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 static bool paged_rx = false;
  52 module_param(paged_rx, bool, 0644);
  53 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  54
  55 /**
  56  * enum hwsim_regtest - the type of regulatory tests we offer
  57  *
  58  * These are the different values you can use for the regtest
  59  * module parameter. This is useful to help test world roaming
  60  * and the driver regulatory_hint() call and combinations of these.
  61  * If you want to do specific alpha2 regulatory domain tests simply
  62  * use the userspace regulatory request as that will be respected as
  63  * well without the need of this module parameter. This is designed
  64  * only for testing the driver regulatory request, world roaming
  65  * and all possible combinations.
  66  *
  67  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  68  *      this is the default value.
  69  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  70  *      hint, only one driver regulatory hint will be sent as such the
  71  *      secondary radios are expected to follow.
  72  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  73  *      request with all radios reporting the same regulatory domain.
  74  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  75  *      different regulatory domains requests. Expected behaviour is for
  76  *      an intersection to occur but each device will still use their
  77  *      respective regulatory requested domains. Subsequent radios will
  78  *      use the resulting intersection.
  79  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  80  *      this by using a custom beacon-capable regulatory domain for the first
  81  *      radio. All other device world roam.
  82  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  83  *      domain requests. All radios will adhere to this custom world regulatory
  84  *      domain.
  85  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  86  *      domain requests. The first radio will adhere to the first custom world
  87  *      regulatory domain, the second one to the second custom world regulatory
  88  *      domain. All other devices will world roam.
  89  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  90  *      settings, only the first radio will send a regulatory domain request
  91  *      and use strict settings. The rest of the radios are expected to follow.
  92  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  93  *      settings. All radios will adhere to this.
  94  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  95  *      domain settings, combined with secondary driver regulatory domain
  96  *      settings. The first radio will get a strict regulatory domain setting
  97  *      using the first driver regulatory request and the second radio will use
  98  *      non-strict settings using the second driver regulatory request. All
  99  *      other devices should follow the intersection created between the
 100  *      first two.
 101  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 102  *      at least 6 radios for a complete test. We will test in this order:
 103  *      1 - driver custom world regulatory domain
 104  *      2 - second custom world regulatory domain
 105  *      3 - first driver regulatory domain request
 106  *      4 - second driver regulatory domain request
 107  *      5 - strict regulatory domain settings using the third driver regulatory
 108  *          domain request
 109  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 110  *                 regulatory requests.
 111  */
 112 enum hwsim_regtest {
 113         HWSIM_REGTEST_DISABLED = 0,
 114         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 115         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 116         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 117         HWSIM_REGTEST_WORLD_ROAM = 4,
 118         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 119         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 120         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 121         HWSIM_REGTEST_STRICT_ALL = 8,
 122         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 123         HWSIM_REGTEST_ALL = 10,
 124 };
 125
 126 /* Set to one of the HWSIM_REGTEST_* values above */
 127 static int regtest = HWSIM_REGTEST_DISABLED;
 128 module_param(regtest, int, 0444);
 129 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 130
 131 static const char *hwsim_alpha2s[] = {
 132         "FI",
 133         "AL",
 134         "US",
 135         "DE",
 136         "JP",
 137         "AL",
 138 };
 139
 140 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 141         .n_reg_rules = 4,
 142         .alpha2 =  "99",
 143         .reg_rules = {
 144                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 145                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 146                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 147                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 148         }
 149 };
 150
 151 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 152         .n_reg_rules = 2,
 153         .alpha2 =  "99",
 154         .reg_rules = {
 155                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 156                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 157                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 158         }
 159 };
 160
 161 struct hwsim_vif_priv {
 162         u32 magic;
 163         u8 bssid[ETH_ALEN];
 164         bool assoc;
 165         u16 aid;
 166 };
 167
 168 #define HWSIM_VIF_MAGIC 0x69537748
 169
 170 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 171 {
 172         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 173         WARN(vp->magic != HWSIM_VIF_MAGIC,
 174              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 175              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 176 }
 177
 178 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 179 {
 180         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 181         vp->magic = HWSIM_VIF_MAGIC;
 182 }
 183
 184 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 185 {
 186         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 187         vp->magic = 0;
 188 }
 189
 190 struct hwsim_sta_priv {
 191         u32 magic;
 192 };
 193
 194 #define HWSIM_STA_MAGIC 0x6d537749
 195
 196 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 197 {
 198         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 199         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 200 }
 201
 202 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 203 {
 204         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 205         sp->magic = HWSIM_STA_MAGIC;
 206 }
 207
 208 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 209 {
 210         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 211         sp->magic = 0;
 212 }
 213
 214 struct hwsim_chanctx_priv {
 215         u32 magic;
 216 };
 217
 218 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 219
 220 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 221 {
 222         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 223         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 224 }
 225
 226 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 227 {
 228         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 229         cp->magic = HWSIM_CHANCTX_MAGIC;
 230 }
 231
 232 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 233 {
 234         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 235         cp->magic = 0;
 236 }
 237
 238 static struct class *hwsim_class;
 239
 240 static struct net_device *hwsim_mon; /* global monitor netdev */
 241
 242 #define CHAN2G(_freq)  { \
 243         .band = IEEE80211_BAND_2GHZ, \
 244         .center_freq = (_freq), \
 245         .hw_value = (_freq), \
 246         .max_power = 20, \
 247 }
 248
 249 #define CHAN5G(_freq) { \
 250         .band = IEEE80211_BAND_5GHZ, \
 251         .center_freq = (_freq), \
 252         .hw_value = (_freq), \
 253         .max_power = 20, \
 254 }
 255
 256 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 257         CHAN2G(2412), /* Channel 1 */
 258         CHAN2G(2417), /* Channel 2 */
 259         CHAN2G(2422), /* Channel 3 */
 260         CHAN2G(2427), /* Channel 4 */
 261         CHAN2G(2432), /* Channel 5 */
 262         CHAN2G(2437), /* Channel 6 */
 263         CHAN2G(2442), /* Channel 7 */
 264         CHAN2G(2447), /* Channel 8 */
 265         CHAN2G(2452), /* Channel 9 */
 266         CHAN2G(2457), /* Channel 10 */
 267         CHAN2G(2462), /* Channel 11 */
 268         CHAN2G(2467), /* Channel 12 */
 269         CHAN2G(2472), /* Channel 13 */
 270         CHAN2G(2484), /* Channel 14 */
 271 };
 272
 273 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 274         CHAN5G(5180), /* Channel 36 */
 275         CHAN5G(5200), /* Channel 40 */
 276         CHAN5G(5220), /* Channel 44 */
 277         CHAN5G(5240), /* Channel 48 */
 278
 279         CHAN5G(5260), /* Channel 52 */
 280         CHAN5G(5280), /* Channel 56 */
 281         CHAN5G(5300), /* Channel 60 */
 282         CHAN5G(5320), /* Channel 64 */
 283
 284         CHAN5G(5500), /* Channel 100 */
 285         CHAN5G(5520), /* Channel 104 */
 286         CHAN5G(5540), /* Channel 108 */
 287         CHAN5G(5560), /* Channel 112 */
 288         CHAN5G(5580), /* Channel 116 */
 289         CHAN5G(5600), /* Channel 120 */
 290         CHAN5G(5620), /* Channel 124 */
 291         CHAN5G(5640), /* Channel 128 */
 292         CHAN5G(5660), /* Channel 132 */
 293         CHAN5G(5680), /* Channel 136 */
 294         CHAN5G(5700), /* Channel 140 */
 295
 296         CHAN5G(5745), /* Channel 149 */
 297         CHAN5G(5765), /* Channel 153 */
 298         CHAN5G(5785), /* Channel 157 */
 299         CHAN5G(5805), /* Channel 161 */
 300         CHAN5G(5825), /* Channel 165 */
 301 };
 302
 303 static const struct ieee80211_rate hwsim_rates[] = {
 304         { .bitrate = 10 },
 305         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 306         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 307         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 308         { .bitrate = 60 },
 309         { .bitrate = 90 },
 310         { .bitrate = 120 },
 311         { .bitrate = 180 },
 312         { .bitrate = 240 },
 313         { .bitrate = 360 },
 314         { .bitrate = 480 },
 315         { .bitrate = 540 }
 316 };
 317
 318 static spinlock_t hwsim_radio_lock;
 319 static struct list_head hwsim_radios;
 320
 321 struct mac80211_hwsim_data {
 322         struct list_head list;
 323         struct ieee80211_hw *hw;
 324         struct device *dev;
 325         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 326         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 327         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 328         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 329
 330         struct mac_address addresses[2];
 331
 332         struct ieee80211_channel *tmp_chan;
 333         struct delayed_work roc_done;
 334         struct delayed_work hw_scan;
 335         struct cfg80211_scan_request *hw_scan_request;
 336         struct ieee80211_vif *hw_scan_vif;
 337         int scan_chan_idx;
 338
 339         struct ieee80211_channel *channel;
 340         unsigned long beacon_int; /* in jiffies unit */
 341         unsigned int rx_filter;
 342         bool started, idle, scanning;
 343         struct mutex mutex;
 344         struct timer_list beacon_timer;
 345         enum ps_mode {
 346                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 347         } ps;
 348         bool ps_poll_pending;
 349         struct dentry *debugfs;
 350         struct dentry *debugfs_ps;
 351
 352         struct sk_buff_head pending;    /* packets pending */
 353         /*
 354          * Only radios in the same group can communicate together (the
 355          * channel has to match too). Each bit represents a group. A
 356          * radio can be in more then one group.
