projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge tag 'trace-fixes-v4.0-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/platform_device.h>
29 #include <linux/debugfs.h>
30 #include <linux/module.h>
31 #include <linux/ktime.h>
32 #include <net/genetlink.h>
33 #include "mac80211_hwsim.h"
34
35 #define WARN_QUEUE 100
36 #define MAX_QUEUE 200
37
38 MODULE_AUTHOR("Jouni Malinen");
39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
40 MODULE_LICENSE("GPL");
41
42 static u32 wmediumd_portid;
43
44 static int radios = 2;
45 module_param(radios, int, 0444);
46 MODULE_PARM_DESC(radios, "Number of simulated radios");
47
48 static int channels = 1;
49 module_param(channels, int, 0444);
50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
51
52 static bool paged_rx = false;
53 module_param(paged_rx, bool, 0644);
54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
55
56 static bool rctbl = false;
57 module_param(rctbl, bool, 0444);
58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
59
60 static bool support_p2p_device = true;
61 module_param(support_p2p_device, bool, 0444);
62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
63
64 /**
65 * enum hwsim_regtest - the type of regulatory tests we offer
66 *
67 * These are the different values you can use for the regtest
68 * module parameter. This is useful to help test world roaming
69 * and the driver regulatory_hint() call and combinations of these.
70 * If you want to do specific alpha2 regulatory domain tests simply
71 * use the userspace regulatory request as that will be respected as
72 * well without the need of this module parameter. This is designed
73 * only for testing the driver regulatory request, world roaming
74 * and all possible combinations.
75 *
76 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
77 * this is the default value.
78 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
79 * hint, only one driver regulatory hint will be sent as such the
80 * secondary radios are expected to follow.
81 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
82 * request with all radios reporting the same regulatory domain.
83 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
84 * different regulatory domains requests. Expected behaviour is for
85 * an intersection to occur but each device will still use their
86 * respective regulatory requested domains. Subsequent radios will
87 * use the resulting intersection.
88 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
89 * this by using a custom beacon-capable regulatory domain for the first
90 * radio. All other device world roam.
91 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
92 * domain requests. All radios will adhere to this custom world regulatory
93 * domain.
94 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
95 * domain requests. The first radio will adhere to the first custom world
96 * regulatory domain, the second one to the second custom world regulatory
97 * domain. All other devices will world roam.
98 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
99 * settings, only the first radio will send a regulatory domain request
100 * and use strict settings. The rest of the radios are expected to follow.
101 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
102 * settings. All radios will adhere to this.
103 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
104 * domain settings, combined with secondary driver regulatory domain
105 * settings. The first radio will get a strict regulatory domain setting
106 * using the first driver regulatory request and the second radio will use
107 * non-strict settings using the second driver regulatory request. All
108 * other devices should follow the intersection created between the
109 * first two.
110 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
111 * at least 6 radios for a complete test. We will test in this order:
112 * 1 - driver custom world regulatory domain
113 * 2 - second custom world regulatory domain
114 * 3 - first driver regulatory domain request
115 * 4 - second driver regulatory domain request
116 * 5 - strict regulatory domain settings using the third driver regulatory
117 * domain request
118 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
119 * regulatory requests.
120 */
121 enum hwsim_regtest {
122 HWSIM_REGTEST_DISABLED = 0,
123 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
124 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
125 HWSIM_REGTEST_DIFF_COUNTRY = 3,
126 HWSIM_REGTEST_WORLD_ROAM = 4,
127 HWSIM_REGTEST_CUSTOM_WORLD = 5,
128 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
129 HWSIM_REGTEST_STRICT_FOLLOW = 7,
130 HWSIM_REGTEST_STRICT_ALL = 8,
131 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
132 HWSIM_REGTEST_ALL = 10,
133 };
134
135 /* Set to one of the HWSIM_REGTEST_* values above */
136 static int regtest = HWSIM_REGTEST_DISABLED;
137 module_param(regtest, int, 0444);
138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
139
140 static const char *hwsim_alpha2s[] = {
141 "FI",
142 "AL",
143 "US",
144 "DE",
145 "JP",
146 "AL",
147 };
148
149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
150 .n_reg_rules = 4,
151 .alpha2 = "99",
152 .reg_rules = {
153 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
154 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
155 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
156 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
157 }
158 };
159
160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
161 .n_reg_rules = 2,
162 .alpha2 = "99",
163 .reg_rules = {
164 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
165 REG_RULE(5725-10, 5850+10, 40, 0, 30,
166 NL80211_RRF_NO_IR),
167 }
168 };
169
170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
171 &hwsim_world_regdom_custom_01,
172 &hwsim_world_regdom_custom_02,
173 };
174
175 struct hwsim_vif_priv {
176 u32 magic;
177 u8 bssid[ETH_ALEN];
178 bool assoc;
179 bool bcn_en;
180 u16 aid;
181 };
182
183 #define HWSIM_VIF_MAGIC 0x69537748
184
185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
186 {
187 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
188 WARN(vp->magic != HWSIM_VIF_MAGIC,
189 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
190 vif, vp->magic, vif->addr, vif->type, vif->p2p);
191 }
192
193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
194 {
195 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
196 vp->magic = HWSIM_VIF_MAGIC;
197 }
198
199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
200 {
201 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
202 vp->magic = 0;
203 }
204
205 struct hwsim_sta_priv {
206 u32 magic;
207 };
208
209 #define HWSIM_STA_MAGIC 0x6d537749
210
211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
212 {
213 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
214 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
215 }
216
217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
218 {
219 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
220 sp->magic = HWSIM_STA_MAGIC;
221 }
222
223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
224 {
225 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
226 sp->magic = 0;
227 }
228
229 struct hwsim_chanctx_priv {
230 u32 magic;
231 };
232
233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
234
235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
236 {
237 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
238 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
239 }
240
241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
242 {
243 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
244 cp->magic = HWSIM_CHANCTX_MAGIC;
245 }
246
247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
248 {
249 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
250 cp->magic = 0;
251 }
252
253 static struct class *hwsim_class;
254
255 static struct net_device *hwsim_mon; /* global monitor netdev */
256
257 #define CHAN2G(_freq) { \
258 .band = IEEE80211_BAND_2GHZ, \
259 .center_freq = (_freq), \
260 .hw_value = (_freq), \
261 .max_power = 20, \
262 }
263
264 #define CHAN5G(_freq) { \
265 .band = IEEE80211_BAND_5GHZ, \
266 .center_freq = (_freq), \
267 .hw_value = (_freq), \
268 .max_power = 20, \
269 }
270
271 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
272 CHAN2G(2412), /* Channel 1 */
273 CHAN2G(2417), /* Channel 2 */
274 CHAN2G(2422), /* Channel 3 */
275 CHAN2G(2427), /* Channel 4 */
276 CHAN2G(2432), /* Channel 5 */
277 CHAN2G(2437), /* Channel 6 */
278 CHAN2G(2442), /* Channel 7 */
279 CHAN2G(2447), /* Channel 8 */
280 CHAN2G(2452), /* Channel 9 */
281 CHAN2G(2457), /* Channel 10 */
282 CHAN2G(2462), /* Channel 11 */
283 CHAN2G(2467), /* Channel 12 */
284 CHAN2G(2472), /* Channel 13 */
285 CHAN2G(2484), /* Channel 14 */
286 };
287
288 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
289 CHAN5G(5180), /* Channel 36 */
290 CHAN5G(5200), /* Channel 40 */
291 CHAN5G(5220), /* Channel 44 */
292 CHAN5G(5240), /* Channel 48 */
293
294 CHAN5G(5260), /* Channel 52 */
295 CHAN5G(5280), /* Channel 56 */
296 CHAN5G(5300), /* Channel 60 */
297 CHAN5G(5320), /* Channel 64 */
298
299 CHAN5G(5500), /* Channel 100 */
300 CHAN5G(5520), /* Channel 104 */
301 CHAN5G(5540), /* Channel 108 */
302 CHAN5G(5560), /* Channel 112 */
303 CHAN5G(5580), /* Channel 116 */
304 CHAN5G(5600), /* Channel 120 */
305 CHAN5G(5620), /* Channel 124 */
306 CHAN5G(5640), /* Channel 128 */
307 CHAN5G(5660), /* Channel 132 */
308 CHAN5G(5680), /* Channel 136 */
309 CHAN5G(5700), /* Channel 140 */
310
311 CHAN5G(5745), /* Channel 149 */
312 CHAN5G(5765), /* Channel 153 */
313 CHAN5G(5785), /* Channel 157 */
314 CHAN5G(5805), /* Channel 161 */
315 CHAN5G(5825), /* Channel 165 */
316 };
317
318 static const struct ieee80211_rate hwsim_rates[] = {
319 { .bitrate = 10 },
320 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
321 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
322 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
323 { .bitrate = 60 },
324 { .bitrate = 90 },
325 { .bitrate = 120 },
326 { .bitrate = 180 },
327 { .bitrate = 240 },
328 { .bitrate = 360 },
329 { .bitrate = 480 },
330 { .bitrate = 540 }
331 };
332
333 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
334 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
335 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
336 BIT(NL80211_IFTYPE_P2P_CLIENT) |
337 #ifdef CONFIG_MAC80211_MESH
338 BIT(NL80211_IFTYPE_MESH_POINT) |
339 #endif
340 BIT(NL80211_IFTYPE_AP) |
341 BIT(NL80211_IFTYPE_P2P_GO) },
342 /* must be last, see hwsim_if_comb */
343 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
344 };
345
346 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
347 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
348 };
349
350 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
351 {
352 .limits = hwsim_if_limits,
353 /* remove the last entry which is P2P_DEVICE */
354 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
355 .max_interfaces = 2048,
356 .num_different_channels = 1,
357 },
358 {
359 .limits = hwsim_if_dfs_limits,
360 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
361 .max_interfaces = 8,
362 .num_different_channels = 1,
363 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
364 BIT(NL80211_CHAN_WIDTH_20) |
365 BIT(NL80211_CHAN_WIDTH_40) |
366 BIT(NL80211_CHAN_WIDTH_80) |
367 BIT(NL80211_CHAN_WIDTH_160),
368 }
369 };
370
371 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
372 {
373 .limits = hwsim_if_limits,
374 .n_limits = ARRAY_SIZE(hwsim_if_limits),
375 .max_interfaces = 2048,
376 .num_different_channels = 1,
377 },
378 {
379 .limits = hwsim_if_dfs_limits,
380 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
381 .max_interfaces = 8,
382 .num_different_channels = 1,
383 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
384 BIT(NL80211_CHAN_WIDTH_20) |
385 BIT(NL80211_CHAN_WIDTH_40) |
386 BIT(NL80211_CHAN_WIDTH_80) |
387 BIT(NL80211_CHAN_WIDTH_160),
388 }
389 };
390
391 static spinlock_t hwsim_radio_lock;
392 static struct list_head hwsim_radios;
393 static int hwsim_radio_idx;
394
395 static struct platform_driver mac80211_hwsim_driver = {
396 .driver = {
397 .name = "mac80211_hwsim",
398 },
399 };
400
401 struct mac80211_hwsim_data {
402 struct list_head list;
403 struct ieee80211_hw *hw;
404 struct device *dev;
405 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
406 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
407 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
408 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
409 struct ieee80211_iface_combination if_combination;
410
411 struct mac_address addresses[2];
412 int channels, idx;
413 bool use_chanctx;
414 bool destroy_on_close;
415 struct work_struct destroy_work;
416 u32 portid;
417 char alpha2[2];
418 const struct ieee80211_regdomain *regd;
419
420 struct ieee80211_channel *tmp_chan;
421 struct delayed_work roc_done;
422 struct delayed_work hw_scan;
423 struct cfg80211_scan_request *hw_scan_request;
424 struct ieee80211_vif *hw_scan_vif;
425 int scan_chan_idx;
426 u8 scan_addr[ETH_ALEN];
427
428 struct ieee80211_channel *channel;
429 u64 beacon_int /* beacon interval in us */;
430 unsigned int rx_filter;
431 bool started, idle, scanning;
432 struct mutex mutex;
433 struct tasklet_hrtimer beacon_timer;
434 enum ps_mode {
435 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
436 } ps;
437 bool ps_poll_pending;
438 struct dentry *debugfs;
439
440 struct sk_buff_head pending; /* packets pending */
441 /*
442 * Only radios in the same group can communicate together (the
443 * channel has to match too). Each bit represents a group. A
444 * radio can be in more than one group.
