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Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
[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,
995 ETH_ALEN, data->addresses[1].addr))
996 goto nla_put_failure;
997
998 /* We get the skb->data */
999 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1000 goto nla_put_failure;
1001
1002 /* We get the flags for this transmission, and we translate them to
1003 wmediumd flags */
1004
1005 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1006 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1007
1008 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1009 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1010
1011 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1012 goto nla_put_failure;
1013
1014 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1015 goto nla_put_failure;
1016
1017 /* We get the tx control (rate and retries) info*/
1018
1019 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1020 tx_attempts[i].idx = info->status.rates[i].idx;
1021 tx_attempts[i].count = info->status.rates[i].count;
1022 }
1023
1024 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1025 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1026 tx_attempts))
1027 goto nla_put_failure;
1028
1029 /* We create a cookie to identify this skb */
1030 data->pending_cookie++;
1031 cookie = data->pending_cookie;
1032 info->rate_driver_data[0] = (void *)cookie;
1033 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, cookie))
1034 goto nla_put_failure;
1035
1036 genlmsg_end(skb, msg_head);
1037 if (genlmsg_unicast(&init_net, skb, dst_portid))
1038 goto err_free_txskb;
1039
1040 /* Enqueue the packet */
1041 skb_queue_tail(&data->pending, my_skb);
1042 data->tx_pkts++;
1043 data->tx_bytes += my_skb->len;
1044 return;
1045
1046 nla_put_failure:
1047 nlmsg_free(skb);
1048 err_free_txskb:
1049 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1050 ieee80211_free_txskb(hw, my_skb);
1051 data->tx_failed++;
1052 }
1053
1054 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1055 struct ieee80211_channel *c2)
1056 {
1057 if (!c1 || !c2)
1058 return false;
1059
1060 return c1->center_freq == c2->center_freq;
1061 }
1062
1063 struct tx_iter_data {
1064 struct ieee80211_channel *channel;
1065 bool receive;
1066 };
1067
1068 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1069 struct ieee80211_vif *vif)
1070 {
1071 struct tx_iter_data *data = _data;
1072
1073 if (!vif->chanctx_conf)
1074 return;
1075
1076 if (!hwsim_chans_compat(data->channel,
1077 rcu_dereference(vif->chanctx_conf)->def.chan))
1078 return;
1079
1080 data->receive = true;
1081 }
1082
1083 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1084 {
1085 /*
1086 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1087 * e.g. like this:
1088 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1089 * (but you should use a valid OUI, not that)
1090 *
1091 * If anyone wants to 'donate' a radiotap OUI/subns code
1092 * please send a patch removing this #ifdef and changing
1093 * the values accordingly.
1094 */
1095 #ifdef HWSIM_RADIOTAP_OUI
1096 struct ieee80211_vendor_radiotap *rtap;
1097
1098 /*
1099 * Note that this code requires the headroom in the SKB
1100 * that was allocated earlier.
1101 */
1102 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1103 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1104 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1105 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1106 rtap->subns = 127;
1107
1108 /*
1109 * Radiotap vendor namespaces can (and should) also be
1110 * split into fields by using the standard radiotap
1111 * presence bitmap mechanism. Use just BIT(0) here for
1112 * the presence bitmap.
1113 */
1114 rtap->present = BIT(0);
1115 /* We have 8 bytes of (dummy) data */
1116 rtap->len = 8;
1117 /* For testing, also require it to be aligned */
1118 rtap->align = 8;
1119 /* And also test that padding works, 4 bytes */
1120 rtap->pad = 4;
1121 /* push the data */
1122 memcpy(rtap->data, "ABCDEFGH", 8);
1123 /* make sure to clear padding, mac80211 doesn't */
1124 memset(rtap->data + 8, 0, 4);
1125
1126 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1127 #endif
1128 }
1129
1130 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1131 struct sk_buff *skb,
1132 struct ieee80211_channel *chan)
1133 {
1134 struct mac80211_hwsim_data *data = hw->priv, *data2;
1135 bool ack = false;
1136 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1137 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1138 struct ieee80211_rx_status rx_status;
1139 u64 now;
1140
1141 memset(&rx_status, 0, sizeof(rx_status));
1142 rx_status.flag |= RX_FLAG_MACTIME_START;
1143 rx_status.freq = chan->center_freq;
1144 rx_status.band = chan->band;
1145 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1146 rx_status.rate_idx =
1147 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1148 rx_status.vht_nss =
1149 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1150 rx_status.flag |= RX_FLAG_VHT;
1151 } else {
1152 rx_status.rate_idx = info->control.rates[0].idx;
1153 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1154 rx_status.flag |= RX_FLAG_HT;
1155 }
1156 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1157 rx_status.flag |= RX_FLAG_40MHZ;
1158 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1159 rx_status.flag |= RX_FLAG_SHORT_GI;
1160 /* TODO: simulate real signal strength (and optional packet loss) */
1161 rx_status.signal = data->power_level - 50;
1162
1163 if (data->ps != PS_DISABLED)
1164 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1165
1166 /* release the skb's source info */
1167 skb_orphan(skb);
1168 skb_dst_drop(skb);
1169 skb->mark = 0;
1170 secpath_reset(skb);
1171 nf_reset(skb);
1172
1173 /*
1174 * Get absolute mactime here so all HWs RX at the "same time", and
1175 * absolute TX time for beacon mactime so the timestamp matches.
1176 * Giving beacons a different mactime than non-beacons looks messy, but
1177 * it helps the Toffset be exact and a ~10us mactime discrepancy
1178 * probably doesn't really matter.
1179 */
1180 if (ieee80211_is_beacon(hdr->frame_control) ||
1181 ieee80211_is_probe_resp(hdr->frame_control))
1182 now = data->abs_bcn_ts;
1183 else
1184 now = mac80211_hwsim_get_tsf_raw();
1185
1186 /* Copy skb to all enabled radios that are on the current frequency */
1187 spin_lock(&hwsim_radio_lock);
1188 list_for_each_entry(data2, &hwsim_radios, list) {
1189 struct sk_buff *nskb;
1190 struct tx_iter_data tx_iter_data = {
1191 .receive = false,
1192 .channel = chan,
1193 };
1194
1195 if (data == data2)
1196 continue;
1197
1198 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1199 !hwsim_ps_rx_ok(data2, skb))
1200 continue;
1201
1202 if (!(data->group & data2->group))
1203 continue;
1204
1205 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1206 !hwsim_chans_compat(chan, data2->channel)) {
1207 ieee80211_iterate_active_interfaces_atomic(
1208 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1209 mac80211_hwsim_tx_iter, &tx_iter_data);
1210 if (!tx_iter_data.receive)
1211 continue;
1212 }
1213
1214 /*
1215 * reserve some space for our vendor and the normal
1216 * radiotap header, since we're copying anyway
1217 */
1218 if (skb->len < PAGE_SIZE && paged_rx) {
1219 struct page *page = alloc_page(GFP_ATOMIC);
1220
1221 if (!page)
1222 continue;
1223
1224 nskb = dev_alloc_skb(128);
1225 if (!nskb) {
1226 __free_page(page);
1227 continue;
1228 }
1229
1230 memcpy(page_address(page), skb->data, skb->len);
1231 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1232 } else {
1233 nskb = skb_copy(skb, GFP_ATOMIC);
1234 if (!nskb)
1235 continue;
1236 }
1237
1238 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1239 ack = true;
1240
1241 rx_status.mactime = now + data2->tsf_offset;
1242
1243 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1244
1245 mac80211_hwsim_add_vendor_rtap(nskb);
1246
1247 data2->rx_pkts++;
1248 data2->rx_bytes += nskb->len;
1249 ieee80211_rx_irqsafe(data2->hw, nskb);
1250 }
1251 spin_unlock(&hwsim_radio_lock);
1252
1253 return ack;
1254 }
1255
1256 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1257 struct ieee80211_tx_control *control,
1258 struct sk_buff *skb)
1259 {
1260 struct mac80211_hwsim_data *data = hw->priv;
1261 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1262 struct ieee80211_hdr *hdr = (void *)skb->data;
1263 struct ieee80211_chanctx_conf *chanctx_conf;
1264 struct ieee80211_channel *channel;
1265 bool ack;
1266 u32 _portid;
1267
1268 if (WARN_ON(skb->len < 10)) {
1269 /* Should not happen; just a sanity check for addr1 use */
1270 ieee80211_free_txskb(hw, skb);
1271 return;
