drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/debugfs.h>
  29 #include <linux/module.h>
  30 #include <linux/ktime.h>
  31 #include <net/genetlink.h>
  32 #include "mac80211_hwsim.h"
  33
  34 #define WARN_QUEUE 100
  35 #define MAX_QUEUE 200
  36
  37 MODULE_AUTHOR("Jouni Malinen");
  38 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  39 MODULE_LICENSE("GPL");
  40
  41 static u32 wmediumd_portid;
  42
  43 static int radios = 2;
  44 module_param(radios, int, 0444);
  45 MODULE_PARM_DESC(radios, "Number of simulated radios");
  46
  47 static int channels = 1;
  48 module_param(channels, int, 0444);
  49 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  50
  51 static bool paged_rx = false;
  52 module_param(paged_rx, bool, 0644);
  53 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  54
  55 /**
  56  * enum hwsim_regtest - the type of regulatory tests we offer
  57  *
  58  * These are the different values you can use for the regtest
  59  * module parameter. This is useful to help test world roaming
  60  * and the driver regulatory_hint() call and combinations of these.
  61  * If you want to do specific alpha2 regulatory domain tests simply
  62  * use the userspace regulatory request as that will be respected as
  63  * well without the need of this module parameter. This is designed
  64  * only for testing the driver regulatory request, world roaming
  65  * and all possible combinations.
  66  *
  67  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  68  *      this is the default value.
  69  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  70  *      hint, only one driver regulatory hint will be sent as such the
  71  *      secondary radios are expected to follow.
  72  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  73  *      request with all radios reporting the same regulatory domain.
  74  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  75  *      different regulatory domains requests. Expected behaviour is for
  76  *      an intersection to occur but each device will still use their
  77  *      respective regulatory requested domains. Subsequent radios will
  78  *      use the resulting intersection.
  79  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  80  *      this by using a custom beacon-capable regulatory domain for the first
  81  *      radio. All other device world roam.
  82  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  83  *      domain requests. All radios will adhere to this custom world regulatory
  84  *      domain.
  85  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  86  *      domain requests. The first radio will adhere to the first custom world
  87  *      regulatory domain, the second one to the second custom world regulatory
  88  *      domain. All other devices will world roam.
  89  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  90  *      settings, only the first radio will send a regulatory domain request
  91  *      and use strict settings. The rest of the radios are expected to follow.
  92  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  93  *      settings. All radios will adhere to this.
  94  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  95  *      domain settings, combined with secondary driver regulatory domain
  96  *      settings. The first radio will get a strict regulatory domain setting
  97  *      using the first driver regulatory request and the second radio will use
  98  *      non-strict settings using the second driver regulatory request. All
  99  *      other devices should follow the intersection created between the
 100  *      first two.
 101  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 102  *      at least 6 radios for a complete test. We will test in this order:
 103  *      1 - driver custom world regulatory domain
 104  *      2 - second custom world regulatory domain
 105  *      3 - first driver regulatory domain request
 106  *      4 - second driver regulatory domain request
 107  *      5 - strict regulatory domain settings using the third driver regulatory
 108  *          domain request
 109  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 110  *                 regulatory requests.
 111  */
 112 enum hwsim_regtest {
 113         HWSIM_REGTEST_DISABLED = 0,
 114         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 115         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 116         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 117         HWSIM_REGTEST_WORLD_ROAM = 4,
 118         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 119         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 120         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 121         HWSIM_REGTEST_STRICT_ALL = 8,
 122         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 123         HWSIM_REGTEST_ALL = 10,
 124 };
 125
 126 /* Set to one of the HWSIM_REGTEST_* values above */
 127 static int regtest = HWSIM_REGTEST_DISABLED;
 128 module_param(regtest, int, 0444);
 129 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 130
 131 static const char *hwsim_alpha2s[] = {
 132         "FI",
 133         "AL",
 134         "US",
 135         "DE",
 136         "JP",
 137         "AL",
 138 };
 139
 140 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 141         .n_reg_rules = 4,
 142         .alpha2 =  "99",
 143         .reg_rules = {
 144                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 145                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 146                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 147                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 148         }
 149 };
 150
 151 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 152         .n_reg_rules = 2,
 153         .alpha2 =  "99",
 154         .reg_rules = {
 155                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 156                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 157                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 158         }
 159 };
 160
 161 struct hwsim_vif_priv {
 162         u32 magic;
 163         u8 bssid[ETH_ALEN];
 164         bool assoc;
 165         u16 aid;
 166 };
 167
 168 #define HWSIM_VIF_MAGIC 0x69537748
 169
 170 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 171 {
 172         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 173         WARN(vp->magic != HWSIM_VIF_MAGIC,
 174              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 175              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 176 }
 177
 178 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 179 {
 180         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 181         vp->magic = HWSIM_VIF_MAGIC;
 182 }
 183
 184 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 185 {
 186         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 187         vp->magic = 0;
 188 }
 189
 190 struct hwsim_sta_priv {
 191         u32 magic;
 192 };
 193
 194 #define HWSIM_STA_MAGIC 0x6d537749
 195
 196 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 197 {
 198         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 199         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 200 }
 201
 202 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 203 {
 204         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 205         sp->magic = HWSIM_STA_MAGIC;
 206 }
 207
 208 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 209 {
 210         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 211         sp->magic = 0;
 212 }
 213
 214 struct hwsim_chanctx_priv {
 215         u32 magic;
 216 };
 217
 218 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 219
 220 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 221 {
 222         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 223         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 224 }
 225
 226 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 227 {
 228         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 229         cp->magic = HWSIM_CHANCTX_MAGIC;
 230 }
 231
 232 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 233 {
 234         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 235         cp->magic = 0;
 236 }
 237
 238 static struct class *hwsim_class;
 239
 240 static struct net_device *hwsim_mon; /* global monitor netdev */
 241
 242 #define CHAN2G(_freq)  { \
 243         .band = IEEE80211_BAND_2GHZ, \
 244         .center_freq = (_freq), \
 245         .hw_value = (_freq), \
 246         .max_power = 20, \
 247 }
 248
 249 #define CHAN5G(_freq) { \
 250         .band = IEEE80211_BAND_5GHZ, \
 251         .center_freq = (_freq), \
 252         .hw_value = (_freq), \
 253         .max_power = 20, \
 254 }
 255
 256 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 257         CHAN2G(2412), /* Channel 1 */
 258         CHAN2G(2417), /* Channel 2 */
 259         CHAN2G(2422), /* Channel 3 */
 260         CHAN2G(2427), /* Channel 4 */
 261         CHAN2G(2432), /* Channel 5 */
 262         CHAN2G(2437), /* Channel 6 */
 263         CHAN2G(2442), /* Channel 7 */
 264         CHAN2G(2447), /* Channel 8 */
 265         CHAN2G(2452), /* Channel 9 */
 266         CHAN2G(2457), /* Channel 10 */
 267         CHAN2G(2462), /* Channel 11 */
 268         CHAN2G(2467), /* Channel 12 */
 269         CHAN2G(2472), /* Channel 13 */
 270         CHAN2G(2484), /* Channel 14 */
 271 };
 272
 273 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 274         CHAN5G(5180), /* Channel 36 */
 275         CHAN5G(5200), /* Channel 40 */
 276         CHAN5G(5220), /* Channel 44 */
 277         CHAN5G(5240), /* Channel 48 */
 278
 279         CHAN5G(5260), /* Channel 52 */
 280         CHAN5G(5280), /* Channel 56 */
 281         CHAN5G(5300), /* Channel 60 */
 282         CHAN5G(5320), /* Channel 64 */
 283
 284         CHAN5G(5500), /* Channel 100 */
 285         CHAN5G(5520), /* Channel 104 */
 286         CHAN5G(5540), /* Channel 108 */
 287         CHAN5G(5560), /* Channel 112 */
 288         CHAN5G(5580), /* Channel 116 */
 289         CHAN5G(5600), /* Channel 120 */
 290         CHAN5G(5620), /* Channel 124 */
 291         CHAN5G(5640), /* Channel 128 */
 292         CHAN5G(5660), /* Channel 132 */
 293         CHAN5G(5680), /* Channel 136 */
 294         CHAN5G(5700), /* Channel 140 */
 295
 296         CHAN5G(5745), /* Channel 149 */
 297         CHAN5G(5765), /* Channel 153 */
 298         CHAN5G(5785), /* Channel 157 */
 299         CHAN5G(5805), /* Channel 161 */
 300         CHAN5G(5825), /* Channel 165 */
 301 };
 302
 303 static const struct ieee80211_rate hwsim_rates[] = {
 304         { .bitrate = 10 },
 305         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 306         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 307         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 308         { .bitrate = 60 },
 309         { .bitrate = 90 },
 310         { .bitrate = 120 },
 311         { .bitrate = 180 },
 312         { .bitrate = 240 },
 313         { .bitrate = 360 },
 314         { .bitrate = 480 },
 315         { .bitrate = 540 }
 316 };
 317
 318 static spinlock_t hwsim_radio_lock;
 319 static struct list_head hwsim_radios;
 320
 321 struct mac80211_hwsim_data {
 322         struct list_head list;
 323         struct ieee80211_hw *hw;
 324         struct device *dev;
 325         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 326         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 327         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 328         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 329
 330         struct mac_address addresses[2];
 331
 332         struct ieee80211_channel *tmp_chan;
 333         struct delayed_work roc_done;
 334         struct delayed_work hw_scan;
 335         struct cfg80211_scan_request *hw_scan_request;
 336         struct ieee80211_vif *hw_scan_vif;
 337         int scan_chan_idx;
 338
 339         struct ieee80211_channel *channel;
 340         u64 beacon_int  /* beacon interval in us */;
 341         unsigned int rx_filter;
 342         bool started, idle, scanning;
 343         struct mutex mutex;
 344         struct tasklet_hrtimer beacon_timer;
 345         enum ps_mode {
 346                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 347         } ps;
 348         bool ps_poll_pending;
 349         struct dentry *debugfs;
 350         struct dentry *debugfs_ps;
 351
 352         struct sk_buff_head pending;    /* packets pending */
 353         /*
 354          * Only radios in the same group can communicate together (the
 355          * channel has to match too). Each bit represents a group. A
 356          * radio can be in more then one group.
