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mac80211: support creating wiphy w/out creating wlanX
[deliverable/linux.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/platform_device.h>
29 #include <linux/debugfs.h>
30 #include <linux/module.h>
31 #include <linux/ktime.h>
32 #include <net/genetlink.h>
33 #include "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 .owner = THIS_MODULE,
399 },
400 };
401
402 struct mac80211_hwsim_data {
403 struct list_head list;
404 struct ieee80211_hw *hw;
405 struct device *dev;
406 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
407 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
408 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
409 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
410 struct ieee80211_iface_combination if_combination;
411
412 struct mac_address addresses[2];
413 int channels, idx;
414 bool use_chanctx;
415 bool destroy_on_close;
416 struct work_struct destroy_work;
417 u32 portid;
418
419 struct ieee80211_channel *tmp_chan;
420 struct delayed_work roc_done;
421 struct delayed_work hw_scan;
422 struct cfg80211_scan_request *hw_scan_request;
423 struct ieee80211_vif *hw_scan_vif;
424 int scan_chan_idx;
425
426 struct ieee80211_channel *channel;
427 u64 beacon_int /* beacon interval in us */;
428 unsigned int rx_filter;
429 bool started, idle, scanning;
430 struct mutex mutex;
431 struct tasklet_hrtimer beacon_timer;
432 enum ps_mode {
433 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
434 } ps;
435 bool ps_poll_pending;
436 struct dentry *debugfs;
437
438 struct sk_buff_head pending; /* packets pending */
439 /*
440 * Only radios in the same group can communicate together (the
441 * channel has to match too). Each bit represents a group. A
442 * radio can be in more than one group.
443 */
444 u64 group;
445
446 int power_level;
447
448 /* difference between this hw's clock and the real clock, in usecs */
449 s64 tsf_offset;
450 s64 bcn_delta;
451 /* absolute beacon transmission time. Used to cover up "tx" delay. */
452 u64 abs_bcn_ts;
453
454 /* Stats */
455 u64 tx_pkts;
456 u64 rx_pkts;
457 u64 tx_bytes;
458 u64 rx_bytes;
459 u64 tx_dropped;
460 u64 tx_failed;
461 };
462
463
464 struct hwsim_radiotap_hdr {
465 struct ieee80211_radiotap_header hdr;
466 __le64 rt_tsft;
467 u8 rt_flags;
468 u8 rt_rate;
469 __le16 rt_channel;
470 __le16 rt_chbitmask;
471 } __packed;
472
473 struct hwsim_radiotap_ack_hdr {
474 struct ieee80211_radiotap_header hdr;
475 u8 rt_flags;
476 u8 pad;
477 __le16 rt_channel;
478 __le16 rt_chbitmask;
479 } __packed;
480
481 /* MAC80211_HWSIM netlinf family */
482 static struct genl_family hwsim_genl_family = {
483 .id = GENL_ID_GENERATE,
484 .hdrsize = 0,
485 .name = "MAC80211_HWSIM",
486 .version = 1,
487 .maxattr = HWSIM_ATTR_MAX,
488 };
489
490 /* MAC80211_HWSIM netlink policy */
491
492 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
493 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
494 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
495 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
496 .len = IEEE80211_MAX_DATA_LEN },
497 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
498 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
499 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
500 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
501 .len = IEEE80211_TX_MAX_RATES *
502 sizeof(struct hwsim_tx_rate)},
503 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
504 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
505 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
506 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
507 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
508 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
509 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
510 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
511 };
512
513 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
514 struct sk_buff *skb,
515 struct ieee80211_channel *chan);
516
517 /* sysfs attributes */
518 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
519 {
520 struct mac80211_hwsim_data *data = dat;
521 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
522 struct sk_buff *skb;
523 struct ieee80211_pspoll *pspoll;
524
525 if (!vp->assoc)
526 return;
527
528 wiphy_debug(data->hw->wiphy,
529 "%s: send PS-Poll to %pM for aid %d\n",
530 __func__, vp->bssid, vp->aid);
531
532 skb = dev_alloc_skb(sizeof(*pspoll));
533 if (!skb)
534 return;
535 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
536 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
537 IEEE80211_STYPE_PSPOLL |
538 IEEE80211_FCTL_PM);
539 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
540 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
541 memcpy(pspoll->ta, mac, ETH_ALEN);
542
543 rcu_read_lock();
544 mac80211_hwsim_tx_frame(data->hw, skb,
545 rcu_dereference(vif->chanctx_conf)->def.chan);
546 rcu_read_unlock();
547 }
548
549 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
550 struct ieee80211_vif *vif, int ps)
551 {
552 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
553 struct sk_buff *skb;
554 struct ieee80211_hdr *hdr;
555
556 if (!vp->assoc)
557 return;
558
559 wiphy_debug(data->hw->wiphy,
560 "%s: send data::nullfunc to %pM ps=%d\n",
561 __func__, vp->bssid, ps);
562
563 skb = dev_alloc_skb(sizeof(*hdr));
564 if (!skb)
565 return;
566 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
567 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
568 IEEE80211_STYPE_NULLFUNC |
569 (ps ? IEEE80211_FCTL_PM : 0));
570 hdr->duration_id = cpu_to_le16(0);
571 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
572 memcpy(hdr->addr2, mac, ETH_ALEN);
573 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
574
575 rcu_read_lock();
576 mac80211_hwsim_tx_frame(data->hw, skb,
577 rcu_dereference(vif->chanctx_conf)->def.chan);
578 rcu_read_unlock();
579 }
580
581
582 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
583 struct ieee80211_vif *vif)
584 {
585 struct mac80211_hwsim_data *data = dat;
586 hwsim_send_nullfunc(data, mac, vif, 1);
587 }
588
589 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
590 struct ieee80211_vif *vif)
591 {
592 struct mac80211_hwsim_data *data = dat;
593 hwsim_send_nullfunc(data, mac, vif, 0);
594 }
595
596 static int hwsim_fops_ps_read(void *dat, u64 *val)
597 {
598 struct mac80211_hwsim_data *data = dat;
599 *val = data->ps;
600 return 0;
601 }
602
603 static int hwsim_fops_ps_write(void *dat, u64 val)
604 {
605 struct mac80211_hwsim_data *data = dat;
606 enum ps_mode old_ps;
607
608 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
609 val != PS_MANUAL_POLL)
610 return -EINVAL;
611
612 old_ps = data->ps;
613 data->ps = val;
614
615 if (val == PS_MANUAL_POLL) {
616 ieee80211_iterate_active_interfaces(data->hw,
617 IEEE80211_IFACE_ITER_NORMAL,
618 hwsim_send_ps_poll, data);
619 data->ps_poll_pending = true;
620 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
621 ieee80211_iterate_active_interfaces(data->hw,
622 IEEE80211_IFACE_ITER_NORMAL,
623 hwsim_send_nullfunc_ps,
624 data);
625 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
626 ieee80211_iterate_active_interfaces(data->hw,
627 IEEE80211_IFACE_ITER_NORMAL,
628 hwsim_send_nullfunc_no_ps,
629 data);
630 }
631
632 return 0;
633 }
634
635 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
636 "%llu\n");
637
638 static int hwsim_write_simulate_radar(void *dat, u64 val)
639 {
640 struct mac80211_hwsim_data *data = dat;
641
642 ieee80211_radar_detected(data->hw);
643
644 return 0;
645 }
646
647 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
648 hwsim_write_simulate_radar, "%llu\n");
649
650 static int hwsim_fops_group_read(void *dat, u64 *val)
651 {
652 struct mac80211_hwsim_data *data = dat;
653 *val = data->group;
654 return 0;
655 }
656
657 static int hwsim_fops_group_write(void *dat, u64 val)
658 {
659 struct mac80211_hwsim_data *data = dat;
660 data->group = val;
661 return 0;
662 }
663
664 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
665 hwsim_fops_group_read, hwsim_fops_group_write,
666 "%llx\n");
667
668 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
669 struct net_device *dev)
670 {
671 /* TODO: allow packet injection */
672 dev_kfree_skb(skb);
673 return NETDEV_TX_OK;
674 }
675
676 static inline u64 mac80211_hwsim_get_tsf_raw(void)
677 {
678 return ktime_to_us(ktime_get_real());
679 }
680
681 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
682 {
683 u64 now = mac80211_hwsim_get_tsf_raw();
684 return cpu_to_le64(now + data->tsf_offset);
685 }
686
687 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
688 struct ieee80211_vif *vif)
689 {
690 struct mac80211_hwsim_data *data = hw->priv;
691 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
692 }
693
694 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
695 struct ieee80211_vif *vif, u64 tsf)
696 {
697 struct mac80211_hwsim_data *data = hw->priv;
698 u64 now = mac80211_hwsim_get_tsf(hw, vif);
699 u32 bcn_int = data->beacon_int;
700 u64 delta = abs64(tsf - now);
701
702 /* adjust after beaconing with new timestamp at old TBTT */
703 if (tsf > now) {
704 data->tsf_offset += delta;
705 data->bcn_delta = do_div(delta, bcn_int);
706 } else {
707 data->tsf_offset -= delta;
708 data->bcn_delta = -do_div(delta, bcn_int);
709 }
