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Linux 4.4.145
[linux/fpc-iii.git] / drivers / net / wireless / mac80211_hwsim.c
blobe8b770a95f7ae8aa4e218bf75fad7ae3f3d59e34
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 #define OUI_QCA 0x001374
334 #define QCA_NL80211_SUBCMD_TEST 1
335 enum qca_nl80211_vendor_subcmds {
336 QCA_WLAN_VENDOR_ATTR_TEST = 8,
337 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
338 };
339
340 static const struct nla_policy
341 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
342 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
343 };
344
345 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
346 struct wireless_dev *wdev,
347 const void *data, int data_len)
348 {
349 struct sk_buff *skb;
350 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
351 int err;
352 u32 val;
353
354 err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
355 hwsim_vendor_test_policy);
356 if (err)
357 return err;
358 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
359 return -EINVAL;
360 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
361 wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
362
363 /* Send a vendor event as a test. Note that this would not normally be
364 * done within a command handler, but rather, based on some other
365 * trigger. For simplicity, this command is used to trigger the event
366 * here.
367 *
368 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
369 */
370 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
371 if (skb) {
372 /* skb_put() or nla_put() will fill up data within
373 * NL80211_ATTR_VENDOR_DATA.
374 */
375
376 /* Add vendor data */
377 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
378
379 /* Send the event - this will call nla_nest_end() */
380 cfg80211_vendor_event(skb, GFP_KERNEL);
381 }
382
383 /* Send a response to the command */
384 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
385 if (!skb)
386 return -ENOMEM;
387
388 /* skb_put() or nla_put() will fill up data within
389 * NL80211_ATTR_VENDOR_DATA
390 */
391 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
392
393 return cfg80211_vendor_cmd_reply(skb);
394 }
395
396 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
397 {
398 .info = { .vendor_id = OUI_QCA,
399 .subcmd = QCA_NL80211_SUBCMD_TEST },
400 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
401 .doit = mac80211_hwsim_vendor_cmd_test,
402 }
403 };
404
405 /* Advertise support vendor specific events */
406 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
407 { .vendor_id = OUI_QCA, .subcmd = 1 },
408 };
409
410 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
411 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
412 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
413 BIT(NL80211_IFTYPE_P2P_CLIENT) |
414 #ifdef CONFIG_MAC80211_MESH
415 BIT(NL80211_IFTYPE_MESH_POINT) |
416 #endif
417 BIT(NL80211_IFTYPE_AP) |
418 BIT(NL80211_IFTYPE_P2P_GO) },
419 /* must be last, see hwsim_if_comb */
420 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
421 };
422
423 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
424 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
425 };
426
427 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
428 {
429 .limits = hwsim_if_limits,
430 /* remove the last entry which is P2P_DEVICE */
431 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
432 .max_interfaces = 2048,
433 .num_different_channels = 1,
434 },
435 {
436 .limits = hwsim_if_dfs_limits,
437 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
438 .max_interfaces = 8,
439 .num_different_channels = 1,
440 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
441 BIT(NL80211_CHAN_WIDTH_20) |
442 BIT(NL80211_CHAN_WIDTH_40) |
443 BIT(NL80211_CHAN_WIDTH_80) |
444 BIT(NL80211_CHAN_WIDTH_160),
445 }
446 };
447
448 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
449 {
450 .limits = hwsim_if_limits,
451 .n_limits = ARRAY_SIZE(hwsim_if_limits),
452 .max_interfaces = 2048,
453 .num_different_channels = 1,
454 },
455 {
456 .limits = hwsim_if_dfs_limits,
457 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
458 .max_interfaces = 8,
459 .num_different_channels = 1,
460 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
461 BIT(NL80211_CHAN_WIDTH_20) |
462 BIT(NL80211_CHAN_WIDTH_40) |
463 BIT(NL80211_CHAN_WIDTH_80) |
464 BIT(NL80211_CHAN_WIDTH_160),
465 }
466 };
467
468 static spinlock_t hwsim_radio_lock;
469 static struct list_head hwsim_radios;
470 static int hwsim_radio_idx;
471
472 static struct platform_driver mac80211_hwsim_driver = {
473 .driver = {
474 .name = "mac80211_hwsim",
475 },
476 };
477
478 struct mac80211_hwsim_data {
479 struct list_head list;
480 struct ieee80211_hw *hw;
481 struct device *dev;
482 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
483 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
484 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
485 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
486 struct ieee80211_iface_combination if_combination;
487
488 struct mac_address addresses[2];
489 int channels, idx;
490 bool use_chanctx;
491 bool destroy_on_close;
492 struct work_struct destroy_work;
493 u32 portid;
494 char alpha2[2];
495 const struct ieee80211_regdomain *regd;
496
497 struct ieee80211_channel *tmp_chan;
498 struct delayed_work roc_done;
499 struct delayed_work hw_scan;
500 struct cfg80211_scan_request *hw_scan_request;
501 struct ieee80211_vif *hw_scan_vif;
502 int scan_chan_idx;
503 u8 scan_addr[ETH_ALEN];
504
505 struct ieee80211_channel *channel;
506 u64 beacon_int /* beacon interval in us */;
507 unsigned int rx_filter;
508 bool started, idle, scanning;
509 struct mutex mutex;
510 struct tasklet_hrtimer beacon_timer;
511 enum ps_mode {
512 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
513 } ps;
514 bool ps_poll_pending;
515 struct dentry *debugfs;
516
517 struct sk_buff_head pending; /* packets pending */
518 /*
519 * Only radios in the same group can communicate together (the
520 * channel has to match too). Each bit represents a group. A
521 * radio can be in more than one group.
522 */
523 u64 group;
524
525 int power_level;
526
527 /* difference between this hw's clock and the real clock, in usecs */
528 s64 tsf_offset;
529 s64 bcn_delta;
530 /* absolute beacon transmission time. Used to cover up "tx" delay. */
531 u64 abs_bcn_ts;
532
533 /* Stats */
534 u64 tx_pkts;
535 u64 rx_pkts;
536 u64 tx_bytes;
537 u64 rx_bytes;
538 u64 tx_dropped;
539 u64 tx_failed;
540 };
541
542
543 struct hwsim_radiotap_hdr {
544 struct ieee80211_radiotap_header hdr;
545 __le64 rt_tsft;
546 u8 rt_flags;
547 u8 rt_rate;
548 __le16 rt_channel;
549 __le16 rt_chbitmask;
550 } __packed;
551
552 struct hwsim_radiotap_ack_hdr {
553 struct ieee80211_radiotap_header hdr;
554 u8 rt_flags;
555 u8 pad;
556 __le16 rt_channel;
557 __le16 rt_chbitmask;
558 } __packed;
559
560 /* MAC80211_HWSIM netlinf family */
561 static struct genl_family hwsim_genl_family = {
562 .id = GENL_ID_GENERATE,
563 .hdrsize = 0,
564 .name = "MAC80211_HWSIM",
565 .version = 1,
566 .maxattr = HWSIM_ATTR_MAX,
567 };
568
569 enum hwsim_multicast_groups {
570 HWSIM_MCGRP_CONFIG,
571 };
572
573 static const struct genl_multicast_group hwsim_mcgrps[] = {
574 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
575 };
576
577 /* MAC80211_HWSIM netlink policy */
578
579 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
580 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
581 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
582 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
583 .len = IEEE80211_MAX_DATA_LEN },
584 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
585 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
586 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
587 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
588 .len = IEEE80211_TX_MAX_RATES *
589 sizeof(struct hwsim_tx_rate)},
590 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
591 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
592 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
593 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
594 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
595 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
596 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
597 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
598 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
599 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
600 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
601 };
602
603 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
604 struct sk_buff *skb,
605 struct ieee80211_channel *chan);
606
607 /* sysfs attributes */
608 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
609 {
610 struct mac80211_hwsim_data *data = dat;
611 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
612 struct sk_buff *skb;
613 struct ieee80211_pspoll *pspoll;
614
615 if (!vp->assoc)
616 return;
617
618 wiphy_debug(data->hw->wiphy,
619 "%s: send PS-Poll to %pM for aid %d\n",
620 __func__, vp->bssid, vp->aid);
621
622 skb = dev_alloc_skb(sizeof(*pspoll));
623 if (!skb)
624 return;
625 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
626 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
627 IEEE80211_STYPE_PSPOLL |
628 IEEE80211_FCTL_PM);
629 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
630 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
631 memcpy(pspoll->ta, mac, ETH_ALEN);
632
633 rcu_read_lock();
634 mac80211_hwsim_tx_frame(data->hw, skb,
635 rcu_dereference(vif->chanctx_conf)->def.chan);
636 rcu_read_unlock();
637 }
638
639 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
640 struct ieee80211_vif *vif, int ps)
641 {
642 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
643 struct sk_buff *skb;
644 struct ieee80211_hdr *hdr;
645
646 if (!vp->assoc)
647 return;
648
649 wiphy_debug(data->hw->wiphy,
650 "%s: send data::nullfunc to %pM ps=%d\n",
651 __func__, vp->bssid, ps);
652
653 skb = dev_alloc_skb(sizeof(*hdr));
654 if (!skb)
655 return;
656 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
657 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
658 IEEE80211_STYPE_NULLFUNC |
659 (ps ? IEEE80211_FCTL_PM : 0));
660 hdr->duration_id = cpu_to_le16(0);
661 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
662 memcpy(hdr->addr2, mac, ETH_ALEN);
663 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
664
665 rcu_read_lock();
666 mac80211_hwsim_tx_frame(data->hw, skb,
667 rcu_dereference(vif->chanctx_conf)->def.chan);
668 rcu_read_unlock();
669 }
670
671
672 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
673 struct ieee80211_vif *vif)
674 {
675 struct mac80211_hwsim_data *data = dat;
676 hwsim_send_nullfunc(data, mac, vif, 1);
677 }
678
679 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
680 struct ieee80211_vif *vif)
681 {
682 struct mac80211_hwsim_data *data = dat;
683 hwsim_send_nullfunc(data, mac, vif, 0);
684 }
685
686 static int hwsim_fops_ps_read(void *dat, u64 *val)
687 {
688 struct mac80211_hwsim_data *data = dat;
689 *val = data->ps;
690 return 0;
691 }
692
693 static int hwsim_fops_ps_write(void *dat, u64 val)
694 {
695 struct mac80211_hwsim_data *data = dat;
696 enum ps_mode old_ps;
697
698 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
699 val != PS_MANUAL_POLL)
700 return -EINVAL;
701
702 if (val == PS_MANUAL_POLL) {
703 if (data->ps != PS_ENABLED)
704 return -EINVAL;
705 local_bh_disable();
