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[mirror_ubuntu-artful-kernel.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 = (void *) 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 = (void *) 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 = (struct hwsim_radiotap_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 = (struct hwsim_radiotap_ack_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 = (struct ieee80211_hdr *) 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 = (void *)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 txi->rate_driver_data[0] = channel;
1366
1367 if (skb->len >= 24 + 8 &&
1368 ieee80211_is_probe_resp(hdr->frame_control)) {
1369 /* fake header transmission time */
1370 struct ieee80211_mgmt *mgmt;
1371 struct ieee80211_rate *txrate;
1372 u64 ts;
1373
1374 mgmt = (struct ieee80211_mgmt *)skb->data;
1375 txrate = ieee80211_get_tx_rate(hw, txi);
1376 ts = mac80211_hwsim_get_tsf_raw();
1377 mgmt->u.probe_resp.timestamp =
1378 cpu_to_le64(ts + data->tsf_offset +
1379 24 * 8 * 10 / txrate->bitrate);
1380 }
1381
1382 mac80211_hwsim_monitor_rx(hw, skb, channel);
1383
1384 /* wmediumd mode check */
1385 _portid = ACCESS_ONCE(data->wmediumd);
1386
1387 if (_portid)
1388 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1389
1390 /* NO wmediumd detected, perfect medium simulation */
1391 data->tx_pkts++;
1392 data->tx_bytes += skb->len;
1393 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1394
1395 if (ack && skb->len >= 16)
1396 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1397
1398 ieee80211_tx_info_clear_status(txi);
1399
1400 /* frame was transmitted at most favorable rate at first attempt */
1401 txi->control.rates[0].count = 1;
1402 txi->control.rates[1].idx = -1;
1403
1404 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1405 txi->flags |= IEEE80211_TX_STAT_ACK;
1406 ieee80211_tx_status_irqsafe(hw, skb);
1407 }
1408
1409
1410 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1411 {
1412 struct mac80211_hwsim_data *data = hw->priv;
1413 wiphy_debug(hw->wiphy, "%s\n", __func__);
1414 data->started = true;
1415 return 0;
1416 }
1417
1418
1419 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1420 {
1421 struct mac80211_hwsim_data *data = hw->priv;
1422 data->started = false;
1423 tasklet_hrtimer_cancel(&data->beacon_timer);
1424 wiphy_debug(hw->wiphy, "%s\n", __func__);
1425 }
1426
1427
1428 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1429 struct ieee80211_vif *vif)
1430 {
1431 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1432 __func__, ieee80211_vif_type_p2p(vif),
1433 vif->addr);
1434 hwsim_set_magic(vif);
1435
1436 vif->cab_queue = 0;
1437 vif->hw_queue[IEEE80211_AC_VO] = 0;
1438 vif->hw_queue[IEEE80211_AC_VI] = 1;
1439 vif->hw_queue[IEEE80211_AC_BE] = 2;
1440 vif->hw_queue[IEEE80211_AC_BK] = 3;
1441
1442 return 0;
1443 }
1444
1445
1446 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1447 struct ieee80211_vif *vif,
1448 enum nl80211_iftype newtype,
1449 bool newp2p)
1450 {
1451 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1452 wiphy_debug(hw->wiphy,
1453 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1454 __func__, ieee80211_vif_type_p2p(vif),
1455 newtype, vif->addr);
1456 hwsim_check_magic(vif);
1457
1458 /*
1459 * interface may change from non-AP to AP in
1460 * which case this needs to be set up again
1461 */
1462 vif->cab_queue = 0;
1463
1464 return 0;
1465 }
1466
1467 static void mac80211_hwsim_remove_interface(
1468 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1469 {
1470 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1471 __func__, ieee80211_vif_type_p2p(vif),
1472 vif->addr);
1473 hwsim_check_magic(vif);
1474 hwsim_clear_magic(vif);
1475 }
1476
1477 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1478 struct sk_buff *skb,
1479 struct ieee80211_channel *chan)
1480 {
1481 struct mac80211_hwsim_data *data = hw->priv;
1482 u32 _pid = ACCESS_ONCE(data->wmediumd);
1483
1484 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1485 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1486 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1487 txi->control.rates,
1488 ARRAY_SIZE(txi->control.rates));
1489 }
1490
1491 mac80211_hwsim_monitor_rx(hw, skb, chan);
1492
1493 if (_pid)
1494 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1495
1496 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1497 dev_kfree_skb(skb);
1498 }
1499
1500 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1501 struct ieee80211_vif *vif)
1502 {
1503 struct mac80211_hwsim_data *data = arg;
1504 struct ieee80211_hw *hw = data->hw;
1505 struct ieee80211_tx_info *info;
1506 struct ieee80211_rate *txrate;
1507 struct ieee80211_mgmt *mgmt;
1508 struct sk_buff *skb;
1509
1510 hwsim_check_magic(vif);
1511
1512 if (vif->type != NL80211_IFTYPE_AP &&
1513 vif->type != NL80211_IFTYPE_MESH_POINT &&
1514 vif->type != NL80211_IFTYPE_ADHOC)
1515 return;
1516
1517 skb = ieee80211_beacon_get(hw, vif);
1518 if (skb == NULL)
1519 return;
1520 info = IEEE80211_SKB_CB(skb);
1521 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1522 ieee80211_get_tx_rates(vif, NULL, skb,
1523 info->control.rates,
1524 ARRAY_SIZE(info->control.rates));
1525
1526 txrate = ieee80211_get_tx_rate(hw, info);
1527
1528 mgmt = (struct ieee80211_mgmt *) skb->data;
1529 /* fake header transmission time */
1530 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1531 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1532 data->tsf_offset +
1533 24 * 8 * 10 / txrate->bitrate);
1534
1535 mac80211_hwsim_tx_frame(hw, skb,
1536 rcu_dereference(vif->chanctx_conf)->def.chan);
1537
1538 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1539 ieee80211_csa_finish(vif);
1540 }
1541
1542 static enum hrtimer_restart
1543 mac80211_hwsim_beacon(struct hrtimer *timer)
1544 {
1545 struct mac80211_hwsim_data *data =
1546 container_of(timer, struct mac80211_hwsim_data,
1547 beacon_timer.timer);
1548 struct ieee80211_hw *hw = data->hw;
1549 u64 bcn_int = data->beacon_int;
1550 ktime_t next_bcn;
1551
1552 if (!data->started)
1553 goto out;
1554
1555 ieee80211_iterate_active_interfaces_atomic(
1556 hw, IEEE80211_IFACE_ITER_NORMAL,
1557 mac80211_hwsim_beacon_tx, data);
1558
1559 /* beacon at new TBTT + beacon interval */
1560 if (data->bcn_delta) {
1561 bcn_int -= data->bcn_delta;
1562 data->bcn_delta = 0;
1563 }
1564
1565 next_bcn = ktime_add(hrtimer_get_expires(timer),
1566 ns_to_ktime(bcn_int * 1000));
1567 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1568 out:
1569 return HRTIMER_NORESTART;
1570 }
1571
1572 static const char * const hwsim_chanwidths[] = {
1573 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1574 [NL80211_CHAN_WIDTH_20] = "ht20",
1575 [NL80211_CHAN_WIDTH_40] = "ht40",
1576 [NL80211_CHAN_WIDTH_80] = "vht80",
1577 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1578 [NL80211_CHAN_WIDTH_160] = "vht160",
1579 };
1580
1581 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1582 {
1583 struct mac80211_hwsim_data *data = hw->priv;
1584 struct ieee80211_conf *conf = &hw->conf;
1585 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1586 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1587 [IEEE80211_SMPS_OFF] = "off",
1588 [IEEE80211_SMPS_STATIC] = "static",
1589 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1590 };
1591 int idx;
1592
1593 if (conf->chandef.chan)
1594 wiphy_debug(hw->wiphy,
1595 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1596 __func__,
1597 conf->chandef.chan->center_freq,
1598 conf->chandef.center_freq1,
1599 conf->chandef.center_freq2,
1600 hwsim_chanwidths[conf->chandef.width],
