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mac80211_hwsim: support any address in userspace
[linux-2.6/btrfs-unstable.git] / drivers / net / wireless / mac80211_hwsim.c
blobe259ee174a0dd4795085482546c0b86d5fe79c8f
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 "mac80211_hwsim.h"
34
35 #define WARN_QUEUE 100
36 #define MAX_QUEUE 200
37
38 MODULE_AUTHOR("Jouni Malinen");
39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
40 MODULE_LICENSE("GPL");
41
42 static u32 wmediumd_portid;
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 struct class *hwsim_class;
254
255 static struct net_device *hwsim_mon; /* global monitor netdev */
256
257 #define CHAN2G(_freq) { \
258 .band = IEEE80211_BAND_2GHZ, \
259 .center_freq = (_freq), \
260 .hw_value = (_freq), \
261 .max_power = 20, \
262 }
263
264 #define CHAN5G(_freq) { \
265 .band = IEEE80211_BAND_5GHZ, \
266 .center_freq = (_freq), \
267 .hw_value = (_freq), \
268 .max_power = 20, \
269 }
270
271 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
272 CHAN2G(2412), /* Channel 1 */
273 CHAN2G(2417), /* Channel 2 */
274 CHAN2G(2422), /* Channel 3 */
275 CHAN2G(2427), /* Channel 4 */
276 CHAN2G(2432), /* Channel 5 */
277 CHAN2G(2437), /* Channel 6 */
278 CHAN2G(2442), /* Channel 7 */
279 CHAN2G(2447), /* Channel 8 */
280 CHAN2G(2452), /* Channel 9 */
281 CHAN2G(2457), /* Channel 10 */
282 CHAN2G(2462), /* Channel 11 */
283 CHAN2G(2467), /* Channel 12 */
284 CHAN2G(2472), /* Channel 13 */
285 CHAN2G(2484), /* Channel 14 */
286 };
287
288 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
289 CHAN5G(5180), /* Channel 36 */
290 CHAN5G(5200), /* Channel 40 */
291 CHAN5G(5220), /* Channel 44 */
292 CHAN5G(5240), /* Channel 48 */
293
294 CHAN5G(5260), /* Channel 52 */
295 CHAN5G(5280), /* Channel 56 */
296 CHAN5G(5300), /* Channel 60 */
297 CHAN5G(5320), /* Channel 64 */
298
299 CHAN5G(5500), /* Channel 100 */
300 CHAN5G(5520), /* Channel 104 */
301 CHAN5G(5540), /* Channel 108 */
302 CHAN5G(5560), /* Channel 112 */
303 CHAN5G(5580), /* Channel 116 */
304 CHAN5G(5600), /* Channel 120 */
305 CHAN5G(5620), /* Channel 124 */
306 CHAN5G(5640), /* Channel 128 */
307 CHAN5G(5660), /* Channel 132 */
308 CHAN5G(5680), /* Channel 136 */
309 CHAN5G(5700), /* Channel 140 */
310
311 CHAN5G(5745), /* Channel 149 */
312 CHAN5G(5765), /* Channel 153 */
313 CHAN5G(5785), /* Channel 157 */
314 CHAN5G(5805), /* Channel 161 */
315 CHAN5G(5825), /* Channel 165 */
316 };
317
318 static const struct ieee80211_rate hwsim_rates[] = {
319 { .bitrate = 10 },
320 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
321 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
322 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
323 { .bitrate = 60 },
324 { .bitrate = 90 },
325 { .bitrate = 120 },
326 { .bitrate = 180 },
327 { .bitrate = 240 },
328 { .bitrate = 360 },
329 { .bitrate = 480 },
330 { .bitrate = 540 }
331 };
332
333 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
334 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
335 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
336 BIT(NL80211_IFTYPE_P2P_CLIENT) |
337 #ifdef CONFIG_MAC80211_MESH
338 BIT(NL80211_IFTYPE_MESH_POINT) |
339 #endif
340 BIT(NL80211_IFTYPE_AP) |
341 BIT(NL80211_IFTYPE_P2P_GO) },
342 /* must be last, see hwsim_if_comb */
343 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
344 };
345
346 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
347 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
348 };
349
350 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
351 {
352 .limits = hwsim_if_limits,
353 /* remove the last entry which is P2P_DEVICE */
354 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
355 .max_interfaces = 2048,
356 .num_different_channels = 1,
357 },
358 {
359 .limits = hwsim_if_dfs_limits,
360 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
361 .max_interfaces = 8,
362 .num_different_channels = 1,
363 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
364 BIT(NL80211_CHAN_WIDTH_20) |
365 BIT(NL80211_CHAN_WIDTH_40) |
366 BIT(NL80211_CHAN_WIDTH_80) |
367 BIT(NL80211_CHAN_WIDTH_160),
368 }
369 };
370
371 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
372 {
373 .limits = hwsim_if_limits,
374 .n_limits = ARRAY_SIZE(hwsim_if_limits),
375 .max_interfaces = 2048,
376 .num_different_channels = 1,
377 },
378 {
379 .limits = hwsim_if_dfs_limits,
380 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
381 .max_interfaces = 8,
382 .num_different_channels = 1,
383 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
384 BIT(NL80211_CHAN_WIDTH_20) |
385 BIT(NL80211_CHAN_WIDTH_40) |
386 BIT(NL80211_CHAN_WIDTH_80) |
387 BIT(NL80211_CHAN_WIDTH_160),
388 }
389 };
390
391 static spinlock_t hwsim_radio_lock;
392 static struct list_head hwsim_radios;
393 static int hwsim_radio_idx;
394
395 static struct platform_driver mac80211_hwsim_driver = {
396 .driver = {
397 .name = "mac80211_hwsim",
398 },
399 };
400
401 struct mac80211_hwsim_data {
402 struct list_head list;
403 struct ieee80211_hw *hw;
404 struct device *dev;
405 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
406 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
407 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
408 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
409 struct ieee80211_iface_combination if_combination;
410
411 struct mac_address addresses[2];
412 int channels, idx;
413 bool use_chanctx;
414 bool destroy_on_close;
415 struct work_struct destroy_work;
416 u32 portid;
417 char alpha2[2];
418 const struct ieee80211_regdomain *regd;
419
420 struct ieee80211_channel *tmp_chan;
421 struct delayed_work roc_done;
422 struct delayed_work hw_scan;
423 struct cfg80211_scan_request *hw_scan_request;
424 struct ieee80211_vif *hw_scan_vif;
425 int scan_chan_idx;
426 u8 scan_addr[ETH_ALEN];
427
428 struct ieee80211_channel *channel;
429 u64 beacon_int /* beacon interval in us */;
430 unsigned int rx_filter;
431 bool started, idle, scanning;
432 struct mutex mutex;
433 struct tasklet_hrtimer beacon_timer;
434 enum ps_mode {
435 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
436 } ps;
437 bool ps_poll_pending;
438 struct dentry *debugfs;
439
440 struct sk_buff_head pending; /* packets pending */
441 /*
442 * Only radios in the same group can communicate together (the
443 * channel has to match too). Each bit represents a group. A
444 * radio can be in more than one group.
445 */
446 u64 group;
447
448 int power_level;
449
450 /* difference between this hw's clock and the real clock, in usecs */
451 s64 tsf_offset;
452 s64 bcn_delta;
453 /* absolute beacon transmission time. Used to cover up "tx" delay. */
454 u64 abs_bcn_ts;
455
456 /* Stats */
457 u64 tx_pkts;
458 u64 rx_pkts;
459 u64 tx_bytes;
460 u64 rx_bytes;
461 u64 tx_dropped;
462 u64 tx_failed;
463 };
464
465
466 struct hwsim_radiotap_hdr {
467 struct ieee80211_radiotap_header hdr;
468 __le64 rt_tsft;
469 u8 rt_flags;
470 u8 rt_rate;
471 __le16 rt_channel;
472 __le16 rt_chbitmask;
473 } __packed;
474
475 struct hwsim_radiotap_ack_hdr {
476 struct ieee80211_radiotap_header hdr;
477 u8 rt_flags;
478 u8 pad;
479 __le16 rt_channel;
480 __le16 rt_chbitmask;
481 } __packed;
482
483 /* MAC80211_HWSIM netlinf family */
484 static struct genl_family hwsim_genl_family = {
485 .id = GENL_ID_GENERATE,
486 .hdrsize = 0,
487 .name = "MAC80211_HWSIM",
488 .version = 1,
489 .maxattr = HWSIM_ATTR_MAX,
490 };
491
492 enum hwsim_multicast_groups {
493 HWSIM_MCGRP_CONFIG,
494 };
495
496 static const struct genl_multicast_group hwsim_mcgrps[] = {
497 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
498 };
499
500 /* MAC80211_HWSIM netlink policy */
501
502 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
503 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
504 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
505 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
506 .len = IEEE80211_MAX_DATA_LEN },
507 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
508 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
509 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
510 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
511 .len = IEEE80211_TX_MAX_RATES *
512 sizeof(struct hwsim_tx_rate)},
513 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
514 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
515 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
516 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
517 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
518 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
519 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
520 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
521 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
522 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
523 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
524 };
525
526 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
527 struct sk_buff *skb,
528 struct ieee80211_channel *chan);
529
530 /* sysfs attributes */
531 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
532 {
533 struct mac80211_hwsim_data *data = dat;
534 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
535 struct sk_buff *skb;
536 struct ieee80211_pspoll *pspoll;
537
538 if (!vp->assoc)
539 return;
540
541 wiphy_debug(data->hw->wiphy,
542 "%s: send PS-Poll to %pM for aid %d\n",
543 __func__, vp->bssid, vp->aid);
544
545 skb = dev_alloc_skb(sizeof(*pspoll));
546 if (!skb)
547 return;
548 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
549 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
550 IEEE80211_STYPE_PSPOLL |
551 IEEE80211_FCTL_PM);
552 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
553 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
554 memcpy(pspoll->ta, mac, ETH_ALEN);
555
556 rcu_read_lock();
557 mac80211_hwsim_tx_frame(data->hw, skb,
558 rcu_dereference(vif->chanctx_conf)->def.chan);
559 rcu_read_unlock();
560 }
561
562 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
563 struct ieee80211_vif *vif, int ps)
564 {
565 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
566 struct sk_buff *skb;
567 struct ieee80211_hdr *hdr;
568
569 if (!vp->assoc)
570 return;
571
572 wiphy_debug(data->hw->wiphy,
573 "%s: send data::nullfunc to %pM ps=%d\n",
574 __func__, vp->bssid, ps);
575
576 skb = dev_alloc_skb(sizeof(*hdr));
577 if (!skb)
578 return;
579 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
580 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
581 IEEE80211_STYPE_NULLFUNC |
582 (ps ? IEEE80211_FCTL_PM : 0));
583 hdr->duration_id = cpu_to_le16(0);
584 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
585 memcpy(hdr->addr2, mac, ETH_ALEN);
586 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
587
588 rcu_read_lock();
589 mac80211_hwsim_tx_frame(data->hw, skb,
590 rcu_dereference(vif->chanctx_conf)->def.chan);
591 rcu_read_unlock();
592 }
593
594
595 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
596 struct ieee80211_vif *vif)
597 {
598 struct mac80211_hwsim_data *data = dat;
599 hwsim_send_nullfunc(data, mac, vif, 1);
600 }
601
602 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
603 struct ieee80211_vif *vif)
604 {
