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  * - Add TSF sync and fix IBSS beacon transmission by adding
  13  *   competition for "air time" at TBTT
  14  * - RX filtering based on filter configuration (data->rx_filter)
  15  */
  16
  17 #include <linux/list.h>
  18 #include <linux/slab.h>
  19 #include <linux/spinlock.h>
  20 #include <net/dst.h>
  21 #include <net/xfrm.h>
  22 #include <net/mac80211.h>
  23 #include <net/ieee80211_radiotap.h>
  24 #include <linux/if_arp.h>
  25 #include <linux/rtnetlink.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/debugfs.h>
  28
  29 MODULE_AUTHOR("Jouni Malinen");
  30 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  31 MODULE_LICENSE("GPL");
  32
  33 static int radios = 2;
  34 module_param(radios, int, 0444);
  35 MODULE_PARM_DESC(radios, "Number of simulated radios");
  36
  37 static bool fake_hw_scan;
  38 module_param(fake_hw_scan, bool, 0444);
  39 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
  40
  41 /**
  42  * enum hwsim_regtest - the type of regulatory tests we offer
  43  *
  44  * These are the different values you can use for the regtest
  45  * module parameter. This is useful to help test world roaming
  46  * and the driver regulatory_hint() call and combinations of these.
  47  * If you want to do specific alpha2 regulatory domain tests simply
  48  * use the userspace regulatory request as that will be respected as
  49  * well without the need of this module parameter. This is designed
  50  * only for testing the driver regulatory request, world roaming
  51  * and all possible combinations.
  52  *
  53  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  54  *      this is the default value.
  55  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  56  *      hint, only one driver regulatory hint will be sent as such the
  57  *      secondary radios are expected to follow.
  58  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  59  *      request with all radios reporting the same regulatory domain.
  60  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  61  *      different regulatory domains requests. Expected behaviour is for
  62  *      an intersection to occur but each device will still use their
  63  *      respective regulatory requested domains. Subsequent radios will
  64  *      use the resulting intersection.
  65  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  66  *      this by using a custom beacon-capable regulatory domain for the first
  67  *      radio. All other device world roam.
  68  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  69  *      domain requests. All radios will adhere to this custom world regulatory
  70  *      domain.
  71  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  72  *      domain requests. The first radio will adhere to the first custom world
  73  *      regulatory domain, the second one to the second custom world regulatory
  74  *      domain. All other devices will world roam.
  75  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  76  *      settings, only the first radio will send a regulatory domain request
  77  *      and use strict settings. The rest of the radios are expected to follow.
  78  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  79  *      settings. All radios will adhere to this.
  80  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  81  *      domain settings, combined with secondary driver regulatory domain
  82  *      settings. The first radio will get a strict regulatory domain setting
  83  *      using the first driver regulatory request and the second radio will use
  84  *      non-strict settings using the second driver regulatory request. All
  85  *      other devices should follow the intersection created between the
  86  *      first two.
  87  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  88  *      at least 6 radios for a complete test. We will test in this order:
  89  *      1 - driver custom world regulatory domain
  90  *      2 - second custom world regulatory domain
  91  *      3 - first driver regulatory domain request
  92  *      4 - second driver regulatory domain request
  93  *      5 - strict regulatory domain settings using the third driver regulatory
  94  *          domain request
  95  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
  96  *                 regulatory requests.
  97  */
  98 enum hwsim_regtest {
  99         HWSIM_REGTEST_DISABLED = 0,
 100         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 101         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 102         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 103         HWSIM_REGTEST_WORLD_ROAM = 4,
 104         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 105         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 106         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 107         HWSIM_REGTEST_STRICT_ALL = 8,
 108         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 109         HWSIM_REGTEST_ALL = 10,
 110 };
 111
 112 /* Set to one of the HWSIM_REGTEST_* values above */
 113 static int regtest = HWSIM_REGTEST_DISABLED;
 114 module_param(regtest, int, 0444);
 115 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 116
 117 static const char *hwsim_alpha2s[] = {
 118         "FI",
 119         "AL",
 120         "US",
 121         "DE",
 122         "JP",
 123         "AL",
 124 };
 125
 126 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 127         .n_reg_rules = 4,
 128         .alpha2 =  "99",
 129         .reg_rules = {
 130                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 131                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 132                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 133                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 134         }
 135 };
 136
 137 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 138         .n_reg_rules = 2,
 139         .alpha2 =  "99",
 140         .reg_rules = {
 141                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 142                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 143                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 144         }
 145 };
 146
 147 struct hwsim_vif_priv {
 148         u32 magic;
 149         u8 bssid[ETH_ALEN];
 150         bool assoc;
 151         u16 aid;
 152 };
 153
 154 #define HWSIM_VIF_MAGIC 0x69537748
 155
 156 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 157 {
 158         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 159         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 160 }
 161
 162 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 163 {
 164         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 165         vp->magic = HWSIM_VIF_MAGIC;
 166 }
 167
 168 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 169 {
 170         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 171         vp->magic = 0;
 172 }
 173
 174 struct hwsim_sta_priv {
 175         u32 magic;
 176 };
 177
 178 #define HWSIM_STA_MAGIC 0x6d537748
 179
 180 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 181 {