1601 !!(conf->flags & IEEE80211_CONF_IDLE),
1602 !!(conf->flags & IEEE80211_CONF_PS),
1603 smps_modes[conf->smps_mode]);
1604 else
1605 wiphy_debug(hw->wiphy,
1606 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1607 __func__,
1608 !!(conf->flags & IEEE80211_CONF_IDLE),
1609 !!(conf->flags & IEEE80211_CONF_PS),
1610 smps_modes[conf->smps_mode]);
1611
1612 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1613
1614 WARN_ON(conf->chandef.chan && data->use_chanctx);
1615
1616 mutex_lock(&data->mutex);
1617 if (data->scanning && conf->chandef.chan) {
1618 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1619 if (data->survey_data[idx].channel == data->channel) {
1620 data->survey_data[idx].start =
1621 data->survey_data[idx].next_start;
1622 data->survey_data[idx].end = jiffies;
1623 break;
1624 }
1625 }
1626
1627 data->channel = conf->chandef.chan;
1628
1629 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1630 if (data->survey_data[idx].channel &&
1631 data->survey_data[idx].channel != data->channel)
1632 continue;
1633 data->survey_data[idx].channel = data->channel;
1634 data->survey_data[idx].next_start = jiffies;
1635 break;
1636 }
1637 } else {
1638 data->channel = conf->chandef.chan;
1639 }
1640 mutex_unlock(&data->mutex);
1641
1642 if (!data->started || !data->beacon_int)
1643 tasklet_hrtimer_cancel(&data->beacon_timer);
1644 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1645 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1646 u32 bcn_int = data->beacon_int;
1647 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1648
1649 tasklet_hrtimer_start(&data->beacon_timer,
1650 ns_to_ktime(until_tbtt * 1000),
1651 HRTIMER_MODE_REL);
1652 }
1653
1654 return 0;
1655 }
1656
1657
1658 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1659 unsigned int changed_flags,
1660 unsigned int *total_flags,u64 multicast)
1661 {
1662 struct mac80211_hwsim_data *data = hw->priv;
1663
1664 wiphy_debug(hw->wiphy, "%s\n", __func__);
1665
1666 data->rx_filter = 0;
1667 if (*total_flags & FIF_ALLMULTI)
1668 data->rx_filter |= FIF_ALLMULTI;
1669
1670 *total_flags = data->rx_filter;
1671 }
1672
1673 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1674 struct ieee80211_vif *vif)
1675 {
1676 unsigned int *count = data;
1677 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1678
1679 if (vp->bcn_en)
1680 (*count)++;
1681 }
1682
1683 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1684 struct ieee80211_vif *vif,
1685 struct ieee80211_bss_conf *info,
1686 u32 changed)
1687 {
1688 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1689 struct mac80211_hwsim_data *data = hw->priv;
1690
1691 hwsim_check_magic(vif);
1692
1693 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1694 __func__, changed, vif->addr);
1695
1696 if (changed & BSS_CHANGED_BSSID) {
1697 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1698 __func__, info->bssid);
1699 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1700 }
1701
1702 if (changed & BSS_CHANGED_ASSOC) {
1703 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1704 info->assoc, info->aid);
1705 vp->assoc = info->assoc;
1706 vp->aid = info->aid;
1707 }
1708
1709 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1710 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1711 info->enable_beacon, info->beacon_int);
1712 vp->bcn_en = info->enable_beacon;
1713 if (data->started &&
1714 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1715 info->enable_beacon) {
1716 u64 tsf, until_tbtt;
1717 u32 bcn_int;
1718 data->beacon_int = info->beacon_int * 1024;
1719 tsf = mac80211_hwsim_get_tsf(hw, vif);
1720 bcn_int = data->beacon_int;
1721 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1722 tasklet_hrtimer_start(&data->beacon_timer,
1723 ns_to_ktime(until_tbtt * 1000),
1724 HRTIMER_MODE_REL);
1725 } else if (!info->enable_beacon) {
1726 unsigned int count = 0;
1727 ieee80211_iterate_active_interfaces_atomic(
1728 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1729 mac80211_hwsim_bcn_en_iter, &count);
1730 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1731 count);
1732 if (count == 0) {
1733 tasklet_hrtimer_cancel(&data->beacon_timer);
1734 data->beacon_int = 0;
1735 }
1736 }
1737 }
1738
1739 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1740 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1741 info->use_cts_prot);
1742 }
1743
1744 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1745 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1746 info->use_short_preamble);
1747 }
1748
1749 if (changed & BSS_CHANGED_ERP_SLOT) {
1750 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1751 }
1752
1753 if (changed & BSS_CHANGED_HT) {
1754 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1755 info->ht_operation_mode);
1756 }
1757
1758 if (changed & BSS_CHANGED_BASIC_RATES) {
1759 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1760 (unsigned long long) info->basic_rates);
1761 }
1762
1763 if (changed & BSS_CHANGED_TXPOWER)
1764 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1765 }
1766
1767 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1768 struct ieee80211_vif *vif,
1769 struct ieee80211_sta *sta)
1770 {
1771 hwsim_check_magic(vif);
1772 hwsim_set_sta_magic(sta);
1773
1774 return 0;
1775 }
1776
1777 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1778 struct ieee80211_vif *vif,
1779 struct ieee80211_sta *sta)
1780 {
1781 hwsim_check_magic(vif);
1782 hwsim_clear_sta_magic(sta);
1783
1784 return 0;
1785 }
1786
1787 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1788 struct ieee80211_vif *vif,
1789 enum sta_notify_cmd cmd,
1790 struct ieee80211_sta *sta)
1791 {
1792 hwsim_check_magic(vif);
1793
1794 switch (cmd) {
1795 case STA_NOTIFY_SLEEP:
1796 case STA_NOTIFY_AWAKE:
1797 /* TODO: make good use of these flags */
1798 break;
1799 default:
1800 WARN(1, "Invalid sta notify: %d\n", cmd);
1801 break;
1802 }
1803 }
1804
1805 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1806 struct ieee80211_sta *sta,
1807 bool set)
1808 {
1809 hwsim_check_sta_magic(sta);
1810 return 0;
1811 }
1812
1813 static int mac80211_hwsim_conf_tx(
1814 struct ieee80211_hw *hw,
1815 struct ieee80211_vif *vif, u16 queue,
1816 const struct ieee80211_tx_queue_params *params)
1817 {
1818 wiphy_debug(hw->wiphy,
1819 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1820 __func__, queue,
1821 params->txop, params->cw_min,
1822 params->cw_max, params->aifs);
1823 return 0;
1824 }
1825
1826 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1827 struct survey_info *survey)
1828 {
1829 struct mac80211_hwsim_data *hwsim = hw->priv;
1830
1831 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1832 return -ENOENT;
1833
1834 mutex_lock(&hwsim->mutex);
1835 survey->channel = hwsim->survey_data[idx].channel;
1836 if (!survey->channel) {
1837 mutex_unlock(&hwsim->mutex);
1838 return -ENOENT;
1839 }
1840
1841 /*
1842 * Magically conjured dummy values --- this is only ok for simulated hardware.
1843 *
1844 * A real driver which cannot determine real values noise MUST NOT
1845 * report any, especially not a magically conjured ones :-)
1846 */
1847 survey->filled = SURVEY_INFO_NOISE_DBM |
1848 SURVEY_INFO_TIME |
1849 SURVEY_INFO_TIME_BUSY;
1850 survey->noise = -92;
1851 survey->time =
1852 jiffies_to_msecs(hwsim->survey_data[idx].end -
1853 hwsim->survey_data[idx].start);
1854 /* report 12.5% of channel time is used */
1855 survey->time_busy = survey->time/8;
1856 mutex_unlock(&hwsim->mutex);
1857
1858 return 0;
1859 }
1860
1861 #ifdef CONFIG_NL80211_TESTMODE
1862 /*
1863 * This section contains example code for using netlink
1864 * attributes with the testmode command in nl80211.
