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1/*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11/*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18#include <linux/list.h>
19#include <linux/slab.h>
20#include <linux/spinlock.h>
21#include <net/dst.h>
22#include <net/xfrm.h>
23#include <net/mac80211.h>
24#include <net/ieee80211_radiotap.h>
25#include <linux/if_arp.h>
26#include <linux/rtnetlink.h>
27#include <linux/etherdevice.h>
28#include <linux/platform_device.h>
29#include <linux/debugfs.h>
30#include <linux/module.h>
31#include <linux/ktime.h>
32#include <net/genetlink.h>
33#include "mac80211_hwsim.h"
34
35#define WARN_QUEUE 100
36#define MAX_QUEUE 200
37
38MODULE_AUTHOR("Jouni Malinen");
39MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
40MODULE_LICENSE("GPL");
41
42static u32 wmediumd_portid;
43
44static int radios = 2;
45module_param(radios, int, 0444);
46MODULE_PARM_DESC(radios, "Number of simulated radios");
47
48static int channels = 1;
49module_param(channels, int, 0444);
50MODULE_PARM_DESC(channels, "Number of concurrent channels");
51
52static bool paged_rx = false;
53module_param(paged_rx, bool, 0644);
54MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
55
56static bool rctbl = false;
57module_param(rctbl, bool, 0444);
58MODULE_PARM_DESC(rctbl, "Handle rate control table");
59
60static bool support_p2p_device = true;
61module_param(support_p2p_device, bool, 0444);
62MODULE_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 */
121enum 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 */
136static int regtest = HWSIM_REGTEST_DISABLED;
137module_param(regtest, int, 0444);
138MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
139
140static const char *hwsim_alpha2s[] = {
141 "FI",
142 "AL",
143 "US",
144 "DE",
145 "JP",
146 "AL",
147};
148
149static 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
160static 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
170static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
171 &hwsim_world_regdom_custom_01,
172 &hwsim_world_regdom_custom_02,
173};
174
175struct 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
185static 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
193static 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
199static 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
205struct hwsim_sta_priv {
206 u32 magic;
207};
208
209#define HWSIM_STA_MAGIC 0x6d537749
210
211static 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
217static 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
223static 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
229struct hwsim_chanctx_priv {
230 u32 magic;
231};
232
233#define HWSIM_CHANCTX_MAGIC 0x6d53774a
234
235static 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
241static 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
247static 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
253static struct class *hwsim_class;
254
255static struct net_device *hwsim_mon; /* global monitor netdev */
256
257#define CHAN2G(_freq) { \
258 .band = IEEE80211_BAND_2GHZ, \
259 .center_freq = (_freq), \
260 .hw_value = (_freq), \
261 .max_power = 20, \
262}
263
264#define CHAN5G(_freq) { \
265 .band = IEEE80211_BAND_5GHZ, \
266 .center_freq = (_freq), \
267 .hw_value = (_freq), \
268 .max_power = 20, \
269}
270
271static const struct ieee80211_channel hwsim_channels_2ghz[] = {
272 CHAN2G(2412), /* Channel 1 */
273 CHAN2G(2417), /* Channel 2 */
274 CHAN2G(2422), /* Channel 3 */
275 CHAN2G(2427), /* Channel 4 */
276 CHAN2G(2432), /* Channel 5 */
277 CHAN2G(2437), /* Channel 6 */
278 CHAN2G(2442), /* Channel 7 */
279 CHAN2G(2447), /* Channel 8 */
280 CHAN2G(2452), /* Channel 9 */
281 CHAN2G(2457), /* Channel 10 */
282 CHAN2G(2462), /* Channel 11 */
283 CHAN2G(2467), /* Channel 12 */
284 CHAN2G(2472), /* Channel 13 */
285 CHAN2G(2484), /* Channel 14 */
286};
287
288static const struct ieee80211_channel hwsim_channels_5ghz[] = {
289 CHAN5G(5180), /* Channel 36 */
290 CHAN5G(5200), /* Channel 40 */
291 CHAN5G(5220), /* Channel 44 */
292 CHAN5G(5240), /* Channel 48 */
293
294 CHAN5G(5260), /* Channel 52 */
295 CHAN5G(5280), /* Channel 56 */
296 CHAN5G(5300), /* Channel 60 */
297 CHAN5G(5320), /* Channel 64 */
298
299 CHAN5G(5500), /* Channel 100 */
300 CHAN5G(5520), /* Channel 104 */
301 CHAN5G(5540), /* Channel 108 */
302 CHAN5G(5560), /* Channel 112 */
303 CHAN5G(5580), /* Channel 116 */
304 CHAN5G(5600), /* Channel 120 */
305 CHAN5G(5620), /* Channel 124 */
306 CHAN5G(5640), /* Channel 128 */
307 CHAN5G(5660), /* Channel 132 */
308 CHAN5G(5680), /* Channel 136 */
309 CHAN5G(5700), /* Channel 140 */
310
311 CHAN5G(5745), /* Channel 149 */
312 CHAN5G(5765), /* Channel 153 */
313 CHAN5G(5785), /* Channel 157 */
314 CHAN5G(5805), /* Channel 161 */
315 CHAN5G(5825), /* Channel 165 */
316};
317
318static const struct ieee80211_rate hwsim_rates[] = {
319 { .bitrate = 10 },
320 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
321 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
322 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
323 { .bitrate = 60 },
324 { .bitrate = 90 },
325 { .bitrate = 120 },
326 { .bitrate = 180 },
327 { .bitrate = 240 },
328 { .bitrate = 360 },
329 { .bitrate = 480 },
330 { .bitrate = 540 }
331};
332
333#define OUI_QCA 0x001374
334#define QCA_NL80211_SUBCMD_TEST 1
335enum qca_nl80211_vendor_subcmds {
336 QCA_WLAN_VENDOR_ATTR_TEST = 8,
337 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
338};
339
340static const struct nla_policy
341hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
342 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
343};
344
345static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
346 struct wireless_dev *wdev,
347 const void *data, int data_len)
348{
349 struct sk_buff *skb;
350 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
351 int err;
352 u32 val;
353
354 err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
355 hwsim_vendor_test_policy);
356 if (err)
357 return err;
358 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
359 return -EINVAL;
360 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
361 wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
362
363 /* Send a vendor event as a test. Note that this would not normally be
364 * done within a command handler, but rather, based on some other
365 * trigger. For simplicity, this command is used to trigger the event
366 * here.
367 *
368 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
369 */
370 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
371 if (skb) {
372 /* skb_put() or nla_put() will fill up data within
373 * NL80211_ATTR_VENDOR_DATA.
374 */
375
376 /* Add vendor data */
377 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
378
379 /* Send the event - this will call nla_nest_end() */
380 cfg80211_vendor_event(skb, GFP_KERNEL);
381 }
382
383 /* Send a response to the command */
384 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
385 if (!skb)
386 return -ENOMEM;
387
388 /* skb_put() or nla_put() will fill up data within
389 * NL80211_ATTR_VENDOR_DATA
390 */
391 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
392
393 return cfg80211_vendor_cmd_reply(skb);
394}
395
396static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
397 {
398 .info = { .vendor_id = OUI_QCA,
399 .subcmd = QCA_NL80211_SUBCMD_TEST },
400 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
401 .doit = mac80211_hwsim_vendor_cmd_test,
402 }
403};
404
405/* Advertise support vendor specific events */
406static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
407 { .vendor_id = OUI_QCA, .subcmd = 1 },
408};
409
410static const struct ieee80211_iface_limit hwsim_if_limits[] = {
411 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
412 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
413 BIT(NL80211_IFTYPE_P2P_CLIENT) |
414#ifdef CONFIG_MAC80211_MESH
415 BIT(NL80211_IFTYPE_MESH_POINT) |
416#endif
417 BIT(NL80211_IFTYPE_AP) |
418 BIT(NL80211_IFTYPE_P2P_GO) },
419 /* must be last, see hwsim_if_comb */
420 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
421};
422
423static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
424 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
425};
426
427static const struct ieee80211_iface_combination hwsim_if_comb[] = {
428 {
429 .limits = hwsim_if_limits,
430 /* remove the last entry which is P2P_DEVICE */
431 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
432 .max_interfaces = 2048,
433 .num_different_channels = 1,
434 },
435 {
436 .limits = hwsim_if_dfs_limits,
437 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
438 .max_interfaces = 8,
439 .num_different_channels = 1,
440 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
441 BIT(NL80211_CHAN_WIDTH_20) |
442 BIT(NL80211_CHAN_WIDTH_40) |
443 BIT(NL80211_CHAN_WIDTH_80) |
444 BIT(NL80211_CHAN_WIDTH_160),
445 }
446};
447
448static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
449 {
450 .limits = hwsim_if_limits,
451 .n_limits = ARRAY_SIZE(hwsim_if_limits),
452 .max_interfaces = 2048,
453 .num_different_channels = 1,
454 },
455 {
456 .limits = hwsim_if_dfs_limits,
457 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
458 .max_interfaces = 8,
459 .num_different_channels = 1,
460 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
461 BIT(NL80211_CHAN_WIDTH_20) |
462 BIT(NL80211_CHAN_WIDTH_40) |
463 BIT(NL80211_CHAN_WIDTH_80) |
464 BIT(NL80211_CHAN_WIDTH_160),
465 }
466};
467
468static spinlock_t hwsim_radio_lock;
469static struct list_head hwsim_radios;
470static int hwsim_radio_idx;
471
472static struct platform_driver mac80211_hwsim_driver = {
473 .driver = {
474 .name = "mac80211_hwsim",
475 },
476};
477
478struct mac80211_hwsim_data {
479 struct list_head list;
480 struct ieee80211_hw *hw;
481 struct device *dev;
482 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
483 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
484 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
485 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
486 struct ieee80211_iface_combination if_combination;
487
488 struct mac_address addresses[2];
489 int channels, idx;
490 bool use_chanctx;
491 bool destroy_on_close;
492 struct work_struct destroy_work;
493 u32 portid;
494 char alpha2[2];
495 const struct ieee80211_regdomain *regd;
496
497 struct ieee80211_channel *tmp_chan;
498 struct ieee80211_channel *roc_chan;
499 u32 roc_duration;
500 struct delayed_work roc_start;
501 struct delayed_work roc_done;
502 struct delayed_work hw_scan;
503 struct cfg80211_scan_request *hw_scan_request;
504 struct ieee80211_vif *hw_scan_vif;
505 int scan_chan_idx;
506 u8 scan_addr[ETH_ALEN];
507
508 struct ieee80211_channel *channel;
509 u64 beacon_int /* beacon interval in us */;
510 unsigned int rx_filter;
511 bool started, idle, scanning;
512 struct mutex mutex;
513 struct tasklet_hrtimer beacon_timer;
514 enum ps_mode {
515 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
516 } ps;
517 bool ps_poll_pending;
518 struct dentry *debugfs;
519
520 uintptr_t pending_cookie;
521 struct sk_buff_head pending; /* packets pending */
522 /*
523 * Only radios in the same group can communicate together (the
524 * channel has to match too). Each bit represents a group. A
525 * radio can be in more than one group.
526 */
527 u64 group;
528
529 int power_level;
530
531 /* difference between this hw's clock and the real clock, in usecs */
532 s64 tsf_offset;
533 s64 bcn_delta;
534 /* absolute beacon transmission time. Used to cover up "tx" delay. */
535 u64 abs_bcn_ts;
536
537 /* Stats */
538 u64 tx_pkts;
539 u64 rx_pkts;
540 u64 tx_bytes;
541 u64 rx_bytes;
542 u64 tx_dropped;
543 u64 tx_failed;
544};
545
546
547struct hwsim_radiotap_hdr {
548 struct ieee80211_radiotap_header hdr;
549 __le64 rt_tsft;
550 u8 rt_flags;
551 u8 rt_rate;
552 __le16 rt_channel;
553 __le16 rt_chbitmask;
554} __packed;
555
556struct hwsim_radiotap_ack_hdr {
557 struct ieee80211_radiotap_header hdr;
558 u8 rt_flags;
559 u8 pad;
560 __le16 rt_channel;
561 __le16 rt_chbitmask;
562} __packed;
563
564/* MAC80211_HWSIM netlinf family */
565static struct genl_family hwsim_genl_family = {
566 .id = GENL_ID_GENERATE,
567 .hdrsize = 0,
568 .name = "MAC80211_HWSIM",
569 .version = 1,
570 .maxattr = HWSIM_ATTR_MAX,
571};
572
573enum hwsim_multicast_groups {
574 HWSIM_MCGRP_CONFIG,
575};
576
577static const struct genl_multicast_group hwsim_mcgrps[] = {
578 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
579};
580
581/* MAC80211_HWSIM netlink policy */
582
583static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
584 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
585 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
586 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
587 .len = IEEE80211_MAX_DATA_LEN },
588 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
589 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
590 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
591 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
592 .len = IEEE80211_TX_MAX_RATES *
593 sizeof(struct hwsim_tx_rate)},
594 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
595 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
596 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
597 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
598 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
599 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
600 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
601 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
602 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
603 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
604 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
605};
606
607static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
608 struct sk_buff *skb,
609 struct ieee80211_channel *chan);
610
611/* sysfs attributes */
612static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
613{
614 struct mac80211_hwsim_data *data = dat;
615 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
616 struct sk_buff *skb;
617 struct ieee80211_pspoll *pspoll;
618
619 if (!vp->assoc)
620 return;
621
622 wiphy_debug(data->hw->wiphy,
623 "%s: send PS-Poll to %pM for aid %d\n",
624 __func__, vp->bssid, vp->aid);
625
626 skb = dev_alloc_skb(sizeof(*pspoll));
627 if (!skb)
628 return;
629 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
630 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
631 IEEE80211_STYPE_PSPOLL |
632 IEEE80211_FCTL_PM);
633 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
634 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
635 memcpy(pspoll->ta, mac, ETH_ALEN);
636
637 rcu_read_lock();
638 mac80211_hwsim_tx_frame(data->hw, skb,
639 rcu_dereference(vif->chanctx_conf)->def.chan);
640 rcu_read_unlock();
641}
642
643static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
644 struct ieee80211_vif *vif, int ps)
645{
646 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
647 struct sk_buff *skb;
648 struct ieee80211_hdr *hdr;
649
650 if (!vp->assoc)
651 return;
652
653 wiphy_debug(data->hw->wiphy,
654 "%s: send data::nullfunc to %pM ps=%d\n",
655 __func__, vp->bssid, ps);
656
657 skb = dev_alloc_skb(sizeof(*hdr));
658 if (!skb)
659 return;
660 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
661 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
662 IEEE80211_STYPE_NULLFUNC |
663 (ps ? IEEE80211_FCTL_PM : 0));
664 hdr->duration_id = cpu_to_le16(0);
665 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
666 memcpy(hdr->addr2, mac, ETH_ALEN);
667 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
668
669 rcu_read_lock();
670 mac80211_hwsim_tx_frame(data->hw, skb,
671 rcu_dereference(vif->chanctx_conf)->def.chan);
672 rcu_read_unlock();
673}
674
675
676static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
677 struct ieee80211_vif *vif)
678{
679 struct mac80211_hwsim_data *data = dat;
680 hwsim_send_nullfunc(data, mac, vif, 1);
681}
682
683static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
684 struct ieee80211_vif *vif)
685{
686 struct mac80211_hwsim_data *data = dat;
687 hwsim_send_nullfunc(data, mac, vif, 0);
688}
689
690static int hwsim_fops_ps_read(void *dat, u64 *val)
691{
692 struct mac80211_hwsim_data *data = dat;
693 *val = data->ps;
694 return 0;
695}
696
697static int hwsim_fops_ps_write(void *dat, u64 val)
698{
699 struct mac80211_hwsim_data *data = dat;
700 enum ps_mode old_ps;
701
702 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
703 val != PS_MANUAL_POLL)
704 return -EINVAL;
705
706 old_ps = data->ps;
707 data->ps = val;
708
709 local_bh_disable();
710 if (val == PS_MANUAL_POLL) {
711 ieee80211_iterate_active_interfaces_atomic(
712 data->hw, IEEE80211_IFACE_ITER_NORMAL,
713 hwsim_send_ps_poll, data);
714 data->ps_poll_pending = true;
715 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
716 ieee80211_iterate_active_interfaces_atomic(
717 data->hw, IEEE80211_IFACE_ITER_NORMAL,
718 hwsim_send_nullfunc_ps, data);
719 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
720 ieee80211_iterate_active_interfaces_atomic(
721 data->hw, IEEE80211_IFACE_ITER_NORMAL,
722 hwsim_send_nullfunc_no_ps, data);
723 }
724 local_bh_enable();
725
726 return 0;
727}
728
729DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
730 "%llu\n");
731
732static int hwsim_write_simulate_radar(void *dat, u64 val)
733{
734 struct mac80211_hwsim_data *data = dat;
735
736 ieee80211_radar_detected(data->hw);
737
738 return 0;
739}
740
741DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
742 hwsim_write_simulate_radar, "%llu\n");
743
744static int hwsim_fops_group_read(void *dat, u64 *val)
745{
746 struct mac80211_hwsim_data *data = dat;
747 *val = data->group;
748 return 0;
749}
750
751static int hwsim_fops_group_write(void *dat, u64 val)
752{
753 struct mac80211_hwsim_data *data = dat;
754 data->group = val;
755 return 0;
756}
757
758DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
759 hwsim_fops_group_read, hwsim_fops_group_write,
760 "%llx\n");
761
762static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
763 struct net_device *dev)
764{
765 /* TODO: allow packet injection */
766 dev_kfree_skb(skb);
767 return NETDEV_TX_OK;
768}
769
770static inline u64 mac80211_hwsim_get_tsf_raw(void)
771{
772 return ktime_to_us(ktime_get_real());
773}
774
775static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
776{
777 u64 now = mac80211_hwsim_get_tsf_raw();
778 return cpu_to_le64(now + data->tsf_offset);
779}
780
781static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
782 struct ieee80211_vif *vif)
783{
784 struct mac80211_hwsim_data *data = hw->priv;
785 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
786}
787
788static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
789 struct ieee80211_vif *vif, u64 tsf)
790{
791 struct mac80211_hwsim_data *data = hw->priv;
792 u64 now = mac80211_hwsim_get_tsf(hw, vif);
793 u32 bcn_int = data->beacon_int;
794 u64 delta = abs(tsf - now);
795
796 /* adjust after beaconing with new timestamp at old TBTT */
797 if (tsf > now) {
798 data->tsf_offset += delta;
799 data->bcn_delta = do_div(delta, bcn_int);
800 } else {
801 data->tsf_offset -= delta;
802 data->bcn_delta = -do_div(delta, bcn_int);
803 }
804}
805
806static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
807 struct sk_buff *tx_skb,
808 struct ieee80211_channel *chan)
809{
810 struct mac80211_hwsim_data *data = hw->priv;
811 struct sk_buff *skb;
812 struct hwsim_radiotap_hdr *hdr;
813 u16 flags;
814 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
815 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
816
817 if (WARN_ON(!txrate))
818 return;
819
820 if (!netif_running(hwsim_mon))
821 return;
822
823 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
824 if (skb == NULL)
825 return;
826
827 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
828 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
829 hdr->hdr.it_pad = 0;
830 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
831 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
832 (1 << IEEE80211_RADIOTAP_RATE) |
833 (1 << IEEE80211_RADIOTAP_TSFT) |
834 (1 << IEEE80211_RADIOTAP_CHANNEL));
835 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
836 hdr->rt_flags = 0;
837 hdr->rt_rate = txrate->bitrate / 5;
838 hdr->rt_channel = cpu_to_le16(chan->center_freq);
839 flags = IEEE80211_CHAN_2GHZ;
840 if (txrate->flags & IEEE80211_RATE_ERP_G)
841 flags |= IEEE80211_CHAN_OFDM;
842 else
843 flags |= IEEE80211_CHAN_CCK;
844 hdr->rt_chbitmask = cpu_to_le16(flags);
845
846 skb->dev = hwsim_mon;
847 skb_reset_mac_header(skb);
848 skb->ip_summed = CHECKSUM_UNNECESSARY;
849 skb->pkt_type = PACKET_OTHERHOST;
850 skb->protocol = htons(ETH_P_802_2);
851 memset(skb->cb, 0, sizeof(skb->cb));
852 netif_rx(skb);
853}
854
855
856static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
857 const u8 *addr)
858{
859 struct sk_buff *skb;
860 struct hwsim_radiotap_ack_hdr *hdr;
861 u16 flags;
862 struct ieee80211_hdr *hdr11;
863
864 if (!netif_running(hwsim_mon))
865 return;
866
867 skb = dev_alloc_skb(100);
868 if (skb == NULL)
869 return;
870
871 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
872 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
873 hdr->hdr.it_pad = 0;
874 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
875 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
876 (1 << IEEE80211_RADIOTAP_CHANNEL));
877 hdr->rt_flags = 0;
878 hdr->pad = 0;
879 hdr->rt_channel = cpu_to_le16(chan->center_freq);
880 flags = IEEE80211_CHAN_2GHZ;
881 hdr->rt_chbitmask = cpu_to_le16(flags);
882
883 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
884 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
885 IEEE80211_STYPE_ACK);
886 hdr11->duration_id = cpu_to_le16(0);
887 memcpy(hdr11->addr1, addr, ETH_ALEN);
888
889 skb->dev = hwsim_mon;
890 skb_reset_mac_header(skb);
891 skb->ip_summed = CHECKSUM_UNNECESSARY;
892 skb->pkt_type = PACKET_OTHERHOST;
893 skb->protocol = htons(ETH_P_802_2);
894 memset(skb->cb, 0, sizeof(skb->cb));
895 netif_rx(skb);
896}
897
898struct mac80211_hwsim_addr_match_data {
899 u8 addr[ETH_ALEN];
900 bool ret;
901};
902
903static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
904 struct ieee80211_vif *vif)
905{
906 struct mac80211_hwsim_addr_match_data *md = data;
907
908 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
909 md->ret = true;
910}
911
912static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
913 const u8 *addr)
914{
915 struct mac80211_hwsim_addr_match_data md = {
916 .ret = false,
917 };
918
919 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
920 return true;
921
922 memcpy(md.addr, addr, ETH_ALEN);
923
924 ieee80211_iterate_active_interfaces_atomic(data->hw,
925 IEEE80211_IFACE_ITER_NORMAL,
926 mac80211_hwsim_addr_iter,
927 &md);
928
929 return md.ret;
930}
931
932static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
933 struct sk_buff *skb)
934{
935 switch (data->ps) {
936 case PS_DISABLED:
937 return true;
938 case PS_ENABLED:
939 return false;
940 case PS_AUTO_POLL:
941 /* TODO: accept (some) Beacons by default and other frames only
942 * if pending PS-Poll has been sent */
943 return true;
944 case PS_MANUAL_POLL:
945 /* Allow unicast frames to own address if there is a pending
946 * PS-Poll */
947 if (data->ps_poll_pending &&
948 mac80211_hwsim_addr_match(data, skb->data + 4)) {
949 data->ps_poll_pending = false;
950 return true;
951 }
952 return false;
953 }
954
955 return true;
956}
957
958static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
959 struct sk_buff *my_skb,
960 int dst_portid)
961{
962 struct sk_buff *skb;
963 struct mac80211_hwsim_data *data = hw->priv;
964 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
965 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
966 void *msg_head;
967 unsigned int hwsim_flags = 0;
968 int i;
969 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
970 uintptr_t cookie;
971
972 if (data->ps != PS_DISABLED)
973 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
974 /* If the queue contains MAX_QUEUE skb's drop some */
975 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
976 /* Droping until WARN_QUEUE level */
977 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
978 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
979 data->tx_dropped++;
980 }
981 }
982
983 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
984 if (skb == NULL)
985 goto nla_put_failure;
986
987 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
988 HWSIM_CMD_FRAME);
989 if (msg_head == NULL) {
990 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
991 goto nla_put_failure;
992 }
993
994 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
995 ETH_ALEN, data->addresses[1].addr))
996 goto nla_put_failure;
997
998 /* We get the skb->data */
999 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1000 goto nla_put_failure;
1001
1002 /* We get the flags for this transmission, and we translate them to
1003 wmediumd flags */
1004
1005 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1006 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1007
1008 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1009 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1010
1011 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1012 goto nla_put_failure;
1013
1014 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1015 goto nla_put_failure;
1016
1017 /* We get the tx control (rate and retries) info*/
1018
1019 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1020 tx_attempts[i].idx = info->status.rates[i].idx;
1021 tx_attempts[i].count = info->status.rates[i].count;
1022 }
1023
1024 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1025 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1026 tx_attempts))
1027 goto nla_put_failure;
1028
1029 /* We create a cookie to identify this skb */
1030 data->pending_cookie++;
1031 cookie = data->pending_cookie;
1032 info->rate_driver_data[0] = (void *)cookie;
1033 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, cookie))
1034 goto nla_put_failure;
1035
1036 genlmsg_end(skb, msg_head);
1037 if (genlmsg_unicast(&init_net, skb, dst_portid))
1038 goto err_free_txskb;
1039
1040 /* Enqueue the packet */
1041 skb_queue_tail(&data->pending, my_skb);
1042 data->tx_pkts++;
1043 data->tx_bytes += my_skb->len;
1044 return;
1045
1046nla_put_failure:
1047 nlmsg_free(skb);
1048err_free_txskb:
1049 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1050 ieee80211_free_txskb(hw, my_skb);
1051 data->tx_failed++;
1052}
1053
1054static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1055 struct ieee80211_channel *c2)
1056{
1057 if (!c1 || !c2)
1058 return false;
1059
1060 return c1->center_freq == c2->center_freq;
1061}
1062
1063struct tx_iter_data {
1064 struct ieee80211_channel *channel;
1065 bool receive;
1066};
1067
1068static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1069 struct ieee80211_vif *vif)
1070{
1071 struct tx_iter_data *data = _data;
1072
1073 if (!vif->chanctx_conf)
1074 return;
1075
1076 if (!hwsim_chans_compat(data->channel,
1077 rcu_dereference(vif->chanctx_conf)->def.chan))
1078 return;
1079
1080 data->receive = true;
1081}
1082
1083static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1084{
1085 /*
1086 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1087 * e.g. like this:
1088 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1089 * (but you should use a valid OUI, not that)
1090 *
1091 * If anyone wants to 'donate' a radiotap OUI/subns code
1092 * please send a patch removing this #ifdef and changing
1093 * the values accordingly.
1094 */
1095#ifdef HWSIM_RADIOTAP_OUI
1096 struct ieee80211_vendor_radiotap *rtap;
1097
1098 /*
1099 * Note that this code requires the headroom in the SKB
1100 * that was allocated earlier.
