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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/debugfs.h>
29#include <net/genetlink.h>
30#include "mac80211_hwsim.h"
31
32#define WARN_QUEUE 100
33#define MAX_QUEUE 200
34
35MODULE_AUTHOR("Jouni Malinen");
36MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
37MODULE_LICENSE("GPL");
38
39int wmediumd_pid;
40static int radios = 2;
41module_param(radios, int, 0444);
42MODULE_PARM_DESC(radios, "Number of simulated radios");
43
44static bool fake_hw_scan;
45module_param(fake_hw_scan, bool, 0444);
46MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
47
48/**
49 * enum hwsim_regtest - the type of regulatory tests we offer
50 *
51 * These are the different values you can use for the regtest
52 * module parameter. This is useful to help test world roaming
53 * and the driver regulatory_hint() call and combinations of these.
54 * If you want to do specific alpha2 regulatory domain tests simply
55 * use the userspace regulatory request as that will be respected as
56 * well without the need of this module parameter. This is designed
57 * only for testing the driver regulatory request, world roaming
58 * and all possible combinations.
59 *
60 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
61 * this is the default value.
62 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
63 * hint, only one driver regulatory hint will be sent as such the
64 * secondary radios are expected to follow.
65 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
66 * request with all radios reporting the same regulatory domain.
67 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
68 * different regulatory domains requests. Expected behaviour is for
69 * an intersection to occur but each device will still use their
70 * respective regulatory requested domains. Subsequent radios will
71 * use the resulting intersection.
72 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
73 * this by using a custom beacon-capable regulatory domain for the first
74 * radio. All other device world roam.
75 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
76 * domain requests. All radios will adhere to this custom world regulatory
77 * domain.
78 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
79 * domain requests. The first radio will adhere to the first custom world
80 * regulatory domain, the second one to the second custom world regulatory
81 * domain. All other devices will world roam.
82 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
83 * settings, only the first radio will send a regulatory domain request
84 * and use strict settings. The rest of the radios are expected to follow.
85 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
86 * settings. All radios will adhere to this.
87 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
88 * domain settings, combined with secondary driver regulatory domain
89 * settings. The first radio will get a strict regulatory domain setting
90 * using the first driver regulatory request and the second radio will use
91 * non-strict settings using the second driver regulatory request. All
92 * other devices should follow the intersection created between the
93 * first two.
94 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
95 * at least 6 radios for a complete test. We will test in this order:
96 * 1 - driver custom world regulatory domain
97 * 2 - second custom world regulatory domain
98 * 3 - first driver regulatory domain request
99 * 4 - second driver regulatory domain request
100 * 5 - strict regulatory domain settings using the third driver regulatory
101 * domain request
102 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
103 * regulatory requests.
104 */
105enum hwsim_regtest {
106 HWSIM_REGTEST_DISABLED = 0,
107 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
108 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
109 HWSIM_REGTEST_DIFF_COUNTRY = 3,
110 HWSIM_REGTEST_WORLD_ROAM = 4,
111 HWSIM_REGTEST_CUSTOM_WORLD = 5,
112 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
113 HWSIM_REGTEST_STRICT_FOLLOW = 7,
114 HWSIM_REGTEST_STRICT_ALL = 8,
115 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
116 HWSIM_REGTEST_ALL = 10,
117};
118
119/* Set to one of the HWSIM_REGTEST_* values above */
120static int regtest = HWSIM_REGTEST_DISABLED;
121module_param(regtest, int, 0444);
122MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
123
124static const char *hwsim_alpha2s[] = {
125 "FI",
126 "AL",
127 "US",
128 "DE",
129 "JP",
130 "AL",
131};
132
133static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
134 .n_reg_rules = 4,
135 .alpha2 = "99",
136 .reg_rules = {
137 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
138 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
139 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
140 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
141 }
142};
143
144static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
145 .n_reg_rules = 2,
146 .alpha2 = "99",
147 .reg_rules = {
148 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
149 REG_RULE(5725-10, 5850+10, 40, 0, 30,
150 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
151 }
152};
153
154struct hwsim_vif_priv {
155 u32 magic;
156 u8 bssid[ETH_ALEN];
157 bool assoc;
158 u16 aid;
159};
160
161#define HWSIM_VIF_MAGIC 0x69537748
162
163static inline void hwsim_check_magic(struct ieee80211_vif *vif)
164{
165 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
166 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
167}
168
169static inline void hwsim_set_magic(struct ieee80211_vif *vif)
170{
171 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
172 vp->magic = HWSIM_VIF_MAGIC;
173}
174
175static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
176{
177 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
178 vp->magic = 0;
179}
180
181struct hwsim_sta_priv {
182 u32 magic;
183};
184
185#define HWSIM_STA_MAGIC 0x6d537748
186
187static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
188{
189 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
190 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
191}
192
193static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
194{
195 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
196 sp->magic = HWSIM_STA_MAGIC;
197}
198
199static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
200{
201 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
202 sp->magic = 0;
203}
204
205static struct class *hwsim_class;
206
207static struct net_device *hwsim_mon; /* global monitor netdev */
208
209#define CHAN2G(_freq) { \
210 .band = IEEE80211_BAND_2GHZ, \
211 .center_freq = (_freq), \
212 .hw_value = (_freq), \
213 .max_power = 20, \
214}
215
216#define CHAN5G(_freq) { \
217 .band = IEEE80211_BAND_5GHZ, \
218 .center_freq = (_freq), \
219 .hw_value = (_freq), \
220 .max_power = 20, \
221}
222
223static const struct ieee80211_channel hwsim_channels_2ghz[] = {
224 CHAN2G(2412), /* Channel 1 */
225 CHAN2G(2417), /* Channel 2 */
226 CHAN2G(2422), /* Channel 3 */
227 CHAN2G(2427), /* Channel 4 */
228 CHAN2G(2432), /* Channel 5 */
229 CHAN2G(2437), /* Channel 6 */
230 CHAN2G(2442), /* Channel 7 */
231 CHAN2G(2447), /* Channel 8 */
232 CHAN2G(2452), /* Channel 9 */
233 CHAN2G(2457), /* Channel 10 */
234 CHAN2G(2462), /* Channel 11 */
235 CHAN2G(2467), /* Channel 12 */
236 CHAN2G(2472), /* Channel 13 */
237 CHAN2G(2484), /* Channel 14 */
238};
239
240static const struct ieee80211_channel hwsim_channels_5ghz[] = {
241 CHAN5G(5180), /* Channel 36 */
242 CHAN5G(5200), /* Channel 40 */
243 CHAN5G(5220), /* Channel 44 */
244 CHAN5G(5240), /* Channel 48 */
245
246 CHAN5G(5260), /* Channel 52 */
247 CHAN5G(5280), /* Channel 56 */
248 CHAN5G(5300), /* Channel 60 */
249 CHAN5G(5320), /* Channel 64 */
250
251 CHAN5G(5500), /* Channel 100 */
252 CHAN5G(5520), /* Channel 104 */
253 CHAN5G(5540), /* Channel 108 */
254 CHAN5G(5560), /* Channel 112 */
255 CHAN5G(5580), /* Channel 116 */
256 CHAN5G(5600), /* Channel 120 */
257 CHAN5G(5620), /* Channel 124 */
258 CHAN5G(5640), /* Channel 128 */
259 CHAN5G(5660), /* Channel 132 */
260 CHAN5G(5680), /* Channel 136 */
261 CHAN5G(5700), /* Channel 140 */
262
263 CHAN5G(5745), /* Channel 149 */
264 CHAN5G(5765), /* Channel 153 */
265 CHAN5G(5785), /* Channel 157 */
266 CHAN5G(5805), /* Channel 161 */
267 CHAN5G(5825), /* Channel 165 */
268};
269
270static const struct ieee80211_rate hwsim_rates[] = {
271 { .bitrate = 10 },
272 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
273 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
274 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
275 { .bitrate = 60 },
276 { .bitrate = 90 },
277 { .bitrate = 120 },
278 { .bitrate = 180 },
279 { .bitrate = 240 },
280 { .bitrate = 360 },
281 { .bitrate = 480 },
282 { .bitrate = 540 }
283};
284
285static spinlock_t hwsim_radio_lock;
286static struct list_head hwsim_radios;
287
288struct mac80211_hwsim_data {
289 struct list_head list;
290 struct ieee80211_hw *hw;
291 struct device *dev;
292 struct ieee80211_supported_band bands[2];
293 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
294 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
295 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
296
297 struct mac_address addresses[2];
298
299 struct ieee80211_channel *channel;
300 unsigned long beacon_int; /* in jiffies unit */
301 unsigned int rx_filter;
302 bool started, idle, scanning;
303 struct mutex mutex;
304 struct timer_list beacon_timer;
305 enum ps_mode {
306 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
307 } ps;
308 bool ps_poll_pending;
309 struct dentry *debugfs;
310 struct dentry *debugfs_ps;
311
312 struct sk_buff_head pending; /* packets pending */
313 /*
314 * Only radios in the same group can communicate together (the
315 * channel has to match too). Each bit represents a group. A
316 * radio can be in more then one group.
317 */
318 u64 group;
319 struct dentry *debugfs_group;
320
321 int power_level;
322};
323
324
325struct hwsim_radiotap_hdr {
326 struct ieee80211_radiotap_header hdr;
327 u8 rt_flags;
328 u8 rt_rate;
329 __le16 rt_channel;
330 __le16 rt_chbitmask;
331} __packed;
332
333/* MAC80211_HWSIM netlinf family */
334static struct genl_family hwsim_genl_family = {
335 .id = GENL_ID_GENERATE,
336 .hdrsize = 0,
337 .name = "MAC80211_HWSIM",
338 .version = 1,
339 .maxattr = HWSIM_ATTR_MAX,
340};
341
342/* MAC80211_HWSIM netlink policy */
343
344static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
345 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
346 .len = 6*sizeof(u8) },
347 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
348 .len = 6*sizeof(u8) },
349 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
350 .len = IEEE80211_MAX_DATA_LEN },
351 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
352 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
353 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
354 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
355 .len = IEEE80211_TX_MAX_RATES*sizeof(
356 struct hwsim_tx_rate)},
357 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
358};
359
360static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
361 struct net_device *dev)
362{
363 /* TODO: allow packet injection */
364 dev_kfree_skb(skb);
365 return NETDEV_TX_OK;
366}
367
368
369static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
370 struct sk_buff *tx_skb)
371{
372 struct mac80211_hwsim_data *data = hw->priv;
373 struct sk_buff *skb;
374 struct hwsim_radiotap_hdr *hdr;
375 u16 flags;
376 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
377 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
378
379 if (!netif_running(hwsim_mon))
380 return;
381
382 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
383 if (skb == NULL)
384 return;
385
386 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
387 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
388 hdr->hdr.it_pad = 0;
389 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
390 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
391 (1 << IEEE80211_RADIOTAP_RATE) |
392 (1 << IEEE80211_RADIOTAP_CHANNEL));
393 hdr->rt_flags = 0;
394 hdr->rt_rate = txrate->bitrate / 5;
395 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
396 flags = IEEE80211_CHAN_2GHZ;
397 if (txrate->flags & IEEE80211_RATE_ERP_G)
398 flags |= IEEE80211_CHAN_OFDM;
399 else
400 flags |= IEEE80211_CHAN_CCK;
401 hdr->rt_chbitmask = cpu_to_le16(flags);
402
403 skb->dev = hwsim_mon;
404 skb_set_mac_header(skb, 0);
405 skb->ip_summed = CHECKSUM_UNNECESSARY;
406 skb->pkt_type = PACKET_OTHERHOST;
407 skb->protocol = htons(ETH_P_802_2);
408 memset(skb->cb, 0, sizeof(skb->cb));
409 netif_rx(skb);
410}
411
412
413static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
414{
415 struct mac80211_hwsim_data *data = hw->priv;
416 struct sk_buff *skb;
417 struct hwsim_radiotap_hdr *hdr;
418 u16 flags;
419 struct ieee80211_hdr *hdr11;
420
421 if (!netif_running(hwsim_mon))
422 return;
423
424 skb = dev_alloc_skb(100);
425 if (skb == NULL)
426 return;
427
428 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
429 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
430 hdr->hdr.it_pad = 0;
431 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
432 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
433 (1 << IEEE80211_RADIOTAP_CHANNEL));
434 hdr->rt_flags = 0;
435 hdr->rt_rate = 0;
436 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
437 flags = IEEE80211_CHAN_2GHZ;
438 hdr->rt_chbitmask = cpu_to_le16(flags);
439
440 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
441 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
442 IEEE80211_STYPE_ACK);
443 hdr11->duration_id = cpu_to_le16(0);
444 memcpy(hdr11->addr1, addr, ETH_ALEN);
445
446 skb->dev = hwsim_mon;
447 skb_set_mac_header(skb, 0);
448 skb->ip_summed = CHECKSUM_UNNECESSARY;
449 skb->pkt_type = PACKET_OTHERHOST;
450 skb->protocol = htons(ETH_P_802_2);
451 memset(skb->cb, 0, sizeof(skb->cb));
452 netif_rx(skb);
453}
454
455
456static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
457 struct sk_buff *skb)
458{
459 switch (data->ps) {
460 case PS_DISABLED:
461 return true;
462 case PS_ENABLED:
463 return false;
464 case PS_AUTO_POLL:
465 /* TODO: accept (some) Beacons by default and other frames only
466 * if pending PS-Poll has been sent */
467 return true;
468 case PS_MANUAL_POLL:
469 /* Allow unicast frames to own address if there is a pending
470 * PS-Poll */
471 if (data->ps_poll_pending &&
472 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
473 ETH_ALEN) == 0) {
474 data->ps_poll_pending = false;
475 return true;
476 }
477 return false;
478 }
479
480 return true;
481}
482
483
484struct mac80211_hwsim_addr_match_data {
485 bool ret;
486 const u8 *addr;
487};
488
489static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
490 struct ieee80211_vif *vif)
491{
492 struct mac80211_hwsim_addr_match_data *md = data;
493 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
494 md->ret = true;
495}
496
497
498static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
499 const u8 *addr)
500{
501 struct mac80211_hwsim_addr_match_data md;
502
503 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
504 return true;
505
506 md.ret = false;
507 md.addr = addr;
508 ieee80211_iterate_active_interfaces_atomic(data->hw,
509 mac80211_hwsim_addr_iter,
510 &md);
511
512 return md.ret;
513}
514
515static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
516 struct sk_buff *my_skb,
517 int dst_pid)
518{
519 struct sk_buff *skb;
520 struct mac80211_hwsim_data *data = hw->priv;
521 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
522 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
523 void *msg_head;
524 unsigned int hwsim_flags = 0;
525 int i;
526 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
527
528 if (data->idle) {
529 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
530 dev_kfree_skb(my_skb);
531 return;
532 }
533
534 if (data->ps != PS_DISABLED)
535 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
536 /* If the queue contains MAX_QUEUE skb's drop some */
537 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
538 /* Droping until WARN_QUEUE level */
539 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
540 skb_dequeue(&data->pending);
541 }
542
543 skb = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
544 if (skb == NULL)
545 goto nla_put_failure;
546
547 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
548 HWSIM_CMD_FRAME);
549 if (msg_head == NULL) {
550 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
551 goto nla_put_failure;
552 }
553
554 NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
555 sizeof(struct mac_address), data->addresses[1].addr);
556
557 /* We get the skb->data */
558 NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
559
560 /* We get the flags for this transmission, and we translate them to
561 wmediumd flags */
562
563 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
564 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
565
566 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
567 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
568
569 NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
570
571 /* We get the tx control (rate and retries) info*/
572
573 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
574 tx_attempts[i].idx = info->status.rates[i].idx;
575 tx_attempts[i].count = info->status.rates[i].count;
576 }
577
578 NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
579 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
580 tx_attempts);
581
582 /* We create a cookie to identify this skb */
583 NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
584
585 genlmsg_end(skb, msg_head);
586 genlmsg_unicast(&init_net, skb, dst_pid);
587
588 /* Enqueue the packet */
589 skb_queue_tail(&data->pending, my_skb);
590 return;
591
592nla_put_failure:
593 printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
594}
595
596static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
597 struct sk_buff *skb)
598{
599 struct mac80211_hwsim_data *data = hw->priv, *data2;
600 bool ack = false;
601 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
602 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
603 struct ieee80211_rx_status rx_status;
604
605 if (data->idle) {
606 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
607 return false;
608 }
609
610 memset(&rx_status, 0, sizeof(rx_status));
611 /* TODO: set mactime */
612 rx_status.freq = data->channel->center_freq;
613 rx_status.band = data->channel->band;
614 rx_status.rate_idx = info->control.rates[0].idx;
615 /* TODO: simulate real signal strength (and optional packet loss) */
616 rx_status.signal = data->power_level - 50;
617
618 if (data->ps != PS_DISABLED)
619 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
620
621 /* release the skb's source info */
622 skb_orphan(skb);
623 skb_dst_drop(skb);
624 skb->mark = 0;
625 secpath_reset(skb);
626 nf_reset(skb);
627
628 /* Copy skb to all enabled radios that are on the current frequency */
629 spin_lock(&hwsim_radio_lock);
630 list_for_each_entry(data2, &hwsim_radios, list) {
631 struct sk_buff *nskb;
632
633 if (data == data2)
634 continue;
635
636 if (data2->idle || !data2->started ||
637 !hwsim_ps_rx_ok(data2, skb) ||
638 !data->channel || !data2->channel ||
639 data->channel->center_freq != data2->channel->center_freq ||
640 !(data->group & data2->group))
641 continue;
642
643 nskb = skb_copy(skb, GFP_ATOMIC);
644 if (nskb == NULL)
645 continue;
646
647 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
648 ack = true;
649 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
650 ieee80211_rx_irqsafe(data2->hw, nskb);
651 }
652 spin_unlock(&hwsim_radio_lock);
653
654 return ack;
655}
656
657static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
658{
659 bool ack;
660 struct ieee80211_tx_info *txi;
661 int _pid;
662
663 mac80211_hwsim_monitor_rx(hw, skb);
664
665 if (skb->len < 10) {
666 /* Should not happen; just a sanity check for addr1 use */
667 dev_kfree_skb(skb);
668 return;
669 }
670
671 /* wmediumd mode check */
672 _pid = wmediumd_pid;
673
674 if (_pid)
675 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
676
677 /* NO wmediumd detected, perfect medium simulation */
678 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
679
680 if (ack && skb->len >= 16) {
681 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
682 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
683 }
684
685 txi = IEEE80211_SKB_CB(skb);
686
687 if (txi->control.vif)
688 hwsim_check_magic(txi->control.vif);
689 if (txi->control.sta)
690 hwsim_check_sta_magic(txi->control.sta);
691
692 ieee80211_tx_info_clear_status(txi);
693 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
694 txi->flags |= IEEE80211_TX_STAT_ACK;
695 ieee80211_tx_status_irqsafe(hw, skb);
696}
697
698
699static int mac80211_hwsim_start(struct ieee80211_hw *hw)
700{
701 struct mac80211_hwsim_data *data = hw->priv;
702 wiphy_debug(hw->wiphy, "%s\n", __func__);
703 data->started = 1;
704 return 0;
705}
706
707
708static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
709{
710 struct mac80211_hwsim_data *data = hw->priv;
711 data->started = 0;
712 del_timer(&data->beacon_timer);
713 wiphy_debug(hw->wiphy, "%s\n", __func__);
714}
715
716
717static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
718 struct ieee80211_vif *vif)
719{
720 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
721 __func__, ieee80211_vif_type_p2p(vif),
722 vif->addr);
723 hwsim_set_magic(vif);
724 return 0;
725}
726
727
728static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
729 struct ieee80211_vif *vif,
730 enum nl80211_iftype newtype,
731 bool newp2p)
732{
733 newtype = ieee80211_iftype_p2p(newtype, newp2p);
734 wiphy_debug(hw->wiphy,
735 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
736 __func__, ieee80211_vif_type_p2p(vif),
737 newtype, vif->addr);
738 hwsim_check_magic(vif);
739
740 return 0;
741}
742
743static void mac80211_hwsim_remove_interface(
744 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
745{
746 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
747 __func__, ieee80211_vif_type_p2p(vif),
748 vif->addr);
749 hwsim_check_magic(vif);
750 hwsim_clear_magic(vif);
751}
752
753
754static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
755 struct ieee80211_vif *vif)
756{
757 struct ieee80211_hw *hw = arg;
758 struct sk_buff *skb;
759 struct ieee80211_tx_info *info;
760 int _pid;
761
762 hwsim_check_magic(vif);
763
764 if (vif->type != NL80211_IFTYPE_AP &&
765 vif->type != NL80211_IFTYPE_MESH_POINT &&
766 vif->type != NL80211_IFTYPE_ADHOC)
767 return;
768
769 skb = ieee80211_beacon_get(hw, vif);
770 if (skb == NULL)
771 return;
772 info = IEEE80211_SKB_CB(skb);
773
774 mac80211_hwsim_monitor_rx(hw, skb);
775
776 /* wmediumd mode check */
777 _pid = wmediumd_pid;
778
779 if (_pid)
780 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
781
782 mac80211_hwsim_tx_frame_no_nl(hw, skb);
783 dev_kfree_skb(skb);
784}
785
786
787static void mac80211_hwsim_beacon(unsigned long arg)
788{
789 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
790 struct mac80211_hwsim_data *data = hw->priv;
791
792 if (!data->started)
793 return;
794
795 ieee80211_iterate_active_interfaces_atomic(
796 hw, mac80211_hwsim_beacon_tx, hw);
797
798 data->beacon_timer.expires = jiffies + data->beacon_int;
799 add_timer(&data->beacon_timer);
800}
801
802static const char *hwsim_chantypes[] = {
803 [NL80211_CHAN_NO_HT] = "noht",
804 [NL80211_CHAN_HT20] = "ht20",
805 [NL80211_CHAN_HT40MINUS] = "ht40-",
806 [NL80211_CHAN_HT40PLUS] = "ht40+",
807};
808
809static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
810{
811 struct mac80211_hwsim_data *data = hw->priv;
812 struct ieee80211_conf *conf = &hw->conf;
813 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
814 [IEEE80211_SMPS_AUTOMATIC] = "auto",
815 [IEEE80211_SMPS_OFF] = "off",
816 [IEEE80211_SMPS_STATIC] = "static",
817 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
818 };
819
820 wiphy_debug(hw->wiphy,
821 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
822 __func__,
823 conf->channel->center_freq,
824 hwsim_chantypes[conf->channel_type],
825 !!(conf->flags & IEEE80211_CONF_IDLE),
826 !!(conf->flags & IEEE80211_CONF_PS),
827 smps_modes[conf->smps_mode]);
828
829 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
830
831 data->channel = conf->channel;
832 data->power_level = conf->power_level;
833 if (!data->started || !data->beacon_int)
834 del_timer(&data->beacon_timer);
835 else
836 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
837
838 return 0;
839}
840
841
842static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
843 unsigned int changed_flags,
844 unsigned int *total_flags,u64 multicast)
845{
846 struct mac80211_hwsim_data *data = hw->priv;
847
848 wiphy_debug(hw->wiphy, "%s\n", __func__);
849
850 data->rx_filter = 0;
851 if (*total_flags & FIF_PROMISC_IN_BSS)
852 data->rx_filter |= FIF_PROMISC_IN_BSS;
853 if (*total_flags & FIF_ALLMULTI)
854 data->rx_filter |= FIF_ALLMULTI;
855
856 *total_flags = data->rx_filter;
857}
858
859static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
860 struct ieee80211_vif *vif,
861 struct ieee80211_bss_conf *info,
862 u32 changed)
863{
864 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
865 struct mac80211_hwsim_data *data = hw->priv;
866
867 hwsim_check_magic(vif);
868
869 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
870
871 if (changed & BSS_CHANGED_BSSID) {
872 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
873 __func__, info->bssid);
874 memcpy(vp->bssid, info->bssid, ETH_ALEN);
875 }
876
877 if (changed & BSS_CHANGED_ASSOC) {
878 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
879 info->assoc, info->aid);
880 vp->assoc = info->assoc;
881 vp->aid = info->aid;
882 }
883
884 if (changed & BSS_CHANGED_BEACON_INT) {
885 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
886 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
887 if (WARN_ON(!data->beacon_int))
888 data->beacon_int = 1;
889 if (data->started)
890 mod_timer(&data->beacon_timer,
891 jiffies + data->beacon_int);
892 }
893
894 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
895 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
896 info->use_cts_prot);
897 }
898
899 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
900 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
901 info->use_short_preamble);
902 }
903
904 if (changed & BSS_CHANGED_ERP_SLOT) {
905 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
906 }
907
908 if (changed & BSS_CHANGED_HT) {
909 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
910 info->ht_operation_mode,
911 hwsim_chantypes[info->channel_type]);
912 }
913
914 if (changed & BSS_CHANGED_BASIC_RATES) {
915 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
916 (unsigned long long) info->basic_rates);
917 }
918}
919
920static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
921 struct ieee80211_vif *vif,
922 struct ieee80211_sta *sta)
923{
924 hwsim_check_magic(vif);
925 hwsim_set_sta_magic(sta);
926
927 return 0;
928}
929
930static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
931 struct ieee80211_vif *vif,
932 struct ieee80211_sta *sta)
933{
934 hwsim_check_magic(vif);
935 hwsim_clear_sta_magic(sta);
936
937 return 0;
938}
939
940static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
941 struct ieee80211_vif *vif,
942 enum sta_notify_cmd cmd,
943 struct ieee80211_sta *sta)
944{
945 hwsim_check_magic(vif);
946
947 switch (cmd) {
948 case STA_NOTIFY_SLEEP:
949 case STA_NOTIFY_AWAKE:
950 /* TODO: make good use of these flags */
951 break;
952 default:
953 WARN(1, "Invalid sta notify: %d\n", cmd);
954 break;
955 }
956}
957
958static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
959 struct ieee80211_sta *sta,
960 bool set)
961{
962 hwsim_check_sta_magic(sta);
963 return 0;
964}
965
966static int mac80211_hwsim_conf_tx(
967 struct ieee80211_hw *hw, u16 queue,
968 const struct ieee80211_tx_queue_params *params)
969{
970 wiphy_debug(hw->wiphy,
971 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
972 __func__, queue,
973 params->txop, params->cw_min,
974 params->cw_max, params->aifs);
975 return 0;
976}
977
978static int mac80211_hwsim_get_survey(
979 struct ieee80211_hw *hw, int idx,
980 struct survey_info *survey)
981{
982 struct ieee80211_conf *conf = &hw->conf;
983
984 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
985
986 if (idx != 0)
987 return -ENOENT;
988
989 /* Current channel */
990 survey->channel = conf->channel;
991
992 /*
993 * Magically conjured noise level --- this is only ok for simulated hardware.