1272 }
1273
1274 if (!data->use_chanctx) {
1275 channel = data->channel;
1276 } else if (txi->hw_queue == 4) {
1277 channel = data->tmp_chan;
1278 } else {
1279 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1280 if (chanctx_conf)
1281 channel = chanctx_conf->def.chan;
1282 else
1283 channel = NULL;
1284 }
1285
1286 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1287 ieee80211_free_txskb(hw, skb);
1288 return;
1289 }
1290
1291 if (data->idle && !data->tmp_chan) {
1292 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1293 ieee80211_free_txskb(hw, skb);
1294 return;
1295 }
1296
1297 if (txi->control.vif)
1298 hwsim_check_magic(txi->control.vif);
1299 if (control->sta)
1300 hwsim_check_sta_magic(control->sta);
1301
1302 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1303 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1304 txi->control.rates,
1305 ARRAY_SIZE(txi->control.rates));
1306
1307 txi->rate_driver_data[0] = channel;
1308
1309 if (skb->len >= 24 + 8 &&
1310 ieee80211_is_probe_resp(hdr->frame_control)) {
1311 /* fake header transmission time */
1312 struct ieee80211_mgmt *mgmt;
1313 struct ieee80211_rate *txrate;
1314 u64 ts;
1315
1316 mgmt = (struct ieee80211_mgmt *)skb->data;
1317 txrate = ieee80211_get_tx_rate(hw, txi);
1318 ts = mac80211_hwsim_get_tsf_raw();
1319 mgmt->u.probe_resp.timestamp =
1320 cpu_to_le64(ts + data->tsf_offset +
1321 24 * 8 * 10 / txrate->bitrate);
1322 }
1323
1324 mac80211_hwsim_monitor_rx(hw, skb, channel);
1325
1326 /* wmediumd mode check */
1327 _portid = ACCESS_ONCE(wmediumd_portid);
1328
1329 if (_portid)
1330 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1331
1332 /* NO wmediumd detected, perfect medium simulation */
1333 data->tx_pkts++;
1334 data->tx_bytes += skb->len;
1335 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1336
1337 if (ack && skb->len >= 16) {
1338 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1339 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1340 }
1341
1342 ieee80211_tx_info_clear_status(txi);
1343
1344 /* frame was transmitted at most favorable rate at first attempt */
1345 txi->control.rates[0].count = 1;
1346 txi->control.rates[1].idx = -1;
1347
1348 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1349 txi->flags |= IEEE80211_TX_STAT_ACK;
1350 ieee80211_tx_status_irqsafe(hw, skb);
1351 }
1352
1353
1354 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1355 {
1356 struct mac80211_hwsim_data *data = hw->priv;
1357 wiphy_debug(hw->wiphy, "%s\n", __func__);
1358 data->started = true;
1359 return 0;
1360 }
1361
1362
1363 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1364 {
1365 struct mac80211_hwsim_data *data = hw->priv;
1366 data->started = false;
1367 tasklet_hrtimer_cancel(&data->beacon_timer);
1368 wiphy_debug(hw->wiphy, "%s\n", __func__);
1369 }
1370
1371
1372 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1373 struct ieee80211_vif *vif)
1374 {
1375 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1376 __func__, ieee80211_vif_type_p2p(vif),
1377 vif->addr);
1378 hwsim_set_magic(vif);
1379
1380 vif->cab_queue = 0;
1381 vif->hw_queue[IEEE80211_AC_VO] = 0;
1382 vif->hw_queue[IEEE80211_AC_VI] = 1;
1383 vif->hw_queue[IEEE80211_AC_BE] = 2;
1384 vif->hw_queue[IEEE80211_AC_BK] = 3;
1385
1386 return 0;
1387 }
1388
1389
1390 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1391 struct ieee80211_vif *vif,
1392 enum nl80211_iftype newtype,
1393 bool newp2p)
1394 {
1395 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1396 wiphy_debug(hw->wiphy,
1397 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1398 __func__, ieee80211_vif_type_p2p(vif),
1399 newtype, vif->addr);
1400 hwsim_check_magic(vif);
1401
1402 /*
1403 * interface may change from non-AP to AP in
1404 * which case this needs to be set up again
1405 */
1406 vif->cab_queue = 0;
1407
1408 return 0;
1409 }
1410
1411 static void mac80211_hwsim_remove_interface(
1412 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1413 {
1414 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1415 __func__, ieee80211_vif_type_p2p(vif),
1416 vif->addr);
1417 hwsim_check_magic(vif);
1418 hwsim_clear_magic(vif);
1419 }
1420
1421 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1422 struct sk_buff *skb,
1423 struct ieee80211_channel *chan)
1424 {
1425 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1426
1427 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1428 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1429 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1430 txi->control.rates,
1431 ARRAY_SIZE(txi->control.rates));
1432 }
1433
1434 mac80211_hwsim_monitor_rx(hw, skb, chan);
1435
1436 if (_pid)
1437 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1438
1439 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1440 dev_kfree_skb(skb);
1441 }
1442
1443 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1444 struct ieee80211_vif *vif)
1445 {
1446 struct mac80211_hwsim_data *data = arg;
1447 struct ieee80211_hw *hw = data->hw;
1448 struct ieee80211_tx_info *info;
1449 struct ieee80211_rate *txrate;
1450 struct ieee80211_mgmt *mgmt;
1451 struct sk_buff *skb;
1452
1453 hwsim_check_magic(vif);
1454
1455 if (vif->type != NL80211_IFTYPE_AP &&
1456 vif->type != NL80211_IFTYPE_MESH_POINT &&
1457 vif->type != NL80211_IFTYPE_ADHOC)
1458 return;
1459
1460 skb = ieee80211_beacon_get(hw, vif);
1461 if (skb == NULL)
1462 return;
1463 info = IEEE80211_SKB_CB(skb);
1464 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1465 ieee80211_get_tx_rates(vif, NULL, skb,
1466 info->control.rates,
1467 ARRAY_SIZE(info->control.rates));
1468
1469 txrate = ieee80211_get_tx_rate(hw, info);
1470
1471 mgmt = (struct ieee80211_mgmt *) skb->data;
1472 /* fake header transmission time */
1473 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1474 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1475 data->tsf_offset +
1476 24 * 8 * 10 / txrate->bitrate);
1477
1478 mac80211_hwsim_tx_frame(hw, skb,
1479 rcu_dereference(vif->chanctx_conf)->def.chan);
1480
1481 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1482 ieee80211_csa_finish(vif);
1483 }
1484
1485 static enum hrtimer_restart
1486 mac80211_hwsim_beacon(struct hrtimer *timer)
1487 {
1488 struct mac80211_hwsim_data *data =
1489 container_of(timer, struct mac80211_hwsim_data,
1490 beacon_timer.timer);
1491 struct ieee80211_hw *hw = data->hw;
1492 u64 bcn_int = data->beacon_int;
1493 ktime_t next_bcn;
1494
1495 if (!data->started)
1496 goto out;
1497
1498 ieee80211_iterate_active_interfaces_atomic(
1499 hw, IEEE80211_IFACE_ITER_NORMAL,
1500 mac80211_hwsim_beacon_tx, data);
1501
1502 /* beacon at new TBTT + beacon interval */
1503 if (data->bcn_delta) {
1504 bcn_int -= data->bcn_delta;
1505 data->bcn_delta = 0;
1506 }
1507
1508 next_bcn = ktime_add(hrtimer_get_expires(timer),
1509 ns_to_ktime(bcn_int * 1000));
1510 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1511 out:
1512 return HRTIMER_NORESTART;
1513 }
1514
1515 static const char * const hwsim_chanwidths[] = {
1516 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1517 [NL80211_CHAN_WIDTH_20] = "ht20",
1518 [NL80211_CHAN_WIDTH_40] = "ht40",
1519 [NL80211_CHAN_WIDTH_80] = "vht80",
1520 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1521 [NL80211_CHAN_WIDTH_160] = "vht160",
1522 };
1523
1524 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1525 {
1526 struct mac80211_hwsim_data *data = hw->priv;
1527 struct ieee80211_conf *conf = &hw->conf;
1528 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1529 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1530 [IEEE80211_SMPS_OFF] = "off",
1531 [IEEE80211_SMPS_STATIC] = "static",
1532 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1533 };
1534
1535 if (conf->chandef.chan)
1536 wiphy_debug(hw->wiphy,
1537 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1538 __func__,
1539 conf->chandef.chan->center_freq,
1540 conf->chandef.center_freq1,
1541 conf->chandef.center_freq2,
1542 hwsim_chanwidths[conf->chandef.width],
1543 !!(conf->flags & IEEE80211_CONF_IDLE),
1544 !!(conf->flags & IEEE80211_CONF_PS),
1545 smps_modes[conf->smps_mode]);
1546 else
1547 wiphy_debug(hw->wiphy,
1548 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1549 __func__,
1550 !!(conf->flags & IEEE80211_CONF_IDLE),
1551 !!(conf->flags & IEEE80211_CONF_PS),
1552 smps_modes[conf->smps_mode]);
1553
1554 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1555
1556 data->channel = conf->chandef.chan;
1557
1558 WARN_ON(data->channel && data->use_chanctx);
1559
1560 data->power_level = conf->power_level;
1561 if (!data->started || !data->beacon_int)
1562 tasklet_hrtimer_cancel(&data->beacon_timer);