1865 */
1866
1867 /* These enums need to be kept in sync with userspace */
1868 enum hwsim_testmode_attr {
1869 __HWSIM_TM_ATTR_INVALID = 0,
1870 HWSIM_TM_ATTR_CMD = 1,
1871 HWSIM_TM_ATTR_PS = 2,
1872
1873 /* keep last */
1874 __HWSIM_TM_ATTR_AFTER_LAST,
1875 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1876 };
1877
1878 enum hwsim_testmode_cmd {
1879 HWSIM_TM_CMD_SET_PS = 0,
1880 HWSIM_TM_CMD_GET_PS = 1,
1881 HWSIM_TM_CMD_STOP_QUEUES = 2,
1882 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1883 };
1884
1885 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1886 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1887 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1888 };
1889
1890 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1891 struct ieee80211_vif *vif,
1892 void *data, int len)
1893 {
1894 struct mac80211_hwsim_data *hwsim = hw->priv;
1895 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1896 struct sk_buff *skb;
1897 int err, ps;
1898
1899 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1900 hwsim_testmode_policy, NULL);
1901 if (err)
1902 return err;
1903
1904 if (!tb[HWSIM_TM_ATTR_CMD])
1905 return -EINVAL;
1906
1907 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1908 case HWSIM_TM_CMD_SET_PS:
1909 if (!tb[HWSIM_TM_ATTR_PS])
1910 return -EINVAL;
1911 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1912 return hwsim_fops_ps_write(hwsim, ps);
1913 case HWSIM_TM_CMD_GET_PS:
1914 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1915 nla_total_size(sizeof(u32)));
1916 if (!skb)
1917 return -ENOMEM;
1918 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1919 goto nla_put_failure;
1920 return cfg80211_testmode_reply(skb);
1921 case HWSIM_TM_CMD_STOP_QUEUES:
1922 ieee80211_stop_queues(hw);
1923 return 0;
1924 case HWSIM_TM_CMD_WAKE_QUEUES:
1925 ieee80211_wake_queues(hw);
1926 return 0;
1927 default:
1928 return -EOPNOTSUPP;
1929 }
1930
1931 nla_put_failure:
1932 kfree_skb(skb);
1933 return -ENOBUFS;
1934 }
1935 #endif
1936
1937 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1938 struct ieee80211_vif *vif,
1939 struct ieee80211_ampdu_params *params)
1940 {
1941 struct ieee80211_sta *sta = params->sta;
1942 enum ieee80211_ampdu_mlme_action action = params->action;
1943 u16 tid = params->tid;
1944
1945 switch (action) {
1946 case IEEE80211_AMPDU_TX_START:
1947 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1948 break;
1949 case IEEE80211_AMPDU_TX_STOP_CONT:
1950 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1951 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1952 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1953 break;
1954 case IEEE80211_AMPDU_TX_OPERATIONAL:
1955 break;
1956 case IEEE80211_AMPDU_RX_START:
1957 case IEEE80211_AMPDU_RX_STOP:
1958 break;
1959 default:
1960 return -EOPNOTSUPP;
1961 }
1962
1963 return 0;
1964 }
1965
1966 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1967 struct ieee80211_vif *vif,
1968 u32 queues, bool drop)
1969 {
1970 /* Not implemented, queues only on kernel side */
1971 }
1972
1973 static void hw_scan_work(struct work_struct *work)
1974 {
1975 struct mac80211_hwsim_data *hwsim =
1976 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1977 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1978 int dwell, i;
1979
1980 mutex_lock(&hwsim->mutex);
1981 if (hwsim->scan_chan_idx >= req->n_channels) {
1982 struct cfg80211_scan_info info = {
1983 .aborted = false,
1984 };
1985
1986 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1987 ieee80211_scan_completed(hwsim->hw, &info);
1988 hwsim->hw_scan_request = NULL;
1989 hwsim->hw_scan_vif = NULL;
1990 hwsim->tmp_chan = NULL;
1991 mutex_unlock(&hwsim->mutex);
1992 return;
1993 }
1994
1995 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1996 req->channels[hwsim->scan_chan_idx]->center_freq);
1997
1998 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1999 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2000 IEEE80211_CHAN_RADAR) ||
2001 !req->n_ssids) {
2002 dwell = 120;
2003 } else {
2004 dwell = 30;
2005 /* send probes */
2006 for (i = 0; i < req->n_ssids; i++) {
2007 struct sk_buff *probe;
2008 struct ieee80211_mgmt *mgmt;
2009
2010 probe = ieee80211_probereq_get(hwsim->hw,
2011 hwsim->scan_addr,
2012 req->ssids[i].ssid,
2013 req->ssids[i].ssid_len,
2014 req->ie_len);
2015 if (!probe)
2016 continue;
2017
2018 mgmt = (struct ieee80211_mgmt *) probe->data;
2019 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2020 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2021
2022 if (req->ie_len)
2023 skb_put_data(probe, req->ie, req->ie_len);
2024
2025 local_bh_disable();
2026 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2027 hwsim->tmp_chan);
2028 local_bh_enable();
2029 }
2030 }
2031 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2032 msecs_to_jiffies(dwell));
2033 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2034 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2035 hwsim->survey_data[hwsim->scan_chan_idx].end =
2036 jiffies + msecs_to_jiffies(dwell);
2037 hwsim->scan_chan_idx++;
2038 mutex_unlock(&hwsim->mutex);
2039 }
2040
2041 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2042 struct ieee80211_vif *vif,
2043 struct ieee80211_scan_request *hw_req)
2044 {
2045 struct mac80211_hwsim_data *hwsim = hw->priv;
2046 struct cfg80211_scan_request *req = &hw_req->req;
2047
2048 mutex_lock(&hwsim->mutex);
2049 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2050 mutex_unlock(&hwsim->mutex);
2051 return -EBUSY;
2052 }
2053 hwsim->hw_scan_request = req;
2054 hwsim->hw_scan_vif = vif;
2055 hwsim->scan_chan_idx = 0;
2056 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2057 get_random_mask_addr(hwsim->scan_addr,
2058 hw_req->req.mac_addr,
2059 hw_req->req.mac_addr_mask);
2060 else
2061 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2062 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2063 mutex_unlock(&hwsim->mutex);
2064
2065 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2066
2067 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2068
2069 return 0;
2070 }
2071
2072 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2073 struct ieee80211_vif *vif)
2074 {
2075 struct mac80211_hwsim_data *hwsim = hw->priv;
2076 struct cfg80211_scan_info info = {
2077 .aborted = true,
2078 };
2079
2080 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2081
2082 cancel_delayed_work_sync(&hwsim->hw_scan);
2083
2084 mutex_lock(&hwsim->mutex);
2085 ieee80211_scan_completed(hwsim->hw, &info);
2086 hwsim->tmp_chan = NULL;
2087 hwsim->hw_scan_request = NULL;
2088 hwsim->hw_scan_vif = NULL;
2089 mutex_unlock(&hwsim->mutex);
2090 }
2091
2092 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2093 struct ieee80211_vif *vif,
2094 const u8 *mac_addr)
2095 {
2096 struct mac80211_hwsim_data *hwsim = hw->priv;
2097
2098 mutex_lock(&hwsim->mutex);
2099
2100 if (hwsim->scanning) {
2101 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2102 goto out;
2103 }
2104
2105 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2106
2107 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2108 hwsim->scanning = true;
2109 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2110
2111 out:
2112 mutex_unlock(&hwsim->mutex);
2113 }
2114
2115 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2116 struct ieee80211_vif *vif)
2117 {
2118 struct mac80211_hwsim_data *hwsim = hw->priv;
2119
2120 mutex_lock(&hwsim->mutex);
2121
2122 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2123 hwsim->scanning = false;
2124 eth_zero_addr(hwsim->scan_addr);
2125
2126 mutex_unlock(&hwsim->mutex);
2127 }
2128
2129 static void hw_roc_start(struct work_struct *work)
2130 {
2131 struct mac80211_hwsim_data *hwsim =
2132 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2133
2134 mutex_lock(&hwsim->mutex);
2135
2136 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2137 hwsim->tmp_chan = hwsim->roc_chan;
2138 ieee80211_ready_on_channel(hwsim->hw);
2139
2140 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2141 msecs_to_jiffies(hwsim->roc_duration));
2142
2143 mutex_unlock(&hwsim->mutex);
2144 }
2145
2146 static void hw_roc_done(struct work_struct *work)
2147 {
2148 struct mac80211_hwsim_data *hwsim =
2149 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2150
2151 mutex_lock(&hwsim->mutex);
2152 ieee80211_remain_on_channel_expired(hwsim->hw);
2153 hwsim->tmp_chan = NULL;
2154 mutex_unlock(&hwsim->mutex);
2155
2156 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2157 }
2158
2159 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2160 struct ieee80211_vif *vif,
2161 struct ieee80211_channel *chan,
2162 int duration,
2163 enum ieee80211_roc_type type)
2164 {
2165 struct mac80211_hwsim_data *hwsim = hw->priv;
2166
2167 mutex_lock(&hwsim->mutex);
2168 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2169 mutex_unlock(&hwsim->mutex);
2170 return -EBUSY;
2171 }
2172
2173 hwsim->roc_chan = chan;
2174 hwsim->roc_duration = duration;
2175 mutex_unlock(&hwsim->mutex);
2176
2177 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2178 chan->center_freq, duration);
2179 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2180
2181 return 0;
2182 }
