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Merge branch 'for-linus-4.7' 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 = NL80211_BAND_2GHZ, \
259 .center_freq = (_freq), \
260 .hw_value = (_freq), \
261 .max_power = 20, \
262 }
263
264 #define CHAN5G(_freq) { \
265 .band = NL80211_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[NUM_NL80211_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_reset_mac_header(skb);
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_reset_mac_header(skb);
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_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
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 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1339
1340 ieee80211_tx_info_clear_status(txi);
1341
1342 /* frame was transmitted at most favorable rate at first attempt */
1343 txi->control.rates[0].count = 1;
1344 txi->control.rates[1].idx = -1;
1345
1346 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1347 txi->flags |= IEEE80211_TX_STAT_ACK;
1348 ieee80211_tx_status_irqsafe(hw, skb);
1349 }
1350
1351
1352 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1353 {
1354 struct mac80211_hwsim_data *data = hw->priv;
1355 wiphy_debug(hw->wiphy, "%s\n", __func__);
1356 data->started = true;
1357 return 0;
1358 }
1359
1360
1361 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1362 {
1363 struct mac80211_hwsim_data *data = hw->priv;
1364 data->started = false;
1365 tasklet_hrtimer_cancel(&data->beacon_timer);
1366 wiphy_debug(hw->wiphy, "%s\n", __func__);
1367 }
1368
1369
1370 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1371 struct ieee80211_vif *vif)
1372 {
1373 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1374 __func__, ieee80211_vif_type_p2p(vif),
1375 vif->addr);
1376 hwsim_set_magic(vif);
1377
1378 vif->cab_queue = 0;
1379 vif->hw_queue[IEEE80211_AC_VO] = 0;
1380 vif->hw_queue[IEEE80211_AC_VI] = 1;
1381 vif->hw_queue[IEEE80211_AC_BE] = 2;
1382 vif->hw_queue[IEEE80211_AC_BK] = 3;
1383
1384 return 0;
1385 }
1386
1387
1388 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1389 struct ieee80211_vif *vif,
1390 enum nl80211_iftype newtype,
1391 bool newp2p)
1392 {
1393 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1394 wiphy_debug(hw->wiphy,
1395 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1396 __func__, ieee80211_vif_type_p2p(vif),
1397 newtype, vif->addr);
1398 hwsim_check_magic(vif);
1399
1400 /*
1401 * interface may change from non-AP to AP in
1402 * which case this needs to be set up again
1403 */
1404 vif->cab_queue = 0;
1405
1406 return 0;
1407 }
1408
1409 static void mac80211_hwsim_remove_interface(
1410 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1411 {
1412 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1413 __func__, ieee80211_vif_type_p2p(vif),
1414 vif->addr);
1415 hwsim_check_magic(vif);
1416 hwsim_clear_magic(vif);
1417 }
1418
1419 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1420 struct sk_buff *skb,
1421 struct ieee80211_channel *chan)
1422 {
1423 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1424
1425 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1426 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1427 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1428 txi->control.rates,
1429 ARRAY_SIZE(txi->control.rates));
1430 }
1431
1432 mac80211_hwsim_monitor_rx(hw, skb, chan);
1433
1434 if (_pid)
1435 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1436
1437 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1438 dev_kfree_skb(skb);
1439 }
1440
1441 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1442 struct ieee80211_vif *vif)
1443 {
1444 struct mac80211_hwsim_data *data = arg;
1445 struct ieee80211_hw *hw = data->hw;
1446 struct ieee80211_tx_info *info;
1447 struct ieee80211_rate *txrate;
1448 struct ieee80211_mgmt *mgmt;
1449 struct sk_buff *skb;
1450
1451 hwsim_check_magic(vif);
1452
1453 if (vif->type != NL80211_IFTYPE_AP &&
1454 vif->type != NL80211_IFTYPE_MESH_POINT &&
1455 vif->type != NL80211_IFTYPE_ADHOC)
1456 return;
1457
1458 skb = ieee80211_beacon_get(hw, vif);
1459 if (skb == NULL)
1460 return;
1461 info = IEEE80211_SKB_CB(skb);
1462 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1463 ieee80211_get_tx_rates(vif, NULL, skb,
1464 info->control.rates,
1465 ARRAY_SIZE(info->control.rates));
1466
1467 txrate = ieee80211_get_tx_rate(hw, info);
1468
1469 mgmt = (struct ieee80211_mgmt *) skb->data;
1470 /* fake header transmission time */
1471 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1472 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1473 data->tsf_offset +
1474 24 * 8 * 10 / txrate->bitrate);
1475
1476 mac80211_hwsim_tx_frame(hw, skb,
1477 rcu_dereference(vif->chanctx_conf)->def.chan);
1478
1479 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1480 ieee80211_csa_finish(vif);
1481 }
1482
1483 static enum hrtimer_restart
1484 mac80211_hwsim_beacon(struct hrtimer *timer)
1485 {
1486 struct mac80211_hwsim_data *data =
1487 container_of(timer, struct mac80211_hwsim_data,
1488 beacon_timer.timer);
1489 struct ieee80211_hw *hw = data->hw;
1490 u64 bcn_int = data->beacon_int;
1491 ktime_t next_bcn;
1492
1493 if (!data->started)
1494 goto out;
1495
1496 ieee80211_iterate_active_interfaces_atomic(
1497 hw, IEEE80211_IFACE_ITER_NORMAL,
1498 mac80211_hwsim_beacon_tx, data);
1499
1500 /* beacon at new TBTT + beacon interval */
1501 if (data->bcn_delta) {
1502 bcn_int -= data->bcn_delta;
1503 data->bcn_delta = 0;
1504 }
1505
1506 next_bcn = ktime_add(hrtimer_get_expires(timer),
1507 ns_to_ktime(bcn_int * 1000));
1508 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1509 out:
1510 return HRTIMER_NORESTART;
1511 }
1512
1513 static const char * const hwsim_chanwidths[] = {
1514 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1515 [NL80211_CHAN_WIDTH_20] = "ht20",
1516 [NL80211_CHAN_WIDTH_40] = "ht40",
1517 [NL80211_CHAN_WIDTH_80] = "vht80",
1518 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1519 [NL80211_CHAN_WIDTH_160] = "vht160",
1520 };
1521
1522 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1523 {
1524 struct mac80211_hwsim_data *data = hw->priv;
1525 struct ieee80211_conf *conf = &hw->conf;
1526 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1527 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1528 [IEEE80211_SMPS_OFF] = "off",
1529 [IEEE80211_SMPS_STATIC] = "static",
1530 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1531 };
1532
1533 if (conf->chandef.chan)
1534 wiphy_debug(hw->wiphy,
1535 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1536 __func__,
1537 conf->chandef.chan->center_freq,
1538 conf->chandef.center_freq1,
1539 conf->chandef.center_freq2,