 357          */
 358         u64 group;
 359         struct dentry *debugfs_group;
 360
 361         int power_level;
 362
 363         /* difference between this hw's clock and the real clock, in usecs */
 364         s64 tsf_offset;
 365 };
 366
 367
 368 struct hwsim_radiotap_hdr {
 369         struct ieee80211_radiotap_header hdr;
 370         __le64 rt_tsft;
 371         u8 rt_flags;
 372         u8 rt_rate;
 373         __le16 rt_channel;
 374         __le16 rt_chbitmask;
 375 } __packed;
 376
 377 /* MAC80211_HWSIM netlinf family */
 378 static struct genl_family hwsim_genl_family = {
 379         .id = GENL_ID_GENERATE,
 380         .hdrsize = 0,
 381         .name = "MAC80211_HWSIM",
 382         .version = 1,
 383         .maxattr = HWSIM_ATTR_MAX,
 384 };
 385
 386 /* MAC80211_HWSIM netlink policy */
 387
 388 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 389         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 390                                        .len = 6*sizeof(u8) },
 391         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 392                                           .len = 6*sizeof(u8) },
 393         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 394                                .len = IEEE80211_MAX_DATA_LEN },
 395         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 396         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 397         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 398         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 399                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 400                                         struct hwsim_tx_rate)},
 401         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 402 };
 403
 404 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 405                                         struct net_device *dev)
 406 {
 407         /* TODO: allow packet injection */
 408         dev_kfree_skb(skb);
 409         return NETDEV_TX_OK;
 410 }
 411
 412 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 413 {
 414         struct timeval tv = ktime_to_timeval(ktime_get_real());
 415         u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
 416         return cpu_to_le64(now + data->tsf_offset);
 417 }
 418
 419 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 420                 struct ieee80211_vif *vif)
 421 {
 422         struct mac80211_hwsim_data *data = hw->priv;
 423         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 424 }
 425
 426 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 427                 struct ieee80211_vif *vif, u64 tsf)
 428 {
 429         struct mac80211_hwsim_data *data = hw->priv;
 430         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 431         s64 delta = tsf - now;
 432
 433         data->tsf_offset += delta;
 434 }
 435
 436 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 437                                       struct sk_buff *tx_skb,
 438                                       struct ieee80211_channel *chan)
 439 {
 440         struct mac80211_hwsim_data *data = hw->priv;
 441         struct sk_buff *skb;
 442         struct hwsim_radiotap_hdr *hdr;
 443         u16 flags;
 444         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 445         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 446
 447         if (!netif_running(hwsim_mon))
 448                 return;
 449
 450         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 451         if (skb == NULL)
 452                 return;
 453
 454         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 455         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 456         hdr->hdr.it_pad = 0;
 457         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 458         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 459                                           (1 << IEEE80211_RADIOTAP_RATE) |
 460                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 461                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 462         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 463         hdr->rt_flags = 0;
 464         hdr->rt_rate = txrate->bitrate / 5;
 465         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 466         flags = IEEE80211_CHAN_2GHZ;
 467         if (txrate->flags & IEEE80211_RATE_ERP_G)
 468                 flags |= IEEE80211_CHAN_OFDM;
 469         else
 470                 flags |= IEEE80211_CHAN_CCK;
 471         hdr->rt_chbitmask = cpu_to_le16(flags);
 472
 473         skb->dev = hwsim_mon;
 474         skb_set_mac_header(skb, 0);
 475         skb->ip_summed = CHECKSUM_UNNECESSARY;
 476         skb->pkt_type = PACKET_OTHERHOST;
 477         skb->protocol = htons(ETH_P_802_2);
 478         memset(skb->cb, 0, sizeof(skb->cb));
 479         netif_rx(skb);
 480 }
 481
 482
 483 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 484                                        const u8 *addr)
 485 {
 486         struct sk_buff *skb;
 487         struct hwsim_radiotap_hdr *hdr;
 488         u16 flags;
 489         struct ieee80211_hdr *hdr11;
 490
 491         if (!netif_running(hwsim_mon))
 492                 return;
 493
 494         skb = dev_alloc_skb(100);
 495         if (skb == NULL)
 496                 return;
 497
 498         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 499         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 500         hdr->hdr.it_pad = 0;
 501         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 502         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 503                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 504         hdr->rt_flags = 0;
 505         hdr->rt_rate = 0;
 506         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 507         flags = IEEE80211_CHAN_2GHZ;
 508         hdr->rt_chbitmask = cpu_to_le16(flags);
 509
 510         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 511         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 512                                            IEEE80211_STYPE_ACK);
 513         hdr11->duration_id = cpu_to_le16(0);
 514         memcpy(hdr11->addr1, addr, ETH_ALEN);
 515
 516         skb->dev = hwsim_mon;
 517         skb_set_mac_header(skb, 0);
 518         skb->ip_summed = CHECKSUM_UNNECESSARY;
 519         skb->pkt_type = PACKET_OTHERHOST;
 520         skb->protocol = htons(ETH_P_802_2);
 521         memset(skb->cb, 0, sizeof(skb->cb));
 522         netif_rx(skb);
 523 }
 524
 525
 526 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 527                            struct sk_buff *skb)
 528 {
 529         switch (data->ps) {
 530         case PS_DISABLED:
 531                 return true;
 532         case PS_ENABLED:
 533                 return false;
 534         case PS_AUTO_POLL:
 535                 /* TODO: accept (some) Beacons by default and other frames only
 536                  * if pending PS-Poll has been sent */
 537                 return true;
 538         case PS_MANUAL_POLL:
 539                 /* Allow unicast frames to own address if there is a pending
 540                  * PS-Poll */
 541                 if (data->ps_poll_pending &&
 542                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 543                            ETH_ALEN) == 0) {
 544                         data->ps_poll_pending = false;
 545                         return true;
 546                 }
 547                 return false;
 548         }
 549
 550         return true;
 551 }
 552
 553
 554 struct mac80211_hwsim_addr_match_data {
 555         bool ret;
 556         const u8 *addr;
 557 };
 558
 559 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 560                                      struct ieee80211_vif *vif)
 561 {
 562         struct mac80211_hwsim_addr_match_data *md = data;
 563         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 564                 md->ret = true;
 565 }
 566
 567
 568 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 569                                       const u8 *addr)
 570 {
 571         struct mac80211_hwsim_addr_match_data md;
 572
 573         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 574                 return true;
 575
 576         md.ret = false;
 577         md.addr = addr;
 578         ieee80211_iterate_active_interfaces_atomic(data->hw,
 579                                                    IEEE80211_IFACE_ITER_NORMAL,
 580                                                    mac80211_hwsim_addr_iter,
 581                                                    &md);
 582
 583         return md.ret;
 584 }
 585
 586 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 587                                        struct sk_buff *my_skb,
 588                                        int dst_portid)
 589 {
 590         struct sk_buff *skb;
 591         struct mac80211_hwsim_data *data = hw->priv;
 592         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 593         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 594         void *msg_head;
 595         unsigned int hwsim_flags = 0;
 596         int i;
 597         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 598
 599         if (data->ps != PS_DISABLED)
 600                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 601         /* If the queue contains MAX_QUEUE skb's drop some */
 602         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 603                 /* Droping until WARN_QUEUE level */
 604                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 605                         skb_dequeue(&data->pending);
 606         }
 607
 608         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 609         if (skb == NULL)
 610                 goto nla_put_failure;
 611
 612         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 613                                HWSIM_CMD_FRAME);
 614         if (msg_head == NULL) {
 615                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 616                 goto nla_put_failure;
 617         }
 618
 619         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 620                     sizeof(struct mac_address), data->addresses[1].addr))
 621                 goto nla_put_failure;
 622
 623         /* We get the skb->data */
 624         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 625                 goto nla_put_failure;
 626
 627         /* We get the flags for this transmission, and we translate them to
 628            wmediumd flags  */
 629
 630         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 631                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 632
 633         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 634                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 635
 636         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 637                 goto nla_put_failure;
 638
 639         /* We get the tx control (rate and retries) info*/
 640
 641         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 642                 tx_attempts[i].idx = info->status.rates[i].idx;
 643                 tx_attempts[i].count = info->status.rates[i].count;
 644         }
 645
