drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include "mac80211_hwsim.h"
  34
  35 #define WARN_QUEUE 100
  36 #define MAX_QUEUE 200
  37
  38 MODULE_AUTHOR("Jouni Malinen");
  39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  40 MODULE_LICENSE("GPL");
  41
  42 static u32 wmediumd_portid;
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 static bool support_p2p_device = true;
  61 module_param(support_p2p_device, bool, 0444);
  62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  63
  64 /**
  65  * enum hwsim_regtest - the type of regulatory tests we offer
  66  *
  67  * These are the different values you can use for the regtest
  68  * module parameter. This is useful to help test world roaming
  69  * and the driver regulatory_hint() call and combinations of these.
  70  * If you want to do specific alpha2 regulatory domain tests simply
  71  * use the userspace regulatory request as that will be respected as
  72  * well without the need of this module parameter. This is designed
  73  * only for testing the driver regulatory request, world roaming
  74  * and all possible combinations.
  75  *
  76  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  77  *      this is the default value.
  78  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  79  *      hint, only one driver regulatory hint will be sent as such the
  80  *      secondary radios are expected to follow.
  81  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  82  *      request with all radios reporting the same regulatory domain.
  83  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  84  *      different regulatory domains requests. Expected behaviour is for
  85  *      an intersection to occur but each device will still use their
  86  *      respective regulatory requested domains. Subsequent radios will
  87  *      use the resulting intersection.
  88  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  89  *      this by using a custom beacon-capable regulatory domain for the first
  90  *      radio. All other device world roam.
  91  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  92  *      domain requests. All radios will adhere to this custom world regulatory
  93  *      domain.
  94  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  95  *      domain requests. The first radio will adhere to the first custom world
  96  *      regulatory domain, the second one to the second custom world regulatory
  97  *      domain. All other devices will world roam.
  98  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  99  *      settings, only the first radio will send a regulatory domain request
 100  *      and use strict settings. The rest of the radios are expected to follow.
 101  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 102  *      settings. All radios will adhere to this.
 103  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 104  *      domain settings, combined with secondary driver regulatory domain
 105  *      settings. The first radio will get a strict regulatory domain setting
 106  *      using the first driver regulatory request and the second radio will use
 107  *      non-strict settings using the second driver regulatory request. All
 108  *      other devices should follow the intersection created between the
 109  *      first two.
 110  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 111  *      at least 6 radios for a complete test. We will test in this order:
 112  *      1 - driver custom world regulatory domain
 113  *      2 - second custom world regulatory domain
 114  *      3 - first driver regulatory domain request
 115  *      4 - second driver regulatory domain request
 116  *      5 - strict regulatory domain settings using the third driver regulatory
 117  *          domain request
 118  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 119  *                 regulatory requests.
 120  */
 121 enum hwsim_regtest {
 122         HWSIM_REGTEST_DISABLED = 0,
 123         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 124         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 125         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 126         HWSIM_REGTEST_WORLD_ROAM = 4,
 127         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 128         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 129         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 130         HWSIM_REGTEST_STRICT_ALL = 8,
 131         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 132         HWSIM_REGTEST_ALL = 10,
 133 };
 134
 135 /* Set to one of the HWSIM_REGTEST_* values above */
 136 static int regtest = HWSIM_REGTEST_DISABLED;
 137 module_param(regtest, int, 0444);
 138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 139
 140 static const char *hwsim_alpha2s[] = {
 141         "FI",
 142         "AL",
 143         "US",
 144         "DE",
 145         "JP",
 146         "AL",
 147 };
 148
 149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 150         .n_reg_rules = 4,
 151         .alpha2 =  "99",
 152         .reg_rules = {
