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>
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.
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)
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/platform_device.h>
29 #include <linux/debugfs.h>
30 #include <linux/module.h>
31 #include <linux/ktime.h>
32 #include <net/genetlink.h>
33 #include "mac80211_hwsim.h"
35 #define WARN_QUEUE 100
38 MODULE_AUTHOR("Jouni Malinen");
39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
40 MODULE_LICENSE("GPL");
42 static u32 wmediumd_portid;
44 static int radios = 2;
45 module_param(radios, int, 0444);
46 MODULE_PARM_DESC(radios, "Number of simulated radios");
48 static int channels = 1;
49 module_param(channels, int, 0444);
50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
52 static bool paged_rx = false;
53 module_param(paged_rx, bool, 0644);
54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
56 static bool rctbl = false;
57 module_param(rctbl, bool, 0444);
58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
61 * enum hwsim_regtest - the type of regulatory tests we offer
63 * These are the different values you can use for the regtest
64 * module parameter. This is useful to help test world roaming
65 * and the driver regulatory_hint() call and combinations of these.
66 * If you want to do specific alpha2 regulatory domain tests simply
67 * use the userspace regulatory request as that will be respected as
68 * well without the need of this module parameter. This is designed
69 * only for testing the driver regulatory request, world roaming
70 * and all possible combinations.
72 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
73 * this is the default value.
74 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
75 * hint, only one driver regulatory hint will be sent as such the
76 * secondary radios are expected to follow.
77 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
78 * request with all radios reporting the same regulatory domain.
79 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
80 * different regulatory domains requests. Expected behaviour is for
81 * an intersection to occur but each device will still use their
82 * respective regulatory requested domains. Subsequent radios will
83 * use the resulting intersection.
84 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
85 * this by using a custom beacon-capable regulatory domain for the first
86 * radio. All other device world roam.
87 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
88 * domain requests. All radios will adhere to this custom world regulatory
90 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
91 * domain requests. The first radio will adhere to the first custom world
92 * regulatory domain, the second one to the second custom world regulatory
93 * domain. All other devices will world roam.
94 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
95 * settings, only the first radio will send a regulatory domain request
96 * and use strict settings. The rest of the radios are expected to follow.
97 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
98 * settings. All radios will adhere to this.
99 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
100 * domain settings, combined with secondary driver regulatory domain
101 * settings. The first radio will get a strict regulatory domain setting
102 * using the first driver regulatory request and the second radio will use
103 * non-strict settings using the second driver regulatory request. All
104 * other devices should follow the intersection created between the
106 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
107 * at least 6 radios for a complete test. We will test in this order:
108 * 1 - driver custom world regulatory domain
109 * 2 - second custom world regulatory domain
110 * 3 - first driver regulatory domain request
111 * 4 - second driver regulatory domain request
112 * 5 - strict regulatory domain settings using the third driver regulatory
114 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
115 * regulatory requests.
118 HWSIM_REGTEST_DISABLED = 0,
119 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
120 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
121 HWSIM_REGTEST_DIFF_COUNTRY = 3,
122 HWSIM_REGTEST_WORLD_ROAM = 4,
123 HWSIM_REGTEST_CUSTOM_WORLD = 5,
124 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
125 HWSIM_REGTEST_STRICT_FOLLOW = 7,
126 HWSIM_REGTEST_STRICT_ALL = 8,
127 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
128 HWSIM_REGTEST_ALL = 10,
131 /* Set to one of the HWSIM_REGTEST_* values above */
132 static int regtest = HWSIM_REGTEST_DISABLED;
133 module_param(regtest, int, 0444);
134 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
136 static const char *hwsim_alpha2s[] = {
145 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
149 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
150 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
151 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
152 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
156 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
160 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
161 REG_RULE(5725-10, 5850+10, 40, 0, 30,
166 struct hwsim_vif_priv {
174 #define HWSIM_VIF_MAGIC 0x69537748
176 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
178 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
179 WARN(vp->magic != HWSIM_VIF_MAGIC,
180 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
181 vif, vp->magic, vif->addr, vif->type, vif->p2p);
184 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
186 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
187 vp->magic = HWSIM_VIF_MAGIC;
190 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
192 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
196 struct hwsim_sta_priv {
200 #define HWSIM_STA_MAGIC 0x6d537749
202 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
204 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
205 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
208 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
210 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
211 sp->magic = HWSIM_STA_MAGIC;
214 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
216 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
220 struct hwsim_chanctx_priv {
224 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
226 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
228 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
229 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
232 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
234 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
235 cp->magic = HWSIM_CHANCTX_MAGIC;
238 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
240 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
244 static struct class *hwsim_class;
246 static struct net_device *hwsim_mon; /* global monitor netdev */
248 #define CHAN2G(_freq) { \
249 .band = IEEE80211_BAND_2GHZ, \
250 .center_freq = (_freq), \
251 .hw_value = (_freq), \
255 #define CHAN5G(_freq) { \
256 .band = IEEE80211_BAND_5GHZ, \
257 .center_freq = (_freq), \
258 .hw_value = (_freq), \
262 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
263 CHAN2G(2412), /* Channel 1 */
264 CHAN2G(2417), /* Channel 2 */
265 CHAN2G(2422), /* Channel 3 */
266 CHAN2G(2427), /* Channel 4 */
267 CHAN2G(2432), /* Channel 5 */
268 CHAN2G(2437), /* Channel 6 */
269 CHAN2G(2442), /* Channel 7 */
270 CHAN2G(2447), /* Channel 8 */
271 CHAN2G(2452), /* Channel 9 */
272 CHAN2G(2457), /* Channel 10 */
273 CHAN2G(2462), /* Channel 11 */
274 CHAN2G(2467), /* Channel 12 */
275 CHAN2G(2472), /* Channel 13 */
276 CHAN2G(2484), /* Channel 14 */
279 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
280 CHAN5G(5180), /* Channel 36 */
281 CHAN5G(5200), /* Channel 40 */
282 CHAN5G(5220), /* Channel 44 */
283 CHAN5G(5240), /* Channel 48 */
285 CHAN5G(5260), /* Channel 52 */
286 CHAN5G(5280), /* Channel 56 */
287 CHAN5G(5300), /* Channel 60 */
288 CHAN5G(5320), /* Channel 64 */
290 CHAN5G(5500), /* Channel 100 */
291 CHAN5G(5520), /* Channel 104 */
292 CHAN5G(5540), /* Channel 108 */
293 CHAN5G(5560), /* Channel 112 */
294 CHAN5G(5580), /* Channel 116 */
295 CHAN5G(5600), /* Channel 120 */
296 CHAN5G(5620), /* Channel 124 */
297 CHAN5G(5640), /* Channel 128 */
298 CHAN5G(5660), /* Channel 132 */
299 CHAN5G(5680), /* Channel 136 */
300 CHAN5G(5700), /* Channel 140 */
302 CHAN5G(5745), /* Channel 149 */
303 CHAN5G(5765), /* Channel 153 */
304 CHAN5G(5785), /* Channel 157 */
305 CHAN5G(5805), /* Channel 161 */
306 CHAN5G(5825), /* Channel 165 */
309 static const struct ieee80211_rate hwsim_rates[] = {
311 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
312 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
313 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
324 static spinlock_t hwsim_radio_lock;
325 static struct list_head hwsim_radios;
327 struct mac80211_hwsim_data {
328 struct list_head list;
329 struct ieee80211_hw *hw;
331 struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
332 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
333 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
334 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
336 struct mac_address addresses[2];
338 struct ieee80211_channel *tmp_chan;
339 struct delayed_work roc_done;
340 struct delayed_work hw_scan;
341 struct cfg80211_scan_request *hw_scan_request;
342 struct ieee80211_vif *hw_scan_vif;
345 struct ieee80211_channel *channel;
346 u64 beacon_int /* beacon interval in us */;
347 unsigned int rx_filter;
348 bool started, idle, scanning;
350 struct tasklet_hrtimer beacon_timer;
352 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
354 bool ps_poll_pending;
355 struct dentry *debugfs;
357 struct sk_buff_head pending; /* packets pending */
359 * Only radios in the same group can communicate together (the
360 * channel has to match too). Each bit represents a group. A
361 * radio can be in more then one group.