 646         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 647                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 648                     tx_attempts))
 649                 goto nla_put_failure;
 650
 651         /* We create a cookie to identify this skb */
 652         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 653                 goto nla_put_failure;
 654
 655         genlmsg_end(skb, msg_head);
 656         genlmsg_unicast(&init_net, skb, dst_portid);
 657
 658         /* Enqueue the packet */
 659         skb_queue_tail(&data->pending, my_skb);
 660         return;
 661
 662 nla_put_failure:
 663         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 664 }
 665
 666 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 667                                struct ieee80211_channel *c2)
 668 {
 669         if (!c1 || !c2)
 670                 return false;
 671
 672         return c1->center_freq == c2->center_freq;
 673 }
 674
 675 struct tx_iter_data {
 676         struct ieee80211_channel *channel;
 677         bool receive;
 678 };
 679
 680 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 681                                    struct ieee80211_vif *vif)
 682 {
 683         struct tx_iter_data *data = _data;
 684
 685         if (!vif->chanctx_conf)
 686                 return;
 687
 688         if (!hwsim_chans_compat(data->channel,
 689                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 690                 return;
 691
 692         data->receive = true;
 693 }
 694
 695 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 696                                           struct sk_buff *skb,
 697                                           struct ieee80211_channel *chan)
 698 {
 699         struct mac80211_hwsim_data *data = hw->priv, *data2;
 700         bool ack = false;
 701         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 702         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 703         struct ieee80211_rx_status rx_status;
 704         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 705
 706         memset(&rx_status, 0, sizeof(rx_status));
 707         rx_status.flag |= RX_FLAG_MACTIME_START;
 708         rx_status.freq = chan->center_freq;
 709         rx_status.band = chan->band;
 710         rx_status.rate_idx = info->control.rates[0].idx;
 711         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 712                 rx_status.flag |= RX_FLAG_HT;
 713         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 714                 rx_status.flag |= RX_FLAG_40MHZ;
 715         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 716                 rx_status.flag |= RX_FLAG_SHORT_GI;
 717         /* TODO: simulate real signal strength (and optional packet loss) */
 718         rx_status.signal = data->power_level - 50;
 719
 720         if (data->ps != PS_DISABLED)
 721                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 722
 723         /* release the skb's source info */
 724         skb_orphan(skb);
 725         skb_dst_drop(skb);
 726         skb->mark = 0;
 727         secpath_reset(skb);
 728         nf_reset(skb);
 729
 730         /* Copy skb to all enabled radios that are on the current frequency */
 731         spin_lock(&hwsim_radio_lock);
 732         list_for_each_entry(data2, &hwsim_radios, list) {
 733                 struct sk_buff *nskb;
 734                 struct ieee80211_mgmt *mgmt;
 735                 struct tx_iter_data tx_iter_data = {
 736                         .receive = false,
 737                         .channel = chan,
 738                 };
 739
 740                 if (data == data2)
 741                         continue;
 742
 743                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 744                     !hwsim_ps_rx_ok(data2, skb))
 745                         continue;
 746
 747                 if (!(data->group & data2->group))
 748                         continue;
 749
 750                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 751                     !hwsim_chans_compat(chan, data2->channel)) {
 752                         ieee80211_iterate_active_interfaces_atomic(
 753                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 754                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 755                         if (!tx_iter_data.receive)
 756                                 continue;
 757                 }
 758
 759                 /*
 760                  * reserve some space for our vendor and the normal
 761                  * radiotap header, since we're copying anyway
 762                  */
 763                 if (skb->len < PAGE_SIZE && paged_rx) {
 764                         struct page *page = alloc_page(GFP_ATOMIC);
 765
 766                         if (!page)
 767                                 continue;
 768
 769                         nskb = dev_alloc_skb(128);
 770                         if (!nskb) {
 771                                 __free_page(page);
 772                                 continue;
 773                         }
 774
 775                         memcpy(page_address(page), skb->data, skb->len);
 776                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 777                 } else {
 778                         nskb = skb_copy(skb, GFP_ATOMIC);
 779                         if (!nskb)
 780                                 continue;
 781                 }
 782
 783                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 784                         ack = true;
 785
 786                 /* set bcn timestamp relative to receiver mactime */
 787                 rx_status.mactime =
 788                                 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
 789                 mgmt = (struct ieee80211_mgmt *) nskb->data;
 790                 if (ieee80211_is_beacon(mgmt->frame_control) ||
 791                     ieee80211_is_probe_resp(mgmt->frame_control))
 792                         mgmt->u.beacon.timestamp = cpu_to_le64(
 793                                 rx_status.mactime +
 794                                 (data->tsf_offset - data2->tsf_offset) +
 795                                 24 * 8 * 10 / txrate->bitrate);
 796
 797 #if 0
 798                 /*
 799                  * Don't enable this code by default as the OUI 00:00:00
 800                  * is registered to Xerox so we shouldn't use it here, it
 801                  * might find its way into pcap files.
 802                  * Note that this code requires the headroom in the SKB
 803                  * that was allocated earlier.
 804                  */
 805                 rx_status.vendor_radiotap_oui[0] = 0x00;
 806                 rx_status.vendor_radiotap_oui[1] = 0x00;
 807                 rx_status.vendor_radiotap_oui[2] = 0x00;
 808                 rx_status.vendor_radiotap_subns = 127;
 809                 /*
 810                  * Radiotap vendor namespaces can (and should) also be
 811                  * split into fields by using the standard radiotap
 812                  * presence bitmap mechanism. Use just BIT(0) here for
 813                  * the presence bitmap.
 814                  */
 815                 rx_status.vendor_radiotap_bitmap = BIT(0);
 816                 /* We have 8 bytes of (dummy) data */
 817                 rx_status.vendor_radiotap_len = 8;
 818                 /* For testing, also require it to be aligned */
 819                 rx_status.vendor_radiotap_align = 8;
 820                 /* push the data */
 821                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 822 #endif
 823
 824                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 825                 ieee80211_rx_irqsafe(data2->hw, nskb);
 826         }
 827         spin_unlock(&hwsim_radio_lock);
 828
 829         return ack;
 830 }
 831
 832 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 833                               struct ieee80211_tx_control *control,
 834                               struct sk_buff *skb)
 835 {
 836         struct mac80211_hwsim_data *data = hw->priv;
 837         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 838         struct ieee80211_chanctx_conf *chanctx_conf;
 839         struct ieee80211_channel *channel;
 840         bool ack;
 841         u32 _portid;
 842
 843         if (WARN_ON(skb->len < 10)) {
 844                 /* Should not happen; just a sanity check for addr1 use */
 845                 dev_kfree_skb(skb);
 846                 return;
 847         }
 848
 849         if (channels == 1) {
 850                 channel = data->channel;
 851         } else if (txi->hw_queue == 4) {
 852                 channel = data->tmp_chan;
 853         } else {
 854                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 855                 if (chanctx_conf)
 856                         channel = chanctx_conf->def.chan;
 857                 else
 858                         channel = NULL;
 859         }
 860
 861         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 862                 dev_kfree_skb(skb);
 863                 return;
 864         }
 865
 866         if (data->idle && !data->tmp_chan) {
 867                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 868                 dev_kfree_skb(skb);
 869                 return;
 870         }
 871
 872         if (txi->control.vif)
 873                 hwsim_check_magic(txi->control.vif);
 874         if (control->sta)
 875                 hwsim_check_sta_magic(control->sta);
 876
 877         txi->rate_driver_data[0] = channel;
 878
 879         mac80211_hwsim_monitor_rx(hw, skb, channel);
 880
 881         /* wmediumd mode check */
 882         _portid = ACCESS_ONCE(wmediumd_portid);
 883
 884         if (_portid)
 885                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 886
 887         /* NO wmediumd detected, perfect medium simulation */
 888         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 889
 890         if (ack && skb->len >= 16) {
 891                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 892                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 893         }
 894
 895         ieee80211_tx_info_clear_status(txi);
 896
 897         /* frame was transmitted at most favorable rate at first attempt */
 898         txi->control.rates[0].count = 1;
 899         txi->control.rates[1].idx = -1;
 900
 901         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 902                 txi->flags |= IEEE80211_TX_STAT_ACK;
 903         ieee80211_tx_status_irqsafe(hw, skb);
 904 }
 905
 906
 907 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 908 {
 909         struct mac80211_hwsim_data *data = hw->priv;
 910         wiphy_debug(hw->wiphy, "%s\n", __func__);
 911         data->started = true;
 912         return 0;
 913 }
 914
 915
 916 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 917 {
 918         struct mac80211_hwsim_data *data = hw->priv;
 919         data->started = false;
 920         del_timer(&data->beacon_timer);
 921         wiphy_debug(hw->wiphy, "%s\n", __func__);
 922 }
 923
 924
 925 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 926                                         struct ieee80211_vif *vif)