445 */
446 u64 group;
447
448 int power_level;
449
450 /* difference between this hw's clock and the real clock, in usecs */
451 s64 tsf_offset;
452 s64 bcn_delta;
453 /* absolute beacon transmission time. Used to cover up "tx" delay. */
454 u64 abs_bcn_ts;
455
456 /* Stats */
457 u64 tx_pkts;
458 u64 rx_pkts;
459 u64 tx_bytes;
460 u64 rx_bytes;
461 u64 tx_dropped;
462 u64 tx_failed;
463 };
464
465
466 struct hwsim_radiotap_hdr {
467 struct ieee80211_radiotap_header hdr;
468 __le64 rt_tsft;
469 u8 rt_flags;
470 u8 rt_rate;
471 __le16 rt_channel;
472 __le16 rt_chbitmask;
473 } __packed;
474
475 struct hwsim_radiotap_ack_hdr {
476 struct ieee80211_radiotap_header hdr;
477 u8 rt_flags;
478 u8 pad;
479 __le16 rt_channel;
480 __le16 rt_chbitmask;
481 } __packed;
482
483 /* MAC80211_HWSIM netlinf family */
484 static struct genl_family hwsim_genl_family = {
485 .id = GENL_ID_GENERATE,
486 .hdrsize = 0,
487 .name = "MAC80211_HWSIM",
488 .version = 1,
489 .maxattr = HWSIM_ATTR_MAX,
490 };
491
492 enum hwsim_multicast_groups {
493 HWSIM_MCGRP_CONFIG,
494 };
495
496 static const struct genl_multicast_group hwsim_mcgrps[] = {
497 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
498 };
499
500 /* MAC80211_HWSIM netlink policy */
501
502 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
503 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
504 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
505 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
506 .len = IEEE80211_MAX_DATA_LEN },
507 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
508 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
509 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
510 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
511 .len = IEEE80211_TX_MAX_RATES *
512 sizeof(struct hwsim_tx_rate)},
513 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
514 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
515 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
516 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
517 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
518 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
519 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
520 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
521 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
522 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
523 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
524 };
525
526 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
527 struct sk_buff *skb,
528 struct ieee80211_channel *chan);
529
530 /* sysfs attributes */
531 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
532 {
533 struct mac80211_hwsim_data *data = dat;
534 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
535 struct sk_buff *skb;
536 struct ieee80211_pspoll *pspoll;
537
538 if (!vp->assoc)
539 return;
540
541 wiphy_debug(data->hw->wiphy,
542 "%s: send PS-Poll to %pM for aid %d\n",
543 __func__, vp->bssid, vp->aid);
544
545 skb = dev_alloc_skb(sizeof(*pspoll));
546 if (!skb)
547 return;
548 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
549 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
550 IEEE80211_STYPE_PSPOLL |
551 IEEE80211_FCTL_PM);
552 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
553 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
554 memcpy(pspoll->ta, mac, ETH_ALEN);
555
556 rcu_read_lock();
557 mac80211_hwsim_tx_frame(data->hw, skb,
558 rcu_dereference(vif->chanctx_conf)->def.chan);
559 rcu_read_unlock();
560 }
561
562 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
563 struct ieee80211_vif *vif, int ps)
564 {
565 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
566 struct sk_buff *skb;
567 struct ieee80211_hdr *hdr;
568
569 if (!vp->assoc)
570 return;
571
572 wiphy_debug(data->hw->wiphy,
573 "%s: send data::nullfunc to %pM ps=%d\n",
574 __func__, vp->bssid, ps);
575
576 skb = dev_alloc_skb(sizeof(*hdr));
577 if (!skb)
578 return;
579 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
580 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
581 IEEE80211_STYPE_NULLFUNC |
582 (ps ? IEEE80211_FCTL_PM : 0));
583 hdr->duration_id = cpu_to_le16(0);
584 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
585 memcpy(hdr->addr2, mac, ETH_ALEN);
586 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
587
588 rcu_read_lock();
589 mac80211_hwsim_tx_frame(data->hw, skb,
590 rcu_dereference(vif->chanctx_conf)->def.chan);
591 rcu_read_unlock();
592 }
593
594
595 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
596 struct ieee80211_vif *vif)
597 {
598 struct mac80211_hwsim_data *data = dat;
599 hwsim_send_nullfunc(data, mac, vif, 1);
600 }
601
602 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
603 struct ieee80211_vif *vif)
604 {
605 struct mac80211_hwsim_data *data = dat;
606 hwsim_send_nullfunc(data, mac, vif, 0);
607 }
608
609 static int hwsim_fops_ps_read(void *dat, u64 *val)
610 {
611 struct mac80211_hwsim_data *data = dat;
612 *val = data->ps;
613 return 0;
614 }
615
616 static int hwsim_fops_ps_write(void *dat, u64 val)
617 {
618 struct mac80211_hwsim_data *data = dat;
619 enum ps_mode old_ps;
620
621 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
622 val != PS_MANUAL_POLL)
623 return -EINVAL;
624
625 old_ps = data->ps;
626 data->ps = val;
627
628 local_bh_disable();
629 if (val == PS_MANUAL_POLL) {
630 ieee80211_iterate_active_interfaces_atomic(
631 data->hw, IEEE80211_IFACE_ITER_NORMAL,
632 hwsim_send_ps_poll, data);
633 data->ps_poll_pending = true;
634 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
635 ieee80211_iterate_active_interfaces_atomic(
636 data->hw, IEEE80211_IFACE_ITER_NORMAL,
637 hwsim_send_nullfunc_ps, data);
638 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
639 ieee80211_iterate_active_interfaces_atomic(
640 data->hw, IEEE80211_IFACE_ITER_NORMAL,
641 hwsim_send_nullfunc_no_ps, data);
642 }
643 local_bh_enable();
644
645 return 0;
646 }
647
648 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
649 "%llu\n");
650
651 static int hwsim_write_simulate_radar(void *dat, u64 val)
652 {
653 struct mac80211_hwsim_data *data = dat;
654
655 ieee80211_radar_detected(data->hw);
656
657 return 0;
658 }
659
660 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
661 hwsim_write_simulate_radar, "%llu\n");
662
663 static int hwsim_fops_group_read(void *dat, u64 *val)
664 {
665 struct mac80211_hwsim_data *data = dat;
666 *val = data->group;
667 return 0;
668 }
669
670 static int hwsim_fops_group_write(void *dat, u64 val)
671 {
672 struct mac80211_hwsim_data *data = dat;
673 data->group = val;
674 return 0;
675 }
676
677 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
678 hwsim_fops_group_read, hwsim_fops_group_write,
679 "%llx\n");
680
681 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
682 struct net_device *dev)
683 {
684 /* TODO: allow packet injection */
685 dev_kfree_skb(skb);
686 return NETDEV_TX_OK;
687 }
688
689 static inline u64 mac80211_hwsim_get_tsf_raw(void)
690 {
691 return ktime_to_us(ktime_get_real());
692 }
693
694 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
695 {
696 u64 now = mac80211_hwsim_get_tsf_raw();
697 return cpu_to_le64(now + data->tsf_offset);
698 }
699
700 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
701 struct ieee80211_vif *vif)
702 {
703 struct mac80211_hwsim_data *data = hw->priv;
704 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
705 }
706
707 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
708 struct ieee80211_vif *vif, u64 tsf)
709 {
710 struct mac80211_hwsim_data *data = hw->priv;
711 u64 now = mac80211_hwsim_get_tsf(hw, vif);
712 u32 bcn_int = data->beacon_int;
713 u64 delta = abs64(tsf - now);
714
715 /* adjust after beaconing with new timestamp at old TBTT */
716 if (tsf > now) {
717 data->tsf_offset += delta;
718 data->bcn_delta = do_div(delta, bcn_int);
719 } else {
720 data->tsf_offset -= delta;
721 data->bcn_delta = -do_div(delta, bcn_int);
722 }
723 }
724
725 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
726 struct sk_buff *tx_skb,
727 struct ieee80211_channel *chan)
728 {
729 struct mac80211_hwsim_data *data = hw->priv;
730 struct sk_buff *skb;
731 struct hwsim_radiotap_hdr *hdr;
732 u16 flags;
733 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
734 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
735
736 if (!netif_running(hwsim_mon))
737 return;
738
739 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
740 if (skb == NULL)
741 return;
742
743 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
744 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
745 hdr->hdr.it_pad = 0;
746 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
747 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
748 (1 << IEEE80211_RADIOTAP_RATE) |
749 (1 << IEEE80211_RADIOTAP_TSFT) |
750 (1 << IEEE80211_RADIOTAP_CHANNEL));
751 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
752 hdr->rt_flags = 0;
753 hdr->rt_rate = txrate->bitrate / 5;
754 hdr->rt_channel = cpu_to_le16(chan->center_freq);
755 flags = IEEE80211_CHAN_2GHZ;
756 if (txrate->flags & IEEE80211_RATE_ERP_G)
757 flags |= IEEE80211_CHAN_OFDM;
758 else
759 flags |= IEEE80211_CHAN_CCK;
760 hdr->rt_chbitmask = cpu_to_le16(flags);
761
762 skb->dev = hwsim_mon;
763 skb_set_mac_header(skb, 0);
764 skb->ip_summed = CHECKSUM_UNNECESSARY;
765 skb->pkt_type = PACKET_OTHERHOST;
766 skb->protocol = htons(ETH_P_802_2);
767 memset(skb->cb, 0, sizeof(skb->cb));
768 netif_rx(skb);
769 }
770
771
772 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
773 const u8 *addr)
774 {
775 struct sk_buff *skb;
776 struct hwsim_radiotap_ack_hdr *hdr;
777 u16 flags;
778 struct ieee80211_hdr *hdr11;
779
780 if (!netif_running(hwsim_mon))
781 return;
782
783 skb = dev_alloc_skb(100);
784 if (skb == NULL)
785 return;
786
787 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
788 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
789 hdr->hdr.it_pad = 0;
790 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
791 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
792 (1 << IEEE80211_RADIOTAP_CHANNEL));
793 hdr->rt_flags = 0;
794 hdr->pad = 0;
795 hdr->rt_channel = cpu_to_le16(chan->center_freq);
796 flags = IEEE80211_CHAN_2GHZ;
797 hdr->rt_chbitmask = cpu_to_le16(flags);
798
799 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
800 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
801 IEEE80211_STYPE_ACK);
802 hdr11->duration_id = cpu_to_le16(0);
803 memcpy(hdr11->addr1, addr, ETH_ALEN);
804
805 skb->dev = hwsim_mon;
806 skb_set_mac_header(skb, 0);
807 skb->ip_summed = CHECKSUM_UNNECESSARY;
808 skb->pkt_type = PACKET_OTHERHOST;
809 skb->protocol = htons(ETH_P_802_2);
810 memset(skb->cb, 0, sizeof(skb->cb));
811 netif_rx(skb);
812 }
813
814 struct mac80211_hwsim_addr_match_data {
815 u8 addr[ETH_ALEN];
816 bool ret;
817 };
818
819 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
820 struct ieee80211_vif *vif)
821 {
822 struct mac80211_hwsim_addr_match_data *md = data;
823
824 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
825 md->ret = true;
826 }
827
828 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
829 const u8 *addr)
830 {
831 struct mac80211_hwsim_addr_match_data md = {
832 .ret = false,
833 };
834
835 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
836 return true;
837
838 memcpy(md.addr, addr, ETH_ALEN);
839
840 ieee80211_iterate_active_interfaces_atomic(data->hw,
841 IEEE80211_IFACE_ITER_NORMAL,
842 mac80211_hwsim_addr_iter,
843 &md);
844
845 return md.ret;
846 }
847
848 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
849 struct sk_buff *skb)
850 {
851 switch (data->ps) {
852 case PS_DISABLED:
853 return true;
854 case PS_ENABLED:
855 return false;
856 case PS_AUTO_POLL:
857 /* TODO: accept (some) Beacons by default and other frames only