2183
2184 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2185 {
2186 struct mac80211_hwsim_data *hwsim = hw->priv;
2187
2188 cancel_delayed_work_sync(&hwsim->roc_start);
2189 cancel_delayed_work_sync(&hwsim->roc_done);
2190
2191 mutex_lock(&hwsim->mutex);
2192 hwsim->tmp_chan = NULL;
2193 mutex_unlock(&hwsim->mutex);
2194
2195 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2196
2197 return 0;
2198 }
2199
2200 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2201 struct ieee80211_chanctx_conf *ctx)
2202 {
2203 hwsim_set_chanctx_magic(ctx);
2204 wiphy_debug(hw->wiphy,
2205 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2206 ctx->def.chan->center_freq, ctx->def.width,
2207 ctx->def.center_freq1, ctx->def.center_freq2);
2208 return 0;
2209 }
2210
2211 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2212 struct ieee80211_chanctx_conf *ctx)
2213 {
2214 wiphy_debug(hw->wiphy,
2215 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2216 ctx->def.chan->center_freq, ctx->def.width,
2217 ctx->def.center_freq1, ctx->def.center_freq2);
2218 hwsim_check_chanctx_magic(ctx);
2219 hwsim_clear_chanctx_magic(ctx);
2220 }
2221
2222 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2223 struct ieee80211_chanctx_conf *ctx,
2224 u32 changed)
2225 {
2226 hwsim_check_chanctx_magic(ctx);
2227 wiphy_debug(hw->wiphy,
2228 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2229 ctx->def.chan->center_freq, ctx->def.width,
2230 ctx->def.center_freq1, ctx->def.center_freq2);
2231 }
2232
2233 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2234 struct ieee80211_vif *vif,
2235 struct ieee80211_chanctx_conf *ctx)
2236 {
2237 hwsim_check_magic(vif);
2238 hwsim_check_chanctx_magic(ctx);
2239
2240 return 0;
2241 }
2242
2243 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2244 struct ieee80211_vif *vif,
2245 struct ieee80211_chanctx_conf *ctx)
2246 {
2247 hwsim_check_magic(vif);
2248 hwsim_check_chanctx_magic(ctx);
2249 }
2250
2251 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2252 "tx_pkts_nic",
2253 "tx_bytes_nic",
2254 "rx_pkts_nic",
2255 "rx_bytes_nic",
2256 "d_tx_dropped",
2257 "d_tx_failed",
2258 "d_ps_mode",
2259 "d_group",
2260 };
2261
2262 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2263
2264 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2265 struct ieee80211_vif *vif,
2266 u32 sset, u8 *data)
2267 {
2268 if (sset == ETH_SS_STATS)
2269 memcpy(data, *mac80211_hwsim_gstrings_stats,
2270 sizeof(mac80211_hwsim_gstrings_stats));
2271 }
2272
2273 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2274 struct ieee80211_vif *vif, int sset)
2275 {
2276 if (sset == ETH_SS_STATS)
2277 return MAC80211_HWSIM_SSTATS_LEN;
2278 return 0;
2279 }
2280
2281 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2282 struct ieee80211_vif *vif,
2283 struct ethtool_stats *stats, u64 *data)
2284 {
2285 struct mac80211_hwsim_data *ar = hw->priv;
2286 int i = 0;
2287
2288 data[i++] = ar->tx_pkts;
2289 data[i++] = ar->tx_bytes;
2290 data[i++] = ar->rx_pkts;
2291 data[i++] = ar->rx_bytes;
2292 data[i++] = ar->tx_dropped;
2293 data[i++] = ar->tx_failed;
2294 data[i++] = ar->ps;
2295 data[i++] = ar->group;
2296
2297 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2298 }
2299
2300 #define HWSIM_COMMON_OPS \
2301 .tx = mac80211_hwsim_tx, \
2302 .start = mac80211_hwsim_start, \
2303 .stop = mac80211_hwsim_stop, \
2304 .add_interface = mac80211_hwsim_add_interface, \
2305 .change_interface = mac80211_hwsim_change_interface, \
2306 .remove_interface = mac80211_hwsim_remove_interface, \
2307 .config = mac80211_hwsim_config, \
2308 .configure_filter = mac80211_hwsim_configure_filter, \
2309 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2310 .sta_add = mac80211_hwsim_sta_add, \
2311 .sta_remove = mac80211_hwsim_sta_remove, \
2312 .sta_notify = mac80211_hwsim_sta_notify, \
2313 .set_tim = mac80211_hwsim_set_tim, \
2314 .conf_tx = mac80211_hwsim_conf_tx, \
2315 .get_survey = mac80211_hwsim_get_survey, \
2316 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2317 .ampdu_action = mac80211_hwsim_ampdu_action, \
2318 .flush = mac80211_hwsim_flush, \
2319 .get_tsf = mac80211_hwsim_get_tsf, \
2320 .set_tsf = mac80211_hwsim_set_tsf, \
2321 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2322 .get_et_stats = mac80211_hwsim_get_et_stats, \
2323 .get_et_strings = mac80211_hwsim_get_et_strings,
2324
2325 static const struct ieee80211_ops mac80211_hwsim_ops = {
2326 HWSIM_COMMON_OPS
2327 .sw_scan_start = mac80211_hwsim_sw_scan,
2328 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2329 };
2330
2331 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2332 HWSIM_COMMON_OPS
2333 .hw_scan = mac80211_hwsim_hw_scan,
2334 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2335 .sw_scan_start = NULL,
2336 .sw_scan_complete = NULL,
2337 .remain_on_channel = mac80211_hwsim_roc,
2338 .cancel_remain_on_channel = mac80211_hwsim_croc,
2339 .add_chanctx = mac80211_hwsim_add_chanctx,
2340 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2341 .change_chanctx = mac80211_hwsim_change_chanctx,
2342 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2343 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2344 };
2345
2346 struct hwsim_new_radio_params {
2347 unsigned int channels;
2348 const char *reg_alpha2;
2349 const struct ieee80211_regdomain *regd;
2350 bool reg_strict;
2351 bool p2p_device;
2352 bool use_chanctx;
2353 bool destroy_on_close;
2354 const char *hwname;
2355 bool no_vif;
2356 };
2357
2358 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2359 struct genl_info *info)
2360 {
2361 if (info)
2362 genl_notify(&hwsim_genl_family, mcast_skb, info,
2363 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2364 else
2365 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2366 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2367 }
2368
2369 static int append_radio_msg(struct sk_buff *skb, int id,
2370 struct hwsim_new_radio_params *param)
2371 {
2372 int ret;
2373
2374 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2375 if (ret < 0)
2376 return ret;
2377
2378 if (param->channels) {
2379 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2380 if (ret < 0)
2381 return ret;
2382 }
2383
2384 if (param->reg_alpha2) {
2385 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2386 param->reg_alpha2);
2387 if (ret < 0)
2388 return ret;
2389 }
2390
2391 if (param->regd) {
2392 int i;
2393
2394 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2395 if (hwsim_world_regdom_custom[i] != param->regd)
2396 continue;
2397
2398 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2399 if (ret < 0)
2400 return ret;
2401 break;
2402 }
2403 }
2404
2405 if (param->reg_strict) {
2406 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2407 if (ret < 0)
2408 return ret;
2409 }
2410
2411 if (param->p2p_device) {
2412 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2413 if (ret < 0)
2414 return ret;
2415 }
2416
2417 if (param->use_chanctx) {
2418 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2419 if (ret < 0)
2420 return ret;
2421 }
2422
2423 if (param->hwname) {
2424 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2425 strlen(param->hwname), param->hwname);
2426 if (ret < 0)
2427 return ret;
2428 }
2429
2430 return 0;
2431 }
2432
2433 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2434 struct hwsim_new_radio_params *param)
2435 {
2436 struct sk_buff *mcast_skb;
2437 void *data;
2438
2439 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2440 if (!mcast_skb)
2441 return;
2442
2443 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2444 HWSIM_CMD_NEW_RADIO);
2445 if (!data)
2446 goto out_err;
2447
2448 if (append_radio_msg(mcast_skb, id, param) < 0)
2449 goto out_err;
2450
2451 genlmsg_end(mcast_skb, data);
2452
2453 hwsim_mcast_config_msg(mcast_skb, info);
2454 return;
2455
2456 out_err:
2457 genlmsg_cancel(mcast_skb, data);
2458 nlmsg_free(mcast_skb);
2459 }
2460
2461 static int mac80211_hwsim_new_radio(struct genl_info *info,
2462 struct hwsim_new_radio_params *param)
2463 {
2464 int err;
2465 u8 addr[ETH_ALEN];
2466 struct mac80211_hwsim_data *data;
2467 struct ieee80211_hw *hw;
2468 enum nl80211_band band;
2469 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2470 struct net *net;
2471 int idx;
2472
2473 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2474 return -EINVAL;
2475
2476 spin_lock_bh(&hwsim_radio_lock);
2477 idx = hwsim_radio_idx++;
2478 spin_unlock_bh(&hwsim_radio_lock);
2479
2480 if (param->use_chanctx)
2481 ops = &mac80211_hwsim_mchan_ops;
2482 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2483 if (!hw) {
2484 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2485 err = -ENOMEM;
2486 goto failed;
2487 }
2488
2489 /* ieee80211_alloc_hw_nm may have used a default name */
2490 param->hwname = wiphy_name(hw->wiphy);
2491
2492 if (info)
2493 net = genl_info_net(info);
2494 else
2495 net = &init_net;
2496 wiphy_net_set(hw->wiphy, net);
2497
2498 data = hw->priv;
2499 data->hw = hw;
2500
2501 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2502 if (IS_ERR(data->dev)) {
2503 printk(KERN_DEBUG
2504 "mac80211_hwsim: device_create failed (%ld)\n",
2505 PTR_ERR(data->dev));
2506 err = -ENOMEM;