 927 {
 928         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 929                     __func__, ieee80211_vif_type_p2p(vif),
 930                     vif->addr);
 931         hwsim_set_magic(vif);
 932
 933         vif->cab_queue = 0;
 934         vif->hw_queue[IEEE80211_AC_VO] = 0;
 935         vif->hw_queue[IEEE80211_AC_VI] = 1;
 936         vif->hw_queue[IEEE80211_AC_BE] = 2;
 937         vif->hw_queue[IEEE80211_AC_BK] = 3;
 938
 939         return 0;
 940 }
 941
 942
 943 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 944                                            struct ieee80211_vif *vif,
 945                                            enum nl80211_iftype newtype,
 946                                            bool newp2p)
 947 {
 948         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 949         wiphy_debug(hw->wiphy,
 950                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 951                     __func__, ieee80211_vif_type_p2p(vif),
 952                     newtype, vif->addr);
 953         hwsim_check_magic(vif);
 954
 955         return 0;
 956 }
 957
 958 static void mac80211_hwsim_remove_interface(
 959         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 960 {
 961         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 962                     __func__, ieee80211_vif_type_p2p(vif),
 963                     vif->addr);
 964         hwsim_check_magic(vif);
 965         hwsim_clear_magic(vif);
 966 }
 967
 968 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 969                                     struct sk_buff *skb,
 970                                     struct ieee80211_channel *chan)
 971 {
 972         u32 _pid = ACCESS_ONCE(wmediumd_portid);
 973
 974         mac80211_hwsim_monitor_rx(hw, skb, chan);
 975
 976         if (_pid)
 977                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 978
 979         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
 980         dev_kfree_skb(skb);
 981 }
 982
 983 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 984                                      struct ieee80211_vif *vif)
 985 {
 986         struct ieee80211_hw *hw = arg;
 987         struct sk_buff *skb;
 988
 989         hwsim_check_magic(vif);
 990
 991         if (vif->type != NL80211_IFTYPE_AP &&
 992             vif->type != NL80211_IFTYPE_MESH_POINT &&
 993             vif->type != NL80211_IFTYPE_ADHOC)
 994                 return;
 995
 996         skb = ieee80211_beacon_get(hw, vif);
 997         if (skb == NULL)
 998                 return;
 999
1000         mac80211_hwsim_tx_frame(hw, skb,
1001                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1002 }
1003
1004
1005 static void mac80211_hwsim_beacon(unsigned long arg)
1006 {
1007         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
1008         struct mac80211_hwsim_data *data = hw->priv;
1009
1010         if (!data->started)
1011                 return;
1012
1013         ieee80211_iterate_active_interfaces_atomic(
1014                 hw, IEEE80211_IFACE_ITER_NORMAL,
1015                 mac80211_hwsim_beacon_tx, hw);
1016
1017         data->beacon_timer.expires = jiffies + data->beacon_int;
1018         add_timer(&data->beacon_timer);
1019 }
1020
1021 static const char *hwsim_chantypes[] = {
1022         [NL80211_CHAN_NO_HT] = "noht",
1023         [NL80211_CHAN_HT20] = "ht20",
1024         [NL80211_CHAN_HT40MINUS] = "ht40-",
1025         [NL80211_CHAN_HT40PLUS] = "ht40+",
1026 };
1027
1028 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1029 {
1030         struct mac80211_hwsim_data *data = hw->priv;
1031         struct ieee80211_conf *conf = &hw->conf;
1032         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1033                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1034                 [IEEE80211_SMPS_OFF] = "off",
1035                 [IEEE80211_SMPS_STATIC] = "static",
1036                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1037         };
1038
1039         wiphy_debug(hw->wiphy,
1040                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
1041                     __func__,
1042                     conf->channel ? conf->channel->center_freq : 0,
1043                     hwsim_chantypes[conf->channel_type],
1044                     !!(conf->flags & IEEE80211_CONF_IDLE),
1045                     !!(conf->flags & IEEE80211_CONF_PS),
1046                     smps_modes[conf->smps_mode]);
1047
1048         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1049
1050         data->channel = conf->channel;
1051
1052         WARN_ON(data->channel && channels > 1);
1053
1054         data->power_level = conf->power_level;
1055         if (!data->started || !data->beacon_int)
1056                 del_timer(&data->beacon_timer);
1057         else
1058                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
1059
1060         return 0;
1061 }
1062
1063
1064 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1065                                             unsigned int changed_flags,
1066                                             unsigned int *total_flags,u64 multicast)
1067 {
1068         struct mac80211_hwsim_data *data = hw->priv;
1069
1070         wiphy_debug(hw->wiphy, "%s\n", __func__);
1071
1072         data->rx_filter = 0;
1073         if (*total_flags & FIF_PROMISC_IN_BSS)
1074                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1075         if (*total_flags & FIF_ALLMULTI)
1076                 data->rx_filter |= FIF_ALLMULTI;
1077
1078         *total_flags = data->rx_filter;
1079 }
1080
1081 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1082                                             struct ieee80211_vif *vif,
1083                                             struct ieee80211_bss_conf *info,
1084                                             u32 changed)
1085 {
1086         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1087         struct mac80211_hwsim_data *data = hw->priv;
1088
1089         hwsim_check_magic(vif);
1090
1091         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
1092
1093         if (changed & BSS_CHANGED_BSSID) {
1094                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1095                             __func__, info->bssid);
1096                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1097         }
1098
1099         if (changed & BSS_CHANGED_ASSOC) {
1100                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1101                             info->assoc, info->aid);
1102                 vp->assoc = info->assoc;
1103                 vp->aid = info->aid;
1104         }
1105
1106         if (changed & BSS_CHANGED_BEACON_INT) {
1107                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1108                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
1109                 if (WARN_ON(!data->beacon_int))
1110                         data->beacon_int = 1;
1111                 if (data->started)
1112                         mod_timer(&data->beacon_timer,
1113                                   jiffies + data->beacon_int);
1114         }
1115
1116         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1117                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1118                             info->use_cts_prot);
1119         }
1120
1121         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1122                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1123                             info->use_short_preamble);
1124         }
1125
1126         if (changed & BSS_CHANGED_ERP_SLOT) {
1127                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1128         }
1129
1130         if (changed & BSS_CHANGED_HT) {
1131                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1132                             info->ht_operation_mode);
1133         }
1134
1135         if (changed & BSS_CHANGED_BASIC_RATES) {
1136                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1137                             (unsigned long long) info->basic_rates);
1138         }
1139
1140         if (changed & BSS_CHANGED_TXPOWER)
1141                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1142 }
1143
1144 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1145                                   struct ieee80211_vif *vif,
1146                                   struct ieee80211_sta *sta)
1147 {
1148         hwsim_check_magic(vif);
1149         hwsim_set_sta_magic(sta);
1150
1151         return 0;
1152 }
1153
1154 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1155                                      struct ieee80211_vif *vif,
1156                                      struct ieee80211_sta *sta)
1157 {
1158         hwsim_check_magic(vif);
1159         hwsim_clear_sta_magic(sta);
1160
1161         return 0;
1162 }
1163
1164 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1165                                       struct ieee80211_vif *vif,
1166                                       enum sta_notify_cmd cmd,
1167                                       struct ieee80211_sta *sta)
1168 {
1169         hwsim_check_magic(vif);
1170
1171         switch (cmd) {
1172         case STA_NOTIFY_SLEEP:
1173         case STA_NOTIFY_AWAKE:
1174                 /* TODO: make good use of these flags */
1175                 break;
1176         default:
1177                 WARN(1, "Invalid sta notify: %d\n", cmd);
1178                 break;
1179         }
1180 }
1181
1182 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1183                                   struct ieee80211_sta *sta,
1184                                   bool set)
1185 {
1186         hwsim_check_sta_magic(sta);
1187         return 0;
1188 }
1189
1190 static int mac80211_hwsim_conf_tx(
1191         struct ieee80211_hw *hw,
1192         struct ieee80211_vif *vif, u16 queue,
1193         const struct ieee80211_tx_queue_params *params)
1194 {
1195         wiphy_debug(hw->wiphy,
1196                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1197                     __func__, queue,
1198                     params->txop, params->cw_min,
1199                     params->cw_max, params->aifs);
1200         return 0;
1201 }
1202
1203 static int mac80211_hwsim_get_survey(
1204         struct ieee80211_hw *hw, int idx,
1205         struct survey_info *survey)
1206 {
1207         struct ieee80211_conf *conf = &hw->conf;
1208
1209         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1210
1211         if (idx != 0)
1212                 return -ENOENT;
1213
1214         /* Current channel */
1215         survey->channel = conf->channel;
1216
1217         /*
1218          * Magically conjured noise level --- this is only ok for simulated hardware.
1219          *
1220          * A real driver which cannot determine the real channel noise MUST NOT
1221          * report any noise, especially not a magically conjured one :-)
1222          */
1223         survey->filled = SURVEY_INFO_NOISE_DBM;
1224         survey->noise = -92;
1225
1226         return 0;
1227 }
1228
1229 #ifdef CONFIG_NL80211_TESTMODE
1230 /*
1231  * This section contains example code for using netlink
1232  * attributes with the testmode command in nl80211.
