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[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/platform_device.h>
29 #include <linux/debugfs.h>
30 #include <linux/module.h>
31 #include <linux/ktime.h>
32 #include <net/genetlink.h>
33 #include <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 unsigned 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 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 netlink family */
591 static struct genl_family hwsim_genl_family;
592
593 enum hwsim_multicast_groups {
594 HWSIM_MCGRP_CONFIG,
595 };
596
597 static const struct genl_multicast_group hwsim_mcgrps[] = {
598 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
599 };
600
601 /* MAC80211_HWSIM netlink policy */
602
603 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
604 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
605 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
606 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
607 .len = IEEE80211_MAX_DATA_LEN },
608 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
609 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
610 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
611 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
612 .len = IEEE80211_TX_MAX_RATES *
613 sizeof(struct hwsim_tx_rate)},
614 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
615 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
616 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
617 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
618 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
619 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
620 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
621 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
622 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
623 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
624 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
625 };
626
627 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
628 struct sk_buff *skb,
629 struct ieee80211_channel *chan);
630
631 /* sysfs attributes */
632 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
633 {
634 struct mac80211_hwsim_data *data = dat;
635 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
636 struct sk_buff *skb;
637 struct ieee80211_pspoll *pspoll;
638
639 if (!vp->assoc)
640 return;
641
642 wiphy_debug(data->hw->wiphy,
643 "%s: send PS-Poll to %pM for aid %d\n",
644 __func__, vp->bssid, vp->aid);
645
646 skb = dev_alloc_skb(sizeof(*pspoll));
647 if (!skb)
648 return;
649 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
650 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
651 IEEE80211_STYPE_PSPOLL |
652 IEEE80211_FCTL_PM);
653 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
654 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
655 memcpy(pspoll->ta, mac, ETH_ALEN);
656
657 rcu_read_lock();
658 mac80211_hwsim_tx_frame(data->hw, skb,
659 rcu_dereference(vif->chanctx_conf)->def.chan);
660 rcu_read_unlock();
661 }
662
663 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
664 struct ieee80211_vif *vif, int ps)
665 {
666 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
667 struct sk_buff *skb;
668 struct ieee80211_hdr *hdr;
669
670 if (!vp->assoc)
671 return;
672
673 wiphy_debug(data->hw->wiphy,
674 "%s: send data::nullfunc to %pM ps=%d\n",
675 __func__, vp->bssid, ps);
676
677 skb = dev_alloc_skb(sizeof(*hdr));
678 if (!skb)
679 return;
680 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
681 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
682 IEEE80211_STYPE_NULLFUNC |
683 (ps ? IEEE80211_FCTL_PM : 0));
684 hdr->duration_id = cpu_to_le16(0);
685 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
686 memcpy(hdr->addr2, mac, ETH_ALEN);
687 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
688
689 rcu_read_lock();
690 mac80211_hwsim_tx_frame(data->hw, skb,
691 rcu_dereference(vif->chanctx_conf)->def.chan);
692 rcu_read_unlock();
693 }
694
695
696 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
697 struct ieee80211_vif *vif)
698 {
699 struct mac80211_hwsim_data *data = dat;
700 hwsim_send_nullfunc(data, mac, vif, 1);
701 }
702
703 static void hwsim_send_nullfunc_no_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, 0);
708 }
709
710 static int hwsim_fops_ps_read(void *dat, u64 *val)
711 {
712 struct mac80211_hwsim_data *data = dat;
713 *val = data->ps;
714 return 0;
715 }
716
717 static int hwsim_fops_ps_write(void *dat, u64 val)
718 {
719 struct mac80211_hwsim_data *data = dat;
720 enum ps_mode old_ps;
721
722 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
723 val != PS_MANUAL_POLL)
724 return -EINVAL;
725
726 old_ps = data->ps;
727 data->ps = val;
728
729 local_bh_disable();
730 if (val == PS_MANUAL_POLL) {
731 ieee80211_iterate_active_interfaces_atomic(
732 data->hw, IEEE80211_IFACE_ITER_NORMAL,
733 hwsim_send_ps_poll, data);
734 data->ps_poll_pending = true;
735 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
736 ieee80211_iterate_active_interfaces_atomic(
737 data->hw, IEEE80211_IFACE_ITER_NORMAL,
738 hwsim_send_nullfunc_ps, data);
739 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
740 ieee80211_iterate_active_interfaces_atomic(
741 data->hw, IEEE80211_IFACE_ITER_NORMAL,
742 hwsim_send_nullfunc_no_ps, data);
743 }
744 local_bh_enable();
745
746 return 0;
747 }
748
749 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
750 "%llu\n");
751
752 static int hwsim_write_simulate_radar(void *dat, u64 val)
753 {
754 struct mac80211_hwsim_data *data = dat;
755
756 ieee80211_radar_detected(data->hw);
757
758 return 0;
759 }
760
761 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
762 hwsim_write_simulate_radar, "%llu\n");
763
764 static int hwsim_fops_group_read(void *dat, u64 *val)
765 {
766 struct mac80211_hwsim_data *data = dat;
767 *val = data->group;
768 return 0;
769 }
770
771 static int hwsim_fops_group_write(void *dat, u64 val)
772 {
773 struct mac80211_hwsim_data *data = dat;
774 data->group = val;
775 return 0;
776 }
777
778 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
779 hwsim_fops_group_read, hwsim_fops_group_write,
780 "%llx\n");
781
782 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
783 struct net_device *dev)
784 {
785 /* TODO: allow packet injection */
786 dev_kfree_skb(skb);
787 return NETDEV_TX_OK;
788 }
789
790 static inline u64 mac80211_hwsim_get_tsf_raw(void)
791 {
792 return ktime_to_us(ktime_get_real());
793 }
794
795 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
796 {
797 u64 now = mac80211_hwsim_get_tsf_raw();
798 return cpu_to_le64(now + data->tsf_offset);
799 }
800
801 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
802 struct ieee80211_vif *vif)
803 {
804 struct mac80211_hwsim_data *data = hw->priv;
805 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
806 }
807
808 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
809 struct ieee80211_vif *vif, u64 tsf)
810 {
811 struct mac80211_hwsim_data *data = hw->priv;
812 u64 now = mac80211_hwsim_get_tsf(hw, vif);
813 u32 bcn_int = data->beacon_int;
814 u64 delta = abs(tsf - now);
815
816 /* adjust after beaconing with new timestamp at old TBTT */
817 if (tsf > now) {
818 data->tsf_offset += delta;
819 data->bcn_delta = do_div(delta, bcn_int);
820 } else {
821 data->tsf_offset -= delta;
822 data->bcn_delta = -(s64)do_div(delta, bcn_int);
823 }
824 }
825
826 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
827 struct sk_buff *tx_skb,
828 struct ieee80211_channel *chan)
829 {
830 struct mac80211_hwsim_data *data = hw->priv;
831 struct sk_buff *skb;
832 struct hwsim_radiotap_hdr *hdr;
833 u16 flags;
834 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
835 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
836
837 if (WARN_ON(!txrate))
838 return;
839
840 if (!netif_running(hwsim_mon))
841 return;
842
843 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
844 if (skb == NULL)
845 return;
846
847 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
848 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
849 hdr->hdr.it_pad = 0;
850 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
851 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
852 (1 << IEEE80211_RADIOTAP_RATE) |
853 (1 << IEEE80211_RADIOTAP_TSFT) |
854 (1 << IEEE80211_RADIOTAP_CHANNEL));
855 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
856 hdr->rt_flags = 0;
857 hdr->rt_rate = txrate->bitrate / 5;
858 hdr->rt_channel = cpu_to_le16(chan->center_freq);
859 flags = IEEE80211_CHAN_2GHZ;
860 if (txrate->flags & IEEE80211_RATE_ERP_G)
861 flags |= IEEE80211_CHAN_OFDM;
862 else
863 flags |= IEEE80211_CHAN_CCK;
864 hdr->rt_chbitmask = cpu_to_le16(flags);
865
866 skb->dev = hwsim_mon;
867 skb_reset_mac_header(skb);
868 skb->ip_summed = CHECKSUM_UNNECESSARY;
869 skb->pkt_type = PACKET_OTHERHOST;
870 skb->protocol = htons(ETH_P_802_2);
871 memset(skb->cb, 0, sizeof(skb->cb));
872 netif_rx(skb);
873 }
874
875
876 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
877 const u8 *addr)
878 {
879 struct sk_buff *skb;
880 struct hwsim_radiotap_ack_hdr *hdr;
881 u16 flags;
882 struct ieee80211_hdr *hdr11;
883
884 if (!netif_running(hwsim_mon))
885 return;
886
887 skb = dev_alloc_skb(100);
888 if (skb == NULL)
889 return;
890
891 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
892 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
893 hdr->hdr.it_pad = 0;
894 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
895 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
896 (1 << IEEE80211_RADIOTAP_CHANNEL));
897 hdr->rt_flags = 0;
898 hdr->pad = 0;
899 hdr->rt_channel = cpu_to_le16(chan->center_freq);
900 flags = IEEE80211_CHAN_2GHZ;
901 hdr->rt_chbitmask = cpu_to_le16(flags);
902
903 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
904 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
905 IEEE80211_STYPE_ACK);
906 hdr11->duration_id = cpu_to_le16(0);
907 memcpy(hdr11->addr1, addr, ETH_ALEN);
908
909 skb->dev = hwsim_mon;
910 skb_reset_mac_header(skb);
911 skb->ip_summed = CHECKSUM_UNNECESSARY;
912 skb->pkt_type = PACKET_OTHERHOST;
913 skb->protocol = htons(ETH_P_802_2);
914 memset(skb->cb, 0, sizeof(skb->cb));
915 netif_rx(skb);
916 }
917
918 struct mac80211_hwsim_addr_match_data {
919 u8 addr[ETH_ALEN];
920 bool ret;
921 };
922
923 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
924 struct ieee80211_vif *vif)
925 {
926 struct mac80211_hwsim_addr_match_data *md = data;
927
928 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
929 md->ret = true;
930 }
931
932 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
933 const u8 *addr)
934 {
935 struct mac80211_hwsim_addr_match_data md = {
936 .ret = false,
937 };
938
939 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
940 return true;
941
942 memcpy(md.addr, addr, ETH_ALEN);
943
944 ieee80211_iterate_active_interfaces_atomic(data->hw,
945 IEEE80211_IFACE_ITER_NORMAL,
946 mac80211_hwsim_addr_iter,
947 &md);
948
949 return md.ret;
950 }
951
952 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
953 struct sk_buff *skb)
954 {
955 switch (data->ps) {
956 case PS_DISABLED:
957 return true;
958 case PS_ENABLED:
959 return false;
960 case PS_AUTO_POLL:
961 /* TODO: accept (some) Beacons by default and other frames only
962 * if pending PS-Poll has been sent */
963 return true;
964 case PS_MANUAL_POLL:
965 /* Allow unicast frames to own address if there is a pending
966 * PS-Poll */
967 if (data->ps_poll_pending &&
968 mac80211_hwsim_addr_match(data, skb->data + 4)) {
969 data->ps_poll_pending = false;
970 return true;
971 }
972 return false;
973 }
974
975 return true;
976 }
977
978 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
979 struct sk_buff *skb, int portid)
980 {
981 struct net *net;
982 bool found = false;
983 int res = -ENOENT;
984
985 rcu_read_lock();
986 for_each_net_rcu(net) {
987 if (data->netgroup == hwsim_net_get_netgroup(net)) {
988 res = genlmsg_unicast(net, skb, portid);
989 found = true;
990 break;
991 }
992 }
993 rcu_read_unlock();
994
995 if (!found)
