drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  *
   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.
   8  */
   9
  10 /*
  11  * TODO:
  12  * - IBSS mode simulation (Beacon transmission with competition for "air time")
  13  * - RX filtering based on filter configuration (data->rx_filter)
  14  */
  15
  16 #include <linux/list.h>
  17 #include <linux/spinlock.h>
  18 #include <net/dst.h>
  19 #include <net/xfrm.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>
  26
  27 MODULE_AUTHOR("Jouni Malinen");
  28 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  29 MODULE_LICENSE("GPL");
  30
  31 static int radios = 2;
  32 module_param(radios, int, 0444);
  33 MODULE_PARM_DESC(radios, "Number of simulated radios");
  34
  35 /**
  36  * enum hwsim_regtest - the type of regulatory tests we offer
  37  *
  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.
  46  *
  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
  64  *      domain.
  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
  80  *      first two.
  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
  88  *          domain request
  89  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
  90  *                 regulatory requests.
  91  */
  92 enum hwsim_regtest {
  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,
 104 };
 105
 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");
 110
 111 static const char *hwsim_alpha2s[] = {
 112         "FI",
 113         "AL",
 114         "US",
 115         "DE",
 116         "JP",
 117         "AL",
 118 };
 119
 120 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 121         .n_reg_rules = 4,
 122         .alpha2 =  "99",
 123         .reg_rules = {
 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),
 128         }
 129 };
 130
 131 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 132         .n_reg_rules = 2,
 133         .alpha2 =  "99",
 134         .reg_rules = {
 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),
 138         }
 139 };
 140
 141 struct hwsim_vif_priv {
 142         u32 magic;
 143         u8 bssid[ETH_ALEN];
 144         bool assoc;
 145         u16 aid;
 146 };
 147
 148 #define HWSIM_VIF_MAGIC 0x69537748
 149
 150 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 151 {
 152         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 153         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 154 }
 155
 156 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 157 {
 158         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 159         vp->magic = HWSIM_VIF_MAGIC;
 160 }
 161
 162 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 163 {
 164         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 165         vp->magic = 0;
 166 }
 167
 168 struct hwsim_sta_priv {
 169         u32 magic;
 170 };
 171
 172 #define HWSIM_STA_MAGIC 0x6d537748
 173
 174 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 175 {
 176         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 177         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 178 }
 179
 180 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 181 {
 182         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 183         sp->magic = HWSIM_STA_MAGIC;
 184 }
 185
 186 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 187 {
 188         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 189         sp->magic = 0;
 190 }
 191
 192 static struct class *hwsim_class;
 193
 194 static struct net_device *hwsim_mon; /* global monitor netdev */
 195
 196 #define CHAN2G(_freq)  { \
 197         .band = IEEE80211_BAND_2GHZ, \
 198         .center_freq = (_freq), \
 199         .hw_value = (_freq), \
 200         .max_power = 20, \
 201 }
 202
 203 #define CHAN5G(_freq) { \
 204         .band = IEEE80211_BAND_5GHZ, \
 205         .center_freq = (_freq), \
 206         .hw_value = (_freq), \
 207         .max_power = 20, \
 208 }
 209
 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 */
 225 };
 226
 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 */
 232
 233         CHAN5G(5260), /* Channel 52 */
 234         CHAN5G(5280), /* Channel 56 */
 235         CHAN5G(5300), /* Channel 60 */
 236         CHAN5G(5320), /* Channel 64 */
 237
 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 */
 249
 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 */
 255 };
 256
 257 static const struct ieee80211_rate hwsim_rates[] = {
 258         { .bitrate = 10 },
 259         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 260         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 261         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 262         { .bitrate = 60 },
 263         { .bitrate = 90 },
 264         { .bitrate = 120 },
 265         { .bitrate = 180 },
 266         { .bitrate = 240 },
 267         { .bitrate = 360 },
 268         { .bitrate = 480 },
 269         { .bitrate = 540 }
 270 };
 271
 272 static spinlock_t hwsim_radio_lock;
 273 static struct list_head hwsim_radios;
 274
 275 struct mac80211_hwsim_data {
 276         struct list_head list;
 277         struct ieee80211_hw *hw;
 278         struct device *dev;
 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)];
 283
 284         struct ieee80211_channel *channel;
 285         unsigned long beacon_int; /* in jiffies unit */
 286         unsigned int rx_filter;
 287         int started;
 288         struct timer_list beacon_timer;
 289         enum ps_mode {
 290                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 291         } ps;
 292         bool ps_poll_pending;
 293         struct dentry *debugfs;
 294         struct dentry *debugfs_ps;
 295
 296         /*
 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.