1233  */
1234
1235 /* These enums need to be kept in sync with userspace */
1236 enum hwsim_testmode_attr {
1237         __HWSIM_TM_ATTR_INVALID = 0,
1238         HWSIM_TM_ATTR_CMD       = 1,
1239         HWSIM_TM_ATTR_PS        = 2,
1240
1241         /* keep last */
1242         __HWSIM_TM_ATTR_AFTER_LAST,
1243         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1244 };
1245
1246 enum hwsim_testmode_cmd {
1247         HWSIM_TM_CMD_SET_PS             = 0,
1248         HWSIM_TM_CMD_GET_PS             = 1,
1249         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1250         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1251 };
1252
1253 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1254         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1255         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1256 };
1257
1258 static int hwsim_fops_ps_write(void *dat, u64 val);
1259
1260 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1261                                        void *data, int len)
1262 {
1263         struct mac80211_hwsim_data *hwsim = hw->priv;
1264         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1265         struct sk_buff *skb;
1266         int err, ps;
1267
1268         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1269                         hwsim_testmode_policy);
1270         if (err)
1271                 return err;
1272
1273         if (!tb[HWSIM_TM_ATTR_CMD])
1274                 return -EINVAL;
1275
1276         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1277         case HWSIM_TM_CMD_SET_PS:
1278                 if (!tb[HWSIM_TM_ATTR_PS])
1279                         return -EINVAL;
1280                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1281                 return hwsim_fops_ps_write(hwsim, ps);
1282         case HWSIM_TM_CMD_GET_PS:
1283                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1284                                                 nla_total_size(sizeof(u32)));
1285                 if (!skb)
1286                         return -ENOMEM;
1287                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1288                         goto nla_put_failure;
1289                 return cfg80211_testmode_reply(skb);
1290         case HWSIM_TM_CMD_STOP_QUEUES:
1291                 ieee80211_stop_queues(hw);
1292                 return 0;
1293         case HWSIM_TM_CMD_WAKE_QUEUES:
1294                 ieee80211_wake_queues(hw);
1295                 return 0;
1296         default:
1297                 return -EOPNOTSUPP;
1298         }
1299
1300  nla_put_failure:
1301         kfree_skb(skb);
1302         return -ENOBUFS;
1303 }
1304 #endif
1305
1306 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1307                                        struct ieee80211_vif *vif,
1308                                        enum ieee80211_ampdu_mlme_action action,
1309                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1310                                        u8 buf_size)
1311 {
1312         switch (action) {
1313         case IEEE80211_AMPDU_TX_START:
1314                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1315                 break;
1316         case IEEE80211_AMPDU_TX_STOP_CONT:
1317         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1318         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1319                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1320                 break;
1321         case IEEE80211_AMPDU_TX_OPERATIONAL:
1322                 break;
1323         case IEEE80211_AMPDU_RX_START:
1324         case IEEE80211_AMPDU_RX_STOP:
1325                 break;
1326         default:
1327                 return -EOPNOTSUPP;
1328         }
1329
1330         return 0;
1331 }
1332
1333 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1334 {
1335         /* Not implemented, queues only on kernel side */
1336 }
1337
1338 static void hw_scan_work(struct work_struct *work)
1339 {
1340         struct mac80211_hwsim_data *hwsim =
1341                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1342         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1343         int dwell, i;
1344
1345         mutex_lock(&hwsim->mutex);
1346         if (hwsim->scan_chan_idx >= req->n_channels) {
1347                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1348                 ieee80211_scan_completed(hwsim->hw, false);
1349                 hwsim->hw_scan_request = NULL;
1350                 hwsim->hw_scan_vif = NULL;
1351                 hwsim->tmp_chan = NULL;
1352                 mutex_unlock(&hwsim->mutex);
1353                 return;
1354         }
1355
1356         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1357                     req->channels[hwsim->scan_chan_idx]->center_freq);
1358
1359         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1360         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
1361             !req->n_ssids) {
1362                 dwell = 120;
1363         } else {
1364                 dwell = 30;
1365                 /* send probes */
1366                 for (i = 0; i < req->n_ssids; i++) {
1367                         struct sk_buff *probe;
1368
1369                         probe = ieee80211_probereq_get(hwsim->hw,
1370                                                        hwsim->hw_scan_vif,
1371                                                        req->ssids[i].ssid,
1372                                                        req->ssids[i].ssid_len,
1373                                                        req->ie_len);
1374                         if (!probe)
1375                                 continue;
1376
1377                         if (req->ie_len)
1378                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1379                                        req->ie_len);
1380
1381                         local_bh_disable();
1382                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1383                                                 hwsim->tmp_chan);
1384                         local_bh_enable();
1385                 }
1386         }
1387         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1388                                      msecs_to_jiffies(dwell));
1389         hwsim->scan_chan_idx++;
1390         mutex_unlock(&hwsim->mutex);
1391 }
1392
1393 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1394                                   struct ieee80211_vif *vif,
1395                                   struct cfg80211_scan_request *req)
1396 {
1397         struct mac80211_hwsim_data *hwsim = hw->priv;
1398
1399         mutex_lock(&hwsim->mutex);
1400         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1401                 mutex_unlock(&hwsim->mutex);
1402                 return -EBUSY;
1403         }
1404         hwsim->hw_scan_request = req;
1405         hwsim->hw_scan_vif = vif;
1406         hwsim->scan_chan_idx = 0;
1407         mutex_unlock(&hwsim->mutex);
1408
1409         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1410
1411         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1412
1413         return 0;
1414 }
1415
1416 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1417                                           struct ieee80211_vif *vif)
1418 {
1419         struct mac80211_hwsim_data *hwsim = hw->priv;
1420
1421         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1422
1423         cancel_delayed_work_sync(&hwsim->hw_scan);
1424
1425         mutex_lock(&hwsim->mutex);
1426         ieee80211_scan_completed(hwsim->hw, true);
1427         hwsim->tmp_chan = NULL;
1428         hwsim->hw_scan_request = NULL;
1429         hwsim->hw_scan_vif = NULL;
1430         mutex_unlock(&hwsim->mutex);
1431 }
1432
1433 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1434 {
1435         struct mac80211_hwsim_data *hwsim = hw->priv;
1436
1437         mutex_lock(&hwsim->mutex);
1438
1439         if (hwsim->scanning) {
1440                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1441                 goto out;
1442         }
1443
1444         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1445         hwsim->scanning = true;
1446
1447 out:
1448         mutex_unlock(&hwsim->mutex);
1449 }
1450
1451 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1452 {
1453         struct mac80211_hwsim_data *hwsim = hw->priv;
1454
1455         mutex_lock(&hwsim->mutex);
1456
1457         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1458         hwsim->scanning = false;
1459
1460         mutex_unlock(&hwsim->mutex);
1461 }
1462
1463 static void hw_roc_done(struct work_struct *work)
1464 {
1465         struct mac80211_hwsim_data *hwsim =
1466                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1467
1468         mutex_lock(&hwsim->mutex);
1469         ieee80211_remain_on_channel_expired(hwsim->hw);
1470         hwsim->tmp_chan = NULL;
1471         mutex_unlock(&hwsim->mutex);
1472
1473         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1474 }
1475
1476 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1477                               struct ieee80211_vif *vif,
1478                               struct ieee80211_channel *chan,
1479                               int duration)
1480 {
1481         struct mac80211_hwsim_data *hwsim = hw->priv;
1482
1483         mutex_lock(&hwsim->mutex);
1484         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1485                 mutex_unlock(&hwsim->mutex);
1486                 return -EBUSY;
1487         }
1488
1489         hwsim->tmp_chan = chan;
1490         mutex_unlock(&hwsim->mutex);
1491
1492         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1493                     chan->center_freq, duration);
1494
1495         ieee80211_ready_on_channel(hw);
1496
1497         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1498                                      msecs_to_jiffies(duration));
1499         return 0;
1500 }
1501
1502 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1503 {
1504         struct mac80211_hwsim_data *hwsim = hw->priv;
1505
1506         cancel_delayed_work_sync(&hwsim->roc_done);
1507
1508         mutex_lock(&hwsim->mutex);
1509         hwsim->tmp_chan = NULL;
1510         mutex_unlock(&hwsim->mutex);
1511
1512         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1513
1514         return 0;
1515 }
1516
1517 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1518                                       struct ieee80211_chanctx_conf *ctx)
1519 {
1520         hwsim_set_chanctx_magic(ctx);
1521         wiphy_debug(hw->wiphy,
1522                     "add 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         return 0;
1526 }
1527
1528 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1529                                           struct ieee80211_chanctx_conf *ctx)
1530 {
1531         wiphy_debug(hw->wiphy,
1532                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1533                     ctx->def.chan->center_freq, ctx->def.width,
1534                     ctx->def.center_freq1, ctx->def.center_freq2);
1535         hwsim_check_chanctx_magic(ctx);
1536         hwsim_clear_chanctx_magic(ctx);
1537 }
1538
1539 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1540                                           struct ieee80211_chanctx_conf *ctx,
1541                                           u32 changed)
1542 {
1543         hwsim_check_chanctx_magic(ctx);
1544         wiphy_debug(hw->wiphy,
1545                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1546                     ctx->def.chan->center_freq, ctx->def.width,
1547                     ctx->def.center_freq1, ctx->def.center_freq2);
1548 }
1549
1550 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1551                                              struct ieee80211_vif *vif,
1552                                              struct ieee80211_chanctx_conf *ctx)
1553 {
1554         hwsim_check_magic(vif);
1555         hwsim_check_chanctx_magic(ctx);
1556
1557         return 0;
1558 }
1559
1560 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1561                                                 struct ieee80211_vif *vif,
1562                                                 struct ieee80211_chanctx_conf *ctx)
1563 {
1564         hwsim_check_magic(vif);
