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mm/zsmalloc: allocate exactly size of struct zs_pool
[linux/fpc-iii.git] / drivers / net / wireless / mac80211_hwsim.c
bloba71b9d5e353d6d114c10d712b72f553f6edfe8ec
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 char alpha2[2];
419 const struct ieee80211_regdomain *regd;
420
421 struct ieee80211_channel *tmp_chan;
422 struct delayed_work roc_done;
423 struct delayed_work hw_scan;
424 struct cfg80211_scan_request *hw_scan_request;
425 struct ieee80211_vif *hw_scan_vif;
426 int scan_chan_idx;
427 u8 scan_addr[ETH_ALEN];
428
429 struct ieee80211_channel *channel;
430 u64 beacon_int /* beacon interval in us */;
431 unsigned int rx_filter;
432 bool started, idle, scanning;
433 struct mutex mutex;
434 struct tasklet_hrtimer beacon_timer;
435 enum ps_mode {
436 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
437 } ps;
438 bool ps_poll_pending;
439 struct dentry *debugfs;
440
441 struct sk_buff_head pending; /* packets pending */
442 /*
443 * Only radios in the same group can communicate together (the
444 * channel has to match too). Each bit represents a group. A
445 * radio can be in more than one group.
446 */
447 u64 group;
448
449 int power_level;
450
451 /* difference between this hw's clock and the real clock, in usecs */
452 s64 tsf_offset;
453 s64 bcn_delta;
454 /* absolute beacon transmission time. Used to cover up "tx" delay. */
455 u64 abs_bcn_ts;
456
457 /* Stats */
458 u64 tx_pkts;
459 u64 rx_pkts;
460 u64 tx_bytes;
461 u64 rx_bytes;
462 u64 tx_dropped;
463 u64 tx_failed;
464 };
465
466
467 struct hwsim_radiotap_hdr {
468 struct ieee80211_radiotap_header hdr;
469 __le64 rt_tsft;
470 u8 rt_flags;
471 u8 rt_rate;
472 __le16 rt_channel;
473 __le16 rt_chbitmask;
474 } __packed;
475
476 struct hwsim_radiotap_ack_hdr {
477 struct ieee80211_radiotap_header hdr;
478 u8 rt_flags;
479 u8 pad;
480 __le16 rt_channel;
481 __le16 rt_chbitmask;
482 } __packed;
483
484 /* MAC80211_HWSIM netlinf family */
485 static struct genl_family hwsim_genl_family = {
486 .id = GENL_ID_GENERATE,
487 .hdrsize = 0,
488 .name = "MAC80211_HWSIM",
489 .version = 1,
490 .maxattr = HWSIM_ATTR_MAX,
491 };
492
493 enum hwsim_multicast_groups {
494 HWSIM_MCGRP_CONFIG,
495 };
496
497 static const struct genl_multicast_group hwsim_mcgrps[] = {
498 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
499 };
500
501 /* MAC80211_HWSIM netlink policy */
502
503 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
504 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
505 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
506 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
507 .len = IEEE80211_MAX_DATA_LEN },
508 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
509 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
510 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
511 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
512 .len = IEEE80211_TX_MAX_RATES *
513 sizeof(struct hwsim_tx_rate)},
514 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
515 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
516 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
517 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
518 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
519 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
520 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
521 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
522 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
523 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
524 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
525 };
526
527 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
528 struct sk_buff *skb,
529 struct ieee80211_channel *chan);
530
531 /* sysfs attributes */
532 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
533 {
534 struct mac80211_hwsim_data *data = dat;
535 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
536 struct sk_buff *skb;
537 struct ieee80211_pspoll *pspoll;
538
539 if (!vp->assoc)
540 return;
541
542 wiphy_debug(data->hw->wiphy,
543 "%s: send PS-Poll to %pM for aid %d\n",
544 __func__, vp->bssid, vp->aid);
545
546 skb = dev_alloc_skb(sizeof(*pspoll));
547 if (!skb)
548 return;
549 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
550 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
551 IEEE80211_STYPE_PSPOLL |
552 IEEE80211_FCTL_PM);
553 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
554 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
555 memcpy(pspoll->ta, mac, ETH_ALEN);
556
557 rcu_read_lock();
558 mac80211_hwsim_tx_frame(data->hw, skb,
559 rcu_dereference(vif->chanctx_conf)->def.chan);
560 rcu_read_unlock();
561 }
562
563 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
564 struct ieee80211_vif *vif, int ps)
565 {
566 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
567 struct sk_buff *skb;
568 struct ieee80211_hdr *hdr;
569
570 if (!vp->assoc)
571 return;
572
573 wiphy_debug(data->hw->wiphy,
574 "%s: send data::nullfunc to %pM ps=%d\n",
575 __func__, vp->bssid, ps);
576
577 skb = dev_alloc_skb(sizeof(*hdr));
578 if (!skb)
579 return;
580 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
581 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
582 IEEE80211_STYPE_NULLFUNC |
583 (ps ? IEEE80211_FCTL_PM : 0));
584 hdr->duration_id = cpu_to_le16(0);
585 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
586 memcpy(hdr->addr2, mac, ETH_ALEN);
587 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
588
589 rcu_read_lock();
590 mac80211_hwsim_tx_frame(data->hw, skb,
591 rcu_dereference(vif->chanctx_conf)->def.chan);
592 rcu_read_unlock();
593 }
594
595
596 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
597 struct ieee80211_vif *vif)
598 {
599 struct mac80211_hwsim_data *data = dat;
600 hwsim_send_nullfunc(data, mac, vif, 1);
601 }
602
603 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
604 struct ieee80211_vif *vif)
605 {
606 struct mac80211_hwsim_data *data = dat;
607 hwsim_send_nullfunc(data, mac, vif, 0);
608 }
609
610 static int hwsim_fops_ps_read(void *dat, u64 *val)
611 {
612 struct mac80211_hwsim_data *data = dat;
613 *val = data->ps;
614 return 0;
615 }
616
617 static int hwsim_fops_ps_write(void *dat, u64 val)
618 {
619 struct mac80211_hwsim_data *data = dat;
620 enum ps_mode old_ps;
621
622 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
623 val != PS_MANUAL_POLL)
624 return -EINVAL;
625
626 old_ps = data->ps;
627 data->ps = val;
628
629 if (val == PS_MANUAL_POLL) {
630 ieee80211_iterate_active_interfaces(data->hw,
631 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(data->hw,
636 IEEE80211_IFACE_ITER_NORMAL,
637 hwsim_send_nullfunc_ps,
638 data);
639 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
640 ieee80211_iterate_active_interfaces(data->hw,
641 IEEE80211_IFACE_ITER_NORMAL,
642 hwsim_send_nullfunc_no_ps,
643 data);
644 }
645
646 return 0;
647 }
648
649 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
650 "%llu\n");
651
652 static int hwsim_write_simulate_radar(void *dat, u64 val)
653 {
654 struct mac80211_hwsim_data *data = dat;
655
656 ieee80211_radar_detected(data->hw);
657
658 return 0;
659 }
660
661 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
662 hwsim_write_simulate_radar, "%llu\n");
663
664 static int hwsim_fops_group_read(void *dat, u64 *val)
665 {
666 struct mac80211_hwsim_data *data = dat;
667 *val = data->group;
668 return 0;
669 }
670
671 static int hwsim_fops_group_write(void *dat, u64 val)
672 {
673 struct mac80211_hwsim_data *data = dat;
674 data->group = val;
675 return 0;
676 }
677
678 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
679 hwsim_fops_group_read, hwsim_fops_group_write,
680 "%llx\n");
681
682 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
683 struct net_device *dev)
684 {
685 /* TODO: allow packet injection */
686 dev_kfree_skb(skb);
687 return NETDEV_TX_OK;
688 }
689
690 static inline u64 mac80211_hwsim_get_tsf_raw(void)
691 {
692 return ktime_to_us(ktime_get_real());
693 }
694
695 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
696 {
697 u64 now = mac80211_hwsim_get_tsf_raw();
698 return cpu_to_le64(now + data->tsf_offset);
699 }
700
701 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
702 struct ieee80211_vif *vif)
703 {
704 struct mac80211_hwsim_data *data = hw->priv;
705 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
706 }
707
708 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
709 struct ieee80211_vif *vif, u64 tsf)
710 {
711 struct mac80211_hwsim_data *data = hw->priv;
712 u64 now = mac80211_hwsim_get_tsf(hw, vif);
713 u32 bcn_int = data->beacon_int;
714 u64 delta = abs64(tsf - now);
715
716 /* adjust after beaconing with new timestamp at old TBTT */
717 if (tsf > now) {
718 data->tsf_offset += delta;
719 data->bcn_delta = do_div(delta, bcn_int);
720 } else {
721 data->tsf_offset -= delta;
722 data->bcn_delta = -do_div(delta, bcn_int);
723 }
724 }
725
726 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
727 struct sk_buff *tx_skb,
728 struct ieee80211_channel *chan)
729 {
730 struct mac80211_hwsim_data *data = hw->priv;
731 struct sk_buff *skb;
732 struct hwsim_radiotap_hdr *hdr;
733 u16 flags;
734 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
735 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
736
737 if (!netif_running(hwsim_mon))
738 return;
739
740 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
741 if (skb == NULL)
742 return;
743
744 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
745 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
746 hdr->hdr.it_pad = 0;
747 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
748 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
749 (1 << IEEE80211_RADIOTAP_RATE) |
750 (1 << IEEE80211_RADIOTAP_TSFT) |
751 (1 << IEEE80211_RADIOTAP_CHANNEL));
752 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
753 hdr->rt_flags = 0;
754 hdr->rt_rate = txrate->bitrate / 5;
755 hdr->rt_channel = cpu_to_le16(chan->center_freq);
