tipc: correct spelling errors for tipc_topsrv_queue_evt() comments
[muen/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  * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11
12 /*
13  * TODO:
14  * - Add TSF sync and fix IBSS beacon transmission by adding
15  *   competition for "air time" at TBTT
16  * - RX filtering based on filter configuration (data->rx_filter)
17  */
18
19 #include <linux/list.h>
20 #include <linux/slab.h>
21 #include <linux/spinlock.h>
22 #include <net/dst.h>
23 #include <net/xfrm.h>
24 #include <net/mac80211.h>
25 #include <net/ieee80211_radiotap.h>
26 #include <linux/if_arp.h>
27 #include <linux/rtnetlink.h>
28 #include <linux/etherdevice.h>
29 #include <linux/platform_device.h>
30 #include <linux/debugfs.h>
31 #include <linux/module.h>
32 #include <linux/ktime.h>
33 #include <net/genetlink.h>
34 #include <net/net_namespace.h>
35 #include <net/netns/generic.h>
36 #include <linux/rhashtable.h>
37 #include "mac80211_hwsim.h"
38
39 #define WARN_QUEUE 100
40 #define MAX_QUEUE 200
41
42 MODULE_AUTHOR("Jouni Malinen");
43 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
44 MODULE_LICENSE("GPL");
45
46 static int radios = 2;
47 module_param(radios, int, 0444);
48 MODULE_PARM_DESC(radios, "Number of simulated radios");
49
50 static int channels = 1;
51 module_param(channels, int, 0444);
52 MODULE_PARM_DESC(channels, "Number of concurrent channels");
53
54 static bool paged_rx = false;
55 module_param(paged_rx, bool, 0644);
56 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
57
58 static bool rctbl = false;
59 module_param(rctbl, bool, 0444);
60 MODULE_PARM_DESC(rctbl, "Handle rate control table");
61
62 static bool support_p2p_device = true;
63 module_param(support_p2p_device, bool, 0444);
64 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
65
66 /**
67  * enum hwsim_regtest - the type of regulatory tests we offer
68  *
69  * These are the different values you can use for the regtest
70  * module parameter. This is useful to help test world roaming
71  * and the driver regulatory_hint() call and combinations of these.
72  * If you want to do specific alpha2 regulatory domain tests simply
73  * use the userspace regulatory request as that will be respected as
74  * well without the need of this module parameter. This is designed
75  * only for testing the driver regulatory request, world roaming
76  * and all possible combinations.
77  *
78  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
79  *      this is the default value.
80  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
81  *      hint, only one driver regulatory hint will be sent as such the
82  *      secondary radios are expected to follow.
83  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
84  *      request with all radios reporting the same regulatory domain.
85  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
86  *      different regulatory domains requests. Expected behaviour is for
87  *      an intersection to occur but each device will still use their
88  *      respective regulatory requested domains. Subsequent radios will
89  *      use the resulting intersection.
90  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
91  *      this by using a custom beacon-capable regulatory domain for the first
92  *      radio. All other device world roam.
93  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
94  *      domain requests. All radios will adhere to this custom world regulatory
95  *      domain.
96  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
97  *      domain requests. The first radio will adhere to the first custom world
98  *      regulatory domain, the second one to the second custom world regulatory
99  *      domain. All other devices will world roam.
100  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
101  *      settings, only the first radio will send a regulatory domain request
102  *      and use strict settings. The rest of the radios are expected to follow.
103  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
104  *      settings. All radios will adhere to this.
105  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
106  *      domain settings, combined with secondary driver regulatory domain
107  *      settings. The first radio will get a strict regulatory domain setting
108  *      using the first driver regulatory request and the second radio will use
109  *      non-strict settings using the second driver regulatory request. All
110  *      other devices should follow the intersection created between the
111  *      first two.
112  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
113  *      at least 6 radios for a complete test. We will test in this order:
114  *      1 - driver custom world regulatory domain
115  *      2 - second custom world regulatory domain
116  *      3 - first driver regulatory domain request
117  *      4 - second driver regulatory domain request
118  *      5 - strict regulatory domain settings using the third driver regulatory
119  *          domain request
120  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
121  *                 regulatory requests.
122  */
123 enum hwsim_regtest {
124         HWSIM_REGTEST_DISABLED = 0,
125         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
126         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
127         HWSIM_REGTEST_DIFF_COUNTRY = 3,
128         HWSIM_REGTEST_WORLD_ROAM = 4,
129         HWSIM_REGTEST_CUSTOM_WORLD = 5,
130         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
131         HWSIM_REGTEST_STRICT_FOLLOW = 7,
132         HWSIM_REGTEST_STRICT_ALL = 8,
133         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
134         HWSIM_REGTEST_ALL = 10,
135 };
136
137 /* Set to one of the HWSIM_REGTEST_* values above */
138 static int regtest = HWSIM_REGTEST_DISABLED;
139 module_param(regtest, int, 0444);
140 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
141
142 static const char *hwsim_alpha2s[] = {
143         "FI",
144         "AL",
145         "US",
146         "DE",
147         "JP",
148         "AL",
149 };
150
151 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
152         .n_reg_rules = 4,
153         .alpha2 =  "99",
154         .reg_rules = {
155                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
156                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
157                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
158                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
159         }
160 };
161
162 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
163         .n_reg_rules = 2,
164         .alpha2 =  "99",
165         .reg_rules = {
166                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
167                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
168                          NL80211_RRF_NO_IR),
169         }
170 };
171
172 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
173         &hwsim_world_regdom_custom_01,
174         &hwsim_world_regdom_custom_02,
175 };
176
177 struct hwsim_vif_priv {
178         u32 magic;
179         u8 bssid[ETH_ALEN];
180         bool assoc;
181         bool bcn_en;
182         u16 aid;
183 };
184
185 #define HWSIM_VIF_MAGIC 0x69537748
186
187 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
188 {
189         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
190         WARN(vp->magic != HWSIM_VIF_MAGIC,
191              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
192              vif, vp->magic, vif->addr, vif->type, vif->p2p);
193 }
194
195 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
196 {
197         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
198         vp->magic = HWSIM_VIF_MAGIC;
199 }
200
201 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
202 {
203         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
204         vp->magic = 0;
205 }
206
207 struct hwsim_sta_priv {
208         u32 magic;
209 };
210
211 #define HWSIM_STA_MAGIC 0x6d537749
212
213 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
214 {
215         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
216         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
217 }
218
219 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
220 {
221         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
222         sp->magic = HWSIM_STA_MAGIC;
223 }
224
225 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
226 {
227         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
228         sp->magic = 0;
229 }
230
231 struct hwsim_chanctx_priv {
232         u32 magic;
233 };
234
235 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
236
237 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
238 {
239         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
240         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
241 }
242
243 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
244 {
245         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
246         cp->magic = HWSIM_CHANCTX_MAGIC;
247 }
248
249 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
250 {
251         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
252         cp->magic = 0;
253 }
254
255 static unsigned int hwsim_net_id;
256
257 static DEFINE_IDA(hwsim_netgroup_ida);
258
259 struct hwsim_net {
260         int netgroup;
261         u32 wmediumd;
262 };
263
264 static inline int hwsim_net_get_netgroup(struct net *net)
265 {
266         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
267
268         return hwsim_net->netgroup;
269 }
270
271 static inline int hwsim_net_set_netgroup(struct net *net)
272 {
273         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
274
275         hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
276                                              0, 0, GFP_KERNEL);
277         return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
278 }
279
280 static inline u32 hwsim_net_get_wmediumd(struct net *net)
281 {
282         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
283
284         return hwsim_net->wmediumd;
285 }
286
287 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
288 {
289         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
290
291         hwsim_net->wmediumd = portid;
292 }
293
294 static struct class *hwsim_class;
295
296 static struct net_device *hwsim_mon; /* global monitor netdev */
297
298 #define CHAN2G(_freq)  { \
299         .band = NL80211_BAND_2GHZ, \
300         .center_freq = (_freq), \
301         .hw_value = (_freq), \
302         .max_power = 20, \
303 }
304
305 #define CHAN5G(_freq) { \
306         .band = NL80211_BAND_5GHZ, \
307         .center_freq = (_freq), \
308         .hw_value = (_freq), \
309         .max_power = 20, \
310 }
311
312 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
313         CHAN2G(2412), /* Channel 1 */
314         CHAN2G(2417), /* Channel 2 */
315         CHAN2G(2422), /* Channel 3 */
316         CHAN2G(2427), /* Channel 4 */
317         CHAN2G(2432), /* Channel 5 */
318         CHAN2G(2437), /* Channel 6 */
319         CHAN2G(2442), /* Channel 7 */
320         CHAN2G(2447), /* Channel 8 */
321         CHAN2G(2452), /* Channel 9 */
322         CHAN2G(2457), /* Channel 10 */
323         CHAN2G(2462), /* Channel 11 */
324         CHAN2G(2467), /* Channel 12 */
325         CHAN2G(2472), /* Channel 13 */
326         CHAN2G(2484), /* Channel 14 */
327 };
328
329 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
330         CHAN5G(5180), /* Channel 36 */
331         CHAN5G(5200), /* Channel 40 */
332         CHAN5G(5220), /* Channel 44 */
333         CHAN5G(5240), /* Channel 48 */
334
335         CHAN5G(5260), /* Channel 52 */
336         CHAN5G(5280), /* Channel 56 */
337         CHAN5G(5300), /* Channel 60 */
338         CHAN5G(5320), /* Channel 64 */
339
340         CHAN5G(5500), /* Channel 100 */
341         CHAN5G(5520), /* Channel 104 */
342         CHAN5G(5540), /* Channel 108 */
343         CHAN5G(5560), /* Channel 112 */
344         CHAN5G(5580), /* Channel 116 */
345         CHAN5G(5600), /* Channel 120 */
346         CHAN5G(5620), /* Channel 124 */
347         CHAN5G(5640), /* Channel 128 */
348         CHAN5G(5660), /* Channel 132 */
349         CHAN5G(5680), /* Channel 136 */
350         CHAN5G(5700), /* Channel 140 */
351
352         CHAN5G(5745), /* Channel 149 */
353         CHAN5G(5765), /* Channel 153 */
354         CHAN5G(5785), /* Channel 157 */
355         CHAN5G(5805), /* Channel 161 */
356         CHAN5G(5825), /* Channel 165 */
357         CHAN5G(5845), /* Channel 169 */
358 };
359
360 static const struct ieee80211_rate hwsim_rates[] = {
361         { .bitrate = 10 },
362         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
363         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
364         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
365         { .bitrate = 60 },
366         { .bitrate = 90 },
367         { .bitrate = 120 },
368         { .bitrate = 180 },
369         { .bitrate = 240 },
370         { .bitrate = 360 },
371         { .bitrate = 480 },
372         { .bitrate = 540 }
373 };
374
375 #define OUI_QCA 0x001374
376 #define QCA_NL80211_SUBCMD_TEST 1
377 enum qca_nl80211_vendor_subcmds {
378         QCA_WLAN_VENDOR_ATTR_TEST = 8,
379         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
380 };
381
382 static const struct nla_policy
383 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
384         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
385 };
386
387 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
388                                           struct wireless_dev *wdev,
389                                           const void *data, int data_len)
390 {
391         struct sk_buff *skb;
392         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
393         int err;
394         u32 val;
395
396         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
397                         hwsim_vendor_test_policy, NULL);
398         if (err)
399                 return err;
400         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
401                 return -EINVAL;
402         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
403         wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
404
405         /* Send a vendor event as a test. Note that this would not normally be
406          * done within a command handler, but rather, based on some other
407          * trigger. For simplicity, this command is used to trigger the event
408          * here.
409          *
410          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
411          */
412         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
413         if (skb) {
414                 /* skb_put() or nla_put() will fill up data within
415                  * NL80211_ATTR_VENDOR_DATA.
