SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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         skb_dst_drop(skb);
 417         skb->mark = 0;
 418         secpath_reset(skb);
 419         nf_reset(skb);
 420
 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;
 425
 426                 if (data == data2)
 427                         continue;
 428
 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))
 433                         continue;
 434
 435                 nskb = skb_copy(skb, GFP_ATOMIC);
 436                 if (nskb == NULL)
 437                         continue;
 438
 439                 if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr,
 440                            ETH_ALEN) == 0)
 441                         ack = true;
 442                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 443                 ieee80211_rx_irqsafe(data2->hw, nskb);
 444         }
 445         spin_unlock(&hwsim_radio_lock);
 446
 447         return ack;
 448 }
 449
 450
 451 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 452 {
 453         bool ack;
 454         struct ieee80211_tx_info *txi;
 455
 456         mac80211_hwsim_monitor_rx(hw, skb);
 457
 458         if (skb->len < 10) {
 459                 /* Should not happen; just a sanity check for addr1 use */
 460                 dev_kfree_skb(skb);
 461                 return NETDEV_TX_OK;
 462         }
 463
 464         ack = mac80211_hwsim_tx_frame(hw, skb);
 465
 466         txi = IEEE80211_SKB_CB(skb);
 467
 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);
 472
 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);
 477         return NETDEV_TX_OK;
 478 }
 479
 480
 481 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 482 {
 483         struct mac80211_hwsim_data *data = hw->priv;
 484         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 485         data->started = 1;
 486         return 0;
 487 }
 488
 489
 490 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 491 {
 492         struct mac80211_hwsim_data *data = hw->priv;
 493         data->started = 0;
 494         del_timer(&data->beacon_timer);
 495         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 496 }
 497
 498
 499 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 500                                         struct ieee80211_if_init_conf *conf)
 501 {
 502         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 503                wiphy_name(hw->wiphy), __func__, conf->type,
 504                conf->mac_addr);
 505         hwsim_set_magic(conf->vif);
 506         return 0;
 507 }
 508
 509
 510 static void mac80211_hwsim_remove_interface(
 511         struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf)
 512 {
 513         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 514                wiphy_name(hw->wiphy), __func__, conf->type,
 515                conf->mac_addr);
 516         hwsim_check_magic(conf->vif);
 517         hwsim_clear_magic(conf->vif);
 518 }
 519
 520
 521 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 522                                      struct ieee80211_vif *vif)
 523 {
 524         struct ieee80211_hw *hw = arg;
 525         struct sk_buff *skb;
 526         struct ieee80211_tx_info *info;
 527
 528         hwsim_check_magic(vif);
 529
 530         if (vif->type != NL80211_IFTYPE_AP &&
 531             vif->type != NL80211_IFTYPE_MESH_POINT)
 532                 return;
 533
 534         skb = ieee80211_beacon_get(hw, vif);
 535         if (skb == NULL)
 536                 return;
 537         info = IEEE80211_SKB_CB(skb);
 538
 539         mac80211_hwsim_monitor_rx(hw, skb);
 540         mac80211_hwsim_tx_frame(hw, skb);
 541         dev_kfree_skb(skb);
 542 }
 543
 544
 545 static void mac80211_hwsim_beacon(unsigned long arg)
 546 {
 547         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 548         struct mac80211_hwsim_data *data = hw->priv;
 549
 550         if (!data->started)
 551                 return;
 552
 553         ieee80211_iterate_active_interfaces_atomic(
 554                 hw, mac80211_hwsim_beacon_tx, hw);
 555
 556         data->beacon_timer.expires = jiffies + data->beacon_int;
 557         add_timer(&data->beacon_timer);
 558 }
 559
 560
 561 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 562 {
 563         struct mac80211_hwsim_data *data = hw->priv;
 564         struct ieee80211_conf *conf = &hw->conf;
 565
 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));
 571
 572         data->channel = conf->channel;
 573         if (!data->started || !data->beacon_int)
 574                 del_timer(&data->beacon_timer);
 575         else
 576                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 577
 578         return 0;
 579 }
 580
 581
 582 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 583                                             unsigned int changed_flags,
 584                                             unsigned int *total_flags,
 585                                             int mc_count,
 586                                             struct dev_addr_list *mc_list)
 587 {
 588         struct mac80211_hwsim_data *data = hw->priv;
 589
 590         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 591
 592         data->rx_filter = 0;
 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;
 597
 598         *total_flags = data->rx_filter;
 599 }
 600
 601 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 602                                             struct ieee80211_vif *vif,
 603                                             struct ieee80211_bss_conf *info,
 604                                             u32 changed)
 605 {
 606         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 607         struct mac80211_hwsim_data *data = hw->priv;
 608
 609         hwsim_check_magic(vif);
 610