1101 */
1102 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1103 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1104 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1105 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1106 rtap->subns = 127;
1107
1108 /*
1109 * Radiotap vendor namespaces can (and should) also be
1110 * split into fields by using the standard radiotap
1111 * presence bitmap mechanism. Use just BIT(0) here for
1112 * the presence bitmap.
1113 */
1114 rtap->present = BIT(0);
1115 /* We have 8 bytes of (dummy) data */
1116 rtap->len = 8;
1117 /* For testing, also require it to be aligned */
1118 rtap->align = 8;
1119 /* And also test that padding works, 4 bytes */
1120 rtap->pad = 4;
1121 /* push the data */
1122 memcpy(rtap->data, "ABCDEFGH", 8);
1123 /* make sure to clear padding, mac80211 doesn't */
1124 memset(rtap->data + 8, 0, 4);
1125
1126 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1127#endif
1128}
1129
1130static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1131 struct sk_buff *skb,
1132 struct ieee80211_channel *chan)
1133{
1134 struct mac80211_hwsim_data *data = hw->priv, *data2;
1135 bool ack = false;
1136 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1137 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1138 struct ieee80211_rx_status rx_status;
1139 u64 now;
1140
1141 memset(&rx_status, 0, sizeof(rx_status));
1142 rx_status.flag |= RX_FLAG_MACTIME_START;
1143 rx_status.freq = chan->center_freq;
1144 rx_status.band = chan->band;
1145 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1146 rx_status.rate_idx =
1147 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1148 rx_status.vht_nss =
1149 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1150 rx_status.flag |= RX_FLAG_VHT;
1151 } else {
1152 rx_status.rate_idx = info->control.rates[0].idx;
1153 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1154 rx_status.flag |= RX_FLAG_HT;
1155 }
1156 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1157 rx_status.flag |= RX_FLAG_40MHZ;
1158 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1159 rx_status.flag |= RX_FLAG_SHORT_GI;
1160 /* TODO: simulate real signal strength (and optional packet loss) */
1161 rx_status.signal = data->power_level - 50;
1162
1163 if (data->ps != PS_DISABLED)
1164 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1165
1166 /* release the skb's source info */
1167 skb_orphan(skb);
1168 skb_dst_drop(skb);
1169 skb->mark = 0;
1170 secpath_reset(skb);
1171 nf_reset(skb);
1172
1173 /*
1174 * Get absolute mactime here so all HWs RX at the "same time", and
1175 * absolute TX time for beacon mactime so the timestamp matches.
1176 * Giving beacons a different mactime than non-beacons looks messy, but
1177 * it helps the Toffset be exact and a ~10us mactime discrepancy
1178 * probably doesn't really matter.
1179 */
1180 if (ieee80211_is_beacon(hdr->frame_control) ||
1181 ieee80211_is_probe_resp(hdr->frame_control))
1182 now = data->abs_bcn_ts;
1183 else
1184 now = mac80211_hwsim_get_tsf_raw();
1185
1186 /* Copy skb to all enabled radios that are on the current frequency */
1187 spin_lock(&hwsim_radio_lock);
1188 list_for_each_entry(data2, &hwsim_radios, list) {
1189 struct sk_buff *nskb;
1190 struct tx_iter_data tx_iter_data = {
1191 .receive = false,
1192 .channel = chan,
1193 };
1194
1195 if (data == data2)
1196 continue;
1197
1198 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1199 !hwsim_ps_rx_ok(data2, skb))
1200 continue;
1201
1202 if (!(data->group & data2->group))
1203 continue;
1204
1205 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1206 !hwsim_chans_compat(chan, data2->channel)) {
1207 ieee80211_iterate_active_interfaces_atomic(
1208 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1209 mac80211_hwsim_tx_iter, &tx_iter_data);
1210 if (!tx_iter_data.receive)
1211 continue;
1212 }
1213
1214 /*
1215 * reserve some space for our vendor and the normal
1216 * radiotap header, since we're copying anyway
1217 */
1218 if (skb->len < PAGE_SIZE && paged_rx) {
1219 struct page *page = alloc_page(GFP_ATOMIC);
1220
1221 if (!page)
1222 continue;
1223
1224 nskb = dev_alloc_skb(128);
1225 if (!nskb) {
1226 __free_page(page);
1227 continue;
1228 }
1229
1230 memcpy(page_address(page), skb->data, skb->len);
1231 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1232 } else {
1233 nskb = skb_copy(skb, GFP_ATOMIC);
1234 if (!nskb)
1235 continue;
1236 }
1237
1238 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1239 ack = true;
1240
1241 rx_status.mactime = now + data2->tsf_offset;
1242
1243 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1244
1245 mac80211_hwsim_add_vendor_rtap(nskb);
1246
1247 data2->rx_pkts++;
1248 data2->rx_bytes += nskb->len;
1249 ieee80211_rx_irqsafe(data2->hw, nskb);
1250 }
1251 spin_unlock(&hwsim_radio_lock);
1252
1253 return ack;
1254}
1255
1256static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1257 struct ieee80211_tx_control *control,
1258 struct sk_buff *skb)
1259{
1260 struct mac80211_hwsim_data *data = hw->priv;
1261 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1262 struct ieee80211_hdr *hdr = (void *)skb->data;
1263 struct ieee80211_chanctx_conf *chanctx_conf;
1264 struct ieee80211_channel *channel;
1265 bool ack;
1266 u32 _portid;
1267
1268 if (WARN_ON(skb->len < 10)) {
1269 /* Should not happen; just a sanity check for addr1 use */
1270 ieee80211_free_txskb(hw, skb);
1271 return;
1272 }
1273
1274 if (!data->use_chanctx) {
1275 channel = data->channel;
1276 } else if (txi->hw_queue == 4) {
1277 channel = data->tmp_chan;
1278 } else {
1279 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1280 if (chanctx_conf)
1281 channel = chanctx_conf->def.chan;
1282 else
1283 channel = NULL;
1284 }
1285
1286 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1287 ieee80211_free_txskb(hw, skb);
1288 return;
1289 }
1290
1291 if (data->idle && !data->tmp_chan) {
1292 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1293 ieee80211_free_txskb(hw, skb);
1294 return;
1295 }
1296
1297 if (txi->control.vif)
1298 hwsim_check_magic(txi->control.vif);
1299 if (control->sta)
1300 hwsim_check_sta_magic(control->sta);
1301
1302 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1303 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1304 txi->control.rates,
1305 ARRAY_SIZE(txi->control.rates));
1306
1307 txi->rate_driver_data[0] = channel;
1308
1309 if (skb->len >= 24 + 8 &&
1310 ieee80211_is_probe_resp(hdr->frame_control)) {
1311 /* fake header transmission time */
1312 struct ieee80211_mgmt *mgmt;
1313 struct ieee80211_rate *txrate;
1314 u64 ts;
1315
1316 mgmt = (struct ieee80211_mgmt *)skb->data;
1317 txrate = ieee80211_get_tx_rate(hw, txi);
1318 ts = mac80211_hwsim_get_tsf_raw();
1319 mgmt->u.probe_resp.timestamp =
1320 cpu_to_le64(ts + data->tsf_offset +
1321 24 * 8 * 10 / txrate->bitrate);
1322 }
1323
1324 mac80211_hwsim_monitor_rx(hw, skb, channel);
1325
1326 /* wmediumd mode check */
1327 _portid = ACCESS_ONCE(wmediumd_portid);
1328
1329 if (_portid)
1330 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1331
1332 /* NO wmediumd detected, perfect medium simulation */
1333 data->tx_pkts++;
1334 data->tx_bytes += skb->len;
1335 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1336
1337 if (ack && skb->len >= 16)
1338 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1339
1340 ieee80211_tx_info_clear_status(txi);
1341
1342 /* frame was transmitted at most favorable rate at first attempt */
1343 txi->control.rates[0].count = 1;
1344 txi->control.rates[1].idx = -1;
1345
1346 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1347 txi->flags |= IEEE80211_TX_STAT_ACK;
1348 ieee80211_tx_status_irqsafe(hw, skb);
1349}
1350
1351
1352static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1353{
1354 struct mac80211_hwsim_data *data = hw->priv;
1355 wiphy_debug(hw->wiphy, "%s\n", __func__);
1356 data->started = true;
1357 return 0;
1358}
1359
1360
1361static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1362{
1363 struct mac80211_hwsim_data *data = hw->priv;
1364 data->started = false;
1365 tasklet_hrtimer_cancel(&data->beacon_timer);
1366 wiphy_debug(hw->wiphy, "%s\n", __func__);
1367}
1368
1369
1370static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1371 struct ieee80211_vif *vif)
1372{
1373 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1374 __func__, ieee80211_vif_type_p2p(vif),
1375 vif->addr);
1376 hwsim_set_magic(vif);
1377
1378 vif->cab_queue = 0;
1379 vif->hw_queue[IEEE80211_AC_VO] = 0;
1380 vif->hw_queue[IEEE80211_AC_VI] = 1;
1381 vif->hw_queue[IEEE80211_AC_BE] = 2;
1382 vif->hw_queue[IEEE80211_AC_BK] = 3;
1383
1384 return 0;
1385}
1386
1387
1388static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1389 struct ieee80211_vif *vif,
1390 enum nl80211_iftype newtype,
1391 bool newp2p)
1392{
1393 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1394 wiphy_debug(hw->wiphy,
1395 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1396 __func__, ieee80211_vif_type_p2p(vif),
1397 newtype, vif->addr);
1398 hwsim_check_magic(vif);
1399
1400 /*
1401 * interface may change from non-AP to AP in
1402 * which case this needs to be set up again
1403 */
1404 vif->cab_queue = 0;
1405
1406 return 0;
1407}
1408
1409static void mac80211_hwsim_remove_interface(
1410 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1411{
1412 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1413 __func__, ieee80211_vif_type_p2p(vif),
1414 vif->addr);
1415 hwsim_check_magic(vif);
1416 hwsim_clear_magic(vif);
1417}
1418
1419static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1420 struct sk_buff *skb,
1421 struct ieee80211_channel *chan)
1422{
1423 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1424
1425 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1426 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1427 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1428 txi->control.rates,
1429 ARRAY_SIZE(txi->control.rates));
1430 }
1431
1432 mac80211_hwsim_monitor_rx(hw, skb, chan);
1433
1434 if (_pid)
1435 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1436
1437 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1438 dev_kfree_skb(skb);
1439}
1440
1441static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1442 struct ieee80211_vif *vif)
1443{
1444 struct mac80211_hwsim_data *data = arg;
1445 struct ieee80211_hw *hw = data->hw;
1446 struct ieee80211_tx_info *info;
1447 struct ieee80211_rate *txrate;
1448 struct ieee80211_mgmt *mgmt;
1449 struct sk_buff *skb;
1450
1451 hwsim_check_magic(vif);
1452
1453 if (vif->type != NL80211_IFTYPE_AP &&
1454 vif->type != NL80211_IFTYPE_MESH_POINT &&
1455 vif->type != NL80211_IFTYPE_ADHOC)
1456 return;
1457
1458 skb = ieee80211_beacon_get(hw, vif);
1459 if (skb == NULL)
1460 return;
1461 info = IEEE80211_SKB_CB(skb);
1462 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1463 ieee80211_get_tx_rates(vif, NULL, skb,
1464 info->control.rates,
1465 ARRAY_SIZE(info->control.rates));
1466
1467 txrate = ieee80211_get_tx_rate(hw, info);
1468
1469 mgmt = (struct ieee80211_mgmt *) skb->data;
1470 /* fake header transmission time */
1471 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1472 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1473 data->tsf_offset +
1474 24 * 8 * 10 / txrate->bitrate);
1475
1476 mac80211_hwsim_tx_frame(hw, skb,
1477 rcu_dereference(vif->chanctx_conf)->def.chan);
1478
1479 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1480 ieee80211_csa_finish(vif);
1481}
1482
1483static enum hrtimer_restart
1484mac80211_hwsim_beacon(struct hrtimer *timer)
1485{
1486 struct mac80211_hwsim_data *data =
1487 container_of(timer, struct mac80211_hwsim_data,
1488 beacon_timer.timer);
1489 struct ieee80211_hw *hw = data->hw;
1490 u64 bcn_int = data->beacon_int;
1491 ktime_t next_bcn;
1492
1493 if (!data->started)
1494 goto out;
1495
1496 ieee80211_iterate_active_interfaces_atomic(
1497 hw, IEEE80211_IFACE_ITER_NORMAL,
1498 mac80211_hwsim_beacon_tx, data);
1499
1500 /* beacon at new TBTT + beacon interval */
1501 if (data->bcn_delta) {
1502 bcn_int -= data->bcn_delta;
1503 data->bcn_delta = 0;
1504 }
1505
1506 next_bcn = ktime_add(hrtimer_get_expires(timer),
1507 ns_to_ktime(bcn_int * 1000));
1508 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1509out:
1510 return HRTIMER_NORESTART;
1511}
1512
1513static const char * const hwsim_chanwidths[] = {
1514 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1515 [NL80211_CHAN_WIDTH_20] = "ht20",
1516 [NL80211_CHAN_WIDTH_40] = "ht40",
1517 [NL80211_CHAN_WIDTH_80] = "vht80",
1518 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1519 [NL80211_CHAN_WIDTH_160] = "vht160",
1520};
1521
1522static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1523{
1524 struct mac80211_hwsim_data *data = hw->priv;
1525 struct ieee80211_conf *conf = &hw->conf;
1526 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1527 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1528 [IEEE80211_SMPS_OFF] = "off",
1529 [IEEE80211_SMPS_STATIC] = "static",
1530 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1531 };
1532
1533 if (conf->chandef.chan)
1534 wiphy_debug(hw->wiphy,
1535 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1536 __func__,
1537 conf->chandef.chan->center_freq,
1538 conf->chandef.center_freq1,
1539 conf->chandef.center_freq2,
1540 hwsim_chanwidths[conf->chandef.width],
1541 !!(conf->flags & IEEE80211_CONF_IDLE),
1542 !!(conf->flags & IEEE80211_CONF_PS),
1543 smps_modes[conf->smps_mode]);
1544 else
1545 wiphy_debug(hw->wiphy,
1546 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1547 __func__,
1548 !!(conf->flags & IEEE80211_CONF_IDLE),
1549 !!(conf->flags & IEEE80211_CONF_PS),
1550 smps_modes[conf->smps_mode]);
1551
1552 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1553
1554 data->channel = conf->chandef.chan;
1555
1556 WARN_ON(data->channel && data->use_chanctx);
1557
1558 data->power_level = conf->power_level;
1559 if (!data->started || !data->beacon_int)
1560 tasklet_hrtimer_cancel(&data->beacon_timer);
1561 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1562 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1563 u32 bcn_int = data->beacon_int;
1564 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1565
1566 tasklet_hrtimer_start(&data->beacon_timer,
1567 ns_to_ktime(until_tbtt * 1000),
1568 HRTIMER_MODE_REL);
1569 }
1570
1571 return 0;
1572}
1573
1574
1575static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1576 unsigned int changed_flags,
1577 unsigned int *total_flags,u64 multicast)
1578{
1579 struct mac80211_hwsim_data *data = hw->priv;
1580
1581 wiphy_debug(hw->wiphy, "%s\n", __func__);
1582
1583 data->rx_filter = 0;
1584 if (*total_flags & FIF_ALLMULTI)
1585 data->rx_filter |= FIF_ALLMULTI;
1586
1587 *total_flags = data->rx_filter;
1588}
1589
1590static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1591 struct ieee80211_vif *vif)
1592{
1593 unsigned int *count = data;
1594 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1595
1596 if (vp->bcn_en)
1597 (*count)++;
1598}
1599
1600static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1601 struct ieee80211_vif *vif,
1602 struct ieee80211_bss_conf *info,
1603 u32 changed)
1604{
1605 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1606 struct mac80211_hwsim_data *data = hw->priv;
1607
1608 hwsim_check_magic(vif);
1609
1610 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1611 __func__, changed, vif->addr);
1612
1613 if (changed & BSS_CHANGED_BSSID) {
1614 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1615 __func__, info->bssid);
1616 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1617 }
1618
1619 if (changed & BSS_CHANGED_ASSOC) {
1620 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1621 info->assoc, info->aid);
1622 vp->assoc = info->assoc;
1623 vp->aid = info->aid;
1624 }
1625
1626 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1627 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1628 info->enable_beacon, info->beacon_int);
1629 vp->bcn_en = info->enable_beacon;
1630 if (data->started &&
1631 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1632 info->enable_beacon) {
1633 u64 tsf, until_tbtt;
1634 u32 bcn_int;
1635 data->beacon_int = info->beacon_int * 1024;
1636 tsf = mac80211_hwsim_get_tsf(hw, vif);
1637 bcn_int = data->beacon_int;
1638 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1639 tasklet_hrtimer_start(&data->beacon_timer,
1640 ns_to_ktime(until_tbtt * 1000),
1641 HRTIMER_MODE_REL);
1642 } else if (!info->enable_beacon) {
1643 unsigned int count = 0;
1644 ieee80211_iterate_active_interfaces_atomic(
1645 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1646 mac80211_hwsim_bcn_en_iter, &count);
1647 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1648 count);
1649 if (count == 0) {
1650 tasklet_hrtimer_cancel(&data->beacon_timer);
1651 data->beacon_int = 0;
1652 }
1653 }
1654 }
1655
1656 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1657 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1658 info->use_cts_prot);
1659 }
1660
1661 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1662 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1663 info->use_short_preamble);
1664 }
1665
1666 if (changed & BSS_CHANGED_ERP_SLOT) {
1667 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1668 }
1669
1670 if (changed & BSS_CHANGED_HT) {
1671 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1672 info->ht_operation_mode);
1673 }
1674
1675 if (changed & BSS_CHANGED_BASIC_RATES) {
1676 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1677 (unsigned long long) info->basic_rates);
1678 }
1679
1680 if (changed & BSS_CHANGED_TXPOWER)
1681 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1682}
1683
1684static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1685 struct ieee80211_vif *vif,
1686 struct ieee80211_sta *sta)
1687{
1688 hwsim_check_magic(vif);
1689 hwsim_set_sta_magic(sta);
1690
1691 return 0;
1692}
1693
1694static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1695 struct ieee80211_vif *vif,
1696 struct ieee80211_sta *sta)
1697{
1698 hwsim_check_magic(vif);
1699 hwsim_clear_sta_magic(sta);
1700
1701 return 0;
1702}
1703
1704static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1705 struct ieee80211_vif *vif,
1706 enum sta_notify_cmd cmd,
1707 struct ieee80211_sta *sta)
1708{
1709 hwsim_check_magic(vif);
1710
1711 switch (cmd) {
1712 case STA_NOTIFY_SLEEP:
1713 case STA_NOTIFY_AWAKE:
1714 /* TODO: make good use of these flags */
1715 break;
1716 default:
1717 WARN(1, "Invalid sta notify: %d\n", cmd);
1718 break;
1719 }
1720}
1721
1722static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1723 struct ieee80211_sta *sta,
1724 bool set)
1725{
1726 hwsim_check_sta_magic(sta);
1727 return 0;
1728}
1729
1730static int mac80211_hwsim_conf_tx(
1731 struct ieee80211_hw *hw,
1732 struct ieee80211_vif *vif, u16 queue,
1733 const struct ieee80211_tx_queue_params *params)
1734{
1735 wiphy_debug(hw->wiphy,
1736 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1737 __func__, queue,
1738 params->txop, params->cw_min,
1739 params->cw_max, params->aifs);
1740 return 0;
1741}
1742
1743static int mac80211_hwsim_get_survey(
1744 struct ieee80211_hw *hw, int idx,
1745 struct survey_info *survey)
1746{
1747 struct ieee80211_conf *conf = &hw->conf;
1748
1749 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1750
1751 if (idx != 0)
1752 return -ENOENT;
1753
1754 /* Current channel */
1755 survey->channel = conf->chandef.chan;
1756
1757 /*
1758 * Magically conjured noise level --- this is only ok for simulated hardware.
1759 *
1760 * A real driver which cannot determine the real channel noise MUST NOT
1761 * report any noise, especially not a magically conjured one :-)
1762 */
1763 survey->filled = SURVEY_INFO_NOISE_DBM;
1764 survey->noise = -92;
1765
1766 return 0;
1767}
1768
1769#ifdef CONFIG_NL80211_TESTMODE
1770/*
1771 * This section contains example code for using netlink
1772 * attributes with the testmode command in nl80211.
