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 <linux/ktime.h>
  31 #include <net/genetlink.h>
  32 #include "mac80211_hwsim.h"
  33
  34 #define WARN_QUEUE 100
  35 #define MAX_QUEUE 200
  36
  37 MODULE_AUTHOR("Jouni Malinen");
  38 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  39 MODULE_LICENSE("GPL");
  40
  41 static u32 wmediumd_portid;
  42
  43 static int radios = 2;
  44 module_param(radios, int, 0444);
  45 MODULE_PARM_DESC(radios, "Number of simulated radios");
  46
  47 static int channels = 1;
  48 module_param(channels, int, 0444);
  49 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  50
  51 /**
  52  * enum hwsim_regtest - the type of regulatory tests we offer
  53  *
  54  * These are the different values you can use for the regtest
  55  * module parameter. This is useful to help test world roaming
  56  * and the driver regulatory_hint() call and combinations of these.
  57  * If you want to do specific alpha2 regulatory domain tests simply
  58  * use the userspace regulatory request as that will be respected as
  59  * well without the need of this module parameter. This is designed
  60  * only for testing the driver regulatory request, world roaming
  61  * and all possible combinations.
  62  *
  63  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  64  *      this is the default value.
  65  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  66  *      hint, only one driver regulatory hint will be sent as such the
  67  *      secondary radios are expected to follow.
  68  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  69  *      request with all radios reporting the same regulatory domain.
  70  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  71  *      different regulatory domains requests. Expected behaviour is for
  72  *      an intersection to occur but each device will still use their
  73  *      respective regulatory requested domains. Subsequent radios will
  74  *      use the resulting intersection.
  75  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  76  *      this by using a custom beacon-capable regulatory domain for the first
  77  *      radio. All other device world roam.
  78  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  79  *      domain requests. All radios will adhere to this custom world regulatory
  80  *      domain.
  81  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  82  *      domain requests. The first radio will adhere to the first custom world
  83  *      regulatory domain, the second one to the second custom world regulatory
  84  *      domain. All other devices will world roam.
  85  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  86  *      settings, only the first radio will send a regulatory domain request
  87  *      and use strict settings. The rest of the radios are expected to follow.
  88  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  89  *      settings. All radios will adhere to this.
  90  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  91  *      domain settings, combined with secondary driver regulatory domain
  92  *      settings. The first radio will get a strict regulatory domain setting
  93  *      using the first driver regulatory request and the second radio will use
  94  *      non-strict settings using the second driver regulatory request. All
  95  *      other devices should follow the intersection created between the
  96  *      first two.
  97  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  98  *      at least 6 radios for a complete test. We will test in this order:
  99  *      1 - driver custom world regulatory domain
 100  *      2 - second custom world regulatory domain
 101  *      3 - first driver regulatory domain request
 102  *      4 - second driver regulatory domain request
 103  *      5 - strict regulatory domain settings using the third driver regulatory
 104  *          domain request
 105  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 106  *                 regulatory requests.
 107  */
 108 enum hwsim_regtest {
 109         HWSIM_REGTEST_DISABLED = 0,
 110         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 111         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 112         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 113         HWSIM_REGTEST_WORLD_ROAM = 4,
 114         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 115         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 116         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 117         HWSIM_REGTEST_STRICT_ALL = 8,
 118         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 119         HWSIM_REGTEST_ALL = 10,
 120 };
 121
 122 /* Set to one of the HWSIM_REGTEST_* values above */
 123 static int regtest = HWSIM_REGTEST_DISABLED;
 124 module_param(regtest, int, 0444);
 125 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 126
 127 static const char *hwsim_alpha2s[] = {
 128         "FI",
 129         "AL",
 130         "US",
 131         "DE",
 132         "JP",
 133         "AL",
 134 };
 135
 136 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 137         .n_reg_rules = 4,
 138         .alpha2 =  "99",
 139         .reg_rules = {
 140                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 141                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 142                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 143                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 144         }
 145 };
 146
 147 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 148         .n_reg_rules = 2,
 149         .alpha2 =  "99",
 150         .reg_rules = {
 151                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 152                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 153                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 154         }
 155 };
 156
 157 struct hwsim_vif_priv {
 158         u32 magic;
 159         u8 bssid[ETH_ALEN];
 160         bool assoc;
 161         u16 aid;
 162 };
 163
 164 #define HWSIM_VIF_MAGIC 0x69537748
 165
 166 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 167 {
 168         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 169         WARN(vp->magic != HWSIM_VIF_MAGIC,
 170              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 171              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 172 }
 173
 174 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 175 {
 176         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 177         vp->magic = HWSIM_VIF_MAGIC;
 178 }
 179
 180 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 181 {
 182         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 183         vp->magic = 0;
 184 }
 185
 186 struct hwsim_sta_priv {
 187         u32 magic;
 188 };
 189
 190 #define HWSIM_STA_MAGIC 0x6d537749
 191
 192 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 193 {
 194         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 195         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 196 }
 197
 198 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 199 {
 200         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 201         sp->magic = HWSIM_STA_MAGIC;
 202 }
 203
 204 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 205 {
 206         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 207         sp->magic = 0;
 208 }
 209
 210 struct hwsim_chanctx_priv {
 211         u32 magic;
 212 };
 213
 214 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 215
 216 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 217 {
 218         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 219         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 220 }
 221
 222 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 223 {
 224         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 225         cp->magic = HWSIM_CHANCTX_MAGIC;
 226 }
 227
 228 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 229 {
 230         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 231         cp->magic = 0;
 232 }
 233
 234 static struct class *hwsim_class;
 235
 236 static struct net_device *hwsim_mon; /* global monitor netdev */
 237
 238 #define CHAN2G(_freq)  { \
 239         .band = IEEE80211_BAND_2GHZ, \
 240         .center_freq = (_freq), \
 241         .hw_value = (_freq), \
 242         .max_power = 20, \
 243 }
 244
 245 #define CHAN5G(_freq) { \
 246         .band = IEEE80211_BAND_5GHZ, \
 247         .center_freq = (_freq), \
 248         .hw_value = (_freq), \
 249         .max_power = 20, \
 250 }
 251
 252 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 253         CHAN2G(2412), /* Channel 1 */
 254         CHAN2G(2417), /* Channel 2 */
 255         CHAN2G(2422), /* Channel 3 */
 256         CHAN2G(2427), /* Channel 4 */
 257         CHAN2G(2432), /* Channel 5 */
 258         CHAN2G(2437), /* Channel 6 */
 259         CHAN2G(2442), /* Channel 7 */
 260         CHAN2G(2447), /* Channel 8 */
 261         CHAN2G(2452), /* Channel 9 */
 262         CHAN2G(2457), /* Channel 10 */
 263         CHAN2G(2462), /* Channel 11 */
 264         CHAN2G(2467), /* Channel 12 */
 265         CHAN2G(2472), /* Channel 13 */
 266         CHAN2G(2484), /* Channel 14 */
 267 };
 268
 269 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 270         CHAN5G(5180), /* Channel 36 */
 271         CHAN5G(5200), /* Channel 40 */
 272         CHAN5G(5220), /* Channel 44 */
 273         CHAN5G(5240), /* Channel 48 */
 274
 275         CHAN5G(5260), /* Channel 52 */
 276         CHAN5G(5280), /* Channel 56 */
 277         CHAN5G(5300), /* Channel 60 */
 278         CHAN5G(5320), /* Channel 64 */
 279
 280         CHAN5G(5500), /* Channel 100 */
 281         CHAN5G(5520), /* Channel 104 */
 282         CHAN5G(5540), /* Channel 108 */
 283         CHAN5G(5560), /* Channel 112 */
 284         CHAN5G(5580), /* Channel 116 */
 285         CHAN5G(5600), /* Channel 120 */
 286         CHAN5G(5620), /* Channel 124 */
 287         CHAN5G(5640), /* Channel 128 */
 288         CHAN5G(5660), /* Channel 132 */
 289         CHAN5G(5680), /* Channel 136 */
 290         CHAN5G(5700), /* Channel 140 */
 291
 292         CHAN5G(5745), /* Channel 149 */
 293         CHAN5G(5765), /* Channel 153 */
 294         CHAN5G(5785), /* Channel 157 */
 295         CHAN5G(5805), /* Channel 161 */
 296         CHAN5G(5825), /* Channel 165 */
 297 };
 298
 299 static const struct ieee80211_rate hwsim_rates[] = {
 300         { .bitrate = 10 },
 301         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 302         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 303         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 304         { .bitrate = 60 },
 305         { .bitrate = 90 },
 306         { .bitrate = 120 },
 307         { .bitrate = 180 },
 308         { .bitrate = 240 },
 309         { .bitrate = 360 },
 310         { .bitrate = 480 },
 311         { .bitrate = 540 }
 312 };
 313
 314 static spinlock_t hwsim_radio_lock;
 315 static struct list_head hwsim_radios;
 316
 317 struct mac80211_hwsim_data {
 318         struct list_head list;
 319         struct ieee80211_hw *hw;
 320         struct device *dev;
 321         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 322         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 323         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 324         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 325
 326         struct mac_address addresses[2];
 327
 328         struct ieee80211_channel *tmp_chan;
 329         struct delayed_work roc_done;
 330         struct delayed_work hw_scan;
 331         struct cfg80211_scan_request *hw_scan_request;
 332         struct ieee80211_vif *hw_scan_vif;
 333         int scan_chan_idx;
 334
 335         struct ieee80211_channel *channel;
 336         unsigned long beacon_int; /* in jiffies unit */
 337         unsigned int rx_filter;
 338         bool started, idle, scanning;
 339         struct mutex mutex;
 340         struct timer_list beacon_timer;
 341         enum ps_mode {
 342                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 343         } ps;
 344         bool ps_poll_pending;
 345         struct dentry *debugfs;
 346         struct dentry *debugfs_ps;
 347
 348         struct sk_buff_head pending;    /* packets pending */
 349         /*
 350          * Only radios in the same group can communicate together (the
 351          * channel has to match too). Each bit represents a group. A
 352          * radio can be in more then one group.
