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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / net / wireless / mac80211_hwsim.c
blob8c35ac838fce2125eafb60f34c3a0701c45ff114
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/platform_device.h>
29 #include <linux/debugfs.h>
30 #include <linux/module.h>
31 #include <linux/ktime.h>
32 #include <net/genetlink.h>
33 #include <net/net_namespace.h>
34 #include <net/netns/generic.h>
35 #include "mac80211_hwsim.h"
36
37 #define WARN_QUEUE 100
38 #define MAX_QUEUE 200
39
40 MODULE_AUTHOR("Jouni Malinen");
41 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
42 MODULE_LICENSE("GPL");
43
44 static int radios = 2;
45 module_param(radios, int, 0444);
46 MODULE_PARM_DESC(radios, "Number of simulated radios");
47
48 static int channels = 1;
49 module_param(channels, int, 0444);
50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
51
52 static bool paged_rx = false;
53 module_param(paged_rx, bool, 0644);
54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
55
56 static bool rctbl = false;
57 module_param(rctbl, bool, 0444);
58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
59
60 static bool support_p2p_device = true;
61 module_param(support_p2p_device, bool, 0444);
62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
63
64 /**
65 * enum hwsim_regtest - the type of regulatory tests we offer
66 *
67 * These are the different values you can use for the regtest
68 * module parameter. This is useful to help test world roaming
69 * and the driver regulatory_hint() call and combinations of these.
70 * If you want to do specific alpha2 regulatory domain tests simply
71 * use the userspace regulatory request as that will be respected as
72 * well without the need of this module parameter. This is designed
73 * only for testing the driver regulatory request, world roaming
74 * and all possible combinations.
75 *
76 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
77 * this is the default value.
78 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
79 * hint, only one driver regulatory hint will be sent as such the
80 * secondary radios are expected to follow.
81 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
82 * request with all radios reporting the same regulatory domain.
83 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
84 * different regulatory domains requests. Expected behaviour is for
85 * an intersection to occur but each device will still use their
86 * respective regulatory requested domains. Subsequent radios will
87 * use the resulting intersection.
88 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
89 * this by using a custom beacon-capable regulatory domain for the first
90 * radio. All other device world roam.
91 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
92 * domain requests. All radios will adhere to this custom world regulatory
93 * domain.
94 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
95 * domain requests. The first radio will adhere to the first custom world
96 * regulatory domain, the second one to the second custom world regulatory
97 * domain. All other devices will world roam.
98 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
99 * settings, only the first radio will send a regulatory domain request
100 * and use strict settings. The rest of the radios are expected to follow.
101 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
102 * settings. All radios will adhere to this.
103 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
104 * domain settings, combined with secondary driver regulatory domain
105 * settings. The first radio will get a strict regulatory domain setting
106 * using the first driver regulatory request and the second radio will use
107 * non-strict settings using the second driver regulatory request. All
108 * other devices should follow the intersection created between the
109 * first two.
110 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
111 * at least 6 radios for a complete test. We will test in this order:
112 * 1 - driver custom world regulatory domain
113 * 2 - second custom world regulatory domain
114 * 3 - first driver regulatory domain request
115 * 4 - second driver regulatory domain request
116 * 5 - strict regulatory domain settings using the third driver regulatory
117 * domain request
118 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
119 * regulatory requests.
120 */
121 enum hwsim_regtest {
122 HWSIM_REGTEST_DISABLED = 0,
123 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
124 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
125 HWSIM_REGTEST_DIFF_COUNTRY = 3,
126 HWSIM_REGTEST_WORLD_ROAM = 4,
127 HWSIM_REGTEST_CUSTOM_WORLD = 5,
128 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
129 HWSIM_REGTEST_STRICT_FOLLOW = 7,
130 HWSIM_REGTEST_STRICT_ALL = 8,
131 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
132 HWSIM_REGTEST_ALL = 10,
133 };
134
135 /* Set to one of the HWSIM_REGTEST_* values above */
136 static int regtest = HWSIM_REGTEST_DISABLED;
137 module_param(regtest, int, 0444);
138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
139
140 static const char *hwsim_alpha2s[] = {
141 "FI",
142 "AL",
143 "US",
144 "DE",
145 "JP",
146 "AL",
147 };
148
149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
150 .n_reg_rules = 4,
151 .alpha2 = "99",
152 .reg_rules = {
153 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
154 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
155 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
156 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
157 }
158 };
159
160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
161 .n_reg_rules = 2,
162 .alpha2 = "99",
163 .reg_rules = {
164 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
165 REG_RULE(5725-10, 5850+10, 40, 0, 30,
166 NL80211_RRF_NO_IR),
167 }
168 };
169
170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
171 &hwsim_world_regdom_custom_01,
172 &hwsim_world_regdom_custom_02,
173 };
174
175 struct hwsim_vif_priv {
176 u32 magic;
177 u8 bssid[ETH_ALEN];
178 bool assoc;
179 bool bcn_en;
180 u16 aid;
181 };
182
183 #define HWSIM_VIF_MAGIC 0x69537748
184
185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
186 {
187 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
188 WARN(vp->magic != HWSIM_VIF_MAGIC,
189 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
190 vif, vp->magic, vif->addr, vif->type, vif->p2p);
191 }
192
193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
194 {
195 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
196 vp->magic = HWSIM_VIF_MAGIC;
197 }
198
199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
200 {
201 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
202 vp->magic = 0;
203 }
204
205 struct hwsim_sta_priv {
206 u32 magic;
207 };
208
209 #define HWSIM_STA_MAGIC 0x6d537749
210
211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
212 {
213 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
214 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
215 }
216
217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
218 {
219 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
220 sp->magic = HWSIM_STA_MAGIC;
221 }
222
223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
224 {
225 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
226 sp->magic = 0;
227 }
228
229 struct hwsim_chanctx_priv {
230 u32 magic;
231 };
232
233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
234
235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
236 {
237 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
238 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
239 }
240
241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
242 {
243 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
244 cp->magic = HWSIM_CHANCTX_MAGIC;
245 }
246
247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
248 {
249 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
250 cp->magic = 0;
251 }
252
253 static int hwsim_net_id;
254
255 static int hwsim_netgroup;
256
257 struct hwsim_net {
258 int netgroup;
259 u32 wmediumd;
260 };
261
262 static inline int hwsim_net_get_netgroup(struct net *net)
263 {
264 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
265
266 return hwsim_net->netgroup;
267 }
268
269 static inline void hwsim_net_set_netgroup(struct net *net)
270 {
271 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
272
273 hwsim_net->netgroup = hwsim_netgroup++;
274 }
275
276 static inline u32 hwsim_net_get_wmediumd(struct net *net)
277 {
278 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
279
280 return hwsim_net->wmediumd;
281 }
282
283 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
284 {
285 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
286
287 hwsim_net->wmediumd = portid;
288 }
289
290 static struct class *hwsim_class;
291
292 static struct net_device *hwsim_mon; /* global monitor netdev */
293
294 #define CHAN2G(_freq) { \
295 .band = NL80211_BAND_2GHZ, \
296 .center_freq = (_freq), \
297 .hw_value = (_freq), \
298 .max_power = 20, \
299 }
300
301 #define CHAN5G(_freq) { \
302 .band = NL80211_BAND_5GHZ, \
303 .center_freq = (_freq), \
304 .hw_value = (_freq), \
305 .max_power = 20, \
306 }
307
308 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
309 CHAN2G(2412), /* Channel 1 */
310 CHAN2G(2417), /* Channel 2 */
311 CHAN2G(2422), /* Channel 3 */
312 CHAN2G(2427), /* Channel 4 */
313 CHAN2G(2432), /* Channel 5 */
314 CHAN2G(2437), /* Channel 6 */
315 CHAN2G(2442), /* Channel 7 */
316 CHAN2G(2447), /* Channel 8 */
317 CHAN2G(2452), /* Channel 9 */
318 CHAN2G(2457), /* Channel 10 */
319 CHAN2G(2462), /* Channel 11 */
320 CHAN2G(2467), /* Channel 12 */
321 CHAN2G(2472), /* Channel 13 */
322 CHAN2G(2484), /* Channel 14 */
323 };
324
325 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
326 CHAN5G(5180), /* Channel 36 */
327 CHAN5G(5200), /* Channel 40 */
328 CHAN5G(5220), /* Channel 44 */
329 CHAN5G(5240), /* Channel 48 */
330
331 CHAN5G(5260), /* Channel 52 */
332 CHAN5G(5280), /* Channel 56 */
333 CHAN5G(5300), /* Channel 60 */
334 CHAN5G(5320), /* Channel 64 */
335
336 CHAN5G(5500), /* Channel 100 */
337 CHAN5G(5520), /* Channel 104 */
338 CHAN5G(5540), /* Channel 108 */
339 CHAN5G(5560), /* Channel 112 */
340 CHAN5G(5580), /* Channel 116 */
341 CHAN5G(5600), /* Channel 120 */
342 CHAN5G(5620), /* Channel 124 */
343 CHAN5G(5640), /* Channel 128 */
344 CHAN5G(5660), /* Channel 132 */
345 CHAN5G(5680), /* Channel 136 */
346 CHAN5G(5700), /* Channel 140 */
347
348 CHAN5G(5745), /* Channel 149 */
349 CHAN5G(5765), /* Channel 153 */
350 CHAN5G(5785), /* Channel 157 */
351 CHAN5G(5805), /* Channel 161 */
352 CHAN5G(5825), /* Channel 165 */
353 };
354
355 static const struct ieee80211_rate hwsim_rates[] = {
356 { .bitrate = 10 },
357 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
358 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
359 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
360 { .bitrate = 60 },
361 { .bitrate = 90 },
362 { .bitrate = 120 },
363 { .bitrate = 180 },
364 { .bitrate = 240 },
365 { .bitrate = 360 },
366 { .bitrate = 480 },
367 { .bitrate = 540 }
368 };
369
370 #define OUI_QCA 0x001374
371 #define QCA_NL80211_SUBCMD_TEST 1
372 enum qca_nl80211_vendor_subcmds {
373 QCA_WLAN_VENDOR_ATTR_TEST = 8,
374 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
375 };
376
377 static const struct nla_policy
378 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
379 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
380 };
381
382 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
383 struct wireless_dev *wdev,
384 const void *data, int data_len)
385 {
386 struct sk_buff *skb;
387 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
388 int err;
389 u32 val;
390
391 err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
392 hwsim_vendor_test_policy);
393 if (err)
394 return err;
395 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
396 return -EINVAL;
397 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
398 wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
399
400 /* Send a vendor event as a test. Note that this would not normally be
401 * done within a command handler, but rather, based on some other
402 * trigger. For simplicity, this command is used to trigger the event
403 * here.
404 *
405 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
406 */
407 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
408 if (skb) {
409 /* skb_put() or nla_put() will fill up data within
410 * NL80211_ATTR_VENDOR_DATA.