367 /* difference between this hw's clock and the real clock, in usecs */
370 /* absolute beacon transmission time. Used to cover up "tx" delay. */
375 struct hwsim_radiotap_hdr {
376 struct ieee80211_radiotap_header hdr;
384 /* MAC80211_HWSIM netlinf family */
385 static struct genl_family hwsim_genl_family = {
386 .id = GENL_ID_GENERATE,
388 .name = "MAC80211_HWSIM",
390 .maxattr = HWSIM_ATTR_MAX,
393 /* MAC80211_HWSIM netlink policy */
395 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
396 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
397 .len = 6*sizeof(u8) },
398 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
399 .len = 6*sizeof(u8) },
400 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
401 .len = IEEE80211_MAX_DATA_LEN },
402 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
403 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
404 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
405 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
406 .len = IEEE80211_TX_MAX_RATES*sizeof(
407 struct hwsim_tx_rate)},
408 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
411 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
412 struct net_device *dev)
414 /* TODO: allow packet injection */
419 static inline u64 mac80211_hwsim_get_tsf_raw(void)
421 return ktime_to_us(ktime_get_real());
424 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
426 u64 now = mac80211_hwsim_get_tsf_raw();
427 return cpu_to_le64(now + data->tsf_offset);
430 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
431 struct ieee80211_vif *vif)
433 struct mac80211_hwsim_data *data = hw->priv;
434 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
437 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
438 struct ieee80211_vif *vif, u64 tsf)
440 struct mac80211_hwsim_data *data = hw->priv;
441 u64 now = mac80211_hwsim_get_tsf(hw, vif);
442 u32 bcn_int = data->beacon_int;
443 s64 delta = tsf - now;
445 data->tsf_offset += delta;
446 /* adjust after beaconing with new timestamp at old TBTT */
447 data->bcn_delta = do_div(delta, bcn_int);
450 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
451 struct sk_buff *tx_skb,
452 struct ieee80211_channel *chan)
454 struct mac80211_hwsim_data *data = hw->priv;
456 struct hwsim_radiotap_hdr *hdr;
458 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
459 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
461 if (!netif_running(hwsim_mon))
464 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
468 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
469 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
471 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
472 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
473 (1 << IEEE80211_RADIOTAP_RATE) |
474 (1 << IEEE80211_RADIOTAP_TSFT) |
475 (1 << IEEE80211_RADIOTAP_CHANNEL));
476 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
478 hdr->rt_rate = txrate->bitrate / 5;
479 hdr->rt_channel = cpu_to_le16(chan->center_freq);
480 flags = IEEE80211_CHAN_2GHZ;
481 if (txrate->flags & IEEE80211_RATE_ERP_G)
482 flags |= IEEE80211_CHAN_OFDM;
484 flags |= IEEE80211_CHAN_CCK;
485 hdr->rt_chbitmask = cpu_to_le16(flags);
487 skb->dev = hwsim_mon;
488 skb_set_mac_header(skb, 0);
489 skb->ip_summed = CHECKSUM_UNNECESSARY;
490 skb->pkt_type = PACKET_OTHERHOST;
491 skb->protocol = htons(ETH_P_802_2);
492 memset(skb->cb, 0, sizeof(skb->cb));
497 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
501 struct hwsim_radiotap_hdr *hdr;
503 struct ieee80211_hdr *hdr11;
505 if (!netif_running(hwsim_mon))
508 skb = dev_alloc_skb(100);
512 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
513 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
515 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
516 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
517 (1 << IEEE80211_RADIOTAP_CHANNEL));
520 hdr->rt_channel = cpu_to_le16(chan->center_freq);
521 flags = IEEE80211_CHAN_2GHZ;
522 hdr->rt_chbitmask = cpu_to_le16(flags);
524 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
525 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
526 IEEE80211_STYPE_ACK);
527 hdr11->duration_id = cpu_to_le16(0);
528 memcpy(hdr11->addr1, addr, ETH_ALEN);
530 skb->dev = hwsim_mon;
531 skb_set_mac_header(skb, 0);
532 skb->ip_summed = CHECKSUM_UNNECESSARY;
533 skb->pkt_type = PACKET_OTHERHOST;
534 skb->protocol = htons(ETH_P_802_2);
535 memset(skb->cb, 0, sizeof(skb->cb));
540 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
549 /* TODO: accept (some) Beacons by default and other frames only
550 * if pending PS-Poll has been sent */
553 /* Allow unicast frames to own address if there is a pending
555 if (data->ps_poll_pending &&
556 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
558 data->ps_poll_pending = false;
568 struct mac80211_hwsim_addr_match_data {
573 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
574 struct ieee80211_vif *vif)
576 struct mac80211_hwsim_addr_match_data *md = data;
577 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
582 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
585 struct mac80211_hwsim_addr_match_data md;
587 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
592 ieee80211_iterate_active_interfaces_atomic(data->hw,
593 IEEE80211_IFACE_ITER_NORMAL,
594 mac80211_hwsim_addr_iter,
600 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
601 struct sk_buff *my_skb,
605 struct mac80211_hwsim_data *data = hw->priv;
606 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
607 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
609 unsigned int hwsim_flags = 0;
611 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
613 if (data->ps != PS_DISABLED)
614 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
615 /* If the queue contains MAX_QUEUE skb's drop some */
616 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
617 /* Droping until WARN_QUEUE level */
618 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
619 skb_dequeue(&data->pending);
622 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
624 goto nla_put_failure;
626 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
628 if (msg_head == NULL) {
629 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
630 goto nla_put_failure;
633 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
634 sizeof(struct mac_address), data->addresses[1].addr))
635 goto nla_put_failure;
637 /* We get the skb->data */
638 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
639 goto nla_put_failure;
641 /* We get the flags for this transmission, and we translate them to
644 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
645 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
647 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
648 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
650 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
651 goto nla_put_failure;
653 /* We get the tx control (rate and retries) info*/
655 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
656 tx_attempts[i].idx = info->status.rates[i].idx;
657 tx_attempts[i].count = info->status.rates[i].count;
660 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
661 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
663 goto nla_put_failure;
665 /* We create a cookie to identify this skb */
666 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
667 goto nla_put_failure;
669 genlmsg_end(skb, msg_head);
670 genlmsg_unicast(&init_net, skb, dst_portid);
672 /* Enqueue the packet */
673 skb_queue_tail(&data->pending, my_skb);
677 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
680 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
681 struct ieee80211_channel *c2)
686 return c1->center_freq == c2->center_freq;
689 struct tx_iter_data {
690 struct ieee80211_channel *channel;
694 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
695 struct ieee80211_vif *vif)
697 struct tx_iter_data *data = _data;
699 if (!vif->chanctx_conf)
702 if (!hwsim_chans_compat(data->channel,
703 rcu_dereference(vif->chanctx_conf)->def.chan))
706 data->receive = true;
709 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
711 struct ieee80211_channel *chan)
713 struct mac80211_hwsim_data *data = hw->priv, *data2;
715 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
716 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
717 struct ieee80211_rx_status rx_status;
720 memset(&rx_status, 0, sizeof(rx_status));
721 rx_status.flag |= RX_FLAG_MACTIME_START;
722 rx_status.freq = chan->center_freq;
723 rx_status.band = chan->band;
724 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
726 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
728 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
729 rx_status.flag |= RX_FLAG_VHT;
731 rx_status.rate_idx = info->control.rates[0].idx;
732 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
733 rx_status.flag |= RX_FLAG_HT;
735 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
736 rx_status.flag |= RX_FLAG_40MHZ;
737 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
738 rx_status.flag |= RX_FLAG_SHORT_GI;
739 /* TODO: simulate real signal strength (and optional packet loss) */
740 rx_status.signal = data->power_level - 50;
742 if (data->ps != PS_DISABLED)
743 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
745 /* release the skb's source info */
753 * Get absolute mactime here so all HWs RX at the "same time", and
754 * absolute TX time for beacon mactime so the timestamp matches.