996 nlmsg_free(skb);
997
998 return res;
999 }
1000
1001 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1002 struct sk_buff *my_skb,
1003 int dst_portid)
1004 {
1005 struct sk_buff *skb;
1006 struct mac80211_hwsim_data *data = hw->priv;
1007 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1008 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1009 void *msg_head;
1010 unsigned int hwsim_flags = 0;
1011 int i;
1012 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1013 uintptr_t cookie;
1014
1015 if (data->ps != PS_DISABLED)
1016 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1017 /* If the queue contains MAX_QUEUE skb's drop some */
1018 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1019 /* Droping until WARN_QUEUE level */
1020 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1021 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1022 data->tx_dropped++;
1023 }
1024 }
1025
1026 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1027 if (skb == NULL)
1028 goto nla_put_failure;
1029
1030 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1031 HWSIM_CMD_FRAME);
1032 if (msg_head == NULL) {
1033 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1034 goto nla_put_failure;
1035 }
1036
1037 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1038 ETH_ALEN, data->addresses[1].addr))
1039 goto nla_put_failure;
1040
1041 /* We get the skb->data */
1042 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1043 goto nla_put_failure;
1044
1045 /* We get the flags for this transmission, and we translate them to
1046 wmediumd flags */
1047
1048 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1049 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1050
1051 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1052 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1053
1054 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1055 goto nla_put_failure;
1056
1057 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1058 goto nla_put_failure;
1059
1060 /* We get the tx control (rate and retries) info*/
1061
1062 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1063 tx_attempts[i].idx = info->status.rates[i].idx;
1064 tx_attempts[i].count = info->status.rates[i].count;
1065 }
1066
1067 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1068 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1069 tx_attempts))
1070 goto nla_put_failure;
1071
1072 /* We create a cookie to identify this skb */
1073 data->pending_cookie++;
1074 cookie = data->pending_cookie;
1075 info->rate_driver_data[0] = (void *)cookie;
1076 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1077 goto nla_put_failure;
1078
1079 genlmsg_end(skb, msg_head);
1080 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1081 goto err_free_txskb;
1082
1083 /* Enqueue the packet */
1084 skb_queue_tail(&data->pending, my_skb);
1085 data->tx_pkts++;
1086 data->tx_bytes += my_skb->len;
1087 return;
1088
1089 nla_put_failure:
1090 nlmsg_free(skb);
1091 err_free_txskb:
1092 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1093 ieee80211_free_txskb(hw, my_skb);
1094 data->tx_failed++;
1095 }
1096
1097 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1098 struct ieee80211_channel *c2)
1099 {
1100 if (!c1 || !c2)
1101 return false;
1102
1103 return c1->center_freq == c2->center_freq;
1104 }
1105
1106 struct tx_iter_data {
1107 struct ieee80211_channel *channel;
1108 bool receive;
1109 };
1110
1111 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1112 struct ieee80211_vif *vif)
1113 {
1114 struct tx_iter_data *data = _data;
1115
1116 if (!vif->chanctx_conf)
1117 return;
1118
1119 if (!hwsim_chans_compat(data->channel,
1120 rcu_dereference(vif->chanctx_conf)->def.chan))
1121 return;
1122
1123 data->receive = true;
1124 }
1125
1126 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1127 {
1128 /*
1129 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1130 * e.g. like this:
1131 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1132 * (but you should use a valid OUI, not that)
1133 *
1134 * If anyone wants to 'donate' a radiotap OUI/subns code
1135 * please send a patch removing this #ifdef and changing
1136 * the values accordingly.
1137 */
1138 #ifdef HWSIM_RADIOTAP_OUI
1139 struct ieee80211_vendor_radiotap *rtap;
1140
1141 /*
1142 * Note that this code requires the headroom in the SKB
1143 * that was allocated earlier.
1144 */
1145 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1146 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1147 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1148 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1149 rtap->subns = 127;
1150
1151 /*
1152 * Radiotap vendor namespaces can (and should) also be
1153 * split into fields by using the standard radiotap
1154 * presence bitmap mechanism. Use just BIT(0) here for
1155 * the presence bitmap.
1156 */
1157 rtap->present = BIT(0);
1158 /* We have 8 bytes of (dummy) data */
1159 rtap->len = 8;
1160 /* For testing, also require it to be aligned */
1161 rtap->align = 8;
1162 /* And also test that padding works, 4 bytes */
1163 rtap->pad = 4;
1164 /* push the data */
1165 memcpy(rtap->data, "ABCDEFGH", 8);
1166 /* make sure to clear padding, mac80211 doesn't */
1167 memset(rtap->data + 8, 0, 4);
1168
1169 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1170 #endif
1171 }
1172
1173 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1174 struct sk_buff *skb,
1175 struct ieee80211_channel *chan)
1176 {
1177 struct mac80211_hwsim_data *data = hw->priv, *data2;
1178 bool ack = false;
1179 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1180 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1181 struct ieee80211_rx_status rx_status;
1182 u64 now;
1183
1184 memset(&rx_status, 0, sizeof(rx_status));
1185 rx_status.flag |= RX_FLAG_MACTIME_START;
1186 rx_status.freq = chan->center_freq;
1187 rx_status.band = chan->band;
1188 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1189 rx_status.rate_idx =
1190 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1191 rx_status.vht_nss =
1192 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1193 rx_status.flag |= RX_FLAG_VHT;
1194 } else {
1195 rx_status.rate_idx = info->control.rates[0].idx;
1196 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1197 rx_status.flag |= RX_FLAG_HT;
1198 }
1199 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1200 rx_status.flag |= RX_FLAG_40MHZ;
1201 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1202 rx_status.flag |= RX_FLAG_SHORT_GI;
1203 /* TODO: simulate real signal strength (and optional packet loss) */
1204 rx_status.signal = data->power_level - 50;
1205
1206 if (data->ps != PS_DISABLED)
1207 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1208
1209 /* release the skb's source info */
1210 skb_orphan(skb);
1211 skb_dst_drop(skb);
1212 skb->mark = 0;
1213 secpath_reset(skb);
1214 nf_reset(skb);
1215
1216 /*
1217 * Get absolute mactime here so all HWs RX at the "same time", and
1218 * absolute TX time for beacon mactime so the timestamp matches.
1219 * Giving beacons a different mactime than non-beacons looks messy, but
1220 * it helps the Toffset be exact and a ~10us mactime discrepancy
1221 * probably doesn't really matter.
1222 */
1223 if (ieee80211_is_beacon(hdr->frame_control) ||
1224 ieee80211_is_probe_resp(hdr->frame_control))
1225 now = data->abs_bcn_ts;
1226 else
1227 now = mac80211_hwsim_get_tsf_raw();
1228
1229 /* Copy skb to all enabled radios that are on the current frequency */
1230 spin_lock(&hwsim_radio_lock);
1231 list_for_each_entry(data2, &hwsim_radios, list) {
1232 struct sk_buff *nskb;
1233 struct tx_iter_data tx_iter_data = {
1234 .receive = false,
1235 .channel = chan,
1236 };
1237
1238 if (data == data2)
1239 continue;
1240
1241 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1242 !hwsim_ps_rx_ok(data2, skb))
1243 continue;
1244
1245 if (!(data->group & data2->group))
1246 continue;
1247
1248 if (data->netgroup != data2->netgroup)
1249 continue;
1250
1251 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1252 !hwsim_chans_compat(chan, data2->channel)) {
1253 ieee80211_iterate_active_interfaces_atomic(
1254 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1255 mac80211_hwsim_tx_iter, &tx_iter_data);
1256 if (!tx_iter_data.receive)
1257 continue;
1258 }
1259
1260 /*
1261 * reserve some space for our vendor and the normal
1262 * radiotap header, since we're copying anyway
1263 */
1264 if (skb->len < PAGE_SIZE && paged_rx) {
1265 struct page *page = alloc_page(GFP_ATOMIC);
1266
1267 if (!page)
1268 continue;
1269
1270 nskb = dev_alloc_skb(128);
1271 if (!nskb) {
1272 __free_page(page);
1273 continue;
1274 }
1275
1276 memcpy(page_address(page), skb->data, skb->len);
1277 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1278 } else {
1279 nskb = skb_copy(skb, GFP_ATOMIC);
1280 if (!nskb)
1281 continue;
1282 }
1283
1284 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1285 ack = true;
1286
1287 rx_status.mactime = now + data2->tsf_offset;
1288
1289 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1290
1291 mac80211_hwsim_add_vendor_rtap(nskb);
1292
1293 data2->rx_pkts++;
1294 data2->rx_bytes += nskb->len;
1295 ieee80211_rx_irqsafe(data2->hw, nskb);
1296 }
1297 spin_unlock(&hwsim_radio_lock);
1298
1299 return ack;
1300 }
1301
1302 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1303 struct ieee80211_tx_control *control,
1304 struct sk_buff *skb)
1305 {
1306 struct mac80211_hwsim_data *data = hw->priv;
1307 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1308 struct ieee80211_hdr *hdr = (void *)skb->data;
1309 struct ieee80211_chanctx_conf *chanctx_conf;
1310 struct ieee80211_channel *channel;
1311 bool ack;
1312 u32 _portid;
1313
1314 if (WARN_ON(skb->len < 10)) {
1315 /* Should not happen; just a sanity check for addr1 use */
1316 ieee80211_free_txskb(hw, skb);
1317 return;
1318 }
1319
1320 if (!data->use_chanctx) {
1321 channel = data->channel;
1322 } else if (txi->hw_queue == 4) {
1323 channel = data->tmp_chan;
1324 } else {
1325 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1326 if (chanctx_conf)
1327 channel = chanctx_conf->def.chan;
1328 else
1329 channel = NULL;
1330 }
1331
1332 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1333 ieee80211_free_txskb(hw, skb);
1334 return;
1335 }
1336
1337 if (data->idle && !data->tmp_chan) {
1338 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1339 ieee80211_free_txskb(hw, skb);
1340 return;
1341 }
1342
1343 if (txi->control.vif)
1344 hwsim_check_magic(txi->control.vif);
1345 if (control->sta)
1346 hwsim_check_sta_magic(control->sta);
1347
1348 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1349 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1350 txi->control.rates,
1351 ARRAY_SIZE(txi->control.rates));
1352
1353 txi->rate_driver_data[0] = channel;
1354
1355 if (skb->len >= 24 + 8 &&
1356 ieee80211_is_probe_resp(hdr->frame_control)) {
1357 /* fake header transmission time */
1358 struct ieee80211_mgmt *mgmt;
1359 struct ieee80211_rate *txrate;
1360 u64 ts;
1361
1362 mgmt = (struct ieee80211_mgmt *)skb->data;
1363 txrate = ieee80211_get_tx_rate(hw, txi);
1364 ts = mac80211_hwsim_get_tsf_raw();
1365 mgmt->u.probe_resp.timestamp =
1366 cpu_to_le64(ts + data->tsf_offset +
1367 24 * 8 * 10 / txrate->bitrate);
1368 }
1369
1370 mac80211_hwsim_monitor_rx(hw, skb, channel);
1371
1372 /* wmediumd mode check */
1373 _portid = ACCESS_ONCE(data->wmediumd);
1374
1375 if (_portid)
1376 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1377
1378 /* NO wmediumd detected, perfect medium simulation */
1379 data->tx_pkts++;
1380 data->tx_bytes += skb->len;
1381 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1382
1383 if (ack && skb->len >= 16)
1384 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1385
1386 ieee80211_tx_info_clear_status(txi);
1387
1388 /* frame was transmitted at most favorable rate at first attempt */
1389 txi->control.rates[0].count = 1;
1390 txi->control.rates[1].idx = -1;
1391
