsim_fops_group_read, hwsim_fops_group_write,
784 "%llx\n");
785
786 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
787 struct net_device *dev)
788 {
789 /* TODO: allow packet injection */
790 dev_kfree_skb(skb);
791 return NETDEV_TX_OK;
792 }
793
794 static inline u64 mac80211_hwsim_get_tsf_raw(void)
795 {
796 return ktime_to_us(ktime_get_real());
797 }
798
799 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
800 {
801 u64 now = mac80211_hwsim_get_tsf_raw();
802 return cpu_to_le64(now + data->tsf_offset);
803 }
804
805 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
806 struct ieee80211_vif *vif)
807 {
808 struct mac80211_hwsim_data *data = hw->priv;
809 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
810 }
811
812 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
813 struct ieee80211_vif *vif, u64 tsf)
814 {
815 struct mac80211_hwsim_data *data = hw->priv;
816 u64 now = mac80211_hwsim_get_tsf(hw, vif);
817 u32 bcn_int = data->beacon_int;
818 u64 delta = abs(tsf - now);
819
820 /* adjust after beaconing with new timestamp at old TBTT */
821 if (tsf > now) {
822 data->tsf_offset += delta;
823 data->bcn_delta = do_div(delta, bcn_int);
824 } else {
825 data->tsf_offset -= delta;
826 data->bcn_delta = -(s64)do_div(delta, bcn_int);
827 }
828 }
829
830 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
831 struct sk_buff *tx_skb,
832 struct ieee80211_channel *chan)
833 {
834 struct mac80211_hwsim_data *data = hw->priv;
835 struct sk_buff *skb;
836 struct hwsim_radiotap_hdr *hdr;
837 u16 flags;
838 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
839 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
840
841 if (WARN_ON(!txrate))
842 return;
843
844 if (!netif_running(hwsim_mon))
845 return;
846
847 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
848 if (skb == NULL)
849 return;
850
851 hdr = skb_push(skb, sizeof(*hdr));
852 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
853 hdr->hdr.it_pad = 0;
854 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
855 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
856 (1 << IEEE80211_RADIOTAP_RATE) |
857 (1 << IEEE80211_RADIOTAP_TSFT) |
858 (1 << IEEE80211_RADIOTAP_CHANNEL));
859 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
860 hdr->rt_flags = 0;
861 hdr->rt_rate = txrate->bitrate / 5;
862 hdr->rt_channel = cpu_to_le16(chan->center_freq);
863 flags = IEEE80211_CHAN_2GHZ;
864 if (txrate->flags & IEEE80211_RATE_ERP_G)
865 flags |= IEEE80211_CHAN_OFDM;
866 else
867 flags |= IEEE80211_CHAN_CCK;
868 hdr->rt_chbitmask = cpu_to_le16(flags);
869
870 skb->dev = hwsim_mon;
871 skb_reset_mac_header(skb);
872 skb->ip_summed = CHECKSUM_UNNECESSARY;
873 skb->pkt_type = PACKET_OTHERHOST;
874 skb->protocol = htons(ETH_P_802_2);
875 memset(skb->cb, 0, sizeof(skb->cb));
876 netif_rx(skb);
877 }
878
879
880 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
881 const u8 *addr)
882 {
883 struct sk_buff *skb;
884 struct hwsim_radiotap_ack_hdr *hdr;
885 u16 flags;
886 struct ieee80211_hdr *hdr11;
887
888 if (!netif_running(hwsim_mon))
889 return;
890
891 skb = dev_alloc_skb(100);
892 if (skb == NULL)
893 return;
894
895 hdr = skb_put(skb, sizeof(*hdr));
896 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
897 hdr->hdr.it_pad = 0;
898 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
899 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
900 (1 << IEEE80211_RADIOTAP_CHANNEL));
901 hdr->rt_flags = 0;
902 hdr->pad = 0;
903 hdr->rt_channel = cpu_to_le16(chan->center_freq);
904 flags = IEEE80211_CHAN_2GHZ;
905 hdr->rt_chbitmask = cpu_to_le16(flags);
906
907 hdr11 = skb_put(skb, 10);
908 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
909 IEEE80211_STYPE_ACK);
910 hdr11->duration_id = cpu_to_le16(0);
911 memcpy(hdr11->addr1, addr, ETH_ALEN);
912
913 skb->dev = hwsim_mon;
914 skb_reset_mac_header(skb);
915 skb->ip_summed = CHECKSUM_UNNECESSARY;
916 skb->pkt_type = PACKET_OTHERHOST;
917 skb->protocol = htons(ETH_P_802_2);
918 memset(skb->cb, 0, sizeof(skb->cb));
919 netif_rx(skb);
920 }
921
922 struct mac80211_hwsim_addr_match_data {
923 u8 addr[ETH_ALEN];
924 bool ret;
925 };
926
927 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
928 struct ieee80211_vif *vif)
929 {
930 struct mac80211_hwsim_addr_match_data *md = data;
931
932 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
933 md->ret = true;
934 }
935
936 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
937 const u8 *addr)
938 {
939 struct mac80211_hwsim_addr_match_data md = {
940 .ret = false,
941 };
942
943 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
944 return true;
945
946 memcpy(md.addr, addr, ETH_ALEN);
947
948 ieee80211_iterate_active_interfaces_atomic(data->hw,
949 IEEE80211_IFACE_ITER_NORMAL,
950 mac80211_hwsim_addr_iter,
951 &md);
952
953 return md.ret;
954 }
955
956 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
957 struct sk_buff *skb)
958 {
959 switch (data->ps) {
960 case PS_DISABLED:
961 return true;
962 case PS_ENABLED:
963 return false;
964 case PS_AUTO_POLL:
965 /* TODO: accept (some) Beacons by default and other frames only
966 * if pending PS-Poll has been sent */
967 return true;
968 case PS_MANUAL_POLL:
969 /* Allow unicast frames to own address if there is a pending
970 * PS-Poll */
971 if (data->ps_poll_pending &&
972 mac80211_hwsim_addr_match(data, skb->data + 4)) {
973 data->ps_poll_pending = false;
974 return true;
975 }
976 return false;
977 }
978
979 return true;
980 }
981
982 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
983 struct sk_buff *skb, int portid)
984 {
985 struct net *net;
986 bool found = false;
987 int res = -ENOENT;
988
989 rcu_read_lock();
990 for_each_net_rcu(net) {
991 if (data->netgroup == hwsim_net_get_netgroup(net)) {
992 res = genlmsg_unicast(net, skb, portid);
993 found = true;
994 break;
995 }
996 }
997 rcu_read_unlock();
998
999 if (!found)
1000 nlmsg_free(skb);
1001
1002 return res;
1003 }
1004
1005 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1006 struct sk_buff *my_skb,
1007 int dst_portid)
1008 {
1009 struct sk_buff *skb;
1010 struct mac80211_hwsim_data *data = hw->priv;
1011 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1012 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1013 void *msg_head;
1014 unsigned int hwsim_flags = 0;
1015 int i;
1016 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1017 uintptr_t cookie;
1018
1019 if (data->ps != PS_DISABLED)
1020 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1021 /* If the queue contains MAX_QUEUE skb's drop some */
1022 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1023 /* Droping until WARN_QUEUE level */
1024 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1025 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1026 data->tx_dropped++;
1027 }
1028 }
1029
1030 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1031 if (skb == NULL)
1032 goto nla_put_failure;
1033
1034 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1035 HWSIM_CMD_FRAME);
1036 if (msg_head == NULL) {
1037 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1038 goto nla_put_failure;
1039 }
1040
1041 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1042 ETH_ALEN, data->addresses[1].addr))
1043 goto nla_put_failure;
1044
1045 /* We get the skb->data */
1046 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1047 goto nla_put_failure;
1048
1049 /* We get the flags for this transmission, and we translate them to
1050 wmediumd flags */
1051
1052 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1053 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1054
1055 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1056 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1057
1058 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1059 goto nla_put_failure;
1060
1061 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1062 goto nla_put_failure;
1063
1064 /* We get the tx control (rate and retries) info*/
1065
1066 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1067 tx_attempts[i].idx = info->status.rates[i].idx;
1068 tx_attempts[i].count = info->status.rates[i].count;
1069 }
1070
1071 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1072 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1073 tx_attempts))
1074 goto nla_put_failure;
1075
1076 /* We create a cookie to identify this skb */
1077 data->pending_cookie++;
1078 cookie = data->pending_cookie;
1079 info->rate_driver_data[0] = (void *)cookie;
1080 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1081 goto nla_put_failure;
1082
1083 genlmsg_end(skb, msg_head);
1084 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1085 goto err_free_txskb;
1086
1087 /* Enqueue the packet */
1088 skb_queue_tail(&data->pending, my_skb);
1089 data->tx_pkts++;
1090 data->tx_bytes += my_skb->len;
1091 return;
1092
1093 nla_put_failure:
1094 nlmsg_free(skb);
1095 err_free_txskb:
1096 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1097 ieee80211_free_txskb(hw, my_skb);
1098 data->tx_failed++;
1099 }
1100
1101 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1102 struct ieee80211_channel *c2)
1103 {
1104 if (!c1 || !c2)
1105 return false;
1106
1107 return c1->center_freq == c2->center_freq;
1108 }
1109
1110 struct tx_iter_data {
1111 struct ieee80211_channel *channel;
1112 bool receive;
1113 };
1114
1115 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1116 struct ieee80211_vif *vif)
1117 {
1118 struct tx_iter_data *data = _data;
1119
1120 if (!vif->chanctx_conf)
1121 return;
1122
1123 if (!hwsim_chans_compat(data->channel,
1124 rcu_dereference(vif->chanctx_conf)->def.chan))
1125 return;
1126
1127 data->receive = true;
1128 }
1129
1130 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1131 {
1132 /*
1133 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1134 * e.g. like this:
1135 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1136 * (but you should use a valid OUI, not that)
1137 *
1138 * If anyone wants to 'donate' a radiotap OUI/subns code
1139 * please send a patch removing this #ifdef and changing
1140 * the values accordingly.
1141 */
1142 #ifdef HWSIM_RADIOTAP_OUI
1143 struct ieee80211_vendor_radiotap *rtap;
1144
1145 /*
1146 * Note that this code requires the headroom in the SKB
1147 * that was allocated earlier.
1148 */
1149 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1150 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1151 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1152 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1153 rtap->subns = 127;
1154
1155 /*
1156 * Radiotap vendor namespaces can (and should) also be
1157 * split into fields by using the standard radiotap
1158 * presence bitmap mechanism. Use just BIT(0) here for
1159 * the presence bitmap.