 357          */
 358         u64 group;
 359         struct dentry *debugfs_group;
 360
 361         int power_level;
 362
 363         /* difference between this hw's clock and the real clock, in usecs */
 364         s64 tsf_offset;
 365         s64 bcn_delta;
 366         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 367         u64 abs_bcn_ts;
 368 };
 369
 370
 371 struct hwsim_radiotap_hdr {
 372         struct ieee80211_radiotap_header hdr;
 373         __le64 rt_tsft;
 374         u8 rt_flags;
 375         u8 rt_rate;
 376         __le16 rt_channel;
 377         __le16 rt_chbitmask;
 378 } __packed;
 379
 380 /* MAC80211_HWSIM netlinf family */
 381 static struct genl_family hwsim_genl_family = {
 382         .id = GENL_ID_GENERATE,
 383         .hdrsize = 0,
 384         .name = "MAC80211_HWSIM",
 385         .version = 1,
 386         .maxattr = HWSIM_ATTR_MAX,
 387 };
 388
 389 /* MAC80211_HWSIM netlink policy */
 390
 391 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 392         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 393                                        .len = 6*sizeof(u8) },
 394         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 395                                           .len = 6*sizeof(u8) },
 396         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 397                                .len = IEEE80211_MAX_DATA_LEN },
 398         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 399         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 400         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 401         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 402                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 403                                         struct hwsim_tx_rate)},
 404         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 405 };
 406
 407 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 408                                         struct net_device *dev)
 409 {
 410         /* TODO: allow packet injection */
 411         dev_kfree_skb(skb);
 412         return NETDEV_TX_OK;
 413 }
 414
 415 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 416 {
 417         return ktime_to_us(ktime_get_real());
 418 }
 419
 420 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 421 {
 422         u64 now = mac80211_hwsim_get_tsf_raw();
 423         return cpu_to_le64(now + data->tsf_offset);
 424 }
 425
 426 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 427                                   struct ieee80211_vif *vif)
 428 {
 429         struct mac80211_hwsim_data *data = hw->priv;
 430         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 431 }
 432
 433 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 434                 struct ieee80211_vif *vif, u64 tsf)
 435 {
 436         struct mac80211_hwsim_data *data = hw->priv;
 437         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 438         u32 bcn_int = data->beacon_int;
 439         s64 delta = tsf - now;
 440
 441         data->tsf_offset += delta;
 442         /* adjust after beaconing with new timestamp at old TBTT */
 443         data->bcn_delta = do_div(delta, bcn_int);
 444 }
 445
 446 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 447                                       struct sk_buff *tx_skb,
 448                                       struct ieee80211_channel *chan)
 449 {
 450         struct mac80211_hwsim_data *data = hw->priv;
 451         struct sk_buff *skb;
 452         struct hwsim_radiotap_hdr *hdr;
 453         u16 flags;
 454         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 455         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 456
 457         if (!netif_running(hwsim_mon))
 458                 return;
 459
 460         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 461         if (skb == NULL)
 462                 return;
 463
 464         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 465         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 466         hdr->hdr.it_pad = 0;
 467         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 468         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 469                                           (1 << IEEE80211_RADIOTAP_RATE) |
 470                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 471                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 472         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 473         hdr->rt_flags = 0;
 474         hdr->rt_rate = txrate->bitrate / 5;
 475         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 476         flags = IEEE80211_CHAN_2GHZ;
 477         if (txrate->flags & IEEE80211_RATE_ERP_G)
 478                 flags |= IEEE80211_CHAN_OFDM;
 479         else
 480                 flags |= IEEE80211_CHAN_CCK;
 481         hdr->rt_chbitmask = cpu_to_le16(flags);
 482
 483         skb->dev = hwsim_mon;
 484         skb_set_mac_header(skb, 0);
 485         skb->ip_summed = CHECKSUM_UNNECESSARY;
 486         skb->pkt_type = PACKET_OTHERHOST;
 487         skb->protocol = htons(ETH_P_802_2);
 488         memset(skb->cb, 0, sizeof(skb->cb));
 489         netif_rx(skb);
 490 }
 491
 492
 493 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 494                                        const u8 *addr)
 495 {
 496         struct sk_buff *skb;
 497         struct hwsim_radiotap_hdr *hdr;
 498         u16 flags;
 499         struct ieee80211_hdr *hdr11;
 500
 501         if (!netif_running(hwsim_mon))
 502                 return;
 503
 504         skb = dev_alloc_skb(100);
 505         if (skb == NULL)
 506                 return;
 507
 508         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 509         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 510         hdr->hdr.it_pad = 0;
 511         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 512         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 513                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 514         hdr->rt_flags = 0;
 515         hdr->rt_rate = 0;
 516         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 517         flags = IEEE80211_CHAN_2GHZ;
 518         hdr->rt_chbitmask = cpu_to_le16(flags);
 519
 520         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 521         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 522                                            IEEE80211_STYPE_ACK);
 523         hdr11->duration_id = cpu_to_le16(0);
 524         memcpy(hdr11->addr1, addr, ETH_ALEN);
 525
 526         skb->dev = hwsim_mon;
 527         skb_set_mac_header(skb, 0);
 528         skb->ip_summed = CHECKSUM_UNNECESSARY;
 529         skb->pkt_type = PACKET_OTHERHOST;
 530         skb->protocol = htons(ETH_P_802_2);
 531         memset(skb->cb, 0, sizeof(skb->cb));
 532         netif_rx(skb);
 533 }
 534
 535
 536 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 537                            struct sk_buff *skb)
 538 {
 539         switch (data->ps) {
 540         case PS_DISABLED:
 541                 return true;
 542         case PS_ENABLED:
 543                 return false;
 544         case PS_AUTO_POLL:
 545                 /* TODO: accept (some) Beacons by default and other frames only
 546                  * if pending PS-Poll has been sent */
 547                 return true;
 548         case PS_MANUAL_POLL:
 549                 /* Allow unicast frames to own address if there is a pending
 550                  * PS-Poll */
 551                 if (data->ps_poll_pending &&
 552                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 553                            ETH_ALEN) == 0) {
 554                         data->ps_poll_pending = false;
 555                         return true;
 556                 }
 557                 return false;
 558         }
 559
 560         return true;
 561 }
 562
 563
 564 struct mac80211_hwsim_addr_match_data {
 565         bool ret;
 566         const u8 *addr;
 567 };
 568
 569 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 570                                      struct ieee80211_vif *vif)
 571 {
 572         struct mac80211_hwsim_addr_match_data *md = data;
 573         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 574                 md->ret = true;
 575 }
 576
 577
 578 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 579                                       const u8 *addr)
 580 {
 581         struct mac80211_hwsim_addr_match_data md;
 582
 583         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 584                 return true;
 585
 586         md.ret = false;
 587         md.addr = addr;
 588         ieee80211_iterate_active_interfaces_atomic(data->hw,
 589                                                    IEEE80211_IFACE_ITER_NORMAL,
 590                                                    mac80211_hwsim_addr_iter,
 591                                                    &md);
 592
 593         return md.ret;
 594 }
 595
 596 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 597                                        struct sk_buff *my_skb,
 598                                        int dst_portid)
 599 {
 600         struct sk_buff *skb;
 601         struct mac80211_hwsim_data *data = hw->priv;
 602         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 603         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 604         void *msg_head;
 605         unsigned int hwsim_flags = 0;
 606         int i;
 607         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 608
 609         if (data->ps != PS_DISABLED)
 610                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 611         /* If the queue contains MAX_QUEUE skb's drop some */
 612         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 613                 /* Droping until WARN_QUEUE level */
 614                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 615                         skb_dequeue(&data->pending);
 616         }
 617
 618         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 619         if (skb == NULL)
 620                 goto nla_put_failure;
 621
 622         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 623                                HWSIM_CMD_FRAME);
 624         if (msg_head == NULL) {
 625                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 626                 goto nla_put_failure;
 627         }
 628
 629         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 630                     sizeof(struct mac_address), data->addresses[1].addr))
 631                 goto nla_put_failure;
 632
 633         /* We get the skb->data */
 634         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 635                 goto nla_put_failure;
 636
 637         /* We get the flags for this transmission, and we translate them to
 638            wmediumd flags  */
 639
 640         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 641                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 642
 643         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 644                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 645
 646         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 647                 goto nla_put_failure;
 648
 649         /* We get the tx control (rate and retries) info*/
 650
 651         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 652                 tx_attempts[i].idx = info->status.rates[i].idx;
 653                 tx_attempts[i].count = info->status.rates[i].count;
 654         }
 655
 656         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 657                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 658                     tx_attempts))
 659                 goto nla_put_failure;
 660
 661         /* We create a cookie to identify this skb */
 662         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 663                 goto nla_put_failure;
 664
 665         genlmsg_end(skb, msg_head);
 666         genlmsg_unicast(&init_net, skb, dst_portid);
 667
 668         /* Enqueue the packet */
 669         skb_queue_tail(&data->pending, my_skb);
 670         return;
 671
 672 nla_put_failure:
 673         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 674 }
 675
 676 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 677                                struct ieee80211_channel *c2)
 678 {
 679         if (!c1 || !c2)
 680                 return false;
 681
 682         return c1->center_freq == c2->center_freq;
 683 }
 684
 685 struct tx_iter_data {
 686         struct ieee80211_channel *channel;
 687         bool receive;
 688 };
 689
 690 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 691                                    struct ieee80211_vif *vif)
 692 {
 693         struct tx_iter_data *data = _data;
 694
 695         if (!vif->chanctx_conf)
 696                 return;
 697
 698         if (!hwsim_chans_compat(data->channel,
 699                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 700                 return;
 701
 702         data->receive = true;
 703 }
 704
 705 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 706                                           struct sk_buff *skb,
 707                                           struct ieee80211_channel *chan)
 708 {
 709         struct mac80211_hwsim_data *data = hw->priv, *data2;
 710         bool ack = false;
 711         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 712         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 713         struct ieee80211_rx_status rx_status;
 714         u64 now;
 715
 716         memset(&rx_status, 0, sizeof(rx_status));
 717         rx_status.flag |= RX_FLAG_MACTIME_START;
 718         rx_status.freq = chan->center_freq;
 719         rx_status.band = chan->band;
 720         rx_status.rate_idx = info->control.rates[0].idx;
 721         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 722                 rx_status.flag |= RX_FLAG_HT;
 723         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 724                 rx_status.flag |= RX_FLAG_40MHZ;
 725         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 726                 rx_status.flag |= RX_FLAG_SHORT_GI;
 727         /* TODO: simulate real signal strength (and optional packet loss) */
 728         rx_status.signal = data->power_level - 50;
 729
 730         if (data->ps != PS_DISABLED)
 731                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 732
 733         /* release the skb's source info */
 734         skb_orphan(skb);
 735         skb_dst_drop(skb);
 736         skb->mark = 0;
 737         secpath_reset(skb);
 738         nf_reset(skb);
 739
 740         /*
 741          * Get absolute mactime here so all HWs RX at the "same time", and
 742          * absolute TX time for beacon mactime so the timestamp matches.