1392 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1393 txi->flags |= IEEE80211_TX_STAT_ACK;
1394 ieee80211_tx_status_irqsafe(hw, skb);
1395 }
1396
1397
1398 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1399 {
1400 struct mac80211_hwsim_data *data = hw->priv;
1401 wiphy_debug(hw->wiphy, "%s\n", __func__);
1402 data->started = true;
1403 return 0;
1404 }
1405
1406
1407 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1408 {
1409 struct mac80211_hwsim_data *data = hw->priv;
1410 data->started = false;
1411 tasklet_hrtimer_cancel(&data->beacon_timer);
1412 wiphy_debug(hw->wiphy, "%s\n", __func__);
1413 }
1414
1415
1416 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1417 struct ieee80211_vif *vif)
1418 {
1419 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1420 __func__, ieee80211_vif_type_p2p(vif),
1421 vif->addr);
1422 hwsim_set_magic(vif);
1423
1424 vif->cab_queue = 0;
1425 vif->hw_queue[IEEE80211_AC_VO] = 0;
1426 vif->hw_queue[IEEE80211_AC_VI] = 1;
1427 vif->hw_queue[IEEE80211_AC_BE] = 2;
1428 vif->hw_queue[IEEE80211_AC_BK] = 3;
1429
1430 return 0;
1431 }
1432
1433
1434 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1435 struct ieee80211_vif *vif,
1436 enum nl80211_iftype newtype,
1437 bool newp2p)
1438 {
1439 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1440 wiphy_debug(hw->wiphy,
1441 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1442 __func__, ieee80211_vif_type_p2p(vif),
1443 newtype, vif->addr);
1444 hwsim_check_magic(vif);
1445
1446 /*
1447 * interface may change from non-AP to AP in
1448 * which case this needs to be set up again
1449 */
1450 vif->cab_queue = 0;
1451
1452 return 0;
1453 }
1454
1455 static void mac80211_hwsim_remove_interface(
1456 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1457 {
1458 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1459 __func__, ieee80211_vif_type_p2p(vif),
1460 vif->addr);
1461 hwsim_check_magic(vif);
1462 hwsim_clear_magic(vif);
1463 }
1464
1465 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1466 struct sk_buff *skb,
1467 struct ieee80211_channel *chan)
1468 {
1469 struct mac80211_hwsim_data *data = hw->priv;
1470 u32 _pid = ACCESS_ONCE(data->wmediumd);
1471
1472 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1473 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1474 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1475 txi->control.rates,
1476 ARRAY_SIZE(txi->control.rates));
1477 }
1478
1479 mac80211_hwsim_monitor_rx(hw, skb, chan);
1480
1481 if (_pid)
1482 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1483
1484 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1485 dev_kfree_skb(skb);
1486 }
1487
1488 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1489 struct ieee80211_vif *vif)
1490 {
1491 struct mac80211_hwsim_data *data = arg;
1492 struct ieee80211_hw *hw = data->hw;
1493 struct ieee80211_tx_info *info;
1494 struct ieee80211_rate *txrate;
1495 struct ieee80211_mgmt *mgmt;
1496 struct sk_buff *skb;
1497
1498 hwsim_check_magic(vif);
1499
1500 if (vif->type != NL80211_IFTYPE_AP &&
1501 vif->type != NL80211_IFTYPE_MESH_POINT &&
1502 vif->type != NL80211_IFTYPE_ADHOC)
1503 return;
1504
1505 skb = ieee80211_beacon_get(hw, vif);
1506 if (skb == NULL)
1507 return;
1508 info = IEEE80211_SKB_CB(skb);
1509 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1510 ieee80211_get_tx_rates(vif, NULL, skb,
1511 info->control.rates,
1512 ARRAY_SIZE(info->control.rates));
1513
1514 txrate = ieee80211_get_tx_rate(hw, info);
1515
1516 mgmt = (struct ieee80211_mgmt *) skb->data;
1517 /* fake header transmission time */
1518 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1519 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1520 data->tsf_offset +
1521 24 * 8 * 10 / txrate->bitrate);
1522
1523 mac80211_hwsim_tx_frame(hw, skb,
1524 rcu_dereference(vif->chanctx_conf)->def.chan);
1525
1526 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1527 ieee80211_csa_finish(vif);
1528 }
1529
1530 static enum hrtimer_restart
1531 mac80211_hwsim_beacon(struct hrtimer *timer)
1532 {
1533 struct mac80211_hwsim_data *data =
1534 container_of(timer, struct mac80211_hwsim_data,
1535 beacon_timer.timer);
1536 struct ieee80211_hw *hw = data->hw;
1537 u64 bcn_int = data->beacon_int;
1538 ktime_t next_bcn;
1539
1540 if (!data->started)
1541 goto out;
1542
1543 ieee80211_iterate_active_interfaces_atomic(
1544 hw, IEEE80211_IFACE_ITER_NORMAL,
1545 mac80211_hwsim_beacon_tx, data);
1546
1547 /* beacon at new TBTT + beacon interval */
1548 if (data->bcn_delta) {
1549 bcn_int -= data->bcn_delta;
1550 data->bcn_delta = 0;
1551 }
1552
1553 next_bcn = ktime_add(hrtimer_get_expires(timer),
1554 ns_to_ktime(bcn_int * 1000));
1555 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1556 out:
1557 return HRTIMER_NORESTART;
1558 }
1559
1560 static const char * const hwsim_chanwidths[] = {
1561 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1562 [NL80211_CHAN_WIDTH_20] = "ht20",
1563 [NL80211_CHAN_WIDTH_40] = "ht40",
1564 [NL80211_CHAN_WIDTH_80] = "vht80",
1565 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1566 [NL80211_CHAN_WIDTH_160] = "vht160",
1567 };
1568
1569 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1570 {
1571 struct mac80211_hwsim_data *data = hw->priv;
1572 struct ieee80211_conf *conf = &hw->conf;
1573 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1574 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1575 [IEEE80211_SMPS_OFF] = "off",
1576 [IEEE80211_SMPS_STATIC] = "static",
1577 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1578 };
1579
1580 if (conf->chandef.chan)
1581 wiphy_debug(hw->wiphy,
1582 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1583 __func__,
1584 conf->chandef.chan->center_freq,
1585 conf->chandef.center_freq1,
1586 conf->chandef.center_freq2,
1587 hwsim_chanwidths[conf->chandef.width],
1588 !!(conf->flags & IEEE80211_CONF_IDLE),
1589 !!(conf->flags & IEEE80211_CONF_PS),
1590 smps_modes[conf->smps_mode]);
1591 else
1592 wiphy_debug(hw->wiphy,
1593 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1594 __func__,
1595 !!(conf->flags & IEEE80211_CONF_IDLE),
1596 !!(conf->flags & IEEE80211_CONF_PS),
1597 smps_modes[conf->smps_mode]);
1598
1599 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1600
1601 data->channel = conf->chandef.chan;
1602
1603 WARN_ON(data->channel && data->use_chanctx);
1604
1605 data->power_level = conf->power_level;
1606 if (!data->started || !data->beacon_int)
1607 tasklet_hrtimer_cancel(&data->beacon_timer);
1608 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1609 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1610 u32 bcn_int = data->beacon_int;
1611 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1612
1613 tasklet_hrtimer_start(&data->beacon_timer,
1614 ns_to_ktime(until_tbtt * 1000),
1615 HRTIMER_MODE_REL);
1616 }
1617
1618 return 0;
1619 }
1620
1621
1622 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1623 unsigned int changed_flags,
1624 unsigned int *total_flags,u64 multicast)
1625 {
1626 struct mac80211_hwsim_data *data = hw->priv;
1627
1628 wiphy_debug(hw->wiphy, "%s\n", __func__);
1629
1630 data->rx_filter = 0;
1631 if (*total_flags & FIF_ALLMULTI)
1632 data->rx_filter |= FIF_ALLMULTI;
1633
1634 *total_flags = data->rx_filter;
1635 }
1636
1637 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1638 struct ieee80211_vif *vif)
1639 {
1640 unsigned int *count = data;
1641 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1642
1643 if (vp->bcn_en)
1644 (*count)++;
1645 }
1646
1647 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1648 struct ieee80211_vif *vif,
1649 struct ieee80211_bss_conf *info,
1650 u32 changed)
1651 {
1652 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1653 struct mac80211_hwsim_data *data = hw->priv;
1654
1655 hwsim_check_magic(vif);
1656
1657 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1658 __func__, changed, vif->addr);
1659
1660 if (changed & BSS_CHANGED_BSSID) {
1661 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1662 __func__, info->bssid);
1663 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1664 }
1665
1666 if (changed & BSS_CHANGED_ASSOC) {
1667 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1668 info->assoc, info->aid);
1669 vp->assoc = info->assoc;
1670 vp->aid = info->aid;
1671 }
1672
1673 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1674 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1675 info->enable_beacon, info->beacon_int);
1676 vp->bcn_en = info->enable_beacon;
1677 if (data->started &&
1678 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1679 info->enable_beacon) {
1680 u64 tsf, until_tbtt;
1681 u32 bcn_int;
1682 data->beacon_int = info->beacon_int * 1024;
1683 tsf = mac80211_hwsim_get_tsf(hw, vif);
1684 bcn_int = data->beacon_int;
1685 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1686 tasklet_hrtimer_start(&data->beacon_timer,
1687 ns_to_ktime(until_tbtt * 1000),
1688 HRTIMER_MODE_REL);
1689 } else if (!info->enable_beacon) {
1690 unsigned int count = 0;
1691 ieee80211_iterate_active_interfaces_atomic(
1692 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1693 mac80211_hwsim_bcn_en_iter, &count);
1694 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1695 count);
1696 if (count == 0) {
1697 tasklet_hrtimer_cancel(&data->beacon_timer);
1698 data->beacon_int = 0;
1699 }
1700 }
1701 }
1702
1703 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1704 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1705 info->use_cts_prot);
1706 }
1707
1708 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1709 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1710 info->use_short_preamble);
1711 }
1712
1713 if (changed & BSS_CHANGED_ERP_SLOT) {
1714 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1715 }
1716
1717 if (changed & BSS_CHANGED_HT) {
1718 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1719 info->ht_operation_mode);
1720 }
1721
1722 if (changed & BSS_CHANGED_BASIC_RATES) {
1723 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1724 (unsigned long long) info->basic_rates);
1725 }
1726
1727 if (changed & BSS_CHANGED_TXPOWER)
1728 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1729 }
1730
1731 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1732 struct ieee80211_vif *vif,
1733 struct ieee80211_sta *sta)
1734 {
1735 hwsim_check_magic(vif);
1736 hwsim_set_sta_magic(sta);
1737
1738 return 0;
1739 }
1740
1741 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1742 struct ieee80211_vif *vif,
1743 struct ieee80211_sta *sta)
1744 {
1745 hwsim_check_magic(vif);
1746 hwsim_clear_sta_magic(sta);
1747
1748 return 0;
1749 }
1750
1751 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1752 struct ieee80211_vif *vif,
1753 enum sta_notify_cmd cmd,
1754 struct ieee80211_sta *sta)
1755 {
1756 hwsim_check_magic(vif);
1757
1758 switch (cmd) {
1759 case STA_NOTIFY_SLEEP:
1760 case STA_NOTIFY_AWAKE:
1761 /* TODO: make good use of these flags */
1762 break;
1763 default:
1764 WARN(1, "Invalid sta notify: %d\n", cmd);
1765 break;
1766 }
1767 }
1768
1769 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1770 struct ieee80211_sta *sta,
1771 bool set)
1772 {
1773 hwsim_check_sta_magic(sta);
1774 return 0;
1775 }
1776
1777 static int mac80211_hwsim_conf_tx(
1778 struct ieee80211_hw *hw,
1779 struct ieee80211_vif *vif, u16 queue,
1780 const struct ieee80211_tx_queue_params *params)
1781 {
1782 wiphy_debug(hw->wiphy,
1783 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1784 __func__, queue,
1785 params->txop, params->cw_min,
1786 params->cw_max, params->aifs);
1787 return 0;
1788 }
1789
1790 static int mac80211_hwsim_get_survey(
1791 struct ieee80211_hw *hw, int idx,
1792 struct survey_info *survey)
1793 {
1794 struct ieee80211_conf *conf = &hw->conf;
1795
1796 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1797
1798 if (idx != 0)
1799 return -ENOENT;
1800
1801 /* Current channel */
1802 survey->channel = conf->chandef.chan;
1803
1804 /*
1805 * Magically conjured noise level --- this is only ok for simulated hardware.