1160 */
1161 rtap->present = BIT(0);
1162 /* We have 8 bytes of (dummy) data */
1163 rtap->len = 8;
1164 /* For testing, also require it to be aligned */
1165 rtap->align = 8;
1166 /* And also test that padding works, 4 bytes */
1167 rtap->pad = 4;
1168 /* push the data */
1169 memcpy(rtap->data, "ABCDEFGH", 8);
1170 /* make sure to clear padding, mac80211 doesn't */
1171 memset(rtap->data + 8, 0, 4);
1172
1173 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1174 #endif
1175 }
1176
1177 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1178 struct sk_buff *skb,
1179 struct ieee80211_channel *chan)
1180 {
1181 struct mac80211_hwsim_data *data = hw->priv, *data2;
1182 bool ack = false;
1183 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1184 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1185 struct ieee80211_rx_status rx_status;
1186 u64 now;
1187
1188 memset(&rx_status, 0, sizeof(rx_status));
1189 rx_status.flag |= RX_FLAG_MACTIME_START;
1190 rx_status.freq = chan->center_freq;
1191 rx_status.band = chan->band;
1192 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1193 rx_status.rate_idx =
1194 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1195 rx_status.nss =
1196 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1197 rx_status.encoding = RX_ENC_VHT;
1198 } else {
1199 rx_status.rate_idx = info->control.rates[0].idx;
1200 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1201 rx_status.encoding = RX_ENC_HT;
1202 }
1203 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1204 rx_status.bw = RATE_INFO_BW_40;
1205 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1206 rx_status.bw = RATE_INFO_BW_80;
1207 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1208 rx_status.bw = RATE_INFO_BW_160;
1209 else
1210 rx_status.bw = RATE_INFO_BW_20;
1211 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1212 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1213 /* TODO: simulate real signal strength (and optional packet loss) */
1214 rx_status.signal = -50;
1215 if (info->control.vif)
1216 rx_status.signal += info->control.vif->bss_conf.txpower;
1217
1218 if (data->ps != PS_DISABLED)
1219 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1220
1221 /* release the skb's source info */
1222 skb_orphan(skb);
1223 skb_dst_drop(skb);
1224 skb->mark = 0;
1225 secpath_reset(skb);
1226 nf_reset(skb);
1227
1228 /*
1229 * Get absolute mactime here so all HWs RX at the "same time", and
1230 * absolute TX time for beacon mactime so the timestamp matches.
1231 * Giving beacons a different mactime than non-beacons looks messy, but
1232 * it helps the Toffset be exact and a ~10us mactime discrepancy
1233 * probably doesn't really matter.
1234 */
1235 if (ieee80211_is_beacon(hdr->frame_control) ||
1236 ieee80211_is_probe_resp(hdr->frame_control))
1237 now = data->abs_bcn_ts;
1238 else
1239 now = mac80211_hwsim_get_tsf_raw();
1240
1241 /* Copy skb to all enabled radios that are on the current frequency */
1242 spin_lock(&hwsim_radio_lock);
1243 list_for_each_entry(data2, &hwsim_radios, list) {
1244 struct sk_buff *nskb;
1245 struct tx_iter_data tx_iter_data = {
1246 .receive = false,
1247 .channel = chan,
1248 };
1249
1250 if (data == data2)
1251 continue;
1252
1253 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1254 !hwsim_ps_rx_ok(data2, skb))
1255 continue;
1256
1257 if (!(data->group & data2->group))
1258 continue;
1259
1260 if (data->netgroup != data2->netgroup)
1261 continue;
1262
1263 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1264 !hwsim_chans_compat(chan, data2->channel)) {
1265 ieee80211_iterate_active_interfaces_atomic(
1266 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1267 mac80211_hwsim_tx_iter, &tx_iter_data);
1268 if (!tx_iter_data.receive)
1269 continue;
1270 }
1271
1272 /*
1273 * reserve some space for our vendor and the normal
1274 * radiotap header, since we're copying anyway
1275 */
1276 if (skb->len < PAGE_SIZE && paged_rx) {
1277 struct page *page = alloc_page(GFP_ATOMIC);
1278
1279 if (!page)
1280 continue;
1281
1282 nskb = dev_alloc_skb(128);
1283 if (!nskb) {
1284 __free_page(page);
1285 continue;
1286 }
1287
1288 memcpy(page_address(page), skb->data, skb->len);
1289 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1290 } else {
1291 nskb = skb_copy(skb, GFP_ATOMIC);
1292 if (!nskb)
1293 continue;
1294 }
1295
1296 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1297 ack = true;
1298
1299 rx_status.mactime = now + data2->tsf_offset;
1300
1301 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1302
1303 mac80211_hwsim_add_vendor_rtap(nskb);
1304
1305 data2->rx_pkts++;
1306 data2->rx_bytes += nskb->len;
1307 ieee80211_rx_irqsafe(data2->hw, nskb);
1308 }
1309 spin_unlock(&hwsim_radio_lock);
1310
1311 return ack;
1312 }
1313
1314 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1315 struct ieee80211_tx_control *control,
1316 struct sk_buff *skb)
1317 {
1318 struct mac80211_hwsim_data *data = hw->priv;
1319 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1320 struct ieee80211_hdr *hdr = (void *)skb->data;
1321 struct ieee80211_chanctx_conf *chanctx_conf;
1322 struct ieee80211_channel *channel;
1323 bool ack;
1324 u32 _portid;
1325
1326 if (WARN_ON(skb->len < 10)) {
1327 /* Should not happen; just a sanity check for addr1 use */
1328 ieee80211_free_txskb(hw, skb);
1329 return;
1330 }
1331
1332 if (!data->use_chanctx) {
1333 channel = data->channel;
1334 } else if (txi->hw_queue == 4) {
1335 channel = data->tmp_chan;
1336 } else {
1337 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1338 if (chanctx_conf)
1339 channel = chanctx_conf->def.chan;
1340 else
1341 channel = NULL;
1342 }
1343
1344 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1345 ieee80211_free_txskb(hw, skb);
1346 return;
1347 }
1348
1349 if (data->idle && !data->tmp_chan) {
1350 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1351 ieee80211_free_txskb(hw, skb);
1352 return;
1353 }
1354
1355 if (txi->control.vif)
1356 hwsim_check_magic(txi->control.vif);
1357 if (control->sta)
1358 hwsim_check_sta_magic(control->sta);
1359
1360 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1361 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1362 txi->control.rates,
1363 ARRAY_SIZE(txi->control.rates));
1364
1365 if (skb->len >= 24 + 8 &&
1366 ieee80211_is_probe_resp(hdr->frame_control)) {
1367 /* fake header transmission time */
1368 struct ieee80211_mgmt *mgmt;
1369 struct ieee80211_rate *txrate;
1370 u64 ts;
1371
1372 mgmt = (struct ieee80211_mgmt *)skb->data;
1373 txrate = ieee80211_get_tx_rate(hw, txi);
1374 ts = mac80211_hwsim_get_tsf_raw();
1375 mgmt->u.probe_resp.timestamp =
1376 cpu_to_le64(ts + data->tsf_offset +
1377 24 * 8 * 10 / txrate->bitrate);
1378 }
1379
1380 mac80211_hwsim_monitor_rx(hw, skb, channel);
1381
1382 /* wmediumd mode check */
1383 _portid = ACCESS_ONCE(data->wmediumd);
1384
1385 if (_portid)
1386 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1387
1388 /* NO wmediumd detected, perfect medium simulation */
1389 data->tx_pkts++;
1390 data->tx_bytes += skb->len;
1391 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1392
1393 if (ack && skb->len >= 16)
1394 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1395
1396 ieee80211_tx_info_clear_status(txi);
1397
1398 /* frame was transmitted at most favorable rate at first attempt */
1399 txi->control.rates[0].count = 1;
1400 txi->control.rates[1].idx = -1;
1401
1402 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1403 txi->flags |= IEEE80211_TX_STAT_ACK;
1404 ieee80211_tx_status_irqsafe(hw, skb);
1405 }
1406
1407
1408 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1409 {
1410 struct mac80211_hwsim_data *data = hw->priv;
1411 wiphy_debug(hw->wiphy, "%s\n", __func__);
1412 data->started = true;
1413 return 0;
1414 }
1415
1416
1417 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1418 {
1419 struct mac80211_hwsim_data *data = hw->priv;
1420 data->started = false;
1421 tasklet_hrtimer_cancel(&data->beacon_timer);
1422 wiphy_debug(hw->wiphy, "%s\n", __func__);
1423 }
1424
1425
1426 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1427 struct ieee80211_vif *vif)
1428 {
1429 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1430 __func__, ieee80211_vif_type_p2p(vif),
1431 vif->addr);
1432 hwsim_set_magic(vif);
1433
1434 vif->cab_queue = 0;
1435 vif->hw_queue[IEEE80211_AC_VO] = 0;
1436 vif->hw_queue[IEEE80211_AC_VI] = 1;
1437 vif->hw_queue[IEEE80211_AC_BE] = 2;
1438 vif->hw_queue[IEEE80211_AC_BK] = 3;
1439
1440 return 0;
1441 }
1442
1443
1444 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1445 struct ieee80211_vif *vif,
1446 enum nl80211_iftype newtype,
1447 bool newp2p)
1448 {
1449 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1450 wiphy_debug(hw->wiphy,
1451 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1452 __func__, ieee80211_vif_type_p2p(vif),
1453 newtype, vif->addr);
1454 hwsim_check_magic(vif);
1455
1456 /*
1457 * interface may change from non-AP to AP in
1458 * which case this needs to be set up again
1459 */
1460 vif->cab_queue = 0;
1461
1462 return 0;
1463 }
1464
1465 static void mac80211_hwsim_remove_interface(
1466 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1467 {
1468 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1469 __func__, ieee80211_vif_type_p2p(vif),
1470 vif->addr);
1471 hwsim_check_magic(vif);
1472 hwsim_clear_magic(vif);
1473 }
1474
1475 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1476 struct sk_buff *skb,
1477 struct ieee80211_channel *chan)
1478 {
1479 struct mac80211_hwsim_data *data = hw->priv;
1480 u32 _pid = ACCESS_ONCE(data->wmediumd);
1481
1482 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1483 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1484 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1485 txi->control.rates,
1486 ARRAY_SIZE(txi->control.rates));
1487 }
1488
1489 mac80211_hwsim_monitor_rx(hw, skb, chan);
1490
1491 if (_pid)
1492 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1493
1494 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1495 dev_kfree_skb(skb);
1496 }
1497