 353          */
 354         u64 group;
 355         struct dentry *debugfs_group;
 356
 357         int power_level;
 358
 359         /* difference between this hw's clock and the real clock, in usecs */
 360         u64 tsf_offset;
 361 };
 362
 363
 364 struct hwsim_radiotap_hdr {
 365         struct ieee80211_radiotap_header hdr;
 366         __le64 rt_tsft;
 367         u8 rt_flags;
 368         u8 rt_rate;
 369         __le16 rt_channel;
 370         __le16 rt_chbitmask;
 371 } __packed;
 372
 373 /* MAC80211_HWSIM netlinf family */
 374 static struct genl_family hwsim_genl_family = {
 375         .id = GENL_ID_GENERATE,
 376         .hdrsize = 0,
 377         .name = "MAC80211_HWSIM",
 378         .version = 1,
 379         .maxattr = HWSIM_ATTR_MAX,
 380 };
 381
 382 /* MAC80211_HWSIM netlink policy */
 383
 384 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 385         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 386                                        .len = 6*sizeof(u8) },
 387         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 388                                           .len = 6*sizeof(u8) },
 389         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 390                                .len = IEEE80211_MAX_DATA_LEN },
 391         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 392         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 393         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 394         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 395                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 396                                         struct hwsim_tx_rate)},
 397         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 398 };
 399
 400 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 401                                         struct net_device *dev)
 402 {
 403         /* TODO: allow packet injection */
 404         dev_kfree_skb(skb);
 405         return NETDEV_TX_OK;
 406 }
 407
 408 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 409 {
 410         struct timeval tv = ktime_to_timeval(ktime_get_real());
 411         u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
 412         return cpu_to_le64(now + data->tsf_offset);
 413 }
 414
 415 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 416                 struct ieee80211_vif *vif)
 417 {
 418         struct mac80211_hwsim_data *data = hw->priv;
 419         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 420 }
 421
 422 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 423                 struct ieee80211_vif *vif, u64 tsf)
 424 {
 425         struct mac80211_hwsim_data *data = hw->priv;
 426         struct timeval tv = ktime_to_timeval(ktime_get_real());
 427         u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
 428         data->tsf_offset = tsf - now;
 429 }
 430
 431 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 432                                       struct sk_buff *tx_skb,
 433                                       struct ieee80211_channel *chan)
 434 {
 435         struct mac80211_hwsim_data *data = hw->priv;
 436         struct sk_buff *skb;
 437         struct hwsim_radiotap_hdr *hdr;
 438         u16 flags;
 439         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 440         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 441
 442         if (!netif_running(hwsim_mon))
 443                 return;
 444
 445         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 446         if (skb == NULL)
 447                 return;
 448
 449         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 450         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 451         hdr->hdr.it_pad = 0;
 452         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 453         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 454                                           (1 << IEEE80211_RADIOTAP_RATE) |
 455                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 456                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 457         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 458         hdr->rt_flags = 0;
 459         hdr->rt_rate = txrate->bitrate / 5;
 460         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 461         flags = IEEE80211_CHAN_2GHZ;
 462         if (txrate->flags & IEEE80211_RATE_ERP_G)
 463                 flags |= IEEE80211_CHAN_OFDM;
 464         else
 465                 flags |= IEEE80211_CHAN_CCK;
 466         hdr->rt_chbitmask = cpu_to_le16(flags);
 467
 468         skb->dev = hwsim_mon;
 469         skb_set_mac_header(skb, 0);
 470         skb->ip_summed = CHECKSUM_UNNECESSARY;
 471         skb->pkt_type = PACKET_OTHERHOST;
 472         skb->protocol = htons(ETH_P_802_2);
 473         memset(skb->cb, 0, sizeof(skb->cb));
 474         netif_rx(skb);
 475 }
 476
 477
 478 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 479                                        const u8 *addr)
 480 {
 481         struct sk_buff *skb;
 482         struct hwsim_radiotap_hdr *hdr;
 483         u16 flags;
 484         struct ieee80211_hdr *hdr11;
 485
 486         if (!netif_running(hwsim_mon))
 487                 return;
 488
 489         skb = dev_alloc_skb(100);
 490         if (skb == NULL)
 491                 return;
 492
 493         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 494         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 495         hdr->hdr.it_pad = 0;
 496         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 497         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 498                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 499         hdr->rt_flags = 0;
 500         hdr->rt_rate = 0;
 501         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 502         flags = IEEE80211_CHAN_2GHZ;
 503         hdr->rt_chbitmask = cpu_to_le16(flags);
 504
 505         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 506         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 507                                            IEEE80211_STYPE_ACK);
 508         hdr11->duration_id = cpu_to_le16(0);
 509         memcpy(hdr11->addr1, addr, ETH_ALEN);
 510
 511         skb->dev = hwsim_mon;
 512         skb_set_mac_header(skb, 0);
 513         skb->ip_summed = CHECKSUM_UNNECESSARY;
 514         skb->pkt_type = PACKET_OTHERHOST;
 515         skb->protocol = htons(ETH_P_802_2);
 516         memset(skb->cb, 0, sizeof(skb->cb));
 517         netif_rx(skb);
 518 }
 519
 520
 521 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 522                            struct sk_buff *skb)
 523 {
 524         switch (data->ps) {
 525         case PS_DISABLED:
 526                 return true;
 527         case PS_ENABLED:
 528                 return false;
 529         case PS_AUTO_POLL:
 530                 /* TODO: accept (some) Beacons by default and other frames only
 531                  * if pending PS-Poll has been sent */
 532                 return true;
 533         case PS_MANUAL_POLL:
 534                 /* Allow unicast frames to own address if there is a pending
 535                  * PS-Poll */
 536                 if (data->ps_poll_pending &&
 537                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 538                            ETH_ALEN) == 0) {
 539                         data->ps_poll_pending = false;
 540                         return true;
 541                 }
 542                 return false;
 543         }
 544
 545         return true;
 546 }
 547
 548
 549 struct mac80211_hwsim_addr_match_data {
 550         bool ret;
 551         const u8 *addr;
 552 };
 553
 554 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 555                                      struct ieee80211_vif *vif)
 556 {
 557         struct mac80211_hwsim_addr_match_data *md = data;
 558         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 559                 md->ret = true;
 560 }
 561
 562
 563 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 564                                       const u8 *addr)
 565 {
 566         struct mac80211_hwsim_addr_match_data md;
 567
 568         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 569                 return true;
 570
 571         md.ret = false;
 572         md.addr = addr;
 573         ieee80211_iterate_active_interfaces_atomic(data->hw,
 574                                                    IEEE80211_IFACE_ITER_NORMAL,
 575                                                    mac80211_hwsim_addr_iter,
 576                                                    &md);
 577
 578         return md.ret;
 579 }
 580
 581 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 582                                        struct sk_buff *my_skb,
 583                                        int dst_portid)
 584 {
 585         struct sk_buff *skb;
 586         struct mac80211_hwsim_data *data = hw->priv;
 587         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 588         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 589         void *msg_head;
 590         unsigned int hwsim_flags = 0;
 591         int i;
 592         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 593
 594         if (data->ps != PS_DISABLED)
 595                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 596         /* If the queue contains MAX_QUEUE skb's drop some */
 597         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 598                 /* Droping until WARN_QUEUE level */
 599                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 600                         skb_dequeue(&data->pending);
 601         }
 602
 603         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 604         if (skb == NULL)
 605                 goto nla_put_failure;
 606
 607         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 608                                HWSIM_CMD_FRAME);
 609         if (msg_head == NULL) {
 610                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 611                 goto nla_put_failure;
 612         }
 613
 614         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 615                     sizeof(struct mac_address), data->addresses[1].addr))
 616                 goto nla_put_failure;
 617
 618         /* We get the skb->data */
 619         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 620                 goto nla_put_failure;
 621
 622         /* We get the flags for this transmission, and we translate them to
 623            wmediumd flags  */
 624
 625         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 626                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 627
 628         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 629                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 630
 631         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 632                 goto nla_put_failure;
 633
 634         /* We get the tx control (rate and retries) info*/