1563 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1564 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1565 u32 bcn_int = data->beacon_int;
1566 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1567
1568 tasklet_hrtimer_start(&data->beacon_timer,
1569 ns_to_ktime(until_tbtt * 1000),
1570 HRTIMER_MODE_REL);
1571 }
1572
1573 return 0;
1574 }
1575
1576
1577 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1578 unsigned int changed_flags,
1579 unsigned int *total_flags,u64 multicast)
1580 {
1581 struct mac80211_hwsim_data *data = hw->priv;
1582
1583 wiphy_debug(hw->wiphy, "%s\n", __func__);
1584
1585 data->rx_filter = 0;
1586 if (*total_flags & FIF_ALLMULTI)
1587 data->rx_filter |= FIF_ALLMULTI;
1588
1589 *total_flags = data->rx_filter;
1590 }
1591
1592 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1593 struct ieee80211_vif *vif)
1594 {
1595 unsigned int *count = data;
1596 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1597
1598 if (vp->bcn_en)
1599 (*count)++;
1600 }
1601
1602 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1603 struct ieee80211_vif *vif,
1604 struct ieee80211_bss_conf *info,
1605 u32 changed)
1606 {
1607 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1608 struct mac80211_hwsim_data *data = hw->priv;
1609
1610 hwsim_check_magic(vif);
1611
1612 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1613 __func__, changed, vif->addr);
1614
1615 if (changed & BSS_CHANGED_BSSID) {
1616 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1617 __func__, info->bssid);
1618 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1619 }
1620
1621 if (changed & BSS_CHANGED_ASSOC) {
1622 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1623 info->assoc, info->aid);
1624 vp->assoc = info->assoc;
1625 vp->aid = info->aid;
1626 }
1627
1628 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1629 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1630 info->enable_beacon, info->beacon_int);
1631 vp->bcn_en = info->enable_beacon;
1632 if (data->started &&
1633 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1634 info->enable_beacon) {
1635 u64 tsf, until_tbtt;
1636 u32 bcn_int;
1637 data->beacon_int = info->beacon_int * 1024;
1638 tsf = mac80211_hwsim_get_tsf(hw, vif);
1639 bcn_int = data->beacon_int;
1640 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1641 tasklet_hrtimer_start(&data->beacon_timer,
1642 ns_to_ktime(until_tbtt * 1000),
1643 HRTIMER_MODE_REL);
1644 } else if (!info->enable_beacon) {
1645 unsigned int count = 0;
1646 ieee80211_iterate_active_interfaces_atomic(
1647 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1648 mac80211_hwsim_bcn_en_iter, &count);
1649 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1650 count);
1651 if (count == 0) {
1652 tasklet_hrtimer_cancel(&data->beacon_timer);
1653 data->beacon_int = 0;
1654 }
1655 }
1656 }
1657
1658 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1659 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1660 info->use_cts_prot);
1661 }
1662
1663 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1664 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1665 info->use_short_preamble);
1666 }
1667
1668 if (changed & BSS_CHANGED_ERP_SLOT) {
1669 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1670 }
1671
1672 if (changed & BSS_CHANGED_HT) {
1673 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1674 info->ht_operation_mode);
1675 }
1676
1677 if (changed & BSS_CHANGED_BASIC_RATES) {
1678 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1679 (unsigned long long) info->basic_rates);
1680 }
1681
1682 if (changed & BSS_CHANGED_TXPOWER)
1683 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1684 }
1685
1686 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1687 struct ieee80211_vif *vif,
1688 struct ieee80211_sta *sta)
1689 {
1690 hwsim_check_magic(vif);
1691 hwsim_set_sta_magic(sta);
1692
1693 return 0;
1694 }
1695
1696 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1697 struct ieee80211_vif *vif,
1698 struct ieee80211_sta *sta)
1699 {
1700 hwsim_check_magic(vif);
1701 hwsim_clear_sta_magic(sta);
1702
1703 return 0;
1704 }
1705
1706 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1707 struct ieee80211_vif *vif,
1708 enum sta_notify_cmd cmd,
1709 struct ieee80211_sta *sta)
1710 {
1711 hwsim_check_magic(vif);
1712
1713 switch (cmd) {
1714 case STA_NOTIFY_SLEEP:
1715 case STA_NOTIFY_AWAKE:
1716 /* TODO: make good use of these flags */
1717 break;
1718 default:
1719 WARN(1, "Invalid sta notify: %d\n", cmd);
1720 break;
1721 }
1722 }
1723
1724 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1725 struct ieee80211_sta *sta,
1726 bool set)
1727 {
1728 hwsim_check_sta_magic(sta);
1729 return 0;
1730 }
1731
1732 static int mac80211_hwsim_conf_tx(
1733 struct ieee80211_hw *hw,
1734 struct ieee80211_vif *vif, u16 queue,
1735 const struct ieee80211_tx_queue_params *params)
1736 {
1737 wiphy_debug(hw->wiphy,
1738 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1739 __func__, queue,
1740 params->txop, params->cw_min,
1741 params->cw_max, params->aifs);
1742 return 0;
1743 }
1744
1745 static int mac80211_hwsim_get_survey(
1746 struct ieee80211_hw *hw, int idx,
1747 struct survey_info *survey)
1748 {
1749 struct ieee80211_conf *conf = &hw->conf;
1750
1751 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1752
1753 if (idx != 0)
1754 return -ENOENT;
1755
1756 /* Current channel */
1757 survey->channel = conf->chandef.chan;
1758
1759 /*
1760 * Magically conjured noise level --- this is only ok for simulated hardware.
1761 *
1762 * A real driver which cannot determine the real channel noise MUST NOT
1763 * report any noise, especially not a magically conjured one :-)
1764 */
1765 survey->filled = SURVEY_INFO_NOISE_DBM;
1766 survey->noise = -92;
1767
1768 return 0;
1769 }
1770
1771 #ifdef CONFIG_NL80211_TESTMODE
1772 /*
1773 * This section contains example code for using netlink
1774 * attributes with the testmode command in nl80211.
1775 */
1776
1777 /* These enums need to be kept in sync with userspace */
1778 enum hwsim_testmode_attr {
1779 __HWSIM_TM_ATTR_INVALID = 0,
1780 HWSIM_TM_ATTR_CMD = 1,
1781 HWSIM_TM_ATTR_PS = 2,
1782
1783 /* keep last */
1784 __HWSIM_TM_ATTR_AFTER_LAST,
1785 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1786 };
1787
1788 enum hwsim_testmode_cmd {
1789 HWSIM_TM_CMD_SET_PS = 0,
1790 HWSIM_TM_CMD_GET_PS = 1,
1791 HWSIM_TM_CMD_STOP_QUEUES = 2,
1792 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1793 };
1794
1795 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1796 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1797 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1798 };
1799
1800 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1801 struct ieee80211_vif *vif,
1802 void *data, int len)
1803 {
1804 struct mac80211_hwsim_data *hwsim = hw->priv;
1805 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1806 struct sk_buff *skb;
1807 int err, ps;
1808
1809 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1810 hwsim_testmode_policy);
1811 if (err)
1812 return err;
1813
1814 if (!tb[HWSIM_TM_ATTR_CMD])
1815 return -EINVAL;
1816
1817 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1818 case HWSIM_TM_CMD_SET_PS:
1819 if (!tb[HWSIM_TM_ATTR_PS])
1820 return -EINVAL;
1821 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1822 return hwsim_fops_ps_write(hwsim, ps);
1823 case HWSIM_TM_CMD_GET_PS:
1824 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1825 nla_total_size(sizeof(u32)));
1826 if (!skb)
1827 return -ENOMEM;
1828 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1829 goto nla_put_failure;
1830 return cfg80211_testmode_reply(skb);
1831 case HWSIM_TM_CMD_STOP_QUEUES:
1832 ieee80211_stop_queues(hw);
1833 return 0;
1834 case HWSIM_TM_CMD_WAKE_QUEUES:
1835 ieee80211_wake_queues(hw);
1836 return 0;
1837 default:
1838 return -EOPNOTSUPP;
1839 }
1840
1841 nla_put_failure:
1842 kfree_skb(skb);
1843 return -ENOBUFS;
1844 }
1845 #endif
1846
1847 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1848 struct ieee80211_vif *vif,
1849 enum ieee80211_ampdu_mlme_action action,
1850 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1851 u8 buf_size, bool amsdu)
1852 {
1853 switch (action) {
1854 case IEEE80211_AMPDU_TX_START:
1855 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1856 break;
1857 case IEEE80211_AMPDU_TX_STOP_CONT:
1858 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1859 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1860 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1861 break;
1862 case IEEE80211_AMPDU_TX_OPERATIONAL:
1863 break;
1864 case IEEE80211_AMPDU_RX_START:
1865 case IEEE80211_AMPDU_RX_STOP:
1866 break;
1867 default:
1868 return -EOPNOTSUPP;