 300          */
 301         u64 group;
 302         struct dentry *debugfs_group;
 303 };
 304
 305
 306 struct hwsim_radiotap_hdr {
 307         struct ieee80211_radiotap_header hdr;
 308         u8 rt_flags;
 309         u8 rt_rate;
 310         __le16 rt_channel;
 311         __le16 rt_chbitmask;
 312 } __attribute__ ((packed));
 313
 314
 315 static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev)
 316 {
 317         /* TODO: allow packet injection */
 318         dev_kfree_skb(skb);
 319         return NETDEV_TX_OK;
 320 }
 321
 322
 323 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 324                                       struct sk_buff *tx_skb)
 325 {
 326         struct mac80211_hwsim_data *data = hw->priv;
 327         struct sk_buff *skb;
 328         struct hwsim_radiotap_hdr *hdr;
 329         u16 flags;
 330         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 331         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 332
 333         if (!netif_running(hwsim_mon))
 334                 return;
 335
 336         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 337         if (skb == NULL)
 338                 return;
 339
 340         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 341         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 342         hdr->hdr.it_pad = 0;
 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));
 347         hdr->rt_flags = 0;
 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;
 353         else
 354                 flags |= IEEE80211_CHAN_CCK;
 355         hdr->rt_chbitmask = cpu_to_le16(flags);
 356
 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));
 363         netif_rx(skb);
 364 }
 365
 366
 367 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 368                            struct sk_buff *skb)
 369 {
 370         switch (data->ps) {
 371         case PS_DISABLED:
 372                 return true;
 373         case PS_ENABLED:
 374                 return false;
 375         case PS_AUTO_POLL:
 376                 /* TODO: accept (some) Beacons by default and other frames only
 377                  * if pending PS-Poll has been sent */
 378                 return true;
 379         case PS_MANUAL_POLL:
 380                 /* Allow unicast frames to own address if there is a pending
 381                  * PS-Poll */
 382                 if (data->ps_poll_pending &&
 383                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 384                            ETH_ALEN) == 0) {
 385                         data->ps_poll_pending = false;
 386                         return true;
 387                 }
 388                 return false;
 389         }
 390
 391         return true;
 392 }
 393
 394
 395 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 396                                     struct sk_buff *skb)
 397 {
 398         struct mac80211_hwsim_data *data = hw->priv, *data2;
 399         bool ack = false;
 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;
 403
 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) */
 410
 411         if (data->ps != PS_DISABLED)
 412                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 413
 414         /* release the skb's source info */
 415         skb_orphan(skb);
 416         dst_release(skb->dst);
 417         skb->dst = NULL;
 418         skb->mark = 0;
 419         secpath_reset(skb);
 420         nf_reset(skb);
 421
 422         /* Copy skb to all enabled radios that are on the current frequency */
 423         spin_lock(&hwsim_radio_lock);
 424         list_for_each_entry(data2, &hwsim_radios, list) {
 425                 struct sk_buff *nskb;
 426
 427                 if (data == data2)
 428                         continue;
 429
 430                 if (!data2->started || !hwsim_ps_rx_ok(data2, skb) ||
 431                     !data->channel || !data2->channel ||
 432                     data->channel->center_freq != data2->channel->center_freq ||
 433                     !(data->group & data2->group))
 434                         continue;
 435
 436                 nskb = skb_copy(skb, GFP_ATOMIC);
 437                 if (nskb == NULL)
 438                         continue;
 439
 440                 if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr,
 441                            ETH_ALEN) == 0)
 442                         ack = true;
 443                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 444                 ieee80211_rx_irqsafe(data2->hw, nskb);
 445         }
 446         spin_unlock(&hwsim_radio_lock);
 447
 448         return ack;
 449 }
 450
 451
 452 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 453 {
 454         bool ack;
 455         struct ieee80211_tx_info *txi;
 456
 457         mac80211_hwsim_monitor_rx(hw, skb);
 458
 459         if (skb->len < 10) {
 460                 /* Should not happen; just a sanity check for addr1 use */