756 flags = IEEE80211_CHAN_2GHZ;
757 if (txrate->flags & IEEE80211_RATE_ERP_G)
758 flags |= IEEE80211_CHAN_OFDM;
759 else
760 flags |= IEEE80211_CHAN_CCK;
761 hdr->rt_chbitmask = cpu_to_le16(flags);
762
763 skb->dev = hwsim_mon;
764 skb_set_mac_header(skb, 0);
765 skb->ip_summed = CHECKSUM_UNNECESSARY;
766 skb->pkt_type = PACKET_OTHERHOST;
767 skb->protocol = htons(ETH_P_802_2);
768 memset(skb->cb, 0, sizeof(skb->cb));
769 netif_rx(skb);
770 }
771
772
773 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
774 const u8 *addr)
775 {
776 struct sk_buff *skb;
777 struct hwsim_radiotap_ack_hdr *hdr;
778 u16 flags;
779 struct ieee80211_hdr *hdr11;
780
781 if (!netif_running(hwsim_mon))
782 return;
783
784 skb = dev_alloc_skb(100);
785 if (skb == NULL)
786 return;
787
788 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
789 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
790 hdr->hdr.it_pad = 0;
791 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
792 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
793 (1 << IEEE80211_RADIOTAP_CHANNEL));
794 hdr->rt_flags = 0;
795 hdr->pad = 0;
796 hdr->rt_channel = cpu_to_le16(chan->center_freq);
797 flags = IEEE80211_CHAN_2GHZ;
798 hdr->rt_chbitmask = cpu_to_le16(flags);
799
800 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
801 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
802 IEEE80211_STYPE_ACK);
803 hdr11->duration_id = cpu_to_le16(0);
804 memcpy(hdr11->addr1, addr, ETH_ALEN);
805
806 skb->dev = hwsim_mon;
807 skb_set_mac_header(skb, 0);
808 skb->ip_summed = CHECKSUM_UNNECESSARY;
809 skb->pkt_type = PACKET_OTHERHOST;
810 skb->protocol = htons(ETH_P_802_2);
811 memset(skb->cb, 0, sizeof(skb->cb));
812 netif_rx(skb);
813 }
814
815 struct mac80211_hwsim_addr_match_data {
816 u8 addr[ETH_ALEN];
817 bool ret;
818 };
819
820 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
821 struct ieee80211_vif *vif)
822 {
823 struct mac80211_hwsim_addr_match_data *md = data;
824
825 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
826 md->ret = true;
827 }
828
829 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
830 const u8 *addr)
831 {
832 struct mac80211_hwsim_addr_match_data md = {
833 .ret = false,
834 };
835
836 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
837 return true;
838
839 memcpy(md.addr, addr, ETH_ALEN);
840
841 ieee80211_iterate_active_interfaces_atomic(data->hw,
842 IEEE80211_IFACE_ITER_NORMAL,
843 mac80211_hwsim_addr_iter,
844 &md);
845
846 return md.ret;
847 }
848
849 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
850 struct sk_buff *skb)
851 {
852 switch (data->ps) {
853 case PS_DISABLED:
854 return true;
855 case PS_ENABLED:
856 return false;
857 case PS_AUTO_POLL:
858 /* TODO: accept (some) Beacons by default and other frames only
859 * if pending PS-Poll has been sent */
860 return true;
861 case PS_MANUAL_POLL:
862 /* Allow unicast frames to own address if there is a pending
863 * PS-Poll */
864 if (data->ps_poll_pending &&
865 mac80211_hwsim_addr_match(data, skb->data + 4)) {
866 data->ps_poll_pending = false;
867 return true;
868 }
869 return false;
870 }
871
872 return true;
873 }
874
875 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
876 struct sk_buff *my_skb,
877 int dst_portid)
878 {
879 struct sk_buff *skb;
880 struct mac80211_hwsim_data *data = hw->priv;
881 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
882 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
883 void *msg_head;
884 unsigned int hwsim_flags = 0;
885 int i;
886 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
887
888 if (data->ps != PS_DISABLED)
889 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
890 /* If the queue contains MAX_QUEUE skb's drop some */
891 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
892 /* Droping until WARN_QUEUE level */
893 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
894 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
895 data->tx_dropped++;
896 }
897 }
898
899 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
900 if (skb == NULL)
901 goto nla_put_failure;
902
903 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
904 HWSIM_CMD_FRAME);
905 if (msg_head == NULL) {
906 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
907 goto nla_put_failure;
908 }
909
910 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
911 ETH_ALEN, data->addresses[1].addr))
912 goto nla_put_failure;
913
914 /* We get the skb->data */
915 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
916 goto nla_put_failure;
917
918 /* We get the flags for this transmission, and we translate them to
919 wmediumd flags */
920
921 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
922 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
923
924 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
925 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
926
927 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
928 goto nla_put_failure;
929
930 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
931 goto nla_put_failure;
932
933 /* We get the tx control (rate and retries) info*/
934
935 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
936 tx_attempts[i].idx = info->status.rates[i].idx;
937 tx_attempts[i].count = info->status.rates[i].count;
938 }
939
940 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
941 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
942 tx_attempts))
943 goto nla_put_failure;
944
945 /* We create a cookie to identify this skb */
946 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
947 goto nla_put_failure;
948
949 genlmsg_end(skb, msg_head);
950 genlmsg_unicast(&init_net, skb, dst_portid);
951
952 /* Enqueue the packet */
953 skb_queue_tail(&data->pending, my_skb);
954 data->tx_pkts++;
955 data->tx_bytes += my_skb->len;
956 return;
957
958 nla_put_failure:
959 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
960 ieee80211_free_txskb(hw, my_skb);
961 data->tx_failed++;
962 }
963
964 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
965 struct ieee80211_channel *c2)
966 {
967 if (!c1 || !c2)
968 return false;
969
970 return c1->center_freq == c2->center_freq;
971 }
972
973 struct tx_iter_data {
974 struct ieee80211_channel *channel;
975 bool receive;
976 };
977
978 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
979 struct ieee80211_vif *vif)
980 {
981 struct tx_iter_data *data = _data;
982
983 if (!vif->chanctx_conf)
984 return;
985
986 if (!hwsim_chans_compat(data->channel,
987 rcu_dereference(vif->chanctx_conf)->def.chan))
988 return;
989
990 data->receive = true;
991 }
992
993 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
994 {
995 /*
996 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
997 * e.g. like this:
998 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
999 * (but you should use a valid OUI, not that)
1000 *
1001 * If anyone wants to 'donate' a radiotap OUI/subns code
1002 * please send a patch removing this #ifdef and changing
1003 * the values accordingly.
1004 */
1005 #ifdef HWSIM_RADIOTAP_OUI
1006 struct ieee80211_vendor_radiotap *rtap;
1007
1008 /*
1009 * Note that this code requires the headroom in the SKB
1010 * that was allocated earlier.
1011 */
1012 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1013 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1014 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1015 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1016 rtap->subns = 127;
1017
1018 /*
1019 * Radiotap vendor namespaces can (and should) also be
1020 * split into fields by using the standard radiotap
1021 * presence bitmap mechanism. Use just BIT(0) here for
1022 * the presence bitmap.
1023 */
1024 rtap->present = BIT(0);
1025 /* We have 8 bytes of (dummy) data */
1026 rtap->len = 8;
1027 /* For testing, also require it to be aligned */
1028 rtap->align = 8;
1029 /* And also test that padding works, 4 bytes */
1030 rtap->pad = 4;
1031 /* push the data */
1032 memcpy(rtap->data, "ABCDEFGH", 8);
1033 /* make sure to clear padding, mac80211 doesn't */
1034 memset(rtap->data + 8, 0, 4);
1035
1036 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1037 #endif
1038 }
1039
1040 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1041 struct sk_buff *skb,
1042 struct ieee80211_channel *chan)
1043 {
1044 struct mac80211_hwsim_data *data = hw->priv, *data2;
1045 bool ack = false;
1046 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1047 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1048 struct ieee80211_rx_status rx_status;
1049 u64 now;
1050
1051 memset(&rx_status, 0, sizeof(rx_status));
1052 rx_status.flag |= RX_FLAG_MACTIME_START;
1053 rx_status.freq = chan->center_freq;
1054 rx_status.band = chan->band;
1055 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1056 rx_status.rate_idx =
1057 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1058 rx_status.vht_nss =
1059 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1060 rx_status.flag |= RX_FLAG_VHT;
1061 } else {
1062 rx_status.rate_idx = info->control.rates[0].idx;
1063 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1064 rx_status.flag |= RX_FLAG_HT;
1065 }
1066 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1067 rx_status.flag |= RX_FLAG_40MHZ;
1068 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1069 rx_status.flag |= RX_FLAG_SHORT_GI;
1070 /* TODO: simulate real signal strength (and optional packet loss) */
1071 rx_status.signal = data->power_level - 50;
1072
1073 if (data->ps != PS_DISABLED)
1074 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1075
1076 /* release the skb's source info */
1077 skb_orphan(skb);
1078 skb_dst_drop(skb);
1079 skb->mark = 0;
1080 secpath_reset(skb);
1081 nf_reset(skb);
1082
1083 /*
1084 * Get absolute mactime here so all HWs RX at the "same time", and
1085 * absolute TX time for beacon mactime so the timestamp matches.
1086 * Giving beacons a different mactime than non-beacons looks messy, but
1087 * it helps the Toffset be exact and a ~10us mactime discrepancy
1088 * probably doesn't really matter.