 153                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 154                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 155                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 156                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 157         }
 158 };
 159
 160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 161         .n_reg_rules = 2,
 162         .alpha2 =  "99",
 163         .reg_rules = {
 164                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 165                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 166                          NL80211_RRF_NO_IR),
 167         }
 168 };
 169
 170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 171         &hwsim_world_regdom_custom_01,
 172         &hwsim_world_regdom_custom_02,
 173 };
 174
 175 struct hwsim_vif_priv {
 176         u32 magic;
 177         u8 bssid[ETH_ALEN];
 178         bool assoc;
 179         bool bcn_en;
 180         u16 aid;
 181 };
 182
 183 #define HWSIM_VIF_MAGIC 0x69537748
 184
 185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 186 {
 187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 188         WARN(vp->magic != HWSIM_VIF_MAGIC,
 189              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 190              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 191 }
 192
 193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 194 {
 195         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 196         vp->magic = HWSIM_VIF_MAGIC;
 197 }
 198
 199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = 0;
 203 }
 204
 205 struct hwsim_sta_priv {
 206         u32 magic;
 207 };
 208
 209 #define HWSIM_STA_MAGIC 0x6d537749
 210
 211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 212 {
 213         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 214         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 215 }
 216
 217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         sp->magic = HWSIM_STA_MAGIC;
 221 }
 222
 223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = 0;
 227 }
 228
 229 struct hwsim_chanctx_priv {
 230         u32 magic;
 231 };
 232
 233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 234
 235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 236 {
 237         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 238         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 239 }
 240
 241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         cp->magic = HWSIM_CHANCTX_MAGIC;
 245 }
 246
 247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = 0;
 251 }
 252
 253 static struct class *hwsim_class;
 254
 255 static struct net_device *hwsim_mon; /* global monitor netdev */
 256
 257 #define CHAN2G(_freq)  { \
 258         .band = IEEE80211_BAND_2GHZ, \
 259         .center_freq = (_freq), \
 260         .hw_value = (_freq), \
 261         .max_power = 20, \
 262 }
 263
 264 #define CHAN5G(_freq) { \
 265         .band = IEEE80211_BAND_5GHZ, \
 266         .center_freq = (_freq), \
 267         .hw_value = (_freq), \
 268         .max_power = 20, \
 269 }
 270
 271 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 272         CHAN2G(2412), /* Channel 1 */
 273         CHAN2G(2417), /* Channel 2 */
 274         CHAN2G(2422), /* Channel 3 */
 275         CHAN2G(2427), /* Channel 4 */
 276         CHAN2G(2432), /* Channel 5 */
 277         CHAN2G(2437), /* Channel 6 */
 278         CHAN2G(2442), /* Channel 7 */
 279         CHAN2G(2447), /* Channel 8 */
 280         CHAN2G(2452), /* Channel 9 */
 281         CHAN2G(2457), /* Channel 10 */
 282         CHAN2G(2462), /* Channel 11 */
 283         CHAN2G(2467), /* Channel 12 */
 284         CHAN2G(2472), /* Channel 13 */
 285         CHAN2G(2484), /* Channel 14 */
 286 };
 287
 288 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 289         CHAN5G(5180), /* Channel 36 */
 290         CHAN5G(5200), /* Channel 40 */
 291         CHAN5G(5220), /* Channel 44 */
 292         CHAN5G(5240), /* Channel 48 */
 293
 294         CHAN5G(5260), /* Channel 52 */
 295         CHAN5G(5280), /* Channel 56 */
 296         CHAN5G(5300), /* Channel 60 */
 297         CHAN5G(5320), /* Channel 64 */
 298
 299         CHAN5G(5500), /* Channel 100 */
 300         CHAN5G(5520), /* Channel 104 */
 301         CHAN5G(5540), /* Channel 108 */
 302         CHAN5G(5560), /* Channel 112 */
 303         CHAN5G(5580), /* Channel 116 */
 304         CHAN5G(5600), /* Channel 120 */
 305         CHAN5G(5620), /* Channel 124 */
 306         CHAN5G(5640), /* Channel 128 */
 307         CHAN5G(5660), /* Channel 132 */
 308         CHAN5G(5680), /* Channel 136 */
 309         CHAN5G(5700), /* Channel 140 */
 310
 311         CHAN5G(5745), /* Channel 149 */
 312         CHAN5G(5765), /* Channel 153 */
 313         CHAN5G(5785), /* Channel 157 */
 314         CHAN5G(5805), /* Channel 161 */
 315         CHAN5G(5825), /* Channel 165 */
 316 };
 317
 318 static const struct ieee80211_rate hwsim_rates[] = {
 319         { .bitrate = 10 },
