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/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include "mac80211_hwsim.h"
  34
  35 #define WARN_QUEUE 100
  36 #define MAX_QUEUE 200
  37
  38 MODULE_AUTHOR("Jouni Malinen");
  39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  40 MODULE_LICENSE("GPL");
  41
  42 static u32 wmediumd_portid;
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 /**
  57  * enum hwsim_regtest - the type of regulatory tests we offer
  58  *
  59  * These are the different values you can use for the regtest
  60  * module parameter. This is useful to help test world roaming
  61  * and the driver regulatory_hint() call and combinations of these.
  62  * If you want to do specific alpha2 regulatory domain tests simply
  63  * use the userspace regulatory request as that will be respected as
  64  * well without the need of this module parameter. This is designed
  65  * only for testing the driver regulatory request, world roaming
  66  * and all possible combinations.
  67  *
  68  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  69  *      this is the default value.
  70  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  71  *      hint, only one driver regulatory hint will be sent as such the
  72  *      secondary radios are expected to follow.
  73  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  74  *      request with all radios reporting the same regulatory domain.
  75  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  76  *      different regulatory domains requests. Expected behaviour is for
  77  *      an intersection to occur but each device will still use their
  78  *      respective regulatory requested domains. Subsequent radios will
  79  *      use the resulting intersection.
  80  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  81  *      this by using a custom beacon-capable regulatory domain for the first
  82  *      radio. All other device world roam.
  83  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  84  *      domain requests. All radios will adhere to this custom world regulatory
  85  *      domain.
  86  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  87  *      domain requests. The first radio will adhere to the first custom world
  88  *      regulatory domain, the second one to the second custom world regulatory
  89  *      domain. All other devices will world roam.
  90  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  91  *      settings, only the first radio will send a regulatory domain request
  92  *      and use strict settings. The rest of the radios are expected to follow.
  93  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  94  *      settings. All radios will adhere to this.
  95  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  96  *      domain settings, combined with secondary driver regulatory domain
  97  *      settings. The first radio will get a strict regulatory domain setting
  98  *      using the first driver regulatory request and the second radio will use
  99  *      non-strict settings using the second driver regulatory request. All
 100  *      other devices should follow the intersection created between the
 101  *      first two.
 102  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 103  *      at least 6 radios for a complete test. We will test in this order:
 104  *      1 - driver custom world regulatory domain
 105  *      2 - second custom world regulatory domain
 106  *      3 - first driver regulatory domain request
 107  *      4 - second driver regulatory domain request
 108  *      5 - strict regulatory domain settings using the third driver regulatory
 109  *          domain request
 110  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 111  *                 regulatory requests.
 112  */
 113 enum hwsim_regtest {
 114         HWSIM_REGTEST_DISABLED = 0,
 115         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 116         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 117         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 118         HWSIM_REGTEST_WORLD_ROAM = 4,
 119         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 120         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 121         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 122         HWSIM_REGTEST_STRICT_ALL = 8,
 123         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 124         HWSIM_REGTEST_ALL = 10,
 125 };
 126
 127 /* Set to one of the HWSIM_REGTEST_* values above */
 128 static int regtest = HWSIM_REGTEST_DISABLED;
 129 module_param(regtest, int, 0444);
 130 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 131
 132 static const char *hwsim_alpha2s[] = {
 133         "FI",
 134         "AL",
 135         "US",
 136         "DE",
 137         "JP",
 138         "AL",
 139 };
 140
 141 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 142         .n_reg_rules = 4,
 143         .alpha2 =  "99",
 144         .reg_rules = {
 145                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 146                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 147                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 148                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 149         }
 150 };
 151
 152 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 153         .n_reg_rules = 2,
 154         .alpha2 =  "99",
 155         .reg_rules = {
 156                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 157                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 158                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 159         }
 160 };
 161
 162 struct hwsim_vif_priv {
 163         u32 magic;
 164         u8 bssid[ETH_ALEN];
 165         bool assoc;
 166         u16 aid;
 167 };
 168
 169 #define HWSIM_VIF_MAGIC 0x69537748
 170
 171 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 172 {
 173         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 174         WARN(vp->magic != HWSIM_VIF_MAGIC,
 175              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 176              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 177 }
 178
 179 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 180 {
 181         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 182         vp->magic = HWSIM_VIF_MAGIC;
 183 }
 184
 185 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 186 {
 187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 188         vp->magic = 0;
 189 }
 190
 191 struct hwsim_sta_priv {
 192         u32 magic;
 193 };
 194
 195 #define HWSIM_STA_MAGIC 0x6d537749
 196
 197 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 198 {
 199         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 200         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 201 }
 202
 203 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 204 {
 205         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 206         sp->magic = HWSIM_STA_MAGIC;
 207 }
 208
 209 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 210 {
 211         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 212         sp->magic = 0;
 213 }
 214
 215 struct hwsim_chanctx_priv {
 216         u32 magic;
 217 };
 218
 219 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 220
 221 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 222 {
 223         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 224         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 225 }
 226
 227 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 228 {
 229         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 230         cp->magic = HWSIM_CHANCTX_MAGIC;
 231 }
 232
 233 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 234 {
 235         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 236         cp->magic = 0;
 237 }
 238
 239 static struct class *hwsim_class;
 240
 241 static struct net_device *hwsim_mon; /* global monitor netdev */
 242
 243 #define CHAN2G(_freq)  { \
 244         .band = IEEE80211_BAND_2GHZ, \
 245         .center_freq = (_freq), \
 246         .hw_value = (_freq), \
 247         .max_power = 20, \
 248 }
 249
 250 #define CHAN5G(_freq) { \
 251         .band = IEEE80211_BAND_5GHZ, \
 252         .center_freq = (_freq), \
 253         .hw_value = (_freq), \
 254         .max_power = 20, \
 255 }
 256
 257 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 258         CHAN2G(2412), /* Channel 1 */
 259         CHAN2G(2417), /* Channel 2 */
 260         CHAN2G(2422), /* Channel 3 */
 261         CHAN2G(2427), /* Channel 4 */
 262         CHAN2G(2432), /* Channel 5 */
 263         CHAN2G(2437), /* Channel 6 */
 264         CHAN2G(2442), /* Channel 7 */
 265         CHAN2G(2447), /* Channel 8 */
 266         CHAN2G(2452), /* Channel 9 */
 267         CHAN2G(2457), /* Channel 10 */
 268         CHAN2G(2462), /* Channel 11 */
 269         CHAN2G(2467), /* Channel 12 */
 270         CHAN2G(2472), /* Channel 13 */
 271         CHAN2G(2484), /* Channel 14 */
 272 };
 273
 274 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 275         CHAN5G(5180), /* Channel 36 */
 276         CHAN5G(5200), /* Channel 40 */
 277         CHAN5G(5220), /* Channel 44 */
 278         CHAN5G(5240), /* Channel 48 */
 279
 280         CHAN5G(5260), /* Channel 52 */
 281         CHAN5G(5280), /* Channel 56 */
 282         CHAN5G(5300), /* Channel 60 */
 283         CHAN5G(5320), /* Channel 64 */
 284
 285         CHAN5G(5500), /* Channel 100 */
 286         CHAN5G(5520), /* Channel 104 */
 287         CHAN5G(5540), /* Channel 108 */
 288         CHAN5G(5560), /* Channel 112 */
 289         CHAN5G(5580), /* Channel 116 */
 290         CHAN5G(5600), /* Channel 120 */
 291         CHAN5G(5620), /* Channel 124 */
 292         CHAN5G(5640), /* Channel 128 */
 293         CHAN5G(5660), /* Channel 132 */
 294         CHAN5G(5680), /* Channel 136 */
 295         CHAN5G(5700), /* Channel 140 */
 296
 297         CHAN5G(5745), /* Channel 149 */
 298         CHAN5G(5765), /* Channel 153 */
 299         CHAN5G(5785), /* Channel 157 */
 300         CHAN5G(5805), /* Channel 161 */
 301         CHAN5G(5825), /* Channel 165 */
 302 };
 303
 304 static const struct ieee80211_rate hwsim_rates[] = {
 305         { .bitrate = 10 },
 306         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 307         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 308         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 309         { .bitrate = 60 },
 310         { .bitrate = 90 },
 311         { .bitrate = 120 },
 312         { .bitrate = 180 },
 313         { .bitrate = 240 },
 314         { .bitrate = 360 },
 315         { .bitrate = 480 },
 316         { .bitrate = 540 }
 317 };
 318
 319 static spinlock_t hwsim_radio_lock;
 320 static struct list_head hwsim_radios;
 321
 322 struct mac80211_hwsim_data {
 323         struct list_head list;
 324         struct ieee80211_hw *hw;
 325         struct device *dev;
 326         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 327         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 328         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 329         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 330
 331         struct mac_address addresses[2];
 332
 333         struct ieee80211_channel *tmp_chan;
 334         struct delayed_work roc_done;
 335         struct delayed_work hw_scan;
 336         struct cfg80211_scan_request *hw_scan_request;
 337         struct ieee80211_vif *hw_scan_vif;
 338         int scan_chan_idx;
 339
 340         struct ieee80211_channel *channel;
 341         u64 beacon_int  /* beacon interval in us */;
 342         unsigned int rx_filter;
 343         bool started, idle, scanning;
 344         struct mutex mutex;
 345         struct tasklet_hrtimer beacon_timer;
 346         enum ps_mode {
 347                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 348         } ps;
 349         bool ps_poll_pending;
 350         struct dentry *debugfs;
 351         struct dentry *debugfs_ps;
 352
 353         struct sk_buff_head pending;    /* packets pending */
 354         /*
 355          * Only radios in the same group can communicate together (the
 356          * channel has to match too). Each bit represents a group. A
 357          * radio can be in more then one group.