858 * if pending PS-Poll has been sent */
859 return true;
860 case PS_MANUAL_POLL:
861 /* Allow unicast frames to own address if there is a pending
862 * PS-Poll */
863 if (data->ps_poll_pending &&
864 mac80211_hwsim_addr_match(data, skb->data + 4)) {
865 data->ps_poll_pending = false;
866 return true;
867 }
868 return false;
869 }
870
871 return true;
872 }
873
874 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
875 struct sk_buff *my_skb,
876 int dst_portid)
877 {
878 struct sk_buff *skb;
879 struct mac80211_hwsim_data *data = hw->priv;
880 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
881 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
882 void *msg_head;
883 unsigned int hwsim_flags = 0;
884 int i;
885 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
886
887 if (data->ps != PS_DISABLED)
888 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
889 /* If the queue contains MAX_QUEUE skb's drop some */
890 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
891 /* Droping until WARN_QUEUE level */
892 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
893 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
894 data->tx_dropped++;
895 }
896 }
897
898 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
899 if (skb == NULL)
900 goto nla_put_failure;
901
902 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
903 HWSIM_CMD_FRAME);
904 if (msg_head == NULL) {
905 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
906 goto nla_put_failure;
907 }
908
909 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
910 ETH_ALEN, data->addresses[1].addr))
911 goto nla_put_failure;
912
913 /* We get the skb->data */
914 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
915 goto nla_put_failure;
916
917 /* We get the flags for this transmission, and we translate them to
918 wmediumd flags */
919
920 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
921 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
922
923 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
924 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
925
926 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
927 goto nla_put_failure;
928
929 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
930 goto nla_put_failure;
931
932 /* We get the tx control (rate and retries) info*/
933
934 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
935 tx_attempts[i].idx = info->status.rates[i].idx;
936 tx_attempts[i].count = info->status.rates[i].count;
937 }
938
939 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
940 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
941 tx_attempts))
942 goto nla_put_failure;
943
944 /* We create a cookie to identify this skb */
945 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
946 goto nla_put_failure;
947
948 genlmsg_end(skb, msg_head);
949 if (genlmsg_unicast(&init_net, skb, dst_portid))
950 goto err_free_txskb;
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 nlmsg_free(skb);
960 err_free_txskb:
961 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
962 ieee80211_free_txskb(hw, my_skb);
963 data->tx_failed++;
964 }
965
966 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
967 struct ieee80211_channel *c2)
968 {
969 if (!c1 || !c2)
970 return false;
971
972 return c1->center_freq == c2->center_freq;
973 }
974
975 struct tx_iter_data {
976 struct ieee80211_channel *channel;
977 bool receive;
978 };
979
980 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
981 struct ieee80211_vif *vif)
982 {
983 struct tx_iter_data *data = _data;
984
985 if (!vif->chanctx_conf)
986 return;
987
988 if (!hwsim_chans_compat(data->channel,
989 rcu_dereference(vif->chanctx_conf)->def.chan))
990 return;
991
992 data->receive = true;
993 }
994
995 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
996 {
997 /*
998 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
999 * e.g. like this:
1000 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1001 * (but you should use a valid OUI, not that)
1002 *
1003 * If anyone wants to 'donate' a radiotap OUI/subns code
1004 * please send a patch removing this #ifdef and changing
1005 * the values accordingly.
1006 */
1007 #ifdef HWSIM_RADIOTAP_OUI
1008 struct ieee80211_vendor_radiotap *rtap;
1009
1010 /*
1011 * Note that this code requires the headroom in the SKB
1012 * that was allocated earlier.
1013 */
1014 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1015 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1016 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1017 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1018 rtap->subns = 127;
1019
1020 /*
1021 * Radiotap vendor namespaces can (and should) also be
1022 * split into fields by using the standard radiotap
1023 * presence bitmap mechanism. Use just BIT(0) here for
1024 * the presence bitmap.
1025 */
1026 rtap->present = BIT(0);
1027 /* We have 8 bytes of (dummy) data */
1028 rtap->len = 8;
1029 /* For testing, also require it to be aligned */
1030 rtap->align = 8;
1031 /* And also test that padding works, 4 bytes */
1032 rtap->pad = 4;
1033 /* push the data */
1034 memcpy(rtap->data, "ABCDEFGH", 8);
1035 /* make sure to clear padding, mac80211 doesn't */
1036 memset(rtap->data + 8, 0, 4);
1037
1038 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1039 #endif
1040 }
1041
1042 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1043 struct sk_buff *skb,
1044 struct ieee80211_channel *chan)
1045 {
1046 struct mac80211_hwsim_data *data = hw->priv, *data2;
1047 bool ack = false;
1048 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1049 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1050 struct ieee80211_rx_status rx_status;
1051 u64 now;
1052
1053 memset(&rx_status, 0, sizeof(rx_status));
1054 rx_status.flag |= RX_FLAG_MACTIME_START;
1055 rx_status.freq = chan->center_freq;
1056 rx_status.band = chan->band;
1057 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1058 rx_status.rate_idx =
1059 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1060 rx_status.vht_nss =
1061 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1062 rx_status.flag |= RX_FLAG_VHT;
1063 } else {
1064 rx_status.rate_idx = info->control.rates[0].idx;
1065 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1066 rx_status.flag |= RX_FLAG_HT;
1067 }
1068 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1069 rx_status.flag |= RX_FLAG_40MHZ;
1070 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1071 rx_status.flag |= RX_FLAG_SHORT_GI;
1072 /* TODO: simulate real signal strength (and optional packet loss) */
1073 rx_status.signal = data->power_level - 50;
1074
1075 if (data->ps != PS_DISABLED)
1076 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1077
1078 /* release the skb's source info */
1079 skb_orphan(skb);
1080 skb_dst_drop(skb);
1081 skb->mark = 0;
1082 secpath_reset(skb);
1083 nf_reset(skb);
1084
1085 /*
1086 * Get absolute mactime here so all HWs RX at the "same time", and
1087 * absolute TX time for beacon mactime so the timestamp matches.
1088 * Giving beacons a different mactime than non-beacons looks messy, but
1089 * it helps the Toffset be exact and a ~10us mactime discrepancy
1090 * probably doesn't really matter.
1091 */
1092 if (ieee80211_is_beacon(hdr->frame_control) ||
1093 ieee80211_is_probe_resp(hdr->frame_control))
1094 now = data->abs_bcn_ts;
1095 else
1096 now = mac80211_hwsim_get_tsf_raw();
1097
1098 /* Copy skb to all enabled radios that are on the current frequency */
1099 spin_lock(&hwsim_radio_lock);
1100 list_for_each_entry(data2, &hwsim_radios, list) {
1101 struct sk_buff *nskb;
1102 struct tx_iter_data tx_iter_data = {
1103 .receive = false,
1104 .channel = chan,
1105 };
1106
1107 if (data == data2)
1108 continue;
1109
1110 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1111 !hwsim_ps_rx_ok(data2, skb))
1112 continue;
1113
1114 if (!(data->group & data2->group))
1115 continue;
1116
1117 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1118 !hwsim_chans_compat(chan, data2->channel)) {
1119 ieee80211_iterate_active_interfaces_atomic(
1120 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1121 mac80211_hwsim_tx_iter, &tx_iter_data);
1122 if (!tx_iter_data.receive)
1123 continue;
1124 }
1125
1126 /*
1127 * reserve some space for our vendor and the normal
1128 * radiotap header, since we're copying anyway
1129 */
1130 if (skb->len < PAGE_SIZE && paged_rx) {
1131 struct page *page = alloc_page(GFP_ATOMIC);
1132
1133 if (!page)
1134 continue;
1135
1136 nskb = dev_alloc_skb(128);
1137 if (!nskb) {
1138 __free_page(page);
1139 continue;
1140 }
1141
1142 memcpy(page_address(page), skb->data, skb->len);
1143 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1144 } else {
1145 nskb = skb_copy(skb, GFP_ATOMIC);
1146 if (!nskb)
1147 continue;
1148 }
1149
1150 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1151 ack = true;
1152
1153 rx_status.mactime = now + data2->tsf_offset;
1154
1155 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1156
1157 mac80211_hwsim_add_vendor_rtap(nskb);
1158
1159 data2->rx_pkts++;
1160 data2->rx_bytes += nskb->len;
1161 ieee80211_rx_irqsafe(data2->hw, nskb);
1162 }
1163 spin_unlock(&hwsim_radio_lock);
1164
1165 return ack;
1166 }
1167
1168 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1169 struct ieee80211_tx_control *control,
1170 struct sk_buff *skb)
1171 {
1172 struct mac80211_hwsim_data *data = hw->priv;
1173 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1174 struct ieee80211_chanctx_conf *chanctx_conf;
1175 struct ieee80211_channel *channel;
1176 bool ack;
1177 u32 _portid;
1178
1179 if (WARN_ON(skb->len < 10)) {
1180 /* Should not happen; just a sanity check for addr1 use */
1181 ieee80211_free_txskb(hw, skb);
1182 return;
1183 }
1184
1185 if (!data->use_chanctx) {
1186 channel = data->channel;
1187 } else if (txi->hw_queue == 4) {
1188 channel = data->tmp_chan;
1189 } else {
1190 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1191 if (chanctx_conf)
1192 channel = chanctx_conf->def.chan;
1193 else
1194 channel = NULL;
1195 }
1196
1197 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1198 ieee80211_free_txskb(hw, skb);
1199 return;
1200 }
1201
1202 if (data->idle && !data->tmp_chan) {
1203 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1204 ieee80211_free_txskb(hw, skb);
1205 return;
1206 }
1207
1208 if (txi->control.vif)
1209 hwsim_check_magic(txi->control.vif);
1210 if (control->sta)
1211 hwsim_check_sta_magic(control->sta);
1212
1213 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1214 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1215 txi->control.rates,
1216 ARRAY_SIZE(txi->control.rates));
1217
1218 txi->rate_driver_data[0] = channel;
1219 mac80211_hwsim_monitor_rx(hw, skb, channel);
1220
1221 /* wmediumd mode check */
1222 _portid = ACCESS_ONCE(wmediumd_portid);
1223
1224 if (_portid)
1225 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1226
1227 /* NO wmediumd detected, perfect medium simulation */
1228 data->tx_pkts++;
1229 data->tx_bytes += skb->len;
1230 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1231
1232 if (ack && skb->len >= 16) {
1233 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1234 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1235 }
1236
1237 ieee80211_tx_info_clear_status(txi);
1238
1239 /* frame was transmitted at most favorable rate at first attempt */
1240 txi->control.rates[0].count = 1;
1241 txi->control.rates[1].idx = -1;
1242
1243 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1244 txi->flags |= IEEE80211_TX_STAT_ACK;
1245 ieee80211_tx_status_irqsafe(hw, skb);
1246 }
1247
1248
1249 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1250 {
1251 struct mac80211_hwsim_data *data = hw->priv;
1252 wiphy_debug(hw->wiphy, "%s\n", __func__);
1253 data->started = true;
1254 return 0;
1255 }
1256
1257
