2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
12 * - IBSS mode simulation (Beacon transmission with competition for "air time")
13 * - RX filtering based on filter configuration (data->rx_filter)
16 #include <linux/list.h>
17 #include <linux/spinlock.h>
18 #include <net/mac80211.h>
19 #include <net/ieee80211_radiotap.h>
20 #include <linux/if_arp.h>
21 #include <linux/rtnetlink.h>
22 #include <linux/etherdevice.h>
23 #include <linux/debugfs.h>
25 MODULE_AUTHOR("Jouni Malinen");
26 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
27 MODULE_LICENSE("GPL");
29 static int radios = 2;
30 module_param(radios, int, 0444);
31 MODULE_PARM_DESC(radios, "Number of simulated radios");
34 * enum hwsim_regtest - the type of regulatory tests we offer
36 * These are the different values you can use for the regtest
37 * module parameter. This is useful to help test world roaming
38 * and the driver regulatory_hint() call and combinations of these.
39 * If you want to do specific alpha2 regulatory domain tests simply
40 * use the userspace regulatory request as that will be respected as
41 * well without the need of this module parameter. This is designed
42 * only for testing the driver regulatory request, world roaming
43 * and all possible combinations.
45 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
46 * this is the default value.
47 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
48 * hint, only one driver regulatory hint will be sent as such the
49 * secondary radios are expected to follow.
50 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
51 * request with all radios reporting the same regulatory domain.
52 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
53 * different regulatory domains requests. Expected behaviour is for
54 * an intersection to occur but each device will still use their
55 * respective regulatory requested domains. Subsequent radios will
56 * use the resulting intersection.
57 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
58 * this by using a custom beacon-capable regulatory domain for the first
59 * radio. All other device world roam.
60 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
61 * domain requests. All radios will adhere to this custom world regulatory
63 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
64 * domain requests. The first radio will adhere to the first custom world
65 * regulatory domain, the second one to the second custom world regulatory
66 * domain. All other devices will world roam.
67 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
68 * settings, only the first radio will send a regulatory domain request
69 * and use strict settings. The rest of the radios are expected to follow.
70 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
71 * settings. All radios will adhere to this.
72 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
73 * domain settings, combined with secondary driver regulatory domain
74 * settings. The first radio will get a strict regulatory domain setting
75 * using the first driver regulatory request and the second radio will use
76 * non-strict settings using the second driver regulatory request. All
77 * other devices should follow the intersection created between the
79 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
80 * at least 6 radios for a complete test. We will test in this order:
81 * 1 - driver custom world regulatory domain
82 * 2 - second custom world regulatory domain
83 * 3 - first driver regulatory domain request
84 * 4 - second driver regulatory domain request
85 * 5 - strict regulatory domain settings using the third driver regulatory
87 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
88 * regulatory requests.
91 HWSIM_REGTEST_DISABLED = 0,
92 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
93 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
94 HWSIM_REGTEST_DIFF_COUNTRY = 3,
95 HWSIM_REGTEST_WORLD_ROAM = 4,
96 HWSIM_REGTEST_CUSTOM_WORLD = 5,
97 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
98 HWSIM_REGTEST_STRICT_FOLLOW = 7,
99 HWSIM_REGTEST_STRICT_ALL = 8,
100 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
101 HWSIM_REGTEST_ALL = 10,
104 /* Set to one of the HWSIM_REGTEST_* values above */
105 static int regtest = HWSIM_REGTEST_DISABLED;
106 module_param(regtest, int, 0444);
107 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
109 static const char *hwsim_alpha2s[] = {