 182         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 183         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 184 }
 185
 186 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 187 {
 188         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 189         sp->magic = HWSIM_STA_MAGIC;
 190 }
 191
 192 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 193 {
 194         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 195         sp->magic = 0;
 196 }
 197
 198 static struct class *hwsim_class;
 199
 200 static struct net_device *hwsim_mon; /* global monitor netdev */
 201
 202 #define CHAN2G(_freq)  { \
 203         .band = IEEE80211_BAND_2GHZ, \
 204         .center_freq = (_freq), \
 205         .hw_value = (_freq), \
 206         .max_power = 20, \
 207 }
 208
 209 #define CHAN5G(_freq) { \
 210         .band = IEEE80211_BAND_5GHZ, \
 211         .center_freq = (_freq), \
 212         .hw_value = (_freq), \
 213         .max_power = 20, \
 214 }
 215
 216 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 217         CHAN2G(2412), /* Channel 1 */
 218         CHAN2G(2417), /* Channel 2 */
 219         CHAN2G(2422), /* Channel 3 */
 220         CHAN2G(2427), /* Channel 4 */
 221         CHAN2G(2432), /* Channel 5 */
 222         CHAN2G(2437), /* Channel 6 */
 223         CHAN2G(2442), /* Channel 7 */
 224         CHAN2G(2447), /* Channel 8 */
 225         CHAN2G(2452), /* Channel 9 */
 226         CHAN2G(2457), /* Channel 10 */
 227         CHAN2G(2462), /* Channel 11 */
 228         CHAN2G(2467), /* Channel 12 */
 229         CHAN2G(2472), /* Channel 13 */
 230         CHAN2G(2484), /* Channel 14 */
 231 };
 232
 233 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 234         CHAN5G(5180), /* Channel 36 */
 235         CHAN5G(5200), /* Channel 40 */
 236         CHAN5G(5220), /* Channel 44 */
 237         CHAN5G(5240), /* Channel 48 */
 238
 239         CHAN5G(5260), /* Channel 52 */
 240         CHAN5G(5280), /* Channel 56 */
 241         CHAN5G(5300), /* Channel 60 */
 242         CHAN5G(5320), /* Channel 64 */
 243
 244         CHAN5G(5500), /* Channel 100 */
 245         CHAN5G(5520), /* Channel 104 */
 246         CHAN5G(5540), /* Channel 108 */
 247         CHAN5G(5560), /* Channel 112 */
 248         CHAN5G(5580), /* Channel 116 */
 249         CHAN5G(5600), /* Channel 120 */
 250         CHAN5G(5620), /* Channel 124 */
 251         CHAN5G(5640), /* Channel 128 */
 252         CHAN5G(5660), /* Channel 132 */
 253         CHAN5G(5680), /* Channel 136 */
 254         CHAN5G(5700), /* Channel 140 */
 255
 256         CHAN5G(5745), /* Channel 149 */
 257         CHAN5G(5765), /* Channel 153 */
 258         CHAN5G(5785), /* Channel 157 */
 259         CHAN5G(5805), /* Channel 161 */
 260         CHAN5G(5825), /* Channel 165 */
 261 };
 262
 263 static const struct ieee80211_rate hwsim_rates[] = {
 264         { .bitrate = 10 },
 265         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 266         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 267         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 268         { .bitrate = 60 },
 269         { .bitrate = 90 },
 270         { .bitrate = 120 },
 271         { .bitrate = 180 },
 272         { .bitrate = 240 },
 273         { .bitrate = 360 },
 274         { .bitrate = 480 },
 275         { .bitrate = 540 }
 276 };
 277
 278 static spinlock_t hwsim_radio_lock;
 279 static struct list_head hwsim_radios;
 280
 281 struct mac80211_hwsim_data {
 282         struct list_head list;
 283         struct ieee80211_hw *hw;
 284         struct device *dev;
 285         struct ieee80211_supported_band bands[2];
 286         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 287         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 288         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 289
 290         struct mac_address addresses[2];
 291
 292         struct ieee80211_channel *channel;
 293         unsigned long beacon_int; /* in jiffies unit */
 294         unsigned int rx_filter;
 295         bool started, idle, scanning;
 296         struct mutex mutex;
 297         struct timer_list beacon_timer;
 298         enum ps_mode {
 299                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 300         } ps;
 301         bool ps_poll_pending;
 302         struct dentry *debugfs;
 303         struct dentry *debugfs_ps;
 304
 305         /*
 306          * Only radios in the same group can communicate together (the
 307          * channel has to match too). Each bit represents a group. A
 308          * radio can be in more then one group.
 309          */
 310         u64 group;
 311         struct dentry *debugfs_group;
 312
 313         int power_level;
 314 };
 315
 316
 317 struct hwsim_radiotap_hdr {
 318         struct ieee80211_radiotap_header hdr;
 319         u8 rt_flags;
 320         u8 rt_rate;
 321         __le16 rt_channel;
 322         __le16 rt_chbitmask;
 323 } __packed;
 324
 325
 326 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 327                                         struct net_device *dev)
 328 {
 329         /* TODO: allow packet injection */
 330         dev_kfree_skb(skb);
 331         return NETDEV_TX_OK;
 332 }
 333
 334
 335 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 336                                       struct sk_buff *tx_skb)
 337 {
 338         struct mac80211_hwsim_data *data = hw->priv;
 339         struct sk_buff *skb;
 340         struct hwsim_radiotap_hdr *hdr;
 341         u16 flags;
 342         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 343         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 344
 345         if (!netif_running(hwsim_mon))
 346                 return;
 347
 348         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 349         if (skb == NULL)
 350                 return;
 351
 352         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 353         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 354         hdr->hdr.it_pad = 0;
 355         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 356         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 357                                           (1 << IEEE80211_RADIOTAP_RATE) |
 358                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 359         hdr->rt_flags = 0;
 360         hdr->rt_rate = txrate->bitrate / 5;
 361         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 362         flags = IEEE80211_CHAN_2GHZ;
 363         if (txrate->flags & IEEE80211_RATE_ERP_G)
 364                 flags |= IEEE80211_CHAN_OFDM;
 365         else
 366                 flags |= IEEE80211_CHAN_CCK;
 367         hdr->rt_chbitmask = cpu_to_le16(flags);
 368
 369         skb->dev = hwsim_mon;
 370         skb_set_mac_header(skb, 0);
 371         skb->ip_summed = CHECKSUM_UNNECESSARY;
 372         skb->pkt_type = PACKET_OTHERHOST;
 373         skb->protocol = htons(ETH_P_802_2);
 374         memset(skb->cb, 0, sizeof(skb->cb));
 375         netif_rx(skb);
 376 }
 377
 378
 379 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 380 {
 381         struct mac80211_hwsim_data *data = hw->priv;
 382         struct sk_buff *skb;
 383         struct hwsim_radiotap_hdr *hdr;
 384         u16 flags;
