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mac80211_hwsim: Update timestamp in Probe Response frames
[deliverable/linux.git] / drivers / net / wireless / mac80211_hwsim.c
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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 struct sk_buff_head pending; /* packets pending */
521 /*
522 * Only radios in the same group can communicate together (the
523 * channel has to match too). Each bit represents a group. A
524 * radio can be in more than one group.
525 */
526 u64 group;
527
528 int power_level;
529
530 /* difference between this hw's clock and the real clock, in usecs */
531 s64 tsf_offset;
532 s64 bcn_delta;
533 /* absolute beacon transmission time. Used to cover up "tx" delay. */
534 u64 abs_bcn_ts;
535
536 /* Stats */
537 u64 tx_pkts;
538 u64 rx_pkts;
539 u64 tx_bytes;
540 u64 rx_bytes;
541 u64 tx_dropped;
542 u64 tx_failed;
543};
544
545
546struct hwsim_radiotap_hdr {
547 struct ieee80211_radiotap_header hdr;
548 __le64 rt_tsft;
549 u8 rt_flags;
550 u8 rt_rate;
551 __le16 rt_channel;
552 __le16 rt_chbitmask;
553} __packed;
554
555struct hwsim_radiotap_ack_hdr {
556 struct ieee80211_radiotap_header hdr;
557 u8 rt_flags;
558 u8 pad;
559 __le16 rt_channel;
560 __le16 rt_chbitmask;
561} __packed;
562
563/* MAC80211_HWSIM netlinf family */
564static struct genl_family hwsim_genl_family = {
565 .id = GENL_ID_GENERATE,
566 .hdrsize = 0,
567 .name = "MAC80211_HWSIM",
568 .version = 1,
569 .maxattr = HWSIM_ATTR_MAX,
570};
571
572enum hwsim_multicast_groups {
573 HWSIM_MCGRP_CONFIG,
574};
575
576static const struct genl_multicast_group hwsim_mcgrps[] = {
577 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
578};
579
580/* MAC80211_HWSIM netlink policy */
581
582static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
583 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
584 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
585 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
586 .len = IEEE80211_MAX_DATA_LEN },
587 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
588 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
589 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
590 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
591 .len = IEEE80211_TX_MAX_RATES *
592 sizeof(struct hwsim_tx_rate)},
593 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
594 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
595 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
596 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
597 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
598 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
599 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
600 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
601 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
602 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
603 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
604};
605
606static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
607 struct sk_buff *skb,
608 struct ieee80211_channel *chan);
609
610/* sysfs attributes */
611static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
612{
613 struct mac80211_hwsim_data *data = dat;
614 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
615 struct sk_buff *skb;
616 struct ieee80211_pspoll *pspoll;
617
618 if (!vp->assoc)
619 return;
620
621 wiphy_debug(data->hw->wiphy,
622 "%s: send PS-Poll to %pM for aid %d\n",
623 __func__, vp->bssid, vp->aid);
624
625 skb = dev_alloc_skb(sizeof(*pspoll));
626 if (!skb)
627 return;
628 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
629 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
630 IEEE80211_STYPE_PSPOLL |
631 IEEE80211_FCTL_PM);
632 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
633 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
634 memcpy(pspoll->ta, mac, ETH_ALEN);
635
636 rcu_read_lock();
637 mac80211_hwsim_tx_frame(data->hw, skb,
638 rcu_dereference(vif->chanctx_conf)->def.chan);
639 rcu_read_unlock();
640}
641
642static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
643 struct ieee80211_vif *vif, int ps)
644{
645 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
646 struct sk_buff *skb;
647 struct ieee80211_hdr *hdr;
648
649 if (!vp->assoc)
650 return;
651
652 wiphy_debug(data->hw->wiphy,
653 "%s: send data::nullfunc to %pM ps=%d\n",
654 __func__, vp->bssid, ps);
655
656 skb = dev_alloc_skb(sizeof(*hdr));
657 if (!skb)
658 return;
659 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
660 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
661 IEEE80211_STYPE_NULLFUNC |
662 (ps ? IEEE80211_FCTL_PM : 0));
663 hdr->duration_id = cpu_to_le16(0);
664 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
665 memcpy(hdr->addr2, mac, ETH_ALEN);
666 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
667
668 rcu_read_lock();
669 mac80211_hwsim_tx_frame(data->hw, skb,
670 rcu_dereference(vif->chanctx_conf)->def.chan);
671 rcu_read_unlock();
672}
673
674
675static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
676 struct ieee80211_vif *vif)
677{
678 struct mac80211_hwsim_data *data = dat;
679 hwsim_send_nullfunc(data, mac, vif, 1);
680}
681
682static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
683 struct ieee80211_vif *vif)
684{
685 struct mac80211_hwsim_data *data = dat;
686 hwsim_send_nullfunc(data, mac, vif, 0);
687}
688
689static int hwsim_fops_ps_read(void *dat, u64 *val)
690{
691 struct mac80211_hwsim_data *data = dat;
692 *val = data->ps;
693 return 0;
694}
695
696static int hwsim_fops_ps_write(void *dat, u64 val)
697{
698 struct mac80211_hwsim_data *data = dat;
699 enum ps_mode old_ps;
700
701 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
702 val != PS_MANUAL_POLL)
703 return -EINVAL;
704
705 old_ps = data->ps;
706 data->ps = val;
707
708 local_bh_disable();
709 if (val == PS_MANUAL_POLL) {
710 ieee80211_iterate_active_interfaces_atomic(
711 data->hw, IEEE80211_IFACE_ITER_NORMAL,
712 hwsim_send_ps_poll, data);
713 data->ps_poll_pending = true;
714 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
715 ieee80211_iterate_active_interfaces_atomic(
716 data->hw, IEEE80211_IFACE_ITER_NORMAL,
717 hwsim_send_nullfunc_ps, data);
718 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
719 ieee80211_iterate_active_interfaces_atomic(
720 data->hw, IEEE80211_IFACE_ITER_NORMAL,
721 hwsim_send_nullfunc_no_ps, data);
722 }
723 local_bh_enable();
724
725 return 0;
726}
727
728DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
729 "%llu\n");
730
731static int hwsim_write_simulate_radar(void *dat, u64 val)
732{
733 struct mac80211_hwsim_data *data = dat;
734
735 ieee80211_radar_detected(data->hw);
736
737 return 0;
738}
739
740DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
741 hwsim_write_simulate_radar, "%llu\n");
742
743static int hwsim_fops_group_read(void *dat, u64 *val)
744{
745 struct mac80211_hwsim_data *data = dat;
746 *val = data->group;
747 return 0;
748}
749
750static int hwsim_fops_group_write(void *dat, u64 val)
751{
752 struct mac80211_hwsim_data *data = dat;
753 data->group = val;
754 return 0;
755}
756
757DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
758 hwsim_fops_group_read, hwsim_fops_group_write,
759 "%llx\n");
760
761static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
762 struct net_device *dev)
763{
764 /* TODO: allow packet injection */
765 dev_kfree_skb(skb);
766 return NETDEV_TX_OK;
767}
768
769static inline u64 mac80211_hwsim_get_tsf_raw(void)
770{
771 return ktime_to_us(ktime_get_real());
772}
773
774static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
775{
776 u64 now = mac80211_hwsim_get_tsf_raw();
777 return cpu_to_le64(now + data->tsf_offset);
778}
779
780static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
781 struct ieee80211_vif *vif)
782{
783 struct mac80211_hwsim_data *data = hw->priv;
784 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
785}
786
787static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
788 struct ieee80211_vif *vif, u64 tsf)
789{
790 struct mac80211_hwsim_data *data = hw->priv;
791 u64 now = mac80211_hwsim_get_tsf(hw, vif);
792 u32 bcn_int = data->beacon_int;
793 u64 delta = abs(tsf - now);
794
795 /* adjust after beaconing with new timestamp at old TBTT */
796 if (tsf > now) {
797 data->tsf_offset += delta;
798 data->bcn_delta = do_div(delta, bcn_int);
799 } else {
800 data->tsf_offset -= delta;
801 data->bcn_delta = -do_div(delta, bcn_int);
802 }
803}
804
805static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
806 struct sk_buff *tx_skb,
807 struct ieee80211_channel *chan)
808{
809 struct mac80211_hwsim_data *data = hw->priv;
810 struct sk_buff *skb;
811 struct hwsim_radiotap_hdr *hdr;
812 u16 flags;
813 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
814 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
815
816 if (!netif_running(hwsim_mon))
817 return;
818
819 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
820 if (skb == NULL)
821 return;
822
823 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
824 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
825 hdr->hdr.it_pad = 0;
826 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
827 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
828 (1 << IEEE80211_RADIOTAP_RATE) |
829 (1 << IEEE80211_RADIOTAP_TSFT) |
830 (1 << IEEE80211_RADIOTAP_CHANNEL));
831 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
832 hdr->rt_flags = 0;
833 hdr->rt_rate = txrate->bitrate / 5;
834 hdr->rt_channel = cpu_to_le16(chan->center_freq);
835 flags = IEEE80211_CHAN_2GHZ;
836 if (txrate->flags & IEEE80211_RATE_ERP_G)
837 flags |= IEEE80211_CHAN_OFDM;
838 else
839 flags |= IEEE80211_CHAN_CCK;
840 hdr->rt_chbitmask = cpu_to_le16(flags);
841
842 skb->dev = hwsim_mon;
843 skb_set_mac_header(skb, 0);
844 skb->ip_summed = CHECKSUM_UNNECESSARY;
