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  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/debugfs.h>
  29 #include <linux/module.h>
  30 #include <net/genetlink.h>
  31 #include "mac80211_hwsim.h"
  32
  33 #define WARN_QUEUE 100
  34 #define MAX_QUEUE 200
  35
  36 MODULE_AUTHOR("Jouni Malinen");
  37 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  38 MODULE_LICENSE("GPL");
  39
  40 static u32 wmediumd_pid;
  41
  42 static int radios = 2;
  43 module_param(radios, int, 0444);
  44 MODULE_PARM_DESC(radios, "Number of simulated radios");
  45
  46 static bool fake_hw_scan;
  47 module_param(fake_hw_scan, bool, 0444);
  48 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
  49
  50 /**
  51  * enum hwsim_regtest - the type of regulatory tests we offer
  52  *
  53  * These are the different values you can use for the regtest
  54  * module parameter. This is useful to help test world roaming
  55  * and the driver regulatory_hint() call and combinations of these.
  56  * If you want to do specific alpha2 regulatory domain tests simply
  57  * use the userspace regulatory request as that will be respected as
  58  * well without the need of this module parameter. This is designed
  59  * only for testing the driver regulatory request, world roaming
  60  * and all possible combinations.
  61  *
  62  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  63  *      this is the default value.
  64  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  65  *      hint, only one driver regulatory hint will be sent as such the
  66  *      secondary radios are expected to follow.
  67  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  68  *      request with all radios reporting the same regulatory domain.
  69  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  70  *      different regulatory domains requests. Expected behaviour is for
  71  *      an intersection to occur but each device will still use their
  72  *      respective regulatory requested domains. Subsequent radios will
  73  *      use the resulting intersection.
  74  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  75  *      this by using a custom beacon-capable regulatory domain for the first
  76  *      radio. All other device world roam.
  77  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  78  *      domain requests. All radios will adhere to this custom world regulatory
  79  *      domain.
  80  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  81  *      domain requests. The first radio will adhere to the first custom world
  82  *      regulatory domain, the second one to the second custom world regulatory
  83  *      domain. All other devices will world roam.
  84  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  85  *      settings, only the first radio will send a regulatory domain request
  86  *      and use strict settings. The rest of the radios are expected to follow.
  87  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  88  *      settings. All radios will adhere to this.
  89  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  90  *      domain settings, combined with secondary driver regulatory domain
  91  *      settings. The first radio will get a strict regulatory domain setting
  92  *      using the first driver regulatory request and the second radio will use
  93  *      non-strict settings using the second driver regulatory request. All
  94  *      other devices should follow the intersection created between the
  95  *      first two.
  96  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  97  *      at least 6 radios for a complete test. We will test in this order:
  98  *      1 - driver custom world regulatory domain
  99  *      2 - second custom world regulatory domain
 100  *      3 - first driver regulatory domain request
 101  *      4 - second driver regulatory domain request
 102  *      5 - strict regulatory domain settings using the third driver regulatory
 103  *          domain request
 104  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 105  *                 regulatory requests.
 106  */
 107 enum hwsim_regtest {
 108         HWSIM_REGTEST_DISABLED = 0,
 109         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 110         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 111         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 112         HWSIM_REGTEST_WORLD_ROAM = 4,
 113         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 114         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 115         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 116         HWSIM_REGTEST_STRICT_ALL = 8,
 117         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 118         HWSIM_REGTEST_ALL = 10,
 119 };
 120
 121 /* Set to one of the HWSIM_REGTEST_* values above */
 122 static int regtest = HWSIM_REGTEST_DISABLED;
 123 module_param(regtest, int, 0444);
 124 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 125
 126 static const char *hwsim_alpha2s[] = {
 127         "FI",
 128         "AL",
 129         "US",
 130         "DE",
 131         "JP",
 132         "AL",
 133 };
 134
 135 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 136         .n_reg_rules = 4,
 137         .alpha2 =  "99",
 138         .reg_rules = {
 139                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 140                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 141                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 142                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 143         }
 144 };
 145
 146 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 147         .n_reg_rules = 2,
 148         .alpha2 =  "99",
 149         .reg_rules = {
 150                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 151                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 152                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 153         }
 154 };
 155
 156 struct hwsim_vif_priv {
 157         u32 magic;
 158         u8 bssid[ETH_ALEN];
 159         bool assoc;
 160         u16 aid;
 161 };
 162
 163 #define HWSIM_VIF_MAGIC 0x69537748
 164
 165 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 166 {
 167         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 168         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 169 }
 170
 171 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 172 {
 173         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 174         vp->magic = HWSIM_VIF_MAGIC;
 175 }
 176
 177 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 178 {
 179         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 180         vp->magic = 0;
 181 }
 182
 183 struct hwsim_sta_priv {
 184         u32 magic;
 185 };
 186
 187 #define HWSIM_STA_MAGIC 0x6d537748
 188
 189 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 190 {
 191         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 192         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 193 }
 194
 195 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 196 {
 197         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 198         sp->magic = HWSIM_STA_MAGIC;
 199 }
 200
 201 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 202 {
 203         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 204         sp->magic = 0;
 205 }
 206
 207 static struct class *hwsim_class;
 208
 209 static struct net_device *hwsim_mon; /* global monitor netdev */
 210
 211 #define CHAN2G(_freq)  { \
 212         .band = IEEE80211_BAND_2GHZ, \
 213         .center_freq = (_freq), \
 214         .hw_value = (_freq), \
 215         .max_power = 20, \
 216 }
 217
 218 #define CHAN5G(_freq) { \
 219         .band = IEEE80211_BAND_5GHZ, \
 220         .center_freq = (_freq), \
 221         .hw_value = (_freq), \
 222         .max_power = 20, \
 223 }
 224
 225 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 226         CHAN2G(2412), /* Channel 1 */
 227         CHAN2G(2417), /* Channel 2 */
 228         CHAN2G(2422), /* Channel 3 */
 229         CHAN2G(2427), /* Channel 4 */
 230         CHAN2G(2432), /* Channel 5 */
 231         CHAN2G(2437), /* Channel 6 */
 232         CHAN2G(2442), /* Channel 7 */
 233         CHAN2G(2447), /* Channel 8 */
 234         CHAN2G(2452), /* Channel 9 */
 235         CHAN2G(2457), /* Channel 10 */
 236         CHAN2G(2462), /* Channel 11 */
 237         CHAN2G(2467), /* Channel 12 */
 238         CHAN2G(2472), /* Channel 13 */
 239         CHAN2G(2484), /* Channel 14 */
 240 };
 241
 242 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 243         CHAN5G(5180), /* Channel 36 */
 244         CHAN5G(5200), /* Channel 40 */
 245         CHAN5G(5220), /* Channel 44 */
 246         CHAN5G(5240), /* Channel 48 */
 247
 248         CHAN5G(5260), /* Channel 52 */
 249         CHAN5G(5280), /* Channel 56 */
 250         CHAN5G(5300), /* Channel 60 */
 251         CHAN5G(5320), /* Channel 64 */
 252
 253         CHAN5G(5500), /* Channel 100 */
 254         CHAN5G(5520), /* Channel 104 */
 255         CHAN5G(5540), /* Channel 108 */
 256         CHAN5G(5560), /* Channel 112 */
 257         CHAN5G(5580), /* Channel 116 */
 258         CHAN5G(5600), /* Channel 120 */
 259         CHAN5G(5620), /* Channel 124 */
 260         CHAN5G(5640), /* Channel 128 */
 261         CHAN5G(5660), /* Channel 132 */
 262         CHAN5G(5680), /* Channel 136 */
 263         CHAN5G(5700), /* Channel 140 */
 264
 265         CHAN5G(5745), /* Channel 149 */
 266         CHAN5G(5765), /* Channel 153 */
 267         CHAN5G(5785), /* Channel 157 */
 268         CHAN5G(5805), /* Channel 161 */
 269         CHAN5G(5825), /* Channel 165 */
 270 };
 271
 272 static const struct ieee80211_rate hwsim_rates[] = {
 273         { .bitrate = 10 },
 274         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 275         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 276         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 277         { .bitrate = 60 },
 278         { .bitrate = 90 },
 279         { .bitrate = 120 },
 280         { .bitrate = 180 },
 281         { .bitrate = 240 },
 282         { .bitrate = 360 },
 283         { .bitrate = 480 },
 284         { .bitrate = 540 }
 285 };
 286
 287 static spinlock_t hwsim_radio_lock;
 288 static struct list_head hwsim_radios;
 289
 290 struct mac80211_hwsim_data {
 291         struct list_head list;
 292         struct ieee80211_hw *hw;
 293         struct device *dev;
 294         struct ieee80211_supported_band bands[2];
 295         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 296         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 297         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 298
 299         struct mac_address addresses[2];
 300
 301         struct ieee80211_channel *channel;
 302         unsigned long beacon_int; /* in jiffies unit */
 303         unsigned int rx_filter;
 304         bool started, idle, scanning;
 305         struct mutex mutex;
 306         struct timer_list beacon_timer;
 307         enum ps_mode {
 308                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 309         } ps;
 310         bool ps_poll_pending;
 311         struct dentry *debugfs;
 312         struct dentry *debugfs_ps;
 313
 314         struct sk_buff_head pending;    /* packets pending */
 315         /*
 316          * Only radios in the same group can communicate together (the
 317          * channel has to match too). Each bit represents a group. A
 318          * radio can be in more then one group.
