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>
20 #include <net/mac80211.h>
21 #include <net/ieee80211_radiotap.h>
22 #include <linux/if_arp.h>
23 #include <linux/rtnetlink.h>
24 #include <linux/etherdevice.h>
25 #include <linux/debugfs.h>
27 MODULE_AUTHOR("Jouni Malinen");
28 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
29 MODULE_LICENSE("GPL");
31 static int radios = 2;
32 module_param(radios, int, 0444);
33 MODULE_PARM_DESC(radios, "Number of simulated radios");
36 * enum hwsim_regtest - the type of regulatory tests we offer
38 * These are the different values you can use for the regtest
39 * module parameter. This is useful to help test world roaming
40 * and the driver regulatory_hint() call and combinations of these.
41 * If you want to do specific alpha2 regulatory domain tests simply
42 * use the userspace regulatory request as that will be respected as
43 * well without the need of this module parameter. This is designed
44 * only for testing the driver regulatory request, world roaming
45 * and all possible combinations.
47 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
48 * this is the default value.
49 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
50 * hint, only one driver regulatory hint will be sent as such the
51 * secondary radios are expected to follow.
52 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
53 * request with all radios reporting the same regulatory domain.
54 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
55 * different regulatory domains requests. Expected behaviour is for
56 * an intersection to occur but each device will still use their
57 * respective regulatory requested domains. Subsequent radios will
58 * use the resulting intersection.
59 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
60 * this by using a custom beacon-capable regulatory domain for the first
61 * radio. All other device world roam.
62 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
63 * domain requests. All radios will adhere to this custom world regulatory
65 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
66 * domain requests. The first radio will adhere to the first custom world
67 * regulatory domain, the second one to the second custom world regulatory
68 * domain. All other devices will world roam.
69 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
70 * settings, only the first radio will send a regulatory domain request
71 * and use strict settings. The rest of the radios are expected to follow.
72 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
73 * settings. All radios will adhere to this.
74 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
75 * domain settings, combined with secondary driver regulatory domain
76 * settings. The first radio will get a strict regulatory domain setting
77 * using the first driver regulatory request and the second radio will use
78 * non-strict settings using the second driver regulatory request. All
79 * other devices should follow the intersection created between the
81 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
82 * at least 6 radios for a complete test. We will test in this order:
83 * 1 - driver custom world regulatory domain
84 * 2 - second custom world regulatory domain
85 * 3 - first driver regulatory domain request
86 * 4 - second driver regulatory domain request
87 * 5 - strict regulatory domain settings using the third driver regulatory
89 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
90 * regulatory requests.
93 HWSIM_REGTEST_DISABLED = 0,
94 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
95 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
96 HWSIM_REGTEST_DIFF_COUNTRY = 3,
97 HWSIM_REGTEST_WORLD_ROAM = 4,
98 HWSIM_REGTEST_CUSTOM_WORLD = 5,
99 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
100 HWSIM_REGTEST_STRICT_FOLLOW = 7,
101 HWSIM_REGTEST_STRICT_ALL = 8,
102 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
103 HWSIM_REGTEST_ALL = 10,
106 /* Set to one of the HWSIM_REGTEST_* values above */
107 static int regtest = HWSIM_REGTEST_DISABLED;
108 module_param(regtest, int, 0444);
109 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
111 static const char *hwsim_alpha2s[] = {
120 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
124 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