605 struct mac80211_hwsim_data *data = dat;
606 hwsim_send_nullfunc(data, mac, vif, 0);
607 }
608
609 static int hwsim_fops_ps_read(void *dat, u64 *val)
610 {
611 struct mac80211_hwsim_data *data = dat;
612 *val = data->ps;
613 return 0;
614 }
615
616 static int hwsim_fops_ps_write(void *dat, u64 val)
617 {
618 struct mac80211_hwsim_data *data = dat;
619 enum ps_mode old_ps;
620
621 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
622 val != PS_MANUAL_POLL)
623 return -EINVAL;
624
625 old_ps = data->ps;
626 data->ps = val;
627
628 local_bh_disable();
629 if (val == PS_MANUAL_POLL) {
630 ieee80211_iterate_active_interfaces_atomic(
631 data->hw, IEEE80211_IFACE_ITER_NORMAL,
632 hwsim_send_ps_poll, data);
633 data->ps_poll_pending = true;
634 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
635 ieee80211_iterate_active_interfaces_atomic(
636 data->hw, IEEE80211_IFACE_ITER_NORMAL,
637 hwsim_send_nullfunc_ps, data);
638 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
639 ieee80211_iterate_active_interfaces_atomic(
640 data->hw, IEEE80211_IFACE_ITER_NORMAL,
641 hwsim_send_nullfunc_no_ps, data);
642 }
643 local_bh_enable();
644
645 return 0;
646 }
647
648 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
649 "%llu\n");
650
651 static int hwsim_write_simulate_radar(void *dat, u64 val)
652 {
653 struct mac80211_hwsim_data *data = dat;
654
655 ieee80211_radar_detected(data->hw);
656
657 return 0;
658 }
659
660 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
661 hwsim_write_simulate_radar, "%llu\n");
662
663 static int hwsim_fops_group_read(void *dat, u64 *val)
664 {
665 struct mac80211_hwsim_data *data = dat;
666 *val = data->group;
667 return 0;
668 }
669
670 static int hwsim_fops_group_write(void *dat, u64 val)
671 {
672 struct mac80211_hwsim_data *data = dat;
673 data->group = val;
674 return 0;
675 }
676
677 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
678 hwsim_fops_group_read, hwsim_fops_group_write,
679 "%llx\n");
680
681 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
682 struct net_device *dev)
683 {
684 /* TODO: allow packet injection */
685 dev_kfree_skb(skb);
686 return NETDEV_TX_OK;
687 }
688
689 static inline u64 mac80211_hwsim_get_tsf_raw(void)
690 {
691 return ktime_to_us(ktime_get_real());
692 }
693
694 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
695 {
696 u64 now = mac80211_hwsim_get_tsf_raw();
697 return cpu_to_le64(now + data->tsf_offset);
698 }
699
700 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
701 struct ieee80211_vif *vif)
702 {
703 struct mac80211_hwsim_data *data = hw->priv;
704 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
705 }
706
707 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
708 struct ieee80211_vif *vif, u64 tsf)
709 {
710 struct mac80211_hwsim_data *data = hw->priv;
711 u64 now = mac80211_hwsim_get_tsf(hw, vif);
712 u32 bcn_int = data->beacon_int;
713 u64 delta = abs64(tsf - now);
714
715 /* adjust after beaconing with new timestamp at old TBTT */
716 if (tsf > now) {
717 data->tsf_offset += delta;
718 data->bcn_delta = do_div(delta, bcn_int);
719 } else {
720 data->tsf_offset -= delta;
721 data->bcn_delta = -do_div(delta, bcn_int);
722 }
723 }
724
725 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
726 struct sk_buff *tx_skb,
727 struct ieee80211_channel *chan)
728 {
729 struct mac80211_hwsim_data *data = hw->priv;
730 struct sk_buff *skb;
731 struct hwsim_radiotap_hdr *hdr;
732 u16 flags;
733 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
734 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
735
736 if (!netif_running(hwsim_mon))
737 return;
738
739 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
740 if (skb == NULL)
741 return;
742
743 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
744 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
745 hdr->hdr.it_pad = 0;
746 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
747 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
748 (1 << IEEE80211_RADIOTAP_RATE) |
749 (1 << IEEE80211_RADIOTAP_TSFT) |
750 (1 << IEEE80211_RADIOTAP_CHANNEL));
751 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
752 hdr->rt_flags = 0;
753 hdr->rt_rate = txrate->bitrate / 5;
754 hdr->rt_channel = cpu_to_le16(chan->center_freq);
755 flags = IEEE80211_CHAN_2GHZ;
756 if (txrate->flags & IEEE80211_RATE_ERP_G)
757 flags |= IEEE80211_CHAN_OFDM;
758 else
759 flags |= IEEE80211_CHAN_CCK;
760 hdr->rt_chbitmask = cpu_to_le16(flags);
761
762 skb->dev = hwsim_mon;
763 skb_set_mac_header(skb, 0);
764 skb->ip_summed = CHECKSUM_UNNECESSARY;
765 skb->pkt_type = PACKET_OTHERHOST;
766 skb->protocol = htons(ETH_P_802_2);
767 memset(skb->cb, 0, sizeof(skb->cb));
768 netif_rx(skb);
769 }
770
771
772 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
773 const u8 *addr)
774 {
775 struct sk_buff *skb;
776 struct hwsim_radiotap_ack_hdr *hdr;
777 u16 flags;
778 struct ieee80211_hdr *hdr11;
779
780 if (!netif_running(hwsim_mon))
781 return;
782
783 skb = dev_alloc_skb(100);
784 if (skb == NULL)
785 return;
786
787 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
788 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
789 hdr->hdr.it_pad = 0;
790 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
791 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
792 (1 << IEEE80211_RADIOTAP_CHANNEL));
793 hdr->rt_flags = 0;
794 hdr->pad = 0;
795 hdr->rt_channel = cpu_to_le16(chan->center_freq);
796 flags = IEEE80211_CHAN_2GHZ;
797 hdr->rt_chbitmask = cpu_to_le16(flags);
798
799 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
800 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
801 IEEE80211_STYPE_ACK);
802 hdr11->duration_id = cpu_to_le16(0);
803 memcpy(hdr11->addr1, addr, ETH_ALEN);
804
805 skb->dev = hwsim_mon;
806 skb_set_mac_header(skb, 0);
807 skb->ip_summed = CHECKSUM_UNNECESSARY;
808 skb->pkt_type = PACKET_OTHERHOST;
809 skb->protocol = htons(ETH_P_802_2);
810 memset(skb->cb, 0, sizeof(skb->cb));
811 netif_rx(skb);
812 }
813
814 struct mac80211_hwsim_addr_match_data {
815 u8 addr[ETH_ALEN];
816 bool ret;
817 };
818
819 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
820 struct ieee80211_vif *vif)
821 {
822 struct mac80211_hwsim_addr_match_data *md = data;
823
824 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
825 md->ret = true;
826 }
827
828 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
829 const u8 *addr)
830 {
831 struct mac80211_hwsim_addr_match_data md = {
832 .ret = false,
833 };
834
835 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
836 return true;
837
838 memcpy(md.addr, addr, ETH_ALEN);
839
840 ieee80211_iterate_active_interfaces_atomic(data->hw,
841 IEEE80211_IFACE_ITER_NORMAL,
842 mac80211_hwsim_addr_iter,
843 &md);
844
845 return md.ret;
846 }
847
848 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
849 struct sk_buff *skb)
850 {
851 switch (data->ps) {
852 case PS_DISABLED:
853 return true;
854 case PS_ENABLED:
855 return false;
856 case PS_AUTO_POLL:
857 /* TODO: accept (some) Beacons by default and other frames only
858 * if pending PS-Poll has been sent */
859 return true;
860 case PS_MANUAL_POLL:
861 /* Allow unicast frames to own address if there is a pending
862 * PS-Poll */
863 if (data->ps_poll_pending &&
864 mac80211_hwsim_addr_match(data, skb->data + 4)) {
865 data->ps_poll_pending = false;
866 return true;
867 }
868 return false;
869 }
870
871 return true;
872 }
873
874 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
875 struct sk_buff *my_skb,
876 int dst_portid)
877 {
878 struct sk_buff *skb;
879 struct mac80211_hwsim_data *data = hw->priv;
880 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
881 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
882 void *msg_head;
883 unsigned int hwsim_flags = 0;
884 int i;
885 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
886
887 if (data->ps != PS_DISABLED)
888 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
889 /* If the queue contains MAX_QUEUE skb's drop some */
890 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
891 /* Droping until WARN_QUEUE level */
892 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
893 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
894 data->tx_dropped++;
895 }
896 }
897
898 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
899 if (skb == NULL)
900 goto nla_put_failure;
901
902 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
903 HWSIM_CMD_FRAME);
904 if (msg_head == NULL) {
905 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
906 goto nla_put_failure;
907 }
908
909 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER, ETH_ALEN, hdr->addr2))
910 goto nla_put_failure;
911
912 /* We get the skb->data */
913 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
914 goto nla_put_failure;
915
916 /* We get the flags for this transmission, and we translate them to
917 wmediumd flags */
918
919 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
920 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
921
922 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
923 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
924
925 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
926 goto nla_put_failure;
927
928 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
929 goto nla_put_failure;
930
931 /* We get the tx control (rate and retries) info*/
932
933 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
934 tx_attempts[i].idx = info->status.rates[i].idx;
935 tx_attempts[i].count = info->status.rates[i].count;
936 }
937
938 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
939 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
940 tx_attempts))
941 goto nla_put_failure;
942
943 /* We create a cookie to identify this skb */
944 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
945 goto nla_put_failure;
946
947 genlmsg_end(skb, msg_head);
948 genlmsg_unicast(&init_net, skb, dst_portid);
949
950 /* Enqueue the packet */
951 skb_queue_tail(&data->pending, my_skb);
952 data->tx_pkts++;
953 data->tx_bytes += my_skb->len;
954 return;
955
956 nla_put_failure:
957 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
958 ieee80211_free_txskb(hw, my_skb);
959 data->tx_failed++;
960 }
961
962 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
963 struct ieee80211_channel *c2)
964 {
965 if (!c1 || !c2)
966 return false;
967
968 return c1->center_freq == c2->center_freq;
969 }
970
971 struct tx_iter_data {
972 struct ieee80211_channel *channel;
973 bool receive;
974 };
975
976 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
977 struct ieee80211_vif *vif)
978 {
979 struct tx_iter_data *data = _data;
980
981 if (!vif->chanctx_conf)
982 return;
983
984 if (!hwsim_chans_compat(data->channel,
985 rcu_dereference(vif->chanctx_conf)->def.chan))
986 return;
987
988 data->receive = true;
989 }
990
991 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
992 {
993 /*
994 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
995 * e.g. like this:
996 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
997 * (but you should use a valid OUI, not that)
998 *
999 * If anyone wants to 'donate' a radiotap OUI/subns code
1000 * please send a patch removing this #ifdef and changing
1001 * the values accordingly.