 635
 636         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 637                 tx_attempts[i].idx = info->status.rates[i].idx;
 638                 tx_attempts[i].count = info->status.rates[i].count;
 639         }
 640
 641         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 642                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 643                     tx_attempts))
 644                 goto nla_put_failure;
 645
 646         /* We create a cookie to identify this skb */
 647         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 648                 goto nla_put_failure;
 649
 650         genlmsg_end(skb, msg_head);
 651         genlmsg_unicast(&init_net, skb, dst_portid);
 652
 653         /* Enqueue the packet */
 654         skb_queue_tail(&data->pending, my_skb);
 655         return;
 656
 657 nla_put_failure:
 658         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 659 }
 660
 661 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 662                                struct ieee80211_channel *c2)
 663 {
 664         if (!c1 || !c2)
 665                 return false;
 666
 667         return c1->center_freq == c2->center_freq;
 668 }
 669
 670 struct tx_iter_data {
 671         struct ieee80211_channel *channel;
 672         bool receive;
 673 };
 674
 675 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 676                                    struct ieee80211_vif *vif)
 677 {
 678         struct tx_iter_data *data = _data;
 679
 680         if (!vif->chanctx_conf)
 681                 return;
 682
 683         if (!hwsim_chans_compat(data->channel,
 684                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 685                 return;
 686
 687         data->receive = true;
 688 }
 689
 690 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 691                                           struct sk_buff *skb,
 692                                           struct ieee80211_channel *chan)
 693 {
 694         struct mac80211_hwsim_data *data = hw->priv, *data2;
 695         bool ack = false;
 696         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 697         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 698         struct ieee80211_rx_status rx_status;
 699         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 700
 701         memset(&rx_status, 0, sizeof(rx_status));
 702         rx_status.flag |= RX_FLAG_MACTIME_START;
 703         rx_status.freq = chan->center_freq;
 704         rx_status.band = chan->band;
 705         rx_status.rate_idx = info->control.rates[0].idx;
 706         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 707                 rx_status.flag |= RX_FLAG_HT;
 708         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 709                 rx_status.flag |= RX_FLAG_40MHZ;
 710         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 711                 rx_status.flag |= RX_FLAG_SHORT_GI;
 712         /* TODO: simulate real signal strength (and optional packet loss) */
 713         rx_status.signal = data->power_level - 50;
 714
 715         if (data->ps != PS_DISABLED)
 716                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 717
 718         /* release the skb's source info */
 719         skb_orphan(skb);
 720         skb_dst_drop(skb);
 721         skb->mark = 0;
 722         secpath_reset(skb);
 723         nf_reset(skb);
 724
 725         /* Copy skb to all enabled radios that are on the current frequency */
 726         spin_lock(&hwsim_radio_lock);
 727         list_for_each_entry(data2, &hwsim_radios, list) {
 728                 struct sk_buff *nskb;
 729                 struct ieee80211_mgmt *mgmt;
 730                 struct tx_iter_data tx_iter_data = {
 731                         .receive = false,
 732                         .channel = chan,
 733                 };
 734
 735                 if (data == data2)
 736                         continue;
 737
 738                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 739                     !hwsim_ps_rx_ok(data2, skb))
 740                         continue;
 741
 742                 if (!(data->group & data2->group))
 743                         continue;
 744
 745                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 746                     !hwsim_chans_compat(chan, data2->channel)) {
 747                         ieee80211_iterate_active_interfaces_atomic(
 748                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 749                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 750                         if (!tx_iter_data.receive)
 751                                 continue;
 752                 }
 753
 754                 /*
 755                  * reserve some space for our vendor and the normal
 756                  * radiotap header, since we're copying anyway
 757                  */
 758                 nskb = skb_copy_expand(skb, 64, 0, GFP_ATOMIC);
 759                 if (nskb == NULL)
 760                         continue;
 761
 762                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 763                         ack = true;
 764
 765                 /* set bcn timestamp relative to receiver mactime */
 766                 rx_status.mactime =
 767                                 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
 768                 mgmt = (struct ieee80211_mgmt *) nskb->data;
 769                 if (ieee80211_is_beacon(mgmt->frame_control) ||
 770                     ieee80211_is_probe_resp(mgmt->frame_control))
 771                         mgmt->u.beacon.timestamp = cpu_to_le64(
 772                                 rx_status.mactime +
 773                                 (data->tsf_offset - data2->tsf_offset) +
 774                                 24 * 8 * 10 / txrate->bitrate);
 775
 776 #if 0
 777                 /*
 778                  * Don't enable this code by default as the OUI 00:00:00
 779                  * is registered to Xerox so we shouldn't use it here, it
 780                  * might find its way into pcap files.
 781                  * Note that this code requires the headroom in the SKB
 782                  * that was allocated earlier.
 783                  */
 784                 rx_status.vendor_radiotap_oui[0] = 0x00;
 785                 rx_status.vendor_radiotap_oui[1] = 0x00;
 786                 rx_status.vendor_radiotap_oui[2] = 0x00;
 787                 rx_status.vendor_radiotap_subns = 127;
 788                 /*
 789                  * Radiotap vendor namespaces can (and should) also be
 790                  * split into fields by using the standard radiotap
 791                  * presence bitmap mechanism. Use just BIT(0) here for
 792                  * the presence bitmap.
 793                  */
 794                 rx_status.vendor_radiotap_bitmap = BIT(0);
 795                 /* We have 8 bytes of (dummy) data */
 796                 rx_status.vendor_radiotap_len = 8;
 797                 /* For testing, also require it to be aligned */
 798                 rx_status.vendor_radiotap_align = 8;
 799                 /* push the data */
 800                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 801 #endif
 802
 803                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 804                 ieee80211_rx_irqsafe(data2->hw, nskb);
 805         }
 806         spin_unlock(&hwsim_radio_lock);
 807
 808         return ack;
 809 }
 810
 811 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 812                               struct ieee80211_tx_control *control,
 813                               struct sk_buff *skb)
 814 {
 815         struct mac80211_hwsim_data *data = hw->priv;
 816         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 817         struct ieee80211_chanctx_conf *chanctx_conf;
 818         struct ieee80211_channel *channel;
 819         bool ack;
 820         u32 _portid;
 821
 822         if (WARN_ON(skb->len < 10)) {
 823                 /* Should not happen; just a sanity check for addr1 use */
 824                 dev_kfree_skb(skb);
 825                 return;
 826         }
 827
 828         if (channels == 1) {
 829                 channel = data->channel;
 830         } else if (txi->hw_queue == 4) {
 831                 channel = data->tmp_chan;
 832         } else {
 833                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 834                 if (chanctx_conf)
 835                         channel = chanctx_conf->def.chan;
 836                 else
 837                         channel = NULL;
 838         }
 839
 840         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 841                 dev_kfree_skb(skb);
 842                 return;
 843         }
 844
 845         if (data->idle && !data->tmp_chan) {
 846                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 847                 dev_kfree_skb(skb);
 848                 return;
 849         }
 850
 851         if (txi->control.vif)
 852                 hwsim_check_magic(txi->control.vif);
 853         if (control->sta)
 854                 hwsim_check_sta_magic(control->sta);
 855
 856         txi->rate_driver_data[0] = channel;
 857
 858         mac80211_hwsim_monitor_rx(hw, skb, channel);
 859
 860         /* wmediumd mode check */
 861         _portid = ACCESS_ONCE(wmediumd_portid);
 862
 863         if (_portid)
 864                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 865
 866         /* NO wmediumd detected, perfect medium simulation */
 867         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 868
 869         if (ack && skb->len >= 16) {
 870                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 871                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 872         }
 873
 874         ieee80211_tx_info_clear_status(txi);
 875
 876         /* frame was transmitted at most favorable rate at first attempt */
 877         txi->control.rates[0].count = 1;
 878         txi->control.rates[1].idx = -1;
 879
 880         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 881                 txi->flags |= IEEE80211_TX_STAT_ACK;
 882         ieee80211_tx_status_irqsafe(hw, skb);
 883 }
 884
 885
 886 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 887 {
 888         struct mac80211_hwsim_data *data = hw->priv;
 889         wiphy_debug(hw->wiphy, "%s\n", __func__);
 890         data->started = true;
 891         return 0;
 892 }
 893
 894
 895 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 896 {
 897         struct mac80211_hwsim_data *data = hw->priv;
 898         data->started = false;
 899         del_timer(&data->beacon_timer);
 900         wiphy_debug(hw->wiphy, "%s\n", __func__);
 901 }
 902
 903
 904 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 905                                         struct ieee80211_vif *vif)
 906 {
 907         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 908                     __func__, ieee80211_vif_type_p2p(vif),
 909                     vif->addr);
 910         hwsim_set_magic(vif);