1498 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1499 struct ieee80211_vif *vif)
1500 {
1501 struct mac80211_hwsim_data *data = arg;
1502 struct ieee80211_hw *hw = data->hw;
1503 struct ieee80211_tx_info *info;
1504 struct ieee80211_rate *txrate;
1505 struct ieee80211_mgmt *mgmt;
1506 struct sk_buff *skb;
1507
1508 hwsim_check_magic(vif);
1509
1510 if (vif->type != NL80211_IFTYPE_AP &&
1511 vif->type != NL80211_IFTYPE_MESH_POINT &&
1512 vif->type != NL80211_IFTYPE_ADHOC)
1513 return;
1514
1515 skb = ieee80211_beacon_get(hw, vif);
1516 if (skb == NULL)
1517 return;
1518 info = IEEE80211_SKB_CB(skb);
1519 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1520 ieee80211_get_tx_rates(vif, NULL, skb,
1521 info->control.rates,
1522 ARRAY_SIZE(info->control.rates));
1523
1524 txrate = ieee80211_get_tx_rate(hw, info);
1525
1526 mgmt = (struct ieee80211_mgmt *) skb->data;
1527 /* fake header transmission time */
1528 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1529 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1530 data->tsf_offset +
1531 24 * 8 * 10 / txrate->bitrate);
1532
1533 mac80211_hwsim_tx_frame(hw, skb,
1534 rcu_dereference(vif->chanctx_conf)->def.chan);
1535
1536 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1537 ieee80211_csa_finish(vif);
1538 }
1539
1540 static enum hrtimer_restart
1541 mac80211_hwsim_beacon(struct hrtimer *timer)
1542 {
1543 struct mac80211_hwsim_data *data =
1544 container_of(timer, struct mac80211_hwsim_data,
1545 beacon_timer.timer);
1546 struct ieee80211_hw *hw = data->hw;
1547 u64 bcn_int = data->beacon_int;
1548 ktime_t next_bcn;
1549
1550 if (!data->started)
1551 goto out;
1552
1553 ieee80211_iterate_active_interfaces_atomic(
1554 hw, IEEE80211_IFACE_ITER_NORMAL,
1555 mac80211_hwsim_beacon_tx, data);
1556
1557 /* beacon at new TBTT + beacon interval */
1558 if (data->bcn_delta) {
1559 bcn_int -= data->bcn_delta;
1560 data->bcn_delta = 0;
1561 }
1562
1563 next_bcn = ktime_add(hrtimer_get_expires(timer),
1564 ns_to_ktime(bcn_int * 1000));
1565 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1566 out:
1567 return HRTIMER_NORESTART;
1568 }
1569
1570 static const char * const hwsim_chanwidths[] = {
1571 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1572 [NL80211_CHAN_WIDTH_20] = "ht20",
1573 [NL80211_CHAN_WIDTH_40] = "ht40",
1574 [NL80211_CHAN_WIDTH_80] = "vht80",
1575 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1576 [NL80211_CHAN_WIDTH_160] = "vht160",
1577 };
1578
1579 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1580 {
1581 struct mac80211_hwsim_data *data = hw->priv;
1582 struct ieee80211_conf *conf = &hw->conf;
1583 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1584 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1585 [IEEE80211_SMPS_OFF] = "off",
1586 [IEEE80211_SMPS_STATIC] = "static",
1587 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1588 };
1589 int idx;
1590
1591 if (conf->chandef.chan)
1592 wiphy_debug(hw->wiphy,
1593 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1594 __func__,
1595 conf->chandef.chan->center_freq,
1596 conf->chandef.center_freq1,
1597 conf->chandef.center_freq2,
1598 hwsim_chanwidths[conf->chandef.width],
1599 !!(conf->flags & IEEE80211_CONF_IDLE),
1600 !!(conf->flags & IEEE80211_CONF_PS),
1601 smps_modes[conf->smps_mode]);
1602 else
1603 wiphy_debug(hw->wiphy,
1604 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1605 __func__,
1606 !!(conf->flags & IEEE80211_CONF_IDLE),
1607 !!(conf->flags & IEEE80211_CONF_PS),
1608 smps_modes[conf->smps_mode]);
1609
1610 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1611
1612 WARN_ON(conf->chandef.chan && data->use_chanctx);
1613
1614 mutex_lock(&data->mutex);
1615 if (data->scanning && conf->chandef.chan) {
1616 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1617 if (data->survey_data[idx].channel == data->channel) {
1618 data->survey_data[idx].start =
1619 data->survey_data[idx].next_start;
1620 data->survey_data[idx].end = jiffies;
1621 break;
1622 }
1623 }
1624
1625 data->channel = conf->chandef.chan;
1626
1627 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1628 if (data->survey_data[idx].channel &&
1629 data->survey_data[idx].channel != data->channel)
1630 continue;
1631 data->survey_data[idx].channel = data->channel;
1632 data->survey_data[idx].next_start = jiffies;
1633 break;
1634 }
1635 } else {
1636 data->channel = conf->chandef.chan;
1637 }
1638 mutex_unlock(&data->mutex);
1639
1640 if (!data->started || !data->beacon_int)
1641 tasklet_hrtimer_cancel(&data->beacon_timer);
1642 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1643 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1644 u32 bcn_int = data->beacon_int;
1645 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1646
1647 tasklet_hrtimer_start(&data->beacon_timer,
1648 ns_to_ktime(until_tbtt * 1000),
1649 HRTIMER_MODE_REL);
1650 }
1651
1652 return 0;
1653 }
1654
1655
1656 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1657 unsigned int changed_flags,
1658 unsigned int *total_flags,u64 multicast)
1659 {
1660 struct mac80211_hwsim_data *data = hw->priv;
1661
1662 wiphy_debug(hw->wiphy, "%s\n", __func__);
1663
1664 data->rx_filter = 0;
1665 if (*total_flags & FIF_ALLMULTI)
1666 data->rx_filter |= FIF_ALLMULTI;
1667
1668 *total_flags = data->rx_filter;
1669 }
1670
1671 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1672 struct ieee80211_vif *vif)
1673 {
1674 unsigned int *count = data;
1675 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1676
1677 if (vp->bcn_en)
1678 (*count)++;
1679 }
1680
1681 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1682 struct ieee80211_vif *vif,
1683 struct ieee80211_bss_conf *info,
1684 u32 changed)
1685 {
1686 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1687 struct mac80211_hwsim_data *data = hw->priv;
1688
1689 hwsim_check_magic(vif);
1690
1691 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1692 __func__, changed, vif->addr);
1693
1694 if (changed & BSS_CHANGED_BSSID) {
1695 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1696 __func__, info->bssid);
1697 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1698 }
1699
1700 if (changed & BSS_CHANGED_ASSOC) {
1701 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1702 info->assoc, info->aid);
1703 vp->assoc = info->assoc;
1704 vp->aid = info->aid;
1705 }
1706
1707 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1708 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1709 info->enable_beacon, info->beacon_int);
1710 vp->bcn_en = info->enable_beacon;
1711 if (data->started &&
1712 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1713 info->enable_beacon) {
1714 u64 tsf, until_tbtt;
1715 u32 bcn_int;
1716 data->beacon_int = info->beacon_int * 1024;
1717 tsf = mac80211_hwsim_get_tsf(hw, vif);
1718 bcn_int = data->beacon_int;
1719 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1720 tasklet_hrtimer_start(&data->beacon_timer,
1721 ns_to_ktime(until_tbtt * 1000),
1722 HRTIMER_MODE_REL);
1723 } else if (!info->enable_beacon) {
1724 unsigned int count = 0;
1725 ieee80211_iterate_active_interfaces_atomic(
1726 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1727 mac80211_hwsim_bcn_en_iter, &count);
1728 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1729 count);
1730 if (count == 0) {
1731 tasklet_hrtimer_cancel(&data->beacon_timer);
1732 data->beacon_int = 0;
1733 }
1734 }
1735 }
1736
1737 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1738 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1739 info->use_cts_prot);
1740 }
1741
1742 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1743 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1744 info->use_short_preamble);
1745 }
1746
1747 if (changed & BSS_CHANGED_ERP_SLOT) {
1748 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1749 }
1750
1751 if (changed & BSS_CHANGED_HT) {
1752 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1753 info->ht_operation_mode);
1754 }
1755
1756 if (changed & BSS_CHANGED_BASIC_RATES) {
1757 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1758 (unsigned long long) info->basic_rates);
1759 }
1760
1761 if (changed & BSS_CHANGED_TXPOWER)
1762 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1763 }
1764
1765 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1766 struct ieee80211_vif *vif,
1767 struct ieee80211_sta *sta)
1768 {
1769 hwsim_check_magic(vif);
1770 hwsim_set_sta_magic(sta);
1771
1772 return 0;
1773 }
1774
1775 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1776 struct ieee80211_vif *vif,
1777 struct ieee80211_sta *sta)
1778 {
1779 hwsim_check_magic(vif);
1780 hwsim_clear_sta_magic(sta);
1781
1782 return 0;
1783 }
1784
1785 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1786 struct ieee80211_vif *vif,
1787 enum sta_notify_cmd cmd,
1788 struct ieee80211_sta *sta)
1789 {
1790 hwsim_check_magic(vif);
1791
1792 switch (cmd) {
1793 case STA_NOTIFY_SLEEP:
1794 case STA_NOTIFY_AWAKE:
1795 /* TODO: make good use of these flags */
1796 break;
1797 default:
1798 WARN(1, "Invalid sta notify: %d\n", cmd);
1799 break;
1800 }
1801 }
1802
1803 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1804 struct ieee80211_sta *sta,
1805 bool set)
1806 {
1807 hwsim_check_sta_magic(sta);
1808 return 0;
1809 }
1810
1811 static int mac80211_hwsim_conf_tx(
1812 struct ieee80211_hw *hw,
1813 struct ieee80211_vif *vif, u16 queue,
1814 const struct ieee80211_tx_queue_params *params)
1815 {
1816 wiphy_debug(hw->wiphy,
1817 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1818 __func__, queue,
1819 params->txop, params->cw_min,
1820 params->cw_max, params->aifs);
1821 return 0;
1822 }
1823
1824 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1825 struct survey_info *survey)
1826 {
1827 struct mac80211_hwsim_data *hwsim = hw->priv;
1828
1829 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1830 return -ENOENT;
1831
1832 mutex_lock(&hwsim->mutex);
1833 survey->channel = hwsim->survey_data[idx].channel;
1834 if (!survey->channel) {
1835 mutex_unlock(&hwsim->mutex);
1836 return -ENOENT;
1837 }
1838
1839 /*
1840 * Magically conjured dummy values --- this is only ok for simulated hardware.