1540 hwsim_chanwidths[conf->chandef.width],
1541 !!(conf->flags & IEEE80211_CONF_IDLE),
1542 !!(conf->flags & IEEE80211_CONF_PS),
1543 smps_modes[conf->smps_mode]);
1544 else
1545 wiphy_debug(hw->wiphy,
1546 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1547 __func__,
1548 !!(conf->flags & IEEE80211_CONF_IDLE),
1549 !!(conf->flags & IEEE80211_CONF_PS),
1550 smps_modes[conf->smps_mode]);
1551
1552 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1553
1554 data->channel = conf->chandef.chan;
1555
1556 WARN_ON(data->channel && data->use_chanctx);
1557
1558 data->power_level = conf->power_level;
1559 if (!data->started || !data->beacon_int)
1560 tasklet_hrtimer_cancel(&data->beacon_timer);
1561 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1562 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1563 u32 bcn_int = data->beacon_int;
1564 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1565
1566 tasklet_hrtimer_start(&data->beacon_timer,
1567 ns_to_ktime(until_tbtt * 1000),
1568 HRTIMER_MODE_REL);
1569 }
1570
1571 return 0;
1572 }
1573
1574
1575 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1576 unsigned int changed_flags,
1577 unsigned int *total_flags,u64 multicast)
1578 {
1579 struct mac80211_hwsim_data *data = hw->priv;
1580
1581 wiphy_debug(hw->wiphy, "%s\n", __func__);
1582
1583 data->rx_filter = 0;
1584 if (*total_flags & FIF_ALLMULTI)
1585 data->rx_filter |= FIF_ALLMULTI;
1586
1587 *total_flags = data->rx_filter;
1588 }
1589
1590 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1591 struct ieee80211_vif *vif)
1592 {
1593 unsigned int *count = data;
1594 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1595
1596 if (vp->bcn_en)
1597 (*count)++;
1598 }
1599
1600 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1601 struct ieee80211_vif *vif,
1602 struct ieee80211_bss_conf *info,
1603 u32 changed)
1604 {
1605 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1606 struct mac80211_hwsim_data *data = hw->priv;
1607
1608 hwsim_check_magic(vif);
1609
1610 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1611 __func__, changed, vif->addr);
1612
1613 if (changed & BSS_CHANGED_BSSID) {
1614 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1615 __func__, info->bssid);
1616 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1617 }
1618
1619 if (changed & BSS_CHANGED_ASSOC) {
1620 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1621 info->assoc, info->aid);
1622 vp->assoc = info->assoc;
1623 vp->aid = info->aid;
1624 }
1625
1626 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1627 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1628 info->enable_beacon, info->beacon_int);
1629 vp->bcn_en = info->enable_beacon;
1630 if (data->started &&
1631 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1632 info->enable_beacon) {
1633 u64 tsf, until_tbtt;
1634 u32 bcn_int;
1635 data->beacon_int = info->beacon_int * 1024;
1636 tsf = mac80211_hwsim_get_tsf(hw, vif);
1637 bcn_int = data->beacon_int;
1638 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1639 tasklet_hrtimer_start(&data->beacon_timer,
1640 ns_to_ktime(until_tbtt * 1000),
1641 HRTIMER_MODE_REL);
1642 } else if (!info->enable_beacon) {
1643 unsigned int count = 0;
1644 ieee80211_iterate_active_interfaces_atomic(
1645 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1646 mac80211_hwsim_bcn_en_iter, &count);
1647 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1648 count);
1649 if (count == 0) {
1650 tasklet_hrtimer_cancel(&data->beacon_timer);
1651 data->beacon_int = 0;
1652 }
1653 }
1654 }
1655
1656 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1657 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1658 info->use_cts_prot);
1659 }
1660
1661 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1662 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1663 info->use_short_preamble);
1664 }
1665
1666 if (changed & BSS_CHANGED_ERP_SLOT) {
1667 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1668 }
1669
1670 if (changed & BSS_CHANGED_HT) {
1671 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1672 info->ht_operation_mode);
1673 }
1674
1675 if (changed & BSS_CHANGED_BASIC_RATES) {
1676 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1677 (unsigned long long) info->basic_rates);
1678 }
1679
1680 if (changed & BSS_CHANGED_TXPOWER)
1681 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1682 }
1683
1684 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1685 struct ieee80211_vif *vif,
1686 struct ieee80211_sta *sta)
1687 {
1688 hwsim_check_magic(vif);
1689 hwsim_set_sta_magic(sta);
1690
1691 return 0;
1692 }
1693
1694 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1695 struct ieee80211_vif *vif,
1696 struct ieee80211_sta *sta)
1697 {
1698 hwsim_check_magic(vif);
1699 hwsim_clear_sta_magic(sta);
1700
1701 return 0;
1702 }
1703
1704 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1705 struct ieee80211_vif *vif,
1706 enum sta_notify_cmd cmd,
1707 struct ieee80211_sta *sta)
1708 {
1709 hwsim_check_magic(vif);
1710
1711 switch (cmd) {
1712 case STA_NOTIFY_SLEEP:
1713 case STA_NOTIFY_AWAKE:
1714 /* TODO: make good use of these flags */
1715 break;
1716 default:
1717 WARN(1, "Invalid sta notify: %d\n", cmd);
1718 break;
1719 }
1720 }
1721
1722 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1723 struct ieee80211_sta *sta,
1724 bool set)
1725 {
1726 hwsim_check_sta_magic(sta);
1727 return 0;
1728 }
1729
1730 static int mac80211_hwsim_conf_tx(
1731 struct ieee80211_hw *hw,
1732 struct ieee80211_vif *vif, u16 queue,
1733 const struct ieee80211_tx_queue_params *params)
1734 {
1735 wiphy_debug(hw->wiphy,
1736 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1737 __func__, queue,
1738 params->txop, params->cw_min,
1739 params->cw_max, params->aifs);
1740 return 0;
1741 }
1742
1743 static int mac80211_hwsim_get_survey(
1744 struct ieee80211_hw *hw, int idx,
1745 struct survey_info *survey)
1746 {
1747 struct ieee80211_conf *conf = &hw->conf;
1748
1749 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1750
1751 if (idx != 0)
1752 return -ENOENT;
1753
1754 /* Current channel */
1755 survey->channel = conf->chandef.chan;
1756
1757 /*
1758 * Magically conjured noise level --- this is only ok for simulated hardware.
1759 *
1760 * A real driver which cannot determine the real channel noise MUST NOT
1761 * report any noise, especially not a magically conjured one :-)
1762 */
1763 survey->filled = SURVEY_INFO_NOISE_DBM;
1764 survey->noise = -92;
1765
1766 return 0;
1767 }
1768
1769 #ifdef CONFIG_NL80211_TESTMODE
1770 /*
1771 * This section contains example code for using netlink
1772 * attributes with the testmode command in nl80211.