118 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
122 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
123 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
124 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
125 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
129 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
133 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
134 REG_RULE(5725-10, 5850+10, 40, 0, 30,
135 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
139 struct hwsim_vif_priv {
146 #define HWSIM_VIF_MAGIC 0x69537748
148 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
150 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
151 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
154 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
156 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
157 vp->magic = HWSIM_VIF_MAGIC;
160 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
162 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
166 struct hwsim_sta_priv {
170 #define HWSIM_STA_MAGIC 0x6d537748
172 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
174 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
175 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
178 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
180 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
181 sp->magic = HWSIM_STA_MAGIC;
184 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
186 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
190 static struct class *hwsim_class;
192 static struct net_device *hwsim_mon; /* global monitor netdev */
194 #define CHAN2G(_freq) { \
195 .band = IEEE80211_BAND_2GHZ, \
196 .center_freq = (_freq), \
197 .hw_value = (_freq), \
201 #define CHAN5G(_freq) { \
202 .band = IEEE80211_BAND_5GHZ, \
203 .center_freq = (_freq), \
204 .hw_value = (_freq), \
208 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
209 CHAN2G(2412), /* Channel 1 */
210 CHAN2G(2417), /* Channel 2 */
211 CHAN2G(2422), /* Channel 3 */
212 CHAN2G(2427), /* Channel 4 */
213 CHAN2G(2432), /* Channel 5 */
214 CHAN2G(2437), /* Channel 6 */
215 CHAN2G(2442), /* Channel 7 */
216 CHAN2G(2447), /* Channel 8 */
217 CHAN2G(2452), /* Channel 9 */
218 CHAN2G(2457), /* Channel 10 */
219 CHAN2G(2462), /* Channel 11 */
220 CHAN2G(2467), /* Channel 12 */
221 CHAN2G(2472), /* Channel 13 */
222 CHAN2G(2484), /* Channel 14 */
225 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
226 CHAN5G(5180), /* Channel 36 */
227 CHAN5G(5200), /* Channel 40 */
228 CHAN5G(5220), /* Channel 44 */
229 CHAN5G(5240), /* Channel 48 */
231 CHAN5G(5260), /* Channel 52 */
232 CHAN5G(5280), /* Channel 56 */
233 CHAN5G(5300), /* Channel 60 */
234 CHAN5G(5320), /* Channel 64 */
236 CHAN5G(5500), /* Channel 100 */
237 CHAN5G(5520), /* Channel 104 */
238 CHAN5G(5540), /* Channel 108 */
239 CHAN5G(5560), /* Channel 112 */
240 CHAN5G(5580), /* Channel 116 */
241 CHAN5G(5600), /* Channel 120 */
242 CHAN5G(5620), /* Channel 124 */
243 CHAN5G(5640), /* Channel 128 */
244 CHAN5G(5660), /* Channel 132 */
245 CHAN5G(5680), /* Channel 136 */
246 CHAN5G(5700), /* Channel 140 */
248 CHAN5G(5745), /* Channel 149 */
249 CHAN5G(5765), /* Channel 153 */
250 CHAN5G(5785), /* Channel 157 */
251 CHAN5G(5805), /* Channel 161 */
252 CHAN5G(5825), /* Channel 165 */
255 static const struct ieee80211_rate hwsim_rates[] = {
257 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
258 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
259 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
270 static spinlock_t hwsim_radio_lock;
271 static struct list_head hwsim_radios;
273 struct mac80211_hwsim_data {
274 struct list_head list;
275 struct ieee80211_hw *hw;
277 struct ieee80211_supported_band bands[2];
278 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
279 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
280 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
282 struct ieee80211_channel *channel;
283 unsigned long beacon_int; /* in jiffies unit */
284 unsigned int rx_filter;
286 struct timer_list beacon_timer;
288 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
290 bool ps_poll_pending;
291 struct dentry *debugfs;
292 struct dentry *debugfs_ps;
295 * Only radios in the same group can communicate together (the
296 * channel has to match too). Each bit represents a group. A
297 * radio can be in more then one group.