1841 *
1842 * A real driver which cannot determine real values noise MUST NOT
1843 * report any, especially not a magically conjured ones :-)
1844 */
1845 survey->filled = SURVEY_INFO_NOISE_DBM |
1846 SURVEY_INFO_TIME |
1847 SURVEY_INFO_TIME_BUSY;
1848 survey->noise = -92;
1849 survey->time =
1850 jiffies_to_msecs(hwsim->survey_data[idx].end -
1851 hwsim->survey_data[idx].start);
1852 /* report 12.5% of channel time is used */
1853 survey->time_busy = survey->time/8;
1854 mutex_unlock(&hwsim->mutex);
1855
1856 return 0;
1857 }
1858
1859 #ifdef CONFIG_NL80211_TESTMODE
1860 /*
1861 * This section contains example code for using netlink
1862 * attributes with the testmode command in nl80211.
1863 */
1864
1865 /* These enums need to be kept in sync with userspace */
1866 enum hwsim_testmode_attr {
1867 __HWSIM_TM_ATTR_INVALID = 0,
1868 HWSIM_TM_ATTR_CMD = 1,
1869 HWSIM_TM_ATTR_PS = 2,
1870
1871 /* keep last */
1872 __HWSIM_TM_ATTR_AFTER_LAST,
1873 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1874 };
1875
1876 enum hwsim_testmode_cmd {
1877 HWSIM_TM_CMD_SET_PS = 0,
1878 HWSIM_TM_CMD_GET_PS = 1,
1879 HWSIM_TM_CMD_STOP_QUEUES = 2,
1880 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1881 };
1882
1883 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1884 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1885 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1886 };
1887
1888 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1889 struct ieee80211_vif *vif,
1890 void *data, int len)
1891 {
1892 struct mac80211_hwsim_data *hwsim = hw->priv;
1893 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1894 struct sk_buff *skb;
1895 int err, ps;
1896
1897 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1898 hwsim_testmode_policy, NULL);
1899 if (err)
1900 return err;
1901
1902 if (!tb[HWSIM_TM_ATTR_CMD])
1903 return -EINVAL;
1904
1905 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1906 case HWSIM_TM_CMD_SET_PS:
1907 if (!tb[HWSIM_TM_ATTR_PS])
1908 return -EINVAL;
1909 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1910 return hwsim_fops_ps_write(hwsim, ps);
1911 case HWSIM_TM_CMD_GET_PS:
1912 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1913 nla_total_size(sizeof(u32)));
1914 if (!skb)
1915 return -ENOMEM;
1916 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1917 goto nla_put_failure;
1918 return cfg80211_testmode_reply(skb);
1919 case HWSIM_TM_CMD_STOP_QUEUES:
1920 ieee80211_stop_queues(hw);
1921 return 0;
1922 case HWSIM_TM_CMD_WAKE_QUEUES:
1923 ieee80211_wake_queues(hw);
1924 return 0;
1925 default:
1926 return -EOPNOTSUPP;
1927 }
1928
1929 nla_put_failure:
1930 kfree_skb(skb);
1931 return -ENOBUFS;
1932 }
1933 #endif
1934
1935 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1936 struct ieee80211_vif *vif,
1937 struct ieee80211_ampdu_params *params)
1938 {
1939 struct ieee80211_sta *sta = params->sta;
1940 enum ieee80211_ampdu_mlme_action action = params->action;
1941 u16 tid = params->tid;
1942
1943 switch (action) {
1944 case IEEE80211_AMPDU_TX_START:
1945 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1946 break;
1947 case IEEE80211_AMPDU_TX_STOP_CONT:
1948 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1949 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1950 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1951 break;
1952 case IEEE80211_AMPDU_TX_OPERATIONAL:
1953 break;
1954 case IEEE80211_AMPDU_RX_START:
1955 case IEEE80211_AMPDU_RX_STOP:
1956 break;
1957 default:
1958 return -EOPNOTSUPP;
1959 }
1960
1961 return 0;
1962 }
1963
1964 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1965 struct ieee80211_vif *vif,
1966 u32 queues, bool drop)
1967 {
1968 /* Not implemented, queues only on kernel side */
1969 }
1970
1971 static void hw_scan_work(struct work_struct *work)
1972 {
1973 struct mac80211_hwsim_data *hwsim =
1974 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1975 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1976 int dwell, i;
1977
1978 mutex_lock(&hwsim->mutex);
1979 if (hwsim->scan_chan_idx >= req->n_channels) {
1980 struct cfg80211_scan_info info = {
1981 .aborted = false,
1982 };
1983
1984 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1985 ieee80211_scan_completed(hwsim->hw, &info);
1986 hwsim->hw_scan_request = NULL;
1987 hwsim->hw_scan_vif = NULL;
1988 hwsim->tmp_chan = NULL;
1989 mutex_unlock(&hwsim->mutex);
1990 return;
1991 }
1992
1993 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1994 req->channels[hwsim->scan_chan_idx]->center_freq);
1995
1996 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1997 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1998 IEEE80211_CHAN_RADAR) ||
1999 !req->n_ssids) {
2000 dwell = 120;
2001 } else {
2002 dwell = 30;
2003 /* send probes */
2004 for (i = 0; i < req->n_ssids; i++) {
2005 struct sk_buff *probe;
2006 struct ieee80211_mgmt *mgmt;
2007
2008 probe = ieee80211_probereq_get(hwsim->hw,
2009 hwsim->scan_addr,
2010 req->ssids[i].ssid,
2011 req->ssids[i].ssid_len,
2012 req->ie_len);
2013 if (!probe)
2014 continue;
2015
2016 mgmt = (struct ieee80211_mgmt *) probe->data;
2017 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2018 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2019
2020 if (req->ie_len)
2021 skb_put_data(probe, req->ie, req->ie_len);
2022
2023 local_bh_disable();
2024 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2025 hwsim->tmp_chan);
2026 local_bh_enable();
2027 }
2028 }
2029 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2030 msecs_to_jiffies(dwell));
2031 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2032 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2033 hwsim->survey_data[hwsim->scan_chan_idx].end =
2034 jiffies + msecs_to_jiffies(dwell);
2035 hwsim->scan_chan_idx++;
2036 mutex_unlock(&hwsim->mutex);
2037 }
2038
2039 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2040 struct ieee80211_vif *vif,
2041 struct ieee80211_scan_request *hw_req)
2042 {
2043 struct mac80211_hwsim_data *hwsim = hw->priv;
2044 struct cfg80211_scan_request *req = &hw_req->req;
2045
2046 mutex_lock(&hwsim->mutex);
2047 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2048 mutex_unlock(&hwsim->mutex);
2049 return -EBUSY;
2050 }
2051 hwsim->hw_scan_request = req;
2052 hwsim->hw_scan_vif = vif;
2053 hwsim->scan_chan_idx = 0;
2054 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2055 get_random_mask_addr(hwsim->scan_addr,
2056 hw_req->req.mac_addr,
2057 hw_req->req.mac_addr_mask);
2058 else
2059 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2060 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2061 mutex_unlock(&hwsim->mutex);
2062
2063 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2064
2065 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2066
2067 return 0;
2068 }
2069
2070 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2071 struct ieee80211_vif *vif)
2072 {
2073 struct mac80211_hwsim_data *hwsim = hw->priv;
2074 struct cfg80211_scan_info info = {
2075 .aborted = true,
2076 };
2077
2078 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2079
2080 cancel_delayed_work_sync(&hwsim->hw_scan);
2081
2082 mutex_lock(&hwsim->mutex);
2083 ieee80211_scan_completed(hwsim->hw, &info);
2084 hwsim->tmp_chan = NULL;
2085 hwsim->hw_scan_request = NULL;
2086 hwsim->hw_scan_vif = NULL;
2087 mutex_unlock(&hwsim->mutex);
2088 }
2089
2090 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2091 struct ieee80211_vif *vif,
2092 const u8 *mac_addr)
2093 {
2094 struct mac80211_hwsim_data *hwsim = hw->priv;
2095
2096 mutex_lock(&hwsim->mutex);
2097
2098 if (hwsim->scanning) {
2099 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2100 goto out;
2101 }
2102
2103 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2104
2105 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2106 hwsim->scanning = true;
2107 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2108
2109 out:
2110 mutex_unlock(&hwsim->mutex);
2111 }
2112
2113 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2114 struct ieee80211_vif *vif)
2115 {
2116 struct mac80211_hwsim_data *hwsim = hw->priv;
2117
2118 mutex_lock(&hwsim->mutex);
2119
2120 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2121 hwsim->scanning = false;
2122 eth_zero_addr(hwsim->scan_addr);
2123
2124 mutex_unlock(&hwsim->mutex);
2125 }
2126
2127 static void hw_roc_start(struct work_struct *work)
2128 {
2129 struct mac80211_hwsim_data *hwsim =
2130 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2131
2132 mutex_lock(&hwsim->mutex);
2133
2134 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2135 hwsim->tmp_chan = hwsim->roc_chan;
2136 ieee80211_ready_on_channel(hwsim->hw);
2137
2138 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2139 msecs_to_jiffies(hwsim->roc_duration));
2140
2141 mutex_unlock(&hwsim->mutex);
2142 }
2143
2144 static void hw_roc_done(struct work_struct *work)
2145 {
2146 struct mac80211_hwsim_data *hwsim =
2147 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2148
2149 mutex_lock(&hwsim->mutex);
2150 ieee80211_remain_on_channel_expired(hwsim->hw);
2151 hwsim->tmp_chan = NULL;
2152 mutex_unlock(&hwsim->mutex);
2153
2154 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2155 }
2156
2157 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2158 struct ieee80211_vif *vif,
2159 struct ieee80211_channel *chan,
2160 int duration,
2161 enum ieee80211_roc_type type)
2162 {
2163 struct mac80211_hwsim_data *hwsim = hw->priv;
2164
2165 mutex_lock(&hwsim->mutex);
2166 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2167 mutex_unlock(&hwsim->mutex);
2168 return -EBUSY;
2169 }
2170
2171 hwsim->roc_chan = chan;
2172 hwsim->roc_duration = duration;
2173 mutex_unlock(&hwsim->mutex);
2174
2175 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2176 chan->center_freq, duration);
2177 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2178
2179 return 0;
2180 }
2181
2182 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2183 {
2184 struct mac80211_hwsim_data *hwsim = hw->priv;
2185
2186 cancel_delayed_work_sync(&hwsim->roc_start);
2187 cancel_delayed_work_sync(&hwsim->roc_done);
2188
2189 mutex_lock(&hwsim->mutex);