 320         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 321         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 322         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 323         { .bitrate = 60 },
 324         { .bitrate = 90 },
 325         { .bitrate = 120 },
 326         { .bitrate = 180 },
 327         { .bitrate = 240 },
 328         { .bitrate = 360 },
 329         { .bitrate = 480 },
 330         { .bitrate = 540 }
 331 };
 332
 333 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 334         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 335         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 336                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 337 #ifdef CONFIG_MAC80211_MESH
 338                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 339 #endif
 340                                  BIT(NL80211_IFTYPE_AP) |
 341                                  BIT(NL80211_IFTYPE_P2P_GO) },
 342         /* must be last, see hwsim_if_comb */
 343         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 344 };
 345
 346 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
 347         { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
 348 };
 349
 350 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 351         {
 352                 .limits = hwsim_if_limits,
 353                 /* remove the last entry which is P2P_DEVICE */
 354                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 355                 .max_interfaces = 2048,
 356                 .num_different_channels = 1,
 357         },
 358         {
 359                 .limits = hwsim_if_dfs_limits,
 360                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
 361                 .max_interfaces = 8,
 362                 .num_different_channels = 1,
 363                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 364                                        BIT(NL80211_CHAN_WIDTH_20) |
 365                                        BIT(NL80211_CHAN_WIDTH_40) |
 366                                        BIT(NL80211_CHAN_WIDTH_80) |
 367                                        BIT(NL80211_CHAN_WIDTH_160),
 368         }
 369 };
 370
 371 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 372         {
 373                 .limits = hwsim_if_limits,
 374                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 375                 .max_interfaces = 2048,
 376                 .num_different_channels = 1,
 377         },
 378         {
 379                 .limits = hwsim_if_dfs_limits,
 380                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
 381                 .max_interfaces = 8,
 382                 .num_different_channels = 1,
 383                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 384                                        BIT(NL80211_CHAN_WIDTH_20) |
 385                                        BIT(NL80211_CHAN_WIDTH_40) |
 386                                        BIT(NL80211_CHAN_WIDTH_80) |
 387                                        BIT(NL80211_CHAN_WIDTH_160),
 388         }
 389 };
 390
 391 static spinlock_t hwsim_radio_lock;
 392 static struct list_head hwsim_radios;
 393 static int hwsim_radio_idx;
 394
 395 static struct platform_driver mac80211_hwsim_driver = {
 396         .driver = {
 397                 .name = "mac80211_hwsim",
 398                 .owner = THIS_MODULE,
 399         },
 400 };
 401
 402 struct mac80211_hwsim_data {
 403         struct list_head list;
 404         struct ieee80211_hw *hw;
 405         struct device *dev;
 406         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 407         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 408         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 409         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 410         struct ieee80211_iface_combination if_combination;
 411
 412         struct mac_address addresses[2];
 413         int channels, idx;
 414         bool use_chanctx;
 415         bool destroy_on_close;
 416         struct work_struct destroy_work;
 417         u32 portid;
 418
 419         struct ieee80211_channel *tmp_chan;
 420         struct delayed_work roc_done;
 421         struct delayed_work hw_scan;
 422         struct cfg80211_scan_request *hw_scan_request;
 423         struct ieee80211_vif *hw_scan_vif;
 424         int scan_chan_idx;
 425
 426         struct ieee80211_channel *channel;
 427         u64 beacon_int  /* beacon interval in us */;
 428         unsigned int rx_filter;
 429         bool started, idle, scanning;
 430         struct mutex mutex;
 431         struct tasklet_hrtimer beacon_timer;
 432         enum ps_mode {
 433                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 434         } ps;
 435         bool ps_poll_pending;
 436         struct dentry *debugfs;
 437
 438         struct sk_buff_head pending;    /* packets pending */
 439         /*
 440          * Only radios in the same group can communicate together (the
 441          * channel has to match too). Each bit represents a group. A
 442          * radio can be in more than one group.