 611         printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
 612                wiphy_name(hw->wiphy), __func__, changed);
 613
 614         if (changed & BSS_CHANGED_BSSID) {
 615                 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
 616                        wiphy_name(hw->wiphy), __func__,
 617                        info->bssid);
 618                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 619         }
 620
 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;
 625                 vp->aid = info->aid;
 626         }
 627
 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;
 634         }
 635
 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);
 639         }
 640
 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);
 644         }
 645
 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);
 649         }
 650
 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);
 655         }
 656
 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);
 661         }
 662 }
 663
 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)
 668 {
 669         hwsim_check_magic(vif);
 670         switch (cmd) {
 671         case STA_NOTIFY_ADD:
 672                 hwsim_set_sta_magic(sta);
 673                 break;
 674         case STA_NOTIFY_REMOVE:
 675                 hwsim_clear_sta_magic(sta);
 676                 break;
 677         case STA_NOTIFY_SLEEP:
 678         case STA_NOTIFY_AWAKE:
 679                 /* TODO: make good use of these flags */
 680                 break;
 681         }
 682 }
 683
 684 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 685                                   struct ieee80211_sta *sta,
 686                                   bool set)
 687 {
 688         hwsim_check_sta_magic(sta);
 689         return 0;
 690 }
 691
 692 static int mac80211_hwsim_conf_tx(
 693         struct ieee80211_hw *hw, u16 queue,
 694         const struct ieee80211_tx_queue_params *params)
 695 {
 696         printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
 697                "aifs=%d)\n",
 698                wiphy_name(hw->wiphy), __func__, queue,
 699                params->txop, params->cw_min, params->cw_max, params->aifs);
 700         return 0;
 701 }
 702
 703 static const struct ieee80211_ops mac80211_hwsim_ops =
 704 {
 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,
 716 };
 717
 718
 719 static void mac80211_hwsim_free(void)
 720 {
 721         struct list_head tmplist, *i, *tmp;
 722         struct mac80211_hwsim_data *data;
 723
 724         INIT_LIST_HEAD(&tmplist);
 725
 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);
 730
 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);
 738         }
 739         class_destroy(hwsim_class);
 740 }
 741
 742
 743 static struct device_driver mac80211_hwsim_driver = {
 744         .name = "mac80211_hwsim"
 745 };
 746
 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,
 752 };
 753
 754 static void hwsim_mon_setup(struct net_device *dev)
 755 {
 756         dev->netdev_ops = &hwsim_netdev_ops;
 757         dev->destructor = free_netdev;
 758         ether_setup(dev);
 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;
 763 }
 764
 765
 766 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 767 {
 768         struct mac80211_hwsim_data *data = dat;
 769         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 770         DECLARE_MAC_BUF(buf);
 771         struct sk_buff *skb;
 772         struct ieee80211_pspoll *pspoll;
 773
 774         if (!vp->assoc)
 775                 return;
 776
 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);
 779
 780         skb = dev_alloc_skb(sizeof(*pspoll));
 781         if (!skb)
 782                 return;
 783         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 784         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 785                                             IEEE80211_STYPE_PSPOLL |
 786                                             IEEE80211_FCTL_PM);
 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__);
 792         dev_kfree_skb(skb);
 793 }
 794
 795
 796 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 797                                 struct ieee80211_vif *vif, int ps)
 798 {
 799         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 800         DECLARE_MAC_BUF(buf);
 801         struct sk_buff *skb;
 802         struct ieee80211_hdr *hdr;
 803
 804         if (!vp->assoc)
 805                 return;
 806
 807         printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
 808                wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
 809
 810         skb = dev_alloc_skb(sizeof(*hdr));
 811         if (!skb)
 812                 return;
 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__);
 823         dev_kfree_skb(skb);
 824 }
 825
 826
 827 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 828                                    struct ieee80211_vif *vif)
 829 {
 830         struct mac80211_hwsim_data *data = dat;
 831         hwsim_send_nullfunc(data, mac, vif, 1);
 832 }
 833
 834
 835 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 836                                       struct ieee80211_vif *vif)
 837 {
 838         struct mac80211_hwsim_data *data = dat;
 839         hwsim_send_nullfunc(data, mac, vif, 0);
 840 }
 841
 842
 843 static int hwsim_fops_ps_read(void *dat, u64 *val)
 844 {
 845         struct mac80211_hwsim_data *data = dat;
 846         *val = data->ps;
 847         return 0;
 848 }
 849
 850 static int hwsim_fops_ps_write(void *dat, u64 val)
 851 {
 852         struct mac80211_hwsim_data *data = dat;
 853         enum ps_mode old_ps;
 854
 855         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 856             val != PS_MANUAL_POLL)
 857                 return -EINVAL;
 858
 859         old_ps = data->ps;
 860         data->ps = val;
 861
 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,