 461                 dev_kfree_skb(skb);
 462                 return NETDEV_TX_OK;
 463         }
 464
 465         ack = mac80211_hwsim_tx_frame(hw, skb);
 466
 467         txi = IEEE80211_SKB_CB(skb);
 468
 469         if (txi->control.vif)
 470                 hwsim_check_magic(txi->control.vif);
 471         if (txi->control.sta)
 472                 hwsim_check_sta_magic(txi->control.sta);
 473
 474         ieee80211_tx_info_clear_status(txi);
 475         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 476                 txi->flags |= IEEE80211_TX_STAT_ACK;
 477         ieee80211_tx_status_irqsafe(hw, skb);
 478         return NETDEV_TX_OK;
 479 }
 480
 481
 482 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 483 {
 484         struct mac80211_hwsim_data *data = hw->priv;
 485         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 486         data->started = 1;
 487         return 0;
 488 }
 489
 490
 491 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 492 {
 493         struct mac80211_hwsim_data *data = hw->priv;
 494         data->started = 0;
 495         del_timer(&data->beacon_timer);
 496         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 497 }
 498
 499
 500 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 501                                         struct ieee80211_if_init_conf *conf)
 502 {
 503         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 504                wiphy_name(hw->wiphy), __func__, conf->type,
 505                conf->mac_addr);
 506         hwsim_set_magic(conf->vif);
 507         return 0;
 508 }
 509
 510
 511 static void mac80211_hwsim_remove_interface(
 512         struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
 513 {
 514         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 515                wiphy_name(hw->wiphy), __func__, conf->type,
 516                conf->mac_addr);
 517         hwsim_check_magic(conf->vif);
 518         hwsim_clear_magic(conf->vif);
 519 }
 520
 521
 522 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 523                                      struct ieee80211_vif *vif)
 524 {
 525         struct ieee80211_hw *hw = arg;
 526         struct sk_buff *skb;
 527         struct ieee80211_tx_info *info;
 528
 529         hwsim_check_magic(vif);
 530
 531         if (vif->type != NL80211_IFTYPE_AP &&
 532             vif->type != NL80211_IFTYPE_MESH_POINT)
 533                 return;
 534
 535         skb = ieee80211_beacon_get(hw, vif);
 536         if (skb == NULL)
 537                 return;
 538         info = IEEE80211_SKB_CB(skb);
 539
 540         mac80211_hwsim_monitor_rx(hw, skb);
 541         mac80211_hwsim_tx_frame(hw, skb);
 542         dev_kfree_skb(skb);
 543 }
 544
 545
 546 static void mac80211_hwsim_beacon(unsigned long arg)
 547 {
 548         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 549         struct mac80211_hwsim_data *data = hw->priv;
 550
 551         if (!data->started)
 552                 return;
 553
 554         ieee80211_iterate_active_interfaces_atomic(
 555                 hw, mac80211_hwsim_beacon_tx, hw);
 556
 557         data->beacon_timer.expires = jiffies + data->beacon_int;
 558         add_timer(&data->beacon_timer);
 559 }
 560
 561
 562 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 563 {
 564         struct mac80211_hwsim_data *data = hw->priv;
 565         struct ieee80211_conf *conf = &hw->conf;
 566
 567         printk(KERN_DEBUG "%s:%s (freq=%d idle=%d ps=%d)\n",
 568                wiphy_name(hw->wiphy), __func__,
 569                conf->channel->center_freq,
 570                !!(conf->flags & IEEE80211_CONF_IDLE),
 571                !!(conf->flags & IEEE80211_CONF_PS));
 572
 573         data->channel = conf->channel;
 574         if (!data->started || !data->beacon_int)
 575                 del_timer(&data->beacon_timer);
 576         else
 577                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 578
 579         return 0;
 580 }
 581
 582
 583 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 584                                             unsigned int changed_flags,
 585                                             unsigned int *total_flags,
 586                                             int mc_count,
 587                                             struct dev_addr_list *mc_list)
 588 {
 589         struct mac80211_hwsim_data *data = hw->priv;
 590
 591         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 592
 593         data->rx_filter = 0;
 594         if (*total_flags & FIF_PROMISC_IN_BSS)
 595                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 596         if (*total_flags & FIF_ALLMULTI)
 597                 data->rx_filter |= FIF_ALLMULTI;
 598
 599         *total_flags = data->rx_filter;
 600 }
 601
 602 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 603                                             struct ieee80211_vif *vif,