 385         struct ieee80211_hdr *hdr11;
 386
 387         if (!netif_running(hwsim_mon))
 388                 return;
 389
 390         skb = dev_alloc_skb(100);
 391         if (skb == NULL)
 392                 return;
 393
 394         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 395         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 396         hdr->hdr.it_pad = 0;
 397         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 398         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 399                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 400         hdr->rt_flags = 0;
 401         hdr->rt_rate = 0;
 402         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 403         flags = IEEE80211_CHAN_2GHZ;
 404         hdr->rt_chbitmask = cpu_to_le16(flags);
 405
 406         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 407         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 408                                            IEEE80211_STYPE_ACK);
 409         hdr11->duration_id = cpu_to_le16(0);
 410         memcpy(hdr11->addr1, addr, ETH_ALEN);
 411
 412         skb->dev = hwsim_mon;
 413         skb_set_mac_header(skb, 0);
 414         skb->ip_summed = CHECKSUM_UNNECESSARY;
 415         skb->pkt_type = PACKET_OTHERHOST;
 416         skb->protocol = htons(ETH_P_802_2);
 417         memset(skb->cb, 0, sizeof(skb->cb));
 418         netif_rx(skb);
 419 }
 420
 421
 422 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 423                            struct sk_buff *skb)
 424 {
 425         switch (data->ps) {
 426         case PS_DISABLED:
 427                 return true;
 428         case PS_ENABLED:
 429                 return false;
 430         case PS_AUTO_POLL:
 431                 /* TODO: accept (some) Beacons by default and other frames only
 432                  * if pending PS-Poll has been sent */
 433                 return true;
 434         case PS_MANUAL_POLL:
 435                 /* Allow unicast frames to own address if there is a pending
 436                  * PS-Poll */
 437                 if (data->ps_poll_pending &&
 438                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 439                            ETH_ALEN) == 0) {
 440                         data->ps_poll_pending = false;
 441                         return true;
 442                 }
 443                 return false;
 444         }
 445
 446         return true;
 447 }
 448
 449
 450 struct mac80211_hwsim_addr_match_data {
 451         bool ret;
 452         const u8 *addr;
 453 };
 454
 455 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 456                                      struct ieee80211_vif *vif)
 457 {
 458         struct mac80211_hwsim_addr_match_data *md = data;
 459         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 460                 md->ret = true;
 461 }
 462
 463
 464 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 465                                       const u8 *addr)
 466 {
 467         struct mac80211_hwsim_addr_match_data md;
 468
 469         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 470                 return true;
 471
 472         md.ret = false;
 473         md.addr = addr;
 474         ieee80211_iterate_active_interfaces_atomic(data->hw,
 475                                                    mac80211_hwsim_addr_iter,
 476                                                    &md);
 477
 478         return md.ret;
 479 }
 480
 481
 482 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 483                                     struct sk_buff *skb)
 484 {
 485         struct mac80211_hwsim_data *data = hw->priv, *data2;
 486         bool ack = false;
 487         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 488         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 489         struct ieee80211_rx_status rx_status;
 490
 491         if (data->idle) {
 492                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 493                 return false;
 494         }
 495
 496         memset(&rx_status, 0, sizeof(rx_status));
 497         /* TODO: set mactime */
 498         rx_status.freq = data->channel->center_freq;
 499         rx_status.band = data->channel->band;
 500         rx_status.rate_idx = info->control.rates[0].idx;
 501         /* TODO: simulate real signal strength (and optional packet loss) */
 502         rx_status.signal = data->power_level - 50;
 503
 504         if (data->ps != PS_DISABLED)
 505                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 506
 507         /* release the skb's source info */
 508         skb_orphan(skb);
 509         skb_dst_drop(skb);
 510         skb->mark = 0;
 511         secpath_reset(skb);
 512         nf_reset(skb);
 513
 514         /* Copy skb to all enabled radios that are on the current frequency */
 515         spin_lock(&hwsim_radio_lock);
 516         list_for_each_entry(data2, &hwsim_radios, list) {
 517                 struct sk_buff *nskb;
 518
 519                 if (data == data2)
 520                         continue;
 521
 522                 if (data2->idle || !data2->started ||
 523                     !hwsim_ps_rx_ok(data2, skb) ||
 524                     !data->channel || !data2->channel ||
 525                     data->channel->center_freq != data2->channel->center_freq ||
 526                     !(data->group & data2->group))
 527                         continue;
 528
 529                 nskb = skb_copy(skb, GFP_ATOMIC);
 530                 if (nskb == NULL)
 531                         continue;
 532
 533                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 534                         ack = true;
 535                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 536                 ieee80211_rx_irqsafe(data2->hw, nskb);
 537         }
 538         spin_unlock(&hwsim_radio_lock);
 539
 540         return ack;
 541 }
 542
 543
 544 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 545 {
 546         bool ack;
 547         struct ieee80211_tx_info *txi;
 548
 549         mac80211_hwsim_monitor_rx(hw, skb);
 550
 551         if (skb->len < 10) {
 552                 /* Should not happen; just a sanity check for addr1 use */
 553                 dev_kfree_skb(skb);
 554                 return;
 555         }
 556
 557         ack = mac80211_hwsim_tx_frame(hw, skb);
 558         if (ack && skb->len >= 16) {
 559                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 560                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 561         }
 562
 563         txi = IEEE80211_SKB_CB(skb);
 564
 565         if (txi->control.vif)
 566                 hwsim_check_magic(txi->control.vif);
 567         if (txi->control.sta)
 568                 hwsim_check_sta_magic(txi->control.sta);
 569
 570         ieee80211_tx_info_clear_status(txi);
 571         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 572                 txi->flags |= IEEE80211_TX_STAT_ACK;
 573         ieee80211_tx_status_irqsafe(hw, skb);
 574 }
 575
 576
 577 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 578 {
 579         struct mac80211_hwsim_data *data = hw->priv;
 580         wiphy_debug(hw->wiphy, "%s\n", __func__);