 869                                                     data);
 870         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 871                 ieee80211_iterate_active_interfaces(data->hw,
 872                                                     hwsim_send_nullfunc_no_ps,
 873                                                     data);
 874         }
 875
 876         return 0;
 877 }
 878
 879 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 880                         "%llu\n");
 881
 882
 883 static int hwsim_fops_group_read(void *dat, u64 *val)
 884 {
 885         struct mac80211_hwsim_data *data = dat;
 886         *val = data->group;
 887         return 0;
 888 }
 889
 890 static int hwsim_fops_group_write(void *dat, u64 val)
 891 {
 892         struct mac80211_hwsim_data *data = dat;
 893         data->group = val;
 894         return 0;
 895 }
 896
 897 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 898                         hwsim_fops_group_read, hwsim_fops_group_write,
 899                         "%llx\n");
 900
 901 static int __init init_mac80211_hwsim(void)
 902 {
 903         int i, err = 0;
 904         u8 addr[ETH_ALEN];
 905         struct mac80211_hwsim_data *data;
 906         struct ieee80211_hw *hw;
 907         enum ieee80211_band band;
 908
 909         if (radios < 1 || radios > 100)
 910                 return -EINVAL;
 911
 912         spin_lock_init(&hwsim_radio_lock);
 913         INIT_LIST_HEAD(&hwsim_radios);
 914
 915         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
 916         if (IS_ERR(hwsim_class))
 917                 return PTR_ERR(hwsim_class);
 918
 919         memset(addr, 0, ETH_ALEN);
 920         addr[0] = 0x02;
 921
 922         for (i = 0; i < radios; i++) {
 923                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
 924                        i);
 925                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
 926                 if (!hw) {
 927                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
 928                                "failed\n");
 929                         err = -ENOMEM;
 930                         goto failed;
 931                 }
 932                 data = hw->priv;
 933                 data->hw = hw;
 934
 935                 data->dev = device_create(hwsim_class, NULL, 0, hw,
 936                                           "hwsim%d", i);
 937                 if (IS_ERR(data->dev)) {
 938                         printk(KERN_DEBUG
 939                                "mac80211_hwsim: device_create "
 940                                "failed (%ld)\n", PTR_ERR(data->dev));
 941                         err = -ENOMEM;
 942                         goto failed_drvdata;
 943                 }
 944                 data->dev->driver = &mac80211_hwsim_driver;
 945
 946                 SET_IEEE80211_DEV(hw, data->dev);
 947                 addr[3] = i >> 8;
 948                 addr[4] = i;
 949                 SET_IEEE80211_PERM_ADDR(hw, addr);
 950
 951                 hw->channel_change_time = 1;
 952                 hw->queues = 4;
 953                 hw->wiphy->interface_modes =
 954                         BIT(NL80211_IFTYPE_STATION) |
 955                         BIT(NL80211_IFTYPE_AP) |
 956                         BIT(NL80211_IFTYPE_MESH_POINT);
 957
 958                 hw->flags = IEEE80211_HW_MFP_CAPABLE;
 959
 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);
 963
 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));
 969
 970                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
 971                         struct ieee80211_supported_band *sband = &data->bands[band];
 972                         switch (band) {
 973                         case IEEE80211_BAND_2GHZ:
 974                                 sband->channels = data->channels_2ghz;
 975                                 sband->n_channels =
 976                                         ARRAY_SIZE(hwsim_channels_2ghz);
 977                                 break;
 978                         case IEEE80211_BAND_5GHZ:
 979                                 sband->channels = data->channels_5ghz;
 980                                 sband->n_channels =
 981                                         ARRAY_SIZE(hwsim_channels_5ghz);
 982                                 break;
 983                         default:
 984                                 break;
 985                         }
 986
 987                         sband->bitrates = data->rates;
 988                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
 989
 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;
1002
1003                         hw->wiphy->bands[band] = sband;
1004                 }
1005                 /* By default all radios are belonging to the first group */
1006                 data->group = 1;
1007
1008                 /* Work to be done prior to ieee80211_register_hw() */
1009                 switch (regtest) {
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:
1014                         /*
1015                          * Nothing to be done for driver regulatory domain
1016                          * hints prior to ieee80211_register_hw()
1017                          */
1018                         break;
1019                 case HWSIM_REGTEST_WORLD_ROAM:
1020                         if (i == 0) {
1021                                 hw->wiphy->custom_regulatory = true;
1022                                 wiphy_apply_custom_regulatory(hw->wiphy,
1023                                         &hwsim_world_regdom_custom_01);
1024                         }
1025                         break;
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);
1030                         break;
1031                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1032                         if (i == 0) {
