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Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu...
[deliverable/linux.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/platform_device.h>
29 #include <linux/debugfs.h>
30 #include <linux/module.h>
31 #include <linux/ktime.h>
32 #include <net/genetlink.h>
33 #include "mac80211_hwsim.h"
34
35 #define WARN_QUEUE 100
36 #define MAX_QUEUE 200
37
38 MODULE_AUTHOR("Jouni Malinen");
39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
40 MODULE_LICENSE("GPL");
41
42 static u32 wmediumd_portid;
43
44 static int radios = 2;
45 module_param(radios, int, 0444);
46 MODULE_PARM_DESC(radios, "Number of simulated radios");
47
48 static int channels = 1;
49 module_param(channels, int, 0444);
50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
51
52 static bool paged_rx = false;
53 module_param(paged_rx, bool, 0644);
54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
55
56 static bool rctbl = false;
57 module_param(rctbl, bool, 0444);
58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
59
60 static bool support_p2p_device = true;
61 module_param(support_p2p_device, bool, 0444);
62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
63
64 /**
65 * enum hwsim_regtest - the type of regulatory tests we offer
66 *
67 * These are the different values you can use for the regtest
68 * module parameter. This is useful to help test world roaming
69 * and the driver regulatory_hint() call and combinations of these.
70 * If you want to do specific alpha2 regulatory domain tests simply
71 * use the userspace regulatory request as that will be respected as
72 * well without the need of this module parameter. This is designed
73 * only for testing the driver regulatory request, world roaming
74 * and all possible combinations.
75 *
76 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
77 * this is the default value.
78 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
79 * hint, only one driver regulatory hint will be sent as such the
80 * secondary radios are expected to follow.
81 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
82 * request with all radios reporting the same regulatory domain.
83 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
84 * different regulatory domains requests. Expected behaviour is for
85 * an intersection to occur but each device will still use their
86 * respective regulatory requested domains. Subsequent radios will
87 * use the resulting intersection.
88 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
89 * this by using a custom beacon-capable regulatory domain for the first
90 * radio. All other device world roam.
91 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
92 * domain requests. All radios will adhere to this custom world regulatory
93 * domain.
94 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
95 * domain requests. The first radio will adhere to the first custom world
96 * regulatory domain, the second one to the second custom world regulatory
97 * domain. All other devices will world roam.
98 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
99 * settings, only the first radio will send a regulatory domain request
100 * and use strict settings. The rest of the radios are expected to follow.
101 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
102 * settings. All radios will adhere to this.
103 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
104 * domain settings, combined with secondary driver regulatory domain
105 * settings. The first radio will get a strict regulatory domain setting
106 * using the first driver regulatory request and the second radio will use
107 * non-strict settings using the second driver regulatory request. All
108 * other devices should follow the intersection created between the
109 * first two.
110 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
111 * at least 6 radios for a complete test. We will test in this order:
112 * 1 - driver custom world regulatory domain
113 * 2 - second custom world regulatory domain
114 * 3 - first driver regulatory domain request
115 * 4 - second driver regulatory domain request
116 * 5 - strict regulatory domain settings using the third driver regulatory
117 * domain request
118 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
119 * regulatory requests.
120 */
121 enum hwsim_regtest {
122 HWSIM_REGTEST_DISABLED = 0,
123 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
124 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
125 HWSIM_REGTEST_DIFF_COUNTRY = 3,
126 HWSIM_REGTEST_WORLD_ROAM = 4,
127 HWSIM_REGTEST_CUSTOM_WORLD = 5,
128 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
129 HWSIM_REGTEST_STRICT_FOLLOW = 7,
130 HWSIM_REGTEST_STRICT_ALL = 8,
131 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
132 HWSIM_REGTEST_ALL = 10,
133 };
134
135 /* Set to one of the HWSIM_REGTEST_* values above */
136 static int regtest = HWSIM_REGTEST_DISABLED;
137 module_param(regtest, int, 0444);
138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
139
140 static const char *hwsim_alpha2s[] = {
141 "FI",
142 "AL",
143 "US",
144 "DE",
145 "JP",
146 "AL",
147 };
148
149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
150 .n_reg_rules = 4,
151 .alpha2 = "99",
152 .reg_rules = {
153 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
154 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
155 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
156 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
157 }
158 };
159
160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
161 .n_reg_rules = 2,
162 .alpha2 = "99",
163 .reg_rules = {
164 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
165 REG_RULE(5725-10, 5850+10, 40, 0, 30,
166 NL80211_RRF_NO_IR),
167 }
168 };
169
170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
171 &hwsim_world_regdom_custom_01,
172 &hwsim_world_regdom_custom_02,
173 };
174
175 struct hwsim_vif_priv {
176 u32 magic;
177 u8 bssid[ETH_ALEN];
178 bool assoc;
179 bool bcn_en;
180 u16 aid;
181 };
182
183 #define HWSIM_VIF_MAGIC 0x69537748
184
185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
186 {
187 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
188 WARN(vp->magic != HWSIM_VIF_MAGIC,
189 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
190 vif, vp->magic, vif->addr, vif->type, vif->p2p);
191 }
192
193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
194 {
195 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
196 vp->magic = HWSIM_VIF_MAGIC;
197 }
198
199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
200 {
201 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
202 vp->magic = 0;
203 }
204
205 struct hwsim_sta_priv {
206 u32 magic;
207 };
208
209 #define HWSIM_STA_MAGIC 0x6d537749
210
211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
212 {
213 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
214 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
215 }
216
217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
218 {
219 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
220 sp->magic = HWSIM_STA_MAGIC;
221 }
222
223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
224 {
225 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
226 sp->magic = 0;
227 }
228
229 struct hwsim_chanctx_priv {
230 u32 magic;
231 };
232
233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
234
235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
236 {
237 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
238 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
239 }
240
241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
242 {
243 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
244 cp->magic = HWSIM_CHANCTX_MAGIC;
245 }
246
247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
248 {
249 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
250 cp->magic = 0;
251 }
252
253 static struct class *hwsim_class;
254
255 static struct net_device *hwsim_mon; /* global monitor netdev */
256
257 #define CHAN2G(_freq) { \
258 .band = IEEE80211_BAND_2GHZ, \
259 .center_freq = (_freq), \
260 .hw_value = (_freq), \
261 .max_power = 20, \
262 }
263
264 #define CHAN5G(_freq) { \
265 .band = IEEE80211_BAND_5GHZ, \
266 .center_freq = (_freq), \
267 .hw_value = (_freq), \
268 .max_power = 20, \
269 }
270
271 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
272 CHAN2G(2412), /* Channel 1 */
273 CHAN2G(2417), /* Channel 2 */
274 CHAN2G(2422), /* Channel 3 */
275 CHAN2G(2427), /* Channel 4 */
276 CHAN2G(2432), /* Channel 5 */
277 CHAN2G(2437), /* Channel 6 */
278 CHAN2G(2442), /* Channel 7 */
279 CHAN2G(2447), /* Channel 8 */
280 CHAN2G(2452), /* Channel 9 */
281 CHAN2G(2457), /* Channel 10 */
282 CHAN2G(2462), /* Channel 11 */
283 CHAN2G(2467), /* Channel 12 */
284 CHAN2G(2472), /* Channel 13 */
285 CHAN2G(2484), /* Channel 14 */
286 };
287
288 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
289 CHAN5G(5180), /* Channel 36 */
290 CHAN5G(5200), /* Channel 40 */
291 CHAN5G(5220), /* Channel 44 */
292 CHAN5G(5240), /* Channel 48 */
293
294 CHAN5G(5260), /* Channel 52 */
295 CHAN5G(5280), /* Channel 56 */
296 CHAN5G(5300), /* Channel 60 */
297 CHAN5G(5320), /* Channel 64 */
298
299 CHAN5G(5500), /* Channel 100 */
300 CHAN5G(5520), /* Channel 104 */
301 CHAN5G(5540), /* Channel 108 */
302 CHAN5G(5560), /* Channel 112 */
303 CHAN5G(5580), /* Channel 116 */
304 CHAN5G(5600), /* Channel 120 */
305 CHAN5G(5620), /* Channel 124 */
306 CHAN5G(5640), /* Channel 128 */
307 CHAN5G(5660), /* Channel 132 */
308 CHAN5G(5680), /* Channel 136 */
309 CHAN5G(5700), /* Channel 140 */
310
311 CHAN5G(5745), /* Channel 149 */
312 CHAN5G(5765), /* Channel 153 */
313 CHAN5G(5785), /* Channel 157 */
314 CHAN5G(5805), /* Channel 161 */
315 CHAN5G(5825), /* Channel 165 */
316 };
317
318 static const struct ieee80211_rate hwsim_rates[] = {
319 { .bitrate = 10 },
320 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
321 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
322 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
323 { .bitrate = 60 },
324 { .bitrate = 90 },
325 { .bitrate = 120 },
326 { .bitrate = 180 },
327 { .bitrate = 240 },
328 { .bitrate = 360 },
329 { .bitrate = 480 },
330 { .bitrate = 540 }
331 };
332
333 #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 ieee80211_channel *roc_chan;
499 u32 roc_duration;
500 struct delayed_work roc_start;
501 struct delayed_work roc_done;
502 struct delayed_work hw_scan;
503 struct cfg80211_scan_request *hw_scan_request;
504 struct ieee80211_vif *hw_scan_vif;
505 int scan_chan_idx;
506 u8 scan_addr[ETH_ALEN];
507
508 struct ieee80211_channel *channel;
509 u64 beacon_int /* beacon interval in us */;
510 unsigned int rx_filter;
511 bool started, idle, scanning;
512 struct mutex mutex;
513 struct tasklet_hrtimer beacon_timer;
514 enum ps_mode {
515 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
516 } ps;
517 bool ps_poll_pending;
518 struct dentry *debugfs;
519
520 uintptr_t pending_cookie;
521 struct sk_buff_head pending; /* packets pending */
522 /*
523 * Only radios in the same group can communicate together (the
524 * channel has to match too). Each bit represents a group. A
525 * radio can be in more than one group.