125 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
126 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
127 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
131 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
135 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
136 REG_RULE(5725-10, 5850+10, 40, 0, 30,
137 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
141 struct hwsim_vif_priv {
148 #define HWSIM_VIF_MAGIC 0x69537748
150 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
152 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
153 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
156 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
158 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
159 vp->magic = HWSIM_VIF_MAGIC;
162 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
164 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
168 struct hwsim_sta_priv {
172 #define HWSIM_STA_MAGIC 0x6d537748
174 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
176 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
177 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
180 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
182 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
183 sp->magic = HWSIM_STA_MAGIC;
186 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
188 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
192 static struct class *hwsim_class;
194 static struct net_device *hwsim_mon; /* global monitor netdev */
196 #define CHAN2G(_freq) { \
197 .band = IEEE80211_BAND_2GHZ, \
198 .center_freq = (_freq), \
199 .hw_value = (_freq), \
203 #define CHAN5G(_freq) { \
204 .band = IEEE80211_BAND_5GHZ, \
205 .center_freq = (_freq), \
206 .hw_value = (_freq), \
210 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
211 CHAN2G(2412), /* Channel 1 */
212 CHAN2G(2417), /* Channel 2 */
213 CHAN2G(2422), /* Channel 3 */
214 CHAN2G(2427), /* Channel 4 */
215 CHAN2G(2432), /* Channel 5 */
216 CHAN2G(2437), /* Channel 6 */
217 CHAN2G(2442), /* Channel 7 */
218 CHAN2G(2447), /* Channel 8 */
219 CHAN2G(2452), /* Channel 9 */
220 CHAN2G(2457), /* Channel 10 */
221 CHAN2G(2462), /* Channel 11 */
222 CHAN2G(2467), /* Channel 12 */
223 CHAN2G(2472), /* Channel 13 */
224 CHAN2G(2484), /* Channel 14 */
227 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
228 CHAN5G(5180), /* Channel 36 */
229 CHAN5G(5200), /* Channel 40 */
230 CHAN5G(5220), /* Channel 44 */
231 CHAN5G(5240), /* Channel 48 */
233 CHAN5G(5260), /* Channel 52 */
234 CHAN5G(5280), /* Channel 56 */
235 CHAN5G(5300), /* Channel 60 */
236 CHAN5G(5320), /* Channel 64 */
238 CHAN5G(5500), /* Channel 100 */
239 CHAN5G(5520), /* Channel 104 */
240 CHAN5G(5540), /* Channel 108 */
241 CHAN5G(5560), /* Channel 112 */
242 CHAN5G(5580), /* Channel 116 */
243 CHAN5G(5600), /* Channel 120 */
244 CHAN5G(5620), /* Channel 124 */
245 CHAN5G(5640), /* Channel 128 */
246 CHAN5G(5660), /* Channel 132 */
247 CHAN5G(5680), /* Channel 136 */
248 CHAN5G(5700), /* Channel 140 */
250 CHAN5G(5745), /* Channel 149 */
251 CHAN5G(5765), /* Channel 153 */
252 CHAN5G(5785), /* Channel 157 */
253 CHAN5G(5805), /* Channel 161 */
254 CHAN5G(5825), /* Channel 165 */
257 static const struct ieee80211_rate hwsim_rates[] = {
259 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
260 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
261 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
272 static spinlock_t hwsim_radio_lock;
273 static struct list_head hwsim_radios;
275 struct mac80211_hwsim_data {
276 struct list_head list;
277 struct ieee80211_hw *hw;
279 struct ieee80211_supported_band bands[2];
280 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
281 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
282 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
284 struct ieee80211_channel *channel;
285 unsigned long beacon_int; /* in jiffies unit */
286 unsigned int rx_filter;
288 struct timer_list beacon_timer;
290 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
292 bool ps_poll_pending;
293 struct dentry *debugfs;
294 struct dentry *debugfs_ps;
297 * Only radios in the same group can communicate together (the
298 * channel has to match too). Each bit represents a group. A
299 * radio can be in more then one group.