 319          */
 320         u64 group;
 321         struct dentry *debugfs_group;
 322
 323         int power_level;
 324 };
 325
 326
 327 struct hwsim_radiotap_hdr {
 328         struct ieee80211_radiotap_header hdr;
 329         u8 rt_flags;
 330         u8 rt_rate;
 331         __le16 rt_channel;
 332         __le16 rt_chbitmask;
 333 } __packed;
 334
 335 /* MAC80211_HWSIM netlinf family */
 336 static struct genl_family hwsim_genl_family = {
 337         .id = GENL_ID_GENERATE,
 338         .hdrsize = 0,
 339         .name = "MAC80211_HWSIM",
 340         .version = 1,
 341         .maxattr = HWSIM_ATTR_MAX,
 342 };
 343
 344 /* MAC80211_HWSIM netlink policy */
 345
 346 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 347         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 348                                        .len = 6*sizeof(u8) },
 349         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 350                                           .len = 6*sizeof(u8) },
 351         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 352                                .len = IEEE80211_MAX_DATA_LEN },
 353         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 354         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 355         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 356         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 357                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 358                                         struct hwsim_tx_rate)},
 359         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 360 };
 361
 362 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 363                                         struct net_device *dev)
 364 {
 365         /* TODO: allow packet injection */
 366         dev_kfree_skb(skb);
 367         return NETDEV_TX_OK;
 368 }
 369
 370
 371 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 372                                       struct sk_buff *tx_skb)
 373 {
 374         struct mac80211_hwsim_data *data = hw->priv;
 375         struct sk_buff *skb;
 376         struct hwsim_radiotap_hdr *hdr;
 377         u16 flags;
 378         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 379         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 380
 381         if (!netif_running(hwsim_mon))
 382                 return;
 383
 384         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 385         if (skb == NULL)
 386                 return;
 387
 388         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 389         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 390         hdr->hdr.it_pad = 0;
 391         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 392         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 393                                           (1 << IEEE80211_RADIOTAP_RATE) |
 394                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 395         hdr->rt_flags = 0;
 396         hdr->rt_rate = txrate->bitrate / 5;
 397         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 398         flags = IEEE80211_CHAN_2GHZ;
 399         if (txrate->flags & IEEE80211_RATE_ERP_G)
 400                 flags |= IEEE80211_CHAN_OFDM;
 401         else
 402                 flags |= IEEE80211_CHAN_CCK;
 403         hdr->rt_chbitmask = cpu_to_le16(flags);
 404
 405         skb->dev = hwsim_mon;
 406         skb_set_mac_header(skb, 0);
 407         skb->ip_summed = CHECKSUM_UNNECESSARY;
 408         skb->pkt_type = PACKET_OTHERHOST;
 409         skb->protocol = htons(ETH_P_802_2);
 410         memset(skb->cb, 0, sizeof(skb->cb));
 411         netif_rx(skb);
 412 }
 413
 414
 415 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 416 {
 417         struct mac80211_hwsim_data *data = hw->priv;
 418         struct sk_buff *skb;
 419         struct hwsim_radiotap_hdr *hdr;
 420         u16 flags;
 421         struct ieee80211_hdr *hdr11;
 422
 423         if (!netif_running(hwsim_mon))
 424                 return;
 425
 426         skb = dev_alloc_skb(100);
 427         if (skb == NULL)
 428                 return;
 429
 430         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 431         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 432         hdr->hdr.it_pad = 0;
 433         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 434         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 435                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 436         hdr->rt_flags = 0;
 437         hdr->rt_rate = 0;
 438         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 439         flags = IEEE80211_CHAN_2GHZ;
 440         hdr->rt_chbitmask = cpu_to_le16(flags);
 441
 442         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 443         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 444                                            IEEE80211_STYPE_ACK);
 445         hdr11->duration_id = cpu_to_le16(0);
 446         memcpy(hdr11->addr1, addr, ETH_ALEN);
 447
 448         skb->dev = hwsim_mon;
 449         skb_set_mac_header(skb, 0);
 450         skb->ip_summed = CHECKSUM_UNNECESSARY;
 451         skb->pkt_type = PACKET_OTHERHOST;
 452         skb->protocol = htons(ETH_P_802_2);
 453         memset(skb->cb, 0, sizeof(skb->cb));
 454         netif_rx(skb);
 455 }
 456
 457
 458 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 459                            struct sk_buff *skb)
 460 {
 461         switch (data->ps) {
 462         case PS_DISABLED:
 463                 return true;
 464         case PS_ENABLED:
 465                 return false;
 466         case PS_AUTO_POLL:
 467                 /* TODO: accept (some) Beacons by default and other frames only
 468                  * if pending PS-Poll has been sent */
 469                 return true;
 470         case PS_MANUAL_POLL:
 471                 /* Allow unicast frames to own address if there is a pending
 472                  * PS-Poll */
 473                 if (data->ps_poll_pending &&
 474                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 475                            ETH_ALEN) == 0) {
 476                         data->ps_poll_pending = false;
 477                         return true;
 478                 }
 479                 return false;
 480         }
 481
 482         return true;
 483 }
 484
 485
 486 struct mac80211_hwsim_addr_match_data {
 487         bool ret;
 488         const u8 *addr;
 489 };
 490
 491 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 492                                      struct ieee80211_vif *vif)
 493 {
 494         struct mac80211_hwsim_addr_match_data *md = data;
 495         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 496                 md->ret = true;
 497 }
 498
 499
 500 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 501                                       const u8 *addr)
 502 {
 503         struct mac80211_hwsim_addr_match_data md;
 504
 505         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 506                 return true;
 507
 508         md.ret = false;
 509         md.addr = addr;
 510         ieee80211_iterate_active_interfaces_atomic(data->hw,
 511                                                    mac80211_hwsim_addr_iter,
 512                                                    &md);
 513
 514         return md.ret;
 515 }
 516
 517 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 518                                        struct sk_buff *my_skb,
 519                                        int dst_pid)
 520 {
 521         struct sk_buff *skb;
 522         struct mac80211_hwsim_data *data = hw->priv;
 523         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 524         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 525         void *msg_head;
 526         unsigned int hwsim_flags = 0;
 527         int i;
 528         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 529
 530         if (data->idle) {
 531                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 532                 dev_kfree_skb(my_skb);
 533                 return;
 534         }
 535
 536         if (data->ps != PS_DISABLED)
 537                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 538         /* If the queue contains MAX_QUEUE skb's drop some */
 539         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 540                 /* Droping until WARN_QUEUE level */
 541                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 542                         skb_dequeue(&data->pending);
 543         }
 544
 545         skb = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
 546         if (skb == NULL)
 547                 goto nla_put_failure;
 548