1089 */
1090 if (ieee80211_is_beacon(hdr->frame_control) ||
1091 ieee80211_is_probe_resp(hdr->frame_control))
1092 now = data->abs_bcn_ts;
1093 else
1094 now = mac80211_hwsim_get_tsf_raw();
1095
1096 /* Copy skb to all enabled radios that are on the current frequency */
1097 spin_lock(&hwsim_radio_lock);
1098 list_for_each_entry(data2, &hwsim_radios, list) {
1099 struct sk_buff *nskb;
1100 struct tx_iter_data tx_iter_data = {
1101 .receive = false,
1102 .channel = chan,
1103 };
1104
1105 if (data == data2)
1106 continue;
1107
1108 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1109 !hwsim_ps_rx_ok(data2, skb))
1110 continue;
1111
1112 if (!(data->group & data2->group))
1113 continue;
1114
1115 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1116 !hwsim_chans_compat(chan, data2->channel)) {
1117 ieee80211_iterate_active_interfaces_atomic(
1118 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1119 mac80211_hwsim_tx_iter, &tx_iter_data);
1120 if (!tx_iter_data.receive)
1121 continue;
1122 }
1123
1124 /*
1125 * reserve some space for our vendor and the normal
1126 * radiotap header, since we're copying anyway
1127 */
1128 if (skb->len < PAGE_SIZE && paged_rx) {
1129 struct page *page = alloc_page(GFP_ATOMIC);
1130
1131 if (!page)
1132 continue;
1133
1134 nskb = dev_alloc_skb(128);
1135 if (!nskb) {
1136 __free_page(page);
1137 continue;
1138 }
1139
1140 memcpy(page_address(page), skb->data, skb->len);
1141 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1142 } else {
1143 nskb = skb_copy(skb, GFP_ATOMIC);
1144 if (!nskb)
1145 continue;
1146 }
1147
1148 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1149 ack = true;
1150
1151 rx_status.mactime = now + data2->tsf_offset;
1152
1153 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1154
1155 mac80211_hwsim_add_vendor_rtap(nskb);
1156
1157 data2->rx_pkts++;
1158 data2->rx_bytes += nskb->len;
1159 ieee80211_rx_irqsafe(data2->hw, nskb);
1160 }
1161 spin_unlock(&hwsim_radio_lock);
1162
1163 return ack;
1164 }
1165
1166 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1167 struct ieee80211_tx_control *control,
1168 struct sk_buff *skb)
1169 {
1170 struct mac80211_hwsim_data *data = hw->priv;
1171 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1172 struct ieee80211_chanctx_conf *chanctx_conf;
1173 struct ieee80211_channel *channel;
1174 bool ack;
1175 u32 _portid;
1176
1177 if (WARN_ON(skb->len < 10)) {
1178 /* Should not happen; just a sanity check for addr1 use */
1179 ieee80211_free_txskb(hw, skb);
1180 return;
1181 }
1182
1183 if (!data->use_chanctx) {
1184 channel = data->channel;
1185 } else if (txi->hw_queue == 4) {
1186 channel = data->tmp_chan;
1187 } else {
1188 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1189 if (chanctx_conf)
1190 channel = chanctx_conf->def.chan;
1191 else
1192 channel = NULL;
1193 }
1194
1195 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1196 ieee80211_free_txskb(hw, skb);
1197 return;
1198 }
1199
1200 if (data->idle && !data->tmp_chan) {
1201 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1202 ieee80211_free_txskb(hw, skb);
1203 return;
1204 }
1205
1206 if (txi->control.vif)
1207 hwsim_check_magic(txi->control.vif);
1208 if (control->sta)
1209 hwsim_check_sta_magic(control->sta);
1210
1211 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1212 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1213 txi->control.rates,
1214 ARRAY_SIZE(txi->control.rates));
1215
1216 txi->rate_driver_data[0] = channel;
1217 mac80211_hwsim_monitor_rx(hw, skb, channel);
1218
1219 /* wmediumd mode check */
1220 _portid = ACCESS_ONCE(wmediumd_portid);
1221
1222 if (_portid)
1223 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1224
1225 /* NO wmediumd detected, perfect medium simulation */
1226 data->tx_pkts++;
1227 data->tx_bytes += skb->len;
1228 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1229
1230 if (ack && skb->len >= 16) {
1231 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1232 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1233 }
1234
1235 ieee80211_tx_info_clear_status(txi);
1236
1237 /* frame was transmitted at most favorable rate at first attempt */
1238 txi->control.rates[0].count = 1;
1239 txi->control.rates[1].idx = -1;
1240
1241 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1242 txi->flags |= IEEE80211_TX_STAT_ACK;
1243 ieee80211_tx_status_irqsafe(hw, skb);
1244 }
1245
1246
1247 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1248 {
1249 struct mac80211_hwsim_data *data = hw->priv;
1250 wiphy_debug(hw->wiphy, "%s\n", __func__);
1251 data->started = true;
1252 return 0;
1253 }
1254
1255
1256 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1257 {
1258 struct mac80211_hwsim_data *data = hw->priv;
1259 data->started = false;
1260 tasklet_hrtimer_cancel(&data->beacon_timer);
1261 wiphy_debug(hw->wiphy, "%s\n", __func__);
1262 }
1263
1264
1265 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1266 struct ieee80211_vif *vif)
1267 {
1268 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1269 __func__, ieee80211_vif_type_p2p(vif),
1270 vif->addr);
1271 hwsim_set_magic(vif);
1272
1273 vif->cab_queue = 0;
1274 vif->hw_queue[IEEE80211_AC_VO] = 0;
1275 vif->hw_queue[IEEE80211_AC_VI] = 1;
1276 vif->hw_queue[IEEE80211_AC_BE] = 2;
1277 vif->hw_queue[IEEE80211_AC_BK] = 3;
1278
1279 return 0;
1280 }
1281
1282
1283 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1284 struct ieee80211_vif *vif,
1285 enum nl80211_iftype newtype,
1286 bool newp2p)
1287 {
1288 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1289 wiphy_debug(hw->wiphy,
1290 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1291 __func__, ieee80211_vif_type_p2p(vif),
1292 newtype, vif->addr);
1293 hwsim_check_magic(vif);
1294
1295 /*
1296 * interface may change from non-AP to AP in
1297 * which case this needs to be set up again
1298 */
1299 vif->cab_queue = 0;
1300
1301 return 0;
1302 }
1303
1304 static void mac80211_hwsim_remove_interface(
1305 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1306 {
1307 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1308 __func__, ieee80211_vif_type_p2p(vif),
1309 vif->addr);
1310 hwsim_check_magic(vif);
1311 hwsim_clear_magic(vif);
1312 }
1313
1314 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1315 struct sk_buff *skb,
1316 struct ieee80211_channel *chan)
1317 {
1318 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1319
1320 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1321 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1322 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1323 txi->control.rates,
1324 ARRAY_SIZE(txi->control.rates));
1325 }
1326
1327 mac80211_hwsim_monitor_rx(hw, skb, chan);
1328
1329 if (_pid)
1330 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1331
1332 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1333 dev_kfree_skb(skb);
1334 }
1335
1336 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1337 struct ieee80211_vif *vif)
1338 {
1339 struct mac80211_hwsim_data *data = arg;
1340 struct ieee80211_hw *hw = data->hw;
1341 struct ieee80211_tx_info *info;
1342 struct ieee80211_rate *txrate;
1343 struct ieee80211_mgmt *mgmt;
1344 struct sk_buff *skb;
1345
1346 hwsim_check_magic(vif);
1347
1348 if (vif->type != NL80211_IFTYPE_AP &&
1349 vif->type != NL80211_IFTYPE_MESH_POINT &&
1350 vif->type != NL80211_IFTYPE_ADHOC)
1351 return;
1352
1353 skb = ieee80211_beacon_get(hw, vif);
1354 if (skb == NULL)
1355 return;
1356 info = IEEE80211_SKB_CB(skb);
1357 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1358 ieee80211_get_tx_rates(vif, NULL, skb,
1359 info->control.rates,
1360 ARRAY_SIZE(info->control.rates));
1361
1362 txrate = ieee80211_get_tx_rate(hw, info);
1363
1364 mgmt = (struct ieee80211_mgmt *) skb->data;
1365 /* fake header transmission time */
1366 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1367 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1368 data->tsf_offset +
1369 24 * 8 * 10 / txrate->bitrate);
1370
1371 mac80211_hwsim_tx_frame(hw, skb,
1372 rcu_dereference(vif->chanctx_conf)->def.chan);
1373
1374 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1375 ieee80211_csa_finish(vif);
1376 }
1377
1378 static enum hrtimer_restart
1379 mac80211_hwsim_beacon(struct hrtimer *timer)
1380 {
1381 struct mac80211_hwsim_data *data =
1382 container_of(timer, struct mac80211_hwsim_data,
1383 beacon_timer.timer);
1384 struct ieee80211_hw *hw = data->hw;
1385 u64 bcn_int = data->beacon_int;
1386 ktime_t next_bcn;
1387
1388 if (!data->started)
1389 goto out;
1390
1391 ieee80211_iterate_active_interfaces_atomic(
1392 hw, IEEE80211_IFACE_ITER_NORMAL,
1393 mac80211_hwsim_beacon_tx, data);
1394
1395 /* beacon at new TBTT + beacon interval */
1396 if (data->bcn_delta) {
1397 bcn_int -= data->bcn_delta;
1398 data->bcn_delta = 0;
1399 }
1400
1401 next_bcn = ktime_add(hrtimer_get_expires(timer),
1402 ns_to_ktime(bcn_int * 1000));
1403 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1404 out:
1405 return HRTIMER_NORESTART;
1406 }
1407
1408 static const char * const hwsim_chanwidths[] = {
1409 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1410 [NL80211_CHAN_WIDTH_20] = "ht20",
1411 [NL80211_CHAN_WIDTH_40] = "ht40",
1412 [NL80211_CHAN_WIDTH_80] = "vht80",
1413 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1414 [NL80211_CHAN_WIDTH_160] = "vht160",
1415 };
1416
1417 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1418 {
1419 struct mac80211_hwsim_data *data = hw->priv;
1420 struct ieee80211_conf *conf = &hw->conf;
1421 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1422 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1423 [IEEE80211_SMPS_OFF] = "off",
1424 [IEEE80211_SMPS_STATIC] = "static",
1425 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1426 };
1427
1428 if (conf->chandef.chan)
1429 wiphy_debug(hw->wiphy,
1430 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1431 __func__,
1432 conf->chandef.chan->center_freq,