1806 *
1807 * A real driver which cannot determine the real channel noise MUST NOT
1808 * report any noise, especially not a magically conjured one :-)
1809 */
1810 survey->filled = SURVEY_INFO_NOISE_DBM;
1811 survey->noise = -92;
1812
1813 return 0;
1814 }
1815
1816 #ifdef CONFIG_NL80211_TESTMODE
1817 /*
1818 * This section contains example code for using netlink
1819 * attributes with the testmode command in nl80211.
1820 */
1821
1822 /* These enums need to be kept in sync with userspace */
1823 enum hwsim_testmode_attr {
1824 __HWSIM_TM_ATTR_INVALID = 0,
1825 HWSIM_TM_ATTR_CMD = 1,
1826 HWSIM_TM_ATTR_PS = 2,
1827
1828 /* keep last */
1829 __HWSIM_TM_ATTR_AFTER_LAST,
1830 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1831 };
1832
1833 enum hwsim_testmode_cmd {
1834 HWSIM_TM_CMD_SET_PS = 0,
1835 HWSIM_TM_CMD_GET_PS = 1,
1836 HWSIM_TM_CMD_STOP_QUEUES = 2,
1837 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1838 };
1839
1840 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1841 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1842 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1843 };
1844
1845 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1846 struct ieee80211_vif *vif,
1847 void *data, int len)
1848 {
1849 struct mac80211_hwsim_data *hwsim = hw->priv;
1850 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1851 struct sk_buff *skb;
1852 int err, ps;
1853
1854 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1855 hwsim_testmode_policy);
1856 if (err)
1857 return err;
1858
1859 if (!tb[HWSIM_TM_ATTR_CMD])
1860 return -EINVAL;
1861
1862 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1863 case HWSIM_TM_CMD_SET_PS:
1864 if (!tb[HWSIM_TM_ATTR_PS])
1865 return -EINVAL;
1866 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1867 return hwsim_fops_ps_write(hwsim, ps);
1868 case HWSIM_TM_CMD_GET_PS:
1869 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1870 nla_total_size(sizeof(u32)));
1871 if (!skb)
1872 return -ENOMEM;
1873 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1874 goto nla_put_failure;
1875 return cfg80211_testmode_reply(skb);
1876 case HWSIM_TM_CMD_STOP_QUEUES:
1877 ieee80211_stop_queues(hw);
1878 return 0;
1879 case HWSIM_TM_CMD_WAKE_QUEUES:
1880 ieee80211_wake_queues(hw);
1881 return 0;
1882 default:
1883 return -EOPNOTSUPP;
1884 }
1885
1886 nla_put_failure:
1887 kfree_skb(skb);
1888 return -ENOBUFS;
1889 }
1890 #endif
1891
1892 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1893 struct ieee80211_vif *vif,
1894 struct ieee80211_ampdu_params *params)
1895 {
1896 struct ieee80211_sta *sta = params->sta;
1897 enum ieee80211_ampdu_mlme_action action = params->action;
1898 u16 tid = params->tid;
1899
1900 switch (action) {
1901 case IEEE80211_AMPDU_TX_START:
1902 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1903 break;
1904 case IEEE80211_AMPDU_TX_STOP_CONT:
1905 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1906 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1907 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1908 break;
1909 case IEEE80211_AMPDU_TX_OPERATIONAL:
1910 break;
1911 case IEEE80211_AMPDU_RX_START:
1912 case IEEE80211_AMPDU_RX_STOP:
1913 break;
1914 default:
1915 return -EOPNOTSUPP;
1916 }
1917
1918 return 0;
1919 }
1920
1921 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1922 struct ieee80211_vif *vif,
1923 u32 queues, bool drop)
1924 {
1925 /* Not implemented, queues only on kernel side */
1926 }
1927
1928 static void hw_scan_work(struct work_struct *work)
1929 {
1930 struct mac80211_hwsim_data *hwsim =
1931 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1932 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1933 int dwell, i;
1934
1935 mutex_lock(&hwsim->mutex);
1936 if (hwsim->scan_chan_idx >= req->n_channels) {
1937 struct cfg80211_scan_info info = {
1938 .aborted = false,
1939 };
1940
1941 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1942 ieee80211_scan_completed(hwsim->hw, &info);
1943 hwsim->hw_scan_request = NULL;
1944 hwsim->hw_scan_vif = NULL;
1945 hwsim->tmp_chan = NULL;
1946 mutex_unlock(&hwsim->mutex);
1947 return;
1948 }
1949
1950 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1951 req->channels[hwsim->scan_chan_idx]->center_freq);
1952
1953 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1954 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1955 IEEE80211_CHAN_RADAR) ||
1956 !req->n_ssids) {
1957 dwell = 120;
1958 } else {
1959 dwell = 30;
1960 /* send probes */
1961 for (i = 0; i < req->n_ssids; i++) {
1962 struct sk_buff *probe;
1963 struct ieee80211_mgmt *mgmt;
1964
1965 probe = ieee80211_probereq_get(hwsim->hw,
1966 hwsim->scan_addr,
1967 req->ssids[i].ssid,
1968 req->ssids[i].ssid_len,
1969 req->ie_len);
1970 if (!probe)
1971 continue;
1972
1973 mgmt = (struct ieee80211_mgmt *) probe->data;
1974 memcpy(mgmt->da, req->bssid, ETH_ALEN);
1975 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
1976
1977 if (req->ie_len)
1978 memcpy(skb_put(probe, req->ie_len), req->ie,
1979 req->ie_len);
1980
1981 local_bh_disable();
1982 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1983 hwsim->tmp_chan);
1984 local_bh_enable();
1985 }
1986 }
1987 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1988 msecs_to_jiffies(dwell));
1989 hwsim->scan_chan_idx++;
1990 mutex_unlock(&hwsim->mutex);
1991 }
1992
1993 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1994 struct ieee80211_vif *vif,
1995 struct ieee80211_scan_request *hw_req)
1996 {
1997 struct mac80211_hwsim_data *hwsim = hw->priv;
1998 struct cfg80211_scan_request *req = &hw_req->req;
1999
2000 mutex_lock(&hwsim->mutex);
2001 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2002 mutex_unlock(&hwsim->mutex);
2003 return -EBUSY;
2004 }
2005 hwsim->hw_scan_request = req;
2006 hwsim->hw_scan_vif = vif;
2007 hwsim->scan_chan_idx = 0;
2008 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2009 get_random_mask_addr(hwsim->scan_addr,
2010 hw_req->req.mac_addr,
2011 hw_req->req.mac_addr_mask);
2012 else
2013 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2014 mutex_unlock(&hwsim->mutex);
2015
2016 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2017
2018 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2019
2020 return 0;
2021 }
2022
2023 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2024 struct ieee80211_vif *vif)
2025 {
2026 struct mac80211_hwsim_data *hwsim = hw->priv;
2027 struct cfg80211_scan_info info = {
2028 .aborted = true,
2029 };
2030
2031 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2032
2033 cancel_delayed_work_sync(&hwsim->hw_scan);
2034
2035 mutex_lock(&hwsim->mutex);
2036 ieee80211_scan_completed(hwsim->hw, &info);
2037 hwsim->tmp_chan = NULL;
2038 hwsim->hw_scan_request = NULL;
2039 hwsim->hw_scan_vif = NULL;
2040 mutex_unlock(&hwsim->mutex);
2041 }
2042
2043 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2044 struct ieee80211_vif *vif,
2045 const u8 *mac_addr)
2046 {
2047 struct mac80211_hwsim_data *hwsim = hw->priv;
2048
2049 mutex_lock(&hwsim->mutex);
2050
2051 if (hwsim->scanning) {
2052 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2053 goto out;
2054 }
2055
2056 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2057
2058 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2059 hwsim->scanning = true;
2060
2061 out:
2062 mutex_unlock(&hwsim->mutex);
2063 }
2064
2065 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2066 struct ieee80211_vif *vif)
2067 {
2068 struct mac80211_hwsim_data *hwsim = hw->priv;
2069
2070 mutex_lock(&hwsim->mutex);
2071
2072 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2073 hwsim->scanning = false;
2074 eth_zero_addr(hwsim->scan_addr);
2075
2076 mutex_unlock(&hwsim->mutex);
2077 }
2078
2079 static void hw_roc_start(struct work_struct *work)
2080 {
2081 struct mac80211_hwsim_data *hwsim =
2082 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2083
2084 mutex_lock(&hwsim->mutex);
2085
2086 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2087 hwsim->tmp_chan = hwsim->roc_chan;
2088 ieee80211_ready_on_channel(hwsim->hw);
2089
2090 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2091 msecs_to_jiffies(hwsim->roc_duration));
2092
2093 mutex_unlock(&hwsim->mutex);
2094 }
2095
2096 static void hw_roc_done(struct work_struct *work)
2097 {
2098 struct mac80211_hwsim_data *hwsim =
2099 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2100
2101 mutex_lock(&hwsim->mutex);
2102 ieee80211_remain_on_channel_expired(hwsim->hw);
2103 hwsim->tmp_chan = NULL;
2104 mutex_unlock(&hwsim->mutex);
2105
2106 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2107 }
2108
2109 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2110 struct ieee80211_vif *vif,
2111 struct ieee80211_channel *chan,
2112 int duration,
2113 enum ieee80211_roc_type type)
2114 {
2115 struct mac80211_hwsim_data *hwsim = hw->priv;
2116
2117 mutex_lock(&hwsim->mutex);
2118 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2119 mutex_unlock(&hwsim->mutex);
2120 return -EBUSY;
2121 }
2122
2123 hwsim->roc_chan = chan;
2124 hwsim->roc_duration = duration;
2125 mutex_unlock(&hwsim->mutex);
2126
2127 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2128 chan->center_freq, duration);