710 }
711
712 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
713 struct sk_buff *tx_skb,
714 struct ieee80211_channel *chan)
715 {
716 struct mac80211_hwsim_data *data = hw->priv;
717 struct sk_buff *skb;
718 struct hwsim_radiotap_hdr *hdr;
719 u16 flags;
720 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
721 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
722
723 if (!netif_running(hwsim_mon))
724 return;
725
726 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
727 if (skb == NULL)
728 return;
729
730 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
731 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
732 hdr->hdr.it_pad = 0;
733 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
734 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
735 (1 << IEEE80211_RADIOTAP_RATE) |
736 (1 << IEEE80211_RADIOTAP_TSFT) |
737 (1 << IEEE80211_RADIOTAP_CHANNEL));
738 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
739 hdr->rt_flags = 0;
740 hdr->rt_rate = txrate->bitrate / 5;
741 hdr->rt_channel = cpu_to_le16(chan->center_freq);
742 flags = IEEE80211_CHAN_2GHZ;
743 if (txrate->flags & IEEE80211_RATE_ERP_G)
744 flags |= IEEE80211_CHAN_OFDM;
745 else
746 flags |= IEEE80211_CHAN_CCK;
747 hdr->rt_chbitmask = cpu_to_le16(flags);
748
749 skb->dev = hwsim_mon;
750 skb_set_mac_header(skb, 0);
751 skb->ip_summed = CHECKSUM_UNNECESSARY;
752 skb->pkt_type = PACKET_OTHERHOST;
753 skb->protocol = htons(ETH_P_802_2);
754 memset(skb->cb, 0, sizeof(skb->cb));
755 netif_rx(skb);
756 }
757
758
759 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
760 const u8 *addr)
761 {
762 struct sk_buff *skb;
763 struct hwsim_radiotap_ack_hdr *hdr;
764 u16 flags;
765 struct ieee80211_hdr *hdr11;
766
767 if (!netif_running(hwsim_mon))
768 return;
769
770 skb = dev_alloc_skb(100);
771 if (skb == NULL)
772 return;
773
774 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
775 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
776 hdr->hdr.it_pad = 0;
777 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
778 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
779 (1 << IEEE80211_RADIOTAP_CHANNEL));
780 hdr->rt_flags = 0;
781 hdr->pad = 0;
782 hdr->rt_channel = cpu_to_le16(chan->center_freq);
783 flags = IEEE80211_CHAN_2GHZ;
784 hdr->rt_chbitmask = cpu_to_le16(flags);
785
786 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
787 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
788 IEEE80211_STYPE_ACK);
789 hdr11->duration_id = cpu_to_le16(0);
790 memcpy(hdr11->addr1, addr, ETH_ALEN);
791
792 skb->dev = hwsim_mon;
793 skb_set_mac_header(skb, 0);
794 skb->ip_summed = CHECKSUM_UNNECESSARY;
795 skb->pkt_type = PACKET_OTHERHOST;
796 skb->protocol = htons(ETH_P_802_2);
797 memset(skb->cb, 0, sizeof(skb->cb));
798 netif_rx(skb);
799 }
800
801 struct mac80211_hwsim_addr_match_data {
802 u8 addr[ETH_ALEN];
803 bool ret;
804 };
805
806 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
807 struct ieee80211_vif *vif)
808 {
809 struct mac80211_hwsim_addr_match_data *md = data;
810
811 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
812 md->ret = true;
813 }
814
815 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
816 const u8 *addr)
817 {
818 struct mac80211_hwsim_addr_match_data md = {
819 .ret = false,
820 };
821
822 memcpy(md.addr, addr, ETH_ALEN);
823
824 ieee80211_iterate_active_interfaces_atomic(data->hw,
825 IEEE80211_IFACE_ITER_NORMAL,
826 mac80211_hwsim_addr_iter,
827 &md);
828
829 return md.ret;
830 }
831
832 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
833 struct sk_buff *skb)
834 {
835 switch (data->ps) {
836 case PS_DISABLED:
837 return true;
838 case PS_ENABLED:
839 return false;
840 case PS_AUTO_POLL:
841 /* TODO: accept (some) Beacons by default and other frames only
842 * if pending PS-Poll has been sent */
843 return true;
844 case PS_MANUAL_POLL:
845 /* Allow unicast frames to own address if there is a pending
846 * PS-Poll */
847 if (data->ps_poll_pending &&
848 mac80211_hwsim_addr_match(data, skb->data + 4)) {
849 data->ps_poll_pending = false;
850 return true;
851 }
852 return false;
853 }
854
855 return true;
856 }
857
858 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
859 struct sk_buff *my_skb,
860 int dst_portid)
861 {
862 struct sk_buff *skb;
863 struct mac80211_hwsim_data *data = hw->priv;
864 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
865 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
866 void *msg_head;
867 unsigned int hwsim_flags = 0;
868 int i;
869 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
870
871 if (data->ps != PS_DISABLED)
872 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
873 /* If the queue contains MAX_QUEUE skb's drop some */
874 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
875 /* Droping until WARN_QUEUE level */
876 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
877 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
878 data->tx_dropped++;
879 }
880 }
881
882 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
883 if (skb == NULL)
884 goto nla_put_failure;
885
886 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
887 HWSIM_CMD_FRAME);
888 if (msg_head == NULL) {
889 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
890 goto nla_put_failure;
891 }
892
893 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
894 ETH_ALEN, data->addresses[1].addr))
895 goto nla_put_failure;
896
897 /* We get the skb->data */
898 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
899 goto nla_put_failure;
900
901 /* We get the flags for this transmission, and we translate them to
902 wmediumd flags */
903
904 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
905 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
906
907 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
908 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
909
910 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
911 goto nla_put_failure;
912
913 /* We get the tx control (rate and retries) info*/
914
915 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
916 tx_attempts[i].idx = info->status.rates[i].idx;
917 tx_attempts[i].count = info->status.rates[i].count;
918 }
919
920 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
921 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
922 tx_attempts))
923 goto nla_put_failure;
924
925 /* We create a cookie to identify this skb */
926 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
927 goto nla_put_failure;
928
929 genlmsg_end(skb, msg_head);
930 genlmsg_unicast(&init_net, skb, dst_portid);
931
932 /* Enqueue the packet */
933 skb_queue_tail(&data->pending, my_skb);
934 data->tx_pkts++;
935 data->tx_bytes += my_skb->len;
936 return;
937
938 nla_put_failure:
939 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
940 ieee80211_free_txskb(hw, my_skb);
941 data->tx_failed++;
942 }
943
944 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
945 struct ieee80211_channel *c2)
946 {
947 if (!c1 || !c2)
948 return false;
949
950 return c1->center_freq == c2->center_freq;
951 }
952
953 struct tx_iter_data {
954 struct ieee80211_channel *channel;
955 bool receive;
956 };
957
958 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
959 struct ieee80211_vif *vif)
960 {
961 struct tx_iter_data *data = _data;
962
963 if (!vif->chanctx_conf)
964 return;
965
966 if (!hwsim_chans_compat(data->channel,
967 rcu_dereference(vif->chanctx_conf)->def.chan))
968 return;
969
970 data->receive = true;
971 }
972
973 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
974 struct sk_buff *skb,
975 struct ieee80211_channel *chan)
976 {
977 struct mac80211_hwsim_data *data = hw->priv, *data2;
978 bool ack = false;
979 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
980 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
981 struct ieee80211_rx_status rx_status;
982 u64 now;
983
984 memset(&rx_status, 0, sizeof(rx_status));
985 rx_status.flag |= RX_FLAG_MACTIME_START;
986 rx_status.freq = chan->center_freq;
987 rx_status.band = chan->band;
988 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
989 rx_status.rate_idx =
990 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
991 rx_status.vht_nss =
992 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
993 rx_status.flag |= RX_FLAG_VHT;
994 } else {
995 rx_status.rate_idx = info->control.rates[0].idx;
996 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
997 rx_status.flag |= RX_FLAG_HT;
998 }
999 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1000 rx_status.flag |= RX_FLAG_40MHZ;
1001 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1002 rx_status.flag |= RX_FLAG_SHORT_GI;
1003 /* TODO: simulate real signal strength (and optional packet loss) */
1004 rx_status.signal = data->power_level - 50;
1005
1006 if (data->ps != PS_DISABLED)
1007 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1008
1009 /* release the skb's source info */
1010 skb_orphan(skb);
1011 skb_dst_drop(skb);
1012 skb->mark = 0;
1013 secpath_reset(skb);
1014 nf_reset(skb);
1015
1016 /*
1017 * Get absolute mactime here so all HWs RX at the "same time", and
1018 * absolute TX time for beacon mactime so the timestamp matches.
1019 * Giving beacons a different mactime than non-beacons looks messy, but
1020 * it helps the Toffset be exact and a ~10us mactime discrepancy
1021 * probably doesn't really matter.