845 skb->pkt_type = PACKET_OTHERHOST;
846 skb->protocol = htons(ETH_P_802_2);
847 memset(skb->cb, 0, sizeof(skb->cb));
848 netif_rx(skb);
849}
850
851
852static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
853 const u8 *addr)
854{
855 struct sk_buff *skb;
856 struct hwsim_radiotap_ack_hdr *hdr;
857 u16 flags;
858 struct ieee80211_hdr *hdr11;
859
860 if (!netif_running(hwsim_mon))
861 return;
862
863 skb = dev_alloc_skb(100);
864 if (skb == NULL)
865 return;
866
867 hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
868 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
869 hdr->hdr.it_pad = 0;
870 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
871 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
872 (1 << IEEE80211_RADIOTAP_CHANNEL));
873 hdr->rt_flags = 0;
874 hdr->pad = 0;
875 hdr->rt_channel = cpu_to_le16(chan->center_freq);
876 flags = IEEE80211_CHAN_2GHZ;
877 hdr->rt_chbitmask = cpu_to_le16(flags);
878
879 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
880 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
881 IEEE80211_STYPE_ACK);
882 hdr11->duration_id = cpu_to_le16(0);
883 memcpy(hdr11->addr1, addr, ETH_ALEN);
884
885 skb->dev = hwsim_mon;
886 skb_set_mac_header(skb, 0);
887 skb->ip_summed = CHECKSUM_UNNECESSARY;
888 skb->pkt_type = PACKET_OTHERHOST;
889 skb->protocol = htons(ETH_P_802_2);
890 memset(skb->cb, 0, sizeof(skb->cb));
891 netif_rx(skb);
892}
893
894struct mac80211_hwsim_addr_match_data {
895 u8 addr[ETH_ALEN];
896 bool ret;
897};
898
899static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
900 struct ieee80211_vif *vif)
901{
902 struct mac80211_hwsim_addr_match_data *md = data;
903
904 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
905 md->ret = true;
906}
907
908static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
909 const u8 *addr)
910{
911 struct mac80211_hwsim_addr_match_data md = {
912 .ret = false,
913 };
914
915 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
916 return true;
917
918 memcpy(md.addr, addr, ETH_ALEN);
919
920 ieee80211_iterate_active_interfaces_atomic(data->hw,
921 IEEE80211_IFACE_ITER_NORMAL,
922 mac80211_hwsim_addr_iter,
923 &md);
924
925 return md.ret;
926}
927
928static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
929 struct sk_buff *skb)
930{
931 switch (data->ps) {
932 case PS_DISABLED:
933 return true;
934 case PS_ENABLED:
935 return false;
936 case PS_AUTO_POLL:
937 /* TODO: accept (some) Beacons by default and other frames only
938 * if pending PS-Poll has been sent */
939 return true;
940 case PS_MANUAL_POLL:
941 /* Allow unicast frames to own address if there is a pending
942 * PS-Poll */
943 if (data->ps_poll_pending &&
944 mac80211_hwsim_addr_match(data, skb->data + 4)) {
945 data->ps_poll_pending = false;
946 return true;
947 }
948 return false;
949 }
950
951 return true;
952}
953
954static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
955 struct sk_buff *my_skb,
956 int dst_portid)
957{
958 struct sk_buff *skb;
959 struct mac80211_hwsim_data *data = hw->priv;
960 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
961 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
962 void *msg_head;
963 unsigned int hwsim_flags = 0;
964 int i;
965 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
966
967 if (data->ps != PS_DISABLED)
968 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
969 /* If the queue contains MAX_QUEUE skb's drop some */
970 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
971 /* Droping until WARN_QUEUE level */
972 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
973 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
974 data->tx_dropped++;
975 }
976 }
977
978 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
979 if (skb == NULL)
980 goto nla_put_failure;
981
982 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
983 HWSIM_CMD_FRAME);
984 if (msg_head == NULL) {
985 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
986 goto nla_put_failure;
987 }
988
989 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER, ETH_ALEN, hdr->addr2))
990 goto nla_put_failure;
991
992 /* We get the skb->data */
993 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
994 goto nla_put_failure;
995
996 /* We get the flags for this transmission, and we translate them to
997 wmediumd flags */
998
999 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1000 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1001
1002 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1003 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1004
1005 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1006 goto nla_put_failure;
1007
1008 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1009 goto nla_put_failure;
1010
1011 /* We get the tx control (rate and retries) info*/
1012
1013 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1014 tx_attempts[i].idx = info->status.rates[i].idx;
1015 tx_attempts[i].count = info->status.rates[i].count;
1016 }
1017
1018 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1019 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1020 tx_attempts))
1021 goto nla_put_failure;
1022
1023 /* We create a cookie to identify this skb */
1024 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
1025 goto nla_put_failure;
1026
1027 genlmsg_end(skb, msg_head);
1028 if (genlmsg_unicast(&init_net, skb, dst_portid))
1029 goto err_free_txskb;
1030
1031 /* Enqueue the packet */
1032 skb_queue_tail(&data->pending, my_skb);
1033 data->tx_pkts++;
1034 data->tx_bytes += my_skb->len;
1035 return;
1036
1037nla_put_failure:
1038 nlmsg_free(skb);
1039err_free_txskb:
1040 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1041 ieee80211_free_txskb(hw, my_skb);
1042 data->tx_failed++;
1043}
1044
1045static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1046 struct ieee80211_channel *c2)
1047{
1048 if (!c1 || !c2)
1049 return false;
1050
1051 return c1->center_freq == c2->center_freq;
1052}
1053
1054struct tx_iter_data {
1055 struct ieee80211_channel *channel;
1056 bool receive;
1057};
1058
1059static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1060 struct ieee80211_vif *vif)
1061{
1062 struct tx_iter_data *data = _data;
1063
1064 if (!vif->chanctx_conf)
1065 return;
1066
1067 if (!hwsim_chans_compat(data->channel,
1068 rcu_dereference(vif->chanctx_conf)->def.chan))
1069 return;
1070
1071 data->receive = true;
1072}
1073
1074static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1075{
1076 /*
1077 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1078 * e.g. like this:
1079 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1080 * (but you should use a valid OUI, not that)
1081 *
1082 * If anyone wants to 'donate' a radiotap OUI/subns code
1083 * please send a patch removing this #ifdef and changing
1084 * the values accordingly.
1085 */
1086#ifdef HWSIM_RADIOTAP_OUI
1087 struct ieee80211_vendor_radiotap *rtap;
1088
1089 /*
1090 * Note that this code requires the headroom in the SKB
1091 * that was allocated earlier.
1092 */
1093 rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1094 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1095 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1096 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1097 rtap->subns = 127;
1098
1099 /*
1100 * Radiotap vendor namespaces can (and should) also be
1101 * split into fields by using the standard radiotap
1102 * presence bitmap mechanism. Use just BIT(0) here for
1103 * the presence bitmap.
1104 */
1105 rtap->present = BIT(0);
1106 /* We have 8 bytes of (dummy) data */
1107 rtap->len = 8;
1108 /* For testing, also require it to be aligned */
1109 rtap->align = 8;
1110 /* And also test that padding works, 4 bytes */
1111 rtap->pad = 4;
1112 /* push the data */
1113 memcpy(rtap->data, "ABCDEFGH", 8);
1114 /* make sure to clear padding, mac80211 doesn't */
1115 memset(rtap->data + 8, 0, 4);
1116
1117 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1118#endif
1119}
1120
1121static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1122 struct sk_buff *skb,
1123 struct ieee80211_channel *chan)
1124{
1125 struct mac80211_hwsim_data *data = hw->priv, *data2;
1126 bool ack = false;
1127 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1128 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1129 struct ieee80211_rx_status rx_status;
1130 u64 now;
1131
1132 memset(&rx_status, 0, sizeof(rx_status));
1133 rx_status.flag |= RX_FLAG_MACTIME_START;
1134 rx_status.freq = chan->center_freq;
1135 rx_status.band = chan->band;
1136 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1137 rx_status.rate_idx =
1138 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1139 rx_status.vht_nss =
1140 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1141 rx_status.flag |= RX_FLAG_VHT;
1142 } else {
1143 rx_status.rate_idx = info->control.rates[0].idx;
1144 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1145 rx_status.flag |= RX_FLAG_HT;
1146 }
1147 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1148 rx_status.flag |= RX_FLAG_40MHZ;
1149 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1150 rx_status.flag |= RX_FLAG_SHORT_GI;
1151 /* TODO: simulate real signal strength (and optional packet loss) */
1152 rx_status.signal = data->power_level - 50;
1153
1154 if (data->ps != PS_DISABLED)
1155 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1156
1157 /* release the skb's source info */
1158 skb_orphan(skb);
1159 skb_dst_drop(skb);
1160 skb->mark = 0;
1161 secpath_reset(skb);
1162 nf_reset(skb);
1163
1164 /*
1165 * Get absolute mactime here so all HWs RX at the "same time", and
1166 * absolute TX time for beacon mactime so the timestamp matches.
1167 * Giving beacons a different mactime than non-beacons looks messy, but
1168 * it helps the Toffset be exact and a ~10us mactime discrepancy
1169 * probably doesn't really matter.