2507 goto failed_drvdata;
2508 }
2509 data->dev->driver = &mac80211_hwsim_driver.driver;
2510 err = device_bind_driver(data->dev);
2511 if (err != 0) {
2512 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2513 err);
2514 goto failed_bind;
2515 }
2516
2517 skb_queue_head_init(&data->pending);
2518
2519 SET_IEEE80211_DEV(hw, data->dev);
2520 eth_zero_addr(addr);
2521 addr[0] = 0x02;
2522 addr[3] = idx >> 8;
2523 addr[4] = idx;
2524 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2525 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2526 data->addresses[1].addr[0] |= 0x40;
2527 hw->wiphy->n_addresses = 2;
2528 hw->wiphy->addresses = data->addresses;
2529
2530 data->channels = param->channels;
2531 data->use_chanctx = param->use_chanctx;
2532 data->idx = idx;
2533 data->destroy_on_close = param->destroy_on_close;
2534 if (info)
2535 data->portid = info->snd_portid;
2536
2537 if (data->use_chanctx) {
2538 hw->wiphy->max_scan_ssids = 255;
2539 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2540 hw->wiphy->max_remain_on_channel_duration = 1000;
2541 hw->wiphy->iface_combinations = &data->if_combination;
2542 if (param->p2p_device)
2543 data->if_combination = hwsim_if_comb_p2p_dev[0];
2544 else
2545 data->if_combination = hwsim_if_comb[0];
2546 hw->wiphy->n_iface_combinations = 1;
2547 /* For channels > 1 DFS is not allowed */
2548 data->if_combination.radar_detect_widths = 0;
2549 data->if_combination.num_different_channels = data->channels;
2550 } else if (param->p2p_device) {
2551 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2552 hw->wiphy->n_iface_combinations =
2553 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2554 } else {
2555 hw->wiphy->iface_combinations = hwsim_if_comb;
2556 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2557 }
2558
2559 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2560 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2561 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2562
2563 hw->queues = 5;
2564 hw->offchannel_tx_hw_queue = 4;
2565 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2566 BIT(NL80211_IFTYPE_AP) |
2567 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2568 BIT(NL80211_IFTYPE_P2P_GO) |
2569 BIT(NL80211_IFTYPE_ADHOC) |
2570 BIT(NL80211_IFTYPE_MESH_POINT);
2571
2572 if (param->p2p_device)
2573 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2574
2575 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2576 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2577 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2578 ieee80211_hw_set(hw, QUEUE_CONTROL);
2579 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2580 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2581 ieee80211_hw_set(hw, MFP_CAPABLE);
2582 ieee80211_hw_set(hw, SIGNAL_DBM);
2583 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2584 if (rctbl)
2585 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2586
2587 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2588 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2589 WIPHY_FLAG_AP_UAPSD |
2590 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2591 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2592 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2593 NL80211_FEATURE_STATIC_SMPS |
2594 NL80211_FEATURE_DYNAMIC_SMPS |
2595 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2596 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2597
2598 /* ask mac80211 to reserve space for magic */
2599 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2600 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2601 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2602
2603 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2604 sizeof(hwsim_channels_2ghz));
2605 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2606 sizeof(hwsim_channels_5ghz));
2607 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2608
2609 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2610 struct ieee80211_supported_band *sband = &data->bands[band];
2611 switch (band) {
2612 case NL80211_BAND_2GHZ:
2613 sband->channels = data->channels_2ghz;
2614 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2615 sband->bitrates = data->rates;
2616 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2617 break;
2618 case NL80211_BAND_5GHZ:
2619 sband->channels = data->channels_5ghz;
2620 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2621 sband->bitrates = data->rates + 4;
2622 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2623
2624 sband->vht_cap.vht_supported = true;
2625 sband->vht_cap.cap =
2626 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2627 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2628 IEEE80211_VHT_CAP_RXLDPC |
2629 IEEE80211_VHT_CAP_SHORT_GI_80 |
2630 IEEE80211_VHT_CAP_SHORT_GI_160 |
2631 IEEE80211_VHT_CAP_TXSTBC |
2632 IEEE80211_VHT_CAP_RXSTBC_1 |
2633 IEEE80211_VHT_CAP_RXSTBC_2 |
2634 IEEE80211_VHT_CAP_RXSTBC_3 |
2635 IEEE80211_VHT_CAP_RXSTBC_4 |
2636 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2637 sband->vht_cap.vht_mcs.rx_mcs_map =
2638 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2639 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2640 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2641 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2642 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2643 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2644 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2645 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2646 sband->vht_cap.vht_mcs.tx_mcs_map =
2647 sband->vht_cap.vht_mcs.rx_mcs_map;
2648 break;
2649 default:
2650 continue;
2651 }
2652
2653 sband->ht_cap.ht_supported = true;
2654 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2655 IEEE80211_HT_CAP_GRN_FLD |
2656 IEEE80211_HT_CAP_SGI_20 |
2657 IEEE80211_HT_CAP_SGI_40 |
2658 IEEE80211_HT_CAP_DSSSCCK40;
2659 sband->ht_cap.ampdu_factor = 0x3;
2660 sband->ht_cap.ampdu_density = 0x6;
2661 memset(&sband->ht_cap.mcs, 0,
2662 sizeof(sband->ht_cap.mcs));
2663 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2664 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2665 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2666
2667 hw->wiphy->bands[band] = sband;
2668 }
2669
2670 /* By default all radios belong to the first group */
2671 data->group = 1;
2672 mutex_init(&data->mutex);
2673
2674 data->netgroup = hwsim_net_get_netgroup(net);
2675
2676 /* Enable frame retransmissions for lossy channels */
2677 hw->max_rates = 4;
2678 hw->max_rate_tries = 11;
2679
2680 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2681 hw->wiphy->n_vendor_commands =
2682 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2683 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2684 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2685
2686 if (param->reg_strict)
2687 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2688 if (param->regd) {
2689 data->regd = param->regd;
2690 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2691 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2692 /* give the regulatory workqueue a chance to run */
2693 schedule_timeout_interruptible(1);
2694 }
2695
2696 if (param->no_vif)
2697 ieee80211_hw_set(hw, NO_AUTO_VIF);
2698
2699 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2700
2701 err = ieee80211_register_hw(hw);
2702 if (err < 0) {
2703 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2704 err);
2705 goto failed_hw;
2706 }
2707
2708 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2709
2710 if (param->reg_alpha2) {
2711 data->alpha2[0] = param->reg_alpha2[0];
2712 data->alpha2[1] = param->reg_alpha2[1];
2713 regulatory_hint(hw->wiphy, param->reg_alpha2);
2714 }
2715
2716 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2717 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2718 debugfs_create_file("group", 0666, data->debugfs, data,
2719 &hwsim_fops_group);
2720 if (!data->use_chanctx)
2721 debugfs_create_file("dfs_simulate_radar", 0222,
2722 data->debugfs,
2723 data, &hwsim_simulate_radar);
2724
2725 tasklet_hrtimer_init(&data->beacon_timer,
2726 mac80211_hwsim_beacon,
2727 CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2728
2729 spin_lock_bh(&hwsim_radio_lock);
2730 list_add_tail(&data->list, &hwsim_radios);
2731 spin_unlock_bh(&hwsim_radio_lock);
2732
2733 if (idx > 0)
2734 hwsim_mcast_new_radio(idx, info, param);
2735
2736 return idx;
2737
2738 failed_hw:
2739 device_release_driver(data->dev);
2740 failed_bind:
2741 device_unregister(data->dev);
2742 failed_drvdata:
2743 ieee80211_free_hw(hw);
2744 failed:
2745 return err;
2746 }
2747
2748 static void hwsim_mcast_del_radio(int id, const char *hwname,
2749 struct genl_info *info)
2750 {
2751 struct sk_buff *skb;
2752 void *data;
2753 int ret;
2754
2755 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2756 if (!skb)
2757 return;
2758
2759 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2760 HWSIM_CMD_DEL_RADIO);
2761 if (!data)
2762 goto error;
2763
2764 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2765 if (ret < 0)
2766 goto error;
2767
2768 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2769 hwname);