1773 */
1774
1775 /* These enums need to be kept in sync with userspace */
1776 enum hwsim_testmode_attr {
1777 __HWSIM_TM_ATTR_INVALID = 0,
1778 HWSIM_TM_ATTR_CMD = 1,
1779 HWSIM_TM_ATTR_PS = 2,
1780
1781 /* keep last */
1782 __HWSIM_TM_ATTR_AFTER_LAST,
1783 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1784 };
1785
1786 enum hwsim_testmode_cmd {
1787 HWSIM_TM_CMD_SET_PS = 0,
1788 HWSIM_TM_CMD_GET_PS = 1,
1789 HWSIM_TM_CMD_STOP_QUEUES = 2,
1790 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1791 };
1792
1793 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1794 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1795 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1796 };
1797
1798 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1799 struct ieee80211_vif *vif,
1800 void *data, int len)
1801 {
1802 struct mac80211_hwsim_data *hwsim = hw->priv;
1803 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1804 struct sk_buff *skb;
1805 int err, ps;
1806
1807 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1808 hwsim_testmode_policy);
1809 if (err)
1810 return err;
1811
1812 if (!tb[HWSIM_TM_ATTR_CMD])
1813 return -EINVAL;
1814
1815 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1816 case HWSIM_TM_CMD_SET_PS:
1817 if (!tb[HWSIM_TM_ATTR_PS])
1818 return -EINVAL;
1819 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1820 return hwsim_fops_ps_write(hwsim, ps);
1821 case HWSIM_TM_CMD_GET_PS:
1822 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1823 nla_total_size(sizeof(u32)));
1824 if (!skb)
1825 return -ENOMEM;
1826 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1827 goto nla_put_failure;
1828 return cfg80211_testmode_reply(skb);
1829 case HWSIM_TM_CMD_STOP_QUEUES:
1830 ieee80211_stop_queues(hw);
1831 return 0;
1832 case HWSIM_TM_CMD_WAKE_QUEUES:
1833 ieee80211_wake_queues(hw);
1834 return 0;
1835 default:
1836 return -EOPNOTSUPP;
1837 }
1838
1839 nla_put_failure:
1840 kfree_skb(skb);
1841 return -ENOBUFS;
1842 }
1843 #endif
1844
1845 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1846 struct ieee80211_vif *vif,
1847 struct ieee80211_ampdu_params *params)
1848 {
1849 struct ieee80211_sta *sta = params->sta;
1850 enum ieee80211_ampdu_mlme_action action = params->action;
1851 u16 tid = params->tid;
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 struct ieee80211_mgmt *mgmt;
1913
1914 probe = ieee80211_probereq_get(hwsim->hw,
1915 hwsim->scan_addr,
1916 req->ssids[i].ssid,
1917 req->ssids[i].ssid_len,
1918 req->ie_len);
1919 if (!probe)
1920 continue;
1921
1922 mgmt = (struct ieee80211_mgmt *) probe->data;
1923 memcpy(mgmt->da, req->bssid, ETH_ALEN);
1924 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
1925
1926 if (req->ie_len)
1927 memcpy(skb_put(probe, req->ie_len), req->ie,
1928 req->ie_len);
1929
1930 local_bh_disable();
1931 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1932 hwsim->tmp_chan);
1933 local_bh_enable();
1934 }
1935 }
1936 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1937 msecs_to_jiffies(dwell));
1938 hwsim->scan_chan_idx++;
1939 mutex_unlock(&hwsim->mutex);
1940 }
1941
1942 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1943 struct ieee80211_vif *vif,
1944 struct ieee80211_scan_request *hw_req)
1945 {
1946 struct mac80211_hwsim_data *hwsim = hw->priv;
1947 struct cfg80211_scan_request *req = &hw_req->req;
1948
1949 mutex_lock(&hwsim->mutex);
1950 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1951 mutex_unlock(&hwsim->mutex);
1952 return -EBUSY;
1953 }
1954 hwsim->hw_scan_request = req;
1955 hwsim->hw_scan_vif = vif;
1956 hwsim->scan_chan_idx = 0;
1957 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1958 get_random_mask_addr(hwsim->scan_addr,
1959 hw_req->req.mac_addr,
1960 hw_req->req.mac_addr_mask);
1961 else
1962 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1963 mutex_unlock(&hwsim->mutex);
1964
1965 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1966
1967 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1968
1969 return 0;
1970 }
1971
1972 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1973 struct ieee80211_vif *vif)
1974 {
1975 struct mac80211_hwsim_data *hwsim = hw->priv;
1976
1977 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1978
1979 cancel_delayed_work_sync(&hwsim->hw_scan);
1980
1981 mutex_lock(&hwsim->mutex);
1982 ieee80211_scan_completed(hwsim->hw, true);
1983 hwsim->tmp_chan = NULL;
1984 hwsim->hw_scan_request = NULL;
1985 hwsim->hw_scan_vif = NULL;
1986 mutex_unlock(&hwsim->mutex);
1987 }
1988
1989 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1990 struct ieee80211_vif *vif,
1991 const u8 *mac_addr)
1992 {
1993 struct mac80211_hwsim_data *hwsim = hw->priv;
1994
1995 mutex_lock(&hwsim->mutex);
1996
1997 if (hwsim->scanning) {
1998 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1999 goto out;
2000 }
2001
2002 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2003
2004 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2005 hwsim->scanning = true;
2006
2007 out:
2008 mutex_unlock(&hwsim->mutex);
2009 }
2010
2011 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2012 struct ieee80211_vif *vif)
2013 {
2014 struct mac80211_hwsim_data *hwsim = hw->priv;
2015
2016 mutex_lock(&hwsim->mutex);
2017
2018 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2019 hwsim->scanning = false;
2020 eth_zero_addr(hwsim->scan_addr);
2021
2022 mutex_unlock(&hwsim->mutex);
2023 }
2024
2025 static void hw_roc_start(struct work_struct *work)
2026 {
2027 struct mac80211_hwsim_data *hwsim =
2028 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2029
2030 mutex_lock(&hwsim->mutex);
2031
2032 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2033 hwsim->tmp_chan = hwsim->roc_chan;
2034 ieee80211_ready_on_channel(hwsim->hw);
2035
2036 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2037 msecs_to_jiffies(hwsim->roc_duration));
2038
2039 mutex_unlock(&hwsim->mutex);
2040 }
2041
2042 static void hw_roc_done(struct work_struct *work)
2043 {
2044 struct mac80211_hwsim_data *hwsim =
2045 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2046
2047 mutex_lock(&hwsim->mutex);
2048 ieee80211_remain_on_channel_expired(hwsim->hw);
2049 hwsim->tmp_chan = NULL;
2050 mutex_unlock(&hwsim->mutex);
2051
2052 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2053 }
2054
2055 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2056 struct ieee80211_vif *vif,
2057 struct ieee80211_channel *chan,
2058 int duration,
2059 enum ieee80211_roc_type type)
2060 {
2061 struct mac80211_hwsim_data *hwsim = hw->priv;
2062
2063 mutex_lock(&hwsim->mutex);
2064 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2065 mutex_unlock(&hwsim->mutex);
2066 return -EBUSY;
2067 }
2068
2069 hwsim->roc_chan = chan;
2070 hwsim->roc_duration = duration;
2071 mutex_unlock(&hwsim->mutex);
2072
2073 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2074 chan->center_freq, duration);
2075 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2076
2077 return 0;
2078 }
2079
2080 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2081 {
2082 struct mac80211_hwsim_data *hwsim = hw->priv;
2083
2084 cancel_delayed_work_sync(&hwsim->roc_start);
2085 cancel_delayed_work_sync(&hwsim->roc_done);
2086
2087 mutex_lock(&hwsim->mutex);
2088 hwsim->tmp_chan = NULL;
2089 mutex_unlock(&hwsim->mutex);
2090
2091 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2092
2093 return 0;
2094 }
2095
2096 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2097 struct ieee80211_chanctx_conf *ctx)