416                  */
417
418                 /* Add vendor data */
419                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
420
421                 /* Send the event - this will call nla_nest_end() */
422                 cfg80211_vendor_event(skb, GFP_KERNEL);
423         }
424
425         /* Send a response to the command */
426         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
427         if (!skb)
428                 return -ENOMEM;
429
430         /* skb_put() or nla_put() will fill up data within
431          * NL80211_ATTR_VENDOR_DATA
432          */
433         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
434
435         return cfg80211_vendor_cmd_reply(skb);
436 }
437
438 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
439         {
440                 .info = { .vendor_id = OUI_QCA,
441                           .subcmd = QCA_NL80211_SUBCMD_TEST },
442                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
443                 .doit = mac80211_hwsim_vendor_cmd_test,
444         }
445 };
446
447 /* Advertise support vendor specific events */
448 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
449         { .vendor_id = OUI_QCA, .subcmd = 1 },
450 };
451
452 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
453         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
454         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
455                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
456 #ifdef CONFIG_MAC80211_MESH
457                                  BIT(NL80211_IFTYPE_MESH_POINT) |
458 #endif
459                                  BIT(NL80211_IFTYPE_AP) |
460                                  BIT(NL80211_IFTYPE_P2P_GO) },
461         /* must be last, see hwsim_if_comb */
462         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
463 };
464
465 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
466         {
467                 .limits = hwsim_if_limits,
468                 /* remove the last entry which is P2P_DEVICE */
469                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
470                 .max_interfaces = 2048,
471                 .num_different_channels = 1,
472                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
473                                        BIT(NL80211_CHAN_WIDTH_20) |
474                                        BIT(NL80211_CHAN_WIDTH_40) |
475                                        BIT(NL80211_CHAN_WIDTH_80) |
476                                        BIT(NL80211_CHAN_WIDTH_160),
477         },
478 };
479
480 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
481         {
482                 .limits = hwsim_if_limits,
483                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
484                 .max_interfaces = 2048,
485                 .num_different_channels = 1,
486                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
487                                        BIT(NL80211_CHAN_WIDTH_20) |
488                                        BIT(NL80211_CHAN_WIDTH_40) |
489                                        BIT(NL80211_CHAN_WIDTH_80) |
490                                        BIT(NL80211_CHAN_WIDTH_160),
491         },
492 };
493
494 static spinlock_t hwsim_radio_lock;
495 static LIST_HEAD(hwsim_radios);
496 static struct workqueue_struct *hwsim_wq;
497 static struct rhashtable hwsim_radios_rht;
498 static int hwsim_radio_idx;
499 static int hwsim_radios_generation = 1;
500
501 static struct platform_driver mac80211_hwsim_driver = {
502         .driver = {
503                 .name = "mac80211_hwsim",
504         },
505 };
506
507 struct mac80211_hwsim_data {
508         struct list_head list;
509         struct rhash_head rht;
510         struct ieee80211_hw *hw;
511         struct device *dev;
512         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
513         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
514         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
515         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
516         struct ieee80211_iface_combination if_combination;
517
518         struct mac_address addresses[2];
519         int channels, idx;
520         bool use_chanctx;
521         bool destroy_on_close;
522         struct work_struct destroy_work;
523         u32 portid;
524         char alpha2[2];
525         const struct ieee80211_regdomain *regd;
526
527         struct ieee80211_channel *tmp_chan;
528         struct ieee80211_channel *roc_chan;
529         u32 roc_duration;
530         struct delayed_work roc_start;
531         struct delayed_work roc_done;
532         struct delayed_work hw_scan;
533         struct cfg80211_scan_request *hw_scan_request;
534         struct ieee80211_vif *hw_scan_vif;
535         int scan_chan_idx;
536         u8 scan_addr[ETH_ALEN];
537         struct {
538                 struct ieee80211_channel *channel;
539                 unsigned long next_start, start, end;
540         } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
541                       ARRAY_SIZE(hwsim_channels_5ghz)];
542
543         struct ieee80211_channel *channel;
544         u64 beacon_int  /* beacon interval in us */;
545         unsigned int rx_filter;
546         bool started, idle, scanning;
547         struct mutex mutex;
548         struct tasklet_hrtimer beacon_timer;
549         enum ps_mode {
550                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
551         } ps;
552         bool ps_poll_pending;
553         struct dentry *debugfs;
554
555         uintptr_t pending_cookie;
556         struct sk_buff_head pending;    /* packets pending */
557         /*
558          * Only radios in the same group can communicate together (the
559          * channel has to match too). Each bit represents a group. A
560          * radio can be in more than one group.
561          */
562         u64 group;
563
564         /* group shared by radios created in the same netns */
565         int netgroup;
566         /* wmediumd portid responsible for netgroup of this radio */
567         u32 wmediumd;
568
569         /* difference between this hw's clock and the real clock, in usecs */
570         s64 tsf_offset;
571         s64 bcn_delta;
572         /* absolute beacon transmission time. Used to cover up "tx" delay. */
573         u64 abs_bcn_ts;
574
575         /* Stats */
576         u64 tx_pkts;
577         u64 rx_pkts;
578         u64 tx_bytes;
579         u64 rx_bytes;
580         u64 tx_dropped;
581         u64 tx_failed;
582 };
583
584 static const struct rhashtable_params hwsim_rht_params = {
585         .nelem_hint = 2,
586         .automatic_shrinking = true,
587         .key_len = ETH_ALEN,
588         .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
589         .head_offset = offsetof(struct mac80211_hwsim_data, rht),
590 };
591
592 struct hwsim_radiotap_hdr {
593         struct ieee80211_radiotap_header hdr;
594         __le64 rt_tsft;
595         u8 rt_flags;
596         u8 rt_rate;
597         __le16 rt_channel;
598         __le16 rt_chbitmask;
599 } __packed;
600
601 struct hwsim_radiotap_ack_hdr {
602         struct ieee80211_radiotap_header hdr;
603         u8 rt_flags;
604         u8 pad;
605         __le16 rt_channel;
606         __le16 rt_chbitmask;
607 } __packed;
608
609 /* MAC80211_HWSIM netlink family */
610 static struct genl_family hwsim_genl_family;
611
612 enum hwsim_multicast_groups {
613         HWSIM_MCGRP_CONFIG,
614 };
615
616 static const struct genl_multicast_group hwsim_mcgrps[] = {
617         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
618 };
619
620 /* MAC80211_HWSIM netlink policy */
621
622 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
623         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
624         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
625         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
626                                .len = IEEE80211_MAX_DATA_LEN },
627         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
628         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
629         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
630         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
631                                  .len = IEEE80211_TX_MAX_RATES *
632                                         sizeof(struct hwsim_tx_rate)},
633         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
634         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
635         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
636         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
637         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
638         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
639         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
640         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
641         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
642         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
643         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
644         [HWSIM_ATTR_PERM_ADDR] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
645 };
646
647 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
648                                     struct sk_buff *skb,
649                                     struct ieee80211_channel *chan);
650
651 /* sysfs attributes */
652 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
653 {
654         struct mac80211_hwsim_data *data = dat;
655         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
656         struct sk_buff *skb;
657         struct ieee80211_pspoll *pspoll;
658
659         if (!vp->assoc)
660                 return;
661
662         wiphy_dbg(data->hw->wiphy,
663                   "%s: send PS-Poll to %pM for aid %d\n",
664                   __func__, vp->bssid, vp->aid);
665
666         skb = dev_alloc_skb(sizeof(*pspoll));
667         if (!skb)
668                 return;
669         pspoll = skb_put(skb, sizeof(*pspoll));
670         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
671                                             IEEE80211_STYPE_PSPOLL |
672                                             IEEE80211_FCTL_PM);
673         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
674         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
675         memcpy(pspoll->ta, mac, ETH_ALEN);
676
677         rcu_read_lock();
678         mac80211_hwsim_tx_frame(data->hw, skb,
679                                 rcu_dereference(vif->chanctx_conf)->def.chan);
680         rcu_read_unlock();
681 }
682
683 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
684                                 struct ieee80211_vif *vif, int ps)
685 {
686         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
687         struct sk_buff *skb;
688         struct ieee80211_hdr *hdr;
689
690         if (!vp->assoc)
691                 return;
692
693         wiphy_dbg(data->hw->wiphy,
694                   "%s: send data::nullfunc to %pM ps=%d\n",
695                   __func__, vp->bssid, ps);
696
697         skb = dev_alloc_skb(sizeof(*hdr));
698         if (!skb)
699                 return;
700         hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
701         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
702                                          IEEE80211_STYPE_NULLFUNC |
703                                          IEEE80211_FCTL_TODS |
704                                          (ps ? IEEE80211_FCTL_PM : 0));
705         hdr->duration_id = cpu_to_le16(0);
706         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
707         memcpy(hdr->addr2, mac, ETH_ALEN);
708         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
709
710         rcu_read_lock();
711         mac80211_hwsim_tx_frame(data->hw, skb,
712                                 rcu_dereference(vif->chanctx_conf)->def.chan);
713         rcu_read_unlock();
714 }
715
716
717 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
718                                    struct ieee80211_vif *vif)
719 {
720         struct mac80211_hwsim_data *data = dat;
721         hwsim_send_nullfunc(data, mac, vif, 1);
722 }
723
724 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
725                                       struct ieee80211_vif *vif)
726 {
727         struct mac80211_hwsim_data *data = dat;
728         hwsim_send_nullfunc(data, mac, vif, 0);
729 }
730
731 static int hwsim_fops_ps_read(void *dat, u64 *val)
732 {
733         struct mac80211_hwsim_data *data = dat;
734         *val = data->ps;
735         return 0;
736 }
737
738 static int hwsim_fops_ps_write(void *dat, u64 val)
739 {
740         struct mac80211_hwsim_data *data = dat;
741         enum ps_mode old_ps;
742
743         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
744             val != PS_MANUAL_POLL)
745                 return -EINVAL;
746
747         if (val == PS_MANUAL_POLL) {
748                 if (data->ps != PS_ENABLED)
749                         return -EINVAL;
750                 local_bh_disable();
751                 ieee80211_iterate_active_interfaces_atomic(
752                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
753                         hwsim_send_ps_poll, data);
754                 local_bh_enable();
755                 return 0;
756         }
757         old_ps = data->ps;
758         data->ps = val;
759
760         local_bh_disable();
761         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
762                 ieee80211_iterate_active_interfaces_atomic(
763                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
764                         hwsim_send_nullfunc_ps, data);
765         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
766                 ieee80211_iterate_active_interfaces_atomic(
767                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
768                         hwsim_send_nullfunc_no_ps, data);
769         }
770         local_bh_enable();
771
772         return 0;
773 }
774
775 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
776                         "%llu\n");
777
778 static int hwsim_write_simulate_radar(void *dat, u64 val)
779 {
780         struct mac80211_hwsim_data *data = dat;
781
782         ieee80211_radar_detected(data->hw);
783
784         return 0;
785 }
786
787 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
788                         hwsim_write_simulate_radar, "%llu\n");
789
790 static int hwsim_fops_group_read(void *dat, u64 *val)
791 {
792         struct mac80211_hwsim_data *data = dat;
793         *val = data->group;
794         return 0;
795 }
796
797 static int hwsim_fops_group_write(void *dat, u64 val)
798 {
799         struct mac80211_hwsim_data *data = dat;
800         data->group = val;
801         return 0;
802 }
803
804 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
805                         hwsim_fops_group_read, hwsim_fops_group_write,
806                         "%llx\n");
807
808 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
809                                         struct net_device *dev)
810 {
811         /* TODO: allow packet injection */
812         dev_kfree_skb(skb);
813         return NETDEV_TX_OK;
814 }
815
816 static inline u64 mac80211_hwsim_get_tsf_raw(void)
817 {
818         return ktime_to_us(ktime_get_real());
819 }
820
821 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
822 {
823         u64 now = mac80211_hwsim_get_tsf_raw();
824         return cpu_to_le64(now + data->tsf_offset);
825 }
826
827 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
828                                   struct ieee80211_vif *vif)
829 {
830         struct mac80211_hwsim_data *data = hw->priv;
831         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
832 }
833
834 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
835                 struct ieee80211_vif *vif, u64 tsf)
836 {
837         struct mac80211_hwsim_data *data = hw->priv;
838         u64 now = mac80211_hwsim_get_tsf(hw, vif);
839         u32 bcn_int = data->beacon_int;
840         u64 delta = abs(tsf - now);
841
842         /* adjust after beaconing with new timestamp at old TBTT */
843         if (tsf > now) {
844                 data->tsf_offset += delta;
845                 data->bcn_delta = do_div(delta, bcn_int);
846         } else {
847                 data->tsf_offset -= delta;
848                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
849         }
850 }
851
852 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
853                                       struct sk_buff *tx_skb,
854                                       struct ieee80211_channel *chan)
855 {
856         struct mac80211_hwsim_data *data = hw->priv;
857         struct sk_buff *skb;
858         struct hwsim_radiotap_hdr *hdr;
859         u16 flags;
860         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
861         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
862
863         if (WARN_ON(!txrate))
864                 return;
865
866         if (!netif_running(hwsim_mon))
867                 return;
868