 549         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 550                                HWSIM_CMD_FRAME);
 551         if (msg_head == NULL) {
 552                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 553                 goto nla_put_failure;
 554         }
 555
 556         NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 557                      sizeof(struct mac_address), data->addresses[1].addr);
 558
 559         /* We get the skb->data */
 560         NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
 561
 562         /* We get the flags for this transmission, and we translate them to
 563            wmediumd flags  */
 564
 565         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 566                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 567
 568         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 569                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 570
 571         NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
 572
 573         /* We get the tx control (rate and retries) info*/
 574
 575         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 576                 tx_attempts[i].idx = info->status.rates[i].idx;
 577                 tx_attempts[i].count = info->status.rates[i].count;
 578         }
 579
 580         NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
 581                      sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 582                      tx_attempts);
 583
 584         /* We create a cookie to identify this skb */
 585         NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
 586
 587         genlmsg_end(skb, msg_head);
 588         genlmsg_unicast(&init_net, skb, dst_pid);
 589
 590         /* Enqueue the packet */
 591         skb_queue_tail(&data->pending, my_skb);
 592         return;
 593
 594 nla_put_failure:
 595         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
 596 }
 597
 598 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 599                                           struct sk_buff *skb)
 600 {
 601         struct mac80211_hwsim_data *data = hw->priv, *data2;
 602         bool ack = false;
 603         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 604         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 605         struct ieee80211_rx_status rx_status;
 606
 607         if (data->idle) {
 608                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 609                 return false;
 610         }
 611
 612         memset(&rx_status, 0, sizeof(rx_status));
 613         /* TODO: set mactime */
 614         rx_status.freq = data->channel->center_freq;
 615         rx_status.band = data->channel->band;
 616         rx_status.rate_idx = info->control.rates[0].idx;
 617         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 618                 rx_status.flag |= RX_FLAG_HT;
 619         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 620                 rx_status.flag |= RX_FLAG_40MHZ;
 621         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 622                 rx_status.flag |= RX_FLAG_SHORT_GI;
 623         /* TODO: simulate real signal strength (and optional packet loss) */
 624         rx_status.signal = data->power_level - 50;
 625
 626         if (data->ps != PS_DISABLED)
 627                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 628
 629         /* release the skb's source info */
 630         skb_orphan(skb);
 631         skb_dst_drop(skb);
 632         skb->mark = 0;
 633         secpath_reset(skb);
 634         nf_reset(skb);
 635
 636         /* Copy skb to all enabled radios that are on the current frequency */
 637         spin_lock(&hwsim_radio_lock);
 638         list_for_each_entry(data2, &hwsim_radios, list) {
 639                 struct sk_buff *nskb;
 640
 641                 if (data == data2)
 642                         continue;
 643
 644                 if (data2->idle || !data2->started ||
 645                     !hwsim_ps_rx_ok(data2, skb) ||
 646                     !data->channel || !data2->channel ||
 647                     data->channel->center_freq != data2->channel->center_freq ||
 648                     !(data->group & data2->group))
 649                         continue;
 650
 651                 nskb = skb_copy(skb, GFP_ATOMIC);
 652                 if (nskb == NULL)
 653                         continue;
 654
 655                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 656                         ack = true;
 657                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 658                 ieee80211_rx_irqsafe(data2->hw, nskb);
 659         }
 660         spin_unlock(&hwsim_radio_lock);
 661
 662         return ack;
 663 }
 664
 665 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 666 {
 667         bool ack;
 668         struct ieee80211_tx_info *txi;
 669         u32 _pid;
 670
 671         mac80211_hwsim_monitor_rx(hw, skb);
 672
 673         if (skb->len < 10) {
 674                 /* Should not happen; just a sanity check for addr1 use */
 675                 dev_kfree_skb(skb);
 676                 return;
 677         }
 678
 679         /* wmediumd mode check */
 680         _pid = ACCESS_ONCE(wmediumd_pid);
 681
 682         if (_pid)
 683                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 684
 685         /* NO wmediumd detected, perfect medium simulation */
 686         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
 687
 688         if (ack && skb->len >= 16) {
 689                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 690                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 691         }
 692
 693         txi = IEEE80211_SKB_CB(skb);
 694
 695         if (txi->control.vif)
 696                 hwsim_check_magic(txi->control.vif);
 697         if (txi->control.sta)
 698                 hwsim_check_sta_magic(txi->control.sta);
 699
 700         ieee80211_tx_info_clear_status(txi);
 701         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 702                 txi->flags |= IEEE80211_TX_STAT_ACK;
 703         ieee80211_tx_status_irqsafe(hw, skb);
 704 }
 705
 706
 707 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 708 {
 709         struct mac80211_hwsim_data *data = hw->priv;
 710         wiphy_debug(hw->wiphy, "%s\n", __func__);
 711         data->started = true;
 712         return 0;
 713 }
 714
 715
 716 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 717 {
 718         struct mac80211_hwsim_data *data = hw->priv;
 719         data->started = false;
 720         del_timer(&data->beacon_timer);
 721         wiphy_debug(hw->wiphy, "%s\n", __func__);
 722 }
 723
 724
 725 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 726                                         struct ieee80211_vif *vif)
 727 {
 728         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 729                     __func__, ieee80211_vif_type_p2p(vif),
 730                     vif->addr);
 731         hwsim_set_magic(vif);
 732         return 0;
 733 }
 734
 735
 736 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 737                                            struct ieee80211_vif *vif,
 738                                            enum nl80211_iftype newtype,
 739                                            bool newp2p)
 740 {
 741         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 742         wiphy_debug(hw->wiphy,
 743                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 744                     __func__, ieee80211_vif_type_p2p(vif),
 745                     newtype, vif->addr);
 746         hwsim_check_magic(vif);
 747
 748         return 0;
 749 }
 750
 751 static void mac80211_hwsim_remove_interface(
 752         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 753 {
 754         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 755                     __func__, ieee80211_vif_type_p2p(vif),
 756                     vif->addr);
 757         hwsim_check_magic(vif);
 758         hwsim_clear_magic(vif);
 759 }
 760
 761
 762 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 763                                      struct ieee80211_vif *vif)
 764 {
 765         struct ieee80211_hw *hw = arg;
 766         struct sk_buff *skb;
 767         struct ieee80211_tx_info *info;
 768         u32 _pid;
 769
 770         hwsim_check_magic(vif);
 771
 772         if (vif->type != NL80211_IFTYPE_AP &&
 773             vif->type != NL80211_IFTYPE_MESH_POINT &&
 774             vif->type != NL80211_IFTYPE_ADHOC)
 775                 return;
 776
 777         skb = ieee80211_beacon_get(hw, vif);
 778         if (skb == NULL)
 779                 return;
 780         info = IEEE80211_SKB_CB(skb);