411 */
412
413 /* Add vendor data */
414 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
415
416 /* Send the event - this will call nla_nest_end() */
417 cfg80211_vendor_event(skb, GFP_KERNEL);
418 }
419
420 /* Send a response to the command */
421 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
422 if (!skb)
423 return -ENOMEM;
424
425 /* skb_put() or nla_put() will fill up data within
426 * NL80211_ATTR_VENDOR_DATA
427 */
428 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
429
430 return cfg80211_vendor_cmd_reply(skb);
431 }
432
433 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
434 {
435 .info = { .vendor_id = OUI_QCA,
436 .subcmd = QCA_NL80211_SUBCMD_TEST },
437 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
438 .doit = mac80211_hwsim_vendor_cmd_test,
439 }
440 };
441
442 /* Advertise support vendor specific events */
443 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
444 { .vendor_id = OUI_QCA, .subcmd = 1 },
445 };
446
447 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
448 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
449 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
450 BIT(NL80211_IFTYPE_P2P_CLIENT) |
451 #ifdef CONFIG_MAC80211_MESH
452 BIT(NL80211_IFTYPE_MESH_POINT) |
453 #endif
454 BIT(NL80211_IFTYPE_AP) |
455 BIT(NL80211_IFTYPE_P2P_GO) },
456 /* must be last, see hwsim_if_comb */
457 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
458 };
459
460 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
461 {
462 .limits = hwsim_if_limits,
463 /* remove the last entry which is P2P_DEVICE */
464 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
465 .max_interfaces = 2048,
466 .num_different_channels = 1,
467 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
468 BIT(NL80211_CHAN_WIDTH_20) |
469 BIT(NL80211_CHAN_WIDTH_40) |
470 BIT(NL80211_CHAN_WIDTH_80) |
471 BIT(NL80211_CHAN_WIDTH_160),
472 },
473 };
474
475 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
476 {
477 .limits = hwsim_if_limits,
478 .n_limits = ARRAY_SIZE(hwsim_if_limits),
479 .max_interfaces = 2048,
480 .num_different_channels = 1,
481 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
482 BIT(NL80211_CHAN_WIDTH_20) |
483 BIT(NL80211_CHAN_WIDTH_40) |
484 BIT(NL80211_CHAN_WIDTH_80) |
485 BIT(NL80211_CHAN_WIDTH_160),
486 },
487 };
488
489 static spinlock_t hwsim_radio_lock;
490 static struct list_head hwsim_radios;
491 static int hwsim_radio_idx;
492
493 static struct platform_driver mac80211_hwsim_driver = {
494 .driver = {
495 .name = "mac80211_hwsim",
496 },
497 };
498
499 struct mac80211_hwsim_data {
500 struct list_head list;
501 struct ieee80211_hw *hw;
502 struct device *dev;
503 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
504 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
505 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
506 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
507 struct ieee80211_iface_combination if_combination;
508
509 struct mac_address addresses[2];
510 int channels, idx;
511 bool use_chanctx;
512 bool destroy_on_close;
513 struct work_struct destroy_work;
514 u32 portid;
515 char alpha2[2];
516 const struct ieee80211_regdomain *regd;
517
518 struct ieee80211_channel *tmp_chan;
519 struct ieee80211_channel *roc_chan;
520 u32 roc_duration;
521 struct delayed_work roc_start;
522 struct delayed_work roc_done;
523 struct delayed_work hw_scan;
524 struct cfg80211_scan_request *hw_scan_request;
525 struct ieee80211_vif *hw_scan_vif;
526 int scan_chan_idx;
527 u8 scan_addr[ETH_ALEN];
528
529 struct ieee80211_channel *channel;
530 u64 beacon_int /* beacon interval in us */;
531 unsigned int rx_filter;
532 bool started, idle, scanning;
533 struct mutex mutex;
534 struct tasklet_hrtimer beacon_timer;
535 enum ps_mode {
536 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
537 } ps;
538 bool ps_poll_pending;
539 struct dentry *debugfs;
540
541 uintptr_t pending_cookie;
542 struct sk_buff_head pending; /* packets pending */
543 /*
544 * Only radios in the same group can communicate together (the
545 * channel has to match too). Each bit represents a group. A
546 * radio can be in more than one group.
547 */
548 u64 group;
549
550 /* group shared by radios created in the same netns */
551 int netgroup;
552 /* wmediumd portid responsible for netgroup of this radio */
553 u32 wmediumd;
554
555 int power_level;
556
557 /* difference between this hw's clock and the real clock, in usecs */
558 s64 tsf_offset;
559 s64 bcn_delta;
560 /* absolute beacon transmission time. Used to cover up "tx" delay. */
561 u64 abs_bcn_ts;
562
563 /* Stats */
564 u64 tx_pkts;
565 u64 rx_pkts;
566 u64 tx_bytes;
567 u64 rx_bytes;
568 u64 tx_dropped;
569 u64 tx_failed;
570 };
571
572
573 struct hwsim_radiotap_hdr {
574 struct ieee80211_radiotap_header hdr;
575 __le64 rt_tsft;
576 u8 rt_flags;
577 u8 rt_rate;
578 __le16 rt_channel;
579 __le16 rt_chbitmask;
580 } __packed;
581
582 struct hwsim_radiotap_ack_hdr {
583 struct ieee80211_radiotap_header hdr;
584 u8 rt_flags;
585 u8 pad;
586 __le16 rt_channel;
587 __le16 rt_chbitmask;
588 } __packed;
589
590 /* MAC80211_HWSIM netlinf family */
591 static struct genl_family hwsim_genl_family = {
592 .id = GENL_ID_GENERATE,
593 .hdrsize = 0,
594 .name = "MAC80211_HWSIM",
595 .version = 1,
596 .maxattr = HWSIM_ATTR_MAX,
597 .netnsok = true,
598 };
599
600 enum hwsim_multicast_groups {
601 HWSIM_MCGRP_CONFIG,
602 };
603
604 static const struct genl_multicast_group hwsim_mcgrps[] = {
605 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
606 };
607
608 /* MAC80211_HWSIM netlink policy */
609
610 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
611 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
612 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
613 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
614 .len = IEEE80211_MAX_DATA_LEN },
615 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
616 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
617 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
618 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
619 .len = IEEE80211_TX_MAX_RATES *
620 sizeof(struct hwsim_tx_rate)},
621 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
622 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
623 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
624 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
625 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
626 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
627 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
628 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
629 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
630 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
631 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
632 };
633
634 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
635 struct sk_buff *skb,
636 struct ieee80211_channel *chan);
637
638 /* sysfs attributes */
639 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
640 {
641 struct mac80211_hwsim_data *data = dat;
642 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
643 struct sk_buff *skb;
644 struct ieee80211_pspoll *pspoll;
645
646 if (!vp->assoc)
647 return;
648
649 wiphy_debug(data->hw->wiphy,
650 "%s: send PS-Poll to %pM for aid %d\n",
651 __func__, vp->bssid, vp->aid);
652
653 skb = dev_alloc_skb(sizeof(*pspoll));
654 if (!skb)
655 return;
656 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
657 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
658 IEEE80211_STYPE_PSPOLL |
659 IEEE80211_FCTL_PM);
660 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
661 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
662 memcpy(pspoll->ta, mac, ETH_ALEN);
663
664 rcu_read_lock();
665 mac80211_hwsim_tx_frame(data->hw, skb,
666 rcu_dereference(vif->chanctx_conf)->def.chan);
667 rcu_read_unlock();
668 }
669
670 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
671 struct ieee80211_vif *vif, int ps)
672 {
673 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
674 struct sk_buff *skb;
675 struct ieee80211_hdr *hdr;
676
677 if (!vp->assoc)
678 return;
679
680 wiphy_debug(data->hw->wiphy,
681 "%s: send data::nullfunc to %pM ps=%d\n",
682 __func__, vp->bssid, ps);
683
684 skb = dev_alloc_skb(sizeof(*hdr));
685 if (!skb)
686 return;
687 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
688 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
689 IEEE80211_STYPE_NULLFUNC |
690 (ps ? IEEE80211_FCTL_PM : 0));
691 hdr->duration_id = cpu_to_le16(0);
692 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
693 memcpy(hdr->addr2, mac, ETH_ALEN);
694 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
695
696 rcu_read_lock();
697 mac80211_hwsim_tx_frame(data->hw, skb,
698 rcu_dereference(vif->chanctx_conf)->def.chan);
699 rcu_read_unlock();
700 }
701
702
703 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
704 struct ieee80211_vif *vif)
705 {
706 struct mac80211_hwsim_data *data = dat;
707 hwsim_send_nullfunc(data, mac, vif, 1);
708 }
709
710 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
711 struct ieee80211_vif *vif)
712 {
713 struct mac80211_hwsim_data *data = dat;
714 hwsim_send_nullfunc(data, mac, vif, 0);
715 }
716
717 static int hwsim_fops_ps_read(void *dat, u64 *val)
718 {
719 struct mac80211_hwsim_data *data = dat;
720 *val = data->ps;
721 return 0;
722 }
723
724 static int hwsim_fops_ps_write(void *dat, u64 val)
725 {
726 struct mac80211_hwsim_data *data = dat;
727 enum ps_mode old_ps;
728
729 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
730 val != PS_MANUAL_POLL)
731 return -EINVAL;
732
733 old_ps = data->ps;
734 data->ps = val;
735
736 local_bh_disable();
737 if (val == PS_MANUAL_POLL) {
738 ieee80211_iterate_active_interfaces_atomic(
739 data->hw, IEEE80211_IFACE_ITER_NORMAL,
740 hwsim_send_ps_poll, data);
741 data->ps_poll_pending = true;
742 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
743 ieee80211_iterate_active_interfaces_atomic(
744 data->hw, IEEE80211_IFACE_ITER_NORMAL,
745 hwsim_send_nullfunc_ps, data);
746 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
747 ieee80211_iterate_active_interfaces_atomic(
748 data->hw, IEEE80211_IFACE_ITER_NORMAL,
749 hwsim_send_nullfunc_no_ps, data);
750 }
751 local_bh_enable();
752
753 return 0;
754 }
755
756 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
757 "%llu\n");
758
759 static int hwsim_write_simulate_radar(void *dat, u64 val)
760 {
761 struct mac80211_hwsim_data *data = dat;
762
763 ieee80211_radar_detected(data->hw);
764
765 return 0;
766 }
767
768 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
769 hwsim_write_simulate_radar, "%llu\n");
770
771 static int hwsim_fops_group_read(void *dat, u64 *val)
772 {
773 struct mac80211_hwsim_data *data = dat;
774 *val = data->group;
775 return 0;
776 }
777
778 static int hwsim_fops_group_write(void *dat, u64 val)
779 {
780 struct mac80211_hwsim_data *data = dat;
781 data->group = val;
782 return 0;
783 }
784
785 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
786 hwsim_fops_group_read, hwsim_fops_group_write,
787 "%llx\n");
788
789 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
790 struct net_device *dev)
791 {
792 /* TODO: allow packet injection */
793 dev_kfree_skb(skb);
794 return NETDEV_TX_OK;
795 }
796
797 static inline u64 mac80211_hwsim_get_tsf_raw(void)
798 {
799 return ktime_to_us(ktime_get_real());
800 }
801
802 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
803 {
804 u64 now = mac80211_hwsim_get_tsf_raw();
805 return cpu_to_le64(now + data->tsf_offset);
806 }
807
808 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
809 struct ieee80211_vif *vif)
810 {
811 struct mac80211_hwsim_data *data = hw->priv;
812 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
813 }
814
815 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
816 struct ieee80211_vif *vif, u64 tsf)
817 {
818 struct mac80211_hwsim_data *data = hw->priv;
819 u64 now = mac80211_hwsim_get_tsf(hw, vif);
820 u32 bcn_int = data->beacon_int;
821 u64 delta = abs(tsf - now);
822
823 /* adjust after beaconing with new timestamp at old TBTT */
824 if (tsf > now) {
825 data->tsf_offset += delta;
826 data->bcn_delta = do_div(delta, bcn_int);
827 } else {
828 data->tsf_offset -= delta;
829 data->bcn_delta = -do_div(delta, bcn_int);
830 }
831 }
832
833 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
834 struct sk_buff *tx_skb,
835 struct ieee80211_channel *chan)
836 {
837 struct mac80211_hwsim_data *data = hw->priv;
838 struct sk_buff *skb;
839 struct hwsim_radiotap_hdr *hdr;
840 u16 flags;
841 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
842 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
843
844 if (WARN_ON(!txrate))
845 return;
846
847 if (!netif_running(hwsim_mon))
848 return;
849
850 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
851 if (skb == NULL)
852 return;
853
854 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
855 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
856 hdr->hdr.it_pad = 0;
857 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
858 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
859 (1 << IEEE80211_RADIOTAP_RATE) |
860 (1 << IEEE80211_RADIOTAP_TSFT) |
861 (1 << IEEE80211_RADIOTAP_CHANNEL));
862 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
863 hdr->rt_flags = 0;
864 hdr->rt_rate = txrate->bitrate / 5;
865 hdr->rt_channel = cpu_to_le16(chan->center_freq);
866 flags = IEEE80211_CHAN_2GHZ;
867 if (txrate->flags & IEEE80211_RATE_ERP_G)
868 flags |= IEEE80211_CHAN_OFDM;
869 else
870 flags |= IEEE80211_CHAN_CCK;
871 hdr->rt_chbitmask = cpu_to_le16(flags);
872
873 skb->dev = hwsim_mon;
874 skb_reset_mac_header(skb);