 911
 912         vif->cab_queue = 0;
 913         vif->hw_queue[IEEE80211_AC_VO] = 0;
 914         vif->hw_queue[IEEE80211_AC_VI] = 1;
 915         vif->hw_queue[IEEE80211_AC_BE] = 2;
 916         vif->hw_queue[IEEE80211_AC_BK] = 3;
 917
 918         return 0;
 919 }
 920
 921
 922 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 923                                            struct ieee80211_vif *vif,
 924                                            enum nl80211_iftype newtype,
 925                                            bool newp2p)
 926 {
 927         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 928         wiphy_debug(hw->wiphy,
 929                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 930                     __func__, ieee80211_vif_type_p2p(vif),
 931                     newtype, vif->addr);
 932         hwsim_check_magic(vif);
 933
 934         return 0;
 935 }
 936
 937 static void mac80211_hwsim_remove_interface(
 938         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 939 {
 940         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 941                     __func__, ieee80211_vif_type_p2p(vif),
 942                     vif->addr);
 943         hwsim_check_magic(vif);
 944         hwsim_clear_magic(vif);
 945 }
 946
 947 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 948                                     struct sk_buff *skb,
 949                                     struct ieee80211_channel *chan)
 950 {
 951         u32 _pid = ACCESS_ONCE(wmediumd_portid);
 952
 953         mac80211_hwsim_monitor_rx(hw, skb, chan);
 954
 955         if (_pid)
 956                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 957
 958         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
 959         dev_kfree_skb(skb);
 960 }
 961
 962 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 963                                      struct ieee80211_vif *vif)
 964 {
 965         struct ieee80211_hw *hw = arg;
 966         struct sk_buff *skb;
 967
 968         hwsim_check_magic(vif);
 969
 970         if (vif->type != NL80211_IFTYPE_AP &&
 971             vif->type != NL80211_IFTYPE_MESH_POINT &&
 972             vif->type != NL80211_IFTYPE_ADHOC)
 973                 return;
 974
 975         skb = ieee80211_beacon_get(hw, vif);
 976         if (skb == NULL)
 977                 return;
 978
 979         mac80211_hwsim_tx_frame(hw, skb,
 980                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 981 }
 982
 983
 984 static void mac80211_hwsim_beacon(unsigned long arg)
 985 {
 986         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 987         struct mac80211_hwsim_data *data = hw->priv;
 988
 989         if (!data->started)
 990                 return;
 991
 992         ieee80211_iterate_active_interfaces_atomic(
 993                 hw, IEEE80211_IFACE_ITER_NORMAL,
 994                 mac80211_hwsim_beacon_tx, hw);
 995
 996         data->beacon_timer.expires = jiffies + data->beacon_int;
 997         add_timer(&data->beacon_timer);
 998 }
 999
1000 static const char *hwsim_chantypes[] = {
1001         [NL80211_CHAN_NO_HT] = "noht",
1002         [NL80211_CHAN_HT20] = "ht20",
1003         [NL80211_CHAN_HT40MINUS] = "ht40-",
1004         [NL80211_CHAN_HT40PLUS] = "ht40+",
1005 };
1006
1007 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1008 {
1009         struct mac80211_hwsim_data *data = hw->priv;
1010         struct ieee80211_conf *conf = &hw->conf;
1011         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1012                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1013                 [IEEE80211_SMPS_OFF] = "off",
1014                 [IEEE80211_SMPS_STATIC] = "static",
1015                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1016         };
1017
1018         wiphy_debug(hw->wiphy,
1019                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
1020                     __func__,
1021                     conf->channel ? conf->channel->center_freq : 0,
1022                     hwsim_chantypes[conf->channel_type],
1023                     !!(conf->flags & IEEE80211_CONF_IDLE),
1024                     !!(conf->flags & IEEE80211_CONF_PS),
1025                     smps_modes[conf->smps_mode]);
1026
1027         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1028
1029         data->channel = conf->channel;
1030
1031         WARN_ON(data->channel && channels > 1);
1032
1033         data->power_level = conf->power_level;
1034         if (!data->started || !data->beacon_int)
1035                 del_timer(&data->beacon_timer);
1036         else
1037                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
1038
1039         return 0;
1040 }
1041
1042
1043 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1044                                             unsigned int changed_flags,
1045                                             unsigned int *total_flags,u64 multicast)
1046 {
1047         struct mac80211_hwsim_data *data = hw->priv;
1048
1049         wiphy_debug(hw->wiphy, "%s\n", __func__);
1050
1051         data->rx_filter = 0;
1052         if (*total_flags & FIF_PROMISC_IN_BSS)
1053                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1054         if (*total_flags & FIF_ALLMULTI)
1055                 data->rx_filter |= FIF_ALLMULTI;
1056
1057         *total_flags = data->rx_filter;
1058 }
1059
1060 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1061                                             struct ieee80211_vif *vif,
1062                                             struct ieee80211_bss_conf *info,
1063                                             u32 changed)
1064 {
1065         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1066         struct mac80211_hwsim_data *data = hw->priv;
1067
1068         hwsim_check_magic(vif);
1069
1070         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
1071
1072         if (changed & BSS_CHANGED_BSSID) {
1073                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1074                             __func__, info->bssid);
1075                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1076         }
1077
1078         if (changed & BSS_CHANGED_ASSOC) {
1079                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1080                             info->assoc, info->aid);
1081                 vp->assoc = info->assoc;
1082                 vp->aid = info->aid;
1083         }
1084
1085         if (changed & BSS_CHANGED_BEACON_INT) {
1086                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1087                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
1088                 if (WARN_ON(!data->beacon_int))
1089                         data->beacon_int = 1;
1090                 if (data->started)
1091                         mod_timer(&data->beacon_timer,
1092                                   jiffies + data->beacon_int);
1093         }
1094
1095         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1096                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1097                             info->use_cts_prot);
1098         }
1099
1100         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1101                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1102                             info->use_short_preamble);
1103         }
1104
1105         if (changed & BSS_CHANGED_ERP_SLOT) {
1106                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1107         }
1108
1109         if (changed & BSS_CHANGED_HT) {
1110                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1111                             info->ht_operation_mode);
1112         }
1113
1114         if (changed & BSS_CHANGED_BASIC_RATES) {
1115                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1116                             (unsigned long long) info->basic_rates);
1117         }
1118
1119         if (changed & BSS_CHANGED_TXPOWER)
1120                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1121 }
1122
1123 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1124                                   struct ieee80211_vif *vif,
1125                                   struct ieee80211_sta *sta)
1126 {
1127         hwsim_check_magic(vif);
1128         hwsim_set_sta_magic(sta);
1129
1130         return 0;
1131 }
1132
1133 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1134                                      struct ieee80211_vif *vif,
1135                                      struct ieee80211_sta *sta)
1136 {
1137         hwsim_check_magic(vif);
1138         hwsim_clear_sta_magic(sta);
1139
1140         return 0;
1141 }
1142
1143 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1144                                       struct ieee80211_vif *vif,
1145                                       enum sta_notify_cmd cmd,
1146                                       struct ieee80211_sta *sta)
1147 {
1148         hwsim_check_magic(vif);
1149
1150         switch (cmd) {
1151         case STA_NOTIFY_SLEEP:
1152         case STA_NOTIFY_AWAKE:
1153                 /* TODO: make good use of these flags */
1154                 break;
1155         default:
1156                 WARN(1, "Invalid sta notify: %d\n", cmd);
1157                 break;
1158         }
1159 }
1160
1161 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1162                                   struct ieee80211_sta *sta,
1163                                   bool set)
1164 {
1165         hwsim_check_sta_magic(sta);
1166         return 0;
1167 }
1168
1169 static int mac80211_hwsim_conf_tx(
1170         struct ieee80211_hw *hw,
1171         struct ieee80211_vif *vif, u16 queue,
1172         const struct ieee80211_tx_queue_params *params)
1173 {
1174         wiphy_debug(hw->wiphy,
1175                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1176                     __func__, queue,
1177                     params->txop, params->cw_min,
1178                     params->cw_max, params->aifs);
1179         return 0;
1180 }
1181
1182 static int mac80211_hwsim_get_survey(
1183         struct ieee80211_hw *hw, int idx,
1184         struct survey_info *survey)
1185 {
1186         struct ieee80211_conf *conf = &hw->conf;
1187
1188         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1189
1190         if (idx != 0)
1191                 return -ENOENT;
1192
1193         /* Current channel */
1194         survey->channel = conf->channel;
1195
1196         /*
1197          * Magically conjured noise level --- this is only ok for simulated hardware.
1198          *
1199          * A real driver which cannot determine the real channel noise MUST NOT
1200          * report any noise, especially not a magically conjured one :-)
1201          */
1202         survey->filled = SURVEY_INFO_NOISE_DBM;
1203         survey->noise = -92;
1204
1205         return 0;
1206 }
1207
1208 #ifdef CONFIG_NL80211_TESTMODE
1209 /*
1210  * This section contains example code for using netlink
1211  * attributes with the testmode command in nl80211.