300 struct dentry *debugfs_group;
304 struct hwsim_radiotap_hdr {
305 struct ieee80211_radiotap_header hdr;
310 } __attribute__ ((packed));
313 static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev)
315 /* TODO: allow packet injection */
321 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
322 struct sk_buff *tx_skb)
324 struct mac80211_hwsim_data *data = hw->priv;
326 struct hwsim_radiotap_hdr *hdr;
328 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
329 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
331 if (!netif_running(hwsim_mon))
334 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
338 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
339 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
341 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
342 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
343 (1 << IEEE80211_RADIOTAP_RATE) |
344 (1 << IEEE80211_RADIOTAP_CHANNEL));
346 hdr->rt_rate = txrate->bitrate / 5;
347 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
348 flags = IEEE80211_CHAN_2GHZ;
349 if (txrate->flags & IEEE80211_RATE_ERP_G)
350 flags |= IEEE80211_CHAN_OFDM;
352 flags |= IEEE80211_CHAN_CCK;
353 hdr->rt_chbitmask = cpu_to_le16(flags);
355 skb->dev = hwsim_mon;
356 skb_set_mac_header(skb, 0);
357 skb->ip_summed = CHECKSUM_UNNECESSARY;
358 skb->pkt_type = PACKET_OTHERHOST;
359 skb->protocol = htons(ETH_P_802_2);
360 memset(skb->cb, 0, sizeof(skb->cb));
365 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
374 /* TODO: accept (some) Beacons by default and other frames only
375 * if pending PS-Poll has been sent */
378 /* Allow unicast frames to own address if there is a pending
380 if (data->ps_poll_pending &&
381 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
383 data->ps_poll_pending = false;
393 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
396 struct mac80211_hwsim_data *data = hw->priv, *data2;
398 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
399 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
400 struct ieee80211_rx_status rx_status;
402 memset(&rx_status, 0, sizeof(rx_status));
403 /* TODO: set mactime */
404 rx_status.freq = data->channel->center_freq;
405 rx_status.band = data->channel->band;
406 rx_status.rate_idx = info->control.rates[0].idx;
407 /* TODO: simulate signal strength (and optional packet drop) */
409 if (data->ps != PS_DISABLED)
410 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
412 /* Copy skb to all enabled radios that are on the current frequency */
413 spin_lock(&hwsim_radio_lock);
414 list_for_each_entry(data2, &hwsim_radios, list) {
415 struct sk_buff *nskb;
420 if (!data2->started || !hwsim_ps_rx_ok(data2, skb) ||
421 !data->channel || !data2->channel ||
422 data->channel->center_freq != data2->channel->center_freq ||
423 !(data->group & data2->group))
426 nskb = skb_copy(skb, GFP_ATOMIC);
430 if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr,
433 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
434 ieee80211_rx_irqsafe(data2->hw, nskb);
436 spin_unlock(&hwsim_radio_lock);
442 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
445 struct ieee80211_tx_info *txi;
447 mac80211_hwsim_monitor_rx(hw, skb);
450 /* Should not happen; just a sanity check for addr1 use */
455 ack = mac80211_hwsim_tx_frame(hw, skb);
457 txi = IEEE80211_SKB_CB(skb);
459 if (txi->control.vif)
460 hwsim_check_magic(txi->control.vif);
461 if (txi->control.sta)
462 hwsim_check_sta_magic(txi->control.sta);
464 ieee80211_tx_info_clear_status(txi);
465 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
466 txi->flags |= IEEE80211_TX_STAT_ACK;
467 ieee80211_tx_status_irqsafe(hw, skb);
472 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
474 struct mac80211_hwsim_data *data = hw->priv;
475 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
481 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
483 struct mac80211_hwsim_data *data = hw->priv;
485 del_timer(&data->beacon_timer);
486 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