2190 hwsim->tmp_chan = NULL;
2191 mutex_unlock(&hwsim->mutex);
2192
2193 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2194
2195 return 0;
2196 }
2197
2198 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2199 struct ieee80211_chanctx_conf *ctx)
2200 {
2201 hwsim_set_chanctx_magic(ctx);
2202 wiphy_debug(hw->wiphy,
2203 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2204 ctx->def.chan->center_freq, ctx->def.width,
2205 ctx->def.center_freq1, ctx->def.center_freq2);
2206 return 0;
2207 }
2208
2209 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2210 struct ieee80211_chanctx_conf *ctx)
2211 {
2212 wiphy_debug(hw->wiphy,
2213 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2214 ctx->def.chan->center_freq, ctx->def.width,
2215 ctx->def.center_freq1, ctx->def.center_freq2);
2216 hwsim_check_chanctx_magic(ctx);
2217 hwsim_clear_chanctx_magic(ctx);
2218 }
2219
2220 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2221 struct ieee80211_chanctx_conf *ctx,
2222 u32 changed)
2223 {
2224 hwsim_check_chanctx_magic(ctx);
2225 wiphy_debug(hw->wiphy,
2226 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2227 ctx->def.chan->center_freq, ctx->def.width,
2228 ctx->def.center_freq1, ctx->def.center_freq2);
2229 }
2230
2231 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2232 struct ieee80211_vif *vif,
2233 struct ieee80211_chanctx_conf *ctx)
2234 {
2235 hwsim_check_magic(vif);
2236 hwsim_check_chanctx_magic(ctx);
2237
2238 return 0;
2239 }
2240
2241 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2242 struct ieee80211_vif *vif,
2243 struct ieee80211_chanctx_conf *ctx)
2244 {
2245 hwsim_check_magic(vif);
2246 hwsim_check_chanctx_magic(ctx);
2247 }
2248
2249 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2250 "tx_pkts_nic",
2251 "tx_bytes_nic",
2252 "rx_pkts_nic",
2253 "rx_bytes_nic",
2254 "d_tx_dropped",
2255 "d_tx_failed",
2256 "d_ps_mode",
2257 "d_group",
2258 };
2259
2260 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2261
2262 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2263 struct ieee80211_vif *vif,
2264 u32 sset, u8 *data)
2265 {
2266 if (sset == ETH_SS_STATS)
2267 memcpy(data, *mac80211_hwsim_gstrings_stats,
2268 sizeof(mac80211_hwsim_gstrings_stats));
2269 }
2270
2271 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2272 struct ieee80211_vif *vif, int sset)
2273 {
2274 if (sset == ETH_SS_STATS)
2275 return MAC80211_HWSIM_SSTATS_LEN;
2276 return 0;
2277 }
2278
2279 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2280 struct ieee80211_vif *vif,
2281 struct ethtool_stats *stats, u64 *data)
2282 {
2283 struct mac80211_hwsim_data *ar = hw->priv;
2284 int i = 0;
2285
2286 data[i++] = ar->tx_pkts;
2287 data[i++] = ar->tx_bytes;
2288 data[i++] = ar->rx_pkts;
2289 data[i++] = ar->rx_bytes;
2290 data[i++] = ar->tx_dropped;
2291 data[i++] = ar->tx_failed;
2292 data[i++] = ar->ps;
2293 data[i++] = ar->group;
2294
2295 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2296 }
2297
2298 #define HWSIM_COMMON_OPS \
2299 .tx = mac80211_hwsim_tx, \
2300 .start = mac80211_hwsim_start, \
2301 .stop = mac80211_hwsim_stop, \
2302 .add_interface = mac80211_hwsim_add_interface, \
2303 .change_interface = mac80211_hwsim_change_interface, \
2304 .remove_interface = mac80211_hwsim_remove_interface, \
2305 .config = mac80211_hwsim_config, \
2306 .configure_filter = mac80211_hwsim_configure_filter, \
2307 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2308 .sta_add = mac80211_hwsim_sta_add, \
2309 .sta_remove = mac80211_hwsim_sta_remove, \
2310 .sta_notify = mac80211_hwsim_sta_notify, \
2311 .set_tim = mac80211_hwsim_set_tim, \
2312 .conf_tx = mac80211_hwsim_conf_tx, \
2313 .get_survey = mac80211_hwsim_get_survey, \
2314 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2315 .ampdu_action = mac80211_hwsim_ampdu_action, \
2316 .flush = mac80211_hwsim_flush, \
2317 .get_tsf = mac80211_hwsim_get_tsf, \
2318 .set_tsf = mac80211_hwsim_set_tsf, \
2319 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2320 .get_et_stats = mac80211_hwsim_get_et_stats, \
2321 .get_et_strings = mac80211_hwsim_get_et_strings,
2322
2323 static const struct ieee80211_ops mac80211_hwsim_ops = {
2324 HWSIM_COMMON_OPS
2325 .sw_scan_start = mac80211_hwsim_sw_scan,
2326 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2327 };
2328
2329 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2330 HWSIM_COMMON_OPS
2331 .hw_scan = mac80211_hwsim_hw_scan,
2332 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2333 .sw_scan_start = NULL,
2334 .sw_scan_complete = NULL,
2335 .remain_on_channel = mac80211_hwsim_roc,
2336 .cancel_remain_on_channel = mac80211_hwsim_croc,
2337 .add_chanctx = mac80211_hwsim_add_chanctx,
2338 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2339 .change_chanctx = mac80211_hwsim_change_chanctx,
2340 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2341 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2342 };
2343
2344 struct hwsim_new_radio_params {
2345 unsigned int channels;
2346 const char *reg_alpha2;
2347 const struct ieee80211_regdomain *regd;
2348 bool reg_strict;
2349 bool p2p_device;
2350 bool use_chanctx;
2351 bool destroy_on_close;
2352 const char *hwname;
2353 bool no_vif;
2354 };
2355
2356 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2357 struct genl_info *info)
2358 {
2359 if (info)
2360 genl_notify(&hwsim_genl_family, mcast_skb, info,
2361 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2362 else
2363 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2364 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2365 }
2366
2367 static int append_radio_msg(struct sk_buff *skb, int id,
2368 struct hwsim_new_radio_params *param)
2369 {
2370 int ret;
2371
2372 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2373 if (ret < 0)
2374 return ret;
2375
2376 if (param->channels) {
2377 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2378 if (ret < 0)
2379 return ret;
2380 }
2381
2382 if (param->reg_alpha2) {
2383 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2384 param->reg_alpha2);
2385 if (ret < 0)
2386 return ret;
2387 }
2388
2389 if (param->regd) {
2390 int i;
2391
2392 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2393 if (hwsim_world_regdom_custom[i] != param->regd)
2394 continue;
2395
2396 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2397 if (ret < 0)
2398 return ret;
2399 break;
2400 }
2401 }
2402
2403 if (param->reg_strict) {
2404 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2405 if (ret < 0)
2406 return ret;
2407 }
2408
2409 if (param->p2p_device) {
2410 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2411 if (ret < 0)
2412 return ret;
2413 }
2414
2415 if (param->use_chanctx) {
2416 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2417 if (ret < 0)
2418 return ret;
2419 }
2420
2421 if (param->hwname) {
2422 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2423 strlen(param->hwname), param->hwname);
2424 if (ret < 0)
2425 return ret;
2426 }
2427
2428 return 0;
2429 }
2430
2431 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2432 struct hwsim_new_radio_params *param)
2433 {
2434 struct sk_buff *mcast_skb;
2435 void *data;
2436
2437 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2438 if (!mcast_skb)
2439 return;
2440
2441 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2442 HWSIM_CMD_NEW_RADIO);
2443 if (!data)
2444 goto out_err;
2445
2446 if (append_radio_msg(mcast_skb, id, param) < 0)
2447 goto out_err;
2448
2449 genlmsg_end(mcast_skb, data);
2450
2451 hwsim_mcast_config_msg(mcast_skb, info);
2452 return;
2453
2454 out_err:
2455 genlmsg_cancel(mcast_skb, data);
2456 nlmsg_free(mcast_skb);
2457 }
2458
2459 static int mac80211_hwsim_new_radio(struct genl_info *info,
2460 struct hwsim_new_radio_params *param)
2461 {
2462 int err;
2463 u8 addr[ETH_ALEN];
2464 struct mac80211_hwsim_data *data;
2465 struct ieee80211_hw *hw;
2466 enum nl80211_band band;
2467 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2468 struct net *net;
2469 int idx;
2470
2471 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2472 return -EINVAL;
2473
2474 spin_lock_bh(&hwsim_radio_lock);
2475 idx = hwsim_radio_idx++;
2476 spin_unlock_bh(&hwsim_radio_lock);
2477
2478 if (param->use_chanctx)
2479 ops = &mac80211_hwsim_mchan_ops;
2480 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2481 if (!hw) {
2482 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2483 err = -ENOMEM;
2484 goto failed;
2485 }
2486
2487 /* ieee80211_alloc_hw_nm may have used a default name */
2488 param->hwname = wiphy_name(hw->wiphy);
2489
2490 if (info)
2491 net = genl_info_net(info);
2492 else
2493 net = &init_net;
2494 wiphy_net_set(hw->wiphy, net);
2495
2496 data = hw->priv;
2497 data->hw = hw;
2498
2499 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2500 if (IS_ERR(data->dev)) {
2501 printk(KERN_DEBUG
2502 "mac80211_hwsim: device_create failed (%ld)\n",
2503 PTR_ERR(data->dev));
2504 err = -ENOMEM;
2505 goto failed_drvdata;
2506 }
2507 data->dev->driver = &mac80211_hwsim_driver.driver;
2508 err = device_bind_driver(data->dev);
2509 if (err != 0) {
2510 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2511 err);
2512 goto failed_bind;
2513 }
2514
2515 skb_queue_head_init(&data->pending);
2516
2517 SET_IEEE80211_DEV(hw, data->dev);
2518 eth_zero_addr(addr);
2519 addr[0] = 0x02;
2520 addr[3] = idx >> 8;
2521 addr[4] = idx;
2522 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2523 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2524 data->addresses[1].addr[0] |= 0x40;
2525 hw->wiphy->n_addresses = 2;
2526 hw->wiphy->addresses = data->addresses;
2527
2528 data->channels = param->channels;
2529 data->use_chanctx = param->use_chanctx;
2530 data->idx = idx;
2531 data->destroy_on_close = param->destroy_on_close;
2532 if (info)
2533 data->portid = info->snd_portid;
2534
2535 if (data->use_chanctx) {
2536 hw->wiphy->max_scan_ssids = 255;
2537 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2538 hw->wiphy->max_remain_on_channel_duration = 1000;
2539 hw->wiphy->iface_combinations = &data->if_combination;
2540 if (param->p2p_device)
2541 data->if_combination = hwsim_if_comb_p2p_dev[0];