 358          */
 359         u64 group;
 360         struct dentry *debugfs_group;
 361
 362         int power_level;
 363
 364         /* difference between this hw's clock and the real clock, in usecs */
 365         s64 tsf_offset;
 366         s64 bcn_delta;
 367         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 368         u64 abs_bcn_ts;
 369 };
 370
 371
 372 struct hwsim_radiotap_hdr {
 373         struct ieee80211_radiotap_header hdr;
 374         __le64 rt_tsft;
 375         u8 rt_flags;
 376         u8 rt_rate;
 377         __le16 rt_channel;
 378         __le16 rt_chbitmask;
 379 } __packed;
 380
 381 /* MAC80211_HWSIM netlinf family */
 382 static struct genl_family hwsim_genl_family = {
 383         .id = GENL_ID_GENERATE,
 384         .hdrsize = 0,
 385         .name = "MAC80211_HWSIM",
 386         .version = 1,
 387         .maxattr = HWSIM_ATTR_MAX,
 388 };
 389
 390 /* MAC80211_HWSIM netlink policy */
 391
 392 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 393         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 394                                        .len = 6*sizeof(u8) },
 395         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 396                                           .len = 6*sizeof(u8) },
 397         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 398                                .len = IEEE80211_MAX_DATA_LEN },
 399         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 400         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 401         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 402         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 403                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 404                                         struct hwsim_tx_rate)},
 405         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 406 };
 407
 408 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 409                                         struct net_device *dev)
 410 {
 411         /* TODO: allow packet injection */
 412         dev_kfree_skb(skb);
 413         return NETDEV_TX_OK;
 414 }
 415
 416 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 417 {
 418         return ktime_to_us(ktime_get_real());
 419 }
 420
 421 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 422 {
 423         u64 now = mac80211_hwsim_get_tsf_raw();
 424         return cpu_to_le64(now + data->tsf_offset);
 425 }
 426
 427 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 428                                   struct ieee80211_vif *vif)
 429 {
 430         struct mac80211_hwsim_data *data = hw->priv;
 431         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 432 }
 433
 434 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 435                 struct ieee80211_vif *vif, u64 tsf)
 436 {
 437         struct mac80211_hwsim_data *data = hw->priv;
 438         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 439         u32 bcn_int = data->beacon_int;
 440         s64 delta = tsf - now;
 441
 442         data->tsf_offset += delta;
 443         /* adjust after beaconing with new timestamp at old TBTT */
 444         data->bcn_delta = do_div(delta, bcn_int);
 445 }
 446
 447 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 448                                       struct sk_buff *tx_skb,
 449                                       struct ieee80211_channel *chan)
 450 {
 451         struct mac80211_hwsim_data *data = hw->priv;
 452         struct sk_buff *skb;
 453         struct hwsim_radiotap_hdr *hdr;
 454         u16 flags;
 455         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 456         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 457
 458         if (!netif_running(hwsim_mon))
 459                 return;
 460
 461         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 462         if (skb == NULL)
 463                 return;
 464
 465         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 466         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 467         hdr->hdr.it_pad = 0;
 468         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 469         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 470                                           (1 << IEEE80211_RADIOTAP_RATE) |
 471                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 472                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 473         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 474         hdr->rt_flags = 0;
 475         hdr->rt_rate = txrate->bitrate / 5;
 476         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 477         flags = IEEE80211_CHAN_2GHZ;
 478         if (txrate->flags & IEEE80211_RATE_ERP_G)
 479                 flags |= IEEE80211_CHAN_OFDM;
 480         else
 481                 flags |= IEEE80211_CHAN_CCK;
 482         hdr->rt_chbitmask = cpu_to_le16(flags);
 483
 484         skb->dev = hwsim_mon;
 485         skb_set_mac_header(skb, 0);
 486         skb->ip_summed = CHECKSUM_UNNECESSARY;
 487         skb->pkt_type = PACKET_OTHERHOST;
 488         skb->protocol = htons(ETH_P_802_2);
 489         memset(skb->cb, 0, sizeof(skb->cb));
 490         netif_rx(skb);
 491 }
 492
 493
 494 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 495                                        const u8 *addr)
 496 {
 497         struct sk_buff *skb;
 498         struct hwsim_radiotap_hdr *hdr;
 499         u16 flags;
 500         struct ieee80211_hdr *hdr11;
 501
 502         if (!netif_running(hwsim_mon))
 503                 return;
 504
 505         skb = dev_alloc_skb(100);
 506         if (skb == NULL)
 507                 return;
 508
 509         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 510         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 511         hdr->hdr.it_pad = 0;
 512         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 513         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 514                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 515         hdr->rt_flags = 0;
 516         hdr->rt_rate = 0;
 517         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 518         flags = IEEE80211_CHAN_2GHZ;
 519         hdr->rt_chbitmask = cpu_to_le16(flags);
 520
 521         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 522         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 523                                            IEEE80211_STYPE_ACK);
 524         hdr11->duration_id = cpu_to_le16(0);
 525         memcpy(hdr11->addr1, addr, ETH_ALEN);
 526
 527         skb->dev = hwsim_mon;
 528         skb_set_mac_header(skb, 0);
 529         skb->ip_summed = CHECKSUM_UNNECESSARY;
 530         skb->pkt_type = PACKET_OTHERHOST;
 531         skb->protocol = htons(ETH_P_802_2);
 532         memset(skb->cb, 0, sizeof(skb->cb));
 533         netif_rx(skb);
 534 }
 535
 536
 537 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 538                            struct sk_buff *skb)
 539 {
 540         switch (data->ps) {
 541         case PS_DISABLED:
 542                 return true;
 543         case PS_ENABLED:
 544                 return false;
 545         case PS_AUTO_POLL:
 546                 /* TODO: accept (some) Beacons by default and other frames only
 547                  * if pending PS-Poll has been sent */
 548                 return true;
 549         case PS_MANUAL_POLL:
 550                 /* Allow unicast frames to own address if there is a pending
 551                  * PS-Poll */
 552                 if (data->ps_poll_pending &&
 553                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 554                            ETH_ALEN) == 0) {
 555                         data->ps_poll_pending = false;
 556                         return true;
 557                 }
 558                 return false;
 559         }
 560
 561         return true;
 562 }
 563
 564
 565 struct mac80211_hwsim_addr_match_data {
 566         bool ret;
 567         const u8 *addr;
 568 };
 569
 570 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 571                                      struct ieee80211_vif *vif)
 572 {
 573         struct mac80211_hwsim_addr_match_data *md = data;
 574         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 575                 md->ret = true;
 576 }
 577
 578
 579 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 580                                       const u8 *addr)
 581 {
 582         struct mac80211_hwsim_addr_match_data md;
 583
 584         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 585                 return true;
 586
 587         md.ret = false;
 588         md.addr = addr;
 589         ieee80211_iterate_active_interfaces_atomic(data->hw,
 590                                                    IEEE80211_IFACE_ITER_NORMAL,
 591                                                    mac80211_hwsim_addr_iter,
 592                                                    &md);
 593
 594         return md.ret;
 595 }
 596
 597 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 598                                        struct sk_buff *my_skb,
 599                                        int dst_portid)
 600 {
 601         struct sk_buff *skb;
 602         struct mac80211_hwsim_data *data = hw->priv;
 603         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 604         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 605         void *msg_head;
 606         unsigned int hwsim_flags = 0;
 607         int i;
 608         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 609
 610         if (data->ps != PS_DISABLED)
 611                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 612         /* If the queue contains MAX_QUEUE skb's drop some */
 613         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 614                 /* Droping until WARN_QUEUE level */
 615                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 616                         skb_dequeue(&data->pending);
 617         }
 618
 619         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 620         if (skb == NULL)
 621                 goto nla_put_failure;
 622
 623         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 624                                HWSIM_CMD_FRAME);
 625         if (msg_head == NULL) {
 626                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 627                 goto nla_put_failure;
 628         }
 629
 630         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 631                     sizeof(struct mac_address), data->addresses[1].addr))
 632                 goto nla_put_failure;
 633
 634         /* We get the skb->data */
 635         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 636                 goto nla_put_failure;
 637
 638         /* We get the flags for this transmission, and we translate them to
 639            wmediumd flags  */
 640
 641         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 642                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 643
 644         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 645                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 646
 647         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 648                 goto nla_put_failure;
 649
 650         /* We get the tx control (rate and retries) info*/
 651
 652         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 653                 tx_attempts[i].idx = info->status.rates[i].idx;
 654                 tx_attempts[i].count = info->status.rates[i].count;
 655         }
 656
 657         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 658                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 659                     tx_attempts))
 660                 goto nla_put_failure;
 661
 662         /* We create a cookie to identify this skb */
 663         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 664                 goto nla_put_failure;
 665
 666         genlmsg_end(skb, msg_head);
 667         genlmsg_unicast(&init_net, skb, dst_portid);
 668
 669         /* Enqueue the packet */
 670         skb_queue_tail(&data->pending, my_skb);
 671         return;
 672
 673 nla_put_failure:
 674         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 675 }
 676
 677 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 678                                struct ieee80211_channel *c2)
 679 {
 680         if (!c1 || !c2)
 681                 return false;
 682
 683         return c1->center_freq == c2->center_freq;
 684 }
 685
 686 struct tx_iter_data {
 687         struct ieee80211_channel *channel;
 688         bool receive;
 689 };
 690
 691 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 692                                    struct ieee80211_vif *vif)
 693 {
 694         struct tx_iter_data *data = _data;
 695
 696         if (!vif->chanctx_conf)
 697                 return;
 698
 699         if (!hwsim_chans_compat(data->channel,
 700                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 701                 return;
 702
 703         data->receive = true;
 704 }
 705
 706 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 707                                           struct sk_buff *skb,
 708                                           struct ieee80211_channel *chan)
 709 {
 710         struct mac80211_hwsim_data *data = hw->priv, *data2;
 711         bool ack = false;
 712         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 713         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 714         struct ieee80211_rx_status rx_status;
 715         u64 now;
 716
 717         memset(&rx_status, 0, sizeof(rx_status));
 718         rx_status.flag |= RX_FLAG_MACTIME_START;
 719         rx_status.freq = chan->center_freq;
 720         rx_status.band = chan->band;
 721         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 722                 rx_status.rate_idx =
 723                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
 724                 rx_status.vht_nss =
 725                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
 726                 rx_status.flag |= RX_FLAG_VHT;
 727         } else {
 728                 rx_status.rate_idx = info->control.rates[0].idx;
 729                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 730                         rx_status.flag |= RX_FLAG_HT;
 731         }
 732         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 733                 rx_status.flag |= RX_FLAG_40MHZ;
 734         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 735                 rx_status.flag |= RX_FLAG_SHORT_GI;
 736         /* TODO: simulate real signal strength (and optional packet loss) */
 737         rx_status.signal = data->power_level - 50;
 738
 739         if (data->ps != PS_DISABLED)
 740                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 741
 742         /* release the skb's source info */
 743         skb_orphan(skb);
 744         skb_dst_drop(skb);
 745         skb->mark = 0;
 746         secpath_reset(skb);
 747         nf_reset(skb);
 748
 749         /*
 750          * Get absolute mactime here so all HWs RX at the "same time", and
 751          * absolute TX time for beacon mactime so the timestamp matches.