 743          * Giving beacons a different mactime than non-beacons looks messy, but
 744          * it helps the Toffset be exact and a ~10us mactime discrepancy
 745          * probably doesn't really matter.
 746          */
 747         if (ieee80211_is_beacon(hdr->frame_control) ||
 748             ieee80211_is_probe_resp(hdr->frame_control))
 749                 now = data->abs_bcn_ts;
 750         else
 751                 now = mac80211_hwsim_get_tsf_raw();
 752
 753         /* Copy skb to all enabled radios that are on the current frequency */
 754         spin_lock(&hwsim_radio_lock);
 755         list_for_each_entry(data2, &hwsim_radios, list) {
 756                 struct sk_buff *nskb;
 757                 struct tx_iter_data tx_iter_data = {
 758                         .receive = false,
 759                         .channel = chan,
 760                 };
 761
 762                 if (data == data2)
 763                         continue;
 764
 765                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 766                     !hwsim_ps_rx_ok(data2, skb))
 767                         continue;
 768
 769                 if (!(data->group & data2->group))
 770                         continue;
 771
 772                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 773                     !hwsim_chans_compat(chan, data2->channel)) {
 774                         ieee80211_iterate_active_interfaces_atomic(
 775                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 776                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 777                         if (!tx_iter_data.receive)
 778                                 continue;
 779                 }
 780
 781                 /*
 782                  * reserve some space for our vendor and the normal
 783                  * radiotap header, since we're copying anyway
 784                  */
 785                 if (skb->len < PAGE_SIZE && paged_rx) {
 786                         struct page *page = alloc_page(GFP_ATOMIC);
 787
 788                         if (!page)
 789                                 continue;
 790
 791                         nskb = dev_alloc_skb(128);
 792                         if (!nskb) {
 793                                 __free_page(page);
 794                                 continue;
 795                         }
 796
 797                         memcpy(page_address(page), skb->data, skb->len);
 798                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 799                 } else {
 800                         nskb = skb_copy(skb, GFP_ATOMIC);
 801                         if (!nskb)
 802                                 continue;
 803                 }
 804
 805                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 806                         ack = true;
 807
 808                 rx_status.mactime = now + data2->tsf_offset;
 809 #if 0
 810                 /*
 811                  * Don't enable this code by default as the OUI 00:00:00
 812                  * is registered to Xerox so we shouldn't use it here, it
 813                  * might find its way into pcap files.
 814                  * Note that this code requires the headroom in the SKB
 815                  * that was allocated earlier.
 816                  */
 817                 rx_status.vendor_radiotap_oui[0] = 0x00;
 818                 rx_status.vendor_radiotap_oui[1] = 0x00;
 819                 rx_status.vendor_radiotap_oui[2] = 0x00;
 820                 rx_status.vendor_radiotap_subns = 127;
 821                 /*
 822                  * Radiotap vendor namespaces can (and should) also be
 823                  * split into fields by using the standard radiotap
 824                  * presence bitmap mechanism. Use just BIT(0) here for
 825                  * the presence bitmap.
 826                  */
 827                 rx_status.vendor_radiotap_bitmap = BIT(0);
 828                 /* We have 8 bytes of (dummy) data */
 829                 rx_status.vendor_radiotap_len = 8;
 830                 /* For testing, also require it to be aligned */
 831                 rx_status.vendor_radiotap_align = 8;
 832                 /* push the data */
 833                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 834 #endif
 835
 836                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 837                 ieee80211_rx_irqsafe(data2->hw, nskb);
 838         }
 839         spin_unlock(&hwsim_radio_lock);
 840
 841         return ack;
 842 }
 843
 844 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 845                               struct ieee80211_tx_control *control,
 846                               struct sk_buff *skb)
 847 {
 848         struct mac80211_hwsim_data *data = hw->priv;
 849         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 850         struct ieee80211_chanctx_conf *chanctx_conf;
 851         struct ieee80211_channel *channel;
 852         bool ack;
 853         u32 _portid;
 854
 855         if (WARN_ON(skb->len < 10)) {
 856                 /* Should not happen; just a sanity check for addr1 use */
 857                 dev_kfree_skb(skb);
 858                 return;
 859         }
 860
 861         if (channels == 1) {
 862                 channel = data->channel;
 863         } else if (txi->hw_queue == 4) {
 864                 channel = data->tmp_chan;
 865         } else {
 866                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 867                 if (chanctx_conf)
 868                         channel = chanctx_conf->def.chan;
 869                 else
 870                         channel = NULL;
 871         }
 872
 873         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 874                 dev_kfree_skb(skb);
 875                 return;
 876         }
 877
 878         if (data->idle && !data->tmp_chan) {
 879                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 880                 dev_kfree_skb(skb);
 881                 return;
 882         }
 883
 884         if (txi->control.vif)
 885                 hwsim_check_magic(txi->control.vif);
 886         if (control->sta)
 887                 hwsim_check_sta_magic(control->sta);
 888
 889         txi->rate_driver_data[0] = channel;
 890
 891         mac80211_hwsim_monitor_rx(hw, skb, channel);
 892
 893         /* wmediumd mode check */
 894         _portid = ACCESS_ONCE(wmediumd_portid);
 895
 896         if (_portid)
 897                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 898
 899         /* NO wmediumd detected, perfect medium simulation */
 900         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 901
 902         if (ack && skb->len >= 16) {
 903                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 904                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 905         }
 906
 907         ieee80211_tx_info_clear_status(txi);
 908
 909         /* frame was transmitted at most favorable rate at first attempt */
 910         txi->control.rates[0].count = 1;
 911         txi->control.rates[1].idx = -1;
 912
 913         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 914                 txi->flags |= IEEE80211_TX_STAT_ACK;
 915         ieee80211_tx_status_irqsafe(hw, skb);
 916 }
 917
 918
 919 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 920 {
 921         struct mac80211_hwsim_data *data = hw->priv;
 922         wiphy_debug(hw->wiphy, "%s\n", __func__);
 923         data->started = true;
 924         return 0;
 925 }
 926
 927
 928 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 929 {
 930         struct mac80211_hwsim_data *data = hw->priv;
 931         data->started = false;
 932         tasklet_hrtimer_cancel(&data->beacon_timer);
 933         wiphy_debug(hw->wiphy, "%s\n", __func__);
 934 }
 935
 936
 937 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 938                                         struct ieee80211_vif *vif)
 939 {
 940         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 941                     __func__, ieee80211_vif_type_p2p(vif),
 942                     vif->addr);
 943         hwsim_set_magic(vif);
 944
 945         vif->cab_queue = 0;
 946         vif->hw_queue[IEEE80211_AC_VO] = 0;
 947         vif->hw_queue[IEEE80211_AC_VI] = 1;
 948         vif->hw_queue[IEEE80211_AC_BE] = 2;
 949         vif->hw_queue[IEEE80211_AC_BK] = 3;
 950
 951         return 0;
 952 }
 953
 954
 955 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 956                                            struct ieee80211_vif *vif,
 957                                            enum nl80211_iftype newtype,
 958                                            bool newp2p)
 959 {
 960         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 961         wiphy_debug(hw->wiphy,
 962                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 963                     __func__, ieee80211_vif_type_p2p(vif),
 964                     newtype, vif->addr);
 965         hwsim_check_magic(vif);
 966
 967         return 0;
 968 }
 969
 970 static void mac80211_hwsim_remove_interface(
 971         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 972 {
 973         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 974                     __func__, ieee80211_vif_type_p2p(vif),
 975                     vif->addr);
 976         hwsim_check_magic(vif);
 977         hwsim_clear_magic(vif);
 978 }
 979
 980 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 981                                     struct sk_buff *skb,
 982                                     struct ieee80211_channel *chan)
 983 {
 984         u32 _pid = ACCESS_ONCE(wmediumd_portid);
 985
 986         mac80211_hwsim_monitor_rx(hw, skb, chan);
 987
 988         if (_pid)
 989                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 990
 991         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
 992         dev_kfree_skb(skb);
 993 }
 994
 995 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 996                                      struct ieee80211_vif *vif)
 997 {
 998         struct mac80211_hwsim_data *data = arg;
 999         struct ieee80211_hw *hw = data->hw;
1000         struct ieee80211_tx_info *info;
1001         struct ieee80211_rate *txrate;
1002         struct ieee80211_mgmt *mgmt;
1003         struct sk_buff *skb;
1004
1005         hwsim_check_magic(vif);
1006
1007         if (vif->type != NL80211_IFTYPE_AP &&
1008             vif->type != NL80211_IFTYPE_MESH_POINT &&
1009             vif->type != NL80211_IFTYPE_ADHOC)
1010                 return;
1011
1012         skb = ieee80211_beacon_get(hw, vif);
1013         if (skb == NULL)
1014                 return;
1015         info = IEEE80211_SKB_CB(skb);
1016         txrate = ieee80211_get_tx_rate(hw, info);
1017
