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 mac_address addresses[2];
286 struct ieee80211_channel *channel;
287 unsigned long beacon_int; /* in jiffies unit */
288 unsigned int rx_filter;
290 struct timer_list beacon_timer;
292 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
294 bool ps_poll_pending;
295 struct dentry *debugfs;
296 struct dentry *debugfs_ps;
299 * Only radios in the same group can communicate together (the
300 * channel has to match too). Each bit represents a group. A
301 * radio can be in more then one group.
304 struct dentry *debugfs_group;
308 struct hwsim_radiotap_hdr {
309 struct ieee80211_radiotap_header hdr;
314 } __attribute__ ((packed));
317 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
318 struct net_device *dev)
320 /* TODO: allow packet injection */
326 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
327 struct sk_buff *tx_skb)
329 struct mac80211_hwsim_data *data = hw->priv;
331 struct hwsim_radiotap_hdr *hdr;
333 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
334 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
336 if (!netif_running(hwsim_mon))
339 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
343 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
344 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
346 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
347 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
348 (1 << IEEE80211_RADIOTAP_RATE) |
349 (1 << IEEE80211_RADIOTAP_CHANNEL));
351 hdr->rt_rate = txrate->bitrate / 5;
352 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
353 flags = IEEE80211_CHAN_2GHZ;
354 if (txrate->flags & IEEE80211_RATE_ERP_G)
355 flags |= IEEE80211_CHAN_OFDM;
357 flags |= IEEE80211_CHAN_CCK;
358 hdr->rt_chbitmask = cpu_to_le16(flags);
360 skb->dev = hwsim_mon;
361 skb_set_mac_header(skb, 0);
362 skb->ip_summed = CHECKSUM_UNNECESSARY;
363 skb->pkt_type = PACKET_OTHERHOST;
364 skb->protocol = htons(ETH_P_802_2);
365 memset(skb->cb, 0, sizeof(skb->cb));
370 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
372 struct mac80211_hwsim_data *data = hw->priv;
374 struct hwsim_radiotap_hdr *hdr;
376 struct ieee80211_hdr *hdr11;
378 if (!netif_running(hwsim_mon))
381 skb = dev_alloc_skb(100);
385 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
386 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
388 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
389 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
390 (1 << IEEE80211_RADIOTAP_CHANNEL));
393 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
394 flags = IEEE80211_CHAN_2GHZ;
395 hdr->rt_chbitmask = cpu_to_le16(flags);
397 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
398 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
399 IEEE80211_STYPE_ACK);
400 hdr11->duration_id = cpu_to_le16(0);
401 memcpy(hdr11->addr1, addr, ETH_ALEN);
403 skb->dev = hwsim_mon;
404 skb_set_mac_header(skb, 0);
405 skb->ip_summed = CHECKSUM_UNNECESSARY;
406 skb->pkt_type = PACKET_OTHERHOST;
407 skb->protocol = htons(ETH_P_802_2);
408 memset(skb->cb, 0, sizeof(skb->cb));
413 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
422 /* TODO: accept (some) Beacons by default and other frames only
423 * if pending PS-Poll has been sent */
426 /* Allow unicast frames to own address if there is a pending
428 if (data->ps_poll_pending &&
429 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
431 data->ps_poll_pending = false;
441 struct mac80211_hwsim_addr_match_data {
446 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
447 struct ieee80211_vif *vif)
449 struct mac80211_hwsim_addr_match_data *md = data;
450 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
455 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
458 struct mac80211_hwsim_addr_match_data md;
460 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
465 ieee80211_iterate_active_interfaces_atomic(data->hw,
466 mac80211_hwsim_addr_iter,
473 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