2770 if (ret < 0)
2771 goto error;
2772
2773 genlmsg_end(skb, data);
2774
2775 hwsim_mcast_config_msg(skb, info);
2776
2777 return;
2778
2779 error:
2780 nlmsg_free(skb);
2781 }
2782
2783 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2784 const char *hwname,
2785 struct genl_info *info)
2786 {
2787 hwsim_mcast_del_radio(data->idx, hwname, info);
2788 debugfs_remove_recursive(data->debugfs);
2789 ieee80211_unregister_hw(data->hw);
2790 device_release_driver(data->dev);
2791 device_unregister(data->dev);
2792 ieee80211_free_hw(data->hw);
2793 }
2794
2795 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2796 struct mac80211_hwsim_data *data,
2797 u32 portid, u32 seq,
2798 struct netlink_callback *cb, int flags)
2799 {
2800 void *hdr;
2801 struct hwsim_new_radio_params param = { };
2802 int res = -EMSGSIZE;
2803
2804 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2805 HWSIM_CMD_GET_RADIO);
2806 if (!hdr)
2807 return -EMSGSIZE;
2808
2809 if (cb)
2810 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2811
2812 if (data->alpha2[0] && data->alpha2[1])
2813 param.reg_alpha2 = data->alpha2;
2814
2815 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2816 REGULATORY_STRICT_REG);
2817 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2818 BIT(NL80211_IFTYPE_P2P_DEVICE));
2819 param.use_chanctx = data->use_chanctx;
2820 param.regd = data->regd;
2821 param.channels = data->channels;
2822 param.hwname = wiphy_name(data->hw->wiphy);
2823
2824 res = append_radio_msg(skb, data->idx, &param);
2825 if (res < 0)
2826 goto out_err;
2827
2828 genlmsg_end(skb, hdr);
2829 return 0;
2830
2831 out_err:
2832 genlmsg_cancel(skb, hdr);
2833 return res;
2834 }
2835
2836 static void mac80211_hwsim_free(void)
2837 {
2838 struct mac80211_hwsim_data *data;
2839
2840 spin_lock_bh(&hwsim_radio_lock);
2841 while ((data = list_first_entry_or_null(&hwsim_radios,
2842 struct mac80211_hwsim_data,
2843 list))) {
2844 list_del(&data->list);
2845 spin_unlock_bh(&hwsim_radio_lock);
2846 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2847 NULL);
2848 spin_lock_bh(&hwsim_radio_lock);
2849 }
2850 spin_unlock_bh(&hwsim_radio_lock);
2851 class_destroy(hwsim_class);
2852 }
2853
2854 static const struct net_device_ops hwsim_netdev_ops = {
2855 .ndo_start_xmit = hwsim_mon_xmit,
2856 .ndo_set_mac_address = eth_mac_addr,
2857 .ndo_validate_addr = eth_validate_addr,
2858 };
2859
2860 static void hwsim_mon_setup(struct net_device *dev)
2861 {
2862 dev->netdev_ops = &hwsim_netdev_ops;
2863 dev->needs_free_netdev = true;
2864 ether_setup(dev);
2865 dev->priv_flags |= IFF_NO_QUEUE;
2866 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2867 eth_zero_addr(dev->dev_addr);
2868 dev->dev_addr[0] = 0x12;
2869 }
2870
2871 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2872 {
2873 struct mac80211_hwsim_data *data;
2874 bool _found = false;
2875
2876 spin_lock_bh(&hwsim_radio_lock);
2877 list_for_each_entry(data, &hwsim_radios, list) {
2878 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2879 _found = true;
2880 break;
2881 }
2882 }
2883 spin_unlock_bh(&hwsim_radio_lock);
2884
2885 if (!_found)
2886 return NULL;
2887
2888 return data;
2889 }
2890
2891 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2892 {
2893 struct mac80211_hwsim_data *data;
2894
2895 hwsim_net_set_wmediumd(net, portid);
2896
2897 spin_lock_bh(&hwsim_radio_lock);
2898 list_for_each_entry(data, &hwsim_radios, list) {
2899 if (data->netgroup == hwsim_net_get_netgroup(net))
2900 data->wmediumd = portid;
2901 }
2902 spin_unlock_bh(&hwsim_radio_lock);
2903 }
2904
2905 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2906 struct genl_info *info)
2907 {
2908
2909 struct ieee80211_hdr *hdr;
2910 struct mac80211_hwsim_data *data2;
2911 struct ieee80211_tx_info *txi;
2912 struct hwsim_tx_rate *tx_attempts;
2913 u64 ret_skb_cookie;
2914 struct sk_buff *skb, *tmp;
2915 const u8 *src;
2916 unsigned int hwsim_flags;
2917 int i;
2918 bool found = false;
2919
2920 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2921 !info->attrs[HWSIM_ATTR_FLAGS] ||
2922 !info->attrs[HWSIM_ATTR_COOKIE] ||
2923 !info->attrs[HWSIM_ATTR_SIGNAL] ||
2924 !info->attrs[HWSIM_ATTR_TX_INFO])
2925 goto out;
2926
2927 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2928 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2929 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2930
2931 data2 = get_hwsim_data_ref_from_addr(src);
2932 if (!data2)
2933 goto out;
2934
2935 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2936 goto out;
2937
2938 if (info->snd_portid != data2->wmediumd)
2939 goto out;
2940
2941 /* look for the skb matching the cookie passed back from user */
2942 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2943 u64 skb_cookie;
2944
2945 txi = IEEE80211_SKB_CB(skb);
2946 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2947
2948 if (skb_cookie == ret_skb_cookie) {
2949 skb_unlink(skb, &data2->pending);
2950 found = true;
2951 break;
2952 }
2953 }
2954
2955 /* not found */
2956 if (!found)
2957 goto out;
2958
2959 /* Tx info received because the frame was broadcasted on user space,
2960 so we get all the necessary info: tx attempts and skb control buff */
2961
2962 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2963 info->attrs[HWSIM_ATTR_TX_INFO]);
2964
2965 /* now send back TX status */
2966 txi = IEEE80211_SKB_CB(skb);
2967
2968 ieee80211_tx_info_clear_status(txi);
2969
2970 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2971 txi->status.rates[i].idx = tx_attempts[i].idx;
2972 txi->status.rates[i].count = tx_attempts[i].count;
2973 /*txi->status.rates[i].flags = 0;*/
2974 }
2975
2976 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2977
2978 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2979 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2980 if (skb->len >= 16) {
2981 hdr = (struct ieee80211_hdr *) skb->data;
2982 mac80211_hwsim_monitor_ack(data2->channel,
2983 hdr->addr2);
2984 }
2985 txi->flags |= IEEE80211_TX_STAT_ACK;
2986 }
2987 ieee80211_tx_status_irqsafe(data2->hw, skb);
2988 return 0;
2989 out:
2990 return -EINVAL;
2991
2992 }
2993
2994 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2995 struct genl_info *info)
2996 {
2997 struct mac80211_hwsim_data *data2;
2998 struct ieee80211_rx_status rx_status;
2999 const u8 *dst;
3000 int frame_data_len;
3001 void *frame_data;
3002 struct sk_buff *skb = NULL;
3003
3004 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3005 !info->attrs[HWSIM_ATTR_FRAME] ||
3006 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3007 !info->attrs[HWSIM_ATTR_SIGNAL])
3008 goto out;
3009
3010 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3011 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3012 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3013
3014 /* Allocate new skb here */
3015 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3016 if (skb == NULL)
3017 goto err;
3018
3019 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3020 goto err;
3021
3022 /* Copy the data */
3023 skb_put_data(skb, frame_data, frame_data_len);
3024
3025 data2 = get_hwsim_data_ref_from_addr(dst);
3026 if (!data2)
3027 goto out;
3028
3029 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3030 goto out;
3031
3032 if (info->snd_portid != data2->wmediumd)
3033 goto out;
3034
3035 /* check if radio is configured properly */
3036
3037 if (data2->idle || !data2->started)
3038 goto out;
3039
3040 /* A frame is received from user space */
3041 memset(&rx_status, 0, sizeof(rx_status));
3042 if (info->attrs[HWSIM_ATTR_FREQ]) {
3043 /* throw away off-channel packets, but allow both the temporary
3044 * ("hw" scan/remain-on-channel) and regular channel, since the
3045 * internal datapath also allows this
3046 */
3047 mutex_lock(&data2->mutex);
3048 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3049
3050 if (rx_status.freq != data2->channel->center_freq &&
3051 (!data2->tmp_chan ||
3052 rx_status.freq != data2->tmp_chan->center_freq)) {
3053 mutex_unlock(&data2->mutex);
3054 goto out;
3055 }
3056 mutex_unlock(&data2->mutex);
3057 } else {
3058 rx_status.freq = data2->channel->center_freq;
3059 }
3060
3061 rx_status.band = data2->channel->band;
3062 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3063 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3064
3065 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3066 data2->rx_pkts++;
3067 data2->rx_bytes += skb->len;
3068 ieee80211_rx_irqsafe(data2->hw, skb);
3069
3070 return 0;
3071 err:
3072 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3073 out:
3074 dev_kfree_skb(skb);
3075 return -EINVAL;
3076 }
3077
3078 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3079 struct genl_info *info)
3080 {
3081 struct net *net = genl_info_net(info);
3082 struct mac80211_hwsim_data *data;
3083 int chans = 1;
3084
3085 spin_lock_bh(&hwsim_radio_lock);
3086 list_for_each_entry(data, &hwsim_radios, list)
3087 chans = max(chans, data->channels);
3088 spin_unlock_bh(&hwsim_radio_lock);
3089
3090 /* In the future we should revise the userspace API and allow it
3091 * to set a flag that it does support multi-channel, then we can
3092 * let this pass conditionally on the flag.