1433 conf->chandef.center_freq1,
1434 conf->chandef.center_freq2,
1435 hwsim_chanwidths[conf->chandef.width],
1436 !!(conf->flags & IEEE80211_CONF_IDLE),
1437 !!(conf->flags & IEEE80211_CONF_PS),
1438 smps_modes[conf->smps_mode]);
1439 else
1440 wiphy_debug(hw->wiphy,
1441 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1442 __func__,
1443 !!(conf->flags & IEEE80211_CONF_IDLE),
1444 !!(conf->flags & IEEE80211_CONF_PS),
1445 smps_modes[conf->smps_mode]);
1446
1447 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1448
1449 data->channel = conf->chandef.chan;
1450
1451 WARN_ON(data->channel && data->use_chanctx);
1452
1453 data->power_level = conf->power_level;
1454 if (!data->started || !data->beacon_int)
1455 tasklet_hrtimer_cancel(&data->beacon_timer);
1456 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1457 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1458 u32 bcn_int = data->beacon_int;
1459 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1460
1461 tasklet_hrtimer_start(&data->beacon_timer,
1462 ns_to_ktime(until_tbtt * 1000),
1463 HRTIMER_MODE_REL);
1464 }
1465
1466 return 0;
1467 }
1468
1469
1470 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1471 unsigned int changed_flags,
1472 unsigned int *total_flags,u64 multicast)
1473 {
1474 struct mac80211_hwsim_data *data = hw->priv;
1475
1476 wiphy_debug(hw->wiphy, "%s\n", __func__);
1477
1478 data->rx_filter = 0;
1479 if (*total_flags & FIF_PROMISC_IN_BSS)
1480 data->rx_filter |= FIF_PROMISC_IN_BSS;
1481 if (*total_flags & FIF_ALLMULTI)
1482 data->rx_filter |= FIF_ALLMULTI;
1483
1484 *total_flags = data->rx_filter;
1485 }
1486
1487 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1488 struct ieee80211_vif *vif)
1489 {
1490 unsigned int *count = data;
1491 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1492
1493 if (vp->bcn_en)
1494 (*count)++;
1495 }
1496
1497 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1498 struct ieee80211_vif *vif,
1499 struct ieee80211_bss_conf *info,
1500 u32 changed)
1501 {
1502 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1503 struct mac80211_hwsim_data *data = hw->priv;
1504
1505 hwsim_check_magic(vif);
1506
1507 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1508 __func__, changed, vif->addr);
1509
1510 if (changed & BSS_CHANGED_BSSID) {
1511 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1512 __func__, info->bssid);
1513 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1514 }
1515
1516 if (changed & BSS_CHANGED_ASSOC) {
1517 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1518 info->assoc, info->aid);
1519 vp->assoc = info->assoc;
1520 vp->aid = info->aid;
1521 }
1522
1523 if (changed & BSS_CHANGED_BEACON_INT) {
1524 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
1525 data->beacon_int = info->beacon_int * 1024;
1526 }
1527
1528 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1529 wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
1530 vp->bcn_en = info->enable_beacon;
1531 if (data->started &&
1532 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1533 info->enable_beacon) {
1534 u64 tsf, until_tbtt;
1535 u32 bcn_int;
1536 if (WARN_ON(!data->beacon_int))
1537 data->beacon_int = 1000 * 1024;
1538 tsf = mac80211_hwsim_get_tsf(hw, vif);
1539 bcn_int = data->beacon_int;
1540 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1541 tasklet_hrtimer_start(&data->beacon_timer,
1542 ns_to_ktime(until_tbtt * 1000),
1543 HRTIMER_MODE_REL);
1544 } else if (!info->enable_beacon) {
1545 unsigned int count = 0;
1546 ieee80211_iterate_active_interfaces_atomic(
1547 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1548 mac80211_hwsim_bcn_en_iter, &count);
1549 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1550 count);
1551 if (count == 0)
1552 tasklet_hrtimer_cancel(&data->beacon_timer);
1553 }
1554 }
1555
1556 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1557 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1558 info->use_cts_prot);
1559 }
1560
1561 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1562 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1563 info->use_short_preamble);
1564 }
1565
1566 if (changed & BSS_CHANGED_ERP_SLOT) {
1567 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1568 }
1569
1570 if (changed & BSS_CHANGED_HT) {
1571 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1572 info->ht_operation_mode);
1573 }
1574
1575 if (changed & BSS_CHANGED_BASIC_RATES) {
1576 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1577 (unsigned long long) info->basic_rates);
1578 }
1579
1580 if (changed & BSS_CHANGED_TXPOWER)
1581 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1582 }
1583
1584 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1585 struct ieee80211_vif *vif,
1586 struct ieee80211_sta *sta)
1587 {
1588 hwsim_check_magic(vif);
1589 hwsim_set_sta_magic(sta);
1590
1591 return 0;
1592 }
1593
1594 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1595 struct ieee80211_vif *vif,
1596 struct ieee80211_sta *sta)
1597 {
1598 hwsim_check_magic(vif);
1599 hwsim_clear_sta_magic(sta);
1600
1601 return 0;
1602 }
1603
1604 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1605 struct ieee80211_vif *vif,
1606 enum sta_notify_cmd cmd,
1607 struct ieee80211_sta *sta)
1608 {
1609 hwsim_check_magic(vif);
1610
1611 switch (cmd) {
1612 case STA_NOTIFY_SLEEP:
1613 case STA_NOTIFY_AWAKE:
1614 /* TODO: make good use of these flags */
1615 break;
1616 default:
1617 WARN(1, "Invalid sta notify: %d\n", cmd);
1618 break;
1619 }
1620 }
1621
1622 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1623 struct ieee80211_sta *sta,
1624 bool set)
1625 {
1626 hwsim_check_sta_magic(sta);
1627 return 0;
1628 }
1629
1630 static int mac80211_hwsim_conf_tx(
1631 struct ieee80211_hw *hw,
1632 struct ieee80211_vif *vif, u16 queue,
1633 const struct ieee80211_tx_queue_params *params)
1634 {
1635 wiphy_debug(hw->wiphy,
1636 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1637 __func__, queue,
1638 params->txop, params->cw_min,
1639 params->cw_max, params->aifs);
1640 return 0;
1641 }
1642
1643 static int mac80211_hwsim_get_survey(
1644 struct ieee80211_hw *hw, int idx,
1645 struct survey_info *survey)
1646 {
1647 struct ieee80211_conf *conf = &hw->conf;
1648
1649 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1650
1651 if (idx != 0)
1652 return -ENOENT;
1653
1654 /* Current channel */
1655 survey->channel = conf->chandef.chan;
1656
1657 /*
1658 * Magically conjured noise level --- this is only ok for simulated hardware.
1659 *
1660 * A real driver which cannot determine the real channel noise MUST NOT
1661 * report any noise, especially not a magically conjured one :-)
1662 */
1663 survey->filled = SURVEY_INFO_NOISE_DBM;
1664 survey->noise = -92;
1665
1666 return 0;
1667 }
1668
1669 #ifdef CONFIG_NL80211_TESTMODE
1670 /*
1671 * This section contains example code for using netlink
1672 * attributes with the testmode command in nl80211.
1673 */
1674
1675 /* These enums need to be kept in sync with userspace */
1676 enum hwsim_testmode_attr {
1677 __HWSIM_TM_ATTR_INVALID = 0,
1678 HWSIM_TM_ATTR_CMD = 1,
1679 HWSIM_TM_ATTR_PS = 2,
1680
1681 /* keep last */
1682 __HWSIM_TM_ATTR_AFTER_LAST,
1683 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1684 };
1685
1686 enum hwsim_testmode_cmd {
1687 HWSIM_TM_CMD_SET_PS = 0,
1688 HWSIM_TM_CMD_GET_PS = 1,
1689 HWSIM_TM_CMD_STOP_QUEUES = 2,
1690 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1691 };
1692
1693 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1694 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1695 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1696 };
1697
1698 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1699 struct ieee80211_vif *vif,
1700 void *data, int len)
1701 {
1702 struct mac80211_hwsim_data *hwsim = hw->priv;
1703 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1704 struct sk_buff *skb;
1705 int err, ps;
1706
1707 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1708 hwsim_testmode_policy);
1709 if (err)
1710 return err;
1711
1712 if (!tb[HWSIM_TM_ATTR_CMD])
1713 return -EINVAL;
1714
1715 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1716 case HWSIM_TM_CMD_SET_PS:
1717 if (!tb[HWSIM_TM_ATTR_PS])
1718 return -EINVAL;
1719 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1720 return hwsim_fops_ps_write(hwsim, ps);
1721 case HWSIM_TM_CMD_GET_PS:
1722 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1723 nla_total_size(sizeof(u32)));
1724 if (!skb)
1725 return -ENOMEM;
1726 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1727 goto nla_put_failure;
1728 return cfg80211_testmode_reply(skb);
1729 case HWSIM_TM_CMD_STOP_QUEUES:
1730 ieee80211_stop_queues(hw);
1731 return 0;
1732 case HWSIM_TM_CMD_WAKE_QUEUES:
1733 ieee80211_wake_queues(hw);
1734 return 0;
1735 default:
1736 return -EOPNOTSUPP;
1737 }
1738
1739 nla_put_failure:
1740 kfree_skb(skb);
1741 return -ENOBUFS;
1742 }
1743 #endif
1744
1745 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1746 struct ieee80211_vif *vif,
1747 enum ieee80211_ampdu_mlme_action action,
1748 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1749 u8 buf_size)
1750 {
1751 switch (action) {
1752 case IEEE80211_AMPDU_TX_START:
1753 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1754 break;
1755 case IEEE80211_AMPDU_TX_STOP_CONT:
1756 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1757 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1758 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1759 break;
1760 case IEEE80211_AMPDU_TX_OPERATIONAL:
1761 break;
1762 case IEEE80211_AMPDU_RX_START:
1763 case IEEE80211_AMPDU_RX_STOP:
1764 break;
1765 default:
1766 return -EOPNOTSUPP;
1767 }
1768
1769 return 0;
1770 }
1771
1772 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1773 struct ieee80211_vif *vif,
1774 u32 queues, bool drop)
1775 {
1776 /* Not implemented, queues only on kernel side */
1777 }
1778
1779 static void hw_scan_work(struct work_struct *work)