 752          * Giving beacons a different mactime than non-beacons looks messy, but
 753          * it helps the Toffset be exact and a ~10us mactime discrepancy
 754          * probably doesn't really matter.
 755          */
 756         if (ieee80211_is_beacon(hdr->frame_control) ||
 757             ieee80211_is_probe_resp(hdr->frame_control))
 758                 now = data->abs_bcn_ts;
 759         else
 760                 now = mac80211_hwsim_get_tsf_raw();
 761
 762         /* Copy skb to all enabled radios that are on the current frequency */
 763         spin_lock(&hwsim_radio_lock);
 764         list_for_each_entry(data2, &hwsim_radios, list) {
 765                 struct sk_buff *nskb;
 766                 struct tx_iter_data tx_iter_data = {
 767                         .receive = false,
 768                         .channel = chan,
 769                 };
 770
 771                 if (data == data2)
 772                         continue;
 773
 774                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 775                     !hwsim_ps_rx_ok(data2, skb))
 776                         continue;
 777
 778                 if (!(data->group & data2->group))
 779                         continue;
 780
 781                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 782                     !hwsim_chans_compat(chan, data2->channel)) {
 783                         ieee80211_iterate_active_interfaces_atomic(
 784                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 785                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 786                         if (!tx_iter_data.receive)
 787                                 continue;
 788                 }
 789
 790                 /*
 791                  * reserve some space for our vendor and the normal
 792                  * radiotap header, since we're copying anyway
 793                  */
 794                 if (skb->len < PAGE_SIZE && paged_rx) {
 795                         struct page *page = alloc_page(GFP_ATOMIC);
 796
 797                         if (!page)
 798                                 continue;
 799
 800                         nskb = dev_alloc_skb(128);
 801                         if (!nskb) {
 802                                 __free_page(page);
 803                                 continue;
 804                         }
 805
 806                         memcpy(page_address(page), skb->data, skb->len);
 807                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 808                 } else {
 809                         nskb = skb_copy(skb, GFP_ATOMIC);
 810                         if (!nskb)
 811                                 continue;
 812                 }
 813
 814                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 815                         ack = true;
 816
 817                 rx_status.mactime = now + data2->tsf_offset;
 818 #if 0
 819                 /*
 820                  * Don't enable this code by default as the OUI 00:00:00
 821                  * is registered to Xerox so we shouldn't use it here, it
 822                  * might find its way into pcap files.
 823                  * Note that this code requires the headroom in the SKB
 824                  * that was allocated earlier.
 825                  */
 826                 rx_status.vendor_radiotap_oui[0] = 0x00;
 827                 rx_status.vendor_radiotap_oui[1] = 0x00;
 828                 rx_status.vendor_radiotap_oui[2] = 0x00;
 829                 rx_status.vendor_radiotap_subns = 127;
 830                 /*
 831                  * Radiotap vendor namespaces can (and should) also be
 832                  * split into fields by using the standard radiotap
 833                  * presence bitmap mechanism. Use just BIT(0) here for
 834                  * the presence bitmap.
 835                  */
 836                 rx_status.vendor_radiotap_bitmap = BIT(0);
 837                 /* We have 8 bytes of (dummy) data */
 838                 rx_status.vendor_radiotap_len = 8;
 839                 /* For testing, also require it to be aligned */
 840                 rx_status.vendor_radiotap_align = 8;
 841                 /* push the data */
 842                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 843 #endif
 844
 845                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 846                 ieee80211_rx_irqsafe(data2->hw, nskb);
 847         }
 848         spin_unlock(&hwsim_radio_lock);
 849
 850         return ack;
 851 }
 852
 853 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 854                               struct ieee80211_tx_control *control,
 855                               struct sk_buff *skb)
 856 {
 857         struct mac80211_hwsim_data *data = hw->priv;
 858         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 859         struct ieee80211_chanctx_conf *chanctx_conf;
 860         struct ieee80211_channel *channel;
 861         bool ack;
 862         u32 _portid;
 863
 864         if (WARN_ON(skb->len < 10)) {
 865                 /* Should not happen; just a sanity check for addr1 use */
 866                 dev_kfree_skb(skb);
 867                 return;
 868         }
 869
 870         if (channels == 1) {
 871                 channel = data->channel;
 872         } else if (txi->hw_queue == 4) {
 873                 channel = data->tmp_chan;
 874         } else {
 875                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 876                 if (chanctx_conf)
 877                         channel = chanctx_conf->def.chan;
 878                 else
 879                         channel = NULL;
 880         }
 881
 882         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 883                 dev_kfree_skb(skb);
 884                 return;
 885         }
 886
 887         if (data->idle && !data->tmp_chan) {
 888                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 889                 dev_kfree_skb(skb);
 890                 return;
 891         }
 892
 893         if (txi->control.vif)
 894                 hwsim_check_magic(txi->control.vif);
 895         if (control->sta)
 896                 hwsim_check_sta_magic(control->sta);
 897
 898         txi->rate_driver_data[0] = channel;
 899
 900         mac80211_hwsim_monitor_rx(hw, skb, channel);
 901
 902         /* wmediumd mode check */
 903         _portid = ACCESS_ONCE(wmediumd_portid);
 904
 905         if (_portid)
 906                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 907
 908         /* NO wmediumd detected, perfect medium simulation */
 909         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 910
 911         if (ack && skb->len >= 16) {
 912                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 913                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 914         }
 915
 916         ieee80211_tx_info_clear_status(txi);
 917
 918         /* frame was transmitted at most favorable rate at first attempt */
 919         txi->control.rates[0].count = 1;
 920         txi->control.rates[1].idx = -1;
 921
 922         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 923                 txi->flags |= IEEE80211_TX_STAT_ACK;
 924         ieee80211_tx_status_irqsafe(hw, skb);
 925 }
 926
 927
 928 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 929 {
 930         struct mac80211_hwsim_data *data = hw->priv;
 931         wiphy_debug(hw->wiphy, "%s\n", __func__);
 932         data->started = true;
 933         return 0;
 934 }
 935
 936
 937 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 938 {
 939         struct mac80211_hwsim_data *data = hw->priv;
 940         data->started = false;
 941         tasklet_hrtimer_cancel(&data->beacon_timer);
 942         wiphy_debug(hw->wiphy, "%s\n", __func__);
 943 }
 944
 945
 946 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 947                                         struct ieee80211_vif *vif)
 948 {
 949         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 950                     __func__, ieee80211_vif_type_p2p(vif),
 951                     vif->addr);
 952         hwsim_set_magic(vif);
 953
 954         vif->cab_queue = 0;
 955         vif->hw_queue[IEEE80211_AC_VO] = 0;
 956         vif->hw_queue[IEEE80211_AC_VI] = 1;
 957         vif->hw_queue[IEEE80211_AC_BE] = 2;
 958         vif->hw_queue[IEEE80211_AC_BK] = 3;
 959
 960         return 0;
 961 }
 962
 963
 964 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 965                                            struct ieee80211_vif *vif,
 966                                            enum nl80211_iftype newtype,
 967                                            bool newp2p)
 968 {
 969         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 970         wiphy_debug(hw->wiphy,
 971                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 972                     __func__, ieee80211_vif_type_p2p(vif),
 973                     newtype, vif->addr);
 974         hwsim_check_magic(vif);
 975
 976         /*
 977          * interface may change from non-AP to AP in
 978          * which case this needs to be set up again
 979          */
 980         vif->cab_queue = 0;
 981
 982         return 0;
 983 }
 984
 985 static void mac80211_hwsim_remove_interface(
 986         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 987 {
 988         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 989                     __func__, ieee80211_vif_type_p2p(vif),
 990                     vif->addr);
 991         hwsim_check_magic(vif);
 992         hwsim_clear_magic(vif);
 993 }
 994
 995 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 996                                     struct sk_buff *skb,
 997                                     struct ieee80211_channel *chan)
 998 {
 999         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1000
1001         mac80211_hwsim_monitor_rx(hw, skb, chan);
1002
1003         if (_pid)
1004                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1005
1006         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1007         dev_kfree_skb(skb);
1008 }
1009
1010 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1011                                      struct ieee80211_vif *vif)
1012 {
1013         struct mac80211_hwsim_data *data = arg;
1014         struct ieee80211_hw *hw = data->hw;
1015         struct ieee80211_tx_info *info;
1016         struct ieee80211_rate *txrate;
1017         struct ieee80211_mgmt *mgmt;
1018         struct sk_buff *skb;
1019
1020         hwsim_check_magic(vif);
1021
1022         if (vif->type != NL80211_IFTYPE_AP &&
1023             vif->type != NL80211_IFTYPE_MESH_POINT &&
1024             vif->type != NL80211_IFTYPE_ADHOC)
1025                 return;
1026
1027         skb = ieee80211_beacon_get(hw, vif);
1028         if (skb == NULL)
1029                 return;
1030         info = IEEE80211_SKB_CB(skb);
1031         txrate = ieee80211_get_tx_rate(hw, info);
1032
1033         mgmt = (struct ieee80211_mgmt *) skb->data;
1034         /* fake header transmission time */
1035         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1036         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1037                                                data->tsf_offset +