869         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
870         if (skb == NULL)
871                 return;
872
873         hdr = skb_push(skb, sizeof(*hdr));
874         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
875         hdr->hdr.it_pad = 0;
876         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
877         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
878                                           (1 << IEEE80211_RADIOTAP_RATE) |
879                                           (1 << IEEE80211_RADIOTAP_TSFT) |
880                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
881         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
882         hdr->rt_flags = 0;
883         hdr->rt_rate = txrate->bitrate / 5;
884         hdr->rt_channel = cpu_to_le16(chan->center_freq);
885         flags = IEEE80211_CHAN_2GHZ;
886         if (txrate->flags & IEEE80211_RATE_ERP_G)
887                 flags |= IEEE80211_CHAN_OFDM;
888         else
889                 flags |= IEEE80211_CHAN_CCK;
890         hdr->rt_chbitmask = cpu_to_le16(flags);
891
892         skb->dev = hwsim_mon;
893         skb_reset_mac_header(skb);
894         skb->ip_summed = CHECKSUM_UNNECESSARY;
895         skb->pkt_type = PACKET_OTHERHOST;
896         skb->protocol = htons(ETH_P_802_2);
897         memset(skb->cb, 0, sizeof(skb->cb));
898         netif_rx(skb);
899 }
900
901
902 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
903                                        const u8 *addr)
904 {
905         struct sk_buff *skb;
906         struct hwsim_radiotap_ack_hdr *hdr;
907         u16 flags;
908         struct ieee80211_hdr *hdr11;
909
910         if (!netif_running(hwsim_mon))
911                 return;
912
913         skb = dev_alloc_skb(100);
914         if (skb == NULL)
915                 return;
916
917         hdr = skb_put(skb, sizeof(*hdr));
918         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
919         hdr->hdr.it_pad = 0;
920         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
921         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
922                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
923         hdr->rt_flags = 0;
924         hdr->pad = 0;
925         hdr->rt_channel = cpu_to_le16(chan->center_freq);
926         flags = IEEE80211_CHAN_2GHZ;
927         hdr->rt_chbitmask = cpu_to_le16(flags);
928
929         hdr11 = skb_put(skb, 10);
930         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
931                                            IEEE80211_STYPE_ACK);
932         hdr11->duration_id = cpu_to_le16(0);
933         memcpy(hdr11->addr1, addr, ETH_ALEN);
934
935         skb->dev = hwsim_mon;
936         skb_reset_mac_header(skb);
937         skb->ip_summed = CHECKSUM_UNNECESSARY;
938         skb->pkt_type = PACKET_OTHERHOST;
939         skb->protocol = htons(ETH_P_802_2);
940         memset(skb->cb, 0, sizeof(skb->cb));
941         netif_rx(skb);
942 }
943
944 struct mac80211_hwsim_addr_match_data {
945         u8 addr[ETH_ALEN];
946         bool ret;
947 };
948
949 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
950                                      struct ieee80211_vif *vif)
951 {
952         struct mac80211_hwsim_addr_match_data *md = data;
953
954         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
955                 md->ret = true;
956 }
957
958 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
959                                       const u8 *addr)
960 {
961         struct mac80211_hwsim_addr_match_data md = {
962                 .ret = false,
963         };
964
965         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
966                 return true;
967
968         memcpy(md.addr, addr, ETH_ALEN);
969
970         ieee80211_iterate_active_interfaces_atomic(data->hw,
971                                                    IEEE80211_IFACE_ITER_NORMAL,
972                                                    mac80211_hwsim_addr_iter,
973                                                    &md);
974
975         return md.ret;
976 }
977
978 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
979                            struct sk_buff *skb)
980 {
981         switch (data->ps) {
982         case PS_DISABLED:
983                 return true;
984         case PS_ENABLED:
985                 return false;
986         case PS_AUTO_POLL:
987                 /* TODO: accept (some) Beacons by default and other frames only
988                  * if pending PS-Poll has been sent */
989                 return true;
990         case PS_MANUAL_POLL:
991                 /* Allow unicast frames to own address if there is a pending
992                  * PS-Poll */
993                 if (data->ps_poll_pending &&
994                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
995                         data->ps_poll_pending = false;
996                         return true;
997                 }
998                 return false;
999         }
1000
1001         return true;
1002 }
1003
1004 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1005                                   struct sk_buff *skb, int portid)
1006 {
1007         struct net *net;
1008         bool found = false;
1009         int res = -ENOENT;
1010
1011         rcu_read_lock();
1012         for_each_net_rcu(net) {
1013                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1014                         res = genlmsg_unicast(net, skb, portid);
1015                         found = true;
1016                         break;
1017                 }
1018         }
1019         rcu_read_unlock();
1020
1021         if (!found)
1022                 nlmsg_free(skb);
1023
1024         return res;
1025 }
1026
1027 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1028 {
1029         u16 result = 0;
1030
1031         if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1032                 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1033         if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1034                 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1035         if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1036                 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1037         if (rate->flags & IEEE80211_TX_RC_MCS)
1038                 result |= MAC80211_HWSIM_TX_RC_MCS;
1039         if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1040                 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1041         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1042                 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1043         if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1044                 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1045         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1046                 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1047         if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1048                 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1049         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1050                 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1051         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1052                 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1053
1054         return result;
1055 }
1056
1057 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1058                                        struct sk_buff *my_skb,
1059                                        int dst_portid)
1060 {
1061         struct sk_buff *skb;
1062         struct mac80211_hwsim_data *data = hw->priv;
1063         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1064         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1065         void *msg_head;
1066         unsigned int hwsim_flags = 0;
1067         int i;
1068         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1069         struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1070         uintptr_t cookie;
1071
1072         if (data->ps != PS_DISABLED)
1073                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1074         /* If the queue contains MAX_QUEUE skb's drop some */
1075         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1076                 /* Droping until WARN_QUEUE level */
1077                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1078                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1079                         data->tx_dropped++;
1080                 }
1081         }
1082
1083         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1084         if (skb == NULL)
1085                 goto nla_put_failure;
1086
1087         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1088                                HWSIM_CMD_FRAME);
1089         if (msg_head == NULL) {
1090                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1091                 goto nla_put_failure;
1092         }
1093
1094         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1095                     ETH_ALEN, data->addresses[1].addr))
1096                 goto nla_put_failure;
1097
1098         /* We get the skb->data */
1099         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1100                 goto nla_put_failure;
1101
1102         /* We get the flags for this transmission, and we translate them to
1103            wmediumd flags  */
1104
1105         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1106                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1107
1108         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1109                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1110
1111         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1112                 goto nla_put_failure;
1113
1114         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1115                 goto nla_put_failure;
1116
1117         /* We get the tx control (rate and retries) info*/
1118
1119         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1120                 tx_attempts[i].idx = info->status.rates[i].idx;
1121                 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1122                 tx_attempts[i].count = info->status.rates[i].count;
1123                 tx_attempts_flags[i].flags =
1124                                 trans_tx_rate_flags_ieee2hwsim(
1125                                                 &info->status.rates[i]);
1126         }
1127
1128         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1129                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1130                     tx_attempts))
1131                 goto nla_put_failure;
1132
1133         if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1134                     sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1135                     tx_attempts_flags))
1136                 goto nla_put_failure;
1137
1138         /* We create a cookie to identify this skb */
1139         data->pending_cookie++;
1140         cookie = data->pending_cookie;
1141         info->rate_driver_data[0] = (void *)cookie;
1142         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1143                 goto nla_put_failure;
1144
1145         genlmsg_end(skb, msg_head);
1146         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1147                 goto err_free_txskb;
1148
1149         /* Enqueue the packet */
1150         skb_queue_tail(&data->pending, my_skb);
1151         data->tx_pkts++;
1152         data->tx_bytes += my_skb->len;
1153         return;
1154
1155 nla_put_failure:
1156         nlmsg_free(skb);
1157 err_free_txskb:
1158         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1159         ieee80211_free_txskb(hw, my_skb);
1160         data->tx_failed++;
1161 }
1162
1163 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1164                                struct ieee80211_channel *c2)
1165 {
1166         if (!c1 || !c2)
1167                 return false;
1168
1169         return c1->center_freq == c2->center_freq;
1170 }
1171
1172 struct tx_iter_data {
1173         struct ieee80211_channel *channel;
1174         bool receive;
1175 };
1176
1177 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1178                                    struct ieee80211_vif *vif)
1179 {
1180         struct tx_iter_data *data = _data;
1181
1182         if (!vif->chanctx_conf)
1183                 return;
1184
1185         if (!hwsim_chans_compat(data->channel,
1186                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1187                 return;
1188
1189         data->receive = true;
1190 }
1191
1192 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1193 {
1194         /*
1195          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1196          * e.g. like this:
1197          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1198          * (but you should use a valid OUI, not that)
1199          *
1200          * If anyone wants to 'donate' a radiotap OUI/subns code
1201          * please send a patch removing this #ifdef and changing
1202          * the values accordingly.
1203          */
1204 #ifdef HWSIM_RADIOTAP_OUI
1205         struct ieee80211_vendor_radiotap *rtap;
1206
1207         /*
1208          * Note that this code requires the headroom in the SKB
1209          * that was allocated earlier.
1210          */
1211         rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1212         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1213         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1214         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1215         rtap->subns = 127;
1216
1217         /*
1218          * Radiotap vendor namespaces can (and should) also be
1219          * split into fields by using the standard radiotap
1220          * presence bitmap mechanism. Use just BIT(0) here for
1221          * the presence bitmap.
1222          */
1223         rtap->present = BIT(0);
1224         /* We have 8 bytes of (dummy) data */
1225         rtap->len = 8;
1226         /* For testing, also require it to be aligned */
1227         rtap->align = 8;
1228         /* And also test that padding works, 4 bytes */
1229         rtap->pad = 4;
1230         /* push the data */
1231         memcpy(rtap->data, "ABCDEFGH", 8);
1232         /* make sure to clear padding, mac80211 doesn't */
1233         memset(rtap->data + 8, 0, 4);
1234
1235         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1236 #endif
1237 }
1238
1239 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1240                                           struct sk_buff *skb,
1241                                           struct ieee80211_channel *chan)
1242 {
1243         struct mac80211_hwsim_data *data = hw->priv, *data2;
1244         bool ack = false;
1245         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1246         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1247         struct ieee80211_rx_status rx_status;
1248         u64 now;
1249
1250         memset(&rx_status, 0, sizeof(rx_status));
1251         rx_status.flag |= RX_FLAG_MACTIME_START;
1252         rx_status.freq = chan->center_freq;
1253         rx_status.band = chan->band;
1254         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1255                 rx_status.rate_idx =
1256                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1257                 rx_status.nss =
1258                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1259                 rx_status.encoding = RX_ENC_VHT;
1260         } else {
1261                 rx_status.rate_idx = info->control.rates[0].idx;
1262                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1263                         rx_status.encoding = RX_ENC_HT;
1264         }
1265         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1266                 rx_status.bw = RATE_INFO_BW_40;
1267         else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1268                 rx_status.bw = RATE_INFO_BW_80;
1269         else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1270                 rx_status.bw = RATE_INFO_BW_160;
1271         else
1272                 rx_status.bw = RATE_INFO_BW_20;
1273         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1274                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1275         /* TODO: simulate real signal strength (and optional packet loss) */
1276         rx_status.signal = -50;
1277         if (info->control.vif)
1278                 rx_status.signal += info->control.vif->bss_conf.txpower;
1279
1280         if (data->ps != PS_DISABLED)
1281                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1282
1283         /* release the skb's source info */
1284         skb_orphan(skb);
1285         skb_dst_drop(skb);
1286         skb->mark = 0;
1287         secpath_reset(skb);
1288         nf_reset(skb);
1289
1290         /*
1291          * Get absolute mactime here so all HWs RX at the "same time", and
1292          * absolute TX time for beacon mactime so the timestamp matches.