1170 */
1171 if (ieee80211_is_beacon(hdr->frame_control) ||
1172 ieee80211_is_probe_resp(hdr->frame_control))
1173 now = data->abs_bcn_ts;
1174 else
1175 now = mac80211_hwsim_get_tsf_raw();
1176
1177 /* Copy skb to all enabled radios that are on the current frequency */
1178 spin_lock(&hwsim_radio_lock);
1179 list_for_each_entry(data2, &hwsim_radios, list) {
1180 struct sk_buff *nskb;
1181 struct tx_iter_data tx_iter_data = {
1182 .receive = false,
1183 .channel = chan,
1184 };
1185
1186 if (data == data2)
1187 continue;
1188
1189 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1190 !hwsim_ps_rx_ok(data2, skb))
1191 continue;
1192
1193 if (!(data->group & data2->group))
1194 continue;
1195
1196 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1197 !hwsim_chans_compat(chan, data2->channel)) {
1198 ieee80211_iterate_active_interfaces_atomic(
1199 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1200 mac80211_hwsim_tx_iter, &tx_iter_data);
1201 if (!tx_iter_data.receive)
1202 continue;
1203 }
1204
1205 /*
1206 * reserve some space for our vendor and the normal
1207 * radiotap header, since we're copying anyway
1208 */
1209 if (skb->len < PAGE_SIZE && paged_rx) {
1210 struct page *page = alloc_page(GFP_ATOMIC);
1211
1212 if (!page)
1213 continue;
1214
1215 nskb = dev_alloc_skb(128);
1216 if (!nskb) {
1217 __free_page(page);
1218 continue;
1219 }
1220
1221 memcpy(page_address(page), skb->data, skb->len);
1222 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1223 } else {
1224 nskb = skb_copy(skb, GFP_ATOMIC);
1225 if (!nskb)
1226 continue;
1227 }
1228
1229 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1230 ack = true;
1231
1232 rx_status.mactime = now + data2->tsf_offset;
1233
1234 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1235
1236 mac80211_hwsim_add_vendor_rtap(nskb);
1237
1238 data2->rx_pkts++;
1239 data2->rx_bytes += nskb->len;
1240 ieee80211_rx_irqsafe(data2->hw, nskb);
1241 }
1242 spin_unlock(&hwsim_radio_lock);
1243
1244 return ack;
1245}
1246
1247static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1248 struct ieee80211_tx_control *control,
1249 struct sk_buff *skb)
1250{
1251 struct mac80211_hwsim_data *data = hw->priv;
1252 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1253 struct ieee80211_hdr *hdr = (void *)skb->data;
1254 struct ieee80211_chanctx_conf *chanctx_conf;
1255 struct ieee80211_channel *channel;
1256 bool ack;
1257 u32 _portid;
1258
1259 if (WARN_ON(skb->len < 10)) {
1260 /* Should not happen; just a sanity check for addr1 use */
1261 ieee80211_free_txskb(hw, skb);
1262 return;
1263 }
1264
1265 if (!data->use_chanctx) {
1266 channel = data->channel;
1267 } else if (txi->hw_queue == 4) {
1268 channel = data->tmp_chan;
1269 } else {
1270 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1271 if (chanctx_conf)
1272 channel = chanctx_conf->def.chan;
1273 else
1274 channel = NULL;
1275 }
1276
1277 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1278 ieee80211_free_txskb(hw, skb);
1279 return;
1280 }
1281
1282 if (data->idle && !data->tmp_chan) {
1283 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1284 ieee80211_free_txskb(hw, skb);
1285 return;
1286 }
1287
1288 if (txi->control.vif)
1289 hwsim_check_magic(txi->control.vif);
1290 if (control->sta)
1291 hwsim_check_sta_magic(control->sta);
1292
1293 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1294 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1295 txi->control.rates,
1296 ARRAY_SIZE(txi->control.rates));
1297
1298 txi->rate_driver_data[0] = channel;
1299
1300 if (skb->len >= 24 + 8 &&
1301 ieee80211_is_probe_resp(hdr->frame_control)) {
1302 /* fake header transmission time */
1303 struct ieee80211_mgmt *mgmt;
1304 struct ieee80211_rate *txrate;
1305 u64 ts;
1306
1307 mgmt = (struct ieee80211_mgmt *)skb->data;
1308 txrate = ieee80211_get_tx_rate(hw, txi);
1309 ts = mac80211_hwsim_get_tsf_raw();
1310 mgmt->u.probe_resp.timestamp =
1311 cpu_to_le64(ts + data->tsf_offset +
1312 24 * 8 * 10 / txrate->bitrate);
1313 }
1314
1315 mac80211_hwsim_monitor_rx(hw, skb, channel);
1316
1317 /* wmediumd mode check */
1318 _portid = ACCESS_ONCE(wmediumd_portid);
1319
1320 if (_portid)
1321 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1322
1323 /* NO wmediumd detected, perfect medium simulation */
1324 data->tx_pkts++;
1325 data->tx_bytes += skb->len;
1326 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1327
1328 if (ack && skb->len >= 16) {
1329 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1330 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1331 }
1332
1333 ieee80211_tx_info_clear_status(txi);
1334
1335 /* frame was transmitted at most favorable rate at first attempt */
1336 txi->control.rates[0].count = 1;
1337 txi->control.rates[1].idx = -1;
1338
1339 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1340 txi->flags |= IEEE80211_TX_STAT_ACK;
1341 ieee80211_tx_status_irqsafe(hw, skb);
1342}
1343
1344
1345static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1346{
1347 struct mac80211_hwsim_data *data = hw->priv;
1348 wiphy_debug(hw->wiphy, "%s\n", __func__);
1349 data->started = true;
1350 return 0;
1351}
1352
1353
1354static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1355{
1356 struct mac80211_hwsim_data *data = hw->priv;
1357 data->started = false;
1358 tasklet_hrtimer_cancel(&data->beacon_timer);
1359 wiphy_debug(hw->wiphy, "%s\n", __func__);
1360}
1361
1362
1363static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1364 struct ieee80211_vif *vif)
1365{
1366 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1367 __func__, ieee80211_vif_type_p2p(vif),
1368 vif->addr);
1369 hwsim_set_magic(vif);
1370
1371 vif->cab_queue = 0;
1372 vif->hw_queue[IEEE80211_AC_VO] = 0;
1373 vif->hw_queue[IEEE80211_AC_VI] = 1;
1374 vif->hw_queue[IEEE80211_AC_BE] = 2;
1375 vif->hw_queue[IEEE80211_AC_BK] = 3;
1376
1377 return 0;
1378}
1379
1380
1381static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1382 struct ieee80211_vif *vif,
1383 enum nl80211_iftype newtype,
1384 bool newp2p)
1385{
1386 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1387 wiphy_debug(hw->wiphy,
1388 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1389 __func__, ieee80211_vif_type_p2p(vif),
1390 newtype, vif->addr);
1391 hwsim_check_magic(vif);
1392
1393 /*
1394 * interface may change from non-AP to AP in
1395 * which case this needs to be set up again
1396 */
1397 vif->cab_queue = 0;
1398
1399 return 0;
1400}
1401
1402static void mac80211_hwsim_remove_interface(
1403 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1404{
1405 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1406 __func__, ieee80211_vif_type_p2p(vif),
1407 vif->addr);
1408 hwsim_check_magic(vif);
1409 hwsim_clear_magic(vif);
1410}
1411
1412static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1413 struct sk_buff *skb,
1414 struct ieee80211_channel *chan)
1415{
1416 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1417
1418 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1419 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1420 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1421 txi->control.rates,
1422 ARRAY_SIZE(txi->control.rates));
1423 }
1424
1425 mac80211_hwsim_monitor_rx(hw, skb, chan);
1426
1427 if (_pid)
1428 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1429
1430 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1431 dev_kfree_skb(skb);
1432}
1433
1434static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1435 struct ieee80211_vif *vif)
1436{
1437 struct mac80211_hwsim_data *data = arg;
1438 struct ieee80211_hw *hw = data->hw;
1439 struct ieee80211_tx_info *info;
1440 struct ieee80211_rate *txrate;
1441 struct ieee80211_mgmt *mgmt;
1442 struct sk_buff *skb;
1443
1444 hwsim_check_magic(vif);
1445
1446 if (vif->type != NL80211_IFTYPE_AP &&
1447 vif->type != NL80211_IFTYPE_MESH_POINT &&
1448 vif->type != NL80211_IFTYPE_ADHOC)
1449 return;
1450
1451 skb = ieee80211_beacon_get(hw, vif);
1452 if (skb == NULL)
1453 return;
1454 info = IEEE80211_SKB_CB(skb);
1455 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1456 ieee80211_get_tx_rates(vif, NULL, skb,
1457 info->control.rates,
1458 ARRAY_SIZE(info->control.rates));
1459
1460 txrate = ieee80211_get_tx_rate(hw, info);
1461
1462 mgmt = (struct ieee80211_mgmt *) skb->data;
1463 /* fake header transmission time */
1464 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1465 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1466 data->tsf_offset +
1467 24 * 8 * 10 / txrate->bitrate);
1468
1469 mac80211_hwsim_tx_frame(hw, skb,
1470 rcu_dereference(vif->chanctx_conf)->def.chan);
1471
1472 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1473 ieee80211_csa_finish(vif);
1474}
1475
1476static enum hrtimer_restart
1477mac80211_hwsim_beacon(struct hrtimer *timer)
1478{
1479 struct mac80211_hwsim_data *data =
1480 container_of(timer, struct mac80211_hwsim_data,
1481 beacon_timer.timer);
1482 struct ieee80211_hw *hw = data->hw;
1483 u64 bcn_int = data->beacon_int;
1484 ktime_t next_bcn;
1485
1486 if (!data->started)
1487 goto out;
1488
1489 ieee80211_iterate_active_interfaces_atomic(
1490 hw, IEEE80211_IFACE_ITER_NORMAL,
1491 mac80211_hwsim_beacon_tx, data);
1492
1493 /* beacon at new TBTT + beacon interval */
1494 if (data->bcn_delta) {
1495 bcn_int -= data->bcn_delta;
1496 data->bcn_delta = 0;
1497 }
1498
1499 next_bcn = ktime_add(hrtimer_get_expires(timer),
1500 ns_to_ktime(bcn_int * 1000));
1501 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1502out:
1503 return HRTIMER_NORESTART;
1504}
1505
1506static const char * const hwsim_chanwidths[] = {
1507 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1508 [NL80211_CHAN_WIDTH_20] = "ht20",
1509 [NL80211_CHAN_WIDTH_40] = "ht40",
1510 [NL80211_CHAN_WIDTH_80] = "vht80",
1511 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1512 [NL80211_CHAN_WIDTH_160] = "vht160",
1513};
1514
1515static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1516{
1517 struct mac80211_hwsim_data *data = hw->priv;
1518 struct ieee80211_conf *conf = &hw->conf;
1519 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1520 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1521 [IEEE80211_SMPS_OFF] = "off",