2098 {
2099 hwsim_set_chanctx_magic(ctx);
2100 wiphy_debug(hw->wiphy,
2101 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2102 ctx->def.chan->center_freq, ctx->def.width,
2103 ctx->def.center_freq1, ctx->def.center_freq2);
2104 return 0;
2105 }
2106
2107 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2108 struct ieee80211_chanctx_conf *ctx)
2109 {
2110 wiphy_debug(hw->wiphy,
2111 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2112 ctx->def.chan->center_freq, ctx->def.width,
2113 ctx->def.center_freq1, ctx->def.center_freq2);
2114 hwsim_check_chanctx_magic(ctx);
2115 hwsim_clear_chanctx_magic(ctx);
2116 }
2117
2118 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2119 struct ieee80211_chanctx_conf *ctx,
2120 u32 changed)
2121 {
2122 hwsim_check_chanctx_magic(ctx);
2123 wiphy_debug(hw->wiphy,
2124 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2125 ctx->def.chan->center_freq, ctx->def.width,
2126 ctx->def.center_freq1, ctx->def.center_freq2);
2127 }
2128
2129 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2130 struct ieee80211_vif *vif,
2131 struct ieee80211_chanctx_conf *ctx)
2132 {
2133 hwsim_check_magic(vif);
2134 hwsim_check_chanctx_magic(ctx);
2135
2136 return 0;
2137 }
2138
2139 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2140 struct ieee80211_vif *vif,
2141 struct ieee80211_chanctx_conf *ctx)
2142 {
2143 hwsim_check_magic(vif);
2144 hwsim_check_chanctx_magic(ctx);
2145 }
2146
2147 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2148 "tx_pkts_nic",
2149 "tx_bytes_nic",
2150 "rx_pkts_nic",
2151 "rx_bytes_nic",
2152 "d_tx_dropped",
2153 "d_tx_failed",
2154 "d_ps_mode",
2155 "d_group",
2156 "d_tx_power",
2157 };
2158
2159 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2160
2161 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2162 struct ieee80211_vif *vif,
2163 u32 sset, u8 *data)
2164 {
2165 if (sset == ETH_SS_STATS)
2166 memcpy(data, *mac80211_hwsim_gstrings_stats,
2167 sizeof(mac80211_hwsim_gstrings_stats));
2168 }
2169
2170 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2171 struct ieee80211_vif *vif, int sset)
2172 {
2173 if (sset == ETH_SS_STATS)
2174 return MAC80211_HWSIM_SSTATS_LEN;
2175 return 0;
2176 }
2177
2178 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2179 struct ieee80211_vif *vif,
2180 struct ethtool_stats *stats, u64 *data)
2181 {
2182 struct mac80211_hwsim_data *ar = hw->priv;
2183 int i = 0;
2184
2185 data[i++] = ar->tx_pkts;
2186 data[i++] = ar->tx_bytes;
2187 data[i++] = ar->rx_pkts;
2188 data[i++] = ar->rx_bytes;
2189 data[i++] = ar->tx_dropped;
2190 data[i++] = ar->tx_failed;
2191 data[i++] = ar->ps;
2192 data[i++] = ar->group;
2193 data[i++] = ar->power_level;
2194
2195 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2196 }
2197
2198 static const struct ieee80211_ops mac80211_hwsim_ops = {
2199 .tx = mac80211_hwsim_tx,
2200 .start = mac80211_hwsim_start,
2201 .stop = mac80211_hwsim_stop,
2202 .add_interface = mac80211_hwsim_add_interface,
2203 .change_interface = mac80211_hwsim_change_interface,
2204 .remove_interface = mac80211_hwsim_remove_interface,
2205 .config = mac80211_hwsim_config,
2206 .configure_filter = mac80211_hwsim_configure_filter,
2207 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2208 .sta_add = mac80211_hwsim_sta_add,
2209 .sta_remove = mac80211_hwsim_sta_remove,
2210 .sta_notify = mac80211_hwsim_sta_notify,
2211 .set_tim = mac80211_hwsim_set_tim,
2212 .conf_tx = mac80211_hwsim_conf_tx,
2213 .get_survey = mac80211_hwsim_get_survey,
2214 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2215 .ampdu_action = mac80211_hwsim_ampdu_action,
2216 .sw_scan_start = mac80211_hwsim_sw_scan,
2217 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2218 .flush = mac80211_hwsim_flush,
2219 .get_tsf = mac80211_hwsim_get_tsf,
2220 .set_tsf = mac80211_hwsim_set_tsf,
2221 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2222 .get_et_stats = mac80211_hwsim_get_et_stats,
2223 .get_et_strings = mac80211_hwsim_get_et_strings,
2224 };
2225
2226 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2227
2228 struct hwsim_new_radio_params {
2229 unsigned int channels;
2230 const char *reg_alpha2;
2231 const struct ieee80211_regdomain *regd;
2232 bool reg_strict;
2233 bool p2p_device;
2234 bool use_chanctx;
2235 bool destroy_on_close;
2236 const char *hwname;
2237 bool no_vif;
2238 };
2239
2240 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2241 struct genl_info *info)
2242 {
2243 if (info)
2244 genl_notify(&hwsim_genl_family, mcast_skb, info,
2245 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2246 else
2247 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2248 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2249 }
2250
2251 static int append_radio_msg(struct sk_buff *skb, int id,
2252 struct hwsim_new_radio_params *param)
2253 {
2254 int ret;
2255
2256 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2257 if (ret < 0)
2258 return ret;
2259
2260 if (param->channels) {
2261 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2262 if (ret < 0)
2263 return ret;
2264 }
2265
2266 if (param->reg_alpha2) {
2267 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2268 param->reg_alpha2);
2269 if (ret < 0)
2270 return ret;
2271 }
2272
2273 if (param->regd) {
2274 int i;
2275
2276 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2277 if (hwsim_world_regdom_custom[i] != param->regd)
2278 continue;
2279
2280 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2281 if (ret < 0)
2282 return ret;
2283 break;
2284 }
2285 }
2286
2287 if (param->reg_strict) {
2288 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2289 if (ret < 0)
2290 return ret;
2291 }
2292
2293 if (param->p2p_device) {
2294 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2295 if (ret < 0)
2296 return ret;
2297 }
2298
2299 if (param->use_chanctx) {
2300 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2301 if (ret < 0)
2302 return ret;
2303 }
2304
2305 if (param->hwname) {
2306 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2307 strlen(param->hwname), param->hwname);
2308 if (ret < 0)
2309 return ret;
2310 }
2311
2312 return 0;
2313 }
2314
2315 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2316 struct hwsim_new_radio_params *param)
2317 {
2318 struct sk_buff *mcast_skb;
2319 void *data;
2320
2321 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2322 if (!mcast_skb)
2323 return;
2324
2325 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2326 HWSIM_CMD_NEW_RADIO);
2327 if (!data)
2328 goto out_err;
2329
2330 if (append_radio_msg(mcast_skb, id, param) < 0)
2331 goto out_err;
2332
2333 genlmsg_end(mcast_skb, data);
2334
2335 hwsim_mcast_config_msg(mcast_skb, info);
2336 return;
2337
2338 out_err:
2339 genlmsg_cancel(mcast_skb, data);
2340 nlmsg_free(mcast_skb);
2341 }
2342
2343 static int mac80211_hwsim_new_radio(struct genl_info *info,
2344 struct hwsim_new_radio_params *param)
2345 {
2346 int err;
2347 u8 addr[ETH_ALEN];
2348 struct mac80211_hwsim_data *data;
2349 struct ieee80211_hw *hw;
2350 enum nl80211_band band;
2351 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2352 int idx;
2353
2354 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2355 return -EINVAL;
2356
2357 spin_lock_bh(&hwsim_radio_lock);
2358 idx = hwsim_radio_idx++;
2359 spin_unlock_bh(&hwsim_radio_lock);
2360
2361 if (param->use_chanctx)
2362 ops = &mac80211_hwsim_mchan_ops;