 781
 782         mac80211_hwsim_monitor_rx(hw, skb);
 783
 784         /* wmediumd mode check */
 785         _pid = ACCESS_ONCE(wmediumd_pid);
 786
 787         if (_pid)
 788                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 789
 790         mac80211_hwsim_tx_frame_no_nl(hw, skb);
 791         dev_kfree_skb(skb);
 792 }
 793
 794
 795 static void mac80211_hwsim_beacon(unsigned long arg)
 796 {
 797         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 798         struct mac80211_hwsim_data *data = hw->priv;
 799
 800         if (!data->started)
 801                 return;
 802
 803         ieee80211_iterate_active_interfaces_atomic(
 804                 hw, mac80211_hwsim_beacon_tx, hw);
 805
 806         data->beacon_timer.expires = jiffies + data->beacon_int;
 807         add_timer(&data->beacon_timer);
 808 }
 809
 810 static const char *hwsim_chantypes[] = {
 811         [NL80211_CHAN_NO_HT] = "noht",
 812         [NL80211_CHAN_HT20] = "ht20",
 813         [NL80211_CHAN_HT40MINUS] = "ht40-",
 814         [NL80211_CHAN_HT40PLUS] = "ht40+",
 815 };
 816
 817 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 818 {
 819         struct mac80211_hwsim_data *data = hw->priv;
 820         struct ieee80211_conf *conf = &hw->conf;
 821         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 822                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 823                 [IEEE80211_SMPS_OFF] = "off",
 824                 [IEEE80211_SMPS_STATIC] = "static",
 825                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 826         };
 827
 828         wiphy_debug(hw->wiphy,
 829                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 830                     __func__,
 831                     conf->channel->center_freq,
 832                     hwsim_chantypes[conf->channel_type],
 833                     !!(conf->flags & IEEE80211_CONF_IDLE),
 834                     !!(conf->flags & IEEE80211_CONF_PS),
 835                     smps_modes[conf->smps_mode]);
 836
 837         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 838
 839         data->channel = conf->channel;
 840         data->power_level = conf->power_level;
 841         if (!data->started || !data->beacon_int)
 842                 del_timer(&data->beacon_timer);
 843         else
 844                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 845
 846         return 0;
 847 }
 848
 849
 850 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 851                                             unsigned int changed_flags,
 852                                             unsigned int *total_flags,u64 multicast)
 853 {
 854         struct mac80211_hwsim_data *data = hw->priv;
 855
 856         wiphy_debug(hw->wiphy, "%s\n", __func__);
 857
 858         data->rx_filter = 0;
 859         if (*total_flags & FIF_PROMISC_IN_BSS)
 860                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 861         if (*total_flags & FIF_ALLMULTI)
 862                 data->rx_filter |= FIF_ALLMULTI;
 863
 864         *total_flags = data->rx_filter;
 865 }
 866
 867 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 868                                             struct ieee80211_vif *vif,
 869                                             struct ieee80211_bss_conf *info,
 870                                             u32 changed)
 871 {
 872         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 873         struct mac80211_hwsim_data *data = hw->priv;
 874
 875         hwsim_check_magic(vif);
 876
 877         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
 878
 879         if (changed & BSS_CHANGED_BSSID) {
 880                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
 881                             __func__, info->bssid);
 882                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 883         }
 884
 885         if (changed & BSS_CHANGED_ASSOC) {
 886                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
 887                             info->assoc, info->aid);
 888                 vp->assoc = info->assoc;
 889                 vp->aid = info->aid;
 890         }
 891
 892         if (changed & BSS_CHANGED_BEACON_INT) {
 893                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
 894                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 895                 if (WARN_ON(!data->beacon_int))
 896                         data->beacon_int = 1;
 897                 if (data->started)
 898                         mod_timer(&data->beacon_timer,
 899                                   jiffies + data->beacon_int);
 900         }
 901
 902         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 903                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
 904                             info->use_cts_prot);
 905         }
 906
 907         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 908                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
 909                             info->use_short_preamble);
 910         }
 911
 912         if (changed & BSS_CHANGED_ERP_SLOT) {
 913                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
 914         }
 915
 916         if (changed & BSS_CHANGED_HT) {
 917                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
 918                             info->ht_operation_mode,
 919                             hwsim_chantypes[info->channel_type]);
 920         }
 921
 922         if (changed & BSS_CHANGED_BASIC_RATES) {
 923                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
 924                             (unsigned long long) info->basic_rates);
 925         }
 926 }
 927
 928 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 929                                   struct ieee80211_vif *vif,
 930                                   struct ieee80211_sta *sta)
 931 {
 932         hwsim_check_magic(vif);
 933         hwsim_set_sta_magic(sta);
 934
 935         return 0;
 936 }
 937
 938 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 939                                      struct ieee80211_vif *vif,
 940                                      struct ieee80211_sta *sta)
 941 {
 942         hwsim_check_magic(vif);
 943         hwsim_clear_sta_magic(sta);
 944
 945         return 0;
 946 }
 947
 948 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 949                                       struct ieee80211_vif *vif,
 950                                       enum sta_notify_cmd cmd,
 951                                       struct ieee80211_sta *sta)
 952 {
 953         hwsim_check_magic(vif);
 954
 955         switch (cmd) {
 956         case STA_NOTIFY_SLEEP:
 957         case STA_NOTIFY_AWAKE:
 958                 /* TODO: make good use of these flags */
 959                 break;
 960         default:
 961                 WARN(1, "Invalid sta notify: %d\n", cmd);
 962                 break;
 963         }
 964 }
 965
 966 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 967                                   struct ieee80211_sta *sta,
 968                                   bool set)
 969 {
 970         hwsim_check_sta_magic(sta);
 971         return 0;
 972 }
 973
 974 static int mac80211_hwsim_conf_tx(
 975         struct ieee80211_hw *hw,
 976         struct ieee80211_vif *vif, u16 queue,
 977         const struct ieee80211_tx_queue_params *params)
 978 {
 979         wiphy_debug(hw->wiphy,
 980                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
 981                     __func__, queue,
 982                     params->txop, params->cw_min,
 983                     params->cw_max, params->aifs);
 984         return 0;
 985 }
 986
 987 static int mac80211_hwsim_get_survey(
 988         struct ieee80211_hw *hw, int idx,
 989         struct survey_info *survey)
 990 {
 991         struct ieee80211_conf *conf = &hw->conf;
 992
 993         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
 994
 995         if (idx != 0)
 996                 return -ENOENT;
 997
 998         /* Current channel */
 999         survey->channel = conf->channel;
1000
1001         /*
1002          * Magically conjured noise level --- this is only ok for simulated hardware.
1003          *
1004          * A real driver which cannot determine the real channel noise MUST NOT
1005          * report any noise, especially not a magically conjured one :-)
1006          */
1007         survey->filled = SURVEY_INFO_NOISE_DBM;
1008         survey->noise = -92;
1009
1010         return 0;
1011 }
1012
1013 #ifdef CONFIG_NL80211_TESTMODE
1014 /*
1015  * This section contains example code for using netlink
1016  * attributes with the testmode command in nl80211.