1258 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1259 {
1260 struct mac80211_hwsim_data *data = hw->priv;
1261 data->started = false;
1262 tasklet_hrtimer_cancel(&data->beacon_timer);
1263 wiphy_debug(hw->wiphy, "%s\n", __func__);
1264 }
1265
1266
1267 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1268 struct ieee80211_vif *vif)
1269 {
1270 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1271 __func__, ieee80211_vif_type_p2p(vif),
1272 vif->addr);
1273 hwsim_set_magic(vif);
1274
1275 vif->cab_queue = 0;
1276 vif->hw_queue[IEEE80211_AC_VO] = 0;
1277 vif->hw_queue[IEEE80211_AC_VI] = 1;
1278 vif->hw_queue[IEEE80211_AC_BE] = 2;
1279 vif->hw_queue[IEEE80211_AC_BK] = 3;
1280
1281 return 0;
1282 }
1283
1284
1285 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1286 struct ieee80211_vif *vif,
1287 enum nl80211_iftype newtype,
1288 bool newp2p)
1289 {
1290 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1291 wiphy_debug(hw->wiphy,
1292 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1293 __func__, ieee80211_vif_type_p2p(vif),
1294 newtype, vif->addr);
1295 hwsim_check_magic(vif);
1296
1297 /*
1298 * interface may change from non-AP to AP in
1299 * which case this needs to be set up again
1300 */
1301 vif->cab_queue = 0;
1302
1303 return 0;
1304 }
1305
1306 static void mac80211_hwsim_remove_interface(
1307 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1308 {
1309 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1310 __func__, ieee80211_vif_type_p2p(vif),
1311 vif->addr);
1312 hwsim_check_magic(vif);
1313 hwsim_clear_magic(vif);
1314 }
1315
1316 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1317 struct sk_buff *skb,
1318 struct ieee80211_channel *chan)
1319 {
1320 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1321
1322 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1323 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1324 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1325 txi->control.rates,
1326 ARRAY_SIZE(txi->control.rates));
1327 }
1328
1329 mac80211_hwsim_monitor_rx(hw, skb, chan);
1330
1331 if (_pid)
1332 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1333
1334 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1335 dev_kfree_skb(skb);
1336 }
1337
1338 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1339 struct ieee80211_vif *vif)
1340 {
1341 struct mac80211_hwsim_data *data = arg;
1342 struct ieee80211_hw *hw = data->hw;
1343 struct ieee80211_tx_info *info;
1344 struct ieee80211_rate *txrate;
1345 struct ieee80211_mgmt *mgmt;
1346 struct sk_buff *skb;
1347
1348 hwsim_check_magic(vif);
1349
1350 if (vif->type != NL80211_IFTYPE_AP &&
1351 vif->type != NL80211_IFTYPE_MESH_POINT &&
1352 vif->type != NL80211_IFTYPE_ADHOC)
1353 return;
1354
1355 skb = ieee80211_beacon_get(hw, vif);
1356 if (skb == NULL)
1357 return;
1358 info = IEEE80211_SKB_CB(skb);
1359 if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1360 ieee80211_get_tx_rates(vif, NULL, skb,
1361 info->control.rates,
1362 ARRAY_SIZE(info->control.rates));
1363
1364 txrate = ieee80211_get_tx_rate(hw, info);
1365
1366 mgmt = (struct ieee80211_mgmt *) skb->data;
1367 /* fake header transmission time */
1368 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1369 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1370 data->tsf_offset +
1371 24 * 8 * 10 / txrate->bitrate);
1372
1373 mac80211_hwsim_tx_frame(hw, skb,
1374 rcu_dereference(vif->chanctx_conf)->def.chan);
1375
1376 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1377 ieee80211_csa_finish(vif);
1378 }
1379
1380 static enum hrtimer_restart
1381 mac80211_hwsim_beacon(struct hrtimer *timer)
1382 {
1383 struct mac80211_hwsim_data *data =
1384 container_of(timer, struct mac80211_hwsim_data,
1385 beacon_timer.timer);
1386 struct ieee80211_hw *hw = data->hw;
1387 u64 bcn_int = data->beacon_int;
1388 ktime_t next_bcn;
1389
1390 if (!data->started)
1391 goto out;
1392
1393 ieee80211_iterate_active_interfaces_atomic(
1394 hw, IEEE80211_IFACE_ITER_NORMAL,
1395 mac80211_hwsim_beacon_tx, data);
1396
1397 /* beacon at new TBTT + beacon interval */
1398 if (data->bcn_delta) {
1399 bcn_int -= data->bcn_delta;
1400 data->bcn_delta = 0;
1401 }
1402
1403 next_bcn = ktime_add(hrtimer_get_expires(timer),
1404 ns_to_ktime(bcn_int * 1000));
1405 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1406 out:
1407 return HRTIMER_NORESTART;
1408 }
1409
1410 static const char * const hwsim_chanwidths[] = {
1411 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1412 [NL80211_CHAN_WIDTH_20] = "ht20",
1413 [NL80211_CHAN_WIDTH_40] = "ht40",
1414 [NL80211_CHAN_WIDTH_80] = "vht80",
1415 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1416 [NL80211_CHAN_WIDTH_160] = "vht160",
1417 };
1418
1419 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1420 {
1421 struct mac80211_hwsim_data *data = hw->priv;
1422 struct ieee80211_conf *conf = &hw->conf;
1423 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1424 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1425 [IEEE80211_SMPS_OFF] = "off",
1426 [IEEE80211_SMPS_STATIC] = "static",
1427 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1428 };
1429
1430 if (conf->chandef.chan)
1431 wiphy_debug(hw->wiphy,
1432 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1433 __func__,
1434 conf->chandef.chan->center_freq,
1435 conf->chandef.center_freq1,
1436 conf->chandef.center_freq2,
1437 hwsim_chanwidths[conf->chandef.width],
1438 !!(conf->flags & IEEE80211_CONF_IDLE),
1439 !!(conf->flags & IEEE80211_CONF_PS),
1440 smps_modes[conf->smps_mode]);
1441 else
1442 wiphy_debug(hw->wiphy,
1443 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1444 __func__,
1445 !!(conf->flags & IEEE80211_CONF_IDLE),
1446 !!(conf->flags & IEEE80211_CONF_PS),
1447 smps_modes[conf->smps_mode]);
1448
1449 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1450
1451 data->channel = conf->chandef.chan;
1452
1453 WARN_ON(data->channel && data->use_chanctx);
1454
1455 data->power_level = conf->power_level;
1456 if (!data->started || !data->beacon_int)
1457 tasklet_hrtimer_cancel(&data->beacon_timer);
1458 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1459 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1460 u32 bcn_int = data->beacon_int;
1461 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1462
1463 tasklet_hrtimer_start(&data->beacon_timer,
1464 ns_to_ktime(until_tbtt * 1000),
1465 HRTIMER_MODE_REL);
1466 }
1467
1468 return 0;
1469 }
1470
1471
1472 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1473 unsigned int changed_flags,
1474 unsigned int *total_flags,u64 multicast)
1475 {
1476 struct mac80211_hwsim_data *data = hw->priv;
1477
1478 wiphy_debug(hw->wiphy, "%s\n", __func__);
1479
1480 data->rx_filter = 0;
1481 if (*total_flags & FIF_PROMISC_IN_BSS)
1482 data->rx_filter |= FIF_PROMISC_IN_BSS;
1483 if (*total_flags & FIF_ALLMULTI)
1484 data->rx_filter |= FIF_ALLMULTI;
1485
1486 *total_flags = data->rx_filter;
1487 }
1488
1489 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1490 struct ieee80211_vif *vif)
1491 {
1492 unsigned int *count = data;
1493 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1494
1495 if (vp->bcn_en)
1496 (*count)++;
1497 }
1498
1499 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1500 struct ieee80211_vif *vif,
1501 struct ieee80211_bss_conf *info,
1502 u32 changed)
1503 {
1504 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1505 struct mac80211_hwsim_data *data = hw->priv;
1506
1507 hwsim_check_magic(vif);
1508
1509 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1510 __func__, changed, vif->addr);
1511
1512 if (changed & BSS_CHANGED_BSSID) {
1513 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1514 __func__, info->bssid);
1515 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1516 }
1517
1518 if (changed & BSS_CHANGED_ASSOC) {
1519 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1520 info->assoc, info->aid);
1521 vp->assoc = info->assoc;
1522 vp->aid = info->aid;
1523 }
1524
1525 if (changed & BSS_CHANGED_BEACON_INT) {
1526 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
1527 data->beacon_int = info->beacon_int * 1024;
1528 }
1529
1530 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1531 wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
1532 vp->bcn_en = info->enable_beacon;
1533 if (data->started &&
1534 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1535 info->enable_beacon) {
1536 u64 tsf, until_tbtt;
1537 u32 bcn_int;
1538 if (WARN_ON(!data->beacon_int))
1539 data->beacon_int = 1000 * 1024;
1540 tsf = mac80211_hwsim_get_tsf(hw, vif);
1541 bcn_int = data->beacon_int;
1542 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1543 tasklet_hrtimer_start(&data->beacon_timer,
1544 ns_to_ktime(until_tbtt * 1000),
1545 HRTIMER_MODE_REL);
1546 } else if (!info->enable_beacon) {
1547 unsigned int count = 0;
1548 ieee80211_iterate_active_interfaces_atomic(
1549 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1550 mac80211_hwsim_bcn_en_iter, &count);
1551 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1552 count);
1553 if (count == 0)
1554 tasklet_hrtimer_cancel(&data->beacon_timer);
1555 }
1556 }
1557
1558 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1559 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1560 info->use_cts_prot);
1561 }
1562
1563 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1564 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1565 info->use_short_preamble);
1566 }
1567
1568 if (changed & BSS_CHANGED_ERP_SLOT) {
1569 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1570 }
1571
1572 if (changed & BSS_CHANGED_HT) {
1573 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1574 info->ht_operation_mode);
1575 }
1576
1577 if (changed & BSS_CHANGED_BASIC_RATES) {
1578 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1579 (unsigned long long) info->basic_rates);
1580 }
1581
1582 if (changed & BSS_CHANGED_TXPOWER)
1583 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1584 }
1585
1586 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1587 struct ieee80211_vif *vif,
1588 struct ieee80211_sta *sta)
1589 {
1590 hwsim_check_magic(vif);
1591 hwsim_set_sta_magic(sta);
1592
1593 return 0;
1594 }
1595
1596 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1597 struct ieee80211_vif *vif,
1598 struct ieee80211_sta *sta)
1599 {
1600 hwsim_check_magic(vif);
1601 hwsim_clear_sta_magic(sta);
1602
1603 return 0;
1604 }
1605
1606 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1607 struct ieee80211_vif *vif,
1608 enum sta_notify_cmd cmd,
1609 struct ieee80211_sta *sta)
1610 {
1611 hwsim_check_magic(vif);
1612
1613 switch (cmd) {
1614 case STA_NOTIFY_SLEEP:
1615 case STA_NOTIFY_AWAKE:
1616 /* TODO: make good use of these flags */
1617 break;
1618 default:
1619 WARN(1, "Invalid sta notify: %d\n", cmd);
1620 break;
1621 }
1622 }
1623
1624 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1625 struct ieee80211_sta *sta,
1626 bool set)
1627 {
1628 hwsim_check_sta_magic(sta);
1629 return 0;
1630 }
1631
1632 static int mac80211_hwsim_conf_tx(
1633 struct ieee80211_hw *hw,
1634 struct ieee80211_vif *vif, u16 queue,
1635 const struct ieee80211_tx_queue_params *params)
1636 {
1637 wiphy_debug(hw->wiphy,
1638 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1639 __func__, queue,
1640 params->txop, params->cw_min,
1641 params->cw_max, params->aifs);
1642 return 0;
1643 }
1644
1645 static int mac80211_hwsim_get_survey(
1646 struct ieee80211_hw *hw, int idx,
1647 struct survey_info *survey)
1648 {
1649 struct ieee80211_conf *conf = &hw->conf;
1650
1651 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1652
1653 if (idx != 0)
1654 return -ENOENT;
1655
1656 /* Current channel */
1657 survey->channel = conf->chandef.chan;
1658
1659 /*
1660 * Magically conjured noise level --- this is only ok for simulated hardware.