706 ieee80211_iterate_active_interfaces_atomic(
707 data->hw, IEEE80211_IFACE_ITER_NORMAL,
708 hwsim_send_ps_poll, data);
709 local_bh_enable();
710 return 0;
711 }
712 old_ps = data->ps;
713 data->ps = val;
714
715 local_bh_disable();
716 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
717 ieee80211_iterate_active_interfaces_atomic(
718 data->hw, IEEE80211_IFACE_ITER_NORMAL,
719 hwsim_send_nullfunc_ps, data);
720 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
721 ieee80211_iterate_active_interfaces_atomic(
722 data->hw, IEEE80211_IFACE_ITER_NORMAL,
723 hwsim_send_nullfunc_no_ps, data);
724 }
725 local_bh_enable();
726
727 return 0;
728 }
729
730 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
731 "%llu\n");
732
733 static int hwsim_write_simulate_radar(void *dat, u64 val)
734 {
735 struct mac80211_hwsim_data *data = dat;
736
737 ieee80211_radar_detected(data->hw);
738
739 return 0;
740 }
741
742 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
743 hwsim_write_simulate_radar, "%llu\n");
744
745 static int hwsim_fops_group_read(void *dat, u64 *val)
746 {
747 struct mac80211_hwsim_data *data = dat;
748 *val = data->group;
749 return 0;
750 }
751
752 static int hwsim_fops_group_write(void *dat, u64 val)
753 {
754 struct mac80211_hwsim_data *data = dat;
755 data->group = val;
756 return 0;
757 }
758
759 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
760 hwsim_fops_group_read, hwsim_fops_group_write,
761 "%llx\n");
762
763 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
764 struct net_device *dev)
765 {
766 /* TODO: allow packet injection */
767 dev_kfree_skb(skb);
768 return NETDEV_TX_OK;
769 }
770
771 static inline u64 mac80211_hwsim_get_tsf_raw(void)
772 {
773 return ktime_to_us(ktime_get_real());
774 }
775
776 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
777 {
778 u64 now = mac80211_hwsim_get_tsf_raw();
779 return cpu_to_le64(now + data->tsf_offset);
780 }
781
782 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
783 struct ieee80211_vif *vif)
784 {
785 struct mac80211_hwsim_data *data = hw->priv;
786 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
787 }
788
789 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
790 struct ieee80211_vif *vif, u64 tsf)
791 {
792 struct mac80211_hwsim_data *data = hw->priv;
793 u64 now = mac80211_hwsim_get_tsf(hw, vif);
794 u32 bcn_int = data->beacon_int;
795 u64 delta = abs(tsf - now);
796
797 /* adjust after beaconing with new timestamp at old TBTT */
798 if (tsf > now) {
799 data->tsf_offset += delta;
800 data->bcn_delta = do_div(delta, bcn_int);
801 } else {
802 data->tsf_offset -= delta;
803 data->bcn_delta = -do_div(delta, bcn_int);
804 }
805 }
806
807 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
808 struct sk_buff *tx_skb,
809 struct ieee80211_channel *chan)
810 {
811 struct mac80211_hwsim_data *data = hw->priv;
812 struct sk_buff *skb;
813 struct hwsim_radiotap_hdr *hdr;
814 u16 flags;
815 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
816 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
817
818 if (!netif_running(hwsim_mon))
819 return;
820
821 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
822 if (skb == NULL)
823 return;
824
825 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
826 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
827 hdr->hdr.it_pad = 0;
828 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
829 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
830 (1 << IEEE80211_RADIOTAP_RATE) |
831 (1 << IEEE80211_RADIOTAP_TSFT) |
832 (1 << IEEE80211_RADIOTAP_CHANNEL));
833 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
834 hdr->rt_flags = 0;
835 hdr->rt_rate = txrate->bitrate / 5;
836 hdr->rt_channel = cpu_to_le16(chan->center_freq);
837 flags = IEEE80211_CHAN_2GHZ;
838 if (txrate->flags & IEEE80211_RATE_ERP_G)
839 flags |= IEEE80211_CHAN_OFDM;
840 else
841 flags |= IEEE80211_CHAN_CCK;
842 hdr->rt_chbitmask = cpu_to_le16(flags);
843
844 skb->dev = hwsim_mon;
845 skb_set_mac_header(skb, 0);
846 skb->ip_summed = CHECKSUM_UNNECESSARY;
847 skb->pkt_type = PACKET_OTHERHOST;
848 skb->protocol = htons(ETH_P_802_2);
849 memset(skb->cb, 0, sizeof(skb->cb));
850 netif_rx(skb);
851 }
852
853
854 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
855 const u8 *addr)
856 {
857 struct sk_buff *skb;
858 struct hwsim_radiotap_ack_hdr *hdr;
859 u16 flags;
860 struct ieee80211_hdr *hdr11;
861
862 if (!netif_running(hwsim_mon))
863 return;
864
865 skb = dev_alloc_skb(100);
866 if (skb == NULL)
867 return;
868
869 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
870 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
871 hdr->hdr.it_pad = 0;
872 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
873 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
874 (1 << IEEE80211_RADIOTAP_CHANNEL));
875 hdr->rt_flags = 0;
876 hdr->pad = 0;
877 hdr->rt_channel = cpu_to_le16(chan->center_freq);
878 flags = IEEE80211_CHAN_2GHZ;
879 hdr->rt_chbitmask = cpu_to_le16(flags);
880
881 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
882 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
883 IEEE80211_STYPE_ACK);
884 hdr11->duration_id = cpu_to_le16(0);
885 memcpy(hdr11->addr1, addr, ETH_ALEN);
886
887 skb->dev = hwsim_mon;
888 skb_set_mac_header(skb, 0);
889 skb->ip_summed = CHECKSUM_UNNECESSARY;
890 skb->pkt_type = PACKET_OTHERHOST;
891 skb->protocol = htons(ETH_P_802_2);
892 memset(skb->cb, 0, sizeof(skb->cb));
893 netif_rx(skb);
894 }
895
896 struct mac80211_hwsim_addr_match_data {
897 u8 addr[ETH_ALEN];
898 bool ret;
899 };
900
901 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
902 struct ieee80211_vif *vif)
903 {
904 struct mac80211_hwsim_addr_match_data *md = data;
905
906 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
907 md->ret = true;
908 }
909
910 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
911 const u8 *addr)
912 {
913 struct mac80211_hwsim_addr_match_data md = {
914 .ret = false,
915 };
916
917 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
918 return true;
919
920 memcpy(md.addr, addr, ETH_ALEN);
921
922 ieee80211_iterate_active_interfaces_atomic(data->hw,
923 IEEE80211_IFACE_ITER_NORMAL,
924 mac80211_hwsim_addr_iter,
925 &md);
926
927 return md.ret;
928 }
929
930 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
931 struct sk_buff *skb)
932 {
933 switch (data->ps) {
934 case PS_DISABLED:
935 return true;
936 case PS_ENABLED:
937 return false;
938 case PS_AUTO_POLL:
939 /* TODO: accept (some) Beacons by default and other frames only
940 * if pending PS-Poll has been sent */
941 return true;
942 case PS_MANUAL_POLL:
943 /* Allow unicast frames to own address if there is a pending
944 * PS-Poll */
945 if (data->ps_poll_pending &&
946 mac80211_hwsim_addr_match(data, skb->data + 4)) {
947 data->ps_poll_pending = false;
948 return true;
949 }
950 return false;
951 }
952
953 return true;
954 }
955
956 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
957 struct sk_buff *my_skb,
958 int dst_portid)
959 {
960 struct sk_buff *skb;
961 struct mac80211_hwsim_data *data = hw->priv;
962 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
963 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
964 void *msg_head;
965 unsigned int hwsim_flags = 0;
966 int i;
967 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
968
969 if (data->ps != PS_DISABLED)
970 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
971 /* If the queue contains MAX_QUEUE skb's drop some */
972 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
973 /* Droping until WARN_QUEUE level */
974 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
975 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
976 data->tx_dropped++;
977 }
978 }
979
980 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
981 if (skb == NULL)
982 goto nla_put_failure;
983
984 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
985 HWSIM_CMD_FRAME);
986 if (msg_head == NULL) {
987 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
988 goto nla_put_failure;
989 }
990
991 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER, ETH_ALEN, hdr->addr2))
992 goto nla_put_failure;
993
994 /* We get the skb->data */
995 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
996 goto nla_put_failure;
997
998 /* We get the flags for this transmission, and we translate them to
999 wmediumd flags */
1000
1001 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1002 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1003
1004 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1005 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1006
1007 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1008 goto nla_put_failure;
1009
1010 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1011 goto nla_put_failure;
1012
1013 /* We get the tx control (rate and retries) info*/
1014
1015 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1016 tx_attempts[i].idx = info->status.rates[i].idx;
1017 tx_attempts[i].count = info->status.rates[i].count;
1018 }
1019
1020 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1021 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1022 tx_attempts))
1023 goto nla_put_failure;
1024
1025 /* We create a cookie to identify this skb */
1026 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
1027 goto nla_put_failure;
1028
1029 genlmsg_end(skb, msg_head);
1030 if (genlmsg_unicast(&init_net, skb, dst_portid))
1031 goto err_free_txskb;
1032
1033 /* Enqueue the packet */
1034 skb_queue_tail(&data->pending, my_skb);
1035 data->tx_pkts++;
1036 data->tx_bytes += my_skb->len;
1037 return;
1038
1039 nla_put_failure:
1040 nlmsg_free(skb);
1041 err_free_txskb:
1042 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1043 ieee80211_free_txskb(hw, my_skb);
1044 data->tx_failed++;
1045 }
1046
1047 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1048 struct ieee80211_channel *c2)
1049 {
1050 if (!c1 || !c2)
1051 return false;
1052
1053 return c1->center_freq == c2->center_freq;
1054 }
1055
1056 struct tx_iter_data {
1057 struct ieee80211_channel *channel;
1058 bool receive;
1059 };
1060
1061 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1062 struct ieee80211_vif *vif)
1063 {
1064 struct tx_iter_data *data = _data;
1065
1066 if (!vif->chanctx_conf)
1067 return;
1068
1069 if (!hwsim_chans_compat(data->channel,
1070 rcu_dereference(vif->chanctx_conf)->def.chan))
1071 return;
1072
1073 data->receive = true;
1074 }
1075
1076 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1077 {
1078 /*
1079 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1080 * e.g. like this:
1081 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1082 * (but you should use a valid OUI, not that)
1083 *
1084 * If anyone wants to 'donate' a radiotap OUI/subns code
1085 * please send a patch removing this #ifdef and changing
1086 * the values accordingly.
1087 */
1088 #ifdef HWSIM_RADIOTAP_OUI
1089 struct ieee80211_vendor_radiotap *rtap;
1090
1091 /*
1092 * Note that this code requires the headroom in the SKB
1093 * that was allocated earlier.
1094 */
1095 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1096 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1097 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1098 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1099 rtap->subns = 127;
1100
1101 /*
1102 * Radiotap vendor namespaces can (and should) also be
1103 * split into fields by using the standard radiotap
1104 * presence bitmap mechanism. Use just BIT(0) here for
1105 * the presence bitmap.