1002 */
1003 #ifdef HWSIM_RADIOTAP_OUI
1004 struct ieee80211_vendor_radiotap *rtap;
1005
1006 /*
1007 * Note that this code requires the headroom in the SKB
1008 * that was allocated earlier.
1009 */
1010 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1011 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1012 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1013 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1014 rtap->subns = 127;
1015
1016 /*
1017 * Radiotap vendor namespaces can (and should) also be
1018 * split into fields by using the standard radiotap
1019 * presence bitmap mechanism. Use just BIT(0) here for
1020 * the presence bitmap.
1021 */
1022 rtap->present = BIT(0);
1023 /* We have 8 bytes of (dummy) data */
1024 rtap->len = 8;
1025 /* For testing, also require it to be aligned */
1026 rtap->align = 8;
1027 /* And also test that padding works, 4 bytes */
1028 rtap->pad = 4;
1029 /* push the data */
1030 memcpy(rtap->data, "ABCDEFGH", 8);
1031 /* make sure to clear padding, mac80211 doesn't */
1032 memset(rtap->data + 8, 0, 4);
1033
1034 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1035 #endif
1036 }
1037
1038 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1039 struct sk_buff *skb,
1040 struct ieee80211_channel *chan)
1041 {
1042 struct mac80211_hwsim_data *data = hw->priv, *data2;
1043 bool ack = false;
1044 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1045 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1046 struct ieee80211_rx_status rx_status;
1047 u64 now;
1048
1049 memset(&rx_status, 0, sizeof(rx_status));
1050 rx_status.flag |= RX_FLAG_MACTIME_START;
1051 rx_status.freq = chan->center_freq;
1052 rx_status.band = chan->band;
1053 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1054 rx_status.rate_idx =
1055 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1056 rx_status.vht_nss =
1057 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1058 rx_status.flag |= RX_FLAG_VHT;
1059 } else {
1060 rx_status.rate_idx = info->control.rates[0].idx;
1061 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1062 rx_status.flag |= RX_FLAG_HT;
1063 }
1064 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1065 rx_status.flag |= RX_FLAG_40MHZ;
1066 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1067 rx_status.flag |= RX_FLAG_SHORT_GI;
1068 /* TODO: simulate real signal strength (and optional packet loss) */
1069 rx_status.signal = data->power_level - 50;
1070
1071 if (data->ps != PS_DISABLED)
1072 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1073
1074 /* release the skb's source info */
1075 skb_orphan(skb);
1076 skb_dst_drop(skb);
1077 skb->mark = 0;
1078 secpath_reset(skb);
1079 nf_reset(skb);
1080
1081 /*
1082 * Get absolute mactime here so all HWs RX at the "same time", and
1083 * absolute TX time for beacon mactime so the timestamp matches.
1084 * Giving beacons a different mactime than non-beacons looks messy, but
1085 * it helps the Toffset be exact and a ~10us mactime discrepancy
1086 * probably doesn't really matter.
1087 */
1088 if (ieee80211_is_beacon(hdr->frame_control) ||
1089 ieee80211_is_probe_resp(hdr->frame_control))
1090 now = data->abs_bcn_ts;
1091 else
1092 now = mac80211_hwsim_get_tsf_raw();
1093
1094 /* Copy skb to all enabled radios that are on the current frequency */
1095 spin_lock(&hwsim_radio_lock);
1096 list_for_each_entry(data2, &hwsim_radios, list) {
1097 struct sk_buff *nskb;
1098 struct tx_iter_data tx_iter_data = {
1099 .receive = false,
1100 .channel = chan,
1101 };
1102
1103 if (data == data2)
1104 continue;
1105
1106 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1107 !hwsim_ps_rx_ok(data2, skb))
1108 continue;
1109
1110 if (!(data->group & data2->group))
1111 continue;
1112
1113 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1114 !hwsim_chans_compat(chan, data2->channel)) {
1115 ieee80211_iterate_active_interfaces_atomic(
1116 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1117 mac80211_hwsim_tx_iter, &tx_iter_data);
1118 if (!tx_iter_data.receive)
1119 continue;
1120 }
1121
1122 /*
1123 * reserve some space for our vendor and the normal
1124 * radiotap header, since we're copying anyway
1125 */
1126 if (skb->len < PAGE_SIZE && paged_rx) {
1127 struct page *page = alloc_page(GFP_ATOMIC);
1128
1129 if (!page)
1130 continue;
1131
1132 nskb = dev_alloc_skb(128);
1133 if (!nskb) {
1134 __free_page(page);
1135 continue;
1136 }
1137
1138 memcpy(page_address(page), skb->data, skb->len);
1139 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1140 } else {
1141 nskb = skb_copy(skb, GFP_ATOMIC);
1142 if (!nskb)
1143 continue;
1144 }
1145
1146 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1147 ack = true;
1148
1149 rx_status.mactime = now + data2->tsf_offset;
1150
1151 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1152
1153 mac80211_hwsim_add_vendor_rtap(nskb);
1154
1155 data2->rx_pkts++;
1156 data2->rx_bytes += nskb->len;
1157 ieee80211_rx_irqsafe(data2->hw, nskb);
1158 }
1159 spin_unlock(&hwsim_radio_lock);
1160
1161 return ack;
1162 }
1163
1164 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1165 struct ieee80211_tx_control *control,
1166 struct sk_buff *skb)
1167 {
1168 struct mac80211_hwsim_data *data = hw->priv;
1169 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1170 struct ieee80211_chanctx_conf *chanctx_conf;
1171 struct ieee80211_channel *channel;
1172 bool ack;
1173 u32 _portid;
1174
1175 if (WARN_ON(skb->len < 10)) {
1176 /* Should not happen; just a sanity check for addr1 use */
1177 ieee80211_free_txskb(hw, skb);
1178 return;
1179 }
1180
1181 if (!data->use_chanctx) {
1182 channel = data->channel;
1183 } else if (txi->hw_queue == 4) {
1184 channel = data->tmp_chan;
1185 } else {
1186 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1187 if (chanctx_conf)
1188 channel = chanctx_conf->def.chan;
1189 else
1190 channel = NULL;
1191 }
1192
1193 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1194 ieee80211_free_txskb(hw, skb);
1195 return;
1196 }
1197
1198 if (data->idle && !data->tmp_chan) {
1199 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1200 ieee80211_free_txskb(hw, skb);
1201 return;
1202 }
1203
1204 if (txi->control.vif)
1205 hwsim_check_magic(txi->control.vif);
1206 if (control->sta)
1207 hwsim_check_sta_magic(control->sta);
1208
1209 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1210 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1211 txi->control.rates,
1212 ARRAY_SIZE(txi->control.rates));
1213
1214 txi->rate_driver_data[0] = channel;
1215 mac80211_hwsim_monitor_rx(hw, skb, channel);
1216
1217 /* wmediumd mode check */
1218 _portid = ACCESS_ONCE(wmediumd_portid);
1219
1220 if (_portid)
1221 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1222
1223 /* NO wmediumd detected, perfect medium simulation */
1224 data->tx_pkts++;
1225 data->tx_bytes += skb->len;
1226 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1227
1228 if (ack && skb->len >= 16) {
1229 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1230 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1231 }
1232
1233 ieee80211_tx_info_clear_status(txi);
1234
1235 /* frame was transmitted at most favorable rate at first attempt */
1236 txi->control.rates[0].count = 1;
1237 txi->control.rates[1].idx = -1;
1238
1239 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1240 txi->flags |= IEEE80211_TX_STAT_ACK;
1241 ieee80211_tx_status_irqsafe(hw, skb);
1242 }
1243
1244
1245 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1246 {
1247 struct mac80211_hwsim_data *data = hw->priv;
1248 wiphy_debug(hw->wiphy, "%s\n", __func__);
1249 data->started = true;
1250 return 0;
1251 }
1252
1253
1254 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1255 {
1256 struct mac80211_hwsim_data *data = hw->priv;
1257 data->started = false;
1258 tasklet_hrtimer_cancel(&data->beacon_timer);
1259 wiphy_debug(hw->wiphy, "%s\n", __func__);
1260 }
1261
1262
1263 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1264 struct ieee80211_vif *vif)
1265 {
1266 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1267 __func__, ieee80211_vif_type_p2p(vif),
1268 vif->addr);
1269 hwsim_set_magic(vif);
1270
1271 vif->cab_queue = 0;
1272 vif->hw_queue[IEEE80211_AC_VO] = 0;
1273 vif->hw_queue[IEEE80211_AC_VI] = 1;
1274 vif->hw_queue[IEEE80211_AC_BE] = 2;
1275 vif->hw_queue[IEEE80211_AC_BK] = 3;
1276
1277 return 0;
1278 }
1279
1280
1281 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1282 struct ieee80211_vif *vif,
1283 enum nl80211_iftype newtype,
1284 bool newp2p)
1285 {
1286 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1287 wiphy_debug(hw->wiphy,
1288 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1289 __func__, ieee80211_vif_type_p2p(vif),
1290 newtype, vif->addr);
1291 hwsim_check_magic(vif);
1292
1293 /*
1294 * interface may change from non-AP to AP in
1295 * which case this needs to be set up again
1296 */
1297 vif->cab_queue = 0;
1298
1299 return 0;
1300 }
1301
1302 static void mac80211_hwsim_remove_interface(
1303 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1304 {
1305 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1306 __func__, ieee80211_vif_type_p2p(vif),
1307 vif->addr);
1308 hwsim_check_magic(vif);
1309 hwsim_clear_magic(vif);
1310 }
1311
1312 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1313 struct sk_buff *skb,
1314 struct ieee80211_channel *chan)
1315 {
1316 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1317
1318 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1319 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1320 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1321 txi->control.rates,
1322 ARRAY_SIZE(txi->control.rates));
1323 }
1324
1325 mac80211_hwsim_monitor_rx(hw, skb, chan);
1326
1327 if (_pid)
1328 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1329
1330 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1331 dev_kfree_skb(skb);
1332 }
1333