 604                                             struct ieee80211_bss_conf *info,
 605                                             u32 changed)
 606 {
 607         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 608         struct mac80211_hwsim_data *data = hw->priv;
 609
 610         hwsim_check_magic(vif);
 611
 612         printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
 613                wiphy_name(hw->wiphy), __func__, changed);
 614
 615         if (changed & BSS_CHANGED_BSSID) {
 616                 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
 617                        wiphy_name(hw->wiphy), __func__,
 618                        info->bssid);
 619                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 620         }
 621
 622         if (changed & BSS_CHANGED_ASSOC) {
 623                 printk(KERN_DEBUG "  %s: ASSOC: assoc=%d aid=%d\n",
 624                        wiphy_name(hw->wiphy), info->assoc, info->aid);
 625                 vp->assoc = info->assoc;
 626                 vp->aid = info->aid;
 627         }
 628
 629         if (changed & BSS_CHANGED_BEACON_INT) {
 630                 printk(KERN_DEBUG "  %s: BCNINT: %d\n",
 631                        wiphy_name(hw->wiphy), info->beacon_int);
 632                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 633                 if (WARN_ON(!data->beacon_int))
 634                         data->beacon_int = 1;
 635         }
 636
 637         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 638                 printk(KERN_DEBUG "  %s: ERP_CTS_PROT: %d\n",
 639                        wiphy_name(hw->wiphy), info->use_cts_prot);
 640         }
 641
 642         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 643                 printk(KERN_DEBUG "  %s: ERP_PREAMBLE: %d\n",
 644                        wiphy_name(hw->wiphy), info->use_short_preamble);
 645         }
 646
 647         if (changed & BSS_CHANGED_ERP_SLOT) {
 648                 printk(KERN_DEBUG "  %s: ERP_SLOT: %d\n",
 649                        wiphy_name(hw->wiphy), info->use_short_slot);
 650         }
 651
 652         if (changed & BSS_CHANGED_HT) {
 653                 printk(KERN_DEBUG "  %s: HT: op_mode=0x%x\n",
 654                        wiphy_name(hw->wiphy),
 655                        info->ht_operation_mode);
 656         }
 657
 658         if (changed & BSS_CHANGED_BASIC_RATES) {
 659                 printk(KERN_DEBUG "  %s: BASIC_RATES: 0x%llx\n",
 660                        wiphy_name(hw->wiphy),
 661                        (unsigned long long) info->basic_rates);
 662         }
 663 }
 664
 665 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 666                                       struct ieee80211_vif *vif,
 667                                       enum sta_notify_cmd cmd,
 668                                       struct ieee80211_sta *sta)
 669 {
 670         hwsim_check_magic(vif);
 671         switch (cmd) {
 672         case STA_NOTIFY_ADD:
 673                 hwsim_set_sta_magic(sta);
 674                 break;
 675         case STA_NOTIFY_REMOVE:
 676                 hwsim_clear_sta_magic(sta);
 677                 break;
 678         case STA_NOTIFY_SLEEP:
 679         case STA_NOTIFY_AWAKE:
 680                 /* TODO: make good use of these flags */
 681                 break;
 682         }
 683 }
 684
 685 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 686                                   struct ieee80211_sta *sta,
 687                                   bool set)
 688 {
 689         hwsim_check_sta_magic(sta);
 690         return 0;
 691 }
 692
 693 static int mac80211_hwsim_conf_tx(
 694         struct ieee80211_hw *hw, u16 queue,
 695         const struct ieee80211_tx_queue_params *params)
 696 {
 697         printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
 698                "aifs=%d)\n",
 699                wiphy_name(hw->wiphy), __func__, queue,
 700                params->txop, params->cw_min, params->cw_max, params->aifs);
 701         return 0;
 702 }
 703
 704 static const struct ieee80211_ops mac80211_hwsim_ops =
 705 {
 706         .tx = mac80211_hwsim_tx,
 707         .start = mac80211_hwsim_start,
 708         .stop = mac80211_hwsim_stop,
 709         .add_interface = mac80211_hwsim_add_interface,
 710         .remove_interface = mac80211_hwsim_remove_interface,
 711         .config = mac80211_hwsim_config,
 712         .configure_filter = mac80211_hwsim_configure_filter,
 713         .bss_info_changed = mac80211_hwsim_bss_info_changed,
 714         .sta_notify = mac80211_hwsim_sta_notify,
 715         .set_tim = mac80211_hwsim_set_tim,
 716         .conf_tx = mac80211_hwsim_conf_tx,
 717 };
 718
 719
 720 static void mac80211_hwsim_free(void)
 721 {
 722         struct list_head tmplist, *i, *tmp;
 723         struct mac80211_hwsim_data *data;
 724
 725         INIT_LIST_HEAD(&tmplist);
 726
 727         spin_lock_bh(&hwsim_radio_lock);