302 struct dentry *debugfs_group;
306 struct hwsim_radiotap_hdr {
307 struct ieee80211_radiotap_header hdr;
312 } __attribute__ ((packed));
315 static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev)
317 /* TODO: allow packet injection */
323 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
324 struct sk_buff *tx_skb)
326 struct mac80211_hwsim_data *data = hw->priv;
328 struct hwsim_radiotap_hdr *hdr;
330 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
331 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
333 if (!netif_running(hwsim_mon))
336 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
340 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
341 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
343 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
344 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
345 (1 << IEEE80211_RADIOTAP_RATE) |
346 (1 << IEEE80211_RADIOTAP_CHANNEL));
348 hdr->rt_rate = txrate->bitrate / 5;
349 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
350 flags = IEEE80211_CHAN_2GHZ;
351 if (txrate->flags & IEEE80211_RATE_ERP_G)
352 flags |= IEEE80211_CHAN_OFDM;
354 flags |= IEEE80211_CHAN_CCK;
355 hdr->rt_chbitmask = cpu_to_le16(flags);
357 skb->dev = hwsim_mon;
358 skb_set_mac_header(skb, 0);
359 skb->ip_summed = CHECKSUM_UNNECESSARY;
360 skb->pkt_type = PACKET_OTHERHOST;
361 skb->protocol = htons(ETH_P_802_2);
362 memset(skb->cb, 0, sizeof(skb->cb));
367 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
376 /* TODO: accept (some) Beacons by default and other frames only
377 * if pending PS-Poll has been sent */
380 /* Allow unicast frames to own address if there is a pending
382 if (data->ps_poll_pending &&
383 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
385 data->ps_poll_pending = false;
395 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
398 struct mac80211_hwsim_data *data = hw->priv, *data2;
400 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
401 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
402 struct ieee80211_rx_status rx_status;
404 memset(&rx_status, 0, sizeof(rx_status));
405 /* TODO: set mactime */
406 rx_status.freq = data->channel->center_freq;
407 rx_status.band = data->channel->band;
408 rx_status.rate_idx = info->control.rates[0].idx;
409 /* TODO: simulate signal strength (and optional packet drop) */
411 if (data->ps != PS_DISABLED)
412 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
414 /* release the skb's source info */
421 /* Copy skb to all enabled radios that are on the current frequency */
422 spin_lock(&hwsim_radio_lock);
423 list_for_each_entry(data2, &hwsim_radios, list) {
424 struct sk_buff *nskb;
429 if (!data2->started || !hwsim_ps_rx_ok(data2, skb) ||
430 !data->channel || !data2->channel ||
431 data->channel->center_freq != data2->channel->center_freq ||
432 !(data->group & data2->group))
435 nskb = skb_copy(skb, GFP_ATOMIC);
439 if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr,
442 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
443 ieee80211_rx_irqsafe(data2->hw, nskb);
445 spin_unlock(&hwsim_radio_lock);
451 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
454 struct ieee80211_tx_info *txi;
456 mac80211_hwsim_monitor_rx(hw, skb);
459 /* Should not happen; just a sanity check for addr1 use */
464 ack = mac80211_hwsim_tx_frame(hw, skb);
466 txi = IEEE80211_SKB_CB(skb);
468 if (txi->control.vif)
469 hwsim_check_magic(txi->control.vif);
470 if (txi->control.sta)
471 hwsim_check_sta_magic(txi->control.sta);
473 ieee80211_tx_info_clear_status(txi);
474 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
475 txi->flags |= IEEE80211_TX_STAT_ACK;
476 ieee80211_tx_status_irqsafe(hw, skb);
481 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
483 struct mac80211_hwsim_data *data = hw->priv;
484 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
490 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
492 struct mac80211_hwsim_data *data = hw->priv;
494 del_timer(&data->beacon_timer);
495 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