1334 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1335 struct ieee80211_vif *vif)
1336 {
1337 struct mac80211_hwsim_data *data = arg;
1338 struct ieee80211_hw *hw = data->hw;
1339 struct ieee80211_tx_info *info;
1340 struct ieee80211_rate *txrate;
1341 struct ieee80211_mgmt *mgmt;
1342 struct sk_buff *skb;
1343
1344 hwsim_check_magic(vif);
1345
1346 if (vif->type != NL80211_IFTYPE_AP &&
1347 vif->type != NL80211_IFTYPE_MESH_POINT &&
1348 vif->type != NL80211_IFTYPE_ADHOC)
1349 return;
1350
1351 skb = ieee80211_beacon_get(hw, vif);
1352 if (skb == NULL)
1353 return;
1354 info = IEEE80211_SKB_CB(skb);
1355 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1356 ieee80211_get_tx_rates(vif, NULL, skb,
1357 info->control.rates,
1358 ARRAY_SIZE(info->control.rates));
1359
1360 txrate = ieee80211_get_tx_rate(hw, info);
1361
1362 mgmt = (struct ieee80211_mgmt *) skb->data;
1363 /* fake header transmission time */
1364 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1365 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1366 data->tsf_offset +
1367 24 * 8 * 10 / txrate->bitrate);
1368
1369 mac80211_hwsim_tx_frame(hw, skb,
1370 rcu_dereference(vif->chanctx_conf)->def.chan);
1371
1372 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1373 ieee80211_csa_finish(vif);
1374 }
1375
1376 static enum hrtimer_restart
1377 mac80211_hwsim_beacon(struct hrtimer *timer)
1378 {
1379 struct mac80211_hwsim_data *data =
1380 container_of(timer, struct mac80211_hwsim_data,
1381 beacon_timer.timer);
1382 struct ieee80211_hw *hw = data->hw;
1383 u64 bcn_int = data->beacon_int;
1384 ktime_t next_bcn;
1385
1386 if (!data->started)
1387 goto out;
1388
1389 ieee80211_iterate_active_interfaces_atomic(
1390 hw, IEEE80211_IFACE_ITER_NORMAL,
1391 mac80211_hwsim_beacon_tx, data);
1392
1393 /* beacon at new TBTT + beacon interval */
1394 if (data->bcn_delta) {
1395 bcn_int -= data->bcn_delta;
1396 data->bcn_delta = 0;
1397 }
1398
1399 next_bcn = ktime_add(hrtimer_get_expires(timer),
1400 ns_to_ktime(bcn_int * 1000));
1401 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1402 out:
1403 return HRTIMER_NORESTART;
1404 }
1405
1406 static const char * const hwsim_chanwidths[] = {
1407 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1408 [NL80211_CHAN_WIDTH_20] = "ht20",
1409 [NL80211_CHAN_WIDTH_40] = "ht40",
1410 [NL80211_CHAN_WIDTH_80] = "vht80",
1411 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1412 [NL80211_CHAN_WIDTH_160] = "vht160",
1413 };
1414
1415 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1416 {
1417 struct mac80211_hwsim_data *data = hw->priv;
1418 struct ieee80211_conf *conf = &hw->conf;
1419 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1420 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1421 [IEEE80211_SMPS_OFF] = "off",
1422 [IEEE80211_SMPS_STATIC] = "static",
1423 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1424 };
1425
1426 if (conf->chandef.chan)
1427 wiphy_debug(hw->wiphy,
1428 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1429 __func__,
1430 conf->chandef.chan->center_freq,
1431 conf->chandef.center_freq1,
1432 conf->chandef.center_freq2,
1433 hwsim_chanwidths[conf->chandef.width],
1434 !!(conf->flags & IEEE80211_CONF_IDLE),
1435 !!(conf->flags & IEEE80211_CONF_PS),
1436 smps_modes[conf->smps_mode]);
1437 else
1438 wiphy_debug(hw->wiphy,
1439 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1440 __func__,
1441 !!(conf->flags & IEEE80211_CONF_IDLE),
1442 !!(conf->flags & IEEE80211_CONF_PS),
1443 smps_modes[conf->smps_mode]);
1444
1445 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1446
1447 data->channel = conf->chandef.chan;
1448
1449 WARN_ON(data->channel && data->use_chanctx);
1450
1451 data->power_level = conf->power_level;
1452 if (!data->started || !data->beacon_int)
1453 tasklet_hrtimer_cancel(&data->beacon_timer);
1454 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1455 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1456 u32 bcn_int = data->beacon_int;
1457 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1458
1459 tasklet_hrtimer_start(&data->beacon_timer,
1460 ns_to_ktime(until_tbtt * 1000),
1461 HRTIMER_MODE_REL);
1462 }
1463
1464 return 0;
1465 }
1466
1467
1468 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1469 unsigned int changed_flags,
1470 unsigned int *total_flags,u64 multicast)
1471 {
1472 struct mac80211_hwsim_data *data = hw->priv;
1473
1474 wiphy_debug(hw->wiphy, "%s\n", __func__);
1475
1476 data->rx_filter = 0;
1477 if (*total_flags & FIF_PROMISC_IN_BSS)
1478 data->rx_filter |= FIF_PROMISC_IN_BSS;
1479 if (*total_flags & FIF_ALLMULTI)
1480 data->rx_filter |= FIF_ALLMULTI;
1481
1482 *total_flags = data->rx_filter;
1483 }
1484
1485 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1486 struct ieee80211_vif *vif)
1487 {
1488 unsigned int *count = data;
1489 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1490
1491 if (vp->bcn_en)
1492 (*count)++;
1493 }
1494
1495 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1496 struct ieee80211_vif *vif,
1497 struct ieee80211_bss_conf *info,
1498 u32 changed)
1499 {
1500 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1501 struct mac80211_hwsim_data *data = hw->priv;
1502
1503 hwsim_check_magic(vif);
1504
1505 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1506 __func__, changed, vif->addr);
1507
1508 if (changed & BSS_CHANGED_BSSID) {
1509 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1510 __func__, info->bssid);
1511 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1512 }
1513
1514 if (changed & BSS_CHANGED_ASSOC) {
1515 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1516 info->assoc, info->aid);
1517 vp->assoc = info->assoc;
1518 vp->aid = info->aid;
1519 }
1520
1521 if (changed & BSS_CHANGED_BEACON_INT) {
1522 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
1523 data->beacon_int = info->beacon_int * 1024;
1524 }
1525
1526 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1527 wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
1528 vp->bcn_en = info->enable_beacon;
1529 if (data->started &&
1530 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1531 info->enable_beacon) {
1532 u64 tsf, until_tbtt;
1533 u32 bcn_int;
1534 if (WARN_ON(!data->beacon_int))
1535 data->beacon_int = 1000 * 1024;
1536 tsf = mac80211_hwsim_get_tsf(hw, vif);
1537 bcn_int = data->beacon_int;
1538 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1539 tasklet_hrtimer_start(&data->beacon_timer,
1540 ns_to_ktime(until_tbtt * 1000),
1541 HRTIMER_MODE_REL);
1542 } else if (!info->enable_beacon) {
1543 unsigned int count = 0;
1544 ieee80211_iterate_active_interfaces_atomic(
1545 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1546 mac80211_hwsim_bcn_en_iter, &count);
1547 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1548 count);
1549 if (count == 0)
1550 tasklet_hrtimer_cancel(&data->beacon_timer);
1551 }
1552 }
1553
1554 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1555 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1556 info->use_cts_prot);
1557 }
1558
1559 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1560 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1561 info->use_short_preamble);
1562 }
1563
1564 if (changed & BSS_CHANGED_ERP_SLOT) {
1565 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1566 }
1567
1568 if (changed & BSS_CHANGED_HT) {
1569 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1570 info->ht_operation_mode);
1571 }
1572
1573 if (changed & BSS_CHANGED_BASIC_RATES) {
1574 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1575 (unsigned long long) info->basic_rates);
1576 }
1577
1578 if (changed & BSS_CHANGED_TXPOWER)
1579 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1580 }
1581
1582 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1583 struct ieee80211_vif *vif,
1584 struct ieee80211_sta *sta)
1585 {
1586 hwsim_check_magic(vif);
1587 hwsim_set_sta_magic(sta);
1588
1589 return 0;
1590 }
1591
1592 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1593 struct ieee80211_vif *vif,
1594 struct ieee80211_sta *sta)
1595 {
1596 hwsim_check_magic(vif);
1597 hwsim_clear_sta_magic(sta);
1598
1599 return 0;
1600 }
1601
1602 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1603 struct ieee80211_vif *vif,
1604 enum sta_notify_cmd cmd,
1605 struct ieee80211_sta *sta)
1606 {
1607 hwsim_check_magic(vif);
1608
1609 switch (cmd) {
1610 case STA_NOTIFY_SLEEP:
1611 case STA_NOTIFY_AWAKE:
1612 /* TODO: make good use of these flags */
1613 break;
1614 default:
1615 WARN(1, "Invalid sta notify: %d\n", cmd);
1616 break;
1617 }
1618 }
1619
1620 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1621 struct ieee80211_sta *sta,
1622 bool set)
1623 {
1624 hwsim_check_sta_magic(sta);
1625 return 0;
1626 }
1627
1628 static int mac80211_hwsim_conf_tx(
1629 struct ieee80211_hw *hw,
1630 struct ieee80211_vif *vif, u16 queue,
1631 const struct ieee80211_tx_queue_params *params)
1632 {
1633 wiphy_debug(hw->wiphy,
1634 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1635 __func__, queue,
1636 params->txop, params->cw_min,
1637 params->cw_max, params->aifs);
1638 return 0;
1639 }
1640
1641 static int mac80211_hwsim_get_survey(
1642 struct ieee80211_hw *hw, int idx,
1643 struct survey_info *survey)
1644 {
1645 struct ieee80211_conf *conf = &hw->conf;
1646
1647 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1648
1649 if (idx != 0)
1650 return -ENOENT;
1651
1652 /* Current channel */
1653 survey->channel = conf->chandef.chan;
1654
1655 /*
1656 * Magically conjured noise level --- this is only ok for simulated hardware.
1657 *
1658 * A real driver which cannot determine the real channel noise MUST NOT
1659 * report any noise, especially not a magically conjured one :-)
1660 */
1661 survey->filled = SURVEY_INFO_NOISE_DBM;
1662 survey->noise = -92;
1663
1664 return 0;
1665 }
1666
1667 #ifdef CONFIG_NL80211_TESTMODE
1668 /*
1669 * This section contains example code for using netlink
1670 * attributes with the testmode command in nl80211.