1780 {
1781 struct mac80211_hwsim_data *hwsim =
1782 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1783 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1784 int dwell, i;
1785
1786 mutex_lock(&hwsim->mutex);
1787 if (hwsim->scan_chan_idx >= req->n_channels) {
1788 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1789 ieee80211_scan_completed(hwsim->hw, false);
1790 hwsim->hw_scan_request = NULL;
1791 hwsim->hw_scan_vif = NULL;
1792 hwsim->tmp_chan = NULL;
1793 mutex_unlock(&hwsim->mutex);
1794 return;
1795 }
1796
1797 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1798 req->channels[hwsim->scan_chan_idx]->center_freq);
1799
1800 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1801 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1802 !req->n_ssids) {
1803 dwell = 120;
1804 } else {
1805 dwell = 30;
1806 /* send probes */
1807 for (i = 0; i < req->n_ssids; i++) {
1808 struct sk_buff *probe;
1809
1810 probe = ieee80211_probereq_get(hwsim->hw,
1811 hwsim->scan_addr,
1812 req->ssids[i].ssid,
1813 req->ssids[i].ssid_len,
1814 req->ie_len);
1815 if (!probe)
1816 continue;
1817
1818 if (req->ie_len)
1819 memcpy(skb_put(probe, req->ie_len), req->ie,
1820 req->ie_len);
1821
1822 local_bh_disable();
1823 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1824 hwsim->tmp_chan);
1825 local_bh_enable();
1826 }
1827 }
1828 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1829 msecs_to_jiffies(dwell));
1830 hwsim->scan_chan_idx++;
1831 mutex_unlock(&hwsim->mutex);
1832 }
1833
1834 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1835 struct ieee80211_vif *vif,
1836 struct ieee80211_scan_request *hw_req)
1837 {
1838 struct mac80211_hwsim_data *hwsim = hw->priv;
1839 struct cfg80211_scan_request *req = &hw_req->req;
1840
1841 mutex_lock(&hwsim->mutex);
1842 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1843 mutex_unlock(&hwsim->mutex);
1844 return -EBUSY;
1845 }
1846 hwsim->hw_scan_request = req;
1847 hwsim->hw_scan_vif = vif;
1848 hwsim->scan_chan_idx = 0;
1849 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1850 get_random_mask_addr(hwsim->scan_addr,
1851 hw_req->req.mac_addr,
1852 hw_req->req.mac_addr_mask);
1853 else
1854 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1855 mutex_unlock(&hwsim->mutex);
1856
1857 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1858
1859 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1860
1861 return 0;
1862 }
1863
1864 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1865 struct ieee80211_vif *vif)
1866 {
1867 struct mac80211_hwsim_data *hwsim = hw->priv;
1868
1869 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1870
1871 cancel_delayed_work_sync(&hwsim->hw_scan);
1872
1873 mutex_lock(&hwsim->mutex);
1874 ieee80211_scan_completed(hwsim->hw, true);
1875 hwsim->tmp_chan = NULL;
1876 hwsim->hw_scan_request = NULL;
1877 hwsim->hw_scan_vif = NULL;
1878 mutex_unlock(&hwsim->mutex);
1879 }
1880
1881 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1882 struct ieee80211_vif *vif,
1883 const u8 *mac_addr)
1884 {
1885 struct mac80211_hwsim_data *hwsim = hw->priv;
1886
1887 mutex_lock(&hwsim->mutex);
1888
1889 if (hwsim->scanning) {
1890 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1891 goto out;
1892 }
1893
1894 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1895
1896 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1897 hwsim->scanning = true;
1898
1899 out:
1900 mutex_unlock(&hwsim->mutex);
1901 }
1902
1903 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
1904 struct ieee80211_vif *vif)
1905 {
1906 struct mac80211_hwsim_data *hwsim = hw->priv;
1907
1908 mutex_lock(&hwsim->mutex);
1909
1910 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1911 hwsim->scanning = false;
1912 memset(hwsim->scan_addr, 0, ETH_ALEN);
1913
1914 mutex_unlock(&hwsim->mutex);
1915 }
1916
1917 static void hw_roc_done(struct work_struct *work)
1918 {
1919 struct mac80211_hwsim_data *hwsim =
1920 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1921
1922 mutex_lock(&hwsim->mutex);
1923 ieee80211_remain_on_channel_expired(hwsim->hw);
1924 hwsim->tmp_chan = NULL;
1925 mutex_unlock(&hwsim->mutex);
1926
1927 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1928 }
1929
1930 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1931 struct ieee80211_vif *vif,
1932 struct ieee80211_channel *chan,
1933 int duration,
1934 enum ieee80211_roc_type type)
1935 {
1936 struct mac80211_hwsim_data *hwsim = hw->priv;
1937
1938 mutex_lock(&hwsim->mutex);
1939 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1940 mutex_unlock(&hwsim->mutex);
1941 return -EBUSY;
1942 }
1943
1944 hwsim->tmp_chan = chan;
1945 mutex_unlock(&hwsim->mutex);
1946
1947 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1948 chan->center_freq, duration);
1949
1950 ieee80211_ready_on_channel(hw);
1951
1952 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1953 msecs_to_jiffies(duration));
1954 return 0;
1955 }
1956
1957 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1958 {
1959 struct mac80211_hwsim_data *hwsim = hw->priv;
1960
1961 cancel_delayed_work_sync(&hwsim->roc_done);
1962
1963 mutex_lock(&hwsim->mutex);
1964 hwsim->tmp_chan = NULL;
1965 mutex_unlock(&hwsim->mutex);
1966
1967 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1968
1969 return 0;
1970 }
1971
1972 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1973 struct ieee80211_chanctx_conf *ctx)
1974 {
1975 hwsim_set_chanctx_magic(ctx);
1976 wiphy_debug(hw->wiphy,
1977 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1978 ctx->def.chan->center_freq, ctx->def.width,
1979 ctx->def.center_freq1, ctx->def.center_freq2);
1980 return 0;
1981 }
1982
1983 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1984 struct ieee80211_chanctx_conf *ctx)
1985 {
1986 wiphy_debug(hw->wiphy,
1987 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1988 ctx->def.chan->center_freq, ctx->def.width,
1989 ctx->def.center_freq1, ctx->def.center_freq2);
1990 hwsim_check_chanctx_magic(ctx);
1991 hwsim_clear_chanctx_magic(ctx);
1992 }
1993
1994 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1995 struct ieee80211_chanctx_conf *ctx,
1996 u32 changed)
1997 {
1998 hwsim_check_chanctx_magic(ctx);
1999 wiphy_debug(hw->wiphy,
2000 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2001 ctx->def.chan->center_freq, ctx->def.width,
2002 ctx->def.center_freq1, ctx->def.center_freq2);
2003 }
2004
2005 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2006 struct ieee80211_vif *vif,
2007 struct ieee80211_chanctx_conf *ctx)
2008 {
2009 hwsim_check_magic(vif);
2010 hwsim_check_chanctx_magic(ctx);
2011
2012 return 0;
2013 }
2014
2015 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2016 struct ieee80211_vif *vif,
2017 struct ieee80211_chanctx_conf *ctx)
2018 {
2019 hwsim_check_magic(vif);
2020 hwsim_check_chanctx_magic(ctx);
2021 }
2022
2023 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2024 "tx_pkts_nic",
2025 "tx_bytes_nic",
2026 "rx_pkts_nic",
2027 "rx_bytes_nic",
2028 "d_tx_dropped",
2029 "d_tx_failed",
2030 "d_ps_mode",
2031 "d_group",
2032 "d_tx_power",
2033 };
2034
2035 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2036
2037 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2038 struct ieee80211_vif *vif,
2039 u32 sset, u8 *data)
2040 {
2041 if (sset == ETH_SS_STATS)
2042 memcpy(data, *mac80211_hwsim_gstrings_stats,
2043 sizeof(mac80211_hwsim_gstrings_stats));
2044 }
2045
2046 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2047 struct ieee80211_vif *vif, int sset)
2048 {
2049 if (sset == ETH_SS_STATS)
2050 return MAC80211_HWSIM_SSTATS_LEN;
2051 return 0;
2052 }
2053
2054 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2055 struct ieee80211_vif *vif,
2056 struct ethtool_stats *stats, u64 *data)
2057 {
2058 struct mac80211_hwsim_data *ar = hw->priv;
2059 int i = 0;
2060
2061 data[i++] = ar->tx_pkts;
2062 data[i++] = ar->tx_bytes;
2063 data[i++] = ar->rx_pkts;
2064 data[i++] = ar->rx_bytes;
2065 data[i++] = ar->tx_dropped;
2066 data[i++] = ar->tx_failed;
2067 data[i++] = ar->ps;
2068 data[i++] = ar->group;
2069 data[i++] = ar->power_level;
2070
2071 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2072 }
2073
2074 static const struct ieee80211_ops mac80211_hwsim_ops = {
2075 .tx = mac80211_hwsim_tx,
2076 .start = mac80211_hwsim_start,
2077 .stop = mac80211_hwsim_stop,
2078 .add_interface = mac80211_hwsim_add_interface,
2079 .change_interface = mac80211_hwsim_change_interface,
2080 .remove_interface = mac80211_hwsim_remove_interface,
2081 .config = mac80211_hwsim_config,
2082 .configure_filter = mac80211_hwsim_configure_filter,
2083 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2084 .sta_add = mac80211_hwsim_sta_add,
2085 .sta_remove = mac80211_hwsim_sta_remove,
2086 .sta_notify = mac80211_hwsim_sta_notify,
2087 .set_tim = mac80211_hwsim_set_tim,
2088 .conf_tx = mac80211_hwsim_conf_tx,
2089 .get_survey = mac80211_hwsim_get_survey,
2090 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2091 .ampdu_action = mac80211_hwsim_ampdu_action,
2092 .sw_scan_start = mac80211_hwsim_sw_scan,
2093 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2094 .flush = mac80211_hwsim_flush,
2095 .get_tsf = mac80211_hwsim_get_tsf,
2096 .set_tsf = mac80211_hwsim_set_tsf,
2097 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2098 .get_et_stats = mac80211_hwsim_get_et_stats,
2099 .get_et_strings = mac80211_hwsim_get_et_strings,
2100 };
2101
2102 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2103
2104 struct hwsim_new_radio_params {
2105 unsigned int channels;
2106 const char *reg_alpha2;
2107 const struct ieee80211_regdomain *regd;
2108 bool reg_strict;
2109 bool p2p_device;
2110 bool use_chanctx;
2111 bool destroy_on_close;
2112 const char *hwname;
2113 bool no_vif;
2114 };
2115
2116 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2117 struct genl_info *info)
2118 {
2119 if (info)
2120 genl_notify(&hwsim_genl_family, mcast_skb,