 443          */
 444         u64 group;
 445
 446         int power_level;
 447
 448         /* difference between this hw's clock and the real clock, in usecs */
 449         s64 tsf_offset;
 450         s64 bcn_delta;
 451         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 452         u64 abs_bcn_ts;
 453
 454         /* Stats */
 455         u64 tx_pkts;
 456         u64 rx_pkts;
 457         u64 tx_bytes;
 458         u64 rx_bytes;
 459         u64 tx_dropped;
 460         u64 tx_failed;
 461 };
 462
 463
 464 struct hwsim_radiotap_hdr {
 465         struct ieee80211_radiotap_header hdr;
 466         __le64 rt_tsft;
 467         u8 rt_flags;
 468         u8 rt_rate;
 469         __le16 rt_channel;
 470         __le16 rt_chbitmask;
 471 } __packed;
 472
 473 struct hwsim_radiotap_ack_hdr {
 474         struct ieee80211_radiotap_header hdr;
 475         u8 rt_flags;
 476         u8 pad;
 477         __le16 rt_channel;
 478         __le16 rt_chbitmask;
 479 } __packed;
 480
 481 /* MAC80211_HWSIM netlinf family */
 482 static struct genl_family hwsim_genl_family = {
 483         .id = GENL_ID_GENERATE,
 484         .hdrsize = 0,
 485         .name = "MAC80211_HWSIM",
 486         .version = 1,
 487         .maxattr = HWSIM_ATTR_MAX,
 488 };
 489
 490 /* MAC80211_HWSIM netlink policy */
 491
 492 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 493         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 494         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 495         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 496                                .len = IEEE80211_MAX_DATA_LEN },
 497         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 498         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 499         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 500         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 501                                  .len = IEEE80211_TX_MAX_RATES *
 502                                         sizeof(struct hwsim_tx_rate)},
 503         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 504         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 505         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 506         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 507         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 508         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 509         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 510         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 511         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 512         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 513         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 514 };
 515
 516 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 517                                     struct sk_buff *skb,
 518                                     struct ieee80211_channel *chan);
 519
 520 /* sysfs attributes */
 521 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 522 {
 523         struct mac80211_hwsim_data *data = dat;
 524         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 525         struct sk_buff *skb;
 526         struct ieee80211_pspoll *pspoll;
 527
 528         if (!vp->assoc)
 529                 return;
 530
 531         wiphy_debug(data->hw->wiphy,
 532                     "%s: send PS-Poll to %pM for aid %d\n",
 533                     __func__, vp->bssid, vp->aid);
 534
 535         skb = dev_alloc_skb(sizeof(*pspoll));
 536         if (!skb)
 537                 return;
 538         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 539         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 540                                             IEEE80211_STYPE_PSPOLL |
 541                                             IEEE80211_FCTL_PM);
 542         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 543         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 544         memcpy(pspoll->ta, mac, ETH_ALEN);
 545
 546         rcu_read_lock();
 547         mac80211_hwsim_tx_frame(data->hw, skb,
 548                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 549         rcu_read_unlock();
 550 }
 551
 552 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 553                                 struct ieee80211_vif *vif, int ps)
 554 {
 555         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 556         struct sk_buff *skb;
 557         struct ieee80211_hdr *hdr;
 558
 559         if (!vp->assoc)
 560                 return;
 561
 562         wiphy_debug(data->hw->wiphy,
 563                     "%s: send data::nullfunc to %pM ps=%d\n",
 564                     __func__, vp->bssid, ps);
 565
 566         skb = dev_alloc_skb(sizeof(*hdr));
 567         if (!skb)
 568                 return;
 569         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 570         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 571                                          IEEE80211_STYPE_NULLFUNC |
 572                                          (ps ? IEEE80211_FCTL_PM : 0));
 573         hdr->duration_id = cpu_to_le16(0);
 574         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 575         memcpy(hdr->addr2, mac, ETH_ALEN);
 576         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 577
 578         rcu_read_lock();
 579         mac80211_hwsim_tx_frame(data->hw, skb,
 580                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 581         rcu_read_unlock();
 582 }
 583
 584
 585 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 586                                    struct ieee80211_vif *vif)
 587 {
 588         struct mac80211_hwsim_data *data = dat;
 589         hwsim_send_nullfunc(data, mac, vif, 1);
 590 }
 591
 592 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 593                                       struct ieee80211_vif *vif)
 594 {
 595         struct mac80211_hwsim_data *data = dat;
 596         hwsim_send_nullfunc(data, mac, vif, 0);
 597 }
 598