1018         mgmt = (struct ieee80211_mgmt *) skb->data;
1019         /* fake header transmission time */
1020         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1021         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1022                                                data->tsf_offset +
1023                                                24 * 8 * 10 / txrate->bitrate);
1024
1025         mac80211_hwsim_tx_frame(hw, skb,
1026                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1027 }
1028
1029 static enum hrtimer_restart
1030 mac80211_hwsim_beacon(struct hrtimer *timer)
1031 {
1032         struct mac80211_hwsim_data *data =
1033                 container_of(timer, struct mac80211_hwsim_data,
1034                              beacon_timer.timer);
1035         struct ieee80211_hw *hw = data->hw;
1036         u64 bcn_int = data->beacon_int;
1037         ktime_t next_bcn;
1038
1039         if (!data->started)
1040                 goto out;
1041
1042         ieee80211_iterate_active_interfaces_atomic(
1043                 hw, IEEE80211_IFACE_ITER_NORMAL,
1044                 mac80211_hwsim_beacon_tx, data);
1045
1046         /* beacon at new TBTT + beacon interval */
1047         if (data->bcn_delta) {
1048                 bcn_int -= data->bcn_delta;
1049                 data->bcn_delta = 0;
1050         }
1051
1052         next_bcn = ktime_add(hrtimer_get_expires(timer),
1053                              ns_to_ktime(bcn_int * 1000));
1054         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1055 out:
1056         return HRTIMER_NORESTART;
1057 }
1058
1059 static const char *hwsim_chantypes[] = {
1060         [NL80211_CHAN_NO_HT] = "noht",
1061         [NL80211_CHAN_HT20] = "ht20",
1062         [NL80211_CHAN_HT40MINUS] = "ht40-",
1063         [NL80211_CHAN_HT40PLUS] = "ht40+",
1064 };
1065
1066 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1067 {
1068         struct mac80211_hwsim_data *data = hw->priv;
1069         struct ieee80211_conf *conf = &hw->conf;
1070         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1071                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1072                 [IEEE80211_SMPS_OFF] = "off",
1073                 [IEEE80211_SMPS_STATIC] = "static",
1074                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1075         };
1076
1077         wiphy_debug(hw->wiphy,
1078                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
1079                     __func__,
1080                     conf->channel ? conf->channel->center_freq : 0,
1081                     hwsim_chantypes[conf->channel_type],
1082                     !!(conf->flags & IEEE80211_CONF_IDLE),
1083                     !!(conf->flags & IEEE80211_CONF_PS),
1084                     smps_modes[conf->smps_mode]);
1085
1086         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1087
1088         data->channel = conf->channel;
1089
1090         WARN_ON(data->channel && channels > 1);
1091
1092         data->power_level = conf->power_level;
1093         if (!data->started || !data->beacon_int)
1094                 tasklet_hrtimer_cancel(&data->beacon_timer);
1095         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1096                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1097                 u32 bcn_int = data->beacon_int;
1098                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1099
1100                 tasklet_hrtimer_start(&data->beacon_timer,
1101                                       ns_to_ktime(until_tbtt * 1000),
1102                                       HRTIMER_MODE_REL);
1103         }
1104
1105         return 0;
1106 }
1107
1108
1109 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1110                                             unsigned int changed_flags,
1111                                             unsigned int *total_flags,u64 multicast)
1112 {
1113         struct mac80211_hwsim_data *data = hw->priv;
1114
1115         wiphy_debug(hw->wiphy, "%s\n", __func__);
1116
1117         data->rx_filter = 0;
1118         if (*total_flags & FIF_PROMISC_IN_BSS)
1119                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1120         if (*total_flags & FIF_ALLMULTI)
1121                 data->rx_filter |= FIF_ALLMULTI;
1122
1123         *total_flags = data->rx_filter;
1124 }
1125
1126 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1127                                             struct ieee80211_vif *vif,
1128                                             struct ieee80211_bss_conf *info,
1129                                             u32 changed)
1130 {
1131         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1132         struct mac80211_hwsim_data *data = hw->priv;
1133
1134         hwsim_check_magic(vif);
1135
1136         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
1137
1138         if (changed & BSS_CHANGED_BSSID) {
1139                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1140                             __func__, info->bssid);
1141                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1142         }
1143
1144         if (changed & BSS_CHANGED_ASSOC) {
1145                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1146                             info->assoc, info->aid);
1147                 vp->assoc = info->assoc;
1148                 vp->aid = info->aid;
1149         }
1150
1151         if (changed & BSS_CHANGED_BEACON_INT) {
1152                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1153                 data->beacon_int = info->beacon_int * 1024;
1154         }
1155
1156         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1157                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1158                 if (data->started &&
1159                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1160                     info->enable_beacon) {
1161                         u64 tsf, until_tbtt;
1162                         u32 bcn_int;
1163                         if (WARN_ON(!data->beacon_int))
1164                                 data->beacon_int = 1000 * 1024;
1165                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1166                         bcn_int = data->beacon_int;
1167                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1168                         tasklet_hrtimer_start(&data->beacon_timer,
1169                                               ns_to_ktime(until_tbtt * 1000),
1170                                               HRTIMER_MODE_REL);
1171                 } else if (!info->enable_beacon)
1172                         tasklet_hrtimer_cancel(&data->beacon_timer);
1173         }
1174
1175         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1176                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1177                             info->use_cts_prot);
1178         }
1179
1180         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1181                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1182                             info->use_short_preamble);
1183         }
1184
1185         if (changed & BSS_CHANGED_ERP_SLOT) {
1186                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1187         }
1188
1189         if (changed & BSS_CHANGED_HT) {
1190                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1191                             info->ht_operation_mode);
1192         }
1193
1194         if (changed & BSS_CHANGED_BASIC_RATES) {
1195                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1196                             (unsigned long long) info->basic_rates);
1197         }
1198
1199         if (changed & BSS_CHANGED_TXPOWER)
1200                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1201 }
1202
1203 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1204                                   struct ieee80211_vif *vif,
1205                                   struct ieee80211_sta *sta)
1206 {
1207         hwsim_check_magic(vif);
1208         hwsim_set_sta_magic(sta);
1209
1210         return 0;
1211 }
1212
1213 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1214                                      struct ieee80211_vif *vif,
1215                                      struct ieee80211_sta *sta)
1216 {
1217         hwsim_check_magic(vif);
1218         hwsim_clear_sta_magic(sta);
1219
1220         return 0;
1221 }
1222
1223 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1224                                       struct ieee80211_vif *vif,
1225                                       enum sta_notify_cmd cmd,
1226                                       struct ieee80211_sta *sta)
1227 {
1228         hwsim_check_magic(vif);
1229
1230         switch (cmd) {
1231         case STA_NOTIFY_SLEEP:
1232         case STA_NOTIFY_AWAKE:
1233                 /* TODO: make good use of these flags */
1234                 break;
1235         default:
1236                 WARN(1, "Invalid sta notify: %d\n", cmd);
1237                 break;
1238         }
1239 }
1240
1241 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1242                                   struct ieee80211_sta *sta,
1243                                   bool set)
1244 {
1245         hwsim_check_sta_magic(sta);
1246         return 0;
1247 }
1248
1249 static int mac80211_hwsim_conf_tx(
1250         struct ieee80211_hw *hw,
1251         struct ieee80211_vif *vif, u16 queue,
1252         const struct ieee80211_tx_queue_params *params)
1253 {
1254         wiphy_debug(hw->wiphy,
1255                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1256                     __func__, queue,
1257                     params->txop, params->cw_min,
1258                     params->cw_max, params->aifs);
1259         return 0;
1260 }
1261
1262 static int mac80211_hwsim_get_survey(
1263         struct ieee80211_hw *hw, int idx,
1264         struct survey_info *survey)
1265 {
1266         struct ieee80211_conf *conf = &hw->conf;
1267
1268         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1269
1270         if (idx != 0)
1271                 return -ENOENT;
1272
1273         /* Current channel */
1274         survey->channel = conf->channel;
1275
1276         /*
1277          * Magically conjured noise level --- this is only ok for simulated hardware.
1278          *
1279          * A real driver which cannot determine the real channel noise MUST NOT
1280          * report any noise, especially not a magically conjured one :-)
1281          */
1282         survey->filled = SURVEY_INFO_NOISE_DBM;
1283         survey->noise = -92;
1284
1285         return 0;
1286 }
1287
1288 #ifdef CONFIG_NL80211_TESTMODE
1289 /*
1290  * This section contains example code for using netlink
1291  * attributes with the testmode command in nl80211.