1106 */
1107 rtap->present = BIT(0);
1108 /* We have 8 bytes of (dummy) data */
1109 rtap->len = 8;
1110 /* For testing, also require it to be aligned */
1111 rtap->align = 8;
1112 /* And also test that padding works, 4 bytes */
1113 rtap->pad = 4;
1114 /* push the data */
1115 memcpy(rtap->data, "ABCDEFGH", 8);
1116 /* make sure to clear padding, mac80211 doesn't */
1117 memset(rtap->data + 8, 0, 4);
1118
1119 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1120 #endif
1121 }
1122
1123 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1124 struct sk_buff *skb,
1125 struct ieee80211_channel *chan)
1126 {
1127 struct mac80211_hwsim_data *data = hw->priv, *data2;
1128 bool ack = false;
1129 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1130 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1131 struct ieee80211_rx_status rx_status;
1132 u64 now;
1133
1134 memset(&rx_status, 0, sizeof(rx_status));
1135 rx_status.flag |= RX_FLAG_MACTIME_START;
1136 rx_status.freq = chan->center_freq;
1137 rx_status.band = chan->band;
1138 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1139 rx_status.rate_idx =
1140 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1141 rx_status.vht_nss =
1142 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1143 rx_status.flag |= RX_FLAG_VHT;
1144 } else {
1145 rx_status.rate_idx = info->control.rates[0].idx;
1146 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1147 rx_status.flag |= RX_FLAG_HT;
1148 }
1149 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1150 rx_status.flag |= RX_FLAG_40MHZ;
1151 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1152 rx_status.flag |= RX_FLAG_SHORT_GI;
1153 /* TODO: simulate real signal strength (and optional packet loss) */
1154 rx_status.signal = data->power_level - 50;
1155
1156 if (data->ps != PS_DISABLED)
1157 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1158
1159 /* release the skb's source info */
1160 skb_orphan(skb);
1161 skb_dst_drop(skb);
1162 skb->mark = 0;
1163 secpath_reset(skb);
1164 nf_reset(skb);
1165
1166 /*
1167 * Get absolute mactime here so all HWs RX at the "same time", and
1168 * absolute TX time for beacon mactime so the timestamp matches.
1169 * Giving beacons a different mactime than non-beacons looks messy, but
1170 * it helps the Toffset be exact and a ~10us mactime discrepancy
1171 * probably doesn't really matter.
1172 */
1173 if (ieee80211_is_beacon(hdr->frame_control) ||
1174 ieee80211_is_probe_resp(hdr->frame_control))
1175 now = data->abs_bcn_ts;
1176 else
1177 now = mac80211_hwsim_get_tsf_raw();
1178
1179 /* Copy skb to all enabled radios that are on the current frequency */
1180 spin_lock(&hwsim_radio_lock);
1181 list_for_each_entry(data2, &hwsim_radios, list) {
1182 struct sk_buff *nskb;
1183 struct tx_iter_data tx_iter_data = {
1184 .receive = false,
1185 .channel = chan,
1186 };
1187
1188 if (data == data2)
1189 continue;
1190
1191 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1192 !hwsim_ps_rx_ok(data2, skb))
1193 continue;
1194
1195 if (!(data->group & data2->group))
1196 continue;
1197
1198 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1199 !hwsim_chans_compat(chan, data2->channel)) {
1200 ieee80211_iterate_active_interfaces_atomic(
1201 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1202 mac80211_hwsim_tx_iter, &tx_iter_data);
1203 if (!tx_iter_data.receive)
1204 continue;
1205 }
1206
1207 /*
1208 * reserve some space for our vendor and the normal
1209 * radiotap header, since we're copying anyway
1210 */
1211 if (skb->len < PAGE_SIZE && paged_rx) {
1212 struct page *page = alloc_page(GFP_ATOMIC);
1213
1214 if (!page)
1215 continue;
1216
1217 nskb = dev_alloc_skb(128);
1218 if (!nskb) {
1219 __free_page(page);
1220 continue;
1221 }
1222
1223 memcpy(page_address(page), skb->data, skb->len);
1224 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1225 } else {
1226 nskb = skb_copy(skb, GFP_ATOMIC);
1227 if (!nskb)
1228 continue;
1229 }
1230
1231 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1232 ack = true;
1233
1234 rx_status.mactime = now + data2->tsf_offset;
1235
1236 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1237
1238 mac80211_hwsim_add_vendor_rtap(nskb);
1239
1240 data2->rx_pkts++;
1241 data2->rx_bytes += nskb->len;
1242 ieee80211_rx_irqsafe(data2->hw, nskb);
1243 }
1244 spin_unlock(&hwsim_radio_lock);
1245
1246 return ack;
1247 }
1248
1249 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1250 struct ieee80211_tx_control *control,
1251 struct sk_buff *skb)
1252 {
1253 struct mac80211_hwsim_data *data = hw->priv;
1254 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1255 struct ieee80211_chanctx_conf *chanctx_conf;
1256 struct ieee80211_channel *channel;
1257 bool ack;
1258 u32 _portid;
1259
1260 if (WARN_ON(skb->len < 10)) {
1261 /* Should not happen; just a sanity check for addr1 use */
1262 ieee80211_free_txskb(hw, skb);
1263 return;
1264 }
1265
1266 if (!data->use_chanctx) {
1267 channel = data->channel;
1268 } else if (txi->hw_queue == 4) {
1269 channel = data->tmp_chan;
1270 } else {
1271 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1272 if (chanctx_conf)
1273 channel = chanctx_conf->def.chan;
1274 else
1275 channel = NULL;
1276 }
1277
1278 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1279 ieee80211_free_txskb(hw, skb);
1280 return;
1281 }
1282
1283 if (data->idle && !data->tmp_chan) {
1284 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1285 ieee80211_free_txskb(hw, skb);
1286 return;
1287 }
1288
1289 if (txi->control.vif)
1290 hwsim_check_magic(txi->control.vif);
1291 if (control->sta)
1292 hwsim_check_sta_magic(control->sta);
1293
1294 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1295 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1296 txi->control.rates,
1297 ARRAY_SIZE(txi->control.rates));
1298
1299 txi->rate_driver_data[0] = channel;
1300 mac80211_hwsim_monitor_rx(hw, skb, channel);
1301
1302 /* wmediumd mode check */
1303 _portid = ACCESS_ONCE(wmediumd_portid);
1304
1305 if (_portid)
1306 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1307
1308 /* NO wmediumd detected, perfect medium simulation */
1309 data->tx_pkts++;
1310 data->tx_bytes += skb->len;
1311 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1312
1313 if (ack && skb->len >= 16) {
1314 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1315 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1316 }
1317
1318 ieee80211_tx_info_clear_status(txi);
1319
1320 /* frame was transmitted at most favorable rate at first attempt */
1321 txi->control.rates[0].count = 1;
1322 txi->control.rates[1].idx = -1;
1323
1324 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1325 txi->flags |= IEEE80211_TX_STAT_ACK;
1326 ieee80211_tx_status_irqsafe(hw, skb);
1327 }
1328
1329
1330 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1331 {
1332 struct mac80211_hwsim_data *data = hw->priv;
1333 wiphy_debug(hw->wiphy, "%s\n", __func__);
1334 data->started = true;
1335 return 0;
1336 }
1337
1338
1339 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1340 {
1341 struct mac80211_hwsim_data *data = hw->priv;
1342 data->started = false;
1343 tasklet_hrtimer_cancel(&data->beacon_timer);
1344 wiphy_debug(hw->wiphy, "%s\n", __func__);
1345 }
1346
1347
1348 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1349 struct ieee80211_vif *vif)
1350 {
1351 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1352 __func__, ieee80211_vif_type_p2p(vif),
1353 vif->addr);
1354 hwsim_set_magic(vif);
1355
1356 vif->cab_queue = 0;
1357 vif->hw_queue[IEEE80211_AC_VO] = 0;
1358 vif->hw_queue[IEEE80211_AC_VI] = 1;
1359 vif->hw_queue[IEEE80211_AC_BE] = 2;
1360 vif->hw_queue[IEEE80211_AC_BK] = 3;
1361
1362 return 0;
1363 }
1364
1365
1366 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1367 struct ieee80211_vif *vif,
1368 enum nl80211_iftype newtype,
1369 bool newp2p)
1370 {
1371 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1372 wiphy_debug(hw->wiphy,
1373 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1374 __func__, ieee80211_vif_type_p2p(vif),
1375 newtype, vif->addr);
1376 hwsim_check_magic(vif);
1377
1378 /*
1379 * interface may change from non-AP to AP in
1380 * which case this needs to be set up again
1381 */
1382 vif->cab_queue = 0;
1383
1384 return 0;
1385 }
1386
1387 static void mac80211_hwsim_remove_interface(
1388 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1389 {
1390 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1391 __func__, ieee80211_vif_type_p2p(vif),
1392 vif->addr);
1393 hwsim_check_magic(vif);
1394 hwsim_clear_magic(vif);
1395 }
1396
1397 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1398 struct sk_buff *skb,
1399 struct ieee80211_channel *chan)
1400 {
1401 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1402
1403 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1404 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1405 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1406 txi->control.rates,
1407 ARRAY_SIZE(txi->control.rates));
1408 }
1409
1410 mac80211_hwsim_monitor_rx(hw, skb, chan);
1411
1412 if (_pid)
1413 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1414
1415 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1416 dev_kfree_skb(skb);
1417 }
1418
1419 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1420 struct ieee80211_vif *vif)
1421 {
1422 struct mac80211_hwsim_data *data = arg;
1423 struct ieee80211_hw *hw = data->hw;
1424 struct ieee80211_tx_info *info;
1425 struct ieee80211_rate *txrate;
1426 struct ieee80211_mgmt *mgmt;