476 struct mac80211_hwsim_data *data = hw->priv, *data2;
478 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
479 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
480 struct ieee80211_rx_status rx_status;
483 printk(KERN_DEBUG "%s: Trying to TX when idle - reject\n",
484 wiphy_name(hw->wiphy));
488 memset(&rx_status, 0, sizeof(rx_status));
489 /* TODO: set mactime */
490 rx_status.freq = data->channel->center_freq;
491 rx_status.band = data->channel->band;
492 rx_status.rate_idx = info->control.rates[0].idx;
493 /* TODO: simulate real signal strength (and optional packet loss) */
494 rx_status.signal = -50;
496 if (data->ps != PS_DISABLED)
497 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
499 /* release the skb's source info */
506 /* Copy skb to all enabled radios that are on the current frequency */
507 spin_lock(&hwsim_radio_lock);
508 list_for_each_entry(data2, &hwsim_radios, list) {
509 struct sk_buff *nskb;
514 if (data2->idle || !data2->started ||
515 !hwsim_ps_rx_ok(data2, skb) ||
516 !data->channel || !data2->channel ||
517 data->channel->center_freq != data2->channel->center_freq ||
518 !(data->group & data2->group))
521 nskb = skb_copy(skb, GFP_ATOMIC);
525 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
527 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
528 ieee80211_rx_irqsafe(data2->hw, nskb);
530 spin_unlock(&hwsim_radio_lock);
536 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
539 struct ieee80211_tx_info *txi;
541 mac80211_hwsim_monitor_rx(hw, skb);
544 /* Should not happen; just a sanity check for addr1 use */
549 ack = mac80211_hwsim_tx_frame(hw, skb);
550 if (ack && skb->len >= 16) {
551 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
552 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
555 txi = IEEE80211_SKB_CB(skb);
557 if (txi->control.vif)
558 hwsim_check_magic(txi->control.vif);
559 if (txi->control.sta)
560 hwsim_check_sta_magic(txi->control.sta);
562 ieee80211_tx_info_clear_status(txi);
563 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
564 txi->flags |= IEEE80211_TX_STAT_ACK;
565 ieee80211_tx_status_irqsafe(hw, skb);
570 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
572 struct mac80211_hwsim_data *data = hw->priv;
573 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
579 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
581 struct mac80211_hwsim_data *data = hw->priv;
583 del_timer(&data->beacon_timer);
584 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
588 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
589 struct ieee80211_vif *vif)
591 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
592 wiphy_name(hw->wiphy), __func__, vif->type,
594 hwsim_set_magic(vif);
599 static void mac80211_hwsim_remove_interface(
600 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
602 printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
603 wiphy_name(hw->wiphy), __func__, vif->type,
605 hwsim_check_magic(vif);
606 hwsim_clear_magic(vif);
610 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
611 struct ieee80211_vif *vif)
613 struct ieee80211_hw *hw = arg;
615 struct ieee80211_tx_info *info;
617 hwsim_check_magic(vif);
619 if (vif->type != NL80211_IFTYPE_AP &&
620 vif->type != NL80211_IFTYPE_MESH_POINT)
623 skb = ieee80211_beacon_get(hw, vif);
626 info = IEEE80211_SKB_CB(skb);
628 mac80211_hwsim_monitor_rx(hw, skb);
629 mac80211_hwsim_tx_frame(hw, skb);
634 static void mac80211_hwsim_beacon(unsigned long arg)
636 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
637 struct mac80211_hwsim_data *data = hw->priv;
642 ieee80211_iterate_active_interfaces_atomic(
643 hw, mac80211_hwsim_beacon_tx, hw);
645 data->beacon_timer.expires = jiffies + data->beacon_int;
646 add_timer(&data->beacon_timer);
650 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
652 struct mac80211_hwsim_data *data = hw->priv;
653 struct ieee80211_conf *conf = &hw->conf;
654 static const char *chantypes[4] = {
655 [NL80211_CHAN_NO_HT] = "noht",
656 [NL80211_CHAN_HT20] = "ht20",