1292  */
1293
1294 /* These enums need to be kept in sync with userspace */
1295 enum hwsim_testmode_attr {
1296         __HWSIM_TM_ATTR_INVALID = 0,
1297         HWSIM_TM_ATTR_CMD       = 1,
1298         HWSIM_TM_ATTR_PS        = 2,
1299
1300         /* keep last */
1301         __HWSIM_TM_ATTR_AFTER_LAST,
1302         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1303 };
1304
1305 enum hwsim_testmode_cmd {
1306         HWSIM_TM_CMD_SET_PS             = 0,
1307         HWSIM_TM_CMD_GET_PS             = 1,
1308         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1309         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1310 };
1311
1312 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1313         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1314         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1315 };
1316
1317 static int hwsim_fops_ps_write(void *dat, u64 val);
1318
1319 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1320                                        void *data, int len)
1321 {
1322         struct mac80211_hwsim_data *hwsim = hw->priv;
1323         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1324         struct sk_buff *skb;
1325         int err, ps;
1326
1327         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1328                         hwsim_testmode_policy);
1329         if (err)
1330                 return err;
1331
1332         if (!tb[HWSIM_TM_ATTR_CMD])
1333                 return -EINVAL;
1334
1335         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1336         case HWSIM_TM_CMD_SET_PS:
1337                 if (!tb[HWSIM_TM_ATTR_PS])
1338                         return -EINVAL;
1339                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1340                 return hwsim_fops_ps_write(hwsim, ps);
1341         case HWSIM_TM_CMD_GET_PS:
1342                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1343                                                 nla_total_size(sizeof(u32)));
1344                 if (!skb)
1345                         return -ENOMEM;
1346                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1347                         goto nla_put_failure;
1348                 return cfg80211_testmode_reply(skb);
1349         case HWSIM_TM_CMD_STOP_QUEUES:
1350                 ieee80211_stop_queues(hw);
1351                 return 0;
1352         case HWSIM_TM_CMD_WAKE_QUEUES:
1353                 ieee80211_wake_queues(hw);
1354                 return 0;
1355         default:
1356                 return -EOPNOTSUPP;
1357         }
1358
1359  nla_put_failure:
1360         kfree_skb(skb);
1361         return -ENOBUFS;
1362 }
1363 #endif
1364
1365 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1366                                        struct ieee80211_vif *vif,
1367                                        enum ieee80211_ampdu_mlme_action action,
1368                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1369                                        u8 buf_size)
1370 {
1371         switch (action) {
1372         case IEEE80211_AMPDU_TX_START:
1373                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1374                 break;
1375         case IEEE80211_AMPDU_TX_STOP_CONT:
1376         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1377         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1378                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1379                 break;
1380         case IEEE80211_AMPDU_TX_OPERATIONAL:
1381                 break;
1382         case IEEE80211_AMPDU_RX_START:
1383         case IEEE80211_AMPDU_RX_STOP:
1384                 break;
1385         default:
1386                 return -EOPNOTSUPP;
1387         }
1388
1389         return 0;
1390 }
1391
1392 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1393 {
1394         /* Not implemented, queues only on kernel side */
1395 }
1396
1397 static void hw_scan_work(struct work_struct *work)
1398 {
1399         struct mac80211_hwsim_data *hwsim =
1400                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1401         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1402         int dwell, i;
1403
1404         mutex_lock(&hwsim->mutex);
1405         if (hwsim->scan_chan_idx >= req->n_channels) {
1406                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1407                 ieee80211_scan_completed(hwsim->hw, false);
1408                 hwsim->hw_scan_request = NULL;
1409                 hwsim->hw_scan_vif = NULL;
1410                 hwsim->tmp_chan = NULL;
1411                 mutex_unlock(&hwsim->mutex);
1412                 return;
1413         }
1414
1415         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1416                     req->channels[hwsim->scan_chan_idx]->center_freq);
1417
1418         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1419         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
1420             !req->n_ssids) {
1421                 dwell = 120;
1422         } else {
1423                 dwell = 30;
1424                 /* send probes */
1425                 for (i = 0; i < req->n_ssids; i++) {
1426                         struct sk_buff *probe;
1427
1428                         probe = ieee80211_probereq_get(hwsim->hw,
1429                                                        hwsim->hw_scan_vif,
1430                                                        req->ssids[i].ssid,
1431                                                        req->ssids[i].ssid_len,
1432                                                        req->ie_len);
1433                         if (!probe)
1434                                 continue;
1435
1436                         if (req->ie_len)
1437                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1438                                        req->ie_len);
1439
1440                         local_bh_disable();
1441                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1442                                                 hwsim->tmp_chan);
1443                         local_bh_enable();
1444                 }
1445         }
1446         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1447                                      msecs_to_jiffies(dwell));
1448         hwsim->scan_chan_idx++;
1449         mutex_unlock(&hwsim->mutex);
1450 }
1451
1452 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1453                                   struct ieee80211_vif *vif,
1454                                   struct cfg80211_scan_request *req)
1455 {
1456         struct mac80211_hwsim_data *hwsim = hw->priv;
1457
1458         mutex_lock(&hwsim->mutex);
1459         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1460                 mutex_unlock(&hwsim->mutex);
1461                 return -EBUSY;
1462         }
1463         hwsim->hw_scan_request = req;
1464         hwsim->hw_scan_vif = vif;
1465         hwsim->scan_chan_idx = 0;
1466         mutex_unlock(&hwsim->mutex);
1467
1468         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1469
1470         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1471
1472         return 0;
1473 }
1474
1475 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1476                                           struct ieee80211_vif *vif)
1477 {
1478         struct mac80211_hwsim_data *hwsim = hw->priv;
1479
1480         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1481
1482         cancel_delayed_work_sync(&hwsim->hw_scan);
1483
1484         mutex_lock(&hwsim->mutex);
1485         ieee80211_scan_completed(hwsim->hw, true);
1486         hwsim->tmp_chan = NULL;
1487         hwsim->hw_scan_request = NULL;
1488         hwsim->hw_scan_vif = NULL;
1489         mutex_unlock(&hwsim->mutex);
1490 }
1491
1492 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1493 {
1494         struct mac80211_hwsim_data *hwsim = hw->priv;
1495
1496         mutex_lock(&hwsim->mutex);
1497
1498         if (hwsim->scanning) {
1499                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1500                 goto out;
1501         }
1502
1503         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1504         hwsim->scanning = true;
1505
1506 out:
1507         mutex_unlock(&hwsim->mutex);
1508 }
1509
1510 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1511 {
1512         struct mac80211_hwsim_data *hwsim = hw->priv;
1513
1514         mutex_lock(&hwsim->mutex);
1515
1516         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1517         hwsim->scanning = false;
1518
1519         mutex_unlock(&hwsim->mutex);
1520 }
1521
1522 static void hw_roc_done(struct work_struct *work)
1523 {
1524         struct mac80211_hwsim_data *hwsim =
1525                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1526
1527         mutex_lock(&hwsim->mutex);
1528         ieee80211_remain_on_channel_expired(hwsim->hw);
1529         hwsim->tmp_chan = NULL;
1530         mutex_unlock(&hwsim->mutex);
1531
1532         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1533 }
1534
1535 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1536                               struct ieee80211_vif *vif,
1537                               struct ieee80211_channel *chan,
1538                               int duration,
1539                               enum ieee80211_roc_type type)
1540 {
1541         struct mac80211_hwsim_data *hwsim = hw->priv;
1542
1543         mutex_lock(&hwsim->mutex);
1544         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1545                 mutex_unlock(&hwsim->mutex);
1546                 return -EBUSY;
1547         }
1548
1549         hwsim->tmp_chan = chan;
1550         mutex_unlock(&hwsim->mutex);
1551
1552         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1553                     chan->center_freq, duration);
1554
1555         ieee80211_ready_on_channel(hw);
1556
1557         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1558                                      msecs_to_jiffies(duration));
1559         return 0;
1560 }
1561
1562 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1563 {
1564         struct mac80211_hwsim_data *hwsim = hw->priv;
1565
1566         cancel_delayed_work_sync(&hwsim->roc_done);
1567
1568         mutex_lock(&hwsim->mutex);
1569         hwsim->tmp_chan = NULL;
1570         mutex_unlock(&hwsim->mutex);
1571
1572         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1573
1574         return 0;
1575 }
1576
1577 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1578                                       struct ieee80211_chanctx_conf *ctx)
1579 {
1580         hwsim_set_chanctx_magic(ctx);
1581         wiphy_debug(hw->wiphy,
1582                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1583                     ctx->def.chan->center_freq, ctx->def.width,
1584                     ctx->def.center_freq1, ctx->def.center_freq2);
1585         return 0;
1586 }
1587
1588 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1589                                           struct ieee80211_chanctx_conf *ctx)
1590 {
1591         wiphy_debug(hw->wiphy,
1592                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1593                     ctx->def.chan->center_freq, ctx->def.width,
1594                     ctx->def.center_freq1, ctx->def.center_freq2);
1595         hwsim_check_chanctx_magic(ctx);
1596         hwsim_clear_chanctx_magic(ctx);
1597 }
1598
1599 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1600                                           struct ieee80211_chanctx_conf *ctx,
1601                                           u32 changed)
1602 {
1603         hwsim_check_chanctx_magic(ctx);
1604         wiphy_debug(hw->wiphy,
1605                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1606                     ctx->def.chan->center_freq, ctx->def.width,
1607                     ctx->def.center_freq1, ctx->def.center_freq2);
1608 }
1609
1610 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1611                                              struct ieee80211_vif *vif,
1612                                              struct ieee80211_chanctx_conf *ctx)
1613 {
1614         hwsim_check_magic(vif);
1615         hwsim_check_chanctx_magic(ctx);
1616
1617         return 0;
1618 }
1619
1620 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1621                                                 struct ieee80211_vif *vif,