875 skb->ip_summed = CHECKSUM_UNNECESSARY;
876 skb->pkt_type = PACKET_OTHERHOST;
877 skb->protocol = htons(ETH_P_802_2);
878 memset(skb->cb, 0, sizeof(skb->cb));
879 netif_rx(skb);
880 }
881
882
883 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
884 const u8 *addr)
885 {
886 struct sk_buff *skb;
887 struct hwsim_radiotap_ack_hdr *hdr;
888 u16 flags;
889 struct ieee80211_hdr *hdr11;
890
891 if (!netif_running(hwsim_mon))
892 return;
893
894 skb = dev_alloc_skb(100);
895 if (skb == NULL)
896 return;
897
898 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
899 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
900 hdr->hdr.it_pad = 0;
901 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
902 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
903 (1 << IEEE80211_RADIOTAP_CHANNEL));
904 hdr->rt_flags = 0;
905 hdr->pad = 0;
906 hdr->rt_channel = cpu_to_le16(chan->center_freq);
907 flags = IEEE80211_CHAN_2GHZ;
908 hdr->rt_chbitmask = cpu_to_le16(flags);
909
910 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
911 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
912 IEEE80211_STYPE_ACK);
913 hdr11->duration_id = cpu_to_le16(0);
914 memcpy(hdr11->addr1, addr, ETH_ALEN);
915
916 skb->dev = hwsim_mon;
917 skb_reset_mac_header(skb);
918 skb->ip_summed = CHECKSUM_UNNECESSARY;
919 skb->pkt_type = PACKET_OTHERHOST;
920 skb->protocol = htons(ETH_P_802_2);
921 memset(skb->cb, 0, sizeof(skb->cb));
922 netif_rx(skb);
923 }
924
925 struct mac80211_hwsim_addr_match_data {
926 u8 addr[ETH_ALEN];
927 bool ret;
928 };
929
930 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
931 struct ieee80211_vif *vif)
932 {
933 struct mac80211_hwsim_addr_match_data *md = data;
934
935 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
936 md->ret = true;
937 }
938
939 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
940 const u8 *addr)
941 {
942 struct mac80211_hwsim_addr_match_data md = {
943 .ret = false,
944 };
945
946 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
947 return true;
948
949 memcpy(md.addr, addr, ETH_ALEN);
950
951 ieee80211_iterate_active_interfaces_atomic(data->hw,
952 IEEE80211_IFACE_ITER_NORMAL,
953 mac80211_hwsim_addr_iter,
954 &md);
955
956 return md.ret;
957 }
958
959 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
960 struct sk_buff *skb)
961 {
962 switch (data->ps) {
963 case PS_DISABLED:
964 return true;
965 case PS_ENABLED:
966 return false;
967 case PS_AUTO_POLL:
968 /* TODO: accept (some) Beacons by default and other frames only
969 * if pending PS-Poll has been sent */
970 return true;
971 case PS_MANUAL_POLL:
972 /* Allow unicast frames to own address if there is a pending
973 * PS-Poll */
974 if (data->ps_poll_pending &&
975 mac80211_hwsim_addr_match(data, skb->data + 4)) {
976 data->ps_poll_pending = false;
977 return true;
978 }
979 return false;
980 }
981
982 return true;
983 }
984
985 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
986 struct sk_buff *skb, int portid)
987 {
988 struct net *net;
989 bool found = false;
990 int res = -ENOENT;
991
992 rcu_read_lock();
993 for_each_net_rcu(net) {
994 if (data->netgroup == hwsim_net_get_netgroup(net)) {
995 res = genlmsg_unicast(net, skb, portid);
996 found = true;
997 break;
998 }
999 }
1000 rcu_read_unlock();
1001
1002 if (!found)
1003 nlmsg_free(skb);
1004
1005 return res;
1006 }
1007
1008 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1009 struct sk_buff *my_skb,
1010 int dst_portid)
1011 {
1012 struct sk_buff *skb;
1013 struct mac80211_hwsim_data *data = hw->priv;
1014 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1015 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1016 void *msg_head;
1017 unsigned int hwsim_flags = 0;
1018 int i;
1019 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1020 uintptr_t cookie;
1021
1022 if (data->ps != PS_DISABLED)
1023 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1024 /* If the queue contains MAX_QUEUE skb's drop some */
1025 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1026 /* Droping until WARN_QUEUE level */
1027 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1028 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1029 data->tx_dropped++;
1030 }
1031 }
1032
1033 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1034 if (skb == NULL)
1035 goto nla_put_failure;
1036
1037 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1038 HWSIM_CMD_FRAME);
1039 if (msg_head == NULL) {
1040 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1041 goto nla_put_failure;
1042 }
1043
1044 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1045 ETH_ALEN, data->addresses[1].addr))
1046 goto nla_put_failure;
1047
1048 /* We get the skb->data */
1049 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1050 goto nla_put_failure;
1051
1052 /* We get the flags for this transmission, and we translate them to
1053 wmediumd flags */
1054
1055 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1056 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1057
1058 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1059 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1060
1061 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1062 goto nla_put_failure;
1063
1064 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1065 goto nla_put_failure;
1066
1067 /* We get the tx control (rate and retries) info*/
1068
1069 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1070 tx_attempts[i].idx = info->status.rates[i].idx;
1071 tx_attempts[i].count = info->status.rates[i].count;
1072 }
1073
1074 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1075 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1076 tx_attempts))
1077 goto nla_put_failure;
1078
1079 /* We create a cookie to identify this skb */
1080 data->pending_cookie++;
1081 cookie = data->pending_cookie;
1082 info->rate_driver_data[0] = (void *)cookie;
1083 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1084 goto nla_put_failure;
1085
1086 genlmsg_end(skb, msg_head);
1087 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1088 goto err_free_txskb;
1089
1090 /* Enqueue the packet */
1091 skb_queue_tail(&data->pending, my_skb);
1092 data->tx_pkts++;
1093 data->tx_bytes += my_skb->len;
1094 return;
1095
1096 nla_put_failure:
1097 nlmsg_free(skb);
1098 err_free_txskb:
1099 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1100 ieee80211_free_txskb(hw, my_skb);
1101 data->tx_failed++;
1102 }
1103
1104 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1105 struct ieee80211_channel *c2)
1106 {
1107 if (!c1 || !c2)
1108 return false;
1109
1110 return c1->center_freq == c2->center_freq;
1111 }
1112
1113 struct tx_iter_data {
1114 struct ieee80211_channel *channel;
1115 bool receive;
1116 };
1117
1118 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1119 struct ieee80211_vif *vif)
1120 {
1121 struct tx_iter_data *data = _data;
1122
1123 if (!vif->chanctx_conf)
1124 return;
1125
1126 if (!hwsim_chans_compat(data->channel,
1127 rcu_dereference(vif->chanctx_conf)->def.chan))
1128 return;
1129
1130 data->receive = true;
1131 }
1132
1133 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1134 {
1135 /*
1136 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1137 * e.g. like this:
1138 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1139 * (but you should use a valid OUI, not that)
1140 *
1141 * If anyone wants to 'donate' a radiotap OUI/subns code
1142 * please send a patch removing this #ifdef and changing
1143 * the values accordingly.
1144 */
1145 #ifdef HWSIM_RADIOTAP_OUI
1146 struct ieee80211_vendor_radiotap *rtap;
1147
1148 /*
1149 * Note that this code requires the headroom in the SKB
1150 * that was allocated earlier.
1151 */
1152 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1153 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1154 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1155 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1156 rtap->subns = 127;
1157
1158 /*
1159 * Radiotap vendor namespaces can (and should) also be
1160 * split into fields by using the standard radiotap
1161 * presence bitmap mechanism. Use just BIT(0) here for
1162 * the presence bitmap.
1163 */
1164 rtap->present = BIT(0);
1165 /* We have 8 bytes of (dummy) data */
1166 rtap->len = 8;
1167 /* For testing, also require it to be aligned */
1168 rtap->align = 8;
1169 /* And also test that padding works, 4 bytes */
1170 rtap->pad = 4;
1171 /* push the data */
1172 memcpy(rtap->data, "ABCDEFGH", 8);
1173 /* make sure to clear padding, mac80211 doesn't */
1174 memset(rtap->data + 8, 0, 4);
1175
1176 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1177 #endif
1178 }
1179
1180 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1181 struct sk_buff *skb,
1182 struct ieee80211_channel *chan)
1183 {
1184 struct mac80211_hwsim_data *data = hw->priv, *data2;
1185 bool ack = false;
1186 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1187 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1188 struct ieee80211_rx_status rx_status;
1189 u64 now;
1190
1191 memset(&rx_status, 0, sizeof(rx_status));
1192 rx_status.flag |= RX_FLAG_MACTIME_START;
1193 rx_status.freq = chan->center_freq;
1194 rx_status.band = chan->band;
1195 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1196 rx_status.rate_idx =
1197 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1198 rx_status.vht_nss =
1199 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1200 rx_status.flag |= RX_FLAG_VHT;
1201 } else {
1202 rx_status.rate_idx = info->control.rates[0].idx;
1203 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1204 rx_status.flag |= RX_FLAG_HT;
1205 }
1206 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1207 rx_status.flag |= RX_FLAG_40MHZ;
1208 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1209 rx_status.flag |= RX_FLAG_SHORT_GI;
1210 /* TODO: simulate real signal strength (and optional packet loss) */
1211 rx_status.signal = data->power_level - 50;
1212
1213 if (data->ps != PS_DISABLED)
1214 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1215
1216 /* release the skb's source info */
1217 skb_orphan(skb);
1218 skb_dst_drop(skb);
1219 skb->mark = 0;
1220 secpath_reset(skb);
1221 nf_reset(skb);
1222
1223 /*
1224 * Get absolute mactime here so all HWs RX at the "same time", and
1225 * absolute TX time for beacon mactime so the timestamp matches.
1226 * Giving beacons a different mactime than non-beacons looks messy, but
1227 * it helps the Toffset be exact and a ~10us mactime discrepancy
1228 * probably doesn't really matter.
1229 */
1230 if (ieee80211_is_beacon(hdr->frame_control) ||
1231 ieee80211_is_probe_resp(hdr->frame_control))
1232 now = data->abs_bcn_ts;
1233 else
1234 now = mac80211_hwsim_get_tsf_raw();
1235
1236 /* Copy skb to all enabled radios that are on the current frequency */
1237 spin_lock(&hwsim_radio_lock);
1238 list_for_each_entry(data2, &hwsim_radios, list) {
1239 struct sk_buff *nskb;
1240 struct tx_iter_data tx_iter_data = {
1241 .receive = false,
1242 .channel = chan,
1243 };
1244
1245 if (data == data2)
1246 continue;
1247
1248 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1249 !hwsim_ps_rx_ok(data2, skb))
1250 continue;
1251
1252 if (!(data->group & data2->group))
1253 continue;
1254
1255 if (data->netgroup != data2->netgroup)
1256 continue;
1257
1258 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1259 !hwsim_chans_compat(chan, data2->channel)) {
1260 ieee80211_iterate_active_interfaces_atomic(
1261 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1262 mac80211_hwsim_tx_iter, &tx_iter_data);
1263 if (!tx_iter_data.receive)
1264 continue;
1265 }
1266
1267 /*
1268 * reserve some space for our vendor and the normal
1269 * radiotap header, since we're copying anyway
1270 */
1271 if (skb->len < PAGE_SIZE && paged_rx) {
1272 struct page *page = alloc_page(GFP_ATOMIC);
1273
1274 if (!page)
1275 continue;
1276
1277 nskb = dev_alloc_skb(128);
1278 if (!nskb) {
1279 __free_page(page);
1280 continue;
1281 }
1282
1283 memcpy(page_address(page), skb->data, skb->len);
1284 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1285 } else {
1286 nskb = skb_copy(skb, GFP_ATOMIC);
1287 if (!nskb)
1288 continue;
1289 }
1290
1291 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1292 ack = true;
1293
1294 rx_status.mactime = now + data2->tsf_offset;
1295
1296 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1297
1298 mac80211_hwsim_add_vendor_rtap(nskb);
1299
1300 data2->rx_pkts++;
1301 data2->rx_bytes += nskb->len;
1302 ieee80211_rx_irqsafe(data2->hw, nskb);
1303 }
1304 spin_unlock(&hwsim_radio_lock);
1305
1306 return ack;
1307 }
1308
1309 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1310 struct ieee80211_tx_control *control,
1311 struct sk_buff *skb)
1312 {
1313 struct mac80211_hwsim_data *data = hw->priv;
1314 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1315 struct ieee80211_hdr *hdr = (void *)skb->data;
1316 struct ieee80211_chanctx_conf *chanctx_conf;
1317 struct ieee80211_channel *channel;
1318 bool ack;
1319 u32 _portid;
1320
1321 if (WARN_ON(skb->len < 10)) {
1322 /* Should not happen; just a sanity check for addr1 use */
1323 ieee80211_free_txskb(hw, skb);
1324 return;
1325 }
1326
1327 if (!data->use_chanctx) {
1328 channel = data->channel;
1329 } else if (txi->hw_queue == 4) {
1330 channel = data->tmp_chan;
1331 } else {
1332 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1333 if (chanctx_conf)
1334 channel = chanctx_conf->def.chan;
1335 else
1336 channel = NULL;
1337 }
1338
1339 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1340 ieee80211_free_txskb(hw, skb);
1341 return;
1342 }
1343
1344 if (data->idle && !data->tmp_chan) {