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);
1040                         }
1041                         break;
1042                 case HWSIM_REGTEST_STRICT_ALL:
1043                         hw->wiphy->strict_regulatory = true;
1044                         break;
1045                 case HWSIM_REGTEST_STRICT_FOLLOW:
1046                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1047                         if (i == 0)
1048                                 hw->wiphy->strict_regulatory = true;
1049                         break;
1050                 case HWSIM_REGTEST_ALL:
1051                         if (i == 0) {
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);
1059                         } else if (i == 4)
1060                                 hw->wiphy->strict_regulatory = true;
1061                         break;
1062                 default:
1063                         break;
1064                 }
1065
1066                 /* give the regulatory workqueue a chance to run */
1067                 if (regtest)
1068                         schedule_timeout_interruptible(1);
1069                 err = ieee80211_register_hw(hw);
1070                 if (err < 0) {
1071                         printk(KERN_DEBUG "mac80211_hwsim: "
1072                                "ieee80211_register_hw failed (%d)\n", err);
1073                         goto failed_hw;
1074                 }
1075
1076                 /* Work to be done after to ieee80211_register_hw() */
1077                 switch (regtest) {
1078                 case HWSIM_REGTEST_WORLD_ROAM:
1079                 case HWSIM_REGTEST_DISABLED:
1080                         break;
1081                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1082                         if (!i)
1083                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1084                         break;
1085                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1086                 case HWSIM_REGTEST_STRICT_ALL:
1087                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1088                         break;
1089                 case HWSIM_REGTEST_DIFF_COUNTRY:
1090                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1091                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1092                         break;
1093                 case HWSIM_REGTEST_CUSTOM_WORLD:
1094                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1095                         /*
1096                          * Nothing to be done for custom world regulatory
1097                          * domains after to ieee80211_register_hw
1098                          */
1099                         break;
1100                 case HWSIM_REGTEST_STRICT_FOLLOW:
1101                         if (i == 0)
1102                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1103                         break;
1104                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1105                         if (i == 0)
1106                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1107                         else if (i == 1)
1108                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1109                         break;
1110                 case HWSIM_REGTEST_ALL:
1111                         if (i == 2)
1112                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1113                         else if (i == 3)
1114                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1115                         else if (i == 4)
1116                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1117                         break;
1118                 default:
1119                         break;
1120                 }
1121
1122                 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1123                        wiphy_name(hw->wiphy),
1124                        hw->wiphy->perm_addr);
1125
1126                 data->debugfs = debugfs_create_dir("hwsim",
1127                                                    hw->wiphy->debugfsdir);
1128                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1129                                                        data->debugfs, data,
1130                                                        &hwsim_fops_ps);
1131                 data->debugfs_group = debugfs_create_file("group", 0666,
1132                                                         data->debugfs, data,
1133                                                         &hwsim_fops_group);
1134
1135                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1136                             (unsigned long) hw);
1137
1138                 list_add_tail(&data->list, &hwsim_radios);
1139         }
1140
1141         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1142         if (hwsim_mon == NULL)
1143                 goto failed;
1144
1145         rtnl_lock();
1146
1147         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1148         if (err < 0)
1149                 goto failed_mon;
1150
1151
1152         err = register_netdevice(hwsim_mon);
1153         if (err < 0)
1154                 goto failed_mon;
1155
1156         rtnl_unlock();
1157
1158         return 0;
1159
1160 failed_mon:
1161         rtnl_unlock();
1162         free_netdev(hwsim_mon);
1163         mac80211_hwsim_free();
1164         return err;
1165
1166 failed_hw:
1167         device_unregister(data->dev);
1168 failed_drvdata:
1169         ieee80211_free_hw(hw);
1170 failed:
1171         mac80211_hwsim_free();
1172         return err;
1173 }
1174
1175
1176 static void __exit exit_mac80211_hwsim(void)
1177 {
1178         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1179
1180         unregister_netdev(hwsim_mon);
1181         mac80211_hwsim_free();
1182 }
1183
1184
1185 module_init(init_mac80211_hwsim);
1186 module_exit(exit_mac80211_hwsim);