1293          * Giving beacons a different mactime than non-beacons looks messy, but
1294          * it helps the Toffset be exact and a ~10us mactime discrepancy
1295          * probably doesn't really matter.
1296          */
1297         if (ieee80211_is_beacon(hdr->frame_control) ||
1298             ieee80211_is_probe_resp(hdr->frame_control))
1299                 now = data->abs_bcn_ts;
1300         else
1301                 now = mac80211_hwsim_get_tsf_raw();
1302
1303         /* Copy skb to all enabled radios that are on the current frequency */
1304         spin_lock(&hwsim_radio_lock);
1305         list_for_each_entry(data2, &hwsim_radios, list) {
1306                 struct sk_buff *nskb;
1307                 struct tx_iter_data tx_iter_data = {
1308                         .receive = false,
1309                         .channel = chan,
1310                 };
1311
1312                 if (data == data2)
1313                         continue;
1314
1315                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1316                     !hwsim_ps_rx_ok(data2, skb))
1317                         continue;
1318
1319                 if (!(data->group & data2->group))
1320                         continue;
1321
1322                 if (data->netgroup != data2->netgroup)
1323                         continue;
1324
1325                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1326                     !hwsim_chans_compat(chan, data2->channel)) {
1327                         ieee80211_iterate_active_interfaces_atomic(
1328                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1329                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1330                         if (!tx_iter_data.receive)
1331                                 continue;
1332                 }
1333
1334                 /*
1335                  * reserve some space for our vendor and the normal
1336                  * radiotap header, since we're copying anyway
1337                  */
1338                 if (skb->len < PAGE_SIZE && paged_rx) {
1339                         struct page *page = alloc_page(GFP_ATOMIC);
1340
1341                         if (!page)
1342                                 continue;
1343
1344                         nskb = dev_alloc_skb(128);
1345                         if (!nskb) {
1346                                 __free_page(page);
1347                                 continue;
1348                         }
1349
1350                         memcpy(page_address(page), skb->data, skb->len);
1351                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1352                 } else {
1353                         nskb = skb_copy(skb, GFP_ATOMIC);
1354                         if (!nskb)
1355                                 continue;
1356                 }
1357
1358                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1359                         ack = true;
1360
1361                 rx_status.mactime = now + data2->tsf_offset;
1362
1363                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1364
1365                 mac80211_hwsim_add_vendor_rtap(nskb);
1366
1367                 data2->rx_pkts++;
1368                 data2->rx_bytes += nskb->len;
1369                 ieee80211_rx_irqsafe(data2->hw, nskb);
1370         }
1371         spin_unlock(&hwsim_radio_lock);
1372
1373         return ack;
1374 }
1375
1376 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1377                               struct ieee80211_tx_control *control,
1378                               struct sk_buff *skb)
1379 {
1380         struct mac80211_hwsim_data *data = hw->priv;
1381         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1382         struct ieee80211_hdr *hdr = (void *)skb->data;
1383         struct ieee80211_chanctx_conf *chanctx_conf;
1384         struct ieee80211_channel *channel;
1385         bool ack;
1386         u32 _portid;
1387
1388         if (WARN_ON(skb->len < 10)) {
1389                 /* Should not happen; just a sanity check for addr1 use */
1390                 ieee80211_free_txskb(hw, skb);
1391                 return;
1392         }
1393
1394         if (!data->use_chanctx) {
1395                 channel = data->channel;
1396         } else if (txi->hw_queue == 4) {
1397                 channel = data->tmp_chan;
1398         } else {
1399                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1400                 if (chanctx_conf)
1401                         channel = chanctx_conf->def.chan;
1402                 else
1403                         channel = NULL;
1404         }
1405
1406         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1407                 ieee80211_free_txskb(hw, skb);
1408                 return;
1409         }
1410
1411         if (data->idle && !data->tmp_chan) {
1412                 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1413                 ieee80211_free_txskb(hw, skb);
1414                 return;
1415         }
1416
1417         if (txi->control.vif)
1418                 hwsim_check_magic(txi->control.vif);
1419         if (control->sta)
1420                 hwsim_check_sta_magic(control->sta);
1421
1422         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1423                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1424                                        txi->control.rates,
1425                                        ARRAY_SIZE(txi->control.rates));
1426
1427         if (skb->len >= 24 + 8 &&
1428             ieee80211_is_probe_resp(hdr->frame_control)) {
1429                 /* fake header transmission time */
1430                 struct ieee80211_mgmt *mgmt;
1431                 struct ieee80211_rate *txrate;
1432                 u64 ts;
1433
1434                 mgmt = (struct ieee80211_mgmt *)skb->data;
1435                 txrate = ieee80211_get_tx_rate(hw, txi);
1436                 ts = mac80211_hwsim_get_tsf_raw();
1437                 mgmt->u.probe_resp.timestamp =
1438                         cpu_to_le64(ts + data->tsf_offset +
1439                                     24 * 8 * 10 / txrate->bitrate);
1440         }
1441
1442         mac80211_hwsim_monitor_rx(hw, skb, channel);
1443
1444         /* wmediumd mode check */
1445         _portid = READ_ONCE(data->wmediumd);
1446
1447         if (_portid)
1448                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1449
1450         /* NO wmediumd detected, perfect medium simulation */
1451         data->tx_pkts++;
1452         data->tx_bytes += skb->len;
1453         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1454
1455         if (ack && skb->len >= 16)
1456                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1457
1458         ieee80211_tx_info_clear_status(txi);
1459
1460         /* frame was transmitted at most favorable rate at first attempt */
1461         txi->control.rates[0].count = 1;
1462         txi->control.rates[1].idx = -1;
1463
1464         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1465                 txi->flags |= IEEE80211_TX_STAT_ACK;
1466         ieee80211_tx_status_irqsafe(hw, skb);
1467 }
1468
1469
1470 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1471 {
1472         struct mac80211_hwsim_data *data = hw->priv;
1473         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1474         data->started = true;
1475         return 0;
1476 }
1477
1478
1479 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1480 {
1481         struct mac80211_hwsim_data *data = hw->priv;
1482         data->started = false;
1483         tasklet_hrtimer_cancel(&data->beacon_timer);
1484         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1485 }
1486
1487
1488 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1489                                         struct ieee80211_vif *vif)
1490 {
1491         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1492                   __func__, ieee80211_vif_type_p2p(vif),
1493                   vif->addr);
1494         hwsim_set_magic(vif);
1495
1496         vif->cab_queue = 0;
1497         vif->hw_queue[IEEE80211_AC_VO] = 0;
1498         vif->hw_queue[IEEE80211_AC_VI] = 1;
1499         vif->hw_queue[IEEE80211_AC_BE] = 2;
1500         vif->hw_queue[IEEE80211_AC_BK] = 3;
1501
1502         return 0;
1503 }
1504
1505
1506 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1507                                            struct ieee80211_vif *vif,
1508                                            enum nl80211_iftype newtype,
1509                                            bool newp2p)
1510 {
1511         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1512         wiphy_dbg(hw->wiphy,
1513                   "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1514                   __func__, ieee80211_vif_type_p2p(vif),
1515                     newtype, vif->addr);
1516         hwsim_check_magic(vif);
1517
1518         /*
1519          * interface may change from non-AP to AP in
1520          * which case this needs to be set up again
1521          */
1522         vif->cab_queue = 0;
1523
1524         return 0;
1525 }
1526
1527 static void mac80211_hwsim_remove_interface(
1528         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1529 {
1530         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1531                   __func__, ieee80211_vif_type_p2p(vif),
1532                   vif->addr);
1533         hwsim_check_magic(vif);
1534         hwsim_clear_magic(vif);
1535 }
1536
1537 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1538                                     struct sk_buff *skb,
1539                                     struct ieee80211_channel *chan)
1540 {
1541         struct mac80211_hwsim_data *data = hw->priv;
1542         u32 _pid = READ_ONCE(data->wmediumd);
1543
1544         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1545                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1546                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1547                                        txi->control.rates,
1548                                        ARRAY_SIZE(txi->control.rates));
1549         }
1550
1551         mac80211_hwsim_monitor_rx(hw, skb, chan);
1552
1553         if (_pid)
1554                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1555
1556         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1557         dev_kfree_skb(skb);
1558 }
1559
1560 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1561                                      struct ieee80211_vif *vif)
1562 {
1563         struct mac80211_hwsim_data *data = arg;
1564         struct ieee80211_hw *hw = data->hw;
1565         struct ieee80211_tx_info *info;
1566         struct ieee80211_rate *txrate;
1567         struct ieee80211_mgmt *mgmt;
1568         struct sk_buff *skb;
1569
1570         hwsim_check_magic(vif);
1571
1572         if (vif->type != NL80211_IFTYPE_AP &&
1573             vif->type != NL80211_IFTYPE_MESH_POINT &&
1574             vif->type != NL80211_IFTYPE_ADHOC)
1575                 return;
1576
1577         skb = ieee80211_beacon_get(hw, vif);
1578         if (skb == NULL)
1579                 return;
1580         info = IEEE80211_SKB_CB(skb);
1581         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1582                 ieee80211_get_tx_rates(vif, NULL, skb,
1583                                        info->control.rates,
1584                                        ARRAY_SIZE(info->control.rates));
1585
1586         txrate = ieee80211_get_tx_rate(hw, info);
1587
1588         mgmt = (struct ieee80211_mgmt *) skb->data;
1589         /* fake header transmission time */
1590         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1591         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1592                                                data->tsf_offset +
1593                                                24 * 8 * 10 / txrate->bitrate);
1594
1595         mac80211_hwsim_tx_frame(hw, skb,
1596                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1597
1598         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1599                 ieee80211_csa_finish(vif);
1600 }
1601
1602 static enum hrtimer_restart
1603 mac80211_hwsim_beacon(struct hrtimer *timer)
1604 {
1605         struct mac80211_hwsim_data *data =
1606                 container_of(timer, struct mac80211_hwsim_data,
1607                              beacon_timer.timer);
1608         struct ieee80211_hw *hw = data->hw;
1609         u64 bcn_int = data->beacon_int;
1610         ktime_t next_bcn;
1611
1612         if (!data->started)
1613                 goto out;
1614
1615         ieee80211_iterate_active_interfaces_atomic(
1616                 hw, IEEE80211_IFACE_ITER_NORMAL,
1617                 mac80211_hwsim_beacon_tx, data);
1618
1619         /* beacon at new TBTT + beacon interval */
1620         if (data->bcn_delta) {
1621                 bcn_int -= data->bcn_delta;
1622                 data->bcn_delta = 0;
1623         }
1624
1625         next_bcn = ktime_add(hrtimer_get_expires(timer),
1626                              ns_to_ktime(bcn_int * 1000));
1627         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1628 out:
1629         return HRTIMER_NORESTART;
1630 }
1631
1632 static const char * const hwsim_chanwidths[] = {
1633         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1634         [NL80211_CHAN_WIDTH_20] = "ht20",
1635         [NL80211_CHAN_WIDTH_40] = "ht40",
1636         [NL80211_CHAN_WIDTH_80] = "vht80",
1637         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1638         [NL80211_CHAN_WIDTH_160] = "vht160",
1639 };
1640
1641 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1642 {
1643         struct mac80211_hwsim_data *data = hw->priv;
1644         struct ieee80211_conf *conf = &hw->conf;
1645         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1646                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1647                 [IEEE80211_SMPS_OFF] = "off",
1648                 [IEEE80211_SMPS_STATIC] = "static",
1649                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1650         };
1651         int idx;
1652
1653         if (conf->chandef.chan)
1654                 wiphy_dbg(hw->wiphy,
1655                           "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1656                           __func__,
1657                           conf->chandef.chan->center_freq,
1658                           conf->chandef.center_freq1,
1659                           conf->chandef.center_freq2,
1660                           hwsim_chanwidths[conf->chandef.width],
1661                           !!(conf->flags & IEEE80211_CONF_IDLE),
1662                           !!(conf->flags & IEEE80211_CONF_PS),
1663                           smps_modes[conf->smps_mode]);
1664         else
1665                 wiphy_dbg(hw->wiphy,
1666                           "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1667                           __func__,
1668                           !!(conf->flags & IEEE80211_CONF_IDLE),
1669                           !!(conf->flags & IEEE80211_CONF_PS),
1670                           smps_modes[conf->smps_mode]);
1671
1672         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1673
1674         WARN_ON(conf->chandef.chan && data->use_chanctx);
1675
1676         mutex_lock(&data->mutex);
1677         if (data->scanning && conf->chandef.chan) {
1678                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1679                         if (data->survey_data[idx].channel == data->channel) {
1680                                 data->survey_data[idx].start =
1681                                         data->survey_data[idx].next_start;
1682                                 data->survey_data[idx].end = jiffies;
1683                                 break;
1684                         }
1685                 }
1686
1687                 data->channel = conf->chandef.chan;