1427 struct sk_buff *skb;
1428
1429 hwsim_check_magic(vif);
1430
1431 if (vif->type != NL80211_IFTYPE_AP &&
1432 vif->type != NL80211_IFTYPE_MESH_POINT &&
1433 vif->type != NL80211_IFTYPE_ADHOC)
1434 return;
1435
1436 skb = ieee80211_beacon_get(hw, vif);
1437 if (skb == NULL)
1438 return;
1439 info = IEEE80211_SKB_CB(skb);
1440 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1441 ieee80211_get_tx_rates(vif, NULL, skb,
1442 info->control.rates,
1443 ARRAY_SIZE(info->control.rates));
1444
1445 txrate = ieee80211_get_tx_rate(hw, info);
1446
1447 mgmt = (struct ieee80211_mgmt *) skb->data;
1448 /* fake header transmission time */
1449 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1450 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1451 data->tsf_offset +
1452 24 * 8 * 10 / txrate->bitrate);
1453
1454 mac80211_hwsim_tx_frame(hw, skb,
1455 rcu_dereference(vif->chanctx_conf)->def.chan);
1456
1457 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1458 ieee80211_csa_finish(vif);
1459 }
1460
1461 static enum hrtimer_restart
1462 mac80211_hwsim_beacon(struct hrtimer *timer)
1463 {
1464 struct mac80211_hwsim_data *data =
1465 container_of(timer, struct mac80211_hwsim_data,
1466 beacon_timer.timer);
1467 struct ieee80211_hw *hw = data->hw;
1468 u64 bcn_int = data->beacon_int;
1469 ktime_t next_bcn;
1470
1471 if (!data->started)
1472 goto out;
1473
1474 ieee80211_iterate_active_interfaces_atomic(
1475 hw, IEEE80211_IFACE_ITER_NORMAL,
1476 mac80211_hwsim_beacon_tx, data);
1477
1478 /* beacon at new TBTT + beacon interval */
1479 if (data->bcn_delta) {
1480 bcn_int -= data->bcn_delta;
1481 data->bcn_delta = 0;
1482 }
1483
1484 next_bcn = ktime_add(hrtimer_get_expires(timer),
1485 ns_to_ktime(bcn_int * 1000));
1486 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1487 out:
1488 return HRTIMER_NORESTART;
1489 }
1490
1491 static const char * const hwsim_chanwidths[] = {
1492 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1493 [NL80211_CHAN_WIDTH_20] = "ht20",
1494 [NL80211_CHAN_WIDTH_40] = "ht40",
1495 [NL80211_CHAN_WIDTH_80] = "vht80",
1496 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1497 [NL80211_CHAN_WIDTH_160] = "vht160",
1498 };
1499
1500 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1501 {
1502 struct mac80211_hwsim_data *data = hw->priv;
1503 struct ieee80211_conf *conf = &hw->conf;
1504 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1505 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1506 [IEEE80211_SMPS_OFF] = "off",
1507 [IEEE80211_SMPS_STATIC] = "static",
1508 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1509 };
1510
1511 if (conf->chandef.chan)
1512 wiphy_debug(hw->wiphy,
1513 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1514 __func__,
1515 conf->chandef.chan->center_freq,
1516 conf->chandef.center_freq1,
1517 conf->chandef.center_freq2,
1518 hwsim_chanwidths[conf->chandef.width],
1519 !!(conf->flags & IEEE80211_CONF_IDLE),
1520 !!(conf->flags & IEEE80211_CONF_PS),
1521 smps_modes[conf->smps_mode]);
1522 else
1523 wiphy_debug(hw->wiphy,
1524 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1525 __func__,
1526 !!(conf->flags & IEEE80211_CONF_IDLE),
1527 !!(conf->flags & IEEE80211_CONF_PS),
1528 smps_modes[conf->smps_mode]);
1529
1530 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1531
1532 data->channel = conf->chandef.chan;
1533
1534 WARN_ON(data->channel && data->use_chanctx);
1535
1536 data->power_level = conf->power_level;
1537 if (!data->started || !data->beacon_int)
1538 tasklet_hrtimer_cancel(&data->beacon_timer);
1539 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1540 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1541 u32 bcn_int = data->beacon_int;
1542 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1543
1544 tasklet_hrtimer_start(&data->beacon_timer,
1545 ns_to_ktime(until_tbtt * 1000),
1546 HRTIMER_MODE_REL);
1547 }
1548
1549 return 0;
1550 }
1551
1552
1553 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1554 unsigned int changed_flags,
1555 unsigned int *total_flags,u64 multicast)
1556 {
1557 struct mac80211_hwsim_data *data = hw->priv;
1558
1559 wiphy_debug(hw->wiphy, "%s\n", __func__);
1560
1561 data->rx_filter = 0;
1562 if (*total_flags & FIF_ALLMULTI)
1563 data->rx_filter |= FIF_ALLMULTI;
1564
1565 *total_flags = data->rx_filter;
1566 }
1567
1568 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1569 struct ieee80211_vif *vif)
1570 {
1571 unsigned int *count = data;
1572 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1573
1574 if (vp->bcn_en)
1575 (*count)++;
1576 }
1577
1578 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1579 struct ieee80211_vif *vif,
1580 struct ieee80211_bss_conf *info,
1581 u32 changed)
1582 {
1583 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1584 struct mac80211_hwsim_data *data = hw->priv;
1585
1586 hwsim_check_magic(vif);
1587
1588 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1589 __func__, changed, vif->addr);
1590
1591 if (changed & BSS_CHANGED_BSSID) {
1592 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1593 __func__, info->bssid);
1594 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1595 }
1596
1597 if (changed & BSS_CHANGED_ASSOC) {
1598 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1599 info->assoc, info->aid);
1600 vp->assoc = info->assoc;
1601 vp->aid = info->aid;
1602 }
1603
1604 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1605 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1606 info->enable_beacon, info->beacon_int);
1607 vp->bcn_en = info->enable_beacon;
1608 if (data->started &&
1609 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1610 info->enable_beacon) {
1611 u64 tsf, until_tbtt;
1612 u32 bcn_int;
1613 data->beacon_int = info->beacon_int * 1024;
1614 tsf = mac80211_hwsim_get_tsf(hw, vif);
1615 bcn_int = data->beacon_int;
1616 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1617 tasklet_hrtimer_start(&data->beacon_timer,
1618 ns_to_ktime(until_tbtt * 1000),
1619 HRTIMER_MODE_REL);
1620 } else if (!info->enable_beacon) {
1621 unsigned int count = 0;
1622 ieee80211_iterate_active_interfaces_atomic(
1623 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1624 mac80211_hwsim_bcn_en_iter, &count);
1625 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1626 count);
1627 if (count == 0) {
1628 tasklet_hrtimer_cancel(&data->beacon_timer);
1629 data->beacon_int = 0;
1630 }
1631 }
1632 }
1633
1634 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1635 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1636 info->use_cts_prot);
1637 }
1638
1639 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1640 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1641 info->use_short_preamble);
1642 }
1643
1644 if (changed & BSS_CHANGED_ERP_SLOT) {
1645 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1646 }
1647
1648 if (changed & BSS_CHANGED_HT) {
1649 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1650 info->ht_operation_mode);
1651 }
1652
1653 if (changed & BSS_CHANGED_BASIC_RATES) {
1654 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1655 (unsigned long long) info->basic_rates);
1656 }
1657
1658 if (changed & BSS_CHANGED_TXPOWER)
1659 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1660 }
1661
1662 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1663 struct ieee80211_vif *vif,
1664 struct ieee80211_sta *sta)
1665 {
1666 hwsim_check_magic(vif);
1667 hwsim_set_sta_magic(sta);
1668
1669 return 0;
1670 }
1671
1672 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1673 struct ieee80211_vif *vif,
1674 struct ieee80211_sta *sta)
1675 {
1676 hwsim_check_magic(vif);
1677 hwsim_clear_sta_magic(sta);
1678
1679 return 0;
1680 }
1681
1682 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1683 struct ieee80211_vif *vif,
1684 enum sta_notify_cmd cmd,
1685 struct ieee80211_sta *sta)
1686 {
1687 hwsim_check_magic(vif);
1688
1689 switch (cmd) {
1690 case STA_NOTIFY_SLEEP:
1691 case STA_NOTIFY_AWAKE:
1692 /* TODO: make good use of these flags */
1693 break;
1694 default:
1695 WARN(1, "Invalid sta notify: %d\n", cmd);
1696 break;
1697 }
1698 }
1699
1700 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1701 struct ieee80211_sta *sta,
1702 bool set)
1703 {
1704 hwsim_check_sta_magic(sta);
1705 return 0;
1706 }
1707
1708 static int mac80211_hwsim_conf_tx(
1709 struct ieee80211_hw *hw,
1710 struct ieee80211_vif *vif, u16 queue,
1711 const struct ieee80211_tx_queue_params *params)
1712 {
1713 wiphy_debug(hw->wiphy,
1714 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1715 __func__, queue,
1716 params->txop, params->cw_min,
1717 params->cw_max, params->aifs);
1718 return 0;
1719 }
1720
1721 static int mac80211_hwsim_get_survey(
1722 struct ieee80211_hw *hw, int idx,
1723 struct survey_info *survey)
1724 {
1725 struct ieee80211_conf *conf = &hw->conf;
1726
1727 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1728
1729 if (idx != 0)
1730 return -ENOENT;
1731
1732 /* Current channel */
1733 survey->channel = conf->chandef.chan;
1734
1735 /*
1736 * Magically conjured noise level --- this is only ok for simulated hardware.
1737 *
1738 * A real driver which cannot determine the real channel noise MUST NOT
1739 * report any noise, especially not a magically conjured one :-)
1740 */
1741 survey->filled = SURVEY_INFO_NOISE_DBM;
1742 survey->noise = -92;
1743
1744 return 0;
1745 }
1746
1747 #ifdef CONFIG_NL80211_TESTMODE
1748 /*
1749 * This section contains example code for using netlink
1750 * attributes with the testmode command in nl80211.