1671 */
1672
1673 /* These enums need to be kept in sync with userspace */
1674 enum hwsim_testmode_attr {
1675 __HWSIM_TM_ATTR_INVALID = 0,
1676 HWSIM_TM_ATTR_CMD = 1,
1677 HWSIM_TM_ATTR_PS = 2,
1678
1679 /* keep last */
1680 __HWSIM_TM_ATTR_AFTER_LAST,
1681 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1682 };
1683
1684 enum hwsim_testmode_cmd {
1685 HWSIM_TM_CMD_SET_PS = 0,
1686 HWSIM_TM_CMD_GET_PS = 1,
1687 HWSIM_TM_CMD_STOP_QUEUES = 2,
1688 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1689 };
1690
1691 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1692 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1693 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1694 };
1695
1696 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1697 struct ieee80211_vif *vif,
1698 void *data, int len)
1699 {
1700 struct mac80211_hwsim_data *hwsim = hw->priv;
1701 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1702 struct sk_buff *skb;
1703 int err, ps;
1704
1705 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1706 hwsim_testmode_policy);
1707 if (err)
1708 return err;
1709
1710 if (!tb[HWSIM_TM_ATTR_CMD])
1711 return -EINVAL;
1712
1713 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1714 case HWSIM_TM_CMD_SET_PS:
1715 if (!tb[HWSIM_TM_ATTR_PS])
1716 return -EINVAL;
1717 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1718 return hwsim_fops_ps_write(hwsim, ps);
1719 case HWSIM_TM_CMD_GET_PS:
1720 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1721 nla_total_size(sizeof(u32)));
1722 if (!skb)
1723 return -ENOMEM;
1724 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1725 goto nla_put_failure;
1726 return cfg80211_testmode_reply(skb);
1727 case HWSIM_TM_CMD_STOP_QUEUES:
1728 ieee80211_stop_queues(hw);
1729 return 0;
1730 case HWSIM_TM_CMD_WAKE_QUEUES:
1731 ieee80211_wake_queues(hw);
1732 return 0;
1733 default:
1734 return -EOPNOTSUPP;
1735 }
1736
1737 nla_put_failure:
1738 kfree_skb(skb);
1739 return -ENOBUFS;
1740 }
1741 #endif
1742
1743 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1744 struct ieee80211_vif *vif,
1745 enum ieee80211_ampdu_mlme_action action,
1746 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1747 u8 buf_size)
1748 {
1749 switch (action) {
1750 case IEEE80211_AMPDU_TX_START:
1751 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1752 break;
1753 case IEEE80211_AMPDU_TX_STOP_CONT:
1754 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1755 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1756 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1757 break;
1758 case IEEE80211_AMPDU_TX_OPERATIONAL:
1759 break;
1760 case IEEE80211_AMPDU_RX_START:
1761 case IEEE80211_AMPDU_RX_STOP:
1762 break;
1763 default:
1764 return -EOPNOTSUPP;
1765 }
1766
1767 return 0;
1768 }
1769
1770 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1771 struct ieee80211_vif *vif,
1772 u32 queues, bool drop)
1773 {
1774 /* Not implemented, queues only on kernel side */
1775 }
1776
1777 static void hw_scan_work(struct work_struct *work)
1778 {
1779 struct mac80211_hwsim_data *hwsim =
1780 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1781 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1782 int dwell, i;
1783
1784 mutex_lock(&hwsim->mutex);
1785 if (hwsim->scan_chan_idx >= req->n_channels) {
1786 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1787 ieee80211_scan_completed(hwsim->hw, false);
1788 hwsim->hw_scan_request = NULL;
1789 hwsim->hw_scan_vif = NULL;
1790 hwsim->tmp_chan = NULL;
1791 mutex_unlock(&hwsim->mutex);
1792 return;
1793 }
1794
1795 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1796 req->channels[hwsim->scan_chan_idx]->center_freq);
1797
1798 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1799 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1800 !req->n_ssids) {
1801 dwell = 120;
1802 } else {
1803 dwell = 30;
1804 /* send probes */
1805 for (i = 0; i < req->n_ssids; i++) {
1806 struct sk_buff *probe;
1807
1808 probe = ieee80211_probereq_get(hwsim->hw,
1809 hwsim->scan_addr,
1810 req->ssids[i].ssid,
1811 req->ssids[i].ssid_len,
1812 req->ie_len);
1813 if (!probe)
1814 continue;
1815
1816 if (req->ie_len)
1817 memcpy(skb_put(probe, req->ie_len), req->ie,
1818 req->ie_len);
1819
1820 local_bh_disable();
1821 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1822 hwsim->tmp_chan);
1823 local_bh_enable();
1824 }
1825 }
1826 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1827 msecs_to_jiffies(dwell));
1828 hwsim->scan_chan_idx++;
1829 mutex_unlock(&hwsim->mutex);
1830 }
1831
1832 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1833 struct ieee80211_vif *vif,
1834 struct ieee80211_scan_request *hw_req)
1835 {
1836 struct mac80211_hwsim_data *hwsim = hw->priv;
1837 struct cfg80211_scan_request *req = &hw_req->req;
1838
1839 mutex_lock(&hwsim->mutex);
1840 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1841 mutex_unlock(&hwsim->mutex);
1842 return -EBUSY;
1843 }
1844 hwsim->hw_scan_request = req;
1845 hwsim->hw_scan_vif = vif;
1846 hwsim->scan_chan_idx = 0;
1847 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1848 get_random_mask_addr(hwsim->scan_addr,
1849 hw_req->req.mac_addr,
1850 hw_req->req.mac_addr_mask);
1851 else
1852 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1853 mutex_unlock(&hwsim->mutex);
1854
1855 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1856
1857 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1858
1859 return 0;
1860 }
1861
1862 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1863 struct ieee80211_vif *vif)
1864 {
1865 struct mac80211_hwsim_data *hwsim = hw->priv;
1866
1867 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1868
1869 cancel_delayed_work_sync(&hwsim->hw_scan);
1870
1871 mutex_lock(&hwsim->mutex);
1872 ieee80211_scan_completed(hwsim->hw, true);
1873 hwsim->tmp_chan = NULL;
1874 hwsim->hw_scan_request = NULL;
1875 hwsim->hw_scan_vif = NULL;
1876 mutex_unlock(&hwsim->mutex);
1877 }
1878
1879 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1880 struct ieee80211_vif *vif,
1881 const u8 *mac_addr)
1882 {
1883 struct mac80211_hwsim_data *hwsim = hw->priv;
1884
1885 mutex_lock(&hwsim->mutex);
1886
1887 if (hwsim->scanning) {
1888 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1889 goto out;
1890 }
1891
1892 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1893
1894 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1895 hwsim->scanning = true;
1896
1897 out:
1898 mutex_unlock(&hwsim->mutex);
1899 }
1900
1901 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
1902 struct ieee80211_vif *vif)
1903 {
1904 struct mac80211_hwsim_data *hwsim = hw->priv;
1905
1906 mutex_lock(&hwsim->mutex);
1907
1908 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1909 hwsim->scanning = false;
1910 memset(hwsim->scan_addr, 0, ETH_ALEN);
1911
1912 mutex_unlock(&hwsim->mutex);
1913 }
1914
1915 static void hw_roc_done(struct work_struct *work)
1916 {
1917 struct mac80211_hwsim_data *hwsim =
1918 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1919
1920 mutex_lock(&hwsim->mutex);
1921 ieee80211_remain_on_channel_expired(hwsim->hw);
1922 hwsim->tmp_chan = NULL;
1923 mutex_unlock(&hwsim->mutex);
1924
1925 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1926 }
1927
1928 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1929 struct ieee80211_vif *vif,
1930 struct ieee80211_channel *chan,
1931 int duration,
1932 enum ieee80211_roc_type type)
1933 {
1934 struct mac80211_hwsim_data *hwsim = hw->priv;
1935
1936 mutex_lock(&hwsim->mutex);
1937 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1938 mutex_unlock(&hwsim->mutex);
1939 return -EBUSY;
1940 }
1941
1942 hwsim->tmp_chan = chan;
1943 mutex_unlock(&hwsim->mutex);
1944
1945 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1946 chan->center_freq, duration);
1947
1948 ieee80211_ready_on_channel(hw);
1949
1950 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1951 msecs_to_jiffies(duration));
1952 return 0;
1953 }
1954
1955 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1956 {
1957 struct mac80211_hwsim_data *hwsim = hw->priv;
1958
1959 cancel_delayed_work_sync(&hwsim->roc_done);
1960
1961 mutex_lock(&hwsim->mutex);
1962 hwsim->tmp_chan = NULL;
1963 mutex_unlock(&hwsim->mutex);
1964
1965 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1966
1967 return 0;
1968 }
1969
1970 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1971 struct ieee80211_chanctx_conf *ctx)
1972 {
1973 hwsim_set_chanctx_magic(ctx);
1974 wiphy_debug(hw->wiphy,
1975 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1976 ctx->def.chan->center_freq, ctx->def.width,
1977 ctx->def.center_freq1, ctx->def.center_freq2);
1978 return 0;
1979 }
1980
1981 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1982 struct ieee80211_chanctx_conf *ctx)
1983 {
1984 wiphy_debug(hw->wiphy,
1985 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1986 ctx->def.chan->center_freq, ctx->def.width,
1987 ctx->def.center_freq1, ctx->def.center_freq2);
1988 hwsim_check_chanctx_magic(ctx);
1989 hwsim_clear_chanctx_magic(ctx);
1990 }
1991
1992 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1993 struct ieee80211_chanctx_conf *ctx,
1994 u32 changed)
1995 {
1996 hwsim_check_chanctx_magic(ctx);
1997 wiphy_debug(hw->wiphy,
1998 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1999 ctx->def.chan->center_freq, ctx->def.width,
2000 ctx->def.center_freq1, ctx->def.center_freq2);
2001 }
2002
2003 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2004 struct ieee80211_vif *vif,
2005 struct ieee80211_chanctx_conf *ctx)
2006 {
2007 hwsim_check_magic(vif);
2008 hwsim_check_chanctx_magic(ctx);
2009
2010 return 0;
2011 }
2012
2013 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2014 struct ieee80211_vif *vif,
2015 struct ieee80211_chanctx_conf *ctx)
2016 {
2017 hwsim_check_magic(vif);
2018 hwsim_check_chanctx_magic(ctx);
2019 }
2020
2021 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2022 "tx_pkts_nic",
2023 "tx_bytes_nic",
2024 "rx_pkts_nic",
2025 "rx_bytes_nic",
2026 "d_tx_dropped",
2027 "d_tx_failed",
2028 "d_ps_mode",
2029 "d_group",
2030 "d_tx_power",
2031 };
2032
2033 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2034
2035 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2036 struct ieee80211_vif *vif,
2037 u32 sset, u8 *data)
2038 {
2039 if (sset == ETH_SS_STATS)
2040 memcpy(data, *mac80211_hwsim_gstrings_stats,
2041 sizeof(mac80211_hwsim_gstrings_stats));
2042 }
2043
2044 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2045 struct ieee80211_vif *vif, int sset)
2046 {
2047 if (sset == ETH_SS_STATS)
2048 return MAC80211_HWSIM_SSTATS_LEN;
2049 return 0;
2050 }
2051
2052 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2053 struct ieee80211_vif *vif,
2054 struct ethtool_stats *stats, u64 *data)
2055 {
2056 struct mac80211_hwsim_data *ar = hw->priv;
2057 int i = 0;
2058
2059 data[i++] = ar->tx_pkts;
2060 data[i++] = ar->tx_bytes;
2061 data[i++] = ar->rx_pkts;