1773 */
1774
1775/* These enums need to be kept in sync with userspace */
1776enum hwsim_testmode_attr {
1777 __HWSIM_TM_ATTR_INVALID = 0,
1778 HWSIM_TM_ATTR_CMD = 1,
1779 HWSIM_TM_ATTR_PS = 2,
1780
1781 /* keep last */
1782 __HWSIM_TM_ATTR_AFTER_LAST,
1783 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1784};
1785
1786enum hwsim_testmode_cmd {
1787 HWSIM_TM_CMD_SET_PS = 0,
1788 HWSIM_TM_CMD_GET_PS = 1,
1789 HWSIM_TM_CMD_STOP_QUEUES = 2,
1790 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1791};
1792
1793static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1794 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1795 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1796};
1797
1798static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1799 struct ieee80211_vif *vif,
1800 void *data, int len)
1801{
1802 struct mac80211_hwsim_data *hwsim = hw->priv;
1803 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1804 struct sk_buff *skb;
1805 int err, ps;
1806
1807 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1808 hwsim_testmode_policy);
1809 if (err)
1810 return err;
1811
1812 if (!tb[HWSIM_TM_ATTR_CMD])
1813 return -EINVAL;
1814
1815 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1816 case HWSIM_TM_CMD_SET_PS:
1817 if (!tb[HWSIM_TM_ATTR_PS])
1818 return -EINVAL;
1819 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1820 return hwsim_fops_ps_write(hwsim, ps);
1821 case HWSIM_TM_CMD_GET_PS:
1822 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1823 nla_total_size(sizeof(u32)));
1824 if (!skb)
1825 return -ENOMEM;
1826 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1827 goto nla_put_failure;
1828 return cfg80211_testmode_reply(skb);
1829 case HWSIM_TM_CMD_STOP_QUEUES:
1830 ieee80211_stop_queues(hw);
1831 return 0;
1832 case HWSIM_TM_CMD_WAKE_QUEUES:
1833 ieee80211_wake_queues(hw);
1834 return 0;
1835 default:
1836 return -EOPNOTSUPP;
1837 }
1838
1839 nla_put_failure:
1840 kfree_skb(skb);
1841 return -ENOBUFS;
1842}
1843#endif
1844
1845static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1846 struct ieee80211_vif *vif,
1847 struct ieee80211_ampdu_params *params)
1848{
1849 struct ieee80211_sta *sta = params->sta;
1850 enum ieee80211_ampdu_mlme_action action = params->action;
1851 u16 tid = params->tid;
1852
1853 switch (action) {
1854 case IEEE80211_AMPDU_TX_START:
1855 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1856 break;
1857 case IEEE80211_AMPDU_TX_STOP_CONT:
1858 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1859 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1860 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1861 break;
1862 case IEEE80211_AMPDU_TX_OPERATIONAL:
1863 break;
1864 case IEEE80211_AMPDU_RX_START:
1865 case IEEE80211_AMPDU_RX_STOP:
1866 break;
1867 default:
1868 return -EOPNOTSUPP;
1869 }
1870
1871 return 0;
1872}
1873
1874static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1875 struct ieee80211_vif *vif,
1876 u32 queues, bool drop)
1877{
1878 /* Not implemented, queues only on kernel side */
1879}
1880
1881static void hw_scan_work(struct work_struct *work)
1882{
1883 struct mac80211_hwsim_data *hwsim =
1884 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1885 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1886 int dwell, i;
1887
1888 mutex_lock(&hwsim->mutex);
1889 if (hwsim->scan_chan_idx >= req->n_channels) {
1890 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1891 ieee80211_scan_completed(hwsim->hw, false);
1892 hwsim->hw_scan_request = NULL;
1893 hwsim->hw_scan_vif = NULL;
1894 hwsim->tmp_chan = NULL;
1895 mutex_unlock(&hwsim->mutex);
1896 return;
1897 }
1898
1899 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1900 req->channels[hwsim->scan_chan_idx]->center_freq);
1901
1902 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1903 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1904 IEEE80211_CHAN_RADAR) ||
1905 !req->n_ssids) {
1906 dwell = 120;
1907 } else {
1908 dwell = 30;
1909 /* send probes */
1910 for (i = 0; i < req->n_ssids; i++) {
1911 struct sk_buff *probe;
1912
1913 probe = ieee80211_probereq_get(hwsim->hw,
1914 hwsim->scan_addr,
1915 req->ssids[i].ssid,
1916 req->ssids[i].ssid_len,
1917 req->ie_len);
1918 if (!probe)
1919 continue;
1920
1921 if (req->ie_len)
1922 memcpy(skb_put(probe, req->ie_len), req->ie,
1923 req->ie_len);
1924
1925 local_bh_disable();
1926 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1927 hwsim->tmp_chan);
1928 local_bh_enable();
1929 }
1930 }
1931 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1932 msecs_to_jiffies(dwell));
1933 hwsim->scan_chan_idx++;
1934 mutex_unlock(&hwsim->mutex);
1935}
1936
1937static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1938 struct ieee80211_vif *vif,
1939 struct ieee80211_scan_request *hw_req)
1940{
1941 struct mac80211_hwsim_data *hwsim = hw->priv;
1942 struct cfg80211_scan_request *req = &hw_req->req;
1943
1944 mutex_lock(&hwsim->mutex);
1945 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1946 mutex_unlock(&hwsim->mutex);
1947 return -EBUSY;
1948 }
1949 hwsim->hw_scan_request = req;
1950 hwsim->hw_scan_vif = vif;
1951 hwsim->scan_chan_idx = 0;
1952 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1953 get_random_mask_addr(hwsim->scan_addr,
1954 hw_req->req.mac_addr,
1955 hw_req->req.mac_addr_mask);
1956 else
1957 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1958 mutex_unlock(&hwsim->mutex);
1959
1960 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1961
1962 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1963
1964 return 0;
1965}
1966
1967static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1968 struct ieee80211_vif *vif)
1969{
1970 struct mac80211_hwsim_data *hwsim = hw->priv;
1971
1972 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1973
1974 cancel_delayed_work_sync(&hwsim->hw_scan);
1975
1976 mutex_lock(&hwsim->mutex);
1977 ieee80211_scan_completed(hwsim->hw, true);
1978 hwsim->tmp_chan = NULL;
1979 hwsim->hw_scan_request = NULL;
1980 hwsim->hw_scan_vif = NULL;
1981 mutex_unlock(&hwsim->mutex);
1982}
1983
1984static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1985 struct ieee80211_vif *vif,
1986 const u8 *mac_addr)
1987{
1988 struct mac80211_hwsim_data *hwsim = hw->priv;
1989
1990 mutex_lock(&hwsim->mutex);
1991
1992 if (hwsim->scanning) {
1993 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1994 goto out;
1995 }
1996
1997 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1998
1999 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2000 hwsim->scanning = true;
2001
2002out:
2003 mutex_unlock(&hwsim->mutex);
2004}
2005
2006static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2007 struct ieee80211_vif *vif)
2008{
2009 struct mac80211_hwsim_data *hwsim = hw->priv;
2010
2011 mutex_lock(&hwsim->mutex);
2012
2013 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2014 hwsim->scanning = false;
2015 eth_zero_addr(hwsim->scan_addr);
2016
2017 mutex_unlock(&hwsim->mutex);
2018}
2019
2020static void hw_roc_start(struct work_struct *work)
2021{
2022 struct mac80211_hwsim_data *hwsim =
2023 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2024
2025 mutex_lock(&hwsim->mutex);
2026
2027 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2028 hwsim->tmp_chan = hwsim->roc_chan;
2029 ieee80211_ready_on_channel(hwsim->hw);
2030
2031 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2032 msecs_to_jiffies(hwsim->roc_duration));
2033
2034 mutex_unlock(&hwsim->mutex);
2035}
2036
2037static void hw_roc_done(struct work_struct *work)
2038{
2039 struct mac80211_hwsim_data *hwsim =
2040 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2041
2042 mutex_lock(&hwsim->mutex);
2043 ieee80211_remain_on_channel_expired(hwsim->hw);
2044 hwsim->tmp_chan = NULL;
2045 mutex_unlock(&hwsim->mutex);
2046
2047 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2048}
2049
2050static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2051 struct ieee80211_vif *vif,
2052 struct ieee80211_channel *chan,
2053 int duration,
2054 enum ieee80211_roc_type type)
2055{
2056 struct mac80211_hwsim_data *hwsim = hw->priv;
2057
2058 mutex_lock(&hwsim->mutex);
2059 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2060 mutex_unlock(&hwsim->mutex);
2061 return -EBUSY;
2062 }
2063
2064 hwsim->roc_chan = chan;
2065 hwsim->roc_duration = duration;
2066 mutex_unlock(&hwsim->mutex);
2067
2068 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2069 chan->center_freq, duration);
2070 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2071
2072 return 0;
2073}
2074
2075static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2076{
2077 struct mac80211_hwsim_data *hwsim = hw->priv;
2078
2079 cancel_delayed_work_sync(&hwsim->roc_start);
2080 cancel_delayed_work_sync(&hwsim->roc_done);
2081
2082 mutex_lock(&hwsim->mutex);
2083 hwsim->tmp_chan = NULL;
2084 mutex_unlock(&hwsim->mutex);
2085
2086 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2087
2088 return 0;
2089}
2090
2091static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2092 struct ieee80211_chanctx_conf *ctx)
2093{
2094 hwsim_set_chanctx_magic(ctx);
2095 wiphy_debug(hw->wiphy,
2096 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2097 ctx->def.chan->center_freq, ctx->def.width,
2098 ctx->def.center_freq1, ctx->def.center_freq2);
2099 return 0;
2100}
2101
2102static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2103 struct ieee80211_chanctx_conf *ctx)
2104{
2105 wiphy_debug(hw->wiphy,
2106 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2107 ctx->def.chan->center_freq, ctx->def.width,
2108 ctx->def.center_freq1, ctx->def.center_freq2);
2109 hwsim_check_chanctx_magic(ctx);
2110 hwsim_clear_chanctx_magic(ctx);
2111}
2112
2113static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2114 struct ieee80211_chanctx_conf *ctx,
2115 u32 changed)
2116{
2117 hwsim_check_chanctx_magic(ctx);
2118 wiphy_debug(hw->wiphy,
2119 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2120 ctx->def.chan->center_freq, ctx->def.width,
2121 ctx->def.center_freq1, ctx->def.center_freq2);
2122}
2123
2124static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2125 struct ieee80211_vif *vif,
2126 struct ieee80211_chanctx_conf *ctx)
2127{
2128 hwsim_check_magic(vif);
2129 hwsim_check_chanctx_magic(ctx);
2130
2131 return 0;
2132}
2133
2134static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2135 struct ieee80211_vif *vif,
2136 struct ieee80211_chanctx_conf *ctx)
2137{
2138 hwsim_check_magic(vif);
2139 hwsim_check_chanctx_magic(ctx);
2140}
2141
2142static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2143 "tx_pkts_nic",
2144 "tx_bytes_nic",
2145 "rx_pkts_nic",
2146 "rx_bytes_nic",
2147 "d_tx_dropped",
2148 "d_tx_failed",
2149 "d_ps_mode",
2150 "d_group",
2151 "d_tx_power",
2152};
2153
2154#define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2155
2156static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2157 struct ieee80211_vif *vif,
2158 u32 sset, u8 *data)
2159{
2160 if (sset == ETH_SS_STATS)
2161 memcpy(data, *mac80211_hwsim_gstrings_stats,
2162 sizeof(mac80211_hwsim_gstrings_stats));
2163}
2164
2165static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2166 struct ieee80211_vif *vif, int sset)
2167{
2168 if (sset == ETH_SS_STATS)
2169 return MAC80211_HWSIM_SSTATS_LEN;
2170 return 0;
2171}
2172
2173static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2174 struct ieee80211_vif *vif,
2175 struct ethtool_stats *stats, u64 *data)
2176{
2177 struct mac80211_hwsim_data *ar = hw->priv;
2178 int i = 0;
2179
2180 data[i++] = ar->tx_pkts;
2181 data[i++] = ar->tx_bytes;
2182 data[i++] = ar->rx_pkts;
2183 data[i++] = ar->rx_bytes;
2184 data[i++] = ar->tx_dropped;
2185 data[i++] = ar->tx_failed;
2186 data[i++] = ar->ps;
2187 data[i++] = ar->group;
2188 data[i++] = ar->power_level;
2189
2190 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2191}
2192
2193static const struct ieee80211_ops mac80211_hwsim_ops = {
2194 .tx = mac80211_hwsim_tx,
2195 .start = mac80211_hwsim_start,
2196 .stop = mac80211_hwsim_stop,
2197 .add_interface = mac80211_hwsim_add_interface,
2198 .change_interface = mac80211_hwsim_change_interface,
2199 .remove_interface = mac80211_hwsim_remove_interface,
2200 .config = mac80211_hwsim_config,
2201 .configure_filter = mac80211_hwsim_configure_filter,
2202 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2203 .sta_add = mac80211_hwsim_sta_add,
2204 .sta_remove = mac80211_hwsim_sta_remove,
2205 .sta_notify = mac80211_hwsim_sta_notify,
2206 .set_tim = mac80211_hwsim_set_tim,
2207 .conf_tx = mac80211_hwsim_conf_tx,
2208 .get_survey = mac80211_hwsim_get_survey,
2209 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2210 .ampdu_action = mac80211_hwsim_ampdu_action,
2211 .sw_scan_start = mac80211_hwsim_sw_scan,
2212 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2213 .flush = mac80211_hwsim_flush,
2214 .get_tsf = mac80211_hwsim_get_tsf,
2215 .set_tsf = mac80211_hwsim_set_tsf,
2216 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2217 .get_et_stats = mac80211_hwsim_get_et_stats,
2218 .get_et_strings = mac80211_hwsim_get_et_strings,
2219};
2220
2221static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2222
2223struct hwsim_new_radio_params {
2224 unsigned int channels;
2225 const char *reg_alpha2;
2226 const struct ieee80211_regdomain *regd;
2227 bool reg_strict;
2228 bool p2p_device;
2229 bool use_chanctx;
2230 bool destroy_on_close;
2231 const char *hwname;
2232 bool no_vif;
2233};
2234
2235static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2236 struct genl_info *info)
2237{
2238 if (info)
2239 genl_notify(&hwsim_genl_family, mcast_skb, info,
2240 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2241 else
2242 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2243 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2244}
2245
2246static int append_radio_msg(struct sk_buff *skb, int id,
2247 struct hwsim_new_radio_params *param)
2248{
2249 int ret;
2250
2251 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2252 if (ret < 0)
2253 return ret;
2254
2255 if (param->channels) {
2256 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2257 if (ret < 0)
2258 return ret;
2259 }
2260
2261 if (param->reg_alpha2) {
2262 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2263 param->reg_alpha2);
2264 if (ret < 0)
2265 return ret;
2266 }
2267
2268 if (param->regd) {
2269 int i;
2270
2271 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2272 if (hwsim_world_regdom_custom[i] != param->regd)
2273 continue;
2274
2275 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2276 if (ret < 0)
2277 return ret;
2278 break;
2279 }
2280 }
2281
2282 if (param->reg_strict) {
2283 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2284 if (ret < 0)
2285 return ret;
2286 }
2287
2288 if (param->p2p_device) {
2289 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2290 if (ret < 0)
2291 return ret;
2292 }
2293
2294 if (param->use_chanctx) {
2295 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2296 if (ret < 0)
2297 return ret;
2298 }
2299
2300 if (param->hwname) {
2301 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2302 strlen(param->hwname), param->hwname);
2303 if (ret < 0)
2304 return ret;
2305 }
2306
2307 return 0;
2308}
2309
2310static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2311 struct hwsim_new_radio_params *param)
2312{
2313 struct sk_buff *mcast_skb;
2314 void *data;
2315
2316 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2317 if (!mcast_skb)
2318 return;
2319
2320 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2321 HWSIM_CMD_NEW_RADIO);
2322 if (!data)
2323 goto out_err;
2324
2325 if (append_radio_msg(mcast_skb, id, param) < 0)
2326 goto out_err;
2327
2328 genlmsg_end(mcast_skb, data);
2329
2330 hwsim_mcast_config_msg(mcast_skb, info);
2331 return;
2332
2333out_err:
2334 genlmsg_cancel(mcast_skb, data);
2335 nlmsg_free(mcast_skb);
2336}
2337
2338static int mac80211_hwsim_new_radio(struct genl_info *info,
2339 struct hwsim_new_radio_params *param)
2340{
2341 int err;
2342 u8 addr[ETH_ALEN];
2343 struct mac80211_hwsim_data *data;
2344 struct ieee80211_hw *hw;
2345 enum ieee80211_band band;
2346 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2347 int idx;
2348
2349 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2350 return -EINVAL;
2351
2352 spin_lock_bh(&hwsim_radio_lock);
2353 idx = hwsim_radio_idx++;
2354 spin_unlock_bh(&hwsim_radio_lock);
2355
2356 if (param->use_chanctx)
2357 ops = &mac80211_hwsim_mchan_ops;
2358 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2359 if (!hw) {
2360 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2361 err = -ENOMEM;
2362 goto failed;
2363 }
2364 data = hw->priv;
2365 data->hw = hw;
2366
2367 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2368 if (IS_ERR(data->dev)) {
2369 printk(KERN_DEBUG
2370 "mac80211_hwsim: device_create failed (%ld)\n",
2371 PTR_ERR(data->dev));
2372 err = -ENOMEM;
2373 goto failed_drvdata;
2374 }
2375 data->dev->driver = &mac80211_hwsim_driver.driver;
2376 err = device_bind_driver(data->dev);
2377 if (err != 0) {
2378 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2379 err);
2380 goto failed_bind;
2381 }
2382
2383 skb_queue_head_init(&data->pending);
2384
2385 SET_IEEE80211_DEV(hw, data->dev);
2386 eth_zero_addr(addr);
2387 addr[0] = 0x02;
2388 addr[3] = idx >> 8;
2389 addr[4] = idx;
2390 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2391 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2392 data->addresses[1].addr[0] |= 0x40;
2393 hw->wiphy->n_addresses = 2;
2394 hw->wiphy->addresses = data->addresses;
2395
2396 data->channels = param->channels;
2397 data->use_chanctx = param->use_chanctx;
2398 data->idx = idx;
2399 data->destroy_on_close = param->destroy_on_close;
2400 if (info)
2401 data->portid = info->snd_portid;
2402
2403 if (data->use_chanctx) {
2404 hw->wiphy->max_scan_ssids = 255;
2405 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2406 hw->wiphy->max_remain_on_channel_duration = 1000;
2407 /* For channels > 1 DFS is not allowed */
2408 hw->wiphy->n_iface_combinations = 1;
2409 hw->wiphy->iface_combinations = &data->if_combination;
2410 if (param->p2p_device)
2411 data->if_combination = hwsim_if_comb_p2p_dev[0];
2412 else
2413 data->if_combination = hwsim_if_comb[0];
2414 data->if_combination.num_different_channels = data->channels;
2415 } else if (param->p2p_device) {
2416 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2417 hw->wiphy->n_iface_combinations =
2418 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2419 } else {
2420 hw->wiphy->iface_combinations = hwsim_if_comb;
2421 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2422 }
2423
2424 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2425 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2426 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2427
2428 hw->queues = 5;
2429 hw->offchannel_tx_hw_queue = 4;
2430 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2431 BIT(NL80211_IFTYPE_AP) |
2432 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2433 BIT(NL80211_IFTYPE_P2P_GO) |
2434 BIT(NL80211_IFTYPE_ADHOC) |
2435 BIT(NL80211_IFTYPE_MESH_POINT);
2436
2437 if (param->p2p_device)
2438 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2439
2440 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2441 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2442 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2443 ieee80211_hw_set(hw, QUEUE_CONTROL);
2444 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2445 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2446 ieee80211_hw_set(hw, MFP_CAPABLE);
2447 ieee80211_hw_set(hw, SIGNAL_DBM);
2448 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2449 if (rctbl)
2450 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2451
2452 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2453 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2454 WIPHY_FLAG_AP_UAPSD |
2455 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2456 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2457 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2458 NL80211_FEATURE_STATIC_SMPS |
2459 NL80211_FEATURE_DYNAMIC_SMPS |
2460 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2461 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2462
2463 /* ask mac80211 to reserve space for magic */
2464 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2465 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2466 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2467
2468 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2469 sizeof(hwsim_channels_2ghz));
2470 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2471 sizeof(hwsim_channels_5ghz));
2472 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2473
2474 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2475 struct ieee80211_supported_band *sband = &data->bands[band];
2476 switch (band) {
2477 case IEEE80211_BAND_2GHZ:
2478 sband->channels = data->channels_2ghz;
2479 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2480 sband->bitrates = data->rates;
2481 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2482 break;
2483 case IEEE80211_BAND_5GHZ:
2484 sband->channels = data->channels_5ghz;
2485 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2486 sband->bitrates = data->rates + 4;
2487 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2488
2489 sband->vht_cap.vht_supported = true;
2490 sband->vht_cap.cap =
2491 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2492 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2493 IEEE80211_VHT_CAP_RXLDPC |
2494 IEEE80211_VHT_CAP_SHORT_GI_80 |
2495 IEEE80211_VHT_CAP_SHORT_GI_160 |
2496 IEEE80211_VHT_CAP_TXSTBC |
2497 IEEE80211_VHT_CAP_RXSTBC_1 |
2498 IEEE80211_VHT_CAP_RXSTBC_2 |
2499 IEEE80211_VHT_CAP_RXSTBC_3 |
2500 IEEE80211_VHT_CAP_RXSTBC_4 |
2501 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2502 sband->vht_cap.vht_mcs.rx_mcs_map =
2503 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2504 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2505 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2506 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2507 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2508 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2509 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2510 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2511 sband->vht_cap.vht_mcs.tx_mcs_map =
2512 sband->vht_cap.vht_mcs.rx_mcs_map;
2513 break;
2514 default:
2515 continue;
2516 }
2517
2518 sband->ht_cap.ht_supported = true;
2519 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2520 IEEE80211_HT_CAP_GRN_FLD |
2521 IEEE80211_HT_CAP_SGI_20 |
2522 IEEE80211_HT_CAP_SGI_40 |
2523 IEEE80211_HT_CAP_DSSSCCK40;
2524 sband->ht_cap.ampdu_factor = 0x3;
2525 sband->ht_cap.ampdu_density = 0x6;
2526 memset(&sband->ht_cap.mcs, 0,
2527 sizeof(sband->ht_cap.mcs));
2528 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2529 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2530 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2531
2532 hw->wiphy->bands[band] = sband;
2533 }
2534
2535 /* By default all radios belong to the first group */
2536 data->group = 1;
2537 mutex_init(&data->mutex);
2538
2539 /* Enable frame retransmissions for lossy channels */
2540 hw->max_rates = 4;
2541 hw->max_rate_tries = 11;
2542
2543 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2544 hw->wiphy->n_vendor_commands =
2545 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2546 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2547 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2548
2549 if (param->reg_strict)
2550 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2551 if (param->regd) {
2552 data->regd = param->regd;
2553 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2554 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2555 /* give the regulatory workqueue a chance to run */
2556 schedule_timeout_interruptible(1);
2557 }
2558
2559 if (param->no_vif)
2560 ieee80211_hw_set(hw, NO_AUTO_VIF);
2561
2562 err = ieee80211_register_hw(hw);
2563 if (err < 0) {
2564 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2565 err);
2566 goto failed_hw;
2567 }
2568
2569 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2570
2571 if (param->reg_alpha2) {
2572 data->alpha2[0] = param->reg_alpha2[0];
2573 data->alpha2[1] = param->reg_alpha2[1];
2574 regulatory_hint(hw->wiphy, param->reg_alpha2);
2575 }
2576
2577 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2578 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2579 debugfs_create_file("group", 0666, data->debugfs, data,
2580 &hwsim_fops_group);
2581 if (!data->use_chanctx)
2582 debugfs_create_file("dfs_simulate_radar", 0222,
2583 data->debugfs,
2584 data, &hwsim_simulate_radar);
2585
2586 tasklet_hrtimer_init(&data->beacon_timer,
2587 mac80211_hwsim_beacon,
2588 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2589
2590 spin_lock_bh(&hwsim_radio_lock);
2591 list_add_tail(&data->list, &hwsim_radios);
2592 spin_unlock_bh(&hwsim_radio_lock);
2593
2594 if (idx > 0)
2595 hwsim_mcast_new_radio(idx, info, param);
2596
2597 return idx;
2598
2599failed_hw:
2600 device_release_driver(data->dev);
2601failed_bind:
2602 device_unregister(data->dev);
2603failed_drvdata:
2604 ieee80211_free_hw(hw);
2605failed:
2606 return err;
2607}
2608
2609static void hwsim_mcast_del_radio(int id, const char *hwname,
2610 struct genl_info *info)
2611{
2612 struct sk_buff *skb;
2613 void *data;
2614 int ret;
2615
2616 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2617 if (!skb)
2618 return;
2619
2620 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2621 HWSIM_CMD_DEL_RADIO);
2622 if (!data)
2623 goto error;
2624
2625 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2626 if (ret < 0)
2627 goto error;
2628
2629 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2630 hwname);
2631 if (ret < 0)
2632 goto error;
2633
2634 genlmsg_end(skb, data);
2635
2636 hwsim_mcast_config_msg(skb, info);
2637
2638 return;
2639
2640error:
2641 nlmsg_free(skb);
2642}
2643
2644static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2645 const char *hwname,
2646 struct genl_info *info)
2647{
2648 hwsim_mcast_del_radio(data->idx, hwname, info);
2649 debugfs_remove_recursive(data->debugfs);
2650 ieee80211_unregister_hw(data->hw);
2651 device_release_driver(data->dev);
2652 device_unregister(data->dev);
2653 ieee80211_free_hw(data->hw);
2654}
2655
2656static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2657 struct mac80211_hwsim_data *data,
2658 u32 portid, u32 seq,
2659 struct netlink_callback *cb, int flags)
2660{
2661 void *hdr;
2662 struct hwsim_new_radio_params param = { };
2663 int res = -EMSGSIZE;
2664
2665 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2666 HWSIM_CMD_GET_RADIO);
2667 if (!hdr)
2668 return -EMSGSIZE;
2669
2670 if (cb)
2671 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2672
2673 if (data->alpha2[0] && data->alpha2[1])
2674 param.reg_alpha2 = data->alpha2;
2675
2676 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2677 REGULATORY_STRICT_REG);
2678 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2679 BIT(NL80211_IFTYPE_P2P_DEVICE));
2680 param.use_chanctx = data->use_chanctx;
2681 param.regd = data->regd;
2682 param.channels = data->channels;
2683 param.hwname = wiphy_name(data->hw->wiphy);
2684
2685 res = append_radio_msg(skb, data->idx, ¶m);
2686 if (res < 0)
2687 goto out_err;
2688
2689 genlmsg_end(skb, hdr);
2690 return 0;
2691
2692out_err:
2693 genlmsg_cancel(skb, hdr);
2694 return res;
2695}
2696
2697static void mac80211_hwsim_free(void)
2698{
2699 struct mac80211_hwsim_data *data;
2700
2701 spin_lock_bh(&hwsim_radio_lock);
2702 while ((data = list_first_entry_or_null(&hwsim_radios,
2703 struct mac80211_hwsim_data,
2704 list))) {
2705 list_del(&data->list);
2706 spin_unlock_bh(&hwsim_radio_lock);
2707 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2708 NULL);
2709 spin_lock_bh(&hwsim_radio_lock);
2710 }
2711 spin_unlock_bh(&hwsim_radio_lock);
2712 class_destroy(hwsim_class);
2713}
2714
2715static const struct net_device_ops hwsim_netdev_ops = {
2716 .ndo_start_xmit = hwsim_mon_xmit,
2717 .ndo_change_mtu = eth_change_mtu,
2718 .ndo_set_mac_address = eth_mac_addr,
2719 .ndo_validate_addr = eth_validate_addr,
2720};
2721
2722static void hwsim_mon_setup(struct net_device *dev)
2723{
2724 dev->netdev_ops = &hwsim_netdev_ops;
2725 dev->destructor = free_netdev;
2726 ether_setup(dev);
2727 dev->priv_flags |= IFF_NO_QUEUE;
2728 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2729 eth_zero_addr(dev->dev_addr);
2730 dev->dev_addr[0] = 0x12;
2731}
2732
2733static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2734{
2735 struct mac80211_hwsim_data *data;
2736 bool _found = false;
2737
2738 spin_lock_bh(&hwsim_radio_lock);
2739 list_for_each_entry(data, &hwsim_radios, list) {
2740 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2741 _found = true;
2742 break;
2743 }
2744 }
2745 spin_unlock_bh(&hwsim_radio_lock);
2746
2747 if (!_found)
2748 return NULL;
2749
2750 return data;
2751}
2752
2753static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2754 struct genl_info *info)
2755{
2756
2757 struct ieee80211_hdr *hdr;
2758 struct mac80211_hwsim_data *data2;
2759 struct ieee80211_tx_info *txi;
2760 struct hwsim_tx_rate *tx_attempts;
2761 u64 ret_skb_cookie;
2762 struct sk_buff *skb, *tmp;
2763 const u8 *src;
2764 unsigned int hwsim_flags;
2765 int i;
2766 bool found = false;
2767
2768 if (info->snd_portid != wmediumd_portid)
2769 return -EINVAL;
2770
2771 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2772 !info->attrs[HWSIM_ATTR_FLAGS] ||
2773 !info->attrs[HWSIM_ATTR_COOKIE] ||
2774 !info->attrs[HWSIM_ATTR_TX_INFO])
2775 goto out;
2776
2777 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2778 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2779 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2780
2781 data2 = get_hwsim_data_ref_from_addr(src);
2782 if (!data2)
2783 goto out;
2784
2785 /* look for the skb matching the cookie passed back from user */
2786 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2787 u64 skb_cookie;
2788
2789 txi = IEEE80211_SKB_CB(skb);
2790 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2791
2792 if (skb_cookie == ret_skb_cookie) {
2793 skb_unlink(skb, &data2->pending);
2794 found = true;
2795 break;
2796 }
2797 }
2798
2799 /* not found */
2800 if (!found)
2801 goto out;
2802
2803 /* Tx info received because the frame was broadcasted on user space,
2804 so we get all the necessary info: tx attempts and skb control buff */
2805
2806 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2807 info->attrs[HWSIM_ATTR_TX_INFO]);
2808
2809 /* now send back TX status */
2810 txi = IEEE80211_SKB_CB(skb);
2811
2812 ieee80211_tx_info_clear_status(txi);
2813
2814 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2815 txi->status.rates[i].idx = tx_attempts[i].idx;
2816 txi->status.rates[i].count = tx_attempts[i].count;
2817 /*txi->status.rates[i].flags = 0;*/
2818 }
2819
2820 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2821
2822 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2823 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2824 if (skb->len >= 16) {
2825 hdr = (struct ieee80211_hdr *) skb->data;
2826 mac80211_hwsim_monitor_ack(data2->channel,
2827 hdr->addr2);
2828 }
2829 txi->flags |= IEEE80211_TX_STAT_ACK;
2830 }
2831 ieee80211_tx_status_irqsafe(data2->hw, skb);
2832 return 0;
2833out:
2834 return -EINVAL;
2835
2836}
2837
2838static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2839 struct genl_info *info)
2840{
2841 struct mac80211_hwsim_data *data2;
2842 struct ieee80211_rx_status rx_status;
2843 const u8 *dst;
2844 int frame_data_len;
2845 void *frame_data;
2846 struct sk_buff *skb = NULL;
2847
2848 if (info->snd_portid != wmediumd_portid)
2849 return -EINVAL;
2850
2851 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2852 !info->attrs[HWSIM_ATTR_FRAME] ||
2853 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2854 !info->attrs[HWSIM_ATTR_SIGNAL])
2855 goto out;
2856
2857 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2858 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2859 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2860
2861 /* Allocate new skb here */
2862 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2863 if (skb == NULL)
2864 goto err;
2865
2866 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2867 goto err;
2868
2869 /* Copy the data */
2870 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2871
2872 data2 = get_hwsim_data_ref_from_addr(dst);
2873 if (!data2)
2874 goto out;
2875
2876 /* check if radio is configured properly */
2877
2878 if (data2->idle || !data2->started)
2879 goto out;
2880
2881 /* A frame is received from user space */
2882 memset(&rx_status, 0, sizeof(rx_status));
2883 if (info->attrs[HWSIM_ATTR_FREQ]) {
2884 /* throw away off-channel packets, but allow both the temporary
2885 * ("hw" scan/remain-on-channel) and regular channel, since the
2886 * internal datapath also allows this
2887 */
2888 mutex_lock(&data2->mutex);
2889 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2890
2891 if (rx_status.freq != data2->channel->center_freq &&
2892 (!data2->tmp_chan ||
2893 rx_status.freq != data2->tmp_chan->center_freq)) {
2894 mutex_unlock(&data2->mutex);
2895 goto out;
2896 }
2897 mutex_unlock(&data2->mutex);
2898 } else {
2899 rx_status.freq = data2->channel->center_freq;
2900 }
2901
2902 rx_status.band = data2->channel->band;
2903 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2904 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2905
2906 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2907 data2->rx_pkts++;
2908 data2->rx_bytes += skb->len;
2909 ieee80211_rx_irqsafe(data2->hw, skb);
2910
2911 return 0;
2912err:
2913 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2914out:
2915 dev_kfree_skb(skb);
2916 return -EINVAL;
2917}
2918
2919static int hwsim_register_received_nl(struct sk_buff *skb_2,
2920 struct genl_info *info)
2921{
2922 struct mac80211_hwsim_data *data;
2923 int chans = 1;
2924
2925 spin_lock_bh(&hwsim_radio_lock);
2926 list_for_each_entry(data, &hwsim_radios, list)
2927 chans = max(chans, data->channels);
2928 spin_unlock_bh(&hwsim_radio_lock);
2929
2930 /* In the future we should revise the userspace API and allow it
2931 * to set a flag that it does support multi-channel, then we can
2932 * let this pass conditionally on the flag.