1345 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1346 ieee80211_free_txskb(hw, skb);
1347 return;
1348 }
1349
1350 if (txi->control.vif)
1351 hwsim_check_magic(txi->control.vif);
1352 if (control->sta)
1353 hwsim_check_sta_magic(control->sta);
1354
1355 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1356 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1357 txi->control.rates,
1358 ARRAY_SIZE(txi->control.rates));
1359
1360 txi->rate_driver_data[0] = channel;
1361
1362 if (skb->len >= 24 + 8 &&
1363 ieee80211_is_probe_resp(hdr->frame_control)) {
1364 /* fake header transmission time */
1365 struct ieee80211_mgmt *mgmt;
1366 struct ieee80211_rate *txrate;
1367 u64 ts;
1368
1369 mgmt = (struct ieee80211_mgmt *)skb->data;
1370 txrate = ieee80211_get_tx_rate(hw, txi);
1371 ts = mac80211_hwsim_get_tsf_raw();
1372 mgmt->u.probe_resp.timestamp =
1373 cpu_to_le64(ts + data->tsf_offset +
1374 24 * 8 * 10 / txrate->bitrate);
1375 }
1376
1377 mac80211_hwsim_monitor_rx(hw, skb, channel);
1378
1379 /* wmediumd mode check */
1380 _portid = ACCESS_ONCE(data->wmediumd);
1381
1382 if (_portid)
1383 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1384
1385 /* NO wmediumd detected, perfect medium simulation */
1386 data->tx_pkts++;
1387 data->tx_bytes += skb->len;
1388 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1389
1390 if (ack && skb->len >= 16)
1391 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1392
1393 ieee80211_tx_info_clear_status(txi);
1394
1395 /* frame was transmitted at most favorable rate at first attempt */
1396 txi->control.rates[0].count = 1;
1397 txi->control.rates[1].idx = -1;
1398
1399 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1400 txi->flags |= IEEE80211_TX_STAT_ACK;
1401 ieee80211_tx_status_irqsafe(hw, skb);
1402 }
1403
1404
1405 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1406 {
1407 struct mac80211_hwsim_data *data = hw->priv;
1408 wiphy_debug(hw->wiphy, "%s\n", __func__);
1409 data->started = true;
1410 return 0;
1411 }
1412
1413
1414 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1415 {
1416 struct mac80211_hwsim_data *data = hw->priv;
1417 data->started = false;
1418 tasklet_hrtimer_cancel(&data->beacon_timer);
1419 wiphy_debug(hw->wiphy, "%s\n", __func__);
1420 }
1421
1422
1423 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1424 struct ieee80211_vif *vif)
1425 {
1426 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1427 __func__, ieee80211_vif_type_p2p(vif),
1428 vif->addr);
1429 hwsim_set_magic(vif);
1430
1431 vif->cab_queue = 0;
1432 vif->hw_queue[IEEE80211_AC_VO] = 0;
1433 vif->hw_queue[IEEE80211_AC_VI] = 1;
1434 vif->hw_queue[IEEE80211_AC_BE] = 2;
1435 vif->hw_queue[IEEE80211_AC_BK] = 3;
1436
1437 return 0;
1438 }
1439
1440
1441 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1442 struct ieee80211_vif *vif,
1443 enum nl80211_iftype newtype,
1444 bool newp2p)
1445 {
1446 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1447 wiphy_debug(hw->wiphy,
1448 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1449 __func__, ieee80211_vif_type_p2p(vif),
1450 newtype, vif->addr);
1451 hwsim_check_magic(vif);
1452
1453 /*
1454 * interface may change from non-AP to AP in
1455 * which case this needs to be set up again
1456 */
1457 vif->cab_queue = 0;
1458
1459 return 0;
1460 }
1461
1462 static void mac80211_hwsim_remove_interface(
1463 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1464 {
1465 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1466 __func__, ieee80211_vif_type_p2p(vif),
1467 vif->addr);
1468 hwsim_check_magic(vif);
1469 hwsim_clear_magic(vif);
1470 }
1471
1472 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1473 struct sk_buff *skb,
1474 struct ieee80211_channel *chan)
1475 {
1476 struct mac80211_hwsim_data *data = hw->priv;
1477 u32 _pid = ACCESS_ONCE(data->wmediumd);
1478
1479 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1480 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1481 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1482 txi->control.rates,
1483 ARRAY_SIZE(txi->control.rates));
1484 }
1485
1486 mac80211_hwsim_monitor_rx(hw, skb, chan);
1487
1488 if (_pid)
1489 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1490
1491 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1492 dev_kfree_skb(skb);
1493 }
1494
1495 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1496 struct ieee80211_vif *vif)
1497 {
1498 struct mac80211_hwsim_data *data = arg;
1499 struct ieee80211_hw *hw = data->hw;
1500 struct ieee80211_tx_info *info;
1501 struct ieee80211_rate *txrate;
1502 struct ieee80211_mgmt *mgmt;
1503 struct sk_buff *skb;
1504
1505 hwsim_check_magic(vif);
1506
1507 if (vif->type != NL80211_IFTYPE_AP &&
1508 vif->type != NL80211_IFTYPE_MESH_POINT &&
1509 vif->type != NL80211_IFTYPE_ADHOC)
1510 return;
1511
1512 skb = ieee80211_beacon_get(hw, vif);
1513 if (skb == NULL)
1514 return;
1515 info = IEEE80211_SKB_CB(skb);
1516 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1517 ieee80211_get_tx_rates(vif, NULL, skb,
1518 info->control.rates,
1519 ARRAY_SIZE(info->control.rates));
1520
1521 txrate = ieee80211_get_tx_rate(hw, info);
1522
1523 mgmt = (struct ieee80211_mgmt *) skb->data;
1524 /* fake header transmission time */
1525 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1526 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1527 data->tsf_offset +
1528 24 * 8 * 10 / txrate->bitrate);
1529
1530 mac80211_hwsim_tx_frame(hw, skb,
1531 rcu_dereference(vif->chanctx_conf)->def.chan);
1532
1533 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1534 ieee80211_csa_finish(vif);
1535 }
1536
1537 static enum hrtimer_restart
1538 mac80211_hwsim_beacon(struct hrtimer *timer)
1539 {
1540 struct mac80211_hwsim_data *data =
1541 container_of(timer, struct mac80211_hwsim_data,
1542 beacon_timer.timer);
1543 struct ieee80211_hw *hw = data->hw;
1544 u64 bcn_int = data->beacon_int;
1545 ktime_t next_bcn;
1546
1547 if (!data->started)
1548 goto out;
1549
1550 ieee80211_iterate_active_interfaces_atomic(
1551 hw, IEEE80211_IFACE_ITER_NORMAL,
1552 mac80211_hwsim_beacon_tx, data);
1553
1554 /* beacon at new TBTT + beacon interval */
1555 if (data->bcn_delta) {
1556 bcn_int -= data->bcn_delta;
1557 data->bcn_delta = 0;
1558 }
1559
1560 next_bcn = ktime_add(hrtimer_get_expires(timer),
1561 ns_to_ktime(bcn_int * 1000));
1562 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1563 out:
1564 return HRTIMER_NORESTART;
1565 }
1566
1567 static const char * const hwsim_chanwidths[] = {
1568 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1569 [NL80211_CHAN_WIDTH_20] = "ht20",
1570 [NL80211_CHAN_WIDTH_40] = "ht40",
1571 [NL80211_CHAN_WIDTH_80] = "vht80",
1572 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1573 [NL80211_CHAN_WIDTH_160] = "vht160",
1574 };
1575
1576 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1577 {
1578 struct mac80211_hwsim_data *data = hw->priv;
1579 struct ieee80211_conf *conf = &hw->conf;
1580 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1581 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1582 [IEEE80211_SMPS_OFF] = "off",
1583 [IEEE80211_SMPS_STATIC] = "static",
1584 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1585 };
1586
1587 if (conf->chandef.chan)
1588 wiphy_debug(hw->wiphy,
1589 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1590 __func__,
1591 conf->chandef.chan->center_freq,
1592 conf->chandef.center_freq1,
1593 conf->chandef.center_freq2,
1594 hwsim_chanwidths[conf->chandef.width],
1595 !!(conf->flags & IEEE80211_CONF_IDLE),
1596 !!(conf->flags & IEEE80211_CONF_PS),
1597 smps_modes[conf->smps_mode]);
1598 else
1599 wiphy_debug(hw->wiphy,
1600 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1601 __func__,
1602 !!(conf->flags & IEEE80211_CONF_IDLE),
1603 !!(conf->flags & IEEE80211_CONF_PS),
1604 smps_modes[conf->smps_mode]);
1605
1606 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1607
1608 data->channel = conf->chandef.chan;
1609
1610 WARN_ON(data->channel && data->use_chanctx);
1611
1612 data->power_level = conf->power_level;
1613 if (!data->started || !data->beacon_int)
1614 tasklet_hrtimer_cancel(&data->beacon_timer);
1615 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1616 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1617 u32 bcn_int = data->beacon_int;
1618 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1619
1620 tasklet_hrtimer_start(&data->beacon_timer,
1621 ns_to_ktime(until_tbtt * 1000),
1622 HRTIMER_MODE_REL);
1623 }
1624
1625 return 0;
1626 }
1627
1628
1629 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1630 unsigned int changed_flags,
1631 unsigned int *total_flags,u64 multicast)
1632 {
1633 struct mac80211_hwsim_data *data = hw->priv;
1634
1635 wiphy_debug(hw->wiphy, "%s\n", __func__);
1636
1637 data->rx_filter = 0;
1638 if (*total_flags & FIF_ALLMULTI)
1639 data->rx_filter |= FIF_ALLMULTI;
1640
1641 *total_flags = data->rx_filter;
1642 }
1643
1644 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1645 struct ieee80211_vif *vif)
1646 {
1647 unsigned int *count = data;
1648 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1649
1650 if (vp->bcn_en)
1651 (*count)++;
1652 }
1653
1654 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1655 struct ieee80211_vif *vif,
1656 struct ieee80211_bss_conf *info,
1657 u32 changed)
1658 {
1659 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1660 struct mac80211_hwsim_data *data = hw->priv;
1661
1662 hwsim_check_magic(vif);
1663
1664 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1665 __func__, changed, vif->addr);
1666
1667 if (changed & BSS_CHANGED_BSSID) {
1668 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1669 __func__, info->bssid);
1670 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1671 }
1672
1673 if (changed & BSS_CHANGED_ASSOC) {
1674 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1675 info->assoc, info->aid);
1676 vp->assoc = info->assoc;
1677 vp->aid = info->aid;
1678 }
1679
1680 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1681 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1682 info->enable_beacon, info->beacon_int);
1683 vp->bcn_en = info->enable_beacon;
1684 if (data->started &&
1685 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1686 info->enable_beacon) {
1687 u64 tsf, until_tbtt;
1688 u32 bcn_int;
1689 data->beacon_int = info->beacon_int * 1024;
1690 tsf = mac80211_hwsim_get_tsf(hw, vif);
1691 bcn_int = data->beacon_int;
1692 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1693 tasklet_hrtimer_start(&data->beacon_timer,
1694 ns_to_ktime(until_tbtt * 1000),
1695 HRTIMER_MODE_REL);
1696 } else if (!info->enable_beacon) {
1697 unsigned int count = 0;
1698 ieee80211_iterate_active_interfaces_atomic(
1699 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1700 mac80211_hwsim_bcn_en_iter, &count);
1701 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1702 count);
1703 if (count == 0) {
1704 tasklet_hrtimer_cancel(&data->beacon_timer);
1705 data->beacon_int = 0;
1706 }
1707 }
1708 }
1709
1710 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1711 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1712 info->use_cts_prot);
1713 }
1714
1715 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1716 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1717 info->use_short_preamble);
1718 }
1719
1720 if (changed & BSS_CHANGED_ERP_SLOT) {
1721 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1722 }
1723
1724 if (changed & BSS_CHANGED_HT) {
1725 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1726 info->ht_operation_mode);
1727 }
1728
1729 if (changed & BSS_CHANGED_BASIC_RATES) {
1730 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1731 (unsigned long long) info->basic_rates);
1732 }
1733
1734 if (changed & BSS_CHANGED_TXPOWER)
1735 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1736 }
1737
1738 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1739 struct ieee80211_vif *vif,
1740 struct ieee80211_sta *sta)
1741 {
1742 hwsim_check_magic(vif);
1743 hwsim_set_sta_magic(sta);
1744
1745 return 0;
1746 }
1747
1748 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1749 struct ieee80211_vif *vif,
1750 struct ieee80211_sta *sta)
1751 {
1752 hwsim_check_magic(vif);
1753 hwsim_clear_sta_magic(sta);
1754
1755 return 0;
1756 }
1757
1758 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1759 struct ieee80211_vif *vif,
1760 enum sta_notify_cmd cmd,
1761 struct ieee80211_sta *sta)
1762 {
1763 hwsim_check_magic(vif);
1764
1765 switch (cmd) {
1766 case STA_NOTIFY_SLEEP:
1767 case STA_NOTIFY_AWAKE:
1768 /* TODO: make good use of these flags */
1769 break;
1770 default:
1771 WARN(1, "Invalid sta notify: %d\n", cmd);
1772 break;
1773 }
1774 }
1775
1776 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1777 struct ieee80211_sta *sta,
1778 bool set)
1779 {
1780 hwsim_check_sta_magic(sta);
1781 return 0;
1782 }
1783
1784 static int mac80211_hwsim_conf_tx(
1785 struct ieee80211_hw *hw,
1786 struct ieee80211_vif *vif, u16 queue,
1787 const struct ieee80211_tx_queue_params *params)
1788 {
1789 wiphy_debug(hw->wiphy,
1790 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1791 __func__, queue,
1792 params->txop, params->cw_min,
1793 params->cw_max, params->aifs);
1794 return 0;
1795 }
1796
1797 static int mac80211_hwsim_get_survey(
1798 struct ieee80211_hw *hw, int idx,
1799 struct survey_info *survey)
1800 {
1801 struct ieee80211_conf *conf = &hw->conf;
1802
1803 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1804
1805 if (idx != 0)
1806 return -ENOENT;
1807
1808 /* Current channel */
1809 survey->channel = conf->chandef.chan;
1810
1811 /*
1812 * Magically conjured noise level --- this is only ok for simulated hardware.