 581         data->started = 1;
 582         return 0;
 583 }
 584
 585
 586 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 587 {
 588         struct mac80211_hwsim_data *data = hw->priv;
 589         data->started = 0;
 590         del_timer(&data->beacon_timer);
 591         wiphy_debug(hw->wiphy, "%s\n", __func__);
 592 }
 593
 594
 595 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 596                                         struct ieee80211_vif *vif)
 597 {
 598         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 599                     __func__, ieee80211_vif_type_p2p(vif),
 600                     vif->addr);
 601         hwsim_set_magic(vif);
 602         return 0;
 603 }
 604
 605
 606 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 607                                            struct ieee80211_vif *vif,
 608                                            enum nl80211_iftype newtype,
 609                                            bool newp2p)
 610 {
 611         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 612         wiphy_debug(hw->wiphy,
 613                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 614                     __func__, ieee80211_vif_type_p2p(vif),
 615                     newtype, vif->addr);
 616         hwsim_check_magic(vif);
 617
 618         return 0;
 619 }
 620
 621 static void mac80211_hwsim_remove_interface(
 622         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 623 {
 624         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 625                     __func__, ieee80211_vif_type_p2p(vif),
 626                     vif->addr);
 627         hwsim_check_magic(vif);
 628         hwsim_clear_magic(vif);
 629 }
 630
 631
 632 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 633                                      struct ieee80211_vif *vif)
 634 {
 635         struct ieee80211_hw *hw = arg;
 636         struct sk_buff *skb;
 637         struct ieee80211_tx_info *info;
 638
 639         hwsim_check_magic(vif);
 640
 641         if (vif->type != NL80211_IFTYPE_AP &&
 642             vif->type != NL80211_IFTYPE_MESH_POINT &&
 643             vif->type != NL80211_IFTYPE_ADHOC)
 644                 return;
 645
 646         skb = ieee80211_beacon_get(hw, vif);
 647         if (skb == NULL)
 648                 return;
 649         info = IEEE80211_SKB_CB(skb);
 650
 651         mac80211_hwsim_monitor_rx(hw, skb);
 652         mac80211_hwsim_tx_frame(hw, skb);
 653         dev_kfree_skb(skb);
 654 }
 655
 656
 657 static void mac80211_hwsim_beacon(unsigned long arg)
 658 {
 659         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 660         struct mac80211_hwsim_data *data = hw->priv;
 661
 662         if (!data->started)
 663                 return;
 664
 665         ieee80211_iterate_active_interfaces_atomic(
 666                 hw, mac80211_hwsim_beacon_tx, hw);
 667
 668         data->beacon_timer.expires = jiffies + data->beacon_int;
 669         add_timer(&data->beacon_timer);
 670 }
 671
 672 static const char *hwsim_chantypes[] = {
 673         [NL80211_CHAN_NO_HT] = "noht",
 674         [NL80211_CHAN_HT20] = "ht20",
 675         [NL80211_CHAN_HT40MINUS] = "ht40-",
 676         [NL80211_CHAN_HT40PLUS] = "ht40+",
 677 };
 678
 679 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 680 {
 681         struct mac80211_hwsim_data *data = hw->priv;
 682         struct ieee80211_conf *conf = &hw->conf;
 683         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 684                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 685                 [IEEE80211_SMPS_OFF] = "off",
 686                 [IEEE80211_SMPS_STATIC] = "static",
 687                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 688         };
 689
 690         wiphy_debug(hw->wiphy,
 691                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 692                     __func__,
 693                     conf->channel->center_freq,
 694                     hwsim_chantypes[conf->channel_type],
 695                     !!(conf->flags & IEEE80211_CONF_IDLE),
 696                     !!(conf->flags & IEEE80211_CONF_PS),
 697                     smps_modes[conf->smps_mode]);
 698
 699         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 700
 701         data->channel = conf->channel;
 702         data->power_level = conf->power_level;
 703         if (!data->started || !data->beacon_int)
 704                 del_timer(&data->beacon_timer);
 705         else
 706                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 707
 708         return 0;
 709 }
 710
 711
 712 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 713                                             unsigned int changed_flags,
 714                                             unsigned int *total_flags,u64 multicast)
 715 {
 716         struct mac80211_hwsim_data *data = hw->priv;
 717
 718         wiphy_debug(hw->wiphy, "%s\n", __func__);
 719
 720         data->rx_filter = 0;
 721         if (*total_flags & FIF_PROMISC_IN_BSS)
 722                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 723         if (*total_flags & FIF_ALLMULTI)
 724                 data->rx_filter |= FIF_ALLMULTI;
 725
 726         *total_flags = data->rx_filter;
 727 }
 728
 729 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 730                                             struct ieee80211_vif *vif,
 731                                             struct ieee80211_bss_conf *info,
 732                                             u32 changed)
 733 {
 734         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 735         struct mac80211_hwsim_data *data = hw->priv;
 736
 737         hwsim_check_magic(vif);
 738
 739         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
 740
 741         if (changed & BSS_CHANGED_BSSID) {
 742                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
 743                             __func__, info->bssid);
 744                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 745         }
 746
 747         if (changed & BSS_CHANGED_ASSOC) {
 748                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
 749                             info->assoc, info->aid);
 750                 vp->assoc = info->assoc;
 751                 vp->aid = info->aid;
 752         }
 753
 754         if (changed & BSS_CHANGED_BEACON_INT) {
 755                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
 756                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 757                 if (WARN_ON(!data->beacon_int))
 758                         data->beacon_int = 1;
 759                 if (data->started)
 760                         mod_timer(&data->beacon_timer,
 761                                   jiffies + data->beacon_int);
 762         }
 763
 764         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 765                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
 766                             info->use_cts_prot);
 767         }
 768
 769         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 770                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
 771                             info->use_short_preamble);