2121 genl_info_net(info), info->snd_portid,
2122 HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
2123 else
2124 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2125 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2126 }
2127
2128 static int append_radio_msg(struct sk_buff *skb, int id,
2129 struct hwsim_new_radio_params *param)
2130 {
2131 int ret;
2132
2133 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2134 if (ret < 0)
2135 return ret;
2136
2137 if (param->channels) {
2138 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2139 if (ret < 0)
2140 return ret;
2141 }
2142
2143 if (param->reg_alpha2) {
2144 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2145 param->reg_alpha2);
2146 if (ret < 0)
2147 return ret;
2148 }
2149
2150 if (param->regd) {
2151 int i;
2152
2153 for (i = 0; hwsim_world_regdom_custom[i] != param->regd &&
2154 i < ARRAY_SIZE(hwsim_world_regdom_custom); i++)
2155 ;
2156
2157 if (i < ARRAY_SIZE(hwsim_world_regdom_custom)) {
2158 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2159 if (ret < 0)
2160 return ret;
2161 }
2162 }
2163
2164 if (param->reg_strict) {
2165 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2166 if (ret < 0)
2167 return ret;
2168 }
2169
2170 if (param->p2p_device) {
2171 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2172 if (ret < 0)
2173 return ret;
2174 }
2175
2176 if (param->use_chanctx) {
2177 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2178 if (ret < 0)
2179 return ret;
2180 }
2181
2182 if (param->hwname) {
2183 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2184 strlen(param->hwname), param->hwname);
2185 if (ret < 0)
2186 return ret;
2187 }
2188
2189 return 0;
2190 }
2191
2192 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2193 struct hwsim_new_radio_params *param)
2194 {
2195 struct sk_buff *mcast_skb;
2196 void *data;
2197
2198 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2199 if (!mcast_skb)
2200 return;
2201
2202 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2203 HWSIM_CMD_NEW_RADIO);
2204 if (!data)
2205 goto out_err;
2206
2207 if (append_radio_msg(mcast_skb, id, param) < 0)
2208 goto out_err;
2209
2210 genlmsg_end(mcast_skb, data);
2211
2212 hwsim_mcast_config_msg(mcast_skb, info);
2213 return;
2214
2215 out_err:
2216 genlmsg_cancel(mcast_skb, data);
2217 nlmsg_free(mcast_skb);
2218 }
2219
2220 static int mac80211_hwsim_new_radio(struct genl_info *info,
2221 struct hwsim_new_radio_params *param)
2222 {
2223 int err;
2224 u8 addr[ETH_ALEN];
2225 struct mac80211_hwsim_data *data;
2226 struct ieee80211_hw *hw;
2227 enum ieee80211_band band;
2228 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2229 int idx;
2230
2231 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2232 return -EINVAL;
2233
2234 spin_lock_bh(&hwsim_radio_lock);
2235 idx = hwsim_radio_idx++;
2236 spin_unlock_bh(&hwsim_radio_lock);
2237
2238 if (param->use_chanctx)
2239 ops = &mac80211_hwsim_mchan_ops;
2240 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2241 if (!hw) {
2242 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2243 err = -ENOMEM;
2244 goto failed;
2245 }
2246 data = hw->priv;
2247 data->hw = hw;
2248
2249 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2250 if (IS_ERR(data->dev)) {
2251 printk(KERN_DEBUG
2252 "mac80211_hwsim: device_create failed (%ld)\n",
2253 PTR_ERR(data->dev));
2254 err = -ENOMEM;
2255 goto failed_drvdata;
2256 }
2257 data->dev->driver = &mac80211_hwsim_driver.driver;
2258 err = device_bind_driver(data->dev);
2259 if (err != 0) {
2260 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2261 err);
2262 goto failed_bind;
2263 }
2264
2265 skb_queue_head_init(&data->pending);
2266
2267 SET_IEEE80211_DEV(hw, data->dev);
2268 memset(addr, 0, ETH_ALEN);
2269 addr[0] = 0x02;
2270 addr[3] = idx >> 8;
2271 addr[4] = idx;
2272 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2273 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2274 data->addresses[1].addr[0] |= 0x40;
2275 hw->wiphy->n_addresses = 2;
2276 hw->wiphy->addresses = data->addresses;
2277
2278 data->channels = param->channels;
2279 data->use_chanctx = param->use_chanctx;
2280 data->idx = idx;
2281 data->destroy_on_close = param->destroy_on_close;
2282 if (info)
2283 data->portid = info->snd_portid;
2284
2285 if (data->use_chanctx) {
2286 hw->wiphy->max_scan_ssids = 255;
2287 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2288 hw->wiphy->max_remain_on_channel_duration = 1000;
2289 /* For channels > 1 DFS is not allowed */
2290 hw->wiphy->n_iface_combinations = 1;
2291 hw->wiphy->iface_combinations = &data->if_combination;
2292 if (param->p2p_device)
2293 data->if_combination = hwsim_if_comb_p2p_dev[0];
2294 else
2295 data->if_combination = hwsim_if_comb[0];
2296 data->if_combination.num_different_channels = data->channels;
2297 } else if (param->p2p_device) {
2298 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2299 hw->wiphy->n_iface_combinations =
2300 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2301 } else {
2302 hw->wiphy->iface_combinations = hwsim_if_comb;
2303 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2304 }
2305
2306 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2307 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2308
2309 hw->queues = 5;
2310 hw->offchannel_tx_hw_queue = 4;
2311 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2312 BIT(NL80211_IFTYPE_AP) |
2313 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2314 BIT(NL80211_IFTYPE_P2P_GO) |
2315 BIT(NL80211_IFTYPE_ADHOC) |
2316 BIT(NL80211_IFTYPE_MESH_POINT);
2317
2318 if (param->p2p_device)
2319 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2320
2321 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2322 IEEE80211_HW_SIGNAL_DBM |
2323 IEEE80211_HW_AMPDU_AGGREGATION |
2324 IEEE80211_HW_WANT_MONITOR_VIF |
2325 IEEE80211_HW_QUEUE_CONTROL |
2326 IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2327 IEEE80211_HW_CHANCTX_STA_CSA;
2328 if (rctbl)
2329 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2330
2331 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2332 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2333 WIPHY_FLAG_AP_UAPSD |
2334 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2335 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2336 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2337 NL80211_FEATURE_STATIC_SMPS |
2338 NL80211_FEATURE_DYNAMIC_SMPS |
2339 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2340
2341 /* ask mac80211 to reserve space for magic */
2342 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2343 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2344 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2345
2346 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2347 sizeof(hwsim_channels_2ghz));
2348 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2349 sizeof(hwsim_channels_5ghz));
2350 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2351
2352 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2353 struct ieee80211_supported_band *sband = &data->bands[band];
2354 switch (band) {
2355 case IEEE80211_BAND_2GHZ:
2356 sband->channels = data->channels_2ghz;
2357 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2358 sband->bitrates = data->rates;
2359 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2360 break;
2361 case IEEE80211_BAND_5GHZ:
2362 sband->channels = data->channels_5ghz;
2363 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2364 sband->bitrates = data->rates + 4;
2365 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2366 break;
2367 default:
2368 continue;
2369 }
2370
2371 sband->ht_cap.ht_supported = true;
2372 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2373 IEEE80211_HT_CAP_GRN_FLD |
2374 IEEE80211_HT_CAP_SGI_20 |
2375 IEEE80211_HT_CAP_SGI_40 |
2376 IEEE80211_HT_CAP_DSSSCCK40;
2377 sband->ht_cap.ampdu_factor = 0x3;
2378 sband->ht_cap.ampdu_density = 0x6;
2379 memset(&sband->ht_cap.mcs, 0,
2380 sizeof(sband->ht_cap.mcs));
2381 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2382 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2383 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2384
2385 hw->wiphy->bands[band] = sband;
2386
2387 sband->vht_cap.vht_supported = true;
2388 sband->vht_cap.cap =
2389 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2390 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2391 IEEE80211_VHT_CAP_RXLDPC |
2392 IEEE80211_VHT_CAP_SHORT_GI_80 |
2393 IEEE80211_VHT_CAP_SHORT_GI_160 |
2394 IEEE80211_VHT_CAP_TXSTBC |
2395 IEEE80211_VHT_CAP_RXSTBC_1 |
2396 IEEE80211_VHT_CAP_RXSTBC_2 |
2397 IEEE80211_VHT_CAP_RXSTBC_3 |
2398 IEEE80211_VHT_CAP_RXSTBC_4 |
2399 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2400 sband->vht_cap.vht_mcs.rx_mcs_map =
2401 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2402 IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2403 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2404 IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2405 IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2406 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2407 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2408 IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2409 sband->vht_cap.vht_mcs.tx_mcs_map =
2410 sband->vht_cap.vht_mcs.rx_mcs_map;
2411 }
2412
2413 /* By default all radios belong to the first group */
2414 data->group = 1;
2415 mutex_init(&data->mutex);
2416
2417 /* Enable frame retransmissions for lossy channels */
2418 hw->max_rates = 4;
2419 hw->max_rate_tries = 11;
2420
2421 if (param->reg_strict)
2422 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2423 if (param->regd) {
2424 data->regd = param->regd;
2425 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2426 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2427 /* give the regulatory workqueue a chance to run */
2428 schedule_timeout_interruptible(1);
2429 }
2430
2431 if (param->no_vif)