1813 *
1814 * A real driver which cannot determine the real channel noise MUST NOT
1815 * report any noise, especially not a magically conjured one :-)
1816 */
1817 survey->filled = SURVEY_INFO_NOISE_DBM;
1818 survey->noise = -92;
1819
1820 return 0;
1821 }
1822
1823 #ifdef CONFIG_NL80211_TESTMODE
1824 /*
1825 * This section contains example code for using netlink
1826 * attributes with the testmode command in nl80211.
1827 */
1828
1829 /* These enums need to be kept in sync with userspace */
1830 enum hwsim_testmode_attr {
1831 __HWSIM_TM_ATTR_INVALID = 0,
1832 HWSIM_TM_ATTR_CMD = 1,
1833 HWSIM_TM_ATTR_PS = 2,
1834
1835 /* keep last */
1836 __HWSIM_TM_ATTR_AFTER_LAST,
1837 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1838 };
1839
1840 enum hwsim_testmode_cmd {
1841 HWSIM_TM_CMD_SET_PS = 0,
1842 HWSIM_TM_CMD_GET_PS = 1,
1843 HWSIM_TM_CMD_STOP_QUEUES = 2,
1844 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1845 };
1846
1847 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1848 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1849 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1850 };
1851
1852 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1853 struct ieee80211_vif *vif,
1854 void *data, int len)
1855 {
1856 struct mac80211_hwsim_data *hwsim = hw->priv;
1857 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1858 struct sk_buff *skb;
1859 int err, ps;
1860
1861 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1862 hwsim_testmode_policy);
1863 if (err)
1864 return err;
1865
1866 if (!tb[HWSIM_TM_ATTR_CMD])
1867 return -EINVAL;
1868
1869 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1870 case HWSIM_TM_CMD_SET_PS:
1871 if (!tb[HWSIM_TM_ATTR_PS])
1872 return -EINVAL;
1873 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1874 return hwsim_fops_ps_write(hwsim, ps);
1875 case HWSIM_TM_CMD_GET_PS:
1876 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1877 nla_total_size(sizeof(u32)));
1878 if (!skb)
1879 return -ENOMEM;
1880 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1881 goto nla_put_failure;
1882 return cfg80211_testmode_reply(skb);
1883 case HWSIM_TM_CMD_STOP_QUEUES:
1884 ieee80211_stop_queues(hw);
1885 return 0;
1886 case HWSIM_TM_CMD_WAKE_QUEUES:
1887 ieee80211_wake_queues(hw);
1888 return 0;
1889 default:
1890 return -EOPNOTSUPP;
1891 }
1892
1893 nla_put_failure:
1894 kfree_skb(skb);
1895 return -ENOBUFS;
1896 }
1897 #endif
1898
1899 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1900 struct ieee80211_vif *vif,
1901 struct ieee80211_ampdu_params *params)
1902 {
1903 struct ieee80211_sta *sta = params->sta;
1904 enum ieee80211_ampdu_mlme_action action = params->action;
1905 u16 tid = params->tid;
1906
1907 switch (action) {
1908 case IEEE80211_AMPDU_TX_START:
1909 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1910 break;
1911 case IEEE80211_AMPDU_TX_STOP_CONT:
1912 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1913 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1914 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1915 break;
1916 case IEEE80211_AMPDU_TX_OPERATIONAL:
1917 break;
1918 case IEEE80211_AMPDU_RX_START:
1919 case IEEE80211_AMPDU_RX_STOP:
1920 break;
1921 default:
1922 return -EOPNOTSUPP;
1923 }
1924
1925 return 0;
1926 }
1927
1928 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1929 struct ieee80211_vif *vif,
1930 u32 queues, bool drop)
1931 {
1932 /* Not implemented, queues only on kernel side */
1933 }
1934
1935 static void hw_scan_work(struct work_struct *work)
1936 {
1937 struct mac80211_hwsim_data *hwsim =
1938 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1939 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1940 int dwell, i;
1941
1942 mutex_lock(&hwsim->mutex);
1943 if (hwsim->scan_chan_idx >= req->n_channels) {
1944 struct cfg80211_scan_info info = {
1945 .aborted = false,
1946 };
1947
1948 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1949 ieee80211_scan_completed(hwsim->hw, &info);
1950 hwsim->hw_scan_request = NULL;
1951 hwsim->hw_scan_vif = NULL;
1952 hwsim->tmp_chan = NULL;
1953 mutex_unlock(&hwsim->mutex);
1954 return;
1955 }
1956
1957 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1958 req->channels[hwsim->scan_chan_idx]->center_freq);
1959
1960 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1961 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1962 IEEE80211_CHAN_RADAR) ||
1963 !req->n_ssids) {
1964 dwell = 120;
1965 } else {
1966 dwell = 30;
1967 /* send probes */
1968 for (i = 0; i < req->n_ssids; i++) {
1969 struct sk_buff *probe;
1970 struct ieee80211_mgmt *mgmt;
1971
1972 probe = ieee80211_probereq_get(hwsim->hw,
1973 hwsim->scan_addr,
1974 req->ssids[i].ssid,
1975 req->ssids[i].ssid_len,
1976 req->ie_len);
1977 if (!probe)
1978 continue;
1979
1980 mgmt = (struct ieee80211_mgmt *) probe->data;
1981 memcpy(mgmt->da, req->bssid, ETH_ALEN);
1982 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
1983
1984 if (req->ie_len)
1985 memcpy(skb_put(probe, req->ie_len), req->ie,
1986 req->ie_len);
1987
1988 local_bh_disable();
1989 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1990 hwsim->tmp_chan);
1991 local_bh_enable();
1992 }
1993 }
1994 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1995 msecs_to_jiffies(dwell));
1996 hwsim->scan_chan_idx++;
1997 mutex_unlock(&hwsim->mutex);
1998 }
1999
2000 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2001 struct ieee80211_vif *vif,
2002 struct ieee80211_scan_request *hw_req)
2003 {
2004 struct mac80211_hwsim_data *hwsim = hw->priv;
2005 struct cfg80211_scan_request *req = &hw_req->req;
2006
2007 mutex_lock(&hwsim->mutex);
2008 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2009 mutex_unlock(&hwsim->mutex);
2010 return -EBUSY;
2011 }
2012 hwsim->hw_scan_request = req;
2013 hwsim->hw_scan_vif = vif;
2014 hwsim->scan_chan_idx = 0;
2015 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2016 get_random_mask_addr(hwsim->scan_addr,
2017 hw_req->req.mac_addr,
2018 hw_req->req.mac_addr_mask);
2019 else
2020 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2021 mutex_unlock(&hwsim->mutex);
2022
2023 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2024
2025 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2026
2027 return 0;
2028 }
2029
2030 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2031 struct ieee80211_vif *vif)
2032 {
2033 struct mac80211_hwsim_data *hwsim = hw->priv;
2034 struct cfg80211_scan_info info = {
2035 .aborted = true,
2036 };
2037
2038 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2039
2040 cancel_delayed_work_sync(&hwsim->hw_scan);
2041
2042 mutex_lock(&hwsim->mutex);
2043 ieee80211_scan_completed(hwsim->hw, &info);
2044 hwsim->tmp_chan = NULL;
2045 hwsim->hw_scan_request = NULL;
2046 hwsim->hw_scan_vif = NULL;
2047 mutex_unlock(&hwsim->mutex);
2048 }
2049
2050 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2051 struct ieee80211_vif *vif,
2052 const u8 *mac_addr)
2053 {
2054 struct mac80211_hwsim_data *hwsim = hw->priv;
2055
2056 mutex_lock(&hwsim->mutex);
2057
2058 if (hwsim->scanning) {
2059 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2060 goto out;
2061 }
2062
2063 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2064
2065 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2066 hwsim->scanning = true;
2067
2068 out:
2069 mutex_unlock(&hwsim->mutex);
2070 }
2071
2072 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2073 struct ieee80211_vif *vif)
2074 {
2075 struct mac80211_hwsim_data *hwsim = hw->priv;
2076
2077 mutex_lock(&hwsim->mutex);
2078
2079 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2080 hwsim->scanning = false;
2081 eth_zero_addr(hwsim->scan_addr);
2082
2083 mutex_unlock(&hwsim->mutex);
2084 }
2085
2086 static void hw_roc_start(struct work_struct *work)
2087 {
2088 struct mac80211_hwsim_data *hwsim =
2089 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2090
2091 mutex_lock(&hwsim->mutex);
2092
2093 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2094 hwsim->tmp_chan = hwsim->roc_chan;
2095 ieee80211_ready_on_channel(hwsim->hw);
2096
2097 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2098 msecs_to_jiffies(hwsim->roc_duration));
2099
2100 mutex_unlock(&hwsim->mutex);
2101 }
2102
2103 static void hw_roc_done(struct work_struct *work)
2104 {
2105 struct mac80211_hwsim_data *hwsim =
2106 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2107
2108 mutex_lock(&hwsim->mutex);
2109 ieee80211_remain_on_channel_expired(hwsim->hw);
2110 hwsim->tmp_chan = NULL;
2111 mutex_unlock(&hwsim->mutex);
2112
2113 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2114 }
2115
2116 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2117 struct ieee80211_vif *vif,
2118 struct ieee80211_channel *chan,
2119 int duration,
2120 enum ieee80211_roc_type type)
2121 {
2122 struct mac80211_hwsim_data *hwsim = hw->priv;
2123
2124 mutex_lock(&hwsim->mutex);
2125 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2126 mutex_unlock(&hwsim->mutex);
2127 return -EBUSY;
2128 }
2129
2130 hwsim->roc_chan = chan;
2131 hwsim->roc_duration = duration;
2132 mutex_unlock(&hwsim->mutex);
2133
2134 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2135 chan->center_freq, duration);
2136 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2137
2138 return 0;
2139 }
2140
2141 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2142 {
2143 struct mac80211_hwsim_data *hwsim = hw->priv;
2144
2145 cancel_delayed_work_sync(&hwsim->roc_start);
2146 cancel_delayed_work_sync(&hwsim->roc_done);
2147
2148 mutex_lock(&hwsim->mutex);
2149 hwsim->tmp_chan = NULL;
2150 mutex_unlock(&hwsim->mutex);
2151
2152 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2153
2154 return 0;
2155 }
2156
2157 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2158 struct ieee80211_chanctx_conf *ctx)
2159 {
2160 hwsim_set_chanctx_magic(ctx);
2161 wiphy_debug(hw->wiphy,
2162 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2163 ctx->def.chan->center_freq, ctx->def.width,
2164 ctx->def.center_freq1, ctx->def.center_freq2);
2165 return 0;
2166 }
2167
2168 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2169 struct ieee80211_chanctx_conf *ctx)
2170 {
2171 wiphy_debug(hw->wiphy,
2172 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2173 ctx->def.chan->center_freq, ctx->def.width,
2174 ctx->def.center_freq1, ctx->def.center_freq2);
2175 hwsim_check_chanctx_magic(ctx);
2176 hwsim_clear_chanctx_magic(ctx);
2177 }
2178
2179 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2180 struct ieee80211_chanctx_conf *ctx,
2181 u32 changed)
2182 {
2183 hwsim_check_chanctx_magic(ctx);
2184 wiphy_debug(hw->wiphy,
2185 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2186 ctx->def.chan->center_freq, ctx->def.width,
2187 ctx->def.center_freq1, ctx->def.center_freq2);
2188 }
2189
2190 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2191 struct ieee80211_vif *vif,
2192 struct ieee80211_chanctx_conf *ctx)
2193 {
2194 hwsim_check_magic(vif);
2195 hwsim_check_chanctx_magic(ctx);
2196
2197 return 0;
2198 }
2199
2200 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2201 struct ieee80211_vif *vif,
2202 struct ieee80211_chanctx_conf *ctx)
2203 {
2204 hwsim_check_magic(vif);
2205 hwsim_check_chanctx_magic(ctx);
2206 }
2207
2208 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2209 "tx_pkts_nic",
2210 "tx_bytes_nic",
2211 "rx_pkts_nic",
2212 "rx_bytes_nic",
2213 "d_tx_dropped",
2214 "d_tx_failed",
2215 "d_ps_mode",
2216 "d_group",
2217 "d_tx_power",
2218 };
2219
2220 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2221
2222 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2223 struct ieee80211_vif *vif,
2224 u32 sset, u8 *data)
2225 {
2226 if (sset == ETH_SS_STATS)
2227 memcpy(data, *mac80211_hwsim_gstrings_stats,
2228 sizeof(mac80211_hwsim_gstrings_stats));
2229 }
2230
2231 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2232 struct ieee80211_vif *vif, int sset)
2233 {
2234 if (sset == ETH_SS_STATS)
2235 return MAC80211_HWSIM_SSTATS_LEN;
2236 return 0;
2237 }
2238