 772         }
 773
 774         if (changed & BSS_CHANGED_ERP_SLOT) {
 775                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
 776         }
 777
 778         if (changed & BSS_CHANGED_HT) {
 779                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
 780                             info->ht_operation_mode,
 781                             hwsim_chantypes[info->channel_type]);
 782         }
 783
 784         if (changed & BSS_CHANGED_BASIC_RATES) {
 785                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
 786                             (unsigned long long) info->basic_rates);
 787         }
 788 }
 789
 790 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 791                                   struct ieee80211_vif *vif,
 792                                   struct ieee80211_sta *sta)
 793 {
 794         hwsim_check_magic(vif);
 795         hwsim_set_sta_magic(sta);
 796
 797         return 0;
 798 }
 799
 800 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 801                                      struct ieee80211_vif *vif,
 802                                      struct ieee80211_sta *sta)
 803 {
 804         hwsim_check_magic(vif);
 805         hwsim_clear_sta_magic(sta);
 806
 807         return 0;
 808 }
 809
 810 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 811                                       struct ieee80211_vif *vif,
 812                                       enum sta_notify_cmd cmd,
 813                                       struct ieee80211_sta *sta)
 814 {
 815         hwsim_check_magic(vif);
 816
 817         switch (cmd) {
 818         case STA_NOTIFY_SLEEP:
 819         case STA_NOTIFY_AWAKE:
 820                 /* TODO: make good use of these flags */
 821                 break;
 822         default:
 823                 WARN(1, "Invalid sta notify: %d\n", cmd);
 824                 break;
 825         }
 826 }
 827
 828 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 829                                   struct ieee80211_sta *sta,
 830                                   bool set)
 831 {
 832         hwsim_check_sta_magic(sta);
 833         return 0;
 834 }
 835
 836 static int mac80211_hwsim_conf_tx(
 837         struct ieee80211_hw *hw, u16 queue,
 838         const struct ieee80211_tx_queue_params *params)
 839 {
 840         wiphy_debug(hw->wiphy,
 841                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
 842                     __func__, queue,
 843                     params->txop, params->cw_min,
 844                     params->cw_max, params->aifs);
 845         return 0;
 846 }
 847
 848 static int mac80211_hwsim_get_survey(
 849         struct ieee80211_hw *hw, int idx,
 850         struct survey_info *survey)
 851 {
 852         struct ieee80211_conf *conf = &hw->conf;
 853
 854         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
 855
 856         if (idx != 0)
 857                 return -ENOENT;
 858
 859         /* Current channel */
 860         survey->channel = conf->channel;
 861
 862         /*
 863          * Magically conjured noise level --- this is only ok for simulated hardware.
 864          *
 865          * A real driver which cannot determine the real channel noise MUST NOT
 866          * report any noise, especially not a magically conjured one :-)
 867          */
 868         survey->filled = SURVEY_INFO_NOISE_DBM;
 869         survey->noise = -92;
 870
 871         return 0;
 872 }
 873
 874 #ifdef CONFIG_NL80211_TESTMODE
 875 /*
 876  * This section contains example code for using netlink
 877  * attributes with the testmode command in nl80211.
 878  */
 879
 880 /* These enums need to be kept in sync with userspace */
 881 enum hwsim_testmode_attr {
 882         __HWSIM_TM_ATTR_INVALID = 0,
 883         HWSIM_TM_ATTR_CMD       = 1,
 884         HWSIM_TM_ATTR_PS        = 2,
 885
 886         /* keep last */
 887         __HWSIM_TM_ATTR_AFTER_LAST,
 888         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
 889 };
 890
 891 enum hwsim_testmode_cmd {
 892         HWSIM_TM_CMD_SET_PS             = 0,
 893         HWSIM_TM_CMD_GET_PS             = 1,
 894 };
 895
 896 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
 897         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
 898         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
 899 };
 900
 901 static int hwsim_fops_ps_write(void *dat, u64 val);
 902
 903 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
 904                                        void *data, int len)
 905 {
 906         struct mac80211_hwsim_data *hwsim = hw->priv;
 907         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
 908         struct sk_buff *skb;
 909         int err, ps;
 910
 911         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
 912                         hwsim_testmode_policy);
 913         if (err)
 914                 return err;
 915
 916         if (!tb[HWSIM_TM_ATTR_CMD])
 917                 return -EINVAL;
 918
 919         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
 920         case HWSIM_TM_CMD_SET_PS:
 921                 if (!tb[HWSIM_TM_ATTR_PS])
 922                         return -EINVAL;
 923                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
 924                 return hwsim_fops_ps_write(hwsim, ps);
 925         case HWSIM_TM_CMD_GET_PS:
 926                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
 927                                                 nla_total_size(sizeof(u32)));
 928                 if (!skb)
 929                         return -ENOMEM;
 930                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
 931                 return cfg80211_testmode_reply(skb);
 932         default:
 933                 return -EOPNOTSUPP;
 934         }
 935
 936  nla_put_failure:
 937         kfree_skb(skb);
 938         return -ENOBUFS;
 939 }
 940 #endif
 941
 942 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
 943                                        struct ieee80211_vif *vif,
 944                                        enum ieee80211_ampdu_mlme_action action,
 945                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
 946                                        u8 buf_size)
 947 {
 948         switch (action) {
 949         case IEEE80211_AMPDU_TX_START:
 950                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 951                 break;
 952         case IEEE80211_AMPDU_TX_STOP:
 953                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 954                 break;
 955         case IEEE80211_AMPDU_TX_OPERATIONAL:
 956                 break;
 957         case IEEE80211_AMPDU_RX_START:
 958         case IEEE80211_AMPDU_RX_STOP:
 959                 break;
 960         default:
 961                 return -EOPNOTSUPP;
 962         }
 963
 964         return 0;
 965 }
 966
 967 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
 968 {
 969         /*
 970          * In this special case, there's nothing we need to
 971          * do because hwsim does transmission synchronously.
 972          * In the future, when it does transmissions via
 973          * userspace, we may need to do something.