1688
1689                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1690                         if (data->survey_data[idx].channel &&
1691                             data->survey_data[idx].channel != data->channel)
1692                                 continue;
1693                         data->survey_data[idx].channel = data->channel;
1694                         data->survey_data[idx].next_start = jiffies;
1695                         break;
1696                 }
1697         } else {
1698                 data->channel = conf->chandef.chan;
1699         }
1700         mutex_unlock(&data->mutex);
1701
1702         if (!data->started || !data->beacon_int)
1703                 tasklet_hrtimer_cancel(&data->beacon_timer);
1704         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1705                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1706                 u32 bcn_int = data->beacon_int;
1707                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1708
1709                 tasklet_hrtimer_start(&data->beacon_timer,
1710                                       ns_to_ktime(until_tbtt * 1000),
1711                                       HRTIMER_MODE_REL);
1712         }
1713
1714         return 0;
1715 }
1716
1717
1718 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1719                                             unsigned int changed_flags,
1720                                             unsigned int *total_flags,u64 multicast)
1721 {
1722         struct mac80211_hwsim_data *data = hw->priv;
1723
1724         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1725
1726         data->rx_filter = 0;
1727         if (*total_flags & FIF_ALLMULTI)
1728                 data->rx_filter |= FIF_ALLMULTI;
1729
1730         *total_flags = data->rx_filter;
1731 }
1732
1733 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1734                                        struct ieee80211_vif *vif)
1735 {
1736         unsigned int *count = data;
1737         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1738
1739         if (vp->bcn_en)
1740                 (*count)++;
1741 }
1742
1743 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1744                                             struct ieee80211_vif *vif,
1745                                             struct ieee80211_bss_conf *info,
1746                                             u32 changed)
1747 {
1748         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1749         struct mac80211_hwsim_data *data = hw->priv;
1750
1751         hwsim_check_magic(vif);
1752
1753         wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1754                   __func__, changed, vif->addr);
1755
1756         if (changed & BSS_CHANGED_BSSID) {
1757                 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1758                           __func__, info->bssid);
1759                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1760         }
1761
1762         if (changed & BSS_CHANGED_ASSOC) {
1763                 wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1764                           info->assoc, info->aid);
1765                 vp->assoc = info->assoc;
1766                 vp->aid = info->aid;
1767         }
1768
1769         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1770                 wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1771                           info->enable_beacon, info->beacon_int);
1772                 vp->bcn_en = info->enable_beacon;
1773                 if (data->started &&
1774                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1775                     info->enable_beacon) {
1776                         u64 tsf, until_tbtt;
1777                         u32 bcn_int;
1778                         data->beacon_int = info->beacon_int * 1024;
1779                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1780                         bcn_int = data->beacon_int;
1781                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1782                         tasklet_hrtimer_start(&data->beacon_timer,
1783                                               ns_to_ktime(until_tbtt * 1000),
1784                                               HRTIMER_MODE_REL);
1785                 } else if (!info->enable_beacon) {
1786                         unsigned int count = 0;
1787                         ieee80211_iterate_active_interfaces_atomic(
1788                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1789                                 mac80211_hwsim_bcn_en_iter, &count);
1790                         wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
1791                                   count);
1792                         if (count == 0) {
1793                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1794                                 data->beacon_int = 0;
1795                         }
1796                 }
1797         }
1798
1799         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1800                 wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1801                           info->use_cts_prot);
1802         }
1803
1804         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1805                 wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1806                           info->use_short_preamble);
1807         }
1808
1809         if (changed & BSS_CHANGED_ERP_SLOT) {
1810                 wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1811         }
1812
1813         if (changed & BSS_CHANGED_HT) {
1814                 wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
1815                           info->ht_operation_mode);
1816         }
1817
1818         if (changed & BSS_CHANGED_BASIC_RATES) {
1819                 wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1820                           (unsigned long long) info->basic_rates);
1821         }
1822
1823         if (changed & BSS_CHANGED_TXPOWER)
1824                 wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1825 }
1826
1827 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1828                                   struct ieee80211_vif *vif,
1829                                   struct ieee80211_sta *sta)
1830 {
1831         hwsim_check_magic(vif);
1832         hwsim_set_sta_magic(sta);
1833
1834         return 0;
1835 }
1836
1837 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1838                                      struct ieee80211_vif *vif,
1839                                      struct ieee80211_sta *sta)
1840 {
1841         hwsim_check_magic(vif);
1842         hwsim_clear_sta_magic(sta);
1843
1844         return 0;
1845 }
1846
1847 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1848                                       struct ieee80211_vif *vif,
1849                                       enum sta_notify_cmd cmd,
1850                                       struct ieee80211_sta *sta)
1851 {
1852         hwsim_check_magic(vif);
1853
1854         switch (cmd) {
1855         case STA_NOTIFY_SLEEP:
1856         case STA_NOTIFY_AWAKE:
1857                 /* TODO: make good use of these flags */
1858                 break;
1859         default:
1860                 WARN(1, "Invalid sta notify: %d\n", cmd);
1861                 break;
1862         }
1863 }
1864
1865 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1866                                   struct ieee80211_sta *sta,
1867                                   bool set)
1868 {
1869         hwsim_check_sta_magic(sta);
1870         return 0;
1871 }
1872
1873 static int mac80211_hwsim_conf_tx(
1874         struct ieee80211_hw *hw,
1875         struct ieee80211_vif *vif, u16 queue,
1876         const struct ieee80211_tx_queue_params *params)
1877 {
1878         wiphy_dbg(hw->wiphy,
1879                   "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1880                   __func__, queue,
1881                   params->txop, params->cw_min,
1882                   params->cw_max, params->aifs);
1883         return 0;
1884 }
1885
1886 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1887                                      struct survey_info *survey)
1888 {
1889         struct mac80211_hwsim_data *hwsim = hw->priv;
1890
1891         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1892                 return -ENOENT;
1893
1894         mutex_lock(&hwsim->mutex);
1895         survey->channel = hwsim->survey_data[idx].channel;
1896         if (!survey->channel) {
1897                 mutex_unlock(&hwsim->mutex);
1898                 return -ENOENT;
1899         }
1900
1901         /*
1902          * Magically conjured dummy values --- this is only ok for simulated hardware.
1903          *
1904          * A real driver which cannot determine real values noise MUST NOT
1905          * report any, especially not a magically conjured ones :-)
1906          */
1907         survey->filled = SURVEY_INFO_NOISE_DBM |
1908                          SURVEY_INFO_TIME |
1909                          SURVEY_INFO_TIME_BUSY;
1910         survey->noise = -92;
1911         survey->time =
1912                 jiffies_to_msecs(hwsim->survey_data[idx].end -
1913                                  hwsim->survey_data[idx].start);
1914         /* report 12.5% of channel time is used */
1915         survey->time_busy = survey->time/8;
1916         mutex_unlock(&hwsim->mutex);
1917
1918         return 0;
1919 }
1920
1921 #ifdef CONFIG_NL80211_TESTMODE
1922 /*
1923  * This section contains example code for using netlink
1924  * attributes with the testmode command in nl80211.
1925  */
1926
1927 /* These enums need to be kept in sync with userspace */
1928 enum hwsim_testmode_attr {
1929         __HWSIM_TM_ATTR_INVALID = 0,
1930         HWSIM_TM_ATTR_CMD       = 1,
1931         HWSIM_TM_ATTR_PS        = 2,
1932
1933         /* keep last */
1934         __HWSIM_TM_ATTR_AFTER_LAST,
1935         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1936 };
1937
1938 enum hwsim_testmode_cmd {
1939         HWSIM_TM_CMD_SET_PS             = 0,
1940         HWSIM_TM_CMD_GET_PS             = 1,
1941         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1942         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1943 };
1944
1945 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1946         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1947         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1948 };
1949
1950 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1951                                        struct ieee80211_vif *vif,
1952                                        void *data, int len)
1953 {
1954         struct mac80211_hwsim_data *hwsim = hw->priv;
1955         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1956         struct sk_buff *skb;
1957         int err, ps;
1958
1959         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1960                         hwsim_testmode_policy, NULL);
1961         if (err)
1962                 return err;
1963
1964         if (!tb[HWSIM_TM_ATTR_CMD])
1965                 return -EINVAL;
1966
1967         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1968         case HWSIM_TM_CMD_SET_PS:
1969                 if (!tb[HWSIM_TM_ATTR_PS])
1970                         return -EINVAL;
1971                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1972                 return hwsim_fops_ps_write(hwsim, ps);
1973         case HWSIM_TM_CMD_GET_PS:
1974                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1975                                                 nla_total_size(sizeof(u32)));
1976                 if (!skb)
1977                         return -ENOMEM;
1978                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1979                         goto nla_put_failure;
1980                 return cfg80211_testmode_reply(skb);
1981         case HWSIM_TM_CMD_STOP_QUEUES:
1982                 ieee80211_stop_queues(hw);
1983                 return 0;
1984         case HWSIM_TM_CMD_WAKE_QUEUES:
1985                 ieee80211_wake_queues(hw);
1986                 return 0;
1987         default:
1988                 return -EOPNOTSUPP;
1989         }
1990
1991  nla_put_failure:
1992         kfree_skb(skb);
1993         return -ENOBUFS;
1994 }
1995 #endif
1996
1997 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1998                                        struct ieee80211_vif *vif,
1999                                        struct ieee80211_ampdu_params *params)
2000 {
2001         struct ieee80211_sta *sta = params->sta;
2002         enum ieee80211_ampdu_mlme_action action = params->action;
2003         u16 tid = params->tid;
2004
2005         switch (action) {
2006         case IEEE80211_AMPDU_TX_START:
2007                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2008                 break;
2009         case IEEE80211_AMPDU_TX_STOP_CONT:
2010         case IEEE80211_AMPDU_TX_STOP_FLUSH:
2011         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2012                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2013                 break;
2014         case IEEE80211_AMPDU_TX_OPERATIONAL:
2015                 break;
2016         case IEEE80211_AMPDU_RX_START:
2017         case IEEE80211_AMPDU_RX_STOP:
2018                 break;
2019         default:
2020                 return -EOPNOTSUPP;
2021         }
2022
2023         return 0;
2024 }
2025
2026 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2027                                  struct ieee80211_vif *vif,
2028                                  u32 queues, bool drop)
2029 {
2030         /* Not implemented, queues only on kernel side */
2031 }
2032
2033 static void hw_scan_work(struct work_struct *work)
2034 {
2035         struct mac80211_hwsim_data *hwsim =
2036                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2037         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2038         int dwell, i;
2039
2040         mutex_lock(&hwsim->mutex);
2041         if (hwsim->scan_chan_idx >= req->n_channels) {
2042                 struct cfg80211_scan_info info = {
2043                         .aborted = false,
2044                 };
2045
2046                 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2047                 ieee80211_scan_completed(hwsim->hw, &info);
2048                 hwsim->hw_scan_request = NULL;
2049                 hwsim->hw_scan_vif = NULL;
2050                 hwsim->tmp_chan = NULL;
2051                 mutex_unlock(&hwsim->mutex);
2052                 return;
2053         }
2054
2055         wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2056                   req->channels[hwsim->scan_chan_idx]->center_freq);
2057
2058         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2059         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2060                                       IEEE80211_CHAN_RADAR) ||
2061             !req->n_ssids) {
2062                 dwell = 120;
2063         } else {
2064                 dwell = 30;
2065                 /* send probes */
2066                 for (i = 0; i < req->n_ssids; i++) {
2067                         struct sk_buff *probe;
2068                         struct ieee80211_mgmt *mgmt;
2069
2070                         probe = ieee80211_probereq_get(hwsim->hw,
2071                                                        hwsim->scan_addr,
2072                                                        req->ssids[i].ssid,
2073                                                        req->ssids[i].ssid_len,
2074                                                        req->ie_len);
2075                         if (!probe)
2076                                 continue;
2077
2078                         mgmt = (struct ieee80211_mgmt *) probe->data;
2079                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2080                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2081