1622                                                 struct ieee80211_chanctx_conf *ctx)
1623 {
1624         hwsim_check_magic(vif);
1625         hwsim_check_chanctx_magic(ctx);
1626 }
1627
1628 static struct ieee80211_ops mac80211_hwsim_ops =
1629 {
1630         .tx = mac80211_hwsim_tx,
1631         .start = mac80211_hwsim_start,
1632         .stop = mac80211_hwsim_stop,
1633         .add_interface = mac80211_hwsim_add_interface,
1634         .change_interface = mac80211_hwsim_change_interface,
1635         .remove_interface = mac80211_hwsim_remove_interface,
1636         .config = mac80211_hwsim_config,
1637         .configure_filter = mac80211_hwsim_configure_filter,
1638         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1639         .sta_add = mac80211_hwsim_sta_add,
1640         .sta_remove = mac80211_hwsim_sta_remove,
1641         .sta_notify = mac80211_hwsim_sta_notify,
1642         .set_tim = mac80211_hwsim_set_tim,
1643         .conf_tx = mac80211_hwsim_conf_tx,
1644         .get_survey = mac80211_hwsim_get_survey,
1645         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1646         .ampdu_action = mac80211_hwsim_ampdu_action,
1647         .sw_scan_start = mac80211_hwsim_sw_scan,
1648         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1649         .flush = mac80211_hwsim_flush,
1650         .get_tsf = mac80211_hwsim_get_tsf,
1651         .set_tsf = mac80211_hwsim_set_tsf,
1652 };
1653
1654
1655 static void mac80211_hwsim_free(void)
1656 {
1657         struct list_head tmplist, *i, *tmp;
1658         struct mac80211_hwsim_data *data, *tmpdata;
1659
1660         INIT_LIST_HEAD(&tmplist);
1661
1662         spin_lock_bh(&hwsim_radio_lock);
1663         list_for_each_safe(i, tmp, &hwsim_radios)
1664                 list_move(i, &tmplist);
1665         spin_unlock_bh(&hwsim_radio_lock);
1666
1667         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1668                 debugfs_remove(data->debugfs_group);
1669                 debugfs_remove(data->debugfs_ps);
1670                 debugfs_remove(data->debugfs);
1671                 ieee80211_unregister_hw(data->hw);
1672                 device_unregister(data->dev);
1673                 ieee80211_free_hw(data->hw);
1674         }
1675         class_destroy(hwsim_class);
1676 }
1677
1678
1679 static struct device_driver mac80211_hwsim_driver = {
1680         .name = "mac80211_hwsim"
1681 };
1682
1683 static const struct net_device_ops hwsim_netdev_ops = {
1684         .ndo_start_xmit         = hwsim_mon_xmit,
1685         .ndo_change_mtu         = eth_change_mtu,
1686         .ndo_set_mac_address    = eth_mac_addr,
1687         .ndo_validate_addr      = eth_validate_addr,
1688 };
1689
1690 static void hwsim_mon_setup(struct net_device *dev)
1691 {
1692         dev->netdev_ops = &hwsim_netdev_ops;
1693         dev->destructor = free_netdev;
1694         ether_setup(dev);
1695         dev->tx_queue_len = 0;
1696         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1697         memset(dev->dev_addr, 0, ETH_ALEN);
1698         dev->dev_addr[0] = 0x12;
1699 }
1700
1701
1702 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1703 {
1704         struct mac80211_hwsim_data *data = dat;
1705         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1706         struct sk_buff *skb;
1707         struct ieee80211_pspoll *pspoll;
1708
1709         if (!vp->assoc)
1710                 return;
1711
1712         wiphy_debug(data->hw->wiphy,
1713                     "%s: send PS-Poll to %pM for aid %d\n",
1714                     __func__, vp->bssid, vp->aid);
1715
1716         skb = dev_alloc_skb(sizeof(*pspoll));
1717         if (!skb)
1718                 return;
1719         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1720         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1721                                             IEEE80211_STYPE_PSPOLL |
1722                                             IEEE80211_FCTL_PM);
1723         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1724         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1725         memcpy(pspoll->ta, mac, ETH_ALEN);
1726
1727         rcu_read_lock();
1728         mac80211_hwsim_tx_frame(data->hw, skb,
1729                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1730         rcu_read_unlock();
1731 }
1732
1733 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1734                                 struct ieee80211_vif *vif, int ps)
1735 {
1736         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1737         struct sk_buff *skb;
1738         struct ieee80211_hdr *hdr;
1739
1740         if (!vp->assoc)
1741                 return;
1742
1743         wiphy_debug(data->hw->wiphy,
1744                     "%s: send data::nullfunc to %pM ps=%d\n",
1745                     __func__, vp->bssid, ps);
1746
1747         skb = dev_alloc_skb(sizeof(*hdr));
1748         if (!skb)
1749                 return;
1750         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1751         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1752                                          IEEE80211_STYPE_NULLFUNC |
1753                                          (ps ? IEEE80211_FCTL_PM : 0));
1754         hdr->duration_id = cpu_to_le16(0);
1755         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1756         memcpy(hdr->addr2, mac, ETH_ALEN);
1757         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1758
1759         rcu_read_lock();
1760         mac80211_hwsim_tx_frame(data->hw, skb,
1761                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1762         rcu_read_unlock();
1763 }
1764
1765
1766 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1767                                    struct ieee80211_vif *vif)
1768 {
1769         struct mac80211_hwsim_data *data = dat;
1770         hwsim_send_nullfunc(data, mac, vif, 1);
1771 }
1772
1773
1774 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1775                                       struct ieee80211_vif *vif)
1776 {
1777         struct mac80211_hwsim_data *data = dat;
1778         hwsim_send_nullfunc(data, mac, vif, 0);
1779 }
1780
1781
1782 static int hwsim_fops_ps_read(void *dat, u64 *val)
1783 {
1784         struct mac80211_hwsim_data *data = dat;
1785         *val = data->ps;
1786         return 0;
1787 }
1788
1789 static int hwsim_fops_ps_write(void *dat, u64 val)
1790 {
1791         struct mac80211_hwsim_data *data = dat;
1792         enum ps_mode old_ps;
1793
1794         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1795             val != PS_MANUAL_POLL)
1796                 return -EINVAL;
1797
1798         old_ps = data->ps;
1799         data->ps = val;
1800
1801         if (val == PS_MANUAL_POLL) {
1802                 ieee80211_iterate_active_interfaces(data->hw,
1803                                                     IEEE80211_IFACE_ITER_NORMAL,
1804                                                     hwsim_send_ps_poll, data);
1805                 data->ps_poll_pending = true;
1806         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1807                 ieee80211_iterate_active_interfaces(data->hw,
1808                                                     IEEE80211_IFACE_ITER_NORMAL,
1809                                                     hwsim_send_nullfunc_ps,
1810                                                     data);
1811         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1812                 ieee80211_iterate_active_interfaces(data->hw,
1813                                                     IEEE80211_IFACE_ITER_NORMAL,
1814                                                     hwsim_send_nullfunc_no_ps,
1815                                                     data);
1816         }
1817
1818         return 0;
1819 }
1820
1821 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1822                         "%llu\n");
1823
1824
1825 static int hwsim_fops_group_read(void *dat, u64 *val)
1826 {
1827         struct mac80211_hwsim_data *data = dat;
1828         *val = data->group;
1829         return 0;
1830 }
1831
1832 static int hwsim_fops_group_write(void *dat, u64 val)
1833 {
1834         struct mac80211_hwsim_data *data = dat;
1835         data->group = val;
1836         return 0;
1837 }
1838
1839 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1840                         hwsim_fops_group_read, hwsim_fops_group_write,
1841                         "%llx\n");
1842
1843 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1844                              struct mac_address *addr)
1845 {
1846         struct mac80211_hwsim_data *data;
1847         bool _found = false;
1848
1849         spin_lock_bh(&hwsim_radio_lock);
1850         list_for_each_entry(data, &hwsim_radios, list) {
1851                 if (memcmp(data->addresses[1].addr, addr,
1852                           sizeof(struct mac_address)) == 0) {
1853                         _found = true;
1854                         break;
1855                 }
1856         }
1857         spin_unlock_bh(&hwsim_radio_lock);
1858
1859         if (!_found)
1860                 return NULL;
1861
1862         return data;
1863 }
1864
1865 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1866                                            struct genl_info *info)
1867 {
1868
1869         struct ieee80211_hdr *hdr;
1870         struct mac80211_hwsim_data *data2;
1871         struct ieee80211_tx_info *txi;
1872         struct hwsim_tx_rate *tx_attempts;
1873         unsigned long ret_skb_ptr;
1874         struct sk_buff *skb, *tmp;
1875         struct mac_address *src;
1876         unsigned int hwsim_flags;
1877
1878         int i;
1879         bool found = false;
1880
1881         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1882            !info->attrs[HWSIM_ATTR_FLAGS] ||
1883            !info->attrs[HWSIM_ATTR_COOKIE] ||
1884            !info->attrs[HWSIM_ATTR_TX_INFO])
1885                 goto out;
1886
1887         src = (struct mac_address *)nla_data(
1888                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1889         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1890
1891         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1892
1893         data2 = get_hwsim_data_ref_from_addr(src);
1894
1895         if (data2 == NULL)
1896                 goto out;
1897
1898         /* look for the skb matching the cookie passed back from user */
1899         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1900                 if ((unsigned long)skb == ret_skb_ptr) {
1901                         skb_unlink(skb, &data2->pending);
1902                         found = true;
1903                         break;
1904                 }
1905         }
1906
1907         /* not found */
1908         if (!found)
1909                 goto out;
1910
1911         /* Tx info received because the frame was broadcasted on user space,
1912          so we get all the necessary info: tx attempts and skb control buff */
1913
1914         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1915                        info->attrs[HWSIM_ATTR_TX_INFO]);
1916
1917         /* now send back TX status */
1918         txi = IEEE80211_SKB_CB(skb);
1919
1920         ieee80211_tx_info_clear_status(txi);
1921
1922         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1923                 txi->status.rates[i].idx = tx_attempts[i].idx;
1924                 txi->status.rates[i].count = tx_attempts[i].count;
1925                 /*txi->status.rates[i].flags = 0;*/
1926         }
1927
1928         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1929
1930         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1931            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1932                 if (skb->len >= 16) {
1933                         hdr = (struct ieee80211_hdr *) skb->data;
1934                         mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
1935                                                    hdr->addr2);
1936                 }
1937                 txi->flags |= IEEE80211_TX_STAT_ACK;
1938         }
1939         ieee80211_tx_status_irqsafe(data2->hw, skb);
1940         return 0;
1941 out:
1942         return -EINVAL;
1943
1944 }
1945
1946 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1947                                           struct genl_info *info)
1948 {
1949
1950         struct mac80211_hwsim_data *data2;
1951         struct ieee80211_rx_status rx_status;
1952         struct mac_address *dst;