2933 * For current userspace, prohibit it since it won't work right.
2934 */
2935 if (chans > 1)
2936 return -EOPNOTSUPP;
2937
2938 if (wmediumd_portid)
2939 return -EBUSY;
2940
2941 wmediumd_portid = info->snd_portid;
2942
2943 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2944 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2945
2946 return 0;
2947}
2948
2949static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2950{
2951 struct hwsim_new_radio_params param = { 0 };
2952
2953 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2954 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2955 param.channels = channels;
2956 param.destroy_on_close =
2957 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2958
2959 if (info->attrs[HWSIM_ATTR_CHANNELS])
2960 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2961
2962 if (info->attrs[HWSIM_ATTR_NO_VIF])
2963 param.no_vif = true;
2964
2965 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2966 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2967
2968 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2969 param.use_chanctx = true;
2970 else
2971 param.use_chanctx = (param.channels > 1);
2972
2973 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2974 param.reg_alpha2 =
2975 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2976
2977 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2978 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2979
2980 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2981 return -EINVAL;
2982 param.regd = hwsim_world_regdom_custom[idx];
2983 }
2984
2985 return mac80211_hwsim_new_radio(info, ¶m);
2986}
2987
2988static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2989{
2990 struct mac80211_hwsim_data *data;
2991 s64 idx = -1;
2992 const char *hwname = NULL;
2993
2994 if (info->attrs[HWSIM_ATTR_RADIO_ID])
2995 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2996 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2997 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2998 else
2999 return -EINVAL;
3000
3001 spin_lock_bh(&hwsim_radio_lock);
3002 list_for_each_entry(data, &hwsim_radios, list) {
3003 if (idx >= 0) {
3004 if (data->idx != idx)
3005 continue;
3006 } else {
3007 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3008 continue;
3009 }
3010
3011 list_del(&data->list);
3012 spin_unlock_bh(&hwsim_radio_lock);
3013 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3014 info);
3015 return 0;
3016 }
3017 spin_unlock_bh(&hwsim_radio_lock);
3018
3019 return -ENODEV;
3020}
3021
3022static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3023{
3024 struct mac80211_hwsim_data *data;
3025 struct sk_buff *skb;
3026 int idx, res = -ENODEV;
3027
3028 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3029 return -EINVAL;
3030 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3031
3032 spin_lock_bh(&hwsim_radio_lock);
3033 list_for_each_entry(data, &hwsim_radios, list) {
3034 if (data->idx != idx)
3035 continue;
3036
3037 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3038 if (!skb) {
3039 res = -ENOMEM;
3040 goto out_err;
3041 }
3042
3043 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3044 info->snd_seq, NULL, 0);
3045 if (res < 0) {
3046 nlmsg_free(skb);
3047 goto out_err;
3048 }
3049
3050 genlmsg_reply(skb, info);
3051 break;
3052 }
3053
3054out_err:
3055 spin_unlock_bh(&hwsim_radio_lock);
3056
3057 return res;
3058}
3059
3060static int hwsim_dump_radio_nl(struct sk_buff *skb,
3061 struct netlink_callback *cb)
3062{
3063 int idx = cb->args[0];
3064 struct mac80211_hwsim_data *data = NULL;
3065 int res;
3066
3067 spin_lock_bh(&hwsim_radio_lock);
3068
3069 if (idx == hwsim_radio_idx)
3070 goto done;
3071
3072 list_for_each_entry(data, &hwsim_radios, list) {
3073 if (data->idx < idx)
3074 continue;
3075
3076 res = mac80211_hwsim_get_radio(skb, data,
3077 NETLINK_CB(cb->skb).portid,
3078 cb->nlh->nlmsg_seq, cb,
3079 NLM_F_MULTI);
3080 if (res < 0)
3081 break;
3082
3083 idx = data->idx + 1;
3084 }
3085
3086 cb->args[0] = idx;
3087
3088done:
3089 spin_unlock_bh(&hwsim_radio_lock);
3090 return skb->len;
3091}
3092
3093/* Generic Netlink operations array */
3094static const struct genl_ops hwsim_ops[] = {
3095 {
3096 .cmd = HWSIM_CMD_REGISTER,
3097 .policy = hwsim_genl_policy,
3098 .doit = hwsim_register_received_nl,
3099 .flags = GENL_ADMIN_PERM,
3100 },
3101 {
3102 .cmd = HWSIM_CMD_FRAME,
3103 .policy = hwsim_genl_policy,
3104 .doit = hwsim_cloned_frame_received_nl,
3105 },
3106 {
3107 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3108 .policy = hwsim_genl_policy,
3109 .doit = hwsim_tx_info_frame_received_nl,
3110 },
3111 {
3112 .cmd = HWSIM_CMD_NEW_RADIO,
3113 .policy = hwsim_genl_policy,
3114 .doit = hwsim_new_radio_nl,
3115 .flags = GENL_ADMIN_PERM,
3116 },
3117 {
3118 .cmd = HWSIM_CMD_DEL_RADIO,
3119 .policy = hwsim_genl_policy,
3120 .doit = hwsim_del_radio_nl,
3121 .flags = GENL_ADMIN_PERM,
3122 },
3123 {
3124 .cmd = HWSIM_CMD_GET_RADIO,
3125 .policy = hwsim_genl_policy,
3126 .doit = hwsim_get_radio_nl,
3127 .dumpit = hwsim_dump_radio_nl,
3128 },
3129};
3130
3131static void destroy_radio(struct work_struct *work)
3132{
3133 struct mac80211_hwsim_data *data =
3134 container_of(work, struct mac80211_hwsim_data, destroy_work);
3135
3136 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3137}
3138
3139static void remove_user_radios(u32 portid)
3140{
3141 struct mac80211_hwsim_data *entry, *tmp;
3142
3143 spin_lock_bh(&hwsim_radio_lock);
3144 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3145 if (entry->destroy_on_close && entry->portid == portid) {
3146 list_del(&entry->list);
3147 INIT_WORK(&entry->destroy_work, destroy_radio);
3148 schedule_work(&entry->destroy_work);
3149 }
3150 }
3151 spin_unlock_bh(&hwsim_radio_lock);
3152}
3153
3154static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3155 unsigned long state,
3156 void *_notify)
3157{
3158 struct netlink_notify *notify = _notify;
3159
3160 if (state != NETLINK_URELEASE)
3161 return NOTIFY_DONE;
3162
3163 remove_user_radios(notify->portid);
3164
3165 if (notify->portid == wmediumd_portid) {
3166 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3167 " socket, switching to perfect channel medium\n");
3168 wmediumd_portid = 0;
3169 }
3170 return NOTIFY_DONE;
3171
3172}
3173
3174static struct notifier_block hwsim_netlink_notifier = {
3175 .notifier_call = mac80211_hwsim_netlink_notify,
3176};
3177
3178static int hwsim_init_netlink(void)
3179{
3180 int rc;
3181
3182 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3183
3184 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3185 hwsim_ops,
3186 hwsim_mcgrps);
3187 if (rc)
3188 goto failure;
3189
3190 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3191 if (rc) {
3192 genl_unregister_family(&hwsim_genl_family);
3193 goto failure;
3194 }
3195
3196 return 0;
3197
3198failure:
3199 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3200 return -EINVAL;
3201}
3202
3203static void hwsim_exit_netlink(void)
3204{
3205 /* unregister the notifier */
3206 netlink_unregister_notifier(&hwsim_netlink_notifier);
3207 /* unregister the family */
3208 genl_unregister_family(&hwsim_genl_family);
3209}
3210
3211static int __init init_mac80211_hwsim(void)
3212{
3213 int i, err;
3214
3215 if (radios < 0 || radios > 100)
3216 return -EINVAL;
3217
3218 if (channels < 1)
3219 return -EINVAL;
3220
3221 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3222 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3223 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3224 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3225 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3226 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3227 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3228 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3229 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3230 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3231 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3232 mac80211_hwsim_assign_vif_chanctx;
3233 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3234 mac80211_hwsim_unassign_vif_chanctx;
3235
3236 spin_lock_init(&hwsim_radio_lock);
3237 INIT_LIST_HEAD(&hwsim_radios);
3238
3239 err = platform_driver_register(&mac80211_hwsim_driver);
3240 if (err)
3241 return err;
3242
3243 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3244 if (IS_ERR(hwsim_class)) {
3245 err = PTR_ERR(hwsim_class);
3246 goto out_unregister_driver;
3247 }
3248
3249 err = hwsim_init_netlink();
3250 if (err < 0)
3251 goto out_unregister_driver;
3252
3253 for (i = 0; i < radios; i++) {
3254 struct hwsim_new_radio_params param = { 0 };
3255
3256 param.channels = channels;
3257
3258 switch (regtest) {
3259 case HWSIM_REGTEST_DIFF_COUNTRY:
3260 if (i < ARRAY_SIZE(hwsim_alpha2s))
3261 param.reg_alpha2 = hwsim_alpha2s[i];
3262 break;
3263 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3264 if (!i)
3265 param.reg_alpha2 = hwsim_alpha2s[0];
3266 break;
3267 case HWSIM_REGTEST_STRICT_ALL:
3268 param.reg_strict = true;
3269 case HWSIM_REGTEST_DRIVER_REG_ALL:
3270 param.reg_alpha2 = hwsim_alpha2s[0];
3271 break;
3272 case HWSIM_REGTEST_WORLD_ROAM:
3273 if (i == 0)
3274 param.regd = &hwsim_world_regdom_custom_01;
3275 break;
3276 case HWSIM_REGTEST_CUSTOM_WORLD:
3277 param.regd = &hwsim_world_regdom_custom_01;
3278 break;
3279 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3280 if (i == 0)
3281 param.regd = &hwsim_world_regdom_custom_01;
3282 else if (i == 1)
3283 param.regd = &hwsim_world_regdom_custom_02;
3284 break;
3285 case HWSIM_REGTEST_STRICT_FOLLOW:
3286 if (i == 0) {
3287 param.reg_strict = true;
3288 param.reg_alpha2 = hwsim_alpha2s[0];
3289 }
3290 break;
3291 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3292 if (i == 0) {
3293 param.reg_strict = true;
3294 param.reg_alpha2 = hwsim_alpha2s[0];
3295 } else if (i == 1) {
3296 param.reg_alpha2 = hwsim_alpha2s[1];
3297 }
3298 break;
3299 case HWSIM_REGTEST_ALL:
3300 switch (i) {
3301 case 0:
3302 param.regd = &hwsim_world_regdom_custom_01;
3303 break;
3304 case 1:
3305 param.regd = &hwsim_world_regdom_custom_02;
3306 break;
3307 case 2:
3308 param.reg_alpha2 = hwsim_alpha2s[0];
3309 break;
3310 case 3:
3311 param.reg_alpha2 = hwsim_alpha2s[1];
3312 break;
3313 case 4:
3314 param.reg_strict = true;
3315 param.reg_alpha2 = hwsim_alpha2s[2];
3316 break;
3317 }
3318 break;
3319 default:
3320 break;
3321 }
3322
3323 param.p2p_device = support_p2p_device;
3324 param.use_chanctx = channels > 1;
3325
3326 err = mac80211_hwsim_new_radio(NULL, ¶m);
3327 if (err < 0)
3328 goto out_free_radios;
3329 }
3330
3331 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3332 hwsim_mon_setup);
3333 if (hwsim_mon == NULL) {
3334 err = -ENOMEM;
3335 goto out_free_radios;
3336 }
3337
3338 rtnl_lock();
3339 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3340 if (err < 0) {
3341 rtnl_unlock();
3342 goto out_free_radios;
3343 }
3344
3345 err = register_netdevice(hwsim_mon);
3346 if (err < 0) {
3347 rtnl_unlock();
3348 goto out_free_mon;
3349 }
3350 rtnl_unlock();
3351
3352 return 0;
3353
3354out_free_mon:
3355 free_netdev(hwsim_mon);
3356out_free_radios:
3357 mac80211_hwsim_free();
3358out_unregister_driver:
3359 platform_driver_unregister(&mac80211_hwsim_driver);
3360 return err;
3361}
3362module_init(init_mac80211_hwsim);
3363
3364static void __exit exit_mac80211_hwsim(void)
3365{
3366 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3367
3368 hwsim_exit_netlink();
3369
3370 mac80211_hwsim_free();
3371 unregister_netdev(hwsim_mon);
3372 platform_driver_unregister(&mac80211_hwsim_driver);
3373}
3374module_exit(exit_mac80211_hwsim);
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
4 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
5 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
6 * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
7 * Copyright (C) 2018 Intel Corporation
8 */
9
10/*
11 * TODO:
12 * - Add TSF sync and fix IBSS beacon transmission by adding
13 * competition for "air time" at TBTT
14 * - RX filtering based on filter configuration (data->rx_filter)
15 */
16
17#include <linux/list.h>
18#include <linux/slab.h>
19#include <linux/spinlock.h>
20#include <net/dst.h>
21#include <net/xfrm.h>
22#include <net/mac80211.h>
23#include <net/ieee80211_radiotap.h>
24#include <linux/if_arp.h>
25#include <linux/rtnetlink.h>
26#include <linux/etherdevice.h>
27#include <linux/platform_device.h>
28#include <linux/debugfs.h>
29#include <linux/module.h>
30#include <linux/ktime.h>
31#include <net/genetlink.h>
32#include <net/net_namespace.h>
33#include <net/netns/generic.h>
34#include <linux/rhashtable.h>
35#include <linux/nospec.h>
36#include "mac80211_hwsim.h"
37
38#define WARN_QUEUE 100
39#define MAX_QUEUE 200
40
41MODULE_AUTHOR("Jouni Malinen");
42MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
43MODULE_LICENSE("GPL");
44
45static int radios = 2;
46module_param(radios, int, 0444);
47MODULE_PARM_DESC(radios, "Number of simulated radios");
48
49static int channels = 1;
50module_param(channels, int, 0444);
51MODULE_PARM_DESC(channels, "Number of concurrent channels");
52
53static bool paged_rx = false;
54module_param(paged_rx, bool, 0644);
55MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
56
57static bool rctbl = false;
58module_param(rctbl, bool, 0444);
59MODULE_PARM_DESC(rctbl, "Handle rate control table");
60
61static bool support_p2p_device = true;
62module_param(support_p2p_device, bool, 0444);
63MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
64
65/**
66 * enum hwsim_regtest - the type of regulatory tests we offer
67 *
68 * These are the different values you can use for the regtest
69 * module parameter. This is useful to help test world roaming
70 * and the driver regulatory_hint() call and combinations of these.
71 * If you want to do specific alpha2 regulatory domain tests simply
72 * use the userspace regulatory request as that will be respected as
73 * well without the need of this module parameter. This is designed
74 * only for testing the driver regulatory request, world roaming
75 * and all possible combinations.
76 *
77 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
78 * this is the default value.
79 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
80 * hint, only one driver regulatory hint will be sent as such the
81 * secondary radios are expected to follow.
82 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
83 * request with all radios reporting the same regulatory domain.
84 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
85 * different regulatory domains requests. Expected behaviour is for
86 * an intersection to occur but each device will still use their
87 * respective regulatory requested domains. Subsequent radios will
88 * use the resulting intersection.
89 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
90 * this by using a custom beacon-capable regulatory domain for the first
91 * radio. All other device world roam.
92 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
93 * domain requests. All radios will adhere to this custom world regulatory
94 * domain.
95 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
96 * domain requests. The first radio will adhere to the first custom world
97 * regulatory domain, the second one to the second custom world regulatory
98 * domain. All other devices will world roam.
99 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
100 * settings, only the first radio will send a regulatory domain request
101 * and use strict settings. The rest of the radios are expected to follow.
102 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
103 * settings. All radios will adhere to this.
104 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
105 * domain settings, combined with secondary driver regulatory domain
106 * settings. The first radio will get a strict regulatory domain setting
107 * using the first driver regulatory request and the second radio will use
108 * non-strict settings using the second driver regulatory request. All
109 * other devices should follow the intersection created between the
110 * first two.
111 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
112 * at least 6 radios for a complete test. We will test in this order:
113 * 1 - driver custom world regulatory domain
114 * 2 - second custom world regulatory domain
115 * 3 - first driver regulatory domain request
116 * 4 - second driver regulatory domain request
117 * 5 - strict regulatory domain settings using the third driver regulatory
118 * domain request
119 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
120 * regulatory requests.
121 */
122enum hwsim_regtest {
123 HWSIM_REGTEST_DISABLED = 0,
124 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
125 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
126 HWSIM_REGTEST_DIFF_COUNTRY = 3,
127 HWSIM_REGTEST_WORLD_ROAM = 4,
128 HWSIM_REGTEST_CUSTOM_WORLD = 5,
129 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
130 HWSIM_REGTEST_STRICT_FOLLOW = 7,
131 HWSIM_REGTEST_STRICT_ALL = 8,
132 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
133 HWSIM_REGTEST_ALL = 10,
134};
135
136/* Set to one of the HWSIM_REGTEST_* values above */
137static int regtest = HWSIM_REGTEST_DISABLED;
138module_param(regtest, int, 0444);
139MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
140
141static const char *hwsim_alpha2s[] = {
142 "FI",
143 "AL",
144 "US",
145 "DE",
146 "JP",
147 "AL",
148};
149
150static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
151 .n_reg_rules = 4,
152 .alpha2 = "99",
153 .reg_rules = {
154 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
155 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
156 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
157 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
158 }
159};
160
161static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
162 .n_reg_rules = 2,
163 .alpha2 = "99",
164 .reg_rules = {
165 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
166 REG_RULE(5725-10, 5850+10, 40, 0, 30,
167 NL80211_RRF_NO_IR),
168 }
169};
170
171static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
172 &hwsim_world_regdom_custom_01,
173 &hwsim_world_regdom_custom_02,
174};
175
176struct hwsim_vif_priv {
177 u32 magic;
178 u8 bssid[ETH_ALEN];
179 bool assoc;
180 bool bcn_en;
181 u16 aid;
182};
183
184#define HWSIM_VIF_MAGIC 0x69537748
185
186static inline void hwsim_check_magic(struct ieee80211_vif *vif)
187{
188 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
189 WARN(vp->magic != HWSIM_VIF_MAGIC,
190 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
191 vif, vp->magic, vif->addr, vif->type, vif->p2p);
192}
193
194static inline void hwsim_set_magic(struct ieee80211_vif *vif)
195{
196 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
197 vp->magic = HWSIM_VIF_MAGIC;
198}
199
200static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
201{
202 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
203 vp->magic = 0;
204}
205
206struct hwsim_sta_priv {
207 u32 magic;
208};
209
210#define HWSIM_STA_MAGIC 0x6d537749
211
212static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
213{
214 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
215 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
216}
217
218static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
219{
220 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
221 sp->magic = HWSIM_STA_MAGIC;
222}
223
224static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
225{
226 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
227 sp->magic = 0;
228}
229
230struct hwsim_chanctx_priv {
231 u32 magic;
232};
233
234#define HWSIM_CHANCTX_MAGIC 0x6d53774a
235
236static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
237{
238 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
239 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
240}
241
242static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
243{
244 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
245 cp->magic = HWSIM_CHANCTX_MAGIC;
246}
247
248static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
249{
250 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
251 cp->magic = 0;
252}
253
254static unsigned int hwsim_net_id;
255
256static DEFINE_IDA(hwsim_netgroup_ida);
257
258struct hwsim_net {
259 int netgroup;
260 u32 wmediumd;
261};
262
263static inline int hwsim_net_get_netgroup(struct net *net)
264{
265 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
266
267 return hwsim_net->netgroup;
268}
269
270static inline int hwsim_net_set_netgroup(struct net *net)
271{
272 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
273
274 hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
275 0, 0, GFP_KERNEL);
276 return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
277}
278
279static inline u32 hwsim_net_get_wmediumd(struct net *net)
280{
281 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
282
283 return hwsim_net->wmediumd;
284}
285
286static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
287{
288 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
289
290 hwsim_net->wmediumd = portid;
291}
292
293static struct class *hwsim_class;
294
295static struct net_device *hwsim_mon; /* global monitor netdev */
296
297#define CHAN2G(_freq) { \
298 .band = NL80211_BAND_2GHZ, \
299 .center_freq = (_freq), \
300 .hw_value = (_freq), \
301 .max_power = 20, \
302}
303
304#define CHAN5G(_freq) { \
305 .band = NL80211_BAND_5GHZ, \
306 .center_freq = (_freq), \
307 .hw_value = (_freq), \
308 .max_power = 20, \
309}
310
311static const struct ieee80211_channel hwsim_channels_2ghz[] = {
312 CHAN2G(2412), /* Channel 1 */
313 CHAN2G(2417), /* Channel 2 */
314 CHAN2G(2422), /* Channel 3 */
315 CHAN2G(2427), /* Channel 4 */
316 CHAN2G(2432), /* Channel 5 */
317 CHAN2G(2437), /* Channel 6 */
318 CHAN2G(2442), /* Channel 7 */
319 CHAN2G(2447), /* Channel 8 */
320 CHAN2G(2452), /* Channel 9 */
321 CHAN2G(2457), /* Channel 10 */
322 CHAN2G(2462), /* Channel 11 */
323 CHAN2G(2467), /* Channel 12 */
324 CHAN2G(2472), /* Channel 13 */
325 CHAN2G(2484), /* Channel 14 */
326};
327
328static const struct ieee80211_channel hwsim_channels_5ghz[] = {
329 CHAN5G(5180), /* Channel 36 */
330 CHAN5G(5200), /* Channel 40 */
331 CHAN5G(5220), /* Channel 44 */
332 CHAN5G(5240), /* Channel 48 */
333
334 CHAN5G(5260), /* Channel 52 */
335 CHAN5G(5280), /* Channel 56 */
336 CHAN5G(5300), /* Channel 60 */
337 CHAN5G(5320), /* Channel 64 */
338
339 CHAN5G(5500), /* Channel 100 */
340 CHAN5G(5520), /* Channel 104 */
341 CHAN5G(5540), /* Channel 108 */
342 CHAN5G(5560), /* Channel 112 */
343 CHAN5G(5580), /* Channel 116 */
344 CHAN5G(5600), /* Channel 120 */
345 CHAN5G(5620), /* Channel 124 */
346 CHAN5G(5640), /* Channel 128 */
347 CHAN5G(5660), /* Channel 132 */
348 CHAN5G(5680), /* Channel 136 */
349 CHAN5G(5700), /* Channel 140 */
350
351 CHAN5G(5745), /* Channel 149 */
352 CHAN5G(5765), /* Channel 153 */
353 CHAN5G(5785), /* Channel 157 */
354 CHAN5G(5805), /* Channel 161 */
355 CHAN5G(5825), /* Channel 165 */
356 CHAN5G(5845), /* Channel 169 */
357};
358
359static const struct ieee80211_rate hwsim_rates[] = {
360 { .bitrate = 10 },
361 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
362 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
363 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
364 { .bitrate = 60 },
365 { .bitrate = 90 },
366 { .bitrate = 120 },
367 { .bitrate = 180 },
368 { .bitrate = 240 },
369 { .bitrate = 360 },
370 { .bitrate = 480 },
371 { .bitrate = 540 }
372};
373
374static const u32 hwsim_ciphers[] = {
375 WLAN_CIPHER_SUITE_WEP40,
376 WLAN_CIPHER_SUITE_WEP104,
377 WLAN_CIPHER_SUITE_TKIP,
378 WLAN_CIPHER_SUITE_CCMP,
379 WLAN_CIPHER_SUITE_CCMP_256,
380 WLAN_CIPHER_SUITE_GCMP,
381 WLAN_CIPHER_SUITE_GCMP_256,
382 WLAN_CIPHER_SUITE_AES_CMAC,
383 WLAN_CIPHER_SUITE_BIP_CMAC_256,
384 WLAN_CIPHER_SUITE_BIP_GMAC_128,
385 WLAN_CIPHER_SUITE_BIP_GMAC_256,
386};
387
388#define OUI_QCA 0x001374
389#define QCA_NL80211_SUBCMD_TEST 1
390enum qca_nl80211_vendor_subcmds {
391 QCA_WLAN_VENDOR_ATTR_TEST = 8,
392 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
393};
394
395static const struct nla_policy
396hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
397 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
398};
399
400static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
401 struct wireless_dev *wdev,
402 const void *data, int data_len)
403{
404 struct sk_buff *skb;
405 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
406 int err;
407 u32 val;
408
409 err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
410 data_len, hwsim_vendor_test_policy, NULL);
411 if (err)
412 return err;
413 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
414 return -EINVAL;
415 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
416 wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
417
418 /* Send a vendor event as a test. Note that this would not normally be
419 * done within a command handler, but rather, based on some other
420 * trigger. For simplicity, this command is used to trigger the event
421 * here.
422 *
423 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
424 */
425 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
426 if (skb) {
427 /* skb_put() or nla_put() will fill up data within
428 * NL80211_ATTR_VENDOR_DATA.