2542 else
2543 data->if_combination = hwsim_if_comb[0];
2544 hw->wiphy->n_iface_combinations = 1;
2545 /* For channels > 1 DFS is not allowed */
2546 data->if_combination.radar_detect_widths = 0;
2547 data->if_combination.num_different_channels = data->channels;
2548 } else if (param->p2p_device) {
2549 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2550 hw->wiphy->n_iface_combinations =
2551 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2552 } else {
2553 hw->wiphy->iface_combinations = hwsim_if_comb;
2554 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2555 }
2556
2557 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2558 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2559 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2560
2561 hw->queues = 5;
2562 hw->offchannel_tx_hw_queue = 4;
2563 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2564 BIT(NL80211_IFTYPE_AP) |
2565 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2566 BIT(NL80211_IFTYPE_P2P_GO) |
2567 BIT(NL80211_IFTYPE_ADHOC) |
2568 BIT(NL80211_IFTYPE_MESH_POINT);
2569
2570 if (param->p2p_device)
2571 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2572
2573 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2574 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2575 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2576 ieee80211_hw_set(hw, QUEUE_CONTROL);
2577 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2578 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2579 ieee80211_hw_set(hw, MFP_CAPABLE);
2580 ieee80211_hw_set(hw, SIGNAL_DBM);
2581 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2582 if (rctbl)
2583 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2584
2585 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2586 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2587 WIPHY_FLAG_AP_UAPSD |
2588 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2589 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2590 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2591 NL80211_FEATURE_STATIC_SMPS |
2592 NL80211_FEATURE_DYNAMIC_SMPS |
2593 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2594 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2595
2596 /* ask mac80211 to reserve space for magic */
2597 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2598 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2599 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2600
2601 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2602 sizeof(hwsim_channels_2ghz));
2603 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2604 sizeof(hwsim_channels_5ghz));
2605 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2606
2607 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2608 struct ieee80211_supported_band *sband = &data->bands[band];
2609 switch (band) {
2610 case NL80211_BAND_2GHZ:
2611 sband->channels = data->channels_2ghz;
2612 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2613 sband->bitrates = data->rates;
2614 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2615 break;
2616 case NL80211_BAND_5GHZ:
2617 sband->channels = data->channels_5ghz;
2618 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2619 sband->bitrates = data->rates + 4;
2620 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2621
2622 sband->vht_cap.vht_supported = true;
2623 sband->vht_cap.cap =
2624 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2625 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2626 IEEE80211_VHT_CAP_RXLDPC |
2627 IEEE80211_VHT_CAP_SHORT_GI_80 |
2628 IEEE80211_VHT_CAP_SHORT_GI_160 |
2629 IEEE80211_VHT_CAP_TXSTBC |
2630 IEEE80211_VHT_CAP_RXSTBC_1 |
2631 IEEE80211_VHT_CAP_RXSTBC_2 |
2632 IEEE80211_VHT_CAP_RXSTBC_3 |
2633 IEEE80211_VHT_CAP_RXSTBC_4 |
2634 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2635 sband->vht_cap.vht_mcs.rx_mcs_map =
2636 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2637 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2638 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2639 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2640 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2641 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2642 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2643 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2644 sband->vht_cap.vht_mcs.tx_mcs_map =
2645 sband->vht_cap.vht_mcs.rx_mcs_map;
2646 break;
2647 default:
2648 continue;
2649 }
2650
2651 sband->ht_cap.ht_supported = true;
2652 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2653 IEEE80211_HT_CAP_GRN_FLD |
2654 IEEE80211_HT_CAP_SGI_20 |
2655 IEEE80211_HT_CAP_SGI_40 |
2656 IEEE80211_HT_CAP_DSSSCCK40;
2657 sband->ht_cap.ampdu_factor = 0x3;
2658 sband->ht_cap.ampdu_density = 0x6;
2659 memset(&sband->ht_cap.mcs, 0,
2660 sizeof(sband->ht_cap.mcs));
2661 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2662 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2663 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2664
2665 hw->wiphy->bands[band] = sband;
2666 }
2667
2668 /* By default all radios belong to the first group */
2669 data->group = 1;
2670 mutex_init(&data->mutex);
2671
2672 data->netgroup = hwsim_net_get_netgroup(net);
2673
2674 /* Enable frame retransmissions for lossy channels */
2675 hw->max_rates = 4;
2676 hw->max_rate_tries = 11;
2677
2678 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2679 hw->wiphy->n_vendor_commands =
2680 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2681 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2682 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2683
2684 if (param->reg_strict)
2685 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2686 if (param->regd) {
2687 data->regd = param->regd;
2688 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2689 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2690 /* give the regulatory workqueue a chance to run */
2691 schedule_timeout_interruptible(1);
2692 }
2693
2694 if (param->no_vif)
2695 ieee80211_hw_set(hw, NO_AUTO_VIF);
2696
2697 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2698
2699 err = ieee80211_register_hw(hw);
2700 if (err < 0) {
2701 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2702 err);
2703 goto failed_hw;
2704 }
2705
2706 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2707
2708 if (param->reg_alpha2) {
2709 data->alpha2[0] = param->reg_alpha2[0];
2710 data->alpha2[1] = param->reg_alpha2[1];
2711 regulatory_hint(hw->wiphy, param->reg_alpha2);
2712 }
2713
2714 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2715 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2716 debugfs_create_file("group", 0666, data->debugfs, data,
2717 &hwsim_fops_group);
2718 if (!data->use_chanctx)
2719 debugfs_create_file("dfs_simulate_radar", 0222,
2720 data->debugfs,
2721 data, &hwsim_simulate_radar);
2722
2723 tasklet_hrtimer_init(&data->beacon_timer,
2724 mac80211_hwsim_beacon,
2725 CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2726
2727 spin_lock_bh(&hwsim_radio_lock);
2728 list_add_tail(&data->list, &hwsim_radios);
2729 spin_unlock_bh(&hwsim_radio_lock);
2730
2731 if (idx > 0)
2732 hwsim_mcast_new_radio(idx, info, param);
2733
2734 return idx;
2735
2736 failed_hw:
2737 device_release_driver(data->dev);
2738 failed_bind:
2739 device_unregister(data->dev);
2740 failed_drvdata:
2741 ieee80211_free_hw(hw);
2742 failed:
2743 return err;
2744 }
2745
2746 static void hwsim_mcast_del_radio(int id, const char *hwname,
2747 struct genl_info *info)
2748 {
2749 struct sk_buff *skb;
2750 void *data;
2751 int ret;
2752
2753 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2754 if (!skb)
2755 return;
2756
2757 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2758 HWSIM_CMD_DEL_RADIO);
2759 if (!data)
2760 goto error;
2761
2762 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2763 if (ret < 0)
2764 goto error;
2765
2766 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2767 hwname);
2768 if (ret < 0)
2769 goto error;
2770
2771 genlmsg_end(skb, data);
2772
2773 hwsim_mcast_config_msg(skb, info);
2774
2775 return;
2776
2777 error:
2778 nlmsg_free(skb);
2779 }
2780
2781 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2782 const char *hwname,
2783 struct genl_info *info)
2784 {
2785 hwsim_mcast_del_radio(data->idx, hwname, info);
2786 debugfs_remove_recursive(data->debugfs);
2787 ieee80211_unregister_hw(data->hw);
2788 device_release_driver(data->dev);
2789 device_unregister(data->dev);
2790 ieee80211_free_hw(data->hw);
2791 }
2792
2793 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2794 struct mac80211_hwsim_data *data,
2795 u32 portid, u32 seq,
2796 struct netlink_callback *cb, int flags)
2797 {
2798 void *hdr;
2799 struct hwsim_new_radio_params param = { };
2800 int res = -EMSGSIZE;
2801
2802 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2803 HWSIM_CMD_GET_RADIO);
2804 if (!hdr)
2805 return -EMSGSIZE;
2806
2807 if (cb)
2808 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2809
2810 if (data->alpha2[0] && data->alpha2[1])
2811 param.reg_alpha2 = data->alpha2;
2812
2813 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2814 REGULATORY_STRICT_REG);
2815 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2816 BIT(NL80211_IFTYPE_P2P_DEVICE));
2817 param.use_chanctx = data->use_chanctx;
2818 param.regd = data->regd;
2819 param.channels = data->channels;
2820 param.hwname = wiphy_name(data->hw->wiphy);
2821
2822 res = append_radio_msg(skb, data->idx, &param);
2823 if (res < 0)
2824 goto out_err;
2825
2826 genlmsg_end(skb, hdr);
2827 return 0;
2828
2829 out_err:
2830 genlmsg_cancel(skb, hdr);
2831 return res;
2832 }
2833
2834 static void mac80211_hwsim_free(void)
2835 {
2836 struct mac80211_hwsim_data *data;
2837
2838 spin_lock_bh(&hwsim_radio_lock);
2839 while ((data = list_first_entry_or_null(&hwsim_radios,
2840 struct mac80211_hwsim_data,
2841 list))) {
2842 list_del(&data->list);
2843 spin_unlock_bh(&hwsim_radio_lock);
2844 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2845 NULL);
2846 spin_lock_bh(&hwsim_radio_lock);
2847 }
2848 spin_unlock_bh(&hwsim_radio_lock);
2849 class_destroy(hwsim_class);