2062 data[i++] = ar->rx_bytes;
2063 data[i++] = ar->tx_dropped;
2064 data[i++] = ar->tx_failed;
2065 data[i++] = ar->ps;
2066 data[i++] = ar->group;
2067 data[i++] = ar->power_level;
2068
2069 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2070 }
2071
2072 static const struct ieee80211_ops mac80211_hwsim_ops = {
2073 .tx = mac80211_hwsim_tx,
2074 .start = mac80211_hwsim_start,
2075 .stop = mac80211_hwsim_stop,
2076 .add_interface = mac80211_hwsim_add_interface,
2077 .change_interface = mac80211_hwsim_change_interface,
2078 .remove_interface = mac80211_hwsim_remove_interface,
2079 .config = mac80211_hwsim_config,
2080 .configure_filter = mac80211_hwsim_configure_filter,
2081 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2082 .sta_add = mac80211_hwsim_sta_add,
2083 .sta_remove = mac80211_hwsim_sta_remove,
2084 .sta_notify = mac80211_hwsim_sta_notify,
2085 .set_tim = mac80211_hwsim_set_tim,
2086 .conf_tx = mac80211_hwsim_conf_tx,
2087 .get_survey = mac80211_hwsim_get_survey,
2088 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2089 .ampdu_action = mac80211_hwsim_ampdu_action,
2090 .sw_scan_start = mac80211_hwsim_sw_scan,
2091 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2092 .flush = mac80211_hwsim_flush,
2093 .get_tsf = mac80211_hwsim_get_tsf,
2094 .set_tsf = mac80211_hwsim_set_tsf,
2095 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2096 .get_et_stats = mac80211_hwsim_get_et_stats,
2097 .get_et_strings = mac80211_hwsim_get_et_strings,
2098 };
2099
2100 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2101
2102 struct hwsim_new_radio_params {
2103 unsigned int channels;
2104 const char *reg_alpha2;
2105 const struct ieee80211_regdomain *regd;
2106 bool reg_strict;
2107 bool p2p_device;
2108 bool use_chanctx;
2109 bool destroy_on_close;
2110 const char *hwname;
2111 bool no_vif;
2112 };
2113
2114 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2115 struct genl_info *info)
2116 {
2117 if (info)
2118 genl_notify(&hwsim_genl_family, mcast_skb,
2119 genl_info_net(info), info->snd_portid,
2120 HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
2121 else
2122 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2123 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2124 }
2125
2126 static int append_radio_msg(struct sk_buff *skb, int id,
2127 struct hwsim_new_radio_params *param)
2128 {
2129 int ret;
2130
2131 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2132 if (ret < 0)
2133 return ret;
2134
2135 if (param->channels) {
2136 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2137 if (ret < 0)
2138 return ret;
2139 }
2140
2141 if (param->reg_alpha2) {
2142 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2143 param->reg_alpha2);
2144 if (ret < 0)
2145 return ret;
2146 }
2147
2148 if (param->regd) {
2149 int i;
2150
2151 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2152 if (hwsim_world_regdom_custom[i] != param->regd)
2153 continue;
2154
2155 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2156 if (ret < 0)
2157 return ret;
2158 break;
2159 }
2160 }
2161
2162 if (param->reg_strict) {
2163 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2164 if (ret < 0)
2165 return ret;
2166 }
2167
2168 if (param->p2p_device) {
2169 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2170 if (ret < 0)
2171 return ret;
2172 }
2173
2174 if (param->use_chanctx) {
2175 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2176 if (ret < 0)
2177 return ret;
2178 }
2179
2180 if (param->hwname) {
2181 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2182 strlen(param->hwname), param->hwname);
2183 if (ret < 0)
2184 return ret;
2185 }
2186
2187 return 0;
2188 }
2189
2190 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2191 struct hwsim_new_radio_params *param)
2192 {
2193 struct sk_buff *mcast_skb;
2194 void *data;
2195
2196 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2197 if (!mcast_skb)
2198 return;
2199
2200 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2201 HWSIM_CMD_NEW_RADIO);
2202 if (!data)
2203 goto out_err;
2204
2205 if (append_radio_msg(mcast_skb, id, param) < 0)
2206 goto out_err;
2207
2208 genlmsg_end(mcast_skb, data);
2209
2210 hwsim_mcast_config_msg(mcast_skb, info);
2211 return;
2212
2213 out_err:
2214 genlmsg_cancel(mcast_skb, data);
2215 nlmsg_free(mcast_skb);
2216 }
2217
2218 static int mac80211_hwsim_new_radio(struct genl_info *info,
2219 struct hwsim_new_radio_params *param)
2220 {
2221 int err;
2222 u8 addr[ETH_ALEN];
2223 struct mac80211_hwsim_data *data;
2224 struct ieee80211_hw *hw;
2225 enum ieee80211_band band;
2226 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2227 int idx;
2228
2229 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2230 return -EINVAL;
2231
2232 spin_lock_bh(&hwsim_radio_lock);
2233 idx = hwsim_radio_idx++;
2234 spin_unlock_bh(&hwsim_radio_lock);
2235
2236 if (param->use_chanctx)
2237 ops = &mac80211_hwsim_mchan_ops;
2238 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2239 if (!hw) {
2240 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2241 err = -ENOMEM;
2242 goto failed;
2243 }
2244 data = hw->priv;
2245 data->hw = hw;
2246
2247 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2248 if (IS_ERR(data->dev)) {
2249 printk(KERN_DEBUG
2250 "mac80211_hwsim: device_create failed (%ld)\n",
2251 PTR_ERR(data->dev));
2252 err = -ENOMEM;
2253 goto failed_drvdata;
2254 }
2255 data->dev->driver = &mac80211_hwsim_driver.driver;
2256 err = device_bind_driver(data->dev);
2257 if (err != 0) {
2258 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2259 err);
2260 goto failed_bind;
2261 }
2262
2263 skb_queue_head_init(&data->pending);
2264
2265 SET_IEEE80211_DEV(hw, data->dev);
2266 memset(addr, 0, ETH_ALEN);
2267 addr[0] = 0x02;
2268 addr[3] = idx >> 8;
2269 addr[4] = idx;
2270 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2271 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2272 data->addresses[1].addr[0] |= 0x40;
2273 hw->wiphy->n_addresses = 2;
2274 hw->wiphy->addresses = data->addresses;
2275
2276 data->channels = param->channels;
2277 data->use_chanctx = param->use_chanctx;
2278 data->idx = idx;
2279 data->destroy_on_close = param->destroy_on_close;
2280 if (info)
2281 data->portid = info->snd_portid;
2282
2283 if (data->use_chanctx) {
2284 hw->wiphy->max_scan_ssids = 255;
2285 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2286 hw->wiphy->max_remain_on_channel_duration = 1000;
2287 /* For channels > 1 DFS is not allowed */
2288 hw->wiphy->n_iface_combinations = 1;
2289 hw->wiphy->iface_combinations = &data->if_combination;
2290 if (param->p2p_device)
2291 data->if_combination = hwsim_if_comb_p2p_dev[0];
2292 else
2293 data->if_combination = hwsim_if_comb[0];
2294 data->if_combination.num_different_channels = data->channels;
2295 } else if (param->p2p_device) {
2296 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2297 hw->wiphy->n_iface_combinations =
2298 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2299 } else {
2300 hw->wiphy->iface_combinations = hwsim_if_comb;
2301 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2302 }
2303
2304 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2305 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2306
2307 hw->queues = 5;
2308 hw->offchannel_tx_hw_queue = 4;
2309 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2310 BIT(NL80211_IFTYPE_AP) |
2311 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2312 BIT(NL80211_IFTYPE_P2P_GO) |
2313 BIT(NL80211_IFTYPE_ADHOC) |
2314 BIT(NL80211_IFTYPE_MESH_POINT);
2315
2316 if (param->p2p_device)
2317 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2318
2319 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2320 IEEE80211_HW_SIGNAL_DBM |
2321 IEEE80211_HW_AMPDU_AGGREGATION |
2322 IEEE80211_HW_WANT_MONITOR_VIF |
2323 IEEE80211_HW_QUEUE_CONTROL |
2324 IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2325 IEEE80211_HW_CHANCTX_STA_CSA;
2326 if (rctbl)
2327 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2328
2329 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2330 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2331 WIPHY_FLAG_AP_UAPSD |
2332 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2333 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2334 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2335 NL80211_FEATURE_STATIC_SMPS |
2336 NL80211_FEATURE_DYNAMIC_SMPS |
2337 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2338
2339 /* ask mac80211 to reserve space for magic */
2340 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2341 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2342 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2343
2344 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2345 sizeof(hwsim_channels_2ghz));
2346 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2347 sizeof(hwsim_channels_5ghz));
2348 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2349
2350 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2351 struct ieee80211_supported_band *sband = &data->bands[band];
2352 switch (band) {
2353 case IEEE80211_BAND_2GHZ:
2354 sband->channels = data->channels_2ghz;
2355 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2356 sband->bitrates = data->rates;
2357 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2358 break;
2359 case IEEE80211_BAND_5GHZ:
2360 sband->channels = data->channels_5ghz;
2361 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2362 sband->bitrates = data->rates + 4;
2363 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2364 break;
2365 default:
2366 continue;
2367 }
2368
2369 sband->ht_cap.ht_supported = true;
2370 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2371 IEEE80211_HT_CAP_GRN_FLD |
2372 IEEE80211_HT_CAP_SGI_20 |
2373 IEEE80211_HT_CAP_SGI_40 |
2374 IEEE80211_HT_CAP_DSSSCCK40;
2375 sband->ht_cap.ampdu_factor = 0x3;
2376 sband->ht_cap.ampdu_density = 0x6;
2377 memset(&sband->ht_cap.mcs, 0,
2378 sizeof(sband->ht_cap.mcs));
2379 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2380 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2381 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2382
2383 hw->wiphy->bands[band] = sband;
2384
2385 sband->vht_cap.vht_supported = true;
2386 sband->vht_cap.cap =
2387 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2388 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2389 IEEE80211_VHT_CAP_RXLDPC |
2390 IEEE80211_VHT_CAP_SHORT_GI_80 |
2391 IEEE80211_VHT_CAP_SHORT_GI_160 |
2392 IEEE80211_VHT_CAP_TXSTBC |
2393 IEEE80211_VHT_CAP_RXSTBC_1 |
2394 IEEE80211_VHT_CAP_RXSTBC_2 |
2395 IEEE80211_VHT_CAP_RXSTBC_3 |
2396 IEEE80211_VHT_CAP_RXSTBC_4 |
2397 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2398 sband->vht_cap.vht_mcs.rx_mcs_map =