 599 static int hwsim_fops_ps_read(void *dat, u64 *val)
 600 {
 601         struct mac80211_hwsim_data *data = dat;
 602         *val = data->ps;
 603         return 0;
 604 }
 605
 606 static int hwsim_fops_ps_write(void *dat, u64 val)
 607 {
 608         struct mac80211_hwsim_data *data = dat;
 609         enum ps_mode old_ps;
 610
 611         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 612             val != PS_MANUAL_POLL)
 613                 return -EINVAL;
 614
 615         old_ps = data->ps;
 616         data->ps = val;
 617
 618         if (val == PS_MANUAL_POLL) {
 619                 ieee80211_iterate_active_interfaces(data->hw,
 620                                                     IEEE80211_IFACE_ITER_NORMAL,
 621                                                     hwsim_send_ps_poll, data);
 622                 data->ps_poll_pending = true;
 623         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 624                 ieee80211_iterate_active_interfaces(data->hw,
 625                                                     IEEE80211_IFACE_ITER_NORMAL,
 626                                                     hwsim_send_nullfunc_ps,
 627                                                     data);
 628         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 629                 ieee80211_iterate_active_interfaces(data->hw,
 630                                                     IEEE80211_IFACE_ITER_NORMAL,
 631                                                     hwsim_send_nullfunc_no_ps,
 632                                                     data);
 633         }
 634
 635         return 0;
 636 }
 637
 638 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 639                         "%llu\n");
 640
 641 static int hwsim_write_simulate_radar(void *dat, u64 val)
 642 {
 643         struct mac80211_hwsim_data *data = dat;
 644
 645         ieee80211_radar_detected(data->hw);
 646
 647         return 0;
 648 }
 649
 650 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 651                         hwsim_write_simulate_radar, "%llu\n");
 652
 653 static int hwsim_fops_group_read(void *dat, u64 *val)
 654 {
 655         struct mac80211_hwsim_data *data = dat;
 656         *val = data->group;
 657         return 0;
 658 }
 659
 660 static int hwsim_fops_group_write(void *dat, u64 val)
 661 {
 662         struct mac80211_hwsim_data *data = dat;
 663         data->group = val;
 664         return 0;
 665 }
 666
 667 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 668                         hwsim_fops_group_read, hwsim_fops_group_write,
 669                         "%llx\n");
 670
 671 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 672                                         struct net_device *dev)
 673 {
 674         /* TODO: allow packet injection */
 675         dev_kfree_skb(skb);
 676         return NETDEV_TX_OK;
 677 }
 678
 679 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 680 {
 681         return ktime_to_us(ktime_get_real());
 682 }
 683
 684 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 685 {
 686         u64 now = mac80211_hwsim_get_tsf_raw();
 687         return cpu_to_le64(now + data->tsf_offset);
 688 }
 689
 690 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 691                                   struct ieee80211_vif *vif)
 692 {
 693         struct mac80211_hwsim_data *data = hw->priv;
 694         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 695 }
 696
 697 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 698                 struct ieee80211_vif *vif, u64 tsf)
 699 {
 700         struct mac80211_hwsim_data *data = hw->priv;
 701         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 702         u32 bcn_int = data->beacon_int;
 703         u64 delta = abs64(tsf - now);
 704
 705         /* adjust after beaconing with new timestamp at old TBTT */
 706         if (tsf > now) {
 707                 data->tsf_offset += delta;
 708                 data->bcn_delta = do_div(delta, bcn_int);
 709         } else {
 710                 data->tsf_offset -= delta;
 711                 data->bcn_delta = -do_div(delta, bcn_int);
 712         }
 713 }
 714
 715 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 716                                       struct sk_buff *tx_skb,
 717                                       struct ieee80211_channel *chan)
 718 {
 719         struct mac80211_hwsim_data *data = hw->priv;
 720         struct sk_buff *skb;
 721         struct hwsim_radiotap_hdr *hdr;
 722         u16 flags;
 723         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 724         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 725
 726         if (!netif_running(hwsim_mon))
 727                 return;
 728
 729         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 730         if (skb == NULL)
 731                 return;
 732
 733         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 734         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 735         hdr->hdr.it_pad = 0;
 736         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 737         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 738                                           (1 << IEEE80211_RADIOTAP_RATE) |
 739                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 740                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 741         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 742         hdr->rt_flags = 0;
 743         hdr->rt_rate = txrate->bitrate / 5;
 744         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 745         flags = IEEE80211_CHAN_2GHZ;
 746         if (txrate->flags & IEEE80211_RATE_ERP_G)
 747                 flags |= IEEE80211_CHAN_OFDM;
 748         else
 749                 flags |= IEEE80211_CHAN_CCK;
 750         hdr->rt_chbitmask = cpu_to_le16(flags);
 751
 752         skb->dev = hwsim_mon;
 753         skb_set_mac_header(skb, 0);
 754         skb->ip_summed = CHECKSUM_UNNECESSARY;
 755         skb->pkt_type = PACKET_OTHERHOST;