499 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
500 struct ieee80211_if_init_conf *conf)
502 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
503 wiphy_name(hw->wiphy), __func__, conf->type,
505 hwsim_set_magic(conf->vif);
510 static void mac80211_hwsim_remove_interface(
511 struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
513 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
514 wiphy_name(hw->wiphy), __func__, conf->type,
516 hwsim_check_magic(conf->vif);
517 hwsim_clear_magic(conf->vif);
521 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
522 struct ieee80211_vif *vif)
524 struct ieee80211_hw *hw = arg;
526 struct ieee80211_tx_info *info;
528 hwsim_check_magic(vif);
530 if (vif->type != NL80211_IFTYPE_AP &&
531 vif->type != NL80211_IFTYPE_MESH_POINT)
534 skb = ieee80211_beacon_get(hw, vif);
537 info = IEEE80211_SKB_CB(skb);
539 mac80211_hwsim_monitor_rx(hw, skb);
540 mac80211_hwsim_tx_frame(hw, skb);
545 static void mac80211_hwsim_beacon(unsigned long arg)
547 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
548 struct mac80211_hwsim_data *data = hw->priv;
553 ieee80211_iterate_active_interfaces_atomic(
554 hw, mac80211_hwsim_beacon_tx, hw);
556 data->beacon_timer.expires = jiffies + data->beacon_int;
557 add_timer(&data->beacon_timer);
561 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
563 struct mac80211_hwsim_data *data = hw->priv;
564 struct ieee80211_conf *conf = &hw->conf;
566 printk(KERN_DEBUG "%s:%s (freq=%d idle=%d ps=%d)\n",
567 wiphy_name(hw->wiphy), __func__,
568 conf->channel->center_freq,
569 !!(conf->flags & IEEE80211_CONF_IDLE),
570 !!(conf->flags & IEEE80211_CONF_PS));
572 data->channel = conf->channel;
573 if (!data->started || !data->beacon_int)
574 del_timer(&data->beacon_timer);
576 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
582 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
583 unsigned int changed_flags,
584 unsigned int *total_flags,
586 struct dev_addr_list *mc_list)
588 struct mac80211_hwsim_data *data = hw->priv;
590 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
593 if (*total_flags & FIF_PROMISC_IN_BSS)
594 data->rx_filter |= FIF_PROMISC_IN_BSS;
595 if (*total_flags & FIF_ALLMULTI)
596 data->rx_filter |= FIF_ALLMULTI;
598 *total_flags = data->rx_filter;
601 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
602 struct ieee80211_vif *vif,
603 struct ieee80211_bss_conf *info,
606 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
607 struct mac80211_hwsim_data *data = hw->priv;
609 hwsim_check_magic(vif);
611 printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
612 wiphy_name(hw->wiphy), __func__, changed);
614 if (changed & BSS_CHANGED_BSSID) {
615 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
616 wiphy_name(hw->wiphy), __func__,
618 memcpy(vp->bssid, info->bssid, ETH_ALEN);
621 if (changed & BSS_CHANGED_ASSOC) {
622 printk(KERN_DEBUG " %s: ASSOC: assoc=%d aid=%d\n",
623 wiphy_name(hw->wiphy), info->assoc, info->aid);
624 vp->assoc = info->assoc;
628 if (changed & BSS_CHANGED_BEACON_INT) {
629 printk(KERN_DEBUG " %s: BCNINT: %d\n",
630 wiphy_name(hw->wiphy), info->beacon_int);
631 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
632 if (WARN_ON(!data->beacon_int))
633 data->beacon_int = 1;
636 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
637 printk(KERN_DEBUG " %s: ERP_CTS_PROT: %d\n",
638 wiphy_name(hw->wiphy), info->use_cts_prot);
641 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
642 printk(KERN_DEBUG " %s: ERP_PREAMBLE: %d\n",
643 wiphy_name(hw->wiphy), info->use_short_preamble);
646 if (changed & BSS_CHANGED_ERP_SLOT) {
647 printk(KERN_DEBUG " %s: ERP_SLOT: %d\n",
648 wiphy_name(hw->wiphy), info->use_short_slot);
651 if (changed & BSS_CHANGED_HT) {
652 printk(KERN_DEBUG " %s: HT: op_mode=0x%x\n",
653 wiphy_name(hw->wiphy),
654 info->ht_operation_mode);
657 if (changed & BSS_CHANGED_BASIC_RATES) {
658 printk(KERN_DEBUG " %s: BASIC_RATES: 0x%llx\n",
659 wiphy_name(hw->wiphy),
660 (unsigned long long) info->basic_rates);