 974          */
 975 }
 976
 977 struct hw_scan_done {
 978         struct delayed_work w;
 979         struct ieee80211_hw *hw;
 980 };
 981
 982 static void hw_scan_done(struct work_struct *work)
 983 {
 984         struct hw_scan_done *hsd =
 985                 container_of(work, struct hw_scan_done, w.work);
 986
 987         ieee80211_scan_completed(hsd->hw, false);
 988         kfree(hsd);
 989 }
 990
 991 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
 992                                   struct ieee80211_vif *vif,
 993                                   struct cfg80211_scan_request *req)
 994 {
 995         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
 996         int i;
 997
 998         if (!hsd)
 999                 return -ENOMEM;
1000
1001         hsd->hw = hw;
1002         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1003
1004         printk(KERN_DEBUG "hwsim hw_scan request\n");
1005         for (i = 0; i < req->n_channels; i++)
1006                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1007                         req->channels[i]->center_freq);
1008
1009         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1010
1011         return 0;
1012 }
1013
1014 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1015 {
1016         struct mac80211_hwsim_data *hwsim = hw->priv;
1017
1018         mutex_lock(&hwsim->mutex);
1019
1020         if (hwsim->scanning) {
1021                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1022                 goto out;
1023         }
1024
1025         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1026         hwsim->scanning = true;
1027
1028 out:
1029         mutex_unlock(&hwsim->mutex);
1030 }
1031
1032 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1033 {
1034         struct mac80211_hwsim_data *hwsim = hw->priv;
1035
1036         mutex_lock(&hwsim->mutex);
1037
1038         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1039         hwsim->scanning = false;
1040
1041         mutex_unlock(&hwsim->mutex);
1042 }
1043
1044 static struct ieee80211_ops mac80211_hwsim_ops =
1045 {
1046         .tx = mac80211_hwsim_tx,
1047         .start = mac80211_hwsim_start,
1048         .stop = mac80211_hwsim_stop,
1049         .add_interface = mac80211_hwsim_add_interface,
1050         .change_interface = mac80211_hwsim_change_interface,
1051         .remove_interface = mac80211_hwsim_remove_interface,
1052         .config = mac80211_hwsim_config,
1053         .configure_filter = mac80211_hwsim_configure_filter,
1054         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1055         .sta_add = mac80211_hwsim_sta_add,
1056         .sta_remove = mac80211_hwsim_sta_remove,
1057         .sta_notify = mac80211_hwsim_sta_notify,
1058         .set_tim = mac80211_hwsim_set_tim,
1059         .conf_tx = mac80211_hwsim_conf_tx,
1060         .get_survey = mac80211_hwsim_get_survey,
1061         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1062         .ampdu_action = mac80211_hwsim_ampdu_action,
1063         .sw_scan_start = mac80211_hwsim_sw_scan,
1064         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1065         .flush = mac80211_hwsim_flush,
1066 };
1067
1068
1069 static void mac80211_hwsim_free(void)
1070 {
1071         struct list_head tmplist, *i, *tmp;
1072         struct mac80211_hwsim_data *data, *tmpdata;
1073
1074         INIT_LIST_HEAD(&tmplist);
1075
1076         spin_lock_bh(&hwsim_radio_lock);
1077         list_for_each_safe(i, tmp, &hwsim_radios)
1078                 list_move(i, &tmplist);
1079         spin_unlock_bh(&hwsim_radio_lock);
1080
1081         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1082                 debugfs_remove(data->debugfs_group);
1083                 debugfs_remove(data->debugfs_ps);
1084                 debugfs_remove(data->debugfs);
1085                 ieee80211_unregister_hw(data->hw);
1086                 device_unregister(data->dev);
1087                 ieee80211_free_hw(data->hw);
1088         }
1089         class_destroy(hwsim_class);
1090 }
1091
1092
1093 static struct device_driver mac80211_hwsim_driver = {
1094         .name = "mac80211_hwsim"
1095 };
1096
1097 static const struct net_device_ops hwsim_netdev_ops = {
1098         .ndo_start_xmit         = hwsim_mon_xmit,
1099         .ndo_change_mtu         = eth_change_mtu,
1100         .ndo_set_mac_address    = eth_mac_addr,
1101         .ndo_validate_addr      = eth_validate_addr,
1102 };
1103
1104 static void hwsim_mon_setup(struct net_device *dev)
1105 {
1106         dev->netdev_ops = &hwsim_netdev_ops;
1107         dev->destructor = free_netdev;
1108         ether_setup(dev);
1109         dev->tx_queue_len = 0;
1110         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1111         memset(dev->dev_addr, 0, ETH_ALEN);
1112         dev->dev_addr[0] = 0x12;
1113 }
1114
1115
1116 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1117 {
1118         struct mac80211_hwsim_data *data = dat;
1119         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1120         struct sk_buff *skb;
1121         struct ieee80211_pspoll *pspoll;
1122
1123         if (!vp->assoc)
1124                 return;
1125
1126         wiphy_debug(data->hw->wiphy,
1127                     "%s: send PS-Poll to %pM for aid %d\n",
1128                     __func__, vp->bssid, vp->aid);
1129
1130         skb = dev_alloc_skb(sizeof(*pspoll));
1131         if (!skb)
1132                 return;
1133         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1134         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1135                                             IEEE80211_STYPE_PSPOLL |
1136                                             IEEE80211_FCTL_PM);
1137         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1138         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1139         memcpy(pspoll->ta, mac, ETH_ALEN);
1140         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1141                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1142         dev_kfree_skb(skb);
1143 }
1144
1145
1146 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1147                                 struct ieee80211_vif *vif, int ps)
1148 {
1149         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1150         struct sk_buff *skb;
1151         struct ieee80211_hdr *hdr;
1152
1153         if (!vp->assoc)
1154                 return;
1155
1156         wiphy_debug(data->hw->wiphy,
1157                     "%s: send data::nullfunc to %pM ps=%d\n",
1158                     __func__, vp->bssid, ps);
1159
1160         skb = dev_alloc_skb(sizeof(*hdr));
1161         if (!skb)
1162                 return;
1163         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1164         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1165                                          IEEE80211_STYPE_NULLFUNC |
1166                                          (ps ? IEEE80211_FCTL_PM : 0));
1167         hdr->duration_id = cpu_to_le16(0);
1168         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1169         memcpy(hdr->addr2, mac, ETH_ALEN);
1170         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1171         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1172                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1173         dev_kfree_skb(skb);
1174 }
1175
1176
1177 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1178                                    struct ieee80211_vif *vif)
1179 {
1180         struct mac80211_hwsim_data *data = dat;
1181         hwsim_send_nullfunc(data, mac, vif, 1);
1182 }
1183
1184
1185 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1186                                       struct ieee80211_vif *vif)
1187 {
1188         struct mac80211_hwsim_data *data = dat;
1189         hwsim_send_nullfunc(data, mac, vif, 0);
1190 }
1191
1192
1193 static int hwsim_fops_ps_read(void *dat, u64 *val)
1194 {
1195         struct mac80211_hwsim_data *data = dat;
1196         *val = data->ps;
1197         return 0;
1198 }
1199
1200 static int hwsim_fops_ps_write(void *dat, u64 val)
1201 {