1869 }
1870
1871 return 0;
1872 }
1873
1874 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1875 struct ieee80211_vif *vif,
1876 u32 queues, bool drop)
1877 {
1878 /* Not implemented, queues only on kernel side */
1879 }
1880
1881 static void hw_scan_work(struct work_struct *work)
1882 {
1883 struct mac80211_hwsim_data *hwsim =
1884 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1885 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1886 int dwell, i;
1887
1888 mutex_lock(&hwsim->mutex);
1889 if (hwsim->scan_chan_idx >= req->n_channels) {
1890 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1891 ieee80211_scan_completed(hwsim->hw, false);
1892 hwsim->hw_scan_request = NULL;
1893 hwsim->hw_scan_vif = NULL;
1894 hwsim->tmp_chan = NULL;
1895 mutex_unlock(&hwsim->mutex);
1896 return;
1897 }
1898
1899 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1900 req->channels[hwsim->scan_chan_idx]->center_freq);
1901
1902 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1903 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1904 IEEE80211_CHAN_RADAR) ||
1905 !req->n_ssids) {
1906 dwell = 120;
1907 } else {
1908 dwell = 30;
1909 /* send probes */
1910 for (i = 0; i < req->n_ssids; i++) {
1911 struct sk_buff *probe;
1912
1913 probe = ieee80211_probereq_get(hwsim->hw,
1914 hwsim->scan_addr,
1915 req->ssids[i].ssid,
1916 req->ssids[i].ssid_len,
1917 req->ie_len);
1918 if (!probe)
1919 continue;
1920
1921 if (req->ie_len)
1922 memcpy(skb_put(probe, req->ie_len), req->ie,
1923 req->ie_len);
1924
1925 local_bh_disable();
1926 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1927 hwsim->tmp_chan);
1928 local_bh_enable();
1929 }
1930 }
1931 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1932 msecs_to_jiffies(dwell));
1933 hwsim->scan_chan_idx++;
1934 mutex_unlock(&hwsim->mutex);
1935 }
1936
1937 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1938 struct ieee80211_vif *vif,
1939 struct ieee80211_scan_request *hw_req)
1940 {
1941 struct mac80211_hwsim_data *hwsim = hw->priv;
1942 struct cfg80211_scan_request *req = &hw_req->req;
1943
1944 mutex_lock(&hwsim->mutex);
1945 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1946 mutex_unlock(&hwsim->mutex);
1947 return -EBUSY;
1948 }
1949 hwsim->hw_scan_request = req;
1950 hwsim->hw_scan_vif = vif;
1951 hwsim->scan_chan_idx = 0;
1952 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1953 get_random_mask_addr(hwsim->scan_addr,
1954 hw_req->req.mac_addr,
1955 hw_req->req.mac_addr_mask);
1956 else
1957 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1958 mutex_unlock(&hwsim->mutex);
1959
1960 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1961
1962 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1963
1964 return 0;
1965 }
1966
1967 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1968 struct ieee80211_vif *vif)
1969 {
1970 struct mac80211_hwsim_data *hwsim = hw->priv;
1971
1972 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1973
1974 cancel_delayed_work_sync(&hwsim->hw_scan);
1975
1976 mutex_lock(&hwsim->mutex);
1977 ieee80211_scan_completed(hwsim->hw, true);
1978 hwsim->tmp_chan = NULL;
1979 hwsim->hw_scan_request = NULL;
1980 hwsim->hw_scan_vif = NULL;
1981 mutex_unlock(&hwsim->mutex);
1982 }
1983
1984 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1985 struct ieee80211_vif *vif,
1986 const u8 *mac_addr)
1987 {
1988 struct mac80211_hwsim_data *hwsim = hw->priv;
1989
1990 mutex_lock(&hwsim->mutex);
1991
1992 if (hwsim->scanning) {
1993 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1994 goto out;
1995 }
1996
1997 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1998
1999 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2000 hwsim->scanning = true;
2001
2002 out:
2003 mutex_unlock(&hwsim->mutex);
2004 }
2005
2006 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2007 struct ieee80211_vif *vif)
2008 {
2009 struct mac80211_hwsim_data *hwsim = hw->priv;
2010
2011 mutex_lock(&hwsim->mutex);
2012
2013 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2014 hwsim->scanning = false;
2015 eth_zero_addr(hwsim->scan_addr);
2016
2017 mutex_unlock(&hwsim->mutex);
2018 }
2019
2020 static void hw_roc_start(struct work_struct *work)
2021 {
2022 struct mac80211_hwsim_data *hwsim =
2023 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2024
2025 mutex_lock(&hwsim->mutex);
2026
2027 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2028 hwsim->tmp_chan = hwsim->roc_chan;
2029 ieee80211_ready_on_channel(hwsim->hw);
2030
2031 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2032 msecs_to_jiffies(hwsim->roc_duration));
2033
2034 mutex_unlock(&hwsim->mutex);
2035 }
2036
2037 static void hw_roc_done(struct work_struct *work)
2038 {
2039 struct mac80211_hwsim_data *hwsim =
2040 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2041
2042 mutex_lock(&hwsim->mutex);
2043 ieee80211_remain_on_channel_expired(hwsim->hw);
2044 hwsim->tmp_chan = NULL;
2045 mutex_unlock(&hwsim->mutex);
2046
2047 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2048 }
2049
2050 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2051 struct ieee80211_vif *vif,
2052 struct ieee80211_channel *chan,
2053 int duration,
2054 enum ieee80211_roc_type type)
2055 {
2056 struct mac80211_hwsim_data *hwsim = hw->priv;
2057
2058 mutex_lock(&hwsim->mutex);
2059 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2060 mutex_unlock(&hwsim->mutex);
2061 return -EBUSY;
2062 }
2063
2064 hwsim->roc_chan = chan;
2065 hwsim->roc_duration = duration;
2066 mutex_unlock(&hwsim->mutex);
2067
2068 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2069 chan->center_freq, duration);
2070 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2071
2072 return 0;
2073 }
2074
2075 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2076 {
2077 struct mac80211_hwsim_data *hwsim = hw->priv;
2078
2079 cancel_delayed_work_sync(&hwsim->roc_start);
2080 cancel_delayed_work_sync(&hwsim->roc_done);
2081
2082 mutex_lock(&hwsim->mutex);
2083 hwsim->tmp_chan = NULL;
2084 mutex_unlock(&hwsim->mutex);
2085
2086 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2087
2088 return 0;
2089 }
2090
2091 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2092 struct ieee80211_chanctx_conf *ctx)
2093 {
2094 hwsim_set_chanctx_magic(ctx);
2095 wiphy_debug(hw->wiphy,
2096 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2097 ctx->def.chan->center_freq, ctx->def.width,
2098 ctx->def.center_freq1, ctx->def.center_freq2);
2099 return 0;
2100 }
2101
2102 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2103 struct ieee80211_chanctx_conf *ctx)
2104 {
2105 wiphy_debug(hw->wiphy,
2106 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2107 ctx->def.chan->center_freq, ctx->def.width,
2108 ctx->def.center_freq1, ctx->def.center_freq2);
2109 hwsim_check_chanctx_magic(ctx);
2110 hwsim_clear_chanctx_magic(ctx);
2111 }
2112
2113 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2114 struct ieee80211_chanctx_conf *ctx,
2115 u32 changed)
2116 {
2117 hwsim_check_chanctx_magic(ctx);
2118 wiphy_debug(hw->wiphy,
2119 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2120 ctx->def.chan->center_freq, ctx->def.width,
2121 ctx->def.center_freq1, ctx->def.center_freq2);
2122 }
2123
2124 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2125 struct ieee80211_vif *vif,
2126 struct ieee80211_chanctx_conf *ctx)
2127 {
2128 hwsim_check_magic(vif);
2129 hwsim_check_chanctx_magic(ctx);
2130
2131 return 0;
2132 }
2133
2134 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2135 struct ieee80211_vif *vif,
2136 struct ieee80211_chanctx_conf *ctx)
2137 {
2138 hwsim_check_magic(vif);
2139 hwsim_check_chanctx_magic(ctx);
2140 }
2141
2142 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2143 "tx_pkts_nic",
2144 "tx_bytes_nic",
2145 "rx_pkts_nic",
2146 "rx_bytes_nic",
2147 "d_tx_dropped",
2148 "d_tx_failed",
2149 "d_ps_mode",
2150 "d_group",
2151 "d_tx_power",
2152 };
2153
2154 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2155
2156 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2157 struct ieee80211_vif *vif,
2158 u32 sset, u8 *data)
2159 {
2160 if (sset == ETH_SS_STATS)
2161 memcpy(data, *mac80211_hwsim_gstrings_stats,
2162 sizeof(mac80211_hwsim_gstrings_stats));
2163 }
2164
2165 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2166 struct ieee80211_vif *vif, int sset)
2167 {
2168 if (sset == ETH_SS_STATS)
2169 return MAC80211_HWSIM_SSTATS_LEN;
2170 return 0;
2171 }
2172
2173 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2174 struct ieee80211_vif *vif,
2175 struct ethtool_stats *stats, u64 *data)
2176 {
2177 struct mac80211_hwsim_data *ar = hw->priv;
2178 int i = 0;
2179
2180 data[i++] = ar->tx_pkts;
