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