2399 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2400 IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2401 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2402 IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2403 IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2404 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2405 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2406 IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2407 sband->vht_cap.vht_mcs.tx_mcs_map =
2408 sband->vht_cap.vht_mcs.rx_mcs_map;
2409 }
2410
2411 /* By default all radios belong to the first group */
2412 data->group = 1;
2413 mutex_init(&data->mutex);
2414
2415 /* Enable frame retransmissions for lossy channels */
2416 hw->max_rates = 4;
2417 hw->max_rate_tries = 11;
2418
2419 if (param->reg_strict)
2420 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2421 if (param->regd) {
2422 data->regd = param->regd;
2423 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2424 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2425 /* give the regulatory workqueue a chance to run */
2426 schedule_timeout_interruptible(1);
2427 }
2428
2429 if (param->no_vif)
2430 hw->flags |= IEEE80211_HW_NO_AUTO_VIF;
2431
2432 err = ieee80211_register_hw(hw);
2433 if (err < 0) {
2434 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2435 err);
2436 goto failed_hw;
2437 }
2438
2439 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2440
2441 if (param->reg_alpha2) {
2442 data->alpha2[0] = param->reg_alpha2[0];
2443 data->alpha2[1] = param->reg_alpha2[1];
2444 regulatory_hint(hw->wiphy, param->reg_alpha2);
2445 }
2446
2447 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2448 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2449 debugfs_create_file("group", 0666, data->debugfs, data,
2450 &hwsim_fops_group);
2451 if (!data->use_chanctx)
2452 debugfs_create_file("dfs_simulate_radar", 0222,
2453 data->debugfs,
2454 data, &hwsim_simulate_radar);
2455
2456 tasklet_hrtimer_init(&data->beacon_timer,
2457 mac80211_hwsim_beacon,
2458 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2459
2460 spin_lock_bh(&hwsim_radio_lock);
2461 list_add_tail(&data->list, &hwsim_radios);
2462 spin_unlock_bh(&hwsim_radio_lock);
2463
2464 if (idx > 0)
2465 hwsim_mcast_new_radio(idx, info, param);
2466
2467 return idx;
2468
2469 failed_hw:
2470 device_release_driver(data->dev);
2471 failed_bind:
2472 device_unregister(data->dev);
2473 failed_drvdata:
2474 ieee80211_free_hw(hw);
2475 failed:
2476 return err;
2477 }
2478
2479 static void hwsim_mcast_del_radio(int id, const char *hwname,
2480 struct genl_info *info)
2481 {
2482 struct sk_buff *skb;
2483 void *data;
2484 int ret;
2485
2486 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2487 if (!skb)
2488 return;
2489
2490 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2491 HWSIM_CMD_DEL_RADIO);
2492 if (!data)
2493 goto error;
2494
2495 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2496 if (ret < 0)
2497 goto error;
2498
2499 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2500 hwname);
2501 if (ret < 0)
2502 goto error;
2503
2504 genlmsg_end(skb, data);
2505
2506 hwsim_mcast_config_msg(skb, info);
2507
2508 return;
2509
2510 error:
2511 nlmsg_free(skb);
2512 }
2513
2514 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2515 const char *hwname,
2516 struct genl_info *info)
2517 {
2518 hwsim_mcast_del_radio(data->idx, hwname, info);
2519 debugfs_remove_recursive(data->debugfs);
2520 ieee80211_unregister_hw(data->hw);
2521 device_release_driver(data->dev);
2522 device_unregister(data->dev);
2523 ieee80211_free_hw(data->hw);
2524 }
2525
2526 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2527 struct mac80211_hwsim_data *data,
2528 u32 portid, u32 seq,
2529 struct netlink_callback *cb, int flags)
2530 {
2531 void *hdr;
2532 struct hwsim_new_radio_params param = { };
2533 int res = -EMSGSIZE;
2534
2535 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2536 HWSIM_CMD_GET_RADIO);
2537 if (!hdr)
2538 return -EMSGSIZE;
2539
2540 if (cb)
2541 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2542
2543 if (data->alpha2[0] && data->alpha2[1])
2544 param.reg_alpha2 = data->alpha2;
2545
2546 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2547 REGULATORY_STRICT_REG);
2548 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2549 BIT(NL80211_IFTYPE_P2P_DEVICE));
2550 param.use_chanctx = data->use_chanctx;
2551 param.regd = data->regd;
2552 param.channels = data->channels;
2553 param.hwname = wiphy_name(data->hw->wiphy);
2554
2555 res = append_radio_msg(skb, data->idx, &param);
2556 if (res < 0)
2557 goto out_err;
2558
2559 genlmsg_end(skb, hdr);
2560 return 0;
2561
2562 out_err:
2563 genlmsg_cancel(skb, hdr);
2564 return res;
2565 }
2566
2567 static void mac80211_hwsim_free(void)
2568 {
2569 struct mac80211_hwsim_data *data;
2570
2571 spin_lock_bh(&hwsim_radio_lock);
2572 while ((data = list_first_entry_or_null(&hwsim_radios,
2573 struct mac80211_hwsim_data,
2574 list))) {
2575 list_del(&data->list);
2576 spin_unlock_bh(&hwsim_radio_lock);
2577 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2578 NULL);
2579 spin_lock_bh(&hwsim_radio_lock);
2580 }
2581 spin_unlock_bh(&hwsim_radio_lock);
2582 class_destroy(hwsim_class);
2583 }
2584
2585 static const struct net_device_ops hwsim_netdev_ops = {
2586 .ndo_start_xmit = hwsim_mon_xmit,
2587 .ndo_change_mtu = eth_change_mtu,
2588 .ndo_set_mac_address = eth_mac_addr,
2589 .ndo_validate_addr = eth_validate_addr,
2590 };
2591
2592 static void hwsim_mon_setup(struct net_device *dev)
2593 {
2594 dev->netdev_ops = &hwsim_netdev_ops;
2595 dev->destructor = free_netdev;
2596 ether_setup(dev);
2597 dev->tx_queue_len = 0;
2598 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2599 memset(dev->dev_addr, 0, ETH_ALEN);
2600 dev->dev_addr[0] = 0x12;
2601 }
2602
2603 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2604 {
2605 struct mac80211_hwsim_data *data;
2606 bool _found = false;
2607
2608 spin_lock_bh(&hwsim_radio_lock);
2609 list_for_each_entry(data, &hwsim_radios, list) {
2610 if (mac80211_hwsim_addr_match(data, addr)) {
2611 _found = true;
2612 break;
2613 }
2614 }
2615 spin_unlock_bh(&hwsim_radio_lock);
2616
2617 if (!_found)
2618 return NULL;
2619
2620 return data;
2621 }
2622
2623 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2624 struct genl_info *info)
2625 {
2626
2627 struct ieee80211_hdr *hdr;
2628 struct mac80211_hwsim_data *data2;
2629 struct ieee80211_tx_info *txi;
2630 struct hwsim_tx_rate *tx_attempts;
2631 unsigned long ret_skb_ptr;
2632 struct sk_buff *skb, *tmp;
2633 const u8 *src;
2634 unsigned int hwsim_flags;
2635 int i;
2636 bool found = false;
2637
2638 if (info->snd_portid != wmediumd_portid)
2639 return -EINVAL;
2640
2641 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2642 !info->attrs[HWSIM_ATTR_FLAGS] ||
2643 !info->attrs[HWSIM_ATTR_COOKIE] ||
2644 !info->attrs[HWSIM_ATTR_TX_INFO])
2645 goto out;
2646
2647 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2648 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2649 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2650
2651 data2 = get_hwsim_data_ref_from_addr(src);
2652 if (!data2)
2653 goto out;
2654
2655 /* look for the skb matching the cookie passed back from user */
2656 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2657 if ((unsigned long)skb == ret_skb_ptr) {
2658 skb_unlink(skb, &data2->pending);
2659 found = true;
2660 break;
2661 }
2662 }
2663
2664 /* not found */
2665 if (!found)
2666 goto out;
2667
2668 /* Tx info received because the frame was broadcasted on user space,
2669 so we get all the necessary info: tx attempts and skb control buff */
2670
2671 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2672 info->attrs[HWSIM_ATTR_TX_INFO]);
2673
2674 /* now send back TX status */
2675 txi = IEEE80211_SKB_CB(skb);
2676
2677 ieee80211_tx_info_clear_status(txi);
2678
2679 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2680 txi->status.rates[i].idx = tx_attempts[i].idx;
2681 txi->status.rates[i].count = tx_attempts[i].count;
2682 /*txi->status.rates[i].flags = 0;*/
2683 }
2684
2685 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2686
2687 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2688 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2689 if (skb->len >= 16) {
2690 hdr = (struct ieee80211_hdr *) skb->data;
2691 mac80211_hwsim_monitor_ack(data2->channel,
2692 hdr->addr2);
2693 }
2694 txi->flags |= IEEE80211_TX_STAT_ACK;
2695 }
2696 ieee80211_tx_status_irqsafe(data2->hw, skb);
2697 return 0;
2698 out:
2699 return -EINVAL;
2700
2701 }
2702
2703 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2704 struct genl_info *info)
2705 {
2706 struct mac80211_hwsim_data *data2;
2707 struct ieee80211_rx_status rx_status;
2708 const u8 *dst;
2709 int frame_data_len;
2710 void *frame_data;
2711 struct sk_buff *skb = NULL;
2712
2713 if (info->snd_portid != wmediumd_portid)
2714 return -EINVAL;
2715
2716 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2717 !info->attrs[HWSIM_ATTR_FRAME] ||
2718 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2719 !info->attrs[HWSIM_ATTR_SIGNAL])
2720 goto out;
2721
2722 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2723 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2724 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2725
2726 /* Allocate new skb here */
2727 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2728 if (skb == NULL)
2729 goto err;
2730
2731 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2732 goto err;
2733
2734 /* Copy the data */
2735 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2736
2737 data2 = get_hwsim_data_ref_from_addr(dst);
2738 if (!data2)
2739 goto out;
2740
2741 /* check if radio is configured properly */
2742
2743 if (data2->idle || !data2->started)
2744 goto out;
2745
2746 /* A frame is received from user space */
2747 memset(&rx_status, 0, sizeof(rx_status));
2748 /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2749 * packets?
2750 */
2751 rx_status.freq = data2->channel->center_freq;
2752 rx_status.band = data2->channel->band;
2753 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2754 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2755
2756 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2757 data2->rx_pkts++;
2758 data2->rx_bytes += skb->len;
2759 ieee80211_rx_irqsafe(data2->hw, skb);
2760
2761 return 0;
2762 err:
2763 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2764 out:
2765 dev_kfree_skb(skb);
2766 return -EINVAL;
2767 }
2768
2769 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2770 struct genl_info *info)
2771 {
2772 struct mac80211_hwsim_data *data;
2773 int chans = 1;
2774
2775 spin_lock_bh(&hwsim_radio_lock);
2776 list_for_each_entry(data, &hwsim_radios, list)
2777 chans = max(chans, data->channels);
2778 spin_unlock_bh(&hwsim_radio_lock);
2779
2780 /* In the future we should revise the userspace API and allow it
2781 * to set a flag that it does support multi-channel, then we can
2782 * let this pass conditionally on the flag.
2783 * For current userspace, prohibit it since it won't work right.