1565         hwsim_check_chanctx_magic(ctx);
1566 }
1567
1568 static struct ieee80211_ops mac80211_hwsim_ops =
1569 {
1570         .tx = mac80211_hwsim_tx,
1571         .start = mac80211_hwsim_start,
1572         .stop = mac80211_hwsim_stop,
1573         .add_interface = mac80211_hwsim_add_interface,
1574         .change_interface = mac80211_hwsim_change_interface,
1575         .remove_interface = mac80211_hwsim_remove_interface,
1576         .config = mac80211_hwsim_config,
1577         .configure_filter = mac80211_hwsim_configure_filter,
1578         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1579         .sta_add = mac80211_hwsim_sta_add,
1580         .sta_remove = mac80211_hwsim_sta_remove,
1581         .sta_notify = mac80211_hwsim_sta_notify,
1582         .set_tim = mac80211_hwsim_set_tim,
1583         .conf_tx = mac80211_hwsim_conf_tx,
1584         .get_survey = mac80211_hwsim_get_survey,
1585         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1586         .ampdu_action = mac80211_hwsim_ampdu_action,
1587         .sw_scan_start = mac80211_hwsim_sw_scan,
1588         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1589         .flush = mac80211_hwsim_flush,
1590         .get_tsf = mac80211_hwsim_get_tsf,
1591         .set_tsf = mac80211_hwsim_set_tsf,
1592 };
1593
1594
1595 static void mac80211_hwsim_free(void)
1596 {
1597         struct list_head tmplist, *i, *tmp;
1598         struct mac80211_hwsim_data *data, *tmpdata;
1599
1600         INIT_LIST_HEAD(&tmplist);
1601
1602         spin_lock_bh(&hwsim_radio_lock);
1603         list_for_each_safe(i, tmp, &hwsim_radios)
1604                 list_move(i, &tmplist);
1605         spin_unlock_bh(&hwsim_radio_lock);
1606
1607         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1608                 debugfs_remove(data->debugfs_group);
1609                 debugfs_remove(data->debugfs_ps);
1610                 debugfs_remove(data->debugfs);
1611                 ieee80211_unregister_hw(data->hw);
1612                 device_unregister(data->dev);
1613                 ieee80211_free_hw(data->hw);
1614         }
1615         class_destroy(hwsim_class);
1616 }
1617
1618
1619 static struct device_driver mac80211_hwsim_driver = {
1620         .name = "mac80211_hwsim"
1621 };
1622
1623 static const struct net_device_ops hwsim_netdev_ops = {
1624         .ndo_start_xmit         = hwsim_mon_xmit,
1625         .ndo_change_mtu         = eth_change_mtu,
1626         .ndo_set_mac_address    = eth_mac_addr,
1627         .ndo_validate_addr      = eth_validate_addr,
1628 };
1629
1630 static void hwsim_mon_setup(struct net_device *dev)
1631 {
1632         dev->netdev_ops = &hwsim_netdev_ops;
1633         dev->destructor = free_netdev;
1634         ether_setup(dev);
1635         dev->tx_queue_len = 0;
1636         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1637         memset(dev->dev_addr, 0, ETH_ALEN);
1638         dev->dev_addr[0] = 0x12;
1639 }
1640
1641
1642 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1643 {
1644         struct mac80211_hwsim_data *data = dat;
1645         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1646         struct sk_buff *skb;
1647         struct ieee80211_pspoll *pspoll;
1648
1649         if (!vp->assoc)
1650                 return;
1651
1652         wiphy_debug(data->hw->wiphy,
1653                     "%s: send PS-Poll to %pM for aid %d\n",
1654                     __func__, vp->bssid, vp->aid);
1655
1656         skb = dev_alloc_skb(sizeof(*pspoll));
1657         if (!skb)
1658                 return;
1659         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1660         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1661                                             IEEE80211_STYPE_PSPOLL |
1662                                             IEEE80211_FCTL_PM);
1663         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1664         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1665         memcpy(pspoll->ta, mac, ETH_ALEN);
1666
1667         rcu_read_lock();
1668         mac80211_hwsim_tx_frame(data->hw, skb,
1669                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1670         rcu_read_unlock();
1671 }
1672
1673 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1674                                 struct ieee80211_vif *vif, int ps)
1675 {
1676         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1677         struct sk_buff *skb;
1678         struct ieee80211_hdr *hdr;
1679
1680         if (!vp->assoc)
1681                 return;
1682
1683         wiphy_debug(data->hw->wiphy,
1684                     "%s: send data::nullfunc to %pM ps=%d\n",
1685                     __func__, vp->bssid, ps);
1686
1687         skb = dev_alloc_skb(sizeof(*hdr));
1688         if (!skb)
1689                 return;
1690         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1691         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1692                                          IEEE80211_STYPE_NULLFUNC |
1693                                          (ps ? IEEE80211_FCTL_PM : 0));
1694         hdr->duration_id = cpu_to_le16(0);
1695         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1696         memcpy(hdr->addr2, mac, ETH_ALEN);
1697         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1698
1699         rcu_read_lock();
1700         mac80211_hwsim_tx_frame(data->hw, skb,
1701                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1702         rcu_read_unlock();
1703 }
1704
1705
1706 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1707                                    struct ieee80211_vif *vif)
1708 {
1709         struct mac80211_hwsim_data *data = dat;
1710         hwsim_send_nullfunc(data, mac, vif, 1);
1711 }
1712
1713
1714 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1715                                       struct ieee80211_vif *vif)
1716 {
1717         struct mac80211_hwsim_data *data = dat;
1718         hwsim_send_nullfunc(data, mac, vif, 0);
1719 }
1720
1721
1722 static int hwsim_fops_ps_read(void *dat, u64 *val)
1723 {
1724         struct mac80211_hwsim_data *data = dat;
1725         *val = data->ps;
1726         return 0;
1727 }
1728
1729 static int hwsim_fops_ps_write(void *dat, u64 val)
1730 {
1731         struct mac80211_hwsim_data *data = dat;
1732         enum ps_mode old_ps;
1733
1734         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1735             val != PS_MANUAL_POLL)
1736                 return -EINVAL;
1737
1738         old_ps = data->ps;
1739         data->ps = val;
1740
1741         if (val == PS_MANUAL_POLL) {
1742                 ieee80211_iterate_active_interfaces(data->hw,
1743                                                     IEEE80211_IFACE_ITER_NORMAL,
1744                                                     hwsim_send_ps_poll, data);
1745                 data->ps_poll_pending = true;
1746         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1747                 ieee80211_iterate_active_interfaces(data->hw,
1748                                                     IEEE80211_IFACE_ITER_NORMAL,
1749                                                     hwsim_send_nullfunc_ps,
1750                                                     data);
1751         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1752                 ieee80211_iterate_active_interfaces(data->hw,
1753                                                     IEEE80211_IFACE_ITER_NORMAL,
1754                                                     hwsim_send_nullfunc_no_ps,
1755                                                     data);
1756         }
1757
1758         return 0;
1759 }
1760
1761 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1762                         "%llu\n");
1763
1764
1765 static int hwsim_fops_group_read(void *dat, u64 *val)
1766 {
1767         struct mac80211_hwsim_data *data = dat;
1768         *val = data->group;
1769         return 0;
1770 }
1771
1772 static int hwsim_fops_group_write(void *dat, u64 val)
1773 {
1774         struct mac80211_hwsim_data *data = dat;
1775         data->group = val;
1776         return 0;
1777 }
1778
1779 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1780                         hwsim_fops_group_read, hwsim_fops_group_write,
1781                         "%llx\n");
1782
1783 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1784                              struct mac_address *addr)
1785 {
1786         struct mac80211_hwsim_data *data;
1787         bool _found = false;
1788
1789         spin_lock_bh(&hwsim_radio_lock);
1790         list_for_each_entry(data, &hwsim_radios, list) {
1791                 if (memcmp(data->addresses[1].addr, addr,
1792                           sizeof(struct mac_address)) == 0) {
1793                         _found = true;
1794                         break;
1795                 }
1796         }
1797         spin_unlock_bh(&hwsim_radio_lock);
1798
1799         if (!_found)
1800                 return NULL;
1801
1802         return data;
1803 }
1804
1805 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1806                                            struct genl_info *info)
1807 {
1808
1809         struct ieee80211_hdr *hdr;
1810         struct mac80211_hwsim_data *data2;
1811         struct ieee80211_tx_info *txi;
1812         struct hwsim_tx_rate *tx_attempts;
1813         unsigned long ret_skb_ptr;
1814         struct sk_buff *skb, *tmp;
1815         struct mac_address *src;
1816         unsigned int hwsim_flags;
1817
1818         int i;
1819         bool found = false;
1820
1821         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1822            !info->attrs[HWSIM_ATTR_FLAGS] ||
1823            !info->attrs[HWSIM_ATTR_COOKIE] ||
1824            !info->attrs[HWSIM_ATTR_TX_INFO])
1825                 goto out;
1826
1827         src = (struct mac_address *)nla_data(
1828                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1829         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1830
1831         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1832
1833         data2 = get_hwsim_data_ref_from_addr(src);
1834
1835         if (data2 == NULL)
1836                 goto out;
1837
1838         /* look for the skb matching the cookie passed back from user */
1839         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1840                 if ((unsigned long)skb == ret_skb_ptr) {
1841                         skb_unlink(skb, &data2->pending);
1842                         found = true;
1843                         break;
1844                 }
1845         }
1846
1847         /* not found */
1848         if (!found)
1849                 goto out;
1850
1851         /* Tx info received because the frame was broadcasted on user space,
1852          so we get all the necessary info: tx attempts and skb control buff */
1853
1854         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1855                        info->attrs[HWSIM_ATTR_TX_INFO]);
1856
1857         /* now send back TX status */
1858         txi = IEEE80211_SKB_CB(skb);
1859
1860         ieee80211_tx_info_clear_status(txi);
1861
1862         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1863                 txi->status.rates[i].idx = tx_attempts[i].idx;
1864                 txi->status.rates[i].count = tx_attempts[i].count;
1865                 /*txi->status.rates[i].flags = 0;*/
1866         }
1867
1868         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1869
1870         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1871            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1872                 if (skb->len >= 16) {
1873                         hdr = (struct ieee80211_hdr *) skb->data;
1874                         mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
1875                                                    hdr->addr2);
1876                 }
1877                 txi->flags |= IEEE80211_TX_STAT_ACK;
1878         }
1879         ieee80211_tx_status_irqsafe(data2->hw, skb);
1880         return 0;
1881 out:
1882         return -EINVAL;
1883
1884 }
1885
1886 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1887                                           struct genl_info *info)
1888 {
1889
1890         struct mac80211_hwsim_data *data2;
1891         struct ieee80211_rx_status rx_status;
1892         struct mac_address *dst;
1893         int frame_data_len;