2239 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2240 struct ieee80211_vif *vif,
2241 struct ethtool_stats *stats, u64 *data)
2242 {
2243 struct mac80211_hwsim_data *ar = hw->priv;
2244 int i = 0;
2245
2246 data[i++] = ar->tx_pkts;
2247 data[i++] = ar->tx_bytes;
2248 data[i++] = ar->rx_pkts;
2249 data[i++] = ar->rx_bytes;
2250 data[i++] = ar->tx_dropped;
2251 data[i++] = ar->tx_failed;
2252 data[i++] = ar->ps;
2253 data[i++] = ar->group;
2254 data[i++] = ar->power_level;
2255
2256 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2257 }
2258
2259 static const struct ieee80211_ops mac80211_hwsim_ops = {
2260 .tx = mac80211_hwsim_tx,
2261 .start = mac80211_hwsim_start,
2262 .stop = mac80211_hwsim_stop,
2263 .add_interface = mac80211_hwsim_add_interface,
2264 .change_interface = mac80211_hwsim_change_interface,
2265 .remove_interface = mac80211_hwsim_remove_interface,
2266 .config = mac80211_hwsim_config,
2267 .configure_filter = mac80211_hwsim_configure_filter,
2268 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2269 .sta_add = mac80211_hwsim_sta_add,
2270 .sta_remove = mac80211_hwsim_sta_remove,
2271 .sta_notify = mac80211_hwsim_sta_notify,
2272 .set_tim = mac80211_hwsim_set_tim,
2273 .conf_tx = mac80211_hwsim_conf_tx,
2274 .get_survey = mac80211_hwsim_get_survey,
2275 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2276 .ampdu_action = mac80211_hwsim_ampdu_action,
2277 .sw_scan_start = mac80211_hwsim_sw_scan,
2278 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2279 .flush = mac80211_hwsim_flush,
2280 .get_tsf = mac80211_hwsim_get_tsf,
2281 .set_tsf = mac80211_hwsim_set_tsf,
2282 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2283 .get_et_stats = mac80211_hwsim_get_et_stats,
2284 .get_et_strings = mac80211_hwsim_get_et_strings,
2285 };
2286
2287 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2288
2289 struct hwsim_new_radio_params {
2290 unsigned int channels;
2291 const char *reg_alpha2;
2292 const struct ieee80211_regdomain *regd;
2293 bool reg_strict;
2294 bool p2p_device;
2295 bool use_chanctx;
2296 bool destroy_on_close;
2297 const char *hwname;
2298 bool no_vif;
2299 };
2300
2301 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2302 struct genl_info *info)
2303 {
2304 if (info)
2305 genl_notify(&hwsim_genl_family, mcast_skb, info,
2306 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2307 else
2308 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2309 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2310 }
2311
2312 static int append_radio_msg(struct sk_buff *skb, int id,
2313 struct hwsim_new_radio_params *param)
2314 {
2315 int ret;
2316
2317 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2318 if (ret < 0)
2319 return ret;
2320
2321 if (param->channels) {
2322 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2323 if (ret < 0)
2324 return ret;
2325 }
2326
2327 if (param->reg_alpha2) {
2328 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2329 param->reg_alpha2);
2330 if (ret < 0)
2331 return ret;
2332 }
2333
2334 if (param->regd) {
2335 int i;
2336
2337 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2338 if (hwsim_world_regdom_custom[i] != param->regd)
2339 continue;
2340
2341 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2342 if (ret < 0)
2343 return ret;
2344 break;
2345 }
2346 }
2347
2348 if (param->reg_strict) {
2349 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2350 if (ret < 0)
2351 return ret;
2352 }
2353
2354 if (param->p2p_device) {
2355 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2356 if (ret < 0)
2357 return ret;
2358 }
2359
2360 if (param->use_chanctx) {
2361 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2362 if (ret < 0)
2363 return ret;
2364 }
2365
2366 if (param->hwname) {
2367 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2368 strlen(param->hwname), param->hwname);
2369 if (ret < 0)
2370 return ret;
2371 }
2372
2373 return 0;
2374 }
2375
2376 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2377 struct hwsim_new_radio_params *param)
2378 {
2379 struct sk_buff *mcast_skb;
2380 void *data;
2381
2382 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2383 if (!mcast_skb)
2384 return;
2385
2386 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2387 HWSIM_CMD_NEW_RADIO);
2388 if (!data)
2389 goto out_err;
2390
2391 if (append_radio_msg(mcast_skb, id, param) < 0)
2392 goto out_err;
2393
2394 genlmsg_end(mcast_skb, data);
2395
2396 hwsim_mcast_config_msg(mcast_skb, info);
2397 return;
2398
2399 out_err:
2400 genlmsg_cancel(mcast_skb, data);
2401 nlmsg_free(mcast_skb);
2402 }
2403
2404 static int mac80211_hwsim_new_radio(struct genl_info *info,
2405 struct hwsim_new_radio_params *param)
2406 {
2407 int err;
2408 u8 addr[ETH_ALEN];
2409 struct mac80211_hwsim_data *data;
2410 struct ieee80211_hw *hw;
2411 enum nl80211_band band;
2412 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2413 struct net *net;
2414 int idx;
2415
2416 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2417 return -EINVAL;
2418
2419 spin_lock_bh(&hwsim_radio_lock);
2420 idx = hwsim_radio_idx++;
2421 spin_unlock_bh(&hwsim_radio_lock);
2422
2423 if (param->use_chanctx)
2424 ops = &mac80211_hwsim_mchan_ops;
2425 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2426 if (!hw) {
2427 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2428 err = -ENOMEM;
2429 goto failed;
2430 }
2431
2432 if (info)
2433 net = genl_info_net(info);
2434 else
2435 net = &init_net;
2436 wiphy_net_set(hw->wiphy, net);
2437
2438 data = hw->priv;
2439 data->hw = hw;
2440
2441 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2442 if (IS_ERR(data->dev)) {
2443 printk(KERN_DEBUG
2444 "mac80211_hwsim: device_create failed (%ld)\n",
2445 PTR_ERR(data->dev));
2446 err = -ENOMEM;
2447 goto failed_drvdata;
2448 }
2449 data->dev->driver = &mac80211_hwsim_driver.driver;
2450 err = device_bind_driver(data->dev);
2451 if (err != 0) {
2452 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2453 err);
2454 goto failed_bind;
2455 }
2456
2457 skb_queue_head_init(&data->pending);
2458
2459 SET_IEEE80211_DEV(hw, data->dev);
2460 eth_zero_addr(addr);
2461 addr[0] = 0x02;
2462 addr[3] = idx >> 8;
2463 addr[4] = idx;
2464 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2465 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2466 data->addresses[1].addr[0] |= 0x40;
2467 hw->wiphy->n_addresses = 2;
2468 hw->wiphy->addresses = data->addresses;
2469
2470 data->channels = param->channels;
2471 data->use_chanctx = param->use_chanctx;
2472 data->idx = idx;
2473 data->destroy_on_close = param->destroy_on_close;
2474 if (info)
2475 data->portid = info->snd_portid;
2476
2477 if (data->use_chanctx) {
2478 hw->wiphy->max_scan_ssids = 255;
2479 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2480 hw->wiphy->max_remain_on_channel_duration = 1000;
2481 hw->wiphy->iface_combinations = &data->if_combination;
2482 if (param->p2p_device)
2483 data->if_combination = hwsim_if_comb_p2p_dev[0];
2484 else
2485 data->if_combination = hwsim_if_comb[0];
2486 hw->wiphy->n_iface_combinations = 1;
2487 /* For channels > 1 DFS is not allowed */
2488 data->if_combination.radar_detect_widths = 0;
2489 data->if_combination.num_different_channels = data->channels;
2490 } else if (param->p2p_device) {
2491 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2492 hw->wiphy->n_iface_combinations =
2493 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2494 } else {
2495 hw->wiphy->iface_combinations = hwsim_if_comb;
2496 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2497 }
2498
2499 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2500 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2501 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2502
2503 hw->queues = 5;
2504 hw->offchannel_tx_hw_queue = 4;
2505 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2506 BIT(NL80211_IFTYPE_AP) |
2507 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2508 BIT(NL80211_IFTYPE_P2P_GO) |
2509 BIT(NL80211_IFTYPE_ADHOC) |
2510 BIT(NL80211_IFTYPE_MESH_POINT);
2511
2512 if (param->p2p_device)
2513 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2514
2515 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2516 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2517 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2518 ieee80211_hw_set(hw, QUEUE_CONTROL);
2519 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2520 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2521 ieee80211_hw_set(hw, MFP_CAPABLE);
2522 ieee80211_hw_set(hw, SIGNAL_DBM);
2523 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2524 if (rctbl)
2525 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2526
2527 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2528 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2529 WIPHY_FLAG_AP_UAPSD |
2530 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2531 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2532 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2533 NL80211_FEATURE_STATIC_SMPS |
2534 NL80211_FEATURE_DYNAMIC_SMPS |
2535 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2536 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2537
2538 /* ask mac80211 to reserve space for magic */
2539 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2540 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2541 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2542
2543 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2544 sizeof(hwsim_channels_2ghz));
2545 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2546 sizeof(hwsim_channels_5ghz));
2547 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2548
2549 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2550 struct ieee80211_supported_band *sband = &data->bands[band];
2551 switch (band) {
2552 case NL80211_BAND_2GHZ:
2553 sband->channels = data->channels_2ghz;
2554 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2555 sband->bitrates = data->rates;
2556 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2557 break;
2558 case NL80211_BAND_5GHZ:
2559 sband->channels = data->channels_5ghz;
2560 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2561 sband->bitrates = data->rates + 4;
2562 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2563
2564 sband->vht_cap.vht_supported = true;
2565 sband->vht_cap.cap =
2566 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2567 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2568 IEEE80211_VHT_CAP_RXLDPC |
2569 IEEE80211_VHT_CAP_SHORT_GI_80 |
2570 IEEE80211_VHT_CAP_SHORT_GI_160 |
2571 IEEE80211_VHT_CAP_TXSTBC |
2572 IEEE80211_VHT_CAP_RXSTBC_1 |
2573 IEEE80211_VHT_CAP_RXSTBC_2 |
2574 IEEE80211_VHT_CAP_RXSTBC_3 |
2575 IEEE80211_VHT_CAP_RXSTBC_4 |
2576 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2577 sband->vht_cap.vht_mcs.rx_mcs_map =
2578 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2579 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2580 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2581 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2582 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2583 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2584 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2585 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2586 sband->vht_cap.vht_mcs.tx_mcs_map =
2587 sband->vht_cap.vht_mcs.rx_mcs_map;
2588 break;
2589 default:
2590 continue;
2591 }
2592
2593 sband->ht_cap.ht_supported = true;
2594 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2595 IEEE80211_HT_CAP_GRN_FLD |
2596 IEEE80211_HT_CAP_SGI_20 |
2597 IEEE80211_HT_CAP_SGI_40 |
2598 IEEE80211_HT_CAP_DSSSCCK40;
2599 sband->ht_cap.ampdu_factor = 0x3;
2600 sband->ht_cap.ampdu_density = 0x6;
2601 memset(&sband->ht_cap.mcs, 0,
2602 sizeof(sband->ht_cap.mcs));
2603 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2604 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2605 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2606
2607 hw->wiphy->bands[band] = sband;
2608 }
2609
2610 /* By default all radios belong to the first group */
2611 data->group = 1;
