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 mac_address addresses[2];
 285
 286         struct ieee80211_channel *channel;
 287         unsigned long beacon_int; /* in jiffies unit */
 288         unsigned int rx_filter;
 289         bool started, idle;
 290         struct timer_list beacon_timer;
 291         enum ps_mode {
 292                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 293         } ps;
 294         bool ps_poll_pending;
 295         struct dentry *debugfs;
 296         struct dentry *debugfs_ps;
 297
 298         /*
 299          * Only radios in the same group can communicate together (the
 300          * channel has to match too). Each bit represents a group. A
 301          * radio can be in more then one group.
 302          */
 303         u64 group;
 304         struct dentry *debugfs_group;
 305 };
 306
 307
 308 struct hwsim_radiotap_hdr {
 309         struct ieee80211_radiotap_header hdr;
 310         u8 rt_flags;
 311         u8 rt_rate;
 312         __le16 rt_channel;
 313         __le16 rt_chbitmask;
 314 } __attribute__ ((packed));
 315
 316
 317 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 318                                         struct net_device *dev)
 319 {
 320         /* TODO: allow packet injection */
 321         dev_kfree_skb(skb);
 322         return NETDEV_TX_OK;
 323 }
 324
 325
 326 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 327                                       struct sk_buff *tx_skb)
 328 {
 329         struct mac80211_hwsim_data *data = hw->priv;
 330         struct sk_buff *skb;
 331         struct hwsim_radiotap_hdr *hdr;
 332         u16 flags;
 333         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 334         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 335
 336         if (!netif_running(hwsim_mon))
 337                 return;
 338
 339         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 340         if (skb == NULL)
 341                 return;
 342
 343         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 344         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 345         hdr->hdr.it_pad = 0;
 346         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 347         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 348                                           (1 << IEEE80211_RADIOTAP_RATE) |
 349                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 350         hdr->rt_flags = 0;
 351         hdr->rt_rate = txrate->bitrate / 5;
 352         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 353         flags = IEEE80211_CHAN_2GHZ;
 354         if (txrate->flags & IEEE80211_RATE_ERP_G)
 355                 flags |= IEEE80211_CHAN_OFDM;
 356         else
 357                 flags |= IEEE80211_CHAN_CCK;
 358         hdr->rt_chbitmask = cpu_to_le16(flags);
 359
 360         skb->dev = hwsim_mon;
 361         skb_set_mac_header(skb, 0);
 362         skb->ip_summed = CHECKSUM_UNNECESSARY;
 363         skb->pkt_type = PACKET_OTHERHOST;
 364         skb->protocol = htons(ETH_P_802_2);
 365         memset(skb->cb, 0, sizeof(skb->cb));
 366         netif_rx(skb);
 367 }
 368
 369
 370 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 371 {
 372         struct mac80211_hwsim_data *data = hw->priv;
 373         struct sk_buff *skb;
 374         struct hwsim_radiotap_hdr *hdr;
 375         u16 flags;
 376         struct ieee80211_hdr *hdr11;
 377
 378         if (!netif_running(hwsim_mon))
 379                 return;
 380
 381         skb = dev_alloc_skb(100);
 382         if (skb == NULL)
 383                 return;
 384
 385         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 386         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 387         hdr->hdr.it_pad = 0;
 388         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 389         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 390                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 391         hdr->rt_flags = 0;
 392         hdr->rt_rate = 0;
 393         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 394         flags = IEEE80211_CHAN_2GHZ;
 395         hdr->rt_chbitmask = cpu_to_le16(flags);
 396
 397         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 398         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 399                                            IEEE80211_STYPE_ACK);
 400         hdr11->duration_id = cpu_to_le16(0);
 401         memcpy(hdr11->addr1, addr, ETH_ALEN);
 402
 403         skb->dev = hwsim_mon;
 404         skb_set_mac_header(skb, 0);
 405         skb->ip_summed = CHECKSUM_UNNECESSARY;
 406         skb->pkt_type = PACKET_OTHERHOST;
 407         skb->protocol = htons(ETH_P_802_2);
 408         memset(skb->cb, 0, sizeof(skb->cb));
 409         netif_rx(skb);
 410 }
 411
 412
 413 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 414                            struct sk_buff *skb)
 415 {