2363 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2364 if (!hw) {
2365 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2366 err = -ENOMEM;
2367 goto failed;
2368 }
2369 data = hw->priv;
2370 data->hw = hw;
2371
2372 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2373 if (IS_ERR(data->dev)) {
2374 printk(KERN_DEBUG
2375 "mac80211_hwsim: device_create failed (%ld)\n",
2376 PTR_ERR(data->dev));
2377 err = -ENOMEM;
2378 goto failed_drvdata;
2379 }
2380 data->dev->driver = &mac80211_hwsim_driver.driver;
2381 err = device_bind_driver(data->dev);
2382 if (err != 0) {
2383 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2384 err);
2385 goto failed_bind;
2386 }
2387
2388 skb_queue_head_init(&data->pending);
2389
2390 SET_IEEE80211_DEV(hw, data->dev);
2391 eth_zero_addr(addr);
2392 addr[0] = 0x02;
2393 addr[3] = idx >> 8;
2394 addr[4] = idx;
2395 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2396 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2397 data->addresses[1].addr[0] |= 0x40;
2398 hw->wiphy->n_addresses = 2;
2399 hw->wiphy->addresses = data->addresses;
2400
2401 data->channels = param->channels;
2402 data->use_chanctx = param->use_chanctx;
2403 data->idx = idx;
2404 data->destroy_on_close = param->destroy_on_close;
2405 if (info)
2406 data->portid = info->snd_portid;
2407
2408 if (data->use_chanctx) {
2409 hw->wiphy->max_scan_ssids = 255;
2410 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2411 hw->wiphy->max_remain_on_channel_duration = 1000;
2412 /* For channels > 1 DFS is not allowed */
2413 hw->wiphy->n_iface_combinations = 1;
2414 hw->wiphy->iface_combinations = &data->if_combination;
2415 if (param->p2p_device)
2416 data->if_combination = hwsim_if_comb_p2p_dev[0];
2417 else
2418 data->if_combination = hwsim_if_comb[0];
2419 data->if_combination.num_different_channels = data->channels;
2420 } else if (param->p2p_device) {
2421 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2422 hw->wiphy->n_iface_combinations =
2423 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2424 } else {
2425 hw->wiphy->iface_combinations = hwsim_if_comb;
2426 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2427 }
2428
2429 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2430 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2431 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2432
2433 hw->queues = 5;
2434 hw->offchannel_tx_hw_queue = 4;
2435 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2436 BIT(NL80211_IFTYPE_AP) |
2437 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2438 BIT(NL80211_IFTYPE_P2P_GO) |
2439 BIT(NL80211_IFTYPE_ADHOC) |
2440 BIT(NL80211_IFTYPE_MESH_POINT);
2441
2442 if (param->p2p_device)
2443 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2444
2445 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2446 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2447 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2448 ieee80211_hw_set(hw, QUEUE_CONTROL);
2449 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2450 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2451 ieee80211_hw_set(hw, MFP_CAPABLE);
2452 ieee80211_hw_set(hw, SIGNAL_DBM);
2453 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2454 if (rctbl)
2455 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2456
2457 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2458 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2459 WIPHY_FLAG_AP_UAPSD |
2460 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2461 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2462 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2463 NL80211_FEATURE_STATIC_SMPS |
2464 NL80211_FEATURE_DYNAMIC_SMPS |
2465 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2466 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2467
2468 /* ask mac80211 to reserve space for magic */
2469 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2470 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2471 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2472
2473 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2474 sizeof(hwsim_channels_2ghz));
2475 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2476 sizeof(hwsim_channels_5ghz));
2477 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2478
2479 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2480 struct ieee80211_supported_band *sband = &data->bands[band];
2481 switch (band) {
2482 case NL80211_BAND_2GHZ:
2483 sband->channels = data->channels_2ghz;
2484 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2485 sband->bitrates = data->rates;
2486 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2487 break;
2488 case NL80211_BAND_5GHZ:
2489 sband->channels = data->channels_5ghz;
2490 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2491 sband->bitrates = data->rates + 4;
2492 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2493
2494 sband->vht_cap.vht_supported = true;
2495 sband->vht_cap.cap =
2496 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2497 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2498 IEEE80211_VHT_CAP_RXLDPC |
2499 IEEE80211_VHT_CAP_SHORT_GI_80 |
2500 IEEE80211_VHT_CAP_SHORT_GI_160 |
2501 IEEE80211_VHT_CAP_TXSTBC |
2502 IEEE80211_VHT_CAP_RXSTBC_1 |
2503 IEEE80211_VHT_CAP_RXSTBC_2 |
2504 IEEE80211_VHT_CAP_RXSTBC_3 |
2505 IEEE80211_VHT_CAP_RXSTBC_4 |
2506 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2507 sband->vht_cap.vht_mcs.rx_mcs_map =
2508 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2509 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2510 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2511 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2512 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2513 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2514 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2515 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2516 sband->vht_cap.vht_mcs.tx_mcs_map =
2517 sband->vht_cap.vht_mcs.rx_mcs_map;
2518 break;
2519 default:
2520 continue;
2521 }
2522
2523 sband->ht_cap.ht_supported = true;
2524 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2525 IEEE80211_HT_CAP_GRN_FLD |
2526 IEEE80211_HT_CAP_SGI_20 |
2527 IEEE80211_HT_CAP_SGI_40 |
2528 IEEE80211_HT_CAP_DSSSCCK40;
2529 sband->ht_cap.ampdu_factor = 0x3;
2530 sband->ht_cap.ampdu_density = 0x6;
2531 memset(&sband->ht_cap.mcs, 0,
2532 sizeof(sband->ht_cap.mcs));
2533 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2534 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2535 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2536
2537 hw->wiphy->bands[band] = sband;
2538 }
2539
2540 /* By default all radios belong to the first group */
2541 data->group = 1;
2542 mutex_init(&data->mutex);
2543
2544 /* Enable frame retransmissions for lossy channels */
2545 hw->max_rates = 4;
2546 hw->max_rate_tries = 11;
2547
2548 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2549 hw->wiphy->n_vendor_commands =
2550 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2551 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2552 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2553
2554 if (param->reg_strict)
2555 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2556 if (param->regd) {
2557 data->regd = param->regd;
2558 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2559 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2560 /* give the regulatory workqueue a chance to run */