490 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
491 struct ieee80211_if_init_conf *conf)
493 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
494 wiphy_name(hw->wiphy), __func__, conf->type,
496 hwsim_set_magic(conf->vif);
501 static void mac80211_hwsim_remove_interface(
502 struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
504 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
505 wiphy_name(hw->wiphy), __func__, conf->type,
507 hwsim_check_magic(conf->vif);
508 hwsim_clear_magic(conf->vif);
512 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
513 struct ieee80211_vif *vif)
515 struct ieee80211_hw *hw = arg;
517 struct ieee80211_tx_info *info;
519 hwsim_check_magic(vif);
521 if (vif->type != NL80211_IFTYPE_AP &&
522 vif->type != NL80211_IFTYPE_MESH_POINT)
525 skb = ieee80211_beacon_get(hw, vif);
528 info = IEEE80211_SKB_CB(skb);
530 mac80211_hwsim_monitor_rx(hw, skb);
531 mac80211_hwsim_tx_frame(hw, skb);
536 static void mac80211_hwsim_beacon(unsigned long arg)
538 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
539 struct mac80211_hwsim_data *data = hw->priv;
544 ieee80211_iterate_active_interfaces_atomic(
545 hw, mac80211_hwsim_beacon_tx, hw);
547 data->beacon_timer.expires = jiffies + data->beacon_int;
548 add_timer(&data->beacon_timer);
552 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
554 struct mac80211_hwsim_data *data = hw->priv;
555 struct ieee80211_conf *conf = &hw->conf;
557 printk(KERN_DEBUG "%s:%s (freq=%d idle=%d ps=%d)\n",
558 wiphy_name(hw->wiphy), __func__,
559 conf->channel->center_freq,
560 !!(conf->flags & IEEE80211_CONF_IDLE),
561 !!(conf->flags & IEEE80211_CONF_PS));
563 data->channel = conf->channel;
564 if (!data->started || !data->beacon_int)
565 del_timer(&data->beacon_timer);
567 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
573 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
574 unsigned int changed_flags,
575 unsigned int *total_flags,
577 struct dev_addr_list *mc_list)
579 struct mac80211_hwsim_data *data = hw->priv;
581 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
584 if (*total_flags & FIF_PROMISC_IN_BSS)
585 data->rx_filter |= FIF_PROMISC_IN_BSS;
586 if (*total_flags & FIF_ALLMULTI)
587 data->rx_filter |= FIF_ALLMULTI;
589 *total_flags = data->rx_filter;
592 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
593 struct ieee80211_vif *vif,
594 struct ieee80211_bss_conf *info,
597 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
598 struct mac80211_hwsim_data *data = hw->priv;
600 hwsim_check_magic(vif);
602 printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
603 wiphy_name(hw->wiphy), __func__, changed);
605 if (changed & BSS_CHANGED_BSSID) {
606 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
607 wiphy_name(hw->wiphy), __func__,
609 memcpy(vp->bssid, info->bssid, ETH_ALEN);
612 if (changed & BSS_CHANGED_ASSOC) {
613 printk(KERN_DEBUG " %s: ASSOC: assoc=%d aid=%d\n",
614 wiphy_name(hw->wiphy), info->assoc, info->aid);
615 vp->assoc = info->assoc;
619 if (changed & BSS_CHANGED_BEACON_INT) {
620 printk(KERN_DEBUG " %s: BCNINT: %d\n",
621 wiphy_name(hw->wiphy), info->beacon_int);
622 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
623 if (WARN_ON(!data->beacon_int))
624 data->beacon_int = 1;
627 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
628 printk(KERN_DEBUG " %s: ERP_CTS_PROT: %d\n",
629 wiphy_name(hw->wiphy), info->use_cts_prot);
632 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
633 printk(KERN_DEBUG " %s: ERP_PREAMBLE: %d\n",
634 wiphy_name(hw->wiphy), info->use_short_preamble);
637 if (changed & BSS_CHANGED_ERP_SLOT) {
638 printk(KERN_DEBUG " %s: ERP_SLOT: %d\n",
639 wiphy_name(hw->wiphy), info->use_short_slot);
642 if (changed & BSS_CHANGED_HT) {
643 printk(KERN_DEBUG " %s: HT: op_mode=0x%x\n",
644 wiphy_name(hw->wiphy),
645 info->ht_operation_mode);
648 if (changed & BSS_CHANGED_BASIC_RATES) {
649 printk(KERN_DEBUG " %s: BASIC_RATES: 0x%llx\n",
650 wiphy_name(hw->wiphy),
651 (unsigned long long) info->basic_rates);