 416         switch (data->ps) {
 417         case PS_DISABLED:
 418                 return true;
 419         case PS_ENABLED:
 420                 return false;
 421         case PS_AUTO_POLL:
 422                 /* TODO: accept (some) Beacons by default and other frames only
 423                  * if pending PS-Poll has been sent */
 424                 return true;
 425         case PS_MANUAL_POLL:
 426                 /* Allow unicast frames to own address if there is a pending
 427                  * PS-Poll */
 428                 if (data->ps_poll_pending &&
 429                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 430                            ETH_ALEN) == 0) {
 431                         data->ps_poll_pending = false;
 432                         return true;
 433                 }
 434                 return false;
 435         }
 436
 437         return true;
 438 }
 439
 440
 441 struct mac80211_hwsim_addr_match_data {
 442         bool ret;
 443         const u8 *addr;
 444 };
 445
 446 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 447                                      struct ieee80211_vif *vif)
 448 {
 449         struct mac80211_hwsim_addr_match_data *md = data;
 450         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 451                 md->ret = true;
 452 }
 453
 454
 455 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 456                                       const u8 *addr)
 457 {
 458         struct mac80211_hwsim_addr_match_data md;
 459
 460         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 461                 return true;
 462
 463         md.ret = false;
 464         md.addr = addr;
 465         ieee80211_iterate_active_interfaces_atomic(data->hw,
 466                                                    mac80211_hwsim_addr_iter,
 467                                                    &md);
 468
 469         return md.ret;
 470 }
 471
 472
 473 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 474                                     struct sk_buff *skb)
 475 {
 476         struct mac80211_hwsim_data *data = hw->priv, *data2;
 477         bool ack = false;
 478         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 479         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 480         struct ieee80211_rx_status rx_status;
 481
 482         if (data->idle) {
 483                 printk(KERN_DEBUG "%s: Trying to TX when idle - reject\n",
 484                        wiphy_name(hw->wiphy));
 485                 return false;
 486         }
 487
 488         memset(&rx_status, 0, sizeof(rx_status));
 489         /* TODO: set mactime */
 490         rx_status.freq = data->channel->center_freq;
 491         rx_status.band = data->channel->band;
 492         rx_status.rate_idx = info->control.rates[0].idx;
 493         /* TODO: simulate real signal strength (and optional packet loss) */
 494         rx_status.signal = -50;
 495
 496         if (data->ps != PS_DISABLED)
 497                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 498
 499         /* release the skb's source info */
 500         skb_orphan(skb);
 501         skb_dst_drop(skb);
 502         skb->mark = 0;
 503         secpath_reset(skb);
 504         nf_reset(skb);
 505
 506         /* Copy skb to all enabled radios that are on the current frequency */
 507         spin_lock(&hwsim_radio_lock);
 508         list_for_each_entry(data2, &hwsim_radios, list) {
 509                 struct sk_buff *nskb;
 510
 511                 if (data == data2)
 512                         continue;
 513
 514                 if (data2->idle || !data2->started ||
 515                     !hwsim_ps_rx_ok(data2, skb) ||
 516                     !data->channel || !data2->channel ||
 517                     data->channel->center_freq != data2->channel->center_freq ||
 518                     !(data->group & data2->group))
 519                         continue;
 520
 521                 nskb = skb_copy(skb, GFP_ATOMIC);
 522                 if (nskb == NULL)
 523                         continue;
 524
 525                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 526                         ack = true;
 527                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 528                 ieee80211_rx_irqsafe(data2->hw, nskb);
 529         }
 530         spin_unlock(&hwsim_radio_lock);
 531
 532         return ack;
 533 }
 534
 535
 536 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 537 {
 538         bool ack;
 539         struct ieee80211_tx_info *txi;
 540
 541         mac80211_hwsim_monitor_rx(hw, skb);
 542
 543         if (skb->len < 10) {
 544                 /* Should not happen; just a sanity check for addr1 use */
 545                 dev_kfree_skb(skb);
 546                 return NETDEV_TX_OK;
 547         }
 548
 549         ack = mac80211_hwsim_tx_frame(hw, skb);
 550         if (ack && skb->len >= 16) {