657 [NL80211_CHAN_HT40MINUS] = "ht40-",
658 [NL80211_CHAN_HT40PLUS] = "ht40+",
660 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
661 [IEEE80211_SMPS_AUTOMATIC] = "auto",
662 [IEEE80211_SMPS_OFF] = "off",
663 [IEEE80211_SMPS_STATIC] = "static",
664 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
667 printk(KERN_DEBUG "%s:%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
668 wiphy_name(hw->wiphy), __func__,
669 conf->channel->center_freq,
670 chantypes[conf->channel_type],
671 !!(conf->flags & IEEE80211_CONF_IDLE),
672 !!(conf->flags & IEEE80211_CONF_PS),
673 smps_modes[conf->smps_mode]);
675 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
677 data->channel = conf->channel;
678 if (!data->started || !data->beacon_int)
679 del_timer(&data->beacon_timer);
681 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
687 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
688 unsigned int changed_flags,
689 unsigned int *total_flags,u64 multicast)
691 struct mac80211_hwsim_data *data = hw->priv;
693 printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
696 if (*total_flags & FIF_PROMISC_IN_BSS)
697 data->rx_filter |= FIF_PROMISC_IN_BSS;
698 if (*total_flags & FIF_ALLMULTI)
699 data->rx_filter |= FIF_ALLMULTI;
701 *total_flags = data->rx_filter;
704 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
705 struct ieee80211_vif *vif,
706 struct ieee80211_bss_conf *info,
709 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
710 struct mac80211_hwsim_data *data = hw->priv;
712 hwsim_check_magic(vif);
714 printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
715 wiphy_name(hw->wiphy), __func__, changed);
717 if (changed & BSS_CHANGED_BSSID) {
718 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
719 wiphy_name(hw->wiphy), __func__,
721 memcpy(vp->bssid, info->bssid, ETH_ALEN);
724 if (changed & BSS_CHANGED_ASSOC) {
725 printk(KERN_DEBUG " %s: ASSOC: assoc=%d aid=%d\n",
726 wiphy_name(hw->wiphy), info->assoc, info->aid);
727 vp->assoc = info->assoc;
731 if (changed & BSS_CHANGED_BEACON_INT) {
732 printk(KERN_DEBUG " %s: BCNINT: %d\n",
733 wiphy_name(hw->wiphy), info->beacon_int);
734 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
735 if (WARN_ON(!data->beacon_int))
736 data->beacon_int = 1;
738 mod_timer(&data->beacon_timer,
739 jiffies + data->beacon_int);
742 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
743 printk(KERN_DEBUG " %s: ERP_CTS_PROT: %d\n",
744 wiphy_name(hw->wiphy), info->use_cts_prot);
747 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
748 printk(KERN_DEBUG " %s: ERP_PREAMBLE: %d\n",
749 wiphy_name(hw->wiphy), info->use_short_preamble);
752 if (changed & BSS_CHANGED_ERP_SLOT) {
753 printk(KERN_DEBUG " %s: ERP_SLOT: %d\n",
754 wiphy_name(hw->wiphy), info->use_short_slot);
757 if (changed & BSS_CHANGED_HT) {
758 printk(KERN_DEBUG " %s: HT: op_mode=0x%x\n",
759 wiphy_name(hw->wiphy),
760 info->ht_operation_mode);
763 if (changed & BSS_CHANGED_BASIC_RATES) {
764 printk(KERN_DEBUG " %s: BASIC_RATES: 0x%llx\n",
765 wiphy_name(hw->wiphy),
766 (unsigned long long) info->basic_rates);
770 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
771 struct ieee80211_vif *vif,
772 enum sta_notify_cmd cmd,
773 struct ieee80211_sta *sta)
775 hwsim_check_magic(vif);
778 hwsim_set_sta_magic(sta);
780 case STA_NOTIFY_REMOVE:
781 hwsim_clear_sta_magic(sta);
783 case STA_NOTIFY_SLEEP:
784 case STA_NOTIFY_AWAKE:
785 /* TODO: make good use of these flags */
790 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
791 struct ieee80211_sta *sta,
794 hwsim_check_sta_magic(sta);
798 static int mac80211_hwsim_conf_tx(
799 struct ieee80211_hw *hw, u16 queue,
800 const struct ieee80211_tx_queue_params *params)
802 printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
804 wiphy_name(hw->wiphy), __func__, queue,
805 params->txop, params->cw_min, params->cw_max, params->aifs);
809 #ifdef CONFIG_NL80211_TESTMODE
811 * This section contains example code for using netlink
812 * attributes with the testmode command in nl80211.