2181 data[i++] = ar->tx_bytes;
2182 data[i++] = ar->rx_pkts;
2183 data[i++] = ar->rx_bytes;
2184 data[i++] = ar->tx_dropped;
2185 data[i++] = ar->tx_failed;
2186 data[i++] = ar->ps;
2187 data[i++] = ar->group;
2188 data[i++] = ar->power_level;
2189
2190 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2191 }
2192
2193 static const struct ieee80211_ops mac80211_hwsim_ops = {
2194 .tx = mac80211_hwsim_tx,
2195 .start = mac80211_hwsim_start,
2196 .stop = mac80211_hwsim_stop,
2197 .add_interface = mac80211_hwsim_add_interface,
2198 .change_interface = mac80211_hwsim_change_interface,
2199 .remove_interface = mac80211_hwsim_remove_interface,
2200 .config = mac80211_hwsim_config,
2201 .configure_filter = mac80211_hwsim_configure_filter,
2202 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2203 .sta_add = mac80211_hwsim_sta_add,
2204 .sta_remove = mac80211_hwsim_sta_remove,
2205 .sta_notify = mac80211_hwsim_sta_notify,
2206 .set_tim = mac80211_hwsim_set_tim,
2207 .conf_tx = mac80211_hwsim_conf_tx,
2208 .get_survey = mac80211_hwsim_get_survey,
2209 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2210 .ampdu_action = mac80211_hwsim_ampdu_action,
2211 .sw_scan_start = mac80211_hwsim_sw_scan,
2212 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2213 .flush = mac80211_hwsim_flush,
2214 .get_tsf = mac80211_hwsim_get_tsf,
2215 .set_tsf = mac80211_hwsim_set_tsf,
2216 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2217 .get_et_stats = mac80211_hwsim_get_et_stats,
2218 .get_et_strings = mac80211_hwsim_get_et_strings,
2219 };
2220
2221 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2222
2223 struct hwsim_new_radio_params {
2224 unsigned int channels;
2225 const char *reg_alpha2;
2226 const struct ieee80211_regdomain *regd;
2227 bool reg_strict;
2228 bool p2p_device;
2229 bool use_chanctx;
2230 bool destroy_on_close;
2231 const char *hwname;
2232 bool no_vif;
2233 };
2234
2235 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2236 struct genl_info *info)
2237 {
2238 if (info)
2239 genl_notify(&hwsim_genl_family, mcast_skb, info,
2240 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2241 else
2242 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2243 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2244 }
2245
2246 static int append_radio_msg(struct sk_buff *skb, int id,
2247 struct hwsim_new_radio_params *param)
2248 {
2249 int ret;
2250
2251 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2252 if (ret < 0)
2253 return ret;
2254
2255 if (param->channels) {
2256 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2257 if (ret < 0)
2258 return ret;
2259 }
2260
2261 if (param->reg_alpha2) {
2262 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2263 param->reg_alpha2);
2264 if (ret < 0)
2265 return ret;
2266 }
2267
2268 if (param->regd) {
2269 int i;
2270
2271 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2272 if (hwsim_world_regdom_custom[i] != param->regd)
2273 continue;
2274
2275 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2276 if (ret < 0)
2277 return ret;
2278 break;
2279 }
2280 }
2281
2282 if (param->reg_strict) {
2283 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2284 if (ret < 0)
2285 return ret;
2286 }
2287
2288 if (param->p2p_device) {
2289 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2290 if (ret < 0)
2291 return ret;
2292 }
2293
2294 if (param->use_chanctx) {
2295 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2296 if (ret < 0)
2297 return ret;
2298 }
2299
2300 if (param->hwname) {
2301 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2302 strlen(param->hwname), param->hwname);
2303 if (ret < 0)
2304 return ret;
2305 }
2306
2307 return 0;
2308 }
2309
2310 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2311 struct hwsim_new_radio_params *param)
2312 {
2313 struct sk_buff *mcast_skb;
2314 void *data;
2315
2316 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2317 if (!mcast_skb)
2318 return;
2319
2320 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2321 HWSIM_CMD_NEW_RADIO);
2322 if (!data)
2323 goto out_err;
2324
2325 if (append_radio_msg(mcast_skb, id, param) < 0)
2326 goto out_err;
2327
2328 genlmsg_end(mcast_skb, data);
2329
2330 hwsim_mcast_config_msg(mcast_skb, info);
2331 return;
2332
2333 out_err:
2334 genlmsg_cancel(mcast_skb, data);
2335 nlmsg_free(mcast_skb);
2336 }
2337
2338 static int mac80211_hwsim_new_radio(struct genl_info *info,
2339 struct hwsim_new_radio_params *param)
2340 {
2341 int err;
2342 u8 addr[ETH_ALEN];
2343 struct mac80211_hwsim_data *data;
2344 struct ieee80211_hw *hw;
2345 enum ieee80211_band band;
2346 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2347 int idx;
2348
2349 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2350 return -EINVAL;
2351
2352 spin_lock_bh(&hwsim_radio_lock);
2353 idx = hwsim_radio_idx++;
2354 spin_unlock_bh(&hwsim_radio_lock);
2355
2356 if (param->use_chanctx)
2357 ops = &mac80211_hwsim_mchan_ops;
2358 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2359 if (!hw) {
2360 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2361 err = -ENOMEM;
2362 goto failed;
2363 }
2364 data = hw->priv;
2365 data->hw = hw;
2366
2367 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2368 if (IS_ERR(data->dev)) {
2369 printk(KERN_DEBUG
2370 "mac80211_hwsim: device_create failed (%ld)\n",
2371 PTR_ERR(data->dev));
2372 err = -ENOMEM;
2373 goto failed_drvdata;
2374 }
2375 data->dev->driver = &mac80211_hwsim_driver.driver;
2376 err = device_bind_driver(data->dev);
2377 if (err != 0) {
2378 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2379 err);
2380 goto failed_bind;
2381 }
2382
2383 skb_queue_head_init(&data->pending);
2384
2385 SET_IEEE80211_DEV(hw, data->dev);
2386 eth_zero_addr(addr);
2387 addr[0] = 0x02;
2388 addr[3] = idx >> 8;
2389 addr[4] = idx;
2390 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2391 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2392 data->addresses[1].addr[0] |= 0x40;
2393 hw->wiphy->n_addresses = 2;
2394 hw->wiphy->addresses = data->addresses;
2395
2396 data->channels = param->channels;
2397 data->use_chanctx = param->use_chanctx;
2398 data->idx = idx;
2399 data->destroy_on_close = param->destroy_on_close;
2400 if (info)
2401 data->portid = info->snd_portid;
2402
2403 if (data->use_chanctx) {
2404 hw->wiphy->max_scan_ssids = 255;
2405 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2406 hw->wiphy->max_remain_on_channel_duration = 1000;
2407 /* For channels > 1 DFS is not allowed */
2408 hw->wiphy->n_iface_combinations = 1;
2409 hw->wiphy->iface_combinations = &data->if_combination;
2410 if (param->p2p_device)
2411 data->if_combination = hwsim_if_comb_p2p_dev[0];
2412 else
2413 data->if_combination = hwsim_if_comb[0];
2414 data->if_combination.num_different_channels = data->channels;
2415 } else if (param->p2p_device) {
2416 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2417 hw->wiphy->n_iface_combinations =
2418 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2419 } else {
2420 hw->wiphy->iface_combinations = hwsim_if_comb;
2421 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2422 }
2423
2424 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2425 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2426 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2427
2428 hw->queues = 5;
2429 hw->offchannel_tx_hw_queue = 4;
2430 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2431 BIT(NL80211_IFTYPE_AP) |
2432 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2433 BIT(NL80211_IFTYPE_P2P_GO) |
2434 BIT(NL80211_IFTYPE_ADHOC) |
2435 BIT(NL80211_IFTYPE_MESH_POINT);
2436
2437 if (param->p2p_device)
2438 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2439
2440 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2441 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2442 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2443 ieee80211_hw_set(hw, QUEUE_CONTROL);
2444 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2445 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2446 ieee80211_hw_set(hw, MFP_CAPABLE);
2447 ieee80211_hw_set(hw, SIGNAL_DBM);
2448 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2449 if (rctbl)
2450 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2451
2452 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2453 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2454 WIPHY_FLAG_AP_UAPSD |
2455 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2456 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2457 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2458 NL80211_FEATURE_STATIC_SMPS |
2459 NL80211_FEATURE_DYNAMIC_SMPS |