 551                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 552                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 553         }
 554
 555         txi = IEEE80211_SKB_CB(skb);
 556
 557         if (txi->control.vif)
 558                 hwsim_check_magic(txi->control.vif);
 559         if (txi->control.sta)
 560                 hwsim_check_sta_magic(txi->control.sta);
 561
 562         ieee80211_tx_info_clear_status(txi);
 563         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 564                 txi->flags |= IEEE80211_TX_STAT_ACK;
 565         ieee80211_tx_status_irqsafe(hw, skb);
 566         return NETDEV_TX_OK;
 567 }
 568
 569
 570 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 571 {
 572         struct mac80211_hwsim_data *data = hw->priv;
 573         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 574         data->started = 1;
 575         return 0;
 576 }
 577
 578
 579 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 580 {
 581         struct mac80211_hwsim_data *data = hw->priv;
 582         data->started = 0;
 583         del_timer(&data->beacon_timer);
 584         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 585 }
 586
 587
 588 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 589                                         struct ieee80211_vif *vif)
 590 {
 591         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 592                wiphy_name(hw->wiphy), __func__, vif->type,
 593                vif->addr);
 594         hwsim_set_magic(vif);
 595         return 0;
 596 }
 597
 598
 599 static void mac80211_hwsim_remove_interface(
 600         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 601 {
 602         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 603                wiphy_name(hw->wiphy), __func__, vif->type,
 604                vif->addr);
 605         hwsim_check_magic(vif);
 606         hwsim_clear_magic(vif);
 607 }
 608
 609
 610 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 611                                      struct ieee80211_vif *vif)
 612 {
 613         struct ieee80211_hw *hw = arg;
 614         struct sk_buff *skb;
 615         struct ieee80211_tx_info *info;
 616
 617         hwsim_check_magic(vif);
 618
 619         if (vif->type != NL80211_IFTYPE_AP &&
 620             vif->type != NL80211_IFTYPE_MESH_POINT)
 621                 return;
 622
 623         skb = ieee80211_beacon_get(hw, vif);
 624         if (skb == NULL)
 625                 return;
 626         info = IEEE80211_SKB_CB(skb);
 627
 628         mac80211_hwsim_monitor_rx(hw, skb);
 629         mac80211_hwsim_tx_frame(hw, skb);
 630         dev_kfree_skb(skb);
 631 }
 632
 633
 634 static void mac80211_hwsim_beacon(unsigned long arg)
 635 {
 636         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 637         struct mac80211_hwsim_data *data = hw->priv;
 638
 639         if (!data->started)
 640                 return;
 641
 642         ieee80211_iterate_active_interfaces_atomic(
 643                 hw, mac80211_hwsim_beacon_tx, hw);
 644
 645         data->beacon_timer.expires = jiffies + data->beacon_int;
 646         add_timer(&data->beacon_timer);
 647 }
 648
 649
 650 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 651 {
 652         struct mac80211_hwsim_data *data = hw->priv;
 653         struct ieee80211_conf *conf = &hw->conf;
 654         static const char *chantypes[4] = {
 655                 [NL80211_CHAN_NO_HT] = "noht",
 656                 [NL80211_CHAN_HT20] = "ht20",
 657                 [NL80211_CHAN_HT40MINUS] = "ht40-",
 658                 [NL80211_CHAN_HT40PLUS] = "ht40+",
 659         };
 660         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 661                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 662                 [IEEE80211_SMPS_OFF] = "off",
 663                 [IEEE80211_SMPS_STATIC] = "static",
 664                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 665         };
 666
 667         printk(KERN_DEBUG "%s:%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 668                wiphy_name(hw->wiphy), __func__,
 669                conf->channel->center_freq,
 670                chantypes[conf->channel_type],
 671                !!(conf->flags & IEEE80211_CONF_IDLE),
 672                !!(conf->flags & IEEE80211_CONF_PS),
 673                smps_modes[conf->smps_mode]);
 674
 675         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 676
 677         data->channel = conf->channel;
 678         if (!data->started || !data->beacon_int)
 679                 del_timer(&data->beacon_timer);
 680         else
 681                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 682
 683         return 0;
 684 }
 685
 686
 687 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 688                                             unsigned int changed_flags,
 689                                             unsigned int *total_flags,u64 multicast)
 690 {