2850 }
2851
2852 static const struct net_device_ops hwsim_netdev_ops = {
2853 .ndo_start_xmit = hwsim_mon_xmit,
2854 .ndo_set_mac_address = eth_mac_addr,
2855 .ndo_validate_addr = eth_validate_addr,
2856 };
2857
2858 static void hwsim_mon_setup(struct net_device *dev)
2859 {
2860 dev->netdev_ops = &hwsim_netdev_ops;
2861 dev->needs_free_netdev = true;
2862 ether_setup(dev);
2863 dev->priv_flags |= IFF_NO_QUEUE;
2864 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2865 eth_zero_addr(dev->dev_addr);
2866 dev->dev_addr[0] = 0x12;
2867 }
2868
2869 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2870 {
2871 struct mac80211_hwsim_data *data;
2872 bool _found = false;
2873
2874 spin_lock_bh(&hwsim_radio_lock);
2875 list_for_each_entry(data, &hwsim_radios, list) {
2876 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2877 _found = true;
2878 break;
2879 }
2880 }
2881 spin_unlock_bh(&hwsim_radio_lock);
2882
2883 if (!_found)
2884 return NULL;
2885
2886 return data;
2887 }
2888
2889 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2890 {
2891 struct mac80211_hwsim_data *data;
2892
2893 hwsim_net_set_wmediumd(net, portid);
2894
2895 spin_lock_bh(&hwsim_radio_lock);
2896 list_for_each_entry(data, &hwsim_radios, list) {
2897 if (data->netgroup == hwsim_net_get_netgroup(net))
2898 data->wmediumd = portid;
2899 }
2900 spin_unlock_bh(&hwsim_radio_lock);
2901 }
2902
2903 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2904 struct genl_info *info)
2905 {
2906
2907 struct ieee80211_hdr *hdr;
2908 struct mac80211_hwsim_data *data2;
2909 struct ieee80211_tx_info *txi;
2910 struct hwsim_tx_rate *tx_attempts;
2911 u64 ret_skb_cookie;
2912 struct sk_buff *skb, *tmp;
2913 const u8 *src;
2914 unsigned int hwsim_flags;
2915 int i;
2916 bool found = false;
2917
2918 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2919 !info->attrs[HWSIM_ATTR_FLAGS] ||
2920 !info->attrs[HWSIM_ATTR_COOKIE] ||
2921 !info->attrs[HWSIM_ATTR_SIGNAL] ||
2922 !info->attrs[HWSIM_ATTR_TX_INFO])
2923 goto out;
2924
2925 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2926 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2927 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2928
2929 data2 = get_hwsim_data_ref_from_addr(src);
2930 if (!data2)
2931 goto out;
2932
2933 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2934 goto out;
2935
2936 if (info->snd_portid != data2->wmediumd)
2937 goto out;
2938
2939 /* look for the skb matching the cookie passed back from user */
2940 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2941 u64 skb_cookie;
2942
2943 txi = IEEE80211_SKB_CB(skb);
2944 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2945
2946 if (skb_cookie == ret_skb_cookie) {
2947 skb_unlink(skb, &data2->pending);
2948 found = true;
2949 break;
2950 }
2951 }
2952
2953 /* not found */
2954 if (!found)
2955 goto out;
2956
2957 /* Tx info received because the frame was broadcasted on user space,
2958 so we get all the necessary info: tx attempts and skb control buff */
2959
2960 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2961 info->attrs[HWSIM_ATTR_TX_INFO]);
2962
2963 /* now send back TX status */
2964 txi = IEEE80211_SKB_CB(skb);
2965
2966 ieee80211_tx_info_clear_status(txi);
2967
2968 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2969 txi->status.rates[i].idx = tx_attempts[i].idx;
2970 txi->status.rates[i].count = tx_attempts[i].count;
2971 /*txi->status.rates[i].flags = 0;*/
2972 }
2973
2974 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2975
2976 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2977 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2978 if (skb->len >= 16) {
2979 hdr = (struct ieee80211_hdr *) skb->data;
2980 mac80211_hwsim_monitor_ack(data2->channel,
2981 hdr->addr2);
2982 }
2983 txi->flags |= IEEE80211_TX_STAT_ACK;
2984 }
2985 ieee80211_tx_status_irqsafe(data2->hw, skb);
2986 return 0;
2987 out:
2988 return -EINVAL;
2989
2990 }
2991
2992 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2993 struct genl_info *info)
2994 {
2995 struct mac80211_hwsim_data *data2;
2996 struct ieee80211_rx_status rx_status;
2997 const u8 *dst;
2998 int frame_data_len;
2999 void *frame_data;
3000 struct sk_buff *skb = NULL;
3001
3002 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3003 !info->attrs[HWSIM_ATTR_FRAME] ||
3004 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3005 !info->attrs[HWSIM_ATTR_SIGNAL])
3006 goto out;
3007
3008 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3009 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3010 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3011
3012 /* Allocate new skb here */
3013 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3014 if (skb == NULL)
3015 goto err;
3016
3017 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3018 goto err;
3019
3020 /* Copy the data */
3021 skb_put_data(skb, frame_data, frame_data_len);
3022
3023 data2 = get_hwsim_data_ref_from_addr(dst);
3024 if (!data2)
3025 goto out;
3026
3027 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3028 goto out;
3029
3030 if (info->snd_portid != data2->wmediumd)
3031 goto out;
3032
3033 /* check if radio is configured properly */
3034
3035 if (data2->idle || !data2->started)
3036 goto out;
3037
3038 /* A frame is received from user space */
3039 memset(&rx_status, 0, sizeof(rx_status));
3040 if (info->attrs[HWSIM_ATTR_FREQ]) {
3041 /* throw away off-channel packets, but allow both the temporary
3042 * ("hw" scan/remain-on-channel) and regular channel, since the
3043 * internal datapath also allows this
3044 */
3045 mutex_lock(&data2->mutex);
3046 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3047
3048 if (rx_status.freq != data2->channel->center_freq &&
3049 (!data2->tmp_chan ||
3050 rx_status.freq != data2->tmp_chan->center_freq)) {
3051 mutex_unlock(&data2->mutex);
3052 goto out;
3053 }
3054 mutex_unlock(&data2->mutex);
3055 } else {
3056 rx_status.freq = data2->channel->center_freq;
3057 }
3058
3059 rx_status.band = data2->channel->band;
3060 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3061 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3062
3063 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3064 data2->rx_pkts++;
3065 data2->rx_bytes += skb->len;
3066 ieee80211_rx_irqsafe(data2->hw, skb);
3067
3068 return 0;
3069 err:
3070 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3071 out:
3072 dev_kfree_skb(skb);
3073 return -EINVAL;
3074 }
3075
3076 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3077 struct genl_info *info)
3078 {
3079 struct net *net = genl_info_net(info);
3080 struct mac80211_hwsim_data *data;
3081 int chans = 1;
3082
3083 spin_lock_bh(&hwsim_radio_lock);
3084 list_for_each_entry(data, &hwsim_radios, list)
3085 chans = max(chans, data->channels);
3086 spin_unlock_bh(&hwsim_radio_lock);
3087
3088 /* In the future we should revise the userspace API and allow it
3089 * to set a flag that it does support multi-channel, then we can
3090 * let this pass conditionally on the flag.
3091 * For current userspace, prohibit it since it won't work right.
3092 */
3093 if (chans > 1)
3094 return -EOPNOTSUPP;
3095
3096 if (hwsim_net_get_wmediumd(net))
3097 return -EBUSY;
3098
3099 hwsim_register_wmediumd(net, info->snd_portid);
3100
3101 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3102 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3103
3104 return 0;
3105 }
3106
3107 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3108 {
3109 struct hwsim_new_radio_params param = { 0 };
3110 const char *hwname = NULL;
3111 int ret;
3112
3113 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3114 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3115 param.channels = channels;
3116 param.destroy_on_close =
3117 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3118
3119 if (info->attrs[HWSIM_ATTR_CHANNELS])
3120 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3121
3122 if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3123 GENL_SET_ERR_MSG(info, "too many channels specified");
3124 return -EINVAL;
3125 }
3126
3127 if (info->attrs[HWSIM_ATTR_NO_VIF])
3128 param.no_vif = true;
3129
3130 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3131 hwname = kasprintf(GFP_KERNEL, "%.*s",
3132 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3133 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3134 if (!hwname)
3135 return -ENOMEM;
3136 param.hwname = hwname;
3137 }
3138
3139 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3140 param.use_chanctx = true;
3141 else
3142 param.use_chanctx = (param.channels > 1);
3143
3144 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3145 param.reg_alpha2 =
3146 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3147
3148 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3149 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3150
3151 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3152 return -EINVAL;
3153 param.regd = hwsim_world_regdom_custom[idx];
3154 }
3155
3156 ret = mac80211_hwsim_new_radio(info, &param);
3157 kfree(hwname);
3158 return ret;
3159 }
3160
3161 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3162 {
3163 struct mac80211_hwsim_data *data;
3164 s64 idx = -1;
3165 const char *hwname = NULL;
3166
3167 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3168 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3169 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3170 hwname = kasprintf(GFP_KERNEL, "%.*s",
3171 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3172 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3173 if (!hwname)
3174 return -ENOMEM;
3175 } else
3176 return -EINVAL;
3177
3178 spin_lock_bh(&hwsim_radio_lock);
3179 list_for_each_entry(data, &hwsim_radios, list) {
3180 if (idx >= 0) {
3181 if (data->idx != idx)
3182 continue;
3183 } else {
3184 if (!hwname ||
3185 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3186 continue;
3187 }
3188
3189 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3190 continue;
3191
3192 list_del(&data->list);
3193 spin_unlock_bh(&hwsim_radio_lock);
3194 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3195 info);