1022 */
1023 if (ieee80211_is_beacon(hdr->frame_control) ||
1024 ieee80211_is_probe_resp(hdr->frame_control))
1025 now = data->abs_bcn_ts;
1026 else
1027 now = mac80211_hwsim_get_tsf_raw();
1028
1029 /* Copy skb to all enabled radios that are on the current frequency */
1030 spin_lock(&hwsim_radio_lock);
1031 list_for_each_entry(data2, &hwsim_radios, list) {
1032 struct sk_buff *nskb;
1033 struct tx_iter_data tx_iter_data = {
1034 .receive = false,
1035 .channel = chan,
1036 };
1037
1038 if (data == data2)
1039 continue;
1040
1041 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1042 !hwsim_ps_rx_ok(data2, skb))
1043 continue;
1044
1045 if (!(data->group & data2->group))
1046 continue;
1047
1048 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1049 !hwsim_chans_compat(chan, data2->channel)) {
1050 ieee80211_iterate_active_interfaces_atomic(
1051 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1052 mac80211_hwsim_tx_iter, &tx_iter_data);
1053 if (!tx_iter_data.receive)
1054 continue;
1055 }
1056
1057 /*
1058 * reserve some space for our vendor and the normal
1059 * radiotap header, since we're copying anyway
1060 */
1061 if (skb->len < PAGE_SIZE && paged_rx) {
1062 struct page *page = alloc_page(GFP_ATOMIC);
1063
1064 if (!page)
1065 continue;
1066
1067 nskb = dev_alloc_skb(128);
1068 if (!nskb) {
1069 __free_page(page);
1070 continue;
1071 }
1072
1073 memcpy(page_address(page), skb->data, skb->len);
1074 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1075 } else {
1076 nskb = skb_copy(skb, GFP_ATOMIC);
1077 if (!nskb)
1078 continue;
1079 }
1080
1081 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1082 ack = true;
1083
1084 rx_status.mactime = now + data2->tsf_offset;
1085
1086 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1087 data2->rx_pkts++;
1088 data2->rx_bytes += nskb->len;
1089 ieee80211_rx_irqsafe(data2->hw, nskb);
1090 }
1091 spin_unlock(&hwsim_radio_lock);
1092
1093 return ack;
1094 }
1095
1096 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1097 struct ieee80211_tx_control *control,
1098 struct sk_buff *skb)
1099 {
1100 struct mac80211_hwsim_data *data = hw->priv;
1101 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1102 struct ieee80211_chanctx_conf *chanctx_conf;
1103 struct ieee80211_channel *channel;
1104 bool ack;
1105 u32 _portid;
1106
1107 if (WARN_ON(skb->len < 10)) {
1108 /* Should not happen; just a sanity check for addr1 use */
1109 ieee80211_free_txskb(hw, skb);
1110 return;
1111 }
1112
1113 if (!data->use_chanctx) {
1114 channel = data->channel;
1115 } else if (txi->hw_queue == 4) {
1116 channel = data->tmp_chan;
1117 } else {
1118 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1119 if (chanctx_conf)
1120 channel = chanctx_conf->def.chan;
1121 else
1122 channel = NULL;
1123 }
1124
1125 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1126 ieee80211_free_txskb(hw, skb);
1127 return;
1128 }
1129
1130 if (data->idle && !data->tmp_chan) {
1131 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1132 ieee80211_free_txskb(hw, skb);
1133 return;
1134 }
1135
1136 if (txi->control.vif)
1137 hwsim_check_magic(txi->control.vif);
1138 if (control->sta)
1139 hwsim_check_sta_magic(control->sta);
1140
1141 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1142 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1143 txi->control.rates,
1144 ARRAY_SIZE(txi->control.rates));
1145
1146 txi->rate_driver_data[0] = channel;
1147 mac80211_hwsim_monitor_rx(hw, skb, channel);
1148
1149 /* wmediumd mode check */
1150 _portid = ACCESS_ONCE(wmediumd_portid);
1151
1152 if (_portid)
1153 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1154
1155 /* NO wmediumd detected, perfect medium simulation */
1156 data->tx_pkts++;
1157 data->tx_bytes += skb->len;
1158 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1159
1160 if (ack && skb->len >= 16) {
1161 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1162 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1163 }
1164
1165 ieee80211_tx_info_clear_status(txi);
1166
1167 /* frame was transmitted at most favorable rate at first attempt */
1168 txi->control.rates[0].count = 1;
1169 txi->control.rates[1].idx = -1;
1170
1171 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1172 txi->flags |= IEEE80211_TX_STAT_ACK;
1173 ieee80211_tx_status_irqsafe(hw, skb);
1174 }
1175
1176
1177 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1178 {
1179 struct mac80211_hwsim_data *data = hw->priv;
1180 wiphy_debug(hw->wiphy, "%s\n", __func__);
1181 data->started = true;
1182 return 0;
1183 }
1184
1185
1186 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1187 {
1188 struct mac80211_hwsim_data *data = hw->priv;
1189 data->started = false;
1190 tasklet_hrtimer_cancel(&data->beacon_timer);
1191 wiphy_debug(hw->wiphy, "%s\n", __func__);
1192 }
1193
1194
1195 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1196 struct ieee80211_vif *vif)
1197 {
1198 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1199 __func__, ieee80211_vif_type_p2p(vif),
1200 vif->addr);
1201 hwsim_set_magic(vif);
1202
1203 vif->cab_queue = 0;
1204 vif->hw_queue[IEEE80211_AC_VO] = 0;
1205 vif->hw_queue[IEEE80211_AC_VI] = 1;
1206 vif->hw_queue[IEEE80211_AC_BE] = 2;
1207 vif->hw_queue[IEEE80211_AC_BK] = 3;
1208
1209 return 0;
1210 }
1211
1212
1213 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1214 struct ieee80211_vif *vif,
1215 enum nl80211_iftype newtype,
1216 bool newp2p)
1217 {
1218 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1219 wiphy_debug(hw->wiphy,
1220 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1221 __func__, ieee80211_vif_type_p2p(vif),
1222 newtype, vif->addr);
1223 hwsim_check_magic(vif);
1224
1225 /*
1226 * interface may change from non-AP to AP in
1227 * which case this needs to be set up again
1228 */
1229 vif->cab_queue = 0;
1230
1231 return 0;
1232 }
1233
1234 static void mac80211_hwsim_remove_interface(
1235 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1236 {
1237 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1238 __func__, ieee80211_vif_type_p2p(vif),
1239 vif->addr);
1240 hwsim_check_magic(vif);
1241 hwsim_clear_magic(vif);
1242 }
1243
1244 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1245 struct sk_buff *skb,
1246 struct ieee80211_channel *chan)
1247 {
1248 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1249
1250 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1251 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1252 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1253 txi->control.rates,
1254 ARRAY_SIZE(txi->control.rates));
1255 }
1256
1257 mac80211_hwsim_monitor_rx(hw, skb, chan);
1258
1259 if (_pid)
1260 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1261
1262 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1263 dev_kfree_skb(skb);
1264 }
1265
1266 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1267 struct ieee80211_vif *vif)
1268 {
1269 struct mac80211_hwsim_data *data = arg;
1270 struct ieee80211_hw *hw = data->hw;
1271 struct ieee80211_tx_info *info;
1272 struct ieee80211_rate *txrate;
1273 struct ieee80211_mgmt *mgmt;
1274 struct sk_buff *skb;
1275
1276 hwsim_check_magic(vif);
1277
1278 if (vif->type != NL80211_IFTYPE_AP &&
1279 vif->type != NL80211_IFTYPE_MESH_POINT &&
1280 vif->type != NL80211_IFTYPE_ADHOC)
1281 return;
1282
1283 skb = ieee80211_beacon_get(hw, vif);
1284 if (skb == NULL)
1285 return;
1286 info = IEEE80211_SKB_CB(skb);
1287 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1288 ieee80211_get_tx_rates(vif, NULL, skb,
1289 info->control.rates,
1290 ARRAY_SIZE(info->control.rates));
1291
1292 txrate = ieee80211_get_tx_rate(hw, info);
1293
1294 mgmt = (struct ieee80211_mgmt *) skb->data;
1295 /* fake header transmission time */
1296 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1297 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1298 data->tsf_offset +
1299 24 * 8 * 10 / txrate->bitrate);
1300
1301 mac80211_hwsim_tx_frame(hw, skb,
1302 rcu_dereference(vif->chanctx_conf)->def.chan);
1303
1304 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1305 ieee80211_csa_finish(vif);
1306 }
1307
1308 static enum hrtimer_restart
1309 mac80211_hwsim_beacon(struct hrtimer *timer)
1310 {
1311 struct mac80211_hwsim_data *data =
1312 container_of(timer, struct mac80211_hwsim_data,
1313 beacon_timer.timer);
1314 struct ieee80211_hw *hw = data->hw;
1315 u64 bcn_int = data->beacon_int;