429 */
430
431 /* Add vendor data */
432 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
433
434 /* Send the event - this will call nla_nest_end() */
435 cfg80211_vendor_event(skb, GFP_KERNEL);
436 }
437
438 /* Send a response to the command */
439 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
440 if (!skb)
441 return -ENOMEM;
442
443 /* skb_put() or nla_put() will fill up data within
444 * NL80211_ATTR_VENDOR_DATA
445 */
446 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
447
448 return cfg80211_vendor_cmd_reply(skb);
449}
450
451static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
452 {
453 .info = { .vendor_id = OUI_QCA,
454 .subcmd = QCA_NL80211_SUBCMD_TEST },
455 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
456 .doit = mac80211_hwsim_vendor_cmd_test,
457 .policy = hwsim_vendor_test_policy,
458 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
459 }
460};
461
462/* Advertise support vendor specific events */
463static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
464 { .vendor_id = OUI_QCA, .subcmd = 1 },
465};
466
467static spinlock_t hwsim_radio_lock;
468static LIST_HEAD(hwsim_radios);
469static struct rhashtable hwsim_radios_rht;
470static int hwsim_radio_idx;
471static int hwsim_radios_generation = 1;
472
473static struct platform_driver mac80211_hwsim_driver = {
474 .driver = {
475 .name = "mac80211_hwsim",
476 },
477};
478
479struct mac80211_hwsim_data {
480 struct list_head list;
481 struct rhash_head rht;
482 struct ieee80211_hw *hw;
483 struct device *dev;
484 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
485 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
486 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
487 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
488 struct ieee80211_iface_combination if_combination;
489 struct ieee80211_iface_limit if_limits[3];
490 int n_if_limits;
491
492 u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
493
494 struct mac_address addresses[2];
495 int channels, idx;
496 bool use_chanctx;
497 bool destroy_on_close;
498 u32 portid;
499 char alpha2[2];
500 const struct ieee80211_regdomain *regd;
501
502 struct ieee80211_channel *tmp_chan;
503 struct ieee80211_channel *roc_chan;
504 u32 roc_duration;
505 struct delayed_work roc_start;
506 struct delayed_work roc_done;
507 struct delayed_work hw_scan;
508 struct cfg80211_scan_request *hw_scan_request;
509 struct ieee80211_vif *hw_scan_vif;
510 int scan_chan_idx;
511 u8 scan_addr[ETH_ALEN];
512 struct {
513 struct ieee80211_channel *channel;
514 unsigned long next_start, start, end;
515 } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
516 ARRAY_SIZE(hwsim_channels_5ghz)];
517
518 struct ieee80211_channel *channel;
519 u64 beacon_int /* beacon interval in us */;
520 unsigned int rx_filter;
521 bool started, idle, scanning;
522 struct mutex mutex;
523 struct hrtimer beacon_timer;
524 enum ps_mode {
525 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
526 } ps;
527 bool ps_poll_pending;
528 struct dentry *debugfs;
529
530 uintptr_t pending_cookie;
531 struct sk_buff_head pending; /* packets pending */
532 /*
533 * Only radios in the same group can communicate together (the
534 * channel has to match too). Each bit represents a group. A
535 * radio can be in more than one group.
536 */
537 u64 group;
538
539 /* group shared by radios created in the same netns */
540 int netgroup;
541 /* wmediumd portid responsible for netgroup of this radio */
542 u32 wmediumd;
543
544 /* difference between this hw's clock and the real clock, in usecs */
545 s64 tsf_offset;
546 s64 bcn_delta;
547 /* absolute beacon transmission time. Used to cover up "tx" delay. */
548 u64 abs_bcn_ts;
549
550 /* Stats */
551 u64 tx_pkts;
552 u64 rx_pkts;
553 u64 tx_bytes;
554 u64 rx_bytes;
555 u64 tx_dropped;
556 u64 tx_failed;
557};
558
559static const struct rhashtable_params hwsim_rht_params = {
560 .nelem_hint = 2,
561 .automatic_shrinking = true,
562 .key_len = ETH_ALEN,
563 .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
564 .head_offset = offsetof(struct mac80211_hwsim_data, rht),
565};
566
567struct hwsim_radiotap_hdr {
568 struct ieee80211_radiotap_header hdr;
569 __le64 rt_tsft;
570 u8 rt_flags;
571 u8 rt_rate;
572 __le16 rt_channel;
573 __le16 rt_chbitmask;
574} __packed;
575
576struct hwsim_radiotap_ack_hdr {
577 struct ieee80211_radiotap_header hdr;
578 u8 rt_flags;
579 u8 pad;
580 __le16 rt_channel;
581 __le16 rt_chbitmask;
582} __packed;
583
584/* MAC80211_HWSIM netlink family */
585static struct genl_family hwsim_genl_family;
586
587enum hwsim_multicast_groups {
588 HWSIM_MCGRP_CONFIG,
589};
590
591static const struct genl_multicast_group hwsim_mcgrps[] = {
592 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
593};
594
595/* MAC80211_HWSIM netlink policy */
596
597static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
598 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
599 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
600 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
601 .len = IEEE80211_MAX_DATA_LEN },
602 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
603 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
604 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
605 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
606 .len = IEEE80211_TX_MAX_RATES *
607 sizeof(struct hwsim_tx_rate)},
608 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
609 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
610 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
611 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
612 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
613 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
614 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
615 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
616 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
617 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
618 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
619 [HWSIM_ATTR_PERM_ADDR] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
620 [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
621 [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
622};
623
624static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
625 struct sk_buff *skb,
626 struct ieee80211_channel *chan);
627
628/* sysfs attributes */
629static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
630{
631 struct mac80211_hwsim_data *data = dat;
632 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
633 struct sk_buff *skb;
634 struct ieee80211_pspoll *pspoll;
635
636 if (!vp->assoc)
637 return;
638
639 wiphy_dbg(data->hw->wiphy,
640 "%s: send PS-Poll to %pM for aid %d\n",
641 __func__, vp->bssid, vp->aid);
642
643 skb = dev_alloc_skb(sizeof(*pspoll));
644 if (!skb)
645 return;
646 pspoll = skb_put(skb, sizeof(*pspoll));
647 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
648 IEEE80211_STYPE_PSPOLL |
649 IEEE80211_FCTL_PM);
650 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
651 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
652 memcpy(pspoll->ta, mac, ETH_ALEN);
653
654 rcu_read_lock();
655 mac80211_hwsim_tx_frame(data->hw, skb,
656 rcu_dereference(vif->chanctx_conf)->def.chan);
657 rcu_read_unlock();
658}
659
660static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
661 struct ieee80211_vif *vif, int ps)
662{
663 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
664 struct sk_buff *skb;
665 struct ieee80211_hdr *hdr;
666
667 if (!vp->assoc)
668 return;
669
670 wiphy_dbg(data->hw->wiphy,
671 "%s: send data::nullfunc to %pM ps=%d\n",
672 __func__, vp->bssid, ps);
673
674 skb = dev_alloc_skb(sizeof(*hdr));
675 if (!skb)
676 return;
677 hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
678 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
679 IEEE80211_STYPE_NULLFUNC |
680 IEEE80211_FCTL_TODS |
681 (ps ? IEEE80211_FCTL_PM : 0));
682 hdr->duration_id = cpu_to_le16(0);
683 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
684 memcpy(hdr->addr2, mac, ETH_ALEN);
685 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
686
687 rcu_read_lock();
688 mac80211_hwsim_tx_frame(data->hw, skb,
689 rcu_dereference(vif->chanctx_conf)->def.chan);
690 rcu_read_unlock();
691}
692
693
694static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
695 struct ieee80211_vif *vif)
696{
697 struct mac80211_hwsim_data *data = dat;
698 hwsim_send_nullfunc(data, mac, vif, 1);
699}
700
701static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
702 struct ieee80211_vif *vif)
703{
704 struct mac80211_hwsim_data *data = dat;
705 hwsim_send_nullfunc(data, mac, vif, 0);
706}
707
708static int hwsim_fops_ps_read(void *dat, u64 *val)
709{
710 struct mac80211_hwsim_data *data = dat;
711 *val = data->ps;
712 return 0;
713}
714
715static int hwsim_fops_ps_write(void *dat, u64 val)
716{
717 struct mac80211_hwsim_data *data = dat;
718 enum ps_mode old_ps;
719
720 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
721 val != PS_MANUAL_POLL)
722 return -EINVAL;
723
724 if (val == PS_MANUAL_POLL) {
725 if (data->ps != PS_ENABLED)
726 return -EINVAL;
727 local_bh_disable();
728 ieee80211_iterate_active_interfaces_atomic(
729 data->hw, IEEE80211_IFACE_ITER_NORMAL,
730 hwsim_send_ps_poll, data);
731 local_bh_enable();
732 return 0;
733 }
734 old_ps = data->ps;
735 data->ps = val;
736
737 local_bh_disable();
738 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
739 ieee80211_iterate_active_interfaces_atomic(
740 data->hw, IEEE80211_IFACE_ITER_NORMAL,
741 hwsim_send_nullfunc_ps, data);
742 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
743 ieee80211_iterate_active_interfaces_atomic(
744 data->hw, IEEE80211_IFACE_ITER_NORMAL,
745 hwsim_send_nullfunc_no_ps, data);
746 }
747 local_bh_enable();
748
749 return 0;
750}
751
752DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
753 "%llu\n");
754
755static int hwsim_write_simulate_radar(void *dat, u64 val)
756{
757 struct mac80211_hwsim_data *data = dat;
758
759 ieee80211_radar_detected(data->hw);
760
761 return 0;
762}
763
764DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
765 hwsim_write_simulate_radar, "%llu\n");
766
767static int hwsim_fops_group_read(void *dat, u64 *val)
768{
769 struct mac80211_hwsim_data *data = dat;
770 *val = data->group;
771 return 0;
772}
773
774static int hwsim_fops_group_write(void *dat, u64 val)
775{
776 struct mac80211_hwsim_data *data = dat;
777 data->group = val;
778 return 0;
779}
780
781DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
782 hwsim_fops_group_read, hwsim_fops_group_write,
783 "%llx\n");
784
785static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
786 struct net_device *dev)
787{
788 /* TODO: allow packet injection */
789 dev_kfree_skb(skb);
790 return NETDEV_TX_OK;
791}
792
793static inline u64 mac80211_hwsim_get_tsf_raw(void)
794{
795 return ktime_to_us(ktime_get_real());
796}
797
798static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
799{
800 u64 now = mac80211_hwsim_get_tsf_raw();
801 return cpu_to_le64(now + data->tsf_offset);
802}
803
804static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
805 struct ieee80211_vif *vif)
806{
807 struct mac80211_hwsim_data *data = hw->priv;
808 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
809}
810
811static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
812 struct ieee80211_vif *vif, u64 tsf)
813{
814 struct mac80211_hwsim_data *data = hw->priv;
815 u64 now = mac80211_hwsim_get_tsf(hw, vif);
816 u32 bcn_int = data->beacon_int;
817 u64 delta = abs(tsf - now);
818
819 /* adjust after beaconing with new timestamp at old TBTT */
820 if (tsf > now) {
821 data->tsf_offset += delta;
822 data->bcn_delta = do_div(delta, bcn_int);
823 } else {
824 data->tsf_offset -= delta;
825 data->bcn_delta = -(s64)do_div(delta, bcn_int);
826 }
827}
828
829static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
830 struct sk_buff *tx_skb,
831 struct ieee80211_channel *chan)
832{
833 struct mac80211_hwsim_data *data = hw->priv;
834 struct sk_buff *skb;
835 struct hwsim_radiotap_hdr *hdr;
836 u16 flags;
837 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
838 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
839
840 if (WARN_ON(!txrate))
841 return;
842
843 if (!netif_running(hwsim_mon))
844 return;
845
846 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
847 if (skb == NULL)
848 return;
849
850 hdr = skb_push(skb, sizeof(*hdr));
851 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
852 hdr->hdr.it_pad = 0;
853 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
854 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
855 (1 << IEEE80211_RADIOTAP_RATE) |
856 (1 << IEEE80211_RADIOTAP_TSFT) |
857 (1 << IEEE80211_RADIOTAP_CHANNEL));
858 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
859 hdr->rt_flags = 0;
860 hdr->rt_rate = txrate->bitrate / 5;
861 hdr->rt_channel = cpu_to_le16(chan->center_freq);
862 flags = IEEE80211_CHAN_2GHZ;
863 if (txrate->flags & IEEE80211_RATE_ERP_G)
864 flags |= IEEE80211_CHAN_OFDM;
865 else
866 flags |= IEEE80211_CHAN_CCK;
867 hdr->rt_chbitmask = cpu_to_le16(flags);
868
869 skb->dev = hwsim_mon;
870 skb_reset_mac_header(skb);
871 skb->ip_summed = CHECKSUM_UNNECESSARY;
872 skb->pkt_type = PACKET_OTHERHOST;
873 skb->protocol = htons(ETH_P_802_2);
874 memset(skb->cb, 0, sizeof(skb->cb));
875 netif_rx(skb);
876}
877
878
879static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
880 const u8 *addr)
881{
882 struct sk_buff *skb;
883 struct hwsim_radiotap_ack_hdr *hdr;
884 u16 flags;
885 struct ieee80211_hdr *hdr11;
886
887 if (!netif_running(hwsim_mon))
888 return;
889
890 skb = dev_alloc_skb(100);
891 if (skb == NULL)
892 return;
893
894 hdr = skb_put(skb, sizeof(*hdr));
895 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
896 hdr->hdr.it_pad = 0;
897 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
898 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
899 (1 << IEEE80211_RADIOTAP_CHANNEL));
900 hdr->rt_flags = 0;
901 hdr->pad = 0;
902 hdr->rt_channel = cpu_to_le16(chan->center_freq);
903 flags = IEEE80211_CHAN_2GHZ;
904 hdr->rt_chbitmask = cpu_to_le16(flags);
905
906 hdr11 = skb_put(skb, 10);
907 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
908 IEEE80211_STYPE_ACK);
909 hdr11->duration_id = cpu_to_le16(0);
910 memcpy(hdr11->addr1, addr, ETH_ALEN);
911
912 skb->dev = hwsim_mon;
913 skb_reset_mac_header(skb);
914 skb->ip_summed = CHECKSUM_UNNECESSARY;
915 skb->pkt_type = PACKET_OTHERHOST;
916 skb->protocol = htons(ETH_P_802_2);
917 memset(skb->cb, 0, sizeof(skb->cb));
918 netif_rx(skb);
919}
920
921struct mac80211_hwsim_addr_match_data {
922 u8 addr[ETH_ALEN];
923 bool ret;
924};
925
926static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
927 struct ieee80211_vif *vif)
928{
929 struct mac80211_hwsim_addr_match_data *md = data;
930
931 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
932 md->ret = true;
933}
934
935static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
936 const u8 *addr)
937{
938 struct mac80211_hwsim_addr_match_data md = {
939 .ret = false,
940 };
941
942 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
943 return true;
944
945 memcpy(md.addr, addr, ETH_ALEN);
946
947 ieee80211_iterate_active_interfaces_atomic(data->hw,
948 IEEE80211_IFACE_ITER_NORMAL,
949 mac80211_hwsim_addr_iter,
950 &md);
951
952 return md.ret;
953}
954
955static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
956 struct sk_buff *skb)
957{
958 switch (data->ps) {
959 case PS_DISABLED:
960 return true;
961 case PS_ENABLED:
962 return false;
963 case PS_AUTO_POLL:
964 /* TODO: accept (some) Beacons by default and other frames only
965 * if pending PS-Poll has been sent */
966 return true;
967 case PS_MANUAL_POLL:
968 /* Allow unicast frames to own address if there is a pending
969 * PS-Poll */
970 if (data->ps_poll_pending &&
971 mac80211_hwsim_addr_match(data, skb->data + 4)) {
972 data->ps_poll_pending = false;
973 return true;
974 }
975 return false;
976 }
977
978 return true;
979}
980
981static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
982 struct sk_buff *skb, int portid)
983{
984 struct net *net;
985 bool found = false;
986 int res = -ENOENT;
987
988 rcu_read_lock();
989 for_each_net_rcu(net) {
990 if (data->netgroup == hwsim_net_get_netgroup(net)) {
991 res = genlmsg_unicast(net, skb, portid);
992 found = true;
993 break;
994 }
995 }
996 rcu_read_unlock();
997
998 if (!found)
999 nlmsg_free(skb);
1000
1001 return res;
1002}
1003
1004static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1005{
1006 u16 result = 0;
1007
1008 if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1009 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1010 if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1011 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1012 if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1013 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1014 if (rate->flags & IEEE80211_TX_RC_MCS)
1015 result |= MAC80211_HWSIM_TX_RC_MCS;
1016 if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1017 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1018 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1019 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1020 if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1021 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1022 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1023 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1024 if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1025 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1026 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1027 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1028 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1029 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1030
1031 return result;
1032}
1033
1034static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1035 struct sk_buff *my_skb,
1036 int dst_portid)
1037{
1038 struct sk_buff *skb;
1039 struct mac80211_hwsim_data *data = hw->priv;
1040 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1041 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1042 void *msg_head;
1043 unsigned int hwsim_flags = 0;
1044 int i;
1045 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1046 struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1047 uintptr_t cookie;
1048
1049 if (data->ps != PS_DISABLED)
1050 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1051 /* If the queue contains MAX_QUEUE skb's drop some */
1052 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1053 /* Droping until WARN_QUEUE level */
1054 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1055 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1056 data->tx_dropped++;
1057 }
1058 }
1059
1060 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1061 if (skb == NULL)
1062 goto nla_put_failure;
1063
1064 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1065 HWSIM_CMD_FRAME);
1066 if (msg_head == NULL) {
1067 pr_debug("mac80211_hwsim: problem with msg_head\n");
1068 goto nla_put_failure;
1069 }
1070
1071 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1072 ETH_ALEN, data->addresses[1].addr))
1073 goto nla_put_failure;
1074
1075 /* We get the skb->data */
1076 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1077 goto nla_put_failure;
1078
1079 /* We get the flags for this transmission, and we translate them to
1080 wmediumd flags */
1081
1082 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1083 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1084
1085 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1086 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1087
1088 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1089 goto nla_put_failure;
1090
1091 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1092 goto nla_put_failure;
1093
1094 /* We get the tx control (rate and retries) info*/
1095
1096 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1097 tx_attempts[i].idx = info->status.rates[i].idx;
1098 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1099 tx_attempts[i].count = info->status.rates[i].count;
1100 tx_attempts_flags[i].flags =
1101 trans_tx_rate_flags_ieee2hwsim(
1102 &info->status.rates[i]);
1103 }
1104
1105 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1106 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1107 tx_attempts))
1108 goto nla_put_failure;
1109
1110 if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1111 sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1112 tx_attempts_flags))
1113 goto nla_put_failure;
1114
1115 /* We create a cookie to identify this skb */
1116 data->pending_cookie++;
1117 cookie = data->pending_cookie;
1118 info->rate_driver_data[0] = (void *)cookie;
1119 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1120 goto nla_put_failure;
1121
1122 genlmsg_end(skb, msg_head);
1123 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1124 goto err_free_txskb;
1125
1126 /* Enqueue the packet */
1127 skb_queue_tail(&data->pending, my_skb);
1128 data->tx_pkts++;
1129 data->tx_bytes += my_skb->len;
1130 return;
1131
1132nla_put_failure:
1133 nlmsg_free(skb);
1134err_free_txskb:
1135 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1136 ieee80211_free_txskb(hw, my_skb);
1137 data->tx_failed++;
1138}
1139
1140static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1141 struct ieee80211_channel *c2)
1142{
1143 if (!c1 || !c2)
1144 return false;
1145
1146 return c1->center_freq == c2->center_freq;
1147}
1148
1149struct tx_iter_data {
1150 struct ieee80211_channel *channel;
1151 bool receive;
1152};
1153
1154static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1155 struct ieee80211_vif *vif)
1156{
1157 struct tx_iter_data *data = _data;
1158
1159 if (!vif->chanctx_conf)
1160 return;
1161
1162 if (!hwsim_chans_compat(data->channel,
1163 rcu_dereference(vif->chanctx_conf)->def.chan))
1164 return;
1165
1166 data->receive = true;
1167}
1168
1169static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1170{
1171 /*
1172 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1173 * e.g. like this:
1174 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1175 * (but you should use a valid OUI, not that)
1176 *
1177 * If anyone wants to 'donate' a radiotap OUI/subns code
1178 * please send a patch removing this #ifdef and changing
1179 * the values accordingly.
1180 */
1181#ifdef HWSIM_RADIOTAP_OUI
1182 struct ieee80211_vendor_radiotap *rtap;
1183
1184 /*
1185 * Note that this code requires the headroom in the SKB
1186 * that was allocated earlier.
1187 */
1188 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1189 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1190 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1191 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1192 rtap->subns = 127;
1193
1194 /*
1195 * Radiotap vendor namespaces can (and should) also be
1196 * split into fields by using the standard radiotap
1197 * presence bitmap mechanism. Use just BIT(0) here for
1198 * the presence bitmap.
1199 */
1200 rtap->present = BIT(0);
1201 /* We have 8 bytes of (dummy) data */
1202 rtap->len = 8;
1203 /* For testing, also require it to be aligned */
1204 rtap->align = 8;
1205 /* And also test that padding works, 4 bytes */
1206 rtap->pad = 4;
1207 /* push the data */
1208 memcpy(rtap->data, "ABCDEFGH", 8);
1209 /* make sure to clear padding, mac80211 doesn't */
1210 memset(rtap->data + 8, 0, 4);
1211
1212 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1213#endif
1214}
1215
1216static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1217 struct sk_buff *skb,
1218 struct ieee80211_channel *chan)
1219{
1220 struct mac80211_hwsim_data *data = hw->priv, *data2;
1221 bool ack = false;
1222 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1223 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1224 struct ieee80211_rx_status rx_status;
1225 u64 now;
1226
1227 memset(&rx_status, 0, sizeof(rx_status));
1228 rx_status.flag |= RX_FLAG_MACTIME_START;
1229 rx_status.freq = chan->center_freq;
1230 rx_status.band = chan->band;
1231 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1232 rx_status.rate_idx =
1233 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1234 rx_status.nss =
1235 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1236 rx_status.encoding = RX_ENC_VHT;
1237 } else {
1238 rx_status.rate_idx = info->control.rates[0].idx;
1239 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1240 rx_status.encoding = RX_ENC_HT;
1241 }
1242 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1243 rx_status.bw = RATE_INFO_BW_40;
1244 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1245 rx_status.bw = RATE_INFO_BW_80;
1246 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1247 rx_status.bw = RATE_INFO_BW_160;
1248 else
1249 rx_status.bw = RATE_INFO_BW_20;
1250 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1251 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1252 /* TODO: simulate real signal strength (and optional packet loss) */
1253 rx_status.signal = -50;
1254 if (info->control.vif)
1255 rx_status.signal += info->control.vif->bss_conf.txpower;
1256
1257 if (data->ps != PS_DISABLED)
1258 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1259
1260 /* release the skb's source info */
1261 skb_orphan(skb);
1262 skb_dst_drop(skb);
1263 skb->mark = 0;
1264 skb_ext_reset(skb);
1265 nf_reset_ct(skb);
1266
1267 /*
1268 * Get absolute mactime here so all HWs RX at the "same time", and
1269 * absolute TX time for beacon mactime so the timestamp matches.
1270 * Giving beacons a different mactime than non-beacons looks messy, but
1271 * it helps the Toffset be exact and a ~10us mactime discrepancy
1272 * probably doesn't really matter.