2612 mutex_init(&data->mutex);
2613
2614 data->netgroup = hwsim_net_get_netgroup(net);
2615
2616 /* Enable frame retransmissions for lossy channels */
2617 hw->max_rates = 4;
2618 hw->max_rate_tries = 11;
2619
2620 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2621 hw->wiphy->n_vendor_commands =
2622 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2623 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2624 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2625
2626 if (param->reg_strict)
2627 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2628 if (param->regd) {
2629 data->regd = param->regd;
2630 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2631 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2632 /* give the regulatory workqueue a chance to run */
2633 schedule_timeout_interruptible(1);
2634 }
2635
2636 if (param->no_vif)
2637 ieee80211_hw_set(hw, NO_AUTO_VIF);
2638
2639 err = ieee80211_register_hw(hw);
2640 if (err < 0) {
2641 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2642 err);
2643 goto failed_hw;
2644 }
2645
2646 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2647
2648 if (param->reg_alpha2) {
2649 data->alpha2[0] = param->reg_alpha2[0];
2650 data->alpha2[1] = param->reg_alpha2[1];
2651 regulatory_hint(hw->wiphy, param->reg_alpha2);
2652 }
2653
2654 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2655 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2656 debugfs_create_file("group", 0666, data->debugfs, data,
2657 &hwsim_fops_group);
2658 if (!data->use_chanctx)
2659 debugfs_create_file("dfs_simulate_radar", 0222,
2660 data->debugfs,
2661 data, &hwsim_simulate_radar);
2662
2663 tasklet_hrtimer_init(&data->beacon_timer,
2664 mac80211_hwsim_beacon,
2665 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2666
2667 spin_lock_bh(&hwsim_radio_lock);
2668 list_add_tail(&data->list, &hwsim_radios);
2669 spin_unlock_bh(&hwsim_radio_lock);
2670
2671 if (idx > 0)
2672 hwsim_mcast_new_radio(idx, info, param);
2673
2674 return idx;
2675
2676 failed_hw:
2677 device_release_driver(data->dev);
2678 failed_bind:
2679 device_unregister(data->dev);
2680 failed_drvdata:
2681 ieee80211_free_hw(hw);
2682 failed:
2683 return err;
2684 }
2685
2686 static void hwsim_mcast_del_radio(int id, const char *hwname,
2687 struct genl_info *info)
2688 {
2689 struct sk_buff *skb;
2690 void *data;
2691 int ret;
2692
2693 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2694 if (!skb)
2695 return;
2696
2697 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2698 HWSIM_CMD_DEL_RADIO);
2699 if (!data)
2700 goto error;
2701
2702 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2703 if (ret < 0)
2704 goto error;
2705
2706 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2707 hwname);
2708 if (ret < 0)
2709 goto error;
2710
2711 genlmsg_end(skb, data);
2712
2713 hwsim_mcast_config_msg(skb, info);
2714
2715 return;
2716
2717 error:
2718 nlmsg_free(skb);
2719 }
2720
2721 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2722 const char *hwname,
2723 struct genl_info *info)
2724 {
2725 hwsim_mcast_del_radio(data->idx, hwname, info);
2726 debugfs_remove_recursive(data->debugfs);
2727 ieee80211_unregister_hw(data->hw);
2728 device_release_driver(data->dev);
2729 device_unregister(data->dev);
2730 ieee80211_free_hw(data->hw);
2731 }
2732
2733 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2734 struct mac80211_hwsim_data *data,
2735 u32 portid, u32 seq,
2736 struct netlink_callback *cb, int flags)
2737 {
2738 void *hdr;
2739 struct hwsim_new_radio_params param = { };
2740 int res = -EMSGSIZE;
2741
2742 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2743 HWSIM_CMD_GET_RADIO);
2744 if (!hdr)
2745 return -EMSGSIZE;
2746
2747 if (cb)
2748 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2749
2750 if (data->alpha2[0] && data->alpha2[1])
2751 param.reg_alpha2 = data->alpha2;
2752
2753 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2754 REGULATORY_STRICT_REG);
2755 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2756 BIT(NL80211_IFTYPE_P2P_DEVICE));
2757 param.use_chanctx = data->use_chanctx;
2758 param.regd = data->regd;
2759 param.channels = data->channels;
2760 param.hwname = wiphy_name(data->hw->wiphy);
2761
2762 res = append_radio_msg(skb, data->idx, &param);
2763 if (res < 0)
2764 goto out_err;
2765
2766 genlmsg_end(skb, hdr);
2767 return 0;
2768
2769 out_err:
2770 genlmsg_cancel(skb, hdr);
2771 return res;
2772 }
2773
2774 static void mac80211_hwsim_free(void)
2775 {
2776 struct mac80211_hwsim_data *data;
2777
2778 spin_lock_bh(&hwsim_radio_lock);
2779 while ((data = list_first_entry_or_null(&hwsim_radios,
2780 struct mac80211_hwsim_data,
2781 list))) {
2782 list_del(&data->list);
2783 spin_unlock_bh(&hwsim_radio_lock);
2784 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2785 NULL);
2786 spin_lock_bh(&hwsim_radio_lock);
2787 }
2788 spin_unlock_bh(&hwsim_radio_lock);
2789 class_destroy(hwsim_class);
2790 }
2791
2792 static const struct net_device_ops hwsim_netdev_ops = {
2793 .ndo_start_xmit = hwsim_mon_xmit,
2794 .ndo_change_mtu = eth_change_mtu,
2795 .ndo_set_mac_address = eth_mac_addr,
2796 .ndo_validate_addr = eth_validate_addr,
2797 };
2798
2799 static void hwsim_mon_setup(struct net_device *dev)
2800 {
2801 dev->netdev_ops = &hwsim_netdev_ops;
2802 dev->destructor = free_netdev;
2803 ether_setup(dev);
2804 dev->priv_flags |= IFF_NO_QUEUE;
2805 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2806 eth_zero_addr(dev->dev_addr);
2807 dev->dev_addr[0] = 0x12;
2808 }
2809
2810 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2811 {
2812 struct mac80211_hwsim_data *data;
2813 bool _found = false;
2814
2815 spin_lock_bh(&hwsim_radio_lock);
2816 list_for_each_entry(data, &hwsim_radios, list) {
2817 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2818 _found = true;
2819 break;
2820 }
2821 }
2822 spin_unlock_bh(&hwsim_radio_lock);
2823
2824 if (!_found)
2825 return NULL;
2826
2827 return data;
2828 }
2829
2830 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2831 {
2832 struct mac80211_hwsim_data *data;
2833
2834 hwsim_net_set_wmediumd(net, portid);
2835
2836 spin_lock_bh(&hwsim_radio_lock);
2837 list_for_each_entry(data, &hwsim_radios, list) {
2838 if (data->netgroup == hwsim_net_get_netgroup(net))
2839 data->wmediumd = portid;
2840 }
2841 spin_unlock_bh(&hwsim_radio_lock);
2842 }
2843
2844 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2845 struct genl_info *info)
2846 {
2847
2848 struct ieee80211_hdr *hdr;
2849 struct mac80211_hwsim_data *data2;
2850 struct ieee80211_tx_info *txi;
2851 struct hwsim_tx_rate *tx_attempts;
2852 u64 ret_skb_cookie;
2853 struct sk_buff *skb, *tmp;
2854 const u8 *src;
2855 unsigned int hwsim_flags;
2856 int i;
2857 bool found = false;
2858
2859 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2860 !info->attrs[HWSIM_ATTR_FLAGS] ||
2861 !info->attrs[HWSIM_ATTR_COOKIE] ||
2862 !info->attrs[HWSIM_ATTR_SIGNAL] ||
2863 !info->attrs[HWSIM_ATTR_TX_INFO])
2864 goto out;
2865
2866 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2867 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2868 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2869
2870 data2 = get_hwsim_data_ref_from_addr(src);
2871 if (!data2)
2872 goto out;
2873
2874 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2875 goto out;
2876
2877 if (info->snd_portid != data2->wmediumd)
2878 goto out;
2879
2880 /* look for the skb matching the cookie passed back from user */
2881 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2882 u64 skb_cookie;
2883
2884 txi = IEEE80211_SKB_CB(skb);
2885 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2886
2887 if (skb_cookie == ret_skb_cookie) {
2888 skb_unlink(skb, &data2->pending);
2889 found = true;
2890 break;
2891 }
2892 }
2893
2894 /* not found */
2895 if (!found)
2896 goto out;
2897
2898 /* Tx info received because the frame was broadcasted on user space,
2899 so we get all the necessary info: tx attempts and skb control buff */
2900
2901 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2902 info->attrs[HWSIM_ATTR_TX_INFO]);
2903
2904 /* now send back TX status */
2905 txi = IEEE80211_SKB_CB(skb);
2906
2907 ieee80211_tx_info_clear_status(txi);
2908
2909 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2910 txi->status.rates[i].idx = tx_attempts[i].idx;
2911 txi->status.rates[i].count = tx_attempts[i].count;
2912 /*txi->status.rates[i].flags = 0;*/
2913 }
2914
2915 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2916
2917 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2918 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2919 if (skb->len >= 16) {
2920 hdr = (struct ieee80211_hdr *) skb->data;
2921 mac80211_hwsim_monitor_ack(data2->channel,
2922 hdr->addr2);
2923 }
2924 txi->flags |= IEEE80211_TX_STAT_ACK;
2925 }
2926 ieee80211_tx_status_irqsafe(data2->hw, skb);
2927 return 0;
2928 out:
2929 return -EINVAL;
2930
2931 }
2932
2933 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2934 struct genl_info *info)
2935 {
2936 struct mac80211_hwsim_data *data2;
2937 struct ieee80211_rx_status rx_status;
2938 const u8 *dst;
2939 int frame_data_len;
2940 void *frame_data;
2941 struct sk_buff *skb = NULL;
2942
2943 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2944 !info->attrs[HWSIM_ATTR_FRAME] ||
2945 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2946 !info->attrs[HWSIM_ATTR_SIGNAL])
2947 goto out;
2948
2949 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2950 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2951 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2952
2953 /* Allocate new skb here */
2954 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2955 if (skb == NULL)
2956 goto err;
2957
2958 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2959 goto err;
2960
2961 /* Copy the data */
2962 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2963
2964 data2 = get_hwsim_data_ref_from_addr(dst);
2965 if (!data2)
2966 goto out;
2967
2968 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2969 goto out;
2970
2971 if (info->snd_portid != data2->wmediumd)
2972 goto out;
2973
2974 /* check if radio is configured properly */
2975
2976 if (data2->idle || !data2->started)
2977 goto out;
2978
2979 /* A frame is received from user space */
2980 memset(&rx_status, 0, sizeof(rx_status));
2981 if (info->attrs[HWSIM_ATTR_FREQ]) {
2982 /* throw away off-channel packets, but allow both the temporary
2983 * ("hw" scan/remain-on-channel) and regular channel, since the
2984 * internal datapath also allows this
2985 */
2986 mutex_lock(&data2->mutex);
2987 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2988
2989 if (rx_status.freq != data2->channel->center_freq &&
2990 (!data2->tmp_chan ||
2991 rx_status.freq != data2->tmp_chan->center_freq)) {
2992 mutex_unlock(&data2->mutex);
2993 goto out;
2994 }
2995 mutex_unlock(&data2->mutex);
2996 } else {
2997 rx_status.freq = data2->channel->center_freq;
2998 }
2999
3000 rx_status.band = data2->channel->band;
3001 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3002 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3003
3004 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3005 data2->rx_pkts++;
3006 data2->rx_bytes += skb->len;
3007 ieee80211_rx_irqsafe(data2->hw, skb);
3008
3009 return 0;
3010 err:
3011 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3012 out:
3013 dev_kfree_skb(skb);
3014 return -EINVAL;
3015 }
3016
3017 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3018 struct genl_info *info)
3019 {
3020 struct net *net = genl_info_net(info);
3021 struct mac80211_hwsim_data *data;
3022 int chans = 1;
3023
3024 spin_lock_bh(&hwsim_radio_lock);
3025 list_for_each_entry(data, &hwsim_radios, list)
3026 chans = max(chans, data->channels);
3027 spin_unlock_bh(&hwsim_radio_lock);
3028
3029 /* In the future we should revise the userspace API and allow it
3030 * to set a flag that it does support multi-channel, then we can
3031 * let this pass conditionally on the flag.
3032 * For current userspace, prohibit it since it won't work right.