1017  */
1018
1019 /* These enums need to be kept in sync with userspace */
1020 enum hwsim_testmode_attr {
1021         __HWSIM_TM_ATTR_INVALID = 0,
1022         HWSIM_TM_ATTR_CMD       = 1,
1023         HWSIM_TM_ATTR_PS        = 2,
1024
1025         /* keep last */
1026         __HWSIM_TM_ATTR_AFTER_LAST,
1027         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1028 };
1029
1030 enum hwsim_testmode_cmd {
1031         HWSIM_TM_CMD_SET_PS             = 0,
1032         HWSIM_TM_CMD_GET_PS             = 1,
1033 };
1034
1035 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1036         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1037         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1038 };
1039
1040 static int hwsim_fops_ps_write(void *dat, u64 val);
1041
1042 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1043                                        void *data, int len)
1044 {
1045         struct mac80211_hwsim_data *hwsim = hw->priv;
1046         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1047         struct sk_buff *skb;
1048         int err, ps;
1049
1050         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1051                         hwsim_testmode_policy);
1052         if (err)
1053                 return err;
1054
1055         if (!tb[HWSIM_TM_ATTR_CMD])
1056                 return -EINVAL;
1057
1058         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1059         case HWSIM_TM_CMD_SET_PS:
1060                 if (!tb[HWSIM_TM_ATTR_PS])
1061                         return -EINVAL;
1062                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1063                 return hwsim_fops_ps_write(hwsim, ps);
1064         case HWSIM_TM_CMD_GET_PS:
1065                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1066                                                 nla_total_size(sizeof(u32)));
1067                 if (!skb)
1068                         return -ENOMEM;
1069                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
1070                 return cfg80211_testmode_reply(skb);
1071         default:
1072                 return -EOPNOTSUPP;
1073         }
1074
1075  nla_put_failure:
1076         kfree_skb(skb);
1077         return -ENOBUFS;
1078 }
1079 #endif
1080
1081 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1082                                        struct ieee80211_vif *vif,
1083                                        enum ieee80211_ampdu_mlme_action action,
1084                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1085                                        u8 buf_size)
1086 {
1087         switch (action) {
1088         case IEEE80211_AMPDU_TX_START:
1089                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1090                 break;
1091         case IEEE80211_AMPDU_TX_STOP:
1092                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1093                 break;
1094         case IEEE80211_AMPDU_TX_OPERATIONAL:
1095                 break;
1096         case IEEE80211_AMPDU_RX_START:
1097         case IEEE80211_AMPDU_RX_STOP:
1098                 break;
1099         default:
1100                 return -EOPNOTSUPP;
1101         }
1102
1103         return 0;
1104 }
1105
1106 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1107 {
1108         /* Not implemented, queues only on kernel side */
1109 }
1110
1111 struct hw_scan_done {
1112         struct delayed_work w;
1113         struct ieee80211_hw *hw;
1114 };
1115
1116 static void hw_scan_done(struct work_struct *work)
1117 {
1118         struct hw_scan_done *hsd =
1119                 container_of(work, struct hw_scan_done, w.work);
1120
1121         ieee80211_scan_completed(hsd->hw, false);
1122         kfree(hsd);
1123 }
1124
1125 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1126                                   struct ieee80211_vif *vif,
1127                                   struct cfg80211_scan_request *req)
1128 {
1129         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1130         int i;
1131
1132         if (!hsd)
1133                 return -ENOMEM;
1134
1135         hsd->hw = hw;
1136         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1137
1138         printk(KERN_DEBUG "hwsim hw_scan request\n");
1139         for (i = 0; i < req->n_channels; i++)
1140                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1141                         req->channels[i]->center_freq);
1142         print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1143                         16, 1, req->ie, req->ie_len, 1);
1144
1145         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1146
1147         return 0;
1148 }
1149
1150 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1151 {
1152         struct mac80211_hwsim_data *hwsim = hw->priv;
1153
1154         mutex_lock(&hwsim->mutex);
1155
1156         if (hwsim->scanning) {
1157                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1158                 goto out;
1159         }
1160
1161         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1162         hwsim->scanning = true;
1163
1164 out:
1165         mutex_unlock(&hwsim->mutex);
1166 }
1167
1168 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1169 {
1170         struct mac80211_hwsim_data *hwsim = hw->priv;
1171
1172         mutex_lock(&hwsim->mutex);
1173
1174         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1175         hwsim->scanning = false;
1176
1177         mutex_unlock(&hwsim->mutex);
1178 }
1179
1180 static struct ieee80211_ops mac80211_hwsim_ops =
1181 {
1182         .tx = mac80211_hwsim_tx,
1183         .start = mac80211_hwsim_start,
1184         .stop = mac80211_hwsim_stop,
1185         .add_interface = mac80211_hwsim_add_interface,
1186         .change_interface = mac80211_hwsim_change_interface,
1187         .remove_interface = mac80211_hwsim_remove_interface,
1188         .config = mac80211_hwsim_config,
1189         .configure_filter = mac80211_hwsim_configure_filter,
1190         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1191         .sta_add = mac80211_hwsim_sta_add,
1192         .sta_remove = mac80211_hwsim_sta_remove,
1193         .sta_notify = mac80211_hwsim_sta_notify,
1194         .set_tim = mac80211_hwsim_set_tim,
1195         .conf_tx = mac80211_hwsim_conf_tx,
1196         .get_survey = mac80211_hwsim_get_survey,
1197         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1198         .ampdu_action = mac80211_hwsim_ampdu_action,
1199         .sw_scan_start = mac80211_hwsim_sw_scan,
1200         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1201         .flush = mac80211_hwsim_flush,
1202 };
1203
1204
1205 static void mac80211_hwsim_free(void)
1206 {
1207         struct list_head tmplist, *i, *tmp;
1208         struct mac80211_hwsim_data *data, *tmpdata;
1209
1210         INIT_LIST_HEAD(&tmplist);
1211
1212         spin_lock_bh(&hwsim_radio_lock);
1213         list_for_each_safe(i, tmp, &hwsim_radios)
1214                 list_move(i, &tmplist);
1215         spin_unlock_bh(&hwsim_radio_lock);
1216
1217         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1218                 debugfs_remove(data->debugfs_group);
1219                 debugfs_remove(data->debugfs_ps);
1220                 debugfs_remove(data->debugfs);
1221                 ieee80211_unregister_hw(data->hw);
1222                 device_unregister(data->dev);
1223                 ieee80211_free_hw(data->hw);
1224         }
1225         class_destroy(hwsim_class);
1226 }
1227
1228
1229 static struct device_driver mac80211_hwsim_driver = {
1230         .name = "mac80211_hwsim"
1231 };
1232
1233 static const struct net_device_ops hwsim_netdev_ops = {
1234         .ndo_start_xmit         = hwsim_mon_xmit,
1235         .ndo_change_mtu         = eth_change_mtu,
1236         .ndo_set_mac_address    = eth_mac_addr,
1237         .ndo_validate_addr      = eth_validate_addr,
1238 };
1239
1240 static void hwsim_mon_setup(struct net_device *dev)
1241 {
1242         dev->netdev_ops = &hwsim_netdev_ops;
1243         dev->destructor = free_netdev;
1244         ether_setup(dev);
1245         dev->tx_queue_len = 0;
1246         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1247         memset(dev->dev_addr, 0, ETH_ALEN);
1248         dev->dev_addr[0] = 0x12;
1249 }
1250
1251
1252 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1253 {
1254         struct mac80211_hwsim_data *data = dat;
1255         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1256         struct sk_buff *skb;
1257         struct ieee80211_pspoll *pspoll;
1258         u32 _pid;
1259
1260         if (!vp->assoc)
1261                 return;
1262
1263         wiphy_debug(data->hw->wiphy,
1264                     "%s: send PS-Poll to %pM for aid %d\n",
1265                     __func__, vp->bssid, vp->aid);
1266
1267         skb = dev_alloc_skb(sizeof(*pspoll));
1268         if (!skb)
1269                 return;
1270         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1271         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1272                                             IEEE80211_STYPE_PSPOLL |
1273                                             IEEE80211_FCTL_PM);
1274         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1275         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1276         memcpy(pspoll->ta, mac, ETH_ALEN);
1277
1278         /* wmediumd mode check */
1279         _pid = ACCESS_ONCE(wmediumd_pid);
1280
1281         if (_pid)
1282                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1283