664 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
665 struct ieee80211_vif *vif,
666 enum sta_notify_cmd cmd,
667 struct ieee80211_sta *sta)
669 hwsim_check_magic(vif);
672 hwsim_set_sta_magic(sta);
674 case STA_NOTIFY_REMOVE:
675 hwsim_clear_sta_magic(sta);
677 case STA_NOTIFY_SLEEP:
678 case STA_NOTIFY_AWAKE:
679 /* TODO: make good use of these flags */
684 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
685 struct ieee80211_sta *sta,
688 hwsim_check_sta_magic(sta);
692 static int mac80211_hwsim_conf_tx(
693 struct ieee80211_hw *hw, u16 queue,
694 const struct ieee80211_tx_queue_params *params)
696 printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
698 wiphy_name(hw->wiphy), __func__, queue,
699 params->txop, params->cw_min, params->cw_max, params->aifs);
703 static const struct ieee80211_ops mac80211_hwsim_ops =
705 .tx = mac80211_hwsim_tx,
706 .start = mac80211_hwsim_start,
707 .stop = mac80211_hwsim_stop,
708 .add_interface = mac80211_hwsim_add_interface,
709 .remove_interface = mac80211_hwsim_remove_interface,
710 .config = mac80211_hwsim_config,
711 .configure_filter = mac80211_hwsim_configure_filter,
712 .bss_info_changed = mac80211_hwsim_bss_info_changed,
713 .sta_notify = mac80211_hwsim_sta_notify,
714 .set_tim = mac80211_hwsim_set_tim,
715 .conf_tx = mac80211_hwsim_conf_tx,
719 static void mac80211_hwsim_free(void)
721 struct list_head tmplist, *i, *tmp;
722 struct mac80211_hwsim_data *data;
724 INIT_LIST_HEAD(&tmplist);
726 spin_lock_bh(&hwsim_radio_lock);
727 list_for_each_safe(i, tmp, &hwsim_radios)
728 list_move(i, &tmplist);
729 spin_unlock_bh(&hwsim_radio_lock);
731 list_for_each_entry(data, &tmplist, list) {
732 debugfs_remove(data->debugfs_group);
733 debugfs_remove(data->debugfs_ps);
734 debugfs_remove(data->debugfs);
735 ieee80211_unregister_hw(data->hw);
736 device_unregister(data->dev);
737 ieee80211_free_hw(data->hw);
739 class_destroy(hwsim_class);
743 static struct device_driver mac80211_hwsim_driver = {
744 .name = "mac80211_hwsim"
747 static const struct net_device_ops hwsim_netdev_ops = {
748 .ndo_start_xmit = hwsim_mon_xmit,
749 .ndo_change_mtu = eth_change_mtu,
750 .ndo_set_mac_address = eth_mac_addr,
751 .ndo_validate_addr = eth_validate_addr,
754 static void hwsim_mon_setup(struct net_device *dev)
756 dev->netdev_ops = &hwsim_netdev_ops;
757 dev->destructor = free_netdev;
759 dev->tx_queue_len = 0;
760 dev->type = ARPHRD_IEEE80211_RADIOTAP;
761 memset(dev->dev_addr, 0, ETH_ALEN);
762 dev->dev_addr[0] = 0x12;
766 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
768 struct mac80211_hwsim_data *data = dat;
769 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
770 DECLARE_MAC_BUF(buf);
772 struct ieee80211_pspoll *pspoll;
777 printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
778 wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
780 skb = dev_alloc_skb(sizeof(*pspoll));
783 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
784 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
785 IEEE80211_STYPE_PSPOLL |
787 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
788 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
789 memcpy(pspoll->ta, mac, ETH_ALEN);
790 if (!mac80211_hwsim_tx_frame(data->hw, skb))
791 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
796 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
797 struct ieee80211_vif *vif, int ps)
799 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
800 DECLARE_MAC_BUF(buf);
802 struct ieee80211_hdr *hdr;
807 printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
808 wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
810 skb = dev_alloc_skb(sizeof(*hdr));
813 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
814 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
815 IEEE80211_STYPE_NULLFUNC |
816 (ps ? IEEE80211_FCTL_PM : 0));
817 hdr->duration_id = cpu_to_le16(0);
818 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
819 memcpy(hdr->addr2, mac, ETH_ALEN);
820 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