2460 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2461 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2462
2463 /* ask mac80211 to reserve space for magic */
2464 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2465 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2466 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2467
2468 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2469 sizeof(hwsim_channels_2ghz));
2470 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2471 sizeof(hwsim_channels_5ghz));
2472 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2473
2474 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2475 struct ieee80211_supported_band *sband = &data->bands[band];
2476 switch (band) {
2477 case IEEE80211_BAND_2GHZ:
2478 sband->channels = data->channels_2ghz;
2479 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2480 sband->bitrates = data->rates;
2481 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2482 break;
2483 case IEEE80211_BAND_5GHZ:
2484 sband->channels = data->channels_5ghz;
2485 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2486 sband->bitrates = data->rates + 4;
2487 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2488
2489 sband->vht_cap.vht_supported = true;
2490 sband->vht_cap.cap =
2491 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2492 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2493 IEEE80211_VHT_CAP_RXLDPC |
2494 IEEE80211_VHT_CAP_SHORT_GI_80 |
2495 IEEE80211_VHT_CAP_SHORT_GI_160 |
2496 IEEE80211_VHT_CAP_TXSTBC |
2497 IEEE80211_VHT_CAP_RXSTBC_1 |
2498 IEEE80211_VHT_CAP_RXSTBC_2 |
2499 IEEE80211_VHT_CAP_RXSTBC_3 |
2500 IEEE80211_VHT_CAP_RXSTBC_4 |
2501 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2502 sband->vht_cap.vht_mcs.rx_mcs_map =
2503 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2504 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2505 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2506 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2507 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2508 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2509 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2510 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2511 sband->vht_cap.vht_mcs.tx_mcs_map =
2512 sband->vht_cap.vht_mcs.rx_mcs_map;
2513 break;
2514 default:
2515 continue;
2516 }
2517
2518 sband->ht_cap.ht_supported = true;
2519 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2520 IEEE80211_HT_CAP_GRN_FLD |
2521 IEEE80211_HT_CAP_SGI_20 |
2522 IEEE80211_HT_CAP_SGI_40 |
2523 IEEE80211_HT_CAP_DSSSCCK40;
2524 sband->ht_cap.ampdu_factor = 0x3;
2525 sband->ht_cap.ampdu_density = 0x6;
2526 memset(&sband->ht_cap.mcs, 0,
2527 sizeof(sband->ht_cap.mcs));
2528 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2529 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2530 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2531
2532 hw->wiphy->bands[band] = sband;
2533 }
2534
2535 /* By default all radios belong to the first group */
2536 data->group = 1;
2537 mutex_init(&data->mutex);
2538
2539 /* Enable frame retransmissions for lossy channels */
2540 hw->max_rates = 4;
2541 hw->max_rate_tries = 11;
2542
2543 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2544 hw->wiphy->n_vendor_commands =
2545 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2546 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2547 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2548
2549 if (param->reg_strict)
2550 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2551 if (param->regd) {
2552 data->regd = param->regd;
2553 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2554 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2555 /* give the regulatory workqueue a chance to run */
2556 schedule_timeout_interruptible(1);
2557 }
2558
2559 if (param->no_vif)
2560 ieee80211_hw_set(hw, NO_AUTO_VIF);
2561
2562 err = ieee80211_register_hw(hw);
2563 if (err < 0) {
2564 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2565 err);
2566 goto failed_hw;
2567 }
2568
2569 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2570
2571 if (param->reg_alpha2) {
2572 data->alpha2[0] = param->reg_alpha2[0];
2573 data->alpha2[1] = param->reg_alpha2[1];
2574 regulatory_hint(hw->wiphy, param->reg_alpha2);
2575 }
2576
2577 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2578 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2579 debugfs_create_file("group", 0666, data->debugfs, data,
2580 &hwsim_fops_group);
2581 if (!data->use_chanctx)
2582 debugfs_create_file("dfs_simulate_radar", 0222,
2583 data->debugfs,
2584 data, &hwsim_simulate_radar);
2585
2586 tasklet_hrtimer_init(&data->beacon_timer,
2587 mac80211_hwsim_beacon,
2588 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2589
2590 spin_lock_bh(&hwsim_radio_lock);
2591 list_add_tail(&data->list, &hwsim_radios);
2592 spin_unlock_bh(&hwsim_radio_lock);
2593
2594 if (idx > 0)
2595 hwsim_mcast_new_radio(idx, info, param);
2596
2597 return idx;
2598
2599 failed_hw:
2600 device_release_driver(data->dev);
2601 failed_bind:
2602 device_unregister(data->dev);
2603 failed_drvdata:
2604 ieee80211_free_hw(hw);
2605 failed:
2606 return err;
2607 }
2608
2609 static void hwsim_mcast_del_radio(int id, const char *hwname,
2610 struct genl_info *info)
2611 {
2612 struct sk_buff *skb;
2613 void *data;
2614 int ret;
2615
2616 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2617 if (!skb)
2618 return;
2619
2620 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2621 HWSIM_CMD_DEL_RADIO);
2622 if (!data)
2623 goto error;
2624
2625 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2626 if (ret < 0)
2627 goto error;
2628
2629 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2630 hwname);
2631 if (ret < 0)
2632 goto error;
2633
2634 genlmsg_end(skb, data);
2635
2636 hwsim_mcast_config_msg(skb, info);
2637
2638 return;
2639
2640 error:
2641 nlmsg_free(skb);
2642 }
2643
2644 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2645 const char *hwname,
2646 struct genl_info *info)
2647 {
2648 hwsim_mcast_del_radio(data->idx, hwname, info);
2649 debugfs_remove_recursive(data->debugfs);
2650 ieee80211_unregister_hw(data->hw);
2651 device_release_driver(data->dev);
2652 device_unregister(data->dev);
2653 ieee80211_free_hw(data->hw);
2654 }
2655
2656 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2657 struct mac80211_hwsim_data *data,
2658 u32 portid, u32 seq,
2659 struct netlink_callback *cb, int flags)
2660 {
2661 void *hdr;
2662 struct hwsim_new_radio_params param = { };
2663 int res = -EMSGSIZE;
2664
2665 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2666 HWSIM_CMD_GET_RADIO);
2667 if (!hdr)
2668 return -EMSGSIZE;
2669
2670 if (cb)
2671 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2672
2673 if (data->alpha2[0] && data->alpha2[1])
2674 param.reg_alpha2 = data->alpha2;
2675
2676 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2677 REGULATORY_STRICT_REG);
2678 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2679 BIT(NL80211_IFTYPE_P2P_DEVICE));
2680 param.use_chanctx = data->use_chanctx;
2681 param.regd = data->regd;
2682 param.channels = data->channels;
2683 param.hwname = wiphy_name(data->hw->wiphy);
2684
2685 res = append_radio_msg(skb, data->idx, &param);
2686 if (res < 0)
2687 goto out_err;
2688
2689 genlmsg_end(skb, hdr);
2690 return 0;
2691
2692 out_err:
2693 genlmsg_cancel(skb, hdr);
2694 return res;
2695 }
2696
2697 static void mac80211_hwsim_free(void)
2698 {
2699 struct mac80211_hwsim_data *data;
2700
2701 spin_lock_bh(&hwsim_radio_lock);
2702 while ((data = list_first_entry_or_null(&hwsim_radios,
2703 struct mac80211_hwsim_data,
2704 list))) {
2705 list_del(&data->list);
2706 spin_unlock_bh(&hwsim_radio_lock);
2707 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2708 NULL);
2709 spin_lock_bh(&hwsim_radio_lock);
2710 }
2711 spin_unlock_bh(&hwsim_radio_lock);
2712 class_destroy(hwsim_class);
2713 }
2714
2715 static const struct net_device_ops hwsim_netdev_ops = {
2716 .ndo_start_xmit = hwsim_mon_xmit,
2717 .ndo_change_mtu = eth_change_mtu,
2718 .ndo_set_mac_address = eth_mac_addr,
2719 .ndo_validate_addr = eth_validate_addr,
2720 };
2721
2722 static void hwsim_mon_setup(struct net_device *dev)
2723 {
2724 dev->netdev_ops = &hwsim_netdev_ops;
2725 dev->destructor = free_netdev;
2726 ether_setup(dev);
2727 dev->priv_flags |= IFF_NO_QUEUE;
2728 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2729 eth_zero_addr(dev->dev_addr);
2730 dev->dev_addr[0] = 0x12;
2731 }
2732
2733 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2734 {
2735 struct mac80211_hwsim_data *data;
2736 bool _found = false;
2737
2738 spin_lock_bh(&hwsim_radio_lock);
2739 list_for_each_entry(data, &hwsim_radios, list) {