1038                                                24 * 8 * 10 / txrate->bitrate);
1039
1040         mac80211_hwsim_tx_frame(hw, skb,
1041                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1042 }
1043
1044 static enum hrtimer_restart
1045 mac80211_hwsim_beacon(struct hrtimer *timer)
1046 {
1047         struct mac80211_hwsim_data *data =
1048                 container_of(timer, struct mac80211_hwsim_data,
1049                              beacon_timer.timer);
1050         struct ieee80211_hw *hw = data->hw;
1051         u64 bcn_int = data->beacon_int;
1052         ktime_t next_bcn;
1053
1054         if (!data->started)
1055                 goto out;
1056
1057         ieee80211_iterate_active_interfaces_atomic(
1058                 hw, IEEE80211_IFACE_ITER_NORMAL,
1059                 mac80211_hwsim_beacon_tx, data);
1060
1061         /* beacon at new TBTT + beacon interval */
1062         if (data->bcn_delta) {
1063                 bcn_int -= data->bcn_delta;
1064                 data->bcn_delta = 0;
1065         }
1066
1067         next_bcn = ktime_add(hrtimer_get_expires(timer),
1068                              ns_to_ktime(bcn_int * 1000));
1069         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1070 out:
1071         return HRTIMER_NORESTART;
1072 }
1073
1074 static const char * const hwsim_chanwidths[] = {
1075         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1076         [NL80211_CHAN_WIDTH_20] = "ht20",
1077         [NL80211_CHAN_WIDTH_40] = "ht40",
1078         [NL80211_CHAN_WIDTH_80] = "vht80",
1079         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1080         [NL80211_CHAN_WIDTH_160] = "vht160",
1081 };
1082
1083 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1084 {
1085         struct mac80211_hwsim_data *data = hw->priv;
1086         struct ieee80211_conf *conf = &hw->conf;
1087         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1088                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1089                 [IEEE80211_SMPS_OFF] = "off",
1090                 [IEEE80211_SMPS_STATIC] = "static",
1091                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1092         };
1093
1094         if (conf->chandef.chan)
1095                 wiphy_debug(hw->wiphy,
1096                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1097                             __func__,
1098                             conf->chandef.chan->center_freq,
1099                             conf->chandef.center_freq1,
1100                             conf->chandef.center_freq2,
1101                             hwsim_chanwidths[conf->chandef.width],
1102                             !!(conf->flags & IEEE80211_CONF_IDLE),
1103                             !!(conf->flags & IEEE80211_CONF_PS),
1104                             smps_modes[conf->smps_mode]);
1105         else
1106                 wiphy_debug(hw->wiphy,
1107                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1108                             __func__,
1109                             !!(conf->flags & IEEE80211_CONF_IDLE),
1110                             !!(conf->flags & IEEE80211_CONF_PS),
1111                             smps_modes[conf->smps_mode]);
1112
1113         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1114
1115         data->channel = conf->chandef.chan;
1116
1117         WARN_ON(data->channel && channels > 1);
1118
1119         data->power_level = conf->power_level;
1120         if (!data->started || !data->beacon_int)
1121                 tasklet_hrtimer_cancel(&data->beacon_timer);
1122         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1123                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1124                 u32 bcn_int = data->beacon_int;
1125                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1126
1127                 tasklet_hrtimer_start(&data->beacon_timer,
1128                                       ns_to_ktime(until_tbtt * 1000),
1129                                       HRTIMER_MODE_REL);
1130         }
1131
1132         return 0;
1133 }
1134
1135
1136 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1137                                             unsigned int changed_flags,
1138                                             unsigned int *total_flags,u64 multicast)
1139 {
1140         struct mac80211_hwsim_data *data = hw->priv;
1141
1142         wiphy_debug(hw->wiphy, "%s\n", __func__);
1143
1144         data->rx_filter = 0;
1145         if (*total_flags & FIF_PROMISC_IN_BSS)
1146                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1147         if (*total_flags & FIF_ALLMULTI)
1148                 data->rx_filter |= FIF_ALLMULTI;
1149
1150         *total_flags = data->rx_filter;
1151 }
1152
1153 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1154                                             struct ieee80211_vif *vif,
1155                                             struct ieee80211_bss_conf *info,
1156                                             u32 changed)
1157 {
1158         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1159         struct mac80211_hwsim_data *data = hw->priv;
1160
1161         hwsim_check_magic(vif);
1162
1163         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
1164
1165         if (changed & BSS_CHANGED_BSSID) {
1166                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1167                             __func__, info->bssid);
1168                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1169         }
1170
1171         if (changed & BSS_CHANGED_ASSOC) {
1172                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1173                             info->assoc, info->aid);
1174                 vp->assoc = info->assoc;
1175                 vp->aid = info->aid;
1176         }
1177
1178         if (changed & BSS_CHANGED_BEACON_INT) {
1179                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1180                 data->beacon_int = info->beacon_int * 1024;
1181         }
1182
1183         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1184                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1185                 if (data->started &&
1186                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1187                     info->enable_beacon) {
1188                         u64 tsf, until_tbtt;
1189                         u32 bcn_int;
1190                         if (WARN_ON(!data->beacon_int))
1191                                 data->beacon_int = 1000 * 1024;
1192                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1193                         bcn_int = data->beacon_int;
1194                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1195                         tasklet_hrtimer_start(&data->beacon_timer,
1196                                               ns_to_ktime(until_tbtt * 1000),
1197                                               HRTIMER_MODE_REL);
1198                 } else if (!info->enable_beacon)
1199                         tasklet_hrtimer_cancel(&data->beacon_timer);
1200         }
1201
1202         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1203                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1204                             info->use_cts_prot);
1205         }
1206
1207         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1208                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1209                             info->use_short_preamble);
1210         }
1211
1212         if (changed & BSS_CHANGED_ERP_SLOT) {
1213                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1214         }
1215
1216         if (changed & BSS_CHANGED_HT) {
1217                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1218                             info->ht_operation_mode);
1219         }
1220
1221         if (changed & BSS_CHANGED_BASIC_RATES) {
1222                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1223                             (unsigned long long) info->basic_rates);
1224         }
1225
1226         if (changed & BSS_CHANGED_TXPOWER)
1227                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1228 }
1229
1230 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1231                                   struct ieee80211_vif *vif,
1232                                   struct ieee80211_sta *sta)
1233 {
1234         hwsim_check_magic(vif);
1235         hwsim_set_sta_magic(sta);
1236
1237         return 0;
1238 }
1239
1240 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1241                                      struct ieee80211_vif *vif,
1242                                      struct ieee80211_sta *sta)
1243 {
1244         hwsim_check_magic(vif);
1245         hwsim_clear_sta_magic(sta);
1246
1247         return 0;
1248 }
1249
1250 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1251                                       struct ieee80211_vif *vif,
1252                                       enum sta_notify_cmd cmd,
1253                                       struct ieee80211_sta *sta)
1254 {
1255         hwsim_check_magic(vif);
1256
1257         switch (cmd) {
1258         case STA_NOTIFY_SLEEP:
1259         case STA_NOTIFY_AWAKE:
1260                 /* TODO: make good use of these flags */
1261                 break;
1262         default:
1263                 WARN(1, "Invalid sta notify: %d\n", cmd);
1264                 break;
1265         }
1266 }
1267
1268 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1269                                   struct ieee80211_sta *sta,
1270                                   bool set)
1271 {
1272         hwsim_check_sta_magic(sta);
1273         return 0;
1274 }
1275
1276 static int mac80211_hwsim_conf_tx(
1277         struct ieee80211_hw *hw,
1278         struct ieee80211_vif *vif, u16 queue,
1279         const struct ieee80211_tx_queue_params *params)
1280 {
1281         wiphy_debug(hw->wiphy,
1282                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1283                     __func__, queue,
1284                     params->txop, params->cw_min,
1285                     params->cw_max, params->aifs);
1286         return 0;
1287 }
1288
1289 static int mac80211_hwsim_get_survey(
1290         struct ieee80211_hw *hw, int idx,
1291         struct survey_info *survey)
1292 {
1293         struct ieee80211_conf *conf = &hw->conf;
1294
1295         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1296
1297         if (idx != 0)
1298                 return -ENOENT;
1299
1300         /* Current channel */
1301         survey->channel = conf->chandef.chan;
1302
1303         /*
1304          * Magically conjured noise level --- this is only ok for simulated hardware.
1305          *
1306          * A real driver which cannot determine the real channel noise MUST NOT
1307          * report any noise, especially not a magically conjured one :-)
1308          */
1309         survey->filled = SURVEY_INFO_NOISE_DBM;
1310         survey->noise = -92;
1311
1312         return 0;
1313 }
1314
1315 #ifdef CONFIG_NL80211_TESTMODE
1316 /*
1317  * This section contains example code for using netlink
1318  * attributes with the testmode command in nl80211.