2129 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2130
2131 return 0;
2132 }
2133
2134 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2135 {
2136 struct mac80211_hwsim_data *hwsim = hw->priv;
2137
2138 cancel_delayed_work_sync(&hwsim->roc_start);
2139 cancel_delayed_work_sync(&hwsim->roc_done);
2140
2141 mutex_lock(&hwsim->mutex);
2142 hwsim->tmp_chan = NULL;
2143 mutex_unlock(&hwsim->mutex);
2144
2145 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2146
2147 return 0;
2148 }
2149
2150 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2151 struct ieee80211_chanctx_conf *ctx)
2152 {
2153 hwsim_set_chanctx_magic(ctx);
2154 wiphy_debug(hw->wiphy,
2155 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2156 ctx->def.chan->center_freq, ctx->def.width,
2157 ctx->def.center_freq1, ctx->def.center_freq2);
2158 return 0;
2159 }
2160
2161 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2162 struct ieee80211_chanctx_conf *ctx)
2163 {
2164 wiphy_debug(hw->wiphy,
2165 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2166 ctx->def.chan->center_freq, ctx->def.width,
2167 ctx->def.center_freq1, ctx->def.center_freq2);
2168 hwsim_check_chanctx_magic(ctx);
2169 hwsim_clear_chanctx_magic(ctx);
2170 }
2171
2172 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2173 struct ieee80211_chanctx_conf *ctx,
2174 u32 changed)
2175 {
2176 hwsim_check_chanctx_magic(ctx);
2177 wiphy_debug(hw->wiphy,
2178 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2179 ctx->def.chan->center_freq, ctx->def.width,
2180 ctx->def.center_freq1, ctx->def.center_freq2);
2181 }
2182
2183 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2184 struct ieee80211_vif *vif,
2185 struct ieee80211_chanctx_conf *ctx)
2186 {
2187 hwsim_check_magic(vif);
2188 hwsim_check_chanctx_magic(ctx);
2189
2190 return 0;
2191 }
2192
2193 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2194 struct ieee80211_vif *vif,
2195 struct ieee80211_chanctx_conf *ctx)
2196 {
2197 hwsim_check_magic(vif);
2198 hwsim_check_chanctx_magic(ctx);
2199 }
2200
2201 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2202 "tx_pkts_nic",
2203 "tx_bytes_nic",
2204 "rx_pkts_nic",
2205 "rx_bytes_nic",
2206 "d_tx_dropped",
2207 "d_tx_failed",
2208 "d_ps_mode",
2209 "d_group",
2210 "d_tx_power",
2211 };
2212
2213 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2214
2215 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2216 struct ieee80211_vif *vif,
2217 u32 sset, u8 *data)
2218 {
2219 if (sset == ETH_SS_STATS)
2220 memcpy(data, *mac80211_hwsim_gstrings_stats,
2221 sizeof(mac80211_hwsim_gstrings_stats));
2222 }
2223
2224 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2225 struct ieee80211_vif *vif, int sset)
2226 {
2227 if (sset == ETH_SS_STATS)
2228 return MAC80211_HWSIM_SSTATS_LEN;
2229 return 0;
2230 }
2231
2232 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2233 struct ieee80211_vif *vif,
2234 struct ethtool_stats *stats, u64 *data)
2235 {
2236 struct mac80211_hwsim_data *ar = hw->priv;
2237 int i = 0;
2238
2239 data[i++] = ar->tx_pkts;
2240 data[i++] = ar->tx_bytes;
2241 data[i++] = ar->rx_pkts;
2242 data[i++] = ar->rx_bytes;
2243 data[i++] = ar->tx_dropped;
2244 data[i++] = ar->tx_failed;
2245 data[i++] = ar->ps;
2246 data[i++] = ar->group;
2247 data[i++] = ar->power_level;
2248
2249 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2250 }
2251
2252 #define HWSIM_COMMON_OPS \
2253 .tx = mac80211_hwsim_tx, \
2254 .start = mac80211_hwsim_start, \
2255 .stop = mac80211_hwsim_stop, \
2256 .add_interface = mac80211_hwsim_add_interface, \
2257 .change_interface = mac80211_hwsim_change_interface, \
2258 .remove_interface = mac80211_hwsim_remove_interface, \
2259 .config = mac80211_hwsim_config, \
2260 .configure_filter = mac80211_hwsim_configure_filter, \
2261 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2262 .sta_add = mac80211_hwsim_sta_add, \
2263 .sta_remove = mac80211_hwsim_sta_remove, \
2264 .sta_notify = mac80211_hwsim_sta_notify, \
2265 .set_tim = mac80211_hwsim_set_tim, \
2266 .conf_tx = mac80211_hwsim_conf_tx, \
2267 .get_survey = mac80211_hwsim_get_survey, \
2268 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2269 .ampdu_action = mac80211_hwsim_ampdu_action, \
2270 .flush = mac80211_hwsim_flush, \
2271 .get_tsf = mac80211_hwsim_get_tsf, \
2272 .set_tsf = mac80211_hwsim_set_tsf, \
2273 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2274 .get_et_stats = mac80211_hwsim_get_et_stats, \
2275 .get_et_strings = mac80211_hwsim_get_et_strings,
2276
2277 static const struct ieee80211_ops mac80211_hwsim_ops = {
2278 HWSIM_COMMON_OPS
2279 .sw_scan_start = mac80211_hwsim_sw_scan,
2280 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2281 };
2282
2283 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2284 HWSIM_COMMON_OPS
2285 .hw_scan = mac80211_hwsim_hw_scan,
2286 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2287 .sw_scan_start = NULL,
2288 .sw_scan_complete = NULL,
2289 .remain_on_channel = mac80211_hwsim_roc,
2290 .cancel_remain_on_channel = mac80211_hwsim_croc,
2291 .add_chanctx = mac80211_hwsim_add_chanctx,
2292 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2293 .change_chanctx = mac80211_hwsim_change_chanctx,
2294 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2295 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2296 };
2297
2298 struct hwsim_new_radio_params {
2299 unsigned int channels;
2300 const char *reg_alpha2;
2301 const struct ieee80211_regdomain *regd;
2302 bool reg_strict;
2303 bool p2p_device;
2304 bool use_chanctx;
2305 bool destroy_on_close;
2306 const char *hwname;
2307 bool no_vif;
2308 };
2309
2310 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2311 struct genl_info *info)
2312 {
2313 if (info)
2314 genl_notify(&hwsim_genl_family, mcast_skb, info,
2315 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2316 else
2317 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2318 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2319 }
2320
2321 static int append_radio_msg(struct sk_buff *skb, int id,
2322 struct hwsim_new_radio_params *param)
2323 {
2324 int ret;
2325
2326 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2327 if (ret < 0)
2328 return ret;
2329
2330 if (param->channels) {
2331 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2332 if (ret < 0)
2333 return ret;
2334 }
2335
2336 if (param->reg_alpha2) {
2337 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2338 param->reg_alpha2);
2339 if (ret < 0)
2340 return ret;
2341 }
2342
2343 if (param->regd) {
2344 int i;
2345
2346 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2347 if (hwsim_world_regdom_custom[i] != param->regd)
2348 continue;
2349
2350 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2351 if (ret < 0)
2352 return ret;
2353 break;
2354 }
2355 }
2356
2357 if (param->reg_strict) {
2358 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2359 if (ret < 0)
2360 return ret;
2361 }
2362
2363 if (param->p2p_device) {
2364 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2365 if (ret < 0)
2366 return ret;
2367 }
2368
2369 if (param->use_chanctx) {
2370 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2371 if (ret < 0)
2372 return ret;
2373 }
2374
2375 if (param->hwname) {
2376 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2377 strlen(param->hwname), param->hwname);
2378 if (ret < 0)
2379 return ret;
2380 }
2381
2382 return 0;
2383 }
2384
2385 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2386 struct hwsim_new_radio_params *param)
2387 {
2388 struct sk_buff *mcast_skb;
2389 void *data;
2390
2391 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2392 if (!mcast_skb)
2393 return;
2394
2395 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2396 HWSIM_CMD_NEW_RADIO);
2397 if (!data)
2398 goto out_err;
2399
2400 if (append_radio_msg(mcast_skb, id, param) < 0)
2401 goto out_err;
2402
2403 genlmsg_end(mcast_skb, data);
2404
2405 hwsim_mcast_config_msg(mcast_skb, info);
2406 return;
2407
2408 out_err:
2409 genlmsg_cancel(mcast_skb, data);
2410 nlmsg_free(mcast_skb);
2411 }
2412
2413 static int mac80211_hwsim_new_radio(struct genl_info *info,
2414 struct hwsim_new_radio_params *param)
2415 {
2416 int err;
2417 u8 addr[ETH_ALEN];
2418 struct mac80211_hwsim_data *data;
2419 struct ieee80211_hw *hw;
2420 enum nl80211_band band;
2421 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2422 struct net *net;
2423 int idx;
2424
2425 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2426 return -EINVAL;
2427
2428 spin_lock_bh(&hwsim_radio_lock);
2429 idx = hwsim_radio_idx++;
2430 spin_unlock_bh(&hwsim_radio_lock);
2431
2432 if (param->use_chanctx)
2433 ops = &mac80211_hwsim_mchan_ops;
2434 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2435 if (!hw) {
2436 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2437 err = -ENOMEM;
2438 goto failed;
2439 }
2440
2441 if (info)
2442 net = genl_info_net(info);
2443 else
2444 net = &init_net;
2445 wiphy_net_set(hw->wiphy, net);
2446
2447 data = hw->priv;
2448 data->hw = hw;
2449
2450 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2451 if (IS_ERR(data->dev)) {
2452 printk(KERN_DEBUG
2453 "mac80211_hwsim: device_create failed (%ld)\n",
2454 PTR_ERR(data->dev));