994 *
995 * A real driver which cannot determine the real channel noise MUST NOT
996 * report any noise, especially not a magically conjured one :-)
997 */
998 survey->filled = SURVEY_INFO_NOISE_DBM;
999 survey->noise = -92;
1000
1001 return 0;
1002}
1003
1004#ifdef CONFIG_NL80211_TESTMODE
1005/*
1006 * This section contains example code for using netlink
1007 * attributes with the testmode command in nl80211.
1008 */
1009
1010/* These enums need to be kept in sync with userspace */
1011enum hwsim_testmode_attr {
1012 __HWSIM_TM_ATTR_INVALID = 0,
1013 HWSIM_TM_ATTR_CMD = 1,
1014 HWSIM_TM_ATTR_PS = 2,
1015
1016 /* keep last */
1017 __HWSIM_TM_ATTR_AFTER_LAST,
1018 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1019};
1020
1021enum hwsim_testmode_cmd {
1022 HWSIM_TM_CMD_SET_PS = 0,
1023 HWSIM_TM_CMD_GET_PS = 1,
1024};
1025
1026static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1027 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1028 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1029};
1030
1031static int hwsim_fops_ps_write(void *dat, u64 val);
1032
1033static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1034 void *data, int len)
1035{
1036 struct mac80211_hwsim_data *hwsim = hw->priv;
1037 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1038 struct sk_buff *skb;
1039 int err, ps;
1040
1041 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1042 hwsim_testmode_policy);
1043 if (err)
1044 return err;
1045
1046 if (!tb[HWSIM_TM_ATTR_CMD])
1047 return -EINVAL;
1048
1049 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1050 case HWSIM_TM_CMD_SET_PS:
1051 if (!tb[HWSIM_TM_ATTR_PS])
1052 return -EINVAL;
1053 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1054 return hwsim_fops_ps_write(hwsim, ps);
1055 case HWSIM_TM_CMD_GET_PS:
1056 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1057 nla_total_size(sizeof(u32)));
1058 if (!skb)
1059 return -ENOMEM;
1060 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
1061 return cfg80211_testmode_reply(skb);
1062 default:
1063 return -EOPNOTSUPP;
1064 }
1065
1066 nla_put_failure:
1067 kfree_skb(skb);
1068 return -ENOBUFS;
1069}
1070#endif
1071
1072static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1073 struct ieee80211_vif *vif,
1074 enum ieee80211_ampdu_mlme_action action,
1075 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1076 u8 buf_size)
1077{
1078 switch (action) {
1079 case IEEE80211_AMPDU_TX_START:
1080 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1081 break;
1082 case IEEE80211_AMPDU_TX_STOP:
1083 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1084 break;
1085 case IEEE80211_AMPDU_TX_OPERATIONAL:
1086 break;
1087 case IEEE80211_AMPDU_RX_START:
1088 case IEEE80211_AMPDU_RX_STOP:
1089 break;
1090 default:
1091 return -EOPNOTSUPP;
1092 }
1093
1094 return 0;
1095}
1096
1097static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1098{
1099 /* Not implemented, queues only on kernel side */
1100}
1101
1102struct hw_scan_done {
1103 struct delayed_work w;
1104 struct ieee80211_hw *hw;
1105};
1106
1107static void hw_scan_done(struct work_struct *work)
1108{
1109 struct hw_scan_done *hsd =
1110 container_of(work, struct hw_scan_done, w.work);
1111
1112 ieee80211_scan_completed(hsd->hw, false);
1113 kfree(hsd);
1114}
1115
1116static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1117 struct ieee80211_vif *vif,
1118 struct cfg80211_scan_request *req)
1119{
1120 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1121 int i;
1122
1123 if (!hsd)
1124 return -ENOMEM;
1125
1126 hsd->hw = hw;
1127 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1128
1129 printk(KERN_DEBUG "hwsim hw_scan request\n");
1130 for (i = 0; i < req->n_channels; i++)
1131 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1132 req->channels[i]->center_freq);
1133 print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1134 16, 1, req->ie, req->ie_len, 1);
1135
1136 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1137
1138 return 0;
1139}
1140
1141static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1142{
1143 struct mac80211_hwsim_data *hwsim = hw->priv;
1144
1145 mutex_lock(&hwsim->mutex);
1146
1147 if (hwsim->scanning) {
1148 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1149 goto out;
1150 }
1151
1152 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1153 hwsim->scanning = true;
1154
1155out:
1156 mutex_unlock(&hwsim->mutex);
1157}
1158
1159static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1160{
1161 struct mac80211_hwsim_data *hwsim = hw->priv;
1162
1163 mutex_lock(&hwsim->mutex);
1164
1165 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1166 hwsim->scanning = false;
1167
1168 mutex_unlock(&hwsim->mutex);
1169}
1170
1171static struct ieee80211_ops mac80211_hwsim_ops =
1172{
1173 .tx = mac80211_hwsim_tx,
1174 .start = mac80211_hwsim_start,
1175 .stop = mac80211_hwsim_stop,
1176 .add_interface = mac80211_hwsim_add_interface,
1177 .change_interface = mac80211_hwsim_change_interface,
1178 .remove_interface = mac80211_hwsim_remove_interface,
1179 .config = mac80211_hwsim_config,
1180 .configure_filter = mac80211_hwsim_configure_filter,
1181 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1182 .sta_add = mac80211_hwsim_sta_add,
1183 .sta_remove = mac80211_hwsim_sta_remove,
1184 .sta_notify = mac80211_hwsim_sta_notify,
1185 .set_tim = mac80211_hwsim_set_tim,
1186 .conf_tx = mac80211_hwsim_conf_tx,
1187 .get_survey = mac80211_hwsim_get_survey,
1188 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1189 .ampdu_action = mac80211_hwsim_ampdu_action,
1190 .sw_scan_start = mac80211_hwsim_sw_scan,
1191 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1192 .flush = mac80211_hwsim_flush,
1193};
1194
1195
1196static void mac80211_hwsim_free(void)
1197{
1198 struct list_head tmplist, *i, *tmp;
1199 struct mac80211_hwsim_data *data, *tmpdata;
1200
1201 INIT_LIST_HEAD(&tmplist);
1202
1203 spin_lock_bh(&hwsim_radio_lock);
1204 list_for_each_safe(i, tmp, &hwsim_radios)
1205 list_move(i, &tmplist);
1206 spin_unlock_bh(&hwsim_radio_lock);
1207
1208 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1209 debugfs_remove(data->debugfs_group);
1210 debugfs_remove(data->debugfs_ps);
1211 debugfs_remove(data->debugfs);
1212 ieee80211_unregister_hw(data->hw);
1213 device_unregister(data->dev);
1214 ieee80211_free_hw(data->hw);
1215 }
1216 class_destroy(hwsim_class);
1217}
1218
1219
1220static struct device_driver mac80211_hwsim_driver = {
1221 .name = "mac80211_hwsim"
1222};
1223
1224static const struct net_device_ops hwsim_netdev_ops = {
1225 .ndo_start_xmit = hwsim_mon_xmit,
1226 .ndo_change_mtu = eth_change_mtu,
1227 .ndo_set_mac_address = eth_mac_addr,
1228 .ndo_validate_addr = eth_validate_addr,
1229};
1230
1231static void hwsim_mon_setup(struct net_device *dev)
1232{
1233 dev->netdev_ops = &hwsim_netdev_ops;
1234 dev->destructor = free_netdev;
1235 ether_setup(dev);
1236 dev->tx_queue_len = 0;
1237 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1238 memset(dev->dev_addr, 0, ETH_ALEN);
1239 dev->dev_addr[0] = 0x12;
1240}
1241
1242
1243static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1244{
1245 struct mac80211_hwsim_data *data = dat;
1246 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1247 struct sk_buff *skb;
1248 struct ieee80211_pspoll *pspoll;
1249 int _pid;
1250
1251 if (!vp->assoc)
1252 return;
1253
1254 wiphy_debug(data->hw->wiphy,
1255 "%s: send PS-Poll to %pM for aid %d\n",
1256 __func__, vp->bssid, vp->aid);
1257
1258 skb = dev_alloc_skb(sizeof(*pspoll));
1259 if (!skb)
1260 return;
1261 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1262 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1263 IEEE80211_STYPE_PSPOLL |
1264 IEEE80211_FCTL_PM);
1265 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1266 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1267 memcpy(pspoll->ta, mac, ETH_ALEN);
1268
1269 /* wmediumd mode check */
1270 _pid = wmediumd_pid;
1271
1272 if (_pid)
1273 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1274
1275 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1276 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1277 dev_kfree_skb(skb);
1278}
1279
1280
1281static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1282 struct ieee80211_vif *vif, int ps)
1283{
1284 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1285 struct sk_buff *skb;
1286 struct ieee80211_hdr *hdr;
1287 int _pid;
1288
1289 if (!vp->assoc)
1290 return;
1291
1292 wiphy_debug(data->hw->wiphy,
1293 "%s: send data::nullfunc to %pM ps=%d\n",
1294 __func__, vp->bssid, ps);
1295
1296 skb = dev_alloc_skb(sizeof(*hdr));
1297 if (!skb)
1298 return;
1299 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1300 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1301 IEEE80211_STYPE_NULLFUNC |
1302 (ps ? IEEE80211_FCTL_PM : 0));
1303 hdr->duration_id = cpu_to_le16(0);
1304 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1305 memcpy(hdr->addr2, mac, ETH_ALEN);
1306 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1307
1308 /* wmediumd mode check */
1309 _pid = wmediumd_pid;
1310
1311 if (_pid)
1312 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1313
1314 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1315 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1316 dev_kfree_skb(skb);
1317}
1318
1319
1320static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1321 struct ieee80211_vif *vif)
1322{
1323 struct mac80211_hwsim_data *data = dat;
1324 hwsim_send_nullfunc(data, mac, vif, 1);
1325}
1326
1327
1328static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1329 struct ieee80211_vif *vif)
1330{
1331 struct mac80211_hwsim_data *data = dat;
1332 hwsim_send_nullfunc(data, mac, vif, 0);
1333}
1334
1335
1336static int hwsim_fops_ps_read(void *dat, u64 *val)
1337{
1338 struct mac80211_hwsim_data *data = dat;
1339 *val = data->ps;
1340 return 0;
1341}
1342
1343static int hwsim_fops_ps_write(void *dat, u64 val)
1344{
1345 struct mac80211_hwsim_data *data = dat;
1346 enum ps_mode old_ps;
1347
1348 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1349 val != PS_MANUAL_POLL)
1350 return -EINVAL;
1351
1352 old_ps = data->ps;
1353 data->ps = val;
1354
1355 if (val == PS_MANUAL_POLL) {
1356 ieee80211_iterate_active_interfaces(data->hw,
1357 hwsim_send_ps_poll, data);
1358 data->ps_poll_pending = true;
1359 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1360 ieee80211_iterate_active_interfaces(data->hw,
1361 hwsim_send_nullfunc_ps,
1362 data);
1363 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1364 ieee80211_iterate_active_interfaces(data->hw,
1365 hwsim_send_nullfunc_no_ps,
1366 data);
1367 }
1368
1369 return 0;
1370}
1371
1372DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1373 "%llu\n");
1374
1375
1376static int hwsim_fops_group_read(void *dat, u64 *val)
1377{
1378 struct mac80211_hwsim_data *data = dat;
1379 *val = data->group;
1380 return 0;
1381}
1382
1383static int hwsim_fops_group_write(void *dat, u64 val)
1384{
1385 struct mac80211_hwsim_data *data = dat;
1386 data->group = val;
1387 return 0;
1388}
1389
1390DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1391 hwsim_fops_group_read, hwsim_fops_group_write,
1392 "%llx\n");
1393
1394struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1395 struct mac_address *addr)
1396{
1397 struct mac80211_hwsim_data *data;
1398 bool _found = false;
1399
1400 spin_lock_bh(&hwsim_radio_lock);
1401 list_for_each_entry(data, &hwsim_radios, list) {
1402 if (memcmp(data->addresses[1].addr, addr,
1403 sizeof(struct mac_address)) == 0) {
1404 _found = true;
1405 break;
1406 }
1407 }
1408 spin_unlock_bh(&hwsim_radio_lock);
1409
1410 if (!_found)
1411 return NULL;
1412
1413 return data;
1414}
1415
1416static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1417 struct genl_info *info)
1418{
1419
1420 struct ieee80211_hdr *hdr;
1421 struct mac80211_hwsim_data *data2;
1422 struct ieee80211_tx_info *txi;
1423 struct hwsim_tx_rate *tx_attempts;
1424 struct sk_buff __user *ret_skb;
1425 struct sk_buff *skb, *tmp;
1426 struct mac_address *src;
1427 unsigned int hwsim_flags;
1428
1429 int i;
1430 bool found = false;
1431
1432 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1433 !info->attrs[HWSIM_ATTR_FLAGS] ||
1434 !info->attrs[HWSIM_ATTR_COOKIE] ||
1435 !info->attrs[HWSIM_ATTR_TX_INFO])
1436 goto out;
1437
1438 src = (struct mac_address *)nla_data(
1439 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1440 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1441
1442 ret_skb = (struct sk_buff __user *)
1443 (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1444
1445 data2 = get_hwsim_data_ref_from_addr(src);
1446
1447 if (data2 == NULL)
1448 goto out;
1449
1450 /* look for the skb matching the cookie passed back from user */
1451 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1452 if (skb == ret_skb) {
1453 skb_unlink(skb, &data2->pending);
1454 found = true;
1455 break;
1456 }
1457 }
1458
1459 /* not found */
1460 if (!found)
1461 goto out;
1462
1463 /* Tx info received because the frame was broadcasted on user space,
1464 so we get all the necessary info: tx attempts and skb control buff */
1465
1466 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1467 info->attrs[HWSIM_ATTR_TX_INFO]);
1468
1469 /* now send back TX status */
1470 txi = IEEE80211_SKB_CB(skb);
1471
1472 if (txi->control.vif)
1473 hwsim_check_magic(txi->control.vif);
1474 if (txi->control.sta)
1475 hwsim_check_sta_magic(txi->control.sta);
1476
1477 ieee80211_tx_info_clear_status(txi);
1478
1479 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1480 txi->status.rates[i].idx = tx_attempts[i].idx;
1481 txi->status.rates[i].count = tx_attempts[i].count;
1482 /*txi->status.rates[i].flags = 0;*/
1483 }
1484
1485 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1486
1487 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1488 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1489 if (skb->len >= 16) {
1490 hdr = (struct ieee80211_hdr *) skb->data;
1491 mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1492 }
1493 }
1494 ieee80211_tx_status_irqsafe(data2->hw, skb);
1495 return 0;
1496out:
1497 return -EINVAL;
1498
1499}
1500
1501static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1502 struct genl_info *info)
1503{
1504
1505 struct mac80211_hwsim_data *data2;
1506 struct ieee80211_rx_status rx_status;
1507 struct mac_address *dst;
1508 int frame_data_len;
1509 char *frame_data;
1510 struct sk_buff *skb = NULL;
1511
1512 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1513 !info->attrs[HWSIM_ATTR_FRAME] ||
1514 !info->attrs[HWSIM_ATTR_RX_RATE] ||
1515 !info->attrs[HWSIM_ATTR_SIGNAL])
1516 goto out;
1517
1518 dst = (struct mac_address *)nla_data(
1519 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1520
1521 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1522 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1523
1524 /* Allocate new skb here */
1525 skb = alloc_skb(frame_data_len, GFP_KERNEL);
1526 if (skb == NULL)
1527 goto err;
1528
1529 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1530 /* Copy the data */
1531 memcpy(skb_put(skb, frame_data_len), frame_data,
1532 frame_data_len);
1533 } else
1534 goto err;
1535
1536 data2 = get_hwsim_data_ref_from_addr(dst);
1537
1538 if (data2 == NULL)
1539 goto out;
1540
1541 /* check if radio is configured properly */
1542
1543 if (data2->idle || !data2->started || !data2->channel)
1544 goto out;
1545
1546 /*A frame is received from user space*/
1547 memset(&rx_status, 0, sizeof(rx_status));
1548 rx_status.freq = data2->channel->center_freq;
1549 rx_status.band = data2->channel->band;
1550 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1551 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1552
1553 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1554 ieee80211_rx_irqsafe(data2->hw, skb);
1555
1556 return 0;
1557err:
1558 printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1559 goto out;
1560out:
1561 dev_kfree_skb(skb);
1562 return -EINVAL;
1563}
1564
1565static int hwsim_register_received_nl(struct sk_buff *skb_2,
1566 struct genl_info *info)
1567{
1568 if (info == NULL)
1569 goto out;
1570
1571 wmediumd_pid = info->snd_pid;
1572
1573 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1574 "switching to wmediumd mode with pid %d\n", info->snd_pid);
1575
1576 return 0;
1577out:
1578 printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1579 return -EINVAL;
1580}
1581
1582/* Generic Netlink operations array */
1583static struct genl_ops hwsim_ops[] = {
1584 {
1585 .cmd = HWSIM_CMD_REGISTER,
1586 .policy = hwsim_genl_policy,
1587 .doit = hwsim_register_received_nl,
1588 .flags = GENL_ADMIN_PERM,
1589 },
1590 {
1591 .cmd = HWSIM_CMD_FRAME,
1592 .policy = hwsim_genl_policy,
1593 .doit = hwsim_cloned_frame_received_nl,
1594 },
1595 {
1596 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1597 .policy = hwsim_genl_policy,
1598 .doit = hwsim_tx_info_frame_received_nl,
1599 },
1600};
1601
1602static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1603 unsigned long state,
1604 void *_notify)
1605{
1606 struct netlink_notify *notify = _notify;
1607
1608 if (state != NETLINK_URELEASE)
1609 return NOTIFY_DONE;
1610
1611 if (notify->pid == wmediumd_pid) {
1612 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1613 " socket, switching to perfect channel medium\n");
1614 wmediumd_pid = 0;
1615 }
1616 return NOTIFY_DONE;
1617
1618}
1619
1620static struct notifier_block hwsim_netlink_notifier = {
1621 .notifier_call = mac80211_hwsim_netlink_notify,
1622};
1623
1624static int hwsim_init_netlink(void)
1625{
1626 int rc;
1627 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1628
1629 wmediumd_pid = 0;
1630
1631 rc = genl_register_family_with_ops(&hwsim_genl_family,
1632 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1633 if (rc)
1634 goto failure;
1635
1636 rc = netlink_register_notifier(&hwsim_netlink_notifier);
1637 if (rc)
1638 goto failure;
1639
1640 return 0;
1641
1642failure:
1643 printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1644 return -EINVAL;
1645}
1646
1647static void hwsim_exit_netlink(void)
1648{
1649 int ret;
1650
1651 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1652 /* unregister the notifier */
1653 netlink_unregister_notifier(&hwsim_netlink_notifier);
1654 /* unregister the family */
1655 ret = genl_unregister_family(&hwsim_genl_family);
1656 if (ret)
1657 printk(KERN_DEBUG "mac80211_hwsim: "
1658 "unregister family %i\n", ret);
1659}
1660
1661static int __init init_mac80211_hwsim(void)
1662{
1663 int i, err = 0;
1664 u8 addr[ETH_ALEN];
1665 struct mac80211_hwsim_data *data;
1666 struct ieee80211_hw *hw;
1667 enum ieee80211_band band;
1668
1669 if (radios < 1 || radios > 100)
1670 return -EINVAL;
1671
1672 if (fake_hw_scan) {
1673 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1674 mac80211_hwsim_ops.sw_scan_start = NULL;
1675 mac80211_hwsim_ops.sw_scan_complete = NULL;
1676 }
1677
1678 spin_lock_init(&hwsim_radio_lock);
1679 INIT_LIST_HEAD(&hwsim_radios);
1680
1681 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1682 if (IS_ERR(hwsim_class))
1683 return PTR_ERR(hwsim_class);
1684
1685 memset(addr, 0, ETH_ALEN);
1686 addr[0] = 0x02;
1687
1688 for (i = 0; i < radios; i++) {
1689 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1690 i);
1691 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1692 if (!hw) {
1693 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1694 "failed\n");
1695 err = -ENOMEM;
1696 goto failed;
1697 }
1698 data = hw->priv;
1699 data->hw = hw;
1700
1701 data->dev = device_create(hwsim_class, NULL, 0, hw,
1702 "hwsim%d", i);
1703 if (IS_ERR(data->dev)) {
1704 printk(KERN_DEBUG
1705 "mac80211_hwsim: device_create "
1706 "failed (%ld)\n", PTR_ERR(data->dev));
1707 err = -ENOMEM;
1708 goto failed_drvdata;
1709 }
1710 data->dev->driver = &mac80211_hwsim_driver;
1711 skb_queue_head_init(&data->pending);
1712
1713 SET_IEEE80211_DEV(hw, data->dev);
1714 addr[3] = i >> 8;
1715 addr[4] = i;
1716 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1717 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1718 data->addresses[1].addr[0] |= 0x40;
1719 hw->wiphy->n_addresses = 2;
1720 hw->wiphy->addresses = data->addresses;
1721
1722 if (fake_hw_scan) {
1723 hw->wiphy->max_scan_ssids = 255;
1724 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1725 }
1726
1727 hw->channel_change_time = 1;
1728 hw->queues = 4;
1729 hw->wiphy->interface_modes =
1730 BIT(NL80211_IFTYPE_STATION) |
1731 BIT(NL80211_IFTYPE_AP) |
1732 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1733 BIT(NL80211_IFTYPE_P2P_GO) |
1734 BIT(NL80211_IFTYPE_ADHOC) |
1735 BIT(NL80211_IFTYPE_MESH_POINT);
1736
1737 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1738 IEEE80211_HW_SIGNAL_DBM |
1739 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1740 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1741 IEEE80211_HW_AMPDU_AGGREGATION;
1742
1743 /* ask mac80211 to reserve space for magic */
1744 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1745 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1746
1747 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1748 sizeof(hwsim_channels_2ghz));
1749 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1750 sizeof(hwsim_channels_5ghz));
1751 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1752