1316 ktime_t next_bcn;
1317
1318 if (!data->started)
1319 goto out;
1320
1321 ieee80211_iterate_active_interfaces_atomic(
1322 hw, IEEE80211_IFACE_ITER_NORMAL,
1323 mac80211_hwsim_beacon_tx, data);
1324
1325 /* beacon at new TBTT + beacon interval */
1326 if (data->bcn_delta) {
1327 bcn_int -= data->bcn_delta;
1328 data->bcn_delta = 0;
1329 }
1330
1331 next_bcn = ktime_add(hrtimer_get_expires(timer),
1332 ns_to_ktime(bcn_int * 1000));
1333 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1334 out:
1335 return HRTIMER_NORESTART;
1336 }
1337
1338 static const char * const hwsim_chanwidths[] = {
1339 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1340 [NL80211_CHAN_WIDTH_20] = "ht20",
1341 [NL80211_CHAN_WIDTH_40] = "ht40",
1342 [NL80211_CHAN_WIDTH_80] = "vht80",
1343 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1344 [NL80211_CHAN_WIDTH_160] = "vht160",
1345 };
1346
1347 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1348 {
1349 struct mac80211_hwsim_data *data = hw->priv;
1350 struct ieee80211_conf *conf = &hw->conf;
1351 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1352 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1353 [IEEE80211_SMPS_OFF] = "off",
1354 [IEEE80211_SMPS_STATIC] = "static",
1355 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1356 };
1357
1358 if (conf->chandef.chan)
1359 wiphy_debug(hw->wiphy,
1360 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1361 __func__,
1362 conf->chandef.chan->center_freq,
1363 conf->chandef.center_freq1,
1364 conf->chandef.center_freq2,
1365 hwsim_chanwidths[conf->chandef.width],
1366 !!(conf->flags & IEEE80211_CONF_IDLE),
1367 !!(conf->flags & IEEE80211_CONF_PS),
1368 smps_modes[conf->smps_mode]);
1369 else
1370 wiphy_debug(hw->wiphy,
1371 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1372 __func__,
1373 !!(conf->flags & IEEE80211_CONF_IDLE),
1374 !!(conf->flags & IEEE80211_CONF_PS),
1375 smps_modes[conf->smps_mode]);
1376
1377 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1378
1379 data->channel = conf->chandef.chan;
1380
1381 WARN_ON(data->channel && data->use_chanctx);
1382
1383 data->power_level = conf->power_level;
1384 if (!data->started || !data->beacon_int)
1385 tasklet_hrtimer_cancel(&data->beacon_timer);
1386 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1387 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1388 u32 bcn_int = data->beacon_int;
1389 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1390
1391 tasklet_hrtimer_start(&data->beacon_timer,
1392 ns_to_ktime(until_tbtt * 1000),
1393 HRTIMER_MODE_REL);
1394 }
1395
1396 return 0;
1397 }
1398
1399
1400 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1401 unsigned int changed_flags,
1402 unsigned int *total_flags,u64 multicast)
1403 {
1404 struct mac80211_hwsim_data *data = hw->priv;
1405
1406 wiphy_debug(hw->wiphy, "%s\n", __func__);
1407
1408 data->rx_filter = 0;
1409 if (*total_flags & FIF_PROMISC_IN_BSS)
1410 data->rx_filter |= FIF_PROMISC_IN_BSS;
1411 if (*total_flags & FIF_ALLMULTI)
1412 data->rx_filter |= FIF_ALLMULTI;
1413
1414 *total_flags = data->rx_filter;
1415 }
1416
1417 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1418 struct ieee80211_vif *vif)
1419 {
1420 unsigned int *count = data;
1421 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1422
1423 if (vp->bcn_en)
1424 (*count)++;
1425 }
1426
1427 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1428 struct ieee80211_vif *vif,
1429 struct ieee80211_bss_conf *info,
1430 u32 changed)
1431 {
1432 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1433 struct mac80211_hwsim_data *data = hw->priv;
1434
1435 hwsim_check_magic(vif);
1436
1437 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1438 __func__, changed, vif->addr);
1439
1440 if (changed & BSS_CHANGED_BSSID) {
1441 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1442 __func__, info->bssid);
1443 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1444 }
1445
1446 if (changed & BSS_CHANGED_ASSOC) {
1447 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1448 info->assoc, info->aid);
1449 vp->assoc = info->assoc;
1450 vp->aid = info->aid;
1451 }
1452
1453 if (changed & BSS_CHANGED_BEACON_INT) {
1454 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
1455 data->beacon_int = info->beacon_int * 1024;
1456 }
1457
1458 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1459 wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
1460 vp->bcn_en = info->enable_beacon;
1461 if (data->started &&
1462 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1463 info->enable_beacon) {
1464 u64 tsf, until_tbtt;
1465 u32 bcn_int;
1466 if (WARN_ON(!data->beacon_int))
1467 data->beacon_int = 1000 * 1024;
1468 tsf = mac80211_hwsim_get_tsf(hw, vif);
1469 bcn_int = data->beacon_int;
1470 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1471 tasklet_hrtimer_start(&data->beacon_timer,
1472 ns_to_ktime(until_tbtt * 1000),
1473 HRTIMER_MODE_REL);
1474 } else if (!info->enable_beacon) {
1475 unsigned int count = 0;
1476 ieee80211_iterate_active_interfaces_atomic(
1477 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1478 mac80211_hwsim_bcn_en_iter, &count);
1479 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1480 count);
1481 if (count == 0)
1482 tasklet_hrtimer_cancel(&data->beacon_timer);
1483 }
1484 }
1485
1486 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1487 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1488 info->use_cts_prot);
1489 }
1490
1491 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1492 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1493 info->use_short_preamble);
1494 }
1495
1496 if (changed & BSS_CHANGED_ERP_SLOT) {
1497 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1498 }
1499
1500 if (changed & BSS_CHANGED_HT) {
1501 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1502 info->ht_operation_mode);
1503 }
1504
1505 if (changed & BSS_CHANGED_BASIC_RATES) {
1506 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1507 (unsigned long long) info->basic_rates);
1508 }
1509
1510 if (changed & BSS_CHANGED_TXPOWER)
1511 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1512 }
1513
1514 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1515 struct ieee80211_vif *vif,
1516 struct ieee80211_sta *sta)
1517 {
1518 hwsim_check_magic(vif);
1519 hwsim_set_sta_magic(sta);
1520
1521 return 0;
1522 }
1523
1524 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1525 struct ieee80211_vif *vif,
1526 struct ieee80211_sta *sta)
1527 {
1528 hwsim_check_magic(vif);
1529 hwsim_clear_sta_magic(sta);
1530
1531 return 0;
1532 }
1533
1534 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1535 struct ieee80211_vif *vif,
1536 enum sta_notify_cmd cmd,
1537 struct ieee80211_sta *sta)
1538 {
1539 hwsim_check_magic(vif);
1540
1541 switch (cmd) {
1542 case STA_NOTIFY_SLEEP:
1543 case STA_NOTIFY_AWAKE:
1544 /* TODO: make good use of these flags */
1545 break;
1546 default:
1547 WARN(1, "Invalid sta notify: %d\n", cmd);
1548 break;
1549 }
1550 }
1551
1552 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1553 struct ieee80211_sta *sta,
1554 bool set)
1555 {
1556 hwsim_check_sta_magic(sta);
1557 return 0;
1558 }
1559
1560 static int mac80211_hwsim_conf_tx(
1561 struct ieee80211_hw *hw,
1562 struct ieee80211_vif *vif, u16 queue,
1563 const struct ieee80211_tx_queue_params *params)
1564 {
1565 wiphy_debug(hw->wiphy,
1566 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1567 __func__, queue,
1568 params->txop, params->cw_min,
1569 params->cw_max, params->aifs);
1570 return 0;
1571 }
1572
1573 static int mac80211_hwsim_get_survey(
1574 struct ieee80211_hw *hw, int idx,
1575 struct survey_info *survey)
1576 {
1577 struct ieee80211_conf *conf = &hw->conf;
1578
1579 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1580
1581 if (idx != 0)
1582 return -ENOENT;
1583
1584 /* Current channel */
1585 survey->channel = conf->chandef.chan;
1586
1587 /*
1588 * Magically conjured noise level --- this is only ok for simulated hardware.
1589 *
1590 * A real driver which cannot determine the real channel noise MUST NOT
1591 * report any noise, especially not a magically conjured one :-)
1592 */
1593 survey->filled = SURVEY_INFO_NOISE_DBM;
1594 survey->noise = -92;
1595
1596 return 0;
1597 }
1598
1599 #ifdef CONFIG_NL80211_TESTMODE
1600 /*
1601 * This section contains example code for using netlink
1602 * attributes with the testmode command in nl80211.