1319  */
1320
1321 /* These enums need to be kept in sync with userspace */
1322 enum hwsim_testmode_attr {
1323         __HWSIM_TM_ATTR_INVALID = 0,
1324         HWSIM_TM_ATTR_CMD       = 1,
1325         HWSIM_TM_ATTR_PS        = 2,
1326
1327         /* keep last */
1328         __HWSIM_TM_ATTR_AFTER_LAST,
1329         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1330 };
1331
1332 enum hwsim_testmode_cmd {
1333         HWSIM_TM_CMD_SET_PS             = 0,
1334         HWSIM_TM_CMD_GET_PS             = 1,
1335         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1336         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1337 };
1338
1339 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1340         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1341         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1342 };
1343
1344 static int hwsim_fops_ps_write(void *dat, u64 val);
1345
1346 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1347                                        void *data, int len)
1348 {
1349         struct mac80211_hwsim_data *hwsim = hw->priv;
1350         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1351         struct sk_buff *skb;
1352         int err, ps;
1353
1354         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1355                         hwsim_testmode_policy);
1356         if (err)
1357                 return err;
1358
1359         if (!tb[HWSIM_TM_ATTR_CMD])
1360                 return -EINVAL;
1361
1362         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1363         case HWSIM_TM_CMD_SET_PS:
1364                 if (!tb[HWSIM_TM_ATTR_PS])
1365                         return -EINVAL;
1366                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1367                 return hwsim_fops_ps_write(hwsim, ps);
1368         case HWSIM_TM_CMD_GET_PS:
1369                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1370                                                 nla_total_size(sizeof(u32)));
1371                 if (!skb)
1372                         return -ENOMEM;
1373                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1374                         goto nla_put_failure;
1375                 return cfg80211_testmode_reply(skb);
1376         case HWSIM_TM_CMD_STOP_QUEUES:
1377                 ieee80211_stop_queues(hw);
1378                 return 0;
1379         case HWSIM_TM_CMD_WAKE_QUEUES:
1380                 ieee80211_wake_queues(hw);
1381                 return 0;
1382         default:
1383                 return -EOPNOTSUPP;
1384         }
1385
1386  nla_put_failure:
1387         kfree_skb(skb);
1388         return -ENOBUFS;
1389 }
1390 #endif
1391
1392 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1393                                        struct ieee80211_vif *vif,
1394                                        enum ieee80211_ampdu_mlme_action action,
1395                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1396                                        u8 buf_size)
1397 {
1398         switch (action) {
1399         case IEEE80211_AMPDU_TX_START:
1400                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1401                 break;
1402         case IEEE80211_AMPDU_TX_STOP_CONT:
1403         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1404         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1405                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1406                 break;
1407         case IEEE80211_AMPDU_TX_OPERATIONAL:
1408                 break;
1409         case IEEE80211_AMPDU_RX_START:
1410         case IEEE80211_AMPDU_RX_STOP:
1411                 break;
1412         default:
1413                 return -EOPNOTSUPP;
1414         }
1415
1416         return 0;
1417 }
1418
1419 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1420 {
1421         /* Not implemented, queues only on kernel side */
1422 }
1423
1424 static void hw_scan_work(struct work_struct *work)
1425 {
1426         struct mac80211_hwsim_data *hwsim =
1427                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1428         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1429         int dwell, i;
1430
1431         mutex_lock(&hwsim->mutex);
1432         if (hwsim->scan_chan_idx >= req->n_channels) {
1433                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1434                 ieee80211_scan_completed(hwsim->hw, false);
1435                 hwsim->hw_scan_request = NULL;
1436                 hwsim->hw_scan_vif = NULL;
1437                 hwsim->tmp_chan = NULL;
1438                 mutex_unlock(&hwsim->mutex);
1439                 return;
1440         }
1441
1442         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1443                     req->channels[hwsim->scan_chan_idx]->center_freq);
1444
1445         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1446         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
1447             !req->n_ssids) {
1448                 dwell = 120;
1449         } else {
1450                 dwell = 30;
1451                 /* send probes */
1452                 for (i = 0; i < req->n_ssids; i++) {
1453                         struct sk_buff *probe;
1454
1455                         probe = ieee80211_probereq_get(hwsim->hw,
1456                                                        hwsim->hw_scan_vif,
1457                                                        req->ssids[i].ssid,
1458                                                        req->ssids[i].ssid_len,
1459                                                        req->ie_len);
1460                         if (!probe)
1461                                 continue;
1462
1463                         if (req->ie_len)
1464                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1465                                        req->ie_len);
1466
1467                         local_bh_disable();
1468                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1469                                                 hwsim->tmp_chan);
1470                         local_bh_enable();
1471                 }
1472         }
1473         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1474                                      msecs_to_jiffies(dwell));
1475         hwsim->scan_chan_idx++;
1476         mutex_unlock(&hwsim->mutex);
1477 }
1478
1479 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1480                                   struct ieee80211_vif *vif,
1481                                   struct cfg80211_scan_request *req)
1482 {
1483         struct mac80211_hwsim_data *hwsim = hw->priv;
1484
1485         mutex_lock(&hwsim->mutex);
1486         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1487                 mutex_unlock(&hwsim->mutex);
1488                 return -EBUSY;
1489         }
1490         hwsim->hw_scan_request = req;
1491         hwsim->hw_scan_vif = vif;
1492         hwsim->scan_chan_idx = 0;
1493         mutex_unlock(&hwsim->mutex);
1494
1495         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1496
1497         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1498
1499         return 0;
1500 }
1501
1502 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1503                                           struct ieee80211_vif *vif)
1504 {
1505         struct mac80211_hwsim_data *hwsim = hw->priv;
1506
1507         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1508
1509         cancel_delayed_work_sync(&hwsim->hw_scan);
1510
1511         mutex_lock(&hwsim->mutex);
1512         ieee80211_scan_completed(hwsim->hw, true);
1513         hwsim->tmp_chan = NULL;
1514         hwsim->hw_scan_request = NULL;
1515         hwsim->hw_scan_vif = NULL;
1516         mutex_unlock(&hwsim->mutex);
1517 }
1518
1519 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1520 {
1521         struct mac80211_hwsim_data *hwsim = hw->priv;
1522
1523         mutex_lock(&hwsim->mutex);
1524
1525         if (hwsim->scanning) {
1526                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1527                 goto out;
1528         }
1529
1530         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1531         hwsim->scanning = true;
1532
1533 out:
1534         mutex_unlock(&hwsim->mutex);
1535 }
1536
1537 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1538 {
1539         struct mac80211_hwsim_data *hwsim = hw->priv;
1540
1541         mutex_lock(&hwsim->mutex);
1542
1543         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1544         hwsim->scanning = false;
1545
1546         mutex_unlock(&hwsim->mutex);
1547 }
1548
1549 static void hw_roc_done(struct work_struct *work)
1550 {
1551         struct mac80211_hwsim_data *hwsim =
1552                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1553
1554         mutex_lock(&hwsim->mutex);
1555         ieee80211_remain_on_channel_expired(hwsim->hw);
1556         hwsim->tmp_chan = NULL;
1557         mutex_unlock(&hwsim->mutex);
1558
1559         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1560 }
1561
1562 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1563                               struct ieee80211_vif *vif,
1564                               struct ieee80211_channel *chan,
1565                               int duration,
1566                               enum ieee80211_roc_type type)
1567 {
1568         struct mac80211_hwsim_data *hwsim = hw->priv;
1569
1570         mutex_lock(&hwsim->mutex);
1571         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1572                 mutex_unlock(&hwsim->mutex);
1573                 return -EBUSY;
1574         }
1575
1576         hwsim->tmp_chan = chan;
1577         mutex_unlock(&hwsim->mutex);
1578
1579         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1580                     chan->center_freq, duration);
1581
1582         ieee80211_ready_on_channel(hw);
1583
1584         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1585                                      msecs_to_jiffies(duration));
1586         return 0;
1587 }
1588
1589 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1590 {
1591         struct mac80211_hwsim_data *hwsim = hw->priv;
1592
1593         cancel_delayed_work_sync(&hwsim->roc_done);
1594
1595         mutex_lock(&hwsim->mutex);
1596         hwsim->tmp_chan = NULL;
1597         mutex_unlock(&hwsim->mutex);
1598
1599         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1600
1601         return 0;
1602 }
1603
1604 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1605                                       struct ieee80211_chanctx_conf *ctx)
1606 {
1607         hwsim_set_chanctx_magic(ctx);
1608         wiphy_debug(hw->wiphy,
1609                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1610                     ctx->def.chan->center_freq, ctx->def.width,
1611                     ctx->def.center_freq1, ctx->def.center_freq2);
1612         return 0;
1613 }
1614
1615 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1616                                           struct ieee80211_chanctx_conf *ctx)
1617 {
1618         wiphy_debug(hw->wiphy,
1619                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1620                     ctx->def.chan->center_freq, ctx->def.width,
1621                     ctx->def.center_freq1, ctx->def.center_freq2);
1622         hwsim_check_chanctx_magic(ctx);
1623         hwsim_clear_chanctx_magic(ctx);
1624 }
1625
1626 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1627                                           struct ieee80211_chanctx_conf *ctx,
1628                                           u32 changed)
1629 {
1630         hwsim_check_chanctx_magic(ctx);
1631         wiphy_debug(hw->wiphy,
1632                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1633                     ctx->def.chan->center_freq, ctx->def.width,
1634                     ctx->def.center_freq1, ctx->def.center_freq2);
1635 }
1636
1637 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1638                                              struct ieee80211_vif *vif,
1639                                              struct ieee80211_chanctx_conf *ctx)
1640 {
1641         hwsim_check_magic(vif);
1642         hwsim_check_chanctx_magic(ctx);
1643
1644         return 0;
1645 }
1646
1647 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1648                                                 struct ieee80211_vif *vif,
1649                                                 struct ieee80211_chanctx_conf *ctx)
1650 {
1651         hwsim_check_magic(vif);
1652         hwsim_check_chanctx_magic(ctx);
1653 }
1654