 691         struct mac80211_hwsim_data *data = hw->priv;
 692
 693         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 694
 695         data->rx_filter = 0;
 696         if (*total_flags & FIF_PROMISC_IN_BSS)
 697                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 698         if (*total_flags & FIF_ALLMULTI)
 699                 data->rx_filter |= FIF_ALLMULTI;
 700
 701         *total_flags = data->rx_filter;
 702 }
 703
 704 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 705                                             struct ieee80211_vif *vif,
 706                                             struct ieee80211_bss_conf *info,
 707                                             u32 changed)
 708 {
 709         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 710         struct mac80211_hwsim_data *data = hw->priv;
 711
 712         hwsim_check_magic(vif);
 713
 714         printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
 715                wiphy_name(hw->wiphy), __func__, changed);
 716
 717         if (changed & BSS_CHANGED_BSSID) {
 718                 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
 719                        wiphy_name(hw->wiphy), __func__,
 720                        info->bssid);
 721                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 722         }
 723
 724         if (changed & BSS_CHANGED_ASSOC) {
 725                 printk(KERN_DEBUG "  %s: ASSOC: assoc=%d aid=%d\n",
 726                        wiphy_name(hw->wiphy), info->assoc, info->aid);
 727                 vp->assoc = info->assoc;
 728                 vp->aid = info->aid;
 729         }
 730
 731         if (changed & BSS_CHANGED_BEACON_INT) {
 732                 printk(KERN_DEBUG "  %s: BCNINT: %d\n",
 733                        wiphy_name(hw->wiphy), info->beacon_int);
 734                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 735                 if (WARN_ON(!data->beacon_int))
 736                         data->beacon_int = 1;
 737                 if (data->started)
 738                         mod_timer(&data->beacon_timer,
 739                                   jiffies + data->beacon_int);
 740         }
 741
 742         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 743                 printk(KERN_DEBUG "  %s: ERP_CTS_PROT: %d\n",
 744                        wiphy_name(hw->wiphy), info->use_cts_prot);
 745         }
 746
 747         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 748                 printk(KERN_DEBUG "  %s: ERP_PREAMBLE: %d\n",
 749                        wiphy_name(hw->wiphy), info->use_short_preamble);
 750         }
 751
 752         if (changed & BSS_CHANGED_ERP_SLOT) {
 753                 printk(KERN_DEBUG "  %s: ERP_SLOT: %d\n",
 754                        wiphy_name(hw->wiphy), info->use_short_slot);
 755         }
 756
 757         if (changed & BSS_CHANGED_HT) {
 758                 printk(KERN_DEBUG "  %s: HT: op_mode=0x%x\n",
 759                        wiphy_name(hw->wiphy),
 760                        info->ht_operation_mode);
 761         }
 762
 763         if (changed & BSS_CHANGED_BASIC_RATES) {
 764                 printk(KERN_DEBUG "  %s: BASIC_RATES: 0x%llx\n",
 765                        wiphy_name(hw->wiphy),
 766                        (unsigned long long) info->basic_rates);
 767         }
 768 }
 769
 770 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 771                                       struct ieee80211_vif *vif,
 772                                       enum sta_notify_cmd cmd,
 773                                       struct ieee80211_sta *sta)
 774 {
 775         hwsim_check_magic(vif);
 776         switch (cmd) {
 777         case STA_NOTIFY_ADD:
 778                 hwsim_set_sta_magic(sta);
 779                 break;
 780         case STA_NOTIFY_REMOVE:
 781                 hwsim_clear_sta_magic(sta);
 782                 break;
 783         case STA_NOTIFY_SLEEP:
 784         case STA_NOTIFY_AWAKE:
 785                 /* TODO: make good use of these flags */
 786                 break;
 787         }
 788 }
 789
 790 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 791                                   struct ieee80211_sta *sta,
 792                                   bool set)
 793 {
 794         hwsim_check_sta_magic(sta);
 795         return 0;
 796 }
 797
 798 static int mac80211_hwsim_conf_tx(
 799         struct ieee80211_hw *hw, u16 queue,
 800         const struct ieee80211_tx_queue_params *params)
 801 {
 802         printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
 803                "aifs=%d)\n",
 804                wiphy_name(hw->wiphy), __func__, queue,
 805                params->txop, params->cw_min, params->cw_max, params->aifs);
 806         return 0;
 807 }
 808
 809 #ifdef CONFIG_NL80211_TESTMODE
 810 /*
 811  * This section contains example code for using netlink
 812  * attributes with the testmode command in nl80211.