1753 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1754 struct ieee80211_supported_band *sband = &data->bands[band];
1755 switch (band) {
1756 case IEEE80211_BAND_2GHZ:
1757 sband->channels = data->channels_2ghz;
1758 sband->n_channels =
1759 ARRAY_SIZE(hwsim_channels_2ghz);
1760 sband->bitrates = data->rates;
1761 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1762 break;
1763 case IEEE80211_BAND_5GHZ:
1764 sband->channels = data->channels_5ghz;
1765 sband->n_channels =
1766 ARRAY_SIZE(hwsim_channels_5ghz);
1767 sband->bitrates = data->rates + 4;
1768 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1769 break;
1770 default:
1771 break;
1772 }
1773
1774 sband->ht_cap.ht_supported = true;
1775 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1776 IEEE80211_HT_CAP_GRN_FLD |
1777 IEEE80211_HT_CAP_SGI_40 |
1778 IEEE80211_HT_CAP_DSSSCCK40;
1779 sband->ht_cap.ampdu_factor = 0x3;
1780 sband->ht_cap.ampdu_density = 0x6;
1781 memset(&sband->ht_cap.mcs, 0,
1782 sizeof(sband->ht_cap.mcs));
1783 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1784 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1785 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1786
1787 hw->wiphy->bands[band] = sband;
1788 }
1789 /* By default all radios are belonging to the first group */
1790 data->group = 1;
1791 mutex_init(&data->mutex);
1792
1793 /* Enable frame retransmissions for lossy channels */
1794 hw->max_rates = 4;
1795 hw->max_rate_tries = 11;
1796
1797 /* Work to be done prior to ieee80211_register_hw() */
1798 switch (regtest) {
1799 case HWSIM_REGTEST_DISABLED:
1800 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1801 case HWSIM_REGTEST_DRIVER_REG_ALL:
1802 case HWSIM_REGTEST_DIFF_COUNTRY:
1803 /*
1804 * Nothing to be done for driver regulatory domain
1805 * hints prior to ieee80211_register_hw()
1806 */
1807 break;
1808 case HWSIM_REGTEST_WORLD_ROAM:
1809 if (i == 0) {
1810 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1811 wiphy_apply_custom_regulatory(hw->wiphy,
1812 &hwsim_world_regdom_custom_01);
1813 }
1814 break;
1815 case HWSIM_REGTEST_CUSTOM_WORLD:
1816 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1817 wiphy_apply_custom_regulatory(hw->wiphy,
1818 &hwsim_world_regdom_custom_01);
1819 break;
1820 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1821 if (i == 0) {
1822 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1823 wiphy_apply_custom_regulatory(hw->wiphy,
1824 &hwsim_world_regdom_custom_01);
1825 } else if (i == 1) {
1826 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1827 wiphy_apply_custom_regulatory(hw->wiphy,
1828 &hwsim_world_regdom_custom_02);
1829 }
1830 break;
1831 case HWSIM_REGTEST_STRICT_ALL:
1832 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1833 break;
1834 case HWSIM_REGTEST_STRICT_FOLLOW:
1835 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1836 if (i == 0)
1837 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1838 break;
1839 case HWSIM_REGTEST_ALL:
1840 if (i == 0) {
1841 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1842 wiphy_apply_custom_regulatory(hw->wiphy,
1843 &hwsim_world_regdom_custom_01);
1844 } else if (i == 1) {
1845 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1846 wiphy_apply_custom_regulatory(hw->wiphy,
1847 &hwsim_world_regdom_custom_02);
1848 } else if (i == 4)
1849 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1850 break;
1851 default:
1852 break;
1853 }
1854
1855 /* give the regulatory workqueue a chance to run */
1856 if (regtest)
1857 schedule_timeout_interruptible(1);
1858 err = ieee80211_register_hw(hw);
1859 if (err < 0) {
1860 printk(KERN_DEBUG "mac80211_hwsim: "
1861 "ieee80211_register_hw failed (%d)\n", err);
1862 goto failed_hw;
1863 }
1864
1865 /* Work to be done after to ieee80211_register_hw() */
1866 switch (regtest) {
1867 case HWSIM_REGTEST_WORLD_ROAM:
1868 case HWSIM_REGTEST_DISABLED:
1869 break;
1870 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1871 if (!i)
1872 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1873 break;
1874 case HWSIM_REGTEST_DRIVER_REG_ALL:
1875 case HWSIM_REGTEST_STRICT_ALL:
1876 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1877 break;
1878 case HWSIM_REGTEST_DIFF_COUNTRY:
1879 if (i < ARRAY_SIZE(hwsim_alpha2s))
1880 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1881 break;
1882 case HWSIM_REGTEST_CUSTOM_WORLD:
1883 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1884 /*
1885 * Nothing to be done for custom world regulatory
1886 * domains after to ieee80211_register_hw
1887 */
1888 break;
1889 case HWSIM_REGTEST_STRICT_FOLLOW:
1890 if (i == 0)
1891 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1892 break;
1893 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1894 if (i == 0)
1895 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1896 else if (i == 1)
1897 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1898 break;
1899 case HWSIM_REGTEST_ALL:
1900 if (i == 2)
1901 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1902 else if (i == 3)
1903 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1904 else if (i == 4)
1905 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1906 break;
1907 default:
1908 break;
1909 }
1910
1911 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1912 hw->wiphy->perm_addr);
1913
1914 data->debugfs = debugfs_create_dir("hwsim",
1915 hw->wiphy->debugfsdir);
1916 data->debugfs_ps = debugfs_create_file("ps", 0666,
1917 data->debugfs, data,
1918 &hwsim_fops_ps);
1919 data->debugfs_group = debugfs_create_file("group", 0666,
1920 data->debugfs, data,
1921 &hwsim_fops_group);
1922
1923 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1924 (unsigned long) hw);
1925
1926 list_add_tail(&data->list, &hwsim_radios);
1927 }
1928
1929 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1930 if (hwsim_mon == NULL)
1931 goto failed;
1932
1933 rtnl_lock();
1934
1935 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1936 if (err < 0)
1937 goto failed_mon;
1938
1939
1940 err = register_netdevice(hwsim_mon);
1941 if (err < 0)
1942 goto failed_mon;
1943
1944 rtnl_unlock();
1945
1946 err = hwsim_init_netlink();
1947 if (err < 0)
1948 goto failed_nl;
1949
1950 return 0;
1951
1952failed_nl:
1953 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
1954 return err;
1955
1956failed_mon:
1957 rtnl_unlock();
1958 free_netdev(hwsim_mon);
1959 mac80211_hwsim_free();
1960 return err;
1961
1962failed_hw:
1963 device_unregister(data->dev);
1964failed_drvdata:
1965 ieee80211_free_hw(hw);
1966failed:
1967 mac80211_hwsim_free();
1968 return err;
1969}
1970
1971
1972static void __exit exit_mac80211_hwsim(void)
1973{
1974 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1975
1976 hwsim_exit_netlink();
1977
1978 mac80211_hwsim_free();
1979 unregister_netdev(hwsim_mon);
1980}
1981
1982
1983module_init(init_mac80211_hwsim);
1984module_exit(exit_mac80211_hwsim);
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
4 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
5 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
6 * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
7 * Copyright (C) 2018 - 2020 Intel Corporation
8 */
9
10/*
11 * TODO:
12 * - Add TSF sync and fix IBSS beacon transmission by adding
13 * competition for "air time" at TBTT
14 * - RX filtering based on filter configuration (data->rx_filter)
15 */
16
17#include <linux/list.h>
18#include <linux/slab.h>
19#include <linux/spinlock.h>
20#include <net/dst.h>
21#include <net/xfrm.h>
22#include <net/mac80211.h>
23#include <net/ieee80211_radiotap.h>
24#include <linux/if_arp.h>
25#include <linux/rtnetlink.h>
26#include <linux/etherdevice.h>
27#include <linux/platform_device.h>
28#include <linux/debugfs.h>
29#include <linux/module.h>
30#include <linux/ktime.h>
31#include <net/genetlink.h>
32#include <net/net_namespace.h>
33#include <net/netns/generic.h>
34#include <linux/rhashtable.h>
35#include <linux/nospec.h>
36#include <linux/virtio.h>
37#include <linux/virtio_ids.h>
38#include <linux/virtio_config.h>
39#include "mac80211_hwsim.h"
40
41#define WARN_QUEUE 100
42#define MAX_QUEUE 200
43
44MODULE_AUTHOR("Jouni Malinen");
45MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
46MODULE_LICENSE("GPL");
47
48static int radios = 2;
49module_param(radios, int, 0444);
50MODULE_PARM_DESC(radios, "Number of simulated radios");
51
52static int channels = 1;
53module_param(channels, int, 0444);
54MODULE_PARM_DESC(channels, "Number of concurrent channels");
55
56static bool paged_rx = false;
57module_param(paged_rx, bool, 0644);
58MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
59
60static bool rctbl = false;
61module_param(rctbl, bool, 0444);
62MODULE_PARM_DESC(rctbl, "Handle rate control table");
63
64static bool support_p2p_device = true;
65module_param(support_p2p_device, bool, 0444);
66MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
67
68/**
69 * enum hwsim_regtest - the type of regulatory tests we offer
70 *
71 * These are the different values you can use for the regtest
72 * module parameter. This is useful to help test world roaming
73 * and the driver regulatory_hint() call and combinations of these.
74 * If you want to do specific alpha2 regulatory domain tests simply
75 * use the userspace regulatory request as that will be respected as
76 * well without the need of this module parameter. This is designed
77 * only for testing the driver regulatory request, world roaming
78 * and all possible combinations.
79 *
80 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
81 * this is the default value.
82 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
83 * hint, only one driver regulatory hint will be sent as such the
84 * secondary radios are expected to follow.
85 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
86 * request with all radios reporting the same regulatory domain.
87 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
88 * different regulatory domains requests. Expected behaviour is for
89 * an intersection to occur but each device will still use their
90 * respective regulatory requested domains. Subsequent radios will
91 * use the resulting intersection.
92 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
93 * this by using a custom beacon-capable regulatory domain for the first
94 * radio. All other device world roam.
95 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
96 * domain requests. All radios will adhere to this custom world regulatory
97 * domain.
98 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
99 * domain requests. The first radio will adhere to the first custom world
100 * regulatory domain, the second one to the second custom world regulatory
101 * domain. All other devices will world roam.
102 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
103 * settings, only the first radio will send a regulatory domain request
104 * and use strict settings. The rest of the radios are expected to follow.
105 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
106 * settings. All radios will adhere to this.
107 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
108 * domain settings, combined with secondary driver regulatory domain
109 * settings. The first radio will get a strict regulatory domain setting
110 * using the first driver regulatory request and the second radio will use
111 * non-strict settings using the second driver regulatory request. All
112 * other devices should follow the intersection created between the
113 * first two.
114 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
115 * at least 6 radios for a complete test. We will test in this order:
116 * 1 - driver custom world regulatory domain
117 * 2 - second custom world regulatory domain
118 * 3 - first driver regulatory domain request
119 * 4 - second driver regulatory domain request
120 * 5 - strict regulatory domain settings using the third driver regulatory
121 * domain request
122 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
123 * regulatory requests.
124 */
125enum hwsim_regtest {
126 HWSIM_REGTEST_DISABLED = 0,
127 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
128 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
129 HWSIM_REGTEST_DIFF_COUNTRY = 3,
130 HWSIM_REGTEST_WORLD_ROAM = 4,
131 HWSIM_REGTEST_CUSTOM_WORLD = 5,
132 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
133 HWSIM_REGTEST_STRICT_FOLLOW = 7,
134 HWSIM_REGTEST_STRICT_ALL = 8,
135 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
136 HWSIM_REGTEST_ALL = 10,
137};
138
139/* Set to one of the HWSIM_REGTEST_* values above */
140static int regtest = HWSIM_REGTEST_DISABLED;
141module_param(regtest, int, 0444);
142MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
143
144static const char *hwsim_alpha2s[] = {
145 "FI",
146 "AL",
147 "US",
148 "DE",
149 "JP",
150 "AL",
151};
152
153static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
154 .n_reg_rules = 5,
155 .alpha2 = "99",
156 .reg_rules = {
157 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
158 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
159 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
160 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
161 REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
162 }
163};
164
165static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
166 .n_reg_rules = 3,
167 .alpha2 = "99",
168 .reg_rules = {
169 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
170 REG_RULE(5725-10, 5850+10, 40, 0, 30,
171 NL80211_RRF_NO_IR),
172 REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
173 }
174};
175
176static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
177 &hwsim_world_regdom_custom_01,
178 &hwsim_world_regdom_custom_02,
179};
180
181struct hwsim_vif_priv {
182 u32 magic;
183 u8 bssid[ETH_ALEN];
184 bool assoc;
185 bool bcn_en;
186 u16 aid;
187};
188
189#define HWSIM_VIF_MAGIC 0x69537748
190
191static inline void hwsim_check_magic(struct ieee80211_vif *vif)
192{
193 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
194 WARN(vp->magic != HWSIM_VIF_MAGIC,
195 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
196 vif, vp->magic, vif->addr, vif->type, vif->p2p);
197}
198
199static inline void hwsim_set_magic(struct ieee80211_vif *vif)
200{
201 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
202 vp->magic = HWSIM_VIF_MAGIC;
203}
204
205static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
206{
207 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
208 vp->magic = 0;
209}
210
211struct hwsim_sta_priv {
212 u32 magic;
213};
214
215#define HWSIM_STA_MAGIC 0x6d537749
216
217static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
218{
219 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
220 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
221}
222
223static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
224{
225 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
226 sp->magic = HWSIM_STA_MAGIC;
227}
228
229static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
230{
231 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
232 sp->magic = 0;
233}
234
235struct hwsim_chanctx_priv {
236 u32 magic;
237};
238
239#define HWSIM_CHANCTX_MAGIC 0x6d53774a
240
241static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
242{
243 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
244 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
245}
246
247static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
248{
249 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
250 cp->magic = HWSIM_CHANCTX_MAGIC;
251}
252
253static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
254{
255 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
256 cp->magic = 0;
257}
258
259static unsigned int hwsim_net_id;
260
261static DEFINE_IDA(hwsim_netgroup_ida);
262
263struct hwsim_net {
264 int netgroup;
265 u32 wmediumd;
266};
267
268static inline int hwsim_net_get_netgroup(struct net *net)
269{
270 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
271
272 return hwsim_net->netgroup;
273}
274
275static inline int hwsim_net_set_netgroup(struct net *net)
276{
277 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
278
279 hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
280 0, 0, GFP_KERNEL);
281 return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
282}
283
284static inline u32 hwsim_net_get_wmediumd(struct net *net)
285{
286 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
287
288 return hwsim_net->wmediumd;
289}
290
291static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
292{
293 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
294
295 hwsim_net->wmediumd = portid;
296}
297
298static struct class *hwsim_class;
299
300static struct net_device *hwsim_mon; /* global monitor netdev */
301
302#define CHAN2G(_freq) { \
303 .band = NL80211_BAND_2GHZ, \
304 .center_freq = (_freq), \
305 .hw_value = (_freq), \
306}
307
308#define CHAN5G(_freq) { \
309 .band = NL80211_BAND_5GHZ, \
310 .center_freq = (_freq), \
311 .hw_value = (_freq), \
312}
313
314static const struct ieee80211_channel hwsim_channels_2ghz[] = {
315 CHAN2G(2412), /* Channel 1 */
316 CHAN2G(2417), /* Channel 2 */
317 CHAN2G(2422), /* Channel 3 */
318 CHAN2G(2427), /* Channel 4 */
319 CHAN2G(2432), /* Channel 5 */
320 CHAN2G(2437), /* Channel 6 */
321 CHAN2G(2442), /* Channel 7 */
322 CHAN2G(2447), /* Channel 8 */
323 CHAN2G(2452), /* Channel 9 */
324 CHAN2G(2457), /* Channel 10 */
325 CHAN2G(2462), /* Channel 11 */
326 CHAN2G(2467), /* Channel 12 */
327 CHAN2G(2472), /* Channel 13 */
328 CHAN2G(2484), /* Channel 14 */
329};
330
331static const struct ieee80211_channel hwsim_channels_5ghz[] = {
332 CHAN5G(5180), /* Channel 36 */
333 CHAN5G(5200), /* Channel 40 */
334 CHAN5G(5220), /* Channel 44 */
335 CHAN5G(5240), /* Channel 48 */
336
337 CHAN5G(5260), /* Channel 52 */
338 CHAN5G(5280), /* Channel 56 */
339 CHAN5G(5300), /* Channel 60 */
340 CHAN5G(5320), /* Channel 64 */
341
342 CHAN5G(5500), /* Channel 100 */
343 CHAN5G(5520), /* Channel 104 */
344 CHAN5G(5540), /* Channel 108 */
345 CHAN5G(5560), /* Channel 112 */
346 CHAN5G(5580), /* Channel 116 */
347 CHAN5G(5600), /* Channel 120 */
348 CHAN5G(5620), /* Channel 124 */
349 CHAN5G(5640), /* Channel 128 */
350 CHAN5G(5660), /* Channel 132 */
351 CHAN5G(5680), /* Channel 136 */
352 CHAN5G(5700), /* Channel 140 */
353
354 CHAN5G(5745), /* Channel 149 */
355 CHAN5G(5765), /* Channel 153 */
356 CHAN5G(5785), /* Channel 157 */
357 CHAN5G(5805), /* Channel 161 */
358 CHAN5G(5825), /* Channel 165 */
359 CHAN5G(5845), /* Channel 169 */
360
361 CHAN5G(5855), /* Channel 171 */
362 CHAN5G(5860), /* Channel 172 */
363 CHAN5G(5865), /* Channel 173 */
364 CHAN5G(5870), /* Channel 174 */
365
366 CHAN5G(5875), /* Channel 175 */
367 CHAN5G(5880), /* Channel 176 */
368 CHAN5G(5885), /* Channel 177 */
369 CHAN5G(5890), /* Channel 178 */
370 CHAN5G(5895), /* Channel 179 */
371 CHAN5G(5900), /* Channel 180 */
372 CHAN5G(5905), /* Channel 181 */
373
374 CHAN5G(5910), /* Channel 182 */
375 CHAN5G(5915), /* Channel 183 */
376 CHAN5G(5920), /* Channel 184 */
377 CHAN5G(5925), /* Channel 185 */
378};
379
380static const struct ieee80211_rate hwsim_rates[] = {
381 { .bitrate = 10 },
382 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
383 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
384 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
385 { .bitrate = 60 },
386 { .bitrate = 90 },
387 { .bitrate = 120 },
388 { .bitrate = 180 },
389 { .bitrate = 240 },
390 { .bitrate = 360 },
391 { .bitrate = 480 },
392 { .bitrate = 540 }
393};
394
395static const u32 hwsim_ciphers[] = {
396 WLAN_CIPHER_SUITE_WEP40,
397 WLAN_CIPHER_SUITE_WEP104,
398 WLAN_CIPHER_SUITE_TKIP,
399 WLAN_CIPHER_SUITE_CCMP,
400 WLAN_CIPHER_SUITE_CCMP_256,
401 WLAN_CIPHER_SUITE_GCMP,
402 WLAN_CIPHER_SUITE_GCMP_256,
403 WLAN_CIPHER_SUITE_AES_CMAC,
404 WLAN_CIPHER_SUITE_BIP_CMAC_256,
405 WLAN_CIPHER_SUITE_BIP_GMAC_128,
406 WLAN_CIPHER_SUITE_BIP_GMAC_256,
407};
408
409#define OUI_QCA 0x001374
410#define QCA_NL80211_SUBCMD_TEST 1
411enum qca_nl80211_vendor_subcmds {
412 QCA_WLAN_VENDOR_ATTR_TEST = 8,
413 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
414};
415
416static const struct nla_policy
417hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
418 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
419};
420
421static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
422 struct wireless_dev *wdev,
423 const void *data, int data_len)
424{
425 struct sk_buff *skb;
426 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
427 int err;
428 u32 val;
429
430 err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
431 data_len, hwsim_vendor_test_policy, NULL);
432 if (err)
433 return err;
434 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
435 return -EINVAL;
436 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
437 wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
438
439 /* Send a vendor event as a test. Note that this would not normally be
440 * done within a command handler, but rather, based on some other
441 * trigger. For simplicity, this command is used to trigger the event
442 * here.
443 *
444 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
445 */
446 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
447 if (skb) {
448 /* skb_put() or nla_put() will fill up data within
449 * NL80211_ATTR_VENDOR_DATA.