1273 */
1274 if (ieee80211_is_beacon(hdr->frame_control) ||
1275 ieee80211_is_probe_resp(hdr->frame_control)) {
1276 rx_status.boottime_ns = ktime_get_boottime_ns();
1277 now = data->abs_bcn_ts;
1278 } else {
1279 now = mac80211_hwsim_get_tsf_raw();
1280 }
1281
1282 /* Copy skb to all enabled radios that are on the current frequency */
1283 spin_lock(&hwsim_radio_lock);
1284 list_for_each_entry(data2, &hwsim_radios, list) {
1285 struct sk_buff *nskb;
1286 struct tx_iter_data tx_iter_data = {
1287 .receive = false,
1288 .channel = chan,
1289 };
1290
1291 if (data == data2)
1292 continue;
1293
1294 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1295 !hwsim_ps_rx_ok(data2, skb))
1296 continue;
1297
1298 if (!(data->group & data2->group))
1299 continue;
1300
1301 if (data->netgroup != data2->netgroup)
1302 continue;
1303
1304 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1305 !hwsim_chans_compat(chan, data2->channel)) {
1306 ieee80211_iterate_active_interfaces_atomic(
1307 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1308 mac80211_hwsim_tx_iter, &tx_iter_data);
1309 if (!tx_iter_data.receive)
1310 continue;
1311 }
1312
1313 /*
1314 * reserve some space for our vendor and the normal
1315 * radiotap header, since we're copying anyway
1316 */
1317 if (skb->len < PAGE_SIZE && paged_rx) {
1318 struct page *page = alloc_page(GFP_ATOMIC);
1319
1320 if (!page)
1321 continue;
1322
1323 nskb = dev_alloc_skb(128);
1324 if (!nskb) {
1325 __free_page(page);
1326 continue;
1327 }
1328
1329 memcpy(page_address(page), skb->data, skb->len);
1330 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1331 } else {
1332 nskb = skb_copy(skb, GFP_ATOMIC);
1333 if (!nskb)
1334 continue;
1335 }
1336
1337 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1338 ack = true;
1339
1340 rx_status.mactime = now + data2->tsf_offset;
1341
1342 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1343
1344 mac80211_hwsim_add_vendor_rtap(nskb);
1345
1346 data2->rx_pkts++;
1347 data2->rx_bytes += nskb->len;
1348 ieee80211_rx_irqsafe(data2->hw, nskb);
1349 }
1350 spin_unlock(&hwsim_radio_lock);
1351
1352 return ack;
1353}
1354
1355static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1356 struct ieee80211_tx_control *control,
1357 struct sk_buff *skb)
1358{
1359 struct mac80211_hwsim_data *data = hw->priv;
1360 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1361 struct ieee80211_hdr *hdr = (void *)skb->data;
1362 struct ieee80211_chanctx_conf *chanctx_conf;
1363 struct ieee80211_channel *channel;
1364 bool ack;
1365 u32 _portid;
1366
1367 if (WARN_ON(skb->len < 10)) {
1368 /* Should not happen; just a sanity check for addr1 use */
1369 ieee80211_free_txskb(hw, skb);
1370 return;
1371 }
1372
1373 if (!data->use_chanctx) {
1374 channel = data->channel;
1375 } else if (txi->hw_queue == 4) {
1376 channel = data->tmp_chan;
1377 } else {
1378 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1379 if (chanctx_conf)
1380 channel = chanctx_conf->def.chan;
1381 else
1382 channel = NULL;
1383 }
1384
1385 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1386 ieee80211_free_txskb(hw, skb);
1387 return;
1388 }
1389
1390 if (data->idle && !data->tmp_chan) {
1391 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1392 ieee80211_free_txskb(hw, skb);
1393 return;
1394 }
1395
1396 if (txi->control.vif)
1397 hwsim_check_magic(txi->control.vif);
1398 if (control->sta)
1399 hwsim_check_sta_magic(control->sta);
1400
1401 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1402 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1403 txi->control.rates,
1404 ARRAY_SIZE(txi->control.rates));
1405
1406 if (skb->len >= 24 + 8 &&
1407 ieee80211_is_probe_resp(hdr->frame_control)) {
1408 /* fake header transmission time */
1409 struct ieee80211_mgmt *mgmt;
1410 struct ieee80211_rate *txrate;
1411 u64 ts;
1412
1413 mgmt = (struct ieee80211_mgmt *)skb->data;
1414 txrate = ieee80211_get_tx_rate(hw, txi);
1415 ts = mac80211_hwsim_get_tsf_raw();
1416 mgmt->u.probe_resp.timestamp =
1417 cpu_to_le64(ts + data->tsf_offset +
1418 24 * 8 * 10 / txrate->bitrate);
1419 }
1420
1421 mac80211_hwsim_monitor_rx(hw, skb, channel);
1422
1423 /* wmediumd mode check */
1424 _portid = READ_ONCE(data->wmediumd);
1425
1426 if (_portid)
1427 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1428
1429 /* NO wmediumd detected, perfect medium simulation */
1430 data->tx_pkts++;
1431 data->tx_bytes += skb->len;
1432 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1433
1434 if (ack && skb->len >= 16)
1435 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1436
1437 ieee80211_tx_info_clear_status(txi);
1438
1439 /* frame was transmitted at most favorable rate at first attempt */
1440 txi->control.rates[0].count = 1;
1441 txi->control.rates[1].idx = -1;
1442
1443 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1444 txi->flags |= IEEE80211_TX_STAT_ACK;
1445 ieee80211_tx_status_irqsafe(hw, skb);
1446}
1447
1448
1449static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1450{
1451 struct mac80211_hwsim_data *data = hw->priv;
1452 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1453 data->started = true;
1454 return 0;
1455}
1456
1457
1458static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1459{
1460 struct mac80211_hwsim_data *data = hw->priv;
1461 data->started = false;
1462 hrtimer_cancel(&data->beacon_timer);
1463 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1464}
1465
1466
1467static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1468 struct ieee80211_vif *vif)
1469{
1470 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1471 __func__, ieee80211_vif_type_p2p(vif),
1472 vif->addr);
1473 hwsim_set_magic(vif);
1474
1475 vif->cab_queue = 0;
1476 vif->hw_queue[IEEE80211_AC_VO] = 0;
1477 vif->hw_queue[IEEE80211_AC_VI] = 1;
1478 vif->hw_queue[IEEE80211_AC_BE] = 2;
1479 vif->hw_queue[IEEE80211_AC_BK] = 3;
1480
1481 return 0;
1482}
1483
1484
1485static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1486 struct ieee80211_vif *vif,
1487 enum nl80211_iftype newtype,
1488 bool newp2p)
1489{
1490 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1491 wiphy_dbg(hw->wiphy,
1492 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1493 __func__, ieee80211_vif_type_p2p(vif),
1494 newtype, vif->addr);
1495 hwsim_check_magic(vif);
1496
1497 /*
1498 * interface may change from non-AP to AP in
1499 * which case this needs to be set up again
1500 */
1501 vif->cab_queue = 0;
1502
1503 return 0;
1504}
1505
1506static void mac80211_hwsim_remove_interface(
1507 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1508{
1509 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1510 __func__, ieee80211_vif_type_p2p(vif),
1511 vif->addr);
1512 hwsim_check_magic(vif);
1513 hwsim_clear_magic(vif);
1514}
1515
1516static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1517 struct sk_buff *skb,
1518 struct ieee80211_channel *chan)
1519{
1520 struct mac80211_hwsim_data *data = hw->priv;
1521 u32 _pid = READ_ONCE(data->wmediumd);
1522
1523 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1524 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1525 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1526 txi->control.rates,
1527 ARRAY_SIZE(txi->control.rates));
1528 }
1529
1530 mac80211_hwsim_monitor_rx(hw, skb, chan);
1531
1532 if (_pid)
1533 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1534
1535 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1536 dev_kfree_skb(skb);
1537}
1538
1539static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1540 struct ieee80211_vif *vif)
1541{
1542 struct mac80211_hwsim_data *data = arg;
1543 struct ieee80211_hw *hw = data->hw;
1544 struct ieee80211_tx_info *info;
1545 struct ieee80211_rate *txrate;
1546 struct ieee80211_mgmt *mgmt;
1547 struct sk_buff *skb;
1548
1549 hwsim_check_magic(vif);
1550
1551 if (vif->type != NL80211_IFTYPE_AP &&
1552 vif->type != NL80211_IFTYPE_MESH_POINT &&
1553 vif->type != NL80211_IFTYPE_ADHOC)
1554 return;
1555
1556 skb = ieee80211_beacon_get(hw, vif);
1557 if (skb == NULL)
1558 return;
1559 info = IEEE80211_SKB_CB(skb);
1560 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1561 ieee80211_get_tx_rates(vif, NULL, skb,
1562 info->control.rates,
1563 ARRAY_SIZE(info->control.rates));
1564
1565 txrate = ieee80211_get_tx_rate(hw, info);
1566
1567 mgmt = (struct ieee80211_mgmt *) skb->data;
1568 /* fake header transmission time */
1569 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1570 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1571 data->tsf_offset +
1572 24 * 8 * 10 / txrate->bitrate);
1573
1574 mac80211_hwsim_tx_frame(hw, skb,
1575 rcu_dereference(vif->chanctx_conf)->def.chan);
1576
1577 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1578 ieee80211_csa_finish(vif);
1579}
1580
1581static enum hrtimer_restart
1582mac80211_hwsim_beacon(struct hrtimer *timer)
1583{
1584 struct mac80211_hwsim_data *data =
1585 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1586 struct ieee80211_hw *hw = data->hw;
1587 u64 bcn_int = data->beacon_int;
1588
1589 if (!data->started)
1590 return HRTIMER_NORESTART;
1591
1592 ieee80211_iterate_active_interfaces_atomic(
1593 hw, IEEE80211_IFACE_ITER_NORMAL,
1594 mac80211_hwsim_beacon_tx, data);
1595
1596 /* beacon at new TBTT + beacon interval */
1597 if (data->bcn_delta) {
1598 bcn_int -= data->bcn_delta;
1599 data->bcn_delta = 0;
1600 }
1601 hrtimer_forward(&data->beacon_timer, hrtimer_get_expires(timer),
1602 ns_to_ktime(bcn_int * NSEC_PER_USEC));
1603 return HRTIMER_RESTART;
1604}
1605
1606static const char * const hwsim_chanwidths[] = {
1607 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1608 [NL80211_CHAN_WIDTH_20] = "ht20",
1609 [NL80211_CHAN_WIDTH_40] = "ht40",
1610 [NL80211_CHAN_WIDTH_80] = "vht80",
1611 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1612 [NL80211_CHAN_WIDTH_160] = "vht160",
1613};
1614
1615static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1616{
1617 struct mac80211_hwsim_data *data = hw->priv;
1618 struct ieee80211_conf *conf = &hw->conf;
1619 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1620 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1621 [IEEE80211_SMPS_OFF] = "off",
1622 [IEEE80211_SMPS_STATIC] = "static",
1623 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1624 };
1625 int idx;
1626
1627 if (conf->chandef.chan)
1628 wiphy_dbg(hw->wiphy,
1629 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1630 __func__,
1631 conf->chandef.chan->center_freq,
1632 conf->chandef.center_freq1,
1633 conf->chandef.center_freq2,
1634 hwsim_chanwidths[conf->chandef.width],
1635 !!(conf->flags & IEEE80211_CONF_IDLE),
1636 !!(conf->flags & IEEE80211_CONF_PS),
1637 smps_modes[conf->smps_mode]);
1638 else
1639 wiphy_dbg(hw->wiphy,
1640 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1641 __func__,
1642 !!(conf->flags & IEEE80211_CONF_IDLE),
1643 !!(conf->flags & IEEE80211_CONF_PS),
1644 smps_modes[conf->smps_mode]);
1645
1646 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1647
1648 WARN_ON(conf->chandef.chan && data->use_chanctx);
1649
1650 mutex_lock(&data->mutex);
1651 if (data->scanning && conf->chandef.chan) {
1652 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1653 if (data->survey_data[idx].channel == data->channel) {
1654 data->survey_data[idx].start =
1655 data->survey_data[idx].next_start;
1656 data->survey_data[idx].end = jiffies;
1657 break;
1658 }
1659 }
1660
1661 data->channel = conf->chandef.chan;
1662
1663 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1664 if (data->survey_data[idx].channel &&
1665 data->survey_data[idx].channel != data->channel)
1666 continue;
1667 data->survey_data[idx].channel = data->channel;
1668 data->survey_data[idx].next_start = jiffies;
1669 break;
1670 }
1671 } else {
1672 data->channel = conf->chandef.chan;
1673 }
1674 mutex_unlock(&data->mutex);
1675
1676 if (!data->started || !data->beacon_int)
1677 hrtimer_cancel(&data->beacon_timer);
1678 else if (!hrtimer_is_queued(&data->beacon_timer)) {
1679 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1680 u32 bcn_int = data->beacon_int;
1681 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1682
1683 hrtimer_start(&data->beacon_timer,
1684 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1685 HRTIMER_MODE_REL_SOFT);
1686 }
1687
1688 return 0;
1689}
1690
1691
1692static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1693 unsigned int changed_flags,
1694 unsigned int *total_flags,u64 multicast)
1695{
1696 struct mac80211_hwsim_data *data = hw->priv;
1697
1698 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1699
1700 data->rx_filter = 0;
1701 if (*total_flags & FIF_ALLMULTI)
1702 data->rx_filter |= FIF_ALLMULTI;
1703
1704 *total_flags = data->rx_filter;
1705}
1706
1707static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1708 struct ieee80211_vif *vif)
1709{
1710 unsigned int *count = data;
1711 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1712
1713 if (vp->bcn_en)
1714 (*count)++;
1715}
1716
1717static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1718 struct ieee80211_vif *vif,
1719 struct ieee80211_bss_conf *info,
1720 u32 changed)
1721{
1722 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1723 struct mac80211_hwsim_data *data = hw->priv;
1724
1725 hwsim_check_magic(vif);
1726
1727 wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1728 __func__, changed, vif->addr);
1729
1730 if (changed & BSS_CHANGED_BSSID) {
1731 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1732 __func__, info->bssid);
1733 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1734 }
1735
1736 if (changed & BSS_CHANGED_ASSOC) {
1737 wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1738 info->assoc, info->aid);
1739 vp->assoc = info->assoc;
1740 vp->aid = info->aid;
1741 }
1742
1743 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1744 wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1745 info->enable_beacon, info->beacon_int);
1746 vp->bcn_en = info->enable_beacon;
1747 if (data->started &&
1748 !hrtimer_is_queued(&data->beacon_timer) &&
1749 info->enable_beacon) {
1750 u64 tsf, until_tbtt;
1751 u32 bcn_int;
1752 data->beacon_int = info->beacon_int * 1024;
1753 tsf = mac80211_hwsim_get_tsf(hw, vif);
1754 bcn_int = data->beacon_int;
1755 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1756
1757 hrtimer_start(&data->beacon_timer,
1758 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1759 HRTIMER_MODE_REL_SOFT);
1760 } else if (!info->enable_beacon) {
1761 unsigned int count = 0;
1762 ieee80211_iterate_active_interfaces_atomic(
1763 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1764 mac80211_hwsim_bcn_en_iter, &count);
1765 wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
1766 count);
1767 if (count == 0) {
1768 hrtimer_cancel(&data->beacon_timer);
1769 data->beacon_int = 0;
1770 }
1771 }
1772 }
1773
1774 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1775 wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
1776 info->use_cts_prot);
1777 }
1778
1779 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1780 wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
1781 info->use_short_preamble);
1782 }
1783
1784 if (changed & BSS_CHANGED_ERP_SLOT) {
1785 wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1786 }
1787
1788 if (changed & BSS_CHANGED_HT) {
1789 wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
1790 info->ht_operation_mode);
1791 }
1792
1793 if (changed & BSS_CHANGED_BASIC_RATES) {
1794 wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1795 (unsigned long long) info->basic_rates);
1796 }
1797
1798 if (changed & BSS_CHANGED_TXPOWER)
1799 wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1800}
1801
1802static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1803 struct ieee80211_vif *vif,
1804 struct ieee80211_sta *sta)
1805{
1806 hwsim_check_magic(vif);
1807 hwsim_set_sta_magic(sta);
1808
1809 return 0;
1810}
1811
1812static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1813 struct ieee80211_vif *vif,
1814 struct ieee80211_sta *sta)
1815{
1816 hwsim_check_magic(vif);
1817 hwsim_clear_sta_magic(sta);
1818
1819 return 0;
1820}
1821
1822static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1823 struct ieee80211_vif *vif,
1824 enum sta_notify_cmd cmd,
1825 struct ieee80211_sta *sta)
1826{
1827 hwsim_check_magic(vif);
1828
1829 switch (cmd) {
1830 case STA_NOTIFY_SLEEP:
1831 case STA_NOTIFY_AWAKE:
1832 /* TODO: make good use of these flags */
1833 break;
1834 default:
1835 WARN(1, "Invalid sta notify: %d\n", cmd);
1836 break;
1837 }
1838}
1839
1840static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1841 struct ieee80211_sta *sta,
1842 bool set)
1843{
1844 hwsim_check_sta_magic(sta);
1845 return 0;
1846}
1847
1848static int mac80211_hwsim_conf_tx(
1849 struct ieee80211_hw *hw,
1850 struct ieee80211_vif *vif, u16 queue,
1851 const struct ieee80211_tx_queue_params *params)
1852{
1853 wiphy_dbg(hw->wiphy,
1854 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1855 __func__, queue,
1856 params->txop, params->cw_min,
1857 params->cw_max, params->aifs);
1858 return 0;
1859}
1860
1861static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1862 struct survey_info *survey)
1863{
1864 struct mac80211_hwsim_data *hwsim = hw->priv;
1865
1866 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1867 return -ENOENT;
1868
1869 mutex_lock(&hwsim->mutex);
1870 survey->channel = hwsim->survey_data[idx].channel;
1871 if (!survey->channel) {
1872 mutex_unlock(&hwsim->mutex);
1873 return -ENOENT;
1874 }
1875
1876 /*
1877 * Magically conjured dummy values --- this is only ok for simulated hardware.
1878 *
1879 * A real driver which cannot determine real values noise MUST NOT
1880 * report any, especially not a magically conjured ones :-)
1881 */
1882 survey->filled = SURVEY_INFO_NOISE_DBM |
1883 SURVEY_INFO_TIME |
1884 SURVEY_INFO_TIME_BUSY;
1885 survey->noise = -92;
1886 survey->time =
1887 jiffies_to_msecs(hwsim->survey_data[idx].end -
1888 hwsim->survey_data[idx].start);
1889 /* report 12.5% of channel time is used */
1890 survey->time_busy = survey->time/8;
1891 mutex_unlock(&hwsim->mutex);
1892
1893 return 0;
1894}
1895
1896#ifdef CONFIG_NL80211_TESTMODE
1897/*
1898 * This section contains example code for using netlink
1899 * attributes with the testmode command in nl80211.
1900 */
1901
1902/* These enums need to be kept in sync with userspace */
1903enum hwsim_testmode_attr {
1904 __HWSIM_TM_ATTR_INVALID = 0,
1905 HWSIM_TM_ATTR_CMD = 1,
1906 HWSIM_TM_ATTR_PS = 2,
1907
1908 /* keep last */
1909 __HWSIM_TM_ATTR_AFTER_LAST,
1910 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1911};
1912
1913enum hwsim_testmode_cmd {
1914 HWSIM_TM_CMD_SET_PS = 0,
1915 HWSIM_TM_CMD_GET_PS = 1,
1916 HWSIM_TM_CMD_STOP_QUEUES = 2,
1917 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1918};
1919
1920static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1921 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1922 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1923};
1924
1925static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1926 struct ieee80211_vif *vif,
1927 void *data, int len)
1928{
1929 struct mac80211_hwsim_data *hwsim = hw->priv;
1930 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1931 struct sk_buff *skb;
1932 int err, ps;
1933
1934 err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
1935 hwsim_testmode_policy, NULL);
1936 if (err)
1937 return err;
1938
1939 if (!tb[HWSIM_TM_ATTR_CMD])
1940 return -EINVAL;
1941
1942 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1943 case HWSIM_TM_CMD_SET_PS:
1944 if (!tb[HWSIM_TM_ATTR_PS])
1945 return -EINVAL;
1946 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1947 return hwsim_fops_ps_write(hwsim, ps);
1948 case HWSIM_TM_CMD_GET_PS:
1949 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1950 nla_total_size(sizeof(u32)));
1951 if (!skb)
1952 return -ENOMEM;
1953 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1954 goto nla_put_failure;
1955 return cfg80211_testmode_reply(skb);
1956 case HWSIM_TM_CMD_STOP_QUEUES:
1957 ieee80211_stop_queues(hw);
1958 return 0;
1959 case HWSIM_TM_CMD_WAKE_QUEUES:
1960 ieee80211_wake_queues(hw);
1961 return 0;
1962 default:
1963 return -EOPNOTSUPP;
1964 }
1965
1966 nla_put_failure:
1967 kfree_skb(skb);
1968 return -ENOBUFS;
1969}
1970#endif
1971
1972static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1973 struct ieee80211_vif *vif,
1974 struct ieee80211_ampdu_params *params)
1975{
1976 struct ieee80211_sta *sta = params->sta;
1977 enum ieee80211_ampdu_mlme_action action = params->action;
1978 u16 tid = params->tid;
1979
1980 switch (action) {
1981 case IEEE80211_AMPDU_TX_START:
1982 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1983 break;
1984 case IEEE80211_AMPDU_TX_STOP_CONT:
1985 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1986 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1987 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1988 break;
1989 case IEEE80211_AMPDU_TX_OPERATIONAL:
1990 break;
1991 case IEEE80211_AMPDU_RX_START:
1992 case IEEE80211_AMPDU_RX_STOP:
1993 break;
1994 default:
1995 return -EOPNOTSUPP;
1996 }
1997
1998 return 0;
1999}
2000
2001static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2002 struct ieee80211_vif *vif,
2003 u32 queues, bool drop)
2004{
2005 /* Not implemented, queues only on kernel side */
2006}
2007
2008static void hw_scan_work(struct work_struct *work)
2009{
2010 struct mac80211_hwsim_data *hwsim =
2011 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2012 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2013 int dwell, i;
2014
2015 mutex_lock(&hwsim->mutex);
2016 if (hwsim->scan_chan_idx >= req->n_channels) {
2017 struct cfg80211_scan_info info = {
2018 .aborted = false,
2019 };
2020
2021 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2022 ieee80211_scan_completed(hwsim->hw, &info);
2023 hwsim->hw_scan_request = NULL;
2024 hwsim->hw_scan_vif = NULL;
2025 hwsim->tmp_chan = NULL;
2026 mutex_unlock(&hwsim->mutex);
2027 return;
2028 }
2029
2030 wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2031 req->channels[hwsim->scan_chan_idx]->center_freq);
2032
2033 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2034 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2035 IEEE80211_CHAN_RADAR) ||
2036 !req->n_ssids) {
2037 dwell = 120;
2038 } else {
2039 dwell = 30;
2040 /* send probes */
2041 for (i = 0; i < req->n_ssids; i++) {
2042 struct sk_buff *probe;
2043 struct ieee80211_mgmt *mgmt;
2044
2045 probe = ieee80211_probereq_get(hwsim->hw,
2046 hwsim->scan_addr,
2047 req->ssids[i].ssid,
2048 req->ssids[i].ssid_len,
2049 req->ie_len);
2050 if (!probe)
2051 continue;
2052
2053 mgmt = (struct ieee80211_mgmt *) probe->data;
2054 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2055 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2056
2057 if (req->ie_len)
2058 skb_put_data(probe, req->ie, req->ie_len);
2059
2060 local_bh_disable();
2061 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2062 hwsim->tmp_chan);
2063 local_bh_enable();
2064 }
2065 }
2066 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2067 msecs_to_jiffies(dwell));
2068 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2069 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2070 hwsim->survey_data[hwsim->scan_chan_idx].end =
2071 jiffies + msecs_to_jiffies(dwell);
2072 hwsim->scan_chan_idx++;
2073 mutex_unlock(&hwsim->mutex);
2074}
2075
2076static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2077 struct ieee80211_vif *vif,
2078 struct ieee80211_scan_request *hw_req)
2079{
2080 struct mac80211_hwsim_data *hwsim = hw->priv;
2081 struct cfg80211_scan_request *req = &hw_req->req;
2082
2083 mutex_lock(&hwsim->mutex);
2084 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2085 mutex_unlock(&hwsim->mutex);
2086 return -EBUSY;
2087 }
2088 hwsim->hw_scan_request = req;
2089 hwsim->hw_scan_vif = vif;
2090 hwsim->scan_chan_idx = 0;
2091 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2092 get_random_mask_addr(hwsim->scan_addr,
2093 hw_req->req.mac_addr,
2094 hw_req->req.mac_addr_mask);
2095 else
2096 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2097 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2098 mutex_unlock(&hwsim->mutex);
2099
2100 wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2101
2102 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2103
2104 return 0;
2105}
2106
2107static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2108 struct ieee80211_vif *vif)
2109{
2110 struct mac80211_hwsim_data *hwsim = hw->priv;
2111 struct cfg80211_scan_info info = {
2112 .aborted = true,
2113 };
2114
2115 wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2116
2117 cancel_delayed_work_sync(&hwsim->hw_scan);
2118
2119 mutex_lock(&hwsim->mutex);
2120 ieee80211_scan_completed(hwsim->hw, &info);
2121 hwsim->tmp_chan = NULL;
2122 hwsim->hw_scan_request = NULL;
2123 hwsim->hw_scan_vif = NULL;
2124 mutex_unlock(&hwsim->mutex);
2125}
2126
2127static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2128 struct ieee80211_vif *vif,
2129 const u8 *mac_addr)
2130{
2131 struct mac80211_hwsim_data *hwsim = hw->priv;
2132
2133 mutex_lock(&hwsim->mutex);
2134
2135 if (hwsim->scanning) {
2136 pr_debug("two hwsim sw_scans detected!\n");
2137 goto out;
2138 }
2139
2140 pr_debug("hwsim sw_scan request, prepping stuff\n");
2141
2142 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2143 hwsim->scanning = true;
2144 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2145
2146out:
2147 mutex_unlock(&hwsim->mutex);
2148}
2149
2150static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2151 struct ieee80211_vif *vif)
2152{
2153 struct mac80211_hwsim_data *hwsim = hw->priv;
2154
2155 mutex_lock(&hwsim->mutex);
2156
2157 pr_debug("hwsim sw_scan_complete\n");
2158 hwsim->scanning = false;
2159 eth_zero_addr(hwsim->scan_addr);
2160
2161 mutex_unlock(&hwsim->mutex);
2162}
2163
2164static void hw_roc_start(struct work_struct *work)
2165{
2166 struct mac80211_hwsim_data *hwsim =
2167 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2168
2169 mutex_lock(&hwsim->mutex);
2170
2171 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2172 hwsim->tmp_chan = hwsim->roc_chan;
2173 ieee80211_ready_on_channel(hwsim->hw);
2174
2175 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2176 msecs_to_jiffies(hwsim->roc_duration));
2177
2178 mutex_unlock(&hwsim->mutex);
2179}
2180
2181static void hw_roc_done(struct work_struct *work)
2182{
2183 struct mac80211_hwsim_data *hwsim =
2184 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2185
2186 mutex_lock(&hwsim->mutex);
2187 ieee80211_remain_on_channel_expired(hwsim->hw);
2188 hwsim->tmp_chan = NULL;
2189 mutex_unlock(&hwsim->mutex);
2190
2191 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2192}
2193
2194static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2195 struct ieee80211_vif *vif,
2196 struct ieee80211_channel *chan,
2197 int duration,
2198 enum ieee80211_roc_type type)
2199{
2200 struct mac80211_hwsim_data *hwsim = hw->priv;
2201
2202 mutex_lock(&hwsim->mutex);
2203 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2204 mutex_unlock(&hwsim->mutex);
2205 return -EBUSY;
2206 }
2207
2208 hwsim->roc_chan = chan;
2209 hwsim->roc_duration = duration;
2210 mutex_unlock(&hwsim->mutex);
2211
2212 wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2213 chan->center_freq, duration);
2214 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2215
2216 return 0;
2217}
2218
2219static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2220 struct ieee80211_vif *vif)
2221{
2222 struct mac80211_hwsim_data *hwsim = hw->priv;