2561 schedule_timeout_interruptible(1);
2562 }
2563
2564 if (param->no_vif)
2565 ieee80211_hw_set(hw, NO_AUTO_VIF);
2566
2567 err = ieee80211_register_hw(hw);
2568 if (err < 0) {
2569 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2570 err);
2571 goto failed_hw;
2572 }
2573
2574 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2575
2576 if (param->reg_alpha2) {
2577 data->alpha2[0] = param->reg_alpha2[0];
2578 data->alpha2[1] = param->reg_alpha2[1];
2579 regulatory_hint(hw->wiphy, param->reg_alpha2);
2580 }
2581
2582 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2583 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2584 debugfs_create_file("group", 0666, data->debugfs, data,
2585 &hwsim_fops_group);
2586 if (!data->use_chanctx)
2587 debugfs_create_file("dfs_simulate_radar", 0222,
2588 data->debugfs,
2589 data, &hwsim_simulate_radar);
2590
2591 tasklet_hrtimer_init(&data->beacon_timer,
2592 mac80211_hwsim_beacon,
2593 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2594
2595 spin_lock_bh(&hwsim_radio_lock);
2596 list_add_tail(&data->list, &hwsim_radios);
2597 spin_unlock_bh(&hwsim_radio_lock);
2598
2599 if (idx > 0)
2600 hwsim_mcast_new_radio(idx, info, param);
2601
2602 return idx;
2603
2604 failed_hw:
2605 device_release_driver(data->dev);
2606 failed_bind:
2607 device_unregister(data->dev);
2608 failed_drvdata:
2609 ieee80211_free_hw(hw);
2610 failed:
2611 return err;
2612 }
2613
2614 static void hwsim_mcast_del_radio(int id, const char *hwname,
2615 struct genl_info *info)
2616 {
2617 struct sk_buff *skb;
2618 void *data;
2619 int ret;
2620
2621 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2622 if (!skb)
2623 return;
2624
2625 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2626 HWSIM_CMD_DEL_RADIO);
2627 if (!data)
2628 goto error;
2629
2630 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2631 if (ret < 0)
2632 goto error;
2633
2634 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2635 hwname);
2636 if (ret < 0)
2637 goto error;
2638
2639 genlmsg_end(skb, data);
2640
2641 hwsim_mcast_config_msg(skb, info);
2642
2643 return;
2644
2645 error:
2646 nlmsg_free(skb);
2647 }
2648
2649 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2650 const char *hwname,
2651 struct genl_info *info)
2652 {
2653 hwsim_mcast_del_radio(data->idx, hwname, info);
2654 debugfs_remove_recursive(data->debugfs);
2655 ieee80211_unregister_hw(data->hw);
2656 device_release_driver(data->dev);
2657 device_unregister(data->dev);
2658 ieee80211_free_hw(data->hw);
2659 }
2660
2661 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2662 struct mac80211_hwsim_data *data,
2663 u32 portid, u32 seq,
2664 struct netlink_callback *cb, int flags)
2665 {
2666 void *hdr;
2667 struct hwsim_new_radio_params param = { };
2668 int res = -EMSGSIZE;
2669
2670 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2671 HWSIM_CMD_GET_RADIO);
2672 if (!hdr)
2673 return -EMSGSIZE;
2674
2675 if (cb)
2676 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2677
2678 if (data->alpha2[0] && data->alpha2[1])
2679 param.reg_alpha2 = data->alpha2;
2680
2681 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2682 REGULATORY_STRICT_REG);
2683 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2684 BIT(NL80211_IFTYPE_P2P_DEVICE));
2685 param.use_chanctx = data->use_chanctx;
2686 param.regd = data->regd;
2687 param.channels = data->channels;
2688 param.hwname = wiphy_name(data->hw->wiphy);
2689
2690 res = append_radio_msg(skb, data->idx, &param);
2691 if (res < 0)
2692 goto out_err;
2693
2694 genlmsg_end(skb, hdr);
2695 return 0;
2696
2697 out_err:
2698 genlmsg_cancel(skb, hdr);
2699 return res;
2700 }
2701
2702 static void mac80211_hwsim_free(void)
2703 {
2704 struct mac80211_hwsim_data *data;
2705
2706 spin_lock_bh(&hwsim_radio_lock);
2707 while ((data = list_first_entry_or_null(&hwsim_radios,
2708 struct mac80211_hwsim_data,
2709 list))) {
2710 list_del(&data->list);
2711 spin_unlock_bh(&hwsim_radio_lock);
2712 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2713 NULL);
2714 spin_lock_bh(&hwsim_radio_lock);
2715 }
2716 spin_unlock_bh(&hwsim_radio_lock);
2717 class_destroy(hwsim_class);
2718 }
2719
2720 static const struct net_device_ops hwsim_netdev_ops = {
2721 .ndo_start_xmit = hwsim_mon_xmit,
2722 .ndo_change_mtu = eth_change_mtu,
2723 .ndo_set_mac_address = eth_mac_addr,
2724 .ndo_validate_addr = eth_validate_addr,
2725 };
2726
2727 static void hwsim_mon_setup(struct net_device *dev)
2728 {
2729 dev->netdev_ops = &hwsim_netdev_ops;
2730 dev->destructor = free_netdev;
2731 ether_setup(dev);
2732 dev->priv_flags |= IFF_NO_QUEUE;
2733 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2734 eth_zero_addr(dev->dev_addr);
2735 dev->dev_addr[0] = 0x12;
2736 }
2737
2738 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2739 {
2740 struct mac80211_hwsim_data *data;
2741 bool _found = false;
2742
2743 spin_lock_bh(&hwsim_radio_lock);
2744 list_for_each_entry(data, &hwsim_radios, list) {
2745 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2746 _found = true;
2747 break;
2748 }
2749 }
2750 spin_unlock_bh(&hwsim_radio_lock);
2751
2752 if (!_found)
2753 return NULL;
2754
2755 return data;
2756 }
2757
2758 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2759 struct genl_info *info)
2760 {
2761
2762 struct ieee80211_hdr *hdr;
2763 struct mac80211_hwsim_data *data2;
2764 struct ieee80211_tx_info *txi;
2765 struct hwsim_tx_rate *tx_attempts;
2766 u64 ret_skb_cookie;
2767 struct sk_buff *skb, *tmp;
2768 const u8 *src;
2769 unsigned int hwsim_flags;
2770 int i;
2771 bool found = false;
2772
2773 if (info->snd_portid != wmediumd_portid)
2774 return -EINVAL;
2775
2776 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2777 !info->attrs[HWSIM_ATTR_FLAGS] ||
2778 !info->attrs[HWSIM_ATTR_COOKIE] ||
2779 !info->attrs[HWSIM_ATTR_SIGNAL] ||
2780 !info->attrs[HWSIM_ATTR_TX_INFO])
2781 goto out;
2782
2783 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2784 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2785 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2786
2787 data2 = get_hwsim_data_ref_from_addr(src);
2788 if (!data2)
2789 goto out;
2790
2791 /* look for the skb matching the cookie passed back from user */
2792 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2793 u64 skb_cookie;
2794
2795 txi = IEEE80211_SKB_CB(skb);
2796 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2797
2798 if (skb_cookie == ret_skb_cookie) {
2799 skb_unlink(skb, &data2->pending);
2800 found = true;
2801 break;
2802 }
2803 }
2804
2805 /* not found */
2806 if (!found)
2807 goto out;
2808
2809 /* Tx info received because the frame was broadcasted on user space,
2810 so we get all the necessary info: tx attempts and skb control buff */
2811
2812 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2813 info->attrs[HWSIM_ATTR_TX_INFO]);
2814
2815 /* now send back TX status */
2816 txi = IEEE80211_SKB_CB(skb);
2817
2818 ieee80211_tx_info_clear_status(txi);
2819
2820 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2821 txi->status.rates[i].idx = tx_attempts[i].idx;
2822 txi->status.rates[i].count = tx_attempts[i].count;
2823 /*txi->status.rates[i].flags = 0;*/
2824 }
2825
2826 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2827
2828 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2829 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2830 if (skb->len >= 16) {
2831 hdr = (struct ieee80211_hdr *) skb->data;
2832 mac80211_hwsim_monitor_ack(data2->channel,