2432 hw->flags |= IEEE80211_HW_NO_AUTO_VIF;
2433
2434 err = ieee80211_register_hw(hw);
2435 if (err < 0) {
2436 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2437 err);
2438 goto failed_hw;
2439 }
2440
2441 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2442
2443 if (param->reg_alpha2) {
2444 data->alpha2[0] = param->reg_alpha2[0];
2445 data->alpha2[1] = param->reg_alpha2[1];
2446 regulatory_hint(hw->wiphy, param->reg_alpha2);
2447 }
2448
2449 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2450 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2451 debugfs_create_file("group", 0666, data->debugfs, data,
2452 &hwsim_fops_group);
2453 if (!data->use_chanctx)
2454 debugfs_create_file("dfs_simulate_radar", 0222,
2455 data->debugfs,
2456 data, &hwsim_simulate_radar);
2457
2458 tasklet_hrtimer_init(&data->beacon_timer,
2459 mac80211_hwsim_beacon,
2460 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2461
2462 spin_lock_bh(&hwsim_radio_lock);
2463 list_add_tail(&data->list, &hwsim_radios);
2464 spin_unlock_bh(&hwsim_radio_lock);
2465
2466 if (idx > 0)
2467 hwsim_mcast_new_radio(idx, info, param);
2468
2469 return idx;
2470
2471 failed_hw:
2472 device_release_driver(data->dev);
2473 failed_bind:
2474 device_unregister(data->dev);
2475 failed_drvdata:
2476 ieee80211_free_hw(hw);
2477 failed:
2478 return err;
2479 }
2480
2481 static void hwsim_mcast_del_radio(int id, const char *hwname,
2482 struct genl_info *info)
2483 {
2484 struct sk_buff *skb;
2485 void *data;
2486 int ret;
2487
2488 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2489 if (!skb)
2490 return;
2491
2492 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2493 HWSIM_CMD_DEL_RADIO);
2494 if (!data)
2495 goto error;
2496
2497 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2498 if (ret < 0)
2499 goto error;
2500
2501 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2502 hwname);
2503 if (ret < 0)
2504 goto error;
2505
2506 genlmsg_end(skb, data);
2507
2508 hwsim_mcast_config_msg(skb, info);
2509
2510 return;
2511
2512 error:
2513 nlmsg_free(skb);
2514 }
2515
2516 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2517 const char *hwname,
2518 struct genl_info *info)
2519 {
2520 hwsim_mcast_del_radio(data->idx, hwname, info);
2521 debugfs_remove_recursive(data->debugfs);
2522 ieee80211_unregister_hw(data->hw);
2523 device_release_driver(data->dev);
2524 device_unregister(data->dev);
2525 ieee80211_free_hw(data->hw);
2526 }
2527
2528 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2529 struct mac80211_hwsim_data *data,
2530 u32 portid, u32 seq,
2531 struct netlink_callback *cb, int flags)
2532 {
2533 void *hdr;
2534 struct hwsim_new_radio_params param = { };
2535 int res = -EMSGSIZE;
2536
2537 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2538 HWSIM_CMD_GET_RADIO);
2539 if (!hdr)
2540 return -EMSGSIZE;
2541
2542 if (cb)
2543 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2544
2545 if (data->alpha2[0] && data->alpha2[1])
2546 param.reg_alpha2 = data->alpha2;
2547
2548 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2549 REGULATORY_STRICT_REG);
2550 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2551 BIT(NL80211_IFTYPE_P2P_DEVICE));
2552 param.use_chanctx = data->use_chanctx;
2553 param.regd = data->regd;
2554 param.channels = data->channels;
2555 param.hwname = wiphy_name(data->hw->wiphy);
2556
2557 res = append_radio_msg(skb, data->idx, &param);
2558 if (res < 0)
2559 goto out_err;
2560
2561 return genlmsg_end(skb, hdr);
2562
2563 out_err:
2564 genlmsg_cancel(skb, hdr);
2565 return res;
2566 }
2567
2568 static void mac80211_hwsim_free(void)
2569 {
2570 struct mac80211_hwsim_data *data;
2571
2572 spin_lock_bh(&hwsim_radio_lock);
2573 while ((data = list_first_entry_or_null(&hwsim_radios,
2574 struct mac80211_hwsim_data,
2575 list))) {
2576 list_del(&data->list);
2577 spin_unlock_bh(&hwsim_radio_lock);
2578 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2579 NULL);
2580 spin_lock_bh(&hwsim_radio_lock);
2581 }
2582 spin_unlock_bh(&hwsim_radio_lock);
2583 class_destroy(hwsim_class);
2584 }
2585
2586 static const struct net_device_ops hwsim_netdev_ops = {
2587 .ndo_start_xmit = hwsim_mon_xmit,
2588 .ndo_change_mtu = eth_change_mtu,
2589 .ndo_set_mac_address = eth_mac_addr,
2590 .ndo_validate_addr = eth_validate_addr,
2591 };
2592
2593 static void hwsim_mon_setup(struct net_device *dev)
2594 {
2595 dev->netdev_ops = &hwsim_netdev_ops;
2596 dev->destructor = free_netdev;
2597 ether_setup(dev);
2598 dev->tx_queue_len = 0;
2599 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2600 memset(dev->dev_addr, 0, ETH_ALEN);
2601 dev->dev_addr[0] = 0x12;
2602 }
2603
2604 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2605 {
2606 struct mac80211_hwsim_data *data;
2607 bool _found = false;
2608
2609 spin_lock_bh(&hwsim_radio_lock);
2610 list_for_each_entry(data, &hwsim_radios, list) {
2611 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2612 _found = true;
2613 break;
2614 }
2615 }
2616 spin_unlock_bh(&hwsim_radio_lock);
2617
2618 if (!_found)
2619 return NULL;
2620
2621 return data;
2622 }
2623
2624 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2625 struct genl_info *info)
2626 {
2627
2628 struct ieee80211_hdr *hdr;
2629 struct mac80211_hwsim_data *data2;
2630 struct ieee80211_tx_info *txi;
2631 struct hwsim_tx_rate *tx_attempts;
2632 unsigned long ret_skb_ptr;
2633 struct sk_buff *skb, *tmp;
2634 const u8 *src;
2635 unsigned int hwsim_flags;
2636 int i;
2637 bool found = false;
2638
2639 if (info->snd_portid != wmediumd_portid)
2640 return -EINVAL;
2641
2642 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2643 !info->attrs[HWSIM_ATTR_FLAGS] ||
2644 !info->attrs[HWSIM_ATTR_COOKIE] ||
2645 !info->attrs[HWSIM_ATTR_TX_INFO])
2646 goto out;
2647
2648 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2649 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2650 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2651
2652 data2 = get_hwsim_data_ref_from_addr(src);
2653 if (!data2)
2654 goto out;
2655
2656 /* look for the skb matching the cookie passed back from user */
2657 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2658 if ((unsigned long)skb == ret_skb_ptr) {
2659 skb_unlink(skb, &data2->pending);
2660 found = true;
2661 break;
2662 }
2663 }
2664
2665 /* not found */
2666 if (!found)
2667 goto out;
2668
2669 /* Tx info received because the frame was broadcasted on user space,
2670 so we get all the necessary info: tx attempts and skb control buff */
2671
2672 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2673 info->attrs[HWSIM_ATTR_TX_INFO]);
2674
2675 /* now send back TX status */
2676 txi = IEEE80211_SKB_CB(skb);
2677
2678 ieee80211_tx_info_clear_status(txi);
2679
2680 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2681 txi->status.rates[i].idx = tx_attempts[i].idx;
2682 txi->status.rates[i].count = tx_attempts[i].count;
2683 /*txi->status.rates[i].flags = 0;*/
2684 }
2685
2686 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2687
2688 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2689 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2690 if (skb->len >= 16) {
2691 hdr = (struct ieee80211_hdr *) skb->data;
2692 mac80211_hwsim_monitor_ack(data2->channel,
2693 hdr->addr2);
2694 }
2695 txi->flags |= IEEE80211_TX_STAT_ACK;
2696 }
2697 ieee80211_tx_status_irqsafe(data2->hw, skb);
2698 return 0;
2699 out:
2700 return -EINVAL;
2701
2702 }
2703
2704 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2705 struct genl_info *info)
2706 {
2707 struct mac80211_hwsim_data *data2;
2708 struct ieee80211_rx_status rx_status;
2709 const u8 *dst;
2710 int frame_data_len;
2711 void *frame_data;
2712 struct sk_buff *skb = NULL;
2713
2714 if (info->snd_portid != wmediumd_portid)
2715 return -EINVAL;
2716
2717 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2718 !info->attrs[HWSIM_ATTR_FRAME] ||
2719 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2720 !info->attrs[HWSIM_ATTR_SIGNAL])
2721 goto out;
2722
2723 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2724 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2725 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2726
2727 /* Allocate new skb here */
2728 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2729 if (skb == NULL)
2730 goto err;
2731
2732 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2733 goto err;
2734
2735 /* Copy the data */
2736 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2737
2738 data2 = get_hwsim_data_ref_from_addr(dst);
2739 if (!data2)
2740 goto out;
2741
2742 /* check if radio is configured properly */
2743
2744 if (data2->idle || !data2->started)
2745 goto out;
2746
2747 /* A frame is received from user space */
2748 memset(&rx_status, 0, sizeof(rx_status));
2749 /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2750 * packets?
2751 */
2752 rx_status.freq = data2->channel->center_freq;
2753 rx_status.band = data2->channel->band;
2754 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2755 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2756
2757 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2758 data2->rx_pkts++;
2759 data2->rx_bytes += skb->len;
2760 ieee80211_rx_irqsafe(data2->hw, skb);
2761
2762 return 0;
2763 err:
2764 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2765 out:
2766 dev_kfree_skb(skb);
2767 return -EINVAL;
2768 }
2769
2770 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2771 struct genl_info *info)
2772 {
2773 struct mac80211_hwsim_data *data;
2774 int chans = 1;
2775
2776 spin_lock_bh(&hwsim_radio_lock);
2777 list_for_each_entry(data, &hwsim_radios, list)
2778 chans = max(chans, data->channels);
2779 spin_unlock_bh(&hwsim_radio_lock);
2780
2781 /* In the future we should revise the userspace API and allow it
2782 * to set a flag that it does support multi-channel, then we can
2783 * let this pass conditionally on the flag.
2784 * For current userspace, prohibit it since it won't work right.