815 /* These enums need to be kept in sync with userspace */
816 enum hwsim_testmode_attr {
817 __HWSIM_TM_ATTR_INVALID = 0,
818 HWSIM_TM_ATTR_CMD = 1,
819 HWSIM_TM_ATTR_PS = 2,
822 __HWSIM_TM_ATTR_AFTER_LAST,
823 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
826 enum hwsim_testmode_cmd {
827 HWSIM_TM_CMD_SET_PS = 0,
828 HWSIM_TM_CMD_GET_PS = 1,
831 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
832 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
833 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
836 static int hwsim_fops_ps_write(void *dat, u64 val);
838 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
841 struct mac80211_hwsim_data *hwsim = hw->priv;
842 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
846 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
847 hwsim_testmode_policy);
851 if (!tb[HWSIM_TM_ATTR_CMD])
854 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
855 case HWSIM_TM_CMD_SET_PS:
856 if (!tb[HWSIM_TM_ATTR_PS])
858 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
859 return hwsim_fops_ps_write(hwsim, ps);
860 case HWSIM_TM_CMD_GET_PS:
861 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
862 nla_total_size(sizeof(u32)));
865 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
866 return cfg80211_testmode_reply(skb);
877 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
878 struct ieee80211_vif *vif,
879 enum ieee80211_ampdu_mlme_action action,
880 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
883 case IEEE80211_AMPDU_TX_START:
884 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
886 case IEEE80211_AMPDU_TX_STOP:
887 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
889 case IEEE80211_AMPDU_TX_OPERATIONAL:
891 case IEEE80211_AMPDU_RX_START:
892 case IEEE80211_AMPDU_RX_STOP:
901 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
904 * In this special case, there's nothing we need to
905 * do because hwsim does transmission synchronously.
906 * In the future, when it does transmissions via
907 * userspace, we may need to do something.
912 static const struct ieee80211_ops mac80211_hwsim_ops =
914 .tx = mac80211_hwsim_tx,
915 .start = mac80211_hwsim_start,
916 .stop = mac80211_hwsim_stop,
917 .add_interface = mac80211_hwsim_add_interface,
918 .remove_interface = mac80211_hwsim_remove_interface,
919 .config = mac80211_hwsim_config,
920 .configure_filter = mac80211_hwsim_configure_filter,
921 .bss_info_changed = mac80211_hwsim_bss_info_changed,
922 .sta_notify = mac80211_hwsim_sta_notify,
923 .set_tim = mac80211_hwsim_set_tim,
924 .conf_tx = mac80211_hwsim_conf_tx,
925 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
926 .ampdu_action = mac80211_hwsim_ampdu_action,
927 .flush = mac80211_hwsim_flush,
931 static void mac80211_hwsim_free(void)
933 struct list_head tmplist, *i, *tmp;
934 struct mac80211_hwsim_data *data, *tmpdata;
936 INIT_LIST_HEAD(&tmplist);
938 spin_lock_bh(&hwsim_radio_lock);
939 list_for_each_safe(i, tmp, &hwsim_radios)
940 list_move(i, &tmplist);
941 spin_unlock_bh(&hwsim_radio_lock);
943 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
944 debugfs_remove(data->debugfs_group);
945 debugfs_remove(data->debugfs_ps);
946 debugfs_remove(data->debugfs);
947 ieee80211_unregister_hw(data->hw);
948 device_unregister(data->dev);
949 ieee80211_free_hw(data->hw);
951 class_destroy(hwsim_class);
955 static struct device_driver mac80211_hwsim_driver = {
956 .name = "mac80211_hwsim"
959 static const struct net_device_ops hwsim_netdev_ops = {
960 .ndo_start_xmit = hwsim_mon_xmit,
961 .ndo_change_mtu = eth_change_mtu,
962 .ndo_set_mac_address = eth_mac_addr,
963 .ndo_validate_addr = eth_validate_addr,
966 static void hwsim_mon_setup(struct net_device *dev)
968 dev->netdev_ops = &hwsim_netdev_ops;
969 dev->destructor = free_netdev;
971 dev->tx_queue_len = 0;
972 dev->type = ARPHRD_IEEE80211_RADIOTAP;
973 memset(dev->dev_addr, 0, ETH_ALEN);
974 dev->dev_addr[0] = 0x12;
978 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
980 struct mac80211_hwsim_data *data = dat;
981 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
983 struct ieee80211_pspoll *pspoll;
988 printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
989 wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
991 skb = dev_alloc_skb(sizeof(*pspoll));
994 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
995 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
996 IEEE80211_STYPE_PSPOLL |
998 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
999 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1000 memcpy(pspoll->ta, mac, ETH_ALEN);
1001 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1002 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1007 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1008 struct ieee80211_vif *vif, int ps)