2833 hdr->addr2);
2834 }
2835 txi->flags |= IEEE80211_TX_STAT_ACK;
2836 }
2837 ieee80211_tx_status_irqsafe(data2->hw, skb);
2838 return 0;
2839 out:
2840 return -EINVAL;
2841
2842 }
2843
2844 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2845 struct genl_info *info)
2846 {
2847 struct mac80211_hwsim_data *data2;
2848 struct ieee80211_rx_status rx_status;
2849 const u8 *dst;
2850 int frame_data_len;
2851 void *frame_data;
2852 struct sk_buff *skb = NULL;
2853
2854 if (info->snd_portid != wmediumd_portid)
2855 return -EINVAL;
2856
2857 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2858 !info->attrs[HWSIM_ATTR_FRAME] ||
2859 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2860 !info->attrs[HWSIM_ATTR_SIGNAL])
2861 goto out;
2862
2863 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2864 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2865 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2866
2867 /* Allocate new skb here */
2868 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2869 if (skb == NULL)
2870 goto err;
2871
2872 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2873 goto err;
2874
2875 /* Copy the data */
2876 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2877
2878 data2 = get_hwsim_data_ref_from_addr(dst);
2879 if (!data2)
2880 goto out;
2881
2882 /* check if radio is configured properly */
2883
2884 if (data2->idle || !data2->started)
2885 goto out;
2886
2887 /* A frame is received from user space */
2888 memset(&rx_status, 0, sizeof(rx_status));
2889 if (info->attrs[HWSIM_ATTR_FREQ]) {
2890 /* throw away off-channel packets, but allow both the temporary
2891 * ("hw" scan/remain-on-channel) and regular channel, since the
2892 * internal datapath also allows this
2893 */
2894 mutex_lock(&data2->mutex);
2895 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2896
2897 if (rx_status.freq != data2->channel->center_freq &&
2898 (!data2->tmp_chan ||
2899 rx_status.freq != data2->tmp_chan->center_freq)) {
2900 mutex_unlock(&data2->mutex);
2901 goto out;
2902 }
2903 mutex_unlock(&data2->mutex);
2904 } else {
2905 rx_status.freq = data2->channel->center_freq;
2906 }
2907
2908 rx_status.band = data2->channel->band;
2909 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2910 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2911
2912 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2913 data2->rx_pkts++;
2914 data2->rx_bytes += skb->len;
2915 ieee80211_rx_irqsafe(data2->hw, skb);
2916
2917 return 0;
2918 err:
2919 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2920 out:
2921 dev_kfree_skb(skb);
2922 return -EINVAL;
2923 }
2924
2925 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2926 struct genl_info *info)
2927 {
2928 struct mac80211_hwsim_data *data;
2929 int chans = 1;
2930
2931 spin_lock_bh(&hwsim_radio_lock);
2932 list_for_each_entry(data, &hwsim_radios, list)
2933 chans = max(chans, data->channels);
2934 spin_unlock_bh(&hwsim_radio_lock);
2935
2936 /* In the future we should revise the userspace API and allow it
2937 * to set a flag that it does support multi-channel, then we can
2938 * let this pass conditionally on the flag.
2939 * For current userspace, prohibit it since it won't work right.
2940 */
2941 if (chans > 1)
2942 return -EOPNOTSUPP;
2943
2944 if (wmediumd_portid)
2945 return -EBUSY;
2946
2947 wmediumd_portid = info->snd_portid;
2948
2949 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2950 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2951
2952 return 0;
2953 }
2954
2955 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2956 {
2957 struct hwsim_new_radio_params param = { 0 };
2958
2959 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2960 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2961 param.channels = channels;
2962 param.destroy_on_close =
2963 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2964
2965 if (info->attrs[HWSIM_ATTR_CHANNELS])
2966 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2967
2968 if (info->attrs[HWSIM_ATTR_NO_VIF])
2969 param.no_vif = true;
2970
2971 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2972 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2973
2974 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2975 param.use_chanctx = true;
2976 else
2977 param.use_chanctx = (param.channels > 1);
2978
2979 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2980 param.reg_alpha2 =
2981 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2982
2983 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2984 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2985
2986 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2987 return -EINVAL;
2988 param.regd = hwsim_world_regdom_custom[idx];
2989 }
2990
2991 return mac80211_hwsim_new_radio(info, &param);
2992 }
2993
2994 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2995 {
2996 struct mac80211_hwsim_data *data;
2997 s64 idx = -1;
2998 const char *hwname = NULL;
2999
3000 if (info->attrs[HWSIM_ATTR_RADIO_ID])
3001 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3002 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3003 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3004 else
3005 return -EINVAL;
3006
3007 spin_lock_bh(&hwsim_radio_lock);
3008 list_for_each_entry(data, &hwsim_radios, list) {
3009 if (idx >= 0) {
3010 if (data->idx != idx)
3011 continue;
3012 } else {
3013 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3014 continue;
3015 }
3016
3017 list_del(&data->list);
3018 spin_unlock_bh(&hwsim_radio_lock);
3019 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3020 info);
3021 return 0;
3022 }
3023 spin_unlock_bh(&hwsim_radio_lock);
3024
3025 return -ENODEV;
3026 }
3027
3028 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3029 {
3030 struct mac80211_hwsim_data *data;
3031 struct sk_buff *skb;
3032 int idx, res = -ENODEV;
3033
3034 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3035 return -EINVAL;
3036 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3037
3038 spin_lock_bh(&hwsim_radio_lock);
3039 list_for_each_entry(data, &hwsim_radios, list) {
3040 if (data->idx != idx)
3041 continue;
3042
3043 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3044 if (!skb) {
3045 res = -ENOMEM;
3046 goto out_err;
3047 }
3048
3049 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3050 info->snd_seq, NULL, 0);
3051 if (res < 0) {
3052 nlmsg_free(skb);
3053 goto out_err;
3054 }
3055
3056 genlmsg_reply(skb, info);
3057 break;
3058 }
3059
3060 out_err:
3061 spin_unlock_bh(&hwsim_radio_lock);
3062
3063 return res;
3064 }
3065
3066 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3067 struct netlink_callback *cb)
3068 {
3069 int idx = cb->args[0];
3070 struct mac80211_hwsim_data *data = NULL;
3071 int res;
3072
3073 spin_lock_bh(&hwsim_radio_lock);
3074
3075 if (idx == hwsim_radio_idx)
3076 goto done;
3077
3078 list_for_each_entry(data, &hwsim_radios, list) {
3079 if (data->idx < idx)
3080 continue;
3081
3082 res = mac80211_hwsim_get_radio(skb, data,
3083 NETLINK_CB(cb->skb).portid,
3084 cb->nlh->nlmsg_seq, cb,
3085 NLM_F_MULTI);
3086 if (res < 0)
3087 break;
3088
3089 idx = data->idx + 1;
3090 }
3091
3092 cb->args[0] = idx;
3093
3094 done:
3095 spin_unlock_bh(&hwsim_radio_lock);
3096 return skb->len;
3097 }
3098
3099 /* Generic Netlink operations array */
3100 static const struct genl_ops hwsim_ops[] = {
3101 {
3102 .cmd = HWSIM_CMD_REGISTER,
3103 .policy = hwsim_genl_policy,
3104 .doit = hwsim_register_received_nl,