755 * Giving beacons a different mactime than non-beacons looks messy, but
756 * it helps the Toffset be exact and a ~10us mactime discrepancy
757 * probably doesn't really matter.
759 if (ieee80211_is_beacon(hdr->frame_control) ||
760 ieee80211_is_probe_resp(hdr->frame_control))
761 now = data->abs_bcn_ts;
763 now = mac80211_hwsim_get_tsf_raw();
765 /* Copy skb to all enabled radios that are on the current frequency */
766 spin_lock(&hwsim_radio_lock);
767 list_for_each_entry(data2, &hwsim_radios, list) {
768 struct sk_buff *nskb;
769 struct tx_iter_data tx_iter_data = {
777 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
778 !hwsim_ps_rx_ok(data2, skb))
781 if (!(data->group & data2->group))
784 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
785 !hwsim_chans_compat(chan, data2->channel)) {
786 ieee80211_iterate_active_interfaces_atomic(
787 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
788 mac80211_hwsim_tx_iter, &tx_iter_data);
789 if (!tx_iter_data.receive)
794 * reserve some space for our vendor and the normal
795 * radiotap header, since we're copying anyway
797 if (skb->len < PAGE_SIZE && paged_rx) {
798 struct page *page = alloc_page(GFP_ATOMIC);
803 nskb = dev_alloc_skb(128);
809 memcpy(page_address(page), skb->data, skb->len);
810 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
812 nskb = skb_copy(skb, GFP_ATOMIC);
817 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
820 rx_status.mactime = now + data2->tsf_offset;
823 * Don't enable this code by default as the OUI 00:00:00
824 * is registered to Xerox so we shouldn't use it here, it
825 * might find its way into pcap files.
826 * Note that this code requires the headroom in the SKB
827 * that was allocated earlier.
829 rx_status.vendor_radiotap_oui[0] = 0x00;
830 rx_status.vendor_radiotap_oui[1] = 0x00;
831 rx_status.vendor_radiotap_oui[2] = 0x00;
832 rx_status.vendor_radiotap_subns = 127;
834 * Radiotap vendor namespaces can (and should) also be
835 * split into fields by using the standard radiotap
836 * presence bitmap mechanism. Use just BIT(0) here for
837 * the presence bitmap.
839 rx_status.vendor_radiotap_bitmap = BIT(0);
840 /* We have 8 bytes of (dummy) data */
841 rx_status.vendor_radiotap_len = 8;
842 /* For testing, also require it to be aligned */
843 rx_status.vendor_radiotap_align = 8;
845 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
848 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
849 ieee80211_rx_irqsafe(data2->hw, nskb);
851 spin_unlock(&hwsim_radio_lock);
856 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
857 struct ieee80211_tx_control *control,
860 struct mac80211_hwsim_data *data = hw->priv;
861 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
862 struct ieee80211_chanctx_conf *chanctx_conf;
863 struct ieee80211_channel *channel;
867 if (WARN_ON(skb->len < 10)) {
868 /* Should not happen; just a sanity check for addr1 use */
869 ieee80211_free_txskb(hw, skb);
874 channel = data->channel;
875 } else if (txi->hw_queue == 4) {
876 channel = data->tmp_chan;
878 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
880 channel = chanctx_conf->def.chan;
885 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
886 ieee80211_free_txskb(hw, skb);
890 if (data->idle && !data->tmp_chan) {
891 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
892 ieee80211_free_txskb(hw, skb);
896 if (txi->control.vif)
897 hwsim_check_magic(txi->control.vif);
899 hwsim_check_sta_magic(control->sta);
902 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
904 ARRAY_SIZE(txi->control.rates));
906 txi->rate_driver_data[0] = channel;
907 mac80211_hwsim_monitor_rx(hw, skb, channel);
909 /* wmediumd mode check */
910 _portid = ACCESS_ONCE(wmediumd_portid);
913 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
915 /* NO wmediumd detected, perfect medium simulation */
916 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
918 if (ack && skb->len >= 16) {
919 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
920 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
923 ieee80211_tx_info_clear_status(txi);
925 /* frame was transmitted at most favorable rate at first attempt */
926 txi->control.rates[0].count = 1;
927 txi->control.rates[1].idx = -1;
929 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
930 txi->flags |= IEEE80211_TX_STAT_ACK;
931 ieee80211_tx_status_irqsafe(hw, skb);
935 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
937 struct mac80211_hwsim_data *data = hw->priv;
938 wiphy_debug(hw->wiphy, "%s\n", __func__);
939 data->started = true;
944 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
946 struct mac80211_hwsim_data *data = hw->priv;
947 data->started = false;
948 tasklet_hrtimer_cancel(&data->beacon_timer);
949 wiphy_debug(hw->wiphy, "%s\n", __func__);
953 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
954 struct ieee80211_vif *vif)
956 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
957 __func__, ieee80211_vif_type_p2p(vif),
959 hwsim_set_magic(vif);
962 vif->hw_queue[IEEE80211_AC_VO] = 0;
963 vif->hw_queue[IEEE80211_AC_VI] = 1;
964 vif->hw_queue[IEEE80211_AC_BE] = 2;
965 vif->hw_queue[IEEE80211_AC_BK] = 3;
971 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
972 struct ieee80211_vif *vif,
973 enum nl80211_iftype newtype,
976 newtype = ieee80211_iftype_p2p(newtype, newp2p);
977 wiphy_debug(hw->wiphy,
978 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
979 __func__, ieee80211_vif_type_p2p(vif),
981 hwsim_check_magic(vif);
984 * interface may change from non-AP to AP in
985 * which case this needs to be set up again
992 static void mac80211_hwsim_remove_interface(
993 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
995 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
996 __func__, ieee80211_vif_type_p2p(vif),
998 hwsim_check_magic(vif);
999 hwsim_clear_magic(vif);
1002 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1003 struct sk_buff *skb,
1004 struct ieee80211_channel *chan)
1006 u32 _pid = ACCESS_ONCE(wmediumd_portid);
1009 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1010 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1012 ARRAY_SIZE(txi->control.rates));
1015 mac80211_hwsim_monitor_rx(hw, skb, chan);
1018 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1020 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1024 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1025 struct ieee80211_vif *vif)
1027 struct mac80211_hwsim_data *data = arg;
1028 struct ieee80211_hw *hw = data->hw;
1029 struct ieee80211_tx_info *info;
1030 struct ieee80211_rate *txrate;
1031 struct ieee80211_mgmt *mgmt;
1032 struct sk_buff *skb;
1034 hwsim_check_magic(vif);
1036 if (vif->type != NL80211_IFTYPE_AP &&
1037 vif->type != NL80211_IFTYPE_MESH_POINT &&
1038 vif->type != NL80211_IFTYPE_ADHOC)
1041 skb = ieee80211_beacon_get(hw, vif);
1044 info = IEEE80211_SKB_CB(skb);
1046 ieee80211_get_tx_rates(vif, NULL, skb,
1047 info->control.rates,
1048 ARRAY_SIZE(info->control.rates));
1050 txrate = ieee80211_get_tx_rate(hw, info);
1052 mgmt = (struct ieee80211_mgmt *) skb->data;
1053 /* fake header transmission time */
1054 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1055 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1057 24 * 8 * 10 / txrate->bitrate);
1059 mac80211_hwsim_tx_frame(hw, skb,
1060 rcu_dereference(vif->chanctx_conf)->def.chan);
1063 static enum hrtimer_restart
1064 mac80211_hwsim_beacon(struct hrtimer *timer)
1066 struct mac80211_hwsim_data *data =
1067 container_of(timer, struct mac80211_hwsim_data,