1522 [IEEE80211_SMPS_STATIC] = "static",
1523 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1524 };
1525
1526 if (conf->chandef.chan)
1527 wiphy_debug(hw->wiphy,
1528 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1529 __func__,
1530 conf->chandef.chan->center_freq,
1531 conf->chandef.center_freq1,
1532 conf->chandef.center_freq2,
1533 hwsim_chanwidths[conf->chandef.width],
1534 !!(conf->flags & IEEE80211_CONF_IDLE),
1535 !!(conf->flags & IEEE80211_CONF_PS),
1536 smps_modes[conf->smps_mode]);
1537 else
1538 wiphy_debug(hw->wiphy,
1539 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1540 __func__,
1541 !!(conf->flags & IEEE80211_CONF_IDLE),
1542 !!(conf->flags & IEEE80211_CONF_PS),
1543 smps_modes[conf->smps_mode]);
1544
1545 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1546
1547 data->channel = conf->chandef.chan;
1548
1549 WARN_ON(data->channel && data->use_chanctx);
1550
1551 data->power_level = conf->power_level;
1552 if (!data->started || !data->beacon_int)
1553 tasklet_hrtimer_cancel(&data->beacon_timer);
1554 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1555 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1556 u32 bcn_int = data->beacon_int;
1557 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1558
1559 tasklet_hrtimer_start(&data->beacon_timer,
1560 ns_to_ktime(until_tbtt * 1000),
1561 HRTIMER_MODE_REL);
1562 }
1563
1564 return 0;
1565}
1566
1567
1568static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1569 unsigned int changed_flags,
1570 unsigned int *total_flags,u64 multicast)
1571{
1572 struct mac80211_hwsim_data *data = hw->priv;
1573
1574 wiphy_debug(hw->wiphy, "%s\n", __func__);
1575
1576 data->rx_filter = 0;
1577 if (*total_flags & FIF_ALLMULTI)
1578 data->rx_filter |= FIF_ALLMULTI;
1579
1580 *total_flags = data->rx_filter;
1581}
1582
1583static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1584 struct ieee80211_vif *vif)
1585{
1586 unsigned int *count = data;
1587 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1588
1589 if (vp->bcn_en)
1590 (*count)++;
1591}
1592
1593static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1594 struct ieee80211_vif *vif,
1595 struct ieee80211_bss_conf *info,
1596 u32 changed)
1597{
1598 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1599 struct mac80211_hwsim_data *data = hw->priv;
1600
1601 hwsim_check_magic(vif);
1602
1603 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1604 __func__, changed, vif->addr);
1605
1606 if (changed & BSS_CHANGED_BSSID) {
1607 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1608 __func__, info->bssid);
1609 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1610 }
1611
1612 if (changed & BSS_CHANGED_ASSOC) {
1613 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1614 info->assoc, info->aid);
1615 vp->assoc = info->assoc;
1616 vp->aid = info->aid;
1617 }
1618
1619 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1620 wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1621 info->enable_beacon, info->beacon_int);
1622 vp->bcn_en = info->enable_beacon;
1623 if (data->started &&
1624 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1625 info->enable_beacon) {
1626 u64 tsf, until_tbtt;
1627 u32 bcn_int;
1628 data->beacon_int = info->beacon_int * 1024;
1629 tsf = mac80211_hwsim_get_tsf(hw, vif);
1630 bcn_int = data->beacon_int;
1631 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1632 tasklet_hrtimer_start(&data->beacon_timer,
1633 ns_to_ktime(until_tbtt * 1000),
1634 HRTIMER_MODE_REL);
1635 } else if (!info->enable_beacon) {
1636 unsigned int count = 0;
1637 ieee80211_iterate_active_interfaces_atomic(
1638 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1639 mac80211_hwsim_bcn_en_iter, &count);
1640 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1641 count);
1642 if (count == 0) {
1643 tasklet_hrtimer_cancel(&data->beacon_timer);
1644 data->beacon_int = 0;
1645 }
1646 }
1647 }
1648
1649 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1650 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1651 info->use_cts_prot);
1652 }
1653
1654 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1655 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1656 info->use_short_preamble);
1657 }
1658
1659 if (changed & BSS_CHANGED_ERP_SLOT) {
1660 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1661 }
1662
1663 if (changed & BSS_CHANGED_HT) {
1664 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1665 info->ht_operation_mode);
1666 }
1667
1668 if (changed & BSS_CHANGED_BASIC_RATES) {
1669 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1670 (unsigned long long) info->basic_rates);
1671 }
1672
1673 if (changed & BSS_CHANGED_TXPOWER)
1674 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1675}
1676
1677static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1678 struct ieee80211_vif *vif,
1679 struct ieee80211_sta *sta)
1680{
1681 hwsim_check_magic(vif);
1682 hwsim_set_sta_magic(sta);
1683
1684 return 0;
1685}
1686
1687static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1688 struct ieee80211_vif *vif,
1689 struct ieee80211_sta *sta)
1690{
1691 hwsim_check_magic(vif);
1692 hwsim_clear_sta_magic(sta);
1693
1694 return 0;
1695}
1696
1697static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1698 struct ieee80211_vif *vif,
1699 enum sta_notify_cmd cmd,
1700 struct ieee80211_sta *sta)
1701{
1702 hwsim_check_magic(vif);
1703
1704 switch (cmd) {
1705 case STA_NOTIFY_SLEEP:
1706 case STA_NOTIFY_AWAKE:
1707 /* TODO: make good use of these flags */
1708 break;
1709 default:
1710 WARN(1, "Invalid sta notify: %d\n", cmd);
1711 break;
1712 }
1713}
1714
1715static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1716 struct ieee80211_sta *sta,
1717 bool set)
1718{
1719 hwsim_check_sta_magic(sta);
1720 return 0;
1721}
1722
1723static int mac80211_hwsim_conf_tx(
1724 struct ieee80211_hw *hw,
1725 struct ieee80211_vif *vif, u16 queue,
1726 const struct ieee80211_tx_queue_params *params)
1727{
1728 wiphy_debug(hw->wiphy,
1729 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1730 __func__, queue,
1731 params->txop, params->cw_min,
1732 params->cw_max, params->aifs);
1733 return 0;
1734}
1735
1736static int mac80211_hwsim_get_survey(
1737 struct ieee80211_hw *hw, int idx,
1738 struct survey_info *survey)
1739{
1740 struct ieee80211_conf *conf = &hw->conf;
1741
1742 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1743
1744 if (idx != 0)
1745 return -ENOENT;
1746
1747 /* Current channel */
1748 survey->channel = conf->chandef.chan;
1749
1750 /*
1751 * Magically conjured noise level --- this is only ok for simulated hardware.
1752 *
1753 * A real driver which cannot determine the real channel noise MUST NOT
1754 * report any noise, especially not a magically conjured one :-)
1755 */
1756 survey->filled = SURVEY_INFO_NOISE_DBM;
1757 survey->noise = -92;
1758
1759 return 0;
1760}
1761
1762#ifdef CONFIG_NL80211_TESTMODE
1763/*
1764 * This section contains example code for using netlink
1765 * attributes with the testmode command in nl80211.
1766 */
1767
1768/* These enums need to be kept in sync with userspace */
1769enum hwsim_testmode_attr {
1770 __HWSIM_TM_ATTR_INVALID = 0,
1771 HWSIM_TM_ATTR_CMD = 1,
1772 HWSIM_TM_ATTR_PS = 2,
1773
1774 /* keep last */
1775 __HWSIM_TM_ATTR_AFTER_LAST,
1776 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1777};
1778
1779enum hwsim_testmode_cmd {
1780 HWSIM_TM_CMD_SET_PS = 0,
1781 HWSIM_TM_CMD_GET_PS = 1,
1782 HWSIM_TM_CMD_STOP_QUEUES = 2,
1783 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1784};
1785
1786static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1787 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1788 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1789};
1790
1791static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1792 struct ieee80211_vif *vif,
1793 void *data, int len)
1794{
1795 struct mac80211_hwsim_data *hwsim = hw->priv;
1796 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1797 struct sk_buff *skb;
1798 int err, ps;
1799
1800 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1801 hwsim_testmode_policy);
1802 if (err)
1803 return err;
1804
1805 if (!tb[HWSIM_TM_ATTR_CMD])
1806 return -EINVAL;
1807
1808 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1809 case HWSIM_TM_CMD_SET_PS:
1810 if (!tb[HWSIM_TM_ATTR_PS])
1811 return -EINVAL;
1812 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1813 return hwsim_fops_ps_write(hwsim, ps);
1814 case HWSIM_TM_CMD_GET_PS:
1815 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1816 nla_total_size(sizeof(u32)));
1817 if (!skb)
1818 return -ENOMEM;
1819 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1820 goto nla_put_failure;
1821 return cfg80211_testmode_reply(skb);
1822 case HWSIM_TM_CMD_STOP_QUEUES:
1823 ieee80211_stop_queues(hw);
1824 return 0;
1825 case HWSIM_TM_CMD_WAKE_QUEUES:
1826 ieee80211_wake_queues(hw);
1827 return 0;
1828 default:
1829 return -EOPNOTSUPP;
1830 }
1831
1832 nla_put_failure:
1833 kfree_skb(skb);
1834 return -ENOBUFS;
1835}
1836#endif
1837
1838static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1839 struct ieee80211_vif *vif,
1840 enum ieee80211_ampdu_mlme_action action,
1841 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1842 u8 buf_size, bool amsdu)
1843{
1844 switch (action) {
1845 case IEEE80211_AMPDU_TX_START:
1846 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1847 break;
1848 case IEEE80211_AMPDU_TX_STOP_CONT:
1849 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1850 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1851 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1852 break;
1853 case IEEE80211_AMPDU_TX_OPERATIONAL:
1854 break;
1855 case IEEE80211_AMPDU_RX_START:
1856 case IEEE80211_AMPDU_RX_STOP:
1857 break;
1858 default:
1859 return -EOPNOTSUPP;
1860 }
1861
1862 return 0;
1863}
1864
1865static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1866 struct ieee80211_vif *vif,
1867 u32 queues, bool drop)
1868{
1869 /* Not implemented, queues only on kernel side */
1870}
1871
1872static void hw_scan_work(struct work_struct *work)
1873{
1874 struct mac80211_hwsim_data *hwsim =
1875 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1876 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1877 int dwell, i;