2455 err = -ENOMEM;
2456 goto failed_drvdata;
2457 }
2458 data->dev->driver = &mac80211_hwsim_driver.driver;
2459 err = device_bind_driver(data->dev);
2460 if (err != 0) {
2461 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2462 err);
2463 goto failed_bind;
2464 }
2465
2466 skb_queue_head_init(&data->pending);
2467
2468 SET_IEEE80211_DEV(hw, data->dev);
2469 eth_zero_addr(addr);
2470 addr[0] = 0x02;
2471 addr[3] = idx >> 8;
2472 addr[4] = idx;
2473 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2474 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2475 data->addresses[1].addr[0] |= 0x40;
2476 hw->wiphy->n_addresses = 2;
2477 hw->wiphy->addresses = data->addresses;
2478
2479 data->channels = param->channels;
2480 data->use_chanctx = param->use_chanctx;
2481 data->idx = idx;
2482 data->destroy_on_close = param->destroy_on_close;
2483 if (info)
2484 data->portid = info->snd_portid;
2485
2486 if (data->use_chanctx) {
2487 hw->wiphy->max_scan_ssids = 255;
2488 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2489 hw->wiphy->max_remain_on_channel_duration = 1000;
2490 hw->wiphy->iface_combinations = &data->if_combination;
2491 if (param->p2p_device)
2492 data->if_combination = hwsim_if_comb_p2p_dev[0];
2493 else
2494 data->if_combination = hwsim_if_comb[0];
2495 hw->wiphy->n_iface_combinations = 1;
2496 /* For channels > 1 DFS is not allowed */
2497 data->if_combination.radar_detect_widths = 0;
2498 data->if_combination.num_different_channels = data->channels;
2499 } else if (param->p2p_device) {
2500 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2501 hw->wiphy->n_iface_combinations =
2502 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2503 } else {
2504 hw->wiphy->iface_combinations = hwsim_if_comb;
2505 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2506 }
2507
2508 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2509 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2510 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2511
2512 hw->queues = 5;
2513 hw->offchannel_tx_hw_queue = 4;
2514 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2515 BIT(NL80211_IFTYPE_AP) |
2516 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2517 BIT(NL80211_IFTYPE_P2P_GO) |
2518 BIT(NL80211_IFTYPE_ADHOC) |
2519 BIT(NL80211_IFTYPE_MESH_POINT);
2520
2521 if (param->p2p_device)
2522 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2523
2524 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2525 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2526 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2527 ieee80211_hw_set(hw, QUEUE_CONTROL);
2528 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2529 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2530 ieee80211_hw_set(hw, MFP_CAPABLE);
2531 ieee80211_hw_set(hw, SIGNAL_DBM);
2532 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2533 if (rctbl)
2534 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2535
2536 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2537 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2538 WIPHY_FLAG_AP_UAPSD |
2539 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2540 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2541 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2542 NL80211_FEATURE_STATIC_SMPS |
2543 NL80211_FEATURE_DYNAMIC_SMPS |
2544 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2545 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2546
2547 /* ask mac80211 to reserve space for magic */
2548 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2549 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2550 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2551
2552 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2553 sizeof(hwsim_channels_2ghz));
2554 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2555 sizeof(hwsim_channels_5ghz));
2556 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2557
2558 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2559 struct ieee80211_supported_band *sband = &data->bands[band];
2560 switch (band) {
2561 case NL80211_BAND_2GHZ:
2562 sband->channels = data->channels_2ghz;
2563 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2564 sband->bitrates = data->rates;
2565 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2566 break;
2567 case NL80211_BAND_5GHZ:
2568 sband->channels = data->channels_5ghz;
2569 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2570 sband->bitrates = data->rates + 4;
2571 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2572
2573 sband->vht_cap.vht_supported = true;
2574 sband->vht_cap.cap =
2575 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2576 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2577 IEEE80211_VHT_CAP_RXLDPC |
2578 IEEE80211_VHT_CAP_SHORT_GI_80 |
2579 IEEE80211_VHT_CAP_SHORT_GI_160 |
2580 IEEE80211_VHT_CAP_TXSTBC |
2581 IEEE80211_VHT_CAP_RXSTBC_1 |
2582 IEEE80211_VHT_CAP_RXSTBC_2 |
2583 IEEE80211_VHT_CAP_RXSTBC_3 |
2584 IEEE80211_VHT_CAP_RXSTBC_4 |
2585 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2586 sband->vht_cap.vht_mcs.rx_mcs_map =
2587 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2588 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2589 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2590 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2591 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2592 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2593 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2594 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2595 sband->vht_cap.vht_mcs.tx_mcs_map =
2596 sband->vht_cap.vht_mcs.rx_mcs_map;
2597 break;
2598 default:
2599 continue;
2600 }
2601
2602 sband->ht_cap.ht_supported = true;
2603 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2604 IEEE80211_HT_CAP_GRN_FLD |
2605 IEEE80211_HT_CAP_SGI_20 |
2606 IEEE80211_HT_CAP_SGI_40 |
2607 IEEE80211_HT_CAP_DSSSCCK40;
2608 sband->ht_cap.ampdu_factor = 0x3;
2609 sband->ht_cap.ampdu_density = 0x6;
2610 memset(&sband->ht_cap.mcs, 0,
2611 sizeof(sband->ht_cap.mcs));
2612 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2613 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2614 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2615
2616 hw->wiphy->bands[band] = sband;
2617 }
2618
2619 /* By default all radios belong to the first group */
2620 data->group = 1;
2621 mutex_init(&data->mutex);
2622
2623 data->netgroup = hwsim_net_get_netgroup(net);
2624
2625 /* Enable frame retransmissions for lossy channels */
2626 hw->max_rates = 4;
2627 hw->max_rate_tries = 11;
2628
2629 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2630 hw->wiphy->n_vendor_commands =
2631 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2632 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2633 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2634
2635 if (param->reg_strict)
2636 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2637 if (param->regd) {
2638 data->regd = param->regd;
2639 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2640 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2641 /* give the regulatory workqueue a chance to run */
2642 schedule_timeout_interruptible(1);
2643 }
2644
2645 if (param->no_vif)
2646 ieee80211_hw_set(hw, NO_AUTO_VIF);
2647
2648 err = ieee80211_register_hw(hw);
2649 if (err < 0) {
2650 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2651 err);
2652 goto failed_hw;
2653 }
2654
2655 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2656
2657 if (param->reg_alpha2) {
2658 data->alpha2[0] = param->reg_alpha2[0];
2659 data->alpha2[1] = param->reg_alpha2[1];
2660 regulatory_hint(hw->wiphy, param->reg_alpha2);
2661 }
2662
2663 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2664 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2665 debugfs_create_file("group", 0666, data->debugfs, data,
2666 &hwsim_fops_group);
2667 if (!data->use_chanctx)
2668 debugfs_create_file("dfs_simulate_radar", 0222,
2669 data->debugfs,
2670 data, &hwsim_simulate_radar);
2671
2672 tasklet_hrtimer_init(&data->beacon_timer,
2673 mac80211_hwsim_beacon,
2674 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2675
2676 spin_lock_bh(&hwsim_radio_lock);
2677 list_add_tail(&data->list, &hwsim_radios);
2678 spin_unlock_bh(&hwsim_radio_lock);
2679
2680 if (idx > 0)
2681 hwsim_mcast_new_radio(idx, info, param);
2682
2683 return idx;
2684
2685 failed_hw:
2686 device_release_driver(data->dev);
2687 failed_bind:
2688 device_unregister(data->dev);
2689 failed_drvdata:
2690 ieee80211_free_hw(hw);
2691 failed:
2692 return err;
2693 }
2694
2695 static void hwsim_mcast_del_radio(int id, const char *hwname,
2696 struct genl_info *info)
2697 {
2698 struct sk_buff *skb;
2699 void *data;
2700 int ret;
2701
2702 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2703 if (!skb)
2704 return;
2705
2706 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2707 HWSIM_CMD_DEL_RADIO);
2708 if (!data)
2709 goto error;
2710
2711 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2712 if (ret < 0)
2713 goto error;
2714
2715 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2716 hwname);
2717 if (ret < 0)
2718 goto error;
2719
2720 genlmsg_end(skb, data);