1068 beacon_timer.timer);
1069 struct ieee80211_hw *hw = data->hw;
1070 u64 bcn_int = data->beacon_int;
1076 ieee80211_iterate_active_interfaces_atomic(
1077 hw, IEEE80211_IFACE_ITER_NORMAL,
1078 mac80211_hwsim_beacon_tx, data);
1080 /* beacon at new TBTT + beacon interval */
1081 if (data->bcn_delta) {
1082 bcn_int -= data->bcn_delta;
1083 data->bcn_delta = 0;
1086 next_bcn = ktime_add(hrtimer_get_expires(timer),
1087 ns_to_ktime(bcn_int * 1000));
1088 tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1090 return HRTIMER_NORESTART;
1093 static const char * const hwsim_chanwidths[] = {
1094 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1095 [NL80211_CHAN_WIDTH_20] = "ht20",
1096 [NL80211_CHAN_WIDTH_40] = "ht40",
1097 [NL80211_CHAN_WIDTH_80] = "vht80",
1098 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1099 [NL80211_CHAN_WIDTH_160] = "vht160",
1102 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1104 struct mac80211_hwsim_data *data = hw->priv;
1105 struct ieee80211_conf *conf = &hw->conf;
1106 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1107 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1108 [IEEE80211_SMPS_OFF] = "off",
1109 [IEEE80211_SMPS_STATIC] = "static",
1110 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1113 if (conf->chandef.chan)
1114 wiphy_debug(hw->wiphy,
1115 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1117 conf->chandef.chan->center_freq,
1118 conf->chandef.center_freq1,
1119 conf->chandef.center_freq2,
1120 hwsim_chanwidths[conf->chandef.width],
1121 !!(conf->flags & IEEE80211_CONF_IDLE),
1122 !!(conf->flags & IEEE80211_CONF_PS),
1123 smps_modes[conf->smps_mode]);
1125 wiphy_debug(hw->wiphy,
1126 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1128 !!(conf->flags & IEEE80211_CONF_IDLE),
1129 !!(conf->flags & IEEE80211_CONF_PS),
1130 smps_modes[conf->smps_mode]);
1132 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1134 data->channel = conf->chandef.chan;
1136 WARN_ON(data->channel && channels > 1);
1138 data->power_level = conf->power_level;
1139 if (!data->started || !data->beacon_int)
1140 tasklet_hrtimer_cancel(&data->beacon_timer);
1141 else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1142 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1143 u32 bcn_int = data->beacon_int;
1144 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1146 tasklet_hrtimer_start(&data->beacon_timer,
1147 ns_to_ktime(until_tbtt * 1000),
1155 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1156 unsigned int changed_flags,
1157 unsigned int *total_flags,u64 multicast)
1159 struct mac80211_hwsim_data *data = hw->priv;
1161 wiphy_debug(hw->wiphy, "%s\n", __func__);
1163 data->rx_filter = 0;
1164 if (*total_flags & FIF_PROMISC_IN_BSS)
1165 data->rx_filter |= FIF_PROMISC_IN_BSS;
1166 if (*total_flags & FIF_ALLMULTI)
1167 data->rx_filter |= FIF_ALLMULTI;
1169 *total_flags = data->rx_filter;
1172 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1173 struct ieee80211_vif *vif)
1175 unsigned int *count = data;
1176 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1182 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1183 struct ieee80211_vif *vif,
1184 struct ieee80211_bss_conf *info,
1187 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1188 struct mac80211_hwsim_data *data = hw->priv;
1190 hwsim_check_magic(vif);
1192 wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1193 __func__, changed, vif->addr);
1195 if (changed & BSS_CHANGED_BSSID) {
1196 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1197 __func__, info->bssid);
1198 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1201 if (changed & BSS_CHANGED_ASSOC) {
1202 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1203 info->assoc, info->aid);
1204 vp->assoc = info->assoc;
1205 vp->aid = info->aid;
1208 if (changed & BSS_CHANGED_BEACON_INT) {
1209 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
1210 data->beacon_int = info->beacon_int * 1024;
1213 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1214 wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
1215 vp->bcn_en = info->enable_beacon;
1216 if (data->started &&
1217 !hrtimer_is_queued(&data->beacon_timer.timer) &&
1218 info->enable_beacon) {
1219 u64 tsf, until_tbtt;
1221 if (WARN_ON(!data->beacon_int))
1222 data->beacon_int = 1000 * 1024;
1223 tsf = mac80211_hwsim_get_tsf(hw, vif);
1224 bcn_int = data->beacon_int;
1225 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1226 tasklet_hrtimer_start(&data->beacon_timer,
1227 ns_to_ktime(until_tbtt * 1000),
1229 } else if (!info->enable_beacon) {
1230 unsigned int count = 0;
1231 ieee80211_iterate_active_interfaces(
1232 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1233 mac80211_hwsim_bcn_en_iter, &count);
1234 wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
1237 tasklet_hrtimer_cancel(&data->beacon_timer);
1241 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1242 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
1243 info->use_cts_prot);
1246 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1247 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
1248 info->use_short_preamble);
1251 if (changed & BSS_CHANGED_ERP_SLOT) {
1252 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1255 if (changed & BSS_CHANGED_HT) {
1256 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
1257 info->ht_operation_mode);
1260 if (changed & BSS_CHANGED_BASIC_RATES) {
1261 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1262 (unsigned long long) info->basic_rates);
1265 if (changed & BSS_CHANGED_TXPOWER)
1266 wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1269 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1270 struct ieee80211_vif *vif,
1271 struct ieee80211_sta *sta)
1273 hwsim_check_magic(vif);
1274 hwsim_set_sta_magic(sta);
1279 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1280 struct ieee80211_vif *vif,
1281 struct ieee80211_sta *sta)
1283 hwsim_check_magic(vif);
1284 hwsim_clear_sta_magic(sta);
1289 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1290 struct ieee80211_vif *vif,
1291 enum sta_notify_cmd cmd,
1292 struct ieee80211_sta *sta)
1294 hwsim_check_magic(vif);
1297 case STA_NOTIFY_SLEEP:
1298 case STA_NOTIFY_AWAKE:
1299 /* TODO: make good use of these flags */
1302 WARN(1, "Invalid sta notify: %d\n", cmd);
1307 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1308 struct ieee80211_sta *sta,
1311 hwsim_check_sta_magic(sta);
1315 static int mac80211_hwsim_conf_tx(
1316 struct ieee80211_hw *hw,
1317 struct ieee80211_vif *vif, u16 queue,
1318 const struct ieee80211_tx_queue_params *params)
1320 wiphy_debug(hw->wiphy,
1321 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1323 params->txop, params->cw_min,
1324 params->cw_max, params->aifs);
1328 static int mac80211_hwsim_get_survey(
1329 struct ieee80211_hw *hw, int idx,
1330 struct survey_info *survey)
1332 struct ieee80211_conf *conf = &hw->conf;
1334 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1339 /* Current channel */
1340 survey->channel = conf->chandef.chan;
1343 * Magically conjured noise level --- this is only ok for simulated hardware.
1345 * A real driver which cannot determine the real channel noise MUST NOT
1346 * report any noise, especially not a magically conjured one :-)
1348 survey->filled = SURVEY_INFO_NOISE_DBM;
1349 survey->noise = -92;
1354 #ifdef CONFIG_NL80211_TESTMODE
1356 * This section contains example code for using netlink
1357 * attributes with the testmode command in nl80211.