1603 */
1604
1605 /* These enums need to be kept in sync with userspace */
1606 enum hwsim_testmode_attr {
1607 __HWSIM_TM_ATTR_INVALID = 0,
1608 HWSIM_TM_ATTR_CMD = 1,
1609 HWSIM_TM_ATTR_PS = 2,
1610
1611 /* keep last */
1612 __HWSIM_TM_ATTR_AFTER_LAST,
1613 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1614 };
1615
1616 enum hwsim_testmode_cmd {
1617 HWSIM_TM_CMD_SET_PS = 0,
1618 HWSIM_TM_CMD_GET_PS = 1,
1619 HWSIM_TM_CMD_STOP_QUEUES = 2,
1620 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1621 };
1622
1623 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1624 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1625 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1626 };
1627
1628 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1629 struct ieee80211_vif *vif,
1630 void *data, int len)
1631 {
1632 struct mac80211_hwsim_data *hwsim = hw->priv;
1633 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1634 struct sk_buff *skb;
1635 int err, ps;
1636
1637 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1638 hwsim_testmode_policy);
1639 if (err)
1640 return err;
1641
1642 if (!tb[HWSIM_TM_ATTR_CMD])
1643 return -EINVAL;
1644
1645 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1646 case HWSIM_TM_CMD_SET_PS:
1647 if (!tb[HWSIM_TM_ATTR_PS])
1648 return -EINVAL;
1649 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1650 return hwsim_fops_ps_write(hwsim, ps);
1651 case HWSIM_TM_CMD_GET_PS:
1652 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1653 nla_total_size(sizeof(u32)));
1654 if (!skb)
1655 return -ENOMEM;
1656 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1657 goto nla_put_failure;
1658 return cfg80211_testmode_reply(skb);
1659 case HWSIM_TM_CMD_STOP_QUEUES:
1660 ieee80211_stop_queues(hw);
1661 return 0;
1662 case HWSIM_TM_CMD_WAKE_QUEUES:
1663 ieee80211_wake_queues(hw);
1664 return 0;
1665 default:
1666 return -EOPNOTSUPP;
1667 }
1668
1669 nla_put_failure:
1670 kfree_skb(skb);
1671 return -ENOBUFS;
1672 }
1673 #endif
1674
1675 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1676 struct ieee80211_vif *vif,
1677 enum ieee80211_ampdu_mlme_action action,
1678 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1679 u8 buf_size)
1680 {
1681 switch (action) {
1682 case IEEE80211_AMPDU_TX_START:
1683 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1684 break;
1685 case IEEE80211_AMPDU_TX_STOP_CONT:
1686 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1687 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1688 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1689 break;
1690 case IEEE80211_AMPDU_TX_OPERATIONAL:
1691 break;
1692 case IEEE80211_AMPDU_RX_START:
1693 case IEEE80211_AMPDU_RX_STOP:
1694 break;
1695 default:
1696 return -EOPNOTSUPP;
1697 }
1698
1699 return 0;
1700 }
1701
1702 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1703 struct ieee80211_vif *vif,
1704 u32 queues, bool drop)
1705 {
1706 /* Not implemented, queues only on kernel side */
1707 }
1708
1709 static void hw_scan_work(struct work_struct *work)
1710 {
1711 struct mac80211_hwsim_data *hwsim =
1712 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1713 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1714 int dwell, i;
1715
1716 mutex_lock(&hwsim->mutex);
1717 if (hwsim->scan_chan_idx >= req->n_channels) {
1718 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1719 ieee80211_scan_completed(hwsim->hw, false);
1720 hwsim->hw_scan_request = NULL;
1721 hwsim->hw_scan_vif = NULL;
1722 hwsim->tmp_chan = NULL;
1723 mutex_unlock(&hwsim->mutex);
1724 return;
1725 }
1726
1727 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1728 req->channels[hwsim->scan_chan_idx]->center_freq);
1729
1730 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1731 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1732 !req->n_ssids) {
1733 dwell = 120;
1734 } else {
1735 dwell = 30;
1736 /* send probes */
1737 for (i = 0; i < req->n_ssids; i++) {
1738 struct sk_buff *probe;
1739
1740 probe = ieee80211_probereq_get(hwsim->hw,
1741 hwsim->hw_scan_vif,
1742 req->ssids[i].ssid,
1743 req->ssids[i].ssid_len,
1744 req->ie_len);
1745 if (!probe)
1746 continue;
1747
1748 if (req->ie_len)
1749 memcpy(skb_put(probe, req->ie_len), req->ie,
1750 req->ie_len);
1751
1752 local_bh_disable();
1753 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1754 hwsim->tmp_chan);
1755 local_bh_enable();
1756 }
1757 }
1758 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1759 msecs_to_jiffies(dwell));
1760 hwsim->scan_chan_idx++;
1761 mutex_unlock(&hwsim->mutex);
1762 }
1763
1764 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1765 struct ieee80211_vif *vif,
1766 struct ieee80211_scan_request *hw_req)
1767 {
1768 struct mac80211_hwsim_data *hwsim = hw->priv;
1769 struct cfg80211_scan_request *req = &hw_req->req;
1770
1771 mutex_lock(&hwsim->mutex);
1772 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1773 mutex_unlock(&hwsim->mutex);
1774 return -EBUSY;
1775 }
1776 hwsim->hw_scan_request = req;
1777 hwsim->hw_scan_vif = vif;
1778 hwsim->scan_chan_idx = 0;
1779 mutex_unlock(&hwsim->mutex);
1780
1781 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1782
1783 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1784
1785 return 0;
1786 }
1787
1788 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1789 struct ieee80211_vif *vif)
1790 {
1791 struct mac80211_hwsim_data *hwsim = hw->priv;
1792
1793 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1794
1795 cancel_delayed_work_sync(&hwsim->hw_scan);
1796
1797 mutex_lock(&hwsim->mutex);
1798 ieee80211_scan_completed(hwsim->hw, true);
1799 hwsim->tmp_chan = NULL;
1800 hwsim->hw_scan_request = NULL;
1801 hwsim->hw_scan_vif = NULL;
1802 mutex_unlock(&hwsim->mutex);
1803 }
1804
1805 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1806 {
1807 struct mac80211_hwsim_data *hwsim = hw->priv;
1808
1809 mutex_lock(&hwsim->mutex);
1810
1811 if (hwsim->scanning) {
1812 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1813 goto out;
1814 }
1815
1816 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1817 hwsim->scanning = true;
1818
1819 out:
1820 mutex_unlock(&hwsim->mutex);
1821 }
1822
1823 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1824 {
1825 struct mac80211_hwsim_data *hwsim = hw->priv;
1826
1827 mutex_lock(&hwsim->mutex);
1828
1829 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1830 hwsim->scanning = false;
1831
1832 mutex_unlock(&hwsim->mutex);
1833 }
1834
1835 static void hw_roc_done(struct work_struct *work)
1836 {
1837 struct mac80211_hwsim_data *hwsim =
1838 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1839
1840 mutex_lock(&hwsim->mutex);
1841 ieee80211_remain_on_channel_expired(hwsim->hw);
1842 hwsim->tmp_chan = NULL;
1843 mutex_unlock(&hwsim->mutex);
1844
1845 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1846 }
1847
1848 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1849 struct ieee80211_vif *vif,
1850 struct ieee80211_channel *chan,
1851 int duration,
1852 enum ieee80211_roc_type type)
1853 {
1854 struct mac80211_hwsim_data *hwsim = hw->priv;
1855
1856 mutex_lock(&hwsim->mutex);
1857 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1858 mutex_unlock(&hwsim->mutex);
1859 return -EBUSY;
1860 }
1861
1862 hwsim->tmp_chan = chan;
1863 mutex_unlock(&hwsim->mutex);
1864
1865 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1866 chan->center_freq, duration);
1867
1868 ieee80211_ready_on_channel(hw);
1869
1870 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1871 msecs_to_jiffies(duration));
1872 return 0;
1873 }
1874
1875 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1876 {
1877 struct mac80211_hwsim_data *hwsim = hw->priv;
1878
1879 cancel_delayed_work_sync(&hwsim->roc_done);
1880
1881 mutex_lock(&hwsim->mutex);
1882 hwsim->tmp_chan = NULL;
1883 mutex_unlock(&hwsim->mutex);
1884
1885 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1886
1887 return 0;
1888 }
1889
1890 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1891 struct ieee80211_chanctx_conf *ctx)
1892 {
1893 hwsim_set_chanctx_magic(ctx);
1894 wiphy_debug(hw->wiphy,
1895 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1896 ctx->def.chan->center_freq, ctx->def.width,
1897 ctx->def.center_freq1, ctx->def.center_freq2);
1898 return 0;
1899 }
1900
1901 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1902 struct ieee80211_chanctx_conf *ctx)
1903 {
1904 wiphy_debug(hw->wiphy,
1905 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1906 ctx->def.chan->center_freq, ctx->def.width,
1907 ctx->def.center_freq1, ctx->def.center_freq2);
1908 hwsim_check_chanctx_magic(ctx);
1909 hwsim_clear_chanctx_magic(ctx);
1910 }
1911
1912 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1913 struct ieee80211_chanctx_conf *ctx,
1914 u32 changed)
1915 {
1916 hwsim_check_chanctx_magic(ctx);
1917 wiphy_debug(hw->wiphy,
1918 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1919 ctx->def.chan->center_freq, ctx->def.width,
1920 ctx->def.center_freq1, ctx->def.center_freq2);
1921 }
1922
1923 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1924 struct ieee80211_vif *vif,