2721
2722 hwsim_mcast_config_msg(skb, info);
2723
2724 return;
2725
2726 error:
2727 nlmsg_free(skb);
2728 }
2729
2730 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2731 const char *hwname,
2732 struct genl_info *info)
2733 {
2734 hwsim_mcast_del_radio(data->idx, hwname, info);
2735 debugfs_remove_recursive(data->debugfs);
2736 ieee80211_unregister_hw(data->hw);
2737 device_release_driver(data->dev);
2738 device_unregister(data->dev);
2739 ieee80211_free_hw(data->hw);
2740 }
2741
2742 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2743 struct mac80211_hwsim_data *data,
2744 u32 portid, u32 seq,
2745 struct netlink_callback *cb, int flags)
2746 {
2747 void *hdr;
2748 struct hwsim_new_radio_params param = { };
2749 int res = -EMSGSIZE;
2750
2751 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2752 HWSIM_CMD_GET_RADIO);
2753 if (!hdr)
2754 return -EMSGSIZE;
2755
2756 if (cb)
2757 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2758
2759 if (data->alpha2[0] && data->alpha2[1])
2760 param.reg_alpha2 = data->alpha2;
2761
2762 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2763 REGULATORY_STRICT_REG);
2764 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2765 BIT(NL80211_IFTYPE_P2P_DEVICE));
2766 param.use_chanctx = data->use_chanctx;
2767 param.regd = data->regd;
2768 param.channels = data->channels;
2769 param.hwname = wiphy_name(data->hw->wiphy);
2770
2771 res = append_radio_msg(skb, data->idx, &param);
2772 if (res < 0)
2773 goto out_err;
2774
2775 genlmsg_end(skb, hdr);
2776 return 0;
2777
2778 out_err:
2779 genlmsg_cancel(skb, hdr);
2780 return res;
2781 }
2782
2783 static void mac80211_hwsim_free(void)
2784 {
2785 struct mac80211_hwsim_data *data;
2786
2787 spin_lock_bh(&hwsim_radio_lock);
2788 while ((data = list_first_entry_or_null(&hwsim_radios,
2789 struct mac80211_hwsim_data,
2790 list))) {
2791 list_del(&data->list);
2792 spin_unlock_bh(&hwsim_radio_lock);
2793 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2794 NULL);
2795 spin_lock_bh(&hwsim_radio_lock);
2796 }
2797 spin_unlock_bh(&hwsim_radio_lock);
2798 class_destroy(hwsim_class);
2799 }
2800
2801 static const struct net_device_ops hwsim_netdev_ops = {
2802 .ndo_start_xmit = hwsim_mon_xmit,
2803 .ndo_set_mac_address = eth_mac_addr,
2804 .ndo_validate_addr = eth_validate_addr,
2805 };
2806
2807 static void hwsim_mon_setup(struct net_device *dev)
2808 {
2809 dev->netdev_ops = &hwsim_netdev_ops;
2810 dev->destructor = free_netdev;
2811 ether_setup(dev);
2812 dev->priv_flags |= IFF_NO_QUEUE;
2813 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2814 eth_zero_addr(dev->dev_addr);
2815 dev->dev_addr[0] = 0x12;
2816 }
2817
2818 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2819 {
2820 struct mac80211_hwsim_data *data;
2821 bool _found = false;
2822
2823 spin_lock_bh(&hwsim_radio_lock);
2824 list_for_each_entry(data, &hwsim_radios, list) {
2825 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2826 _found = true;
2827 break;
2828 }
2829 }
2830 spin_unlock_bh(&hwsim_radio_lock);
2831
2832 if (!_found)
2833 return NULL;
2834
2835 return data;
2836 }
2837
2838 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2839 {
2840 struct mac80211_hwsim_data *data;
2841
2842 hwsim_net_set_wmediumd(net, portid);
2843
2844 spin_lock_bh(&hwsim_radio_lock);
2845 list_for_each_entry(data, &hwsim_radios, list) {
2846 if (data->netgroup == hwsim_net_get_netgroup(net))
2847 data->wmediumd = portid;
2848 }
2849 spin_unlock_bh(&hwsim_radio_lock);
2850 }
2851
2852 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2853 struct genl_info *info)
2854 {
2855
2856 struct ieee80211_hdr *hdr;
2857 struct mac80211_hwsim_data *data2;
2858 struct ieee80211_tx_info *txi;
2859 struct hwsim_tx_rate *tx_attempts;
2860 u64 ret_skb_cookie;
2861 struct sk_buff *skb, *tmp;
2862 const u8 *src;
2863 unsigned int hwsim_flags;
2864 int i;
2865 bool found = false;
2866
2867 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2868 !info->attrs[HWSIM_ATTR_FLAGS] ||
2869 !info->attrs[HWSIM_ATTR_COOKIE] ||
2870 !info->attrs[HWSIM_ATTR_SIGNAL] ||
2871 !info->attrs[HWSIM_ATTR_TX_INFO])
2872 goto out;
2873
2874 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2875 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2876 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2877
2878 data2 = get_hwsim_data_ref_from_addr(src);
2879 if (!data2)
2880 goto out;
2881
2882 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2883 goto out;
2884
2885 if (info->snd_portid != data2->wmediumd)
2886 goto out;
2887
2888 /* look for the skb matching the cookie passed back from user */
2889 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2890 u64 skb_cookie;
2891
2892 txi = IEEE80211_SKB_CB(skb);
2893 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2894
2895 if (skb_cookie == ret_skb_cookie) {
2896 skb_unlink(skb, &data2->pending);
2897 found = true;
2898 break;
2899 }
2900 }
2901
2902 /* not found */
2903 if (!found)
2904 goto out;
2905
2906 /* Tx info received because the frame was broadcasted on user space,
2907 so we get all the necessary info: tx attempts and skb control buff */
2908
2909 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2910 info->attrs[HWSIM_ATTR_TX_INFO]);
2911
2912 /* now send back TX status */
2913 txi = IEEE80211_SKB_CB(skb);
2914
2915 ieee80211_tx_info_clear_status(txi);
2916
2917 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2918 txi->status.rates[i].idx = tx_attempts[i].idx;
2919 txi->status.rates[i].count = tx_attempts[i].count;
2920 /*txi->status.rates[i].flags = 0;*/
2921 }
2922
2923 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2924
2925 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2926 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2927 if (skb->len >= 16) {
2928 hdr = (struct ieee80211_hdr *) skb->data;
2929 mac80211_hwsim_monitor_ack(data2->channel,
2930 hdr->addr2);
2931 }
2932 txi->flags |= IEEE80211_TX_STAT_ACK;
2933 }
2934 ieee80211_tx_status_irqsafe(data2->hw, skb);
2935 return 0;
2936 out:
2937 return -EINVAL;
2938
2939 }
2940
2941 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2942 struct genl_info *info)
2943 {
2944 struct mac80211_hwsim_data *data2;
2945 struct ieee80211_rx_status rx_status;
2946 const u8 *dst;
2947 int frame_data_len;
2948 void *frame_data;
2949 struct sk_buff *skb = NULL;
2950
2951 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2952 !info->attrs[HWSIM_ATTR_FRAME] ||
2953 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2954 !info->attrs[HWSIM_ATTR_SIGNAL])
2955 goto out;
2956
2957 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2958 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2959 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2960
2961 /* Allocate new skb here */
2962 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2963 if (skb == NULL)
2964 goto err;
2965
2966 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2967 goto err;
2968
2969 /* Copy the data */
2970 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2971
2972 data2 = get_hwsim_data_ref_from_addr(dst);
2973 if (!data2)
2974 goto out;
2975
2976 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2977 goto out;
2978
2979 if (info->snd_portid != data2->wmediumd)
2980 goto out;
2981
2982 /* check if radio is configured properly */
2983
2984 if (data2->idle || !data2->started)
2985 goto out;
2986
2987 /* A frame is received from user space */
2988 memset(&rx_status, 0, sizeof(rx_status));
2989 if (info->attrs[HWSIM_ATTR_FREQ]) {
2990 /* throw away off-channel packets, but allow both the temporary
2991 * ("hw" scan/remain-on-channel) and regular channel, since the
2992 * internal datapath also allows this
2993 */
2994 mutex_lock(&data2->mutex);
2995 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2996
2997 if (rx_status.freq != data2->channel->center_freq &&
2998 (!data2->tmp_chan ||
2999 rx_status.freq != data2->tmp_chan->center_freq)) {
3000 mutex_unlock(&data2->mutex);
3001 goto out;
3002 }
3003 mutex_unlock(&data2->mutex);
3004 } else {
3005 rx_status.freq = data2->channel->center_freq;
3006 }
3007
3008 rx_status.band = data2->channel->band;
3009 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3010 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3011
3012 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3013 data2->rx_pkts++;
3014 data2->rx_bytes += skb->len;
3015 ieee80211_rx_irqsafe(data2->hw, skb);
3016
3017 return 0;
3018 err:
3019 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3020 out:
3021 dev_kfree_skb(skb);
3022 return -EINVAL;
3023 }
3024
3025 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3026 struct genl_info *info)
3027 {
3028 struct net *net = genl_info_net(info);
3029 struct mac80211_hwsim_data *data;
3030 int chans = 1;
3031
3032 spin_lock_bh(&hwsim_radio_lock);
3033 list_for_each_entry(data, &hwsim_radios, list)
3034 chans = max(chans, data->channels);
3035 spin_unlock_bh(&hwsim_radio_lock);
3036
3037 /* In the future we should revise the userspace API and allow it
3038 * to set a flag that it does support multi-channel, then we can
3039 * let this pass conditionally on the flag.
3040 * For current userspace, prohibit it since it won't work right.