526 */
527 u64 group;
528
529 int power_level;
530
531 /* difference between this hw's clock and the real clock, in usecs */
532 s64 tsf_offset;
533 s64 bcn_delta;
534 /* absolute beacon transmission time. Used to cover up "tx" delay. */
535 u64 abs_bcn_ts;
536
537 /* Stats */
538 u64 tx_pkts;
539 u64 rx_pkts;
540 u64 tx_bytes;
541 u64 rx_bytes;
542 u64 tx_dropped;
543 u64 tx_failed;
544 };
545
546
547 struct hwsim_radiotap_hdr {
548 struct ieee80211_radiotap_header hdr;
549 __le64 rt_tsft;
550 u8 rt_flags;
551 u8 rt_rate;
552 __le16 rt_channel;
553 __le16 rt_chbitmask;
554 } __packed;
555
556 struct hwsim_radiotap_ack_hdr {
557 struct ieee80211_radiotap_header hdr;
558 u8 rt_flags;
559 u8 pad;
560 __le16 rt_channel;
561 __le16 rt_chbitmask;
562 } __packed;
563
564 /* MAC80211_HWSIM netlinf family */
565 static struct genl_family hwsim_genl_family = {
566 .id = GENL_ID_GENERATE,
567 .hdrsize = 0,
568 .name = "MAC80211_HWSIM",
569 .version = 1,
570 .maxattr = HWSIM_ATTR_MAX,
571 };
572
573 enum hwsim_multicast_groups {
574 HWSIM_MCGRP_CONFIG,
575 };
576
577 static const struct genl_multicast_group hwsim_mcgrps[] = {
578 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
579 };
580
581 /* MAC80211_HWSIM netlink policy */
582
583 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
584 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
585 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
586 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
587 .len = IEEE80211_MAX_DATA_LEN },
588 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
589 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
590 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
591 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
592 .len = IEEE80211_TX_MAX_RATES *
593 sizeof(struct hwsim_tx_rate)},
594 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
595 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
596 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
597 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
598 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
599 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
600 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
601 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
602 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
603 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
604 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
605 };
606
607 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
608 struct sk_buff *skb,
609 struct ieee80211_channel *chan);
610
611 /* sysfs attributes */
612 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
613 {
614 struct mac80211_hwsim_data *data = dat;
615 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
616 struct sk_buff *skb;
617 struct ieee80211_pspoll *pspoll;
618
619 if (!vp->assoc)
620 return;
621
622 wiphy_debug(data->hw->wiphy,
623 "%s: send PS-Poll to %pM for aid %d\n",
624 __func__, vp->bssid, vp->aid);
625
626 skb = dev_alloc_skb(sizeof(*pspoll));
627 if (!skb)
628 return;
629 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
630 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
631 IEEE80211_STYPE_PSPOLL |
632 IEEE80211_FCTL_PM);
633 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
634 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
635 memcpy(pspoll->ta, mac, ETH_ALEN);
636
637 rcu_read_lock();
638 mac80211_hwsim_tx_frame(data->hw, skb,
639 rcu_dereference(vif->chanctx_conf)->def.chan);
640 rcu_read_unlock();
641 }
642
643 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
644 struct ieee80211_vif *vif, int ps)
645 {
646 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
647 struct sk_buff *skb;
648 struct ieee80211_hdr *hdr;
649
650 if (!vp->assoc)
651 return;
652
653 wiphy_debug(data->hw->wiphy,
654 "%s: send data::nullfunc to %pM ps=%d\n",
655 __func__, vp->bssid, ps);
656
657 skb = dev_alloc_skb(sizeof(*hdr));
658 if (!skb)
659 return;
660 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
661 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
662 IEEE80211_STYPE_NULLFUNC |
663 (ps ? IEEE80211_FCTL_PM : 0));
664 hdr->duration_id = cpu_to_le16(0);
665 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
666 memcpy(hdr->addr2, mac, ETH_ALEN);
667 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
668
669 rcu_read_lock();
670 mac80211_hwsim_tx_frame(data->hw, skb,
671 rcu_dereference(vif->chanctx_conf)->def.chan);
672 rcu_read_unlock();
673 }
674
675
676 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
677 struct ieee80211_vif *vif)
678 {
679 struct mac80211_hwsim_data *data = dat;
680 hwsim_send_nullfunc(data, mac, vif, 1);
681 }
682
683 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
684 struct ieee80211_vif *vif)
685 {
686 struct mac80211_hwsim_data *data = dat;
687 hwsim_send_nullfunc(data, mac, vif, 0);
688 }
689
690 static int hwsim_fops_ps_read(void *dat, u64 *val)
691 {
692 struct mac80211_hwsim_data *data = dat;
693 *val = data->ps;
694 return 0;
695 }
696
697 static int hwsim_fops_ps_write(void *dat, u64 val)
698 {
699 struct mac80211_hwsim_data *data = dat;
700 enum ps_mode old_ps;
701
702 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
703 val != PS_MANUAL_POLL)
704 return -EINVAL;
705
706 old_ps = data->ps;
707 data->ps = val;
708
709 local_bh_disable();
710 if (val == PS_MANUAL_POLL) {
711 ieee80211_iterate_active_interfaces_atomic(
712 data->hw, IEEE80211_IFACE_ITER_NORMAL,
713 hwsim_send_ps_poll, data);
714 data->ps_poll_pending = true;
715 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
716 ieee80211_iterate_active_interfaces_atomic(
717 data->hw, IEEE80211_IFACE_ITER_NORMAL,
718 hwsim_send_nullfunc_ps, data);
719 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
720 ieee80211_iterate_active_interfaces_atomic(
721 data->hw, IEEE80211_IFACE_ITER_NORMAL,
722 hwsim_send_nullfunc_no_ps, data);
723 }
724 local_bh_enable();
725
726 return 0;
727 }
728
729 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
730 "%llu\n");
731
732 static int hwsim_write_simulate_radar(void *dat, u64 val)
733 {
734 struct mac80211_hwsim_data *data = dat;
735
736 ieee80211_radar_detected(data->hw);
737
738 return 0;
739 }
740
741 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
742 hwsim_write_simulate_radar, "%llu\n");
743
744 static int hwsim_fops_group_read(void *dat, u64 *val)
745 {
746 struct mac80211_hwsim_data *data = dat;
747 *val = data->group;
748 return 0;
749 }
750
751 static int hwsim_fops_group_write(void *dat, u64 val)
752 {
753 struct mac80211_hwsim_data *data = dat;
754 data->group = val;
755 return 0;
756 }
757
758 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
759 hwsim_fops_group_read, hwsim_fops_group_write,
760 "%llx\n");
761
762 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
763 struct net_device *dev)
764 {
765 /* TODO: allow packet injection */
766 dev_kfree_skb(skb);
767 return NETDEV_TX_OK;
768 }
769
770 static inline u64 mac80211_hwsim_get_tsf_raw(void)
771 {
772 return ktime_to_us(ktime_get_real());
773 }
774
775 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
776 {
777 u64 now = mac80211_hwsim_get_tsf_raw();
778 return cpu_to_le64(now + data->tsf_offset);
779 }
780
781 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
782 struct ieee80211_vif *vif)
783 {
784 struct mac80211_hwsim_data *data = hw->priv;
785 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
786 }
787
788 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
789 struct ieee80211_vif *vif, u64 tsf)
790 {
791 struct mac80211_hwsim_data *data = hw->priv;
792 u64 now = mac80211_hwsim_get_tsf(hw, vif);
793 u32 bcn_int = data->beacon_int;
794 u64 delta = abs(tsf - now);
795
796 /* adjust after beaconing with new timestamp at old TBTT */
797 if (tsf > now) {
798 data->tsf_offset += delta;
799 data->bcn_delta = do_div(delta, bcn_int);
800 } else {
801 data->tsf_offset -= delta;
802 data->bcn_delta = -do_div(delta, bcn_int);
803 }
804 }
805
806 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
807 struct sk_buff *tx_skb,
808 struct ieee80211_channel *chan)
809 {
810 struct mac80211_hwsim_data *data = hw->priv;
811 struct sk_buff *skb;
812 struct hwsim_radiotap_hdr *hdr;
813 u16 flags;
814 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
815 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
816
817 if (WARN_ON(!txrate))
818 return;
819
820 if (!netif_running(hwsim_mon))
821 return;
822
823 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
824 if (skb == NULL)
825 return;
826
827 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
828 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
829 hdr->hdr.it_pad = 0;
830 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
831 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
832 (1 << IEEE80211_RADIOTAP_RATE) |
833 (1 << IEEE80211_RADIOTAP_TSFT) |
834 (1 << IEEE80211_RADIOTAP_CHANNEL));
835 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
836 hdr->rt_flags = 0;
837 hdr->rt_rate = txrate->bitrate / 5;
838 hdr->rt_channel = cpu_to_le16(chan->center_freq);
839 flags = IEEE80211_CHAN_2GHZ;
840 if (txrate->flags & IEEE80211_RATE_ERP_G)
841 flags |= IEEE80211_CHAN_OFDM;
842 else
843 flags |= IEEE80211_CHAN_CCK;
844 hdr->rt_chbitmask = cpu_to_le16(flags);
845
846 skb->dev = hwsim_mon;
847 skb_set_mac_header(skb, 0);
848 skb->ip_summed = CHECKSUM_UNNECESSARY;
849 skb->pkt_type = PACKET_OTHERHOST;
850 skb->protocol = htons(ETH_P_802_2);
851 memset(skb->cb, 0, sizeof(skb->cb));
852 netif_rx(skb);
853 }
854
855
856 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
857 const u8 *addr)
858 {
859 struct sk_buff *skb;
860 struct hwsim_radiotap_ack_hdr *hdr;
861 u16 flags;
862 struct ieee80211_hdr *hdr11;
863
864 if (!netif_running(hwsim_mon))
865 return;
866
867 skb = dev_alloc_skb(100);
868 if (skb == NULL)
869 return;
870
871 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
872 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
873 hdr->hdr.it_pad = 0;
874 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
875 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
876 (1 << IEEE80211_RADIOTAP_CHANNEL));
877 hdr->rt_flags = 0;
878 hdr->pad = 0;
879 hdr->rt_channel = cpu_to_le16(chan->center_freq);
880 flags = IEEE80211_CHAN_2GHZ;
881 hdr->rt_chbitmask = cpu_to_le16(flags);
882
883 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
884 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
885 IEEE80211_STYPE_ACK);
886 hdr11->duration_id = cpu_to_le16(0);
887 memcpy(hdr11->addr1, addr, ETH_ALEN);
888
889 skb->dev = hwsim_mon;
890 skb_set_mac_header(skb, 0);
891 skb->ip_summed = CHECKSUM_UNNECESSARY;
892 skb->pkt_type = PACKET_OTHERHOST;
893 skb->protocol = htons(ETH_P_802_2);
894 memset(skb->cb, 0, sizeof(skb->cb));
895 netif_rx(skb);
896 }
897
898 struct mac80211_hwsim_addr_match_data {
899 u8 addr[ETH_ALEN];
900 bool ret;
901 };
902
903 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
904 struct ieee80211_vif *vif)
905 {
906 struct mac80211_hwsim_addr_match_data *md = data;
907
908 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
909 md->ret = true;
910 }
911
912 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
913 const u8 *addr)
914 {
915 struct mac80211_hwsim_addr_match_data md = {
916 .ret = false,
917 };
918
919 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
920 return true;
921
922 memcpy(md.addr, addr, ETH_ALEN);
923
924 ieee80211_iterate_active_interfaces_atomic(data->hw,
925 IEEE80211_IFACE_ITER_NORMAL,
926 mac80211_hwsim_addr_iter,
927 &md);
928
929 return md.ret;
930 }
931
932 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
933 struct sk_buff *skb)
934 {
935 switch (data->ps) {
936 case PS_DISABLED:
937 return true;
938 case PS_ENABLED:
939 return false;
940 case PS_AUTO_POLL:
941 /* TODO: accept (some) Beacons by default and other frames only
942 * if pending PS-Poll has been sent */
943 return true;
944 case PS_MANUAL_POLL:
945 /* Allow unicast frames to own address if there is a pending
946 * PS-Poll */
947 if (data->ps_poll_pending &&
948 mac80211_hwsim_addr_match(data, skb->data + 4)) {
949 data->ps_poll_pending = false;
950 return true;
951 }
952 return false;
953 }
954
955 return true;
956 }
957
958 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
959 struct sk_buff *my_skb,
960 int dst_portid)
961 {
962 struct sk_buff *skb;
963 struct mac80211_hwsim_data *data = hw->priv;
964 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
965 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
966 void *msg_head;
967 unsigned int hwsim_flags = 0;
968 int i;
969 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
970 uintptr_t cookie;
971
972 if (data->ps != PS_DISABLED)
973 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
974 /* If the queue contains MAX_QUEUE skb's drop some */
975 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
976 /* Droping until WARN_QUEUE level */
977 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
978 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
979 data->tx_dropped++;
980 }
981 }
982
983 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
984 if (skb == NULL)
985 goto nla_put_failure;
986
987 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
988 HWSIM_CMD_FRAME);
989 if (msg_head == NULL) {
990 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
991 goto nla_put_failure;
992 }
993
994 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER, ETH_ALEN, hdr->addr2))
995 goto nla_put_failure;
996
997 /* We get the skb->data */
998 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
999 goto nla_put_failure;
1000
1001 /* We get the flags for this transmission, and we translate them to
1002 wmediumd flags */
1003
1004 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1005 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1006
1007 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1008 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1009
1010 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1011 goto nla_put_failure;
1012
1013 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1014 goto nla_put_failure;
1015
1016 /* We get the tx control (rate and retries) info*/
1017
1018 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1019 tx_attempts[i].idx = info->status.rates[i].idx;
1020 tx_attempts[i].count = info->status.rates[i].count;
1021 }
1022
1023 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1024 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1025 tx_attempts))
1026 goto nla_put_failure;
1027
1028 /* We create a cookie to identify this skb */
1029 data->pending_cookie++;
1030 cookie = data->pending_cookie;
1031 info->rate_driver_data[0] = (void *)cookie;
1032 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, cookie))
1033 goto nla_put_failure;
1034
1035 genlmsg_end(skb, msg_head);
1036 if (genlmsg_unicast(&init_net, skb, dst_portid))
1037 goto err_free_txskb;
1038
1039 /* Enqueue the packet */
1040 skb_queue_tail(&data->pending, my_skb);
1041 data->tx_pkts++;
1042 data->tx_bytes += my_skb->len;
1043 return;
1044
1045 nla_put_failure:
1046 nlmsg_free(skb);
1047 err_free_txskb:
1048 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1049 ieee80211_free_txskb(hw, my_skb);
1050 data->tx_failed++;
1051 }
1052
1053 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1054 struct ieee80211_channel *c2)
1055 {
1056 if (!c1 || !c2)
1057 return false;
1058
1059 return c1->center_freq == c2->center_freq;
1060 }
1061
1062 struct tx_iter_data {
1063 struct ieee80211_channel *channel;
1064 bool receive;
1065 };
1066
1067 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1068 struct ieee80211_vif *vif)
1069 {
1070 struct tx_iter_data *data = _data;
1071
1072 if (!vif->chanctx_conf)
1073 return;
1074
1075 if (!hwsim_chans_compat(data->channel,
1076 rcu_dereference(vif->chanctx_conf)->def.chan))
1077 return;
1078
1079 data->receive = true;
1080 }
1081
1082 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1083 {
1084 /*
1085 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1086 * e.g. like this:
1087 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1088 * (but you should use a valid OUI, not that)
1089 *
1090 * If anyone wants to 'donate' a radiotap OUI/subns code
1091 * please send a patch removing this #ifdef and changing
1092 * the values accordingly.