 728         list_for_each_safe(i, tmp, &hwsim_radios)
 729                 list_move(i, &tmplist);
 730         spin_unlock_bh(&hwsim_radio_lock);
 731
 732         list_for_each_entry(data, &tmplist, list) {
 733                 debugfs_remove(data->debugfs_group);
 734                 debugfs_remove(data->debugfs_ps);
 735                 debugfs_remove(data->debugfs);
 736                 ieee80211_unregister_hw(data->hw);
 737                 device_unregister(data->dev);
 738                 ieee80211_free_hw(data->hw);
 739         }
 740         class_destroy(hwsim_class);
 741 }
 742
 743
 744 static struct device_driver mac80211_hwsim_driver = {
 745         .name = "mac80211_hwsim"
 746 };
 747
 748 static const struct net_device_ops hwsim_netdev_ops = {
 749         .ndo_start_xmit         = hwsim_mon_xmit,
 750         .ndo_change_mtu         = eth_change_mtu,
 751         .ndo_set_mac_address    = eth_mac_addr,
 752         .ndo_validate_addr      = eth_validate_addr,
 753 };
 754
 755 static void hwsim_mon_setup(struct net_device *dev)
 756 {
 757         dev->netdev_ops = &hwsim_netdev_ops;
 758         dev->destructor = free_netdev;
 759         ether_setup(dev);
 760         dev->tx_queue_len = 0;
 761         dev->type = ARPHRD_IEEE80211_RADIOTAP;
 762         memset(dev->dev_addr, 0, ETH_ALEN);
 763         dev->dev_addr[0] = 0x12;
 764 }
 765
 766
 767 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 768 {
 769         struct mac80211_hwsim_data *data = dat;
 770         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 771         DECLARE_MAC_BUF(buf);
 772         struct sk_buff *skb;
 773         struct ieee80211_pspoll *pspoll;
 774
 775         if (!vp->assoc)
 776                 return;
 777
 778         printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
 779                wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
 780
 781         skb = dev_alloc_skb(sizeof(*pspoll));
 782         if (!skb)
 783                 return;
 784         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 785         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 786                                             IEEE80211_STYPE_PSPOLL |
 787                                             IEEE80211_FCTL_PM);
 788         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 789         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 790         memcpy(pspoll->ta, mac, ETH_ALEN);
 791         if (!mac80211_hwsim_tx_frame(data->hw, skb))
 792                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
 793         dev_kfree_skb(skb);
 794 }
 795
 796
 797 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 798                                 struct ieee80211_vif *vif, int ps)
 799 {
 800         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 801         DECLARE_MAC_BUF(buf);
 802         struct sk_buff *skb;
 803         struct ieee80211_hdr *hdr;
 804
 805         if (!vp->assoc)
 806                 return;
 807
 808         printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
 809                wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
 810
 811         skb = dev_alloc_skb(sizeof(*hdr));
 812         if (!skb)
 813                 return;
 814         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 815         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 816                                          IEEE80211_STYPE_NULLFUNC |
 817                                          (ps ? IEEE80211_FCTL_PM : 0));
 818         hdr->duration_id = cpu_to_le16(0);
 819         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 820         memcpy(hdr->addr2, mac, ETH_ALEN);
 821         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 822         if (!mac80211_hwsim_tx_frame(data->hw, skb))
 823                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
 824         dev_kfree_skb(skb);
 825 }
 826
 827
 828 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 829                                    struct ieee80211_vif *vif)
 830 {
 831         struct mac80211_hwsim_data *data = dat;
 832         hwsim_send_nullfunc(data, mac, vif, 1);
 833 }
 834
 835
 836 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 837                                       struct ieee80211_vif *vif)
 838 {
 839         struct mac80211_hwsim_data *data = dat;
 840         hwsim_send_nullfunc(data, mac, vif, 0);
 841 }
 842
 843
 844 static int hwsim_fops_ps_read(void *dat, u64 *val)
 845 {
 846         struct mac80211_hwsim_data *data = dat;
 847         *val = data->ps;
 848         return 0;
 849 }
 850
 851 static int hwsim_fops_ps_write(void *dat, u64 val)
 852 {
 853         struct mac80211_hwsim_data *data = dat;
 854         enum ps_mode old_ps;
 855
 856         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 857             val != PS_MANUAL_POLL)
 858                 return -EINVAL;