2784 */
2785 if (chans > 1)
2786 return -EOPNOTSUPP;
2787
2788 if (wmediumd_portid)
2789 return -EBUSY;
2790
2791 wmediumd_portid = info->snd_portid;
2792
2793 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2794 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2795
2796 return 0;
2797 }
2798
2799 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2800 {
2801 struct hwsim_new_radio_params param = { 0 };
2802
2803 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2804 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2805 param.channels = channels;
2806 param.destroy_on_close =
2807 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2808
2809 if (info->attrs[HWSIM_ATTR_CHANNELS])
2810 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2811
2812 if (info->attrs[HWSIM_ATTR_NO_VIF])
2813 param.no_vif = true;
2814
2815 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2816 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2817
2818 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2819 param.use_chanctx = true;
2820 else
2821 param.use_chanctx = (param.channels > 1);
2822
2823 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2824 param.reg_alpha2 =
2825 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2826
2827 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2828 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2829
2830 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2831 return -EINVAL;
2832 param.regd = hwsim_world_regdom_custom[idx];
2833 }
2834
2835 return mac80211_hwsim_new_radio(info, &param);
2836 }
2837
2838 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2839 {
2840 struct mac80211_hwsim_data *data;
2841 s64 idx = -1;
2842 const char *hwname = NULL;
2843
2844 if (info->attrs[HWSIM_ATTR_RADIO_ID])
2845 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2846 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2847 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2848 else
2849 return -EINVAL;
2850
2851 spin_lock_bh(&hwsim_radio_lock);
2852 list_for_each_entry(data, &hwsim_radios, list) {
2853 if (idx >= 0) {
2854 if (data->idx != idx)
2855 continue;
2856 } else {
2857 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
2858 continue;
2859 }
2860
2861 list_del(&data->list);
2862 spin_unlock_bh(&hwsim_radio_lock);
2863 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2864 info);
2865 return 0;
2866 }
2867 spin_unlock_bh(&hwsim_radio_lock);
2868
2869 return -ENODEV;
2870 }
2871
2872 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
2873 {
2874 struct mac80211_hwsim_data *data;
2875 struct sk_buff *skb;
2876 int idx, res = -ENODEV;
2877
2878 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2879 return -EINVAL;
2880 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2881
2882 spin_lock_bh(&hwsim_radio_lock);
2883 list_for_each_entry(data, &hwsim_radios, list) {
2884 if (data->idx != idx)
2885 continue;
2886
2887 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2888 if (!skb) {
2889 res = -ENOMEM;
2890 goto out_err;
2891 }
2892
2893 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
2894 info->snd_seq, NULL, 0);
2895 if (res < 0) {
2896 nlmsg_free(skb);
2897 goto out_err;
2898 }
2899
2900 genlmsg_reply(skb, info);
2901 break;
2902 }
2903
2904 out_err:
2905 spin_unlock_bh(&hwsim_radio_lock);
2906
2907 return res;
2908 }
2909
2910 static int hwsim_dump_radio_nl(struct sk_buff *skb,
2911 struct netlink_callback *cb)
2912 {
2913 int idx = cb->args[0];
2914 struct mac80211_hwsim_data *data = NULL;
2915 int res;
2916
2917 spin_lock_bh(&hwsim_radio_lock);
2918
2919 if (idx == hwsim_radio_idx)
2920 goto done;
2921
2922 list_for_each_entry(data, &hwsim_radios, list) {
2923 if (data->idx < idx)
2924 continue;
2925
2926 res = mac80211_hwsim_get_radio(skb, data,
2927 NETLINK_CB(cb->skb).portid,
2928 cb->nlh->nlmsg_seq, cb,
2929 NLM_F_MULTI);
2930 if (res < 0)
2931 break;
2932
2933 idx = data->idx + 1;
2934 }
2935
2936 cb->args[0] = idx;
2937
2938 done:
2939 spin_unlock_bh(&hwsim_radio_lock);
2940 return skb->len;
2941 }
2942
2943 /* Generic Netlink operations array */
2944 static const struct genl_ops hwsim_ops[] = {
2945 {
2946 .cmd = HWSIM_CMD_REGISTER,
2947 .policy = hwsim_genl_policy,
2948 .doit = hwsim_register_received_nl,
2949 .flags = GENL_ADMIN_PERM,
2950 },
2951 {
2952 .cmd = HWSIM_CMD_FRAME,
2953 .policy = hwsim_genl_policy,
2954 .doit = hwsim_cloned_frame_received_nl,
2955 },
2956 {
2957 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2958 .policy = hwsim_genl_policy,
2959 .doit = hwsim_tx_info_frame_received_nl,
2960 },
2961 {
2962 .cmd = HWSIM_CMD_NEW_RADIO,
2963 .policy = hwsim_genl_policy,
2964 .doit = hwsim_new_radio_nl,
2965 .flags = GENL_ADMIN_PERM,
2966 },
2967 {
2968 .cmd = HWSIM_CMD_DEL_RADIO,
2969 .policy = hwsim_genl_policy,
2970 .doit = hwsim_del_radio_nl,
2971 .flags = GENL_ADMIN_PERM,
2972 },
2973 {
2974 .cmd = HWSIM_CMD_GET_RADIO,
2975 .policy = hwsim_genl_policy,
2976 .doit = hwsim_get_radio_nl,
2977 .dumpit = hwsim_dump_radio_nl,
2978 },
2979 };
2980
2981 static void destroy_radio(struct work_struct *work)
2982 {
2983 struct mac80211_hwsim_data *data =
2984 container_of(work, struct mac80211_hwsim_data, destroy_work);
2985
2986 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
2987 }
2988
2989 static void remove_user_radios(u32 portid)
2990 {
2991 struct mac80211_hwsim_data *entry, *tmp;
2992
2993 spin_lock_bh(&hwsim_radio_lock);
2994 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
2995 if (entry->destroy_on_close && entry->portid == portid) {
2996 list_del(&entry->list);
2997 INIT_WORK(&entry->destroy_work, destroy_radio);
2998 schedule_work(&entry->destroy_work);
2999 }
3000 }
3001 spin_unlock_bh(&hwsim_radio_lock);
3002 }
3003
3004 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3005 unsigned long state,
3006 void *_notify)
3007 {
3008 struct netlink_notify *notify = _notify;
3009
3010 if (state != NETLINK_URELEASE)
3011 return NOTIFY_DONE;
3012
3013 remove_user_radios(notify->portid);
3014
3015 if (notify->portid == wmediumd_portid) {
3016 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3017 " socket, switching to perfect channel medium\n");
3018 wmediumd_portid = 0;
3019 }
3020 return NOTIFY_DONE;
3021
3022 }
3023
3024 static struct notifier_block hwsim_netlink_notifier = {
3025 .notifier_call = mac80211_hwsim_netlink_notify,
3026 };
3027
3028 static int hwsim_init_netlink(void)
3029 {
3030 int rc;
3031
3032 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3033
3034 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3035 hwsim_ops,
3036 hwsim_mcgrps);
3037 if (rc)
3038 goto failure;
3039
3040 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3041 if (rc)
3042 goto failure;
3043
3044 return 0;
3045
3046 failure:
3047 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3048 return -EINVAL;
3049 }
3050
3051 static void hwsim_exit_netlink(void)
3052 {
3053 /* unregister the notifier */
3054 netlink_unregister_notifier(&hwsim_netlink_notifier);
3055 /* unregister the family */
3056 genl_unregister_family(&hwsim_genl_family);
3057 }
3058
3059 static int __init init_mac80211_hwsim(void)
3060 {
3061 int i, err;
3062
3063 if (radios < 0 || radios > 100)
3064 return -EINVAL;
3065
3066 if (channels < 1)
3067 return -EINVAL;
3068
3069 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3070 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3071 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3072 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3073 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3074 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3075 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3076 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3077 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3078 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3079 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3080 mac80211_hwsim_assign_vif_chanctx;
3081 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3082 mac80211_hwsim_unassign_vif_chanctx;
3083
3084 spin_lock_init(&hwsim_radio_lock);
3085 INIT_LIST_HEAD(&hwsim_radios);
3086
3087 err = platform_driver_register(&mac80211_hwsim_driver);
3088 if (err)
3089 return err;
3090
3091 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3092 if (IS_ERR(hwsim_class)) {
3093 err = PTR_ERR(hwsim_class);
3094 goto out_unregister_driver;
3095 }
3096
3097 err = hwsim_init_netlink();
3098 if (err < 0)
3099 goto out_unregister_driver;
3100
3101 for (i = 0; i < radios; i++) {
3102 struct hwsim_new_radio_params param = { 0 };
3103
3104 param.channels = channels;
3105
3106 switch (regtest) {
3107 case HWSIM_REGTEST_DIFF_COUNTRY:
3108 if (i < ARRAY_SIZE(hwsim_alpha2s))
3109 param.reg_alpha2 = hwsim_alpha2s[i];
3110 break;
3111 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3112 if (!i)
3113 param.reg_alpha2 = hwsim_alpha2s[0];
3114 break;
3115 case HWSIM_REGTEST_STRICT_ALL:
3116 param.reg_strict = true;
3117 case HWSIM_REGTEST_DRIVER_REG_ALL:
3118 param.reg_alpha2 = hwsim_alpha2s[0];
3119 break;
3120 case HWSIM_REGTEST_WORLD_ROAM:
3121 if (i == 0)
3122 param.regd = &hwsim_world_regdom_custom_01;
3123 break;
3124 case HWSIM_REGTEST_CUSTOM_WORLD:
3125 param.regd = &hwsim_world_regdom_custom_01;
3126 break;
3127 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3128 if (i == 0)
3129 param.regd = &hwsim_world_regdom_custom_01;
3130 else if (i == 1)
3131 param.regd = &hwsim_world_regdom_custom_02;
3132 break;
3133 case HWSIM_REGTEST_STRICT_FOLLOW:
3134 if (i == 0) {
3135 param.reg_strict = true;
3136 param.reg_alpha2 = hwsim_alpha2s[0];
3137 }
3138 break;
3139 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3140 if (i == 0) {
3141 param.reg_strict = true;
3142 param.reg_alpha2 = hwsim_alpha2s[0];
3143 } else if (i == 1) {
3144 param.reg_alpha2 = hwsim_alpha2s[1];
3145 }
3146 break;
3147 case HWSIM_REGTEST_ALL:
3148 switch (i) {
3149 case 0:
3150 param.regd = &hwsim_world_regdom_custom_01;
3151 break;
3152 case 1:
3153 param.regd = &hwsim_world_regdom_custom_02;
3154 break;
3155 case 2:
3156 param.reg_alpha2 = hwsim_alpha2s[0];
3157 break;
3158 case 3:
3159 param.reg_alpha2 = hwsim_alpha2s[1];
3160 break;
3161 case 4:
3162 param.reg_strict = true;
3163 param.reg_alpha2 = hwsim_alpha2s[2];
3164 break;
3165 }
3166 break;
3167 default:
3168 break;
3169 }
3170
3171 param.p2p_device = support_p2p_device;
3172 param.use_chanctx = channels > 1;
3173
3174 err = mac80211_hwsim_new_radio(NULL, &param);
3175 if (err < 0)
3176 goto out_free_radios;
3177 }
3178
3179 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3180 hwsim_mon_setup);
3181 if (hwsim_mon == NULL) {
3182 err = -ENOMEM;
3183 goto out_free_radios;
3184 }
3185
3186 rtnl_lock();
3187 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3188 if (err < 0) {
3189 rtnl_unlock();
3190 goto out_free_radios;
3191 }
3192
3193 err = register_netdevice(hwsim_mon);
3194 if (err < 0) {
3195 rtnl_unlock();
3196 goto out_free_mon;
3197 }
3198 rtnl_unlock();
3199
3200 return 0;
3201
3202 out_free_mon:
3203 free_netdev(hwsim_mon);
3204 out_free_radios:
3205 mac80211_hwsim_free();
3206 out_unregister_driver:
3207 platform_driver_unregister(&mac80211_hwsim_driver);
3208 return err;
3209 }
3210 module_init(init_mac80211_hwsim);
3211
3212 static void __exit exit_mac80211_hwsim(void)
3213 {
3214 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3215
3216 hwsim_exit_netlink();
3217
3218 mac80211_hwsim_free();
3219 unregister_netdev(hwsim_mon);
3220 platform_driver_unregister(&mac80211_hwsim_driver);
3221 }
3222 module_exit(exit_mac80211_hwsim);
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