1093 */
1094 #ifdef HWSIM_RADIOTAP_OUI
1095 struct ieee80211_vendor_radiotap *rtap;
1096
1097 /*
1098 * Note that this code requires the headroom in the SKB
1099 * that was allocated earlier.
1100 */
1101 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1102 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1103 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1104 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1105 rtap->subns = 127;
1106
1107 /*
1108 * Radiotap vendor namespaces can (and should) also be
1109 * split into fields by using the standard radiotap
1110 * presence bitmap mechanism. Use just BIT(0) here for
1111 * the presence bitmap.
1112 */
1113 rtap->present = BIT(0);
1114 /* We have 8 bytes of (dummy) data */
1115 rtap->len = 8;
1116 /* For testing, also require it to be aligned */
1117 rtap->align = 8;
1118 /* And also test that padding works, 4 bytes */
1119 rtap->pad = 4;
1120 /* push the data */
1121 memcpy(rtap->data, "ABCDEFGH", 8);
1122 /* make sure to clear padding, mac80211 doesn't */
1123 memset(rtap->data + 8, 0, 4);
1124
1125 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1126 #endif
1127 }
1128
1129 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1130 struct sk_buff *skb,
1131 struct ieee80211_channel *chan)
1132 {
1133 struct mac80211_hwsim_data *data = hw->priv, *data2;
1134 bool ack = false;
1135 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1136 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1137 struct ieee80211_rx_status rx_status;
1138 u64 now;
1139
1140 memset(&rx_status, 0, sizeof(rx_status));
1141 rx_status.flag |= RX_FLAG_MACTIME_START;
1142 rx_status.freq = chan->center_freq;
1143 rx_status.band = chan->band;
1144 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1145 rx_status.rate_idx =
1146 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1147 rx_status.vht_nss =
1148 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1149 rx_status.flag |= RX_FLAG_VHT;
1150 } else {
1151 rx_status.rate_idx = info->control.rates[0].idx;
1152 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1153 rx_status.flag |= RX_FLAG_HT;
1154 }
1155 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1156 rx_status.flag |= RX_FLAG_40MHZ;
1157 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1158 rx_status.flag |= RX_FLAG_SHORT_GI;
1159 /* TODO: simulate real signal strength (and optional packet loss) */
1160 rx_status.signal = data->power_level - 50;
1161
1162 if (data->ps != PS_DISABLED)
1163 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1164
1165 /* release the skb's source info */
1166 skb_orphan(skb);
1167 skb_dst_drop(skb);
1168 skb->mark = 0;
1169 secpath_reset(skb);
1170 nf_reset(skb);
1171
1172 /*
1173 * Get absolute mactime here so all HWs RX at the "same time", and
1174 * absolute TX time for beacon mactime so the timestamp matches.
1175 * Giving beacons a different mactime than non-beacons looks messy, but
1176 * it helps the Toffset be exact and a ~10us mactime discrepancy
1177 * probably doesn't really matter.
1178 */
1179 if (ieee80211_is_beacon(hdr->frame_control) ||
1180 ieee80211_is_probe_resp(hdr->frame_control))
1181 now = data->abs_bcn_ts;
1182 else
1183 now = mac80211_hwsim_get_tsf_raw();
1184
1185 /* Copy skb to all enabled radios that are on the current frequency */
1186 spin_lock(&hwsim_radio_lock);
1187 list_for_each_entry(data2, &hwsim_radios, list) {
1188 struct sk_buff *nskb;
1189 struct tx_iter_data tx_iter_data = {
1190 .receive = false,
1191 .channel = chan,
1192 };
1193
1194 if (data == data2)
1195 continue;
1196
1197 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1198 !hwsim_ps_rx_ok(data2, skb))
1199 continue;
1200
1201 if (!(data->group & data2->group))
1202 continue;
1203
1204 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1205 !hwsim_chans_compat(chan, data2->channel)) {
1206 ieee80211_iterate_active_interfaces_atomic(
1207 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1208 mac80211_hwsim_tx_iter, &tx_iter_data);
1209 if (!tx_iter_data.receive)
1210 continue;
1211 }
1212
1213 /*
1214 * reserve some space for our vendor and the normal
1215 * radiotap header, since we're copying anyway
1216 */
1217 if (skb->len < PAGE_SIZE && paged_rx) {
1218 struct page *page = alloc_page(GFP_ATOMIC);
1219
1220 if (!page)
1221 continue;
1222
1223 nskb = dev_alloc_skb(128);
1224 if (!nskb) {
1225 __free_page(page);
1226 continue;
1227 }
1228
1229 memcpy(page_address(page), skb->data, skb->len);
1230 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1231 } else {
1232 nskb = skb_copy(skb, GFP_ATOMIC);
1233 if (!nskb)
1234 continue;
1235 }
1236
1237 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1238 ack = true;
1239
1240 rx_status.mactime = now + data2->tsf_offset;
1241
1242 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1243
1244 mac80211_hwsim_add_vendor_rtap(nskb);
1245
1246 data2->rx_pkts++;
1247 data2->rx_bytes += nskb->len;
1248 ieee80211_rx_irqsafe(data2->hw, nskb);
1249 }
1250 spin_unlock(&hwsim_radio_lock);
1251
1252 return ack;
1253 }
1254
1255 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1256 struct ieee80211_tx_control *control,
1257 struct sk_buff *skb)
1258 {
1259 struct mac80211_hwsim_data *data = hw->priv;
1260 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1261 struct ieee80211_hdr *hdr = (void *)skb->data;
1262 struct ieee80211_chanctx_conf *chanctx_conf;
1263 struct ieee80211_channel *channel;
1264 bool ack;
1265 u32 _portid;
1266
1267 if (WARN_ON(skb->len < 10)) {
1268 /* Should not happen; just a sanity check for addr1 use */
1269 ieee80211_free_txskb(hw, skb);
1270 return;
1271 }
1272
1273 if (!data->use_chanctx) {
1274 channel = data->channel;
1275 } else if (txi->hw_queue == 4) {
1276 channel = data->tmp_chan;
1277 } else {
1278 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1279 if (chanctx_conf)
1280 channel = chanctx_conf->def.chan;
1281 else
1282 channel = NULL;
1283 }
1284
1285 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1286 ieee80211_free_txskb(hw, skb);
1287 return;
1288 }
1289
1290 if (data->idle && !data->tmp_chan) {
1291 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1292 ieee80211_free_txskb(hw, skb);
1293 return;
1294 }
1295
1296 if (txi->control.vif)
1297 hwsim_check_magic(txi->control.vif);
1298 if (control->sta)
1299 hwsim_check_sta_magic(control->sta);
1300
1301 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1302 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1303 txi->control.rates,
1304 ARRAY_SIZE(txi->control.rates));
1305
1306 txi->rate_driver_data[0] = channel;
1307
1308 if (skb->len >= 24 + 8 &&
1309 ieee80211_is_probe_resp(hdr->frame_control)) {
1310 /* fake header transmission time */
1311 struct ieee80211_mgmt *mgmt;
1312 struct ieee80211_rate *txrate;
1313 u64 ts;
1314
1315 mgmt = (struct ieee80211_mgmt *)skb->data;
1316 txrate = ieee80211_get_tx_rate(hw, txi);
1317 ts = mac80211_hwsim_get_tsf_raw();
1318 mgmt->u.probe_resp.timestamp =
1319 cpu_to_le64(ts + data->tsf_offset +
1320 24 * 8 * 10 / txrate->bitrate);
1321 }
1322
1323 mac80211_hwsim_monitor_rx(hw, skb, channel);
1324
1325 /* wmediumd mode check */
1326 _portid = ACCESS_ONCE(wmediumd_portid);
1327
1328 if (_portid)
1329 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1330
1331 /* NO wmediumd detected, perfect medium simulation */
1332 data->tx_pkts++;
1333 data->tx_bytes += skb->len;
1334 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1335
1336 if (ack && skb->len >= 16) {
1337 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1338 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1339 }
1340
1341 ieee80211_tx_info_clear_status(txi);
1342
1343 /* frame was transmitted at most favorable rate at first attempt */
1344 txi->control.rates[0].count = 1;
1345 txi->control.rates[1].idx = -1;
1346
1347 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1348 txi->flags |= IEEE80211_TX_STAT_ACK;
1349 ieee80211_tx_status_irqsafe(hw, skb);
1350 }
1351
1352
1353 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1354 {
1355 struct mac80211_hwsim_data *data = hw->priv;
1356 wiphy_debug(hw->wiphy, "%s\n", __func__);
1357 data->started = true;
1358 return 0;
1359 }
1360
1361
1362 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1363 {
1364 struct mac80211_hwsim_data *data = hw->priv;
1365 data->started = false;
1366 tasklet_hrtimer_cancel(&data->beacon_timer);
1367 wiphy_debug(hw->wiphy, "%s\n", __func__);
1368 }
1369
1370
1371 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1372 struct ieee80211_vif *vif)
1373 {
1374 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1375 __func__, ieee80211_vif_type_p2p(vif),
1376 vif->addr);
1377 hwsim_set_magic(vif);
1378
1379 vif->cab_queue = 0;
1380 vif->hw_queue[IEEE80211_AC_VO] = 0;
1381 vif->hw_queue[IEEE80211_AC_VI] = 1;
1382 vif->hw_queue[IEEE80211_AC_BE] = 2;
1383 vif->hw_queue[IEEE80211_AC_BK] = 3;
1384
1385 return 0;
1386 }
1387
1388
1389 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1390 struct ieee80211_vif *vif,
1391 enum nl80211_iftype newtype,
1392 bool newp2p)
1393 {
1394 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1395 wiphy_debug(hw->wiphy,
1396 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1397 __func__, ieee80211_vif_type_p2p(vif),
1398 newtype, vif->addr);
1399 hwsim_check_magic(vif);
1400
1401 /*
1402 * interface may change from non-AP to AP in
1403 * which case this needs to be set up again
1404 */
1405 vif->cab_queue = 0;
1406
1407 return 0;
1408 }
1409
1410 static void mac80211_hwsim_remove_interface(
1411 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1412 {
1413 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1414 __func__, ieee80211_vif_type_p2p(vif),
1415 vif->addr);
1416 hwsim_check_magic(vif);
1417 hwsim_clear_magic(vif);
1418 }
1419
1420 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1421 struct sk_buff *skb,
1422 struct ieee80211_channel *chan)
1423 {
1424 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1425
1426 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1427 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1428 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1429 txi->control.rates,