1661 *
1662 * A real driver which cannot determine the real channel noise MUST NOT
1663 * report any noise, especially not a magically conjured one :-)
1664 */
1665 survey->filled = SURVEY_INFO_NOISE_DBM;
1666 survey->noise = -92;
1667
1668 return 0;
1669 }
1670
1671 #ifdef CONFIG_NL80211_TESTMODE
1672 /*
1673 * This section contains example code for using netlink
1674 * attributes with the testmode command in nl80211.
1675 */
1676
1677 /* These enums need to be kept in sync with userspace */
1678 enum hwsim_testmode_attr {
1679 __HWSIM_TM_ATTR_INVALID = 0,
1680 HWSIM_TM_ATTR_CMD = 1,
1681 HWSIM_TM_ATTR_PS = 2,
1682
1683 /* keep last */
1684 __HWSIM_TM_ATTR_AFTER_LAST,
1685 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1686 };
1687
1688 enum hwsim_testmode_cmd {
1689 HWSIM_TM_CMD_SET_PS = 0,
1690 HWSIM_TM_CMD_GET_PS = 1,
1691 HWSIM_TM_CMD_STOP_QUEUES = 2,
1692 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1693 };
1694
1695 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1696 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1697 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1698 };
1699
1700 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1701 struct ieee80211_vif *vif,
1702 void *data, int len)
1703 {
1704 struct mac80211_hwsim_data *hwsim = hw->priv;
1705 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1706 struct sk_buff *skb;
1707 int err, ps;
1708
1709 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1710 hwsim_testmode_policy);
1711 if (err)
1712 return err;
1713
1714 if (!tb[HWSIM_TM_ATTR_CMD])
1715 return -EINVAL;
1716
1717 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1718 case HWSIM_TM_CMD_SET_PS:
1719 if (!tb[HWSIM_TM_ATTR_PS])
1720 return -EINVAL;
1721 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1722 return hwsim_fops_ps_write(hwsim, ps);
1723 case HWSIM_TM_CMD_GET_PS:
1724 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1725 nla_total_size(sizeof(u32)));
1726 if (!skb)
1727 return -ENOMEM;
1728 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1729 goto nla_put_failure;
1730 return cfg80211_testmode_reply(skb);
1731 case HWSIM_TM_CMD_STOP_QUEUES:
1732 ieee80211_stop_queues(hw);
1733 return 0;
1734 case HWSIM_TM_CMD_WAKE_QUEUES:
1735 ieee80211_wake_queues(hw);
1736 return 0;
1737 default:
1738 return -EOPNOTSUPP;
1739 }
1740
1741 nla_put_failure:
1742 kfree_skb(skb);
1743 return -ENOBUFS;
1744 }
1745 #endif
1746
1747 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1748 struct ieee80211_vif *vif,
1749 enum ieee80211_ampdu_mlme_action action,
1750 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1751 u8 buf_size)
1752 {
1753 switch (action) {
1754 case IEEE80211_AMPDU_TX_START:
1755 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1756 break;
1757 case IEEE80211_AMPDU_TX_STOP_CONT:
1758 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1759 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1760 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1761 break;
1762 case IEEE80211_AMPDU_TX_OPERATIONAL:
1763 break;
1764 case IEEE80211_AMPDU_RX_START:
1765 case IEEE80211_AMPDU_RX_STOP:
1766 break;
1767 default:
1768 return -EOPNOTSUPP;
1769 }
1770
1771 return 0;
1772 }
1773
1774 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1775 struct ieee80211_vif *vif,
1776 u32 queues, bool drop)
1777 {
1778 /* Not implemented, queues only on kernel side */
1779 }
1780
1781 static void hw_scan_work(struct work_struct *work)
1782 {
1783 struct mac80211_hwsim_data *hwsim =
1784 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1785 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1786 int dwell, i;
1787
1788 mutex_lock(&hwsim->mutex);
1789 if (hwsim->scan_chan_idx >= req->n_channels) {
1790 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1791 ieee80211_scan_completed(hwsim->hw, false);
1792 hwsim->hw_scan_request = NULL;
1793 hwsim->hw_scan_vif = NULL;
1794 hwsim->tmp_chan = NULL;
1795 mutex_unlock(&hwsim->mutex);
1796 return;
1797 }
1798
1799 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1800 req->channels[hwsim->scan_chan_idx]->center_freq);
1801
1802 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1803 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1804 !req->n_ssids) {
1805 dwell = 120;
1806 } else {
1807 dwell = 30;
1808 /* send probes */
1809 for (i = 0; i < req->n_ssids; i++) {
1810 struct sk_buff *probe;
1811
1812 probe = ieee80211_probereq_get(hwsim->hw,
1813 hwsim->scan_addr,
1814 req->ssids[i].ssid,
1815 req->ssids[i].ssid_len,
1816 req->ie_len);
1817 if (!probe)
1818 continue;
1819
1820 if (req->ie_len)
1821 memcpy(skb_put(probe, req->ie_len), req->ie,
1822 req->ie_len);
1823
1824 local_bh_disable();
1825 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1826 hwsim->tmp_chan);
1827 local_bh_enable();
1828 }
1829 }
1830 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1831 msecs_to_jiffies(dwell));
1832 hwsim->scan_chan_idx++;
1833 mutex_unlock(&hwsim->mutex);
1834 }
1835
1836 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1837 struct ieee80211_vif *vif,
1838 struct ieee80211_scan_request *hw_req)
1839 {
1840 struct mac80211_hwsim_data *hwsim = hw->priv;
1841 struct cfg80211_scan_request *req = &hw_req->req;
1842
1843 mutex_lock(&hwsim->mutex);
1844 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1845 mutex_unlock(&hwsim->mutex);
1846 return -EBUSY;
1847 }
1848 hwsim->hw_scan_request = req;
1849 hwsim->hw_scan_vif = vif;
1850 hwsim->scan_chan_idx = 0;
1851 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1852 get_random_mask_addr(hwsim->scan_addr,
1853 hw_req->req.mac_addr,
1854 hw_req->req.mac_addr_mask);
1855 else
1856 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1857 mutex_unlock(&hwsim->mutex);
1858
1859 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1860
1861 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1862
1863 return 0;
1864 }
1865
1866 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1867 struct ieee80211_vif *vif)
1868 {
1869 struct mac80211_hwsim_data *hwsim = hw->priv;
1870
1871 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1872
1873 cancel_delayed_work_sync(&hwsim->hw_scan);
1874
1875 mutex_lock(&hwsim->mutex);
1876 ieee80211_scan_completed(hwsim->hw, true);
1877 hwsim->tmp_chan = NULL;
1878 hwsim->hw_scan_request = NULL;
1879 hwsim->hw_scan_vif = NULL;
1880 mutex_unlock(&hwsim->mutex);
1881 }
1882
1883 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1884 struct ieee80211_vif *vif,
1885 const u8 *mac_addr)
1886 {
1887 struct mac80211_hwsim_data *hwsim = hw->priv;
1888
1889 mutex_lock(&hwsim->mutex);
1890
1891 if (hwsim->scanning) {
1892 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1893 goto out;
1894 }
1895
1896 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1897
1898 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1899 hwsim->scanning = true;
1900
1901 out:
1902 mutex_unlock(&hwsim->mutex);
1903 }
1904
1905 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
1906 struct ieee80211_vif *vif)
1907 {
1908 struct mac80211_hwsim_data *hwsim = hw->priv;
1909
1910 mutex_lock(&hwsim->mutex);
1911
1912 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1913 hwsim->scanning = false;
1914 memset(hwsim->scan_addr, 0, ETH_ALEN);
1915
1916 mutex_unlock(&hwsim->mutex);
1917 }
1918
1919 static void hw_roc_done(struct work_struct *work)
1920 {
1921 struct mac80211_hwsim_data *hwsim =
1922 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1923
1924 mutex_lock(&hwsim->mutex);
1925 ieee80211_remain_on_channel_expired(hwsim->hw);
1926 hwsim->tmp_chan = NULL;
1927 mutex_unlock(&hwsim->mutex);
1928
1929 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1930 }
1931
1932 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1933 struct ieee80211_vif *vif,
1934 struct ieee80211_channel *chan,
1935 int duration,
1936 enum ieee80211_roc_type type)
1937 {
1938 struct mac80211_hwsim_data *hwsim = hw->priv;
1939
1940 mutex_lock(&hwsim->mutex);
1941 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1942 mutex_unlock(&hwsim->mutex);
1943 return -EBUSY;
1944 }
1945
1946 hwsim->tmp_chan = chan;
1947 mutex_unlock(&hwsim->mutex);
1948
1949 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1950 chan->center_freq, duration);
1951
1952 ieee80211_ready_on_channel(hw);
1953
1954 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1955 msecs_to_jiffies(duration));
1956 return 0;
1957 }
1958
1959 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1960 {
1961 struct mac80211_hwsim_data *hwsim = hw->priv;
1962
1963 cancel_delayed_work_sync(&hwsim->roc_done);
1964
1965 mutex_lock(&hwsim->mutex);
1966 hwsim->tmp_chan = NULL;
1967 mutex_unlock(&hwsim->mutex);
1968
1969 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1970
1971 return 0;
1972 }
1973
1974 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1975 struct ieee80211_chanctx_conf *ctx)
1976 {
1977 hwsim_set_chanctx_magic(ctx);
1978 wiphy_debug(hw->wiphy,
1979 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1980 ctx->def.chan->center_freq, ctx->def.width,
1981 ctx->def.center_freq1, ctx->def.center_freq2);
1982 return 0;
1983 }
1984
1985 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1986 struct ieee80211_chanctx_conf *ctx)
1987 {
1988 wiphy_debug(hw->wiphy,
1989 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1990 ctx->def.chan->center_freq, ctx->def.width,
1991 ctx->def.center_freq1, ctx->def.center_freq2);
1992 hwsim_check_chanctx_magic(ctx);
1993 hwsim_clear_chanctx_magic(ctx);
1994 }
1995
1996 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1997 struct ieee80211_chanctx_conf *ctx,
1998 u32 changed)
1999 {
2000 hwsim_check_chanctx_magic(ctx);
2001 wiphy_debug(hw->wiphy,
2002 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2003 ctx->def.chan->center_freq, ctx->def.width,
2004 ctx->def.center_freq1, ctx->def.center_freq2);
2005 }
2006
2007 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2008 struct ieee80211_vif *vif,
2009 struct ieee80211_chanctx_conf *ctx)
2010 {
2011 hwsim_check_magic(vif);
2012 hwsim_check_chanctx_magic(ctx);
2013
2014 return 0;
2015 }
2016
2017 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2018 struct ieee80211_vif *vif,
2019 struct ieee80211_chanctx_conf *ctx)
2020 {
2021 hwsim_check_magic(vif);
2022 hwsim_check_chanctx_magic(ctx);
2023 }
2024
2025 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2026 "tx_pkts_nic",
2027 "tx_bytes_nic",
2028 "rx_pkts_nic",
2029 "rx_bytes_nic",
2030 "d_tx_dropped",
2031 "d_tx_failed",
2032 "d_ps_mode",
2033 "d_group",
2034 "d_tx_power",
2035 };
2036
2037 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2038
2039 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2040 struct ieee80211_vif *vif,
2041 u32 sset, u8 *data)
2042 {
2043 if (sset == ETH_SS_STATS)
2044 memcpy(data, *mac80211_hwsim_gstrings_stats,
2045 sizeof(mac80211_hwsim_gstrings_stats));
2046 }
2047
2048 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2049 struct ieee80211_vif *vif, int sset)
2050 {
2051 if (sset == ETH_SS_STATS)
2052 return MAC80211_HWSIM_SSTATS_LEN;
2053 return 0;
2054 }
2055