2740 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2741 _found = true;
2742 break;
2743 }
2744 }
2745 spin_unlock_bh(&hwsim_radio_lock);
2746
2747 if (!_found)
2748 return NULL;
2749
2750 return data;
2751 }
2752
2753 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2754 struct genl_info *info)
2755 {
2756
2757 struct ieee80211_hdr *hdr;
2758 struct mac80211_hwsim_data *data2;
2759 struct ieee80211_tx_info *txi;
2760 struct hwsim_tx_rate *tx_attempts;
2761 u64 ret_skb_cookie;
2762 struct sk_buff *skb, *tmp;
2763 const u8 *src;
2764 unsigned int hwsim_flags;
2765 int i;
2766 bool found = false;
2767
2768 if (info->snd_portid != wmediumd_portid)
2769 return -EINVAL;
2770
2771 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2772 !info->attrs[HWSIM_ATTR_FLAGS] ||
2773 !info->attrs[HWSIM_ATTR_COOKIE] ||
2774 !info->attrs[HWSIM_ATTR_TX_INFO])
2775 goto out;
2776
2777 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2778 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2779 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2780
2781 data2 = get_hwsim_data_ref_from_addr(src);
2782 if (!data2)
2783 goto out;
2784
2785 /* look for the skb matching the cookie passed back from user */
2786 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2787 u64 skb_cookie;
2788
2789 txi = IEEE80211_SKB_CB(skb);
2790 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2791
2792 if (skb_cookie == ret_skb_cookie) {
2793 skb_unlink(skb, &data2->pending);
2794 found = true;
2795 break;
2796 }
2797 }
2798
2799 /* not found */
2800 if (!found)
2801 goto out;
2802
2803 /* Tx info received because the frame was broadcasted on user space,
2804 so we get all the necessary info: tx attempts and skb control buff */
2805
2806 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2807 info->attrs[HWSIM_ATTR_TX_INFO]);
2808
2809 /* now send back TX status */
2810 txi = IEEE80211_SKB_CB(skb);
2811
2812 ieee80211_tx_info_clear_status(txi);
2813
2814 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2815 txi->status.rates[i].idx = tx_attempts[i].idx;
2816 txi->status.rates[i].count = tx_attempts[i].count;
2817 /*txi->status.rates[i].flags = 0;*/
2818 }
2819
2820 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2821
2822 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2823 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2824 if (skb->len >= 16) {
2825 hdr = (struct ieee80211_hdr *) skb->data;
2826 mac80211_hwsim_monitor_ack(data2->channel,
2827 hdr->addr2);
2828 }
2829 txi->flags |= IEEE80211_TX_STAT_ACK;
2830 }
2831 ieee80211_tx_status_irqsafe(data2->hw, skb);
2832 return 0;
2833 out:
2834 return -EINVAL;
2835
2836 }
2837
2838 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2839 struct genl_info *info)
2840 {
2841 struct mac80211_hwsim_data *data2;
2842 struct ieee80211_rx_status rx_status;
2843 const u8 *dst;
2844 int frame_data_len;
2845 void *frame_data;
2846 struct sk_buff *skb = NULL;
2847
2848 if (info->snd_portid != wmediumd_portid)
2849 return -EINVAL;
2850
2851 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2852 !info->attrs[HWSIM_ATTR_FRAME] ||
2853 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2854 !info->attrs[HWSIM_ATTR_SIGNAL])
2855 goto out;
2856
2857 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2858 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2859 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2860
2861 /* Allocate new skb here */
2862 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2863 if (skb == NULL)
2864 goto err;
2865
2866 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2867 goto err;
2868
2869 /* Copy the data */
2870 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2871
2872 data2 = get_hwsim_data_ref_from_addr(dst);
2873 if (!data2)
2874 goto out;
2875
2876 /* check if radio is configured properly */
2877
2878 if (data2->idle || !data2->started)
2879 goto out;
2880
2881 /* A frame is received from user space */
2882 memset(&rx_status, 0, sizeof(rx_status));
2883 if (info->attrs[HWSIM_ATTR_FREQ]) {
2884 /* throw away off-channel packets, but allow both the temporary
2885 * ("hw" scan/remain-on-channel) and regular channel, since the
2886 * internal datapath also allows this
2887 */
2888 mutex_lock(&data2->mutex);
2889 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2890
2891 if (rx_status.freq != data2->channel->center_freq &&
2892 (!data2->tmp_chan ||
2893 rx_status.freq != data2->tmp_chan->center_freq)) {
2894 mutex_unlock(&data2->mutex);
2895 goto out;
2896 }
2897 mutex_unlock(&data2->mutex);
2898 } else {
2899 rx_status.freq = data2->channel->center_freq;
2900 }
2901
2902 rx_status.band = data2->channel->band;
2903 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2904 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2905
2906 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2907 data2->rx_pkts++;
2908 data2->rx_bytes += skb->len;
2909 ieee80211_rx_irqsafe(data2->hw, skb);
2910
2911 return 0;
2912 err:
2913 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2914 out:
2915 dev_kfree_skb(skb);
2916 return -EINVAL;
2917 }
2918
2919 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2920 struct genl_info *info)
2921 {
2922 struct mac80211_hwsim_data *data;
2923 int chans = 1;
2924
2925 spin_lock_bh(&hwsim_radio_lock);
2926 list_for_each_entry(data, &hwsim_radios, list)
2927 chans = max(chans, data->channels);
2928 spin_unlock_bh(&hwsim_radio_lock);
2929
2930 /* In the future we should revise the userspace API and allow it
2931 * to set a flag that it does support multi-channel, then we can
2932 * let this pass conditionally on the flag.
2933 * For current userspace, prohibit it since it won't work right.
2934 */
2935 if (chans > 1)
2936 return -EOPNOTSUPP;
2937
2938 if (wmediumd_portid)
2939 return -EBUSY;
2940
2941 wmediumd_portid = info->snd_portid;
2942
2943 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2944 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2945
2946 return 0;
2947 }
2948
2949 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2950 {
2951 struct hwsim_new_radio_params param = { 0 };
2952
2953 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2954 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2955 param.channels = channels;
2956 param.destroy_on_close =
2957 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2958
2959 if (info->attrs[HWSIM_ATTR_CHANNELS])
2960 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2961
2962 if (info->attrs[HWSIM_ATTR_NO_VIF])
2963 param.no_vif = true;
2964
2965 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2966 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2967
2968 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2969 param.use_chanctx = true;
2970 else
2971 param.use_chanctx = (param.channels > 1);
2972
2973 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2974 param.reg_alpha2 =
2975 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2976
2977 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2978 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2979
2980 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2981 return -EINVAL;
2982 param.regd = hwsim_world_regdom_custom[idx];
2983 }
2984
2985 return mac80211_hwsim_new_radio(info, &param);
2986 }
2987
2988 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2989 {
2990 struct mac80211_hwsim_data *data;
2991 s64 idx = -1;
2992 const char *hwname = NULL;
2993
2994 if (info->attrs[HWSIM_ATTR_RADIO_ID])
2995 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2996 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2997 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2998 else
2999 return -EINVAL;
3000
3001 spin_lock_bh(&hwsim_radio_lock);
3002 list_for_each_entry(data, &hwsim_radios, list) {
3003 if (idx >= 0) {
3004 if (data->idx != idx)
3005 continue;
3006 } else {
3007 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3008 continue;
3009 }
3010
3011 list_del(&data->list);
3012 spin_unlock_bh(&hwsim_radio_lock);
3013 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3014 info);
3015 return 0;
3016 }
3017 spin_unlock_bh(&hwsim_radio_lock);
3018
3019 return -ENODEV;
3020 }
3021
3022 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3023 {
3024 struct mac80211_hwsim_data *data;
3025 struct sk_buff *skb;
3026 int idx, res = -ENODEV;
3027
3028 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3029 return -EINVAL;
3030 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3031
3032 spin_lock_bh(&hwsim_radio_lock);
3033 list_for_each_entry(data, &hwsim_radios, list) {
3034 if (data->idx != idx)
3035 continue;
3036
3037 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3038 if (!skb) {