655 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
656 struct ieee80211_vif *vif,
657 enum sta_notify_cmd cmd,
658 struct ieee80211_sta *sta)
660 hwsim_check_magic(vif);
663 hwsim_set_sta_magic(sta);
665 case STA_NOTIFY_REMOVE:
666 hwsim_clear_sta_magic(sta);
668 case STA_NOTIFY_SLEEP:
669 case STA_NOTIFY_AWAKE:
670 /* TODO: make good use of these flags */
675 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
676 struct ieee80211_sta *sta,
679 hwsim_check_sta_magic(sta);
683 static int mac80211_hwsim_conf_tx(
684 struct ieee80211_hw *hw, u16 queue,
685 const struct ieee80211_tx_queue_params *params)
687 printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
689 wiphy_name(hw->wiphy), __func__, queue,
690 params->txop, params->cw_min, params->cw_max, params->aifs);
694 static const struct ieee80211_ops mac80211_hwsim_ops =
696 .tx = mac80211_hwsim_tx,
697 .start = mac80211_hwsim_start,
698 .stop = mac80211_hwsim_stop,
699 .add_interface = mac80211_hwsim_add_interface,
700 .remove_interface = mac80211_hwsim_remove_interface,
701 .config = mac80211_hwsim_config,
702 .configure_filter = mac80211_hwsim_configure_filter,
703 .bss_info_changed = mac80211_hwsim_bss_info_changed,
704 .sta_notify = mac80211_hwsim_sta_notify,
705 .set_tim = mac80211_hwsim_set_tim,
706 .conf_tx = mac80211_hwsim_conf_tx,
710 static void mac80211_hwsim_free(void)
712 struct list_head tmplist, *i, *tmp;
713 struct mac80211_hwsim_data *data;
715 INIT_LIST_HEAD(&tmplist);
717 spin_lock_bh(&hwsim_radio_lock);
718 list_for_each_safe(i, tmp, &hwsim_radios)
719 list_move(i, &tmplist);
720 spin_unlock_bh(&hwsim_radio_lock);
722 list_for_each_entry(data, &tmplist, list) {
723 debugfs_remove(data->debugfs_group);
724 debugfs_remove(data->debugfs_ps);
725 debugfs_remove(data->debugfs);
726 ieee80211_unregister_hw(data->hw);
727 device_unregister(data->dev);
728 ieee80211_free_hw(data->hw);
730 class_destroy(hwsim_class);
734 static struct device_driver mac80211_hwsim_driver = {
735 .name = "mac80211_hwsim"
738 static const struct net_device_ops hwsim_netdev_ops = {
739 .ndo_start_xmit = hwsim_mon_xmit,
740 .ndo_change_mtu = eth_change_mtu,
741 .ndo_set_mac_address = eth_mac_addr,
742 .ndo_validate_addr = eth_validate_addr,
745 static void hwsim_mon_setup(struct net_device *dev)
747 dev->netdev_ops = &hwsim_netdev_ops;
748 dev->destructor = free_netdev;
750 dev->tx_queue_len = 0;
751 dev->type = ARPHRD_IEEE80211_RADIOTAP;
752 memset(dev->dev_addr, 0, ETH_ALEN);
753 dev->dev_addr[0] = 0x12;
757 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
759 struct mac80211_hwsim_data *data = dat;
760 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
761 DECLARE_MAC_BUF(buf);
763 struct ieee80211_pspoll *pspoll;
768 printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
769 wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
771 skb = dev_alloc_skb(sizeof(*pspoll));
774 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
775 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
776 IEEE80211_STYPE_PSPOLL |
778 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
779 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
780 memcpy(pspoll->ta, mac, ETH_ALEN);
781 if (!mac80211_hwsim_tx_frame(data->hw, skb))
782 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
787 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
788 struct ieee80211_vif *vif, int ps)
790 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
791 DECLARE_MAC_BUF(buf);
793 struct ieee80211_hdr *hdr;
798 printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
799 wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
801 skb = dev_alloc_skb(sizeof(*hdr));
804 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
805 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
806 IEEE80211_STYPE_NULLFUNC |
807 (ps ? IEEE80211_FCTL_PM : 0));
808 hdr->duration_id = cpu_to_le16(0);
809 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
810 memcpy(hdr->addr2, mac, ETH_ALEN);
811 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