1284         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1285                 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1286         dev_kfree_skb(skb);
1287 }
1288
1289
1290 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1291                                 struct ieee80211_vif *vif, int ps)
1292 {
1293         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1294         struct sk_buff *skb;
1295         struct ieee80211_hdr *hdr;
1296         u32 _pid;
1297
1298         if (!vp->assoc)
1299                 return;
1300
1301         wiphy_debug(data->hw->wiphy,
1302                     "%s: send data::nullfunc to %pM ps=%d\n",
1303                     __func__, vp->bssid, ps);
1304
1305         skb = dev_alloc_skb(sizeof(*hdr));
1306         if (!skb)
1307                 return;
1308         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1309         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1310                                          IEEE80211_STYPE_NULLFUNC |
1311                                          (ps ? IEEE80211_FCTL_PM : 0));
1312         hdr->duration_id = cpu_to_le16(0);
1313         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1314         memcpy(hdr->addr2, mac, ETH_ALEN);
1315         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1316
1317         /* wmediumd mode check */
1318         _pid = ACCESS_ONCE(wmediumd_pid);
1319
1320         if (_pid)
1321                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1322
1323         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1324                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1325         dev_kfree_skb(skb);
1326 }
1327
1328
1329 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1330                                    struct ieee80211_vif *vif)
1331 {
1332         struct mac80211_hwsim_data *data = dat;
1333         hwsim_send_nullfunc(data, mac, vif, 1);
1334 }
1335
1336
1337 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1338                                       struct ieee80211_vif *vif)
1339 {
1340         struct mac80211_hwsim_data *data = dat;
1341         hwsim_send_nullfunc(data, mac, vif, 0);
1342 }
1343
1344
1345 static int hwsim_fops_ps_read(void *dat, u64 *val)
1346 {
1347         struct mac80211_hwsim_data *data = dat;
1348         *val = data->ps;
1349         return 0;
1350 }
1351
1352 static int hwsim_fops_ps_write(void *dat, u64 val)
1353 {
1354         struct mac80211_hwsim_data *data = dat;
1355         enum ps_mode old_ps;
1356
1357         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1358             val != PS_MANUAL_POLL)
1359                 return -EINVAL;
1360
1361         old_ps = data->ps;
1362         data->ps = val;
1363
1364         if (val == PS_MANUAL_POLL) {
1365                 ieee80211_iterate_active_interfaces(data->hw,
1366                                                     hwsim_send_ps_poll, data);
1367                 data->ps_poll_pending = true;
1368         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1369                 ieee80211_iterate_active_interfaces(data->hw,
1370                                                     hwsim_send_nullfunc_ps,
1371                                                     data);
1372         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1373                 ieee80211_iterate_active_interfaces(data->hw,
1374                                                     hwsim_send_nullfunc_no_ps,
1375                                                     data);
1376         }
1377
1378         return 0;
1379 }
1380
1381 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1382                         "%llu\n");
1383
1384
1385 static int hwsim_fops_group_read(void *dat, u64 *val)
1386 {
1387         struct mac80211_hwsim_data *data = dat;
1388         *val = data->group;
1389         return 0;
1390 }
1391
1392 static int hwsim_fops_group_write(void *dat, u64 val)
1393 {
1394         struct mac80211_hwsim_data *data = dat;
1395         data->group = val;
1396         return 0;
1397 }
1398
1399 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1400                         hwsim_fops_group_read, hwsim_fops_group_write,
1401                         "%llx\n");
1402
1403 struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1404                              struct mac_address *addr)
1405 {
1406         struct mac80211_hwsim_data *data;
1407         bool _found = false;
1408
1409         spin_lock_bh(&hwsim_radio_lock);
1410         list_for_each_entry(data, &hwsim_radios, list) {
1411                 if (memcmp(data->addresses[1].addr, addr,
1412                           sizeof(struct mac_address)) == 0) {
1413                         _found = true;
1414                         break;
1415                 }
1416         }
1417         spin_unlock_bh(&hwsim_radio_lock);
1418
1419         if (!_found)
1420                 return NULL;
1421
1422         return data;
1423 }
1424
1425 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1426                                            struct genl_info *info)
1427 {
1428
1429         struct ieee80211_hdr *hdr;
1430         struct mac80211_hwsim_data *data2;
1431         struct ieee80211_tx_info *txi;
1432         struct hwsim_tx_rate *tx_attempts;
1433         struct sk_buff __user *ret_skb;
1434         struct sk_buff *skb, *tmp;
1435         struct mac_address *src;
1436         unsigned int hwsim_flags;
1437
1438         int i;
1439         bool found = false;
1440
1441         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1442            !info->attrs[HWSIM_ATTR_FLAGS] ||
1443            !info->attrs[HWSIM_ATTR_COOKIE] ||
1444            !info->attrs[HWSIM_ATTR_TX_INFO])
1445                 goto out;
1446
1447         src = (struct mac_address *)nla_data(
1448                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1449         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1450
1451         ret_skb = (struct sk_buff __user *)
1452                   (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1453
1454         data2 = get_hwsim_data_ref_from_addr(src);
1455
1456         if (data2 == NULL)
1457                 goto out;
1458
1459         /* look for the skb matching the cookie passed back from user */
1460         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1461                 if (skb == ret_skb) {
1462                         skb_unlink(skb, &data2->pending);
1463                         found = true;
1464                         break;
1465                 }
1466         }
1467
1468         /* not found */
1469         if (!found)
1470                 goto out;
1471
1472         /* Tx info received because the frame was broadcasted on user space,
1473          so we get all the necessary info: tx attempts and skb control buff */
1474
1475         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1476                        info->attrs[HWSIM_ATTR_TX_INFO]);
1477
1478         /* now send back TX status */
1479         txi = IEEE80211_SKB_CB(skb);
1480
1481         if (txi->control.vif)
1482                 hwsim_check_magic(txi->control.vif);
1483         if (txi->control.sta)
1484                 hwsim_check_sta_magic(txi->control.sta);
1485
1486         ieee80211_tx_info_clear_status(txi);
1487
1488         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1489                 txi->status.rates[i].idx = tx_attempts[i].idx;
1490                 txi->status.rates[i].count = tx_attempts[i].count;
1491                 /*txi->status.rates[i].flags = 0;*/
1492         }
1493
1494         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1495
1496         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1497            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1498                 if (skb->len >= 16) {
1499                         hdr = (struct ieee80211_hdr *) skb->data;
1500                         mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1501                 }
1502         }
1503         ieee80211_tx_status_irqsafe(data2->hw, skb);
1504         return 0;
1505 out:
1506         return -EINVAL;
1507
1508 }
1509
1510 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1511                                           struct genl_info *info)
1512 {
1513
1514         struct mac80211_hwsim_data  *data2;
1515         struct ieee80211_rx_status rx_status;
1516         struct mac_address *dst;
1517         int frame_data_len;
1518         char *frame_data;
1519         struct sk_buff *skb = NULL;
1520
1521         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1522            !info->attrs[HWSIM_ATTR_FRAME] ||
1523            !info->attrs[HWSIM_ATTR_RX_RATE] ||
1524            !info->attrs[HWSIM_ATTR_SIGNAL])
1525                 goto out;
1526
1527         dst = (struct mac_address *)nla_data(
1528                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1529
1530         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1531         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1532
1533         /* Allocate new skb here */
1534         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1535         if (skb == NULL)
1536                 goto err;
1537
1538         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1539                 /* Copy the data */
1540                 memcpy(skb_put(skb, frame_data_len), frame_data,
1541                        frame_data_len);
1542         } else
1543                 goto err;
1544
1545         data2 = get_hwsim_data_ref_from_addr(dst);