450 */
451
452 /* Add vendor data */
453 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
454
455 /* Send the event - this will call nla_nest_end() */
456 cfg80211_vendor_event(skb, GFP_KERNEL);
457 }
458
459 /* Send a response to the command */
460 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
461 if (!skb)
462 return -ENOMEM;
463
464 /* skb_put() or nla_put() will fill up data within
465 * NL80211_ATTR_VENDOR_DATA
466 */
467 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
468
469 return cfg80211_vendor_cmd_reply(skb);
470}
471
472static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
473 {
474 .info = { .vendor_id = OUI_QCA,
475 .subcmd = QCA_NL80211_SUBCMD_TEST },
476 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
477 .doit = mac80211_hwsim_vendor_cmd_test,
478 .policy = hwsim_vendor_test_policy,
479 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
480 }
481};
482
483/* Advertise support vendor specific events */
484static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
485 { .vendor_id = OUI_QCA, .subcmd = 1 },
486};
487
488static spinlock_t hwsim_radio_lock;
489static LIST_HEAD(hwsim_radios);
490static struct rhashtable hwsim_radios_rht;
491static int hwsim_radio_idx;
492static int hwsim_radios_generation = 1;
493
494static struct platform_driver mac80211_hwsim_driver = {
495 .driver = {
496 .name = "mac80211_hwsim",
497 },
498};
499
500struct mac80211_hwsim_data {
501 struct list_head list;
502 struct rhash_head rht;
503 struct ieee80211_hw *hw;
504 struct device *dev;
505 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
506 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
507 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
508 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
509 struct ieee80211_iface_combination if_combination;
510 struct ieee80211_iface_limit if_limits[3];
511 int n_if_limits;
512
513 u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
514
515 struct mac_address addresses[2];
516 int channels, idx;
517 bool use_chanctx;
518 bool destroy_on_close;
519 u32 portid;
520 char alpha2[2];
521 const struct ieee80211_regdomain *regd;
522
523 struct ieee80211_channel *tmp_chan;
524 struct ieee80211_channel *roc_chan;
525 u32 roc_duration;
526 struct delayed_work roc_start;
527 struct delayed_work roc_done;
528 struct delayed_work hw_scan;
529 struct cfg80211_scan_request *hw_scan_request;
530 struct ieee80211_vif *hw_scan_vif;
531 int scan_chan_idx;
532 u8 scan_addr[ETH_ALEN];
533 struct {
534 struct ieee80211_channel *channel;
535 unsigned long next_start, start, end;
536 } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
537 ARRAY_SIZE(hwsim_channels_5ghz)];
538
539 struct ieee80211_channel *channel;
540 u64 beacon_int /* beacon interval in us */;
541 unsigned int rx_filter;
542 bool started, idle, scanning;
543 struct mutex mutex;
544 struct hrtimer beacon_timer;
545 enum ps_mode {
546 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
547 } ps;
548 bool ps_poll_pending;
549 struct dentry *debugfs;
550
551 uintptr_t pending_cookie;
552 struct sk_buff_head pending; /* packets pending */
553 /*
554 * Only radios in the same group can communicate together (the
555 * channel has to match too). Each bit represents a group. A
556 * radio can be in more than one group.
557 */
558 u64 group;
559
560 /* group shared by radios created in the same netns */
561 int netgroup;
562 /* wmediumd portid responsible for netgroup of this radio */
563 u32 wmediumd;
564
565 /* difference between this hw's clock and the real clock, in usecs */
566 s64 tsf_offset;
567 s64 bcn_delta;
568 /* absolute beacon transmission time. Used to cover up "tx" delay. */
569 u64 abs_bcn_ts;
570
571 /* Stats */
572 u64 tx_pkts;
573 u64 rx_pkts;
574 u64 tx_bytes;
575 u64 rx_bytes;
576 u64 tx_dropped;
577 u64 tx_failed;
578};
579
580static const struct rhashtable_params hwsim_rht_params = {
581 .nelem_hint = 2,
582 .automatic_shrinking = true,
583 .key_len = ETH_ALEN,
584 .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
585 .head_offset = offsetof(struct mac80211_hwsim_data, rht),
586};
587
588struct hwsim_radiotap_hdr {
589 struct ieee80211_radiotap_header hdr;
590 __le64 rt_tsft;
591 u8 rt_flags;
592 u8 rt_rate;
593 __le16 rt_channel;
594 __le16 rt_chbitmask;
595} __packed;
596
597struct hwsim_radiotap_ack_hdr {
598 struct ieee80211_radiotap_header hdr;
599 u8 rt_flags;
600 u8 pad;
601 __le16 rt_channel;
602 __le16 rt_chbitmask;
603} __packed;
604
605/* MAC80211_HWSIM netlink family */
606static struct genl_family hwsim_genl_family;
607
608enum hwsim_multicast_groups {
609 HWSIM_MCGRP_CONFIG,
610};
611
612static const struct genl_multicast_group hwsim_mcgrps[] = {
613 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
614};
615
616/* MAC80211_HWSIM netlink policy */
617
618static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
619 [HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
620 [HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
621 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
622 .len = IEEE80211_MAX_DATA_LEN },
623 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
624 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
625 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
626 [HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
627 .len = IEEE80211_TX_MAX_RATES *
628 sizeof(struct hwsim_tx_rate)},
629 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
630 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
631 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
632 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
633 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
634 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
635 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
636 [HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
637 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
638 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
639 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
640 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
641 [HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
642 [HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
643 [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
644 [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
645};
646
647#if IS_REACHABLE(CONFIG_VIRTIO)
648
649/* MAC80211_HWSIM virtio queues */
650static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
651static bool hwsim_virtio_enabled;
652static spinlock_t hwsim_virtio_lock;
653
654static void hwsim_virtio_rx_work(struct work_struct *work);
655static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
656
657static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
658 struct sk_buff *skb)
659{
660 struct scatterlist sg[1];
661 unsigned long flags;
662 int err;
663
664 spin_lock_irqsave(&hwsim_virtio_lock, flags);
665 if (!hwsim_virtio_enabled) {
666 err = -ENODEV;
667 goto out_free;
668 }
669
670 sg_init_one(sg, skb->head, skb_end_offset(skb));
671 err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
672 GFP_ATOMIC);
673 if (err)
674 goto out_free;
675 virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
676 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
677 return 0;
678
679out_free:
680 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
681 nlmsg_free(skb);
682 return err;
683}
684#else
685/* cause a linker error if this ends up being needed */
686extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
687 struct sk_buff *skb);
688#define hwsim_virtio_enabled false
689#endif
690
691static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
692 struct sk_buff *skb,
693 struct ieee80211_channel *chan);
694
695/* sysfs attributes */
696static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
697{
698 struct mac80211_hwsim_data *data = dat;
699 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
700 struct sk_buff *skb;
701 struct ieee80211_pspoll *pspoll;
702
703 if (!vp->assoc)
704 return;
705
706 wiphy_dbg(data->hw->wiphy,
707 "%s: send PS-Poll to %pM for aid %d\n",
708 __func__, vp->bssid, vp->aid);
709
710 skb = dev_alloc_skb(sizeof(*pspoll));
711 if (!skb)
712 return;
713 pspoll = skb_put(skb, sizeof(*pspoll));
714 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
715 IEEE80211_STYPE_PSPOLL |
716 IEEE80211_FCTL_PM);
717 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
718 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
719 memcpy(pspoll->ta, mac, ETH_ALEN);
720
721 rcu_read_lock();
722 mac80211_hwsim_tx_frame(data->hw, skb,
723 rcu_dereference(vif->chanctx_conf)->def.chan);
724 rcu_read_unlock();
725}
726
727static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
728 struct ieee80211_vif *vif, int ps)
729{
730 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
731 struct sk_buff *skb;
732 struct ieee80211_hdr *hdr;
733
734 if (!vp->assoc)
735 return;
736
737 wiphy_dbg(data->hw->wiphy,
738 "%s: send data::nullfunc to %pM ps=%d\n",
739 __func__, vp->bssid, ps);
740
741 skb = dev_alloc_skb(sizeof(*hdr));
742 if (!skb)
743 return;
744 hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
745 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
746 IEEE80211_STYPE_NULLFUNC |
747 IEEE80211_FCTL_TODS |
748 (ps ? IEEE80211_FCTL_PM : 0));
749 hdr->duration_id = cpu_to_le16(0);
750 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
751 memcpy(hdr->addr2, mac, ETH_ALEN);
752 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
753
754 rcu_read_lock();
755 mac80211_hwsim_tx_frame(data->hw, skb,
756 rcu_dereference(vif->chanctx_conf)->def.chan);
757 rcu_read_unlock();
758}
759
760
761static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
762 struct ieee80211_vif *vif)
763{
764 struct mac80211_hwsim_data *data = dat;
765 hwsim_send_nullfunc(data, mac, vif, 1);
766}
767
768static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
769 struct ieee80211_vif *vif)
770{
771 struct mac80211_hwsim_data *data = dat;
772 hwsim_send_nullfunc(data, mac, vif, 0);
773}
774
775static int hwsim_fops_ps_read(void *dat, u64 *val)
776{
777 struct mac80211_hwsim_data *data = dat;
778 *val = data->ps;
779 return 0;
780}
781
782static int hwsim_fops_ps_write(void *dat, u64 val)
783{
784 struct mac80211_hwsim_data *data = dat;
785 enum ps_mode old_ps;
786
787 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
788 val != PS_MANUAL_POLL)
789 return -EINVAL;
790
791 if (val == PS_MANUAL_POLL) {
792 if (data->ps != PS_ENABLED)
793 return -EINVAL;
794 local_bh_disable();
795 ieee80211_iterate_active_interfaces_atomic(
796 data->hw, IEEE80211_IFACE_ITER_NORMAL,
797 hwsim_send_ps_poll, data);
798 local_bh_enable();
799 return 0;
800 }
801 old_ps = data->ps;
802 data->ps = val;
803
804 local_bh_disable();
805 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
806 ieee80211_iterate_active_interfaces_atomic(
807 data->hw, IEEE80211_IFACE_ITER_NORMAL,
808 hwsim_send_nullfunc_ps, data);
809 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
810 ieee80211_iterate_active_interfaces_atomic(
811 data->hw, IEEE80211_IFACE_ITER_NORMAL,
812 hwsim_send_nullfunc_no_ps, data);
813 }
814 local_bh_enable();
815
816 return 0;
817}
818
819DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
820 "%llu\n");
821
822static int hwsim_write_simulate_radar(void *dat, u64 val)
823{
824 struct mac80211_hwsim_data *data = dat;
825
826 ieee80211_radar_detected(data->hw);
827
828 return 0;
829}
830
831DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
832 hwsim_write_simulate_radar, "%llu\n");
833
834static int hwsim_fops_group_read(void *dat, u64 *val)
835{
836 struct mac80211_hwsim_data *data = dat;
837 *val = data->group;
838 return 0;
839}
840
841static int hwsim_fops_group_write(void *dat, u64 val)
842{
843 struct mac80211_hwsim_data *data = dat;
844 data->group = val;
845 return 0;
846}
847
848DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
849 hwsim_fops_group_read, hwsim_fops_group_write,
850 "%llx\n");
851
852static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
853 struct net_device *dev)
854{
855 /* TODO: allow packet injection */
856 dev_kfree_skb(skb);
857 return NETDEV_TX_OK;
858}
859
860static inline u64 mac80211_hwsim_get_tsf_raw(void)
861{
862 return ktime_to_us(ktime_get_real());
863}
864
865static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
866{
867 u64 now = mac80211_hwsim_get_tsf_raw();
868 return cpu_to_le64(now + data->tsf_offset);
869}
870
871static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
872 struct ieee80211_vif *vif)
873{
874 struct mac80211_hwsim_data *data = hw->priv;
875 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
876}
877
878static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
879 struct ieee80211_vif *vif, u64 tsf)
880{
881 struct mac80211_hwsim_data *data = hw->priv;
882 u64 now = mac80211_hwsim_get_tsf(hw, vif);
883 u32 bcn_int = data->beacon_int;
884 u64 delta = abs(tsf - now);
885
886 /* adjust after beaconing with new timestamp at old TBTT */
887 if (tsf > now) {
888 data->tsf_offset += delta;
889 data->bcn_delta = do_div(delta, bcn_int);
890 } else {
891 data->tsf_offset -= delta;
892 data->bcn_delta = -(s64)do_div(delta, bcn_int);
893 }
894}
895
896static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
897 struct sk_buff *tx_skb,
898 struct ieee80211_channel *chan)
899{
900 struct mac80211_hwsim_data *data = hw->priv;
901 struct sk_buff *skb;
902 struct hwsim_radiotap_hdr *hdr;
903 u16 flags;
904 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
905 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
906
907 if (WARN_ON(!txrate))
908 return;
909
910 if (!netif_running(hwsim_mon))
911 return;
912
913 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
914 if (skb == NULL)
915 return;
916
917 hdr = skb_push(skb, sizeof(*hdr));
918 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
919 hdr->hdr.it_pad = 0;
920 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
921 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
922 (1 << IEEE80211_RADIOTAP_RATE) |
923 (1 << IEEE80211_RADIOTAP_TSFT) |
924 (1 << IEEE80211_RADIOTAP_CHANNEL));
925 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
926 hdr->rt_flags = 0;
927 hdr->rt_rate = txrate->bitrate / 5;
928 hdr->rt_channel = cpu_to_le16(chan->center_freq);
929 flags = IEEE80211_CHAN_2GHZ;
930 if (txrate->flags & IEEE80211_RATE_ERP_G)
931 flags |= IEEE80211_CHAN_OFDM;
932 else
933 flags |= IEEE80211_CHAN_CCK;
934 hdr->rt_chbitmask = cpu_to_le16(flags);
935
936 skb->dev = hwsim_mon;
937 skb_reset_mac_header(skb);
938 skb->ip_summed = CHECKSUM_UNNECESSARY;
939 skb->pkt_type = PACKET_OTHERHOST;
940 skb->protocol = htons(ETH_P_802_2);
941 memset(skb->cb, 0, sizeof(skb->cb));
942 netif_rx(skb);
943}
944
945
946static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
947 const u8 *addr)
948{
949 struct sk_buff *skb;
950 struct hwsim_radiotap_ack_hdr *hdr;
951 u16 flags;
952 struct ieee80211_hdr *hdr11;
953
954 if (!netif_running(hwsim_mon))
955 return;
956
957 skb = dev_alloc_skb(100);
958 if (skb == NULL)
959 return;
960
961 hdr = skb_put(skb, sizeof(*hdr));
962 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
963 hdr->hdr.it_pad = 0;
964 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
965 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
966 (1 << IEEE80211_RADIOTAP_CHANNEL));
967 hdr->rt_flags = 0;
968 hdr->pad = 0;
969 hdr->rt_channel = cpu_to_le16(chan->center_freq);
970 flags = IEEE80211_CHAN_2GHZ;
971 hdr->rt_chbitmask = cpu_to_le16(flags);
972
973 hdr11 = skb_put(skb, 10);
974 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
975 IEEE80211_STYPE_ACK);
976 hdr11->duration_id = cpu_to_le16(0);
977 memcpy(hdr11->addr1, addr, ETH_ALEN);
978
979 skb->dev = hwsim_mon;
980 skb_reset_mac_header(skb);
981 skb->ip_summed = CHECKSUM_UNNECESSARY;
982 skb->pkt_type = PACKET_OTHERHOST;
983 skb->protocol = htons(ETH_P_802_2);
984 memset(skb->cb, 0, sizeof(skb->cb));
985 netif_rx(skb);
986}
987
988struct mac80211_hwsim_addr_match_data {
989 u8 addr[ETH_ALEN];
990 bool ret;
991};
992
993static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
994 struct ieee80211_vif *vif)
995{
996 struct mac80211_hwsim_addr_match_data *md = data;
997
998 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
999 md->ret = true;
1000}
1001
1002static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
1003 const u8 *addr)
1004{
1005 struct mac80211_hwsim_addr_match_data md = {
1006 .ret = false,
1007 };
1008
1009 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
1010 return true;
1011
1012 memcpy(md.addr, addr, ETH_ALEN);
1013
1014 ieee80211_iterate_active_interfaces_atomic(data->hw,
1015 IEEE80211_IFACE_ITER_NORMAL,
1016 mac80211_hwsim_addr_iter,
1017 &md);
1018
1019 return md.ret;
1020}
1021
1022static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
1023 struct sk_buff *skb)
1024{
1025 switch (data->ps) {
1026 case PS_DISABLED:
1027 return true;
1028 case PS_ENABLED:
1029 return false;
1030 case PS_AUTO_POLL:
1031 /* TODO: accept (some) Beacons by default and other frames only
1032 * if pending PS-Poll has been sent */
1033 return true;
1034 case PS_MANUAL_POLL:
1035 /* Allow unicast frames to own address if there is a pending
1036 * PS-Poll */
1037 if (data->ps_poll_pending &&
1038 mac80211_hwsim_addr_match(data, skb->data + 4)) {
1039 data->ps_poll_pending = false;
1040 return true;
1041 }
1042 return false;
1043 }
1044
1045 return true;
1046}
1047
1048static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1049 struct sk_buff *skb, int portid)
1050{
1051 struct net *net;
1052 bool found = false;
1053 int res = -ENOENT;
1054
1055 rcu_read_lock();
1056 for_each_net_rcu(net) {
1057 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1058 res = genlmsg_unicast(net, skb, portid);
1059 found = true;
1060 break;
1061 }
1062 }
1063 rcu_read_unlock();
1064
1065 if (!found)
1066 nlmsg_free(skb);
1067
1068 return res;
1069}
1070
1071static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
1072 const u8 *addr, bool add)
1073{
1074 struct mac80211_hwsim_data *data = hw->priv;
1075 u32 _portid = READ_ONCE(data->wmediumd);
1076 struct sk_buff *skb;
1077 void *msg_head;
1078
1079 if (!_portid && !hwsim_virtio_enabled)
1080 return;
1081
1082 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1083 if (!skb)
1084 return;
1085
1086 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1087 add ? HWSIM_CMD_ADD_MAC_ADDR :
1088 HWSIM_CMD_DEL_MAC_ADDR);
1089 if (!msg_head) {
1090 pr_debug("mac80211_hwsim: problem with msg_head\n");
1091 goto nla_put_failure;
1092 }
1093
1094 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1095 ETH_ALEN, data->addresses[1].addr))
1096 goto nla_put_failure;
1097
1098 if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
1099 goto nla_put_failure;
1100
1101 genlmsg_end(skb, msg_head);
1102
1103 if (hwsim_virtio_enabled)
1104 hwsim_tx_virtio(data, skb);
1105 else
1106 hwsim_unicast_netgroup(data, skb, _portid);
1107 return;
1108nla_put_failure:
1109 nlmsg_free(skb);
1110}
1111
1112static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1113{
1114 u16 result = 0;
1115
1116 if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1117 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1118 if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1119 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1120 if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1121 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1122 if (rate->flags & IEEE80211_TX_RC_MCS)
1123 result |= MAC80211_HWSIM_TX_RC_MCS;
1124 if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1125 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1126 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1127 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1128 if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1129 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1130 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1131 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1132 if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1133 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1134 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1135 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1136 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1137 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1138
1139 return result;
1140}
1141
1142static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1143 struct sk_buff *my_skb,
1144 int dst_portid)
1145{
1146 struct sk_buff *skb;
1147 struct mac80211_hwsim_data *data = hw->priv;
1148 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1149 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1150 void *msg_head;
1151 unsigned int hwsim_flags = 0;
1152 int i;
1153 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1154 struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1155 uintptr_t cookie;
1156
1157 if (data->ps != PS_DISABLED)
1158 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1159 /* If the queue contains MAX_QUEUE skb's drop some */
1160 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1161 /* Droping until WARN_QUEUE level */
1162 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1163 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1164 data->tx_dropped++;
1165 }
1166 }
1167
1168 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1169 if (skb == NULL)
1170 goto nla_put_failure;
1171
1172 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1173 HWSIM_CMD_FRAME);
1174 if (msg_head == NULL) {
1175 pr_debug("mac80211_hwsim: problem with msg_head\n");
1176 goto nla_put_failure;
1177 }
1178
1179 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1180 ETH_ALEN, data->addresses[1].addr))
1181 goto nla_put_failure;
1182
1183 /* We get the skb->data */
1184 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1185 goto nla_put_failure;
1186
1187 /* We get the flags for this transmission, and we translate them to
1188 wmediumd flags */
1189
1190 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1191 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1192
1193 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1194 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1195
1196 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1197 goto nla_put_failure;
1198
1199 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1200 goto nla_put_failure;
1201
1202 /* We get the tx control (rate and retries) info*/
1203
1204 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1205 tx_attempts[i].idx = info->status.rates[i].idx;
1206 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1207 tx_attempts[i].count = info->status.rates[i].count;
1208 tx_attempts_flags[i].flags =
1209 trans_tx_rate_flags_ieee2hwsim(
1210 &info->status.rates[i]);
1211 }
1212
1213 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1214 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1215 tx_attempts))
1216 goto nla_put_failure;
1217
1218 if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1219 sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1220 tx_attempts_flags))
1221 goto nla_put_failure;
1222
1223 /* We create a cookie to identify this skb */
1224 data->pending_cookie++;
1225 cookie = data->pending_cookie;
1226 info->rate_driver_data[0] = (void *)cookie;
1227 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1228 goto nla_put_failure;
1229
1230 genlmsg_end(skb, msg_head);
1231
1232 if (hwsim_virtio_enabled) {
1233 if (hwsim_tx_virtio(data, skb))
1234 goto err_free_txskb;
1235 } else {
1236 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1237 goto err_free_txskb;
1238 }
1239
1240 /* Enqueue the packet */
1241 skb_queue_tail(&data->pending, my_skb);
1242 data->tx_pkts++;
1243 data->tx_bytes += my_skb->len;
1244 return;
1245
1246nla_put_failure:
1247 nlmsg_free(skb);
1248err_free_txskb:
1249 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1250 ieee80211_free_txskb(hw, my_skb);
1251 data->tx_failed++;
1252}
1253
1254static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1255 struct ieee80211_channel *c2)
1256{
1257 if (!c1 || !c2)
1258 return false;
1259
1260 return c1->center_freq == c2->center_freq;
1261}
1262
1263struct tx_iter_data {
1264 struct ieee80211_channel *channel;
1265 bool receive;
1266};
1267
1268static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1269 struct ieee80211_vif *vif)
1270{
1271 struct tx_iter_data *data = _data;
1272
1273 if (!vif->chanctx_conf)
1274 return;
1275
1276 if (!hwsim_chans_compat(data->channel,
1277 rcu_dereference(vif->chanctx_conf)->def.chan))
1278 return;
1279
1280 data->receive = true;
1281}
1282
1283static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1284{
1285 /*
1286 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1287 * e.g. like this:
1288 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1289 * (but you should use a valid OUI, not that)
1290 *
1291 * If anyone wants to 'donate' a radiotap OUI/subns code
1292 * please send a patch removing this #ifdef and changing
1293 * the values accordingly.
1294 */
1295#ifdef HWSIM_RADIOTAP_OUI
1296 struct ieee80211_vendor_radiotap *rtap;
1297
1298 /*
1299 * Note that this code requires the headroom in the SKB
1300 * that was allocated earlier.
1301 */
1302 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1303 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1304 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1305 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1306 rtap->subns = 127;
1307
1308 /*
1309 * Radiotap vendor namespaces can (and should) also be
1310 * split into fields by using the standard radiotap
1311 * presence bitmap mechanism. Use just BIT(0) here for
1312 * the presence bitmap.