3196 kfree(hwname);
3197 return 0;
3198 }
3199 spin_unlock_bh(&hwsim_radio_lock);
3200
3201 kfree(hwname);
3202 return -ENODEV;
3203 }
3204
3205 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3206 {
3207 struct mac80211_hwsim_data *data;
3208 struct sk_buff *skb;
3209 int idx, res = -ENODEV;
3210
3211 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3212 return -EINVAL;
3213 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3214
3215 spin_lock_bh(&hwsim_radio_lock);
3216 list_for_each_entry(data, &hwsim_radios, list) {
3217 if (data->idx != idx)
3218 continue;
3219
3220 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3221 continue;
3222
3223 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3224 if (!skb) {
3225 res = -ENOMEM;
3226 goto out_err;
3227 }
3228
3229 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3230 info->snd_seq, NULL, 0);
3231 if (res < 0) {
3232 nlmsg_free(skb);
3233 goto out_err;
3234 }
3235
3236 genlmsg_reply(skb, info);
3237 break;
3238 }
3239
3240 out_err:
3241 spin_unlock_bh(&hwsim_radio_lock);
3242
3243 return res;
3244 }
3245
3246 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3247 struct netlink_callback *cb)
3248 {
3249 int idx = cb->args[0];
3250 struct mac80211_hwsim_data *data = NULL;
3251 int res;
3252
3253 spin_lock_bh(&hwsim_radio_lock);
3254
3255 if (idx == hwsim_radio_idx)
3256 goto done;
3257
3258 list_for_each_entry(data, &hwsim_radios, list) {
3259 if (data->idx < idx)
3260 continue;
3261
3262 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3263 continue;
3264
3265 res = mac80211_hwsim_get_radio(skb, data,
3266 NETLINK_CB(cb->skb).portid,
3267 cb->nlh->nlmsg_seq, cb,
3268 NLM_F_MULTI);
3269 if (res < 0)
3270 break;
3271
3272 idx = data->idx + 1;
3273 }
3274
3275 cb->args[0] = idx;
3276
3277 done:
3278 spin_unlock_bh(&hwsim_radio_lock);
3279 return skb->len;
3280 }
3281
3282 /* Generic Netlink operations array */
3283 static const struct genl_ops hwsim_ops[] = {
3284 {
3285 .cmd = HWSIM_CMD_REGISTER,
3286 .policy = hwsim_genl_policy,
3287 .doit = hwsim_register_received_nl,
3288 .flags = GENL_UNS_ADMIN_PERM,
3289 },
3290 {
3291 .cmd = HWSIM_CMD_FRAME,
3292 .policy = hwsim_genl_policy,
3293 .doit = hwsim_cloned_frame_received_nl,
3294 },
3295 {
3296 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3297 .policy = hwsim_genl_policy,
3298 .doit = hwsim_tx_info_frame_received_nl,
3299 },
3300 {
3301 .cmd = HWSIM_CMD_NEW_RADIO,
3302 .policy = hwsim_genl_policy,
3303 .doit = hwsim_new_radio_nl,
3304 .flags = GENL_UNS_ADMIN_PERM,
3305 },
3306 {
3307 .cmd = HWSIM_CMD_DEL_RADIO,
3308 .policy = hwsim_genl_policy,
3309 .doit = hwsim_del_radio_nl,
3310 .flags = GENL_UNS_ADMIN_PERM,
3311 },
3312 {
3313 .cmd = HWSIM_CMD_GET_RADIO,
3314 .policy = hwsim_genl_policy,
3315 .doit = hwsim_get_radio_nl,
3316 .dumpit = hwsim_dump_radio_nl,
3317 },
3318 };
3319
3320 static struct genl_family hwsim_genl_family __ro_after_init = {
3321 .name = "MAC80211_HWSIM",
3322 .version = 1,
3323 .maxattr = HWSIM_ATTR_MAX,
3324 .netnsok = true,
3325 .module = THIS_MODULE,
3326 .ops = hwsim_ops,
3327 .n_ops = ARRAY_SIZE(hwsim_ops),
3328 .mcgrps = hwsim_mcgrps,
3329 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3330 };
3331
3332 static void destroy_radio(struct work_struct *work)
3333 {
3334 struct mac80211_hwsim_data *data =
3335 container_of(work, struct mac80211_hwsim_data, destroy_work);
3336
3337 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3338 }
3339
3340 static void remove_user_radios(u32 portid)
3341 {
3342 struct mac80211_hwsim_data *entry, *tmp;
3343
3344 spin_lock_bh(&hwsim_radio_lock);
3345 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3346 if (entry->destroy_on_close && entry->portid == portid) {
3347 list_del(&entry->list);
3348 INIT_WORK(&entry->destroy_work, destroy_radio);
3349 schedule_work(&entry->destroy_work);
3350 }
3351 }
3352 spin_unlock_bh(&hwsim_radio_lock);
3353 }
3354
3355 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3356 unsigned long state,
3357 void *_notify)
3358 {
3359 struct netlink_notify *notify = _notify;
3360
3361 if (state != NETLINK_URELEASE)
3362 return NOTIFY_DONE;
3363
3364 remove_user_radios(notify->portid);
3365
3366 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3367 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3368 " socket, switching to perfect channel medium\n");
3369 hwsim_register_wmediumd(notify->net, 0);
3370 }
3371 return NOTIFY_DONE;
3372
3373 }
3374
3375 static struct notifier_block hwsim_netlink_notifier = {
3376 .notifier_call = mac80211_hwsim_netlink_notify,
3377 };
3378
3379 static int __init hwsim_init_netlink(void)
3380 {
3381 int rc;
3382
3383 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3384
3385 rc = genl_register_family(&hwsim_genl_family);
3386 if (rc)
3387 goto failure;
3388
3389 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3390 if (rc) {
3391 genl_unregister_family(&hwsim_genl_family);
3392 goto failure;
3393 }
3394
3395 return 0;
3396
3397 failure:
3398 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3399 return -EINVAL;
3400 }
3401
3402 static __net_init int hwsim_init_net(struct net *net)
3403 {
3404 hwsim_net_set_netgroup(net);
3405
3406 return 0;
3407 }
3408
3409 static void __net_exit hwsim_exit_net(struct net *net)
3410 {
3411 struct mac80211_hwsim_data *data, *tmp;
3412
3413 spin_lock_bh(&hwsim_radio_lock);
3414 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3415 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3416 continue;
3417
3418 /* Radios created in init_net are returned to init_net. */
3419 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3420 continue;
3421
3422 list_del(&data->list);
3423 INIT_WORK(&data->destroy_work, destroy_radio);
3424 schedule_work(&data->destroy_work);
3425 }
3426 spin_unlock_bh(&hwsim_radio_lock);
3427 }
3428
3429 static struct pernet_operations hwsim_net_ops = {
3430 .init = hwsim_init_net,
3431 .exit = hwsim_exit_net,
3432 .id = &hwsim_net_id,
3433 .size = sizeof(struct hwsim_net),
3434 };
3435
3436 static void hwsim_exit_netlink(void)
3437 {
3438 /* unregister the notifier */
3439 netlink_unregister_notifier(&hwsim_netlink_notifier);
3440 /* unregister the family */
3441 genl_unregister_family(&hwsim_genl_family);
3442 }
3443
3444 static int __init init_mac80211_hwsim(void)
3445 {
3446 int i, err;
3447
3448 if (radios < 0 || radios > 100)
3449 return -EINVAL;
3450
3451 if (channels < 1)
3452 return -EINVAL;
3453
3454 spin_lock_init(&hwsim_radio_lock);
3455
3456 err = register_pernet_device(&hwsim_net_ops);
3457 if (err)
3458 return err;
3459
3460 err = platform_driver_register(&mac80211_hwsim_driver);
3461 if (err)
3462 goto out_unregister_pernet;
3463
3464 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3465 if (IS_ERR(hwsim_class)) {
3466 err = PTR_ERR(hwsim_class);
3467 goto out_unregister_driver;
3468 }
3469
3470 err = hwsim_init_netlink();
3471 if (err < 0)
3472 goto out_unregister_driver;
3473
3474 for (i = 0; i < radios; i++) {
3475 struct hwsim_new_radio_params param = { 0 };
3476
3477 param.channels = channels;
3478
3479 switch (regtest) {
3480 case HWSIM_REGTEST_DIFF_COUNTRY:
3481 if (i < ARRAY_SIZE(hwsim_alpha2s))
3482 param.reg_alpha2 = hwsim_alpha2s[i];
3483 break;
3484 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3485 if (!i)
3486 param.reg_alpha2 = hwsim_alpha2s[0];
3487 break;
3488 case HWSIM_REGTEST_STRICT_ALL:
3489 param.reg_strict = true;
3490 case HWSIM_REGTEST_DRIVER_REG_ALL:
3491 param.reg_alpha2 = hwsim_alpha2s[0];
3492 break;
3493 case HWSIM_REGTEST_WORLD_ROAM:
3494 if (i == 0)
3495 param.regd = &hwsim_world_regdom_custom_01;
3496 break;
3497 case HWSIM_REGTEST_CUSTOM_WORLD:
3498 param.regd = &hwsim_world_regdom_custom_01;
3499 break;
3500 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3501 if (i == 0)
3502 param.regd = &hwsim_world_regdom_custom_01;
3503 else if (i == 1)
3504 param.regd = &hwsim_world_regdom_custom_02;
3505 break;
3506 case HWSIM_REGTEST_STRICT_FOLLOW:
3507 if (i == 0) {
3508 param.reg_strict = true;
3509 param.reg_alpha2 = hwsim_alpha2s[0];
3510 }
3511 break;
3512 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3513 if (i == 0) {
3514 param.reg_strict = true;
3515 param.reg_alpha2 = hwsim_alpha2s[0];
3516 } else if (i == 1) {
3517 param.reg_alpha2 = hwsim_alpha2s[1];
3518 }
3519 break;
3520 case HWSIM_REGTEST_ALL:
3521 switch (i) {
3522 case 0:
3523 param.regd = &hwsim_world_regdom_custom_01;
3524 break;
3525 case 1:
3526 param.regd = &hwsim_world_regdom_custom_02;
3527 break;
3528 case 2:
3529 param.reg_alpha2 = hwsim_alpha2s[0];
3530 break;
3531 case 3:
3532 param.reg_alpha2 = hwsim_alpha2s[1];
3533 break;
3534 case 4:
3535 param.reg_strict = true;
3536 param.reg_alpha2 = hwsim_alpha2s[2];
3537 break;
3538 }
3539 break;
3540 default:
3541 break;
3542 }
3543
3544 param.p2p_device = support_p2p_device;
3545 param.use_chanctx = channels > 1;
3546
3547 err = mac80211_hwsim_new_radio(NULL, &param);
3548 if (err < 0)
3549 goto out_free_radios;
3550 }
3551
3552 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3553 hwsim_mon_setup);
3554 if (hwsim_mon == NULL) {
3555 err = -ENOMEM;
3556 goto out_free_radios;
3557 }
3558
3559 rtnl_lock();
3560 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3561 if (err < 0) {
3562 rtnl_unlock();
3563 goto out_free_radios;
3564 }
3565
3566 err = register_netdevice(hwsim_mon);
3567 if (err < 0) {
3568 rtnl_unlock();
3569 goto out_free_mon;
3570 }
3571 rtnl_unlock();
3572
3573 return 0;
3574
3575 out_free_mon:
3576 free_netdev(hwsim_mon);
3577 out_free_radios:
3578 mac80211_hwsim_free();
3579 out_unregister_driver:
3580 platform_driver_unregister(&mac80211_hwsim_driver);
3581 out_unregister_pernet:
3582 unregister_pernet_device(&hwsim_net_ops);
3583 return err;
3584 }
3585 module_init(init_mac80211_hwsim);
3586
3587 static void __exit exit_mac80211_hwsim(void)
3588 {
3589 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3590
3591 hwsim_exit_netlink();
3592
3593 mac80211_hwsim_free();
3594 unregister_netdev(hwsim_mon);
3595 platform_driver_unregister(&mac80211_hwsim_driver);
3596 unregister_pernet_device(&hwsim_net_ops);
3597 }
3598 module_exit(exit_mac80211_hwsim);