3105 .flags = GENL_ADMIN_PERM,
3106 },
3107 {
3108 .cmd = HWSIM_CMD_FRAME,
3109 .policy = hwsim_genl_policy,
3110 .doit = hwsim_cloned_frame_received_nl,
3111 },
3112 {
3113 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3114 .policy = hwsim_genl_policy,
3115 .doit = hwsim_tx_info_frame_received_nl,
3116 },
3117 {
3118 .cmd = HWSIM_CMD_NEW_RADIO,
3119 .policy = hwsim_genl_policy,
3120 .doit = hwsim_new_radio_nl,
3121 .flags = GENL_ADMIN_PERM,
3122 },
3123 {
3124 .cmd = HWSIM_CMD_DEL_RADIO,
3125 .policy = hwsim_genl_policy,
3126 .doit = hwsim_del_radio_nl,
3127 .flags = GENL_ADMIN_PERM,
3128 },
3129 {
3130 .cmd = HWSIM_CMD_GET_RADIO,
3131 .policy = hwsim_genl_policy,
3132 .doit = hwsim_get_radio_nl,
3133 .dumpit = hwsim_dump_radio_nl,
3134 },
3135 };
3136
3137 static void destroy_radio(struct work_struct *work)
3138 {
3139 struct mac80211_hwsim_data *data =
3140 container_of(work, struct mac80211_hwsim_data, destroy_work);
3141
3142 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3143 }
3144
3145 static void remove_user_radios(u32 portid)
3146 {
3147 struct mac80211_hwsim_data *entry, *tmp;
3148
3149 spin_lock_bh(&hwsim_radio_lock);
3150 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3151 if (entry->destroy_on_close && entry->portid == portid) {
3152 list_del(&entry->list);
3153 INIT_WORK(&entry->destroy_work, destroy_radio);
3154 schedule_work(&entry->destroy_work);
3155 }
3156 }
3157 spin_unlock_bh(&hwsim_radio_lock);
3158 }
3159
3160 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3161 unsigned long state,
3162 void *_notify)
3163 {
3164 struct netlink_notify *notify = _notify;
3165
3166 if (state != NETLINK_URELEASE)
3167 return NOTIFY_DONE;
3168
3169 remove_user_radios(notify->portid);
3170
3171 if (notify->portid == wmediumd_portid) {
3172 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3173 " socket, switching to perfect channel medium\n");
3174 wmediumd_portid = 0;
3175 }
3176 return NOTIFY_DONE;
3177
3178 }
3179
3180 static struct notifier_block hwsim_netlink_notifier = {
3181 .notifier_call = mac80211_hwsim_netlink_notify,
3182 };
3183
3184 static int hwsim_init_netlink(void)
3185 {
3186 int rc;
3187
3188 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3189
3190 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3191 hwsim_ops,
3192 hwsim_mcgrps);
3193 if (rc)
3194 goto failure;
3195
3196 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3197 if (rc) {
3198 genl_unregister_family(&hwsim_genl_family);
3199 goto failure;
3200 }
3201
3202 return 0;
3203
3204 failure:
3205 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3206 return -EINVAL;
3207 }
3208
3209 static void hwsim_exit_netlink(void)
3210 {
3211 /* unregister the notifier */
3212 netlink_unregister_notifier(&hwsim_netlink_notifier);
3213 /* unregister the family */
3214 genl_unregister_family(&hwsim_genl_family);
3215 }
3216
3217 static int __init init_mac80211_hwsim(void)
3218 {
3219 int i, err;
3220
3221 if (radios < 0 || radios > 100)
3222 return -EINVAL;
3223
3224 if (channels < 1)
3225 return -EINVAL;
3226
3227 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3228 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3229 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3230 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3231 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3232 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3233 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3234 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3235 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3236 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3237 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3238 mac80211_hwsim_assign_vif_chanctx;
3239 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3240 mac80211_hwsim_unassign_vif_chanctx;
3241
3242 spin_lock_init(&hwsim_radio_lock);
3243 INIT_LIST_HEAD(&hwsim_radios);
3244
3245 err = platform_driver_register(&mac80211_hwsim_driver);
3246 if (err)
3247 return err;
3248
3249 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3250 if (IS_ERR(hwsim_class)) {
3251 err = PTR_ERR(hwsim_class);
3252 goto out_unregister_driver;
3253 }
3254
3255 err = hwsim_init_netlink();
3256 if (err < 0)
3257 goto out_unregister_driver;
3258
3259 for (i = 0; i < radios; i++) {
3260 struct hwsim_new_radio_params param = { 0 };
3261
3262 param.channels = channels;
3263
3264 switch (regtest) {
3265 case HWSIM_REGTEST_DIFF_COUNTRY:
3266 if (i < ARRAY_SIZE(hwsim_alpha2s))
3267 param.reg_alpha2 = hwsim_alpha2s[i];
3268 break;
3269 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3270 if (!i)
3271 param.reg_alpha2 = hwsim_alpha2s[0];
3272 break;
3273 case HWSIM_REGTEST_STRICT_ALL:
3274 param.reg_strict = true;
3275 case HWSIM_REGTEST_DRIVER_REG_ALL:
3276 param.reg_alpha2 = hwsim_alpha2s[0];
3277 break;
3278 case HWSIM_REGTEST_WORLD_ROAM:
3279 if (i == 0)
3280 param.regd = &hwsim_world_regdom_custom_01;
3281 break;
3282 case HWSIM_REGTEST_CUSTOM_WORLD:
3283 param.regd = &hwsim_world_regdom_custom_01;
3284 break;
3285 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3286 if (i == 0)
3287 param.regd = &hwsim_world_regdom_custom_01;
3288 else if (i == 1)
3289 param.regd = &hwsim_world_regdom_custom_02;
3290 break;
3291 case HWSIM_REGTEST_STRICT_FOLLOW:
3292 if (i == 0) {
3293 param.reg_strict = true;
3294 param.reg_alpha2 = hwsim_alpha2s[0];
3295 }
3296 break;
3297 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3298 if (i == 0) {
3299 param.reg_strict = true;
3300 param.reg_alpha2 = hwsim_alpha2s[0];
3301 } else if (i == 1) {
3302 param.reg_alpha2 = hwsim_alpha2s[1];
3303 }
3304 break;
3305 case HWSIM_REGTEST_ALL:
3306 switch (i) {
3307 case 0:
3308 param.regd = &hwsim_world_regdom_custom_01;
3309 break;
3310 case 1:
3311 param.regd = &hwsim_world_regdom_custom_02;
3312 break;
3313 case 2:
3314 param.reg_alpha2 = hwsim_alpha2s[0];
3315 break;
3316 case 3:
3317 param.reg_alpha2 = hwsim_alpha2s[1];
3318 break;
3319 case 4:
3320 param.reg_strict = true;
3321 param.reg_alpha2 = hwsim_alpha2s[2];
3322 break;
3323 }
3324 break;
3325 default:
3326 break;
3327 }
3328
3329 param.p2p_device = support_p2p_device;
3330 param.use_chanctx = channels > 1;
3331
3332 err = mac80211_hwsim_new_radio(NULL, &param);
3333 if (err < 0)
3334 goto out_free_radios;
3335 }
3336
3337 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3338 hwsim_mon_setup);
3339 if (hwsim_mon == NULL) {
3340 err = -ENOMEM;
3341 goto out_free_radios;
3342 }
3343
3344 rtnl_lock();
3345 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3346 if (err < 0) {
3347 rtnl_unlock();
3348 goto out_free_radios;
3349 }
3350
3351 err = register_netdevice(hwsim_mon);
3352 if (err < 0) {
3353 rtnl_unlock();
3354 goto out_free_mon;
3355 }
3356 rtnl_unlock();
3357
3358 return 0;
3359
3360 out_free_mon:
3361 free_netdev(hwsim_mon);
3362 out_free_radios:
3363 mac80211_hwsim_free();
3364 out_unregister_driver:
3365 platform_driver_unregister(&mac80211_hwsim_driver);
3366 return err;
3367 }
3368 module_init(init_mac80211_hwsim);
3369
3370 static void __exit exit_mac80211_hwsim(void)
3371 {
3372 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3373
3374 hwsim_exit_netlink();
3375
3376 mac80211_hwsim_free();
3377 unregister_netdev(hwsim_mon);
3378 platform_driver_unregister(&mac80211_hwsim_driver);
3379 }
3380 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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