1313 */
1314 rtap->present = BIT(0);
1315 /* We have 8 bytes of (dummy) data */
1316 rtap->len = 8;
1317 /* For testing, also require it to be aligned */
1318 rtap->align = 8;
1319 /* And also test that padding works, 4 bytes */
1320 rtap->pad = 4;
1321 /* push the data */
1322 memcpy(rtap->data, "ABCDEFGH", 8);
1323 /* make sure to clear padding, mac80211 doesn't */
1324 memset(rtap->data + 8, 0, 4);
1325
1326 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1327#endif
1328}
1329
1330static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1331 struct sk_buff *skb,
1332 struct ieee80211_channel *chan)
1333{
1334 struct mac80211_hwsim_data *data = hw->priv, *data2;
1335 bool ack = false;
1336 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1337 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1338 struct ieee80211_rx_status rx_status;
1339 u64 now;
1340
1341 memset(&rx_status, 0, sizeof(rx_status));
1342 rx_status.flag |= RX_FLAG_MACTIME_START;
1343 rx_status.freq = chan->center_freq;
1344 rx_status.band = chan->band;
1345 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1346 rx_status.rate_idx =
1347 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1348 rx_status.nss =
1349 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1350 rx_status.encoding = RX_ENC_VHT;
1351 } else {
1352 rx_status.rate_idx = info->control.rates[0].idx;
1353 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1354 rx_status.encoding = RX_ENC_HT;
1355 }
1356 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1357 rx_status.bw = RATE_INFO_BW_40;
1358 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1359 rx_status.bw = RATE_INFO_BW_80;
1360 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1361 rx_status.bw = RATE_INFO_BW_160;
1362 else
1363 rx_status.bw = RATE_INFO_BW_20;
1364 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1365 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1366 /* TODO: simulate real signal strength (and optional packet loss) */
1367 rx_status.signal = -50;
1368 if (info->control.vif)
1369 rx_status.signal += info->control.vif->bss_conf.txpower;
1370
1371 if (data->ps != PS_DISABLED)
1372 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1373
1374 /* release the skb's source info */
1375 skb_orphan(skb);
1376 skb_dst_drop(skb);
1377 skb->mark = 0;
1378 skb_ext_reset(skb);
1379 nf_reset_ct(skb);
1380
1381 /*
1382 * Get absolute mactime here so all HWs RX at the "same time", and
1383 * absolute TX time for beacon mactime so the timestamp matches.
1384 * Giving beacons a different mactime than non-beacons looks messy, but
1385 * it helps the Toffset be exact and a ~10us mactime discrepancy
1386 * probably doesn't really matter.
1387 */
1388 if (ieee80211_is_beacon(hdr->frame_control) ||
1389 ieee80211_is_probe_resp(hdr->frame_control)) {
1390 rx_status.boottime_ns = ktime_get_boottime_ns();
1391 now = data->abs_bcn_ts;
1392 } else {
1393 now = mac80211_hwsim_get_tsf_raw();
1394 }
1395
1396 /* Copy skb to all enabled radios that are on the current frequency */
1397 spin_lock(&hwsim_radio_lock);
1398 list_for_each_entry(data2, &hwsim_radios, list) {
1399 struct sk_buff *nskb;
1400 struct tx_iter_data tx_iter_data = {
1401 .receive = false,
1402 .channel = chan,
1403 };
1404
1405 if (data == data2)
1406 continue;
1407
1408 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1409 !hwsim_ps_rx_ok(data2, skb))
1410 continue;
1411
1412 if (!(data->group & data2->group))
1413 continue;
1414
1415 if (data->netgroup != data2->netgroup)
1416 continue;
1417
1418 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1419 !hwsim_chans_compat(chan, data2->channel)) {
1420 ieee80211_iterate_active_interfaces_atomic(
1421 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1422 mac80211_hwsim_tx_iter, &tx_iter_data);
1423 if (!tx_iter_data.receive)
1424 continue;
1425 }
1426
1427 /*
1428 * reserve some space for our vendor and the normal
1429 * radiotap header, since we're copying anyway
1430 */
1431 if (skb->len < PAGE_SIZE && paged_rx) {
1432 struct page *page = alloc_page(GFP_ATOMIC);
1433
1434 if (!page)
1435 continue;
1436
1437 nskb = dev_alloc_skb(128);
1438 if (!nskb) {
1439 __free_page(page);
1440 continue;
1441 }
1442
1443 memcpy(page_address(page), skb->data, skb->len);
1444 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1445 } else {
1446 nskb = skb_copy(skb, GFP_ATOMIC);
1447 if (!nskb)
1448 continue;
1449 }
1450
1451 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1452 ack = true;
1453
1454 rx_status.mactime = now + data2->tsf_offset;
1455
1456 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1457
1458 mac80211_hwsim_add_vendor_rtap(nskb);
1459
1460 data2->rx_pkts++;
1461 data2->rx_bytes += nskb->len;
1462 ieee80211_rx_irqsafe(data2->hw, nskb);
1463 }
1464 spin_unlock(&hwsim_radio_lock);
1465
1466 return ack;
1467}
1468
1469static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1470 struct ieee80211_tx_control *control,
1471 struct sk_buff *skb)
1472{
1473 struct mac80211_hwsim_data *data = hw->priv;
1474 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1475 struct ieee80211_hdr *hdr = (void *)skb->data;
1476 struct ieee80211_chanctx_conf *chanctx_conf;
1477 struct ieee80211_channel *channel;
1478 bool ack;
1479 u32 _portid;
1480
1481 if (WARN_ON(skb->len < 10)) {
1482 /* Should not happen; just a sanity check for addr1 use */
1483 ieee80211_free_txskb(hw, skb);
1484 return;
1485 }
1486
1487 if (!data->use_chanctx) {
1488 channel = data->channel;
1489 } else if (txi->hw_queue == 4) {
1490 channel = data->tmp_chan;
1491 } else {
1492 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1493 if (chanctx_conf)
1494 channel = chanctx_conf->def.chan;
1495 else
1496 channel = NULL;
1497 }
1498
1499 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1500 ieee80211_free_txskb(hw, skb);
1501 return;
1502 }
1503
1504 if (data->idle && !data->tmp_chan) {
1505 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1506 ieee80211_free_txskb(hw, skb);
1507 return;
1508 }
1509
1510 if (txi->control.vif)
1511 hwsim_check_magic(txi->control.vif);
1512 if (control->sta)
1513 hwsim_check_sta_magic(control->sta);
1514
1515 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1516 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1517 txi->control.rates,
1518 ARRAY_SIZE(txi->control.rates));
1519
1520 if (skb->len >= 24 + 8 &&
1521 ieee80211_is_probe_resp(hdr->frame_control)) {
1522 /* fake header transmission time */
1523 struct ieee80211_mgmt *mgmt;
1524 struct ieee80211_rate *txrate;
1525 u64 ts;
1526
1527 mgmt = (struct ieee80211_mgmt *)skb->data;
1528 txrate = ieee80211_get_tx_rate(hw, txi);
1529 ts = mac80211_hwsim_get_tsf_raw();
1530 mgmt->u.probe_resp.timestamp =
1531 cpu_to_le64(ts + data->tsf_offset +
1532 24 * 8 * 10 / txrate->bitrate);
1533 }
1534
1535 mac80211_hwsim_monitor_rx(hw, skb, channel);
1536
1537 /* wmediumd mode check */
1538 _portid = READ_ONCE(data->wmediumd);
1539
1540 if (_portid || hwsim_virtio_enabled)
1541 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1542
1543 /* NO wmediumd detected, perfect medium simulation */
1544 data->tx_pkts++;
1545 data->tx_bytes += skb->len;
1546 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1547
1548 if (ack && skb->len >= 16)
1549 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1550
1551 ieee80211_tx_info_clear_status(txi);
1552
1553 /* frame was transmitted at most favorable rate at first attempt */
1554 txi->control.rates[0].count = 1;
1555 txi->control.rates[1].idx = -1;
1556
1557 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1558 txi->flags |= IEEE80211_TX_STAT_ACK;
1559 ieee80211_tx_status_irqsafe(hw, skb);
1560}
1561
1562
1563static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1564{
1565 struct mac80211_hwsim_data *data = hw->priv;
1566 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1567 data->started = true;
1568 return 0;
1569}
1570
1571
1572static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1573{
1574 struct mac80211_hwsim_data *data = hw->priv;
1575 data->started = false;
1576 hrtimer_cancel(&data->beacon_timer);
1577 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1578}
1579
1580
1581static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1582 struct ieee80211_vif *vif)
1583{
1584 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1585 __func__, ieee80211_vif_type_p2p(vif),
1586 vif->addr);
1587 hwsim_set_magic(vif);
1588
1589 if (vif->type != NL80211_IFTYPE_MONITOR)
1590 mac80211_hwsim_config_mac_nl(hw, vif->addr, true);
1591
1592 vif->cab_queue = 0;
1593 vif->hw_queue[IEEE80211_AC_VO] = 0;
1594 vif->hw_queue[IEEE80211_AC_VI] = 1;
1595 vif->hw_queue[IEEE80211_AC_BE] = 2;
1596 vif->hw_queue[IEEE80211_AC_BK] = 3;
1597
1598 return 0;
1599}
1600
1601
1602static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1603 struct ieee80211_vif *vif,
1604 enum nl80211_iftype newtype,
1605 bool newp2p)
1606{
1607 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1608 wiphy_dbg(hw->wiphy,
1609 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1610 __func__, ieee80211_vif_type_p2p(vif),
1611 newtype, vif->addr);
1612 hwsim_check_magic(vif);
1613
1614 /*
1615 * interface may change from non-AP to AP in
1616 * which case this needs to be set up again
1617 */
1618 vif->cab_queue = 0;
1619
1620 return 0;
1621}
1622
1623static void mac80211_hwsim_remove_interface(
1624 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1625{
1626 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1627 __func__, ieee80211_vif_type_p2p(vif),
1628 vif->addr);
1629 hwsim_check_magic(vif);
1630 hwsim_clear_magic(vif);
1631 if (vif->type != NL80211_IFTYPE_MONITOR)
1632 mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
1633}
1634
1635static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1636 struct sk_buff *skb,
1637 struct ieee80211_channel *chan)
1638{
1639 struct mac80211_hwsim_data *data = hw->priv;
1640 u32 _pid = READ_ONCE(data->wmediumd);
1641
1642 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1643 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1644 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1645 txi->control.rates,
1646 ARRAY_SIZE(txi->control.rates));
1647 }
1648
1649 mac80211_hwsim_monitor_rx(hw, skb, chan);
1650
1651 if (_pid || hwsim_virtio_enabled)
1652 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1653
1654 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1655 dev_kfree_skb(skb);
1656}
1657
1658static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1659 struct ieee80211_vif *vif)
1660{
1661 struct mac80211_hwsim_data *data = arg;
1662 struct ieee80211_hw *hw = data->hw;
1663 struct ieee80211_tx_info *info;
1664 struct ieee80211_rate *txrate;
1665 struct ieee80211_mgmt *mgmt;
1666 struct sk_buff *skb;
1667
1668 hwsim_check_magic(vif);
1669
1670 if (vif->type != NL80211_IFTYPE_AP &&
1671 vif->type != NL80211_IFTYPE_MESH_POINT &&
1672 vif->type != NL80211_IFTYPE_ADHOC &&
1673 vif->type != NL80211_IFTYPE_OCB)
1674 return;
1675
1676 skb = ieee80211_beacon_get(hw, vif);
1677 if (skb == NULL)
1678 return;
1679 info = IEEE80211_SKB_CB(skb);
1680 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1681 ieee80211_get_tx_rates(vif, NULL, skb,
1682 info->control.rates,
1683 ARRAY_SIZE(info->control.rates));
1684
1685 txrate = ieee80211_get_tx_rate(hw, info);
1686
1687 mgmt = (struct ieee80211_mgmt *) skb->data;
1688 /* fake header transmission time */
1689 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1690 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1691 data->tsf_offset +
1692 24 * 8 * 10 / txrate->bitrate);
1693
1694 mac80211_hwsim_tx_frame(hw, skb,
1695 rcu_dereference(vif->chanctx_conf)->def.chan);
1696
1697 while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
1698 mac80211_hwsim_tx_frame(hw, skb,
1699 rcu_dereference(vif->chanctx_conf)->def.chan);
1700 }
1701
1702 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1703 ieee80211_csa_finish(vif);
1704}
1705
1706static enum hrtimer_restart
1707mac80211_hwsim_beacon(struct hrtimer *timer)
1708{
1709 struct mac80211_hwsim_data *data =
1710 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1711 struct ieee80211_hw *hw = data->hw;
1712 u64 bcn_int = data->beacon_int;
1713
1714 if (!data->started)
1715 return HRTIMER_NORESTART;
1716
1717 ieee80211_iterate_active_interfaces_atomic(
1718 hw, IEEE80211_IFACE_ITER_NORMAL,
1719 mac80211_hwsim_beacon_tx, data);
1720
1721 /* beacon at new TBTT + beacon interval */
1722 if (data->bcn_delta) {
1723 bcn_int -= data->bcn_delta;
1724 data->bcn_delta = 0;
1725 }
1726 hrtimer_forward(&data->beacon_timer, hrtimer_get_expires(timer),
1727 ns_to_ktime(bcn_int * NSEC_PER_USEC));
1728 return HRTIMER_RESTART;
1729}
1730
1731static const char * const hwsim_chanwidths[] = {
1732 [NL80211_CHAN_WIDTH_5] = "ht5",
1733 [NL80211_CHAN_WIDTH_10] = "ht10",
1734 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1735 [NL80211_CHAN_WIDTH_20] = "ht20",
1736 [NL80211_CHAN_WIDTH_40] = "ht40",
1737 [NL80211_CHAN_WIDTH_80] = "vht80",
1738 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1739 [NL80211_CHAN_WIDTH_160] = "vht160",
1740};
1741
1742static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1743{
1744 struct mac80211_hwsim_data *data = hw->priv;
1745 struct ieee80211_conf *conf = &hw->conf;
1746 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1747 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1748 [IEEE80211_SMPS_OFF] = "off",
1749 [IEEE80211_SMPS_STATIC] = "static",
1750 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1751 };
1752 int idx;
1753
1754 if (conf->chandef.chan)
1755 wiphy_dbg(hw->wiphy,
1756 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1757 __func__,
1758 conf->chandef.chan->center_freq,
1759 conf->chandef.center_freq1,
1760 conf->chandef.center_freq2,
1761 hwsim_chanwidths[conf->chandef.width],
1762 !!(conf->flags & IEEE80211_CONF_IDLE),
1763 !!(conf->flags & IEEE80211_CONF_PS),
1764 smps_modes[conf->smps_mode]);
1765 else
1766 wiphy_dbg(hw->wiphy,
1767 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1768 __func__,
1769 !!(conf->flags & IEEE80211_CONF_IDLE),
1770 !!(conf->flags & IEEE80211_CONF_PS),
1771 smps_modes[conf->smps_mode]);
1772
1773 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1774
1775 WARN_ON(conf->chandef.chan && data->use_chanctx);
1776
1777 mutex_lock(&data->mutex);
1778 if (data->scanning && conf->chandef.chan) {
1779 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1780 if (data->survey_data[idx].channel == data->channel) {
1781 data->survey_data[idx].start =
1782 data->survey_data[idx].next_start;
1783 data->survey_data[idx].end = jiffies;
1784 break;
1785 }
1786 }
1787
1788 data->channel = conf->chandef.chan;
1789
1790 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1791 if (data->survey_data[idx].channel &&
1792 data->survey_data[idx].channel != data->channel)
1793 continue;
1794 data->survey_data[idx].channel = data->channel;
1795 data->survey_data[idx].next_start = jiffies;
1796 break;
1797 }
1798 } else {
1799 data->channel = conf->chandef.chan;
1800 }
1801 mutex_unlock(&data->mutex);
1802
1803 if (!data->started || !data->beacon_int)
1804 hrtimer_cancel(&data->beacon_timer);
1805 else if (!hrtimer_is_queued(&data->beacon_timer)) {
1806 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1807 u32 bcn_int = data->beacon_int;
1808 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1809
1810 hrtimer_start(&data->beacon_timer,
1811 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1812 HRTIMER_MODE_REL_SOFT);
1813 }
1814
1815 return 0;
1816}
1817
1818
1819static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1820 unsigned int changed_flags,
1821 unsigned int *total_flags,u64 multicast)
1822{
1823 struct mac80211_hwsim_data *data = hw->priv;
1824
1825 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1826
1827 data->rx_filter = 0;
1828 if (*total_flags & FIF_ALLMULTI)
1829 data->rx_filter |= FIF_ALLMULTI;
1830 if (*total_flags & FIF_MCAST_ACTION)
1831 data->rx_filter |= FIF_MCAST_ACTION;
1832
1833 *total_flags = data->rx_filter;
1834}
1835
1836static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1837 struct ieee80211_vif *vif)
1838{
1839 unsigned int *count = data;
1840 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1841
1842 if (vp->bcn_en)
1843 (*count)++;
1844}
1845
1846static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1847 struct ieee80211_vif *vif,
1848 struct ieee80211_bss_conf *info,
1849 u32 changed)
1850{
1851 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1852 struct mac80211_hwsim_data *data = hw->priv;
1853
1854 hwsim_check_magic(vif);
1855
1856 wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1857 __func__, changed, vif->addr);
1858
1859 if (changed & BSS_CHANGED_BSSID) {
1860 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1861 __func__, info->bssid);
1862 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1863 }
1864
1865 if (changed & BSS_CHANGED_ASSOC) {
1866 wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1867 info->assoc, info->aid);
1868 vp->assoc = info->assoc;
1869 vp->aid = info->aid;
1870 }
1871
1872 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1873 wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1874 info->enable_beacon, info->beacon_int);
1875 vp->bcn_en = info->enable_beacon;
1876 if (data->started &&
1877 !hrtimer_is_queued(&data->beacon_timer) &&
1878 info->enable_beacon) {
1879 u64 tsf, until_tbtt;
1880 u32 bcn_int;
1881 data->beacon_int = info->beacon_int * 1024;
1882 tsf = mac80211_hwsim_get_tsf(hw, vif);
1883 bcn_int = data->beacon_int;
1884 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1885
1886 hrtimer_start(&data->beacon_timer,
1887 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1888 HRTIMER_MODE_REL_SOFT);
1889 } else if (!info->enable_beacon) {
1890 unsigned int count = 0;
1891 ieee80211_iterate_active_interfaces_atomic(
1892 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1893 mac80211_hwsim_bcn_en_iter, &count);
1894 wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
1895 count);
1896 if (count == 0) {
1897 hrtimer_cancel(&data->beacon_timer);
1898 data->beacon_int = 0;
1899 }
1900 }
1901 }
1902
1903 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1904 wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
1905 info->use_cts_prot);
1906 }
1907
1908 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1909 wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
1910 info->use_short_preamble);
1911 }
1912
1913 if (changed & BSS_CHANGED_ERP_SLOT) {
1914 wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1915 }
1916
1917 if (changed & BSS_CHANGED_HT) {
1918 wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
1919 info->ht_operation_mode);
1920 }
1921
1922 if (changed & BSS_CHANGED_BASIC_RATES) {
1923 wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1924 (unsigned long long) info->basic_rates);
1925 }
1926
1927 if (changed & BSS_CHANGED_TXPOWER)
1928 wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1929}
1930
1931static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1932 struct ieee80211_vif *vif,
1933 struct ieee80211_sta *sta)
1934{
1935 hwsim_check_magic(vif);
1936 hwsim_set_sta_magic(sta);
1937
1938 return 0;
1939}
1940
1941static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1942 struct ieee80211_vif *vif,
1943 struct ieee80211_sta *sta)
1944{
1945 hwsim_check_magic(vif);
1946 hwsim_clear_sta_magic(sta);
1947
1948 return 0;
1949}
1950
1951static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1952 struct ieee80211_vif *vif,
1953 enum sta_notify_cmd cmd,
1954 struct ieee80211_sta *sta)
1955{
1956 hwsim_check_magic(vif);
1957
1958 switch (cmd) {
1959 case STA_NOTIFY_SLEEP:
1960 case STA_NOTIFY_AWAKE:
1961 /* TODO: make good use of these flags */
1962 break;
1963 default:
1964 WARN(1, "Invalid sta notify: %d\n", cmd);
1965 break;
1966 }
1967}
1968
1969static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1970 struct ieee80211_sta *sta,
1971 bool set)
1972{
1973 hwsim_check_sta_magic(sta);
1974 return 0;
1975}
1976
1977static int mac80211_hwsim_conf_tx(
1978 struct ieee80211_hw *hw,
1979 struct ieee80211_vif *vif, u16 queue,
1980 const struct ieee80211_tx_queue_params *params)
1981{
1982 wiphy_dbg(hw->wiphy,
1983 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1984 __func__, queue,
1985 params->txop, params->cw_min,
1986 params->cw_max, params->aifs);
1987 return 0;
1988}
1989
1990static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1991 struct survey_info *survey)
1992{
1993 struct mac80211_hwsim_data *hwsim = hw->priv;
1994
1995 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1996 return -ENOENT;
1997
1998 mutex_lock(&hwsim->mutex);
1999 survey->channel = hwsim->survey_data[idx].channel;
2000 if (!survey->channel) {
2001 mutex_unlock(&hwsim->mutex);
2002 return -ENOENT;
2003 }
2004
2005 /*
2006 * Magically conjured dummy values --- this is only ok for simulated hardware.
2007 *
2008 * A real driver which cannot determine real values noise MUST NOT
2009 * report any, especially not a magically conjured ones :-)
2010 */
2011 survey->filled = SURVEY_INFO_NOISE_DBM |
2012 SURVEY_INFO_TIME |
2013 SURVEY_INFO_TIME_BUSY;
2014 survey->noise = -92;
2015 survey->time =
2016 jiffies_to_msecs(hwsim->survey_data[idx].end -
2017 hwsim->survey_data[idx].start);
2018 /* report 12.5% of channel time is used */
2019 survey->time_busy = survey->time/8;
2020 mutex_unlock(&hwsim->mutex);
2021
2022 return 0;
2023}
2024
2025#ifdef CONFIG_NL80211_TESTMODE
2026/*
2027 * This section contains example code for using netlink
2028 * attributes with the testmode command in nl80211.