1655 static struct ieee80211_ops mac80211_hwsim_ops =
1656 {
1657         .tx = mac80211_hwsim_tx,
1658         .start = mac80211_hwsim_start,
1659         .stop = mac80211_hwsim_stop,
1660         .add_interface = mac80211_hwsim_add_interface,
1661         .change_interface = mac80211_hwsim_change_interface,
1662         .remove_interface = mac80211_hwsim_remove_interface,
1663         .config = mac80211_hwsim_config,
1664         .configure_filter = mac80211_hwsim_configure_filter,
1665         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1666         .sta_add = mac80211_hwsim_sta_add,
1667         .sta_remove = mac80211_hwsim_sta_remove,
1668         .sta_notify = mac80211_hwsim_sta_notify,
1669         .set_tim = mac80211_hwsim_set_tim,
1670         .conf_tx = mac80211_hwsim_conf_tx,
1671         .get_survey = mac80211_hwsim_get_survey,
1672         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1673         .ampdu_action = mac80211_hwsim_ampdu_action,
1674         .sw_scan_start = mac80211_hwsim_sw_scan,
1675         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1676         .flush = mac80211_hwsim_flush,
1677         .get_tsf = mac80211_hwsim_get_tsf,
1678         .set_tsf = mac80211_hwsim_set_tsf,
1679 };
1680
1681
1682 static void mac80211_hwsim_free(void)
1683 {
1684         struct list_head tmplist, *i, *tmp;
1685         struct mac80211_hwsim_data *data, *tmpdata;
1686
1687         INIT_LIST_HEAD(&tmplist);
1688
1689         spin_lock_bh(&hwsim_radio_lock);
1690         list_for_each_safe(i, tmp, &hwsim_radios)
1691                 list_move(i, &tmplist);
1692         spin_unlock_bh(&hwsim_radio_lock);
1693
1694         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1695                 debugfs_remove(data->debugfs_group);
1696                 debugfs_remove(data->debugfs_ps);
1697                 debugfs_remove(data->debugfs);
1698                 ieee80211_unregister_hw(data->hw);
1699                 device_release_driver(data->dev);
1700                 device_unregister(data->dev);
1701                 ieee80211_free_hw(data->hw);
1702         }
1703         class_destroy(hwsim_class);
1704 }
1705
1706
1707 static struct device_driver mac80211_hwsim_driver = {
1708         .name = "mac80211_hwsim",
1709         .bus = &platform_bus_type,
1710         .owner = THIS_MODULE,
1711 };
1712
1713 static const struct net_device_ops hwsim_netdev_ops = {
1714         .ndo_start_xmit         = hwsim_mon_xmit,
1715         .ndo_change_mtu         = eth_change_mtu,
1716         .ndo_set_mac_address    = eth_mac_addr,
1717         .ndo_validate_addr      = eth_validate_addr,
1718 };
1719
1720 static void hwsim_mon_setup(struct net_device *dev)
1721 {
1722         dev->netdev_ops = &hwsim_netdev_ops;
1723         dev->destructor = free_netdev;
1724         ether_setup(dev);
1725         dev->tx_queue_len = 0;
1726         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1727         memset(dev->dev_addr, 0, ETH_ALEN);
1728         dev->dev_addr[0] = 0x12;
1729 }
1730
1731
1732 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1733 {
1734         struct mac80211_hwsim_data *data = dat;
1735         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1736         struct sk_buff *skb;
1737         struct ieee80211_pspoll *pspoll;
1738
1739         if (!vp->assoc)
1740                 return;
1741
1742         wiphy_debug(data->hw->wiphy,
1743                     "%s: send PS-Poll to %pM for aid %d\n",
1744                     __func__, vp->bssid, vp->aid);
1745
1746         skb = dev_alloc_skb(sizeof(*pspoll));
1747         if (!skb)
1748                 return;
1749         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1750         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1751                                             IEEE80211_STYPE_PSPOLL |
1752                                             IEEE80211_FCTL_PM);
1753         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1754         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1755         memcpy(pspoll->ta, mac, ETH_ALEN);
1756
1757         rcu_read_lock();
1758         mac80211_hwsim_tx_frame(data->hw, skb,
1759                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1760         rcu_read_unlock();
1761 }
1762
1763 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1764                                 struct ieee80211_vif *vif, int ps)
1765 {
1766         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1767         struct sk_buff *skb;
1768         struct ieee80211_hdr *hdr;
1769
1770         if (!vp->assoc)
1771                 return;
1772
1773         wiphy_debug(data->hw->wiphy,
1774                     "%s: send data::nullfunc to %pM ps=%d\n",
1775                     __func__, vp->bssid, ps);
1776
1777         skb = dev_alloc_skb(sizeof(*hdr));
1778         if (!skb)
1779                 return;
1780         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1781         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1782                                          IEEE80211_STYPE_NULLFUNC |
1783                                          (ps ? IEEE80211_FCTL_PM : 0));
1784         hdr->duration_id = cpu_to_le16(0);
1785         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1786         memcpy(hdr->addr2, mac, ETH_ALEN);
1787         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1788
1789         rcu_read_lock();
1790         mac80211_hwsim_tx_frame(data->hw, skb,
1791                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1792         rcu_read_unlock();
1793 }
1794
1795
1796 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1797                                    struct ieee80211_vif *vif)
1798 {
1799         struct mac80211_hwsim_data *data = dat;
1800         hwsim_send_nullfunc(data, mac, vif, 1);
1801 }
1802
1803
1804 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1805                                       struct ieee80211_vif *vif)
1806 {
1807         struct mac80211_hwsim_data *data = dat;
1808         hwsim_send_nullfunc(data, mac, vif, 0);
1809 }
1810
1811
1812 static int hwsim_fops_ps_read(void *dat, u64 *val)
1813 {
1814         struct mac80211_hwsim_data *data = dat;
1815         *val = data->ps;
1816         return 0;
1817 }
1818
1819 static int hwsim_fops_ps_write(void *dat, u64 val)
1820 {
1821         struct mac80211_hwsim_data *data = dat;
1822         enum ps_mode old_ps;
1823
1824         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1825             val != PS_MANUAL_POLL)
1826                 return -EINVAL;
1827
1828         old_ps = data->ps;
1829         data->ps = val;
1830
1831         if (val == PS_MANUAL_POLL) {
1832                 ieee80211_iterate_active_interfaces(data->hw,
1833                                                     IEEE80211_IFACE_ITER_NORMAL,
1834                                                     hwsim_send_ps_poll, data);
1835                 data->ps_poll_pending = true;
1836         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1837                 ieee80211_iterate_active_interfaces(data->hw,
1838                                                     IEEE80211_IFACE_ITER_NORMAL,
1839                                                     hwsim_send_nullfunc_ps,
1840                                                     data);
1841         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1842                 ieee80211_iterate_active_interfaces(data->hw,
1843                                                     IEEE80211_IFACE_ITER_NORMAL,
1844                                                     hwsim_send_nullfunc_no_ps,
1845                                                     data);
1846         }
1847
1848         return 0;
1849 }
1850
1851 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1852                         "%llu\n");
1853
1854
1855 static int hwsim_fops_group_read(void *dat, u64 *val)
1856 {
1857         struct mac80211_hwsim_data *data = dat;
1858         *val = data->group;
1859         return 0;
1860 }
1861
1862 static int hwsim_fops_group_write(void *dat, u64 val)
1863 {
1864         struct mac80211_hwsim_data *data = dat;
1865         data->group = val;
1866         return 0;
1867 }
1868
1869 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1870                         hwsim_fops_group_read, hwsim_fops_group_write,
1871                         "%llx\n");
1872
1873 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1874                              struct mac_address *addr)
1875 {
1876         struct mac80211_hwsim_data *data;
1877         bool _found = false;
1878
1879         spin_lock_bh(&hwsim_radio_lock);
1880         list_for_each_entry(data, &hwsim_radios, list) {
1881                 if (memcmp(data->addresses[1].addr, addr,
1882                           sizeof(struct mac_address)) == 0) {
1883                         _found = true;
1884                         break;
1885                 }
1886         }
1887         spin_unlock_bh(&hwsim_radio_lock);
1888
1889         if (!_found)
1890                 return NULL;
1891
1892         return data;
1893 }
1894
1895 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1896                                            struct genl_info *info)
1897 {
1898
1899         struct ieee80211_hdr *hdr;
1900         struct mac80211_hwsim_data *data2;
1901         struct ieee80211_tx_info *txi;
1902         struct hwsim_tx_rate *tx_attempts;
1903         unsigned long ret_skb_ptr;
1904         struct sk_buff *skb, *tmp;
1905         struct mac_address *src;
1906         unsigned int hwsim_flags;
1907
1908         int i;
1909         bool found = false;
1910
1911         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1912            !info->attrs[HWSIM_ATTR_FLAGS] ||
1913            !info->attrs[HWSIM_ATTR_COOKIE] ||
1914            !info->attrs[HWSIM_ATTR_TX_INFO])
1915                 goto out;
1916
1917         src = (struct mac_address *)nla_data(
1918                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1919         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1920
1921         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1922
1923         data2 = get_hwsim_data_ref_from_addr(src);
1924
1925         if (data2 == NULL)
1926                 goto out;
1927
1928         /* look for the skb matching the cookie passed back from user */
1929         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1930                 if ((unsigned long)skb == ret_skb_ptr) {
1931                         skb_unlink(skb, &data2->pending);
1932                         found = true;
1933                         break;
1934                 }
1935         }
1936
1937         /* not found */
1938         if (!found)
1939                 goto out;
1940
1941         /* Tx info received because the frame was broadcasted on user space,
1942          so we get all the necessary info: tx attempts and skb control buff */
1943
1944         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1945                        info->attrs[HWSIM_ATTR_TX_INFO]);
1946
1947         /* now send back TX status */
1948         txi = IEEE80211_SKB_CB(skb);
1949
1950         ieee80211_tx_info_clear_status(txi);
1951
1952         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1953                 txi->status.rates[i].idx = tx_attempts[i].idx;
1954                 txi->status.rates[i].count = tx_attempts[i].count;
1955                 /*txi->status.rates[i].flags = 0;*/
1956         }
1957
1958         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1959
1960         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1961            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1962                 if (skb->len >= 16) {
1963                         hdr = (struct ieee80211_hdr *) skb->data;
1964                         mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
1965                                                    hdr->addr2);
1966                 }
1967                 txi->flags |= IEEE80211_TX_STAT_ACK;
1968         }
1969         ieee80211_tx_status_irqsafe(data2->hw, skb);
1970         return 0;
1971 out:
1972         return -EINVAL;
1973
1974 }
1975
1976 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1977                                           struct genl_info *info)
1978 {
1979
1980         struct mac80211_hwsim_data *data2;
1981         struct ieee80211_rx_status rx_status;
1982         struct mac_address *dst;
1983         int frame_data_len;
1984         char *frame_data;
1985         struct sk_buff *skb = NULL;
1986
1987         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1988             !info->attrs[HWSIM_ATTR_FRAME] ||