2223
2224 cancel_delayed_work_sync(&hwsim->roc_start);
2225 cancel_delayed_work_sync(&hwsim->roc_done);
2226
2227 mutex_lock(&hwsim->mutex);
2228 hwsim->tmp_chan = NULL;
2229 mutex_unlock(&hwsim->mutex);
2230
2231 wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2232
2233 return 0;
2234}
2235
2236static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2237 struct ieee80211_chanctx_conf *ctx)
2238{
2239 hwsim_set_chanctx_magic(ctx);
2240 wiphy_dbg(hw->wiphy,
2241 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2242 ctx->def.chan->center_freq, ctx->def.width,
2243 ctx->def.center_freq1, ctx->def.center_freq2);
2244 return 0;
2245}
2246
2247static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2248 struct ieee80211_chanctx_conf *ctx)
2249{
2250 wiphy_dbg(hw->wiphy,
2251 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2252 ctx->def.chan->center_freq, ctx->def.width,
2253 ctx->def.center_freq1, ctx->def.center_freq2);
2254 hwsim_check_chanctx_magic(ctx);
2255 hwsim_clear_chanctx_magic(ctx);
2256}
2257
2258static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2259 struct ieee80211_chanctx_conf *ctx,
2260 u32 changed)
2261{
2262 hwsim_check_chanctx_magic(ctx);
2263 wiphy_dbg(hw->wiphy,
2264 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2265 ctx->def.chan->center_freq, ctx->def.width,
2266 ctx->def.center_freq1, ctx->def.center_freq2);
2267}
2268
2269static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2270 struct ieee80211_vif *vif,
2271 struct ieee80211_chanctx_conf *ctx)
2272{
2273 hwsim_check_magic(vif);
2274 hwsim_check_chanctx_magic(ctx);
2275
2276 return 0;
2277}
2278
2279static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2280 struct ieee80211_vif *vif,
2281 struct ieee80211_chanctx_conf *ctx)
2282{
2283 hwsim_check_magic(vif);
2284 hwsim_check_chanctx_magic(ctx);
2285}
2286
2287static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2288 "tx_pkts_nic",
2289 "tx_bytes_nic",
2290 "rx_pkts_nic",
2291 "rx_bytes_nic",
2292 "d_tx_dropped",
2293 "d_tx_failed",
2294 "d_ps_mode",
2295 "d_group",
2296};
2297
2298#define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2299
2300static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2301 struct ieee80211_vif *vif,
2302 u32 sset, u8 *data)
2303{
2304 if (sset == ETH_SS_STATS)
2305 memcpy(data, *mac80211_hwsim_gstrings_stats,
2306 sizeof(mac80211_hwsim_gstrings_stats));
2307}
2308
2309static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2310 struct ieee80211_vif *vif, int sset)
2311{
2312 if (sset == ETH_SS_STATS)
2313 return MAC80211_HWSIM_SSTATS_LEN;
2314 return 0;
2315}
2316
2317static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2318 struct ieee80211_vif *vif,
2319 struct ethtool_stats *stats, u64 *data)
2320{
2321 struct mac80211_hwsim_data *ar = hw->priv;
2322 int i = 0;
2323
2324 data[i++] = ar->tx_pkts;
2325 data[i++] = ar->tx_bytes;
2326 data[i++] = ar->rx_pkts;
2327 data[i++] = ar->rx_bytes;
2328 data[i++] = ar->tx_dropped;
2329 data[i++] = ar->tx_failed;
2330 data[i++] = ar->ps;
2331 data[i++] = ar->group;
2332
2333 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2334}
2335
2336#define HWSIM_COMMON_OPS \
2337 .tx = mac80211_hwsim_tx, \
2338 .start = mac80211_hwsim_start, \
2339 .stop = mac80211_hwsim_stop, \
2340 .add_interface = mac80211_hwsim_add_interface, \
2341 .change_interface = mac80211_hwsim_change_interface, \
2342 .remove_interface = mac80211_hwsim_remove_interface, \
2343 .config = mac80211_hwsim_config, \
2344 .configure_filter = mac80211_hwsim_configure_filter, \
2345 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2346 .sta_add = mac80211_hwsim_sta_add, \
2347 .sta_remove = mac80211_hwsim_sta_remove, \
2348 .sta_notify = mac80211_hwsim_sta_notify, \
2349 .set_tim = mac80211_hwsim_set_tim, \
2350 .conf_tx = mac80211_hwsim_conf_tx, \
2351 .get_survey = mac80211_hwsim_get_survey, \
2352 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2353 .ampdu_action = mac80211_hwsim_ampdu_action, \
2354 .flush = mac80211_hwsim_flush, \
2355 .get_tsf = mac80211_hwsim_get_tsf, \
2356 .set_tsf = mac80211_hwsim_set_tsf, \
2357 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2358 .get_et_stats = mac80211_hwsim_get_et_stats, \
2359 .get_et_strings = mac80211_hwsim_get_et_strings,
2360
2361static const struct ieee80211_ops mac80211_hwsim_ops = {
2362 HWSIM_COMMON_OPS
2363 .sw_scan_start = mac80211_hwsim_sw_scan,
2364 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2365};
2366
2367static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2368 HWSIM_COMMON_OPS
2369 .hw_scan = mac80211_hwsim_hw_scan,
2370 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2371 .sw_scan_start = NULL,
2372 .sw_scan_complete = NULL,
2373 .remain_on_channel = mac80211_hwsim_roc,
2374 .cancel_remain_on_channel = mac80211_hwsim_croc,
2375 .add_chanctx = mac80211_hwsim_add_chanctx,
2376 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2377 .change_chanctx = mac80211_hwsim_change_chanctx,
2378 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2379 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2380};
2381
2382struct hwsim_new_radio_params {
2383 unsigned int channels;
2384 const char *reg_alpha2;
2385 const struct ieee80211_regdomain *regd;
2386 bool reg_strict;
2387 bool p2p_device;
2388 bool use_chanctx;
2389 bool destroy_on_close;
2390 const char *hwname;
2391 bool no_vif;
2392 const u8 *perm_addr;
2393 u32 iftypes;
2394 u32 *ciphers;
2395 u8 n_ciphers;
2396};
2397
2398static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2399 struct genl_info *info)
2400{
2401 if (info)
2402 genl_notify(&hwsim_genl_family, mcast_skb, info,
2403 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2404 else
2405 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2406 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2407}
2408
2409static int append_radio_msg(struct sk_buff *skb, int id,
2410 struct hwsim_new_radio_params *param)
2411{
2412 int ret;
2413
2414 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2415 if (ret < 0)
2416 return ret;
2417
2418 if (param->channels) {
2419 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2420 if (ret < 0)
2421 return ret;
2422 }
2423
2424 if (param->reg_alpha2) {
2425 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2426 param->reg_alpha2);
2427 if (ret < 0)
2428 return ret;
2429 }
2430
2431 if (param->regd) {
2432 int i;
2433
2434 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2435 if (hwsim_world_regdom_custom[i] != param->regd)
2436 continue;
2437
2438 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2439 if (ret < 0)
2440 return ret;
2441 break;
2442 }
2443 }
2444
2445 if (param->reg_strict) {
2446 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2447 if (ret < 0)
2448 return ret;
2449 }
2450
2451 if (param->p2p_device) {
2452 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2453 if (ret < 0)
2454 return ret;
2455 }
2456
2457 if (param->use_chanctx) {
2458 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2459 if (ret < 0)
2460 return ret;
2461 }
2462
2463 if (param->hwname) {
2464 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2465 strlen(param->hwname), param->hwname);
2466 if (ret < 0)
2467 return ret;
2468 }
2469
2470 return 0;
2471}
2472
2473static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2474 struct hwsim_new_radio_params *param)
2475{
2476 struct sk_buff *mcast_skb;
2477 void *data;
2478
2479 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2480 if (!mcast_skb)
2481 return;
2482
2483 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2484 HWSIM_CMD_NEW_RADIO);
2485 if (!data)
2486 goto out_err;
2487
2488 if (append_radio_msg(mcast_skb, id, param) < 0)
2489 goto out_err;
2490
2491 genlmsg_end(mcast_skb, data);
2492
2493 hwsim_mcast_config_msg(mcast_skb, info);
2494 return;
2495
2496out_err:
2497 nlmsg_free(mcast_skb);
2498}
2499
2500static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2501 {
2502 /* TODO: should we support other types, e.g., P2P?*/
2503 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2504 BIT(NL80211_IFTYPE_AP),
2505 .he_cap = {
2506 .has_he = true,
2507 .he_cap_elem = {
2508 .mac_cap_info[0] =
2509 IEEE80211_HE_MAC_CAP0_HTC_HE,
2510 .mac_cap_info[1] =
2511 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2512 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2513 .mac_cap_info[2] =
2514 IEEE80211_HE_MAC_CAP2_BSR |
2515 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2516 IEEE80211_HE_MAC_CAP2_ACK_EN,
2517 .mac_cap_info[3] =
2518 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2519 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2520 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2521 .phy_cap_info[1] =
2522 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2523 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2524 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2525 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2526 .phy_cap_info[2] =
2527 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2528 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2529 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2530 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2531 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2532
2533 /* Leave all the other PHY capability bytes
2534 * unset, as DCM, beam forming, RU and PPE
2535 * threshold information are not supported
2536 */
2537 },
2538 .he_mcs_nss_supp = {
2539 .rx_mcs_80 = cpu_to_le16(0xfffa),
2540 .tx_mcs_80 = cpu_to_le16(0xfffa),
2541 .rx_mcs_160 = cpu_to_le16(0xffff),
2542 .tx_mcs_160 = cpu_to_le16(0xffff),
2543 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2544 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2545 },
2546 },
2547 },
2548#ifdef CONFIG_MAC80211_MESH
2549 {
2550 /* TODO: should we support other types, e.g., IBSS?*/
2551 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2552 .he_cap = {
2553 .has_he = true,
2554 .he_cap_elem = {
2555 .mac_cap_info[0] =
2556 IEEE80211_HE_MAC_CAP0_HTC_HE,
2557 .mac_cap_info[1] =
2558 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2559 .mac_cap_info[2] =
2560 IEEE80211_HE_MAC_CAP2_ACK_EN,
2561 .mac_cap_info[3] =
2562 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2563 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2564 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2565 .phy_cap_info[1] =
2566 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2567 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2568 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2569 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2570 .phy_cap_info[2] = 0,
2571
2572 /* Leave all the other PHY capability bytes
2573 * unset, as DCM, beam forming, RU and PPE
2574 * threshold information are not supported
2575 */
2576 },
2577 .he_mcs_nss_supp = {
2578 .rx_mcs_80 = cpu_to_le16(0xfffa),
2579 .tx_mcs_80 = cpu_to_le16(0xfffa),
2580 .rx_mcs_160 = cpu_to_le16(0xffff),
2581 .tx_mcs_160 = cpu_to_le16(0xffff),
2582 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2583 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2584 },
2585 },
2586 },
2587#endif
2588};
2589
2590static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2591 {
2592 /* TODO: should we support other types, e.g., P2P?*/
2593 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2594 BIT(NL80211_IFTYPE_AP),
2595 .he_cap = {
2596 .has_he = true,
2597 .he_cap_elem = {
2598 .mac_cap_info[0] =
2599 IEEE80211_HE_MAC_CAP0_HTC_HE,
2600 .mac_cap_info[1] =
2601 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2602 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2603 .mac_cap_info[2] =
2604 IEEE80211_HE_MAC_CAP2_BSR |
2605 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2606 IEEE80211_HE_MAC_CAP2_ACK_EN,
2607 .mac_cap_info[3] =
2608 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2609 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2610 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2611 .phy_cap_info[0] =
2612 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2613 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2614 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2615 .phy_cap_info[1] =
2616 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2617 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2618 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2619 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2620 .phy_cap_info[2] =
2621 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2622 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2623 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2624 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2625 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2626
2627 /* Leave all the other PHY capability bytes
2628 * unset, as DCM, beam forming, RU and PPE
2629 * threshold information are not supported
2630 */
2631 },
2632 .he_mcs_nss_supp = {
2633 .rx_mcs_80 = cpu_to_le16(0xfffa),
2634 .tx_mcs_80 = cpu_to_le16(0xfffa),
2635 .rx_mcs_160 = cpu_to_le16(0xfffa),
2636 .tx_mcs_160 = cpu_to_le16(0xfffa),
2637 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2638 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2639 },
2640 },
2641 },
2642#ifdef CONFIG_MAC80211_MESH
2643 {
2644 /* TODO: should we support other types, e.g., IBSS?*/
2645 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2646 .he_cap = {
2647 .has_he = true,
2648 .he_cap_elem = {
2649 .mac_cap_info[0] =
2650 IEEE80211_HE_MAC_CAP0_HTC_HE,
2651 .mac_cap_info[1] =
2652 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2653 .mac_cap_info[2] =
2654 IEEE80211_HE_MAC_CAP2_ACK_EN,
2655 .mac_cap_info[3] =
2656 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2657 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2658 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2659 .phy_cap_info[0] =
2660 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2661 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2662 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2663 .phy_cap_info[1] =
2664 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2665 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2666 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2667 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2668 .phy_cap_info[2] = 0,
2669
2670 /* Leave all the other PHY capability bytes
2671 * unset, as DCM, beam forming, RU and PPE
2672 * threshold information are not supported
2673 */
2674 },
2675 .he_mcs_nss_supp = {
2676 .rx_mcs_80 = cpu_to_le16(0xfffa),
2677 .tx_mcs_80 = cpu_to_le16(0xfffa),
2678 .rx_mcs_160 = cpu_to_le16(0xfffa),
2679 .tx_mcs_160 = cpu_to_le16(0xfffa),
2680 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2681 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2682 },
2683 },
2684 },
2685#endif
2686};
2687
2688static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2689{
2690 u16 n_iftype_data;
2691
2692 if (sband->band == NL80211_BAND_2GHZ) {
2693 n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2694 sband->iftype_data =
2695 (struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2696 } else if (sband->band == NL80211_BAND_5GHZ) {
2697 n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
2698 sband->iftype_data =
2699 (struct ieee80211_sband_iftype_data *)he_capa_5ghz;
2700 } else {
2701 return;
2702 }
2703
2704 sband->n_iftype_data = n_iftype_data;
2705}
2706
2707#ifdef CONFIG_MAC80211_MESH
2708#define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2709#else
2710#define HWSIM_MESH_BIT 0
2711#endif
2712
2713#define HWSIM_DEFAULT_IF_LIMIT \
2714 (BIT(NL80211_IFTYPE_STATION) | \
2715 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2716 BIT(NL80211_IFTYPE_AP) | \
2717 BIT(NL80211_IFTYPE_P2P_GO) | \
2718 HWSIM_MESH_BIT)
2719
2720#define HWSIM_IFTYPE_SUPPORT_MASK \
2721 (BIT(NL80211_IFTYPE_STATION) | \
2722 BIT(NL80211_IFTYPE_AP) | \
2723 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2724 BIT(NL80211_IFTYPE_P2P_GO) | \
2725 BIT(NL80211_IFTYPE_ADHOC) | \
2726 BIT(NL80211_IFTYPE_MESH_POINT))
2727
2728static int mac80211_hwsim_new_radio(struct genl_info *info,
2729 struct hwsim_new_radio_params *param)
2730{
2731 int err;
2732 u8 addr[ETH_ALEN];
2733 struct mac80211_hwsim_data *data;
2734 struct ieee80211_hw *hw;
2735 enum nl80211_band band;
2736 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2737 struct net *net;
2738 int idx, i;
2739 int n_limits = 0;
2740
2741 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2742 return -EINVAL;
2743
2744 spin_lock_bh(&hwsim_radio_lock);
2745 idx = hwsim_radio_idx++;
2746 spin_unlock_bh(&hwsim_radio_lock);
2747
2748 if (param->use_chanctx)
2749 ops = &mac80211_hwsim_mchan_ops;
2750 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2751 if (!hw) {
2752 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2753 err = -ENOMEM;
2754 goto failed;
2755 }
2756
2757 /* ieee80211_alloc_hw_nm may have used a default name */
2758 param->hwname = wiphy_name(hw->wiphy);
2759
2760 if (info)
2761 net = genl_info_net(info);
2762 else
2763 net = &init_net;
2764 wiphy_net_set(hw->wiphy, net);
2765
2766 data = hw->priv;
2767 data->hw = hw;
2768
2769 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2770 if (IS_ERR(data->dev)) {
2771 printk(KERN_DEBUG
2772 "mac80211_hwsim: device_create failed (%ld)\n",
2773 PTR_ERR(data->dev));
2774 err = -ENOMEM;
2775 goto failed_drvdata;
2776 }
2777 data->dev->driver = &mac80211_hwsim_driver.driver;
2778 err = device_bind_driver(data->dev);
2779 if (err != 0) {
2780 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2781 err);
2782 goto failed_bind;
2783 }
2784
2785 skb_queue_head_init(&data->pending);
2786
2787 SET_IEEE80211_DEV(hw, data->dev);
2788 if (!param->perm_addr) {
2789 eth_zero_addr(addr);
2790 addr[0] = 0x02;
2791 addr[3] = idx >> 8;
2792 addr[4] = idx;
2793 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2794 /* Why need here second address ? */
2795 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2796 data->addresses[1].addr[0] |= 0x40;
2797 hw->wiphy->n_addresses = 2;
2798 hw->wiphy->addresses = data->addresses;
2799 /* possible address clash is checked at hash table insertion */
2800 } else {
2801 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
2802 /* compatibility with automatically generated mac addr */
2803 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
2804 hw->wiphy->n_addresses = 2;
2805 hw->wiphy->addresses = data->addresses;
2806 }
2807
2808 data->channels = param->channels;
2809 data->use_chanctx = param->use_chanctx;
2810 data->idx = idx;
2811 data->destroy_on_close = param->destroy_on_close;
2812 if (info)
2813 data->portid = info->snd_portid;
2814
2815 /* setup interface limits, only on interface types we support */
2816 if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
2817 data->if_limits[n_limits].max = 1;
2818 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
2819 n_limits++;
2820 }
2821
2822 if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
2823 data->if_limits[n_limits].max = 2048;
2824 /*
2825 * For this case, we may only support a subset of
2826 * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
2827 * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
2828 */
2829 data->if_limits[n_limits].types =
2830 HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
2831 n_limits++;
2832 }
2833
2834 if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
2835 data->if_limits[n_limits].max = 1;
2836 data->if_limits[n_limits].types =
2837 BIT(NL80211_IFTYPE_P2P_DEVICE);
2838 n_limits++;
2839 }
2840
2841 if (data->use_chanctx) {
2842 hw->wiphy->max_scan_ssids = 255;
2843 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2844 hw->wiphy->max_remain_on_channel_duration = 1000;
2845 data->if_combination.radar_detect_widths = 0;
2846 data->if_combination.num_different_channels = data->channels;
2847 } else {
2848 data->if_combination.num_different_channels = 1;
2849 data->if_combination.radar_detect_widths =
2850 BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2851 BIT(NL80211_CHAN_WIDTH_20) |
2852 BIT(NL80211_CHAN_WIDTH_40) |
2853 BIT(NL80211_CHAN_WIDTH_80) |
2854 BIT(NL80211_CHAN_WIDTH_160);
2855 }
2856
2857 if (!n_limits) {
2858 err = -EINVAL;
2859 goto failed_hw;
2860 }
2861
2862 data->if_combination.max_interfaces = 0;
2863 for (i = 0; i < n_limits; i++)
2864 data->if_combination.max_interfaces +=
2865 data->if_limits[i].max;
2866
2867 data->if_combination.n_limits = n_limits;
2868 data->if_combination.limits = data->if_limits;
2869
2870 /*
2871 * If we actually were asked to support combinations,
2872 * advertise them - if there's only a single thing like
2873 * only IBSS then don't advertise it as combinations.
2874 */
2875 if (data->if_combination.max_interfaces > 1) {
2876 hw->wiphy->iface_combinations = &data->if_combination;
2877 hw->wiphy->n_iface_combinations = 1;
2878 }
2879
2880 if (param->ciphers) {
2881 memcpy(data->ciphers, param->ciphers,
2882 param->n_ciphers * sizeof(u32));
2883 hw->wiphy->cipher_suites = data->ciphers;
2884 hw->wiphy->n_cipher_suites = param->n_ciphers;
2885 }
2886
2887 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2888 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2889 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2890
2891 hw->queues = 5;
2892 hw->offchannel_tx_hw_queue = 4;
2893
2894 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2895 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2896 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2897 ieee80211_hw_set(hw, QUEUE_CONTROL);
2898 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2899 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2900 ieee80211_hw_set(hw, MFP_CAPABLE);
2901 ieee80211_hw_set(hw, SIGNAL_DBM);
2902 ieee80211_hw_set(hw, SUPPORTS_PS);
2903 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2904 if (rctbl)
2905 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2906 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
2907
2908 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2909 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2910 WIPHY_FLAG_AP_UAPSD |
2911 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2912 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2913 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2914 NL80211_FEATURE_STATIC_SMPS |
2915 NL80211_FEATURE_DYNAMIC_SMPS |
2916 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2917 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2918
2919 hw->wiphy->interface_modes = param->iftypes;
2920
2921 /* ask mac80211 to reserve space for magic */
2922 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2923 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2924 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2925
2926 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2927 sizeof(hwsim_channels_2ghz));
2928 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2929 sizeof(hwsim_channels_5ghz));
2930 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2931
2932 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2933 struct ieee80211_supported_band *sband = &data->bands[band];
2934
2935 sband->band = band;
2936
2937 switch (band) {
2938 case NL80211_BAND_2GHZ:
2939 sband->channels = data->channels_2ghz;
2940 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2941 sband->bitrates = data->rates;
2942 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2943 break;
2944 case NL80211_BAND_5GHZ:
2945 sband->channels = data->channels_5ghz;
2946 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2947 sband->bitrates = data->rates + 4;
2948 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2949
2950 sband->vht_cap.vht_supported = true;
2951 sband->vht_cap.cap =
2952 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2953 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2954 IEEE80211_VHT_CAP_RXLDPC |
2955 IEEE80211_VHT_CAP_SHORT_GI_80 |
2956 IEEE80211_VHT_CAP_SHORT_GI_160 |
2957 IEEE80211_VHT_CAP_TXSTBC |
2958 IEEE80211_VHT_CAP_RXSTBC_4 |
2959 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2960 sband->vht_cap.vht_mcs.rx_mcs_map =
2961 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2962 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2963 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2964 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2965 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2966 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2967 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2968 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2969 sband->vht_cap.vht_mcs.tx_mcs_map =
2970 sband->vht_cap.vht_mcs.rx_mcs_map;
2971 break;
2972 default:
2973 continue;
2974 }
2975
2976 sband->ht_cap.ht_supported = true;
2977 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2978 IEEE80211_HT_CAP_GRN_FLD |
2979 IEEE80211_HT_CAP_SGI_20 |
2980 IEEE80211_HT_CAP_SGI_40 |
2981 IEEE80211_HT_CAP_DSSSCCK40;
2982 sband->ht_cap.ampdu_factor = 0x3;
2983 sband->ht_cap.ampdu_density = 0x6;
2984 memset(&sband->ht_cap.mcs, 0,
2985 sizeof(sband->ht_cap.mcs));
2986 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2987 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2988 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2989
2990 mac80211_hwsim_he_capab(sband);
2991
2992 hw->wiphy->bands[band] = sband;
2993 }
2994
2995 /* By default all radios belong to the first group */
2996 data->group = 1;
2997 mutex_init(&data->mutex);
2998
2999 data->netgroup = hwsim_net_get_netgroup(net);
3000 data->wmediumd = hwsim_net_get_wmediumd(net);
3001
3002 /* Enable frame retransmissions for lossy channels */
3003 hw->max_rates = 4;
3004 hw->max_rate_tries = 11;
3005
3006 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3007 hw->wiphy->n_vendor_commands =
3008 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3009 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3010 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3011
3012 if (param->reg_strict)
3013 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3014 if (param->regd) {
3015 data->regd = param->regd;
3016 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3017 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3018 /* give the regulatory workqueue a chance to run */
3019 schedule_timeout_interruptible(1);
3020 }
3021
3022 if (param->no_vif)
3023 ieee80211_hw_set(hw, NO_AUTO_VIF);
3024
3025 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3026
3027 hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3028 HRTIMER_MODE_ABS_SOFT);
3029 data->beacon_timer.function = mac80211_hwsim_beacon;
3030
3031 err = ieee80211_register_hw(hw);
3032 if (err < 0) {
3033 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3034 err);
3035 goto failed_hw;
3036 }
3037
3038 wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3039
3040 if (param->reg_alpha2) {
3041 data->alpha2[0] = param->reg_alpha2[0];
3042 data->alpha2[1] = param->reg_alpha2[1];
3043 regulatory_hint(hw->wiphy, param->reg_alpha2);
3044 }
3045
3046 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3047 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3048 debugfs_create_file("group", 0666, data->debugfs, data,
3049 &hwsim_fops_group);
3050 if (!data->use_chanctx)
3051 debugfs_create_file("dfs_simulate_radar", 0222,
3052 data->debugfs,
3053 data, &hwsim_simulate_radar);
3054
3055 spin_lock_bh(&hwsim_radio_lock);
3056 err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3057 hwsim_rht_params);
3058 if (err < 0) {
3059 if (info) {
3060 GENL_SET_ERR_MSG(info, "perm addr already present");
3061 NL_SET_BAD_ATTR(info->extack,