2056 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2057 struct ieee80211_vif *vif,
2058 struct ethtool_stats *stats, u64 *data)
2059 {
2060 struct mac80211_hwsim_data *ar = hw->priv;
2061 int i = 0;
2062
2063 data[i++] = ar->tx_pkts;
2064 data[i++] = ar->tx_bytes;
2065 data[i++] = ar->rx_pkts;
2066 data[i++] = ar->rx_bytes;
2067 data[i++] = ar->tx_dropped;
2068 data[i++] = ar->tx_failed;
2069 data[i++] = ar->ps;
2070 data[i++] = ar->group;
2071 data[i++] = ar->power_level;
2072
2073 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2074 }
2075
2076 static const struct ieee80211_ops mac80211_hwsim_ops = {
2077 .tx = mac80211_hwsim_tx,
2078 .start = mac80211_hwsim_start,
2079 .stop = mac80211_hwsim_stop,
2080 .add_interface = mac80211_hwsim_add_interface,
2081 .change_interface = mac80211_hwsim_change_interface,
2082 .remove_interface = mac80211_hwsim_remove_interface,
2083 .config = mac80211_hwsim_config,
2084 .configure_filter = mac80211_hwsim_configure_filter,
2085 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2086 .sta_add = mac80211_hwsim_sta_add,
2087 .sta_remove = mac80211_hwsim_sta_remove,
2088 .sta_notify = mac80211_hwsim_sta_notify,
2089 .set_tim = mac80211_hwsim_set_tim,
2090 .conf_tx = mac80211_hwsim_conf_tx,
2091 .get_survey = mac80211_hwsim_get_survey,
2092 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2093 .ampdu_action = mac80211_hwsim_ampdu_action,
2094 .sw_scan_start = mac80211_hwsim_sw_scan,
2095 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2096 .flush = mac80211_hwsim_flush,
2097 .get_tsf = mac80211_hwsim_get_tsf,
2098 .set_tsf = mac80211_hwsim_set_tsf,
2099 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2100 .get_et_stats = mac80211_hwsim_get_et_stats,
2101 .get_et_strings = mac80211_hwsim_get_et_strings,
2102 };
2103
2104 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2105
2106 struct hwsim_new_radio_params {
2107 unsigned int channels;
2108 const char *reg_alpha2;
2109 const struct ieee80211_regdomain *regd;
2110 bool reg_strict;
2111 bool p2p_device;
2112 bool use_chanctx;
2113 bool destroy_on_close;
2114 const char *hwname;
2115 bool no_vif;
2116 };
2117
2118 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2119 struct genl_info *info)
2120 {
2121 if (info)
2122 genl_notify(&hwsim_genl_family, mcast_skb,
2123 genl_info_net(info), info->snd_portid,
2124 HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
2125 else
2126 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2127 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2128 }
2129
2130 static int append_radio_msg(struct sk_buff *skb, int id,
2131 struct hwsim_new_radio_params *param)
2132 {
2133 int ret;
2134
2135 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2136 if (ret < 0)
2137 return ret;
2138
2139 if (param->channels) {
2140 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2141 if (ret < 0)
2142 return ret;
2143 }
2144
2145 if (param->reg_alpha2) {
2146 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2147 param->reg_alpha2);
2148 if (ret < 0)
2149 return ret;
2150 }
2151
2152 if (param->regd) {
2153 int i;
2154
2155 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2156 if (hwsim_world_regdom_custom[i] != param->regd)
2157 continue;
2158
2159 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2160 if (ret < 0)
2161 return ret;
2162 break;
2163 }
2164 }
2165
2166 if (param->reg_strict) {
2167 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2168 if (ret < 0)
2169 return ret;
2170 }
2171
2172 if (param->p2p_device) {
2173 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2174 if (ret < 0)
2175 return ret;
2176 }
2177
2178 if (param->use_chanctx) {
2179 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2180 if (ret < 0)
2181 return ret;
2182 }
2183
2184 if (param->hwname) {
2185 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2186 strlen(param->hwname), param->hwname);
2187 if (ret < 0)
2188 return ret;
2189 }
2190
2191 return 0;
2192 }
2193
2194 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2195 struct hwsim_new_radio_params *param)
2196 {
2197 struct sk_buff *mcast_skb;
2198 void *data;
2199
2200 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2201 if (!mcast_skb)
2202 return;
2203
2204 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2205 HWSIM_CMD_NEW_RADIO);
2206 if (!data)
2207 goto out_err;
2208
2209 if (append_radio_msg(mcast_skb, id, param) < 0)
2210 goto out_err;
2211
2212 genlmsg_end(mcast_skb, data);
2213
2214 hwsim_mcast_config_msg(mcast_skb, info);
2215 return;
2216
2217 out_err:
2218 genlmsg_cancel(mcast_skb, data);
2219 nlmsg_free(mcast_skb);
2220 }
2221
2222 static int mac80211_hwsim_new_radio(struct genl_info *info,
2223 struct hwsim_new_radio_params *param)
2224 {
2225 int err;
2226 u8 addr[ETH_ALEN];
2227 struct mac80211_hwsim_data *data;
2228 struct ieee80211_hw *hw;
2229 enum ieee80211_band band;
2230 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2231 int idx;
2232
2233 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2234 return -EINVAL;
2235
2236 spin_lock_bh(&hwsim_radio_lock);
2237 idx = hwsim_radio_idx++;
2238 spin_unlock_bh(&hwsim_radio_lock);
2239
2240 if (param->use_chanctx)
2241 ops = &mac80211_hwsim_mchan_ops;
2242 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2243 if (!hw) {
2244 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2245 err = -ENOMEM;
2246 goto failed;
2247 }
2248 data = hw->priv;
2249 data->hw = hw;
2250
2251 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2252 if (IS_ERR(data->dev)) {
2253 printk(KERN_DEBUG
2254 "mac80211_hwsim: device_create failed (%ld)\n",
2255 PTR_ERR(data->dev));
2256 err = -ENOMEM;
2257 goto failed_drvdata;
2258 }
2259 data->dev->driver = &mac80211_hwsim_driver.driver;
2260 err = device_bind_driver(data->dev);
2261 if (err != 0) {
2262 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2263 err);
2264 goto failed_bind;
2265 }
2266
2267 skb_queue_head_init(&data->pending);
2268
2269 SET_IEEE80211_DEV(hw, data->dev);
2270 memset(addr, 0, ETH_ALEN);
2271 addr[0] = 0x02;
2272 addr[3] = idx >> 8;
2273 addr[4] = idx;
2274 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2275 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2276 data->addresses[1].addr[0] |= 0x40;
2277 hw->wiphy->n_addresses = 2;
2278 hw->wiphy->addresses = data->addresses;
2279
2280 data->channels = param->channels;
2281 data->use_chanctx = param->use_chanctx;
2282 data->idx = idx;
2283 data->destroy_on_close = param->destroy_on_close;
2284 if (info)
2285 data->portid = info->snd_portid;
2286
2287 if (data->use_chanctx) {
2288 hw->wiphy->max_scan_ssids = 255;
2289 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2290 hw->wiphy->max_remain_on_channel_duration = 1000;
2291 /* For channels > 1 DFS is not allowed */
2292 hw->wiphy->n_iface_combinations = 1;
2293 hw->wiphy->iface_combinations = &data->if_combination;
2294 if (param->p2p_device)
2295 data->if_combination = hwsim_if_comb_p2p_dev[0];
2296 else
2297 data->if_combination = hwsim_if_comb[0];
2298 data->if_combination.num_different_channels = data->channels;
2299 } else if (param->p2p_device) {
2300 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2301 hw->wiphy->n_iface_combinations =
2302 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2303 } else {
2304 hw->wiphy->iface_combinations = hwsim_if_comb;
2305 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2306 }
2307
2308 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2309 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2310
2311 hw->queues = 5;
2312 hw->offchannel_tx_hw_queue = 4;
2313 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2314 BIT(NL80211_IFTYPE_AP) |
2315 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2316 BIT(NL80211_IFTYPE_P2P_GO) |
2317 BIT(NL80211_IFTYPE_ADHOC) |
2318 BIT(NL80211_IFTYPE_MESH_POINT);
2319
2320 if (param->p2p_device)
2321 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2322
2323 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2324 IEEE80211_HW_SIGNAL_DBM |
2325 IEEE80211_HW_AMPDU_AGGREGATION |
2326 IEEE80211_HW_WANT_MONITOR_VIF |
2327 IEEE80211_HW_QUEUE_CONTROL |
2328 IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2329 IEEE80211_HW_CHANCTX_STA_CSA;
2330 if (rctbl)
2331 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2332
2333 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2334 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2335 WIPHY_FLAG_AP_UAPSD |
2336 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2337 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2338 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2339 NL80211_FEATURE_STATIC_SMPS |
2340 NL80211_FEATURE_DYNAMIC_SMPS |
2341 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2342
2343 /* ask mac80211 to reserve space for magic */
2344 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2345 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2346 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2347
2348 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2349 sizeof(hwsim_channels_2ghz));
2350 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2351 sizeof(hwsim_channels_5ghz));
2352 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2353
2354 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2355 struct ieee80211_supported_band *sband = &data->bands[band];
2356 switch (band) {
2357 case IEEE80211_BAND_2GHZ:
2358 sband->channels = data->channels_2ghz;
2359 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2360 sband->bitrates = data->rates;
2361 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2362 break;
2363 case IEEE80211_BAND_5GHZ:
2364 sband->channels = data->channels_5ghz;
2365 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2366 sband->bitrates = data->rates + 4;
2367 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2368 break;
2369 default:
2370 continue;
2371 }
2372
2373 sband->ht_cap.ht_supported = true;
2374 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2375 IEEE80211_HT_CAP_GRN_FLD |
2376 IEEE80211_HT_CAP_SGI_20 |
2377 IEEE80211_HT_CAP_SGI_40 |
2378 IEEE80211_HT_CAP_DSSSCCK40;
2379 sband->ht_cap.ampdu_factor = 0x3;
2380 sband->ht_cap.ampdu_density = 0x6;
2381 memset(&sband->ht_cap.mcs, 0,
2382 sizeof(sband->ht_cap.mcs));
2383 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2384 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2385 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2386
2387 hw->wiphy->bands[band] = sband;
2388
2389 sband->vht_cap.vht_supported = true;
2390 sband->vht_cap.cap =
2391 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2392 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2393 IEEE80211_VHT_CAP_RXLDPC |
2394 IEEE80211_VHT_CAP_SHORT_GI_80 |
2395 IEEE80211_VHT_CAP_SHORT_GI_160 |
2396 IEEE80211_VHT_CAP_TXSTBC |
2397 IEEE80211_VHT_CAP_RXSTBC_1 |
2398 IEEE80211_VHT_CAP_RXSTBC_2 |
2399 IEEE80211_VHT_CAP_RXSTBC_3 |
2400 IEEE80211_VHT_CAP_RXSTBC_4 |
2401 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2402 sband->vht_cap.vht_mcs.rx_mcs_map =