1360 /* These enums need to be kept in sync with userspace */
1361 enum hwsim_testmode_attr {
1362 __HWSIM_TM_ATTR_INVALID = 0,
1363 HWSIM_TM_ATTR_CMD = 1,
1364 HWSIM_TM_ATTR_PS = 2,
1367 __HWSIM_TM_ATTR_AFTER_LAST,
1368 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1371 enum hwsim_testmode_cmd {
1372 HWSIM_TM_CMD_SET_PS = 0,
1373 HWSIM_TM_CMD_GET_PS = 1,
1374 HWSIM_TM_CMD_STOP_QUEUES = 2,
1375 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1378 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1379 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1380 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1383 static int hwsim_fops_ps_write(void *dat, u64 val);
1385 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1386 struct ieee80211_vif *vif,
1387 void *data, int len)
1389 struct mac80211_hwsim_data *hwsim = hw->priv;
1390 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1391 struct sk_buff *skb;
1394 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1395 hwsim_testmode_policy);
1399 if (!tb[HWSIM_TM_ATTR_CMD])
1402 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1403 case HWSIM_TM_CMD_SET_PS:
1404 if (!tb[HWSIM_TM_ATTR_PS])
1406 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1407 return hwsim_fops_ps_write(hwsim, ps);
1408 case HWSIM_TM_CMD_GET_PS:
1409 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1410 nla_total_size(sizeof(u32)));
1413 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1414 goto nla_put_failure;
1415 return cfg80211_testmode_reply(skb);
1416 case HWSIM_TM_CMD_STOP_QUEUES:
1417 ieee80211_stop_queues(hw);
1419 case HWSIM_TM_CMD_WAKE_QUEUES:
1420 ieee80211_wake_queues(hw);
1432 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1433 struct ieee80211_vif *vif,
1434 enum ieee80211_ampdu_mlme_action action,
1435 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1439 case IEEE80211_AMPDU_TX_START:
1440 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1442 case IEEE80211_AMPDU_TX_STOP_CONT:
1443 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1444 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1445 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1447 case IEEE80211_AMPDU_TX_OPERATIONAL:
1449 case IEEE80211_AMPDU_RX_START:
1450 case IEEE80211_AMPDU_RX_STOP:
1459 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1461 /* Not implemented, queues only on kernel side */
1464 static void hw_scan_work(struct work_struct *work)
1466 struct mac80211_hwsim_data *hwsim =
1467 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1468 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1471 mutex_lock(&hwsim->mutex);
1472 if (hwsim->scan_chan_idx >= req->n_channels) {
1473 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1474 ieee80211_scan_completed(hwsim->hw, false);
1475 hwsim->hw_scan_request = NULL;
1476 hwsim->hw_scan_vif = NULL;
1477 hwsim->tmp_chan = NULL;
1478 mutex_unlock(&hwsim->mutex);
1482 wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1483 req->channels[hwsim->scan_chan_idx]->center_freq);
1485 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1486 if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1492 for (i = 0; i < req->n_ssids; i++) {
1493 struct sk_buff *probe;
1495 probe = ieee80211_probereq_get(hwsim->hw,
1498 req->ssids[i].ssid_len,
1504 memcpy(skb_put(probe, req->ie_len), req->ie,
1508 mac80211_hwsim_tx_frame(hwsim->hw, probe,
1513 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1514 msecs_to_jiffies(dwell));
1515 hwsim->scan_chan_idx++;
1516 mutex_unlock(&hwsim->mutex);
1519 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1520 struct ieee80211_vif *vif,
1521 struct cfg80211_scan_request *req)
1523 struct mac80211_hwsim_data *hwsim = hw->priv;
1525 mutex_lock(&hwsim->mutex);
1526 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1527 mutex_unlock(&hwsim->mutex);
1530 hwsim->hw_scan_request = req;
1531 hwsim->hw_scan_vif = vif;
1532 hwsim->scan_chan_idx = 0;
1533 mutex_unlock(&hwsim->mutex);
1535 wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1537 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1542 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1543 struct ieee80211_vif *vif)
1545 struct mac80211_hwsim_data *hwsim = hw->priv;
1547 wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1549 cancel_delayed_work_sync(&hwsim->hw_scan);
1551 mutex_lock(&hwsim->mutex);
1552 ieee80211_scan_completed(hwsim->hw, true);
1553 hwsim->tmp_chan = NULL;
1554 hwsim->hw_scan_request = NULL;
1555 hwsim->hw_scan_vif = NULL;
1556 mutex_unlock(&hwsim->mutex);
1559 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1561 struct mac80211_hwsim_data *hwsim = hw->priv;
1563 mutex_lock(&hwsim->mutex);
1565 if (hwsim->scanning) {
1566 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1570 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1571 hwsim->scanning = true;
1574 mutex_unlock(&hwsim->mutex);
1577 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1579 struct mac80211_hwsim_data *hwsim = hw->priv;
1581 mutex_lock(&hwsim->mutex);
1583 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1584 hwsim->scanning = false;
1586 mutex_unlock(&hwsim->mutex);
1589 static void hw_roc_done(struct work_struct *work)
1591 struct mac80211_hwsim_data *hwsim =
1592 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1594 mutex_lock(&hwsim->mutex);
1595 ieee80211_remain_on_channel_expired(hwsim->hw);
1596 hwsim->tmp_chan = NULL;
1597 mutex_unlock(&hwsim->mutex);
1599 wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1602 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1603 struct ieee80211_vif *vif,
1604 struct ieee80211_channel *chan,
1606 enum ieee80211_roc_type type)
1608 struct mac80211_hwsim_data *hwsim = hw->priv;
1610 mutex_lock(&hwsim->mutex);
1611 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1612 mutex_unlock(&hwsim->mutex);
1616 hwsim->tmp_chan = chan;
1617 mutex_unlock(&hwsim->mutex);
1619 wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1620 chan->center_freq, duration);
1622 ieee80211_ready_on_channel(hw);
1624 ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1625 msecs_to_jiffies(duration));
1629 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1631 struct mac80211_hwsim_data *hwsim = hw->priv;
1633 cancel_delayed_work_sync(&hwsim->roc_done);
1635 mutex_lock(&hwsim->mutex);
1636 hwsim->tmp_chan = NULL;
1637 mutex_unlock(&hwsim->mutex);
1639 wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1644 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1645 struct ieee80211_chanctx_conf *ctx)
1647 hwsim_set_chanctx_magic(ctx);
1648 wiphy_debug(hw->wiphy,
1649 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1650 ctx->def.chan->center_freq, ctx->def.width,
1651 ctx->def.center_freq1, ctx->def.center_freq2);
1655 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1656 struct ieee80211_chanctx_conf *ctx)
1658 wiphy_debug(hw->wiphy,
1659 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1660 ctx->def.chan->center_freq, ctx->def.width,
1661 ctx->def.center_freq1, ctx->def.center_freq2);
1662 hwsim_check_chanctx_magic(ctx);
1663 hwsim_clear_chanctx_magic(ctx);
1666 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1667 struct ieee80211_chanctx_conf *ctx,
1670 hwsim_check_chanctx_magic(ctx);
1671 wiphy_debug(hw->wiphy,
1672 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1673 ctx->def.chan->center_freq, ctx->def.width,
1674 ctx->def.center_freq1, ctx->def.center_freq2);
1677 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1678 struct ieee80211_vif *vif,
1679 struct ieee80211_chanctx_conf *ctx)
1681 hwsim_check_magic(vif);
1682 hwsim_check_chanctx_magic(ctx);
1687 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1688 struct ieee80211_vif *vif,
1689 struct ieee80211_chanctx_conf *ctx)
1691 hwsim_check_magic(vif);
1692 hwsim_check_chanctx_magic(ctx);
1695 static struct ieee80211_ops mac80211_hwsim_ops =