821 if (!mac80211_hwsim_tx_frame(data->hw, skb))
822 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
827 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
828 struct ieee80211_vif *vif)
830 struct mac80211_hwsim_data *data = dat;
831 hwsim_send_nullfunc(data, mac, vif, 1);
835 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
836 struct ieee80211_vif *vif)
838 struct mac80211_hwsim_data *data = dat;
839 hwsim_send_nullfunc(data, mac, vif, 0);
843 static int hwsim_fops_ps_read(void *dat, u64 *val)
845 struct mac80211_hwsim_data *data = dat;
850 static int hwsim_fops_ps_write(void *dat, u64 val)
852 struct mac80211_hwsim_data *data = dat;
855 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
856 val != PS_MANUAL_POLL)
862 if (val == PS_MANUAL_POLL) {
863 ieee80211_iterate_active_interfaces(data->hw,
864 hwsim_send_ps_poll, data);
865 data->ps_poll_pending = true;
866 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
867 ieee80211_iterate_active_interfaces(data->hw,
868 hwsim_send_nullfunc_ps,
870 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
871 ieee80211_iterate_active_interfaces(data->hw,
872 hwsim_send_nullfunc_no_ps,
879 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
883 static int hwsim_fops_group_read(void *dat, u64 *val)
885 struct mac80211_hwsim_data *data = dat;
890 static int hwsim_fops_group_write(void *dat, u64 val)
892 struct mac80211_hwsim_data *data = dat;
897 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
898 hwsim_fops_group_read, hwsim_fops_group_write,
901 static int __init init_mac80211_hwsim(void)
905 struct mac80211_hwsim_data *data;
906 struct ieee80211_hw *hw;
907 enum ieee80211_band band;
909 if (radios < 1 || radios > 100)
912 spin_lock_init(&hwsim_radio_lock);
913 INIT_LIST_HEAD(&hwsim_radios);
915 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
916 if (IS_ERR(hwsim_class))
917 return PTR_ERR(hwsim_class);
919 memset(addr, 0, ETH_ALEN);
922 for (i = 0; i < radios; i++) {
923 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
925 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
927 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
935 data->dev = device_create(hwsim_class, NULL, 0, hw,
937 if (IS_ERR(data->dev)) {
939 "mac80211_hwsim: device_create "
940 "failed (%ld)\n", PTR_ERR(data->dev));
944 data->dev->driver = &mac80211_hwsim_driver;
946 SET_IEEE80211_DEV(hw, data->dev);
949 SET_IEEE80211_PERM_ADDR(hw, addr);
951 hw->channel_change_time = 1;
953 hw->wiphy->interface_modes =
954 BIT(NL80211_IFTYPE_STATION) |
955 BIT(NL80211_IFTYPE_AP) |
956 BIT(NL80211_IFTYPE_MESH_POINT);
958 hw->flags = IEEE80211_HW_MFP_CAPABLE;
960 /* ask mac80211 to reserve space for magic */
961 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
962 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
964 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
965 sizeof(hwsim_channels_2ghz));
966 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
967 sizeof(hwsim_channels_5ghz));
968 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
970 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
971 struct ieee80211_supported_band *sband = &data->bands[band];
973 case IEEE80211_BAND_2GHZ:
974 sband->channels = data->channels_2ghz;
976 ARRAY_SIZE(hwsim_channels_2ghz);
978 case IEEE80211_BAND_5GHZ:
979 sband->channels = data->channels_5ghz;
981 ARRAY_SIZE(hwsim_channels_5ghz);
987 sband->bitrates = data->rates;
988 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
990 sband->ht_cap.ht_supported = true;
991 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
992 IEEE80211_HT_CAP_GRN_FLD |
993 IEEE80211_HT_CAP_SGI_40 |
994 IEEE80211_HT_CAP_DSSSCCK40;
995 sband->ht_cap.ampdu_factor = 0x3;
996 sband->ht_cap.ampdu_density = 0x6;
997 memset(&sband->ht_cap.mcs, 0,
998 sizeof(sband->ht_cap.mcs));
999 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1000 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1001 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1003 hw->wiphy->bands[band] = sband;
1005 /* By default all radios are belonging to the first group */