3093 * For current userspace, prohibit it since it won't work right.
3094 */
3095 if (chans > 1)
3096 return -EOPNOTSUPP;
3097
3098 if (hwsim_net_get_wmediumd(net))
3099 return -EBUSY;
3100
3101 hwsim_register_wmediumd(net, info->snd_portid);
3102
3103 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3104 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3105
3106 return 0;
3107 }
3108
3109 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3110 {
3111 struct hwsim_new_radio_params param = { 0 };
3112 const char *hwname = NULL;
3113
3114 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3115 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3116 param.channels = channels;
3117 param.destroy_on_close =
3118 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3119
3120 if (info->attrs[HWSIM_ATTR_CHANNELS])
3121 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3122
3123 if (info->attrs[HWSIM_ATTR_NO_VIF])
3124 param.no_vif = true;
3125
3126 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3127 hwname = kasprintf(GFP_KERNEL, "%.*s",
3128 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3129 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3130 if (!hwname)
3131 return -ENOMEM;
3132 param.hwname = hwname;
3133 }
3134
3135 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3136 param.use_chanctx = true;
3137 else
3138 param.use_chanctx = (param.channels > 1);
3139
3140 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3141 param.reg_alpha2 =
3142 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3143
3144 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3145 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3146
3147 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3148 return -EINVAL;
3149 param.regd = hwsim_world_regdom_custom[idx];
3150 }
3151
3152 return mac80211_hwsim_new_radio(info, &param);
3153 }
3154
3155 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3156 {
3157 struct mac80211_hwsim_data *data;
3158 s64 idx = -1;
3159 const char *hwname = NULL;
3160
3161 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3162 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3163 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3164 hwname = kasprintf(GFP_KERNEL, "%.*s",
3165 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3166 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3167 if (!hwname)
3168 return -ENOMEM;
3169 } else
3170 return -EINVAL;
3171
3172 spin_lock_bh(&hwsim_radio_lock);
3173 list_for_each_entry(data, &hwsim_radios, list) {
3174 if (idx >= 0) {
3175 if (data->idx != idx)
3176 continue;
3177 } else {
3178 if (!hwname ||
3179 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3180 continue;
3181 }
3182
3183 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3184 continue;
3185
3186 list_del(&data->list);
3187 spin_unlock_bh(&hwsim_radio_lock);
3188 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3189 info);
3190 kfree(hwname);
3191 return 0;
3192 }
3193 spin_unlock_bh(&hwsim_radio_lock);
3194
3195 kfree(hwname);
3196 return -ENODEV;
3197 }
3198
3199 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3200 {
3201 struct mac80211_hwsim_data *data;
3202 struct sk_buff *skb;
3203 int idx, res = -ENODEV;
3204
3205 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3206 return -EINVAL;
3207 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3208
3209 spin_lock_bh(&hwsim_radio_lock);
3210 list_for_each_entry(data, &hwsim_radios, list) {
3211 if (data->idx != idx)
3212 continue;
3213
3214 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3215 continue;
3216
3217 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3218 if (!skb) {
3219 res = -ENOMEM;
3220 goto out_err;
3221 }
3222
3223 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3224 info->snd_seq, NULL, 0);
3225 if (res < 0) {
3226 nlmsg_free(skb);
3227 goto out_err;
3228 }
3229
3230 genlmsg_reply(skb, info);
3231 break;
3232 }
3233
3234 out_err:
3235 spin_unlock_bh(&hwsim_radio_lock);
3236
3237 return res;
3238 }
3239
3240 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3241 struct netlink_callback *cb)
3242 {
3243 int idx = cb->args[0];
3244 struct mac80211_hwsim_data *data = NULL;
3245 int res;
3246
3247 spin_lock_bh(&hwsim_radio_lock);
3248
3249 if (idx == hwsim_radio_idx)
3250 goto done;
3251
3252 list_for_each_entry(data, &hwsim_radios, list) {
3253 if (data->idx < idx)
3254 continue;
3255
3256 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3257 continue;
3258
3259 res = mac80211_hwsim_get_radio(skb, data,
3260 NETLINK_CB(cb->skb).portid,
3261 cb->nlh->nlmsg_seq, cb,
3262 NLM_F_MULTI);
3263 if (res < 0)
3264 break;
3265
3266 idx = data->idx + 1;
3267 }
3268
3269 cb->args[0] = idx;
3270
3271 done:
3272 spin_unlock_bh(&hwsim_radio_lock);
3273 return skb->len;
3274 }
3275
3276 /* Generic Netlink operations array */
3277 static const struct genl_ops hwsim_ops[] = {
3278 {
3279 .cmd = HWSIM_CMD_REGISTER,
3280 .policy = hwsim_genl_policy,
3281 .doit = hwsim_register_received_nl,
3282 .flags = GENL_UNS_ADMIN_PERM,
3283 },
3284 {
3285 .cmd = HWSIM_CMD_FRAME,
3286 .policy = hwsim_genl_policy,
3287 .doit = hwsim_cloned_frame_received_nl,
3288 },
3289 {
3290 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3291 .policy = hwsim_genl_policy,
3292 .doit = hwsim_tx_info_frame_received_nl,
3293 },
3294 {
3295 .cmd = HWSIM_CMD_NEW_RADIO,
3296 .policy = hwsim_genl_policy,
3297 .doit = hwsim_new_radio_nl,
3298 .flags = GENL_UNS_ADMIN_PERM,
3299 },
3300 {
3301 .cmd = HWSIM_CMD_DEL_RADIO,
3302 .policy = hwsim_genl_policy,
3303 .doit = hwsim_del_radio_nl,
3304 .flags = GENL_UNS_ADMIN_PERM,
3305 },
3306 {
3307 .cmd = HWSIM_CMD_GET_RADIO,
3308 .policy = hwsim_genl_policy,
3309 .doit = hwsim_get_radio_nl,
3310 .dumpit = hwsim_dump_radio_nl,
3311 },
3312 };
3313
3314 static struct genl_family hwsim_genl_family __ro_after_init = {
3315 .name = "MAC80211_HWSIM",
3316 .version = 1,
3317 .maxattr = HWSIM_ATTR_MAX,
3318 .netnsok = true,
3319 .module = THIS_MODULE,
3320 .ops = hwsim_ops,
3321 .n_ops = ARRAY_SIZE(hwsim_ops),
3322 .mcgrps = hwsim_mcgrps,
3323 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3324 };
3325
3326 static void destroy_radio(struct work_struct *work)
3327 {
3328 struct mac80211_hwsim_data *data =
3329 container_of(work, struct mac80211_hwsim_data, destroy_work);
3330
3331 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3332 }
3333
3334 static void remove_user_radios(u32 portid)
3335 {
3336 struct mac80211_hwsim_data *entry, *tmp;
3337
3338 spin_lock_bh(&hwsim_radio_lock);