1751 */
1752
1753 /* These enums need to be kept in sync with userspace */
1754 enum hwsim_testmode_attr {
1755 __HWSIM_TM_ATTR_INVALID = 0,
1756 HWSIM_TM_ATTR_CMD = 1,
1757 HWSIM_TM_ATTR_PS = 2,
1758
1759 /* keep last */
1760 __HWSIM_TM_ATTR_AFTER_LAST,
1761 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1762 };
1763
1764 enum hwsim_testmode_cmd {
1765 HWSIM_TM_CMD_SET_PS = 0,
1766 HWSIM_TM_CMD_GET_PS = 1,
1767 HWSIM_TM_CMD_STOP_QUEUES = 2,
1768 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1769 };
1770
1771 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1772 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1773 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1774 };
1775
1776 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1777 struct ieee80211_vif *vif,
1778 void *data, int len)
1779 {
1780 struct mac80211_hwsim_data *hwsim = hw->priv;
1781 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1782 struct sk_buff *skb;
1783 int err, ps;
1784
1785 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1786 hwsim_testmode_policy);
1787 if (err)
1788 return err;
1789
1790 if (!tb[HWSIM_TM_ATTR_CMD])
1791 return -EINVAL;
1792
1793 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1794 case HWSIM_TM_CMD_SET_PS:
1795 if (!tb[HWSIM_TM_ATTR_PS])
1796 return -EINVAL;
1797 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1798 return hwsim_fops_ps_write(hwsim, ps);
1799 case HWSIM_TM_CMD_GET_PS:
1800 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1801 nla_total_size(sizeof(u32)));
1802 if (!skb)
1803 return -ENOMEM;
1804 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1805 goto nla_put_failure;
1806 return cfg80211_testmode_reply(skb);
1807 case HWSIM_TM_CMD_STOP_QUEUES:
1808 ieee80211_stop_queues(hw);
1809 return 0;
1810 case HWSIM_TM_CMD_WAKE_QUEUES:
1811 ieee80211_wake_queues(hw);
1812 return 0;
1813 default:
1814 return -EOPNOTSUPP;
1815 }
1816
1817 nla_put_failure:
1818 kfree_skb(skb);
1819 return -ENOBUFS;
1820 }
1821 #endif
1822
1823 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1824 struct ieee80211_vif *vif,
1825 struct ieee80211_ampdu_params *params)
1826 {
1827 struct ieee80211_sta *sta = params->sta;
1828 enum ieee80211_ampdu_mlme_action action = params->action;
1829 u16 tid = params->tid;
1830
1831 switch (action) {
1832 case IEEE80211_AMPDU_TX_START:
1833 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1834 break;
1835 case IEEE80211_AMPDU_TX_STOP_CONT:
1836 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1837 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1838 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1839 break;
1840 case IEEE80211_AMPDU_TX_OPERATIONAL:
1841 break;
1842 case IEEE80211_AMPDU_RX_START:
1843 case IEEE80211_AMPDU_RX_STOP:
1844 break;
1845 default:
1846 return -EOPNOTSUPP;
1847 }
1848
1849 return 0;
1850 }
1851
1852 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1853 struct ieee80211_vif *vif,
1854 u32 queues, bool drop)
1855 {
1856 /* Not implemented, queues only on kernel side */
1857 }
1858
1859 static void hw_scan_work(struct work_struct *work)
1860 {
1861 struct mac80211_hwsim_data *hwsim =
1862 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1863 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1864 int dwell, i;
1865
1866 mutex_lock(&hwsim->mutex);
1867 if (hwsim->scan_chan_idx >= req->n_channels) {
1868 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1869 ieee80211_scan_completed(hwsim->hw, false);
1870 hwsim->hw_scan_request = NULL;
1871 hwsim->hw_scan_vif = NULL;
1872 hwsim->tmp_chan = NULL;
1873 mutex_unlock(&hwsim->mutex);
1874 return;
1875 }
1876
1877 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1878 req->channels[hwsim->scan_chan_idx]->center_freq);
1879
1880 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1881 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1882 !req->n_ssids) {
1883 dwell = 120;
1884 } else {
1885 dwell = 30;
1886 /* send probes */
1887 for (i = 0; i < req->n_ssids; i++) {
1888 struct sk_buff *probe;
1889
1890 probe = ieee80211_probereq_get(hwsim->hw,
1891 hwsim->scan_addr,
1892 req->ssids[i].ssid,
1893 req->ssids[i].ssid_len,
1894 req->ie_len);
1895 if (!probe)
1896 continue;
1897
1898 if (req->ie_len)
1899 memcpy(skb_put(probe, req->ie_len), req->ie,
1900 req->ie_len);
1901
1902 local_bh_disable();
1903 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1904 hwsim->tmp_chan);
1905 local_bh_enable();
1906 }
1907 }
1908 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1909 msecs_to_jiffies(dwell));
1910 hwsim->scan_chan_idx++;
1911 mutex_unlock(&hwsim->mutex);
1912 }
1913
1914 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1915 struct ieee80211_vif *vif,
1916 struct ieee80211_scan_request *hw_req)
1917 {
1918 struct mac80211_hwsim_data *hwsim = hw->priv;
1919 struct cfg80211_scan_request *req = &hw_req->req;
1920
1921 mutex_lock(&hwsim->mutex);
1922 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1923 mutex_unlock(&hwsim->mutex);
1924 return -EBUSY;
1925 }
1926 hwsim->hw_scan_request = req;
1927 hwsim->hw_scan_vif = vif;
1928 hwsim->scan_chan_idx = 0;
1929 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1930 get_random_mask_addr(hwsim->scan_addr,
1931 hw_req->req.mac_addr,
1932 hw_req->req.mac_addr_mask);
1933 else
1934 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1935 mutex_unlock(&hwsim->mutex);
1936
1937 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1938
1939 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1940
1941 return 0;
1942 }
1943
1944 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1945 struct ieee80211_vif *vif)
1946 {
1947 struct mac80211_hwsim_data *hwsim = hw->priv;
1948
1949 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1950
1951 cancel_delayed_work_sync(&hwsim->hw_scan);
1952
1953 mutex_lock(&hwsim->mutex);
1954 ieee80211_scan_completed(hwsim->hw, true);
1955 hwsim->tmp_chan = NULL;
1956 hwsim->hw_scan_request = NULL;
1957 hwsim->hw_scan_vif = NULL;
1958 mutex_unlock(&hwsim->mutex);
1959 }
1960
1961 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1962 struct ieee80211_vif *vif,
1963 const u8 *mac_addr)
1964 {
1965 struct mac80211_hwsim_data *hwsim = hw->priv;
1966
1967 mutex_lock(&hwsim->mutex);
1968
1969 if (hwsim->scanning) {
1970 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1971 goto out;
1972 }
1973
1974 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1975
1976 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1977 hwsim->scanning = true;
1978
1979 out:
1980 mutex_unlock(&hwsim->mutex);
1981 }
1982
1983 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
1984 struct ieee80211_vif *vif)
1985 {
1986 struct mac80211_hwsim_data *hwsim = hw->priv;
1987
1988 mutex_lock(&hwsim->mutex);
1989
1990 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1991 hwsim->scanning = false;
1992 eth_zero_addr(hwsim->scan_addr);
1993
1994 mutex_unlock(&hwsim->mutex);
1995 }
1996
1997 static void hw_roc_done(struct work_struct *work)
1998 {
1999 struct mac80211_hwsim_data *hwsim =
2000 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2001
2002 mutex_lock(&hwsim->mutex);
2003 ieee80211_remain_on_channel_expired(hwsim->hw);
2004 hwsim->tmp_chan = NULL;
2005 mutex_unlock(&hwsim->mutex);
2006
2007 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2008 }
2009
2010 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2011 struct ieee80211_vif *vif,
2012 struct ieee80211_channel *chan,
2013 int duration,
2014 enum ieee80211_roc_type type)
2015 {
2016 struct mac80211_hwsim_data *hwsim = hw->priv;
2017
2018 mutex_lock(&hwsim->mutex);
2019 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2020 mutex_unlock(&hwsim->mutex);
2021 return -EBUSY;
2022 }
2023
2024 hwsim->tmp_chan = chan;
2025 mutex_unlock(&hwsim->mutex);
2026
2027 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2028 chan->center_freq, duration);
2029
2030 ieee80211_ready_on_channel(hw);
2031
2032 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
2033 msecs_to_jiffies(duration));
2034 return 0;
2035 }
2036
2037 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2038 {
2039 struct mac80211_hwsim_data *hwsim = hw->priv;
2040
2041 cancel_delayed_work_sync(&hwsim->roc_done);
2042
2043 mutex_lock(&hwsim->mutex);
2044 hwsim->tmp_chan = NULL;
2045 mutex_unlock(&hwsim->mutex);
2046
2047 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2048
2049 return 0;
2050 }
2051
2052 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2053 struct ieee80211_chanctx_conf *ctx)
2054 {
2055 hwsim_set_chanctx_magic(ctx);
2056 wiphy_debug(hw->wiphy,
2057 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2058 ctx->def.chan->center_freq, ctx->def.width,
2059 ctx->def.center_freq1, ctx->def.center_freq2);
2060 return 0;
2061 }
2062
2063 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2064 struct ieee80211_chanctx_conf *ctx)
2065 {
2066 wiphy_debug(hw->wiphy,
2067 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2068 ctx->def.chan->center_freq, ctx->def.width,
2069 ctx->def.center_freq1, ctx->def.center_freq2);
2070 hwsim_check_chanctx_magic(ctx);
2071 hwsim_clear_chanctx_magic(ctx);
2072 }
2073
2074 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2075 struct ieee80211_chanctx_conf *ctx,
2076 u32 changed)
2077 {
2078 hwsim_check_chanctx_magic(ctx);
2079 wiphy_debug(hw->wiphy,
2080 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2081 ctx->def.chan->center_freq, ctx->def.width,
2082 ctx->def.center_freq1, ctx->def.center_freq2);
2083 }
2084
2085 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2086 struct ieee80211_vif *vif,
2087 struct ieee80211_chanctx_conf *ctx)
2088 {
2089 hwsim_check_magic(vif);
2090 hwsim_check_chanctx_magic(ctx);
2091
2092 return 0;
2093 }
2094
2095 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2096 struct ieee80211_vif *vif,
2097 struct ieee80211_chanctx_conf *ctx)
2098 {
2099 hwsim_check_magic(vif);
2100 hwsim_check_chanctx_magic(ctx);
2101 }
2102
2103 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2104 "tx_pkts_nic",
2105 "tx_bytes_nic",
2106 "rx_pkts_nic",
2107 "rx_bytes_nic",
2108 "d_tx_dropped",
2109 "d_tx_failed",
2110 "d_ps_mode",
2111 "d_group",
2112 "d_tx_power",
2113 };
2114
2115 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2116
2117 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2118 struct ieee80211_vif *vif,
2119 u32 sset, u8 *data)
2120 {
2121 if (sset == ETH_SS_STATS)
2122 memcpy(data, *mac80211_hwsim_gstrings_stats,
2123 sizeof(mac80211_hwsim_gstrings_stats));
2124 }
2125
2126 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2127 struct ieee80211_vif *vif, int sset)
2128 {
2129 if (sset == ETH_SS_STATS)
2130 return MAC80211_HWSIM_SSTATS_LEN;
2131 return 0;
2132 }
2133
2134 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2135 struct ieee80211_vif *vif,
2136 struct ethtool_stats *stats, u64 *data)
2137 {
2138 struct mac80211_hwsim_data *ar = hw->priv;
2139 int i = 0;
2140
2141 data[i++] = ar->tx_pkts;
2142 data[i++] = ar->tx_bytes;
2143 data[i++] = ar->rx_pkts;
2144 data[i++] = ar->rx_bytes;
2145 data[i++] = ar->tx_dropped;
2146 data[i++] = ar->tx_failed;