1878
1879 mutex_lock(&hwsim->mutex);
1880 if (hwsim->scan_chan_idx >= req->n_channels) {
1881 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1882 ieee80211_scan_completed(hwsim->hw, false);
1883 hwsim->hw_scan_request = NULL;
1884 hwsim->hw_scan_vif = NULL;
1885 hwsim->tmp_chan = NULL;
1886 mutex_unlock(&hwsim->mutex);
1887 return;
1888 }
1889
1890 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1891 req->channels[hwsim->scan_chan_idx]->center_freq);
1892
1893 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1894 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1895 IEEE80211_CHAN_RADAR) ||
1896 !req->n_ssids) {
1897 dwell = 120;
1898 } else {
1899 dwell = 30;
1900 /* send probes */
1901 for (i = 0; i < req->n_ssids; i++) {
1902 struct sk_buff *probe;
1903
1904 probe = ieee80211_probereq_get(hwsim->hw,
1905 hwsim->scan_addr,
1906 req->ssids[i].ssid,
1907 req->ssids[i].ssid_len,
1908 req->ie_len);
1909 if (!probe)
1910 continue;
1911
1912 if (req->ie_len)
1913 memcpy(skb_put(probe, req->ie_len), req->ie,
1914 req->ie_len);
1915
1916 local_bh_disable();
1917 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1918 hwsim->tmp_chan);
1919 local_bh_enable();
1920 }
1921 }
1922 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1923 msecs_to_jiffies(dwell));
1924 hwsim->scan_chan_idx++;
1925 mutex_unlock(&hwsim->mutex);
1926}
1927
1928static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1929 struct ieee80211_vif *vif,
1930 struct ieee80211_scan_request *hw_req)
1931{
1932 struct mac80211_hwsim_data *hwsim = hw->priv;
1933 struct cfg80211_scan_request *req = &hw_req->req;
1934
1935 mutex_lock(&hwsim->mutex);
1936 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1937 mutex_unlock(&hwsim->mutex);
1938 return -EBUSY;
1939 }
1940 hwsim->hw_scan_request = req;
1941 hwsim->hw_scan_vif = vif;
1942 hwsim->scan_chan_idx = 0;
1943 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1944 get_random_mask_addr(hwsim->scan_addr,
1945 hw_req->req.mac_addr,
1946 hw_req->req.mac_addr_mask);
1947 else
1948 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1949 mutex_unlock(&hwsim->mutex);
1950
1951 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1952
1953 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1954
1955 return 0;
1956}
1957
1958static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1959 struct ieee80211_vif *vif)
1960{
1961 struct mac80211_hwsim_data *hwsim = hw->priv;
1962
1963 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1964
1965 cancel_delayed_work_sync(&hwsim->hw_scan);
1966
1967 mutex_lock(&hwsim->mutex);
1968 ieee80211_scan_completed(hwsim->hw, true);
1969 hwsim->tmp_chan = NULL;
1970 hwsim->hw_scan_request = NULL;
1971 hwsim->hw_scan_vif = NULL;
1972 mutex_unlock(&hwsim->mutex);
1973}
1974
1975static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1976 struct ieee80211_vif *vif,
1977 const u8 *mac_addr)
1978{
1979 struct mac80211_hwsim_data *hwsim = hw->priv;
1980
1981 mutex_lock(&hwsim->mutex);
1982
1983 if (hwsim->scanning) {
1984 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1985 goto out;
1986 }
1987
1988 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1989
1990 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1991 hwsim->scanning = true;
1992
1993out:
1994 mutex_unlock(&hwsim->mutex);
1995}
1996
1997static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
1998 struct ieee80211_vif *vif)
1999{
2000 struct mac80211_hwsim_data *hwsim = hw->priv;
2001
2002 mutex_lock(&hwsim->mutex);
2003
2004 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2005 hwsim->scanning = false;
2006 eth_zero_addr(hwsim->scan_addr);
2007
2008 mutex_unlock(&hwsim->mutex);
2009}
2010
2011static void hw_roc_start(struct work_struct *work)
2012{
2013 struct mac80211_hwsim_data *hwsim =
2014 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2015
2016 mutex_lock(&hwsim->mutex);
2017
2018 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2019 hwsim->tmp_chan = hwsim->roc_chan;
2020 ieee80211_ready_on_channel(hwsim->hw);
2021
2022 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2023 msecs_to_jiffies(hwsim->roc_duration));
2024
2025 mutex_unlock(&hwsim->mutex);
2026}
2027
2028static void hw_roc_done(struct work_struct *work)
2029{
2030 struct mac80211_hwsim_data *hwsim =
2031 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2032
2033 mutex_lock(&hwsim->mutex);
2034 ieee80211_remain_on_channel_expired(hwsim->hw);
2035 hwsim->tmp_chan = NULL;
2036 mutex_unlock(&hwsim->mutex);
2037
2038 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2039}
2040
2041static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2042 struct ieee80211_vif *vif,
2043 struct ieee80211_channel *chan,
2044 int duration,
2045 enum ieee80211_roc_type type)
2046{
2047 struct mac80211_hwsim_data *hwsim = hw->priv;
2048
2049 mutex_lock(&hwsim->mutex);
2050 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2051 mutex_unlock(&hwsim->mutex);
2052 return -EBUSY;
2053 }
2054
2055 hwsim->roc_chan = chan;
2056 hwsim->roc_duration = duration;
2057 mutex_unlock(&hwsim->mutex);
2058
2059 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2060 chan->center_freq, duration);
2061 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2062
2063 return 0;
2064}
2065
2066static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2067{
2068 struct mac80211_hwsim_data *hwsim = hw->priv;
2069
2070 cancel_delayed_work_sync(&hwsim->roc_start);
2071 cancel_delayed_work_sync(&hwsim->roc_done);
2072
2073 mutex_lock(&hwsim->mutex);
2074 hwsim->tmp_chan = NULL;
2075 mutex_unlock(&hwsim->mutex);
2076
2077 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2078
2079 return 0;
2080}
2081
2082static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2083 struct ieee80211_chanctx_conf *ctx)
2084{
2085 hwsim_set_chanctx_magic(ctx);
2086 wiphy_debug(hw->wiphy,
2087 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2088 ctx->def.chan->center_freq, ctx->def.width,
2089 ctx->def.center_freq1, ctx->def.center_freq2);
2090 return 0;
2091}
2092
2093static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2094 struct ieee80211_chanctx_conf *ctx)
2095{
2096 wiphy_debug(hw->wiphy,
2097 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2098 ctx->def.chan->center_freq, ctx->def.width,
2099 ctx->def.center_freq1, ctx->def.center_freq2);
2100 hwsim_check_chanctx_magic(ctx);
2101 hwsim_clear_chanctx_magic(ctx);
2102}
2103
2104static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2105 struct ieee80211_chanctx_conf *ctx,
2106 u32 changed)
2107{
2108 hwsim_check_chanctx_magic(ctx);
2109 wiphy_debug(hw->wiphy,
2110 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2111 ctx->def.chan->center_freq, ctx->def.width,
2112 ctx->def.center_freq1, ctx->def.center_freq2);
2113}
2114
2115static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2116 struct ieee80211_vif *vif,
2117 struct ieee80211_chanctx_conf *ctx)
2118{
2119 hwsim_check_magic(vif);
2120 hwsim_check_chanctx_magic(ctx);
2121
2122 return 0;
2123}
2124
2125static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2126 struct ieee80211_vif *vif,
2127 struct ieee80211_chanctx_conf *ctx)
2128{
2129 hwsim_check_magic(vif);
2130 hwsim_check_chanctx_magic(ctx);
2131}
2132
2133static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2134 "tx_pkts_nic",
2135 "tx_bytes_nic",
2136 "rx_pkts_nic",
2137 "rx_bytes_nic",
2138 "d_tx_dropped",
2139 "d_tx_failed",
2140 "d_ps_mode",
2141 "d_group",
2142 "d_tx_power",
2143};
2144
2145#define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2146
2147static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2148 struct ieee80211_vif *vif,
2149 u32 sset, u8 *data)
2150{
2151 if (sset == ETH_SS_STATS)
2152 memcpy(data, *mac80211_hwsim_gstrings_stats,
2153 sizeof(mac80211_hwsim_gstrings_stats));
2154}
2155
2156static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2157 struct ieee80211_vif *vif, int sset)
2158{
2159 if (sset == ETH_SS_STATS)
2160 return MAC80211_HWSIM_SSTATS_LEN;
2161 return 0;
2162}
2163
2164static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2165 struct ieee80211_vif *vif,
2166 struct ethtool_stats *stats, u64 *data)
2167{
2168 struct mac80211_hwsim_data *ar = hw->priv;
2169 int i = 0;
2170
2171 data[i++] = ar->tx_pkts;
2172 data[i++] = ar->tx_bytes;
2173 data[i++] = ar->rx_pkts;
2174 data[i++] = ar->rx_bytes;
2175 data[i++] = ar->tx_dropped;
2176 data[i++] = ar->tx_failed;
2177 data[i++] = ar->ps;
2178 data[i++] = ar->group;
2179 data[i++] = ar->power_level;
2180
2181 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2182}
2183
2184static const struct ieee80211_ops mac80211_hwsim_ops = {
2185 .tx = mac80211_hwsim_tx,
2186 .start = mac80211_hwsim_start,
2187 .stop = mac80211_hwsim_stop,
2188 .add_interface = mac80211_hwsim_add_interface,
2189 .change_interface = mac80211_hwsim_change_interface,
2190 .remove_interface = mac80211_hwsim_remove_interface,
2191 .config = mac80211_hwsim_config,
2192 .configure_filter = mac80211_hwsim_configure_filter,
2193 .bss_info_changed = mac80211_hwsim_bss_info_changed,
2194 .sta_add = mac80211_hwsim_sta_add,
2195 .sta_remove = mac80211_hwsim_sta_remove,
2196 .sta_notify = mac80211_hwsim_sta_notify,
2197 .set_tim = mac80211_hwsim_set_tim,
2198 .conf_tx = mac80211_hwsim_conf_tx,
2199 .get_survey = mac80211_hwsim_get_survey,
2200 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2201 .ampdu_action = mac80211_hwsim_ampdu_action,
2202 .sw_scan_start = mac80211_hwsim_sw_scan,
2203 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2204 .flush = mac80211_hwsim_flush,
2205 .get_tsf = mac80211_hwsim_get_tsf,
2206 .set_tsf = mac80211_hwsim_set_tsf,
2207 .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2208 .get_et_stats = mac80211_hwsim_get_et_stats,
2209 .get_et_strings = mac80211_hwsim_get_et_strings,
2210};
2211
2212static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2213
2214struct hwsim_new_radio_params {
2215 unsigned int channels;
2216 const char *reg_alpha2;
2217 const struct ieee80211_regdomain *regd;
2218 bool reg_strict;
2219 bool p2p_device;
2220 bool use_chanctx;
2221 bool destroy_on_close;
2222 const char *hwname;
2223 bool no_vif;
2224};
2225