1894         char *frame_data;
1895         struct sk_buff *skb = NULL;
1896
1897         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1898             !info->attrs[HWSIM_ATTR_FRAME] ||
1899             !info->attrs[HWSIM_ATTR_RX_RATE] ||
1900             !info->attrs[HWSIM_ATTR_SIGNAL])
1901                 goto out;
1902
1903         dst = (struct mac_address *)nla_data(
1904                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1905
1906         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1907         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1908
1909         /* Allocate new skb here */
1910         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1911         if (skb == NULL)
1912                 goto err;
1913
1914         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1915                 /* Copy the data */
1916                 memcpy(skb_put(skb, frame_data_len), frame_data,
1917                        frame_data_len);
1918         } else
1919                 goto err;
1920
1921         data2 = get_hwsim_data_ref_from_addr(dst);
1922
1923         if (data2 == NULL)
1924                 goto out;
1925
1926         /* check if radio is configured properly */
1927
1928         if (data2->idle || !data2->started)
1929                 goto out;
1930
1931         /*A frame is received from user space*/
1932         memset(&rx_status, 0, sizeof(rx_status));
1933         rx_status.freq = data2->channel->center_freq;
1934         rx_status.band = data2->channel->band;
1935         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1936         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1937
1938         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1939         ieee80211_rx_irqsafe(data2->hw, skb);
1940
1941         return 0;
1942 err:
1943         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1944         goto out;
1945 out:
1946         dev_kfree_skb(skb);
1947         return -EINVAL;
1948 }
1949
1950 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1951                                       struct genl_info *info)
1952 {
1953         if (info == NULL)
1954                 goto out;
1955
1956         wmediumd_portid = info->snd_portid;
1957
1958         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1959                "switching to wmediumd mode with pid %d\n", info->snd_portid);
1960
1961         return 0;
1962 out:
1963         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1964         return -EINVAL;
1965 }
1966
1967 /* Generic Netlink operations array */
1968 static struct genl_ops hwsim_ops[] = {
1969         {
1970                 .cmd = HWSIM_CMD_REGISTER,
1971                 .policy = hwsim_genl_policy,
1972                 .doit = hwsim_register_received_nl,
1973                 .flags = GENL_ADMIN_PERM,
1974         },
1975         {
1976                 .cmd = HWSIM_CMD_FRAME,
1977                 .policy = hwsim_genl_policy,
1978                 .doit = hwsim_cloned_frame_received_nl,
1979         },
1980         {
1981                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1982                 .policy = hwsim_genl_policy,
1983                 .doit = hwsim_tx_info_frame_received_nl,
1984         },
1985 };
1986
1987 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1988                                          unsigned long state,
1989                                          void *_notify)
1990 {
1991         struct netlink_notify *notify = _notify;
1992
1993         if (state != NETLINK_URELEASE)
1994                 return NOTIFY_DONE;
1995
1996         if (notify->portid == wmediumd_portid) {
1997                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1998                        " socket, switching to perfect channel medium\n");
1999                 wmediumd_portid = 0;
2000         }
2001         return NOTIFY_DONE;
2002
2003 }
2004
2005 static struct notifier_block hwsim_netlink_notifier = {
2006         .notifier_call = mac80211_hwsim_netlink_notify,
2007 };
2008
2009 static int hwsim_init_netlink(void)
2010 {
2011         int rc;
2012
2013         /* userspace test API hasn't been adjusted for multi-channel */
2014         if (channels > 1)
2015                 return 0;
2016
2017         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2018
2019         rc = genl_register_family_with_ops(&hwsim_genl_family,
2020                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
2021         if (rc)
2022                 goto failure;
2023
2024         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2025         if (rc)
2026                 goto failure;
2027
2028         return 0;
2029
2030 failure:
2031         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2032         return -EINVAL;
2033 }
2034
2035 static void hwsim_exit_netlink(void)
2036 {
2037         int ret;
2038
2039         /* userspace test API hasn't been adjusted for multi-channel */
2040         if (channels > 1)
2041                 return;
2042
2043         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2044         /* unregister the notifier */
2045         netlink_unregister_notifier(&hwsim_netlink_notifier);
2046         /* unregister the family */
2047         ret = genl_unregister_family(&hwsim_genl_family);
2048         if (ret)
2049                 printk(KERN_DEBUG "mac80211_hwsim: "
2050                        "unregister family %i\n", ret);
2051 }
2052
2053 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2054         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2055         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2056                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2057 #ifdef CONFIG_MAC80211_MESH
2058                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2059 #endif
2060                                  BIT(NL80211_IFTYPE_AP) |
2061                                  BIT(NL80211_IFTYPE_P2P_GO) },
2062         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2063 };
2064
2065 static struct ieee80211_iface_combination hwsim_if_comb = {
2066         .limits = hwsim_if_limits,
2067         .n_limits = ARRAY_SIZE(hwsim_if_limits),
2068         .max_interfaces = 2048,
2069         .num_different_channels = 1,
2070 };
2071
2072 static int __init init_mac80211_hwsim(void)
2073 {
2074         int i, err = 0;
2075         u8 addr[ETH_ALEN];
2076         struct mac80211_hwsim_data *data;
2077         struct ieee80211_hw *hw;
2078         enum ieee80211_band band;
2079
2080         if (radios < 1 || radios > 100)
2081                 return -EINVAL;
2082
2083         if (channels < 1)
2084                 return -EINVAL;
2085
2086         if (channels > 1) {
2087                 hwsim_if_comb.num_different_channels = channels;
2088                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2089                 mac80211_hwsim_ops.cancel_hw_scan =
2090                         mac80211_hwsim_cancel_hw_scan;
2091                 mac80211_hwsim_ops.sw_scan_start = NULL;
2092                 mac80211_hwsim_ops.sw_scan_complete = NULL;
2093                 mac80211_hwsim_ops.remain_on_channel =
2094                         mac80211_hwsim_roc;
2095                 mac80211_hwsim_ops.cancel_remain_on_channel =
2096                         mac80211_hwsim_croc;
2097                 mac80211_hwsim_ops.add_chanctx =
2098                         mac80211_hwsim_add_chanctx;
2099                 mac80211_hwsim_ops.remove_chanctx =
2100                         mac80211_hwsim_remove_chanctx;
2101                 mac80211_hwsim_ops.change_chanctx =
2102                         mac80211_hwsim_change_chanctx;
2103                 mac80211_hwsim_ops.assign_vif_chanctx =
2104                         mac80211_hwsim_assign_vif_chanctx;
2105                 mac80211_hwsim_ops.unassign_vif_chanctx =
2106                         mac80211_hwsim_unassign_vif_chanctx;
2107         }
2108
2109         spin_lock_init(&hwsim_radio_lock);
2110         INIT_LIST_HEAD(&hwsim_radios);
2111
2112         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2113         if (IS_ERR(hwsim_class))
2114                 return PTR_ERR(hwsim_class);
2115
2116         memset(addr, 0, ETH_ALEN);
2117         addr[0] = 0x02;
2118
2119         for (i = 0; i < radios; i++) {
2120                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2121                        i);
2122                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2123                 if (!hw) {
2124                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2125                                "failed\n");
2126                         err = -ENOMEM;
2127                         goto failed;
2128                 }
2129                 data = hw->priv;
2130                 data->hw = hw;
2131
2132                 data->dev = device_create(hwsim_class, NULL, 0, hw,
2133                                           "hwsim%d", i);
2134                 if (IS_ERR(data->dev)) {
2135                         printk(KERN_DEBUG
2136                                "mac80211_hwsim: device_create "
2137                                "failed (%ld)\n", PTR_ERR(data->dev));
2138                         err = -ENOMEM;
2139                         goto failed_drvdata;
2140                 }
2141                 data->dev->driver = &mac80211_hwsim_driver;
2142                 skb_queue_head_init(&data->pending);
2143
2144                 SET_IEEE80211_DEV(hw, data->dev);
2145                 addr[3] = i >> 8;
2146                 addr[4] = i;
2147                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2148                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2149                 data->addresses[1].addr[0] |= 0x40;
2150                 hw->wiphy->n_addresses = 2;
2151                 hw->wiphy->addresses = data->addresses;
2152
2153                 hw->wiphy->iface_combinations = &hwsim_if_comb;
2154                 hw->wiphy->n_iface_combinations = 1;
2155
2156                 if (channels > 1) {
2157                         hw->wiphy->max_scan_ssids = 255;
2158                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2159                         hw->wiphy->max_remain_on_channel_duration = 1000;
2160                 }
2161
2162                 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2163                 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2164
2165                 hw->channel_change_time = 1;
2166                 hw->queues = 5;
2167                 hw->offchannel_tx_hw_queue = 4;
2168                 hw->wiphy->interface_modes =
2169                         BIT(NL80211_IFTYPE_STATION) |
2170                         BIT(NL80211_IFTYPE_AP) |
2171                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
2172                         BIT(NL80211_IFTYPE_P2P_GO) |
2173                         BIT(NL80211_IFTYPE_ADHOC) |
2174                         BIT(NL80211_IFTYPE_MESH_POINT) |
2175                         BIT(NL80211_IFTYPE_P2P_DEVICE);
2176
2177                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2178                             IEEE80211_HW_SIGNAL_DBM |
2179                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2180                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2181                             IEEE80211_HW_AMPDU_AGGREGATION |
2182                             IEEE80211_HW_WANT_MONITOR_VIF |
2183                             IEEE80211_HW_QUEUE_CONTROL;
2184
2185                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2186                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2187
2188                 /* ask mac80211 to reserve space for magic */
2189                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2190                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2191
2192                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2193                         sizeof(hwsim_channels_2ghz));
2194                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2195                         sizeof(hwsim_channels_5ghz));
2196                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2197
2198                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2199                         struct ieee80211_supported_band *sband = &data->bands[band];
2200                         switch (band) {