3033 */
3034 if (chans > 1)
3035 return -EOPNOTSUPP;
3036
3037 if (hwsim_net_get_wmediumd(net))
3038 return -EBUSY;
3039
3040 hwsim_register_wmediumd(net, info->snd_portid);
3041
3042 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3043 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3044
3045 return 0;
3046 }
3047
3048 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3049 {
3050 struct hwsim_new_radio_params param = { 0 };
3051
3052 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3053 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3054 param.channels = channels;
3055 param.destroy_on_close =
3056 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3057
3058 if (info->attrs[HWSIM_ATTR_CHANNELS])
3059 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3060
3061 if (info->attrs[HWSIM_ATTR_NO_VIF])
3062 param.no_vif = true;
3063
3064 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3065 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3066
3067 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3068 param.use_chanctx = true;
3069 else
3070 param.use_chanctx = (param.channels > 1);
3071
3072 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3073 param.reg_alpha2 =
3074 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3075
3076 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3077 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3078
3079 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3080 return -EINVAL;
3081 param.regd = hwsim_world_regdom_custom[idx];
3082 }
3083
3084 return mac80211_hwsim_new_radio(info, &param);
3085 }
3086
3087 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3088 {
3089 struct mac80211_hwsim_data *data;
3090 s64 idx = -1;
3091 const char *hwname = NULL;
3092
3093 if (info->attrs[HWSIM_ATTR_RADIO_ID])
3094 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3095 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3096 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3097 else
3098 return -EINVAL;
3099
3100 spin_lock_bh(&hwsim_radio_lock);
3101 list_for_each_entry(data, &hwsim_radios, list) {
3102 if (idx >= 0) {
3103 if (data->idx != idx)
3104 continue;
3105 } else {
3106 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3107 continue;
3108 }
3109
3110 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3111 continue;
3112
3113 list_del(&data->list);
3114 spin_unlock_bh(&hwsim_radio_lock);
3115 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3116 info);
3117 return 0;
3118 }
3119 spin_unlock_bh(&hwsim_radio_lock);
3120
3121 return -ENODEV;
3122 }
3123
3124 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3125 {
3126 struct mac80211_hwsim_data *data;
3127 struct sk_buff *skb;
3128 int idx, res = -ENODEV;
3129
3130 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3131 return -EINVAL;
3132 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3133
3134 spin_lock_bh(&hwsim_radio_lock);
3135 list_for_each_entry(data, &hwsim_radios, list) {
3136 if (data->idx != idx)
3137 continue;
3138
3139 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3140 continue;
3141
3142 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3143 if (!skb) {
3144 res = -ENOMEM;
3145 goto out_err;
3146 }
3147
3148 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3149 info->snd_seq, NULL, 0);
3150 if (res < 0) {
3151 nlmsg_free(skb);
3152 goto out_err;
3153 }
3154
3155 genlmsg_reply(skb, info);
3156 break;
3157 }
3158
3159 out_err:
3160 spin_unlock_bh(&hwsim_radio_lock);
3161
3162 return res;
3163 }
3164
3165 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3166 struct netlink_callback *cb)
3167 {
3168 int idx = cb->args[0];
3169 struct mac80211_hwsim_data *data = NULL;
3170 int res;
3171
3172 spin_lock_bh(&hwsim_radio_lock);
3173
3174 if (idx == hwsim_radio_idx)
3175 goto done;
3176
3177 list_for_each_entry(data, &hwsim_radios, list) {
3178 if (data->idx < idx)
3179 continue;
3180
3181 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3182 continue;
3183
3184 res = mac80211_hwsim_get_radio(skb, data,
3185 NETLINK_CB(cb->skb).portid,
3186 cb->nlh->nlmsg_seq, cb,
3187 NLM_F_MULTI);
3188 if (res < 0)
3189 break;
3190
3191 idx = data->idx + 1;
3192 }
3193
3194 cb->args[0] = idx;
3195
3196 done:
3197 spin_unlock_bh(&hwsim_radio_lock);
3198 return skb->len;
3199 }
3200
3201 /* Generic Netlink operations array */
3202 static const struct genl_ops hwsim_ops[] = {
3203 {
3204 .cmd = HWSIM_CMD_REGISTER,
3205 .policy = hwsim_genl_policy,
3206 .doit = hwsim_register_received_nl,
3207 .flags = GENL_UNS_ADMIN_PERM,
3208 },
3209 {
3210 .cmd = HWSIM_CMD_FRAME,
3211 .policy = hwsim_genl_policy,
3212 .doit = hwsim_cloned_frame_received_nl,
3213 },
3214 {
3215 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3216 .policy = hwsim_genl_policy,
3217 .doit = hwsim_tx_info_frame_received_nl,
3218 },
3219 {
3220 .cmd = HWSIM_CMD_NEW_RADIO,
3221 .policy = hwsim_genl_policy,
3222 .doit = hwsim_new_radio_nl,
3223 .flags = GENL_UNS_ADMIN_PERM,
3224 },
3225 {
3226 .cmd = HWSIM_CMD_DEL_RADIO,
3227 .policy = hwsim_genl_policy,
3228 .doit = hwsim_del_radio_nl,
3229 .flags = GENL_UNS_ADMIN_PERM,
3230 },
3231 {
3232 .cmd = HWSIM_CMD_GET_RADIO,
3233 .policy = hwsim_genl_policy,
3234 .doit = hwsim_get_radio_nl,
3235 .dumpit = hwsim_dump_radio_nl,
3236 },
3237 };
3238
3239 static void destroy_radio(struct work_struct *work)
3240 {
3241 struct mac80211_hwsim_data *data =
3242 container_of(work, struct mac80211_hwsim_data, destroy_work);
3243
3244 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3245 }
3246
3247 static void remove_user_radios(u32 portid)
3248 {
3249 struct mac80211_hwsim_data *entry, *tmp;
3250
3251 spin_lock_bh(&hwsim_radio_lock);
3252 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3253 if (entry->destroy_on_close && entry->portid == portid) {
3254 list_del(&entry->list);
3255 INIT_WORK(&entry->destroy_work, destroy_radio);
3256 schedule_work(&entry->destroy_work);
3257 }
3258 }
3259 spin_unlock_bh(&hwsim_radio_lock);
3260 }
3261
3262 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3263 unsigned long state,
3264 void *_notify)
3265 {
3266 struct netlink_notify *notify = _notify;
3267
3268 if (state != NETLINK_URELEASE)
3269 return NOTIFY_DONE;
3270
3271 remove_user_radios(notify->portid);
3272
3273 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3274 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3275 " socket, switching to perfect channel medium\n");
3276 hwsim_register_wmediumd(notify->net, 0);
3277 }
3278 return NOTIFY_DONE;
3279
3280 }
3281
3282 static struct notifier_block hwsim_netlink_notifier = {
3283 .notifier_call = mac80211_hwsim_netlink_notify,
3284 };
3285
3286 static int hwsim_init_netlink(void)
3287 {
3288 int rc;
3289
3290 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3291
3292 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3293 hwsim_ops,
3294 hwsim_mcgrps);
3295 if (rc)
3296 goto failure;
3297
3298 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3299 if (rc) {
3300 genl_unregister_family(&hwsim_genl_family);
3301 goto failure;
3302 }
3303
3304 return 0;
3305
3306 failure:
3307 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3308 return -EINVAL;
3309 }
3310
3311 static __net_init int hwsim_init_net(struct net *net)
3312 {
3313 hwsim_net_set_netgroup(net);
3314
3315 return 0;
3316 }
3317
3318 static void __net_exit hwsim_exit_net(struct net *net)
3319 {
3320 struct mac80211_hwsim_data *data, *tmp;
3321
3322 spin_lock_bh(&hwsim_radio_lock);
3323 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3324 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3325 continue;
3326
3327 /* Radios created in init_net are returned to init_net. */
3328 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3329 continue;
3330
3331 list_del(&data->list);
3332 INIT_WORK(&data->destroy_work, destroy_radio);
3333 schedule_work(&data->destroy_work);
3334 }
3335 spin_unlock_bh(&hwsim_radio_lock);
3336 }
3337
3338 static struct pernet_operations hwsim_net_ops = {
3339 .init = hwsim_init_net,
3340 .exit = hwsim_exit_net,
3341 .id = &hwsim_net_id,
3342 .size = sizeof(struct hwsim_net),
3343 };
3344
3345 static void hwsim_exit_netlink(void)
3346 {
3347 /* unregister the notifier */
3348 netlink_unregister_notifier(&hwsim_netlink_notifier);
3349 /* unregister the family */
3350 genl_unregister_family(&hwsim_genl_family);
3351 }
3352
3353 static int __init init_mac80211_hwsim(void)
3354 {
3355 int i, err;
3356
3357 if (radios < 0 || radios > 100)
3358 return -EINVAL;
3359
3360 if (channels < 1)
3361 return -EINVAL;
3362
3363 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3364 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3365 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3366 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3367 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3368 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3369 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3370 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3371 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3372 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3373 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3374 mac80211_hwsim_assign_vif_chanctx;
3375 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3376 mac80211_hwsim_unassign_vif_chanctx;
3377
3378 spin_lock_init(&hwsim_radio_lock);
3379 INIT_LIST_HEAD(&hwsim_radios);
3380
3381 err = register_pernet_device(&hwsim_net_ops);
3382 if (err)
3383 return err;
3384
3385 err = platform_driver_register(&mac80211_hwsim_driver);
3386 if (err)
3387 goto out_unregister_pernet;
3388
3389 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3390 if (IS_ERR(hwsim_class)) {
3391 err = PTR_ERR(hwsim_class);
3392 goto out_unregister_driver;
3393 }
3394
3395 err = hwsim_init_netlink();
3396 if (err < 0)
3397 goto out_unregister_driver;
3398
3399 for (i = 0; i < radios; i++) {
3400 struct hwsim_new_radio_params param = { 0 };
3401
3402 param.channels = channels;
3403
3404 switch (regtest) {
3405 case HWSIM_REGTEST_DIFF_COUNTRY:
3406 if (i < ARRAY_SIZE(hwsim_alpha2s))
3407 param.reg_alpha2 = hwsim_alpha2s[i];
3408 break;
3409 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3410 if (!i)
3411 param.reg_alpha2 = hwsim_alpha2s[0];
3412 break;
3413 case HWSIM_REGTEST_STRICT_ALL:
3414 param.reg_strict = true;
3415 case HWSIM_REGTEST_DRIVER_REG_ALL:
3416 param.reg_alpha2 = hwsim_alpha2s[0];
3417 break;
3418 case HWSIM_REGTEST_WORLD_ROAM:
3419 if (i == 0)
3420 param.regd = &hwsim_world_regdom_custom_01;
3421 break;
3422 case HWSIM_REGTEST_CUSTOM_WORLD:
3423 param.regd = &hwsim_world_regdom_custom_01;
3424 break;
3425 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3426 if (i == 0)
3427 param.regd = &hwsim_world_regdom_custom_01;
3428 else if (i == 1)
3429 param.regd = &hwsim_world_regdom_custom_02;
3430 break;
3431 case HWSIM_REGTEST_STRICT_FOLLOW:
3432 if (i == 0) {
3433 param.reg_strict = true;
3434 param.reg_alpha2 = hwsim_alpha2s[0];
3435 }
3436 break;
3437 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3438 if (i == 0) {
3439 param.reg_strict = true;
3440 param.reg_alpha2 = hwsim_alpha2s[0];
3441 } else if (i == 1) {
3442 param.reg_alpha2 = hwsim_alpha2s[1];
3443 }
3444 break;
3445 case HWSIM_REGTEST_ALL:
3446 switch (i) {
3447 case 0:
3448 param.regd = &hwsim_world_regdom_custom_01;
3449 break;
3450 case 1:
3451 param.regd = &hwsim_world_regdom_custom_02;
3452 break;
3453 case 2:
3454 param.reg_alpha2 = hwsim_alpha2s[0];
3455 break;
3456 case 3:
3457 param.reg_alpha2 = hwsim_alpha2s[1];
3458 break;
3459 case 4:
3460 param.reg_strict = true;
3461 param.reg_alpha2 = hwsim_alpha2s[2];
3462 break;
3463 }
3464 break;
3465 default:
3466 break;
3467 }
3468
3469 param.p2p_device = support_p2p_device;
3470 param.use_chanctx = channels > 1;
3471
3472 err = mac80211_hwsim_new_radio(NULL, &param);
3473 if (err < 0)
3474 goto out_free_radios;
3475 }
3476
3477 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3478 hwsim_mon_setup);
3479 if (hwsim_mon == NULL) {
3480 err = -ENOMEM;
3481 goto out_free_radios;
3482 }
3483
3484 rtnl_lock();
3485 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3486 if (err < 0) {
3487 rtnl_unlock();
3488 goto out_free_radios;
3489 }
3490
3491 err = register_netdevice(hwsim_mon);
3492 if (err < 0) {
3493 rtnl_unlock();
3494 goto out_free_mon;
3495 }
3496 rtnl_unlock();
3497
3498 return 0;
3499
3500 out_free_mon:
3501 free_netdev(hwsim_mon);
3502 out_free_radios:
3503 mac80211_hwsim_free();
3504 out_unregister_driver:
3505 platform_driver_unregister(&mac80211_hwsim_driver);
3506 out_unregister_pernet:
3507 unregister_pernet_device(&hwsim_net_ops);
3508 return err;
3509 }
3510 module_init(init_mac80211_hwsim);
3511
3512 static void __exit exit_mac80211_hwsim(void)
3513 {
3514 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3515
3516 hwsim_exit_netlink();
3517
3518 mac80211_hwsim_free();
3519 unregister_netdev(hwsim_mon);
3520 platform_driver_unregister(&mac80211_hwsim_driver);
3521 unregister_pernet_device(&hwsim_net_ops);
3522 }
3523 module_exit(exit_mac80211_hwsim);
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