812 if (!mac80211_hwsim_tx_frame(data->hw, skb))
813 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
818 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
819 struct ieee80211_vif *vif)
821 struct mac80211_hwsim_data *data = dat;
822 hwsim_send_nullfunc(data, mac, vif, 1);
826 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
827 struct ieee80211_vif *vif)
829 struct mac80211_hwsim_data *data = dat;
830 hwsim_send_nullfunc(data, mac, vif, 0);
834 static int hwsim_fops_ps_read(void *dat, u64 *val)
836 struct mac80211_hwsim_data *data = dat;
841 static int hwsim_fops_ps_write(void *dat, u64 val)
843 struct mac80211_hwsim_data *data = dat;
846 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
847 val != PS_MANUAL_POLL)
853 if (val == PS_MANUAL_POLL) {
854 ieee80211_iterate_active_interfaces(data->hw,
855 hwsim_send_ps_poll, data);
856 data->ps_poll_pending = true;
857 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
858 ieee80211_iterate_active_interfaces(data->hw,
859 hwsim_send_nullfunc_ps,
861 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
862 ieee80211_iterate_active_interfaces(data->hw,
863 hwsim_send_nullfunc_no_ps,
870 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
874 static int hwsim_fops_group_read(void *dat, u64 *val)
876 struct mac80211_hwsim_data *data = dat;
881 static int hwsim_fops_group_write(void *dat, u64 val)
883 struct mac80211_hwsim_data *data = dat;
888 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
889 hwsim_fops_group_read, hwsim_fops_group_write,
892 static int __init init_mac80211_hwsim(void)
896 struct mac80211_hwsim_data *data;
897 struct ieee80211_hw *hw;
898 enum ieee80211_band band;
900 if (radios < 1 || radios > 100)
903 spin_lock_init(&hwsim_radio_lock);
904 INIT_LIST_HEAD(&hwsim_radios);
906 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
907 if (IS_ERR(hwsim_class))
908 return PTR_ERR(hwsim_class);
910 memset(addr, 0, ETH_ALEN);
913 for (i = 0; i < radios; i++) {
914 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
916 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
918 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
926 data->dev = device_create(hwsim_class, NULL, 0, hw,
928 if (IS_ERR(data->dev)) {
930 "mac80211_hwsim: device_create "
931 "failed (%ld)\n", PTR_ERR(data->dev));
935 data->dev->driver = &mac80211_hwsim_driver;
937 SET_IEEE80211_DEV(hw, data->dev);
940 SET_IEEE80211_PERM_ADDR(hw, addr);
942 hw->channel_change_time = 1;
944 hw->wiphy->interface_modes =
945 BIT(NL80211_IFTYPE_STATION) |
946 BIT(NL80211_IFTYPE_AP) |
947 BIT(NL80211_IFTYPE_MESH_POINT);
949 hw->flags = IEEE80211_HW_MFP_CAPABLE;
951 /* ask mac80211 to reserve space for magic */
952 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
953 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
955 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
956 sizeof(hwsim_channels_2ghz));
957 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
958 sizeof(hwsim_channels_5ghz));
959 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
961 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
962 struct ieee80211_supported_band *sband = &data->bands[band];
964 case IEEE80211_BAND_2GHZ:
965 sband->channels = data->channels_2ghz;
967 ARRAY_SIZE(hwsim_channels_2ghz);
969 case IEEE80211_BAND_5GHZ:
970 sband->channels = data->channels_5ghz;
972 ARRAY_SIZE(hwsim_channels_5ghz);
978 sband->bitrates = data->rates;
979 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
981 sband->ht_cap.ht_supported = true;
982 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
983 IEEE80211_HT_CAP_GRN_FLD |
984 IEEE80211_HT_CAP_SGI_40 |
985 IEEE80211_HT_CAP_DSSSCCK40;
986 sband->ht_cap.ampdu_factor = 0x3;
987 sband->ht_cap.ampdu_density = 0x6;
988 memset(&sband->ht_cap.mcs, 0,
989 sizeof(sband->ht_cap.mcs));
990 sband->ht_cap.mcs.rx_mask[0] = 0xff;
991 sband->ht_cap.mcs.rx_mask[1] = 0xff;
992 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
994 hw->wiphy->bands[band] = sband;
996 /* By default all radios are belonging to the first group */