1212  */
1213
1214 /* These enums need to be kept in sync with userspace */
1215 enum hwsim_testmode_attr {
1216         __HWSIM_TM_ATTR_INVALID = 0,
1217         HWSIM_TM_ATTR_CMD       = 1,
1218         HWSIM_TM_ATTR_PS        = 2,
1219
1220         /* keep last */
1221         __HWSIM_TM_ATTR_AFTER_LAST,
1222         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1223 };
1224
1225 enum hwsim_testmode_cmd {
1226         HWSIM_TM_CMD_SET_PS             = 0,
1227         HWSIM_TM_CMD_GET_PS             = 1,
1228         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1229         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1230 };
1231
1232 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1233         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1234         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1235 };
1236
1237 static int hwsim_fops_ps_write(void *dat, u64 val);
1238
1239 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1240                                        void *data, int len)
1241 {
1242         struct mac80211_hwsim_data *hwsim = hw->priv;
1243         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1244         struct sk_buff *skb;
1245         int err, ps;
1246
1247         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1248                         hwsim_testmode_policy);
1249         if (err)
1250                 return err;
1251
1252         if (!tb[HWSIM_TM_ATTR_CMD])
1253                 return -EINVAL;
1254
1255         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1256         case HWSIM_TM_CMD_SET_PS:
1257                 if (!tb[HWSIM_TM_ATTR_PS])
1258                         return -EINVAL;
1259                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1260                 return hwsim_fops_ps_write(hwsim, ps);
1261         case HWSIM_TM_CMD_GET_PS:
1262                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1263                                                 nla_total_size(sizeof(u32)));
1264                 if (!skb)
1265                         return -ENOMEM;
1266                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1267                         goto nla_put_failure;
1268                 return cfg80211_testmode_reply(skb);
1269         case HWSIM_TM_CMD_STOP_QUEUES:
1270                 ieee80211_stop_queues(hw);
1271                 return 0;
1272         case HWSIM_TM_CMD_WAKE_QUEUES:
1273                 ieee80211_wake_queues(hw);
1274                 return 0;
1275         default:
1276                 return -EOPNOTSUPP;
1277         }
1278
1279  nla_put_failure:
1280         kfree_skb(skb);
1281         return -ENOBUFS;
1282 }
1283 #endif
1284
1285 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1286                                        struct ieee80211_vif *vif,
1287                                        enum ieee80211_ampdu_mlme_action action,
1288                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1289                                        u8 buf_size)
1290 {
1291         switch (action) {
1292         case IEEE80211_AMPDU_TX_START:
1293                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1294                 break;
1295         case IEEE80211_AMPDU_TX_STOP:
1296                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1297                 break;
1298         case IEEE80211_AMPDU_TX_OPERATIONAL:
1299                 break;
1300         case IEEE80211_AMPDU_RX_START:
1301         case IEEE80211_AMPDU_RX_STOP:
1302                 break;
1303         default:
1304                 return -EOPNOTSUPP;
1305         }
1306
1307         return 0;
1308 }
1309
1310 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1311 {
1312         /* Not implemented, queues only on kernel side */
1313 }
1314
1315 static void hw_scan_work(struct work_struct *work)
1316 {
1317         struct mac80211_hwsim_data *hwsim =
1318                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1319         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1320         int dwell, i;
1321
1322         mutex_lock(&hwsim->mutex);
1323         if (hwsim->scan_chan_idx >= req->n_channels) {
1324                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1325                 ieee80211_scan_completed(hwsim->hw, false);
1326                 hwsim->hw_scan_request = NULL;
1327                 hwsim->hw_scan_vif = NULL;
1328                 hwsim->tmp_chan = NULL;
1329                 mutex_unlock(&hwsim->mutex);
1330                 return;
1331         }
1332
1333         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1334                     req->channels[hwsim->scan_chan_idx]->center_freq);
1335
1336         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1337         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
1338             !req->n_ssids) {
1339                 dwell = 120;
1340         } else {
1341                 dwell = 30;
1342                 /* send probes */
1343                 for (i = 0; i < req->n_ssids; i++) {
1344                         struct sk_buff *probe;
1345
1346                         probe = ieee80211_probereq_get(hwsim->hw,
1347                                                        hwsim->hw_scan_vif,
1348                                                        req->ssids[i].ssid,
1349                                                        req->ssids[i].ssid_len,
1350                                                        req->ie_len);
1351                         if (!probe)
1352                                 continue;
1353
1354                         if (req->ie_len)
1355                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1356                                        req->ie_len);
1357
1358                         local_bh_disable();
1359                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1360                                                 hwsim->tmp_chan);
1361                         local_bh_enable();
1362                 }
1363         }
1364         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1365                                      msecs_to_jiffies(dwell));
1366         hwsim->scan_chan_idx++;
1367         mutex_unlock(&hwsim->mutex);
1368 }
1369
1370 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1371                                   struct ieee80211_vif *vif,
1372                                   struct cfg80211_scan_request *req)
1373 {
1374         struct mac80211_hwsim_data *hwsim = hw->priv;
1375
1376         mutex_lock(&hwsim->mutex);
1377         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1378                 mutex_unlock(&hwsim->mutex);
1379                 return -EBUSY;
1380         }
1381         hwsim->hw_scan_request = req;
1382         hwsim->hw_scan_vif = vif;
1383         hwsim->scan_chan_idx = 0;
1384         mutex_unlock(&hwsim->mutex);
1385
1386         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1387
1388         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1389
1390         return 0;
1391 }
1392
1393 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1394                                           struct ieee80211_vif *vif)
1395 {
1396         struct mac80211_hwsim_data *hwsim = hw->priv;
1397
1398         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1399
1400         cancel_delayed_work_sync(&hwsim->hw_scan);
1401
1402         mutex_lock(&hwsim->mutex);
1403         ieee80211_scan_completed(hwsim->hw, true);
1404         hwsim->tmp_chan = NULL;
1405         hwsim->hw_scan_request = NULL;
1406         hwsim->hw_scan_vif = NULL;
1407         mutex_unlock(&hwsim->mutex);
1408 }
1409
1410 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1411 {
1412         struct mac80211_hwsim_data *hwsim = hw->priv;
1413
1414         mutex_lock(&hwsim->mutex);
1415
1416         if (hwsim->scanning) {
1417                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1418                 goto out;
1419         }
1420
1421         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1422         hwsim->scanning = true;
1423
1424 out:
1425         mutex_unlock(&hwsim->mutex);
1426 }
1427
1428 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1429 {
1430         struct mac80211_hwsim_data *hwsim = hw->priv;
1431
1432         mutex_lock(&hwsim->mutex);
1433
1434         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1435         hwsim->scanning = false;
1436
1437         mutex_unlock(&hwsim->mutex);
1438 }
1439
1440 static void hw_roc_done(struct work_struct *work)
1441 {
1442         struct mac80211_hwsim_data *hwsim =
1443                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1444
1445         mutex_lock(&hwsim->mutex);
1446         ieee80211_remain_on_channel_expired(hwsim->hw);
1447         hwsim->tmp_chan = NULL;
1448         mutex_unlock(&hwsim->mutex);
1449
1450         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1451 }
1452
1453 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1454                               struct ieee80211_vif *vif,
1455                               struct ieee80211_channel *chan,
1456                               int duration)
1457 {
1458         struct mac80211_hwsim_data *hwsim = hw->priv;
1459
1460         mutex_lock(&hwsim->mutex);
1461         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1462                 mutex_unlock(&hwsim->mutex);
1463                 return -EBUSY;
1464         }
1465
1466         hwsim->tmp_chan = chan;
1467         mutex_unlock(&hwsim->mutex);
1468
1469         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1470                     chan->center_freq, duration);
1471
1472         ieee80211_ready_on_channel(hw);
1473
1474         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1475                                      msecs_to_jiffies(duration));
1476         return 0;
1477 }
1478
1479 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1480 {
1481         struct mac80211_hwsim_data *hwsim = hw->priv;
1482
1483         cancel_delayed_work_sync(&hwsim->roc_done);
1484
1485         mutex_lock(&hwsim->mutex);
1486         hwsim->tmp_chan = NULL;
1487         mutex_unlock(&hwsim->mutex);
1488
1489         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1490
1491         return 0;
1492 }
1493
1494 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1495                                       struct ieee80211_chanctx_conf *ctx)
1496 {
1497         hwsim_set_chanctx_magic(ctx);
1498         wiphy_debug(hw->wiphy,
1499                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1500                     ctx->def.chan->center_freq, ctx->def.width,
1501                     ctx->def.center_freq1, ctx->def.center_freq2);
1502         return 0;
1503 }
1504
1505 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1506                                           struct ieee80211_chanctx_conf *ctx)
1507 {
1508         wiphy_debug(hw->wiphy,
1509                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1510                     ctx->def.chan->center_freq, ctx->def.width,
1511                     ctx->def.center_freq1, ctx->def.center_freq2);
1512         hwsim_check_chanctx_magic(ctx);
1513         hwsim_clear_chanctx_magic(ctx);
1514 }
1515
1516 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1517                                           struct ieee80211_chanctx_conf *ctx,
1518                                           u32 changed)
1519 {
1520         hwsim_check_chanctx_magic(ctx);
1521         wiphy_debug(hw->wiphy,
1522                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1523                     ctx->def.chan->center_freq, ctx->def.width,
1524                     ctx->def.center_freq1, ctx->def.center_freq2);
1525 }
1526
1527 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1528                                              struct ieee80211_vif *vif,
1529                                              struct ieee80211_chanctx_conf *ctx)
1530 {
1531         hwsim_check_magic(vif);
1532         hwsim_check_chanctx_magic(ctx);
1533
1534         return 0;
1535 }
1536
1537 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1538                                                 struct ieee80211_vif *vif,
1539                                                 struct ieee80211_chanctx_conf *ctx)
1540 {
1541         hwsim_check_magic(vif);