2201                         case IEEE80211_BAND_2GHZ:
2202                                 sband->channels = data->channels_2ghz;
2203                                 sband->n_channels =
2204                                         ARRAY_SIZE(hwsim_channels_2ghz);
2205                                 sband->bitrates = data->rates;
2206                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2207                                 break;
2208                         case IEEE80211_BAND_5GHZ:
2209                                 sband->channels = data->channels_5ghz;
2210                                 sband->n_channels =
2211                                         ARRAY_SIZE(hwsim_channels_5ghz);
2212                                 sband->bitrates = data->rates + 4;
2213                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2214                                 break;
2215                         default:
2216                                 continue;
2217                         }
2218
2219                         sband->ht_cap.ht_supported = true;
2220                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2221                                 IEEE80211_HT_CAP_GRN_FLD |
2222                                 IEEE80211_HT_CAP_SGI_40 |
2223                                 IEEE80211_HT_CAP_DSSSCCK40;
2224                         sband->ht_cap.ampdu_factor = 0x3;
2225                         sband->ht_cap.ampdu_density = 0x6;
2226                         memset(&sband->ht_cap.mcs, 0,
2227                                sizeof(sband->ht_cap.mcs));
2228                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
2229                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
2230                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2231
2232                         hw->wiphy->bands[band] = sband;
2233
2234                         if (channels == 1)
2235                                 continue;
2236
2237                         sband->vht_cap.vht_supported = true;
2238                         sband->vht_cap.cap =
2239                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2240                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2241                                 IEEE80211_VHT_CAP_RXLDPC |
2242                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2243                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2244                                 IEEE80211_VHT_CAP_TXSTBC |
2245                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2246                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2247                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2248                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2249                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2250                         sband->vht_cap.vht_mcs.rx_mcs_map =
2251                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2252                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2253                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2254                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2255                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2256                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2257                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2258                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2259                         sband->vht_cap.vht_mcs.tx_mcs_map =
2260                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2261                 }
2262                 /* By default all radios are belonging to the first group */
2263                 data->group = 1;
2264                 mutex_init(&data->mutex);
2265
2266                 /* Enable frame retransmissions for lossy channels */
2267                 hw->max_rates = 4;
2268                 hw->max_rate_tries = 11;
2269
2270                 /* Work to be done prior to ieee80211_register_hw() */
2271                 switch (regtest) {
2272                 case HWSIM_REGTEST_DISABLED:
2273                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2274                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2275                 case HWSIM_REGTEST_DIFF_COUNTRY:
2276                         /*
2277                          * Nothing to be done for driver regulatory domain
2278                          * hints prior to ieee80211_register_hw()
2279                          */
2280                         break;
2281                 case HWSIM_REGTEST_WORLD_ROAM:
2282                         if (i == 0) {
2283                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2284                                 wiphy_apply_custom_regulatory(hw->wiphy,
2285                                         &hwsim_world_regdom_custom_01);
2286                         }
2287                         break;
2288                 case HWSIM_REGTEST_CUSTOM_WORLD:
2289                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2290                         wiphy_apply_custom_regulatory(hw->wiphy,
2291                                 &hwsim_world_regdom_custom_01);
2292                         break;
2293                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2294                         if (i == 0) {
2295                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2296                                 wiphy_apply_custom_regulatory(hw->wiphy,
2297                                         &hwsim_world_regdom_custom_01);
2298                         } else if (i == 1) {
2299                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2300                                 wiphy_apply_custom_regulatory(hw->wiphy,
2301                                         &hwsim_world_regdom_custom_02);
2302                         }
2303                         break;
2304                 case HWSIM_REGTEST_STRICT_ALL:
2305                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2306                         break;
2307                 case HWSIM_REGTEST_STRICT_FOLLOW:
2308                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2309                         if (i == 0)
2310                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2311                         break;
2312                 case HWSIM_REGTEST_ALL:
2313                         if (i == 0) {
2314                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2315                                 wiphy_apply_custom_regulatory(hw->wiphy,
2316                                         &hwsim_world_regdom_custom_01);
2317                         } else if (i == 1) {
2318                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2319                                 wiphy_apply_custom_regulatory(hw->wiphy,
2320                                         &hwsim_world_regdom_custom_02);
2321                         } else if (i == 4)
2322                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2323                         break;
2324                 default:
2325                         break;
2326                 }
2327
2328                 /* give the regulatory workqueue a chance to run */
2329                 if (regtest)
2330                         schedule_timeout_interruptible(1);
2331                 err = ieee80211_register_hw(hw);
2332                 if (err < 0) {
2333                         printk(KERN_DEBUG "mac80211_hwsim: "
2334                                "ieee80211_register_hw failed (%d)\n", err);
2335                         goto failed_hw;
2336                 }
2337
2338                 /* Work to be done after to ieee80211_register_hw() */
2339                 switch (regtest) {
2340                 case HWSIM_REGTEST_WORLD_ROAM:
2341                 case HWSIM_REGTEST_DISABLED:
2342                         break;
2343                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2344                         if (!i)
2345                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2346                         break;
2347                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2348                 case HWSIM_REGTEST_STRICT_ALL:
2349                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2350                         break;
2351                 case HWSIM_REGTEST_DIFF_COUNTRY:
2352                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2353                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2354                         break;
2355                 case HWSIM_REGTEST_CUSTOM_WORLD:
2356                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2357                         /*
2358                          * Nothing to be done for custom world regulatory
2359                          * domains after to ieee80211_register_hw
2360                          */
2361                         break;
2362                 case HWSIM_REGTEST_STRICT_FOLLOW:
2363                         if (i == 0)
2364                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2365                         break;
2366                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2367                         if (i == 0)
2368                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2369                         else if (i == 1)
2370                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2371                         break;
2372                 case HWSIM_REGTEST_ALL:
2373                         if (i == 2)
2374                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2375                         else if (i == 3)
2376                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2377                         else if (i == 4)
2378                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2379                         break;
2380                 default:
2381                         break;
2382                 }
2383
2384                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2385                             hw->wiphy->perm_addr);
2386
2387                 data->debugfs = debugfs_create_dir("hwsim",
2388                                                    hw->wiphy->debugfsdir);
2389                 data->debugfs_ps = debugfs_create_file("ps", 0666,
2390                                                        data->debugfs, data,
2391                                                        &hwsim_fops_ps);
2392                 data->debugfs_group = debugfs_create_file("group", 0666,
2393                                                         data->debugfs, data,
2394                                                         &hwsim_fops_group);
2395
2396                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
2397                             (unsigned long) hw);
2398
2399                 list_add_tail(&data->list, &hwsim_radios);
2400         }
2401
2402         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2403         if (hwsim_mon == NULL)
2404                 goto failed;
2405
2406         rtnl_lock();
2407
2408         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2409         if (err < 0)
2410                 goto failed_mon;
2411
2412
2413         err = register_netdevice(hwsim_mon);
2414         if (err < 0)
2415                 goto failed_mon;
2416
2417         rtnl_unlock();
2418
2419         err = hwsim_init_netlink();
2420         if (err < 0)
2421                 goto failed_nl;
2422
2423         return 0;
2424
2425 failed_nl:
2426         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2427         return err;
2428
2429 failed_mon:
2430         rtnl_unlock();
2431         free_netdev(hwsim_mon);
2432         mac80211_hwsim_free();
2433         return err;
2434
2435 failed_hw:
2436         device_unregister(data->dev);
2437 failed_drvdata:
2438         ieee80211_free_hw(hw);
2439 failed:
2440         mac80211_hwsim_free();
2441         return err;
2442 }
2443 module_init(init_mac80211_hwsim);
2444
2445 static void __exit exit_mac80211_hwsim(void)
2446 {
2447         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2448
2449         hwsim_exit_netlink();
2450
2451         mac80211_hwsim_free();
2452         unregister_netdev(hwsim_mon);
2453 }
2454 module_exit(exit_mac80211_hwsim);