1430 ARRAY_SIZE(txi->control.rates));
1431 }
1432
1433 mac80211_hwsim_monitor_rx(hw, skb, chan);
1434
1435 if (_pid)
1436 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1437
1438 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1439 dev_kfree_skb(skb);
1440 }
1441
1442 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1443 struct ieee80211_vif *vif)
1444 {
1445 struct mac80211_hwsim_data *data = arg;
1446 struct ieee80211_hw *hw = data->hw;
1447 struct ieee80211_tx_info *info;
1448 struct ieee80211_rate *txrate;
1449 struct ieee80211_mgmt *mgmt;
1450 struct sk_buff *skb;
1451
1452 hwsim_check_magic(vif);
1453
1454 if (vif->type != NL80211_IFTYPE_AP &&
1455 vif->type != NL80211_IFTYPE_MESH_POINT &&
1456 vif->type != NL80211_IFTYPE_ADHOC)
1457 return;
1458
1459 skb = ieee80211_beacon_get(hw, vif);
1460 if (skb == NULL)
1461 return;
1462 info = IEEE80211_SKB_CB(skb);
1463 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1464 ieee80211_get_tx_rates(vif, NULL, skb,
1465 info->control.rates,
1466 ARRAY_SIZE(info->control.rates));
1467
1468 txrate = ieee80211_get_tx_rate(hw, info);
1469
1470 mgmt = (struct ieee80211_mgmt *) skb->data;
1471 /* fake header transmission time */
1472 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1473 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1474 data->tsf_offset +
1475 24 * 8 * 10 / txrate->bitrate);
1476
1477 mac80211_hwsim_tx_frame(hw, skb,
1478 rcu_dereference(vif->chanctx_conf)->def.chan);
1479
1480 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1481 ieee80211_csa_finish(vif);
1482 }
1483
1484 static enum hrtimer_restart
1485 mac80211_hwsim_beacon(struct hrtimer *timer)
1486 {
1487 struct mac80211_hwsim_data *data =
1488 container_of(timer, struct mac80211_hwsim_data,
1489 beacon_timer.timer);
1490 struct ieee80211_hw *hw = data->hw;
1491 u64 bcn_int = data->beacon_int;
1492 ktime_t next_bcn;
1493
1494 if (!data->started)
1495 goto out;
1496
1497 ieee80211_iterate_active_interfaces_atomic(
1498 hw, IEEE80211_IFACE_ITER_NORMAL,
1499 mac80211_hwsim_beacon_tx, data);
1500
1501 /* beacon at new TBTT + beacon interval */
1502 if (data->bcn_delta) {
1503 bcn_int -= data->bcn_delta;
1504 data->bcn_delta = 0;
1505 }
1506
1507 next_bcn = ktime_add(hrtimer_get_expires(timer),
1508 ns_to_ktime(bcn_int * 1000));
1509 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1510 out:
1511 return HRTIMER_NORESTART;
1512 }
1513
1514 static const char * const hwsim_chanwidths[] = {
1515 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1516 [NL80211_CHAN_WIDTH_20] = "ht20",
1517 [NL80211_CHAN_WIDTH_40] = "ht40",
1518 [NL80211_CHAN_WIDTH_80] = "vht80",
1519 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1520 [NL80211_CHAN_WIDTH_160] = "vht160",
1521 };
1522
1523 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1524 {
1525 struct mac80211_hwsim_data *data = hw->priv;
1526 struct ieee80211_conf *conf = &hw->conf;
1527 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1528 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1529 [IEEE80211_SMPS_OFF] = "off",
1530 [IEEE80211_SMPS_STATIC] = "static",
1531 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1532 };
1533
1534 if (conf->chandef.chan)
1535 wiphy_debug(hw->wiphy,
1536 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1537 __func__,
1538 conf->chandef.chan->center_freq,
1539 conf->chandef.center_freq1,
1540 conf->chandef.center_freq2,
1541 hwsim_chanwidths[conf->chandef.width],
1542 !!(conf->flags & IEEE80211_CONF_IDLE),
1543 !!(conf->flags & IEEE80211_CONF_PS),
1544 smps_modes[conf->smps_mode]);
1545 else
1546 wiphy_debug(hw->wiphy,
1547 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1548 __func__,
1549 !!(conf->flags & IEEE80211_CONF_IDLE),
1550 !!(conf->flags & IEEE80211_CONF_PS),
1551 smps_modes[conf->smps_mode]);
1552
1553 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1554
1555 data->channel = conf->chandef.chan;
1556
1557 WARN_ON(data->channel && data->use_chanctx);
1558
1559 data->power_level = conf->power_level;
1560 if (!data->started || !data->beacon_int)
1561 tasklet_hrtimer_cancel(&data->beacon_timer);
1562 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1563 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1564 u32 bcn_int = data->beacon_int;
1565 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1566
1567 tasklet_hrtimer_start(&data->beacon_timer,
1568 ns_to_ktime(until_tbtt * 1000),
1569 HRTIMER_MODE_REL);
1570 }
1571
1572 return 0;
1573 }
1574
1575
1576 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1577 unsigned int changed_flags,
1578 unsigned int *total_flags,u64 multicast)
1579 {
1580 struct mac80211_hwsim_data *data = hw->priv;
1581
1582 wiphy_debug(hw->wiphy, "%s\n", __func__);
1583
1584 data->rx_filter = 0;
1585 if (*total_flags & FIF_ALLMULTI)
1586 data->rx_filter |= FIF_ALLMULTI;
1587
1588 *total_flags = data->rx_filter;
1589 }
1590
1591 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1592 struct ieee80211_vif *vif)
1593 {
1594 unsigned int *count = data;
1595 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1596
1597 if (vp->bcn_en)
1598 (*count)++;
1599 }
1600
1601 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1602 struct ieee80211_vif *vif,
1603 struct ieee80211_bss_conf *info,
1604 u32 changed)
1605 {
1606 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1607 struct mac80211_hwsim_data *data = hw->priv;
1608
1609 hwsim_check_magic(vif);
1610
1611 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1612 __func__, changed, vif->addr);
1613
1614 if (changed & BSS_CHANGED_BSSID) {
1615 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1616 __func__, info->bssid);
1617 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1618 }
1619
1620 if (changed & BSS_CHANGED_ASSOC) {
1621 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1622 info->assoc, info->aid);
1623 vp->assoc = info->assoc;
1624 vp->aid = info->aid;
1625 }
1626
1627 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1628 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1629 info->enable_beacon, info->beacon_int);
1630 vp->bcn_en = info->enable_beacon;
1631 if (data->started &&
1632 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1633 info->enable_beacon) {
1634 u64 tsf, until_tbtt;
1635 u32 bcn_int;
1636 data->beacon_int = info->beacon_int * 1024;
1637 tsf = mac80211_hwsim_get_tsf(hw, vif);
1638 bcn_int = data->beacon_int;
1639 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1640 tasklet_hrtimer_start(&data->beacon_timer,
1641 ns_to_ktime(until_tbtt * 1000),
1642 HRTIMER_MODE_REL);
1643 } else if (!info->enable_beacon) {
1644 unsigned int count = 0;
1645 ieee80211_iterate_active_interfaces_atomic(
1646 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1647 mac80211_hwsim_bcn_en_iter, &count);
1648 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1649 count);
1650 if (count == 0) {
1651 tasklet_hrtimer_cancel(&data->beacon_timer);
1652 data->beacon_int = 0;
1653 }
1654 }
1655 }
1656
1657 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1658 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1659 info->use_cts_prot);
1660 }
1661
1662 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1663 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1664 info->use_short_preamble);
1665 }
1666
1667 if (changed & BSS_CHANGED_ERP_SLOT) {
1668 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1669 }
1670
1671 if (changed & BSS_CHANGED_HT) {
1672 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1673 info->ht_operation_mode);
1674 }
1675
1676 if (changed & BSS_CHANGED_BASIC_RATES) {
1677 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1678 (unsigned long long) info->basic_rates);
1679 }
1680
1681 if (changed & BSS_CHANGED_TXPOWER)
1682 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1683 }
1684
1685 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1686 struct ieee80211_vif *vif,
1687 struct ieee80211_sta *sta)
1688 {
1689 hwsim_check_magic(vif);
1690 hwsim_set_sta_magic(sta);
1691
1692 return 0;
1693 }
1694
1695 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1696 struct ieee80211_vif *vif,
1697 struct ieee80211_sta *sta)
1698 {
1699 hwsim_check_magic(vif);
1700 hwsim_clear_sta_magic(sta);
1701
1702 return 0;
1703 }
1704
1705 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1706 struct ieee80211_vif *vif,
1707 enum sta_notify_cmd cmd,
1708 struct ieee80211_sta *sta)
1709 {
1710 hwsim_check_magic(vif);
1711
1712 switch (cmd) {
1713 case STA_NOTIFY_SLEEP:
1714 case STA_NOTIFY_AWAKE:
1715 /* TODO: make good use of these flags */
1716 break;
1717 default:
1718 WARN(1, "Invalid sta notify: %d\n", cmd);
1719 break;
1720 }
1721 }
1722
1723 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1724 struct ieee80211_sta *sta,
1725 bool set)
1726 {
1727 hwsim_check_sta_magic(sta);
1728 return 0;
1729 }
1730
1731 static int mac80211_hwsim_conf_tx(
1732 struct ieee80211_hw *hw,
1733 struct ieee80211_vif *vif, u16 queue,
1734 const struct ieee80211_tx_queue_params *params)
1735 {
1736 wiphy_debug(hw->wiphy,
1737 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1738 __func__, queue,
1739 params->txop, params->cw_min,
1740 params->cw_max, params->aifs);
1741 return 0;
1742 }
1743
1744 static int mac80211_hwsim_get_survey(
1745 struct ieee80211_hw *hw, int idx,
1746 struct survey_info *survey)
1747 {
1748 struct ieee80211_conf *conf = &hw->conf;
1749
1750 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1751
1752 if (idx != 0)
1753 return -ENOENT;
1754
1755 /* Current channel */
1756 survey->channel = conf->chandef.chan;
1757
1758 /*
1759 * Magically conjured noise level --- this is only ok for simulated hardware.
1760 *
1761 * A real driver which cannot determine the real channel noise MUST NOT
1762 * report any noise, especially not a magically conjured one :-)
1763 */
1764 survey->filled = SURVEY_INFO_NOISE_DBM;
1765 survey->noise = -92;
1766
1767 return 0;
1768 }
1769
1770 #ifdef CONFIG_NL80211_TESTMODE
1771 /*
1772 * This section contains example code for using netlink
1773 * attributes with the testmode command in nl80211.