1542         hwsim_check_chanctx_magic(ctx);
1543 }
1544
1545 static struct ieee80211_ops mac80211_hwsim_ops =
1546 {
1547         .tx = mac80211_hwsim_tx,
1548         .start = mac80211_hwsim_start,
1549         .stop = mac80211_hwsim_stop,
1550         .add_interface = mac80211_hwsim_add_interface,
1551         .change_interface = mac80211_hwsim_change_interface,
1552         .remove_interface = mac80211_hwsim_remove_interface,
1553         .config = mac80211_hwsim_config,
1554         .configure_filter = mac80211_hwsim_configure_filter,
1555         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1556         .sta_add = mac80211_hwsim_sta_add,
1557         .sta_remove = mac80211_hwsim_sta_remove,
1558         .sta_notify = mac80211_hwsim_sta_notify,
1559         .set_tim = mac80211_hwsim_set_tim,
1560         .conf_tx = mac80211_hwsim_conf_tx,
1561         .get_survey = mac80211_hwsim_get_survey,
1562         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1563         .ampdu_action = mac80211_hwsim_ampdu_action,
1564         .sw_scan_start = mac80211_hwsim_sw_scan,
1565         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1566         .flush = mac80211_hwsim_flush,
1567         .get_tsf = mac80211_hwsim_get_tsf,
1568         .set_tsf = mac80211_hwsim_set_tsf,
1569 };
1570
1571
1572 static void mac80211_hwsim_free(void)
1573 {
1574         struct list_head tmplist, *i, *tmp;
1575         struct mac80211_hwsim_data *data, *tmpdata;
1576
1577         INIT_LIST_HEAD(&tmplist);
1578
1579         spin_lock_bh(&hwsim_radio_lock);
1580         list_for_each_safe(i, tmp, &hwsim_radios)
1581                 list_move(i, &tmplist);
1582         spin_unlock_bh(&hwsim_radio_lock);
1583
1584         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1585                 debugfs_remove(data->debugfs_group);
1586                 debugfs_remove(data->debugfs_ps);
1587                 debugfs_remove(data->debugfs);
1588                 ieee80211_unregister_hw(data->hw);
1589                 device_unregister(data->dev);
1590                 ieee80211_free_hw(data->hw);
1591         }
1592         class_destroy(hwsim_class);
1593 }
1594
1595
1596 static struct device_driver mac80211_hwsim_driver = {
1597         .name = "mac80211_hwsim"
1598 };
1599
1600 static const struct net_device_ops hwsim_netdev_ops = {
1601         .ndo_start_xmit         = hwsim_mon_xmit,
1602         .ndo_change_mtu         = eth_change_mtu,
1603         .ndo_set_mac_address    = eth_mac_addr,
1604         .ndo_validate_addr      = eth_validate_addr,
1605 };
1606
1607 static void hwsim_mon_setup(struct net_device *dev)
1608 {
1609         dev->netdev_ops = &hwsim_netdev_ops;
1610         dev->destructor = free_netdev;
1611         ether_setup(dev);
1612         dev->tx_queue_len = 0;
1613         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1614         memset(dev->dev_addr, 0, ETH_ALEN);
1615         dev->dev_addr[0] = 0x12;
1616 }
1617
1618
1619 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1620 {
1621         struct mac80211_hwsim_data *data = dat;
1622         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1623         struct sk_buff *skb;
1624         struct ieee80211_pspoll *pspoll;
1625
1626         if (!vp->assoc)
1627                 return;
1628
1629         wiphy_debug(data->hw->wiphy,
1630                     "%s: send PS-Poll to %pM for aid %d\n",
1631                     __func__, vp->bssid, vp->aid);
1632
1633         skb = dev_alloc_skb(sizeof(*pspoll));
1634         if (!skb)
1635                 return;
1636         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1637         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1638                                             IEEE80211_STYPE_PSPOLL |
1639                                             IEEE80211_FCTL_PM);
1640         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1641         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1642         memcpy(pspoll->ta, mac, ETH_ALEN);
1643
1644         rcu_read_lock();
1645         mac80211_hwsim_tx_frame(data->hw, skb,
1646                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1647         rcu_read_unlock();
1648 }
1649
1650 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1651                                 struct ieee80211_vif *vif, int ps)
1652 {
1653         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1654         struct sk_buff *skb;
1655         struct ieee80211_hdr *hdr;
1656
1657         if (!vp->assoc)
1658                 return;
1659
1660         wiphy_debug(data->hw->wiphy,
1661                     "%s: send data::nullfunc to %pM ps=%d\n",
1662                     __func__, vp->bssid, ps);
1663
1664         skb = dev_alloc_skb(sizeof(*hdr));
1665         if (!skb)
1666                 return;
1667         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1668         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1669                                          IEEE80211_STYPE_NULLFUNC |
1670                                          (ps ? IEEE80211_FCTL_PM : 0));
1671         hdr->duration_id = cpu_to_le16(0);
1672         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1673         memcpy(hdr->addr2, mac, ETH_ALEN);
1674         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1675
1676         rcu_read_lock();
1677         mac80211_hwsim_tx_frame(data->hw, skb,
1678                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1679         rcu_read_unlock();
1680 }
1681
1682
1683 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1684                                    struct ieee80211_vif *vif)
1685 {
1686         struct mac80211_hwsim_data *data = dat;
1687         hwsim_send_nullfunc(data, mac, vif, 1);
1688 }
1689
1690
1691 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1692                                       struct ieee80211_vif *vif)
1693 {
1694         struct mac80211_hwsim_data *data = dat;
1695         hwsim_send_nullfunc(data, mac, vif, 0);
1696 }
1697
1698
1699 static int hwsim_fops_ps_read(void *dat, u64 *val)
1700 {
1701         struct mac80211_hwsim_data *data = dat;
1702         *val = data->ps;
1703         return 0;
1704 }
1705
1706 static int hwsim_fops_ps_write(void *dat, u64 val)
1707 {
1708         struct mac80211_hwsim_data *data = dat;
1709         enum ps_mode old_ps;
1710
1711         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1712             val != PS_MANUAL_POLL)
1713                 return -EINVAL;
1714
1715         old_ps = data->ps;
1716         data->ps = val;
1717
1718         if (val == PS_MANUAL_POLL) {
1719                 ieee80211_iterate_active_interfaces(data->hw,
1720                                                     IEEE80211_IFACE_ITER_NORMAL,
1721                                                     hwsim_send_ps_poll, data);
1722                 data->ps_poll_pending = true;
1723         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1724                 ieee80211_iterate_active_interfaces(data->hw,
1725                                                     IEEE80211_IFACE_ITER_NORMAL,
1726                                                     hwsim_send_nullfunc_ps,
1727                                                     data);
1728         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1729                 ieee80211_iterate_active_interfaces(data->hw,
1730                                                     IEEE80211_IFACE_ITER_NORMAL,
1731                                                     hwsim_send_nullfunc_no_ps,
1732                                                     data);
1733         }
1734
1735         return 0;
1736 }
1737
1738 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1739                         "%llu\n");
1740
1741
1742 static int hwsim_fops_group_read(void *dat, u64 *val)
1743 {
1744         struct mac80211_hwsim_data *data = dat;
1745         *val = data->group;
1746         return 0;
1747 }
1748
1749 static int hwsim_fops_group_write(void *dat, u64 val)
1750 {
1751         struct mac80211_hwsim_data *data = dat;
1752         data->group = val;
1753         return 0;
1754 }
1755
1756 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1757                         hwsim_fops_group_read, hwsim_fops_group_write,
1758                         "%llx\n");
1759
1760 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1761                              struct mac_address *addr)
1762 {
1763         struct mac80211_hwsim_data *data;
1764         bool _found = false;
1765
1766         spin_lock_bh(&hwsim_radio_lock);
1767         list_for_each_entry(data, &hwsim_radios, list) {
1768                 if (memcmp(data->addresses[1].addr, addr,
1769                           sizeof(struct mac_address)) == 0) {
1770                         _found = true;
1771                         break;
1772                 }
1773         }
1774         spin_unlock_bh(&hwsim_radio_lock);
1775
1776         if (!_found)
1777                 return NULL;
1778
1779         return data;
1780 }
1781
1782 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1783                                            struct genl_info *info)
1784 {
1785
1786         struct ieee80211_hdr *hdr;
1787         struct mac80211_hwsim_data *data2;
1788         struct ieee80211_tx_info *txi;
1789         struct hwsim_tx_rate *tx_attempts;
1790         unsigned long ret_skb_ptr;
1791         struct sk_buff *skb, *tmp;
1792         struct mac_address *src;
1793         unsigned int hwsim_flags;
1794
1795         int i;
1796         bool found = false;
1797
1798         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1799            !info->attrs[HWSIM_ATTR_FLAGS] ||
1800            !info->attrs[HWSIM_ATTR_COOKIE] ||
1801            !info->attrs[HWSIM_ATTR_TX_INFO])
1802                 goto out;
1803
1804         src = (struct mac_address *)nla_data(
1805                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1806         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1807
1808         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1809
1810         data2 = get_hwsim_data_ref_from_addr(src);
1811
1812         if (data2 == NULL)
1813                 goto out;
1814
1815         /* look for the skb matching the cookie passed back from user */
1816         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1817                 if ((unsigned long)skb == ret_skb_ptr) {
1818                         skb_unlink(skb, &data2->pending);
1819                         found = true;
1820                         break;
1821                 }
1822         }
1823
1824         /* not found */
1825         if (!found)
1826                 goto out;
1827
1828         /* Tx info received because the frame was broadcasted on user space,
1829          so we get all the necessary info: tx attempts and skb control buff */
1830
1831         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1832                        info->attrs[HWSIM_ATTR_TX_INFO]);
1833
1834         /* now send back TX status */
1835         txi = IEEE80211_SKB_CB(skb);
1836
1837         ieee80211_tx_info_clear_status(txi);
1838
1839         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1840                 txi->status.rates[i].idx = tx_attempts[i].idx;
1841                 txi->status.rates[i].count = tx_attempts[i].count;
1842                 /*txi->status.rates[i].flags = 0;*/
1843         }
1844
1845         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1846
1847         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1848            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1849                 if (skb->len >= 16) {
1850                         hdr = (struct ieee80211_hdr *) skb->data;
1851                         mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
1852                                                    hdr->addr2);
1853                 }
1854                 txi->flags |= IEEE80211_TX_STAT_ACK;
1855         }
1856         ieee80211_tx_status_irqsafe(data2->hw, skb);
1857         return 0;
1858 out:
1859         return -EINVAL;
1860
1861 }
1862
1863 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1864                                           struct genl_info *info)
1865 {
1866
1867         struct mac80211_hwsim_data *data2;
1868         struct ieee80211_rx_status rx_status;
1869         struct mac_address *dst;
1870         int frame_data_len;