 859
 860         old_ps = data->ps;
 861         data->ps = val;
 862
 863         if (val == PS_MANUAL_POLL) {
 864                 ieee80211_iterate_active_interfaces(data->hw,
 865                                                     hwsim_send_ps_poll, data);
 866                 data->ps_poll_pending = true;
 867         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 868                 ieee80211_iterate_active_interfaces(data->hw,
 869                                                     hwsim_send_nullfunc_ps,
 870                                                     data);
 871         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 872                 ieee80211_iterate_active_interfaces(data->hw,
 873                                                     hwsim_send_nullfunc_no_ps,
 874                                                     data);
 875         }
 876
 877         return 0;
 878 }
 879
 880 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 881                         "%llu\n");
 882
 883
 884 static int hwsim_fops_group_read(void *dat, u64 *val)
 885 {
 886         struct mac80211_hwsim_data *data = dat;
 887         *val = data->group;
 888         return 0;
 889 }
 890
 891 static int hwsim_fops_group_write(void *dat, u64 val)
 892 {
 893         struct mac80211_hwsim_data *data = dat;
 894         data->group = val;
 895         return 0;
 896 }
 897
 898 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 899                         hwsim_fops_group_read, hwsim_fops_group_write,
 900                         "%llx\n");
 901
 902 static int __init init_mac80211_hwsim(void)
 903 {
 904         int i, err = 0;
 905         u8 addr[ETH_ALEN];
 906         struct mac80211_hwsim_data *data;
 907         struct ieee80211_hw *hw;
 908         enum ieee80211_band band;
 909
 910         if (radios < 1 || radios > 100)
 911                 return -EINVAL;
 912
 913         spin_lock_init(&hwsim_radio_lock);
 914         INIT_LIST_HEAD(&hwsim_radios);
 915
 916         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
 917         if (IS_ERR(hwsim_class))
 918                 return PTR_ERR(hwsim_class);
 919
 920         memset(addr, 0, ETH_ALEN);
 921         addr[0] = 0x02;
 922
 923         for (i = 0; i < radios; i++) {
 924                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
 925                        i);
 926                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
 927                 if (!hw) {
 928                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
 929                                "failed\n");
 930                         err = -ENOMEM;
 931                         goto failed;
 932                 }
 933                 data = hw->priv;
 934                 data->hw = hw;
 935
 936                 data->dev = device_create(hwsim_class, NULL, 0, hw,
 937                                           "hwsim%d", i);
 938                 if (IS_ERR(data->dev)) {
 939                         printk(KERN_DEBUG
 940                                "mac80211_hwsim: device_create "
 941                                "failed (%ld)\n", PTR_ERR(data->dev));
 942                         err = -ENOMEM;
 943                         goto failed_drvdata;
 944                 }
 945                 data->dev->driver = &mac80211_hwsim_driver;
 946
 947                 SET_IEEE80211_DEV(hw, data->dev);
 948                 addr[3] = i >> 8;
 949                 addr[4] = i;
 950                 SET_IEEE80211_PERM_ADDR(hw, addr);
 951
 952                 hw->channel_change_time = 1;
 953                 hw->queues = 4;
 954                 hw->wiphy->interface_modes =
 955                         BIT(NL80211_IFTYPE_STATION) |
 956                         BIT(NL80211_IFTYPE_AP) |
 957                         BIT(NL80211_IFTYPE_MESH_POINT);
 958
 959                 hw->flags = IEEE80211_HW_MFP_CAPABLE;
 960
 961                 /* ask mac80211 to reserve space for magic */
 962                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
 963                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
 964
 965                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
 966                         sizeof(hwsim_channels_2ghz));
 967                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
 968                         sizeof(hwsim_channels_5ghz));
 969                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
 970
 971                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
 972                         struct ieee80211_supported_band *sband = &data->bands[band];
 973                         switch (band) {
 974                         case IEEE80211_BAND_2GHZ:
 975                                 sband->channels = data->channels_2ghz;
 976                                 sband->n_channels =
 977                                         ARRAY_SIZE(hwsim_channels_2ghz);