2147 data[i++] = ar->ps;
2148 data[i++] = ar->group;
2149 data[i++] = ar->power_level;
2150
2151 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2152 }
2153
2154 static const struct ieee80211_ops mac80211_hwsim_ops = {
2155 .tx = mac80211_hwsim_tx,
2156 .start = mac80211_hwsim_start,
2157 .stop = mac80211_hwsim_stop,
2158 .add_interface = mac80211_hwsim_add_interface,
2159 .change_interface = mac80211_hwsim_change_interface,
2160 .remove_interface = mac80211_hwsim_remove_interface,
2161 .config = mac80211_hwsim_config,
2162 .configure_filter = mac80211_hwsim_configure_filter,
2163 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2164 .sta_add = mac80211_hwsim_sta_add,
2165 .sta_remove = mac80211_hwsim_sta_remove,
2166 .sta_notify = mac80211_hwsim_sta_notify,
2167 .set_tim = mac80211_hwsim_set_tim,
2168 .conf_tx = mac80211_hwsim_conf_tx,
2169 .get_survey = mac80211_hwsim_get_survey,
2170 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2171 .ampdu_action = mac80211_hwsim_ampdu_action,
2172 .sw_scan_start = mac80211_hwsim_sw_scan,
2173 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2174 .flush = mac80211_hwsim_flush,
2175 .get_tsf = mac80211_hwsim_get_tsf,
2176 .set_tsf = mac80211_hwsim_set_tsf,
2177 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2178 .get_et_stats = mac80211_hwsim_get_et_stats,
2179 .get_et_strings = mac80211_hwsim_get_et_strings,
2180 };
2181
2182 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2183
2184 struct hwsim_new_radio_params {
2185 unsigned int channels;
2186 const char *reg_alpha2;
2187 const struct ieee80211_regdomain *regd;
2188 bool reg_strict;
2189 bool p2p_device;
2190 bool use_chanctx;
2191 bool destroy_on_close;
2192 const char *hwname;
2193 bool no_vif;
2194 };
2195
2196 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2197 struct genl_info *info)
2198 {
2199 if (info)
2200 genl_notify(&hwsim_genl_family, mcast_skb, info,
2201 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2202 else
2203 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2204 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2205 }
2206
2207 static int append_radio_msg(struct sk_buff *skb, int id,
2208 struct hwsim_new_radio_params *param)
2209 {
2210 int ret;
2211
2212 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2213 if (ret < 0)
2214 return ret;
2215
2216 if (param->channels) {
2217 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2218 if (ret < 0)
2219 return ret;
2220 }
2221
2222 if (param->reg_alpha2) {
2223 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2224 param->reg_alpha2);
2225 if (ret < 0)
2226 return ret;
2227 }
2228
2229 if (param->regd) {
2230 int i;
2231
2232 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2233 if (hwsim_world_regdom_custom[i] != param->regd)
2234 continue;
2235
2236 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2237 if (ret < 0)
2238 return ret;
2239 break;
2240 }
2241 }
2242
2243 if (param->reg_strict) {
2244 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2245 if (ret < 0)
2246 return ret;
2247 }
2248
2249 if (param->p2p_device) {
2250 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2251 if (ret < 0)
2252 return ret;
2253 }
2254
2255 if (param->use_chanctx) {
2256 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2257 if (ret < 0)
2258 return ret;
2259 }
2260
2261 if (param->hwname) {
2262 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2263 strlen(param->hwname), param->hwname);
2264 if (ret < 0)
2265 return ret;
2266 }
2267
2268 return 0;
2269 }
2270
2271 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2272 struct hwsim_new_radio_params *param)
2273 {
2274 struct sk_buff *mcast_skb;
2275 void *data;
2276
2277 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2278 if (!mcast_skb)
2279 return;
2280
2281 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2282 HWSIM_CMD_NEW_RADIO);
2283 if (!data)
2284 goto out_err;
2285
2286 if (append_radio_msg(mcast_skb, id, param) < 0)
2287 goto out_err;
2288
2289 genlmsg_end(mcast_skb, data);
2290
2291 hwsim_mcast_config_msg(mcast_skb, info);
2292 return;
2293
2294 out_err:
2295 genlmsg_cancel(mcast_skb, data);
2296 nlmsg_free(mcast_skb);
2297 }
2298
2299 static int mac80211_hwsim_new_radio(struct genl_info *info,
2300 struct hwsim_new_radio_params *param)
2301 {
2302 int err;
2303 u8 addr[ETH_ALEN];
2304 struct mac80211_hwsim_data *data;
2305 struct ieee80211_hw *hw;
2306 enum ieee80211_band band;
2307 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2308 int idx;
2309
2310 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2311 return -EINVAL;
2312
2313 spin_lock_bh(&hwsim_radio_lock);
2314 idx = hwsim_radio_idx++;
2315 spin_unlock_bh(&hwsim_radio_lock);
2316
2317 if (param->use_chanctx)
2318 ops = &mac80211_hwsim_mchan_ops;
2319 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2320 if (!hw) {
2321 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2322 err = -ENOMEM;
2323 goto failed;
2324 }
2325 data = hw->priv;
2326 data->hw = hw;
2327
2328 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2329 if (IS_ERR(data->dev)) {
2330 printk(KERN_DEBUG
2331 "mac80211_hwsim: device_create failed (%ld)\n",
2332 PTR_ERR(data->dev));
2333 err = -ENOMEM;
2334 goto failed_drvdata;
2335 }
2336 data->dev->driver = &mac80211_hwsim_driver.driver;
2337 err = device_bind_driver(data->dev);
2338 if (err != 0) {
2339 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2340 err);
2341 goto failed_bind;
2342 }
2343
2344 skb_queue_head_init(&data->pending);
2345
2346 SET_IEEE80211_DEV(hw, data->dev);
2347 eth_zero_addr(addr);
2348 addr[0] = 0x02;
2349 addr[3] = idx >> 8;
2350 addr[4] = idx;
2351 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2352 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2353 data->addresses[1].addr[0] |= 0x40;
2354 hw->wiphy->n_addresses = 2;
2355 hw->wiphy->addresses = data->addresses;
2356
2357 data->channels = param->channels;
2358 data->use_chanctx = param->use_chanctx;
2359 data->idx = idx;
2360 data->destroy_on_close = param->destroy_on_close;
2361 if (info)
2362 data->portid = info->snd_portid;
2363
2364 if (data->use_chanctx) {
2365 hw->wiphy->max_scan_ssids = 255;
2366 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2367 hw->wiphy->max_remain_on_channel_duration = 1000;
2368 /* For channels > 1 DFS is not allowed */
2369 hw->wiphy->n_iface_combinations = 1;
2370 hw->wiphy->iface_combinations = &data->if_combination;
2371 if (param->p2p_device)
2372 data->if_combination = hwsim_if_comb_p2p_dev[0];
2373 else
2374 data->if_combination = hwsim_if_comb[0];
2375 data->if_combination.num_different_channels = data->channels;
2376 } else if (param->p2p_device) {
2377 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2378 hw->wiphy->n_iface_combinations =
2379 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2380 } else {
2381 hw->wiphy->iface_combinations = hwsim_if_comb;
2382 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2383 }
2384
2385 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2386 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2387
2388 hw->queues = 5;
2389 hw->offchannel_tx_hw_queue = 4;
2390 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2391 BIT(NL80211_IFTYPE_AP) |
2392 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2393 BIT(NL80211_IFTYPE_P2P_GO) |
2394 BIT(NL80211_IFTYPE_ADHOC) |
2395 BIT(NL80211_IFTYPE_MESH_POINT);
2396
2397 if (param->p2p_device)
2398 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2399
2400 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2401 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2402 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2403 ieee80211_hw_set(hw, QUEUE_CONTROL);
2404 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2405 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2406 ieee80211_hw_set(hw, MFP_CAPABLE);
2407 ieee80211_hw_set(hw, SIGNAL_DBM);
2408 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2409 if (rctbl)
2410 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2411
2412 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2413 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2414 WIPHY_FLAG_AP_UAPSD |
2415 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2416 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2417 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2418 NL80211_FEATURE_STATIC_SMPS |
2419 NL80211_FEATURE_DYNAMIC_SMPS |
2420 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2421
2422 /* ask mac80211 to reserve space for magic */
2423 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2424 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2425 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2426
2427 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2428 sizeof(hwsim_channels_2ghz));
2429 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2430 sizeof(hwsim_channels_5ghz));
2431 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2432
2433 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2434 struct ieee80211_supported_band *sband = &data->bands[band];
2435 switch (band) {
2436 case IEEE80211_BAND_2GHZ:
2437 sband->channels = data->channels_2ghz;
2438 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2439 sband->bitrates = data->rates;
2440 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2441 break;
2442 case IEEE80211_BAND_5GHZ:
2443 sband->channels = data->channels_5ghz;
2444 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2445 sband->bitrates = data->rates + 4;
2446 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2447
2448 sband->vht_cap.vht_supported = true;
2449 sband->vht_cap.cap =
2450 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2451 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2452 IEEE80211_VHT_CAP_RXLDPC |
2453 IEEE80211_VHT_CAP_SHORT_GI_80 |
2454 IEEE80211_VHT_CAP_SHORT_GI_160 |
2455 IEEE80211_VHT_CAP_TXSTBC |
2456 IEEE80211_VHT_CAP_RXSTBC_1 |
2457 IEEE80211_VHT_CAP_RXSTBC_2 |
2458 IEEE80211_VHT_CAP_RXSTBC_3 |
2459 IEEE80211_VHT_CAP_RXSTBC_4 |
2460 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2461 sband->vht_cap.vht_mcs.rx_mcs_map =
2462 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2463 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2464 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2465 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2466 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2467 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2468 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2469 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2470 sband->vht_cap.vht_mcs.tx_mcs_map =
2471 sband->vht_cap.vht_mcs.rx_mcs_map;
2472 break;
2473 default:
2474 continue;
2475 }
2476
2477 sband->ht_cap.ht_supported = true;
2478 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2479 IEEE80211_HT_CAP_GRN_FLD |
2480 IEEE80211_HT_CAP_SGI_20 |
2481 IEEE80211_HT_CAP_SGI_40 |
2482 IEEE80211_HT_CAP_DSSSCCK40;
2483 sband->ht_cap.ampdu_factor = 0x3;
2484 sband->ht_cap.ampdu_density = 0x6;
2485 memset(&sband->ht_cap.mcs, 0,
2486 sizeof(sband->ht_cap.mcs));