1008 /* Work to be done prior to ieee80211_register_hw() */
1010 case HWSIM_REGTEST_DISABLED:
1011 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1012 case HWSIM_REGTEST_DRIVER_REG_ALL:
1013 case HWSIM_REGTEST_DIFF_COUNTRY:
1015 * Nothing to be done for driver regulatory domain
1016 * hints prior to ieee80211_register_hw()
1019 case HWSIM_REGTEST_WORLD_ROAM:
1021 hw->wiphy->custom_regulatory = true;
1022 wiphy_apply_custom_regulatory(hw->wiphy,
1023 &hwsim_world_regdom_custom_01);
1026 case HWSIM_REGTEST_CUSTOM_WORLD:
1027 hw->wiphy->custom_regulatory = true;
1028 wiphy_apply_custom_regulatory(hw->wiphy,
1029 &hwsim_world_regdom_custom_01);
1031 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1033 hw->wiphy->custom_regulatory = true;
1034 wiphy_apply_custom_regulatory(hw->wiphy,
1035 &hwsim_world_regdom_custom_01);
1036 } else if (i == 1) {
1037 hw->wiphy->custom_regulatory = true;
1038 wiphy_apply_custom_regulatory(hw->wiphy,
1039 &hwsim_world_regdom_custom_02);
1042 case HWSIM_REGTEST_STRICT_ALL:
1043 hw->wiphy->strict_regulatory = true;
1045 case HWSIM_REGTEST_STRICT_FOLLOW:
1046 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1048 hw->wiphy->strict_regulatory = true;
1050 case HWSIM_REGTEST_ALL:
1052 hw->wiphy->custom_regulatory = true;
1053 wiphy_apply_custom_regulatory(hw->wiphy,
1054 &hwsim_world_regdom_custom_01);
1055 } else if (i == 1) {
1056 hw->wiphy->custom_regulatory = true;
1057 wiphy_apply_custom_regulatory(hw->wiphy,
1058 &hwsim_world_regdom_custom_02);
1060 hw->wiphy->strict_regulatory = true;
1066 /* give the regulatory workqueue a chance to run */
1068 schedule_timeout_interruptible(1);
1069 err = ieee80211_register_hw(hw);
1071 printk(KERN_DEBUG "mac80211_hwsim: "
1072 "ieee80211_register_hw failed (%d)\n", err);
1076 /* Work to be done after to ieee80211_register_hw() */
1078 case HWSIM_REGTEST_WORLD_ROAM:
1079 case HWSIM_REGTEST_DISABLED:
1081 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1083 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1085 case HWSIM_REGTEST_DRIVER_REG_ALL:
1086 case HWSIM_REGTEST_STRICT_ALL:
1087 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1089 case HWSIM_REGTEST_DIFF_COUNTRY:
1090 if (i < ARRAY_SIZE(hwsim_alpha2s))
1091 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1093 case HWSIM_REGTEST_CUSTOM_WORLD:
1094 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1096 * Nothing to be done for custom world regulatory
1097 * domains after to ieee80211_register_hw
1100 case HWSIM_REGTEST_STRICT_FOLLOW:
1102 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1104 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1106 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1108 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1110 case HWSIM_REGTEST_ALL:
1112 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1114 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1116 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1122 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1123 wiphy_name(hw->wiphy),
1124 hw->wiphy->perm_addr);
1126 data->debugfs = debugfs_create_dir("hwsim",
1127 hw->wiphy->debugfsdir);
1128 data->debugfs_ps = debugfs_create_file("ps", 0666,
1129 data->debugfs, data,
1131 data->debugfs_group = debugfs_create_file("group", 0666,
1132 data->debugfs, data,
1135 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1136 (unsigned long) hw);
1138 list_add_tail(&data->list, &hwsim_radios);
1141 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1142 if (hwsim_mon == NULL)
1147 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1152 err = register_netdevice(hwsim_mon);
1162 free_netdev(hwsim_mon);
1163 mac80211_hwsim_free();
1167 device_unregister(data->dev);
1169 ieee80211_free_hw(hw);
1171 mac80211_hwsim_free();
1176 static void __exit exit_mac80211_hwsim(void)
1178 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1180 unregister_netdev(hwsim_mon);
1181 mac80211_hwsim_free();
1185 module_init(init_mac80211_hwsim);
1186 module_exit(exit_mac80211_hwsim);