2403 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2404 IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2405 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2406 IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2407 IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2408 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2409 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2410 IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2411 sband->vht_cap.vht_mcs.tx_mcs_map =
2412 sband->vht_cap.vht_mcs.rx_mcs_map;
2413 }
2414
2415 /* By default all radios belong to the first group */
2416 data->group = 1;
2417 mutex_init(&data->mutex);
2418
2419 /* Enable frame retransmissions for lossy channels */
2420 hw->max_rates = 4;
2421 hw->max_rate_tries = 11;
2422
2423 if (param->reg_strict)
2424 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2425 if (param->regd) {
2426 data->regd = param->regd;
2427 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2428 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2429 /* give the regulatory workqueue a chance to run */
2430 schedule_timeout_interruptible(1);
2431 }
2432
2433 if (param->no_vif)
2434 hw->flags |= IEEE80211_HW_NO_AUTO_VIF;
2435
2436 err = ieee80211_register_hw(hw);
2437 if (err < 0) {
2438 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2439 err);
2440 goto failed_hw;
2441 }
2442
2443 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2444
2445 if (param->reg_alpha2) {
2446 data->alpha2[0] = param->reg_alpha2[0];
2447 data->alpha2[1] = param->reg_alpha2[1];
2448 regulatory_hint(hw->wiphy, param->reg_alpha2);
2449 }
2450
2451 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2452 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2453 debugfs_create_file("group", 0666, data->debugfs, data,
2454 &hwsim_fops_group);
2455 if (!data->use_chanctx)
2456 debugfs_create_file("dfs_simulate_radar", 0222,
2457 data->debugfs,
2458 data, &hwsim_simulate_radar);
2459
2460 tasklet_hrtimer_init(&data->beacon_timer,
2461 mac80211_hwsim_beacon,
2462 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2463
2464 spin_lock_bh(&hwsim_radio_lock);
2465 list_add_tail(&data->list, &hwsim_radios);
2466 spin_unlock_bh(&hwsim_radio_lock);
2467
2468 if (idx > 0)
2469 hwsim_mcast_new_radio(idx, info, param);
2470
2471 return idx;
2472
2473 failed_hw:
2474 device_release_driver(data->dev);
2475 failed_bind:
2476 device_unregister(data->dev);
2477 failed_drvdata:
2478 ieee80211_free_hw(hw);
2479 failed:
2480 return err;
2481 }
2482
2483 static void hwsim_mcast_del_radio(int id, const char *hwname,
2484 struct genl_info *info)
2485 {
2486 struct sk_buff *skb;
2487 void *data;
2488 int ret;
2489
2490 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2491 if (!skb)
2492 return;
2493
2494 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2495 HWSIM_CMD_DEL_RADIO);
2496 if (!data)
2497 goto error;
2498
2499 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2500 if (ret < 0)
2501 goto error;
2502
2503 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2504 hwname);
2505 if (ret < 0)
2506 goto error;
2507
2508 genlmsg_end(skb, data);
2509
2510 hwsim_mcast_config_msg(skb, info);
2511
2512 return;
2513
2514 error:
2515 nlmsg_free(skb);
2516 }
2517
2518 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2519 const char *hwname,
2520 struct genl_info *info)
2521 {
2522 hwsim_mcast_del_radio(data->idx, hwname, info);
2523 debugfs_remove_recursive(data->debugfs);
2524 ieee80211_unregister_hw(data->hw);
2525 device_release_driver(data->dev);
2526 device_unregister(data->dev);
2527 ieee80211_free_hw(data->hw);
2528 }
2529
2530 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2531 struct mac80211_hwsim_data *data,
2532 u32 portid, u32 seq,
2533 struct netlink_callback *cb, int flags)
2534 {
2535 void *hdr;
2536 struct hwsim_new_radio_params param = { };
2537 int res = -EMSGSIZE;
2538
2539 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2540 HWSIM_CMD_GET_RADIO);
2541 if (!hdr)
2542 return -EMSGSIZE;
2543
2544 if (cb)
2545 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2546
2547 if (data->alpha2[0] && data->alpha2[1])
2548 param.reg_alpha2 = data->alpha2;
2549
2550 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2551 REGULATORY_STRICT_REG);
2552 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2553 BIT(NL80211_IFTYPE_P2P_DEVICE));
2554 param.use_chanctx = data->use_chanctx;
2555 param.regd = data->regd;
2556 param.channels = data->channels;
2557 param.hwname = wiphy_name(data->hw->wiphy);
2558
2559 res = append_radio_msg(skb, data->idx, &param);
2560 if (res < 0)
2561 goto out_err;
2562
2563 genlmsg_end(skb, hdr);
2564 return 0;
2565
2566 out_err:
2567 genlmsg_cancel(skb, hdr);
2568 return res;
2569 }
2570
2571 static void mac80211_hwsim_free(void)
2572 {
2573 struct mac80211_hwsim_data *data;
2574
2575 spin_lock_bh(&hwsim_radio_lock);
2576 while ((data = list_first_entry_or_null(&hwsim_radios,
2577 struct mac80211_hwsim_data,
2578 list))) {
2579 list_del(&data->list);
2580 spin_unlock_bh(&hwsim_radio_lock);
2581 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2582 NULL);
2583 spin_lock_bh(&hwsim_radio_lock);
2584 }
2585 spin_unlock_bh(&hwsim_radio_lock);
2586 class_destroy(hwsim_class);
2587 }
2588
2589 static const struct net_device_ops hwsim_netdev_ops = {
2590 .ndo_start_xmit = hwsim_mon_xmit,
2591 .ndo_change_mtu = eth_change_mtu,
2592 .ndo_set_mac_address = eth_mac_addr,
2593 .ndo_validate_addr = eth_validate_addr,
2594 };
2595
2596 static void hwsim_mon_setup(struct net_device *dev)
2597 {
2598 dev->netdev_ops = &hwsim_netdev_ops;
2599 dev->destructor = free_netdev;
2600 ether_setup(dev);
2601 dev->tx_queue_len = 0;
2602 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2603 memset(dev->dev_addr, 0, ETH_ALEN);
2604 dev->dev_addr[0] = 0x12;
2605 }
2606
2607 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2608 {
2609 struct mac80211_hwsim_data *data;
2610 bool _found = false;
2611
2612 spin_lock_bh(&hwsim_radio_lock);
2613 list_for_each_entry(data, &hwsim_radios, list) {
2614 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2615 _found = true;
2616 break;
2617 }
2618 }
2619 spin_unlock_bh(&hwsim_radio_lock);
2620
2621 if (!_found)
2622 return NULL;
2623
2624 return data;
2625 }
2626
2627 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2628 struct genl_info *info)
2629 {
2630
2631 struct ieee80211_hdr *hdr;
2632 struct mac80211_hwsim_data *data2;
2633 struct ieee80211_tx_info *txi;
2634 struct hwsim_tx_rate *tx_attempts;
2635 unsigned long ret_skb_ptr;
2636 struct sk_buff *skb, *tmp;
2637 const u8 *src;
2638 unsigned int hwsim_flags;
2639 int i;
2640 bool found = false;
2641
2642 if (info->snd_portid != wmediumd_portid)
2643 return -EINVAL;
2644
2645 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2646 !info->attrs[HWSIM_ATTR_FLAGS] ||
2647 !info->attrs[HWSIM_ATTR_COOKIE] ||
2648 !info->attrs[HWSIM_ATTR_TX_INFO])
2649 goto out;
2650
2651 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2652 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2653 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2654
2655 data2 = get_hwsim_data_ref_from_addr(src);
2656 if (!data2)
2657 goto out;
2658
2659 /* look for the skb matching the cookie passed back from user */
2660 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2661 if ((unsigned long)skb == ret_skb_ptr) {
2662 skb_unlink(skb, &data2->pending);
2663 found = true;
2664 break;
2665 }
2666 }
2667
2668 /* not found */
2669 if (!found)
2670 goto out;
2671
2672 /* Tx info received because the frame was broadcasted on user space,
2673 so we get all the necessary info: tx attempts and skb control buff */
2674
2675 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2676 info->attrs[HWSIM_ATTR_TX_INFO]);
2677
2678 /* now send back TX status */
2679 txi = IEEE80211_SKB_CB(skb);
2680
2681 ieee80211_tx_info_clear_status(txi);
2682
2683 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2684 txi->status.rates[i].idx = tx_attempts[i].idx;
2685 txi->status.rates[i].count = tx_attempts[i].count;
2686 /*txi->status.rates[i].flags = 0;*/
2687 }
2688
2689 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2690
2691 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2692 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2693 if (skb->len >= 16) {
2694 hdr = (struct ieee80211_hdr *) skb->data;
2695 mac80211_hwsim_monitor_ack(data2->channel,
2696 hdr->addr2);
2697 }
2698 txi->flags |= IEEE80211_TX_STAT_ACK;
2699 }
2700 ieee80211_tx_status_irqsafe(data2->hw, skb);
2701 return 0;
2702 out:
2703 return -EINVAL;
2704
2705 }
2706
2707 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2708 struct genl_info *info)
2709 {
2710 struct mac80211_hwsim_data *data2;
2711 struct ieee80211_rx_status rx_status;
2712 const u8 *dst;
2713 int frame_data_len;
2714 void *frame_data;
2715 struct sk_buff *skb = NULL;
2716
2717 if (info->snd_portid != wmediumd_portid)
2718 return -EINVAL;
2719
2720 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2721 !info->attrs[HWSIM_ATTR_FRAME] ||
2722 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2723 !info->attrs[HWSIM_ATTR_SIGNAL])
2724 goto out;
2725
2726 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2727 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2728 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2729
2730 /* Allocate new skb here */
2731 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2732 if (skb == NULL)
2733 goto err;
2734
2735 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2736 goto err;
2737
2738 /* Copy the data */
2739 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2740
2741 data2 = get_hwsim_data_ref_from_addr(dst);
2742 if (!data2)
2743 goto out;
2744
2745 /* check if radio is configured properly */
2746
2747 if (data2->idle || !data2->started)
2748 goto out;
2749
2750 /* A frame is received from user space */
2751 memset(&rx_status, 0, sizeof(rx_status));
2752 /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2753 * packets?
2754 */
2755 rx_status.freq = data2->channel->center_freq;
2756 rx_status.band = data2->channel->band;
2757 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2758 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2759
2760 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2761 data2->rx_pkts++;
2762 data2->rx_bytes += skb->len;
2763 ieee80211_rx_irqsafe(data2->hw, skb);
2764
2765 return 0;
2766 err:
2767 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2768 out:
2769 dev_kfree_skb(skb);
2770 return -EINVAL;
2771 }
2772
2773 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2774 struct genl_info *info)
2775 {
2776 struct mac80211_hwsim_data *data;
2777 int chans = 1;
2778
2779 spin_lock_bh(&hwsim_radio_lock);
2780 list_for_each_entry(data, &hwsim_radios, list)
2781 chans = max(chans, data->channels);
2782 spin_unlock_bh(&hwsim_radio_lock);
2783
2784 /* In the future we should revise the userspace API and allow it
2785 * to set a flag that it does support multi-channel, then we can
2786 * let this pass conditionally on the flag.
2787 * For current userspace, prohibit it since it won't work right.