1925 struct ieee80211_chanctx_conf *ctx)
1926 {
1927 hwsim_check_magic(vif);
1928 hwsim_check_chanctx_magic(ctx);
1929
1930 return 0;
1931 }
1932
1933 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1934 struct ieee80211_vif *vif,
1935 struct ieee80211_chanctx_conf *ctx)
1936 {
1937 hwsim_check_magic(vif);
1938 hwsim_check_chanctx_magic(ctx);
1939 }
1940
1941 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
1942 "tx_pkts_nic",
1943 "tx_bytes_nic",
1944 "rx_pkts_nic",
1945 "rx_bytes_nic",
1946 "d_tx_dropped",
1947 "d_tx_failed",
1948 "d_ps_mode",
1949 "d_group",
1950 "d_tx_power",
1951 };
1952
1953 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
1954
1955 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
1956 struct ieee80211_vif *vif,
1957 u32 sset, u8 *data)
1958 {
1959 if (sset == ETH_SS_STATS)
1960 memcpy(data, *mac80211_hwsim_gstrings_stats,
1961 sizeof(mac80211_hwsim_gstrings_stats));
1962 }
1963
1964 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
1965 struct ieee80211_vif *vif, int sset)
1966 {
1967 if (sset == ETH_SS_STATS)
1968 return MAC80211_HWSIM_SSTATS_LEN;
1969 return 0;
1970 }
1971
1972 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
1973 struct ieee80211_vif *vif,
1974 struct ethtool_stats *stats, u64 *data)
1975 {
1976 struct mac80211_hwsim_data *ar = hw->priv;
1977 int i = 0;
1978
1979 data[i++] = ar->tx_pkts;
1980 data[i++] = ar->tx_bytes;
1981 data[i++] = ar->rx_pkts;
1982 data[i++] = ar->rx_bytes;
1983 data[i++] = ar->tx_dropped;
1984 data[i++] = ar->tx_failed;
1985 data[i++] = ar->ps;
1986 data[i++] = ar->group;
1987 data[i++] = ar->power_level;
1988
1989 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
1990 }
1991
1992 static const struct ieee80211_ops mac80211_hwsim_ops = {
1993 .tx = mac80211_hwsim_tx,
1994 .start = mac80211_hwsim_start,
1995 .stop = mac80211_hwsim_stop,
1996 .add_interface = mac80211_hwsim_add_interface,
1997 .change_interface = mac80211_hwsim_change_interface,
1998 .remove_interface = mac80211_hwsim_remove_interface,
1999 .config = mac80211_hwsim_config,
2000 .configure_filter = mac80211_hwsim_configure_filter,
2001 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2002 .sta_add = mac80211_hwsim_sta_add,
2003 .sta_remove = mac80211_hwsim_sta_remove,
2004 .sta_notify = mac80211_hwsim_sta_notify,
2005 .set_tim = mac80211_hwsim_set_tim,
2006 .conf_tx = mac80211_hwsim_conf_tx,
2007 .get_survey = mac80211_hwsim_get_survey,
2008 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2009 .ampdu_action = mac80211_hwsim_ampdu_action,
2010 .sw_scan_start = mac80211_hwsim_sw_scan,
2011 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2012 .flush = mac80211_hwsim_flush,
2013 .get_tsf = mac80211_hwsim_get_tsf,
2014 .set_tsf = mac80211_hwsim_set_tsf,
2015 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2016 .get_et_stats = mac80211_hwsim_get_et_stats,
2017 .get_et_strings = mac80211_hwsim_get_et_strings,
2018 };
2019
2020 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2021
2022 static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
2023 const struct ieee80211_regdomain *regd,
2024 bool reg_strict, bool p2p_device,
2025 bool use_chanctx, bool destroy_on_close,
2026 u32 portid, const char *hwname)
2027 {
2028 int err;
2029 u8 addr[ETH_ALEN];
2030 struct mac80211_hwsim_data *data;
2031 struct ieee80211_hw *hw;
2032 enum ieee80211_band band;
2033 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2034 int idx;
2035
2036 if (WARN_ON(channels > 1 && !use_chanctx))
2037 return -EINVAL;
2038
2039 spin_lock_bh(&hwsim_radio_lock);
2040 idx = hwsim_radio_idx++;
2041 spin_unlock_bh(&hwsim_radio_lock);
2042
2043 if (use_chanctx)
2044 ops = &mac80211_hwsim_mchan_ops;
2045 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, hwname);
2046 if (!hw) {
2047 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2048 err = -ENOMEM;
2049 goto failed;
2050 }
2051 data = hw->priv;
2052 data->hw = hw;
2053
2054 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2055 if (IS_ERR(data->dev)) {
2056 printk(KERN_DEBUG
2057 "mac80211_hwsim: device_create failed (%ld)\n",
2058 PTR_ERR(data->dev));
2059 err = -ENOMEM;
2060 goto failed_drvdata;
2061 }
2062 data->dev->driver = &mac80211_hwsim_driver.driver;
2063 err = device_bind_driver(data->dev);
2064 if (err != 0) {
2065 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2066 err);
2067 goto failed_hw;
2068 }
2069
2070 skb_queue_head_init(&data->pending);
2071
2072 SET_IEEE80211_DEV(hw, data->dev);
2073 memset(addr, 0, ETH_ALEN);
2074 addr[0] = 0x02;
2075 addr[3] = idx >> 8;
2076 addr[4] = idx;
2077 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2078 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2079 data->addresses[1].addr[0] |= 0x40;
2080 hw->wiphy->n_addresses = 2;
2081 hw->wiphy->addresses = data->addresses;
2082
2083 data->channels = channels;
2084 data->use_chanctx = use_chanctx;
2085 data->idx = idx;
2086 data->destroy_on_close = destroy_on_close;
2087 data->portid = portid;
2088
2089 if (data->use_chanctx) {
2090 hw->wiphy->max_scan_ssids = 255;
2091 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2092 hw->wiphy->max_remain_on_channel_duration = 1000;
2093 /* For channels > 1 DFS is not allowed */
2094 hw->wiphy->n_iface_combinations = 1;
2095 hw->wiphy->iface_combinations = &data->if_combination;
2096 if (p2p_device)
2097 data->if_combination = hwsim_if_comb_p2p_dev[0];
2098 else
2099 data->if_combination = hwsim_if_comb[0];
2100 data->if_combination.num_different_channels = data->channels;
2101 } else if (p2p_device) {
2102 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2103 hw->wiphy->n_iface_combinations =
2104 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2105 } else {
2106 hw->wiphy->iface_combinations = hwsim_if_comb;
2107 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2108 }
2109
2110 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2111 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2112
2113 hw->queues = 5;
2114 hw->offchannel_tx_hw_queue = 4;
2115 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2116 BIT(NL80211_IFTYPE_AP) |
2117 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2118 BIT(NL80211_IFTYPE_P2P_GO) |
2119 BIT(NL80211_IFTYPE_ADHOC) |
2120 BIT(NL80211_IFTYPE_MESH_POINT);
2121
2122 if (p2p_device)
2123 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2124
2125 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2126 IEEE80211_HW_SIGNAL_DBM |
2127 IEEE80211_HW_AMPDU_AGGREGATION |
2128 IEEE80211_HW_WANT_MONITOR_VIF |
2129 IEEE80211_HW_QUEUE_CONTROL |
2130 IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2131 IEEE80211_HW_CHANCTX_STA_CSA;
2132 if (rctbl)
2133 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2134
2135 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2136 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2137 WIPHY_FLAG_AP_UAPSD |
2138 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2139 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2140 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2141 NL80211_FEATURE_STATIC_SMPS |
2142 NL80211_FEATURE_DYNAMIC_SMPS;
2143
2144 /* ask mac80211 to reserve space for magic */
2145 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2146 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2147 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2148
2149 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2150 sizeof(hwsim_channels_2ghz));
2151 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2152 sizeof(hwsim_channels_5ghz));
2153 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2154
2155 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2156 struct ieee80211_supported_band *sband = &data->bands[band];
2157 switch (band) {
2158 case IEEE80211_BAND_2GHZ:
2159 sband->channels = data->channels_2ghz;
2160 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2161 sband->bitrates = data->rates;
2162 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2163 break;
2164 case IEEE80211_BAND_5GHZ:
2165 sband->channels = data->channels_5ghz;
2166 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2167 sband->bitrates = data->rates + 4;
2168 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2169 break;
2170 default:
2171 continue;
2172 }
2173
2174 sband->ht_cap.ht_supported = true;
2175 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2176 IEEE80211_HT_CAP_GRN_FLD |
2177 IEEE80211_HT_CAP_SGI_40 |
2178 IEEE80211_HT_CAP_DSSSCCK40;
2179 sband->ht_cap.ampdu_factor = 0x3;
2180 sband->ht_cap.ampdu_density = 0x6;
2181 memset(&sband->ht_cap.mcs, 0,
2182 sizeof(sband->ht_cap.mcs));
2183 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2184 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2185 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2186
2187 hw->wiphy->bands[band] = sband;
2188
2189 sband->vht_cap.vht_supported = true;
2190 sband->vht_cap.cap =
2191 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2192 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2193 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2194 IEEE80211_VHT_CAP_RXLDPC |