1774 */
1775
1776 /* These enums need to be kept in sync with userspace */
1777 enum hwsim_testmode_attr {
1778 __HWSIM_TM_ATTR_INVALID = 0,
1779 HWSIM_TM_ATTR_CMD = 1,
1780 HWSIM_TM_ATTR_PS = 2,
1781
1782 /* keep last */
1783 __HWSIM_TM_ATTR_AFTER_LAST,
1784 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1785 };
1786
1787 enum hwsim_testmode_cmd {
1788 HWSIM_TM_CMD_SET_PS = 0,
1789 HWSIM_TM_CMD_GET_PS = 1,
1790 HWSIM_TM_CMD_STOP_QUEUES = 2,
1791 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1792 };
1793
1794 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1795 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1796 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1797 };
1798
1799 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1800 struct ieee80211_vif *vif,
1801 void *data, int len)
1802 {
1803 struct mac80211_hwsim_data *hwsim = hw->priv;
1804 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1805 struct sk_buff *skb;
1806 int err, ps;
1807
1808 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1809 hwsim_testmode_policy);
1810 if (err)
1811 return err;
1812
1813 if (!tb[HWSIM_TM_ATTR_CMD])
1814 return -EINVAL;
1815
1816 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1817 case HWSIM_TM_CMD_SET_PS:
1818 if (!tb[HWSIM_TM_ATTR_PS])
1819 return -EINVAL;
1820 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1821 return hwsim_fops_ps_write(hwsim, ps);
1822 case HWSIM_TM_CMD_GET_PS:
1823 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1824 nla_total_size(sizeof(u32)));
1825 if (!skb)
1826 return -ENOMEM;
1827 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1828 goto nla_put_failure;
1829 return cfg80211_testmode_reply(skb);
1830 case HWSIM_TM_CMD_STOP_QUEUES:
1831 ieee80211_stop_queues(hw);
1832 return 0;
1833 case HWSIM_TM_CMD_WAKE_QUEUES:
1834 ieee80211_wake_queues(hw);
1835 return 0;
1836 default:
1837 return -EOPNOTSUPP;
1838 }
1839
1840 nla_put_failure:
1841 kfree_skb(skb);
1842 return -ENOBUFS;
1843 }
1844 #endif
1845
1846 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1847 struct ieee80211_vif *vif,
1848 enum ieee80211_ampdu_mlme_action action,
1849 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1850 u8 buf_size, bool amsdu)
1851 {
1852 switch (action) {
1853 case IEEE80211_AMPDU_TX_START:
1854 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1855 break;
1856 case IEEE80211_AMPDU_TX_STOP_CONT:
1857 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1858 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1859 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1860 break;
1861 case IEEE80211_AMPDU_TX_OPERATIONAL:
1862 break;
1863 case IEEE80211_AMPDU_RX_START:
1864 case IEEE80211_AMPDU_RX_STOP:
1865 break;
1866 default:
1867 return -EOPNOTSUPP;
1868 }
1869
1870 return 0;
1871 }
1872
1873 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1874 struct ieee80211_vif *vif,
1875 u32 queues, bool drop)
1876 {
1877 /* Not implemented, queues only on kernel side */
1878 }
1879
1880 static void hw_scan_work(struct work_struct *work)
1881 {
1882 struct mac80211_hwsim_data *hwsim =
1883 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1884 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1885 int dwell, i;
1886
1887 mutex_lock(&hwsim->mutex);
1888 if (hwsim->scan_chan_idx >= req->n_channels) {
1889 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1890 ieee80211_scan_completed(hwsim->hw, false);
1891 hwsim->hw_scan_request = NULL;
1892 hwsim->hw_scan_vif = NULL;
1893 hwsim->tmp_chan = NULL;
1894 mutex_unlock(&hwsim->mutex);
1895 return;
1896 }
1897
1898 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1899 req->channels[hwsim->scan_chan_idx]->center_freq);
1900
1901 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1902 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1903 IEEE80211_CHAN_RADAR) ||
1904 !req->n_ssids) {
1905 dwell = 120;
1906 } else {
1907 dwell = 30;
1908 /* send probes */
1909 for (i = 0; i < req->n_ssids; i++) {
1910 struct sk_buff *probe;
1911
1912 probe = ieee80211_probereq_get(hwsim->hw,
1913 hwsim->scan_addr,
1914 req->ssids[i].ssid,
1915 req->ssids[i].ssid_len,
1916 req->ie_len);
1917 if (!probe)
1918 continue;
1919
1920 if (req->ie_len)
1921 memcpy(skb_put(probe, req->ie_len), req->ie,
1922 req->ie_len);
1923
1924 local_bh_disable();
1925 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1926 hwsim->tmp_chan);
1927 local_bh_enable();
1928 }
1929 }
1930 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1931 msecs_to_jiffies(dwell));
1932 hwsim->scan_chan_idx++;
1933 mutex_unlock(&hwsim->mutex);
1934 }
1935
1936 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1937 struct ieee80211_vif *vif,
1938 struct ieee80211_scan_request *hw_req)
1939 {
1940 struct mac80211_hwsim_data *hwsim = hw->priv;
1941 struct cfg80211_scan_request *req = &hw_req->req;
1942
1943 mutex_lock(&hwsim->mutex);
1944 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1945 mutex_unlock(&hwsim->mutex);
1946 return -EBUSY;
1947 }
1948 hwsim->hw_scan_request = req;
1949 hwsim->hw_scan_vif = vif;
1950 hwsim->scan_chan_idx = 0;
1951 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1952 get_random_mask_addr(hwsim->scan_addr,
1953 hw_req->req.mac_addr,
1954 hw_req->req.mac_addr_mask);
1955 else
1956 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1957 mutex_unlock(&hwsim->mutex);
1958
1959 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1960
1961 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1962
1963 return 0;
1964 }
1965
1966 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1967 struct ieee80211_vif *vif)
1968 {
1969 struct mac80211_hwsim_data *hwsim = hw->priv;
1970
1971 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1972
1973 cancel_delayed_work_sync(&hwsim->hw_scan);
1974
1975 mutex_lock(&hwsim->mutex);
1976 ieee80211_scan_completed(hwsim->hw, true);
1977 hwsim->tmp_chan = NULL;
1978 hwsim->hw_scan_request = NULL;
1979 hwsim->hw_scan_vif = NULL;
1980 mutex_unlock(&hwsim->mutex);
1981 }
1982
1983 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1984 struct ieee80211_vif *vif,
1985 const u8 *mac_addr)
1986 {
1987 struct mac80211_hwsim_data *hwsim = hw->priv;
1988
1989 mutex_lock(&hwsim->mutex);
1990
1991 if (hwsim->scanning) {
1992 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1993 goto out;
1994 }
1995
1996 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1997
1998 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1999 hwsim->scanning = true;
2000
2001 out:
2002 mutex_unlock(&hwsim->mutex);
2003 }
2004
2005 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2006 struct ieee80211_vif *vif)
2007 {
2008 struct mac80211_hwsim_data *hwsim = hw->priv;
2009
2010 mutex_lock(&hwsim->mutex);
2011
2012 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2013 hwsim->scanning = false;
2014 eth_zero_addr(hwsim->scan_addr);
2015
2016 mutex_unlock(&hwsim->mutex);
2017 }
2018
2019 static void hw_roc_start(struct work_struct *work)
2020 {
2021 struct mac80211_hwsim_data *hwsim =
2022 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2023
2024 mutex_lock(&hwsim->mutex);
2025
2026 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2027 hwsim->tmp_chan = hwsim->roc_chan;
2028 ieee80211_ready_on_channel(hwsim->hw);
2029
2030 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2031 msecs_to_jiffies(hwsim->roc_duration));
2032
2033 mutex_unlock(&hwsim->mutex);
2034 }
2035
2036 static void hw_roc_done(struct work_struct *work)
2037 {
2038 struct mac80211_hwsim_data *hwsim =
2039 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2040
2041 mutex_lock(&hwsim->mutex);
2042 ieee80211_remain_on_channel_expired(hwsim->hw);
2043 hwsim->tmp_chan = NULL;
2044 mutex_unlock(&hwsim->mutex);
2045
2046 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2047 }
2048
2049 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2050 struct ieee80211_vif *vif,
2051 struct ieee80211_channel *chan,
2052 int duration,
2053 enum ieee80211_roc_type type)
2054 {
2055 struct mac80211_hwsim_data *hwsim = hw->priv;
2056
2057 mutex_lock(&hwsim->mutex);
2058 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2059 mutex_unlock(&hwsim->mutex);
2060 return -EBUSY;
2061 }
2062
2063 hwsim->roc_chan = chan;
2064 hwsim->roc_duration = duration;
2065 mutex_unlock(&hwsim->mutex);
2066
2067 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2068 chan->center_freq, duration);
2069 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2070
2071 return 0;
2072 }
2073
2074 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2075 {
2076 struct mac80211_hwsim_data *hwsim = hw->priv;
2077
2078 cancel_delayed_work_sync(&hwsim->roc_start);
2079 cancel_delayed_work_sync(&hwsim->roc_done);
2080
2081 mutex_lock(&hwsim->mutex);
2082 hwsim->tmp_chan = NULL;
2083 mutex_unlock(&hwsim->mutex);
2084
2085 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2086
2087 return 0;
2088 }
2089
2090 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2091 struct ieee80211_chanctx_conf *ctx)
2092 {
2093 hwsim_set_chanctx_magic(ctx);
2094 wiphy_debug(hw->wiphy,
2095 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2096 ctx->def.chan->center_freq, ctx->def.width,
2097 ctx->def.center_freq1, ctx->def.center_freq2);
2098 return 0;
2099 }
2100
2101 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2102 struct ieee80211_chanctx_conf *ctx)
2103 {
2104 wiphy_debug(hw->wiphy,
2105 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2106 ctx->def.chan->center_freq, ctx->def.width,
2107 ctx->def.center_freq1, ctx->def.center_freq2);
2108 hwsim_check_chanctx_magic(ctx);
2109 hwsim_clear_chanctx_magic(ctx);
2110 }
2111
2112 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2113 struct ieee80211_chanctx_conf *ctx,
2114 u32 changed)
2115 {
2116 hwsim_check_chanctx_magic(ctx);
2117 wiphy_debug(hw->wiphy,
2118 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2119 ctx->def.chan->center_freq, ctx->def.width,
2120 ctx->def.center_freq1, ctx->def.center_freq2);
2121 }
2122
2123 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2124 struct ieee80211_vif *vif,
2125 struct ieee80211_chanctx_conf *ctx)
2126 {
2127 hwsim_check_magic(vif);
2128 hwsim_check_chanctx_magic(ctx);
2129
2130 return 0;
2131 }
2132
2133 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2134 struct ieee80211_vif *vif,
2135 struct ieee80211_chanctx_conf *ctx)
2136 {
2137 hwsim_check_magic(vif);
2138 hwsim_check_chanctx_magic(ctx);
2139 }
2140
2141 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2142 "tx_pkts_nic",
2143 "tx_bytes_nic",
2144 "rx_pkts_nic",
2145 "rx_bytes_nic",
2146 "d_tx_dropped",
2147 "d_tx_failed",
2148 "d_ps_mode",
2149 "d_group",
2150 "d_tx_power",
2151 };
2152
2153 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2154
2155 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2156 struct ieee80211_vif *vif,
2157 u32 sset, u8 *data)
2158 {
2159 if (sset == ETH_SS_STATS)
2160 memcpy(data, *mac80211_hwsim_gstrings_stats,
2161 sizeof(mac80211_hwsim_gstrings_stats));
2162 }
2163
2164 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2165 struct ieee80211_vif *vif, int sset)
2166 {
2167 if (sset == ETH_SS_STATS)
2168 return MAC80211_HWSIM_SSTATS_LEN;
2169 return 0;
2170 }
2171
2172 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2173 struct ieee80211_vif *vif,
2174 struct ethtool_stats *stats, u64 *data)
2175 {
2176 struct mac80211_hwsim_data *ar = hw->priv;
2177 int i = 0;
2178
2179 data[i++] = ar->tx_pkts;
2180 data[i++] = ar->tx_bytes;
2181 data[i++] = ar->rx_pkts;