1697 .tx = mac80211_hwsim_tx,
1698 .start = mac80211_hwsim_start,
1699 .stop = mac80211_hwsim_stop,
1700 .add_interface = mac80211_hwsim_add_interface,
1701 .change_interface = mac80211_hwsim_change_interface,
1702 .remove_interface = mac80211_hwsim_remove_interface,
1703 .config = mac80211_hwsim_config,
1704 .configure_filter = mac80211_hwsim_configure_filter,
1705 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1706 .sta_add = mac80211_hwsim_sta_add,
1707 .sta_remove = mac80211_hwsim_sta_remove,
1708 .sta_notify = mac80211_hwsim_sta_notify,
1709 .set_tim = mac80211_hwsim_set_tim,
1710 .conf_tx = mac80211_hwsim_conf_tx,
1711 .get_survey = mac80211_hwsim_get_survey,
1712 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1713 .ampdu_action = mac80211_hwsim_ampdu_action,
1714 .sw_scan_start = mac80211_hwsim_sw_scan,
1715 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1716 .flush = mac80211_hwsim_flush,
1717 .get_tsf = mac80211_hwsim_get_tsf,
1718 .set_tsf = mac80211_hwsim_set_tsf,
1722 static void mac80211_hwsim_free(void)
1724 struct list_head tmplist, *i, *tmp;
1725 struct mac80211_hwsim_data *data, *tmpdata;
1727 INIT_LIST_HEAD(&tmplist);
1729 spin_lock_bh(&hwsim_radio_lock);
1730 list_for_each_safe(i, tmp, &hwsim_radios)
1731 list_move(i, &tmplist);
1732 spin_unlock_bh(&hwsim_radio_lock);
1734 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1735 debugfs_remove_recursive(data->debugfs);
1736 ieee80211_unregister_hw(data->hw);
1737 device_release_driver(data->dev);
1738 device_unregister(data->dev);
1739 ieee80211_free_hw(data->hw);
1741 class_destroy(hwsim_class);
1744 static struct platform_driver mac80211_hwsim_driver = {
1746 .name = "mac80211_hwsim",
1747 .owner = THIS_MODULE,
1751 static const struct net_device_ops hwsim_netdev_ops = {
1752 .ndo_start_xmit = hwsim_mon_xmit,
1753 .ndo_change_mtu = eth_change_mtu,
1754 .ndo_set_mac_address = eth_mac_addr,
1755 .ndo_validate_addr = eth_validate_addr,
1758 static void hwsim_mon_setup(struct net_device *dev)
1760 dev->netdev_ops = &hwsim_netdev_ops;
1761 dev->destructor = free_netdev;
1763 dev->tx_queue_len = 0;
1764 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1765 memset(dev->dev_addr, 0, ETH_ALEN);
1766 dev->dev_addr[0] = 0x12;
1770 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1772 struct mac80211_hwsim_data *data = dat;
1773 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1774 struct sk_buff *skb;
1775 struct ieee80211_pspoll *pspoll;
1780 wiphy_debug(data->hw->wiphy,
1781 "%s: send PS-Poll to %pM for aid %d\n",
1782 __func__, vp->bssid, vp->aid);
1784 skb = dev_alloc_skb(sizeof(*pspoll));
1787 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1788 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1789 IEEE80211_STYPE_PSPOLL |
1791 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1792 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1793 memcpy(pspoll->ta, mac, ETH_ALEN);
1796 mac80211_hwsim_tx_frame(data->hw, skb,
1797 rcu_dereference(vif->chanctx_conf)->def.chan);
1801 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1802 struct ieee80211_vif *vif, int ps)
1804 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1805 struct sk_buff *skb;
1806 struct ieee80211_hdr *hdr;
1811 wiphy_debug(data->hw->wiphy,
1812 "%s: send data::nullfunc to %pM ps=%d\n",
1813 __func__, vp->bssid, ps);
1815 skb = dev_alloc_skb(sizeof(*hdr));
1818 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1819 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1820 IEEE80211_STYPE_NULLFUNC |
1821 (ps ? IEEE80211_FCTL_PM : 0));
1822 hdr->duration_id = cpu_to_le16(0);
1823 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1824 memcpy(hdr->addr2, mac, ETH_ALEN);
1825 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1828 mac80211_hwsim_tx_frame(data->hw, skb,
1829 rcu_dereference(vif->chanctx_conf)->def.chan);
1834 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1835 struct ieee80211_vif *vif)
1837 struct mac80211_hwsim_data *data = dat;
1838 hwsim_send_nullfunc(data, mac, vif, 1);
1842 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1843 struct ieee80211_vif *vif)
1845 struct mac80211_hwsim_data *data = dat;
1846 hwsim_send_nullfunc(data, mac, vif, 0);
1850 static int hwsim_fops_ps_read(void *dat, u64 *val)
1852 struct mac80211_hwsim_data *data = dat;
1857 static int hwsim_fops_ps_write(void *dat, u64 val)
1859 struct mac80211_hwsim_data *data = dat;
1860 enum ps_mode old_ps;
1862 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1863 val != PS_MANUAL_POLL)
1869 if (val == PS_MANUAL_POLL) {
1870 ieee80211_iterate_active_interfaces(data->hw,
1871 IEEE80211_IFACE_ITER_NORMAL,
1872 hwsim_send_ps_poll, data);
1873 data->ps_poll_pending = true;
1874 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1875 ieee80211_iterate_active_interfaces(data->hw,
1876 IEEE80211_IFACE_ITER_NORMAL,
1877 hwsim_send_nullfunc_ps,
1879 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1880 ieee80211_iterate_active_interfaces(data->hw,
1881 IEEE80211_IFACE_ITER_NORMAL,
1882 hwsim_send_nullfunc_no_ps,
1889 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1892 static int hwsim_write_simulate_radar(void *dat, u64 val)
1894 struct mac80211_hwsim_data *data = dat;
1896 ieee80211_radar_detected(data->hw);
1901 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
1902 hwsim_write_simulate_radar, "%llu\n");
1904 static int hwsim_fops_group_read(void *dat, u64 *val)
1906 struct mac80211_hwsim_data *data = dat;
1911 static int hwsim_fops_group_write(void *dat, u64 val)
1913 struct mac80211_hwsim_data *data = dat;
1918 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1919 hwsim_fops_group_read, hwsim_fops_group_write,
1922 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1923 struct mac_address *addr)
1925 struct mac80211_hwsim_data *data;
1926 bool _found = false;
1928 spin_lock_bh(&hwsim_radio_lock);
1929 list_for_each_entry(data, &hwsim_radios, list) {
1930 if (memcmp(data->addresses[1].addr, addr,
1931 sizeof(struct mac_address)) == 0) {
1936 spin_unlock_bh(&hwsim_radio_lock);
1944 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1945 struct genl_info *info)
1948 struct ieee80211_hdr *hdr;
1949 struct mac80211_hwsim_data *data2;
1950 struct ieee80211_tx_info *txi;
1951 struct hwsim_tx_rate *tx_attempts;
1952 unsigned long ret_skb_ptr;
1953 struct sk_buff *skb, *tmp;
1954 struct mac_address *src;
1955 unsigned int hwsim_flags;
1960 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1961 !info->attrs[HWSIM_ATTR_FLAGS] ||
1962 !info->attrs[HWSIM_ATTR_COOKIE] ||
1963 !info->attrs[HWSIM_ATTR_TX_INFO])
1966 src = (struct mac_address *)nla_data(
1967 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1968 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1970 ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1972 data2 = get_hwsim_data_ref_from_addr(src);
1977 /* look for the skb matching the cookie passed back from user */
1978 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1979 if ((unsigned long)skb == ret_skb_ptr) {
1980 skb_unlink(skb, &data2->pending);
1990 /* Tx info received because the frame was broadcasted on user space,
1991 so we get all the necessary info: tx attempts and skb control buff */
1993 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1994 info->attrs[HWSIM_ATTR_TX_INFO]);
1996 /* now send back TX status */
1997 txi = IEEE80211_SKB_CB(skb);
1999 ieee80211_tx_info_clear_status(txi);
2001 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2002 txi->status.rates[i].idx = tx_attempts[i].idx;
2003 txi->status.rates[i].count = tx_attempts[i].count;
2004 /*txi->status.rates[i].flags = 0;*/
2007 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2009 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2010 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2011 if (skb->len >= 16) {
2012 hdr = (struct ieee80211_hdr *) skb->data;