3339 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3340 if (entry->destroy_on_close && entry->portid == portid) {
3341 list_del(&entry->list);
3342 INIT_WORK(&entry->destroy_work, destroy_radio);
3343 schedule_work(&entry->destroy_work);
3344 }
3345 }
3346 spin_unlock_bh(&hwsim_radio_lock);
3347 }
3348
3349 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3350 unsigned long state,
3351 void *_notify)
3352 {
3353 struct netlink_notify *notify = _notify;
3354
3355 if (state != NETLINK_URELEASE)
3356 return NOTIFY_DONE;
3357
3358 remove_user_radios(notify->portid);
3359
3360 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3361 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3362 " socket, switching to perfect channel medium\n");
3363 hwsim_register_wmediumd(notify->net, 0);
3364 }
3365 return NOTIFY_DONE;
3366
3367 }
3368
3369 static struct notifier_block hwsim_netlink_notifier = {
3370 .notifier_call = mac80211_hwsim_netlink_notify,
3371 };
3372
3373 static int __init hwsim_init_netlink(void)
3374 {
3375 int rc;
3376
3377 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3378
3379 rc = genl_register_family(&hwsim_genl_family);
3380 if (rc)
3381 goto failure;
3382
3383 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3384 if (rc) {
3385 genl_unregister_family(&hwsim_genl_family);
3386 goto failure;
3387 }
3388
3389 return 0;
3390
3391 failure:
3392 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3393 return -EINVAL;
3394 }
3395
3396 static __net_init int hwsim_init_net(struct net *net)
3397 {
3398 hwsim_net_set_netgroup(net);
3399
3400 return 0;
3401 }
3402
3403 static void __net_exit hwsim_exit_net(struct net *net)
3404 {
3405 struct mac80211_hwsim_data *data, *tmp;
3406
3407 spin_lock_bh(&hwsim_radio_lock);
3408 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3409 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3410 continue;
3411
3412 /* Radios created in init_net are returned to init_net. */
3413 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3414 continue;
3415
3416 list_del(&data->list);
3417 INIT_WORK(&data->destroy_work, destroy_radio);
3418 schedule_work(&data->destroy_work);
3419 }
3420 spin_unlock_bh(&hwsim_radio_lock);
3421 }
3422
3423 static struct pernet_operations hwsim_net_ops = {
3424 .init = hwsim_init_net,
3425 .exit = hwsim_exit_net,
3426 .id = &hwsim_net_id,
3427 .size = sizeof(struct hwsim_net),
3428 };
3429
3430 static void hwsim_exit_netlink(void)
3431 {
3432 /* unregister the notifier */
3433 netlink_unregister_notifier(&hwsim_netlink_notifier);
3434 /* unregister the family */
3435 genl_unregister_family(&hwsim_genl_family);
3436 }
3437
3438 static int __init init_mac80211_hwsim(void)
3439 {
3440 int i, err;
3441
3442 if (radios < 0 || radios > 100)
3443 return -EINVAL;
3444
3445 if (channels < 1)
3446 return -EINVAL;
3447
3448 spin_lock_init(&hwsim_radio_lock);
3449
3450 err = register_pernet_device(&hwsim_net_ops);
3451 if (err)
3452 return err;
3453
3454 err = platform_driver_register(&mac80211_hwsim_driver);
3455 if (err)
3456 goto out_unregister_pernet;
3457
3458 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3459 if (IS_ERR(hwsim_class)) {
3460 err = PTR_ERR(hwsim_class);
3461 goto out_unregister_driver;
3462 }
3463
3464 err = hwsim_init_netlink();
3465 if (err < 0)
3466 goto out_unregister_driver;
3467
3468 for (i = 0; i < radios; i++) {
3469 struct hwsim_new_radio_params param = { 0 };
3470
3471 param.channels = channels;
3472
3473 switch (regtest) {
3474 case HWSIM_REGTEST_DIFF_COUNTRY:
3475 if (i < ARRAY_SIZE(hwsim_alpha2s))
3476 param.reg_alpha2 = hwsim_alpha2s[i];
3477 break;
3478 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3479 if (!i)
3480 param.reg_alpha2 = hwsim_alpha2s[0];
3481 break;
3482 case HWSIM_REGTEST_STRICT_ALL:
3483 param.reg_strict = true;
3484 case HWSIM_REGTEST_DRIVER_REG_ALL:
3485 param.reg_alpha2 = hwsim_alpha2s[0];
3486 break;
3487 case HWSIM_REGTEST_WORLD_ROAM:
3488 if (i == 0)
3489 param.regd = &hwsim_world_regdom_custom_01;
3490 break;
3491 case HWSIM_REGTEST_CUSTOM_WORLD:
3492 param.regd = &hwsim_world_regdom_custom_01;
3493 break;
3494 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3495 if (i == 0)
3496 param.regd = &hwsim_world_regdom_custom_01;
3497 else if (i == 1)
3498 param.regd = &hwsim_world_regdom_custom_02;
3499 break;
3500 case HWSIM_REGTEST_STRICT_FOLLOW:
3501 if (i == 0) {
3502 param.reg_strict = true;
3503 param.reg_alpha2 = hwsim_alpha2s[0];
3504 }
3505 break;
3506 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3507 if (i == 0) {
3508 param.reg_strict = true;
3509 param.reg_alpha2 = hwsim_alpha2s[0];
3510 } else if (i == 1) {
3511 param.reg_alpha2 = hwsim_alpha2s[1];
3512 }
3513 break;
3514 case HWSIM_REGTEST_ALL:
3515 switch (i) {
3516 case 0:
3517 param.regd = &hwsim_world_regdom_custom_01;
3518 break;
3519 case 1:
3520 param.regd = &hwsim_world_regdom_custom_02;
3521 break;
3522 case 2:
3523 param.reg_alpha2 = hwsim_alpha2s[0];
3524 break;
3525 case 3:
3526 param.reg_alpha2 = hwsim_alpha2s[1];
3527 break;
3528 case 4:
3529 param.reg_strict = true;
3530 param.reg_alpha2 = hwsim_alpha2s[2];
3531 break;
3532 }
3533 break;
3534 default:
3535 break;
3536 }
3537
3538 param.p2p_device = support_p2p_device;
3539 param.use_chanctx = channels > 1;
3540
3541 err = mac80211_hwsim_new_radio(NULL, &param);
3542 if (err < 0)
3543 goto out_free_radios;
3544 }
3545
3546 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3547 hwsim_mon_setup);
3548 if (hwsim_mon == NULL) {
3549 err = -ENOMEM;
3550 goto out_free_radios;
3551 }
3552
3553 rtnl_lock();
3554 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3555 if (err < 0) {
3556 rtnl_unlock();
3557 goto out_free_radios;
3558 }
3559
3560 err = register_netdevice(hwsim_mon);
3561 if (err < 0) {
3562 rtnl_unlock();
3563 goto out_free_mon;
3564 }
3565 rtnl_unlock();
3566
3567 return 0;
3568
3569 out_free_mon:
3570 free_netdev(hwsim_mon);
3571 out_free_radios:
3572 mac80211_hwsim_free();
3573 out_unregister_driver:
3574 platform_driver_unregister(&mac80211_hwsim_driver);
3575 out_unregister_pernet:
3576 unregister_pernet_device(&hwsim_net_ops);
3577 return err;
3578 }
3579 module_init(init_mac80211_hwsim);
3580
3581 static void __exit exit_mac80211_hwsim(void)
3582 {
3583 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3584
3585 hwsim_exit_netlink();
3586
3587 mac80211_hwsim_free();
3588 unregister_netdev(hwsim_mon);
3589 platform_driver_unregister(&mac80211_hwsim_driver);
3590 unregister_pernet_device(&hwsim_net_ops);
3591 }
3592 module_exit(exit_mac80211_hwsim);
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