1010 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1011 struct sk_buff *skb;
1012 struct ieee80211_hdr *hdr;
1017 printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
1018 wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
1020 skb = dev_alloc_skb(sizeof(*hdr));
1023 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1024 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1025 IEEE80211_STYPE_NULLFUNC |
1026 (ps ? IEEE80211_FCTL_PM : 0));
1027 hdr->duration_id = cpu_to_le16(0);
1028 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1029 memcpy(hdr->addr2, mac, ETH_ALEN);
1030 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1031 if (!mac80211_hwsim_tx_frame(data->hw, skb))
1032 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1037 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1038 struct ieee80211_vif *vif)
1040 struct mac80211_hwsim_data *data = dat;
1041 hwsim_send_nullfunc(data, mac, vif, 1);
1045 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1046 struct ieee80211_vif *vif)
1048 struct mac80211_hwsim_data *data = dat;
1049 hwsim_send_nullfunc(data, mac, vif, 0);
1053 static int hwsim_fops_ps_read(void *dat, u64 *val)
1055 struct mac80211_hwsim_data *data = dat;
1060 static int hwsim_fops_ps_write(void *dat, u64 val)
1062 struct mac80211_hwsim_data *data = dat;
1063 enum ps_mode old_ps;
1065 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1066 val != PS_MANUAL_POLL)
1072 if (val == PS_MANUAL_POLL) {
1073 ieee80211_iterate_active_interfaces(data->hw,
1074 hwsim_send_ps_poll, data);
1075 data->ps_poll_pending = true;
1076 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1077 ieee80211_iterate_active_interfaces(data->hw,
1078 hwsim_send_nullfunc_ps,
1080 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1081 ieee80211_iterate_active_interfaces(data->hw,
1082 hwsim_send_nullfunc_no_ps,
1089 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1093 static int hwsim_fops_group_read(void *dat, u64 *val)
1095 struct mac80211_hwsim_data *data = dat;
1100 static int hwsim_fops_group_write(void *dat, u64 val)
1102 struct mac80211_hwsim_data *data = dat;
1107 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1108 hwsim_fops_group_read, hwsim_fops_group_write,
1111 static int __init init_mac80211_hwsim(void)
1115 struct mac80211_hwsim_data *data;
1116 struct ieee80211_hw *hw;
1117 enum ieee80211_band band;
1119 if (radios < 1 || radios > 100)
1122 spin_lock_init(&hwsim_radio_lock);
1123 INIT_LIST_HEAD(&hwsim_radios);
1125 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1126 if (IS_ERR(hwsim_class))
1127 return PTR_ERR(hwsim_class);
1129 memset(addr, 0, ETH_ALEN);
1132 for (i = 0; i < radios; i++) {
1133 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1135 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1137 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1145 data->dev = device_create(hwsim_class, NULL, 0, hw,
1147 if (IS_ERR(data->dev)) {
1149 "mac80211_hwsim: device_create "
1150 "failed (%ld)\n", PTR_ERR(data->dev));
1152 goto failed_drvdata;
1154 data->dev->driver = &mac80211_hwsim_driver;
1156 SET_IEEE80211_DEV(hw, data->dev);
1159 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1160 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1161 data->addresses[1].addr[0] |= 0x40;
1162 hw->wiphy->n_addresses = 2;
1163 hw->wiphy->addresses = data->addresses;
1165 hw->channel_change_time = 1;
1167 hw->wiphy->interface_modes =
1168 BIT(NL80211_IFTYPE_STATION) |
1169 BIT(NL80211_IFTYPE_AP) |
1170 BIT(NL80211_IFTYPE_MESH_POINT);
1172 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1173 IEEE80211_HW_SIGNAL_DBM |
1174 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1175 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;
1177 /* ask mac80211 to reserve space for magic */
1178 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1179 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1181 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1182 sizeof(hwsim_channels_2ghz));
1183 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1184 sizeof(hwsim_channels_5ghz));
1185 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1187 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1188 struct ieee80211_supported_band *sband = &data->bands[band];
1190 case IEEE80211_BAND_2GHZ:
1191 sband->channels = data->channels_2ghz;
1193 ARRAY_SIZE(hwsim_channels_2ghz);
1194 sband->bitrates = data->rates;
1195 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1197 case IEEE80211_BAND_5GHZ:
1198 sband->channels = data->channels_5ghz;
1200 ARRAY_SIZE(hwsim_channels_5ghz);
1201 sband->bitrates = data->rates + 4;
1202 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1208 sband->ht_cap.ht_supported = true;