999 /* Work to be done prior to ieee80211_register_hw() */
1001 case HWSIM_REGTEST_DISABLED:
1002 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1003 case HWSIM_REGTEST_DRIVER_REG_ALL:
1004 case HWSIM_REGTEST_DIFF_COUNTRY:
1006 * Nothing to be done for driver regulatory domain
1007 * hints prior to ieee80211_register_hw()
1010 case HWSIM_REGTEST_WORLD_ROAM:
1012 hw->wiphy->custom_regulatory = true;
1013 wiphy_apply_custom_regulatory(hw->wiphy,
1014 &hwsim_world_regdom_custom_01);
1017 case HWSIM_REGTEST_CUSTOM_WORLD:
1018 hw->wiphy->custom_regulatory = true;
1019 wiphy_apply_custom_regulatory(hw->wiphy,
1020 &hwsim_world_regdom_custom_01);
1022 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1024 hw->wiphy->custom_regulatory = true;
1025 wiphy_apply_custom_regulatory(hw->wiphy,
1026 &hwsim_world_regdom_custom_01);
1027 } else if (i == 1) {
1028 hw->wiphy->custom_regulatory = true;
1029 wiphy_apply_custom_regulatory(hw->wiphy,
1030 &hwsim_world_regdom_custom_02);
1033 case HWSIM_REGTEST_STRICT_ALL:
1034 hw->wiphy->strict_regulatory = true;
1036 case HWSIM_REGTEST_STRICT_FOLLOW:
1037 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1039 hw->wiphy->strict_regulatory = true;
1041 case HWSIM_REGTEST_ALL:
1043 hw->wiphy->custom_regulatory = true;
1044 wiphy_apply_custom_regulatory(hw->wiphy,
1045 &hwsim_world_regdom_custom_01);
1046 } else if (i == 1) {
1047 hw->wiphy->custom_regulatory = true;
1048 wiphy_apply_custom_regulatory(hw->wiphy,
1049 &hwsim_world_regdom_custom_02);
1051 hw->wiphy->strict_regulatory = true;
1057 /* give the regulatory workqueue a chance to run */
1059 schedule_timeout_interruptible(1);
1060 err = ieee80211_register_hw(hw);
1062 printk(KERN_DEBUG "mac80211_hwsim: "
1063 "ieee80211_register_hw failed (%d)\n", err);
1067 /* Work to be done after to ieee80211_register_hw() */
1069 case HWSIM_REGTEST_WORLD_ROAM:
1070 case HWSIM_REGTEST_DISABLED:
1072 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1074 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1076 case HWSIM_REGTEST_DRIVER_REG_ALL:
1077 case HWSIM_REGTEST_STRICT_ALL:
1078 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1080 case HWSIM_REGTEST_DIFF_COUNTRY:
1081 if (i < ARRAY_SIZE(hwsim_alpha2s))
1082 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1084 case HWSIM_REGTEST_CUSTOM_WORLD:
1085 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1087 * Nothing to be done for custom world regulatory
1088 * domains after to ieee80211_register_hw
1091 case HWSIM_REGTEST_STRICT_FOLLOW:
1093 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1095 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1097 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1099 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1101 case HWSIM_REGTEST_ALL:
1103 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1105 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1107 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1113 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1114 wiphy_name(hw->wiphy),
1115 hw->wiphy->perm_addr);
1117 data->debugfs = debugfs_create_dir("hwsim",
1118 hw->wiphy->debugfsdir);
1119 data->debugfs_ps = debugfs_create_file("ps", 0666,
1120 data->debugfs, data,
1122 data->debugfs_group = debugfs_create_file("group", 0666,
1123 data->debugfs, data,
1126 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1127 (unsigned long) hw);
1129 list_add_tail(&data->list, &hwsim_radios);
1132 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1133 if (hwsim_mon == NULL)
1138 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1143 err = register_netdevice(hwsim_mon);
1153 free_netdev(hwsim_mon);
1154 mac80211_hwsim_free();
1158 device_unregister(data->dev);
1160 ieee80211_free_hw(hw);
1162 mac80211_hwsim_free();
1167 static void __exit exit_mac80211_hwsim(void)
1169 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1171 unregister_netdev(hwsim_mon);
1172 mac80211_hwsim_free();
1176 module_init(init_mac80211_hwsim);
1177 module_exit(exit_mac80211_hwsim);