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