 813  */
 814
 815 /* These enums need to be kept in sync with userspace */
 816 enum hwsim_testmode_attr {
 817         __HWSIM_TM_ATTR_INVALID = 0,
 818         HWSIM_TM_ATTR_CMD       = 1,
 819         HWSIM_TM_ATTR_PS        = 2,
 820
 821         /* keep last */
 822         __HWSIM_TM_ATTR_AFTER_LAST,
 823         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
 824 };
 825
 826 enum hwsim_testmode_cmd {
 827         HWSIM_TM_CMD_SET_PS             = 0,
 828         HWSIM_TM_CMD_GET_PS             = 1,
 829 };
 830
 831 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
 832         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
 833         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
 834 };
 835
 836 static int hwsim_fops_ps_write(void *dat, u64 val);
 837
 838 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
 839                                        void *data, int len)
 840 {
 841         struct mac80211_hwsim_data *hwsim = hw->priv;
 842         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
 843         struct sk_buff *skb;
 844         int err, ps;
 845
 846         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
 847                         hwsim_testmode_policy);
 848         if (err)
 849                 return err;
 850
 851         if (!tb[HWSIM_TM_ATTR_CMD])
 852                 return -EINVAL;
 853
 854         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
 855         case HWSIM_TM_CMD_SET_PS:
 856                 if (!tb[HWSIM_TM_ATTR_PS])
 857                         return -EINVAL;
 858                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
 859                 return hwsim_fops_ps_write(hwsim, ps);
 860         case HWSIM_TM_CMD_GET_PS:
 861                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
 862                                                 nla_total_size(sizeof(u32)));
 863                 if (!skb)
 864                         return -ENOMEM;
 865                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
 866                 return cfg80211_testmode_reply(skb);
 867         default:
 868                 return -EOPNOTSUPP;
 869         }
 870
 871  nla_put_failure:
 872         kfree_skb(skb);
 873         return -ENOBUFS;
 874 }
 875 #endif
 876
 877 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
 878                                        struct ieee80211_vif *vif,
 879                                        enum ieee80211_ampdu_mlme_action action,
 880                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 881 {
 882         switch (action) {
 883         case IEEE80211_AMPDU_TX_START:
 884                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 885                 break;
 886         case IEEE80211_AMPDU_TX_STOP:
 887                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 888                 break;
 889         case IEEE80211_AMPDU_TX_OPERATIONAL:
 890                 break;
 891         case IEEE80211_AMPDU_RX_START:
 892         case IEEE80211_AMPDU_RX_STOP:
 893                 break;
 894         default:
 895                 return -EOPNOTSUPP;
 896         }
 897
 898         return 0;
 899 }
 900
 901 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
 902 {
 903         /*
 904          * In this special case, there's nothing we need to
 905          * do because hwsim does transmission synchronously.
 906          * In the future, when it does transmissions via
 907          * userspace, we may need to do something.
 908          */
 909 }
 910
 911
 912 static const struct ieee80211_ops mac80211_hwsim_ops =
 913 {
 914         .tx = mac80211_hwsim_tx,
 915         .start = mac80211_hwsim_start,
 916         .stop = mac80211_hwsim_stop,
 917         .add_interface = mac80211_hwsim_add_interface,
 918         .remove_interface = mac80211_hwsim_remove_interface,
 919         .config = mac80211_hwsim_config,
 920         .configure_filter = mac80211_hwsim_configure_filter,
 921         .bss_info_changed = mac80211_hwsim_bss_info_changed,
 922         .sta_notify = mac80211_hwsim_sta_notify,
 923         .set_tim = mac80211_hwsim_set_tim,
 924         .conf_tx = mac80211_hwsim_conf_tx,
 925         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
 926         .ampdu_action = mac80211_hwsim_ampdu_action,
 927         .flush = mac80211_hwsim_flush,
 928 };
 929
 930
 931 static void mac80211_hwsim_free(void)
 932 {
 933         struct list_head tmplist, *i, *tmp;
 934         struct mac80211_hwsim_data *data, *tmpdata;
 935
 936         INIT_LIST_HEAD(&tmplist);
 937
 938         spin_lock_bh(&hwsim_radio_lock);
 939         list_for_each_safe(i, tmp, &hwsim_radios)
 940                 list_move(i, &tmplist);
 941         spin_unlock_bh(&hwsim_radio_lock);
 942
 943         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
 944                 debugfs_remove(data->debugfs_group);
 945                 debugfs_remove(data->debugfs_ps);
 946                 debugfs_remove(data->debugfs);
 947                 ieee80211_unregister_hw(data->hw);
 948                 device_unregister(data->dev);
 949                 ieee80211_free_hw(data->hw);
 950         }
 951         class_destroy(hwsim_class);
 952 }
 953
 954
 955 static struct device_driver mac80211_hwsim_driver = {
 956         .name = "mac80211_hwsim"
 957 };
 958
 959 static const struct net_device_ops hwsim_netdev_ops = {
 960         .ndo_start_xmit         = hwsim_mon_xmit,
 961         .ndo_change_mtu         = eth_change_mtu,
 962         .ndo_set_mac_address    = eth_mac_addr,
 963         .ndo_validate_addr      = eth_validate_addr,
 964 };
 965
 966 static void hwsim_mon_setup(struct net_device *dev)
 967 {
 968         dev->netdev_ops = &hwsim_netdev_ops;
 969         dev->destructor = free_netdev;
 970         ether_setup(dev);
 971         dev->tx_queue_len = 0;
 972         dev->type = ARPHRD_IEEE80211_RADIOTAP;
 973         memset(dev->dev_addr, 0, ETH_ALEN);
 974         dev->dev_addr[0] = 0x12;
 975 }
 976
 977
 978 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 979 {
 980         struct mac80211_hwsim_data *data = dat;
 981         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 982         struct sk_buff *skb;