2195 IEEE80211_VHT_CAP_SHORT_GI_80 |
2196 IEEE80211_VHT_CAP_SHORT_GI_160 |
2197 IEEE80211_VHT_CAP_TXSTBC |
2198 IEEE80211_VHT_CAP_RXSTBC_1 |
2199 IEEE80211_VHT_CAP_RXSTBC_2 |
2200 IEEE80211_VHT_CAP_RXSTBC_3 |
2201 IEEE80211_VHT_CAP_RXSTBC_4 |
2202 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2203 sband->vht_cap.vht_mcs.rx_mcs_map =
2204 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2205 IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2206 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2207 IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2208 IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2209 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2210 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2211 IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2212 sband->vht_cap.vht_mcs.tx_mcs_map =
2213 sband->vht_cap.vht_mcs.rx_mcs_map;
2214 }
2215
2216 /* By default all radios belong to the first group */
2217 data->group = 1;
2218 mutex_init(&data->mutex);
2219
2220 /* Enable frame retransmissions for lossy channels */
2221 hw->max_rates = 4;
2222 hw->max_rate_tries = 11;
2223
2224 if (reg_strict)
2225 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2226 if (regd) {
2227 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2228 wiphy_apply_custom_regulatory(hw->wiphy, regd);
2229 /* give the regulatory workqueue a chance to run */
2230 schedule_timeout_interruptible(1);
2231 }
2232
2233 err = ieee80211_register_hw(hw);
2234 if (err < 0) {
2235 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2236 err);
2237 goto failed_hw;
2238 }
2239
2240 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2241
2242 if (reg_alpha2)
2243 regulatory_hint(hw->wiphy, reg_alpha2);
2244
2245 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2246 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2247 debugfs_create_file("group", 0666, data->debugfs, data,
2248 &hwsim_fops_group);
2249 if (!data->use_chanctx)
2250 debugfs_create_file("dfs_simulate_radar", 0222,
2251 data->debugfs,
2252 data, &hwsim_simulate_radar);
2253
2254 tasklet_hrtimer_init(&data->beacon_timer,
2255 mac80211_hwsim_beacon,
2256 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2257
2258 spin_lock_bh(&hwsim_radio_lock);
2259 list_add_tail(&data->list, &hwsim_radios);
2260 spin_unlock_bh(&hwsim_radio_lock);
2261
2262 return idx;
2263
2264 failed_hw:
2265 device_unregister(data->dev);
2266 failed_drvdata:
2267 ieee80211_free_hw(hw);
2268 failed:
2269 return err;
2270 }
2271
2272 static void mac80211_hwsim_destroy_radio(struct mac80211_hwsim_data *data)
2273 {
2274 debugfs_remove_recursive(data->debugfs);
2275 ieee80211_unregister_hw(data->hw);
2276 device_release_driver(data->dev);
2277 device_unregister(data->dev);
2278 ieee80211_free_hw(data->hw);
2279 }
2280
2281 static void mac80211_hwsim_free(void)
2282 {
2283 struct mac80211_hwsim_data *data;
2284
2285 spin_lock_bh(&hwsim_radio_lock);
2286 while ((data = list_first_entry_or_null(&hwsim_radios,
2287 struct mac80211_hwsim_data,
2288 list))) {
2289 list_del(&data->list);
2290 spin_unlock_bh(&hwsim_radio_lock);
2291 mac80211_hwsim_destroy_radio(data);
2292 spin_lock_bh(&hwsim_radio_lock);
2293 }
2294 spin_unlock_bh(&hwsim_radio_lock);
2295 class_destroy(hwsim_class);
2296 }
2297
2298 static const struct net_device_ops hwsim_netdev_ops = {
2299 .ndo_start_xmit = hwsim_mon_xmit,
2300 .ndo_change_mtu = eth_change_mtu,
2301 .ndo_set_mac_address = eth_mac_addr,
2302 .ndo_validate_addr = eth_validate_addr,
2303 };
2304
2305 static void hwsim_mon_setup(struct net_device *dev)
2306 {
2307 dev->netdev_ops = &hwsim_netdev_ops;
2308 dev->destructor = free_netdev;
2309 ether_setup(dev);
2310 dev->tx_queue_len = 0;
2311 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2312 memset(dev->dev_addr, 0, ETH_ALEN);
2313 dev->dev_addr[0] = 0x12;
2314 }
2315
2316 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2317 {
2318 struct mac80211_hwsim_data *data;
2319 bool _found = false;
2320
2321 spin_lock_bh(&hwsim_radio_lock);
2322 list_for_each_entry(data, &hwsim_radios, list) {
2323 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2324 _found = true;
2325 break;
2326 }
2327 }
2328 spin_unlock_bh(&hwsim_radio_lock);
2329
2330 if (!_found)
2331 return NULL;
2332
2333 return data;
2334 }
2335
2336 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2337 struct genl_info *info)
2338 {
2339
2340 struct ieee80211_hdr *hdr;
2341 struct mac80211_hwsim_data *data2;
2342 struct ieee80211_tx_info *txi;
2343 struct hwsim_tx_rate *tx_attempts;
2344 unsigned long ret_skb_ptr;
2345 struct sk_buff *skb, *tmp;
2346 const u8 *src;
2347 unsigned int hwsim_flags;
2348 int i;
2349 bool found = false;
2350
2351 if (info->snd_portid != wmediumd_portid)
2352 return -EINVAL;
2353
2354 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2355 !info->attrs[HWSIM_ATTR_FLAGS] ||
2356 !info->attrs[HWSIM_ATTR_COOKIE] ||
2357 !info->attrs[HWSIM_ATTR_TX_INFO])
2358 goto out;
2359
2360 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2361 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2362 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2363
2364 data2 = get_hwsim_data_ref_from_addr(src);
2365 if (!data2)
2366 goto out;
2367
2368 /* look for the skb matching the cookie passed back from user */
2369 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2370 if ((unsigned long)skb == ret_skb_ptr) {
2371 skb_unlink(skb, &data2->pending);
2372 found = true;
2373 break;
2374 }
2375 }
2376
2377 /* not found */
2378 if (!found)
2379 goto out;
2380
2381 /* Tx info received because the frame was broadcasted on user space,
2382 so we get all the necessary info: tx attempts and skb control buff */
2383
2384 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2385 info->attrs[HWSIM_ATTR_TX_INFO]);
2386
2387 /* now send back TX status */
2388 txi = IEEE80211_SKB_CB(skb);
2389
2390 ieee80211_tx_info_clear_status(txi);
2391
2392 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2393 txi->status.rates[i].idx = tx_attempts[i].idx;
2394 txi->status.rates[i].count = tx_attempts[i].count;
2395 /*txi->status.rates[i].flags = 0;*/
2396 }
2397
2398 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2399
2400 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2401 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2402 if (skb->len >= 16) {
2403 hdr = (struct ieee80211_hdr *) skb->data;
2404 mac80211_hwsim_monitor_ack(data2->channel,
2405 hdr->addr2);
2406 }
2407 txi->flags |= IEEE80211_TX_STAT_ACK;
2408 }
2409 ieee80211_tx_status_irqsafe(data2->hw, skb);
2410 return 0;
2411 out:
2412 return -EINVAL;
2413
2414 }
2415
2416 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2417 struct genl_info *info)
2418 {
2419
2420 struct mac80211_hwsim_data *data2;
2421 struct ieee80211_rx_status rx_status;
2422 const u8 *dst;
2423 int frame_data_len;
2424 void *frame_data;
2425 struct sk_buff *skb = NULL;
2426
2427 if (info->snd_portid != wmediumd_portid)
2428 return -EINVAL;
2429
2430 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2431 !info->attrs[HWSIM_ATTR_FRAME] ||
2432 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2433 !info->attrs[HWSIM_ATTR_SIGNAL])
2434 goto out;
2435
2436 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2437 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2438 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2439
2440 /* Allocate new skb here */
2441 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2442 if (skb == NULL)
2443 goto err;
2444
2445 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2446 goto err;
2447
2448 /* Copy the data */
2449 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2450
2451 data2 = get_hwsim_data_ref_from_addr(dst);
2452 if (!data2)
2453 goto out;
2454
2455 /* check if radio is configured properly */
2456
2457 if (data2->idle || !data2->started)
2458 goto out;
2459
2460 /* A frame is received from user space */
2461 memset(&rx_status, 0, sizeof(rx_status));
2462 rx_status.freq = data2->channel->center_freq;
2463 rx_status.band = data2->channel->band;
2464 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2465 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2466
2467 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2468 data2->rx_pkts++;
2469 data2->rx_bytes += skb->len;
2470 ieee80211_rx_irqsafe(data2->hw, skb);
2471
2472 return 0;
2473 err:
2474 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2475 out:
2476 dev_kfree_skb(skb);
2477 return -EINVAL;
2478 }
2479
2480 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2481 struct genl_info *info)
2482 {
2483 struct mac80211_hwsim_data *data;
2484 int chans = 1;
2485
2486 spin_lock_bh(&hwsim_radio_lock);
2487 list_for_each_entry(data, &hwsim_radios, list)
2488 chans = max(chans, data->channels);
2489 spin_unlock_bh(&hwsim_radio_lock);
2490
2491 /* In the future we should revise the userspace API and allow it
2492 * to set a flag that it does support multi-channel, then we can
2493 * let this pass conditionally on the flag.
2494 * For current userspace, prohibit it since it won't work right.