1953         int frame_data_len;
1954         char *frame_data;
1955         struct sk_buff *skb = NULL;
1956
1957         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1958             !info->attrs[HWSIM_ATTR_FRAME] ||
1959             !info->attrs[HWSIM_ATTR_RX_RATE] ||
1960             !info->attrs[HWSIM_ATTR_SIGNAL])
1961                 goto out;
1962
1963         dst = (struct mac_address *)nla_data(
1964                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1965
1966         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1967         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1968
1969         /* Allocate new skb here */
1970         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1971         if (skb == NULL)
1972                 goto err;
1973
1974         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1975                 /* Copy the data */
1976                 memcpy(skb_put(skb, frame_data_len), frame_data,
1977                        frame_data_len);
1978         } else
1979                 goto err;
1980
1981         data2 = get_hwsim_data_ref_from_addr(dst);
1982
1983         if (data2 == NULL)
1984                 goto out;
1985
1986         /* check if radio is configured properly */
1987
1988         if (data2->idle || !data2->started)
1989                 goto out;
1990
1991         /*A frame is received from user space*/
1992         memset(&rx_status, 0, sizeof(rx_status));
1993         rx_status.freq = data2->channel->center_freq;
1994         rx_status.band = data2->channel->band;
1995         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1996         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1997
1998         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1999         ieee80211_rx_irqsafe(data2->hw, skb);
2000
2001         return 0;
2002 err:
2003         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2004         goto out;
2005 out:
2006         dev_kfree_skb(skb);
2007         return -EINVAL;
2008 }
2009
2010 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2011                                       struct genl_info *info)
2012 {
2013         if (info == NULL)
2014                 goto out;
2015
2016         wmediumd_portid = info->snd_portid;
2017
2018         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2019                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2020
2021         return 0;
2022 out:
2023         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2024         return -EINVAL;
2025 }
2026
2027 /* Generic Netlink operations array */
2028 static struct genl_ops hwsim_ops[] = {
2029         {
2030                 .cmd = HWSIM_CMD_REGISTER,
2031                 .policy = hwsim_genl_policy,
2032                 .doit = hwsim_register_received_nl,
2033                 .flags = GENL_ADMIN_PERM,
2034         },
2035         {
2036                 .cmd = HWSIM_CMD_FRAME,
2037                 .policy = hwsim_genl_policy,
2038                 .doit = hwsim_cloned_frame_received_nl,
2039         },
2040         {
2041                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2042                 .policy = hwsim_genl_policy,
2043                 .doit = hwsim_tx_info_frame_received_nl,
2044         },
2045 };
2046
2047 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2048                                          unsigned long state,
2049                                          void *_notify)
2050 {
2051         struct netlink_notify *notify = _notify;
2052
2053         if (state != NETLINK_URELEASE)
2054                 return NOTIFY_DONE;
2055
2056         if (notify->portid == wmediumd_portid) {
2057                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2058                        " socket, switching to perfect channel medium\n");
2059                 wmediumd_portid = 0;
2060         }
2061         return NOTIFY_DONE;
2062
2063 }
2064
2065 static struct notifier_block hwsim_netlink_notifier = {
2066         .notifier_call = mac80211_hwsim_netlink_notify,
2067 };
2068
2069 static int hwsim_init_netlink(void)
2070 {
2071         int rc;
2072
2073         /* userspace test API hasn't been adjusted for multi-channel */
2074         if (channels > 1)
2075                 return 0;
2076
2077         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2078
2079         rc = genl_register_family_with_ops(&hwsim_genl_family,
2080                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
2081         if (rc)
2082                 goto failure;
2083
2084         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2085         if (rc)
2086                 goto failure;
2087
2088         return 0;
2089
2090 failure:
2091         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2092         return -EINVAL;
2093 }
2094
2095 static void hwsim_exit_netlink(void)
2096 {
2097         int ret;
2098
2099         /* userspace test API hasn't been adjusted for multi-channel */
2100         if (channels > 1)
2101                 return;
2102
2103         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2104         /* unregister the notifier */
2105         netlink_unregister_notifier(&hwsim_netlink_notifier);
2106         /* unregister the family */
2107         ret = genl_unregister_family(&hwsim_genl_family);
2108         if (ret)
2109                 printk(KERN_DEBUG "mac80211_hwsim: "
2110                        "unregister family %i\n", ret);
2111 }
2112
2113 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2114         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2115         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2116                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2117 #ifdef CONFIG_MAC80211_MESH
2118                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2119 #endif
2120                                  BIT(NL80211_IFTYPE_AP) |
2121                                  BIT(NL80211_IFTYPE_P2P_GO) },
2122         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2123 };
2124
2125 static struct ieee80211_iface_combination hwsim_if_comb = {
2126         .limits = hwsim_if_limits,
2127         .n_limits = ARRAY_SIZE(hwsim_if_limits),
2128         .max_interfaces = 2048,
2129         .num_different_channels = 1,
2130 };
2131
2132 static int __init init_mac80211_hwsim(void)
2133 {
2134         int i, err = 0;
2135         u8 addr[ETH_ALEN];
2136         struct mac80211_hwsim_data *data;
2137         struct ieee80211_hw *hw;
2138         enum ieee80211_band band;
2139
2140         if (radios < 1 || radios > 100)
2141                 return -EINVAL;
2142
2143         if (channels < 1)
2144                 return -EINVAL;
2145
2146         if (channels > 1) {
2147                 hwsim_if_comb.num_different_channels = channels;
2148                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2149                 mac80211_hwsim_ops.cancel_hw_scan =
2150                         mac80211_hwsim_cancel_hw_scan;
2151                 mac80211_hwsim_ops.sw_scan_start = NULL;
2152                 mac80211_hwsim_ops.sw_scan_complete = NULL;
2153                 mac80211_hwsim_ops.remain_on_channel =
2154                         mac80211_hwsim_roc;
2155                 mac80211_hwsim_ops.cancel_remain_on_channel =
2156                         mac80211_hwsim_croc;
2157                 mac80211_hwsim_ops.add_chanctx =
2158                         mac80211_hwsim_add_chanctx;
2159                 mac80211_hwsim_ops.remove_chanctx =
2160                         mac80211_hwsim_remove_chanctx;
2161                 mac80211_hwsim_ops.change_chanctx =
2162                         mac80211_hwsim_change_chanctx;
2163                 mac80211_hwsim_ops.assign_vif_chanctx =
2164                         mac80211_hwsim_assign_vif_chanctx;
2165                 mac80211_hwsim_ops.unassign_vif_chanctx =
2166                         mac80211_hwsim_unassign_vif_chanctx;
2167         }
2168
2169         spin_lock_init(&hwsim_radio_lock);
2170         INIT_LIST_HEAD(&hwsim_radios);
2171
2172         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2173         if (IS_ERR(hwsim_class))
2174                 return PTR_ERR(hwsim_class);
2175
2176         memset(addr, 0, ETH_ALEN);
2177         addr[0] = 0x02;
2178
2179         for (i = 0; i < radios; i++) {
2180                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2181                        i);
2182                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2183                 if (!hw) {
2184                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2185                                "failed\n");
2186                         err = -ENOMEM;
2187                         goto failed;
2188                 }
2189                 data = hw->priv;
2190                 data->hw = hw;
2191
2192                 data->dev = device_create(hwsim_class, NULL, 0, hw,
2193                                           "hwsim%d", i);
2194                 if (IS_ERR(data->dev)) {
2195                         printk(KERN_DEBUG
2196                                "mac80211_hwsim: device_create "
2197                                "failed (%ld)\n", PTR_ERR(data->dev));
2198                         err = -ENOMEM;
2199                         goto failed_drvdata;
2200                 }
2201                 data->dev->driver = &mac80211_hwsim_driver;
2202                 skb_queue_head_init(&data->pending);
2203
2204                 SET_IEEE80211_DEV(hw, data->dev);
2205                 addr[3] = i >> 8;
2206                 addr[4] = i;
2207                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2208                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2209                 data->addresses[1].addr[0] |= 0x40;
2210                 hw->wiphy->n_addresses = 2;
2211                 hw->wiphy->addresses = data->addresses;
2212
2213                 hw->wiphy->iface_combinations = &hwsim_if_comb;
2214                 hw->wiphy->n_iface_combinations = 1;
2215
2216                 if (channels > 1) {
2217                         hw->wiphy->max_scan_ssids = 255;
2218                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2219                         hw->wiphy->max_remain_on_channel_duration = 1000;
2220                 }
2221
2222                 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2223                 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2224
2225                 hw->channel_change_time = 1;
2226                 hw->queues = 5;
2227                 hw->offchannel_tx_hw_queue = 4;
2228                 hw->wiphy->interface_modes =
2229                         BIT(NL80211_IFTYPE_STATION) |
2230                         BIT(NL80211_IFTYPE_AP) |
2231                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
2232                         BIT(NL80211_IFTYPE_P2P_GO) |
2233                         BIT(NL80211_IFTYPE_ADHOC) |
2234                         BIT(NL80211_IFTYPE_MESH_POINT) |
2235                         BIT(NL80211_IFTYPE_P2P_DEVICE);
2236
2237                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2238                             IEEE80211_HW_SIGNAL_DBM |
2239                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2240                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2241                             IEEE80211_HW_AMPDU_AGGREGATION |
2242                             IEEE80211_HW_WANT_MONITOR_VIF |
2243                             IEEE80211_HW_QUEUE_CONTROL;
2244
2245                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2246                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
2247
2248                 /* ask mac80211 to reserve space for magic */
2249                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2250                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2251                 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2252
2253                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2254                         sizeof(hwsim_channels_2ghz));
2255                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2256                         sizeof(hwsim_channels_5ghz));
2257                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2258
2259                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2260                         struct ieee80211_supported_band *sband = &data->bands[band];
2261                         switch (band) {