2082                         if (req->ie_len)
2083                                 skb_put_data(probe, req->ie, req->ie_len);
2084
2085                         local_bh_disable();
2086                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2087                                                 hwsim->tmp_chan);
2088                         local_bh_enable();
2089                 }
2090         }
2091         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2092                                      msecs_to_jiffies(dwell));
2093         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2094         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2095         hwsim->survey_data[hwsim->scan_chan_idx].end =
2096                 jiffies + msecs_to_jiffies(dwell);
2097         hwsim->scan_chan_idx++;
2098         mutex_unlock(&hwsim->mutex);
2099 }
2100
2101 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2102                                   struct ieee80211_vif *vif,
2103                                   struct ieee80211_scan_request *hw_req)
2104 {
2105         struct mac80211_hwsim_data *hwsim = hw->priv;
2106         struct cfg80211_scan_request *req = &hw_req->req;
2107
2108         mutex_lock(&hwsim->mutex);
2109         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2110                 mutex_unlock(&hwsim->mutex);
2111                 return -EBUSY;
2112         }
2113         hwsim->hw_scan_request = req;
2114         hwsim->hw_scan_vif = vif;
2115         hwsim->scan_chan_idx = 0;
2116         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2117                 get_random_mask_addr(hwsim->scan_addr,
2118                                      hw_req->req.mac_addr,
2119                                      hw_req->req.mac_addr_mask);
2120         else
2121                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2122         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2123         mutex_unlock(&hwsim->mutex);
2124
2125         wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2126
2127         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2128
2129         return 0;
2130 }
2131
2132 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2133                                           struct ieee80211_vif *vif)
2134 {
2135         struct mac80211_hwsim_data *hwsim = hw->priv;
2136         struct cfg80211_scan_info info = {
2137                 .aborted = true,
2138         };
2139
2140         wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2141
2142         cancel_delayed_work_sync(&hwsim->hw_scan);
2143
2144         mutex_lock(&hwsim->mutex);
2145         ieee80211_scan_completed(hwsim->hw, &info);
2146         hwsim->tmp_chan = NULL;
2147         hwsim->hw_scan_request = NULL;
2148         hwsim->hw_scan_vif = NULL;
2149         mutex_unlock(&hwsim->mutex);
2150 }
2151
2152 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2153                                    struct ieee80211_vif *vif,
2154                                    const u8 *mac_addr)
2155 {
2156         struct mac80211_hwsim_data *hwsim = hw->priv;
2157
2158         mutex_lock(&hwsim->mutex);
2159
2160         if (hwsim->scanning) {
2161                 pr_debug("two hwsim sw_scans detected!\n");
2162                 goto out;
2163         }
2164
2165         pr_debug("hwsim sw_scan request, prepping stuff\n");
2166
2167         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2168         hwsim->scanning = true;
2169         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2170
2171 out:
2172         mutex_unlock(&hwsim->mutex);
2173 }
2174
2175 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2176                                             struct ieee80211_vif *vif)
2177 {
2178         struct mac80211_hwsim_data *hwsim = hw->priv;
2179
2180         mutex_lock(&hwsim->mutex);
2181
2182         pr_debug("hwsim sw_scan_complete\n");
2183         hwsim->scanning = false;
2184         eth_zero_addr(hwsim->scan_addr);
2185
2186         mutex_unlock(&hwsim->mutex);
2187 }
2188
2189 static void hw_roc_start(struct work_struct *work)
2190 {
2191         struct mac80211_hwsim_data *hwsim =
2192                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2193
2194         mutex_lock(&hwsim->mutex);
2195
2196         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2197         hwsim->tmp_chan = hwsim->roc_chan;
2198         ieee80211_ready_on_channel(hwsim->hw);
2199
2200         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2201                                      msecs_to_jiffies(hwsim->roc_duration));
2202
2203         mutex_unlock(&hwsim->mutex);
2204 }
2205
2206 static void hw_roc_done(struct work_struct *work)
2207 {
2208         struct mac80211_hwsim_data *hwsim =
2209                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2210
2211         mutex_lock(&hwsim->mutex);
2212         ieee80211_remain_on_channel_expired(hwsim->hw);
2213         hwsim->tmp_chan = NULL;
2214         mutex_unlock(&hwsim->mutex);
2215
2216         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2217 }
2218
2219 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2220                               struct ieee80211_vif *vif,
2221                               struct ieee80211_channel *chan,
2222                               int duration,
2223                               enum ieee80211_roc_type type)
2224 {
2225         struct mac80211_hwsim_data *hwsim = hw->priv;
2226
2227         mutex_lock(&hwsim->mutex);
2228         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2229                 mutex_unlock(&hwsim->mutex);
2230                 return -EBUSY;
2231         }
2232
2233         hwsim->roc_chan = chan;
2234         hwsim->roc_duration = duration;
2235         mutex_unlock(&hwsim->mutex);
2236
2237         wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2238                   chan->center_freq, duration);
2239         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2240
2241         return 0;
2242 }
2243
2244 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2245 {
2246         struct mac80211_hwsim_data *hwsim = hw->priv;
2247
2248         cancel_delayed_work_sync(&hwsim->roc_start);
2249         cancel_delayed_work_sync(&hwsim->roc_done);
2250
2251         mutex_lock(&hwsim->mutex);
2252         hwsim->tmp_chan = NULL;
2253         mutex_unlock(&hwsim->mutex);
2254
2255         wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2256
2257         return 0;
2258 }
2259
2260 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2261                                       struct ieee80211_chanctx_conf *ctx)
2262 {
2263         hwsim_set_chanctx_magic(ctx);
2264         wiphy_dbg(hw->wiphy,
2265                   "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2266                   ctx->def.chan->center_freq, ctx->def.width,
2267                   ctx->def.center_freq1, ctx->def.center_freq2);
2268         return 0;
2269 }
2270
2271 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2272                                           struct ieee80211_chanctx_conf *ctx)
2273 {
2274         wiphy_dbg(hw->wiphy,
2275                   "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2276                   ctx->def.chan->center_freq, ctx->def.width,
2277                   ctx->def.center_freq1, ctx->def.center_freq2);
2278         hwsim_check_chanctx_magic(ctx);
2279         hwsim_clear_chanctx_magic(ctx);
2280 }
2281
2282 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2283                                           struct ieee80211_chanctx_conf *ctx,
2284                                           u32 changed)
2285 {
2286         hwsim_check_chanctx_magic(ctx);
2287         wiphy_dbg(hw->wiphy,
2288                   "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2289                   ctx->def.chan->center_freq, ctx->def.width,
2290                   ctx->def.center_freq1, ctx->def.center_freq2);
2291 }
2292
2293 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2294                                              struct ieee80211_vif *vif,
2295                                              struct ieee80211_chanctx_conf *ctx)
2296 {
2297         hwsim_check_magic(vif);
2298         hwsim_check_chanctx_magic(ctx);
2299
2300         return 0;
2301 }
2302
2303 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2304                                                 struct ieee80211_vif *vif,
2305                                                 struct ieee80211_chanctx_conf *ctx)
2306 {
2307         hwsim_check_magic(vif);
2308         hwsim_check_chanctx_magic(ctx);
2309 }
2310
2311 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2312         "tx_pkts_nic",
2313         "tx_bytes_nic",
2314         "rx_pkts_nic",
2315         "rx_bytes_nic",
2316         "d_tx_dropped",
2317         "d_tx_failed",
2318         "d_ps_mode",
2319         "d_group",
2320 };
2321
2322 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2323
2324 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2325                                           struct ieee80211_vif *vif,
2326                                           u32 sset, u8 *data)
2327 {
2328         if (sset == ETH_SS_STATS)
2329                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2330                        sizeof(mac80211_hwsim_gstrings_stats));
2331 }
2332
2333 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2334                                             struct ieee80211_vif *vif, int sset)
2335 {
2336         if (sset == ETH_SS_STATS)
2337                 return MAC80211_HWSIM_SSTATS_LEN;
2338         return 0;
2339 }
2340
2341 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2342                                         struct ieee80211_vif *vif,
2343                                         struct ethtool_stats *stats, u64 *data)
2344 {
2345         struct mac80211_hwsim_data *ar = hw->priv;
2346         int i = 0;
2347
2348         data[i++] = ar->tx_pkts;
2349         data[i++] = ar->tx_bytes;
2350         data[i++] = ar->rx_pkts;
2351         data[i++] = ar->rx_bytes;
2352         data[i++] = ar->tx_dropped;
2353         data[i++] = ar->tx_failed;
2354         data[i++] = ar->ps;
2355         data[i++] = ar->group;
2356
2357         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2358 }
2359
2360 #define HWSIM_COMMON_OPS                                        \
2361         .tx = mac80211_hwsim_tx,                                \
2362         .start = mac80211_hwsim_start,                          \
2363         .stop = mac80211_hwsim_stop,                            \
2364         .add_interface = mac80211_hwsim_add_interface,          \
2365         .change_interface = mac80211_hwsim_change_interface,    \
2366         .remove_interface = mac80211_hwsim_remove_interface,    \
2367         .config = mac80211_hwsim_config,                        \
2368         .configure_filter = mac80211_hwsim_configure_filter,    \
2369         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2370         .sta_add = mac80211_hwsim_sta_add,                      \
2371         .sta_remove = mac80211_hwsim_sta_remove,                \
2372         .sta_notify = mac80211_hwsim_sta_notify,                \
2373         .set_tim = mac80211_hwsim_set_tim,                      \
2374         .conf_tx = mac80211_hwsim_conf_tx,                      \
2375         .get_survey = mac80211_hwsim_get_survey,                \
2376         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2377         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2378         .flush = mac80211_hwsim_flush,                          \
2379         .get_tsf = mac80211_hwsim_get_tsf,                      \
2380         .set_tsf = mac80211_hwsim_set_tsf,                      \
2381         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2382         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2383         .get_et_strings = mac80211_hwsim_get_et_strings,
2384
2385 static const struct ieee80211_ops mac80211_hwsim_ops = {
2386         HWSIM_COMMON_OPS
2387         .sw_scan_start = mac80211_hwsim_sw_scan,
2388         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2389 };
2390
2391 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2392         HWSIM_COMMON_OPS
2393         .hw_scan = mac80211_hwsim_hw_scan,
2394         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2395         .sw_scan_start = NULL,
2396         .sw_scan_complete = NULL,
2397         .remain_on_channel = mac80211_hwsim_roc,
2398         .cancel_remain_on_channel = mac80211_hwsim_croc,
2399         .add_chanctx = mac80211_hwsim_add_chanctx,
2400         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2401         .change_chanctx = mac80211_hwsim_change_chanctx,
2402         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2403         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2404 };
2405
2406 struct hwsim_new_radio_params {
2407         unsigned int channels;
2408         const char *reg_alpha2;
2409         const struct ieee80211_regdomain *regd;
2410         bool reg_strict;
2411         bool p2p_device;
2412         bool use_chanctx;
2413         bool destroy_on_close;
2414         const char *hwname;
2415         bool no_vif;
2416         const u8 *perm_addr;
2417 };
2418
2419 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2420                                    struct genl_info *info)
2421 {
2422         if (info)
2423                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2424                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2425         else
2426                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2427                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2428 }
2429
2430 static int append_radio_msg(struct sk_buff *skb, int id,
2431                             struct hwsim_new_radio_params *param)
2432 {
2433         int ret;
2434
2435         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2436         if (ret < 0)
2437                 return ret;
2438
2439         if (param->channels) {
2440                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2441                 if (ret < 0)
2442                         return ret;
2443         }
2444
2445         if (param->reg_alpha2) {
2446                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2447                               param->reg_alpha2);
2448                 if (ret < 0)
2449                         return ret;
2450         }
2451
2452         if (param->regd) {
2453                 int i;
2454
2455                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2456                         if (hwsim_world_regdom_custom[i] != param->regd)
2457                                 continue;
2458
2459                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2460                         if (ret < 0)
2461                                 return ret;
2462                         break;
2463                 }
2464         }
2465
2466         if (param->reg_strict) {
2467                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2468                 if (ret < 0)
2469                         return ret;
2470         }
2471
2472         if (param->p2p_device) {
2473                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2474                 if (ret < 0)
2475                         return ret;
2476         }
2477
2478         if (param->use_chanctx) {
2479                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2480                 if (ret < 0)
2481                         return ret;
2482         }
2483
2484         if (param->hwname) {
2485                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2486                               strlen(param->hwname), param->hwname);
2487                 if (ret < 0)
2488                         return ret;
2489         }
2490
2491         return 0;
2492 }
2493