2013 mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
2016 txi->flags |= IEEE80211_TX_STAT_ACK;
2018 ieee80211_tx_status_irqsafe(data2->hw, skb);
2025 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2026 struct genl_info *info)
2029 struct mac80211_hwsim_data *data2;
2030 struct ieee80211_rx_status rx_status;
2031 struct mac_address *dst;
2034 struct sk_buff *skb = NULL;
2036 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2037 !info->attrs[HWSIM_ATTR_FRAME] ||
2038 !info->attrs[HWSIM_ATTR_RX_RATE] ||
2039 !info->attrs[HWSIM_ATTR_SIGNAL])
2042 dst = (struct mac_address *)nla_data(
2043 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2045 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2046 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2048 /* Allocate new skb here */
2049 skb = alloc_skb(frame_data_len, GFP_KERNEL);
2053 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
2055 memcpy(skb_put(skb, frame_data_len), frame_data,
2060 data2 = get_hwsim_data_ref_from_addr(dst);
2065 /* check if radio is configured properly */
2067 if (data2->idle || !data2->started)
2070 /*A frame is received from user space*/
2071 memset(&rx_status, 0, sizeof(rx_status));
2072 rx_status.freq = data2->channel->center_freq;
2073 rx_status.band = data2->channel->band;
2074 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2075 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2077 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2078 ieee80211_rx_irqsafe(data2->hw, skb);
2082 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2089 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2090 struct genl_info *info)
2095 wmediumd_portid = info->snd_portid;
2097 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2098 "switching to wmediumd mode with pid %d\n", info->snd_portid);
2102 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2106 /* Generic Netlink operations array */
2107 static const struct genl_ops hwsim_ops[] = {
2109 .cmd = HWSIM_CMD_REGISTER,
2110 .policy = hwsim_genl_policy,
2111 .doit = hwsim_register_received_nl,
2112 .flags = GENL_ADMIN_PERM,
2115 .cmd = HWSIM_CMD_FRAME,
2116 .policy = hwsim_genl_policy,
2117 .doit = hwsim_cloned_frame_received_nl,
2120 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2121 .policy = hwsim_genl_policy,
2122 .doit = hwsim_tx_info_frame_received_nl,
2126 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2127 unsigned long state,
2130 struct netlink_notify *notify = _notify;
2132 if (state != NETLINK_URELEASE)
2135 if (notify->portid == wmediumd_portid) {
2136 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2137 " socket, switching to perfect channel medium\n");
2138 wmediumd_portid = 0;
2144 static struct notifier_block hwsim_netlink_notifier = {
2145 .notifier_call = mac80211_hwsim_netlink_notify,
2148 static int hwsim_init_netlink(void)
2152 /* userspace test API hasn't been adjusted for multi-channel */
2156 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2158 rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2162 rc = netlink_register_notifier(&hwsim_netlink_notifier);
2169 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2173 static void hwsim_exit_netlink(void)
2177 /* userspace test API hasn't been adjusted for multi-channel */
2181 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2182 /* unregister the notifier */
2183 netlink_unregister_notifier(&hwsim_netlink_notifier);
2184 /* unregister the family */
2185 ret = genl_unregister_family(&hwsim_genl_family);
2187 printk(KERN_DEBUG "mac80211_hwsim: "
2188 "unregister family %i\n", ret);
2191 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2192 { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2193 { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
2194 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2195 #ifdef CONFIG_MAC80211_MESH
2196 BIT(NL80211_IFTYPE_MESH_POINT) |
2198 BIT(NL80211_IFTYPE_AP) |
2199 BIT(NL80211_IFTYPE_P2P_GO) },
2200 { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2203 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
2204 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
2207 static struct ieee80211_iface_combination hwsim_if_comb[] = {
2209 .limits = hwsim_if_limits,
2210 .n_limits = ARRAY_SIZE(hwsim_if_limits),
2211 .max_interfaces = 2048,
2212 .num_different_channels = 1,
2215 .limits = hwsim_if_dfs_limits,
2216 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
2217 .max_interfaces = 8,
2218 .num_different_channels = 1,
2219 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2220 BIT(NL80211_CHAN_WIDTH_20) |
2221 BIT(NL80211_CHAN_WIDTH_40) |
2222 BIT(NL80211_CHAN_WIDTH_80) |
2223 BIT(NL80211_CHAN_WIDTH_160),
2227 static int __init init_mac80211_hwsim(void)
2231 struct mac80211_hwsim_data *data;
2232 struct ieee80211_hw *hw;
2233 enum ieee80211_band band;
2235 if (radios < 1 || radios > 100)
2242 hwsim_if_comb[0].num_different_channels = channels;
2243 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2244 mac80211_hwsim_ops.cancel_hw_scan =
2245 mac80211_hwsim_cancel_hw_scan;
2246 mac80211_hwsim_ops.sw_scan_start = NULL;
2247 mac80211_hwsim_ops.sw_scan_complete = NULL;
2248 mac80211_hwsim_ops.remain_on_channel =
2250 mac80211_hwsim_ops.cancel_remain_on_channel =
2251 mac80211_hwsim_croc;
2252 mac80211_hwsim_ops.add_chanctx =
2253 mac80211_hwsim_add_chanctx;
2254 mac80211_hwsim_ops.remove_chanctx =
2255 mac80211_hwsim_remove_chanctx;
2256 mac80211_hwsim_ops.change_chanctx =
2257 mac80211_hwsim_change_chanctx;
2258 mac80211_hwsim_ops.assign_vif_chanctx =
2259 mac80211_hwsim_assign_vif_chanctx;
2260 mac80211_hwsim_ops.unassign_vif_chanctx =
2261 mac80211_hwsim_unassign_vif_chanctx;
2264 spin_lock_init(&hwsim_radio_lock);
2265 INIT_LIST_HEAD(&hwsim_radios);
2267 err = platform_driver_register(&mac80211_hwsim_driver);
2271 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2272 if (IS_ERR(hwsim_class)) {
2273 err = PTR_ERR(hwsim_class);
2274 goto failed_unregister_driver;
2277 memset(addr, 0, ETH_ALEN);
2280 for (i = 0; i < radios; i++) {
2281 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2283 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2285 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2293 data->dev = device_create(hwsim_class, NULL, 0, hw,
2295 if (IS_ERR(data->dev)) {
2297 "mac80211_hwsim: device_create failed (%ld)\n",
2298 PTR_ERR(data->dev));
2300 goto failed_drvdata;
2302 data->dev->driver = &mac80211_hwsim_driver.driver;
2303 err = device_bind_driver(data->dev);
2306 "mac80211_hwsim: device_bind_driver failed (%d)\n",
2311 skb_queue_head_init(&data->pending);
2313 SET_IEEE80211_DEV(hw, data->dev);
2316 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2317 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2318 data->addresses[1].addr[0] |= 0x40;
2319 hw->wiphy->n_addresses = 2;
2320 hw->wiphy->addresses = data->addresses;
2322 hw->wiphy->iface_combinations = hwsim_if_comb;
2323 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2326 hw->wiphy->max_scan_ssids = 255;
2327 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2328 hw->wiphy->max_remain_on_channel_duration = 1000;
2329 /* For channels > 1 DFS is not allowed */
2330 hw->wiphy->n_iface_combinations = 1;
2333 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2334 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2336 hw->channel_change_time = 1;
2338 hw->offchannel_tx_hw_queue = 4;
2339 hw->wiphy->interface_modes =
2340 BIT(NL80211_IFTYPE_STATION) |
2341 BIT(NL80211_IFTYPE_AP) |
2342 BIT(NL80211_IFTYPE_P2P_CLIENT) |
2343 BIT(NL80211_IFTYPE_P2P_GO) |
2344 BIT(NL80211_IFTYPE_ADHOC) |
2345 BIT(NL80211_IFTYPE_MESH_POINT) |
2346 BIT(NL80211_IFTYPE_P2P_DEVICE);
2348 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2349 IEEE80211_HW_SIGNAL_DBM |
2350 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2351 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2352 IEEE80211_HW_AMPDU_AGGREGATION |