2182 data[i++] = ar->rx_bytes;
2183 data[i++] = ar->tx_dropped;
2184 data[i++] = ar->tx_failed;
2185 data[i++] = ar->ps;
2186 data[i++] = ar->group;
2187 data[i++] = ar->power_level;
2188
2189 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2190 }
2191
2192 static const struct ieee80211_ops mac80211_hwsim_ops = {
2193 .tx = mac80211_hwsim_tx,
2194 .start = mac80211_hwsim_start,
2195 .stop = mac80211_hwsim_stop,
2196 .add_interface = mac80211_hwsim_add_interface,
2197 .change_interface = mac80211_hwsim_change_interface,
2198 .remove_interface = mac80211_hwsim_remove_interface,
2199 .config = mac80211_hwsim_config,
2200 .configure_filter = mac80211_hwsim_configure_filter,
2201 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2202 .sta_add = mac80211_hwsim_sta_add,
2203 .sta_remove = mac80211_hwsim_sta_remove,
2204 .sta_notify = mac80211_hwsim_sta_notify,
2205 .set_tim = mac80211_hwsim_set_tim,
2206 .conf_tx = mac80211_hwsim_conf_tx,
2207 .get_survey = mac80211_hwsim_get_survey,
2208 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2209 .ampdu_action = mac80211_hwsim_ampdu_action,
2210 .sw_scan_start = mac80211_hwsim_sw_scan,
2211 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2212 .flush = mac80211_hwsim_flush,
2213 .get_tsf = mac80211_hwsim_get_tsf,
2214 .set_tsf = mac80211_hwsim_set_tsf,
2215 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2216 .get_et_stats = mac80211_hwsim_get_et_stats,
2217 .get_et_strings = mac80211_hwsim_get_et_strings,
2218 };
2219
2220 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2221
2222 struct hwsim_new_radio_params {
2223 unsigned int channels;
2224 const char *reg_alpha2;
2225 const struct ieee80211_regdomain *regd;
2226 bool reg_strict;
2227 bool p2p_device;
2228 bool use_chanctx;
2229 bool destroy_on_close;
2230 const char *hwname;
2231 bool no_vif;
2232 };
2233
2234 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2235 struct genl_info *info)
2236 {
2237 if (info)
2238 genl_notify(&hwsim_genl_family, mcast_skb, info,
2239 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2240 else
2241 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2242 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2243 }
2244
2245 static int append_radio_msg(struct sk_buff *skb, int id,
2246 struct hwsim_new_radio_params *param)
2247 {
2248 int ret;
2249
2250 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2251 if (ret < 0)
2252 return ret;
2253
2254 if (param->channels) {
2255 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2256 if (ret < 0)
2257 return ret;
2258 }
2259
2260 if (param->reg_alpha2) {
2261 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2262 param->reg_alpha2);
2263 if (ret < 0)
2264 return ret;
2265 }
2266
2267 if (param->regd) {
2268 int i;
2269
2270 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2271 if (hwsim_world_regdom_custom[i] != param->regd)
2272 continue;
2273
2274 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2275 if (ret < 0)
2276 return ret;
2277 break;
2278 }
2279 }
2280
2281 if (param->reg_strict) {
2282 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2283 if (ret < 0)
2284 return ret;
2285 }
2286
2287 if (param->p2p_device) {
2288 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2289 if (ret < 0)
2290 return ret;
2291 }
2292
2293 if (param->use_chanctx) {
2294 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2295 if (ret < 0)
2296 return ret;
2297 }
2298
2299 if (param->hwname) {
2300 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2301 strlen(param->hwname), param->hwname);
2302 if (ret < 0)
2303 return ret;
2304 }
2305
2306 return 0;
2307 }
2308
2309 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2310 struct hwsim_new_radio_params *param)
2311 {
2312 struct sk_buff *mcast_skb;
2313 void *data;
2314
2315 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2316 if (!mcast_skb)
2317 return;
2318
2319 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2320 HWSIM_CMD_NEW_RADIO);
2321 if (!data)
2322 goto out_err;
2323
2324 if (append_radio_msg(mcast_skb, id, param) < 0)
2325 goto out_err;
2326
2327 genlmsg_end(mcast_skb, data);
2328
2329 hwsim_mcast_config_msg(mcast_skb, info);
2330 return;
2331
2332 out_err:
2333 genlmsg_cancel(mcast_skb, data);
2334 nlmsg_free(mcast_skb);
2335 }
2336
2337 static int mac80211_hwsim_new_radio(struct genl_info *info,
2338 struct hwsim_new_radio_params *param)
2339 {
2340 int err;
2341 u8 addr[ETH_ALEN];
2342 struct mac80211_hwsim_data *data;
2343 struct ieee80211_hw *hw;
2344 enum ieee80211_band band;
2345 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2346 int idx;
2347
2348 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2349 return -EINVAL;
2350
2351 spin_lock_bh(&hwsim_radio_lock);
2352 idx = hwsim_radio_idx++;
2353 spin_unlock_bh(&hwsim_radio_lock);
2354
2355 if (param->use_chanctx)
2356 ops = &mac80211_hwsim_mchan_ops;
2357 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2358 if (!hw) {
2359 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2360 err = -ENOMEM;
2361 goto failed;
2362 }
2363 data = hw->priv;
2364 data->hw = hw;
2365
2366 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2367 if (IS_ERR(data->dev)) {
2368 printk(KERN_DEBUG
2369 "mac80211_hwsim: device_create failed (%ld)\n",
2370 PTR_ERR(data->dev));
2371 err = -ENOMEM;
2372 goto failed_drvdata;
2373 }
2374 data->dev->driver = &mac80211_hwsim_driver.driver;
2375 err = device_bind_driver(data->dev);
2376 if (err != 0) {
2377 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2378 err);
2379 goto failed_bind;
2380 }
2381
2382 skb_queue_head_init(&data->pending);
2383
2384 SET_IEEE80211_DEV(hw, data->dev);
2385 eth_zero_addr(addr);
2386 addr[0] = 0x02;
2387 addr[3] = idx >> 8;
2388 addr[4] = idx;
2389 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2390 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2391 data->addresses[1].addr[0] |= 0x40;
2392 hw->wiphy->n_addresses = 2;
2393 hw->wiphy->addresses = data->addresses;
2394
2395 data->channels = param->channels;
2396 data->use_chanctx = param->use_chanctx;
2397 data->idx = idx;
2398 data->destroy_on_close = param->destroy_on_close;
2399 if (info)
2400 data->portid = info->snd_portid;
2401
2402 if (data->use_chanctx) {
2403 hw->wiphy->max_scan_ssids = 255;
2404 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2405 hw->wiphy->max_remain_on_channel_duration = 1000;
2406 /* For channels > 1 DFS is not allowed */
2407 hw->wiphy->n_iface_combinations = 1;
2408 hw->wiphy->iface_combinations = &data->if_combination;
2409 if (param->p2p_device)
2410 data->if_combination = hwsim_if_comb_p2p_dev[0];
2411 else
2412 data->if_combination = hwsim_if_comb[0];
2413 data->if_combination.num_different_channels = data->channels;
2414 } else if (param->p2p_device) {
2415 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2416 hw->wiphy->n_iface_combinations =
2417 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2418 } else {
2419 hw->wiphy->iface_combinations = hwsim_if_comb;
2420 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2421 }
2422
2423 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2424 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2425 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2426
2427 hw->queues = 5;
2428 hw->offchannel_tx_hw_queue = 4;
2429 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2430 BIT(NL80211_IFTYPE_AP) |
2431 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2432 BIT(NL80211_IFTYPE_P2P_GO) |
2433 BIT(NL80211_IFTYPE_ADHOC) |
2434 BIT(NL80211_IFTYPE_MESH_POINT);
2435
2436 if (param->p2p_device)
2437 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2438
2439 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2440 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2441 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2442 ieee80211_hw_set(hw, QUEUE_CONTROL);
2443 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2444 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2445 ieee80211_hw_set(hw, MFP_CAPABLE);
2446 ieee80211_hw_set(hw, SIGNAL_DBM);
2447 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2448 if (rctbl)
2449 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2450
2451 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2452 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2453 WIPHY_FLAG_AP_UAPSD |
2454 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2455 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2456 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2457 NL80211_FEATURE_STATIC_SMPS |
2458 NL80211_FEATURE_DYNAMIC_SMPS |
2459 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2460 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2461
2462 /* ask mac80211 to reserve space for magic */
2463 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2464 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2465 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2466
2467 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2468 sizeof(hwsim_channels_2ghz));
2469 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2470 sizeof(hwsim_channels_5ghz));
2471 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2472
2473 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2474 struct ieee80211_supported_band *sband = &data->bands[band];
2475 switch (band) {
2476 case IEEE80211_BAND_2GHZ:
2477 sband->channels = data->channels_2ghz;
2478 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2479 sband->bitrates = data->rates;
2480 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2481 break;
2482 case IEEE80211_BAND_5GHZ:
2483 sband->channels = data->channels_5ghz;
2484 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2485 sband->bitrates = data->rates + 4;
2486 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2487
2488 sband->vht_cap.vht_supported = true;
2489 sband->vht_cap.cap =
2490 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2491 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2492 IEEE80211_VHT_CAP_RXLDPC |
2493 IEEE80211_VHT_CAP_SHORT_GI_80 |
2494 IEEE80211_VHT_CAP_SHORT_GI_160 |
2495 IEEE80211_VHT_CAP_TXSTBC |
2496 IEEE80211_VHT_CAP_RXSTBC_1 |
2497 IEEE80211_VHT_CAP_RXSTBC_2 |
2498 IEEE80211_VHT_CAP_RXSTBC_3 |
2499 IEEE80211_VHT_CAP_RXSTBC_4 |
2500 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2501 sband->vht_cap.vht_mcs.rx_mcs_map =
2502 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2503 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2504 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2505 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2506 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2507 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2508 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2509 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2510 sband->vht_cap.vht_mcs.tx_mcs_map =
2511 sband->vht_cap.vht_mcs.rx_mcs_map;
2512 break;
2513 default:
2514 continue;
2515 }
2516
2517 sband->ht_cap.ht_supported = true;
2518 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2519 IEEE80211_HT_CAP_GRN_FLD |
2520 IEEE80211_HT_CAP_SGI_20 |
2521 IEEE80211_HT_CAP_SGI_40 |
2522 IEEE80211_HT_CAP_DSSSCCK40;
2523 sband->ht_cap.ampdu_factor = 0x3;
2524 sband->ht_cap.ampdu_density = 0x6;
2525 memset(&sband->ht_cap.mcs, 0,
2526 sizeof(sband->ht_cap.mcs));
2527 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2528 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2529 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2530