2487 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2488 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2489 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2490
2491 hw->wiphy->bands[band] = sband;
2492 }
2493
2494 /* By default all radios belong to the first group */
2495 data->group = 1;
2496 mutex_init(&data->mutex);
2497
2498 /* Enable frame retransmissions for lossy channels */
2499 hw->max_rates = 4;
2500 hw->max_rate_tries = 11;
2501
2502 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2503 hw->wiphy->n_vendor_commands =
2504 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2505 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2506 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2507
2508 if (param->reg_strict)
2509 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2510 if (param->regd) {
2511 data->regd = param->regd;
2512 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2513 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2514 /* give the regulatory workqueue a chance to run */
2515 schedule_timeout_interruptible(1);
2516 }
2517
2518 if (param->no_vif)
2519 ieee80211_hw_set(hw, NO_AUTO_VIF);
2520
2521 err = ieee80211_register_hw(hw);
2522 if (err < 0) {
2523 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2524 err);
2525 goto failed_hw;
2526 }
2527
2528 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2529
2530 if (param->reg_alpha2) {
2531 data->alpha2[0] = param->reg_alpha2[0];
2532 data->alpha2[1] = param->reg_alpha2[1];
2533 regulatory_hint(hw->wiphy, param->reg_alpha2);
2534 }
2535
2536 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2537 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2538 debugfs_create_file("group", 0666, data->debugfs, data,
2539 &hwsim_fops_group);
2540 if (!data->use_chanctx)
2541 debugfs_create_file("dfs_simulate_radar", 0222,
2542 data->debugfs,
2543 data, &hwsim_simulate_radar);
2544
2545 tasklet_hrtimer_init(&data->beacon_timer,
2546 mac80211_hwsim_beacon,
2547 CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2548
2549 spin_lock_bh(&hwsim_radio_lock);
2550 list_add_tail(&data->list, &hwsim_radios);
2551 spin_unlock_bh(&hwsim_radio_lock);
2552
2553 if (idx > 0)
2554 hwsim_mcast_new_radio(idx, info, param);
2555
2556 return idx;
2557
2558 failed_hw:
2559 device_release_driver(data->dev);
2560 failed_bind:
2561 device_unregister(data->dev);
2562 failed_drvdata:
2563 ieee80211_free_hw(hw);
2564 failed:
2565 return err;
2566 }
2567
2568 static void hwsim_mcast_del_radio(int id, const char *hwname,
2569 struct genl_info *info)
2570 {
2571 struct sk_buff *skb;
2572 void *data;
2573 int ret;
2574
2575 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2576 if (!skb)
2577 return;
2578
2579 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2580 HWSIM_CMD_DEL_RADIO);
2581 if (!data)
2582 goto error;
2583
2584 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2585 if (ret < 0)
2586 goto error;
2587
2588 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2589 hwname);
2590 if (ret < 0)
2591 goto error;
2592
2593 genlmsg_end(skb, data);
2594
2595 hwsim_mcast_config_msg(skb, info);
2596
2597 return;
2598
2599 error:
2600 nlmsg_free(skb);
2601 }
2602
2603 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2604 const char *hwname,
2605 struct genl_info *info)
2606 {
2607 hwsim_mcast_del_radio(data->idx, hwname, info);
2608 debugfs_remove_recursive(data->debugfs);
2609 ieee80211_unregister_hw(data->hw);
2610 device_release_driver(data->dev);
2611 device_unregister(data->dev);
2612 ieee80211_free_hw(data->hw);
2613 }
2614
2615 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2616 struct mac80211_hwsim_data *data,
2617 u32 portid, u32 seq,
2618 struct netlink_callback *cb, int flags)
2619 {
2620 void *hdr;
2621 struct hwsim_new_radio_params param = { };
2622 int res = -EMSGSIZE;
2623
2624 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2625 HWSIM_CMD_GET_RADIO);
2626 if (!hdr)
2627 return -EMSGSIZE;
2628
2629 if (cb)
2630 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2631
2632 if (data->alpha2[0] && data->alpha2[1])
2633 param.reg_alpha2 = data->alpha2;
2634
2635 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2636 REGULATORY_STRICT_REG);
2637 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2638 BIT(NL80211_IFTYPE_P2P_DEVICE));
2639 param.use_chanctx = data->use_chanctx;
2640 param.regd = data->regd;
2641 param.channels = data->channels;
2642 param.hwname = wiphy_name(data->hw->wiphy);
2643
2644 res = append_radio_msg(skb, data->idx, &param);
2645 if (res < 0)
2646 goto out_err;
2647
2648 genlmsg_end(skb, hdr);
2649 return 0;
2650
2651 out_err:
2652 genlmsg_cancel(skb, hdr);
2653 return res;
2654 }
2655
2656 static void mac80211_hwsim_free(void)
2657 {
2658 struct mac80211_hwsim_data *data;
2659
2660 spin_lock_bh(&hwsim_radio_lock);
2661 while ((data = list_first_entry_or_null(&hwsim_radios,
2662 struct mac80211_hwsim_data,
2663 list))) {
2664 list_del(&data->list);
2665 spin_unlock_bh(&hwsim_radio_lock);
2666 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2667 NULL);
2668 spin_lock_bh(&hwsim_radio_lock);
2669 }
2670 spin_unlock_bh(&hwsim_radio_lock);
2671 class_destroy(hwsim_class);
2672 }
2673
2674 static const struct net_device_ops hwsim_netdev_ops = {
2675 .ndo_start_xmit = hwsim_mon_xmit,
2676 .ndo_change_mtu = eth_change_mtu,
2677 .ndo_set_mac_address = eth_mac_addr,
2678 .ndo_validate_addr = eth_validate_addr,
2679 };
2680
2681 static void hwsim_mon_setup(struct net_device *dev)
2682 {
2683 dev->netdev_ops = &hwsim_netdev_ops;
2684 dev->destructor = free_netdev;
2685 ether_setup(dev);
2686 dev->priv_flags |= IFF_NO_QUEUE;
2687 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2688 eth_zero_addr(dev->dev_addr);
2689 dev->dev_addr[0] = 0x12;
2690 }
2691
2692 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2693 {
2694 struct mac80211_hwsim_data *data;
2695 bool _found = false;
2696
2697 spin_lock_bh(&hwsim_radio_lock);
2698 list_for_each_entry(data, &hwsim_radios, list) {
2699 if (mac80211_hwsim_addr_match(data, addr)) {
2700 _found = true;
2701 break;
2702 }
2703 }
2704 spin_unlock_bh(&hwsim_radio_lock);
2705
2706 if (!_found)
2707 return NULL;
2708
2709 return data;
2710 }
2711
2712 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2713 struct genl_info *info)
2714 {
2715
2716 struct ieee80211_hdr *hdr;
2717 struct mac80211_hwsim_data *data2;
2718 struct ieee80211_tx_info *txi;
2719 struct hwsim_tx_rate *tx_attempts;
2720 unsigned long ret_skb_ptr;
2721 struct sk_buff *skb, *tmp;
2722 const u8 *src;
2723 unsigned int hwsim_flags;
2724 int i;
2725 bool found = false;
2726
2727 if (info->snd_portid != wmediumd_portid)
2728 return -EINVAL;
2729
2730 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2731 !info->attrs[HWSIM_ATTR_FLAGS] ||
2732 !info->attrs[HWSIM_ATTR_COOKIE] ||
2733 !info->attrs[HWSIM_ATTR_SIGNAL] ||
2734 !info->attrs[HWSIM_ATTR_TX_INFO])
2735 goto out;
2736
2737 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2738 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2739 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2740
2741 data2 = get_hwsim_data_ref_from_addr(src);
2742 if (!data2)
2743 goto out;
2744
2745 /* look for the skb matching the cookie passed back from user */
2746 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2747 if ((unsigned long)skb == ret_skb_ptr) {
2748 skb_unlink(skb, &data2->pending);
2749 found = true;
2750 break;
2751 }
2752 }
2753
2754 /* not found */
2755 if (!found)
2756 goto out;
2757
2758 /* Tx info received because the frame was broadcasted on user space,
2759 so we get all the necessary info: tx attempts and skb control buff */
2760
2761 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2762 info->attrs[HWSIM_ATTR_TX_INFO]);
2763
2764 /* now send back TX status */
2765 txi = IEEE80211_SKB_CB(skb);
2766
2767 ieee80211_tx_info_clear_status(txi);
2768
2769 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2770 txi->status.rates[i].idx = tx_attempts[i].idx;
2771 txi->status.rates[i].count = tx_attempts[i].count;
2772 /*txi->status.rates[i].flags = 0;*/
2773 }
2774
2775 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2776
2777 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2778 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2779 if (skb->len >= 16) {
2780 hdr = (struct ieee80211_hdr *) skb->data;
2781 mac80211_hwsim_monitor_ack(data2->channel,
2782 hdr->addr2);
2783 }
2784 txi->flags |= IEEE80211_TX_STAT_ACK;
2785 }
2786 ieee80211_tx_status_irqsafe(data2->hw, skb);
2787 return 0;
2788 out:
2789 return -EINVAL;
2790
2791 }
2792
2793 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2794 struct genl_info *info)
2795 {
2796 struct mac80211_hwsim_data *data2;
2797 struct ieee80211_rx_status rx_status;
2798 const u8 *dst;
2799 int frame_data_len;
2800 void *frame_data;
2801 struct sk_buff *skb = NULL;
2802
2803 if (info->snd_portid != wmediumd_portid)
2804 return -EINVAL;
2805
2806 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2807 !info->attrs[HWSIM_ATTR_FRAME] ||
2808 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2809 !info->attrs[HWSIM_ATTR_SIGNAL])
2810 goto out;
2811
2812 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2813 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2814 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2815
2816 /* Allocate new skb here */
2817 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2818 if (skb == NULL)
2819 goto err;
2820
2821 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2822 goto err;
2823
2824 /* Copy the data */
2825 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2826
2827 data2 = get_hwsim_data_ref_from_addr(dst);
2828 if (!data2)
2829 goto out;
2830
2831 /* check if radio is configured properly */
2832
2833 if (data2->idle || !data2->started)
2834 goto out;
2835
2836 /* A frame is received from user space */
2837 memset(&rx_status, 0, sizeof(rx_status));
2838 /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2839 * packets?
2840 */
2841 rx_status.freq = data2->channel->center_freq;
2842 rx_status.band = data2->channel->band;
2843 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2844 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2845
2846 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2847 data2->rx_pkts++;
2848 data2->rx_bytes += skb->len;
2849 ieee80211_rx_irqsafe(data2->hw, skb);
2850
2851 return 0;
2852 err:
2853 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2854 out:
2855 dev_kfree_skb(skb);
2856 return -EINVAL;
2857 }
2858
2859 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2860 struct genl_info *info)
2861 {
2862 struct mac80211_hwsim_data *data;
2863 int chans = 1;
2864
2865 spin_lock_bh(&hwsim_radio_lock);
2866 list_for_each_entry(data, &hwsim_radios, list)
2867 chans = max(chans, data->channels);
2868 spin_unlock_bh(&hwsim_radio_lock);
2869
2870 /* In the future we should revise the userspace API and allow it
2871 * to set a flag that it does support multi-channel, then we can
2872 * let this pass conditionally on the flag.
2873 * For current userspace, prohibit it since it won't work right.