1202         struct mac80211_hwsim_data *data = dat;
1203         enum ps_mode old_ps;
1204
1205         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1206             val != PS_MANUAL_POLL)
1207                 return -EINVAL;
1208
1209         old_ps = data->ps;
1210         data->ps = val;
1211
1212         if (val == PS_MANUAL_POLL) {
1213                 ieee80211_iterate_active_interfaces(data->hw,
1214                                                     hwsim_send_ps_poll, data);
1215                 data->ps_poll_pending = true;
1216         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1217                 ieee80211_iterate_active_interfaces(data->hw,
1218                                                     hwsim_send_nullfunc_ps,
1219                                                     data);
1220         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1221                 ieee80211_iterate_active_interfaces(data->hw,
1222                                                     hwsim_send_nullfunc_no_ps,
1223                                                     data);
1224         }
1225
1226         return 0;
1227 }
1228
1229 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1230                         "%llu\n");
1231
1232
1233 static int hwsim_fops_group_read(void *dat, u64 *val)
1234 {
1235         struct mac80211_hwsim_data *data = dat;
1236         *val = data->group;
1237         return 0;
1238 }
1239
1240 static int hwsim_fops_group_write(void *dat, u64 val)
1241 {
1242         struct mac80211_hwsim_data *data = dat;
1243         data->group = val;
1244         return 0;
1245 }
1246
1247 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1248                         hwsim_fops_group_read, hwsim_fops_group_write,
1249                         "%llx\n");
1250
1251 static int __init init_mac80211_hwsim(void)
1252 {
1253         int i, err = 0;
1254         u8 addr[ETH_ALEN];
1255         struct mac80211_hwsim_data *data;
1256         struct ieee80211_hw *hw;
1257         enum ieee80211_band band;
1258
1259         if (radios < 1 || radios > 100)
1260                 return -EINVAL;
1261
1262         if (fake_hw_scan) {
1263                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1264                 mac80211_hwsim_ops.sw_scan_start = NULL;
1265                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1266         }
1267
1268         spin_lock_init(&hwsim_radio_lock);
1269         INIT_LIST_HEAD(&hwsim_radios);
1270
1271         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1272         if (IS_ERR(hwsim_class))
1273                 return PTR_ERR(hwsim_class);
1274
1275         memset(addr, 0, ETH_ALEN);
1276         addr[0] = 0x02;
1277
1278         for (i = 0; i < radios; i++) {
1279                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1280                        i);
1281                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1282                 if (!hw) {
1283                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1284                                "failed\n");
1285                         err = -ENOMEM;
1286                         goto failed;
1287                 }
1288                 data = hw->priv;
1289                 data->hw = hw;
1290
1291                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1292                                           "hwsim%d", i);
1293                 if (IS_ERR(data->dev)) {
1294                         printk(KERN_DEBUG
1295                                "mac80211_hwsim: device_create "
1296                                "failed (%ld)\n", PTR_ERR(data->dev));
1297                         err = -ENOMEM;
1298                         goto failed_drvdata;
1299                 }
1300                 data->dev->driver = &mac80211_hwsim_driver;
1301
1302                 SET_IEEE80211_DEV(hw, data->dev);
1303                 addr[3] = i >> 8;
1304                 addr[4] = i;
1305                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1306                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1307                 data->addresses[1].addr[0] |= 0x40;
1308                 hw->wiphy->n_addresses = 2;
1309                 hw->wiphy->addresses = data->addresses;
1310
1311                 if (fake_hw_scan) {
1312                         hw->wiphy->max_scan_ssids = 255;
1313                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1314                 }
1315
1316                 hw->channel_change_time = 1;
1317                 hw->queues = 4;
1318                 hw->wiphy->interface_modes =
1319                         BIT(NL80211_IFTYPE_STATION) |
1320                         BIT(NL80211_IFTYPE_AP) |
1321                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1322                         BIT(NL80211_IFTYPE_P2P_GO) |
1323                         BIT(NL80211_IFTYPE_ADHOC) |
1324                         BIT(NL80211_IFTYPE_MESH_POINT);
1325
1326                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1327                             IEEE80211_HW_SIGNAL_DBM |
1328                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1329                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1330                             IEEE80211_HW_AMPDU_AGGREGATION;
1331
1332                 /* ask mac80211 to reserve space for magic */
1333                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1334                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1335
1336                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1337                         sizeof(hwsim_channels_2ghz));
1338                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1339                         sizeof(hwsim_channels_5ghz));
1340                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1341
1342                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1343                         struct ieee80211_supported_band *sband = &data->bands[band];
1344                         switch (band) {
1345                         case IEEE80211_BAND_2GHZ:
1346                                 sband->channels = data->channels_2ghz;
1347                                 sband->n_channels =
1348                                         ARRAY_SIZE(hwsim_channels_2ghz);
1349                                 sband->bitrates = data->rates;
1350                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1351                                 break;
1352                         case IEEE80211_BAND_5GHZ:
1353                                 sband->channels = data->channels_5ghz;
1354                                 sband->n_channels =
1355                                         ARRAY_SIZE(hwsim_channels_5ghz);
1356                                 sband->bitrates = data->rates + 4;
1357                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1358                                 break;
1359                         default:
1360                                 break;
1361                         }
1362
1363                         sband->ht_cap.ht_supported = true;
1364                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1365                                 IEEE80211_HT_CAP_GRN_FLD |
1366                                 IEEE80211_HT_CAP_SGI_40 |
1367                                 IEEE80211_HT_CAP_DSSSCCK40;
1368                         sband->ht_cap.ampdu_factor = 0x3;
1369                         sband->ht_cap.ampdu_density = 0x6;
1370                         memset(&sband->ht_cap.mcs, 0,
1371                                sizeof(sband->ht_cap.mcs));
1372                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1373                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1374                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1375
1376                         hw->wiphy->bands[band] = sband;
1377                 }
1378                 /* By default all radios are belonging to the first group */
1379                 data->group = 1;
1380                 mutex_init(&data->mutex);
1381
1382                 /* Work to be done prior to ieee80211_register_hw() */