 978                                 break;
 979                         case IEEE80211_BAND_5GHZ:
 980                                 sband->channels = data->channels_5ghz;
 981                                 sband->n_channels =
 982                                         ARRAY_SIZE(hwsim_channels_5ghz);
 983                                 break;
 984                         default:
 985                                 break;
 986                         }
 987
 988                         sband->bitrates = data->rates;
 989                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
 990
 991                         sband->ht_cap.ht_supported = true;
 992                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 993                                 IEEE80211_HT_CAP_GRN_FLD |
 994                                 IEEE80211_HT_CAP_SGI_40 |
 995                                 IEEE80211_HT_CAP_DSSSCCK40;
 996                         sband->ht_cap.ampdu_factor = 0x3;
 997                         sband->ht_cap.ampdu_density = 0x6;
 998                         memset(&sband->ht_cap.mcs, 0,
 999                                sizeof(sband->ht_cap.mcs));
1000                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1001                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1002                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1003
1004                         hw->wiphy->bands[band] = sband;
1005                 }
1006                 /* By default all radios are belonging to the first group */
1007                 data->group = 1;
1008
1009                 /* Work to be done prior to ieee80211_register_hw() */
1010                 switch (regtest) {
1011                 case HWSIM_REGTEST_DISABLED:
1012                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1013                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1014                 case HWSIM_REGTEST_DIFF_COUNTRY:
1015                         /*
1016                          * Nothing to be done for driver regulatory domain
1017                          * hints prior to ieee80211_register_hw()
1018                          */
1019                         break;
1020                 case HWSIM_REGTEST_WORLD_ROAM:
1021                         if (i == 0) {
1022                                 hw->wiphy->custom_regulatory = true;
1023                                 wiphy_apply_custom_regulatory(hw->wiphy,
1024                                         &hwsim_world_regdom_custom_01);
1025                         }
1026                         break;
1027                 case HWSIM_REGTEST_CUSTOM_WORLD:
1028                         hw->wiphy->custom_regulatory = true;
1029                         wiphy_apply_custom_regulatory(hw->wiphy,
1030                                 &hwsim_world_regdom_custom_01);
1031                         break;
1032                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1033                         if (i == 0) {
1034                                 hw->wiphy->custom_regulatory = true;
1035                                 wiphy_apply_custom_regulatory(hw->wiphy,
1036                                         &hwsim_world_regdom_custom_01);
1037                         } else if (i == 1) {
1038                                 hw->wiphy->custom_regulatory = true;
1039                                 wiphy_apply_custom_regulatory(hw->wiphy,
1040                                         &hwsim_world_regdom_custom_02);
1041                         }
1042                         break;
1043                 case HWSIM_REGTEST_STRICT_ALL:
1044                         hw->wiphy->strict_regulatory = true;
1045                         break;
1046                 case HWSIM_REGTEST_STRICT_FOLLOW:
1047                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1048                         if (i == 0)
1049                                 hw->wiphy->strict_regulatory = true;
1050                         break;
1051                 case HWSIM_REGTEST_ALL:
1052                         if (i == 0) {
1053                                 hw->wiphy->custom_regulatory = true;
1054                                 wiphy_apply_custom_regulatory(hw->wiphy,
1055                                         &hwsim_world_regdom_custom_01);
1056                         } else if (i == 1) {
1057                                 hw->wiphy->custom_regulatory = true;
1058                                 wiphy_apply_custom_regulatory(hw->wiphy,
1059                                         &hwsim_world_regdom_custom_02);
1060                         } else if (i == 4)
1061                                 hw->wiphy->strict_regulatory = true;
1062                         break;
1063                 default:
1064                         break;
1065                 }
1066
1067                 /* give the regulatory workqueue a chance to run */