2262                         case IEEE80211_BAND_2GHZ:
2263                                 sband->channels = data->channels_2ghz;
2264                                 sband->n_channels =
2265                                         ARRAY_SIZE(hwsim_channels_2ghz);
2266                                 sband->bitrates = data->rates;
2267                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2268                                 break;
2269                         case IEEE80211_BAND_5GHZ:
2270                                 sband->channels = data->channels_5ghz;
2271                                 sband->n_channels =
2272                                         ARRAY_SIZE(hwsim_channels_5ghz);
2273                                 sband->bitrates = data->rates + 4;
2274                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2275                                 break;
2276                         default:
2277                                 continue;
2278                         }
2279
2280                         sband->ht_cap.ht_supported = true;
2281                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2282                                 IEEE80211_HT_CAP_GRN_FLD |
2283                                 IEEE80211_HT_CAP_SGI_40 |
2284                                 IEEE80211_HT_CAP_DSSSCCK40;
2285                         sband->ht_cap.ampdu_factor = 0x3;
2286                         sband->ht_cap.ampdu_density = 0x6;
2287                         memset(&sband->ht_cap.mcs, 0,
2288                                sizeof(sband->ht_cap.mcs));
2289                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
2290                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
2291                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2292
2293                         hw->wiphy->bands[band] = sband;
2294
2295                         if (channels == 1)
2296                                 continue;
2297
2298                         sband->vht_cap.vht_supported = true;
2299                         sband->vht_cap.cap =
2300                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2301                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2302                                 IEEE80211_VHT_CAP_RXLDPC |
2303                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2304                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2305                                 IEEE80211_VHT_CAP_TXSTBC |
2306                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2307                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2308                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2309                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2310                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2311                         sband->vht_cap.vht_mcs.rx_mcs_map =
2312                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2313                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2314                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2315                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2316                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2317                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2318                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2319                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2320                         sband->vht_cap.vht_mcs.tx_mcs_map =
2321                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2322                 }
2323                 /* By default all radios are belonging to the first group */
2324                 data->group = 1;
2325                 mutex_init(&data->mutex);
2326
2327                 /* Enable frame retransmissions for lossy channels */
2328                 hw->max_rates = 4;
2329                 hw->max_rate_tries = 11;
2330
2331                 /* Work to be done prior to ieee80211_register_hw() */
2332                 switch (regtest) {
2333                 case HWSIM_REGTEST_DISABLED:
2334                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2335                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2336                 case HWSIM_REGTEST_DIFF_COUNTRY:
2337                         /*
2338                          * Nothing to be done for driver regulatory domain
2339                          * hints prior to ieee80211_register_hw()
2340                          */
2341                         break;
2342                 case HWSIM_REGTEST_WORLD_ROAM:
2343                         if (i == 0) {
2344                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2345                                 wiphy_apply_custom_regulatory(hw->wiphy,
2346                                         &hwsim_world_regdom_custom_01);
2347                         }
2348                         break;
2349                 case HWSIM_REGTEST_CUSTOM_WORLD:
2350                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2351                         wiphy_apply_custom_regulatory(hw->wiphy,
2352                                 &hwsim_world_regdom_custom_01);
2353                         break;
2354                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2355                         if (i == 0) {
2356                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2357                                 wiphy_apply_custom_regulatory(hw->wiphy,
2358                                         &hwsim_world_regdom_custom_01);
2359                         } else if (i == 1) {
2360                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2361                                 wiphy_apply_custom_regulatory(hw->wiphy,
2362                                         &hwsim_world_regdom_custom_02);
2363                         }
2364                         break;
2365                 case HWSIM_REGTEST_STRICT_ALL:
2366                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2367                         break;
2368                 case HWSIM_REGTEST_STRICT_FOLLOW:
2369                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2370                         if (i == 0)
2371                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2372                         break;
2373                 case HWSIM_REGTEST_ALL:
2374                         if (i == 0) {
2375                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2376                                 wiphy_apply_custom_regulatory(hw->wiphy,
2377                                         &hwsim_world_regdom_custom_01);
2378                         } else if (i == 1) {
2379                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2380                                 wiphy_apply_custom_regulatory(hw->wiphy,
2381                                         &hwsim_world_regdom_custom_02);
2382                         } else if (i == 4)
2383                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2384                         break;
2385                 default:
2386                         break;
2387                 }
2388
2389                 /* give the regulatory workqueue a chance to run */
2390                 if (regtest)
2391                         schedule_timeout_interruptible(1);
2392                 err = ieee80211_register_hw(hw);
2393                 if (err < 0) {
2394                         printk(KERN_DEBUG "mac80211_hwsim: "
2395                                "ieee80211_register_hw failed (%d)\n", err);
2396                         goto failed_hw;
2397                 }
2398
2399                 /* Work to be done after to ieee80211_register_hw() */
2400                 switch (regtest) {
2401                 case HWSIM_REGTEST_WORLD_ROAM:
2402                 case HWSIM_REGTEST_DISABLED:
2403                         break;
2404                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2405                         if (!i)
2406                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2407                         break;
2408                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2409                 case HWSIM_REGTEST_STRICT_ALL:
2410                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2411                         break;
2412                 case HWSIM_REGTEST_DIFF_COUNTRY:
2413                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2414                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2415                         break;
2416                 case HWSIM_REGTEST_CUSTOM_WORLD:
2417                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2418                         /*
2419                          * Nothing to be done for custom world regulatory
2420                          * domains after to ieee80211_register_hw
2421                          */
2422                         break;
2423                 case HWSIM_REGTEST_STRICT_FOLLOW:
2424                         if (i == 0)
2425                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2426                         break;
2427                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2428                         if (i == 0)
2429                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2430                         else if (i == 1)
2431                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2432                         break;
2433                 case HWSIM_REGTEST_ALL:
2434                         if (i == 2)
2435                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2436                         else if (i == 3)
2437                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2438                         else if (i == 4)
2439                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2440                         break;
2441                 default:
2442                         break;
2443                 }
2444
2445                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2446                             hw->wiphy->perm_addr);
2447
2448                 data->debugfs = debugfs_create_dir("hwsim",
2449                                                    hw->wiphy->debugfsdir);
2450                 data->debugfs_ps = debugfs_create_file("ps", 0666,
2451                                                        data->debugfs, data,
2452                                                        &hwsim_fops_ps);
2453                 data->debugfs_group = debugfs_create_file("group", 0666,
2454                                                         data->debugfs, data,
2455                                                         &hwsim_fops_group);
2456
2457                 tasklet_hrtimer_init(&data->beacon_timer,
2458                                      mac80211_hwsim_beacon,
2459                                      CLOCK_REALTIME, HRTIMER_MODE_ABS);
2460
2461                 list_add_tail(&data->list, &hwsim_radios);
2462         }
2463
2464         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2465         if (hwsim_mon == NULL)
2466                 goto failed;
2467
2468         rtnl_lock();
2469
2470         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2471         if (err < 0)
2472                 goto failed_mon;
2473
2474
2475         err = register_netdevice(hwsim_mon);
2476         if (err < 0)
2477                 goto failed_mon;
2478
2479         rtnl_unlock();
2480
2481         err = hwsim_init_netlink();
2482         if (err < 0)
2483                 goto failed_nl;
2484
2485         return 0;
2486
2487 failed_nl:
2488         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2489         return err;
2490
2491 failed_mon:
2492         rtnl_unlock();
2493         free_netdev(hwsim_mon);
2494         mac80211_hwsim_free();
2495         return err;
2496
2497 failed_hw:
2498         device_unregister(data->dev);
2499 failed_drvdata:
2500         ieee80211_free_hw(hw);
2501 failed:
2502         mac80211_hwsim_free();
2503         return err;
2504 }
2505 module_init(init_mac80211_hwsim);
2506
2507 static void __exit exit_mac80211_hwsim(void)
2508 {
2509         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2510
2511         hwsim_exit_netlink();
2512
2513         mac80211_hwsim_free();
2514         unregister_netdev(hwsim_mon);
2515 }
2516 module_exit(exit_mac80211_hwsim);