1871         char *frame_data;
1872         struct sk_buff *skb = NULL;
1873
1874         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1875             !info->attrs[HWSIM_ATTR_FRAME] ||
1876             !info->attrs[HWSIM_ATTR_RX_RATE] ||
1877             !info->attrs[HWSIM_ATTR_SIGNAL])
1878                 goto out;
1879
1880         dst = (struct mac_address *)nla_data(
1881                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1882
1883         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1884         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1885
1886         /* Allocate new skb here */
1887         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1888         if (skb == NULL)
1889                 goto err;
1890
1891         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1892                 /* Copy the data */
1893                 memcpy(skb_put(skb, frame_data_len), frame_data,
1894                        frame_data_len);
1895         } else
1896                 goto err;
1897
1898         data2 = get_hwsim_data_ref_from_addr(dst);
1899
1900         if (data2 == NULL)
1901                 goto out;
1902
1903         /* check if radio is configured properly */
1904
1905         if (data2->idle || !data2->started)
1906                 goto out;
1907
1908         /*A frame is received from user space*/
1909         memset(&rx_status, 0, sizeof(rx_status));
1910         rx_status.freq = data2->channel->center_freq;
1911         rx_status.band = data2->channel->band;
1912         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1913         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1914
1915         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1916         ieee80211_rx_irqsafe(data2->hw, skb);
1917
1918         return 0;
1919 err:
1920         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1921         goto out;
1922 out:
1923         dev_kfree_skb(skb);
1924         return -EINVAL;
1925 }
1926
1927 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1928                                       struct genl_info *info)
1929 {
1930         if (info == NULL)
1931                 goto out;
1932
1933         wmediumd_portid = info->snd_portid;
1934
1935         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1936                "switching to wmediumd mode with pid %d\n", info->snd_portid);
1937
1938         return 0;
1939 out:
1940         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1941         return -EINVAL;
1942 }
1943
1944 /* Generic Netlink operations array */
1945 static struct genl_ops hwsim_ops[] = {
1946         {
1947                 .cmd = HWSIM_CMD_REGISTER,
1948                 .policy = hwsim_genl_policy,
1949                 .doit = hwsim_register_received_nl,
1950                 .flags = GENL_ADMIN_PERM,
1951         },
1952         {
1953                 .cmd = HWSIM_CMD_FRAME,
1954                 .policy = hwsim_genl_policy,
1955                 .doit = hwsim_cloned_frame_received_nl,
1956         },
1957         {
1958                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1959                 .policy = hwsim_genl_policy,
1960                 .doit = hwsim_tx_info_frame_received_nl,
1961         },
1962 };
1963
1964 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1965                                          unsigned long state,
1966                                          void *_notify)
1967 {
1968         struct netlink_notify *notify = _notify;
1969
1970         if (state != NETLINK_URELEASE)
1971                 return NOTIFY_DONE;
1972
1973         if (notify->portid == wmediumd_portid) {
1974                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1975                        " socket, switching to perfect channel medium\n");
1976                 wmediumd_portid = 0;
1977         }
1978         return NOTIFY_DONE;
1979
1980 }
1981
1982 static struct notifier_block hwsim_netlink_notifier = {
1983         .notifier_call = mac80211_hwsim_netlink_notify,
1984 };
1985
1986 static int hwsim_init_netlink(void)
1987 {
1988         int rc;
1989
1990         /* userspace test API hasn't been adjusted for multi-channel */
1991         if (channels > 1)
1992                 return 0;
1993
1994         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1995
1996         rc = genl_register_family_with_ops(&hwsim_genl_family,
1997                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1998         if (rc)
1999                 goto failure;
2000
2001         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2002         if (rc)
2003                 goto failure;
2004
2005         return 0;
2006
2007 failure:
2008         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2009         return -EINVAL;
2010 }
2011
2012 static void hwsim_exit_netlink(void)
2013 {
2014         int ret;
2015
2016         /* userspace test API hasn't been adjusted for multi-channel */
2017         if (channels > 1)
2018                 return;
2019
2020         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2021         /* unregister the notifier */
2022         netlink_unregister_notifier(&hwsim_netlink_notifier);
2023         /* unregister the family */
2024         ret = genl_unregister_family(&hwsim_genl_family);
2025         if (ret)
2026                 printk(KERN_DEBUG "mac80211_hwsim: "
2027                        "unregister family %i\n", ret);
2028 }
2029
2030 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2031         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2032         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2033                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2034 #ifdef CONFIG_MAC80211_MESH
2035                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2036 #endif
2037                                  BIT(NL80211_IFTYPE_AP) |
2038                                  BIT(NL80211_IFTYPE_P2P_GO) },
2039         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2040 };
2041
2042 static struct ieee80211_iface_combination hwsim_if_comb = {
2043         .limits = hwsim_if_limits,
2044         .n_limits = ARRAY_SIZE(hwsim_if_limits),
2045         .max_interfaces = 2048,
2046         .num_different_channels = 1,
2047 };
2048
2049 static int __init init_mac80211_hwsim(void)
2050 {
2051         int i, err = 0;
2052         u8 addr[ETH_ALEN];
2053         struct mac80211_hwsim_data *data;
2054         struct ieee80211_hw *hw;
2055         enum ieee80211_band band;
2056
2057         if (radios < 1 || radios > 100)
2058                 return -EINVAL;
2059
2060         if (channels < 1)
2061                 return -EINVAL;
2062
2063         if (channels > 1) {
2064                 hwsim_if_comb.num_different_channels = channels;
2065                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2066                 mac80211_hwsim_ops.cancel_hw_scan =
2067                         mac80211_hwsim_cancel_hw_scan;
2068                 mac80211_hwsim_ops.sw_scan_start = NULL;
2069                 mac80211_hwsim_ops.sw_scan_complete = NULL;
2070                 mac80211_hwsim_ops.remain_on_channel =
2071                         mac80211_hwsim_roc;
2072                 mac80211_hwsim_ops.cancel_remain_on_channel =
2073                         mac80211_hwsim_croc;
2074                 mac80211_hwsim_ops.add_chanctx =
2075                         mac80211_hwsim_add_chanctx;
2076                 mac80211_hwsim_ops.remove_chanctx =
2077                         mac80211_hwsim_remove_chanctx;
2078                 mac80211_hwsim_ops.change_chanctx =
2079                         mac80211_hwsim_change_chanctx;
2080                 mac80211_hwsim_ops.assign_vif_chanctx =
2081                         mac80211_hwsim_assign_vif_chanctx;
2082                 mac80211_hwsim_ops.unassign_vif_chanctx =
2083                         mac80211_hwsim_unassign_vif_chanctx;
2084         }
2085
2086         spin_lock_init(&hwsim_radio_lock);
2087         INIT_LIST_HEAD(&hwsim_radios);
2088
2089         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2090         if (IS_ERR(hwsim_class))
2091                 return PTR_ERR(hwsim_class);
2092
2093         memset(addr, 0, ETH_ALEN);
2094         addr[0] = 0x02;
2095
2096         for (i = 0; i < radios; i++) {
2097                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2098                        i);
2099                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2100                 if (!hw) {
2101                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2102                                "failed\n");
2103                         err = -ENOMEM;
2104                         goto failed;
2105                 }
2106                 data = hw->priv;
2107                 data->hw = hw;
2108
2109                 data->dev = device_create(hwsim_class, NULL, 0, hw,
2110                                           "hwsim%d", i);
2111                 if (IS_ERR(data->dev)) {
2112                         printk(KERN_DEBUG
2113                                "mac80211_hwsim: device_create "
2114                                "failed (%ld)\n", PTR_ERR(data->dev));
2115                         err = -ENOMEM;
2116                         goto failed_drvdata;
2117                 }
2118                 data->dev->driver = &mac80211_hwsim_driver;
2119                 skb_queue_head_init(&data->pending);
2120
2121                 SET_IEEE80211_DEV(hw, data->dev);
2122                 addr[3] = i >> 8;
2123                 addr[4] = i;
2124                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2125                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2126                 data->addresses[1].addr[0] |= 0x40;
2127                 hw->wiphy->n_addresses = 2;
2128                 hw->wiphy->addresses = data->addresses;
2129
2130                 hw->wiphy->iface_combinations = &hwsim_if_comb;
2131                 hw->wiphy->n_iface_combinations = 1;
2132
2133                 if (channels > 1) {
2134                         hw->wiphy->max_scan_ssids = 255;
2135                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2136                         hw->wiphy->max_remain_on_channel_duration = 1000;
2137                 }
2138
2139                 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2140                 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2141
2142                 hw->channel_change_time = 1;
2143                 hw->queues = 5;
2144                 hw->offchannel_tx_hw_queue = 4;
2145                 hw->wiphy->interface_modes =
2146                         BIT(NL80211_IFTYPE_STATION) |
2147                         BIT(NL80211_IFTYPE_AP) |
2148                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
2149                         BIT(NL80211_IFTYPE_P2P_GO) |
2150                         BIT(NL80211_IFTYPE_ADHOC) |
2151                         BIT(NL80211_IFTYPE_MESH_POINT) |
2152                         BIT(NL80211_IFTYPE_P2P_DEVICE);
2153
2154                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2155                             IEEE80211_HW_SIGNAL_DBM |
2156                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2157                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2158                             IEEE80211_HW_AMPDU_AGGREGATION |
2159                             IEEE80211_HW_WANT_MONITOR_VIF |
2160                             IEEE80211_HW_QUEUE_CONTROL;
2161
2162                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2163                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2164
2165                 /* ask mac80211 to reserve space for magic */
2166                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2167                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2168
2169                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2170                         sizeof(hwsim_channels_2ghz));
2171                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2172                         sizeof(hwsim_channels_5ghz));
2173                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2174
2175                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2176                         struct ieee80211_supported_band *sband = &data->bands[band];
2177                         switch (band) {