1546
1547         if (data2 == NULL)
1548                 goto out;
1549
1550         /* check if radio is configured properly */
1551
1552         if (data2->idle || !data2->started || !data2->channel)
1553                 goto out;
1554
1555         /*A frame is received from user space*/
1556         memset(&rx_status, 0, sizeof(rx_status));
1557         rx_status.freq = data2->channel->center_freq;
1558         rx_status.band = data2->channel->band;
1559         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1560         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1561
1562         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1563         ieee80211_rx_irqsafe(data2->hw, skb);
1564
1565         return 0;
1566 err:
1567         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1568         goto out;
1569 out:
1570         dev_kfree_skb(skb);
1571         return -EINVAL;
1572 }
1573
1574 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1575                                       struct genl_info *info)
1576 {
1577         if (info == NULL)
1578                 goto out;
1579
1580         wmediumd_pid = info->snd_pid;
1581
1582         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1583         "switching to wmediumd mode with pid %d\n", info->snd_pid);
1584
1585         return 0;
1586 out:
1587         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1588         return -EINVAL;
1589 }
1590
1591 /* Generic Netlink operations array */
1592 static struct genl_ops hwsim_ops[] = {
1593         {
1594                 .cmd = HWSIM_CMD_REGISTER,
1595                 .policy = hwsim_genl_policy,
1596                 .doit = hwsim_register_received_nl,
1597                 .flags = GENL_ADMIN_PERM,
1598         },
1599         {
1600                 .cmd = HWSIM_CMD_FRAME,
1601                 .policy = hwsim_genl_policy,
1602                 .doit = hwsim_cloned_frame_received_nl,
1603         },
1604         {
1605                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1606                 .policy = hwsim_genl_policy,
1607                 .doit = hwsim_tx_info_frame_received_nl,
1608         },
1609 };
1610
1611 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1612                                          unsigned long state,
1613                                          void *_notify)
1614 {
1615         struct netlink_notify *notify = _notify;
1616
1617         if (state != NETLINK_URELEASE)
1618                 return NOTIFY_DONE;
1619
1620         if (notify->pid == wmediumd_pid) {
1621                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1622                        " socket, switching to perfect channel medium\n");
1623                 wmediumd_pid = 0;
1624         }
1625         return NOTIFY_DONE;
1626
1627 }
1628
1629 static struct notifier_block hwsim_netlink_notifier = {
1630         .notifier_call = mac80211_hwsim_netlink_notify,
1631 };
1632
1633 static int hwsim_init_netlink(void)
1634 {
1635         int rc;
1636         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1637
1638         rc = genl_register_family_with_ops(&hwsim_genl_family,
1639                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1640         if (rc)
1641                 goto failure;
1642
1643         rc = netlink_register_notifier(&hwsim_netlink_notifier);
1644         if (rc)
1645                 goto failure;
1646
1647         return 0;
1648
1649 failure:
1650         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1651         return -EINVAL;
1652 }
1653
1654 static void hwsim_exit_netlink(void)
1655 {
1656         int ret;
1657
1658         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1659         /* unregister the notifier */
1660         netlink_unregister_notifier(&hwsim_netlink_notifier);
1661         /* unregister the family */
1662         ret = genl_unregister_family(&hwsim_genl_family);
1663         if (ret)
1664                 printk(KERN_DEBUG "mac80211_hwsim: "
1665                        "unregister family %i\n", ret);
1666 }
1667
1668 static int __init init_mac80211_hwsim(void)
1669 {
1670         int i, err = 0;
1671         u8 addr[ETH_ALEN];
1672         struct mac80211_hwsim_data *data;
1673         struct ieee80211_hw *hw;
1674         enum ieee80211_band band;
1675
1676         if (radios < 1 || radios > 100)
1677                 return -EINVAL;
1678
1679         if (fake_hw_scan) {
1680                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1681                 mac80211_hwsim_ops.sw_scan_start = NULL;
1682                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1683         }
1684
1685         spin_lock_init(&hwsim_radio_lock);
1686         INIT_LIST_HEAD(&hwsim_radios);
1687
1688         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1689         if (IS_ERR(hwsim_class))
1690                 return PTR_ERR(hwsim_class);
1691
1692         memset(addr, 0, ETH_ALEN);
1693         addr[0] = 0x02;
1694
1695         for (i = 0; i < radios; i++) {
1696                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1697                        i);
1698                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1699                 if (!hw) {
1700                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1701                                "failed\n");
1702                         err = -ENOMEM;
1703                         goto failed;
1704                 }
1705                 data = hw->priv;
1706                 data->hw = hw;
1707
1708                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1709                                           "hwsim%d", i);
1710                 if (IS_ERR(data->dev)) {
1711                         printk(KERN_DEBUG
1712                                "mac80211_hwsim: device_create "
1713                                "failed (%ld)\n", PTR_ERR(data->dev));
1714                         err = -ENOMEM;
1715                         goto failed_drvdata;
1716                 }
1717                 data->dev->driver = &mac80211_hwsim_driver;
1718                 skb_queue_head_init(&data->pending);
1719
1720                 SET_IEEE80211_DEV(hw, data->dev);
1721                 addr[3] = i >> 8;
1722                 addr[4] = i;
1723                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1724                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1725                 data->addresses[1].addr[0] |= 0x40;
1726                 hw->wiphy->n_addresses = 2;
1727                 hw->wiphy->addresses = data->addresses;
1728
1729                 if (fake_hw_scan) {
1730                         hw->wiphy->max_scan_ssids = 255;
1731                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1732                 }
1733
1734                 hw->channel_change_time = 1;
1735                 hw->queues = 4;
1736                 hw->wiphy->interface_modes =
1737                         BIT(NL80211_IFTYPE_STATION) |
1738                         BIT(NL80211_IFTYPE_AP) |
1739                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1740                         BIT(NL80211_IFTYPE_P2P_GO) |
1741                         BIT(NL80211_IFTYPE_ADHOC) |
1742                         BIT(NL80211_IFTYPE_MESH_POINT);
1743
1744                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1745                             IEEE80211_HW_SIGNAL_DBM |
1746                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1747                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1748                             IEEE80211_HW_AMPDU_AGGREGATION;
1749
1750                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
1751
1752                 /* ask mac80211 to reserve space for magic */
1753                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1754                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1755
1756                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1757                         sizeof(hwsim_channels_2ghz));
1758                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1759                         sizeof(hwsim_channels_5ghz));
1760                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1761
1762                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1763                         struct ieee80211_supported_band *sband = &data->bands[band];
1764                         switch (band) {
1765                         case IEEE80211_BAND_2GHZ:
1766                                 sband->channels = data->channels_2ghz;
1767                                 sband->n_channels =
1768                                         ARRAY_SIZE(hwsim_channels_2ghz);
1769                                 sband->bitrates = data->rates;
1770                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1771                                 break;
1772                         case IEEE80211_BAND_5GHZ:
1773                                 sband->channels = data->channels_5ghz;
1774                                 sband->n_channels =
1775                                         ARRAY_SIZE(hwsim_channels_5ghz);
1776                                 sband->bitrates = data->rates + 4;
1777                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1778                                 break;
1779                         default:
1780                                 break;
1781                         }
1782
1783                         sband->ht_cap.ht_supported = true;