2226static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2227 struct genl_info *info)
2228{
2229 if (info)
2230 genl_notify(&hwsim_genl_family, mcast_skb, info,
2231 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2232 else
2233 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2234 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2235}
2236
2237static int append_radio_msg(struct sk_buff *skb, int id,
2238 struct hwsim_new_radio_params *param)
2239{
2240 int ret;
2241
2242 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2243 if (ret < 0)
2244 return ret;
2245
2246 if (param->channels) {
2247 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2248 if (ret < 0)
2249 return ret;
2250 }
2251
2252 if (param->reg_alpha2) {
2253 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2254 param->reg_alpha2);
2255 if (ret < 0)
2256 return ret;
2257 }
2258
2259 if (param->regd) {
2260 int i;
2261
2262 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2263 if (hwsim_world_regdom_custom[i] != param->regd)
2264 continue;
2265
2266 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2267 if (ret < 0)
2268 return ret;
2269 break;
2270 }
2271 }
2272
2273 if (param->reg_strict) {
2274 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2275 if (ret < 0)
2276 return ret;
2277 }
2278
2279 if (param->p2p_device) {
2280 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2281 if (ret < 0)
2282 return ret;
2283 }
2284
2285 if (param->use_chanctx) {
2286 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2287 if (ret < 0)
2288 return ret;
2289 }
2290
2291 if (param->hwname) {
2292 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2293 strlen(param->hwname), param->hwname);
2294 if (ret < 0)
2295 return ret;
2296 }
2297
2298 return 0;
2299}
2300
2301static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2302 struct hwsim_new_radio_params *param)
2303{
2304 struct sk_buff *mcast_skb;
2305 void *data;
2306
2307 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2308 if (!mcast_skb)
2309 return;
2310
2311 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2312 HWSIM_CMD_NEW_RADIO);
2313 if (!data)
2314 goto out_err;
2315
2316 if (append_radio_msg(mcast_skb, id, param) < 0)
2317 goto out_err;
2318
2319 genlmsg_end(mcast_skb, data);
2320
2321 hwsim_mcast_config_msg(mcast_skb, info);
2322 return;
2323
2324out_err:
2325 genlmsg_cancel(mcast_skb, data);
2326 nlmsg_free(mcast_skb);
2327}
2328
2329static int mac80211_hwsim_new_radio(struct genl_info *info,
2330 struct hwsim_new_radio_params *param)
2331{
2332 int err;
2333 u8 addr[ETH_ALEN];
2334 struct mac80211_hwsim_data *data;
2335 struct ieee80211_hw *hw;
2336 enum ieee80211_band band;
2337 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2338 int idx;
2339
2340 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2341 return -EINVAL;
2342
2343 spin_lock_bh(&hwsim_radio_lock);
2344 idx = hwsim_radio_idx++;
2345 spin_unlock_bh(&hwsim_radio_lock);
2346
2347 if (param->use_chanctx)
2348 ops = &mac80211_hwsim_mchan_ops;
2349 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2350 if (!hw) {
2351 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2352 err = -ENOMEM;
2353 goto failed;
2354 }
2355 data = hw->priv;
2356 data->hw = hw;
2357
2358 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2359 if (IS_ERR(data->dev)) {
2360 printk(KERN_DEBUG
2361 "mac80211_hwsim: device_create failed (%ld)\n",
2362 PTR_ERR(data->dev));
2363 err = -ENOMEM;
2364 goto failed_drvdata;
2365 }
2366 data->dev->driver = &mac80211_hwsim_driver.driver;
2367 err = device_bind_driver(data->dev);
2368 if (err != 0) {
2369 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2370 err);
2371 goto failed_bind;
2372 }
2373
2374 skb_queue_head_init(&data->pending);
2375
2376 SET_IEEE80211_DEV(hw, data->dev);
2377 eth_zero_addr(addr);
2378 addr[0] = 0x02;
2379 addr[3] = idx >> 8;
2380 addr[4] = idx;
2381 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2382 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2383 data->addresses[1].addr[0] |= 0x40;
2384 hw->wiphy->n_addresses = 2;
2385 hw->wiphy->addresses = data->addresses;
2386
2387 data->channels = param->channels;
2388 data->use_chanctx = param->use_chanctx;
2389 data->idx = idx;
2390 data->destroy_on_close = param->destroy_on_close;
2391 if (info)
2392 data->portid = info->snd_portid;
2393
2394 if (data->use_chanctx) {
2395 hw->wiphy->max_scan_ssids = 255;
2396 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2397 hw->wiphy->max_remain_on_channel_duration = 1000;
2398 /* For channels > 1 DFS is not allowed */
2399 hw->wiphy->n_iface_combinations = 1;
2400 hw->wiphy->iface_combinations = &data->if_combination;
2401 if (param->p2p_device)
2402 data->if_combination = hwsim_if_comb_p2p_dev[0];
2403 else
2404 data->if_combination = hwsim_if_comb[0];
2405 data->if_combination.num_different_channels = data->channels;
2406 } else if (param->p2p_device) {
2407 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2408 hw->wiphy->n_iface_combinations =
2409 ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2410 } else {
2411 hw->wiphy->iface_combinations = hwsim_if_comb;
2412 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2413 }
2414
2415 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2416 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2417 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2418
2419 hw->queues = 5;
2420 hw->offchannel_tx_hw_queue = 4;
2421 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2422 BIT(NL80211_IFTYPE_AP) |
2423 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2424 BIT(NL80211_IFTYPE_P2P_GO) |
2425 BIT(NL80211_IFTYPE_ADHOC) |
2426 BIT(NL80211_IFTYPE_MESH_POINT);
2427
2428 if (param->p2p_device)
2429 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2430
2431 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2432 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2433 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2434 ieee80211_hw_set(hw, QUEUE_CONTROL);
2435 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2436 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2437 ieee80211_hw_set(hw, MFP_CAPABLE);
2438 ieee80211_hw_set(hw, SIGNAL_DBM);
2439 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2440 if (rctbl)
2441 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2442
2443 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2444 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2445 WIPHY_FLAG_AP_UAPSD |
2446 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2447 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2448 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2449 NL80211_FEATURE_STATIC_SMPS |
2450 NL80211_FEATURE_DYNAMIC_SMPS |
2451 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2452
2453 /* ask mac80211 to reserve space for magic */
2454 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2455 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2456 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2457
2458 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2459 sizeof(hwsim_channels_2ghz));
2460 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2461 sizeof(hwsim_channels_5ghz));
2462 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2463
2464 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2465 struct ieee80211_supported_band *sband = &data->bands[band];
2466 switch (band) {
2467 case IEEE80211_BAND_2GHZ:
2468 sband->channels = data->channels_2ghz;
2469 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2470 sband->bitrates = data->rates;
2471 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2472 break;
2473 case IEEE80211_BAND_5GHZ:
2474 sband->channels = data->channels_5ghz;
2475 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2476 sband->bitrates = data->rates + 4;
2477 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2478
2479 sband->vht_cap.vht_supported = true;
2480 sband->vht_cap.cap =
2481 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2482 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2483 IEEE80211_VHT_CAP_RXLDPC |
2484 IEEE80211_VHT_CAP_SHORT_GI_80 |
2485 IEEE80211_VHT_CAP_SHORT_GI_160 |
2486 IEEE80211_VHT_CAP_TXSTBC |
2487 IEEE80211_VHT_CAP_RXSTBC_1 |
2488 IEEE80211_VHT_CAP_RXSTBC_2 |
2489 IEEE80211_VHT_CAP_RXSTBC_3 |
2490 IEEE80211_VHT_CAP_RXSTBC_4 |
2491 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2492 sband->vht_cap.vht_mcs.rx_mcs_map =
2493 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2494 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2495 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2496 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2497 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2498 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2499 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2500 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2501 sband->vht_cap.vht_mcs.tx_mcs_map =
2502 sband->vht_cap.vht_mcs.rx_mcs_map;
2503 break;
2504 default:
2505 continue;
2506 }
2507
2508 sband->ht_cap.ht_supported = true;
2509 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2510 IEEE80211_HT_CAP_GRN_FLD |
2511 IEEE80211_HT_CAP_SGI_20 |
2512 IEEE80211_HT_CAP_SGI_40 |
2513 IEEE80211_HT_CAP_DSSSCCK40;
2514 sband->ht_cap.ampdu_factor = 0x3;
2515 sband->ht_cap.ampdu_density = 0x6;
2516 memset(&sband->ht_cap.mcs, 0,
2517 sizeof(sband->ht_cap.mcs));
2518 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2519 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2520 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2521
2522 hw->wiphy->bands[band] = sband;
2523 }
2524
2525 /* By default all radios belong to the first group */
2526 data->group = 1;
2527 mutex_init(&data->mutex);
2528
2529 /* Enable frame retransmissions for lossy channels */
2530 hw->max_rates = 4;
2531 hw->max_rate_tries = 11;
2532
2533 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2534 hw->wiphy->n_vendor_commands =
2535 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2536 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2537 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2538
2539 if (param->reg_strict)
2540 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2541 if (param->regd) {