1383                 switch (regtest) {
1384                 case HWSIM_REGTEST_DISABLED:
1385                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1386                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1387                 case HWSIM_REGTEST_DIFF_COUNTRY:
1388                         /*
1389                          * Nothing to be done for driver regulatory domain
1390                          * hints prior to ieee80211_register_hw()
1391                          */
1392                         break;
1393                 case HWSIM_REGTEST_WORLD_ROAM:
1394                         if (i == 0) {
1395                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1396                                 wiphy_apply_custom_regulatory(hw->wiphy,
1397                                         &hwsim_world_regdom_custom_01);
1398                         }
1399                         break;
1400                 case HWSIM_REGTEST_CUSTOM_WORLD:
1401                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1402                         wiphy_apply_custom_regulatory(hw->wiphy,
1403                                 &hwsim_world_regdom_custom_01);
1404                         break;
1405                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1406                         if (i == 0) {
1407                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1408                                 wiphy_apply_custom_regulatory(hw->wiphy,
1409                                         &hwsim_world_regdom_custom_01);
1410                         } else if (i == 1) {
1411                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1412                                 wiphy_apply_custom_regulatory(hw->wiphy,
1413                                         &hwsim_world_regdom_custom_02);
1414                         }
1415                         break;
1416                 case HWSIM_REGTEST_STRICT_ALL:
1417                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1418                         break;
1419                 case HWSIM_REGTEST_STRICT_FOLLOW:
1420                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1421                         if (i == 0)
1422                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1423                         break;
1424                 case HWSIM_REGTEST_ALL:
1425                         if (i == 0) {
1426                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1427                                 wiphy_apply_custom_regulatory(hw->wiphy,
1428                                         &hwsim_world_regdom_custom_01);
1429                         } else if (i == 1) {
1430                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1431                                 wiphy_apply_custom_regulatory(hw->wiphy,
1432                                         &hwsim_world_regdom_custom_02);
1433                         } else if (i == 4)
1434                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1435                         break;
1436                 default:
1437                         break;
1438                 }
1439
1440                 /* give the regulatory workqueue a chance to run */
1441                 if (regtest)
1442                         schedule_timeout_interruptible(1);
1443                 err = ieee80211_register_hw(hw);
1444                 if (err < 0) {
1445                         printk(KERN_DEBUG "mac80211_hwsim: "
1446                                "ieee80211_register_hw failed (%d)\n", err);
1447                         goto failed_hw;
1448                 }
1449
1450                 /* Work to be done after to ieee80211_register_hw() */
1451                 switch (regtest) {
1452                 case HWSIM_REGTEST_WORLD_ROAM:
1453                 case HWSIM_REGTEST_DISABLED:
1454                         break;
1455                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1456                         if (!i)
1457                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1458                         break;
1459                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1460                 case HWSIM_REGTEST_STRICT_ALL:
1461                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1462                         break;
1463                 case HWSIM_REGTEST_DIFF_COUNTRY:
1464                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1465                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1466                         break;
1467                 case HWSIM_REGTEST_CUSTOM_WORLD:
1468                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1469                         /*
1470                          * Nothing to be done for custom world regulatory
1471                          * domains after to ieee80211_register_hw
1472                          */
1473                         break;
1474                 case HWSIM_REGTEST_STRICT_FOLLOW:
1475                         if (i == 0)
1476                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1477                         break;
1478                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1479                         if (i == 0)
1480                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1481                         else if (i == 1)
1482                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1483                         break;
1484                 case HWSIM_REGTEST_ALL:
1485                         if (i == 2)
1486                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1487                         else if (i == 3)
1488                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1489                         else if (i == 4)
1490                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1491                         break;
1492                 default:
1493                         break;
1494                 }
1495
1496                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1497                             hw->wiphy->perm_addr);
1498
1499                 data->debugfs = debugfs_create_dir("hwsim",
1500                                                    hw->wiphy->debugfsdir);
1501                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1502                                                        data->debugfs, data,
1503                                                        &hwsim_fops_ps);
1504                 data->debugfs_group = debugfs_create_file("group", 0666,
1505                                                         data->debugfs, data,
1506                                                         &hwsim_fops_group);
1507
1508                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1509                             (unsigned long) hw);
1510
1511                 list_add_tail(&data->list, &hwsim_radios);
1512         }
1513
1514         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1515         if (hwsim_mon == NULL)
1516                 goto failed;
1517
1518         rtnl_lock();
1519
1520         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1521         if (err < 0)
1522                 goto failed_mon;
1523
1524
1525         err = register_netdevice(hwsim_mon);
1526         if (err < 0)
1527                 goto failed_mon;
1528
1529         rtnl_unlock();
1530
1531         return 0;
1532
1533 failed_mon:
1534         rtnl_unlock();
1535         free_netdev(hwsim_mon);
1536         mac80211_hwsim_free();
1537         return err;
1538
1539 failed_hw:
1540         device_unregister(data->dev);
1541 failed_drvdata:
1542         ieee80211_free_hw(hw);
1543 failed:
1544         mac80211_hwsim_free();
1545         return err;
1546 }
1547
1548
1549 static void __exit exit_mac80211_hwsim(void)
1550 {
1551         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1552
1553         mac80211_hwsim_free();
1554         unregister_netdev(hwsim_mon);
1555 }
1556
1557
1558 module_init(init_mac80211_hwsim);
1559 module_exit(exit_mac80211_hwsim);