2494 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2495                                   struct hwsim_new_radio_params *param)
2496 {
2497         struct sk_buff *mcast_skb;
2498         void *data;
2499
2500         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2501         if (!mcast_skb)
2502                 return;
2503
2504         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2505                            HWSIM_CMD_NEW_RADIO);
2506         if (!data)
2507                 goto out_err;
2508
2509         if (append_radio_msg(mcast_skb, id, param) < 0)
2510                 goto out_err;
2511
2512         genlmsg_end(mcast_skb, data);
2513
2514         hwsim_mcast_config_msg(mcast_skb, info);
2515         return;
2516
2517 out_err:
2518         nlmsg_free(mcast_skb);
2519 }
2520
2521 static const struct ieee80211_sband_iftype_data he_capa_2ghz = {
2522         /* TODO: should we support other types, e.g., P2P?*/
2523         .types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
2524         .he_cap = {
2525                 .has_he = true,
2526                 .he_cap_elem = {
2527                         .mac_cap_info[0] =
2528                                 IEEE80211_HE_MAC_CAP0_HTC_HE,
2529                         .mac_cap_info[1] =
2530                                 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2531                                 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_QOS_8,
2532                         .mac_cap_info[2] =
2533                                 IEEE80211_HE_MAC_CAP2_BSR |
2534                                 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2535                                 IEEE80211_HE_MAC_CAP2_ACK_EN,
2536                         .mac_cap_info[3] =
2537                                 IEEE80211_HE_MAC_CAP3_GRP_ADDR_MULTI_STA_BA_DL_MU |
2538                                 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2539                                 IEEE80211_HE_MAC_CAP3_MAX_A_AMPDU_LEN_EXP_VHT_2,
2540                         .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2541                         .phy_cap_info[0] =
2542                                 IEEE80211_HE_PHY_CAP0_DUAL_BAND,
2543                         .phy_cap_info[1] =
2544                                 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2545                                 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2546                                 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2547                                 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_MAX_NSTS,
2548                         .phy_cap_info[2] =
2549                                 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2550                                 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2551                                 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2552                                 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2553                                 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2554
2555                         /* Leave all the other PHY capability bytes unset, as
2556                          * DCM, beam forming, RU and PPE threshold information
2557                          * are not supported
2558                          */
2559                 },
2560                 .he_mcs_nss_supp = {
2561                         .rx_mcs_80 = cpu_to_le16(0xfffa),
2562                         .tx_mcs_80 = cpu_to_le16(0xfffa),
2563                         .rx_mcs_160 = cpu_to_le16(0xffff),
2564                         .tx_mcs_160 = cpu_to_le16(0xffff),
2565                         .rx_mcs_80p80 = cpu_to_le16(0xffff),
2566                         .tx_mcs_80p80 = cpu_to_le16(0xffff),
2567                 },
2568         },
2569 };
2570
2571 static const struct ieee80211_sband_iftype_data he_capa_5ghz = {
2572         /* TODO: should we support other types, e.g., P2P?*/
2573         .types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
2574         .he_cap = {
2575                 .has_he = true,
2576                 .he_cap_elem = {
2577                         .mac_cap_info[0] =
2578                                 IEEE80211_HE_MAC_CAP0_HTC_HE,
2579                         .mac_cap_info[1] =
2580                                 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2581                                 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_QOS_8,
2582                         .mac_cap_info[2] =
2583                                 IEEE80211_HE_MAC_CAP2_BSR |
2584                                 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2585                                 IEEE80211_HE_MAC_CAP2_ACK_EN,
2586                         .mac_cap_info[3] =
2587                                 IEEE80211_HE_MAC_CAP3_GRP_ADDR_MULTI_STA_BA_DL_MU |
2588                                 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2589                                 IEEE80211_HE_MAC_CAP3_MAX_A_AMPDU_LEN_EXP_VHT_2,
2590                         .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2591                         .phy_cap_info[0] =
2592                                 IEEE80211_HE_PHY_CAP0_DUAL_BAND |
2593                                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2594                                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2595                                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2596                         .phy_cap_info[1] =
2597                                 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2598                                 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2599                                 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2600                                 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_MAX_NSTS,
2601                         .phy_cap_info[2] =
2602                                 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2603                                 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2604                                 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2605                                 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2606                                 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2607
2608                         /* Leave all the other PHY capability bytes unset, as
2609                          * DCM, beam forming, RU and PPE threshold information
2610                          * are not supported
2611                          */
2612                 },
2613                 .he_mcs_nss_supp = {
2614                         .rx_mcs_80 = cpu_to_le16(0xfffa),
2615                         .tx_mcs_80 = cpu_to_le16(0xfffa),
2616                         .rx_mcs_160 = cpu_to_le16(0xfffa),
2617                         .tx_mcs_160 = cpu_to_le16(0xfffa),
2618                         .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2619                         .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2620                 },
2621         },
2622 };
2623
2624 static void mac80211_hswim_he_capab(struct ieee80211_supported_band *sband)
2625 {
2626         if (sband->band == NL80211_BAND_2GHZ)
2627                 sband->iftype_data =
2628                         (struct ieee80211_sband_iftype_data *)&he_capa_2ghz;
2629         else if (sband->band == NL80211_BAND_5GHZ)
2630                 sband->iftype_data =
2631                         (struct ieee80211_sband_iftype_data *)&he_capa_5ghz;
2632         else
2633                 return;
2634
2635         sband->n_iftype_data = 1;
2636 }
2637
2638 static int mac80211_hwsim_new_radio(struct genl_info *info,
2639                                     struct hwsim_new_radio_params *param)
2640 {
2641         int err;
2642         u8 addr[ETH_ALEN];
2643         struct mac80211_hwsim_data *data;
2644         struct ieee80211_hw *hw;
2645         enum nl80211_band band;
2646         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2647         struct net *net;
2648         int idx;
2649
2650         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2651                 return -EINVAL;
2652
2653         spin_lock_bh(&hwsim_radio_lock);
2654         idx = hwsim_radio_idx++;
2655         spin_unlock_bh(&hwsim_radio_lock);
2656
2657         if (param->use_chanctx)
2658                 ops = &mac80211_hwsim_mchan_ops;
2659         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2660         if (!hw) {
2661                 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2662                 err = -ENOMEM;
2663                 goto failed;
2664         }
2665
2666         /* ieee80211_alloc_hw_nm may have used a default name */
2667         param->hwname = wiphy_name(hw->wiphy);
2668
2669         if (info)
2670                 net = genl_info_net(info);
2671         else
2672                 net = &init_net;
2673         wiphy_net_set(hw->wiphy, net);
2674
2675         data = hw->priv;
2676         data->hw = hw;
2677
2678         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2679         if (IS_ERR(data->dev)) {
2680                 printk(KERN_DEBUG
2681                        "mac80211_hwsim: device_create failed (%ld)\n",
2682                        PTR_ERR(data->dev));
2683                 err = -ENOMEM;
2684                 goto failed_drvdata;
2685         }
2686         data->dev->driver = &mac80211_hwsim_driver.driver;
2687         err = device_bind_driver(data->dev);
2688         if (err != 0) {
2689                 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2690                        err);
2691                 goto failed_bind;
2692         }
2693
2694         skb_queue_head_init(&data->pending);
2695
2696         SET_IEEE80211_DEV(hw, data->dev);
2697         if (!param->perm_addr) {
2698                 eth_zero_addr(addr);
2699                 addr[0] = 0x02;
2700                 addr[3] = idx >> 8;
2701                 addr[4] = idx;
2702                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2703                 /* Why need here second address ? */
2704                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2705                 data->addresses[1].addr[0] |= 0x40;
2706                 hw->wiphy->n_addresses = 2;
2707                 hw->wiphy->addresses = data->addresses;
2708                 /* possible address clash is checked at hash table insertion */
2709         } else {
2710                 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
2711                 /* compatibility with automatically generated mac addr */
2712                 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
2713                 hw->wiphy->n_addresses = 2;
2714                 hw->wiphy->addresses = data->addresses;
2715         }
2716
2717         data->channels = param->channels;
2718         data->use_chanctx = param->use_chanctx;
2719         data->idx = idx;
2720         data->destroy_on_close = param->destroy_on_close;
2721         if (info)
2722                 data->portid = info->snd_portid;
2723
2724         if (data->use_chanctx) {
2725                 hw->wiphy->max_scan_ssids = 255;
2726                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2727                 hw->wiphy->max_remain_on_channel_duration = 1000;
2728                 hw->wiphy->iface_combinations = &data->if_combination;
2729                 if (param->p2p_device)
2730                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2731                 else
2732                         data->if_combination = hwsim_if_comb[0];
2733                 hw->wiphy->n_iface_combinations = 1;
2734                 /* For channels > 1 DFS is not allowed */
2735                 data->if_combination.radar_detect_widths = 0;
2736                 data->if_combination.num_different_channels = data->channels;
2737         } else if (param->p2p_device) {
2738                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2739                 hw->wiphy->n_iface_combinations =
2740                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2741         } else {
2742                 hw->wiphy->iface_combinations = hwsim_if_comb;
2743                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2744         }
2745
2746         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2747         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2748         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2749
2750         hw->queues = 5;
2751         hw->offchannel_tx_hw_queue = 4;
2752         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2753                                      BIT(NL80211_IFTYPE_AP) |
2754                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2755                                      BIT(NL80211_IFTYPE_P2P_GO) |
2756                                      BIT(NL80211_IFTYPE_ADHOC) |
2757                                      BIT(NL80211_IFTYPE_MESH_POINT);
2758
2759         if (param->p2p_device)
2760                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2761
2762         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2763         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2764         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2765         ieee80211_hw_set(hw, QUEUE_CONTROL);
2766         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2767         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2768         ieee80211_hw_set(hw, MFP_CAPABLE);
2769         ieee80211_hw_set(hw, SIGNAL_DBM);
2770         ieee80211_hw_set(hw, SUPPORTS_PS);
2771         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2772         if (rctbl)
2773                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2774
2775         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2776                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2777                             WIPHY_FLAG_AP_UAPSD |
2778                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2779         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2780                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2781                                NL80211_FEATURE_STATIC_SMPS |
2782                                NL80211_FEATURE_DYNAMIC_SMPS |
2783                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2784         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2785
2786         /* ask mac80211 to reserve space for magic */
2787         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2788         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2789         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2790
2791         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2792                 sizeof(hwsim_channels_2ghz));
2793         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2794                 sizeof(hwsim_channels_5ghz));
2795         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2796
2797         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2798                 struct ieee80211_supported_band *sband = &data->bands[band];
2799
2800                 sband->band = band;
2801
2802                 switch (band) {
2803                 case NL80211_BAND_2GHZ:
2804                         sband->channels = data->channels_2ghz;
2805                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2806                         sband->bitrates = data->rates;
2807                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2808                         break;
2809                 case NL80211_BAND_5GHZ:
2810                         sband->channels = data->channels_5ghz;
2811                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2812                         sband->bitrates = data->rates + 4;