2495 */
2496 if (chans > 1)
2497 return -EOPNOTSUPP;
2498
2499 if (wmediumd_portid)
2500 return -EBUSY;
2501
2502 wmediumd_portid = info->snd_portid;
2503
2504 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2505 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2506
2507 return 0;
2508 }
2509
2510 static int hwsim_create_radio_nl(struct sk_buff *msg, struct genl_info *info)
2511 {
2512 unsigned int chans = channels;
2513 const char *alpha2 = NULL;
2514 const struct ieee80211_regdomain *regd = NULL;
2515 bool reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2516 bool p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2517 bool destroy_on_close = info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2518 bool use_chanctx;
2519 const char *hwname = NULL;
2520
2521 if (info->attrs[HWSIM_ATTR_CHANNELS])
2522 chans = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2523
2524 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2525 hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2526
2527 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2528 use_chanctx = true;
2529 else
2530 use_chanctx = (chans > 1);
2531
2532 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2533 alpha2 = nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2534
2535 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2536 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2537
2538 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2539 return -EINVAL;
2540 regd = hwsim_world_regdom_custom[idx];
2541 }
2542
2543 return mac80211_hwsim_create_radio(chans, alpha2, regd, reg_strict,
2544 p2p_device, use_chanctx,
2545 destroy_on_close, info->snd_portid,
2546 hwname);
2547 }
2548
2549 static int hwsim_destroy_radio_nl(struct sk_buff *msg, struct genl_info *info)
2550 {
2551 struct mac80211_hwsim_data *data;
2552 s64 idx = -1;
2553 const char *hwname = NULL;
2554
2555 if (info->attrs[HWSIM_ATTR_RADIO_ID])
2556 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2557 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2558 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2559 else
2560 return -EINVAL;
2561
2562 spin_lock_bh(&hwsim_radio_lock);
2563 list_for_each_entry(data, &hwsim_radios, list) {
2564 if (idx >= 0) {
2565 if (data->idx != idx)
2566 continue;
2567 } else {
2568 if (hwname &&
2569 strcmp(hwname, wiphy_name(data->hw->wiphy)))
2570 continue;
2571 }
2572
2573 list_del(&data->list);
2574 spin_unlock_bh(&hwsim_radio_lock);
2575 mac80211_hwsim_destroy_radio(data);
2576 return 0;
2577 }
2578 spin_unlock_bh(&hwsim_radio_lock);
2579
2580 return -ENODEV;
2581 }
2582
2583 /* Generic Netlink operations array */
2584 static const struct genl_ops hwsim_ops[] = {
2585 {
2586 .cmd = HWSIM_CMD_REGISTER,
2587 .policy = hwsim_genl_policy,
2588 .doit = hwsim_register_received_nl,
2589 .flags = GENL_ADMIN_PERM,
2590 },
2591 {
2592 .cmd = HWSIM_CMD_FRAME,
2593 .policy = hwsim_genl_policy,
2594 .doit = hwsim_cloned_frame_received_nl,
2595 },
2596 {
2597 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2598 .policy = hwsim_genl_policy,
2599 .doit = hwsim_tx_info_frame_received_nl,
2600 },
2601 {
2602 .cmd = HWSIM_CMD_CREATE_RADIO,
2603 .policy = hwsim_genl_policy,
2604 .doit = hwsim_create_radio_nl,
2605 .flags = GENL_ADMIN_PERM,
2606 },
2607 {
2608 .cmd = HWSIM_CMD_DESTROY_RADIO,
2609 .policy = hwsim_genl_policy,
2610 .doit = hwsim_destroy_radio_nl,
2611 .flags = GENL_ADMIN_PERM,
2612 },
2613 };
2614
2615 static void destroy_radio(struct work_struct *work)
2616 {
2617 struct mac80211_hwsim_data *data =
2618 container_of(work, struct mac80211_hwsim_data, destroy_work);
2619
2620 mac80211_hwsim_destroy_radio(data);
2621 }
2622
2623 static void remove_user_radios(u32 portid)
2624 {
2625 struct mac80211_hwsim_data *entry, *tmp;
2626
2627 spin_lock_bh(&hwsim_radio_lock);
2628 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
2629 if (entry->destroy_on_close && entry->portid == portid) {
2630 list_del(&entry->list);
2631 INIT_WORK(&entry->destroy_work, destroy_radio);
2632 schedule_work(&entry->destroy_work);
2633 }
2634 }
2635 spin_unlock_bh(&hwsim_radio_lock);
2636 }
2637
2638 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2639 unsigned long state,
2640 void *_notify)
2641 {
2642 struct netlink_notify *notify = _notify;
2643
2644 if (state != NETLINK_URELEASE)
2645 return NOTIFY_DONE;
2646
2647 remove_user_radios(notify->portid);
2648
2649 if (notify->portid == wmediumd_portid) {
2650 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2651 " socket, switching to perfect channel medium\n");
2652 wmediumd_portid = 0;
2653 }
2654 return NOTIFY_DONE;
2655
2656 }
2657
2658 static struct notifier_block hwsim_netlink_notifier = {
2659 .notifier_call = mac80211_hwsim_netlink_notify,
2660 };
2661
2662 static int hwsim_init_netlink(void)
2663 {
2664 int rc;
2665
2666 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2667
2668 rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2669 if (rc)
2670 goto failure;
2671
2672 rc = netlink_register_notifier(&hwsim_netlink_notifier);
2673 if (rc)
2674 goto failure;
2675
2676 return 0;
2677
2678 failure:
2679 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2680 return -EINVAL;
2681 }
2682
2683 static void hwsim_exit_netlink(void)
2684 {
2685 /* unregister the notifier */
2686 netlink_unregister_notifier(&hwsim_netlink_notifier);
2687 /* unregister the family */
2688 genl_unregister_family(&hwsim_genl_family);
2689 }
2690
2691 static int __init init_mac80211_hwsim(void)
2692 {
2693 int i, err;
2694
2695 if (radios < 0 || radios > 100)
2696 return -EINVAL;
2697
2698 if (channels < 1)
2699 return -EINVAL;
2700
2701 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
2702 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
2703 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
2704 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
2705 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
2706 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
2707 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
2708 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
2709 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
2710 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
2711 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
2712 mac80211_hwsim_assign_vif_chanctx;
2713 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
2714 mac80211_hwsim_unassign_vif_chanctx;
2715
2716 spin_lock_init(&hwsim_radio_lock);
2717 INIT_LIST_HEAD(&hwsim_radios);
2718
2719 err = platform_driver_register(&mac80211_hwsim_driver);
2720 if (err)
2721 return err;
2722
2723 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2724 if (IS_ERR(hwsim_class)) {
2725 err = PTR_ERR(hwsim_class);
2726 goto out_unregister_driver;
2727 }
2728
2729 for (i = 0; i < radios; i++) {
2730 const char *reg_alpha2 = NULL;
2731 const struct ieee80211_regdomain *regd = NULL;
2732 bool reg_strict = false;
2733
2734 switch (regtest) {
2735 case HWSIM_REGTEST_DIFF_COUNTRY:
2736 if (i < ARRAY_SIZE(hwsim_alpha2s))
2737 reg_alpha2 = hwsim_alpha2s[i];
2738 break;
2739 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2740 if (!i)
2741 reg_alpha2 = hwsim_alpha2s[0];
2742 break;
2743 case HWSIM_REGTEST_STRICT_ALL:
2744 reg_strict = true;
2745 case HWSIM_REGTEST_DRIVER_REG_ALL:
2746 reg_alpha2 = hwsim_alpha2s[0];
2747 break;
2748 case HWSIM_REGTEST_WORLD_ROAM:
2749 if (i == 0)
2750 regd = &hwsim_world_regdom_custom_01;
2751 break;
2752 case HWSIM_REGTEST_CUSTOM_WORLD:
2753 regd = &hwsim_world_regdom_custom_01;
2754 break;
2755 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2756 if (i == 0)
2757 regd = &hwsim_world_regdom_custom_01;
2758 else if (i == 1)
2759 regd = &hwsim_world_regdom_custom_02;
2760 break;
2761 case HWSIM_REGTEST_STRICT_FOLLOW:
2762 if (i == 0) {
2763 reg_strict = true;
2764 reg_alpha2 = hwsim_alpha2s[0];
2765 }
2766 break;
2767 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2768 if (i == 0) {
2769 reg_strict = true;
2770 reg_alpha2 = hwsim_alpha2s[0];
2771 } else if (i == 1) {
2772 reg_alpha2 = hwsim_alpha2s[1];
2773 }
2774 break;
2775 case HWSIM_REGTEST_ALL:
2776 switch (i) {
2777 case 0:
2778 regd = &hwsim_world_regdom_custom_01;
2779 break;
2780 case 1:
2781 regd = &hwsim_world_regdom_custom_02;
2782 break;
2783 case 2:
2784 reg_alpha2 = hwsim_alpha2s[0];
2785 break;
2786 case 3:
2787 reg_alpha2 = hwsim_alpha2s[1];
2788 break;
2789 case 4:
2790 reg_strict = true;
2791 reg_alpha2 = hwsim_alpha2s[2];
2792 break;
2793 }
2794 break;
2795 default:
2796 break;
2797 }
2798
2799 err = mac80211_hwsim_create_radio(channels, reg_alpha2,
2800 regd, reg_strict,
2801 support_p2p_device,
2802 channels > 1, false, 0, NULL);
2803 if (err < 0)
2804 goto out_free_radios;
2805 }
2806
2807 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
2808 hwsim_mon_setup);
2809 if (hwsim_mon == NULL) {
2810 err = -ENOMEM;
2811 goto out_free_radios;
2812 }
2813
2814 rtnl_lock();
2815 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2816 if (err < 0) {
2817 rtnl_unlock();
2818 goto out_free_radios;
2819 }
2820
2821 err = register_netdevice(hwsim_mon);
2822 if (err < 0) {
2823 rtnl_unlock();
2824 goto out_free_mon;
2825 }
2826 rtnl_unlock();
2827
2828 err = hwsim_init_netlink();
2829 if (err < 0)
2830 goto out_free_mon;
2831
2832 return 0;
2833
2834 out_free_mon:
2835 free_netdev(hwsim_mon);
2836 out_free_radios:
2837 mac80211_hwsim_free();
2838 out_unregister_driver:
2839 platform_driver_unregister(&mac80211_hwsim_driver);
2840 return err;
2841 }
2842 module_init(init_mac80211_hwsim);
2843
2844 static void __exit exit_mac80211_hwsim(void)
2845 {
2846 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2847
2848 hwsim_exit_netlink();
2849
2850 mac80211_hwsim_free();
2851 unregister_netdev(hwsim_mon);
2852 platform_driver_unregister(&mac80211_hwsim_driver);
2853 }
2854 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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