1209 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1210 IEEE80211_HT_CAP_GRN_FLD |
1211 IEEE80211_HT_CAP_SGI_40 |
1212 IEEE80211_HT_CAP_DSSSCCK40;
1213 sband->ht_cap.ampdu_factor = 0x3;
1214 sband->ht_cap.ampdu_density = 0x6;
1215 memset(&sband->ht_cap.mcs, 0,
1216 sizeof(sband->ht_cap.mcs));
1217 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1218 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1219 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1221 hw->wiphy->bands[band] = sband;
1223 /* By default all radios are belonging to the first group */
1226 /* Work to be done prior to ieee80211_register_hw() */
1228 case HWSIM_REGTEST_DISABLED:
1229 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1230 case HWSIM_REGTEST_DRIVER_REG_ALL:
1231 case HWSIM_REGTEST_DIFF_COUNTRY:
1233 * Nothing to be done for driver regulatory domain
1234 * hints prior to ieee80211_register_hw()
1237 case HWSIM_REGTEST_WORLD_ROAM:
1239 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1240 wiphy_apply_custom_regulatory(hw->wiphy,
1241 &hwsim_world_regdom_custom_01);
1244 case HWSIM_REGTEST_CUSTOM_WORLD:
1245 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1246 wiphy_apply_custom_regulatory(hw->wiphy,
1247 &hwsim_world_regdom_custom_01);
1249 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1251 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1252 wiphy_apply_custom_regulatory(hw->wiphy,
1253 &hwsim_world_regdom_custom_01);
1254 } else if (i == 1) {
1255 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1256 wiphy_apply_custom_regulatory(hw->wiphy,
1257 &hwsim_world_regdom_custom_02);
1260 case HWSIM_REGTEST_STRICT_ALL:
1261 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1263 case HWSIM_REGTEST_STRICT_FOLLOW:
1264 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1266 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1268 case HWSIM_REGTEST_ALL:
1270 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1271 wiphy_apply_custom_regulatory(hw->wiphy,
1272 &hwsim_world_regdom_custom_01);
1273 } else if (i == 1) {
1274 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1275 wiphy_apply_custom_regulatory(hw->wiphy,
1276 &hwsim_world_regdom_custom_02);
1278 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1284 /* give the regulatory workqueue a chance to run */
1286 schedule_timeout_interruptible(1);
1287 err = ieee80211_register_hw(hw);
1289 printk(KERN_DEBUG "mac80211_hwsim: "
1290 "ieee80211_register_hw failed (%d)\n", err);
1294 /* Work to be done after to ieee80211_register_hw() */
1296 case HWSIM_REGTEST_WORLD_ROAM:
1297 case HWSIM_REGTEST_DISABLED:
1299 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1301 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1303 case HWSIM_REGTEST_DRIVER_REG_ALL:
1304 case HWSIM_REGTEST_STRICT_ALL:
1305 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1307 case HWSIM_REGTEST_DIFF_COUNTRY:
1308 if (i < ARRAY_SIZE(hwsim_alpha2s))
1309 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1311 case HWSIM_REGTEST_CUSTOM_WORLD:
1312 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1314 * Nothing to be done for custom world regulatory
1315 * domains after to ieee80211_register_hw
1318 case HWSIM_REGTEST_STRICT_FOLLOW:
1320 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1322 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1324 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1326 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1328 case HWSIM_REGTEST_ALL:
1330 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1332 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1334 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1340 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1341 wiphy_name(hw->wiphy),
1342 hw->wiphy->perm_addr);
1344 data->debugfs = debugfs_create_dir("hwsim",
1345 hw->wiphy->debugfsdir);
1346 data->debugfs_ps = debugfs_create_file("ps", 0666,
1347 data->debugfs, data,
1349 data->debugfs_group = debugfs_create_file("group", 0666,
1350 data->debugfs, data,
1353 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1354 (unsigned long) hw);
1356 list_add_tail(&data->list, &hwsim_radios);
1359 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1360 if (hwsim_mon == NULL)
1365 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1370 err = register_netdevice(hwsim_mon);
1380 free_netdev(hwsim_mon);
1381 mac80211_hwsim_free();
1385 device_unregister(data->dev);
1387 ieee80211_free_hw(hw);
1389 mac80211_hwsim_free();
1394 static void __exit exit_mac80211_hwsim(void)
1396 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1398 mac80211_hwsim_free();
1399 unregister_netdev(hwsim_mon);
1403 module_init(init_mac80211_hwsim);
1404 module_exit(exit_mac80211_hwsim);