3041 */
3042 if (chans > 1)
3043 return -EOPNOTSUPP;
3044
3045 if (hwsim_net_get_wmediumd(net))
3046 return -EBUSY;
3047
3048 hwsim_register_wmediumd(net, info->snd_portid);
3049
3050 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3051 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3052
3053 return 0;
3054 }
3055
3056 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3057 {
3058 struct hwsim_new_radio_params param = { 0 };
3059
3060 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3061 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3062 param.channels = channels;
3063 param.destroy_on_close =
3064 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3065
3066 if (info->attrs[HWSIM_ATTR_CHANNELS])
3067 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3068
3069 if (info->attrs[HWSIM_ATTR_NO_VIF])
3070 param.no_vif = true;
3071
3072 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3073 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3074
3075 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3076 param.use_chanctx = true;
3077 else
3078 param.use_chanctx = (param.channels > 1);
3079
3080 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3081 param.reg_alpha2 =
3082 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3083
3084 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3085 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3086
3087 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3088 return -EINVAL;
3089 param.regd = hwsim_world_regdom_custom[idx];
3090 }
3091
3092 return mac80211_hwsim_new_radio(info, &param);
3093 }
3094
3095 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3096 {
3097 struct mac80211_hwsim_data *data;
3098 s64 idx = -1;
3099 const char *hwname = NULL;
3100
3101 if (info->attrs[HWSIM_ATTR_RADIO_ID])
3102 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3103 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3104 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3105 else
3106 return -EINVAL;
3107
3108 spin_lock_bh(&hwsim_radio_lock);
3109 list_for_each_entry(data, &hwsim_radios, list) {
3110 if (idx >= 0) {
3111 if (data->idx != idx)
3112 continue;
3113 } else {
3114 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3115 continue;
3116 }
3117
3118 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3119 continue;
3120
3121 list_del(&data->list);
3122 spin_unlock_bh(&hwsim_radio_lock);
3123 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3124 info);
3125 return 0;
3126 }
3127 spin_unlock_bh(&hwsim_radio_lock);
3128
3129 return -ENODEV;
3130 }
3131
3132 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3133 {
3134 struct mac80211_hwsim_data *data;
3135 struct sk_buff *skb;
3136 int idx, res = -ENODEV;
3137
3138 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3139 return -EINVAL;
3140 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3141
3142 spin_lock_bh(&hwsim_radio_lock);
3143 list_for_each_entry(data, &hwsim_radios, list) {
3144 if (data->idx != idx)
3145 continue;
3146
3147 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3148 continue;
3149
3150 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3151 if (!skb) {
3152 res = -ENOMEM;
3153 goto out_err;
3154 }
3155
3156 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3157 info->snd_seq, NULL, 0);
3158 if (res < 0) {
3159 nlmsg_free(skb);
3160 goto out_err;
3161 }
3162
3163 genlmsg_reply(skb, info);
3164 break;
3165 }
3166
3167 out_err:
3168 spin_unlock_bh(&hwsim_radio_lock);
3169
3170 return res;
3171 }
3172
3173 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3174 struct netlink_callback *cb)
3175 {
3176 int idx = cb->args[0];
3177 struct mac80211_hwsim_data *data = NULL;
3178 int res;
3179
3180 spin_lock_bh(&hwsim_radio_lock);
3181
3182 if (idx == hwsim_radio_idx)
3183 goto done;
3184
3185 list_for_each_entry(data, &hwsim_radios, list) {
3186 if (data->idx < idx)
3187 continue;
3188
3189 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3190 continue;
3191
3192 res = mac80211_hwsim_get_radio(skb, data,
3193 NETLINK_CB(cb->skb).portid,
3194 cb->nlh->nlmsg_seq, cb,
3195 NLM_F_MULTI);
3196 if (res < 0)
3197 break;
3198
3199 idx = data->idx + 1;
3200 }
3201
3202 cb->args[0] = idx;
3203
3204 done:
3205 spin_unlock_bh(&hwsim_radio_lock);
3206 return skb->len;
3207 }
3208
3209 /* Generic Netlink operations array */
3210 static const struct genl_ops hwsim_ops[] = {
3211 {
3212 .cmd = HWSIM_CMD_REGISTER,
3213 .policy = hwsim_genl_policy,
3214 .doit = hwsim_register_received_nl,
3215 .flags = GENL_UNS_ADMIN_PERM,
3216 },
3217 {
3218 .cmd = HWSIM_CMD_FRAME,
3219 .policy = hwsim_genl_policy,
3220 .doit = hwsim_cloned_frame_received_nl,
3221 },
3222 {
3223 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3224 .policy = hwsim_genl_policy,
3225 .doit = hwsim_tx_info_frame_received_nl,
3226 },
3227 {
3228 .cmd = HWSIM_CMD_NEW_RADIO,
3229 .policy = hwsim_genl_policy,
3230 .doit = hwsim_new_radio_nl,
3231 .flags = GENL_UNS_ADMIN_PERM,
3232 },
3233 {
3234 .cmd = HWSIM_CMD_DEL_RADIO,
3235 .policy = hwsim_genl_policy,
3236 .doit = hwsim_del_radio_nl,
3237 .flags = GENL_UNS_ADMIN_PERM,
3238 },
3239 {
3240 .cmd = HWSIM_CMD_GET_RADIO,
3241 .policy = hwsim_genl_policy,
3242 .doit = hwsim_get_radio_nl,
3243 .dumpit = hwsim_dump_radio_nl,
3244 },
3245 };
3246
3247 static struct genl_family hwsim_genl_family __ro_after_init = {
3248 .name = "MAC80211_HWSIM",
3249 .version = 1,
3250 .maxattr = HWSIM_ATTR_MAX,
3251 .netnsok = true,
3252 .module = THIS_MODULE,
3253 .ops = hwsim_ops,
3254 .n_ops = ARRAY_SIZE(hwsim_ops),
3255 .mcgrps = hwsim_mcgrps,
3256 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3257 };
3258
3259 static void destroy_radio(struct work_struct *work)
3260 {
3261 struct mac80211_hwsim_data *data =
3262 container_of(work, struct mac80211_hwsim_data, destroy_work);
3263
3264 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3265 }
3266
3267 static void remove_user_radios(u32 portid)
3268 {
3269 struct mac80211_hwsim_data *entry, *tmp;
3270
3271 spin_lock_bh(&hwsim_radio_lock);
3272 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3273 if (entry->destroy_on_close && entry->portid == portid) {
3274 list_del(&entry->list);
3275 INIT_WORK(&entry->destroy_work, destroy_radio);
3276 schedule_work(&entry->destroy_work);
3277 }
3278 }
3279 spin_unlock_bh(&hwsim_radio_lock);
3280 }
3281
3282 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3283 unsigned long state,
3284 void *_notify)
3285 {
3286 struct netlink_notify *notify = _notify;
3287
3288 if (state != NETLINK_URELEASE)
3289 return NOTIFY_DONE;
3290
3291 remove_user_radios(notify->portid);
3292
3293 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3294 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3295 " socket, switching to perfect channel medium\n");
3296 hwsim_register_wmediumd(notify->net, 0);
3297 }
3298 return NOTIFY_DONE;
3299
3300 }
3301
3302 static struct notifier_block hwsim_netlink_notifier = {
3303 .notifier_call = mac80211_hwsim_netlink_notify,
3304 };
3305
3306 static int __init hwsim_init_netlink(void)
3307 {
3308 int rc;
3309
3310 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3311
3312 rc = genl_register_family(&hwsim_genl_family);
3313 if (rc)
3314 goto failure;
3315
3316 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3317 if (rc) {
3318 genl_unregister_family(&hwsim_genl_family);
3319 goto failure;
3320 }
3321
3322 return 0;
3323
3324 failure:
3325 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3326 return -EINVAL;
3327 }
3328
3329 static __net_init int hwsim_init_net(struct net *net)
3330 {
3331 hwsim_net_set_netgroup(net);
3332
3333 return 0;
3334 }
3335
3336 static void __net_exit hwsim_exit_net(struct net *net)
3337 {
3338 struct mac80211_hwsim_data *data, *tmp;
3339
3340 spin_lock_bh(&hwsim_radio_lock);
3341 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3342 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3343 continue;
3344
3345 /* Radios created in init_net are returned to init_net. */
3346 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3347 continue;
3348
3349 list_del(&data->list);
3350 INIT_WORK(&data->destroy_work, destroy_radio);
3351 schedule_work(&data->destroy_work);
3352 }
3353 spin_unlock_bh(&hwsim_radio_lock);
3354 }
3355
3356 static struct pernet_operations hwsim_net_ops = {
3357 .init = hwsim_init_net,
3358 .exit = hwsim_exit_net,
3359 .id = &hwsim_net_id,
3360 .size = sizeof(struct hwsim_net),
3361 };
3362
3363 static void hwsim_exit_netlink(void)
3364 {
3365 /* unregister the notifier */
3366 netlink_unregister_notifier(&hwsim_netlink_notifier);
3367 /* unregister the family */
3368 genl_unregister_family(&hwsim_genl_family);
3369 }
3370
3371 static int __init init_mac80211_hwsim(void)
3372 {
3373 int i, err;
3374
3375 if (radios < 0 || radios > 100)
3376 return -EINVAL;
3377
3378 if (channels < 1)
3379 return -EINVAL;
3380
3381 spin_lock_init(&hwsim_radio_lock);
3382
3383 err = register_pernet_device(&hwsim_net_ops);
3384 if (err)
3385 return err;
3386
3387 err = platform_driver_register(&mac80211_hwsim_driver);
3388 if (err)
3389 goto out_unregister_pernet;
3390
3391 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3392 if (IS_ERR(hwsim_class)) {
3393 err = PTR_ERR(hwsim_class);
3394 goto out_unregister_driver;
3395 }
3396
3397 err = hwsim_init_netlink();
3398 if (err < 0)
3399 goto out_unregister_driver;
3400
3401 for (i = 0; i < radios; i++) {
3402 struct hwsim_new_radio_params param = { 0 };
3403
3404 param.channels = channels;
3405
3406 switch (regtest) {
3407 case HWSIM_REGTEST_DIFF_COUNTRY:
3408 if (i < ARRAY_SIZE(hwsim_alpha2s))
3409 param.reg_alpha2 = hwsim_alpha2s[i];
3410 break;
3411 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3412 if (!i)
3413 param.reg_alpha2 = hwsim_alpha2s[0];
3414 break;
3415 case HWSIM_REGTEST_STRICT_ALL:
3416 param.reg_strict = true;
3417 case HWSIM_REGTEST_DRIVER_REG_ALL:
3418 param.reg_alpha2 = hwsim_alpha2s[0];
3419 break;
3420 case HWSIM_REGTEST_WORLD_ROAM:
3421 if (i == 0)
3422 param.regd = &hwsim_world_regdom_custom_01;
3423 break;
3424 case HWSIM_REGTEST_CUSTOM_WORLD:
3425 param.regd = &hwsim_world_regdom_custom_01;
3426 break;
3427 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3428 if (i == 0)
3429 param.regd = &hwsim_world_regdom_custom_01;
3430 else if (i == 1)
3431 param.regd = &hwsim_world_regdom_custom_02;
3432 break;
3433 case HWSIM_REGTEST_STRICT_FOLLOW:
3434 if (i == 0) {
3435 param.reg_strict = true;
3436 param.reg_alpha2 = hwsim_alpha2s[0];
3437 }
3438 break;
3439 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3440 if (i == 0) {
3441 param.reg_strict = true;
3442 param.reg_alpha2 = hwsim_alpha2s[0];
3443 } else if (i == 1) {
3444 param.reg_alpha2 = hwsim_alpha2s[1];
3445 }
3446 break;
3447 case HWSIM_REGTEST_ALL:
3448 switch (i) {
3449 case 0:
3450 param.regd = &hwsim_world_regdom_custom_01;
3451 break;
3452 case 1:
3453 param.regd = &hwsim_world_regdom_custom_02;
3454 break;
3455 case 2:
3456 param.reg_alpha2 = hwsim_alpha2s[0];
3457 break;
3458 case 3:
3459 param.reg_alpha2 = hwsim_alpha2s[1];
3460 break;
3461 case 4:
3462 param.reg_strict = true;
3463 param.reg_alpha2 = hwsim_alpha2s[2];
3464 break;
3465 }
3466 break;
3467 default:
3468 break;
3469 }
3470
3471 param.p2p_device = support_p2p_device;
3472 param.use_chanctx = channels > 1;
3473
3474 err = mac80211_hwsim_new_radio(NULL, &param);
3475 if (err < 0)
3476 goto out_free_radios;
3477 }
3478
3479 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3480 hwsim_mon_setup);
3481 if (hwsim_mon == NULL) {
3482 err = -ENOMEM;
3483 goto out_free_radios;
3484 }
3485
3486 rtnl_lock();
3487 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3488 if (err < 0) {
3489 rtnl_unlock();
3490 goto out_free_radios;
3491 }
3492
3493 err = register_netdevice(hwsim_mon);
3494 if (err < 0) {
3495 rtnl_unlock();
3496 goto out_free_mon;
3497 }
3498 rtnl_unlock();
3499
3500 return 0;
3501
3502 out_free_mon:
3503 free_netdev(hwsim_mon);
3504 out_free_radios:
3505 mac80211_hwsim_free();
3506 out_unregister_driver:
3507 platform_driver_unregister(&mac80211_hwsim_driver);
3508 out_unregister_pernet:
3509 unregister_pernet_device(&hwsim_net_ops);
3510 return err;
3511 }
3512 module_init(init_mac80211_hwsim);
3513
3514 static void __exit exit_mac80211_hwsim(void)
3515 {
3516 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3517
3518 hwsim_exit_netlink();
3519
3520 mac80211_hwsim_free();
3521 unregister_netdev(hwsim_mon);
3522 platform_driver_unregister(&mac80211_hwsim_driver);
3523 unregister_pernet_device(&hwsim_net_ops);
3524 }
3525 module_exit(exit_mac80211_hwsim);
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