2788 */
2789 if (chans > 1)
2790 return -EOPNOTSUPP;
2791
2792 if (wmediumd_portid)
2793 return -EBUSY;
2794
2795 wmediumd_portid = info->snd_portid;
2796
2797 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2798 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2799
2800 return 0;
2801 }
2802
2803 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2804 {
2805 struct hwsim_new_radio_params param = { 0 };
2806
2807 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2808 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2809 param.channels = channels;
2810 param.destroy_on_close =
2811 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2812
2813 if (info->attrs[HWSIM_ATTR_CHANNELS])
2814 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2815
2816 if (info->attrs[HWSIM_ATTR_NO_VIF])
2817 param.no_vif = true;
2818
2819 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2820 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2821
2822 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2823 param.use_chanctx = true;
2824 else
2825 param.use_chanctx = (param.channels > 1);
2826
2827 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2828 param.reg_alpha2 =
2829 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2830
2831 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2832 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2833
2834 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2835 return -EINVAL;
2836 param.regd = hwsim_world_regdom_custom[idx];
2837 }
2838
2839 return mac80211_hwsim_new_radio(info, &param);
2840 }
2841
2842 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2843 {
2844 struct mac80211_hwsim_data *data;
2845 s64 idx = -1;
2846 const char *hwname = NULL;
2847
2848 if (info->attrs[HWSIM_ATTR_RADIO_ID])
2849 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2850 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2851 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2852 else
2853 return -EINVAL;
2854
2855 spin_lock_bh(&hwsim_radio_lock);
2856 list_for_each_entry(data, &hwsim_radios, list) {
2857 if (idx >= 0) {
2858 if (data->idx != idx)
2859 continue;
2860 } else {
2861 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
2862 continue;
2863 }
2864
2865 list_del(&data->list);
2866 spin_unlock_bh(&hwsim_radio_lock);
2867 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2868 info);
2869 return 0;
2870 }
2871 spin_unlock_bh(&hwsim_radio_lock);
2872
2873 return -ENODEV;
2874 }
2875
2876 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
2877 {
2878 struct mac80211_hwsim_data *data;
2879 struct sk_buff *skb;
2880 int idx, res = -ENODEV;
2881
2882 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2883 return -EINVAL;
2884 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2885
2886 spin_lock_bh(&hwsim_radio_lock);
2887 list_for_each_entry(data, &hwsim_radios, list) {
2888 if (data->idx != idx)
2889 continue;
2890
2891 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2892 if (!skb) {
2893 res = -ENOMEM;
2894 goto out_err;
2895 }
2896
2897 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
2898 info->snd_seq, NULL, 0);
2899 if (res < 0) {
2900 nlmsg_free(skb);
2901 goto out_err;
2902 }
2903
2904 genlmsg_reply(skb, info);
2905 break;
2906 }
2907
2908 out_err:
2909 spin_unlock_bh(&hwsim_radio_lock);
2910
2911 return res;
2912 }
2913
2914 static int hwsim_dump_radio_nl(struct sk_buff *skb,
2915 struct netlink_callback *cb)
2916 {
2917 int idx = cb->args[0];
2918 struct mac80211_hwsim_data *data = NULL;
2919 int res;
2920
2921 spin_lock_bh(&hwsim_radio_lock);
2922
2923 if (idx == hwsim_radio_idx)
2924 goto done;
2925
2926 list_for_each_entry(data, &hwsim_radios, list) {
2927 if (data->idx < idx)
2928 continue;
2929
2930 res = mac80211_hwsim_get_radio(skb, data,
2931 NETLINK_CB(cb->skb).portid,
2932 cb->nlh->nlmsg_seq, cb,
2933 NLM_F_MULTI);
2934 if (res < 0)
2935 break;
2936
2937 idx = data->idx + 1;
2938 }
2939
2940 cb->args[0] = idx;
2941
2942 done:
2943 spin_unlock_bh(&hwsim_radio_lock);
2944 return skb->len;
2945 }
2946
2947 /* Generic Netlink operations array */
2948 static const struct genl_ops hwsim_ops[] = {
2949 {
2950 .cmd = HWSIM_CMD_REGISTER,
2951 .policy = hwsim_genl_policy,
2952 .doit = hwsim_register_received_nl,
2953 .flags = GENL_ADMIN_PERM,
2954 },
2955 {
2956 .cmd = HWSIM_CMD_FRAME,
2957 .policy = hwsim_genl_policy,
2958 .doit = hwsim_cloned_frame_received_nl,
2959 },
2960 {
2961 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2962 .policy = hwsim_genl_policy,
2963 .doit = hwsim_tx_info_frame_received_nl,
2964 },
2965 {
2966 .cmd = HWSIM_CMD_NEW_RADIO,
2967 .policy = hwsim_genl_policy,
2968 .doit = hwsim_new_radio_nl,
2969 .flags = GENL_ADMIN_PERM,
2970 },
2971 {
2972 .cmd = HWSIM_CMD_DEL_RADIO,
2973 .policy = hwsim_genl_policy,
2974 .doit = hwsim_del_radio_nl,
2975 .flags = GENL_ADMIN_PERM,
2976 },
2977 {
2978 .cmd = HWSIM_CMD_GET_RADIO,
2979 .policy = hwsim_genl_policy,
2980 .doit = hwsim_get_radio_nl,
2981 .dumpit = hwsim_dump_radio_nl,
2982 },
2983 };
2984
2985 static void destroy_radio(struct work_struct *work)
2986 {
2987 struct mac80211_hwsim_data *data =
2988 container_of(work, struct mac80211_hwsim_data, destroy_work);
2989
2990 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
2991 }
2992
2993 static void remove_user_radios(u32 portid)
2994 {
2995 struct mac80211_hwsim_data *entry, *tmp;
2996
2997 spin_lock_bh(&hwsim_radio_lock);
2998 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
2999 if (entry->destroy_on_close && entry->portid == portid) {
3000 list_del(&entry->list);
3001 INIT_WORK(&entry->destroy_work, destroy_radio);
3002 schedule_work(&entry->destroy_work);
3003 }
3004 }
3005 spin_unlock_bh(&hwsim_radio_lock);
3006 }
3007
3008 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3009 unsigned long state,
3010 void *_notify)
3011 {
3012 struct netlink_notify *notify = _notify;
3013
3014 if (state != NETLINK_URELEASE)
3015 return NOTIFY_DONE;
3016
3017 remove_user_radios(notify->portid);
3018
3019 if (notify->portid == wmediumd_portid) {
3020 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3021 " socket, switching to perfect channel medium\n");
3022 wmediumd_portid = 0;
3023 }
3024 return NOTIFY_DONE;
3025
3026 }
3027
3028 static struct notifier_block hwsim_netlink_notifier = {
3029 .notifier_call = mac80211_hwsim_netlink_notify,
3030 };
3031
3032 static int hwsim_init_netlink(void)
3033 {
3034 int rc;
3035
3036 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3037
3038 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3039 hwsim_ops,
3040 hwsim_mcgrps);
3041 if (rc)
3042 goto failure;
3043
3044 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3045 if (rc)
3046 goto failure;
3047
3048 return 0;
3049
3050 failure:
3051 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3052 return -EINVAL;
3053 }
3054
3055 static void hwsim_exit_netlink(void)
3056 {
3057 /* unregister the notifier */
3058 netlink_unregister_notifier(&hwsim_netlink_notifier);
3059 /* unregister the family */
3060 genl_unregister_family(&hwsim_genl_family);
3061 }
3062
3063 static int __init init_mac80211_hwsim(void)
3064 {
3065 int i, err;
3066
3067 if (radios < 0 || radios > 100)
3068 return -EINVAL;
3069
3070 if (channels < 1)
3071 return -EINVAL;
3072
3073 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3074 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3075 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3076 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3077 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3078 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3079 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3080 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3081 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3082 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3083 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3084 mac80211_hwsim_assign_vif_chanctx;
3085 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3086 mac80211_hwsim_unassign_vif_chanctx;
3087
3088 spin_lock_init(&hwsim_radio_lock);
3089 INIT_LIST_HEAD(&hwsim_radios);
3090
3091 err = platform_driver_register(&mac80211_hwsim_driver);
3092 if (err)
3093 return err;
3094
3095 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3096 if (IS_ERR(hwsim_class)) {
3097 err = PTR_ERR(hwsim_class);
3098 goto out_unregister_driver;
3099 }
3100
3101 err = hwsim_init_netlink();
3102 if (err < 0)
3103 goto out_unregister_driver;
3104
3105 for (i = 0; i < radios; i++) {
3106 struct hwsim_new_radio_params param = { 0 };
3107
3108 param.channels = channels;
3109
3110 switch (regtest) {
3111 case HWSIM_REGTEST_DIFF_COUNTRY:
3112 if (i < ARRAY_SIZE(hwsim_alpha2s))
3113 param.reg_alpha2 = hwsim_alpha2s[i];
3114 break;
3115 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3116 if (!i)
3117 param.reg_alpha2 = hwsim_alpha2s[0];
3118 break;
3119 case HWSIM_REGTEST_STRICT_ALL:
3120 param.reg_strict = true;
3121 case HWSIM_REGTEST_DRIVER_REG_ALL:
3122 param.reg_alpha2 = hwsim_alpha2s[0];
3123 break;
3124 case HWSIM_REGTEST_WORLD_ROAM:
3125 if (i == 0)
3126 param.regd = &hwsim_world_regdom_custom_01;
3127 break;
3128 case HWSIM_REGTEST_CUSTOM_WORLD:
3129 param.regd = &hwsim_world_regdom_custom_01;
3130 break;
3131 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3132 if (i == 0)
3133 param.regd = &hwsim_world_regdom_custom_01;
3134 else if (i == 1)
3135 param.regd = &hwsim_world_regdom_custom_02;
3136 break;
3137 case HWSIM_REGTEST_STRICT_FOLLOW:
3138 if (i == 0) {
3139 param.reg_strict = true;
3140 param.reg_alpha2 = hwsim_alpha2s[0];
3141 }
3142 break;
3143 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3144 if (i == 0) {
3145 param.reg_strict = true;
3146 param.reg_alpha2 = hwsim_alpha2s[0];
3147 } else if (i == 1) {
3148 param.reg_alpha2 = hwsim_alpha2s[1];
3149 }
3150 break;
3151 case HWSIM_REGTEST_ALL:
3152 switch (i) {
3153 case 0:
3154 param.regd = &hwsim_world_regdom_custom_01;
3155 break;
3156 case 1:
3157 param.regd = &hwsim_world_regdom_custom_02;
3158 break;
3159 case 2:
3160 param.reg_alpha2 = hwsim_alpha2s[0];
3161 break;
3162 case 3:
3163 param.reg_alpha2 = hwsim_alpha2s[1];
3164 break;
3165 case 4:
3166 param.reg_strict = true;
3167 param.reg_alpha2 = hwsim_alpha2s[2];
3168 break;
3169 }
3170 break;
3171 default:
3172 break;
3173 }
3174
3175 param.p2p_device = support_p2p_device;
3176 param.use_chanctx = channels > 1;
3177
3178 err = mac80211_hwsim_new_radio(NULL, &param);
3179 if (err < 0)
3180 goto out_free_radios;
3181 }
3182
3183 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3184 hwsim_mon_setup);
3185 if (hwsim_mon == NULL) {
3186 err = -ENOMEM;
3187 goto out_free_radios;
3188 }
3189
3190 rtnl_lock();
3191 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3192 if (err < 0) {
3193 rtnl_unlock();
3194 goto out_free_radios;
3195 }
3196
3197 err = register_netdevice(hwsim_mon);
3198 if (err < 0) {
3199 rtnl_unlock();
3200 goto out_free_mon;
3201 }
3202 rtnl_unlock();
3203
3204 return 0;
3205
3206 out_free_mon:
3207 free_netdev(hwsim_mon);
3208 out_free_radios:
3209 mac80211_hwsim_free();
3210 out_unregister_driver:
3211 platform_driver_unregister(&mac80211_hwsim_driver);
3212 return err;
3213 }
3214 module_init(init_mac80211_hwsim);
3215
3216 static void __exit exit_mac80211_hwsim(void)
3217 {
3218 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3219
3220 hwsim_exit_netlink();
3221
3222 mac80211_hwsim_free();
3223 unregister_netdev(hwsim_mon);
3224 platform_driver_unregister(&mac80211_hwsim_driver);
3225 }
3226 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
This page took 0.101225 seconds and 6 git commands to generate.