2813                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2814
2815                         sband->vht_cap.vht_supported = true;
2816                         sband->vht_cap.cap =
2817                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2818                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2819                                 IEEE80211_VHT_CAP_RXLDPC |
2820                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2821                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2822                                 IEEE80211_VHT_CAP_TXSTBC |
2823                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2824                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2825                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2826                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2827                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2828                         sband->vht_cap.vht_mcs.rx_mcs_map =
2829                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2830                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2831                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2832                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2833                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2834                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2835                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2836                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2837                         sband->vht_cap.vht_mcs.tx_mcs_map =
2838                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2839                         break;
2840                 default:
2841                         continue;
2842                 }
2843
2844                 sband->ht_cap.ht_supported = true;
2845                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2846                                     IEEE80211_HT_CAP_GRN_FLD |
2847                                     IEEE80211_HT_CAP_SGI_20 |
2848                                     IEEE80211_HT_CAP_SGI_40 |
2849                                     IEEE80211_HT_CAP_DSSSCCK40;
2850                 sband->ht_cap.ampdu_factor = 0x3;
2851                 sband->ht_cap.ampdu_density = 0x6;
2852                 memset(&sband->ht_cap.mcs, 0,
2853                        sizeof(sband->ht_cap.mcs));
2854                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2855                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2856                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2857
2858                 mac80211_hswim_he_capab(sband);
2859
2860                 hw->wiphy->bands[band] = sband;
2861         }
2862
2863         /* By default all radios belong to the first group */
2864         data->group = 1;
2865         mutex_init(&data->mutex);
2866
2867         data->netgroup = hwsim_net_get_netgroup(net);
2868         data->wmediumd = hwsim_net_get_wmediumd(net);
2869
2870         /* Enable frame retransmissions for lossy channels */
2871         hw->max_rates = 4;
2872         hw->max_rate_tries = 11;
2873
2874         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2875         hw->wiphy->n_vendor_commands =
2876                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2877         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2878         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2879
2880         if (param->reg_strict)
2881                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2882         if (param->regd) {
2883                 data->regd = param->regd;
2884                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2885                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2886                 /* give the regulatory workqueue a chance to run */
2887                 schedule_timeout_interruptible(1);
2888         }
2889
2890         if (param->no_vif)
2891                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2892
2893         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2894
2895         err = ieee80211_register_hw(hw);
2896         if (err < 0) {
2897                 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2898                        err);
2899                 goto failed_hw;
2900         }
2901
2902         wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2903
2904         if (param->reg_alpha2) {
2905                 data->alpha2[0] = param->reg_alpha2[0];
2906                 data->alpha2[1] = param->reg_alpha2[1];
2907                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2908         }
2909
2910         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2911         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2912         debugfs_create_file("group", 0666, data->debugfs, data,
2913                             &hwsim_fops_group);
2914         if (!data->use_chanctx)
2915                 debugfs_create_file("dfs_simulate_radar", 0222,
2916                                     data->debugfs,
2917                                     data, &hwsim_simulate_radar);
2918
2919         tasklet_hrtimer_init(&data->beacon_timer,
2920                              mac80211_hwsim_beacon,
2921                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2922
2923         spin_lock_bh(&hwsim_radio_lock);
2924         err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
2925                                      hwsim_rht_params);
2926         if (err < 0) {
2927                 if (info) {
2928                         GENL_SET_ERR_MSG(info, "perm addr already present");
2929                         NL_SET_BAD_ATTR(info->extack,
2930                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
2931                 }
2932                 spin_unlock_bh(&hwsim_radio_lock);
2933                 goto failed_final_insert;
2934         }
2935
2936         list_add_tail(&data->list, &hwsim_radios);
2937         hwsim_radios_generation++;
2938         spin_unlock_bh(&hwsim_radio_lock);
2939
2940         if (idx > 0)
2941                 hwsim_mcast_new_radio(idx, info, param);
2942
2943         return idx;
2944
2945 failed_final_insert:
2946         debugfs_remove_recursive(data->debugfs);
2947         ieee80211_unregister_hw(data->hw);
2948 failed_hw:
2949         device_release_driver(data->dev);
2950 failed_bind:
2951         device_unregister(data->dev);
2952 failed_drvdata:
2953         ieee80211_free_hw(hw);
2954 failed:
2955         return err;
2956 }
2957
2958 static void hwsim_mcast_del_radio(int id, const char *hwname,
2959                                   struct genl_info *info)
2960 {
2961         struct sk_buff *skb;
2962         void *data;
2963         int ret;
2964
2965         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2966         if (!skb)
2967                 return;
2968
2969         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2970                            HWSIM_CMD_DEL_RADIO);
2971         if (!data)
2972                 goto error;
2973
2974         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2975         if (ret < 0)
2976                 goto error;
2977
2978         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2979                       hwname);
2980         if (ret < 0)
2981                 goto error;
2982
2983         genlmsg_end(skb, data);
2984
2985         hwsim_mcast_config_msg(skb, info);
2986
2987         return;
2988
2989 error:
2990         nlmsg_free(skb);
2991 }
2992
2993 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2994                                      const char *hwname,
2995                                      struct genl_info *info)
2996 {
2997         hwsim_mcast_del_radio(data->idx, hwname, info);
2998         debugfs_remove_recursive(data->debugfs);
2999         ieee80211_unregister_hw(data->hw);
3000         device_release_driver(data->dev);
3001         device_unregister(data->dev);
3002         ieee80211_free_hw(data->hw);
3003 }
3004
3005 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3006                                     struct mac80211_hwsim_data *data,
3007                                     u32 portid, u32 seq,
3008                                     struct netlink_callback *cb, int flags)
3009 {
3010         void *hdr;
3011         struct hwsim_new_radio_params param = { };
3012         int res = -EMSGSIZE;
3013
3014         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3015                           HWSIM_CMD_GET_RADIO);
3016         if (!hdr)
3017                 return -EMSGSIZE;
3018
3019         if (cb)
3020                 genl_dump_check_consistent(cb, hdr);
3021
3022         if (data->alpha2[0] && data->alpha2[1])
3023                 param.reg_alpha2 = data->alpha2;
3024
3025         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3026                                         REGULATORY_STRICT_REG);
3027         param.p2p_device = !!(data->hw->wiphy->interface_modes &
3028                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
3029         param.use_chanctx = data->use_chanctx;
3030         param.regd = data->regd;
3031         param.channels = data->channels;
3032         param.hwname = wiphy_name(data->hw->wiphy);
3033
3034         res = append_radio_msg(skb, data->idx, &param);
3035         if (res < 0)
3036                 goto out_err;
3037
3038         genlmsg_end(skb, hdr);
3039         return 0;
3040
3041 out_err:
3042         genlmsg_cancel(skb, hdr);
3043         return res;
3044 }
3045
3046 static void mac80211_hwsim_free(void)
3047 {
3048         struct mac80211_hwsim_data *data;
3049
3050         spin_lock_bh(&hwsim_radio_lock);
3051         while ((data = list_first_entry_or_null(&hwsim_radios,
3052                                                 struct mac80211_hwsim_data,
3053                                                 list))) {
3054                 list_del(&data->list);
3055                 spin_unlock_bh(&hwsim_radio_lock);
3056                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3057                                          NULL);
3058                 spin_lock_bh(&hwsim_radio_lock);
3059         }
3060         spin_unlock_bh(&hwsim_radio_lock);
3061         class_destroy(hwsim_class);
3062 }
3063
3064 static const struct net_device_ops hwsim_netdev_ops = {
3065         .ndo_start_xmit         = hwsim_mon_xmit,
3066         .ndo_set_mac_address    = eth_mac_addr,
3067         .ndo_validate_addr      = eth_validate_addr,
3068 };
3069
3070 static void hwsim_mon_setup(struct net_device *dev)
3071 {
3072         dev->netdev_ops = &hwsim_netdev_ops;
3073         dev->needs_free_netdev = true;
3074         ether_setup(dev);
3075         dev->priv_flags |= IFF_NO_QUEUE;
3076         dev->type = ARPHRD_IEEE80211_RADIOTAP;
3077         eth_zero_addr(dev->dev_addr);
3078         dev->dev_addr[0] = 0x12;
3079 }
3080
3081 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3082 {
3083         return rhashtable_lookup_fast(&hwsim_radios_rht,
3084                                       addr,
3085                                       hwsim_rht_params);
3086 }
3087
3088 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3089 {
3090         struct mac80211_hwsim_data *data;
3091
3092         hwsim_net_set_wmediumd(net, portid);
3093
3094         spin_lock_bh(&hwsim_radio_lock);
3095         list_for_each_entry(data, &hwsim_radios, list) {
3096                 if (data->netgroup == hwsim_net_get_netgroup(net))
3097                         data->wmediumd = portid;
3098         }
3099         spin_unlock_bh(&hwsim_radio_lock);
3100 }
3101
3102 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3103                                            struct genl_info *info)
3104 {
3105
3106         struct ieee80211_hdr *hdr;
3107         struct mac80211_hwsim_data *data2;
3108         struct ieee80211_tx_info *txi;
3109         struct hwsim_tx_rate *tx_attempts;
3110         u64 ret_skb_cookie;
3111         struct sk_buff *skb, *tmp;
3112         const u8 *src;
3113         unsigned int hwsim_flags;
3114         int i;
3115         bool found = false;
3116
3117         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3118             !info->attrs[HWSIM_ATTR_FLAGS] ||
3119             !info->attrs[HWSIM_ATTR_COOKIE] ||
3120             !info->attrs[HWSIM_ATTR_SIGNAL] ||
3121             !info->attrs[HWSIM_ATTR_TX_INFO])
3122                 goto out;
3123
3124         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3125         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3126         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3127
3128         data2 = get_hwsim_data_ref_from_addr(src);
3129         if (!data2)
3130                 goto out;
3131
3132         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3133                 goto out;
3134
3135         if (info->snd_portid != data2->wmediumd)
3136                 goto out;
3137
3138         /* look for the skb matching the cookie passed back from user */
3139         skb_queue_walk_safe(&data2->pending, skb, tmp) {
3140                 u64 skb_cookie;
3141
3142                 txi = IEEE80211_SKB_CB(skb);
3143                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3144
3145                 if (skb_cookie == ret_skb_cookie) {
3146                         skb_unlink(skb, &data2->pending);
3147                         found = true;
3148                         break;
3149                 }
3150         }
3151
3152         /* not found */
3153         if (!found)
3154                 goto out;
3155
3156         /* Tx info received because the frame was broadcasted on user space,
3157          so we get all the necessary info: tx attempts and skb control buff */
3158
3159         tx_attempts = (struct hwsim_tx_rate *)nla_data(
3160                        info->attrs[HWSIM_ATTR_TX_INFO]);
3161
3162         /* now send back TX status */
3163         txi = IEEE80211_SKB_CB(skb);
3164
3165         ieee80211_tx_info_clear_status(txi);
3166
3167         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3168                 txi->status.rates[i].idx = tx_attempts[i].idx;
3169                 txi->status.rates[i].count = tx_attempts[i].count;
3170         }
3171
3172         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3173
3174         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3175            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3176                 if (skb->len >= 16) {
3177                         hdr = (struct ieee80211_hdr *) skb->data;
3178                         mac80211_hwsim_monitor_ack(data2->channel,
3179                                                    hdr->addr2);
3180                 }
3181                 txi->flags |= IEEE80211_TX_STAT_ACK;
3182         }
3183         ieee80211_tx_status_irqsafe(data2->hw, skb);
3184         return 0;
3185 out:
3186         return -EINVAL;
3187
3188 }
3189
3190 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3191                                           struct genl_info *info)
3192 {
3193         struct mac80211_hwsim_data *data2;
3194         struct ieee80211_rx_status rx_status;
3195         const u8 *dst;
3196         int frame_data_len;
3197         void *frame_data;
3198         struct sk_buff *skb = NULL;
3199
3200         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3201             !info->attrs[HWSIM_ATTR_FRAME] ||
3202             !info->attrs[HWSIM_ATTR_RX_RATE] ||
3203             !info->attrs[HWSIM_ATTR_SIGNAL])
3204                 goto out;
3205
3206         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3207         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3208         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3209
3210         /* Allocate new skb here */
3211         skb = alloc_skb(frame_data_len, GFP_KERNEL);