2029 */
2030
2031/* These enums need to be kept in sync with userspace */
2032enum hwsim_testmode_attr {
2033 __HWSIM_TM_ATTR_INVALID = 0,
2034 HWSIM_TM_ATTR_CMD = 1,
2035 HWSIM_TM_ATTR_PS = 2,
2036
2037 /* keep last */
2038 __HWSIM_TM_ATTR_AFTER_LAST,
2039 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
2040};
2041
2042enum hwsim_testmode_cmd {
2043 HWSIM_TM_CMD_SET_PS = 0,
2044 HWSIM_TM_CMD_GET_PS = 1,
2045 HWSIM_TM_CMD_STOP_QUEUES = 2,
2046 HWSIM_TM_CMD_WAKE_QUEUES = 3,
2047};
2048
2049static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
2050 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
2051 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
2052};
2053
2054static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
2055 struct ieee80211_vif *vif,
2056 void *data, int len)
2057{
2058 struct mac80211_hwsim_data *hwsim = hw->priv;
2059 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
2060 struct sk_buff *skb;
2061 int err, ps;
2062
2063 err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
2064 hwsim_testmode_policy, NULL);
2065 if (err)
2066 return err;
2067
2068 if (!tb[HWSIM_TM_ATTR_CMD])
2069 return -EINVAL;
2070
2071 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
2072 case HWSIM_TM_CMD_SET_PS:
2073 if (!tb[HWSIM_TM_ATTR_PS])
2074 return -EINVAL;
2075 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
2076 return hwsim_fops_ps_write(hwsim, ps);
2077 case HWSIM_TM_CMD_GET_PS:
2078 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
2079 nla_total_size(sizeof(u32)));
2080 if (!skb)
2081 return -ENOMEM;
2082 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
2083 goto nla_put_failure;
2084 return cfg80211_testmode_reply(skb);
2085 case HWSIM_TM_CMD_STOP_QUEUES:
2086 ieee80211_stop_queues(hw);
2087 return 0;
2088 case HWSIM_TM_CMD_WAKE_QUEUES:
2089 ieee80211_wake_queues(hw);
2090 return 0;
2091 default:
2092 return -EOPNOTSUPP;
2093 }
2094
2095 nla_put_failure:
2096 kfree_skb(skb);
2097 return -ENOBUFS;
2098}
2099#endif
2100
2101static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
2102 struct ieee80211_vif *vif,
2103 struct ieee80211_ampdu_params *params)
2104{
2105 struct ieee80211_sta *sta = params->sta;
2106 enum ieee80211_ampdu_mlme_action action = params->action;
2107 u16 tid = params->tid;
2108
2109 switch (action) {
2110 case IEEE80211_AMPDU_TX_START:
2111 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
2112 case IEEE80211_AMPDU_TX_STOP_CONT:
2113 case IEEE80211_AMPDU_TX_STOP_FLUSH:
2114 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2115 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2116 break;
2117 case IEEE80211_AMPDU_TX_OPERATIONAL:
2118 break;
2119 case IEEE80211_AMPDU_RX_START:
2120 case IEEE80211_AMPDU_RX_STOP:
2121 break;
2122 default:
2123 return -EOPNOTSUPP;
2124 }
2125
2126 return 0;
2127}
2128
2129static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2130 struct ieee80211_vif *vif,
2131 u32 queues, bool drop)
2132{
2133 /* Not implemented, queues only on kernel side */
2134}
2135
2136static void hw_scan_work(struct work_struct *work)
2137{
2138 struct mac80211_hwsim_data *hwsim =
2139 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2140 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2141 int dwell, i;
2142
2143 mutex_lock(&hwsim->mutex);
2144 if (hwsim->scan_chan_idx >= req->n_channels) {
2145 struct cfg80211_scan_info info = {
2146 .aborted = false,
2147 };
2148
2149 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2150 ieee80211_scan_completed(hwsim->hw, &info);
2151 hwsim->hw_scan_request = NULL;
2152 hwsim->hw_scan_vif = NULL;
2153 hwsim->tmp_chan = NULL;
2154 mutex_unlock(&hwsim->mutex);
2155 mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
2156 false);
2157 return;
2158 }
2159
2160 wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2161 req->channels[hwsim->scan_chan_idx]->center_freq);
2162
2163 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2164 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2165 IEEE80211_CHAN_RADAR) ||
2166 !req->n_ssids) {
2167 dwell = 120;
2168 } else {
2169 dwell = 30;
2170 /* send probes */
2171 for (i = 0; i < req->n_ssids; i++) {
2172 struct sk_buff *probe;
2173 struct ieee80211_mgmt *mgmt;
2174
2175 probe = ieee80211_probereq_get(hwsim->hw,
2176 hwsim->scan_addr,
2177 req->ssids[i].ssid,
2178 req->ssids[i].ssid_len,
2179 req->ie_len);
2180 if (!probe)
2181 continue;
2182
2183 mgmt = (struct ieee80211_mgmt *) probe->data;
2184 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2185 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2186
2187 if (req->ie_len)
2188 skb_put_data(probe, req->ie, req->ie_len);
2189
2190 local_bh_disable();
2191 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2192 hwsim->tmp_chan);
2193 local_bh_enable();
2194 }
2195 }
2196 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2197 msecs_to_jiffies(dwell));
2198 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2199 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2200 hwsim->survey_data[hwsim->scan_chan_idx].end =
2201 jiffies + msecs_to_jiffies(dwell);
2202 hwsim->scan_chan_idx++;
2203 mutex_unlock(&hwsim->mutex);
2204}
2205
2206static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2207 struct ieee80211_vif *vif,
2208 struct ieee80211_scan_request *hw_req)
2209{
2210 struct mac80211_hwsim_data *hwsim = hw->priv;
2211 struct cfg80211_scan_request *req = &hw_req->req;
2212
2213 mutex_lock(&hwsim->mutex);
2214 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2215 mutex_unlock(&hwsim->mutex);
2216 return -EBUSY;
2217 }
2218 hwsim->hw_scan_request = req;
2219 hwsim->hw_scan_vif = vif;
2220 hwsim->scan_chan_idx = 0;
2221 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2222 get_random_mask_addr(hwsim->scan_addr,
2223 hw_req->req.mac_addr,
2224 hw_req->req.mac_addr_mask);
2225 else
2226 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2227 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2228 mutex_unlock(&hwsim->mutex);
2229
2230 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2231 wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2232
2233 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2234
2235 return 0;
2236}
2237
2238static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2239 struct ieee80211_vif *vif)
2240{
2241 struct mac80211_hwsim_data *hwsim = hw->priv;
2242 struct cfg80211_scan_info info = {
2243 .aborted = true,
2244 };
2245
2246 wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2247
2248 cancel_delayed_work_sync(&hwsim->hw_scan);
2249
2250 mutex_lock(&hwsim->mutex);
2251 ieee80211_scan_completed(hwsim->hw, &info);
2252 hwsim->tmp_chan = NULL;
2253 hwsim->hw_scan_request = NULL;
2254 hwsim->hw_scan_vif = NULL;
2255 mutex_unlock(&hwsim->mutex);
2256}
2257
2258static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2259 struct ieee80211_vif *vif,
2260 const u8 *mac_addr)
2261{
2262 struct mac80211_hwsim_data *hwsim = hw->priv;
2263
2264 mutex_lock(&hwsim->mutex);
2265
2266 if (hwsim->scanning) {
2267 pr_debug("two hwsim sw_scans detected!\n");
2268 goto out;
2269 }
2270
2271 pr_debug("hwsim sw_scan request, prepping stuff\n");
2272
2273 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2274 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2275 hwsim->scanning = true;
2276 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2277
2278out:
2279 mutex_unlock(&hwsim->mutex);
2280}
2281
2282static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2283 struct ieee80211_vif *vif)
2284{
2285 struct mac80211_hwsim_data *hwsim = hw->priv;
2286
2287 mutex_lock(&hwsim->mutex);
2288
2289 pr_debug("hwsim sw_scan_complete\n");
2290 hwsim->scanning = false;
2291 mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
2292 eth_zero_addr(hwsim->scan_addr);
2293
2294 mutex_unlock(&hwsim->mutex);
2295}
2296
2297static void hw_roc_start(struct work_struct *work)
2298{
2299 struct mac80211_hwsim_data *hwsim =
2300 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2301
2302 mutex_lock(&hwsim->mutex);
2303
2304 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2305 hwsim->tmp_chan = hwsim->roc_chan;
2306 ieee80211_ready_on_channel(hwsim->hw);
2307
2308 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2309 msecs_to_jiffies(hwsim->roc_duration));
2310
2311 mutex_unlock(&hwsim->mutex);
2312}
2313
2314static void hw_roc_done(struct work_struct *work)
2315{
2316 struct mac80211_hwsim_data *hwsim =
2317 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2318
2319 mutex_lock(&hwsim->mutex);
2320 ieee80211_remain_on_channel_expired(hwsim->hw);
2321 hwsim->tmp_chan = NULL;
2322 mutex_unlock(&hwsim->mutex);
2323
2324 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2325}
2326
2327static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2328 struct ieee80211_vif *vif,
2329 struct ieee80211_channel *chan,
2330 int duration,
2331 enum ieee80211_roc_type type)
2332{
2333 struct mac80211_hwsim_data *hwsim = hw->priv;
2334
2335 mutex_lock(&hwsim->mutex);
2336 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2337 mutex_unlock(&hwsim->mutex);
2338 return -EBUSY;
2339 }
2340
2341 hwsim->roc_chan = chan;
2342 hwsim->roc_duration = duration;
2343 mutex_unlock(&hwsim->mutex);
2344
2345 wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2346 chan->center_freq, duration);
2347 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2348
2349 return 0;
2350}
2351
2352static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2353 struct ieee80211_vif *vif)
2354{
2355 struct mac80211_hwsim_data *hwsim = hw->priv;
2356
2357 cancel_delayed_work_sync(&hwsim->roc_start);
2358 cancel_delayed_work_sync(&hwsim->roc_done);
2359
2360 mutex_lock(&hwsim->mutex);
2361 hwsim->tmp_chan = NULL;
2362 mutex_unlock(&hwsim->mutex);
2363
2364 wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2365
2366 return 0;
2367}
2368
2369static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2370 struct ieee80211_chanctx_conf *ctx)
2371{
2372 hwsim_set_chanctx_magic(ctx);
2373 wiphy_dbg(hw->wiphy,
2374 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2375 ctx->def.chan->center_freq, ctx->def.width,
2376 ctx->def.center_freq1, ctx->def.center_freq2);
2377 return 0;
2378}
2379
2380static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2381 struct ieee80211_chanctx_conf *ctx)
2382{
2383 wiphy_dbg(hw->wiphy,
2384 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2385 ctx->def.chan->center_freq, ctx->def.width,
2386 ctx->def.center_freq1, ctx->def.center_freq2);
2387 hwsim_check_chanctx_magic(ctx);
2388 hwsim_clear_chanctx_magic(ctx);
2389}
2390
2391static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2392 struct ieee80211_chanctx_conf *ctx,
2393 u32 changed)
2394{
2395 hwsim_check_chanctx_magic(ctx);
2396 wiphy_dbg(hw->wiphy,
2397 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2398 ctx->def.chan->center_freq, ctx->def.width,
2399 ctx->def.center_freq1, ctx->def.center_freq2);
2400}
2401
2402static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2403 struct ieee80211_vif *vif,
2404 struct ieee80211_chanctx_conf *ctx)
2405{
2406 hwsim_check_magic(vif);
2407 hwsim_check_chanctx_magic(ctx);
2408
2409 return 0;
2410}
2411
2412static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2413 struct ieee80211_vif *vif,
2414 struct ieee80211_chanctx_conf *ctx)
2415{
2416 hwsim_check_magic(vif);
2417 hwsim_check_chanctx_magic(ctx);
2418}
2419
2420static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2421 "tx_pkts_nic",
2422 "tx_bytes_nic",
2423 "rx_pkts_nic",
2424 "rx_bytes_nic",
2425 "d_tx_dropped",
2426 "d_tx_failed",
2427 "d_ps_mode",
2428 "d_group",
2429};
2430
2431#define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2432
2433static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2434 struct ieee80211_vif *vif,
2435 u32 sset, u8 *data)
2436{
2437 if (sset == ETH_SS_STATS)
2438 memcpy(data, *mac80211_hwsim_gstrings_stats,
2439 sizeof(mac80211_hwsim_gstrings_stats));
2440}
2441
2442static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2443 struct ieee80211_vif *vif, int sset)
2444{
2445 if (sset == ETH_SS_STATS)
2446 return MAC80211_HWSIM_SSTATS_LEN;
2447 return 0;
2448}
2449
2450static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2451 struct ieee80211_vif *vif,
2452 struct ethtool_stats *stats, u64 *data)
2453{
2454 struct mac80211_hwsim_data *ar = hw->priv;
2455 int i = 0;
2456
2457 data[i++] = ar->tx_pkts;
2458 data[i++] = ar->tx_bytes;
2459 data[i++] = ar->rx_pkts;
2460 data[i++] = ar->rx_bytes;
2461 data[i++] = ar->tx_dropped;
2462 data[i++] = ar->tx_failed;
2463 data[i++] = ar->ps;
2464 data[i++] = ar->group;
2465
2466 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2467}
2468
2469static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
2470{
2471 return 1;
2472}
2473
2474#define HWSIM_COMMON_OPS \
2475 .tx = mac80211_hwsim_tx, \
2476 .start = mac80211_hwsim_start, \
2477 .stop = mac80211_hwsim_stop, \
2478 .add_interface = mac80211_hwsim_add_interface, \
2479 .change_interface = mac80211_hwsim_change_interface, \
2480 .remove_interface = mac80211_hwsim_remove_interface, \
2481 .config = mac80211_hwsim_config, \
2482 .configure_filter = mac80211_hwsim_configure_filter, \
2483 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2484 .tx_last_beacon = mac80211_hwsim_tx_last_beacon, \
2485 .sta_add = mac80211_hwsim_sta_add, \
2486 .sta_remove = mac80211_hwsim_sta_remove, \
2487 .sta_notify = mac80211_hwsim_sta_notify, \
2488 .set_tim = mac80211_hwsim_set_tim, \
2489 .conf_tx = mac80211_hwsim_conf_tx, \
2490 .get_survey = mac80211_hwsim_get_survey, \
2491 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2492 .ampdu_action = mac80211_hwsim_ampdu_action, \
2493 .flush = mac80211_hwsim_flush, \
2494 .get_tsf = mac80211_hwsim_get_tsf, \
2495 .set_tsf = mac80211_hwsim_set_tsf, \
2496 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2497 .get_et_stats = mac80211_hwsim_get_et_stats, \
2498 .get_et_strings = mac80211_hwsim_get_et_strings,
2499
2500static const struct ieee80211_ops mac80211_hwsim_ops = {
2501 HWSIM_COMMON_OPS
2502 .sw_scan_start = mac80211_hwsim_sw_scan,
2503 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2504};
2505
2506static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2507 HWSIM_COMMON_OPS
2508 .hw_scan = mac80211_hwsim_hw_scan,
2509 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2510 .sw_scan_start = NULL,
2511 .sw_scan_complete = NULL,
2512 .remain_on_channel = mac80211_hwsim_roc,
2513 .cancel_remain_on_channel = mac80211_hwsim_croc,
2514 .add_chanctx = mac80211_hwsim_add_chanctx,
2515 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2516 .change_chanctx = mac80211_hwsim_change_chanctx,
2517 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2518 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2519};
2520
2521struct hwsim_new_radio_params {
2522 unsigned int channels;
2523 const char *reg_alpha2;
2524 const struct ieee80211_regdomain *regd;
2525 bool reg_strict;
2526 bool p2p_device;
2527 bool use_chanctx;
2528 bool destroy_on_close;
2529 const char *hwname;
2530 bool no_vif;
2531 const u8 *perm_addr;
2532 u32 iftypes;
2533 u32 *ciphers;
2534 u8 n_ciphers;
2535};
2536
2537static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2538 struct genl_info *info)
2539{
2540 if (info)
2541 genl_notify(&hwsim_genl_family, mcast_skb, info,
2542 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2543 else
2544 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2545 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2546}
2547
2548static int append_radio_msg(struct sk_buff *skb, int id,
2549 struct hwsim_new_radio_params *param)
2550{
2551 int ret;
2552
2553 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2554 if (ret < 0)
2555 return ret;
2556
2557 if (param->channels) {
2558 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2559 if (ret < 0)
2560 return ret;
2561 }
2562
2563 if (param->reg_alpha2) {
2564 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2565 param->reg_alpha2);
2566 if (ret < 0)
2567 return ret;
2568 }
2569
2570 if (param->regd) {
2571 int i;
2572
2573 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2574 if (hwsim_world_regdom_custom[i] != param->regd)
2575 continue;
2576
2577 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2578 if (ret < 0)
2579 return ret;
2580 break;
2581 }
2582 }
2583
2584 if (param->reg_strict) {
2585 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2586 if (ret < 0)
2587 return ret;
2588 }
2589
2590 if (param->p2p_device) {
2591 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2592 if (ret < 0)
2593 return ret;
2594 }
2595
2596 if (param->use_chanctx) {
2597 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2598 if (ret < 0)
2599 return ret;
2600 }
2601
2602 if (param->hwname) {
2603 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2604 strlen(param->hwname), param->hwname);
2605 if (ret < 0)
2606 return ret;
2607 }
2608
2609 return 0;
2610}
2611
2612static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2613 struct hwsim_new_radio_params *param)
2614{
2615 struct sk_buff *mcast_skb;
2616 void *data;
2617
2618 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2619 if (!mcast_skb)
2620 return;
2621
2622 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2623 HWSIM_CMD_NEW_RADIO);
2624 if (!data)
2625 goto out_err;
2626
2627 if (append_radio_msg(mcast_skb, id, param) < 0)
2628 goto out_err;
2629
2630 genlmsg_end(mcast_skb, data);
2631
2632 hwsim_mcast_config_msg(mcast_skb, info);
2633 return;
2634
2635out_err:
2636 nlmsg_free(mcast_skb);
2637}
2638
2639static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2640 {
2641 /* TODO: should we support other types, e.g., P2P?*/
2642 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2643 BIT(NL80211_IFTYPE_AP),
2644 .he_cap = {
2645 .has_he = true,
2646 .he_cap_elem = {
2647 .mac_cap_info[0] =
2648 IEEE80211_HE_MAC_CAP0_HTC_HE,
2649 .mac_cap_info[1] =
2650 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2651 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2652 .mac_cap_info[2] =
2653 IEEE80211_HE_MAC_CAP2_BSR |
2654 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2655 IEEE80211_HE_MAC_CAP2_ACK_EN,
2656 .mac_cap_info[3] =
2657 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2658 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2659 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2660 .phy_cap_info[1] =
2661 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2662 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2663 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2664 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2665 .phy_cap_info[2] =
2666 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2667 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2668 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2669 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2670 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2671
2672 /* Leave all the other PHY capability bytes
2673 * unset, as DCM, beam forming, RU and PPE
2674 * threshold information are not supported
2675 */
2676 },
2677 .he_mcs_nss_supp = {
2678 .rx_mcs_80 = cpu_to_le16(0xfffa),
2679 .tx_mcs_80 = cpu_to_le16(0xfffa),
2680 .rx_mcs_160 = cpu_to_le16(0xffff),
2681 .tx_mcs_160 = cpu_to_le16(0xffff),
2682 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2683 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2684 },
2685 },
2686 },
2687#ifdef CONFIG_MAC80211_MESH
2688 {
2689 /* TODO: should we support other types, e.g., IBSS?*/
2690 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2691 .he_cap = {
2692 .has_he = true,
2693 .he_cap_elem = {
2694 .mac_cap_info[0] =
2695 IEEE80211_HE_MAC_CAP0_HTC_HE,
2696 .mac_cap_info[1] =
2697 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2698 .mac_cap_info[2] =
2699 IEEE80211_HE_MAC_CAP2_ACK_EN,
2700 .mac_cap_info[3] =
2701 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2702 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2703 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2704 .phy_cap_info[1] =
2705 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2706 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2707 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2708 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2709 .phy_cap_info[2] = 0,
2710
2711 /* Leave all the other PHY capability bytes
2712 * unset, as DCM, beam forming, RU and PPE
2713 * threshold information are not supported
2714 */
2715 },
2716 .he_mcs_nss_supp = {
2717 .rx_mcs_80 = cpu_to_le16(0xfffa),
2718 .tx_mcs_80 = cpu_to_le16(0xfffa),
2719 .rx_mcs_160 = cpu_to_le16(0xffff),
2720 .tx_mcs_160 = cpu_to_le16(0xffff),
2721 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2722 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2723 },
2724 },
2725 },
2726#endif
2727};
2728
2729static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2730 {
2731 /* TODO: should we support other types, e.g., P2P?*/
2732 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2733 BIT(NL80211_IFTYPE_AP),
2734 .he_cap = {
2735 .has_he = true,
2736 .he_cap_elem = {
2737 .mac_cap_info[0] =
2738 IEEE80211_HE_MAC_CAP0_HTC_HE,
2739 .mac_cap_info[1] =
2740 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2741 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2742 .mac_cap_info[2] =
2743 IEEE80211_HE_MAC_CAP2_BSR |
2744 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2745 IEEE80211_HE_MAC_CAP2_ACK_EN,
2746 .mac_cap_info[3] =
2747 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2748 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2749 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2750 .phy_cap_info[0] =
2751 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2752 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2753 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2754 .phy_cap_info[1] =
2755 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2756 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2757 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2758 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2759 .phy_cap_info[2] =
2760 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2761 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2762 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2763 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2764 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2765
2766 /* Leave all the other PHY capability bytes
2767 * unset, as DCM, beam forming, RU and PPE
2768 * threshold information are not supported
2769 */
2770 },
2771 .he_mcs_nss_supp = {
2772 .rx_mcs_80 = cpu_to_le16(0xfffa),
2773 .tx_mcs_80 = cpu_to_le16(0xfffa),
2774 .rx_mcs_160 = cpu_to_le16(0xfffa),
2775 .tx_mcs_160 = cpu_to_le16(0xfffa),
2776 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2777 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2778 },
2779 },
2780 },
2781#ifdef CONFIG_MAC80211_MESH
2782 {
2783 /* TODO: should we support other types, e.g., IBSS?*/
2784 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2785 .he_cap = {
2786 .has_he = true,
2787 .he_cap_elem = {
2788 .mac_cap_info[0] =
2789 IEEE80211_HE_MAC_CAP0_HTC_HE,
2790 .mac_cap_info[1] =
2791 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2792 .mac_cap_info[2] =
2793 IEEE80211_HE_MAC_CAP2_ACK_EN,
2794 .mac_cap_info[3] =
2795 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2796 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2797 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2798 .phy_cap_info[0] =
2799 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2800 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2801 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2802 .phy_cap_info[1] =
2803 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2804 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2805 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2806 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2807 .phy_cap_info[2] = 0,
2808
2809 /* Leave all the other PHY capability bytes
2810 * unset, as DCM, beam forming, RU and PPE
2811 * threshold information are not supported
2812 */
2813 },
2814 .he_mcs_nss_supp = {
2815 .rx_mcs_80 = cpu_to_le16(0xfffa),
2816 .tx_mcs_80 = cpu_to_le16(0xfffa),
2817 .rx_mcs_160 = cpu_to_le16(0xfffa),
2818 .tx_mcs_160 = cpu_to_le16(0xfffa),
2819 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2820 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2821 },
2822 },
2823 },
2824#endif
2825};
2826
2827static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2828{
2829 u16 n_iftype_data;
2830
2831 if (sband->band == NL80211_BAND_2GHZ) {
2832 n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2833 sband->iftype_data =
2834 (struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2835 } else if (sband->band == NL80211_BAND_5GHZ) {
2836 n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
2837 sband->iftype_data =
2838 (struct ieee80211_sband_iftype_data *)he_capa_5ghz;
2839 } else {
2840 return;
2841 }
2842
2843 sband->n_iftype_data = n_iftype_data;
2844}
2845
2846#ifdef CONFIG_MAC80211_MESH
2847#define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2848#else
2849#define HWSIM_MESH_BIT 0
2850#endif
2851
2852#define HWSIM_DEFAULT_IF_LIMIT \
2853 (BIT(NL80211_IFTYPE_STATION) | \
2854 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2855 BIT(NL80211_IFTYPE_AP) | \
2856 BIT(NL80211_IFTYPE_P2P_GO) | \
2857 HWSIM_MESH_BIT)
2858
2859#define HWSIM_IFTYPE_SUPPORT_MASK \
2860 (BIT(NL80211_IFTYPE_STATION) | \
2861 BIT(NL80211_IFTYPE_AP) | \
2862 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2863 BIT(NL80211_IFTYPE_P2P_GO) | \
2864 BIT(NL80211_IFTYPE_ADHOC) | \
2865 BIT(NL80211_IFTYPE_MESH_POINT) | \
2866 BIT(NL80211_IFTYPE_OCB))
2867
2868static int mac80211_hwsim_new_radio(struct genl_info *info,
2869 struct hwsim_new_radio_params *param)
2870{
2871 int err;
2872 u8 addr[ETH_ALEN];
2873 struct mac80211_hwsim_data *data;
2874 struct ieee80211_hw *hw;
2875 enum nl80211_band band;
2876 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2877 struct net *net;
2878 int idx, i;
2879 int n_limits = 0;
2880
2881 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2882 return -EINVAL;
2883
2884 spin_lock_bh(&hwsim_radio_lock);
2885 idx = hwsim_radio_idx++;
2886 spin_unlock_bh(&hwsim_radio_lock);
2887
2888 if (param->use_chanctx)
2889 ops = &mac80211_hwsim_mchan_ops;
2890 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2891 if (!hw) {
2892 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2893 err = -ENOMEM;
2894 goto failed;
2895 }
2896
2897 /* ieee80211_alloc_hw_nm may have used a default name */
2898 param->hwname = wiphy_name(hw->wiphy);
2899
2900 if (info)
2901 net = genl_info_net(info);
2902 else
2903 net = &init_net;
2904 wiphy_net_set(hw->wiphy, net);
2905
2906 data = hw->priv;
2907 data->hw = hw;
2908
2909 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2910 if (IS_ERR(data->dev)) {
2911 printk(KERN_DEBUG
2912 "mac80211_hwsim: device_create failed (%ld)\n",
2913 PTR_ERR(data->dev));
2914 err = -ENOMEM;
2915 goto failed_drvdata;
2916 }
2917 data->dev->driver = &mac80211_hwsim_driver.driver;
2918 err = device_bind_driver(data->dev);
2919 if (err != 0) {
2920 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2921 err);
2922 goto failed_bind;
2923 }
2924
2925 skb_queue_head_init(&data->pending);
2926
2927 SET_IEEE80211_DEV(hw, data->dev);
2928 if (!param->perm_addr) {
2929 eth_zero_addr(addr);
2930 addr[0] = 0x02;
2931 addr[3] = idx >> 8;
2932 addr[4] = idx;
2933 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2934 /* Why need here second address ? */
2935 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2936 data->addresses[1].addr[0] |= 0x40;
2937 hw->wiphy->n_addresses = 2;
2938 hw->wiphy->addresses = data->addresses;
2939 /* possible address clash is checked at hash table insertion */
2940 } else {
2941 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
2942 /* compatibility with automatically generated mac addr */
2943 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
2944 hw->wiphy->n_addresses = 2;
2945 hw->wiphy->addresses = data->addresses;
2946 }
2947
2948 data->channels = param->channels;
2949 data->use_chanctx = param->use_chanctx;
2950 data->idx = idx;
2951 data->destroy_on_close = param->destroy_on_close;
2952 if (info)
2953 data->portid = info->snd_portid;
2954
2955 /* setup interface limits, only on interface types we support */
2956 if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
2957 data->if_limits[n_limits].max = 1;
2958 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
2959 n_limits++;
2960 }
2961
2962 if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
2963 data->if_limits[n_limits].max = 2048;
2964 /*
2965 * For this case, we may only support a subset of
2966 * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
2967 * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
2968 */
2969 data->if_limits[n_limits].types =
2970 HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
2971 n_limits++;
2972 }
2973
2974 if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
2975 data->if_limits[n_limits].max = 1;
2976 data->if_limits[n_limits].types =
2977 BIT(NL80211_IFTYPE_P2P_DEVICE);
2978 n_limits++;
2979 }
2980
2981 if (data->use_chanctx) {
2982 hw->wiphy->max_scan_ssids = 255;
2983 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2984 hw->wiphy->max_remain_on_channel_duration = 1000;
2985 data->if_combination.radar_detect_widths = 0;
2986 data->if_combination.num_different_channels = data->channels;
2987 } else {
2988 data->if_combination.num_different_channels = 1;
2989 data->if_combination.radar_detect_widths =
2990 BIT(NL80211_CHAN_WIDTH_5) |
2991 BIT(NL80211_CHAN_WIDTH_10) |
2992 BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2993 BIT(NL80211_CHAN_WIDTH_20) |
2994 BIT(NL80211_CHAN_WIDTH_40) |
2995 BIT(NL80211_CHAN_WIDTH_80) |
2996 BIT(NL80211_CHAN_WIDTH_160);
2997 }
2998
2999 if (!n_limits) {
3000 err = -EINVAL;
3001 goto failed_hw;
3002 }
3003
3004 data->if_combination.max_interfaces = 0;
3005 for (i = 0; i < n_limits; i++)
3006 data->if_combination.max_interfaces +=
3007 data->if_limits[i].max;
3008
3009 data->if_combination.n_limits = n_limits;
3010 data->if_combination.limits = data->if_limits;
3011
3012 /*
3013 * If we actually were asked to support combinations,
3014 * advertise them - if there's only a single thing like
3015 * only IBSS then don't advertise it as combinations.