3039 res = -ENOMEM;
3040 goto out_err;
3041 }
3042
3043 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3044 info->snd_seq, NULL, 0);
3045 if (res < 0) {
3046 nlmsg_free(skb);
3047 goto out_err;
3048 }
3049
3050 genlmsg_reply(skb, info);
3051 break;
3052 }
3053
3054 out_err:
3055 spin_unlock_bh(&hwsim_radio_lock);
3056
3057 return res;
3058 }
3059
3060 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3061 struct netlink_callback *cb)
3062 {
3063 int idx = cb->args[0];
3064 struct mac80211_hwsim_data *data = NULL;
3065 int res;
3066
3067 spin_lock_bh(&hwsim_radio_lock);
3068
3069 if (idx == hwsim_radio_idx)
3070 goto done;
3071
3072 list_for_each_entry(data, &hwsim_radios, list) {
3073 if (data->idx < idx)
3074 continue;
3075
3076 res = mac80211_hwsim_get_radio(skb, data,
3077 NETLINK_CB(cb->skb).portid,
3078 cb->nlh->nlmsg_seq, cb,
3079 NLM_F_MULTI);
3080 if (res < 0)
3081 break;
3082
3083 idx = data->idx + 1;
3084 }
3085
3086 cb->args[0] = idx;
3087
3088 done:
3089 spin_unlock_bh(&hwsim_radio_lock);
3090 return skb->len;
3091 }
3092
3093 /* Generic Netlink operations array */
3094 static const struct genl_ops hwsim_ops[] = {
3095 {
3096 .cmd = HWSIM_CMD_REGISTER,
3097 .policy = hwsim_genl_policy,
3098 .doit = hwsim_register_received_nl,
3099 .flags = GENL_ADMIN_PERM,
3100 },
3101 {
3102 .cmd = HWSIM_CMD_FRAME,
3103 .policy = hwsim_genl_policy,
3104 .doit = hwsim_cloned_frame_received_nl,
3105 },
3106 {
3107 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3108 .policy = hwsim_genl_policy,
3109 .doit = hwsim_tx_info_frame_received_nl,
3110 },
3111 {
3112 .cmd = HWSIM_CMD_NEW_RADIO,
3113 .policy = hwsim_genl_policy,
3114 .doit = hwsim_new_radio_nl,
3115 .flags = GENL_ADMIN_PERM,
3116 },
3117 {
3118 .cmd = HWSIM_CMD_DEL_RADIO,
3119 .policy = hwsim_genl_policy,
3120 .doit = hwsim_del_radio_nl,
3121 .flags = GENL_ADMIN_PERM,
3122 },
3123 {
3124 .cmd = HWSIM_CMD_GET_RADIO,
3125 .policy = hwsim_genl_policy,
3126 .doit = hwsim_get_radio_nl,
3127 .dumpit = hwsim_dump_radio_nl,
3128 },
3129 };
3130
3131 static void destroy_radio(struct work_struct *work)
3132 {
3133 struct mac80211_hwsim_data *data =
3134 container_of(work, struct mac80211_hwsim_data, destroy_work);
3135
3136 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3137 }
3138
3139 static void remove_user_radios(u32 portid)
3140 {
3141 struct mac80211_hwsim_data *entry, *tmp;
3142
3143 spin_lock_bh(&hwsim_radio_lock);
3144 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3145 if (entry->destroy_on_close && entry->portid == portid) {
3146 list_del(&entry->list);
3147 INIT_WORK(&entry->destroy_work, destroy_radio);
3148 schedule_work(&entry->destroy_work);
3149 }
3150 }
3151 spin_unlock_bh(&hwsim_radio_lock);
3152 }
3153
3154 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3155 unsigned long state,
3156 void *_notify)
3157 {
3158 struct netlink_notify *notify = _notify;
3159
3160 if (state != NETLINK_URELEASE)
3161 return NOTIFY_DONE;
3162
3163 remove_user_radios(notify->portid);
3164
3165 if (notify->portid == wmediumd_portid) {
3166 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3167 " socket, switching to perfect channel medium\n");
3168 wmediumd_portid = 0;
3169 }
3170 return NOTIFY_DONE;
3171
3172 }
3173
3174 static struct notifier_block hwsim_netlink_notifier = {
3175 .notifier_call = mac80211_hwsim_netlink_notify,
3176 };
3177
3178 static int hwsim_init_netlink(void)
3179 {
3180 int rc;
3181
3182 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3183
3184 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3185 hwsim_ops,
3186 hwsim_mcgrps);
3187 if (rc)
3188 goto failure;
3189
3190 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3191 if (rc) {
3192 genl_unregister_family(&hwsim_genl_family);
3193 goto failure;
3194 }
3195
3196 return 0;
3197
3198 failure:
3199 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3200 return -EINVAL;
3201 }
3202
3203 static void hwsim_exit_netlink(void)
3204 {
3205 /* unregister the notifier */
3206 netlink_unregister_notifier(&hwsim_netlink_notifier);
3207 /* unregister the family */
3208 genl_unregister_family(&hwsim_genl_family);
3209 }
3210
3211 static int __init init_mac80211_hwsim(void)
3212 {
3213 int i, err;
3214
3215 if (radios < 0 || radios > 100)
3216 return -EINVAL;
3217
3218 if (channels < 1)
3219 return -EINVAL;
3220
3221 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3222 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3223 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3224 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3225 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3226 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3227 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3228 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3229 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3230 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3231 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3232 mac80211_hwsim_assign_vif_chanctx;
3233 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3234 mac80211_hwsim_unassign_vif_chanctx;
3235
3236 spin_lock_init(&hwsim_radio_lock);
3237 INIT_LIST_HEAD(&hwsim_radios);
3238
3239 err = platform_driver_register(&mac80211_hwsim_driver);
3240 if (err)
3241 return err;
3242
3243 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3244 if (IS_ERR(hwsim_class)) {
3245 err = PTR_ERR(hwsim_class);
3246 goto out_unregister_driver;
3247 }
3248
3249 err = hwsim_init_netlink();
3250 if (err < 0)
3251 goto out_unregister_driver;
3252
3253 for (i = 0; i < radios; i++) {
3254 struct hwsim_new_radio_params param = { 0 };
3255
3256 param.channels = channels;
3257
3258 switch (regtest) {
3259 case HWSIM_REGTEST_DIFF_COUNTRY:
3260 if (i < ARRAY_SIZE(hwsim_alpha2s))
3261 param.reg_alpha2 = hwsim_alpha2s[i];
3262 break;
3263 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3264 if (!i)
3265 param.reg_alpha2 = hwsim_alpha2s[0];
3266 break;
3267 case HWSIM_REGTEST_STRICT_ALL:
3268 param.reg_strict = true;
3269 case HWSIM_REGTEST_DRIVER_REG_ALL:
3270 param.reg_alpha2 = hwsim_alpha2s[0];
3271 break;
3272 case HWSIM_REGTEST_WORLD_ROAM:
3273 if (i == 0)
3274 param.regd = &hwsim_world_regdom_custom_01;
3275 break;
3276 case HWSIM_REGTEST_CUSTOM_WORLD:
3277 param.regd = &hwsim_world_regdom_custom_01;
3278 break;
3279 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3280 if (i == 0)
3281 param.regd = &hwsim_world_regdom_custom_01;
3282 else if (i == 1)
3283 param.regd = &hwsim_world_regdom_custom_02;
3284 break;
3285 case HWSIM_REGTEST_STRICT_FOLLOW:
3286 if (i == 0) {
3287 param.reg_strict = true;
3288 param.reg_alpha2 = hwsim_alpha2s[0];
3289 }
3290 break;
3291 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3292 if (i == 0) {
3293 param.reg_strict = true;
3294 param.reg_alpha2 = hwsim_alpha2s[0];
3295 } else if (i == 1) {
3296 param.reg_alpha2 = hwsim_alpha2s[1];
3297 }
3298 break;
3299 case HWSIM_REGTEST_ALL:
3300 switch (i) {
3301 case 0:
3302 param.regd = &hwsim_world_regdom_custom_01;
3303 break;
3304 case 1:
3305 param.regd = &hwsim_world_regdom_custom_02;
3306 break;
3307 case 2:
3308 param.reg_alpha2 = hwsim_alpha2s[0];
3309 break;
3310 case 3:
3311 param.reg_alpha2 = hwsim_alpha2s[1];
3312 break;
3313 case 4:
3314 param.reg_strict = true;
3315 param.reg_alpha2 = hwsim_alpha2s[2];
3316 break;
3317 }
3318 break;
3319 default:
3320 break;
3321 }
3322
3323 param.p2p_device = support_p2p_device;
3324 param.use_chanctx = channels > 1;
3325
3326 err = mac80211_hwsim_new_radio(NULL, &param);
3327 if (err < 0)
3328 goto out_free_radios;
3329 }
3330
3331 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3332 hwsim_mon_setup);
3333 if (hwsim_mon == NULL) {
3334 err = -ENOMEM;
3335 goto out_free_radios;
3336 }
3337
3338 rtnl_lock();
3339 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3340 if (err < 0) {
3341 rtnl_unlock();
3342 goto out_free_radios;
3343 }
3344
3345 err = register_netdevice(hwsim_mon);
3346 if (err < 0) {
3347 rtnl_unlock();
3348 goto out_free_mon;
3349 }
3350 rtnl_unlock();
3351
3352 return 0;
3353
3354 out_free_mon:
3355 free_netdev(hwsim_mon);
3356 out_free_radios:
3357 mac80211_hwsim_free();
3358 out_unregister_driver:
3359 platform_driver_unregister(&mac80211_hwsim_driver);
3360 return err;
3361 }
3362 module_init(init_mac80211_hwsim);
3363
3364 static void __exit exit_mac80211_hwsim(void)
3365 {
3366 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3367
3368 hwsim_exit_netlink();
3369
3370 mac80211_hwsim_free();
3371 unregister_netdev(hwsim_mon);
3372 platform_driver_unregister(&mac80211_hwsim_driver);
3373 }
3374 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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