3062 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3063 }
3064 spin_unlock_bh(&hwsim_radio_lock);
3065 goto failed_final_insert;
3066 }
3067
3068 list_add_tail(&data->list, &hwsim_radios);
3069 hwsim_radios_generation++;
3070 spin_unlock_bh(&hwsim_radio_lock);
3071
3072 hwsim_mcast_new_radio(idx, info, param);
3073
3074 return idx;
3075
3076failed_final_insert:
3077 debugfs_remove_recursive(data->debugfs);
3078 ieee80211_unregister_hw(data->hw);
3079failed_hw:
3080 device_release_driver(data->dev);
3081failed_bind:
3082 device_unregister(data->dev);
3083failed_drvdata:
3084 ieee80211_free_hw(hw);
3085failed:
3086 return err;
3087}
3088
3089static void hwsim_mcast_del_radio(int id, const char *hwname,
3090 struct genl_info *info)
3091{
3092 struct sk_buff *skb;
3093 void *data;
3094 int ret;
3095
3096 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3097 if (!skb)
3098 return;
3099
3100 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3101 HWSIM_CMD_DEL_RADIO);
3102 if (!data)
3103 goto error;
3104
3105 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3106 if (ret < 0)
3107 goto error;
3108
3109 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3110 hwname);
3111 if (ret < 0)
3112 goto error;
3113
3114 genlmsg_end(skb, data);
3115
3116 hwsim_mcast_config_msg(skb, info);
3117
3118 return;
3119
3120error:
3121 nlmsg_free(skb);
3122}
3123
3124static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3125 const char *hwname,
3126 struct genl_info *info)
3127{
3128 hwsim_mcast_del_radio(data->idx, hwname, info);
3129 debugfs_remove_recursive(data->debugfs);
3130 ieee80211_unregister_hw(data->hw);
3131 device_release_driver(data->dev);
3132 device_unregister(data->dev);
3133 ieee80211_free_hw(data->hw);
3134}
3135
3136static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3137 struct mac80211_hwsim_data *data,
3138 u32 portid, u32 seq,
3139 struct netlink_callback *cb, int flags)
3140{
3141 void *hdr;
3142 struct hwsim_new_radio_params param = { };
3143 int res = -EMSGSIZE;
3144
3145 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3146 HWSIM_CMD_GET_RADIO);
3147 if (!hdr)
3148 return -EMSGSIZE;
3149
3150 if (cb)
3151 genl_dump_check_consistent(cb, hdr);
3152
3153 if (data->alpha2[0] && data->alpha2[1])
3154 param.reg_alpha2 = data->alpha2;
3155
3156 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3157 REGULATORY_STRICT_REG);
3158 param.p2p_device = !!(data->hw->wiphy->interface_modes &
3159 BIT(NL80211_IFTYPE_P2P_DEVICE));
3160 param.use_chanctx = data->use_chanctx;
3161 param.regd = data->regd;
3162 param.channels = data->channels;
3163 param.hwname = wiphy_name(data->hw->wiphy);
3164
3165 res = append_radio_msg(skb, data->idx, ¶m);
3166 if (res < 0)
3167 goto out_err;
3168
3169 genlmsg_end(skb, hdr);
3170 return 0;
3171
3172out_err:
3173 genlmsg_cancel(skb, hdr);
3174 return res;
3175}
3176
3177static void mac80211_hwsim_free(void)
3178{
3179 struct mac80211_hwsim_data *data;
3180
3181 spin_lock_bh(&hwsim_radio_lock);
3182 while ((data = list_first_entry_or_null(&hwsim_radios,
3183 struct mac80211_hwsim_data,
3184 list))) {
3185 list_del(&data->list);
3186 spin_unlock_bh(&hwsim_radio_lock);
3187 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3188 NULL);
3189 spin_lock_bh(&hwsim_radio_lock);
3190 }
3191 spin_unlock_bh(&hwsim_radio_lock);
3192 class_destroy(hwsim_class);
3193}
3194
3195static const struct net_device_ops hwsim_netdev_ops = {
3196 .ndo_start_xmit = hwsim_mon_xmit,
3197 .ndo_set_mac_address = eth_mac_addr,
3198 .ndo_validate_addr = eth_validate_addr,
3199};
3200
3201static void hwsim_mon_setup(struct net_device *dev)
3202{
3203 dev->netdev_ops = &hwsim_netdev_ops;
3204 dev->needs_free_netdev = true;
3205 ether_setup(dev);
3206 dev->priv_flags |= IFF_NO_QUEUE;
3207 dev->type = ARPHRD_IEEE80211_RADIOTAP;
3208 eth_zero_addr(dev->dev_addr);
3209 dev->dev_addr[0] = 0x12;
3210}
3211
3212static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3213{
3214 return rhashtable_lookup_fast(&hwsim_radios_rht,
3215 addr,
3216 hwsim_rht_params);
3217}
3218
3219static void hwsim_register_wmediumd(struct net *net, u32 portid)
3220{
3221 struct mac80211_hwsim_data *data;
3222
3223 hwsim_net_set_wmediumd(net, portid);
3224
3225 spin_lock_bh(&hwsim_radio_lock);
3226 list_for_each_entry(data, &hwsim_radios, list) {
3227 if (data->netgroup == hwsim_net_get_netgroup(net))
3228 data->wmediumd = portid;
3229 }
3230 spin_unlock_bh(&hwsim_radio_lock);
3231}
3232
3233static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3234 struct genl_info *info)
3235{
3236
3237 struct ieee80211_hdr *hdr;
3238 struct mac80211_hwsim_data *data2;
3239 struct ieee80211_tx_info *txi;
3240 struct hwsim_tx_rate *tx_attempts;
3241 u64 ret_skb_cookie;
3242 struct sk_buff *skb, *tmp;
3243 const u8 *src;
3244 unsigned int hwsim_flags;
3245 int i;
3246 bool found = false;
3247
3248 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3249 !info->attrs[HWSIM_ATTR_FLAGS] ||
3250 !info->attrs[HWSIM_ATTR_COOKIE] ||
3251 !info->attrs[HWSIM_ATTR_SIGNAL] ||
3252 !info->attrs[HWSIM_ATTR_TX_INFO])
3253 goto out;
3254
3255 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3256 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3257 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3258
3259 data2 = get_hwsim_data_ref_from_addr(src);
3260 if (!data2)
3261 goto out;
3262
3263 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3264 goto out;
3265
3266 if (info->snd_portid != data2->wmediumd)
3267 goto out;
3268
3269 /* look for the skb matching the cookie passed back from user */
3270 skb_queue_walk_safe(&data2->pending, skb, tmp) {
3271 u64 skb_cookie;
3272
3273 txi = IEEE80211_SKB_CB(skb);
3274 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3275
3276 if (skb_cookie == ret_skb_cookie) {
3277 skb_unlink(skb, &data2->pending);
3278 found = true;
3279 break;
3280 }
3281 }
3282
3283 /* not found */
3284 if (!found)
3285 goto out;
3286
3287 /* Tx info received because the frame was broadcasted on user space,
3288 so we get all the necessary info: tx attempts and skb control buff */
3289
3290 tx_attempts = (struct hwsim_tx_rate *)nla_data(
3291 info->attrs[HWSIM_ATTR_TX_INFO]);
3292
3293 /* now send back TX status */
3294 txi = IEEE80211_SKB_CB(skb);
3295
3296 ieee80211_tx_info_clear_status(txi);
3297
3298 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3299 txi->status.rates[i].idx = tx_attempts[i].idx;
3300 txi->status.rates[i].count = tx_attempts[i].count;
3301 }
3302
3303 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3304
3305 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3306 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3307 if (skb->len >= 16) {
3308 hdr = (struct ieee80211_hdr *) skb->data;
3309 mac80211_hwsim_monitor_ack(data2->channel,
3310 hdr->addr2);
3311 }
3312 txi->flags |= IEEE80211_TX_STAT_ACK;
3313 }
3314 ieee80211_tx_status_irqsafe(data2->hw, skb);
3315 return 0;
3316out:
3317 return -EINVAL;
3318
3319}
3320
3321static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3322 struct genl_info *info)
3323{
3324 struct mac80211_hwsim_data *data2;
3325 struct ieee80211_rx_status rx_status;
3326 struct ieee80211_hdr *hdr;
3327 const u8 *dst;
3328 int frame_data_len;
3329 void *frame_data;
3330 struct sk_buff *skb = NULL;
3331
3332 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3333 !info->attrs[HWSIM_ATTR_FRAME] ||
3334 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3335 !info->attrs[HWSIM_ATTR_SIGNAL])
3336 goto out;
3337
3338 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3339 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3340 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3341
3342 /* Allocate new skb here */
3343 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3344 if (skb == NULL)
3345 goto err;
3346
3347 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3348 goto err;
3349
3350 /* Copy the data */
3351 skb_put_data(skb, frame_data, frame_data_len);
3352
3353 data2 = get_hwsim_data_ref_from_addr(dst);
3354 if (!data2)
3355 goto out;
3356
3357 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3358 goto out;
3359
3360 if (info->snd_portid != data2->wmediumd)
3361 goto out;
3362
3363 /* check if radio is configured properly */
3364
3365 if (data2->idle || !data2->started)
3366 goto out;
3367
3368 /* A frame is received from user space */
3369 memset(&rx_status, 0, sizeof(rx_status));
3370 if (info->attrs[HWSIM_ATTR_FREQ]) {
3371 /* throw away off-channel packets, but allow both the temporary
3372 * ("hw" scan/remain-on-channel) and regular channel, since the
3373 * internal datapath also allows this
3374 */
3375 mutex_lock(&data2->mutex);
3376 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3377
3378 if (rx_status.freq != data2->channel->center_freq &&
3379 (!data2->tmp_chan ||
3380 rx_status.freq != data2->tmp_chan->center_freq)) {
3381 mutex_unlock(&data2->mutex);
3382 goto out;
3383 }
3384 mutex_unlock(&data2->mutex);
3385 } else {
3386 rx_status.freq = data2->channel->center_freq;
3387 }
3388
3389 rx_status.band = data2->channel->band;
3390 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3391 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3392
3393 hdr = (void *)skb->data;
3394
3395 if (ieee80211_is_beacon(hdr->frame_control) ||
3396 ieee80211_is_probe_resp(hdr->frame_control))
3397 rx_status.boottime_ns = ktime_get_boottime_ns();
3398
3399 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3400 data2->rx_pkts++;
3401 data2->rx_bytes += skb->len;
3402 ieee80211_rx_irqsafe(data2->hw, skb);
3403
3404 return 0;
3405err:
3406 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3407out:
3408 dev_kfree_skb(skb);
3409 return -EINVAL;
3410}
3411
3412static int hwsim_register_received_nl(struct sk_buff *skb_2,
3413 struct genl_info *info)
3414{
3415 struct net *net = genl_info_net(info);
3416 struct mac80211_hwsim_data *data;
3417 int chans = 1;
3418
3419 spin_lock_bh(&hwsim_radio_lock);
3420 list_for_each_entry(data, &hwsim_radios, list)
3421 chans = max(chans, data->channels);
3422 spin_unlock_bh(&hwsim_radio_lock);
3423
3424 /* In the future we should revise the userspace API and allow it
3425 * to set a flag that it does support multi-channel, then we can
3426 * let this pass conditionally on the flag.
3427 * For current userspace, prohibit it since it won't work right.
3428 */
3429 if (chans > 1)
3430 return -EOPNOTSUPP;
3431
3432 if (hwsim_net_get_wmediumd(net))
3433 return -EBUSY;
3434
3435 hwsim_register_wmediumd(net, info->snd_portid);
3436
3437 pr_debug("mac80211_hwsim: received a REGISTER, "
3438 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3439
3440 return 0;
3441}
3442
3443/* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3444static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3445{
3446 int i;
3447
3448 for (i = 0; i < n_ciphers; i++) {
3449 int j;
3450 int found = 0;
3451
3452 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3453 if (ciphers[i] == hwsim_ciphers[j]) {
3454 found = 1;
3455 break;
3456 }
3457 }
3458
3459 if (!found)
3460 return false;
3461 }
3462
3463 return true;
3464}
3465
3466static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3467{
3468 struct hwsim_new_radio_params param = { 0 };
3469 const char *hwname = NULL;
3470 int ret;
3471
3472 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3473 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3474 param.channels = channels;
3475 param.destroy_on_close =
3476 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3477
3478 if (info->attrs[HWSIM_ATTR_CHANNELS])
3479 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3480
3481 if (param.channels < 1) {
3482 GENL_SET_ERR_MSG(info, "must have at least one channel");
3483 return -EINVAL;
3484 }
3485
3486 if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3487 GENL_SET_ERR_MSG(info, "too many channels specified");
3488 return -EINVAL;
3489 }
3490
3491 if (info->attrs[HWSIM_ATTR_NO_VIF])
3492 param.no_vif = true;
3493
3494 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3495 param.use_chanctx = true;
3496 else
3497 param.use_chanctx = (param.channels > 1);
3498
3499 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3500 param.reg_alpha2 =
3501 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3502
3503 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3504 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3505
3506 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3507 return -EINVAL;
3508
3509 idx = array_index_nospec(idx,
3510 ARRAY_SIZE(hwsim_world_regdom_custom));
3511 param.regd = hwsim_world_regdom_custom[idx];
3512 }
3513
3514 if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3515 if (!is_valid_ether_addr(
3516 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3517 GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3518 NL_SET_BAD_ATTR(info->extack,
3519 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3520 return -EINVAL;
3521 }
3522
3523 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3524 }
3525
3526 if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3527 param.iftypes =
3528 nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3529
3530 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3531 NL_SET_ERR_MSG_ATTR(info->extack,
3532 info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3533 "cannot support more iftypes than kernel");
3534 return -EINVAL;
3535 }
3536 } else {
3537 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3538 }
3539
3540 /* ensure both flag and iftype support is honored */
3541 if (param.p2p_device ||
3542 param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3543 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3544 param.p2p_device = true;
3545 }
3546
3547 if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3548 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3549
3550 param.ciphers =
3551 nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3552
3553 if (len % sizeof(u32)) {
3554 NL_SET_ERR_MSG_ATTR(info->extack,
3555 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3556 "bad cipher list length");
3557 return -EINVAL;
3558 }
3559
3560 param.n_ciphers = len / sizeof(u32);
3561
3562 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3563 NL_SET_ERR_MSG_ATTR(info->extack,
3564 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3565 "too many ciphers specified");
3566 return -EINVAL;
3567 }
3568
3569 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3570 NL_SET_ERR_MSG_ATTR(info->extack,
3571 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3572 "unsupported ciphers specified");
3573 return -EINVAL;
3574 }
3575 }
3576
3577 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3578 hwname = kasprintf(GFP_KERNEL, "%.*s",
3579 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3580 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3581 if (!hwname)
3582 return -ENOMEM;
3583 param.hwname = hwname;
3584 }
3585
3586 ret = mac80211_hwsim_new_radio(info, ¶m);
3587 kfree(hwname);
3588 return ret;
3589}
3590
3591static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3592{
3593 struct mac80211_hwsim_data *data;
3594 s64 idx = -1;
3595 const char *hwname = NULL;
3596
3597 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3598 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3599 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3600 hwname = kasprintf(GFP_KERNEL, "%.*s",
3601 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3602 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3603 if (!hwname)
3604 return -ENOMEM;
3605 } else
3606 return -EINVAL;
3607
3608 spin_lock_bh(&hwsim_radio_lock);
3609 list_for_each_entry(data, &hwsim_radios, list) {
3610 if (idx >= 0) {
3611 if (data->idx != idx)
3612 continue;
3613 } else {
3614 if (!hwname ||
3615 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3616 continue;
3617 }
3618
3619 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3620 continue;
3621
3622 list_del(&data->list);
3623 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3624 hwsim_rht_params);
3625 hwsim_radios_generation++;
3626 spin_unlock_bh(&hwsim_radio_lock);
3627 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3628 info);
3629 kfree(hwname);
3630 return 0;
3631 }
3632 spin_unlock_bh(&hwsim_radio_lock);
3633
3634 kfree(hwname);
3635 return -ENODEV;
3636}
3637
3638static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3639{
3640 struct mac80211_hwsim_data *data;
3641 struct sk_buff *skb;
3642 int idx, res = -ENODEV;
3643
3644 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3645 return -EINVAL;
3646 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3647
3648 spin_lock_bh(&hwsim_radio_lock);
3649 list_for_each_entry(data, &hwsim_radios, list) {
3650 if (data->idx != idx)
3651 continue;
3652
3653 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3654 continue;
3655
3656 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3657 if (!skb) {
3658 res = -ENOMEM;
3659 goto out_err;
3660 }
3661
3662 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3663 info->snd_seq, NULL, 0);
3664 if (res < 0) {
3665 nlmsg_free(skb);
3666 goto out_err;
3667 }
3668
3669 res = genlmsg_reply(skb, info);
3670 break;
3671 }
3672
3673out_err:
3674 spin_unlock_bh(&hwsim_radio_lock);
3675
3676 return res;
3677}
3678
3679static int hwsim_dump_radio_nl(struct sk_buff *skb,
3680 struct netlink_callback *cb)
3681{
3682 int last_idx = cb->args[0] - 1;
3683 struct mac80211_hwsim_data *data = NULL;
3684 int res = 0;
3685 void *hdr;
3686
3687 spin_lock_bh(&hwsim_radio_lock);
3688 cb->seq = hwsim_radios_generation;
3689
3690 if (last_idx >= hwsim_radio_idx-1)
3691 goto done;
3692
3693 list_for_each_entry(data, &hwsim_radios, list) {
3694 if (data->idx <= last_idx)
3695 continue;
3696
3697 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3698 continue;
3699
3700 res = mac80211_hwsim_get_radio(skb, data,
3701 NETLINK_CB(cb->skb).portid,
3702 cb->nlh->nlmsg_seq, cb,
3703 NLM_F_MULTI);
3704 if (res < 0)
3705 break;
3706
3707 last_idx = data->idx;
3708 }
3709
3710 cb->args[0] = last_idx + 1;
3711
3712 /* list changed, but no new element sent, set interrupted flag */
3713 if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3714 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3715 cb->nlh->nlmsg_seq, &hwsim_genl_family,
3716 NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3717 if (hdr) {
3718 genl_dump_check_consistent(cb, hdr);
3719 genlmsg_end(skb, hdr);
3720 } else {
3721 res = -EMSGSIZE;
3722 }
3723 }
3724
3725done:
3726 spin_unlock_bh(&hwsim_radio_lock);
3727 return res ?: skb->len;
3728}
3729
3730/* Generic Netlink operations array */
3731static const struct genl_ops hwsim_ops[] = {
3732 {
3733 .cmd = HWSIM_CMD_REGISTER,
3734 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3735 .doit = hwsim_register_received_nl,
3736 .flags = GENL_UNS_ADMIN_PERM,
3737 },
3738 {
3739 .cmd = HWSIM_CMD_FRAME,
3740 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3741 .doit = hwsim_cloned_frame_received_nl,
3742 },
3743 {
3744 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3745 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3746 .doit = hwsim_tx_info_frame_received_nl,
3747 },
3748 {
3749 .cmd = HWSIM_CMD_NEW_RADIO,
3750 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3751 .doit = hwsim_new_radio_nl,
3752 .flags = GENL_UNS_ADMIN_PERM,
3753 },
3754 {
3755 .cmd = HWSIM_CMD_DEL_RADIO,
3756 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3757 .doit = hwsim_del_radio_nl,
3758 .flags = GENL_UNS_ADMIN_PERM,
3759 },
3760 {
3761 .cmd = HWSIM_CMD_GET_RADIO,
3762 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3763 .doit = hwsim_get_radio_nl,
3764 .dumpit = hwsim_dump_radio_nl,
3765 },
3766};
3767
3768static struct genl_family hwsim_genl_family __ro_after_init = {
3769 .name = "MAC80211_HWSIM",
3770 .version = 1,
3771 .maxattr = HWSIM_ATTR_MAX,
3772 .policy = hwsim_genl_policy,
3773 .netnsok = true,
3774 .module = THIS_MODULE,
3775 .ops = hwsim_ops,
3776 .n_ops = ARRAY_SIZE(hwsim_ops),
3777 .mcgrps = hwsim_mcgrps,
3778 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3779};
3780
3781static void remove_user_radios(u32 portid)
3782{
3783 struct mac80211_hwsim_data *entry, *tmp;
3784 LIST_HEAD(list);
3785
3786 spin_lock_bh(&hwsim_radio_lock);
3787 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3788 if (entry->destroy_on_close && entry->portid == portid) {
3789 list_move(&entry->list, &list);
3790 rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
3791 hwsim_rht_params);
3792 hwsim_radios_generation++;
3793 }
3794 }
3795 spin_unlock_bh(&hwsim_radio_lock);
3796
3797 list_for_each_entry_safe(entry, tmp, &list, list) {
3798 list_del(&entry->list);
3799 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
3800 NULL);
3801 }
3802}
3803
3804static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3805 unsigned long state,
3806 void *_notify)
3807{
3808 struct netlink_notify *notify = _notify;
3809
3810 if (state != NETLINK_URELEASE)
3811 return NOTIFY_DONE;
3812
3813 remove_user_radios(notify->portid);
3814
3815 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3816 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3817 " socket, switching to perfect channel medium\n");
3818 hwsim_register_wmediumd(notify->net, 0);
3819 }
3820 return NOTIFY_DONE;
3821
3822}
3823
3824static struct notifier_block hwsim_netlink_notifier = {
3825 .notifier_call = mac80211_hwsim_netlink_notify,
3826};
3827
3828static int __init hwsim_init_netlink(void)
3829{
3830 int rc;
3831
3832 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3833
3834 rc = genl_register_family(&hwsim_genl_family);
3835 if (rc)
3836 goto failure;
3837
3838 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3839 if (rc) {
3840 genl_unregister_family(&hwsim_genl_family);
3841 goto failure;
3842 }
3843
3844 return 0;
3845
3846failure:
3847 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3848 return -EINVAL;
3849}
3850
3851static __net_init int hwsim_init_net(struct net *net)
3852{
3853 return hwsim_net_set_netgroup(net);
3854}
3855
3856static void __net_exit hwsim_exit_net(struct net *net)
3857{
3858 struct mac80211_hwsim_data *data, *tmp;
3859 LIST_HEAD(list);
3860
3861 spin_lock_bh(&hwsim_radio_lock);
3862 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3863 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3864 continue;
3865
3866 /* Radios created in init_net are returned to init_net. */
3867 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3868 continue;
3869
3870 list_move(&data->list, &list);
3871 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3872 hwsim_rht_params);
3873 hwsim_radios_generation++;
3874 }
3875 spin_unlock_bh(&hwsim_radio_lock);
3876
3877 list_for_each_entry_safe(data, tmp, &list, list) {
3878 list_del(&data->list);
3879 mac80211_hwsim_del_radio(data,
3880 wiphy_name(data->hw->wiphy),
3881 NULL);
3882 }
3883
3884 ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
3885}
3886
3887static struct pernet_operations hwsim_net_ops = {
3888 .init = hwsim_init_net,
3889 .exit = hwsim_exit_net,
3890 .id = &hwsim_net_id,
3891 .size = sizeof(struct hwsim_net),
3892};
3893
3894static void hwsim_exit_netlink(void)
3895{
3896 /* unregister the notifier */
3897 netlink_unregister_notifier(&hwsim_netlink_notifier);
3898 /* unregister the family */
3899 genl_unregister_family(&hwsim_genl_family);
3900}
3901
3902static int __init init_mac80211_hwsim(void)
3903{
3904 int i, err;
3905
3906 if (radios < 0 || radios > 100)
3907 return -EINVAL;
3908
3909 if (channels < 1)
3910 return -EINVAL;
3911
3912 spin_lock_init(&hwsim_radio_lock);
3913
3914 err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
3915 if (err)
3916 return err;
3917
3918 err = register_pernet_device(&hwsim_net_ops);
3919 if (err)
3920 goto out_free_rht;
3921
3922 err = platform_driver_register(&mac80211_hwsim_driver);
3923 if (err)
3924 goto out_unregister_pernet;
3925
3926 err = hwsim_init_netlink();
3927 if (err)
3928 goto out_unregister_driver;
3929
3930 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3931 if (IS_ERR(hwsim_class)) {
3932 err = PTR_ERR(hwsim_class);
3933 goto out_exit_netlink;
3934 }
3935
3936 for (i = 0; i < radios; i++) {
3937 struct hwsim_new_radio_params param = { 0 };
3938
3939 param.channels = channels;
3940
3941 switch (regtest) {
3942 case HWSIM_REGTEST_DIFF_COUNTRY:
3943 if (i < ARRAY_SIZE(hwsim_alpha2s))
3944 param.reg_alpha2 = hwsim_alpha2s[i];
3945 break;
3946 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3947 if (!i)
3948 param.reg_alpha2 = hwsim_alpha2s[0];
3949 break;
3950 case HWSIM_REGTEST_STRICT_ALL:
3951 param.reg_strict = true;
3952 /* fall through */
3953 case HWSIM_REGTEST_DRIVER_REG_ALL:
3954 param.reg_alpha2 = hwsim_alpha2s[0];
3955 break;
3956 case HWSIM_REGTEST_WORLD_ROAM:
3957 if (i == 0)
3958 param.regd = &hwsim_world_regdom_custom_01;
3959 break;
3960 case HWSIM_REGTEST_CUSTOM_WORLD:
3961 param.regd = &hwsim_world_regdom_custom_01;
3962 break;
3963 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3964 if (i == 0)
3965 param.regd = &hwsim_world_regdom_custom_01;
3966 else if (i == 1)
3967 param.regd = &hwsim_world_regdom_custom_02;
3968 break;
3969 case HWSIM_REGTEST_STRICT_FOLLOW:
3970 if (i == 0) {
3971 param.reg_strict = true;
3972 param.reg_alpha2 = hwsim_alpha2s[0];
3973 }
3974 break;
3975 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3976 if (i == 0) {
3977 param.reg_strict = true;
3978 param.reg_alpha2 = hwsim_alpha2s[0];
3979 } else if (i == 1) {
3980 param.reg_alpha2 = hwsim_alpha2s[1];
3981 }
3982 break;
3983 case HWSIM_REGTEST_ALL:
3984 switch (i) {
3985 case 0:
3986 param.regd = &hwsim_world_regdom_custom_01;
3987 break;
3988 case 1:
3989 param.regd = &hwsim_world_regdom_custom_02;
3990 break;
3991 case 2:
3992 param.reg_alpha2 = hwsim_alpha2s[0];
3993 break;
3994 case 3:
3995 param.reg_alpha2 = hwsim_alpha2s[1];
3996 break;
3997 case 4:
3998 param.reg_strict = true;
3999 param.reg_alpha2 = hwsim_alpha2s[2];
4000 break;
4001 }
4002 break;
4003 default:
4004 break;
4005 }
4006
4007 param.p2p_device = support_p2p_device;
4008 param.use_chanctx = channels > 1;
4009 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4010 if (param.p2p_device)
4011 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4012
4013 err = mac80211_hwsim_new_radio(NULL, ¶m);
4014 if (err < 0)
4015 goto out_free_radios;
4016 }
4017
4018 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4019 hwsim_mon_setup);
4020 if (hwsim_mon == NULL) {
4021 err = -ENOMEM;
4022 goto out_free_radios;
4023 }
4024
4025 rtnl_lock();
4026 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4027 if (err < 0) {
4028 rtnl_unlock();
4029 goto out_free_mon;
4030 }
4031
4032 err = register_netdevice(hwsim_mon);
4033 if (err < 0) {
4034 rtnl_unlock();
4035 goto out_free_mon;
4036 }
4037 rtnl_unlock();
4038
4039 return 0;
4040
4041out_free_mon:
4042 free_netdev(hwsim_mon);
4043out_free_radios:
4044 mac80211_hwsim_free();
4045out_exit_netlink:
4046 hwsim_exit_netlink();
4047out_unregister_driver:
4048 platform_driver_unregister(&mac80211_hwsim_driver);
4049out_unregister_pernet:
4050 unregister_pernet_device(&hwsim_net_ops);
4051out_free_rht:
4052 rhashtable_destroy(&hwsim_radios_rht);
4053 return err;
4054}
4055module_init(init_mac80211_hwsim);
4056
4057static void __exit exit_mac80211_hwsim(void)
4058{
4059 pr_debug("mac80211_hwsim: unregister radios\n");
4060
4061 hwsim_exit_netlink();
4062
4063 mac80211_hwsim_free();
4064
4065 rhashtable_destroy(&hwsim_radios_rht);
4066 unregister_netdev(hwsim_mon);
4067 platform_driver_unregister(&mac80211_hwsim_driver);
4068 unregister_pernet_device(&hwsim_net_ops);
4069}
4070module_exit(exit_mac80211_hwsim);