2531 hw->wiphy->bands[band] = sband;
2532 }
2533
2534 /* By default all radios belong to the first group */
2535 data->group = 1;
2536 mutex_init(&data->mutex);
2537
2538 /* Enable frame retransmissions for lossy channels */
2539 hw->max_rates = 4;
2540 hw->max_rate_tries = 11;
2541
2542 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2543 hw->wiphy->n_vendor_commands =
2544 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2545 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2546 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2547
2548 if (param->reg_strict)
2549 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2550 if (param->regd) {
2551 data->regd = param->regd;
2552 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2553 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2554 /* give the regulatory workqueue a chance to run */
2555 schedule_timeout_interruptible(1);
2556 }
2557
2558 if (param->no_vif)
2559 ieee80211_hw_set(hw, NO_AUTO_VIF);
2560
2561 err = ieee80211_register_hw(hw);
2562 if (err < 0) {
2563 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2564 err);
2565 goto failed_hw;
2566 }
2567
2568 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2569
2570 if (param->reg_alpha2) {
2571 data->alpha2[0] = param->reg_alpha2[0];
2572 data->alpha2[1] = param->reg_alpha2[1];
2573 regulatory_hint(hw->wiphy, param->reg_alpha2);
2574 }
2575
2576 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2577 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2578 debugfs_create_file("group", 0666, data->debugfs, data,
2579 &hwsim_fops_group);
2580 if (!data->use_chanctx)
2581 debugfs_create_file("dfs_simulate_radar", 0222,
2582 data->debugfs,
2583 data, &hwsim_simulate_radar);
2584
2585 tasklet_hrtimer_init(&data->beacon_timer,
2586 mac80211_hwsim_beacon,
2587 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2588
2589 spin_lock_bh(&hwsim_radio_lock);
2590 list_add_tail(&data->list, &hwsim_radios);
2591 spin_unlock_bh(&hwsim_radio_lock);
2592
2593 if (idx > 0)
2594 hwsim_mcast_new_radio(idx, info, param);
2595
2596 return idx;
2597
2598 failed_hw:
2599 device_release_driver(data->dev);
2600 failed_bind:
2601 device_unregister(data->dev);
2602 failed_drvdata:
2603 ieee80211_free_hw(hw);
2604 failed:
2605 return err;
2606 }
2607
2608 static void hwsim_mcast_del_radio(int id, const char *hwname,
2609 struct genl_info *info)
2610 {
2611 struct sk_buff *skb;
2612 void *data;
2613 int ret;
2614
2615 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2616 if (!skb)
2617 return;
2618
2619 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2620 HWSIM_CMD_DEL_RADIO);
2621 if (!data)
2622 goto error;
2623
2624 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2625 if (ret < 0)
2626 goto error;
2627
2628 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2629 hwname);
2630 if (ret < 0)
2631 goto error;
2632
2633 genlmsg_end(skb, data);
2634
2635 hwsim_mcast_config_msg(skb, info);
2636
2637 return;
2638
2639 error:
2640 nlmsg_free(skb);
2641 }
2642
2643 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2644 const char *hwname,
2645 struct genl_info *info)
2646 {
2647 hwsim_mcast_del_radio(data->idx, hwname, info);
2648 debugfs_remove_recursive(data->debugfs);
2649 ieee80211_unregister_hw(data->hw);
2650 device_release_driver(data->dev);
2651 device_unregister(data->dev);
2652 ieee80211_free_hw(data->hw);
2653 }
2654
2655 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2656 struct mac80211_hwsim_data *data,
2657 u32 portid, u32 seq,
2658 struct netlink_callback *cb, int flags)
2659 {
2660 void *hdr;
2661 struct hwsim_new_radio_params param = { };
2662 int res = -EMSGSIZE;
2663
2664 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2665 HWSIM_CMD_GET_RADIO);
2666 if (!hdr)
2667 return -EMSGSIZE;
2668
2669 if (cb)
2670 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2671
2672 if (data->alpha2[0] && data->alpha2[1])
2673 param.reg_alpha2 = data->alpha2;
2674
2675 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2676 REGULATORY_STRICT_REG);
2677 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2678 BIT(NL80211_IFTYPE_P2P_DEVICE));
2679 param.use_chanctx = data->use_chanctx;
2680 param.regd = data->regd;
2681 param.channels = data->channels;
2682 param.hwname = wiphy_name(data->hw->wiphy);
2683
2684 res = append_radio_msg(skb, data->idx, &param);
2685 if (res < 0)
2686 goto out_err;
2687
2688 genlmsg_end(skb, hdr);
2689 return 0;
2690
2691 out_err:
2692 genlmsg_cancel(skb, hdr);
2693 return res;
2694 }
2695
2696 static void mac80211_hwsim_free(void)
2697 {
2698 struct mac80211_hwsim_data *data;
2699
2700 spin_lock_bh(&hwsim_radio_lock);
2701 while ((data = list_first_entry_or_null(&hwsim_radios,
2702 struct mac80211_hwsim_data,
2703 list))) {
2704 list_del(&data->list);
2705 spin_unlock_bh(&hwsim_radio_lock);
2706 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2707 NULL);
2708 spin_lock_bh(&hwsim_radio_lock);
2709 }
2710 spin_unlock_bh(&hwsim_radio_lock);
2711 class_destroy(hwsim_class);
2712 }
2713
2714 static const struct net_device_ops hwsim_netdev_ops = {
2715 .ndo_start_xmit = hwsim_mon_xmit,
2716 .ndo_change_mtu = eth_change_mtu,
2717 .ndo_set_mac_address = eth_mac_addr,
2718 .ndo_validate_addr = eth_validate_addr,
2719 };
2720
2721 static void hwsim_mon_setup(struct net_device *dev)
2722 {
2723 dev->netdev_ops = &hwsim_netdev_ops;
2724 dev->destructor = free_netdev;
2725 ether_setup(dev);
2726 dev->priv_flags |= IFF_NO_QUEUE;
2727 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2728 eth_zero_addr(dev->dev_addr);
2729 dev->dev_addr[0] = 0x12;
2730 }
2731
2732 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2733 {
2734 struct mac80211_hwsim_data *data;
2735 bool _found = false;
2736
2737 spin_lock_bh(&hwsim_radio_lock);
2738 list_for_each_entry(data, &hwsim_radios, list) {
2739 if (mac80211_hwsim_addr_match(data, addr)) {
2740 _found = true;
2741 break;
2742 }
2743 }
2744 spin_unlock_bh(&hwsim_radio_lock);
2745
2746 if (!_found)
2747 return NULL;
2748
2749 return data;
2750 }
2751
2752 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2753 struct genl_info *info)
2754 {
2755
2756 struct ieee80211_hdr *hdr;
2757 struct mac80211_hwsim_data *data2;
2758 struct ieee80211_tx_info *txi;
2759 struct hwsim_tx_rate *tx_attempts;
2760 u64 ret_skb_cookie;
2761 struct sk_buff *skb, *tmp;
2762 const u8 *src;
2763 unsigned int hwsim_flags;
2764 int i;
2765 bool found = false;
2766
2767 if (info->snd_portid != wmediumd_portid)
2768 return -EINVAL;
2769
2770 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2771 !info->attrs[HWSIM_ATTR_FLAGS] ||
2772 !info->attrs[HWSIM_ATTR_COOKIE] ||
2773 !info->attrs[HWSIM_ATTR_TX_INFO])
2774 goto out;
2775
2776 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2777 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2778 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2779
2780 data2 = get_hwsim_data_ref_from_addr(src);
2781 if (!data2)
2782 goto out;
2783
2784 /* look for the skb matching the cookie passed back from user */
2785 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2786 u64 skb_cookie;
2787
2788 txi = IEEE80211_SKB_CB(skb);
2789 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2790
2791 if (skb_cookie == ret_skb_cookie) {
2792 skb_unlink(skb, &data2->pending);
2793 found = true;
2794 break;
2795 }
2796 }
2797
2798 /* not found */
2799 if (!found)
2800 goto out;
2801
2802 /* Tx info received because the frame was broadcasted on user space,
2803 so we get all the necessary info: tx attempts and skb control buff */
2804
2805 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2806 info->attrs[HWSIM_ATTR_TX_INFO]);
2807
2808 /* now send back TX status */
2809 txi = IEEE80211_SKB_CB(skb);
2810
2811 ieee80211_tx_info_clear_status(txi);
2812
2813 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2814 txi->status.rates[i].idx = tx_attempts[i].idx;
2815 txi->status.rates[i].count = tx_attempts[i].count;
2816 /*txi->status.rates[i].flags = 0;*/
2817 }
2818
2819 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2820
2821 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2822 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2823 if (skb->len >= 16) {
2824 hdr = (struct ieee80211_hdr *) skb->data;
2825 mac80211_hwsim_monitor_ack(data2->channel,
2826 hdr->addr2);
2827 }
2828 txi->flags |= IEEE80211_TX_STAT_ACK;
2829 }
2830 ieee80211_tx_status_irqsafe(data2->hw, skb);
2831 return 0;
2832 out:
2833 return -EINVAL;
2834
2835 }
2836
2837 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2838 struct genl_info *info)
2839 {
2840 struct mac80211_hwsim_data *data2;
2841 struct ieee80211_rx_status rx_status;
2842 const u8 *dst;
2843 int frame_data_len;
2844 void *frame_data;
2845 struct sk_buff *skb = NULL;
2846
2847 if (info->snd_portid != wmediumd_portid)
2848 return -EINVAL;
2849
2850 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2851 !info->attrs[HWSIM_ATTR_FRAME] ||
2852 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2853 !info->attrs[HWSIM_ATTR_SIGNAL])
2854 goto out;
2855
2856 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2857 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2858 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2859
2860 /* Allocate new skb here */
2861 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2862 if (skb == NULL)
2863 goto err;
2864
2865 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2866 goto err;
2867
2868 /* Copy the data */
2869 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2870
2871 data2 = get_hwsim_data_ref_from_addr(dst);
2872 if (!data2)
2873 goto out;
2874
2875 /* check if radio is configured properly */
2876
2877 if (data2->idle || !data2->started)
2878 goto out;
2879
2880 /* A frame is received from user space */
2881 memset(&rx_status, 0, sizeof(rx_status));
2882 if (info->attrs[HWSIM_ATTR_FREQ]) {
2883 /* throw away off-channel packets, but allow both the temporary
2884 * ("hw" scan/remain-on-channel) and regular channel, since the
2885 * internal datapath also allows this
2886 */
2887 mutex_lock(&data2->mutex);
2888 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2889
2890 if (rx_status.freq != data2->channel->center_freq &&
2891 (!data2->tmp_chan ||
2892 rx_status.freq != data2->tmp_chan->center_freq)) {
2893 mutex_unlock(&data2->mutex);
2894 goto out;
2895 }
2896 mutex_unlock(&data2->mutex);
2897 } else {
2898 rx_status.freq = data2->channel->center_freq;
2899 }
2900
2901 rx_status.band = data2->channel->band;
2902 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2903 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2904
2905 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2906 data2->rx_pkts++;
2907 data2->rx_bytes += skb->len;
2908 ieee80211_rx_irqsafe(data2->hw, skb);
2909
2910 return 0;
2911 err:
2912 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2913 out:
2914 dev_kfree_skb(skb);
2915 return -EINVAL;
2916 }
2917
2918 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2919 struct genl_info *info)
2920 {
2921 struct mac80211_hwsim_data *data;
2922 int chans = 1;
2923
2924 spin_lock_bh(&hwsim_radio_lock);
2925 list_for_each_entry(data, &hwsim_radios, list)
2926 chans = max(chans, data->channels);
2927 spin_unlock_bh(&hwsim_radio_lock);
2928
2929 /* In the future we should revise the userspace API and allow it
2930 * to set a flag that it does support multi-channel, then we can
2931 * let this pass conditionally on the flag.
2932 * For current userspace, prohibit it since it won't work right.