1989             !info->attrs[HWSIM_ATTR_RX_RATE] ||
1990             !info->attrs[HWSIM_ATTR_SIGNAL])
1991                 goto out;
1992
1993         dst = (struct mac_address *)nla_data(
1994                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1995
1996         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1997         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1998
1999         /* Allocate new skb here */
2000         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2001         if (skb == NULL)
2002                 goto err;
2003
2004         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
2005                 /* Copy the data */
2006                 memcpy(skb_put(skb, frame_data_len), frame_data,
2007                        frame_data_len);
2008         } else
2009                 goto err;
2010
2011         data2 = get_hwsim_data_ref_from_addr(dst);
2012
2013         if (data2 == NULL)
2014                 goto out;
2015
2016         /* check if radio is configured properly */
2017
2018         if (data2->idle || !data2->started)
2019                 goto out;
2020
2021         /*A frame is received from user space*/
2022         memset(&rx_status, 0, sizeof(rx_status));
2023         rx_status.freq = data2->channel->center_freq;
2024         rx_status.band = data2->channel->band;
2025         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2026         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2027
2028         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2029         ieee80211_rx_irqsafe(data2->hw, skb);
2030
2031         return 0;
2032 err:
2033         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2034         goto out;
2035 out:
2036         dev_kfree_skb(skb);
2037         return -EINVAL;
2038 }
2039
2040 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2041                                       struct genl_info *info)
2042 {
2043         if (info == NULL)
2044                 goto out;
2045
2046         wmediumd_portid = info->snd_portid;
2047
2048         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2049                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2050
2051         return 0;
2052 out:
2053         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2054         return -EINVAL;
2055 }
2056
2057 /* Generic Netlink operations array */
2058 static struct genl_ops hwsim_ops[] = {
2059         {
2060                 .cmd = HWSIM_CMD_REGISTER,
2061                 .policy = hwsim_genl_policy,
2062                 .doit = hwsim_register_received_nl,
2063                 .flags = GENL_ADMIN_PERM,
2064         },
2065         {
2066                 .cmd = HWSIM_CMD_FRAME,
2067                 .policy = hwsim_genl_policy,
2068                 .doit = hwsim_cloned_frame_received_nl,
2069         },
2070         {
2071                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2072                 .policy = hwsim_genl_policy,
2073                 .doit = hwsim_tx_info_frame_received_nl,
2074         },
2075 };
2076
2077 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2078                                          unsigned long state,
2079                                          void *_notify)
2080 {
2081         struct netlink_notify *notify = _notify;
2082
2083         if (state != NETLINK_URELEASE)
2084                 return NOTIFY_DONE;
2085
2086         if (notify->portid == wmediumd_portid) {
2087                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2088                        " socket, switching to perfect channel medium\n");
2089                 wmediumd_portid = 0;
2090         }
2091         return NOTIFY_DONE;
2092
2093 }
2094
2095 static struct notifier_block hwsim_netlink_notifier = {
2096         .notifier_call = mac80211_hwsim_netlink_notify,
2097 };
2098
2099 static int hwsim_init_netlink(void)
2100 {
2101         int rc;
2102
2103         /* userspace test API hasn't been adjusted for multi-channel */
2104         if (channels > 1)
2105                 return 0;
2106
2107         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2108
2109         rc = genl_register_family_with_ops(&hwsim_genl_family,
2110                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
2111         if (rc)
2112                 goto failure;
2113
2114         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2115         if (rc)
2116                 goto failure;
2117
2118         return 0;
2119
2120 failure:
2121         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2122         return -EINVAL;
2123 }
2124
2125 static void hwsim_exit_netlink(void)
2126 {
2127         int ret;
2128
2129         /* userspace test API hasn't been adjusted for multi-channel */
2130         if (channels > 1)
2131                 return;
2132
2133         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2134         /* unregister the notifier */
2135         netlink_unregister_notifier(&hwsim_netlink_notifier);
2136         /* unregister the family */
2137         ret = genl_unregister_family(&hwsim_genl_family);
2138         if (ret)
2139                 printk(KERN_DEBUG "mac80211_hwsim: "
2140                        "unregister family %i\n", ret);
2141 }
2142
2143 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2144         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2145         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2146                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2147 #ifdef CONFIG_MAC80211_MESH
2148                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2149 #endif
2150                                  BIT(NL80211_IFTYPE_AP) |
2151                                  BIT(NL80211_IFTYPE_P2P_GO) },
2152         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2153 };
2154
2155 static struct ieee80211_iface_combination hwsim_if_comb = {
2156         .limits = hwsim_if_limits,
2157         .n_limits = ARRAY_SIZE(hwsim_if_limits),
2158         .max_interfaces = 2048,
2159         .num_different_channels = 1,
2160 };
2161
2162 static int __init init_mac80211_hwsim(void)
2163 {
2164         int i, err = 0;
2165         u8 addr[ETH_ALEN];
2166         struct mac80211_hwsim_data *data;
2167         struct ieee80211_hw *hw;
2168         enum ieee80211_band band;
2169
2170         if (radios < 1 || radios > 100)
2171                 return -EINVAL;
2172
2173         if (channels < 1)
2174                 return -EINVAL;
2175
2176         if (channels > 1) {
2177                 hwsim_if_comb.num_different_channels = channels;
2178                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2179                 mac80211_hwsim_ops.cancel_hw_scan =
2180                         mac80211_hwsim_cancel_hw_scan;
2181                 mac80211_hwsim_ops.sw_scan_start = NULL;
2182                 mac80211_hwsim_ops.sw_scan_complete = NULL;
2183                 mac80211_hwsim_ops.remain_on_channel =
2184                         mac80211_hwsim_roc;
2185                 mac80211_hwsim_ops.cancel_remain_on_channel =
2186                         mac80211_hwsim_croc;
2187                 mac80211_hwsim_ops.add_chanctx =
2188                         mac80211_hwsim_add_chanctx;
2189                 mac80211_hwsim_ops.remove_chanctx =
2190                         mac80211_hwsim_remove_chanctx;
2191                 mac80211_hwsim_ops.change_chanctx =
2192                         mac80211_hwsim_change_chanctx;
2193                 mac80211_hwsim_ops.assign_vif_chanctx =
2194                         mac80211_hwsim_assign_vif_chanctx;
2195                 mac80211_hwsim_ops.unassign_vif_chanctx =
2196                         mac80211_hwsim_unassign_vif_chanctx;
2197         }
2198
2199         spin_lock_init(&hwsim_radio_lock);
2200         INIT_LIST_HEAD(&hwsim_radios);
2201
2202         err = driver_register(&mac80211_hwsim_driver);
2203         if (err)
2204                 return err;
2205
2206         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2207         if (IS_ERR(hwsim_class)) {
2208                 err = PTR_ERR(hwsim_class);
2209                 goto failed_unregister_driver;
2210         }
2211
2212         memset(addr, 0, ETH_ALEN);
2213         addr[0] = 0x02;
2214
2215         for (i = 0; i < radios; i++) {
2216                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2217                        i);
2218                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2219                 if (!hw) {
2220                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2221                                "failed\n");
2222                         err = -ENOMEM;
2223                         goto failed;
2224                 }
2225                 data = hw->priv;
2226                 data->hw = hw;
2227
2228                 data->dev = device_create(hwsim_class, NULL, 0, hw,
2229                                           "hwsim%d", i);
2230                 if (IS_ERR(data->dev)) {
2231                         printk(KERN_DEBUG
2232                                "mac80211_hwsim: device_create failed (%ld)\n",
2233                                PTR_ERR(data->dev));
2234                         err = -ENOMEM;
2235                         goto failed_drvdata;
2236                 }
2237                 data->dev->driver = &mac80211_hwsim_driver;
2238                 err = device_bind_driver(data->dev);
2239                 if (err != 0) {
2240                         printk(KERN_DEBUG
2241                                "mac80211_hwsim: device_bind_driver failed (%d)\n",
2242                                err);
2243                         goto failed_hw;
2244                 }
2245
2246                 skb_queue_head_init(&data->pending);
2247
2248                 SET_IEEE80211_DEV(hw, data->dev);
2249                 addr[3] = i >> 8;
2250                 addr[4] = i;
2251                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2252                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2253                 data->addresses[1].addr[0] |= 0x40;
2254                 hw->wiphy->n_addresses = 2;
2255                 hw->wiphy->addresses = data->addresses;
2256
2257                 hw->wiphy->iface_combinations = &hwsim_if_comb;
2258                 hw->wiphy->n_iface_combinations = 1;
2259
2260                 if (channels > 1) {
2261                         hw->wiphy->max_scan_ssids = 255;
2262                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2263                         hw->wiphy->max_remain_on_channel_duration = 1000;
2264                 }
2265
2266                 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2267                 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2268
2269                 hw->channel_change_time = 1;
2270                 hw->queues = 5;
2271                 hw->offchannel_tx_hw_queue = 4;
2272                 hw->wiphy->interface_modes =
2273                         BIT(NL80211_IFTYPE_STATION) |
2274                         BIT(NL80211_IFTYPE_AP) |
2275                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
2276                         BIT(NL80211_IFTYPE_P2P_GO) |
2277                         BIT(NL80211_IFTYPE_ADHOC) |
2278                         BIT(NL80211_IFTYPE_MESH_POINT) |
2279                         BIT(NL80211_IFTYPE_P2P_DEVICE);
2280
2281                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2282                             IEEE80211_HW_SIGNAL_DBM |
2283                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2284                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2285                             IEEE80211_HW_AMPDU_AGGREGATION |
2286                             IEEE80211_HW_WANT_MONITOR_VIF |
2287                             IEEE80211_HW_QUEUE_CONTROL;
2288
2289                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2290                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2291
2292                 /* ask mac80211 to reserve space for magic */
2293                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2294                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2295                 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2296
2297                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2298                         sizeof(hwsim_channels_2ghz));
2299                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2300                         sizeof(hwsim_channels_5ghz));
2301                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2302