1784                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1785                                 IEEE80211_HT_CAP_GRN_FLD |
1786                                 IEEE80211_HT_CAP_SGI_40 |
1787                                 IEEE80211_HT_CAP_DSSSCCK40;
1788                         sband->ht_cap.ampdu_factor = 0x3;
1789                         sband->ht_cap.ampdu_density = 0x6;
1790                         memset(&sband->ht_cap.mcs, 0,
1791                                sizeof(sband->ht_cap.mcs));
1792                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1793                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1794                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1795
1796                         hw->wiphy->bands[band] = sband;
1797                 }
1798                 /* By default all radios are belonging to the first group */
1799                 data->group = 1;
1800                 mutex_init(&data->mutex);
1801
1802                 /* Enable frame retransmissions for lossy channels */
1803                 hw->max_rates = 4;
1804                 hw->max_rate_tries = 11;
1805
1806                 /* Work to be done prior to ieee80211_register_hw() */
1807                 switch (regtest) {
1808                 case HWSIM_REGTEST_DISABLED:
1809                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1810                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1811                 case HWSIM_REGTEST_DIFF_COUNTRY:
1812                         /*
1813                          * Nothing to be done for driver regulatory domain
1814                          * hints prior to ieee80211_register_hw()
1815                          */
1816                         break;
1817                 case HWSIM_REGTEST_WORLD_ROAM:
1818                         if (i == 0) {
1819                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1820                                 wiphy_apply_custom_regulatory(hw->wiphy,
1821                                         &hwsim_world_regdom_custom_01);
1822                         }
1823                         break;
1824                 case HWSIM_REGTEST_CUSTOM_WORLD:
1825                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1826                         wiphy_apply_custom_regulatory(hw->wiphy,
1827                                 &hwsim_world_regdom_custom_01);
1828                         break;
1829                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1830                         if (i == 0) {
1831                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1832                                 wiphy_apply_custom_regulatory(hw->wiphy,
1833                                         &hwsim_world_regdom_custom_01);
1834                         } else if (i == 1) {
1835                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1836                                 wiphy_apply_custom_regulatory(hw->wiphy,
1837                                         &hwsim_world_regdom_custom_02);
1838                         }
1839                         break;
1840                 case HWSIM_REGTEST_STRICT_ALL:
1841                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1842                         break;
1843                 case HWSIM_REGTEST_STRICT_FOLLOW:
1844                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1845                         if (i == 0)
1846                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1847                         break;
1848                 case HWSIM_REGTEST_ALL:
1849                         if (i == 0) {
1850                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1851                                 wiphy_apply_custom_regulatory(hw->wiphy,
1852                                         &hwsim_world_regdom_custom_01);
1853                         } else if (i == 1) {
1854                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1855                                 wiphy_apply_custom_regulatory(hw->wiphy,
1856                                         &hwsim_world_regdom_custom_02);
1857                         } else if (i == 4)
1858                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1859                         break;
1860                 default:
1861                         break;
1862                 }
1863
1864                 /* give the regulatory workqueue a chance to run */
1865                 if (regtest)
1866                         schedule_timeout_interruptible(1);
1867                 err = ieee80211_register_hw(hw);
1868                 if (err < 0) {
1869                         printk(KERN_DEBUG "mac80211_hwsim: "
1870                                "ieee80211_register_hw failed (%d)\n", err);
1871                         goto failed_hw;
1872                 }
1873
1874                 /* Work to be done after to ieee80211_register_hw() */
1875                 switch (regtest) {
1876                 case HWSIM_REGTEST_WORLD_ROAM:
1877                 case HWSIM_REGTEST_DISABLED:
1878                         break;
1879                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1880                         if (!i)
1881                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1882                         break;
1883                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1884                 case HWSIM_REGTEST_STRICT_ALL:
1885                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1886                         break;
1887                 case HWSIM_REGTEST_DIFF_COUNTRY:
1888                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1889                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1890                         break;
1891                 case HWSIM_REGTEST_CUSTOM_WORLD:
1892                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1893                         /*
1894                          * Nothing to be done for custom world regulatory
1895                          * domains after to ieee80211_register_hw
1896                          */
1897                         break;
1898                 case HWSIM_REGTEST_STRICT_FOLLOW:
1899                         if (i == 0)
1900                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1901                         break;
1902                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1903                         if (i == 0)
1904                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1905                         else if (i == 1)
1906                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1907                         break;
1908                 case HWSIM_REGTEST_ALL:
1909                         if (i == 2)
1910                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1911                         else if (i == 3)
1912                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1913                         else if (i == 4)
1914                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1915                         break;
1916                 default:
1917                         break;
1918                 }
1919
1920                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1921                             hw->wiphy->perm_addr);
1922
1923                 data->debugfs = debugfs_create_dir("hwsim",
1924                                                    hw->wiphy->debugfsdir);
1925                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1926                                                        data->debugfs, data,
1927                                                        &hwsim_fops_ps);
1928                 data->debugfs_group = debugfs_create_file("group", 0666,
1929                                                         data->debugfs, data,
1930                                                         &hwsim_fops_group);
1931
1932                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1933                             (unsigned long) hw);
1934
1935                 list_add_tail(&data->list, &hwsim_radios);
1936         }
1937
1938         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1939         if (hwsim_mon == NULL)
1940                 goto failed;
1941
1942         rtnl_lock();
1943
1944         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1945         if (err < 0)
1946                 goto failed_mon;
1947
1948
1949         err = register_netdevice(hwsim_mon);
1950         if (err < 0)
1951                 goto failed_mon;
1952
1953         rtnl_unlock();
1954
1955         err = hwsim_init_netlink();
1956         if (err < 0)
1957                 goto failed_nl;
1958
1959         return 0;
1960
1961 failed_nl:
1962         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
1963         return err;
1964
1965 failed_mon:
1966         rtnl_unlock();
1967         free_netdev(hwsim_mon);
1968         mac80211_hwsim_free();
1969         return err;
1970
1971 failed_hw:
1972         device_unregister(data->dev);
1973 failed_drvdata:
1974         ieee80211_free_hw(hw);
1975 failed:
1976         mac80211_hwsim_free();
1977         return err;
1978 }
1979
1980
1981 static void __exit exit_mac80211_hwsim(void)
1982 {
1983         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1984
1985         hwsim_exit_netlink();
1986
1987         mac80211_hwsim_free();
1988         unregister_netdev(hwsim_mon);
1989 }
1990
1991
1992 module_init(init_mac80211_hwsim);
1993 module_exit(exit_mac80211_hwsim);