2874 */
2875 if (chans > 1)
2876 return -EOPNOTSUPP;
2877
2878 if (wmediumd_portid)
2879 return -EBUSY;
2880
2881 wmediumd_portid = info->snd_portid;
2882
2883 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2884 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2885
2886 return 0;
2887 }
2888
2889 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2890 {
2891 struct hwsim_new_radio_params param = { 0 };
2892 const char *hwname = NULL;
2893 int ret;
2894
2895 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2896 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2897 param.channels = channels;
2898 param.destroy_on_close =
2899 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2900
2901 if (info->attrs[HWSIM_ATTR_CHANNELS])
2902 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2903
2904 if (info->attrs[HWSIM_ATTR_NO_VIF])
2905 param.no_vif = true;
2906
2907 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
2908 hwname = kasprintf(GFP_KERNEL, "%.*s",
2909 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
2910 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
2911 if (!hwname)
2912 return -ENOMEM;
2913 param.hwname = hwname;
2914 }
2915
2916 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2917 param.use_chanctx = true;
2918 else
2919 param.use_chanctx = (param.channels > 1);
2920
2921 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2922 param.reg_alpha2 =
2923 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2924
2925 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2926 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2927
2928 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom)) {
2929 kfree(hwname);
2930 return -EINVAL;
2931 }
2932 param.regd = hwsim_world_regdom_custom[idx];
2933 }
2934
2935 ret = mac80211_hwsim_new_radio(info, &param);
2936 kfree(hwname);
2937 return ret;
2938 }
2939
2940 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2941 {
2942 struct mac80211_hwsim_data *data;
2943 s64 idx = -1;
2944 const char *hwname = NULL;
2945
2946 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
2947 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2948 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
2949 hwname = kasprintf(GFP_KERNEL, "%.*s",
2950 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
2951 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
2952 if (!hwname)
2953 return -ENOMEM;
2954 } else
2955 return -EINVAL;
2956
2957 spin_lock_bh(&hwsim_radio_lock);
2958 list_for_each_entry(data, &hwsim_radios, list) {
2959 if (idx >= 0) {
2960 if (data->idx != idx)
2961 continue;
2962 } else {
2963 if (!hwname ||
2964 strcmp(hwname, wiphy_name(data->hw->wiphy)))
2965 continue;
2966 }
2967
2968 list_del(&data->list);
2969 spin_unlock_bh(&hwsim_radio_lock);
2970 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2971 info);
2972 kfree(hwname);
2973 return 0;
2974 }
2975 spin_unlock_bh(&hwsim_radio_lock);
2976
2977 kfree(hwname);
2978 return -ENODEV;
2979 }
2980
2981 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
2982 {
2983 struct mac80211_hwsim_data *data;
2984 struct sk_buff *skb;
2985 int idx, res = -ENODEV;
2986
2987 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2988 return -EINVAL;
2989 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2990
2991 spin_lock_bh(&hwsim_radio_lock);
2992 list_for_each_entry(data, &hwsim_radios, list) {
2993 if (data->idx != idx)
2994 continue;
2995
2996 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2997 if (!skb) {
2998 res = -ENOMEM;
2999 goto out_err;
3000 }
3001
3002 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3003 info->snd_seq, NULL, 0);
3004 if (res < 0) {
3005 nlmsg_free(skb);
3006 goto out_err;
3007 }
3008
3009 genlmsg_reply(skb, info);
3010 break;
3011 }
3012
3013 out_err:
3014 spin_unlock_bh(&hwsim_radio_lock);
3015
3016 return res;
3017 }
3018
3019 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3020 struct netlink_callback *cb)
3021 {
3022 int idx = cb->args[0];
3023 struct mac80211_hwsim_data *data = NULL;
3024 int res;
3025
3026 spin_lock_bh(&hwsim_radio_lock);
3027
3028 if (idx == hwsim_radio_idx)
3029 goto done;
3030
3031 list_for_each_entry(data, &hwsim_radios, list) {
3032 if (data->idx < idx)
3033 continue;
3034
3035 res = mac80211_hwsim_get_radio(skb, data,
3036 NETLINK_CB(cb->skb).portid,
3037 cb->nlh->nlmsg_seq, cb,
3038 NLM_F_MULTI);
3039 if (res < 0)
3040 break;
3041
3042 idx = data->idx + 1;
3043 }
3044
3045 cb->args[0] = idx;
3046
3047 done:
3048 spin_unlock_bh(&hwsim_radio_lock);
3049 return skb->len;
3050 }
3051
3052 /* Generic Netlink operations array */
3053 static const struct genl_ops hwsim_ops[] = {
3054 {
3055 .cmd = HWSIM_CMD_REGISTER,
3056 .policy = hwsim_genl_policy,
3057 .doit = hwsim_register_received_nl,
3058 .flags = GENL_ADMIN_PERM,
3059 },
3060 {
3061 .cmd = HWSIM_CMD_FRAME,
3062 .policy = hwsim_genl_policy,
3063 .doit = hwsim_cloned_frame_received_nl,
3064 },
3065 {
3066 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3067 .policy = hwsim_genl_policy,
3068 .doit = hwsim_tx_info_frame_received_nl,
3069 },
3070 {
3071 .cmd = HWSIM_CMD_NEW_RADIO,
3072 .policy = hwsim_genl_policy,
3073 .doit = hwsim_new_radio_nl,
3074 .flags = GENL_ADMIN_PERM,
3075 },
3076 {
3077 .cmd = HWSIM_CMD_DEL_RADIO,
3078 .policy = hwsim_genl_policy,
3079 .doit = hwsim_del_radio_nl,
3080 .flags = GENL_ADMIN_PERM,
3081 },
3082 {
3083 .cmd = HWSIM_CMD_GET_RADIO,
3084 .policy = hwsim_genl_policy,
3085 .doit = hwsim_get_radio_nl,
3086 .dumpit = hwsim_dump_radio_nl,
3087 },
3088 };
3089
3090 static void destroy_radio(struct work_struct *work)
3091 {
3092 struct mac80211_hwsim_data *data =
3093 container_of(work, struct mac80211_hwsim_data, destroy_work);
3094
3095 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3096 }
3097
3098 static void remove_user_radios(u32 portid)
3099 {
3100 struct mac80211_hwsim_data *entry, *tmp;
3101
3102 spin_lock_bh(&hwsim_radio_lock);
3103 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3104 if (entry->destroy_on_close && entry->portid == portid) {
3105 list_del(&entry->list);
3106 INIT_WORK(&entry->destroy_work, destroy_radio);
3107 schedule_work(&entry->destroy_work);
3108 }
3109 }
3110 spin_unlock_bh(&hwsim_radio_lock);
3111 }
3112
3113 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3114 unsigned long state,
3115 void *_notify)
3116 {
3117 struct netlink_notify *notify = _notify;
3118
3119 if (state != NETLINK_URELEASE)
3120 return NOTIFY_DONE;
3121
3122 remove_user_radios(notify->portid);
3123
3124 if (notify->portid == wmediumd_portid) {
3125 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3126 " socket, switching to perfect channel medium\n");
3127 wmediumd_portid = 0;
3128 }
3129 return NOTIFY_DONE;
3130
3131 }
3132
3133 static struct notifier_block hwsim_netlink_notifier = {
3134 .notifier_call = mac80211_hwsim_netlink_notify,
3135 };
3136
3137 static int hwsim_init_netlink(void)
3138 {
3139 int rc;
3140
3141 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3142
3143 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3144 hwsim_ops,
3145 hwsim_mcgrps);
3146 if (rc)
3147 goto failure;
3148
3149 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3150 if (rc) {
3151 genl_unregister_family(&hwsim_genl_family);
3152 goto failure;
3153 }
3154
3155 return 0;
3156
3157 failure:
3158 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3159 return -EINVAL;
3160 }
3161
3162 static void hwsim_exit_netlink(void)
3163 {
3164 /* unregister the notifier */
3165 netlink_unregister_notifier(&hwsim_netlink_notifier);
3166 /* unregister the family */
3167 genl_unregister_family(&hwsim_genl_family);
3168 }
3169
3170 static int __init init_mac80211_hwsim(void)
3171 {
3172 int i, err;
3173
3174 if (radios < 0 || radios > 100)
3175 return -EINVAL;
3176
3177 if (channels < 1)
3178 return -EINVAL;
3179
3180 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3181 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3182 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3183 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3184 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3185 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3186 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3187 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3188 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3189 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3190 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3191 mac80211_hwsim_assign_vif_chanctx;
3192 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3193 mac80211_hwsim_unassign_vif_chanctx;
3194
3195 spin_lock_init(&hwsim_radio_lock);
3196 INIT_LIST_HEAD(&hwsim_radios);
3197
3198 err = platform_driver_register(&mac80211_hwsim_driver);
3199 if (err)
3200 return err;
3201
3202 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3203 if (IS_ERR(hwsim_class)) {
3204 err = PTR_ERR(hwsim_class);
3205 goto out_unregister_driver;
3206 }
3207
3208 err = hwsim_init_netlink();
3209 if (err < 0)
3210 goto out_unregister_driver;
3211
3212 for (i = 0; i < radios; i++) {
3213 struct hwsim_new_radio_params param = { 0 };
3214
3215 param.channels = channels;
3216
3217 switch (regtest) {
3218 case HWSIM_REGTEST_DIFF_COUNTRY:
3219 if (i < ARRAY_SIZE(hwsim_alpha2s))
3220 param.reg_alpha2 = hwsim_alpha2s[i];
3221 break;
3222 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3223 if (!i)
3224 param.reg_alpha2 = hwsim_alpha2s[0];
3225 break;
3226 case HWSIM_REGTEST_STRICT_ALL:
3227 param.reg_strict = true;
3228 case HWSIM_REGTEST_DRIVER_REG_ALL:
3229 param.reg_alpha2 = hwsim_alpha2s[0];
3230 break;
3231 case HWSIM_REGTEST_WORLD_ROAM:
3232 if (i == 0)
3233 param.regd = &hwsim_world_regdom_custom_01;
3234 break;
3235 case HWSIM_REGTEST_CUSTOM_WORLD:
3236 param.regd = &hwsim_world_regdom_custom_01;
3237 break;
3238 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3239 if (i == 0)
3240 param.regd = &hwsim_world_regdom_custom_01;
3241 else if (i == 1)
3242 param.regd = &hwsim_world_regdom_custom_02;
3243 break;
3244 case HWSIM_REGTEST_STRICT_FOLLOW:
3245 if (i == 0) {
3246 param.reg_strict = true;
3247 param.reg_alpha2 = hwsim_alpha2s[0];
3248 }
3249 break;
3250 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3251 if (i == 0) {
3252 param.reg_strict = true;
3253 param.reg_alpha2 = hwsim_alpha2s[0];
3254 } else if (i == 1) {
3255 param.reg_alpha2 = hwsim_alpha2s[1];
3256 }
3257 break;
3258 case HWSIM_REGTEST_ALL:
3259 switch (i) {
3260 case 0:
3261 param.regd = &hwsim_world_regdom_custom_01;
3262 break;
3263 case 1:
3264 param.regd = &hwsim_world_regdom_custom_02;
3265 break;
3266 case 2:
3267 param.reg_alpha2 = hwsim_alpha2s[0];
3268 break;
3269 case 3:
3270 param.reg_alpha2 = hwsim_alpha2s[1];
3271 break;
3272 case 4:
3273 param.reg_strict = true;
3274 param.reg_alpha2 = hwsim_alpha2s[2];
3275 break;
3276 }
3277 break;
3278 default:
3279 break;
3280 }
3281
3282 param.p2p_device = support_p2p_device;
3283 param.use_chanctx = channels > 1;
3284
3285 err = mac80211_hwsim_new_radio(NULL, &param);
3286 if (err < 0)
3287 goto out_free_radios;
3288 }
3289
3290 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3291 hwsim_mon_setup);
3292 if (hwsim_mon == NULL) {
3293 err = -ENOMEM;
3294 goto out_free_radios;
3295 }
3296
3297 rtnl_lock();
3298 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3299 if (err < 0) {
3300 rtnl_unlock();
3301 goto out_free_radios;
3302 }
3303
3304 err = register_netdevice(hwsim_mon);
3305 if (err < 0) {
3306 rtnl_unlock();
3307 goto out_free_mon;
3308 }
3309 rtnl_unlock();
3310
3311 return 0;
3312
3313 out_free_mon:
3314 free_netdev(hwsim_mon);
3315 out_free_radios:
3316 mac80211_hwsim_free();
3317 out_unregister_driver:
3318 platform_driver_unregister(&mac80211_hwsim_driver);
3319 return err;
3320 }
3321 module_init(init_mac80211_hwsim);
3322
3323 static void __exit exit_mac80211_hwsim(void)
3324 {
3325 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3326
3327 hwsim_exit_netlink();
3328
3329 mac80211_hwsim_free();
3330 unregister_netdev(hwsim_mon);
3331 platform_driver_unregister(&mac80211_hwsim_driver);
3332 }
3333 module_exit(exit_mac80211_hwsim);
Linux with added FPC-III support