2303                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2304                         struct ieee80211_supported_band *sband = &data->bands[band];
2305                         switch (band) {
2306                         case IEEE80211_BAND_2GHZ:
2307                                 sband->channels = data->channels_2ghz;
2308                                 sband->n_channels =
2309                                         ARRAY_SIZE(hwsim_channels_2ghz);
2310                                 sband->bitrates = data->rates;
2311                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2312                                 break;
2313                         case IEEE80211_BAND_5GHZ:
2314                                 sband->channels = data->channels_5ghz;
2315                                 sband->n_channels =
2316                                         ARRAY_SIZE(hwsim_channels_5ghz);
2317                                 sband->bitrates = data->rates + 4;
2318                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2319                                 break;
2320                         default:
2321                                 continue;
2322                         }
2323
2324                         sband->ht_cap.ht_supported = true;
2325                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2326                                 IEEE80211_HT_CAP_GRN_FLD |
2327                                 IEEE80211_HT_CAP_SGI_40 |
2328                                 IEEE80211_HT_CAP_DSSSCCK40;
2329                         sband->ht_cap.ampdu_factor = 0x3;
2330                         sband->ht_cap.ampdu_density = 0x6;
2331                         memset(&sband->ht_cap.mcs, 0,
2332                                sizeof(sband->ht_cap.mcs));
2333                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
2334                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
2335                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2336
2337                         hw->wiphy->bands[band] = sband;
2338
2339                         sband->vht_cap.vht_supported = true;
2340                         sband->vht_cap.cap =
2341                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2342                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2343                                 IEEE80211_VHT_CAP_RXLDPC |
2344                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2345                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2346                                 IEEE80211_VHT_CAP_TXSTBC |
2347                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2348                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2349                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2350                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2351                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2352                         sband->vht_cap.vht_mcs.rx_mcs_map =
2353                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2354                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2355                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2356                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2357                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2358                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2359                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2360                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2361                         sband->vht_cap.vht_mcs.tx_mcs_map =
2362                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2363                 }
2364                 /* By default all radios are belonging to the first group */
2365                 data->group = 1;
2366                 mutex_init(&data->mutex);
2367
2368                 /* Enable frame retransmissions for lossy channels */
2369                 hw->max_rates = 4;
2370                 hw->max_rate_tries = 11;
2371
2372                 /* Work to be done prior to ieee80211_register_hw() */
2373                 switch (regtest) {
2374                 case HWSIM_REGTEST_DISABLED:
2375                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2376                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2377                 case HWSIM_REGTEST_DIFF_COUNTRY:
2378                         /*
2379                          * Nothing to be done for driver regulatory domain
2380                          * hints prior to ieee80211_register_hw()
2381                          */
2382                         break;
2383                 case HWSIM_REGTEST_WORLD_ROAM:
2384                         if (i == 0) {
2385                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2386                                 wiphy_apply_custom_regulatory(hw->wiphy,
2387                                         &hwsim_world_regdom_custom_01);
2388                         }
2389                         break;
2390                 case HWSIM_REGTEST_CUSTOM_WORLD:
2391                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2392                         wiphy_apply_custom_regulatory(hw->wiphy,
2393                                 &hwsim_world_regdom_custom_01);
2394                         break;
2395                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2396                         if (i == 0) {
2397                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2398                                 wiphy_apply_custom_regulatory(hw->wiphy,
2399                                         &hwsim_world_regdom_custom_01);
2400                         } else if (i == 1) {
2401                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2402                                 wiphy_apply_custom_regulatory(hw->wiphy,
2403                                         &hwsim_world_regdom_custom_02);
2404                         }
2405                         break;
2406                 case HWSIM_REGTEST_STRICT_ALL:
2407                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2408                         break;
2409                 case HWSIM_REGTEST_STRICT_FOLLOW:
2410                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2411                         if (i == 0)
2412                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2413                         break;
2414                 case HWSIM_REGTEST_ALL:
2415                         if (i == 0) {
2416                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2417                                 wiphy_apply_custom_regulatory(hw->wiphy,
2418                                         &hwsim_world_regdom_custom_01);
2419                         } else if (i == 1) {
2420                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2421                                 wiphy_apply_custom_regulatory(hw->wiphy,
2422                                         &hwsim_world_regdom_custom_02);
2423                         } else if (i == 4)
2424                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2425                         break;
2426                 default:
2427                         break;
2428                 }
2429
2430                 /* give the regulatory workqueue a chance to run */
2431                 if (regtest)
2432                         schedule_timeout_interruptible(1);
2433                 err = ieee80211_register_hw(hw);
2434                 if (err < 0) {
2435                         printk(KERN_DEBUG "mac80211_hwsim: "
2436                                "ieee80211_register_hw failed (%d)\n", err);
2437                         goto failed_hw;
2438                 }
2439
2440                 /* Work to be done after to ieee80211_register_hw() */
2441                 switch (regtest) {
2442                 case HWSIM_REGTEST_WORLD_ROAM:
2443                 case HWSIM_REGTEST_DISABLED:
2444                         break;
2445                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2446                         if (!i)
2447                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2448                         break;
2449                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2450                 case HWSIM_REGTEST_STRICT_ALL:
2451                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2452                         break;
2453                 case HWSIM_REGTEST_DIFF_COUNTRY:
2454                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2455                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2456                         break;
2457                 case HWSIM_REGTEST_CUSTOM_WORLD:
2458                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2459                         /*
2460                          * Nothing to be done for custom world regulatory
2461                          * domains after to ieee80211_register_hw
2462                          */
2463                         break;
2464                 case HWSIM_REGTEST_STRICT_FOLLOW:
2465                         if (i == 0)
2466                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2467                         break;
2468                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2469                         if (i == 0)
2470                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2471                         else if (i == 1)
2472                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2473                         break;
2474                 case HWSIM_REGTEST_ALL:
2475                         if (i == 2)
2476                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2477                         else if (i == 3)
2478                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2479                         else if (i == 4)
2480                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2481                         break;
2482                 default:
2483                         break;
2484                 }
2485
2486                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2487                             hw->wiphy->perm_addr);
2488
2489                 data->debugfs = debugfs_create_dir("hwsim",
2490                                                    hw->wiphy->debugfsdir);
2491                 data->debugfs_ps = debugfs_create_file("ps", 0666,
2492                                                        data->debugfs, data,
2493                                                        &hwsim_fops_ps);
2494                 data->debugfs_group = debugfs_create_file("group", 0666,
2495                                                         data->debugfs, data,
2496                                                         &hwsim_fops_group);
2497
2498                 tasklet_hrtimer_init(&data->beacon_timer,
2499                                      mac80211_hwsim_beacon,
2500                                      CLOCK_REALTIME, HRTIMER_MODE_ABS);
2501
2502                 list_add_tail(&data->list, &hwsim_radios);
2503         }
2504
2505         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2506         if (hwsim_mon == NULL)
2507                 goto failed;
2508
2509         rtnl_lock();
2510
2511         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2512         if (err < 0)
2513                 goto failed_mon;
2514
2515
2516         err = register_netdevice(hwsim_mon);
2517         if (err < 0)
2518                 goto failed_mon;
2519
2520         rtnl_unlock();
2521
2522         err = hwsim_init_netlink();
2523         if (err < 0)
2524                 goto failed_nl;
2525
2526         return 0;
2527
2528 failed_nl:
2529         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2530         return err;
2531
2532 failed_mon:
2533         rtnl_unlock();
2534         free_netdev(hwsim_mon);
2535         mac80211_hwsim_free();
2536         return err;
2537
2538 failed_hw:
2539         device_unregister(data->dev);
2540 failed_drvdata:
2541         ieee80211_free_hw(hw);
2542 failed:
2543         mac80211_hwsim_free();
2544 failed_unregister_driver:
2545         driver_unregister(&mac80211_hwsim_driver);
2546         return err;
2547 }
2548 module_init(init_mac80211_hwsim);
2549
2550 static void __exit exit_mac80211_hwsim(void)
2551 {
2552         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2553
2554         hwsim_exit_netlink();
2555
2556         mac80211_hwsim_free();
2557         unregister_netdev(hwsim_mon);
2558         driver_unregister(&mac80211_hwsim_driver);
2559 }
2560 module_exit(exit_mac80211_hwsim);