1068                 if (regtest)
1069                         schedule_timeout_interruptible(1);
1070                 err = ieee80211_register_hw(hw);
1071                 if (err < 0) {
1072                         printk(KERN_DEBUG "mac80211_hwsim: "
1073                                "ieee80211_register_hw failed (%d)\n", err);
1074                         goto failed_hw;
1075                 }
1076
1077                 /* Work to be done after to ieee80211_register_hw() */
1078                 switch (regtest) {
1079                 case HWSIM_REGTEST_WORLD_ROAM:
1080                 case HWSIM_REGTEST_DISABLED:
1081                         break;
1082                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1083                         if (!i)
1084                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1085                         break;
1086                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1087                 case HWSIM_REGTEST_STRICT_ALL:
1088                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1089                         break;
1090                 case HWSIM_REGTEST_DIFF_COUNTRY:
1091                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1092                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1093                         break;
1094                 case HWSIM_REGTEST_CUSTOM_WORLD:
1095                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1096                         /*
1097                          * Nothing to be done for custom world regulatory
1098                          * domains after to ieee80211_register_hw
1099                          */
1100                         break;
1101                 case HWSIM_REGTEST_STRICT_FOLLOW:
1102                         if (i == 0)
1103                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1104                         break;
1105                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1106                         if (i == 0)
1107                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1108                         else if (i == 1)
1109                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1110                         break;
1111                 case HWSIM_REGTEST_ALL:
1112                         if (i == 2)
1113                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1114                         else if (i == 3)
1115                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1116                         else if (i == 4)
1117                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1118                         break;
1119                 default:
1120                         break;
1121                 }
1122
1123                 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1124                        wiphy_name(hw->wiphy),
1125                        hw->wiphy->perm_addr);
1126
1127                 data->debugfs = debugfs_create_dir("hwsim",
1128                                                    hw->wiphy->debugfsdir);
1129                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1130                                                        data->debugfs, data,
1131                                                        &hwsim_fops_ps);
1132                 data->debugfs_group = debugfs_create_file("group", 0666,
1133                                                         data->debugfs, data,
1134                                                         &hwsim_fops_group);
1135
1136                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1137                             (unsigned long) hw);
1138
1139                 list_add_tail(&data->list, &hwsim_radios);
1140         }
1141
1142         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1143         if (hwsim_mon == NULL)
1144                 goto failed;
1145
1146         rtnl_lock();
1147
1148         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1149         if (err < 0)
1150                 goto failed_mon;
1151
1152
1153         err = register_netdevice(hwsim_mon);
1154         if (err < 0)
1155                 goto failed_mon;
1156
1157         rtnl_unlock();
1158
1159         return 0;
1160
1161 failed_mon:
1162         rtnl_unlock();
1163         free_netdev(hwsim_mon);
1164         mac80211_hwsim_free();
1165         return err;
1166
1167 failed_hw:
1168         device_unregister(data->dev);
1169 failed_drvdata:
1170         ieee80211_free_hw(hw);
1171 failed:
1172         mac80211_hwsim_free();
1173         return err;
1174 }
1175
1176
1177 static void __exit exit_mac80211_hwsim(void)
1178 {
1179         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1180
1181         unregister_netdev(hwsim_mon);
1182         mac80211_hwsim_free();
1183 }
1184
1185
1186 module_init(init_mac80211_hwsim);
1187 module_exit(exit_mac80211_hwsim);