2542 data->regd = param->regd;
2543 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2544 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2545 /* give the regulatory workqueue a chance to run */
2546 schedule_timeout_interruptible(1);
2547 }
2548
2549 if (param->no_vif)
2550 ieee80211_hw_set(hw, NO_AUTO_VIF);
2551
2552 err = ieee80211_register_hw(hw);
2553 if (err < 0) {
2554 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2555 err);
2556 goto failed_hw;
2557 }
2558
2559 wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2560
2561 if (param->reg_alpha2) {
2562 data->alpha2[0] = param->reg_alpha2[0];
2563 data->alpha2[1] = param->reg_alpha2[1];
2564 regulatory_hint(hw->wiphy, param->reg_alpha2);
2565 }
2566
2567 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2568 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2569 debugfs_create_file("group", 0666, data->debugfs, data,
2570 &hwsim_fops_group);
2571 if (!data->use_chanctx)
2572 debugfs_create_file("dfs_simulate_radar", 0222,
2573 data->debugfs,
2574 data, &hwsim_simulate_radar);
2575
2576 tasklet_hrtimer_init(&data->beacon_timer,
2577 mac80211_hwsim_beacon,
2578 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2579
2580 spin_lock_bh(&hwsim_radio_lock);
2581 list_add_tail(&data->list, &hwsim_radios);
2582 spin_unlock_bh(&hwsim_radio_lock);
2583
2584 if (idx > 0)
2585 hwsim_mcast_new_radio(idx, info, param);
2586
2587 return idx;
2588
2589failed_hw:
2590 device_release_driver(data->dev);
2591failed_bind:
2592 device_unregister(data->dev);
2593failed_drvdata:
2594 ieee80211_free_hw(hw);
2595failed:
2596 return err;
2597}
2598
2599static void hwsim_mcast_del_radio(int id, const char *hwname,
2600 struct genl_info *info)
2601{
2602 struct sk_buff *skb;
2603 void *data;
2604 int ret;
2605
2606 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2607 if (!skb)
2608 return;
2609
2610 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2611 HWSIM_CMD_DEL_RADIO);
2612 if (!data)
2613 goto error;
2614
2615 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2616 if (ret < 0)
2617 goto error;
2618
2619 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2620 hwname);
2621 if (ret < 0)
2622 goto error;
2623
2624 genlmsg_end(skb, data);
2625
2626 hwsim_mcast_config_msg(skb, info);
2627
2628 return;
2629
2630error:
2631 nlmsg_free(skb);
2632}
2633
2634static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2635 const char *hwname,
2636 struct genl_info *info)
2637{
2638 hwsim_mcast_del_radio(data->idx, hwname, info);
2639 debugfs_remove_recursive(data->debugfs);
2640 ieee80211_unregister_hw(data->hw);
2641 device_release_driver(data->dev);
2642 device_unregister(data->dev);
2643 ieee80211_free_hw(data->hw);
2644}
2645
2646static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2647 struct mac80211_hwsim_data *data,
2648 u32 portid, u32 seq,
2649 struct netlink_callback *cb, int flags)
2650{
2651 void *hdr;
2652 struct hwsim_new_radio_params param = { };
2653 int res = -EMSGSIZE;
2654
2655 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2656 HWSIM_CMD_GET_RADIO);
2657 if (!hdr)
2658 return -EMSGSIZE;
2659
2660 if (cb)
2661 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2662
2663 if (data->alpha2[0] && data->alpha2[1])
2664 param.reg_alpha2 = data->alpha2;
2665
2666 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2667 REGULATORY_STRICT_REG);
2668 param.p2p_device = !!(data->hw->wiphy->interface_modes &
2669 BIT(NL80211_IFTYPE_P2P_DEVICE));
2670 param.use_chanctx = data->use_chanctx;
2671 param.regd = data->regd;
2672 param.channels = data->channels;
2673 param.hwname = wiphy_name(data->hw->wiphy);
2674
2675 res = append_radio_msg(skb, data->idx, &param);
2676 if (res < 0)
2677 goto out_err;
2678
2679 genlmsg_end(skb, hdr);
2680 return 0;
2681
2682out_err:
2683 genlmsg_cancel(skb, hdr);
2684 return res;
2685}
2686
2687static void mac80211_hwsim_free(void)
2688{
2689 struct mac80211_hwsim_data *data;
2690
2691 spin_lock_bh(&hwsim_radio_lock);
2692 while ((data = list_first_entry_or_null(&hwsim_radios,
2693 struct mac80211_hwsim_data,
2694 list))) {
2695 list_del(&data->list);
2696 spin_unlock_bh(&hwsim_radio_lock);
2697 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2698 NULL);
2699 spin_lock_bh(&hwsim_radio_lock);
2700 }
2701 spin_unlock_bh(&hwsim_radio_lock);
2702 class_destroy(hwsim_class);
2703}
2704
2705static const struct net_device_ops hwsim_netdev_ops = {
2706 .ndo_start_xmit = hwsim_mon_xmit,
2707 .ndo_change_mtu = eth_change_mtu,
2708 .ndo_set_mac_address = eth_mac_addr,
2709 .ndo_validate_addr = eth_validate_addr,
2710};
2711
2712static void hwsim_mon_setup(struct net_device *dev)
2713{
2714 dev->netdev_ops = &hwsim_netdev_ops;
2715 dev->destructor = free_netdev;
2716 ether_setup(dev);
2717 dev->priv_flags |= IFF_NO_QUEUE;
2718 dev->type = ARPHRD_IEEE80211_RADIOTAP;
2719 eth_zero_addr(dev->dev_addr);
2720 dev->dev_addr[0] = 0x12;
2721}
2722
2723static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2724{
2725 struct mac80211_hwsim_data *data;
2726 bool _found = false;
2727
2728 spin_lock_bh(&hwsim_radio_lock);
2729 list_for_each_entry(data, &hwsim_radios, list) {
2730 if (mac80211_hwsim_addr_match(data, addr)) {
2731 _found = true;
2732 break;
2733 }
2734 }
2735 spin_unlock_bh(&hwsim_radio_lock);
2736
2737 if (!_found)
2738 return NULL;
2739
2740 return data;
2741}
2742
2743static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2744 struct genl_info *info)
2745{
2746
2747 struct ieee80211_hdr *hdr;
2748 struct mac80211_hwsim_data *data2;
2749 struct ieee80211_tx_info *txi;
2750 struct hwsim_tx_rate *tx_attempts;
2751 unsigned long ret_skb_ptr;
2752 struct sk_buff *skb, *tmp;
2753 const u8 *src;
2754 unsigned int hwsim_flags;
2755 int i;
2756 bool found = false;
2757
2758 if (info->snd_portid != wmediumd_portid)
2759 return -EINVAL;
2760
2761 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2762 !info->attrs[HWSIM_ATTR_FLAGS] ||
2763 !info->attrs[HWSIM_ATTR_COOKIE] ||
2764 !info->attrs[HWSIM_ATTR_TX_INFO])
2765 goto out;
2766
2767 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2768 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2769 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2770
2771 data2 = get_hwsim_data_ref_from_addr(src);
2772 if (!data2)
2773 goto out;
2774
2775 /* look for the skb matching the cookie passed back from user */
2776 skb_queue_walk_safe(&data2->pending, skb, tmp) {
2777 if ((unsigned long)skb == ret_skb_ptr) {
2778 skb_unlink(skb, &data2->pending);
2779 found = true;
2780 break;
2781 }
2782 }
2783
2784 /* not found */
2785 if (!found)
2786 goto out;
2787
2788 /* Tx info received because the frame was broadcasted on user space,
2789 so we get all the necessary info: tx attempts and skb control buff */
2790
2791 tx_attempts = (struct hwsim_tx_rate *)nla_data(
2792 info->attrs[HWSIM_ATTR_TX_INFO]);
2793
2794 /* now send back TX status */
2795 txi = IEEE80211_SKB_CB(skb);
2796
2797 ieee80211_tx_info_clear_status(txi);
2798
2799 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2800 txi->status.rates[i].idx = tx_attempts[i].idx;
2801 txi->status.rates[i].count = tx_attempts[i].count;
2802 /*txi->status.rates[i].flags = 0;*/
2803 }
2804
2805 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2806
2807 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2808 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2809 if (skb->len >= 16) {
2810 hdr = (struct ieee80211_hdr *) skb->data;
2811 mac80211_hwsim_monitor_ack(data2->channel,
2812 hdr->addr2);
2813 }
2814 txi->flags |= IEEE80211_TX_STAT_ACK;
2815 }
2816 ieee80211_tx_status_irqsafe(data2->hw, skb);
2817 return 0;
2818out:
2819 return -EINVAL;
2820
2821}
2822
2823static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2824 struct genl_info *info)
2825{
2826 struct mac80211_hwsim_data *data2;
2827 struct ieee80211_rx_status rx_status;
2828 const u8 *dst;
2829 int frame_data_len;
2830 void *frame_data;
2831 struct sk_buff *skb = NULL;
2832
2833 if (info->snd_portid != wmediumd_portid)
2834 return -EINVAL;
2835
2836 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2837 !info->attrs[HWSIM_ATTR_FRAME] ||
2838 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2839 !info->attrs[HWSIM_ATTR_SIGNAL])
2840 goto out;
2841
2842 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2843 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2844 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2845
2846 /* Allocate new skb here */
2847 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2848 if (skb == NULL)
2849 goto err;
2850
2851 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2852 goto err;
2853
2854 /* Copy the data */
2855 memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2856
2857 data2 = get_hwsim_data_ref_from_addr(dst);
2858 if (!data2)
2859 goto out;
2860
2861 /* check if radio is configured properly */
2862
2863 if (data2->idle || !data2->started)
2864 goto out;
2865
2866 /* A frame is received from user space */
2867 memset(&rx_status, 0, sizeof(rx_status));
2868 /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2869 * packets?
2870 */
2871 rx_status.freq = data2->channel->center_freq;
2872 rx_status.band = data2->channel->band;
2873 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2874 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2875
2876 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2877 data2->rx_pkts++;
2878 data2->rx_bytes += skb->len;
2879 ieee80211_rx_irqsafe(data2->hw, skb);
2880
2881 return 0;
2882err:
2883 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2884out:
2885 dev_kfree_skb(skb);
2886 return -EINVAL;
2887}
2888
2889static int hwsim_register_received_nl(struct sk_buff *skb_2,
2890 struct genl_info *info)
2891{
2892 struct mac80211_hwsim_data *data;
2893 int chans = 1;
2894
2895 spin_lock_bh(&hwsim_radio_lock);
2896 list_for_each_entry(data, &hwsim_radios, list)
2897 chans = max(chans, data->channels);
2898 spin_unlock_bh(&hwsim_radio_lock);
2899
2900 /* In the future we should revise the userspace API and allow it
2901 * to set a flag that it does support multi-channel, then we can
2902 * let this pass conditionally on the flag.
2903 * For current userspace, prohibit it since it won't work right.