2933 */
2934 if (chans > 1)
2935 return -EOPNOTSUPP;
2936
2937 if (wmediumd_portid)
2938 return -EBUSY;
2939
2940 wmediumd_portid = info->snd_portid;
2941
2942 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2943 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2944
2945 return 0;
2946 }
2947
2948 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2949 {
2950 struct hwsim_new_radio_params param = { 0 };
2951
2952 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2953 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2954 param.channels = channels;
2955 param.destroy_on_close =
2956 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2957
2958 if (info->attrs[HWSIM_ATTR_CHANNELS])
2959 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2960
2961 if (info->attrs[HWSIM_ATTR_NO_VIF])
2962 param.no_vif = true;
2963
2964 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2965 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2966
2967 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2968 param.use_chanctx = true;
2969 else
2970 param.use_chanctx = (param.channels > 1);
2971
2972 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2973 param.reg_alpha2 =
2974 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2975
2976 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2977 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2978
2979 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2980 return -EINVAL;
2981 param.regd = hwsim_world_regdom_custom[idx];
2982 }
2983
2984 return mac80211_hwsim_new_radio(info, &param);
2985 }
2986
2987 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2988 {
2989 struct mac80211_hwsim_data *data;
2990 s64 idx = -1;
2991 const char *hwname = NULL;
2992
2993 if (info->attrs[HWSIM_ATTR_RADIO_ID])
2994 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2995 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2996 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2997 else
2998 return -EINVAL;
2999
3000 spin_lock_bh(&hwsim_radio_lock);
3001 list_for_each_entry(data, &hwsim_radios, list) {
3002 if (idx >= 0) {
3003 if (data->idx != idx)
3004 continue;
3005 } else {
3006 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3007 continue;
3008 }
3009
3010 list_del(&data->list);
3011 spin_unlock_bh(&hwsim_radio_lock);
3012 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3013 info);
3014 return 0;
3015 }
3016 spin_unlock_bh(&hwsim_radio_lock);
3017
3018 return -ENODEV;
3019 }
3020
3021 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3022 {
3023 struct mac80211_hwsim_data *data;
3024 struct sk_buff *skb;
3025 int idx, res = -ENODEV;
3026
3027 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3028 return -EINVAL;
3029 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3030
3031 spin_lock_bh(&hwsim_radio_lock);
3032 list_for_each_entry(data, &hwsim_radios, list) {
3033 if (data->idx != idx)
3034 continue;
3035
3036 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3037 if (!skb) {
3038 res = -ENOMEM;
3039 goto out_err;
3040 }
3041
3042 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3043 info->snd_seq, NULL, 0);
3044 if (res < 0) {
3045 nlmsg_free(skb);
3046 goto out_err;
3047 }
3048
3049 genlmsg_reply(skb, info);
3050 break;
3051 }
3052
3053 out_err:
3054 spin_unlock_bh(&hwsim_radio_lock);
3055
3056 return res;
3057 }
3058
3059 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3060 struct netlink_callback *cb)
3061 {
3062 int idx = cb->args[0];
3063 struct mac80211_hwsim_data *data = NULL;
3064 int res;
3065
3066 spin_lock_bh(&hwsim_radio_lock);
3067
3068 if (idx == hwsim_radio_idx)
3069 goto done;
3070
3071 list_for_each_entry(data, &hwsim_radios, list) {
3072 if (data->idx < idx)
3073 continue;
3074
3075 res = mac80211_hwsim_get_radio(skb, data,
3076 NETLINK_CB(cb->skb).portid,
3077 cb->nlh->nlmsg_seq, cb,
3078 NLM_F_MULTI);
3079 if (res < 0)
3080 break;
3081
3082 idx = data->idx + 1;
3083 }
3084
3085 cb->args[0] = idx;
3086
3087 done:
3088 spin_unlock_bh(&hwsim_radio_lock);
3089 return skb->len;
3090 }
3091
3092 /* Generic Netlink operations array */
3093 static const struct genl_ops hwsim_ops[] = {
3094 {
3095 .cmd = HWSIM_CMD_REGISTER,
3096 .policy = hwsim_genl_policy,
3097 .doit = hwsim_register_received_nl,
3098 .flags = GENL_ADMIN_PERM,
3099 },
3100 {
3101 .cmd = HWSIM_CMD_FRAME,
3102 .policy = hwsim_genl_policy,
3103 .doit = hwsim_cloned_frame_received_nl,
3104 },
3105 {
3106 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3107 .policy = hwsim_genl_policy,
3108 .doit = hwsim_tx_info_frame_received_nl,
3109 },
3110 {
3111 .cmd = HWSIM_CMD_NEW_RADIO,
3112 .policy = hwsim_genl_policy,
3113 .doit = hwsim_new_radio_nl,
3114 .flags = GENL_ADMIN_PERM,
3115 },
3116 {
3117 .cmd = HWSIM_CMD_DEL_RADIO,
3118 .policy = hwsim_genl_policy,
3119 .doit = hwsim_del_radio_nl,
3120 .flags = GENL_ADMIN_PERM,
3121 },
3122 {
3123 .cmd = HWSIM_CMD_GET_RADIO,
3124 .policy = hwsim_genl_policy,
3125 .doit = hwsim_get_radio_nl,
3126 .dumpit = hwsim_dump_radio_nl,
3127 },
3128 };
3129
3130 static void destroy_radio(struct work_struct *work)
3131 {
3132 struct mac80211_hwsim_data *data =
3133 container_of(work, struct mac80211_hwsim_data, destroy_work);
3134
3135 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3136 }
3137
3138 static void remove_user_radios(u32 portid)
3139 {
3140 struct mac80211_hwsim_data *entry, *tmp;
3141
3142 spin_lock_bh(&hwsim_radio_lock);
3143 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3144 if (entry->destroy_on_close && entry->portid == portid) {
3145 list_del(&entry->list);
3146 INIT_WORK(&entry->destroy_work, destroy_radio);
3147 schedule_work(&entry->destroy_work);
3148 }
3149 }
3150 spin_unlock_bh(&hwsim_radio_lock);
3151 }
3152
3153 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3154 unsigned long state,
3155 void *_notify)
3156 {
3157 struct netlink_notify *notify = _notify;
3158
3159 if (state != NETLINK_URELEASE)
3160 return NOTIFY_DONE;
3161
3162 remove_user_radios(notify->portid);
3163
3164 if (notify->portid == wmediumd_portid) {
3165 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3166 " socket, switching to perfect channel medium\n");
3167 wmediumd_portid = 0;
3168 }
3169 return NOTIFY_DONE;
3170
3171 }
3172
3173 static struct notifier_block hwsim_netlink_notifier = {
3174 .notifier_call = mac80211_hwsim_netlink_notify,
3175 };
3176
3177 static int hwsim_init_netlink(void)
3178 {
3179 int rc;
3180
3181 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3182
3183 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3184 hwsim_ops,
3185 hwsim_mcgrps);
3186 if (rc)
3187 goto failure;
3188
3189 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3190 if (rc) {
3191 genl_unregister_family(&hwsim_genl_family);
3192 goto failure;
3193 }
3194
3195 return 0;
3196
3197 failure:
3198 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3199 return -EINVAL;
3200 }
3201
3202 static void hwsim_exit_netlink(void)
3203 {
3204 /* unregister the notifier */
3205 netlink_unregister_notifier(&hwsim_netlink_notifier);
3206 /* unregister the family */
3207 genl_unregister_family(&hwsim_genl_family);
3208 }
3209
3210 static int __init init_mac80211_hwsim(void)
3211 {
3212 int i, err;
3213
3214 if (radios < 0 || radios > 100)
3215 return -EINVAL;
3216
3217 if (channels < 1)
3218 return -EINVAL;
3219
3220 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3221 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3222 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3223 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3224 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3225 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3226 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3227 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3228 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3229 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3230 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3231 mac80211_hwsim_assign_vif_chanctx;
3232 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3233 mac80211_hwsim_unassign_vif_chanctx;
3234
3235 spin_lock_init(&hwsim_radio_lock);
3236 INIT_LIST_HEAD(&hwsim_radios);
3237
3238 err = platform_driver_register(&mac80211_hwsim_driver);
3239 if (err)
3240 return err;
3241
3242 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3243 if (IS_ERR(hwsim_class)) {
3244 err = PTR_ERR(hwsim_class);
3245 goto out_unregister_driver;
3246 }
3247
3248 err = hwsim_init_netlink();
3249 if (err < 0)
3250 goto out_unregister_driver;
3251
3252 for (i = 0; i < radios; i++) {
3253 struct hwsim_new_radio_params param = { 0 };
3254
3255 param.channels = channels;
3256
3257 switch (regtest) {
3258 case HWSIM_REGTEST_DIFF_COUNTRY:
3259 if (i < ARRAY_SIZE(hwsim_alpha2s))
3260 param.reg_alpha2 = hwsim_alpha2s[i];
3261 break;
3262 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3263 if (!i)
3264 param.reg_alpha2 = hwsim_alpha2s[0];
3265 break;
3266 case HWSIM_REGTEST_STRICT_ALL:
3267 param.reg_strict = true;
3268 case HWSIM_REGTEST_DRIVER_REG_ALL:
3269 param.reg_alpha2 = hwsim_alpha2s[0];
3270 break;
3271 case HWSIM_REGTEST_WORLD_ROAM:
3272 if (i == 0)
3273 param.regd = &hwsim_world_regdom_custom_01;
3274 break;
3275 case HWSIM_REGTEST_CUSTOM_WORLD:
3276 param.regd = &hwsim_world_regdom_custom_01;
3277 break;
3278 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3279 if (i == 0)
3280 param.regd = &hwsim_world_regdom_custom_01;
3281 else if (i == 1)
3282 param.regd = &hwsim_world_regdom_custom_02;
3283 break;
3284 case HWSIM_REGTEST_STRICT_FOLLOW:
3285 if (i == 0) {
3286 param.reg_strict = true;
3287 param.reg_alpha2 = hwsim_alpha2s[0];
3288 }
3289 break;
3290 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3291 if (i == 0) {
3292 param.reg_strict = true;
3293 param.reg_alpha2 = hwsim_alpha2s[0];
3294 } else if (i == 1) {
3295 param.reg_alpha2 = hwsim_alpha2s[1];
3296 }
3297 break;
3298 case HWSIM_REGTEST_ALL:
3299 switch (i) {
3300 case 0:
3301 param.regd = &hwsim_world_regdom_custom_01;
3302 break;
3303 case 1:
3304 param.regd = &hwsim_world_regdom_custom_02;
3305 break;
3306 case 2:
3307 param.reg_alpha2 = hwsim_alpha2s[0];
3308 break;
3309 case 3:
3310 param.reg_alpha2 = hwsim_alpha2s[1];
3311 break;
3312 case 4:
3313 param.reg_strict = true;
3314 param.reg_alpha2 = hwsim_alpha2s[2];
3315 break;
3316 }
3317 break;
3318 default:
3319 break;
3320 }
3321
3322 param.p2p_device = support_p2p_device;
3323 param.use_chanctx = channels > 1;
3324
3325 err = mac80211_hwsim_new_radio(NULL, &param);
3326 if (err < 0)
3327 goto out_free_radios;
3328 }
3329
3330 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3331 hwsim_mon_setup);
3332 if (hwsim_mon == NULL) {
3333 err = -ENOMEM;
3334 goto out_free_radios;
3335 }
3336
3337 rtnl_lock();
3338 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3339 if (err < 0) {
3340 rtnl_unlock();
3341 goto out_free_radios;
3342 }
3343
3344 err = register_netdevice(hwsim_mon);
3345 if (err < 0) {
3346 rtnl_unlock();
3347 goto out_free_mon;
3348 }
3349 rtnl_unlock();
3350
3351 return 0;
3352
3353 out_free_mon:
3354 free_netdev(hwsim_mon);
3355 out_free_radios:
3356 mac80211_hwsim_free();
3357 out_unregister_driver:
3358 platform_driver_unregister(&mac80211_hwsim_driver);
3359 return err;
3360 }
3361 module_init(init_mac80211_hwsim);
3362
3363 static void __exit exit_mac80211_hwsim(void)
3364 {
3365 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3366
3367 hwsim_exit_netlink();
3368
3369 mac80211_hwsim_free();
3370 unregister_netdev(hwsim_mon);
3371 platform_driver_unregister(&mac80211_hwsim_driver);
3372 }
3373 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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