2178                         case IEEE80211_BAND_2GHZ:
2179                                 sband->channels = data->channels_2ghz;
2180                                 sband->n_channels =
2181                                         ARRAY_SIZE(hwsim_channels_2ghz);
2182                                 sband->bitrates = data->rates;
2183                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2184                                 break;
2185                         case IEEE80211_BAND_5GHZ:
2186                                 sband->channels = data->channels_5ghz;
2187                                 sband->n_channels =
2188                                         ARRAY_SIZE(hwsim_channels_5ghz);
2189                                 sband->bitrates = data->rates + 4;
2190                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2191                                 break;
2192                         default:
2193                                 continue;
2194                         }
2195
2196                         sband->ht_cap.ht_supported = true;
2197                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2198                                 IEEE80211_HT_CAP_GRN_FLD |
2199                                 IEEE80211_HT_CAP_SGI_40 |
2200                                 IEEE80211_HT_CAP_DSSSCCK40;
2201                         sband->ht_cap.ampdu_factor = 0x3;
2202                         sband->ht_cap.ampdu_density = 0x6;
2203                         memset(&sband->ht_cap.mcs, 0,
2204                                sizeof(sband->ht_cap.mcs));
2205                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
2206                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
2207                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2208
2209                         hw->wiphy->bands[band] = sband;
2210
2211                         if (channels == 1)
2212                                 continue;
2213
2214                         sband->vht_cap.vht_supported = true;
2215                         sband->vht_cap.cap =
2216                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2217                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2218                                 IEEE80211_VHT_CAP_RXLDPC |
2219                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2220                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2221                                 IEEE80211_VHT_CAP_TXSTBC |
2222                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2223                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2224                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2225                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2226                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2227                         sband->vht_cap.vht_mcs.rx_mcs_map =
2228                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2229                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2230                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2231                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2232                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2233                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2234                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2235                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2236                         sband->vht_cap.vht_mcs.tx_mcs_map =
2237                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2238                 }
2239                 /* By default all radios are belonging to the first group */
2240                 data->group = 1;
2241                 mutex_init(&data->mutex);
2242
2243                 /* Enable frame retransmissions for lossy channels */
2244                 hw->max_rates = 4;
2245                 hw->max_rate_tries = 11;
2246
2247                 /* Work to be done prior to ieee80211_register_hw() */
2248                 switch (regtest) {
2249                 case HWSIM_REGTEST_DISABLED:
2250                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2251                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2252                 case HWSIM_REGTEST_DIFF_COUNTRY:
2253                         /*
2254                          * Nothing to be done for driver regulatory domain
2255                          * hints prior to ieee80211_register_hw()
2256                          */
2257                         break;
2258                 case HWSIM_REGTEST_WORLD_ROAM:
2259                         if (i == 0) {
2260                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2261                                 wiphy_apply_custom_regulatory(hw->wiphy,
2262                                         &hwsim_world_regdom_custom_01);
2263                         }
2264                         break;
2265                 case HWSIM_REGTEST_CUSTOM_WORLD:
2266                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2267                         wiphy_apply_custom_regulatory(hw->wiphy,
2268                                 &hwsim_world_regdom_custom_01);
2269                         break;
2270                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2271                         if (i == 0) {
2272                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2273                                 wiphy_apply_custom_regulatory(hw->wiphy,
2274                                         &hwsim_world_regdom_custom_01);
2275                         } else if (i == 1) {
2276                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2277                                 wiphy_apply_custom_regulatory(hw->wiphy,
2278                                         &hwsim_world_regdom_custom_02);
2279                         }
2280                         break;
2281                 case HWSIM_REGTEST_STRICT_ALL:
2282                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2283                         break;
2284                 case HWSIM_REGTEST_STRICT_FOLLOW:
2285                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2286                         if (i == 0)
2287                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2288                         break;
2289                 case HWSIM_REGTEST_ALL:
2290                         if (i == 0) {
2291                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2292                                 wiphy_apply_custom_regulatory(hw->wiphy,
2293                                         &hwsim_world_regdom_custom_01);
2294                         } else if (i == 1) {
2295                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2296                                 wiphy_apply_custom_regulatory(hw->wiphy,
2297                                         &hwsim_world_regdom_custom_02);
2298                         } else if (i == 4)
2299                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2300                         break;
2301                 default:
2302                         break;
2303                 }
2304
2305                 /* give the regulatory workqueue a chance to run */
2306                 if (regtest)
2307                         schedule_timeout_interruptible(1);
2308                 err = ieee80211_register_hw(hw);
2309                 if (err < 0) {
2310                         printk(KERN_DEBUG "mac80211_hwsim: "
2311                                "ieee80211_register_hw failed (%d)\n", err);
2312                         goto failed_hw;
2313                 }
2314
2315                 /* Work to be done after to ieee80211_register_hw() */
2316                 switch (regtest) {
2317                 case HWSIM_REGTEST_WORLD_ROAM:
2318                 case HWSIM_REGTEST_DISABLED:
2319                         break;
2320                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2321                         if (!i)
2322                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2323                         break;
2324                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2325                 case HWSIM_REGTEST_STRICT_ALL:
2326                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2327                         break;
2328                 case HWSIM_REGTEST_DIFF_COUNTRY:
2329                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2330                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2331                         break;
2332                 case HWSIM_REGTEST_CUSTOM_WORLD:
2333                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2334                         /*
2335                          * Nothing to be done for custom world regulatory
2336                          * domains after to ieee80211_register_hw
2337                          */
2338                         break;
2339                 case HWSIM_REGTEST_STRICT_FOLLOW:
2340                         if (i == 0)
2341                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2342                         break;
2343                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2344                         if (i == 0)
2345                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2346                         else if (i == 1)
2347                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2348                         break;
2349                 case HWSIM_REGTEST_ALL:
2350                         if (i == 2)
2351                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2352                         else if (i == 3)
2353                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2354                         else if (i == 4)
2355                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2356                         break;
2357                 default:
2358                         break;
2359                 }
2360
2361                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2362                             hw->wiphy->perm_addr);
2363
2364                 data->debugfs = debugfs_create_dir("hwsim",
2365                                                    hw->wiphy->debugfsdir);
2366                 data->debugfs_ps = debugfs_create_file("ps", 0666,
2367                                                        data->debugfs, data,
2368                                                        &hwsim_fops_ps);
2369                 data->debugfs_group = debugfs_create_file("group", 0666,
2370                                                         data->debugfs, data,
2371                                                         &hwsim_fops_group);
2372
2373                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
2374                             (unsigned long) hw);
2375
2376                 list_add_tail(&data->list, &hwsim_radios);
2377         }
2378
2379         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2380         if (hwsim_mon == NULL)
2381                 goto failed;
2382
2383         rtnl_lock();
2384
2385         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2386         if (err < 0)
2387                 goto failed_mon;
2388
2389
2390         err = register_netdevice(hwsim_mon);
2391         if (err < 0)
2392                 goto failed_mon;
2393
2394         rtnl_unlock();
2395
2396         err = hwsim_init_netlink();
2397         if (err < 0)
2398                 goto failed_nl;
2399
2400         return 0;
2401
2402 failed_nl:
2403         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2404         return err;
2405
2406 failed_mon:
2407         rtnl_unlock();
2408         free_netdev(hwsim_mon);
2409         mac80211_hwsim_free();
2410         return err;
2411
2412 failed_hw:
2413         device_unregister(data->dev);
2414 failed_drvdata:
2415         ieee80211_free_hw(hw);
2416 failed:
2417         mac80211_hwsim_free();
2418         return err;
2419 }
2420 module_init(init_mac80211_hwsim);
2421
2422 static void __exit exit_mac80211_hwsim(void)
2423 {
2424         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2425
2426         hwsim_exit_netlink();
2427
2428         mac80211_hwsim_free();
2429         unregister_netdev(hwsim_mon);
2430 }
2431 module_exit(exit_mac80211_hwsim);