2353 IEEE80211_HW_WANT_MONITOR_VIF |
2354 IEEE80211_HW_QUEUE_CONTROL |
2355 IEEE80211_HW_SUPPORTS_HT_CCK_RATES;
2357 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2359 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2360 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2361 WIPHY_FLAG_AP_UAPSD;
2362 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
2364 /* ask mac80211 to reserve space for magic */
2365 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2366 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2367 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2369 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2370 sizeof(hwsim_channels_2ghz));
2371 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2372 sizeof(hwsim_channels_5ghz));
2373 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2375 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2376 struct ieee80211_supported_band *sband = &data->bands[band];
2378 case IEEE80211_BAND_2GHZ:
2379 sband->channels = data->channels_2ghz;
2381 ARRAY_SIZE(hwsim_channels_2ghz);
2382 sband->bitrates = data->rates;
2383 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2385 case IEEE80211_BAND_5GHZ:
2386 sband->channels = data->channels_5ghz;
2388 ARRAY_SIZE(hwsim_channels_5ghz);
2389 sband->bitrates = data->rates + 4;
2390 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2396 sband->ht_cap.ht_supported = true;
2397 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2398 IEEE80211_HT_CAP_GRN_FLD |
2399 IEEE80211_HT_CAP_SGI_40 |
2400 IEEE80211_HT_CAP_DSSSCCK40;
2401 sband->ht_cap.ampdu_factor = 0x3;
2402 sband->ht_cap.ampdu_density = 0x6;
2403 memset(&sband->ht_cap.mcs, 0,
2404 sizeof(sband->ht_cap.mcs));
2405 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2406 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2407 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2409 hw->wiphy->bands[band] = sband;
2411 sband->vht_cap.vht_supported = true;
2412 sband->vht_cap.cap =
2413 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2414 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2415 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2416 IEEE80211_VHT_CAP_RXLDPC |
2417 IEEE80211_VHT_CAP_SHORT_GI_80 |
2418 IEEE80211_VHT_CAP_SHORT_GI_160 |
2419 IEEE80211_VHT_CAP_TXSTBC |
2420 IEEE80211_VHT_CAP_RXSTBC_1 |
2421 IEEE80211_VHT_CAP_RXSTBC_2 |
2422 IEEE80211_VHT_CAP_RXSTBC_3 |
2423 IEEE80211_VHT_CAP_RXSTBC_4 |
2424 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2425 sband->vht_cap.vht_mcs.rx_mcs_map =
2426 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2427 IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2428 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2429 IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2430 IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2431 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2432 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2433 IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2434 sband->vht_cap.vht_mcs.tx_mcs_map =
2435 sband->vht_cap.vht_mcs.rx_mcs_map;
2437 /* By default all radios are belonging to the first group */
2439 mutex_init(&data->mutex);
2441 /* Enable frame retransmissions for lossy channels */
2443 hw->max_rate_tries = 11;
2445 /* Work to be done prior to ieee80211_register_hw() */
2447 case HWSIM_REGTEST_DISABLED:
2448 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2449 case HWSIM_REGTEST_DRIVER_REG_ALL:
2450 case HWSIM_REGTEST_DIFF_COUNTRY:
2452 * Nothing to be done for driver regulatory domain
2453 * hints prior to ieee80211_register_hw()
2456 case HWSIM_REGTEST_WORLD_ROAM:
2458 hw->wiphy->regulatory_flags |=
2459 REGULATORY_CUSTOM_REG;
2460 wiphy_apply_custom_regulatory(hw->wiphy,
2461 &hwsim_world_regdom_custom_01);
2464 case HWSIM_REGTEST_CUSTOM_WORLD:
2465 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2466 wiphy_apply_custom_regulatory(hw->wiphy,
2467 &hwsim_world_regdom_custom_01);
2469 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2471 hw->wiphy->regulatory_flags |=
2472 REGULATORY_CUSTOM_REG;
2473 wiphy_apply_custom_regulatory(hw->wiphy,
2474 &hwsim_world_regdom_custom_01);
2475 } else if (i == 1) {
2476 hw->wiphy->regulatory_flags |=
2477 REGULATORY_CUSTOM_REG;
2478 wiphy_apply_custom_regulatory(hw->wiphy,
2479 &hwsim_world_regdom_custom_02);
2482 case HWSIM_REGTEST_STRICT_ALL:
2483 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2485 case HWSIM_REGTEST_STRICT_FOLLOW:
2486 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2488 hw->wiphy->regulatory_flags |=
2489 REGULATORY_STRICT_REG;
2491 case HWSIM_REGTEST_ALL:
2493 hw->wiphy->regulatory_flags |=
2494 REGULATORY_CUSTOM_REG;
2495 wiphy_apply_custom_regulatory(hw->wiphy,
2496 &hwsim_world_regdom_custom_01);
2497 } else if (i == 1) {
2498 hw->wiphy->regulatory_flags |=
2499 REGULATORY_CUSTOM_REG;
2500 wiphy_apply_custom_regulatory(hw->wiphy,
2501 &hwsim_world_regdom_custom_02);
2503 hw->wiphy->regulatory_flags |=
2504 REGULATORY_STRICT_REG;
2510 /* give the regulatory workqueue a chance to run */
2512 schedule_timeout_interruptible(1);
2513 err = ieee80211_register_hw(hw);
2515 printk(KERN_DEBUG "mac80211_hwsim: "
2516 "ieee80211_register_hw failed (%d)\n", err);
2520 /* Work to be done after to ieee80211_register_hw() */
2522 case HWSIM_REGTEST_WORLD_ROAM:
2523 case HWSIM_REGTEST_DISABLED:
2525 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2527 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2529 case HWSIM_REGTEST_DRIVER_REG_ALL:
2530 case HWSIM_REGTEST_STRICT_ALL:
2531 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2533 case HWSIM_REGTEST_DIFF_COUNTRY:
2534 if (i < ARRAY_SIZE(hwsim_alpha2s))
2535 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2537 case HWSIM_REGTEST_CUSTOM_WORLD:
2538 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2540 * Nothing to be done for custom world regulatory
2541 * domains after to ieee80211_register_hw
2544 case HWSIM_REGTEST_STRICT_FOLLOW:
2546 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2548 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2550 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2552 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2554 case HWSIM_REGTEST_ALL:
2556 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2558 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2560 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2566 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2567 hw->wiphy->perm_addr);
2569 data->debugfs = debugfs_create_dir("hwsim",
2570 hw->wiphy->debugfsdir);
2571 debugfs_create_file("ps", 0666, data->debugfs, data,
2573 debugfs_create_file("group", 0666, data->debugfs, data,
2576 debugfs_create_file("dfs_simulate_radar", 0222,
2578 data, &hwsim_simulate_radar);
2580 tasklet_hrtimer_init(&data->beacon_timer,
2581 mac80211_hwsim_beacon,
2582 CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2584 list_add_tail(&data->list, &hwsim_radios);
2587 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2588 if (hwsim_mon == NULL) {
2595 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2600 err = register_netdevice(hwsim_mon);
2606 err = hwsim_init_netlink();
2613 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2618 free_netdev(hwsim_mon);
2619 mac80211_hwsim_free();
2623 device_unregister(data->dev);
2625 ieee80211_free_hw(hw);
2627 mac80211_hwsim_free();
2628 failed_unregister_driver:
2629 platform_driver_unregister(&mac80211_hwsim_driver);
2632 module_init(init_mac80211_hwsim);
2634 static void __exit exit_mac80211_hwsim(void)
2636 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2638 hwsim_exit_netlink();
2640 mac80211_hwsim_free();
2641 unregister_netdev(hwsim_mon);
2642 platform_driver_unregister(&mac80211_hwsim_driver);
2644 module_exit(exit_mac80211_hwsim);