3016 */
3017 if (data->if_combination.max_interfaces > 1) {
3018 hw->wiphy->iface_combinations = &data->if_combination;
3019 hw->wiphy->n_iface_combinations = 1;
3020 }
3021
3022 if (param->ciphers) {
3023 memcpy(data->ciphers, param->ciphers,
3024 param->n_ciphers * sizeof(u32));
3025 hw->wiphy->cipher_suites = data->ciphers;
3026 hw->wiphy->n_cipher_suites = param->n_ciphers;
3027 }
3028
3029 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
3030 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
3031 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
3032
3033 hw->queues = 5;
3034 hw->offchannel_tx_hw_queue = 4;
3035
3036 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
3037 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
3038 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
3039 ieee80211_hw_set(hw, QUEUE_CONTROL);
3040 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
3041 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
3042 ieee80211_hw_set(hw, MFP_CAPABLE);
3043 ieee80211_hw_set(hw, SIGNAL_DBM);
3044 ieee80211_hw_set(hw, SUPPORTS_PS);
3045 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
3046 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
3047 ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
3048 ieee80211_hw_set(hw, TDLS_WIDER_BW);
3049 if (rctbl)
3050 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
3051 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
3052
3053 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3054 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
3055 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3056 WIPHY_FLAG_AP_UAPSD |
3057 WIPHY_FLAG_SUPPORTS_5_10_MHZ |
3058 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
3059 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
3060 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
3061 NL80211_FEATURE_STATIC_SMPS |
3062 NL80211_FEATURE_DYNAMIC_SMPS |
3063 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
3064 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
3065 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
3066 wiphy_ext_feature_set(hw->wiphy,
3067 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
3068 wiphy_ext_feature_set(hw->wiphy,
3069 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
3070
3071 hw->wiphy->interface_modes = param->iftypes;
3072
3073 /* ask mac80211 to reserve space for magic */
3074 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
3075 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
3076 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
3077
3078 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
3079 sizeof(hwsim_channels_2ghz));
3080 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
3081 sizeof(hwsim_channels_5ghz));
3082 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
3083
3084 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3085 struct ieee80211_supported_band *sband = &data->bands[band];
3086
3087 sband->band = band;
3088
3089 switch (band) {
3090 case NL80211_BAND_2GHZ:
3091 sband->channels = data->channels_2ghz;
3092 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
3093 sband->bitrates = data->rates;
3094 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
3095 break;
3096 case NL80211_BAND_5GHZ:
3097 sband->channels = data->channels_5ghz;
3098 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
3099 sband->bitrates = data->rates + 4;
3100 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3101
3102 sband->vht_cap.vht_supported = true;
3103 sband->vht_cap.cap =
3104 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
3105 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
3106 IEEE80211_VHT_CAP_RXLDPC |
3107 IEEE80211_VHT_CAP_SHORT_GI_80 |
3108 IEEE80211_VHT_CAP_SHORT_GI_160 |
3109 IEEE80211_VHT_CAP_TXSTBC |
3110 IEEE80211_VHT_CAP_RXSTBC_4 |
3111 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
3112 sband->vht_cap.vht_mcs.rx_mcs_map =
3113 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
3114 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
3115 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
3116 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
3117 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
3118 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
3119 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
3120 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
3121 sband->vht_cap.vht_mcs.tx_mcs_map =
3122 sband->vht_cap.vht_mcs.rx_mcs_map;
3123 break;
3124 default:
3125 continue;
3126 }
3127
3128 sband->ht_cap.ht_supported = true;
3129 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
3130 IEEE80211_HT_CAP_GRN_FLD |
3131 IEEE80211_HT_CAP_SGI_20 |
3132 IEEE80211_HT_CAP_SGI_40 |
3133 IEEE80211_HT_CAP_DSSSCCK40;
3134 sband->ht_cap.ampdu_factor = 0x3;
3135 sband->ht_cap.ampdu_density = 0x6;
3136 memset(&sband->ht_cap.mcs, 0,
3137 sizeof(sband->ht_cap.mcs));
3138 sband->ht_cap.mcs.rx_mask[0] = 0xff;
3139 sband->ht_cap.mcs.rx_mask[1] = 0xff;
3140 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3141
3142 mac80211_hwsim_he_capab(sband);
3143
3144 hw->wiphy->bands[band] = sband;
3145 }
3146
3147 /* By default all radios belong to the first group */
3148 data->group = 1;
3149 mutex_init(&data->mutex);
3150
3151 data->netgroup = hwsim_net_get_netgroup(net);
3152 data->wmediumd = hwsim_net_get_wmediumd(net);
3153
3154 /* Enable frame retransmissions for lossy channels */
3155 hw->max_rates = 4;
3156 hw->max_rate_tries = 11;
3157
3158 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3159 hw->wiphy->n_vendor_commands =
3160 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3161 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3162 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3163
3164 if (param->reg_strict)
3165 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3166 if (param->regd) {
3167 data->regd = param->regd;
3168 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3169 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3170 /* give the regulatory workqueue a chance to run */
3171 schedule_timeout_interruptible(1);
3172 }
3173
3174 if (param->no_vif)
3175 ieee80211_hw_set(hw, NO_AUTO_VIF);
3176
3177 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3178
3179 hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3180 HRTIMER_MODE_ABS_SOFT);
3181 data->beacon_timer.function = mac80211_hwsim_beacon;
3182
3183 err = ieee80211_register_hw(hw);
3184 if (err < 0) {
3185 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3186 err);
3187 goto failed_hw;
3188 }
3189
3190 wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3191
3192 if (param->reg_alpha2) {
3193 data->alpha2[0] = param->reg_alpha2[0];
3194 data->alpha2[1] = param->reg_alpha2[1];
3195 regulatory_hint(hw->wiphy, param->reg_alpha2);
3196 }
3197
3198 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3199 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3200 debugfs_create_file("group", 0666, data->debugfs, data,
3201 &hwsim_fops_group);
3202 if (!data->use_chanctx)
3203 debugfs_create_file("dfs_simulate_radar", 0222,
3204 data->debugfs,
3205 data, &hwsim_simulate_radar);
3206
3207 spin_lock_bh(&hwsim_radio_lock);
3208 err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3209 hwsim_rht_params);
3210 if (err < 0) {
3211 if (info) {
3212 GENL_SET_ERR_MSG(info, "perm addr already present");
3213 NL_SET_BAD_ATTR(info->extack,
3214 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3215 }
3216 spin_unlock_bh(&hwsim_radio_lock);
3217 goto failed_final_insert;
3218 }
3219
3220 list_add_tail(&data->list, &hwsim_radios);
3221 hwsim_radios_generation++;
3222 spin_unlock_bh(&hwsim_radio_lock);
3223
3224 hwsim_mcast_new_radio(idx, info, param);
3225
3226 return idx;
3227
3228failed_final_insert:
3229 debugfs_remove_recursive(data->debugfs);
3230 ieee80211_unregister_hw(data->hw);
3231failed_hw:
3232 device_release_driver(data->dev);
3233failed_bind:
3234 device_unregister(data->dev);
3235failed_drvdata:
3236 ieee80211_free_hw(hw);
3237failed:
3238 return err;
3239}
3240
3241static void hwsim_mcast_del_radio(int id, const char *hwname,
3242 struct genl_info *info)
3243{
3244 struct sk_buff *skb;
3245 void *data;
3246 int ret;
3247
3248 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3249 if (!skb)
3250 return;
3251
3252 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3253 HWSIM_CMD_DEL_RADIO);
3254 if (!data)
3255 goto error;
3256
3257 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3258 if (ret < 0)
3259 goto error;
3260
3261 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3262 hwname);
3263 if (ret < 0)
3264 goto error;
3265
3266 genlmsg_end(skb, data);
3267
3268 hwsim_mcast_config_msg(skb, info);
3269
3270 return;
3271
3272error:
3273 nlmsg_free(skb);
3274}
3275
3276static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3277 const char *hwname,
3278 struct genl_info *info)
3279{
3280 hwsim_mcast_del_radio(data->idx, hwname, info);
3281 debugfs_remove_recursive(data->debugfs);
3282 ieee80211_unregister_hw(data->hw);
3283 device_release_driver(data->dev);
3284 device_unregister(data->dev);
3285 ieee80211_free_hw(data->hw);
3286}
3287
3288static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3289 struct mac80211_hwsim_data *data,
3290 u32 portid, u32 seq,
3291 struct netlink_callback *cb, int flags)
3292{
3293 void *hdr;
3294 struct hwsim_new_radio_params param = { };
3295 int res = -EMSGSIZE;
3296
3297 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3298 HWSIM_CMD_GET_RADIO);
3299 if (!hdr)
3300 return -EMSGSIZE;
3301
3302 if (cb)
3303 genl_dump_check_consistent(cb, hdr);
3304
3305 if (data->alpha2[0] && data->alpha2[1])
3306 param.reg_alpha2 = data->alpha2;
3307
3308 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3309 REGULATORY_STRICT_REG);
3310 param.p2p_device = !!(data->hw->wiphy->interface_modes &
3311 BIT(NL80211_IFTYPE_P2P_DEVICE));
3312 param.use_chanctx = data->use_chanctx;
3313 param.regd = data->regd;
3314 param.channels = data->channels;
3315 param.hwname = wiphy_name(data->hw->wiphy);
3316
3317 res = append_radio_msg(skb, data->idx, ¶m);
3318 if (res < 0)
3319 goto out_err;
3320
3321 genlmsg_end(skb, hdr);
3322 return 0;
3323
3324out_err:
3325 genlmsg_cancel(skb, hdr);
3326 return res;
3327}
3328
3329static void mac80211_hwsim_free(void)
3330{
3331 struct mac80211_hwsim_data *data;
3332
3333 spin_lock_bh(&hwsim_radio_lock);
3334 while ((data = list_first_entry_or_null(&hwsim_radios,
3335 struct mac80211_hwsim_data,
3336 list))) {
3337 list_del(&data->list);
3338 spin_unlock_bh(&hwsim_radio_lock);
3339 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3340 NULL);
3341 spin_lock_bh(&hwsim_radio_lock);
3342 }
3343 spin_unlock_bh(&hwsim_radio_lock);
3344 class_destroy(hwsim_class);
3345}
3346
3347static const struct net_device_ops hwsim_netdev_ops = {
3348 .ndo_start_xmit = hwsim_mon_xmit,
3349 .ndo_set_mac_address = eth_mac_addr,
3350 .ndo_validate_addr = eth_validate_addr,
3351};
3352
3353static void hwsim_mon_setup(struct net_device *dev)
3354{
3355 dev->netdev_ops = &hwsim_netdev_ops;
3356 dev->needs_free_netdev = true;
3357 ether_setup(dev);
3358 dev->priv_flags |= IFF_NO_QUEUE;
3359 dev->type = ARPHRD_IEEE80211_RADIOTAP;
3360 eth_zero_addr(dev->dev_addr);
3361 dev->dev_addr[0] = 0x12;
3362}
3363
3364static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3365{
3366 return rhashtable_lookup_fast(&hwsim_radios_rht,
3367 addr,
3368 hwsim_rht_params);
3369}
3370
3371static void hwsim_register_wmediumd(struct net *net, u32 portid)
3372{
3373 struct mac80211_hwsim_data *data;
3374
3375 hwsim_net_set_wmediumd(net, portid);
3376
3377 spin_lock_bh(&hwsim_radio_lock);
3378 list_for_each_entry(data, &hwsim_radios, list) {
3379 if (data->netgroup == hwsim_net_get_netgroup(net))
3380 data->wmediumd = portid;
3381 }
3382 spin_unlock_bh(&hwsim_radio_lock);
3383}
3384
3385static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3386 struct genl_info *info)
3387{
3388
3389 struct ieee80211_hdr *hdr;
3390 struct mac80211_hwsim_data *data2;
3391 struct ieee80211_tx_info *txi;
3392 struct hwsim_tx_rate *tx_attempts;
3393 u64 ret_skb_cookie;
3394 struct sk_buff *skb, *tmp;
3395 const u8 *src;
3396 unsigned int hwsim_flags;
3397 int i;
3398 bool found = false;
3399
3400 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3401 !info->attrs[HWSIM_ATTR_FLAGS] ||
3402 !info->attrs[HWSIM_ATTR_COOKIE] ||
3403 !info->attrs[HWSIM_ATTR_SIGNAL] ||
3404 !info->attrs[HWSIM_ATTR_TX_INFO])
3405 goto out;
3406
3407 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3408 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3409 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3410
3411 data2 = get_hwsim_data_ref_from_addr(src);
3412 if (!data2)
3413 goto out;
3414
3415 if (!hwsim_virtio_enabled) {
3416 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3417 data2->netgroup)
3418 goto out;
3419
3420 if (info->snd_portid != data2->wmediumd)
3421 goto out;
3422 }
3423
3424 /* look for the skb matching the cookie passed back from user */
3425 skb_queue_walk_safe(&data2->pending, skb, tmp) {
3426 u64 skb_cookie;
3427
3428 txi = IEEE80211_SKB_CB(skb);
3429 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3430
3431 if (skb_cookie == ret_skb_cookie) {
3432 skb_unlink(skb, &data2->pending);
3433 found = true;
3434 break;
3435 }
3436 }
3437
3438 /* not found */
3439 if (!found)
3440 goto out;
3441
3442 /* Tx info received because the frame was broadcasted on user space,
3443 so we get all the necessary info: tx attempts and skb control buff */
3444
3445 tx_attempts = (struct hwsim_tx_rate *)nla_data(
3446 info->attrs[HWSIM_ATTR_TX_INFO]);
3447
3448 /* now send back TX status */
3449 txi = IEEE80211_SKB_CB(skb);
3450
3451 ieee80211_tx_info_clear_status(txi);
3452
3453 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3454 txi->status.rates[i].idx = tx_attempts[i].idx;
3455 txi->status.rates[i].count = tx_attempts[i].count;
3456 }
3457
3458 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3459
3460 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3461 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3462 if (skb->len >= 16) {
3463 hdr = (struct ieee80211_hdr *) skb->data;
3464 mac80211_hwsim_monitor_ack(data2->channel,
3465 hdr->addr2);
3466 }
3467 txi->flags |= IEEE80211_TX_STAT_ACK;
3468 }
3469 ieee80211_tx_status_irqsafe(data2->hw, skb);
3470 return 0;
3471out:
3472 return -EINVAL;
3473
3474}
3475
3476static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3477 struct genl_info *info)
3478{
3479 struct mac80211_hwsim_data *data2;
3480 struct ieee80211_rx_status rx_status;
3481 struct ieee80211_hdr *hdr;
3482 const u8 *dst;
3483 int frame_data_len;
3484 void *frame_data;
3485 struct sk_buff *skb = NULL;
3486
3487 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3488 !info->attrs[HWSIM_ATTR_FRAME] ||
3489 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3490 !info->attrs[HWSIM_ATTR_SIGNAL])
3491 goto out;
3492
3493 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3494 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3495 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3496
3497 /* Allocate new skb here */
3498 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3499 if (skb == NULL)
3500 goto err;
3501
3502 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3503 goto err;
3504
3505 /* Copy the data */
3506 skb_put_data(skb, frame_data, frame_data_len);
3507
3508 data2 = get_hwsim_data_ref_from_addr(dst);
3509 if (!data2)
3510 goto out;
3511
3512 if (!hwsim_virtio_enabled) {
3513 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3514 data2->netgroup)
3515 goto out;
3516
3517 if (info->snd_portid != data2->wmediumd)
3518 goto out;
3519 }
3520
3521 /* check if radio is configured properly */
3522
3523 if (data2->idle || !data2->started)
3524 goto out;
3525
3526 /* A frame is received from user space */
3527 memset(&rx_status, 0, sizeof(rx_status));
3528 if (info->attrs[HWSIM_ATTR_FREQ]) {
3529 /* throw away off-channel packets, but allow both the temporary
3530 * ("hw" scan/remain-on-channel) and regular channel, since the
3531 * internal datapath also allows this
3532 */
3533 mutex_lock(&data2->mutex);
3534 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3535
3536 if (rx_status.freq != data2->channel->center_freq &&
3537 (!data2->tmp_chan ||
3538 rx_status.freq != data2->tmp_chan->center_freq)) {
3539 mutex_unlock(&data2->mutex);
3540 goto out;
3541 }
3542 mutex_unlock(&data2->mutex);
3543 } else {
3544 rx_status.freq = data2->channel->center_freq;
3545 }
3546
3547 rx_status.band = data2->channel->band;
3548 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3549 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3550
3551 hdr = (void *)skb->data;
3552
3553 if (ieee80211_is_beacon(hdr->frame_control) ||
3554 ieee80211_is_probe_resp(hdr->frame_control))
3555 rx_status.boottime_ns = ktime_get_boottime_ns();
3556
3557 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3558 data2->rx_pkts++;
3559 data2->rx_bytes += skb->len;
3560 ieee80211_rx_irqsafe(data2->hw, skb);
3561
3562 return 0;
3563err:
3564 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3565out:
3566 dev_kfree_skb(skb);
3567 return -EINVAL;
3568}
3569
3570static int hwsim_register_received_nl(struct sk_buff *skb_2,
3571 struct genl_info *info)
3572{
3573 struct net *net = genl_info_net(info);
3574 struct mac80211_hwsim_data *data;
3575 int chans = 1;
3576
3577 spin_lock_bh(&hwsim_radio_lock);
3578 list_for_each_entry(data, &hwsim_radios, list)
3579 chans = max(chans, data->channels);
3580 spin_unlock_bh(&hwsim_radio_lock);
3581
3582 /* In the future we should revise the userspace API and allow it
3583 * to set a flag that it does support multi-channel, then we can
3584 * let this pass conditionally on the flag.
3585 * For current userspace, prohibit it since it won't work right.