2904 */
2905 if (chans > 1)
2906 return -EOPNOTSUPP;
2907
2908 if (wmediumd_portid)
2909 return -EBUSY;
2910
2911 wmediumd_portid = info->snd_portid;
2912
2913 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2914 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2915
2916 return 0;
2917}
2918
2919static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2920{
2921 struct hwsim_new_radio_params param = { 0 };
2922
2923 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2924 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2925 param.channels = channels;
2926 param.destroy_on_close =
2927 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2928
2929 if (info->attrs[HWSIM_ATTR_CHANNELS])
2930 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2931
2932 if (info->attrs[HWSIM_ATTR_NO_VIF])
2933 param.no_vif = true;
2934
2935 if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2936 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2937
2938 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2939 param.use_chanctx = true;
2940 else
2941 param.use_chanctx = (param.channels > 1);
2942
2943 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2944 param.reg_alpha2 =
2945 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2946
2947 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2948 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2949
2950 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2951 return -EINVAL;
2952 param.regd = hwsim_world_regdom_custom[idx];
2953 }
2954
2955 return mac80211_hwsim_new_radio(info, &param);
2956}
2957
2958static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2959{
2960 struct mac80211_hwsim_data *data;
2961 s64 idx = -1;
2962 const char *hwname = NULL;
2963
2964 if (info->attrs[HWSIM_ATTR_RADIO_ID])
2965 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2966 else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2967 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2968 else
2969 return -EINVAL;
2970
2971 spin_lock_bh(&hwsim_radio_lock);
2972 list_for_each_entry(data, &hwsim_radios, list) {
2973 if (idx >= 0) {
2974 if (data->idx != idx)
2975 continue;
2976 } else {
2977 if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
2978 continue;
2979 }
2980
2981 list_del(&data->list);
2982 spin_unlock_bh(&hwsim_radio_lock);
2983 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2984 info);
2985 return 0;
2986 }
2987 spin_unlock_bh(&hwsim_radio_lock);
2988
2989 return -ENODEV;
2990}
2991
2992static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
2993{
2994 struct mac80211_hwsim_data *data;
2995 struct sk_buff *skb;
2996 int idx, res = -ENODEV;
2997
2998 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2999 return -EINVAL;
3000 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3001
3002 spin_lock_bh(&hwsim_radio_lock);
3003 list_for_each_entry(data, &hwsim_radios, list) {
3004 if (data->idx != idx)
3005 continue;
3006
3007 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3008 if (!skb) {
3009 res = -ENOMEM;
3010 goto out_err;
3011 }
3012
3013 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3014 info->snd_seq, NULL, 0);
3015 if (res < 0) {
3016 nlmsg_free(skb);
3017 goto out_err;
3018 }
3019
3020 genlmsg_reply(skb, info);
3021 break;
3022 }
3023
3024out_err:
3025 spin_unlock_bh(&hwsim_radio_lock);
3026
3027 return res;
3028}
3029
3030static int hwsim_dump_radio_nl(struct sk_buff *skb,
3031 struct netlink_callback *cb)
3032{
3033 int idx = cb->args[0];
3034 struct mac80211_hwsim_data *data = NULL;
3035 int res;
3036
3037 spin_lock_bh(&hwsim_radio_lock);
3038
3039 if (idx == hwsim_radio_idx)
3040 goto done;
3041
3042 list_for_each_entry(data, &hwsim_radios, list) {
3043 if (data->idx < idx)
3044 continue;
3045
3046 res = mac80211_hwsim_get_radio(skb, data,
3047 NETLINK_CB(cb->skb).portid,
3048 cb->nlh->nlmsg_seq, cb,
3049 NLM_F_MULTI);
3050 if (res < 0)
3051 break;
3052
3053 idx = data->idx + 1;
3054 }
3055
3056 cb->args[0] = idx;
3057
3058done:
3059 spin_unlock_bh(&hwsim_radio_lock);
3060 return skb->len;
3061}
3062
3063/* Generic Netlink operations array */
3064static const struct genl_ops hwsim_ops[] = {
3065 {
3066 .cmd = HWSIM_CMD_REGISTER,
3067 .policy = hwsim_genl_policy,
3068 .doit = hwsim_register_received_nl,
3069 .flags = GENL_ADMIN_PERM,
3070 },
3071 {
3072 .cmd = HWSIM_CMD_FRAME,
3073 .policy = hwsim_genl_policy,
3074 .doit = hwsim_cloned_frame_received_nl,
3075 },
3076 {
3077 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3078 .policy = hwsim_genl_policy,
3079 .doit = hwsim_tx_info_frame_received_nl,
3080 },
3081 {
3082 .cmd = HWSIM_CMD_NEW_RADIO,
3083 .policy = hwsim_genl_policy,
3084 .doit = hwsim_new_radio_nl,
3085 .flags = GENL_ADMIN_PERM,
3086 },
3087 {
3088 .cmd = HWSIM_CMD_DEL_RADIO,
3089 .policy = hwsim_genl_policy,
3090 .doit = hwsim_del_radio_nl,
3091 .flags = GENL_ADMIN_PERM,
3092 },
3093 {
3094 .cmd = HWSIM_CMD_GET_RADIO,
3095 .policy = hwsim_genl_policy,
3096 .doit = hwsim_get_radio_nl,
3097 .dumpit = hwsim_dump_radio_nl,
3098 },
3099};
3100
3101static void destroy_radio(struct work_struct *work)
3102{
3103 struct mac80211_hwsim_data *data =
3104 container_of(work, struct mac80211_hwsim_data, destroy_work);
3105
3106 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3107}
3108
3109static void remove_user_radios(u32 portid)
3110{
3111 struct mac80211_hwsim_data *entry, *tmp;
3112
3113 spin_lock_bh(&hwsim_radio_lock);
3114 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3115 if (entry->destroy_on_close && entry->portid == portid) {
3116 list_del(&entry->list);
3117 INIT_WORK(&entry->destroy_work, destroy_radio);
3118 schedule_work(&entry->destroy_work);
3119 }
3120 }
3121 spin_unlock_bh(&hwsim_radio_lock);
3122}
3123
3124static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3125 unsigned long state,
3126 void *_notify)
3127{
3128 struct netlink_notify *notify = _notify;
3129
3130 if (state != NETLINK_URELEASE)
3131 return NOTIFY_DONE;
3132
3133 remove_user_radios(notify->portid);
3134
3135 if (notify->portid == wmediumd_portid) {
3136 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3137 " socket, switching to perfect channel medium\n");
3138 wmediumd_portid = 0;
3139 }
3140 return NOTIFY_DONE;
3141
3142}
3143
3144static struct notifier_block hwsim_netlink_notifier = {
3145 .notifier_call = mac80211_hwsim_netlink_notify,
3146};
3147
3148static int hwsim_init_netlink(void)
3149{
3150 int rc;
3151
3152 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3153
3154 rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3155 hwsim_ops,
3156 hwsim_mcgrps);
3157 if (rc)
3158 goto failure;
3159
3160 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3161 if (rc) {
3162 genl_unregister_family(&hwsim_genl_family);
3163 goto failure;
3164 }
3165
3166 return 0;
3167
3168failure:
3169 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3170 return -EINVAL;
3171}
3172
3173static void hwsim_exit_netlink(void)
3174{
3175 /* unregister the notifier */
3176 netlink_unregister_notifier(&hwsim_netlink_notifier);
3177 /* unregister the family */
3178 genl_unregister_family(&hwsim_genl_family);
3179}
3180
3181static int __init init_mac80211_hwsim(void)
3182{
3183 int i, err;
3184
3185 if (radios < 0 || radios > 100)
3186 return -EINVAL;
3187
3188 if (channels < 1)
3189 return -EINVAL;
3190
3191 mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3192 mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3193 mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3194 mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3195 mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3196 mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3197 mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3198 mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3199 mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3200 mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3201 mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3202 mac80211_hwsim_assign_vif_chanctx;
3203 mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3204 mac80211_hwsim_unassign_vif_chanctx;
3205
3206 spin_lock_init(&hwsim_radio_lock);
3207 INIT_LIST_HEAD(&hwsim_radios);
3208
3209 err = platform_driver_register(&mac80211_hwsim_driver);
3210 if (err)
3211 return err;
3212
3213 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3214 if (IS_ERR(hwsim_class)) {
3215 err = PTR_ERR(hwsim_class);
3216 goto out_unregister_driver;
3217 }
3218
3219 err = hwsim_init_netlink();
3220 if (err < 0)
3221 goto out_unregister_driver;
3222
3223 for (i = 0; i < radios; i++) {
3224 struct hwsim_new_radio_params param = { 0 };
3225
3226 param.channels = channels;
3227
3228 switch (regtest) {
3229 case HWSIM_REGTEST_DIFF_COUNTRY:
3230 if (i < ARRAY_SIZE(hwsim_alpha2s))
3231 param.reg_alpha2 = hwsim_alpha2s[i];
3232 break;
3233 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3234 if (!i)
3235 param.reg_alpha2 = hwsim_alpha2s[0];
3236 break;
3237 case HWSIM_REGTEST_STRICT_ALL:
3238 param.reg_strict = true;
3239 case HWSIM_REGTEST_DRIVER_REG_ALL:
3240 param.reg_alpha2 = hwsim_alpha2s[0];
3241 break;
3242 case HWSIM_REGTEST_WORLD_ROAM:
3243 if (i == 0)
3244 param.regd = &hwsim_world_regdom_custom_01;
3245 break;
3246 case HWSIM_REGTEST_CUSTOM_WORLD:
3247 param.regd = &hwsim_world_regdom_custom_01;
3248 break;
3249 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3250 if (i == 0)
3251 param.regd = &hwsim_world_regdom_custom_01;
3252 else if (i == 1)
3253 param.regd = &hwsim_world_regdom_custom_02;
3254 break;
3255 case HWSIM_REGTEST_STRICT_FOLLOW:
3256 if (i == 0) {
3257 param.reg_strict = true;
3258 param.reg_alpha2 = hwsim_alpha2s[0];
3259 }
3260 break;
3261 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3262 if (i == 0) {
3263 param.reg_strict = true;
3264 param.reg_alpha2 = hwsim_alpha2s[0];
3265 } else if (i == 1) {
3266 param.reg_alpha2 = hwsim_alpha2s[1];
3267 }
3268 break;
3269 case HWSIM_REGTEST_ALL:
3270 switch (i) {
3271 case 0:
3272 param.regd = &hwsim_world_regdom_custom_01;
3273 break;
3274 case 1:
3275 param.regd = &hwsim_world_regdom_custom_02;
3276 break;
3277 case 2:
3278 param.reg_alpha2 = hwsim_alpha2s[0];
3279 break;
3280 case 3:
3281 param.reg_alpha2 = hwsim_alpha2s[1];
3282 break;
3283 case 4:
3284 param.reg_strict = true;
3285 param.reg_alpha2 = hwsim_alpha2s[2];
3286 break;
3287 }
3288 break;
3289 default:
3290 break;
3291 }
3292
3293 param.p2p_device = support_p2p_device;
3294 param.use_chanctx = channels > 1;
3295
3296 err = mac80211_hwsim_new_radio(NULL, &param);
3297 if (err < 0)
3298 goto out_free_radios;
3299 }
3300
3301 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3302 hwsim_mon_setup);
3303 if (hwsim_mon == NULL) {
3304 err = -ENOMEM;
3305 goto out_free_radios;
3306 }
3307
3308 rtnl_lock();
3309 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3310 if (err < 0) {
3311 rtnl_unlock();
3312 goto out_free_radios;
3313 }
3314
3315 err = register_netdevice(hwsim_mon);
3316 if (err < 0) {
3317 rtnl_unlock();
3318 goto out_free_mon;
3319 }
3320 rtnl_unlock();
3321
3322 return 0;
3323
3324out_free_mon:
3325 free_netdev(hwsim_mon);
3326out_free_radios:
3327 mac80211_hwsim_free();
3328out_unregister_driver:
3329 platform_driver_unregister(&mac80211_hwsim_driver);
3330 return err;
3331}
3332module_init(init_mac80211_hwsim);
3333
3334static void __exit exit_mac80211_hwsim(void)
3335{
3336 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3337
3338 hwsim_exit_netlink();
3339
3340 mac80211_hwsim_free();
3341 unregister_netdev(hwsim_mon);
3342 platform_driver_unregister(&mac80211_hwsim_driver);
3343}
3344module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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