2785 */
2786 if (chans > 1)
2787 return -EOPNOTSUPP;
2788
2789 if (wmediumd_portid)
2790 return -EBUSY;
2791
2792 wmediumd_portid = info->snd_portid;
2793
2794 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2795 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2796
2797 return 0;
2798 }
2799
2800 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2801 {
2802 struct hwsim_new_radio_params param = { 0 };
2803
2804 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2805 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2806 param.channels = channels;
2807 param.destroy_on_close =
2808 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2809
2810 if (info->attrs[HWSIM_ATTR_CHANNELS])
2811 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2812
2813 if (info->attrs[HWSIM_ATTR_NO_VIF])
2814 param.no_vif = true;
2815
2816 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2817 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2818
2819 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2820 param.use_chanctx = true;
2821 else
2822 param.use_chanctx = (param.channels > 1);
2823
2824 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2825 param.reg_alpha2 =
2826 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2827
2828 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2829 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2830
2831 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2832 return -EINVAL;
2833 param.regd = hwsim_world_regdom_custom[idx];
2834 }
2835
2836 return mac80211_hwsim_new_radio(info, &param);
2837 }
2838
2839 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2840 {
2841 struct mac80211_hwsim_data *data;
2842 s64 idx = -1;
2843 const char *hwname = NULL;
2844
2845 if (info->attrs[HWSIM_ATTR_RADIO_ID])
2846 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2847 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2848 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2849 else
2850 return -EINVAL;
2851
2852 spin_lock_bh(&hwsim_radio_lock);
2853 list_for_each_entry(data, &hwsim_radios, list) {
2854 if (idx >= 0) {
2855 if (data->idx != idx)
2856 continue;
2857 } else {
2858 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
2859 continue;
2860 }
2861
2862 list_del(&data->list);
2863 spin_unlock_bh(&hwsim_radio_lock);
2864 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2865 info);
2866 return 0;
2867 }
2868 spin_unlock_bh(&hwsim_radio_lock);
2869
2870 return -ENODEV;
2871 }
2872
2873 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
2874 {
2875 struct mac80211_hwsim_data *data;
2876 struct sk_buff *skb;
2877 int idx, res = -ENODEV;
2878
2879 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2880 return -EINVAL;
2881 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2882
2883 spin_lock_bh(&hwsim_radio_lock);
2884 list_for_each_entry(data, &hwsim_radios, list) {
2885 if (data->idx != idx)
2886 continue;
2887
2888 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2889 if (!skb) {
2890 res = -ENOMEM;
2891 goto out_err;
2892 }
2893
2894 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
2895 info->snd_seq, NULL, 0);
2896 if (res < 0) {
2897 nlmsg_free(skb);
2898 goto out_err;
2899 }
2900
2901 genlmsg_reply(skb, info);
2902 break;
2903 }
2904
2905 out_err:
2906 spin_unlock_bh(&hwsim_radio_lock);
2907
2908 return res;
2909 }
2910
2911 static int hwsim_dump_radio_nl(struct sk_buff *skb,
2912 struct netlink_callback *cb)
2913 {
2914 int idx = cb->args[0];
2915 struct mac80211_hwsim_data *data = NULL;
2916 int res;
2917
2918 spin_lock_bh(&hwsim_radio_lock);
2919
2920 if (idx == hwsim_radio_idx)
2921 goto done;
2922
2923 list_for_each_entry(data, &hwsim_radios, list) {
2924 if (data->idx < idx)
2925 continue;
2926
2927 res = mac80211_hwsim_get_radio(skb, data,
2928 NETLINK_CB(cb->skb).portid,
2929 cb->nlh->nlmsg_seq, cb,
2930 NLM_F_MULTI);
2931 if (res < 0)
2932 break;
2933
2934 idx = data->idx + 1;
2935 }
2936
2937 cb->args[0] = idx;
2938
2939 done:
2940 spin_unlock_bh(&hwsim_radio_lock);
2941 return skb->len;
2942 }
2943
2944 /* Generic Netlink operations array */
2945 static const struct genl_ops hwsim_ops[] = {
2946 {
2947 .cmd = HWSIM_CMD_REGISTER,
2948 .policy = hwsim_genl_policy,
2949 .doit = hwsim_register_received_nl,
2950 .flags = GENL_ADMIN_PERM,
2951 },
2952 {
2953 .cmd = HWSIM_CMD_FRAME,
2954 .policy = hwsim_genl_policy,
2955 .doit = hwsim_cloned_frame_received_nl,
2956 },
2957 {
2958 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2959 .policy = hwsim_genl_policy,
2960 .doit = hwsim_tx_info_frame_received_nl,
2961 },
2962 {
2963 .cmd = HWSIM_CMD_NEW_RADIO,
2964 .policy = hwsim_genl_policy,
2965 .doit = hwsim_new_radio_nl,
2966 .flags = GENL_ADMIN_PERM,
2967 },
2968 {
2969 .cmd = HWSIM_CMD_DEL_RADIO,
2970 .policy = hwsim_genl_policy,
2971 .doit = hwsim_del_radio_nl,
2972 .flags = GENL_ADMIN_PERM,
2973 },
2974 {
2975 .cmd = HWSIM_CMD_GET_RADIO,
2976 .policy = hwsim_genl_policy,
2977 .doit = hwsim_get_radio_nl,
2978 .dumpit = hwsim_dump_radio_nl,
2979 },
2980 };
2981
2982 static void destroy_radio(struct work_struct *work)
2983 {
2984 struct mac80211_hwsim_data *data =
2985 container_of(work, struct mac80211_hwsim_data, destroy_work);
2986
2987 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
2988 }
2989
2990 static void remove_user_radios(u32 portid)
2991 {
2992 struct mac80211_hwsim_data *entry, *tmp;
2993
2994 spin_lock_bh(&hwsim_radio_lock);
2995 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
2996 if (entry->destroy_on_close && entry->portid == portid) {
2997 list_del(&entry->list);
2998 INIT_WORK(&entry->destroy_work, destroy_radio);
2999 schedule_work(&entry->destroy_work);
3000 }
3001 }
3002 spin_unlock_bh(&hwsim_radio_lock);
3003 }
3004
3005 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3006 unsigned long state,
3007 void *_notify)
3008 {
3009 struct netlink_notify *notify = _notify;
3010
3011 if (state != NETLINK_URELEASE)
3012 return NOTIFY_DONE;
3013
3014 remove_user_radios(notify->portid);
3015
3016 if (notify->portid == wmediumd_portid) {
3017 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3018 " socket, switching to perfect channel medium\n");
3019 wmediumd_portid = 0;
3020 }
3021 return NOTIFY_DONE;
3022
3023 }
3024
3025 static struct notifier_block hwsim_netlink_notifier = {
3026 .notifier_call = mac80211_hwsim_netlink_notify,
3027 };
3028
3029 static int hwsim_init_netlink(void)
3030 {
3031 int rc;
3032
3033 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3034
3035 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3036 hwsim_ops,
3037 hwsim_mcgrps);
3038 if (rc)
3039 goto failure;
3040
3041 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3042 if (rc)
3043 goto failure;
3044
3045 return 0;
3046
3047 failure:
3048 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3049 return -EINVAL;
3050 }
3051
3052 static void hwsim_exit_netlink(void)
3053 {
3054 /* unregister the notifier */
3055 netlink_unregister_notifier(&hwsim_netlink_notifier);
3056 /* unregister the family */
3057 genl_unregister_family(&hwsim_genl_family);
3058 }
3059
3060 static int __init init_mac80211_hwsim(void)
3061 {
3062 int i, err;
3063
3064 if (radios < 0 || radios > 100)
3065 return -EINVAL;
3066
3067 if (channels < 1)
3068 return -EINVAL;
3069
3070 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3071 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3072 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3073 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3074 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3075 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3076 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3077 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3078 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3079 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3080 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3081 mac80211_hwsim_assign_vif_chanctx;
3082 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3083 mac80211_hwsim_unassign_vif_chanctx;
3084
3085 spin_lock_init(&hwsim_radio_lock);
3086 INIT_LIST_HEAD(&hwsim_radios);
3087
3088 err = platform_driver_register(&mac80211_hwsim_driver);
3089 if (err)
3090 return err;
3091
3092 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3093 if (IS_ERR(hwsim_class)) {
3094 err = PTR_ERR(hwsim_class);
3095 goto out_unregister_driver;
3096 }
3097
3098 err = hwsim_init_netlink();
3099 if (err < 0)
3100 goto out_unregister_driver;
3101
3102 for (i = 0; i < radios; i++) {
3103 struct hwsim_new_radio_params param = { 0 };
3104
3105 param.channels = channels;
3106
3107 switch (regtest) {
3108 case HWSIM_REGTEST_DIFF_COUNTRY:
3109 if (i < ARRAY_SIZE(hwsim_alpha2s))
3110 param.reg_alpha2 = hwsim_alpha2s[i];
3111 break;
3112 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3113 if (!i)
3114 param.reg_alpha2 = hwsim_alpha2s[0];
3115 break;
3116 case HWSIM_REGTEST_STRICT_ALL:
3117 param.reg_strict = true;
3118 case HWSIM_REGTEST_DRIVER_REG_ALL:
3119 param.reg_alpha2 = hwsim_alpha2s[0];
3120 break;
3121 case HWSIM_REGTEST_WORLD_ROAM:
3122 if (i == 0)
3123 param.regd = &hwsim_world_regdom_custom_01;
3124 break;
3125 case HWSIM_REGTEST_CUSTOM_WORLD:
3126 param.regd = &hwsim_world_regdom_custom_01;
3127 break;
3128 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3129 if (i == 0)
3130 param.regd = &hwsim_world_regdom_custom_01;
3131 else if (i == 1)
3132 param.regd = &hwsim_world_regdom_custom_02;
3133 break;
3134 case HWSIM_REGTEST_STRICT_FOLLOW:
3135 if (i == 0) {
3136 param.reg_strict = true;
3137 param.reg_alpha2 = hwsim_alpha2s[0];
3138 }
3139 break;
3140 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3141 if (i == 0) {
3142 param.reg_strict = true;
3143 param.reg_alpha2 = hwsim_alpha2s[0];
3144 } else if (i == 1) {
3145 param.reg_alpha2 = hwsim_alpha2s[1];
3146 }
3147 break;
3148 case HWSIM_REGTEST_ALL:
3149 switch (i) {
3150 case 0:
3151 param.regd = &hwsim_world_regdom_custom_01;
3152 break;
3153 case 1:
3154 param.regd = &hwsim_world_regdom_custom_02;
3155 break;
3156 case 2:
3157 param.reg_alpha2 = hwsim_alpha2s[0];
3158 break;
3159 case 3:
3160 param.reg_alpha2 = hwsim_alpha2s[1];
3161 break;
3162 case 4:
3163 param.reg_strict = true;
3164 param.reg_alpha2 = hwsim_alpha2s[2];
3165 break;
3166 }
3167 break;
3168 default:
3169 break;
3170 }
3171
3172 param.p2p_device = support_p2p_device;
3173 param.use_chanctx = channels > 1;
3174
3175 err = mac80211_hwsim_new_radio(NULL, &param);
3176 if (err < 0)
3177 goto out_free_radios;
3178 }
3179
3180 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3181 hwsim_mon_setup);
3182 if (hwsim_mon == NULL) {
3183 err = -ENOMEM;
3184 goto out_free_radios;
3185 }
3186
3187 rtnl_lock();
3188 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3189 if (err < 0) {
3190 rtnl_unlock();
3191 goto out_free_radios;
3192 }
3193
3194 err = register_netdevice(hwsim_mon);
3195 if (err < 0) {
3196 rtnl_unlock();
3197 goto out_free_mon;
3198 }
3199 rtnl_unlock();
3200
3201 return 0;
3202
3203 out_free_mon:
3204 free_netdev(hwsim_mon);
3205 out_free_radios:
3206 mac80211_hwsim_free();
3207 out_unregister_driver:
3208 platform_driver_unregister(&mac80211_hwsim_driver);
3209 return err;
3210 }
3211 module_init(init_mac80211_hwsim);
3212
3213 static void __exit exit_mac80211_hwsim(void)
3214 {
3215 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3216
3217 hwsim_exit_netlink();
3218
3219 mac80211_hwsim_free();
3220 unregister_netdev(hwsim_mon);
3221 platform_driver_unregister(&mac80211_hwsim_driver);
3222 }
3223 module_exit(exit_mac80211_hwsim);
Linux with added FPC-III support