 983         struct ieee80211_pspoll *pspoll;
 984
 985         if (!vp->assoc)
 986                 return;
 987
 988         printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
 989                wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
 990
 991         skb = dev_alloc_skb(sizeof(*pspoll));
 992         if (!skb)
 993                 return;
 994         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 995         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 996                                             IEEE80211_STYPE_PSPOLL |
 997                                             IEEE80211_FCTL_PM);
 998         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 999         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1000         memcpy(pspoll->ta, mac, ETH_ALEN);
1001         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1002                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1003         dev_kfree_skb(skb);
1004 }
1005
1006
1007 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1008                                 struct ieee80211_vif *vif, int ps)
1009 {
1010         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1011         struct sk_buff *skb;
1012         struct ieee80211_hdr *hdr;
1013
1014         if (!vp->assoc)
1015                 return;
1016
1017         printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
1018                wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
1019
1020         skb = dev_alloc_skb(sizeof(*hdr));
1021         if (!skb)
1022                 return;
1023         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1024         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1025                                          IEEE80211_STYPE_NULLFUNC |
1026                                          (ps ? IEEE80211_FCTL_PM : 0));
1027         hdr->duration_id = cpu_to_le16(0);
1028         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1029         memcpy(hdr->addr2, mac, ETH_ALEN);
1030         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1031         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1032                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1033         dev_kfree_skb(skb);
1034 }
1035
1036
1037 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1038                                    struct ieee80211_vif *vif)
1039 {
1040         struct mac80211_hwsim_data *data = dat;
1041         hwsim_send_nullfunc(data, mac, vif, 1);
1042 }
1043
1044
1045 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1046                                       struct ieee80211_vif *vif)
1047 {
1048         struct mac80211_hwsim_data *data = dat;
1049         hwsim_send_nullfunc(data, mac, vif, 0);
1050 }
1051
1052
1053 static int hwsim_fops_ps_read(void *dat, u64 *val)
1054 {
1055         struct mac80211_hwsim_data *data = dat;
1056         *val = data->ps;
1057         return 0;
1058 }
1059
1060 static int hwsim_fops_ps_write(void *dat, u64 val)
1061 {
1062         struct mac80211_hwsim_data *data = dat;
1063         enum ps_mode old_ps;
1064
1065         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1066             val != PS_MANUAL_POLL)
1067                 return -EINVAL;
1068
1069         old_ps = data->ps;
1070         data->ps = val;
1071
1072         if (val == PS_MANUAL_POLL) {
1073                 ieee80211_iterate_active_interfaces(data->hw,
1074                                                     hwsim_send_ps_poll, data);
1075                 data->ps_poll_pending = true;
1076         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1077                 ieee80211_iterate_active_interfaces(data->hw,
1078                                                     hwsim_send_nullfunc_ps,
1079                                                     data);
1080         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1081                 ieee80211_iterate_active_interfaces(data->hw,
1082                                                     hwsim_send_nullfunc_no_ps,
1083                                                     data);
1084         }
1085
1086         return 0;
1087 }
1088
1089 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1090                         "%llu\n");
1091
1092
1093 static int hwsim_fops_group_read(void *dat, u64 *val)
1094 {
1095         struct mac80211_hwsim_data *data = dat;
1096         *val = data->group;
1097         return 0;
1098 }
1099
1100 static int hwsim_fops_group_write(void *dat, u64 val)
1101 {
1102         struct mac80211_hwsim_data *data = dat;
1103         data->group = val;
1104         return 0;
1105 }
1106
1107 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1108                         hwsim_fops_group_read, hwsim_fops_group_write,
1109                         "%llx\n");
1110
1111 static int __init init_mac80211_hwsim(void)
1112 {
1113         int i, err = 0;
1114         u8 addr[ETH_ALEN];
1115         struct mac80211_hwsim_data *data;
1116         struct ieee80211_hw *hw;
1117         enum ieee80211_band band;
1118
1119         if (radios < 1 || radios > 100)
1120                 return -EINVAL;
1121
1122         spin_lock_init(&hwsim_radio_lock);
1123         INIT_LIST_HEAD(&hwsim_radios);
1124
1125         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1126         if (IS_ERR(hwsim_class))
1127                 return PTR_ERR(hwsim_class);
1128
1129         memset(addr, 0, ETH_ALEN);
1130         addr[0] = 0x02;
1131
1132         for (i = 0; i < radios; i++) {
1133                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1134                        i);
1135                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1136                 if (!hw) {
1137                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1138                                "failed\n");
1139                         err = -ENOMEM;
1140                         goto failed;
1141                 }
1142                 data = hw->priv;
1143                 data->hw = hw;
1144
1145                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1146                                           "hwsim%d", i);