 756         skb->protocol = htons(ETH_P_802_2);
 757         memset(skb->cb, 0, sizeof(skb->cb));
 758         netif_rx(skb);
 759 }
 760
 761
 762 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 763                                        const u8 *addr)
 764 {
 765         struct sk_buff *skb;
 766         struct hwsim_radiotap_ack_hdr *hdr;
 767         u16 flags;
 768         struct ieee80211_hdr *hdr11;
 769
 770         if (!netif_running(hwsim_mon))
 771                 return;
 772
 773         skb = dev_alloc_skb(100);
 774         if (skb == NULL)
 775                 return;
 776
 777         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 778         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 779         hdr->hdr.it_pad = 0;
 780         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 781         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 782                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 783         hdr->rt_flags = 0;
 784         hdr->pad = 0;
 785         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 786         flags = IEEE80211_CHAN_2GHZ;
 787         hdr->rt_chbitmask = cpu_to_le16(flags);
 788
 789         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 790         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 791                                            IEEE80211_STYPE_ACK);
 792         hdr11->duration_id = cpu_to_le16(0);
 793         memcpy(hdr11->addr1, addr, ETH_ALEN);
 794
 795         skb->dev = hwsim_mon;
 796         skb_set_mac_header(skb, 0);
 797         skb->ip_summed = CHECKSUM_UNNECESSARY;
 798         skb->pkt_type = PACKET_OTHERHOST;
 799         skb->protocol = htons(ETH_P_802_2);
 800         memset(skb->cb, 0, sizeof(skb->cb));
 801         netif_rx(skb);
 802 }
 803
 804 struct mac80211_hwsim_addr_match_data {
 805         u8 addr[ETH_ALEN];
 806         bool ret;
 807 };
 808
 809 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 810                                      struct ieee80211_vif *vif)
 811 {
 812         struct mac80211_hwsim_addr_match_data *md = data;
 813
 814         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 815                 md->ret = true;
 816 }
 817
 818 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 819                                       const u8 *addr)
 820 {
 821         struct mac80211_hwsim_addr_match_data md = {
 822                 .ret = false,
 823         };
 824
 825         memcpy(md.addr, addr, ETH_ALEN);
 826
 827         ieee80211_iterate_active_interfaces_atomic(data->hw,
 828                                                    IEEE80211_IFACE_ITER_NORMAL,
 829                                                    mac80211_hwsim_addr_iter,
 830                                                    &md);
 831
 832         return md.ret;
 833 }
 834
 835 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 836                            struct sk_buff *skb)
 837 {
 838         switch (data->ps) {
 839         case PS_DISABLED:
 840                 return true;
 841         case PS_ENABLED:
 842                 return false;
 843         case PS_AUTO_POLL:
 844                 /* TODO: accept (some) Beacons by default and other frames only
 845                  * if pending PS-Poll has been sent */
 846                 return true;
 847         case PS_MANUAL_POLL:
 848                 /* Allow unicast frames to own address if there is a pending
 849                  * PS-Poll */
 850                 if (data->ps_poll_pending &&
 851                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 852                         data->ps_poll_pending = false;
 853                         return true;
 854                 }
 855                 return false;
 856         }
 857
 858         return true;
 859 }
 860
 861 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 862                                        struct sk_buff *my_skb,
 863                                        int dst_portid)
 864 {
 865         struct sk_buff *skb;
 866         struct mac80211_hwsim_data *data = hw->priv;
 867         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 868         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 869         void *msg_head;
 870         unsigned int hwsim_flags = 0;
 871         int i;
 872         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 873
 874         if (data->ps != PS_DISABLED)
 875                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 876         /* If the queue contains MAX_QUEUE skb's drop some */
 877         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 878                 /* Droping until WARN_QUEUE level */
 879                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
 880                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
 881                         data->tx_dropped++;
 882                 }
 883         }
 884
 885         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 886         if (skb == NULL)
 887                 goto nla_put_failure;
 888
 889         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 890                                HWSIM_CMD_FRAME);
 891         if (msg_head == NULL) {
 892                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 893                 goto nla_put_failure;
 894         }
 895
 896         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 897                     ETH_ALEN, data->addresses[1].addr))
 898                 goto nla_put_failure;
 899
 900         /* We get the skb->data */
 901         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 902                 goto nla_put_failure;
 903
 904         /* We get the flags for this transmission, and we translate them to
 905            wmediumd flags  */
 906
 907         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 908                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 909
 910         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 911                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 912