3586 */
3587 if (chans > 1)
3588 return -EOPNOTSUPP;
3589
3590 if (hwsim_net_get_wmediumd(net))
3591 return -EBUSY;
3592
3593 hwsim_register_wmediumd(net, info->snd_portid);
3594
3595 pr_debug("mac80211_hwsim: received a REGISTER, "
3596 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3597
3598 return 0;
3599}
3600
3601/* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3602static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3603{
3604 int i;
3605
3606 for (i = 0; i < n_ciphers; i++) {
3607 int j;
3608 int found = 0;
3609
3610 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3611 if (ciphers[i] == hwsim_ciphers[j]) {
3612 found = 1;
3613 break;
3614 }
3615 }
3616
3617 if (!found)
3618 return false;
3619 }
3620
3621 return true;
3622}
3623
3624static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3625{
3626 struct hwsim_new_radio_params param = { 0 };
3627 const char *hwname = NULL;
3628 int ret;
3629
3630 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3631 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3632 param.channels = channels;
3633 param.destroy_on_close =
3634 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3635
3636 if (info->attrs[HWSIM_ATTR_CHANNELS])
3637 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3638
3639 if (param.channels < 1) {
3640 GENL_SET_ERR_MSG(info, "must have at least one channel");
3641 return -EINVAL;
3642 }
3643
3644 if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3645 GENL_SET_ERR_MSG(info, "too many channels specified");
3646 return -EINVAL;
3647 }
3648
3649 if (info->attrs[HWSIM_ATTR_NO_VIF])
3650 param.no_vif = true;
3651
3652 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3653 param.use_chanctx = true;
3654 else
3655 param.use_chanctx = (param.channels > 1);
3656
3657 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3658 param.reg_alpha2 =
3659 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3660
3661 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3662 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3663
3664 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3665 return -EINVAL;
3666
3667 idx = array_index_nospec(idx,
3668 ARRAY_SIZE(hwsim_world_regdom_custom));
3669 param.regd = hwsim_world_regdom_custom[idx];
3670 }
3671
3672 if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3673 if (!is_valid_ether_addr(
3674 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3675 GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3676 NL_SET_BAD_ATTR(info->extack,
3677 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3678 return -EINVAL;
3679 }
3680
3681 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3682 }
3683
3684 if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3685 param.iftypes =
3686 nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3687
3688 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3689 NL_SET_ERR_MSG_ATTR(info->extack,
3690 info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3691 "cannot support more iftypes than kernel");
3692 return -EINVAL;
3693 }
3694 } else {
3695 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3696 }
3697
3698 /* ensure both flag and iftype support is honored */
3699 if (param.p2p_device ||
3700 param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3701 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3702 param.p2p_device = true;
3703 }
3704
3705 if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3706 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3707
3708 param.ciphers =
3709 nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3710
3711 if (len % sizeof(u32)) {
3712 NL_SET_ERR_MSG_ATTR(info->extack,
3713 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3714 "bad cipher list length");
3715 return -EINVAL;
3716 }
3717
3718 param.n_ciphers = len / sizeof(u32);
3719
3720 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3721 NL_SET_ERR_MSG_ATTR(info->extack,
3722 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3723 "too many ciphers specified");
3724 return -EINVAL;
3725 }
3726
3727 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3728 NL_SET_ERR_MSG_ATTR(info->extack,
3729 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3730 "unsupported ciphers specified");
3731 return -EINVAL;
3732 }
3733 }
3734
3735 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3736 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3737 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3738 GFP_KERNEL);
3739 if (!hwname)
3740 return -ENOMEM;
3741 param.hwname = hwname;
3742 }
3743
3744 ret = mac80211_hwsim_new_radio(info, ¶m);
3745 kfree(hwname);
3746 return ret;
3747}
3748
3749static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3750{
3751 struct mac80211_hwsim_data *data;
3752 s64 idx = -1;
3753 const char *hwname = NULL;
3754
3755 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3756 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3757 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3758 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3759 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3760 GFP_KERNEL);
3761 if (!hwname)
3762 return -ENOMEM;
3763 } else
3764 return -EINVAL;
3765
3766 spin_lock_bh(&hwsim_radio_lock);
3767 list_for_each_entry(data, &hwsim_radios, list) {
3768 if (idx >= 0) {
3769 if (data->idx != idx)
3770 continue;
3771 } else {
3772 if (!hwname ||
3773 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3774 continue;
3775 }
3776
3777 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3778 continue;
3779
3780 list_del(&data->list);
3781 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3782 hwsim_rht_params);
3783 hwsim_radios_generation++;
3784 spin_unlock_bh(&hwsim_radio_lock);
3785 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3786 info);
3787 kfree(hwname);
3788 return 0;
3789 }
3790 spin_unlock_bh(&hwsim_radio_lock);
3791
3792 kfree(hwname);
3793 return -ENODEV;
3794}
3795
3796static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3797{
3798 struct mac80211_hwsim_data *data;
3799 struct sk_buff *skb;
3800 int idx, res = -ENODEV;
3801
3802 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3803 return -EINVAL;
3804 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3805
3806 spin_lock_bh(&hwsim_radio_lock);
3807 list_for_each_entry(data, &hwsim_radios, list) {
3808 if (data->idx != idx)
3809 continue;
3810
3811 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3812 continue;
3813
3814 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3815 if (!skb) {
3816 res = -ENOMEM;
3817 goto out_err;
3818 }
3819
3820 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3821 info->snd_seq, NULL, 0);
3822 if (res < 0) {
3823 nlmsg_free(skb);
3824 goto out_err;
3825 }
3826
3827 res = genlmsg_reply(skb, info);
3828 break;
3829 }
3830
3831out_err:
3832 spin_unlock_bh(&hwsim_radio_lock);
3833
3834 return res;
3835}
3836
3837static int hwsim_dump_radio_nl(struct sk_buff *skb,
3838 struct netlink_callback *cb)
3839{
3840 int last_idx = cb->args[0] - 1;
3841 struct mac80211_hwsim_data *data = NULL;
3842 int res = 0;
3843 void *hdr;
3844
3845 spin_lock_bh(&hwsim_radio_lock);
3846 cb->seq = hwsim_radios_generation;
3847
3848 if (last_idx >= hwsim_radio_idx-1)
3849 goto done;
3850
3851 list_for_each_entry(data, &hwsim_radios, list) {
3852 if (data->idx <= last_idx)
3853 continue;
3854
3855 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3856 continue;
3857
3858 res = mac80211_hwsim_get_radio(skb, data,
3859 NETLINK_CB(cb->skb).portid,
3860 cb->nlh->nlmsg_seq, cb,
3861 NLM_F_MULTI);
3862 if (res < 0)
3863 break;
3864
3865 last_idx = data->idx;
3866 }
3867
3868 cb->args[0] = last_idx + 1;
3869
3870 /* list changed, but no new element sent, set interrupted flag */
3871 if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3872 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3873 cb->nlh->nlmsg_seq, &hwsim_genl_family,
3874 NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3875 if (hdr) {
3876 genl_dump_check_consistent(cb, hdr);
3877 genlmsg_end(skb, hdr);
3878 } else {
3879 res = -EMSGSIZE;
3880 }
3881 }
3882
3883done:
3884 spin_unlock_bh(&hwsim_radio_lock);
3885 return res ?: skb->len;
3886}
3887
3888/* Generic Netlink operations array */
3889static const struct genl_ops hwsim_ops[] = {
3890 {
3891 .cmd = HWSIM_CMD_REGISTER,
3892 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3893 .doit = hwsim_register_received_nl,
3894 .flags = GENL_UNS_ADMIN_PERM,
3895 },
3896 {
3897 .cmd = HWSIM_CMD_FRAME,
3898 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3899 .doit = hwsim_cloned_frame_received_nl,
3900 },
3901 {
3902 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3903 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3904 .doit = hwsim_tx_info_frame_received_nl,
3905 },
3906 {
3907 .cmd = HWSIM_CMD_NEW_RADIO,
3908 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3909 .doit = hwsim_new_radio_nl,
3910 .flags = GENL_UNS_ADMIN_PERM,
3911 },
3912 {
3913 .cmd = HWSIM_CMD_DEL_RADIO,
3914 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3915 .doit = hwsim_del_radio_nl,
3916 .flags = GENL_UNS_ADMIN_PERM,
3917 },
3918 {
3919 .cmd = HWSIM_CMD_GET_RADIO,
3920 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3921 .doit = hwsim_get_radio_nl,
3922 .dumpit = hwsim_dump_radio_nl,
3923 },
3924};
3925
3926static struct genl_family hwsim_genl_family __ro_after_init = {
3927 .name = "MAC80211_HWSIM",
3928 .version = 1,
3929 .maxattr = HWSIM_ATTR_MAX,
3930 .policy = hwsim_genl_policy,
3931 .netnsok = true,
3932 .module = THIS_MODULE,
3933 .ops = hwsim_ops,
3934 .n_ops = ARRAY_SIZE(hwsim_ops),
3935 .mcgrps = hwsim_mcgrps,
3936 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3937};
3938
3939static void remove_user_radios(u32 portid)
3940{
3941 struct mac80211_hwsim_data *entry, *tmp;
3942 LIST_HEAD(list);
3943
3944 spin_lock_bh(&hwsim_radio_lock);
3945 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3946 if (entry->destroy_on_close && entry->portid == portid) {
3947 list_move(&entry->list, &list);
3948 rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
3949 hwsim_rht_params);
3950 hwsim_radios_generation++;
3951 }
3952 }
3953 spin_unlock_bh(&hwsim_radio_lock);
3954
3955 list_for_each_entry_safe(entry, tmp, &list, list) {
3956 list_del(&entry->list);
3957 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
3958 NULL);
3959 }
3960}
3961
3962static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3963 unsigned long state,
3964 void *_notify)
3965{
3966 struct netlink_notify *notify = _notify;
3967
3968 if (state != NETLINK_URELEASE)
3969 return NOTIFY_DONE;
3970
3971 remove_user_radios(notify->portid);
3972
3973 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3974 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3975 " socket, switching to perfect channel medium\n");
3976 hwsim_register_wmediumd(notify->net, 0);
3977 }
3978 return NOTIFY_DONE;
3979
3980}
3981
3982static struct notifier_block hwsim_netlink_notifier = {
3983 .notifier_call = mac80211_hwsim_netlink_notify,
3984};
3985
3986static int __init hwsim_init_netlink(void)
3987{
3988 int rc;
3989
3990 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3991
3992 rc = genl_register_family(&hwsim_genl_family);
3993 if (rc)
3994 goto failure;
3995
3996 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3997 if (rc) {
3998 genl_unregister_family(&hwsim_genl_family);
3999 goto failure;
4000 }
4001
4002 return 0;
4003
4004failure:
4005 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4006 return -EINVAL;
4007}
4008
4009static __net_init int hwsim_init_net(struct net *net)
4010{
4011 return hwsim_net_set_netgroup(net);
4012}
4013
4014static void __net_exit hwsim_exit_net(struct net *net)
4015{
4016 struct mac80211_hwsim_data *data, *tmp;
4017 LIST_HEAD(list);
4018
4019 spin_lock_bh(&hwsim_radio_lock);
4020 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
4021 if (!net_eq(wiphy_net(data->hw->wiphy), net))
4022 continue;
4023
4024 /* Radios created in init_net are returned to init_net. */
4025 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
4026 continue;
4027
4028 list_move(&data->list, &list);
4029 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4030 hwsim_rht_params);
4031 hwsim_radios_generation++;
4032 }
4033 spin_unlock_bh(&hwsim_radio_lock);
4034
4035 list_for_each_entry_safe(data, tmp, &list, list) {
4036 list_del(&data->list);
4037 mac80211_hwsim_del_radio(data,
4038 wiphy_name(data->hw->wiphy),
4039 NULL);
4040 }
4041
4042 ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
4043}
4044
4045static struct pernet_operations hwsim_net_ops = {
4046 .init = hwsim_init_net,
4047 .exit = hwsim_exit_net,
4048 .id = &hwsim_net_id,
4049 .size = sizeof(struct hwsim_net),
4050};
4051
4052static void hwsim_exit_netlink(void)
4053{
4054 /* unregister the notifier */
4055 netlink_unregister_notifier(&hwsim_netlink_notifier);
4056 /* unregister the family */
4057 genl_unregister_family(&hwsim_genl_family);
4058}
4059
4060#if IS_REACHABLE(CONFIG_VIRTIO)
4061static void hwsim_virtio_tx_done(struct virtqueue *vq)
4062{
4063 unsigned int len;
4064 struct sk_buff *skb;
4065 unsigned long flags;
4066
4067 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4068 while ((skb = virtqueue_get_buf(vq, &len)))
4069 nlmsg_free(skb);
4070 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4071}
4072
4073static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
4074{
4075 struct nlmsghdr *nlh;
4076 struct genlmsghdr *gnlh;
4077 struct nlattr *tb[HWSIM_ATTR_MAX + 1];
4078 struct genl_info info = {};
4079 int err;
4080
4081 nlh = nlmsg_hdr(skb);
4082 gnlh = nlmsg_data(nlh);
4083 err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
4084 hwsim_genl_policy, NULL);
4085 if (err) {
4086 pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
4087 return err;
4088 }
4089
4090 info.attrs = tb;
4091
4092 switch (gnlh->cmd) {
4093 case HWSIM_CMD_FRAME:
4094 hwsim_cloned_frame_received_nl(skb, &info);
4095 break;
4096 case HWSIM_CMD_TX_INFO_FRAME:
4097 hwsim_tx_info_frame_received_nl(skb, &info);
4098 break;
4099 default:
4100 pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
4101 return -EPROTO;
4102 }
4103 return 0;
4104}
4105
4106static void hwsim_virtio_rx_work(struct work_struct *work)
4107{
4108 struct virtqueue *vq;
4109 unsigned int len;
4110 struct sk_buff *skb;
4111 struct scatterlist sg[1];
4112 int err;
4113 unsigned long flags;
4114
4115 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4116 if (!hwsim_virtio_enabled)
4117 goto out_unlock;
4118
4119 skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
4120 if (!skb)
4121 goto out_unlock;
4122 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4123
4124 skb->data = skb->head;
4125 skb_set_tail_pointer(skb, len);
4126 hwsim_virtio_handle_cmd(skb);
4127
4128 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4129 if (!hwsim_virtio_enabled) {
4130 nlmsg_free(skb);
4131 goto out_unlock;
4132 }
4133 vq = hwsim_vqs[HWSIM_VQ_RX];
4134 sg_init_one(sg, skb->head, skb_end_offset(skb));
4135 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
4136 if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
4137 nlmsg_free(skb);
4138 else
4139 virtqueue_kick(vq);
4140 schedule_work(&hwsim_virtio_rx);
4141
4142out_unlock:
4143 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4144}
4145
4146static void hwsim_virtio_rx_done(struct virtqueue *vq)
4147{
4148 schedule_work(&hwsim_virtio_rx);
4149}
4150
4151static int init_vqs(struct virtio_device *vdev)
4152{
4153 vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
4154 [HWSIM_VQ_TX] = hwsim_virtio_tx_done,
4155 [HWSIM_VQ_RX] = hwsim_virtio_rx_done,
4156 };
4157 const char *names[HWSIM_NUM_VQS] = {
4158 [HWSIM_VQ_TX] = "tx",
4159 [HWSIM_VQ_RX] = "rx",
4160 };
4161
4162 return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
4163 hwsim_vqs, callbacks, names, NULL);
4164}
4165
4166static int fill_vq(struct virtqueue *vq)
4167{
4168 int i, err;
4169 struct sk_buff *skb;
4170 struct scatterlist sg[1];
4171
4172 for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
4173 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4174 if (!skb)
4175 return -ENOMEM;
4176
4177 sg_init_one(sg, skb->head, skb_end_offset(skb));
4178 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4179 if (err) {
4180 nlmsg_free(skb);
4181 return err;
4182 }
4183 }
4184 virtqueue_kick(vq);
4185 return 0;
4186}
4187
4188static void remove_vqs(struct virtio_device *vdev)
4189{
4190 int i;
4191
4192 vdev->config->reset(vdev);
4193
4194 for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
4195 struct virtqueue *vq = hwsim_vqs[i];
4196 struct sk_buff *skb;
4197
4198 while ((skb = virtqueue_detach_unused_buf(vq)))
4199 nlmsg_free(skb);
4200 }
4201
4202 vdev->config->del_vqs(vdev);
4203}
4204
4205static int hwsim_virtio_probe(struct virtio_device *vdev)
4206{
4207 int err;
4208 unsigned long flags;
4209
4210 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4211 if (hwsim_virtio_enabled) {
4212 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4213 return -EEXIST;
4214 }
4215 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4216
4217 err = init_vqs(vdev);
4218 if (err)
4219 return err;
4220
4221 err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
4222 if (err)
4223 goto out_remove;
4224
4225 spin_lock_irqsave(&hwsim_virtio_lock, flags);
4226 hwsim_virtio_enabled = true;
4227 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4228
4229 schedule_work(&hwsim_virtio_rx);
4230 return 0;
4231
4232out_remove:
4233 remove_vqs(vdev);
4234 return err;
4235}
4236
4237static void hwsim_virtio_remove(struct virtio_device *vdev)
4238{
4239 hwsim_virtio_enabled = false;
4240
4241 cancel_work_sync(&hwsim_virtio_rx);
4242
4243 remove_vqs(vdev);
4244}
4245
4246/* MAC80211_HWSIM virtio device id table */
4247static const struct virtio_device_id id_table[] = {
4248 { VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
4249 { 0 }
4250};
4251MODULE_DEVICE_TABLE(virtio, id_table);
4252
4253static struct virtio_driver virtio_hwsim = {
4254 .driver.name = KBUILD_MODNAME,
4255 .driver.owner = THIS_MODULE,
4256 .id_table = id_table,
4257 .probe = hwsim_virtio_probe,
4258 .remove = hwsim_virtio_remove,
4259};
4260
4261static int hwsim_register_virtio_driver(void)
4262{
4263 spin_lock_init(&hwsim_virtio_lock);
4264
4265 return register_virtio_driver(&virtio_hwsim);
4266}
4267
4268static void hwsim_unregister_virtio_driver(void)
4269{
4270 unregister_virtio_driver(&virtio_hwsim);
4271}
4272#else
4273static inline int hwsim_register_virtio_driver(void)
4274{
4275 return 0;
4276}
4277
4278static inline void hwsim_unregister_virtio_driver(void)
4279{
4280}
4281#endif
4282
4283static int __init init_mac80211_hwsim(void)
4284{
4285 int i, err;
4286
4287 if (radios < 0 || radios > 100)
4288 return -EINVAL;
4289
4290 if (channels < 1)
4291 return -EINVAL;
4292
4293 spin_lock_init(&hwsim_radio_lock);
4294
4295 err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
4296 if (err)
4297 return err;
4298
4299 err = register_pernet_device(&hwsim_net_ops);
4300 if (err)
4301 goto out_free_rht;
4302
4303 err = platform_driver_register(&mac80211_hwsim_driver);
4304 if (err)
4305 goto out_unregister_pernet;
4306
4307 err = hwsim_init_netlink();
4308 if (err)
4309 goto out_unregister_driver;
4310
4311 err = hwsim_register_virtio_driver();
4312 if (err)
4313 goto out_exit_netlink;
4314
4315 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
4316 if (IS_ERR(hwsim_class)) {
4317 err = PTR_ERR(hwsim_class);
4318 goto out_exit_virtio;
4319 }
4320
4321 for (i = 0; i < radios; i++) {
4322 struct hwsim_new_radio_params param = { 0 };
4323
4324 param.channels = channels;
4325
4326 switch (regtest) {
4327 case HWSIM_REGTEST_DIFF_COUNTRY:
4328 if (i < ARRAY_SIZE(hwsim_alpha2s))
4329 param.reg_alpha2 = hwsim_alpha2s[i];
4330 break;
4331 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
4332 if (!i)
4333 param.reg_alpha2 = hwsim_alpha2s[0];
4334 break;
4335 case HWSIM_REGTEST_STRICT_ALL:
4336 param.reg_strict = true;
4337 fallthrough;
4338 case HWSIM_REGTEST_DRIVER_REG_ALL:
4339 param.reg_alpha2 = hwsim_alpha2s[0];
4340 break;
4341 case HWSIM_REGTEST_WORLD_ROAM:
4342 if (i == 0)
4343 param.regd = &hwsim_world_regdom_custom_01;
4344 break;
4345 case HWSIM_REGTEST_CUSTOM_WORLD:
4346 param.regd = &hwsim_world_regdom_custom_01;
4347 break;
4348 case HWSIM_REGTEST_CUSTOM_WORLD_2:
4349 if (i == 0)
4350 param.regd = &hwsim_world_regdom_custom_01;
4351 else if (i == 1)
4352 param.regd = &hwsim_world_regdom_custom_02;
4353 break;
4354 case HWSIM_REGTEST_STRICT_FOLLOW:
4355 if (i == 0) {
4356 param.reg_strict = true;
4357 param.reg_alpha2 = hwsim_alpha2s[0];
4358 }
4359 break;
4360 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
4361 if (i == 0) {
4362 param.reg_strict = true;
4363 param.reg_alpha2 = hwsim_alpha2s[0];
4364 } else if (i == 1) {
4365 param.reg_alpha2 = hwsim_alpha2s[1];
4366 }
4367 break;
4368 case HWSIM_REGTEST_ALL:
4369 switch (i) {
4370 case 0:
4371 param.regd = &hwsim_world_regdom_custom_01;
4372 break;
4373 case 1:
4374 param.regd = &hwsim_world_regdom_custom_02;
4375 break;
4376 case 2:
4377 param.reg_alpha2 = hwsim_alpha2s[0];
4378 break;
4379 case 3:
4380 param.reg_alpha2 = hwsim_alpha2s[1];
4381 break;
4382 case 4:
4383 param.reg_strict = true;
4384 param.reg_alpha2 = hwsim_alpha2s[2];
4385 break;
4386 }
4387 break;
4388 default:
4389 break;
4390 }
4391
4392 param.p2p_device = support_p2p_device;
4393 param.use_chanctx = channels > 1;
4394 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4395 if (param.p2p_device)
4396 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4397
4398 err = mac80211_hwsim_new_radio(NULL, ¶m);
4399 if (err < 0)
4400 goto out_free_radios;
4401 }
4402
4403 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4404 hwsim_mon_setup);
4405 if (hwsim_mon == NULL) {
4406 err = -ENOMEM;
4407 goto out_free_radios;
4408 }
4409
4410 rtnl_lock();
4411 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4412 if (err < 0) {
4413 rtnl_unlock();
4414 goto out_free_mon;
4415 }
4416
4417 err = register_netdevice(hwsim_mon);
4418 if (err < 0) {
4419 rtnl_unlock();
4420 goto out_free_mon;
4421 }
4422 rtnl_unlock();
4423
4424 return 0;
4425
4426out_free_mon:
4427 free_netdev(hwsim_mon);
4428out_free_radios:
4429 mac80211_hwsim_free();
4430out_exit_virtio:
4431 hwsim_unregister_virtio_driver();
4432out_exit_netlink:
4433 hwsim_exit_netlink();
4434out_unregister_driver:
4435 platform_driver_unregister(&mac80211_hwsim_driver);
4436out_unregister_pernet:
4437 unregister_pernet_device(&hwsim_net_ops);
4438out_free_rht:
4439 rhashtable_destroy(&hwsim_radios_rht);
4440 return err;
4441}
4442module_init(init_mac80211_hwsim);
4443
4444static void __exit exit_mac80211_hwsim(void)
4445{
4446 pr_debug("mac80211_hwsim: unregister radios\n");
4447
4448 hwsim_unregister_virtio_driver();
4449 hwsim_exit_netlink();
4450
4451 mac80211_hwsim_free();
4452
4453 rhashtable_destroy(&hwsim_radios_rht);
4454 unregister_netdev(hwsim_mon);
4455 platform_driver_unregister(&mac80211_hwsim_driver);
4456 unregister_pernet_device(&hwsim_net_ops);
4457}
4458module_exit(exit_mac80211_hwsim);