1147                 if (IS_ERR(data->dev)) {
1148                         printk(KERN_DEBUG
1149                                "mac80211_hwsim: device_create "
1150                                "failed (%ld)\n", PTR_ERR(data->dev));
1151                         err = -ENOMEM;
1152                         goto failed_drvdata;
1153                 }
1154                 data->dev->driver = &mac80211_hwsim_driver;
1155
1156                 SET_IEEE80211_DEV(hw, data->dev);
1157                 addr[3] = i >> 8;
1158                 addr[4] = i;
1159                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1160                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1161                 data->addresses[1].addr[0] |= 0x40;
1162                 hw->wiphy->n_addresses = 2;
1163                 hw->wiphy->addresses = data->addresses;
1164
1165                 hw->channel_change_time = 1;
1166                 hw->queues = 4;
1167                 hw->wiphy->interface_modes =
1168                         BIT(NL80211_IFTYPE_STATION) |
1169                         BIT(NL80211_IFTYPE_AP) |
1170                         BIT(NL80211_IFTYPE_MESH_POINT);
1171
1172                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1173                             IEEE80211_HW_SIGNAL_DBM |
1174                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1175                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;
1176
1177                 /* ask mac80211 to reserve space for magic */
1178                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1179                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1180
1181                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1182                         sizeof(hwsim_channels_2ghz));
1183                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1184                         sizeof(hwsim_channels_5ghz));
1185                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1186
1187                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1188                         struct ieee80211_supported_band *sband = &data->bands[band];
1189                         switch (band) {
1190                         case IEEE80211_BAND_2GHZ:
1191                                 sband->channels = data->channels_2ghz;
1192                                 sband->n_channels =
1193                                         ARRAY_SIZE(hwsim_channels_2ghz);
1194                                 sband->bitrates = data->rates;
1195                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1196                                 break;
1197                         case IEEE80211_BAND_5GHZ:
1198                                 sband->channels = data->channels_5ghz;
1199                                 sband->n_channels =
1200                                         ARRAY_SIZE(hwsim_channels_5ghz);
1201                                 sband->bitrates = data->rates + 4;
1202                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1203                                 break;
1204                         default:
1205                                 break;
1206                         }
1207
1208                         sband->ht_cap.ht_supported = true;
1209                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1210                                 IEEE80211_HT_CAP_GRN_FLD |
1211                                 IEEE80211_HT_CAP_SGI_40 |
1212                                 IEEE80211_HT_CAP_DSSSCCK40;
1213                         sband->ht_cap.ampdu_factor = 0x3;
1214                         sband->ht_cap.ampdu_density = 0x6;
1215                         memset(&sband->ht_cap.mcs, 0,
1216                                sizeof(sband->ht_cap.mcs));
1217                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1218                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1219                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1220
1221                         hw->wiphy->bands[band] = sband;
1222                 }
1223                 /* By default all radios are belonging to the first group */
1224                 data->group = 1;
1225
1226                 /* Work to be done prior to ieee80211_register_hw() */
1227                 switch (regtest) {
1228                 case HWSIM_REGTEST_DISABLED:
1229                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1230                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1231                 case HWSIM_REGTEST_DIFF_COUNTRY:
1232                         /*
1233                          * Nothing to be done for driver regulatory domain
1234                          * hints prior to ieee80211_register_hw()
1235                          */
1236                         break;
1237                 case HWSIM_REGTEST_WORLD_ROAM:
1238                         if (i == 0) {
1239                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1240                                 wiphy_apply_custom_regulatory(hw->wiphy,
1241                                         &hwsim_world_regdom_custom_01);
1242                         }
1243                         break;
1244                 case HWSIM_REGTEST_CUSTOM_WORLD:
1245                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1246                         wiphy_apply_custom_regulatory(hw->wiphy,
1247                                 &hwsim_world_regdom_custom_01);
1248                         break;
1249                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1250                         if (i == 0) {
1251                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1252                                 wiphy_apply_custom_regulatory(hw->wiphy,
1253                                         &hwsim_world_regdom_custom_01);
1254                         } else if (i == 1) {
1255                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1256                                 wiphy_apply_custom_regulatory(hw->wiphy,
1257                                         &hwsim_world_regdom_custom_02);
1258                         }
1259                         break;
1260                 case HWSIM_REGTEST_STRICT_ALL:
1261                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1262                         break;
1263                 case HWSIM_REGTEST_STRICT_FOLLOW:
1264                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1265                         if (i == 0)
1266                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1267                         break;
1268                 case HWSIM_REGTEST_ALL:
1269                         if (i == 0) {
1270                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1271                                 wiphy_apply_custom_regulatory(hw->wiphy,
1272                                         &hwsim_world_regdom_custom_01);
1273                         } else if (i == 1) {
1274                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1275                                 wiphy_apply_custom_regulatory(hw->wiphy,
1276                                         &hwsim_world_regdom_custom_02);
1277                         } else if (i == 4)
1278                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1279                         break;
1280                 default:
1281                         break;
1282                 }
1283
1284                 /* give the regulatory workqueue a chance to run */
1285                 if (regtest)
1286                         schedule_timeout_interruptible(1);
1287                 err = ieee80211_register_hw(hw);
1288                 if (err < 0) {
1289                         printk(KERN_DEBUG "mac80211_hwsim: "
1290                                "ieee80211_register_hw failed (%d)\n", err);
1291                         goto failed_hw;
1292                 }
1293
1294                 /* Work to be done after to ieee80211_register_hw() */
1295                 switch (regtest) {
1296                 case HWSIM_REGTEST_WORLD_ROAM:
1297                 case HWSIM_REGTEST_DISABLED:
1298                         break;
1299                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1300                         if (!i)
1301                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1302                         break;
1303                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1304                 case HWSIM_REGTEST_STRICT_ALL:
1305                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1306                         break;
1307                 case HWSIM_REGTEST_DIFF_COUNTRY:
1308                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1309                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1310                         break;
1311                 case HWSIM_REGTEST_CUSTOM_WORLD:
1312                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1313                         /*
1314                          * Nothing to be done for custom world regulatory
1315                          * domains after to ieee80211_register_hw
1316                          */
1317                         break;
1318                 case HWSIM_REGTEST_STRICT_FOLLOW:
1319                         if (i == 0)
1320                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1321                         break;
1322                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1323                         if (i == 0)
1324                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1325                         else if (i == 1)
1326                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1327                         break;
1328                 case HWSIM_REGTEST_ALL:
1329                         if (i == 2)
1330                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1331                         else if (i == 3)
1332                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1333                         else if (i == 4)
1334                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1335                         break;
1336                 default:
1337                         break;
1338                 }
1339
1340                 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1341                        wiphy_name(hw->wiphy),
1342                        hw->wiphy->perm_addr);
1343
1344                 data->debugfs = debugfs_create_dir("hwsim",
1345                                                    hw->wiphy->debugfsdir);
1346                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1347                                                        data->debugfs, data,
1348                                                        &hwsim_fops_ps);
1349                 data->debugfs_group = debugfs_create_file("group", 0666,
1350                                                         data->debugfs, data,
1351                                                         &hwsim_fops_group);
1352
1353                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1354                             (unsigned long) hw);
1355
1356                 list_add_tail(&data->list, &hwsim_radios);
1357         }
1358
1359         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1360         if (hwsim_mon == NULL)
1361                 goto failed;
1362
1363         rtnl_lock();
1364
1365         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1366         if (err < 0)
1367                 goto failed_mon;
1368
1369
1370         err = register_netdevice(hwsim_mon);
1371         if (err < 0)
1372                 goto failed_mon;
1373
1374         rtnl_unlock();
1375
1376         return 0;
1377
1378 failed_mon:
1379         rtnl_unlock();
1380         free_netdev(hwsim_mon);
1381         mac80211_hwsim_free();
1382         return err;
1383
1384 failed_hw:
1385         device_unregister(data->dev);
1386 failed_drvdata:
1387         ieee80211_free_hw(hw);
1388 failed:
1389         mac80211_hwsim_free();
1390         return err;
1391 }
1392
1393
1394 static void __exit exit_mac80211_hwsim(void)
1395 {
1396         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1397
1398         mac80211_hwsim_free();
1399         unregister_netdev(hwsim_mon);
1400 }
1401
1402
1403 module_init(init_mac80211_hwsim);
1404 module_exit(exit_mac80211_hwsim);