 913         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 914                 goto nla_put_failure;
 915
 916         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
 917                 goto nla_put_failure;
 918
 919         /* We get the tx control (rate and retries) info*/
 920
 921         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 922                 tx_attempts[i].idx = info->status.rates[i].idx;
 923                 tx_attempts[i].count = info->status.rates[i].count;
 924         }
 925
 926         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 927                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 928                     tx_attempts))
 929                 goto nla_put_failure;
 930
 931         /* We create a cookie to identify this skb */
 932         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 933                 goto nla_put_failure;
 934
 935         genlmsg_end(skb, msg_head);
 936         genlmsg_unicast(&init_net, skb, dst_portid);
 937
 938         /* Enqueue the packet */
 939         skb_queue_tail(&data->pending, my_skb);
 940         data->tx_pkts++;
 941         data->tx_bytes += my_skb->len;
 942         return;
 943
 944 nla_put_failure:
 945         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 946         ieee80211_free_txskb(hw, my_skb);
 947         data->tx_failed++;
 948 }
 949
 950 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 951                                struct ieee80211_channel *c2)
 952 {
 953         if (!c1 || !c2)
 954                 return false;
 955
 956         return c1->center_freq == c2->center_freq;
 957 }
 958
 959 struct tx_iter_data {
 960         struct ieee80211_channel *channel;
 961         bool receive;
 962 };
 963
 964 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 965                                    struct ieee80211_vif *vif)
 966 {
 967         struct tx_iter_data *data = _data;
 968
 969         if (!vif->chanctx_conf)
 970                 return;
 971
 972         if (!hwsim_chans_compat(data->channel,
 973                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 974                 return;
 975
 976         data->receive = true;
 977 }
 978
 979 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 980                                           struct sk_buff *skb,
 981                                           struct ieee80211_channel *chan)
 982 {
 983         struct mac80211_hwsim_data *data = hw->priv, *data2;
 984         bool ack = false;
 985         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 986         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 987         struct ieee80211_rx_status rx_status;
 988         u64 now;
 989
 990         memset(&rx_status, 0, sizeof(rx_status));
 991         rx_status.flag |= RX_FLAG_MACTIME_START;
 992         rx_status.freq = chan->center_freq;
 993         rx_status.band = chan->band;
 994         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 995                 rx_status.rate_idx =
 996                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
 997                 rx_status.vht_nss =
 998                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
 999                 rx_status.flag |= RX_FLAG_VHT;
1000         } else {
1001                 rx_status.rate_idx = info->control.rates[0].idx;
1002                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1003                         rx_status.flag |= RX_FLAG_HT;
1004         }
1005         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1006                 rx_status.flag |= RX_FLAG_40MHZ;
1007         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1008                 rx_status.flag |= RX_FLAG_SHORT_GI;
1009         /* TODO: simulate real signal strength (and optional packet loss) */
1010         rx_status.signal = data->power_level - 50;
1011
1012         if (data->ps != PS_DISABLED)
1013                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1014
1015         /* release the skb's source info */
1016         skb_orphan(skb);
1017         skb_dst_drop(skb);
1018         skb->mark = 0;
1019         secpath_reset(skb);
1020         nf_reset(skb);
1021
1022         /*
1023          * Get absolute mactime here so all HWs RX at the "same time", and
1024          * absolute TX time for beacon mactime so the timestamp matches.
1025          * Giving beacons a different mactime than non-beacons looks messy, but
1026          * it helps the Toffset be exact and a ~10us mactime discrepancy
1027          * probably doesn't really matter.
1028          */
1029         if (ieee80211_is_beacon(hdr->frame_control) ||
1030             ieee80211_is_probe_resp(hdr->frame_control))
1031                 now = data->abs_bcn_ts;
1032         else
1033                 now = mac80211_hwsim_get_tsf_raw();
1034
1035         /* Copy skb to all enabled radios that are on the current frequency */
1036         spin_lock(&hwsim_radio_lock);
1037         list_for_each_entry(data2, &hwsim_radios, list) {
1038                 struct sk_buff *nskb;
1039                 struct tx_iter_data tx_iter_data = {
1040                         .receive = false,
1041                         .channel = chan,
1042                 };
1043
1044                 if (data == data2)
1045                         continue;
1046
1047                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1048                     !hwsim_ps_rx_ok(data2, skb))
1049                         continue;
1050
1051                 if (!(data->group & data2->group))
1052                         continue;
1053
1054                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1055                     !hwsim_chans_compat(chan, data2->channel)) {
1056                         ieee80211_iterate_active_interfaces_atomic(
1057                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1058                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1059                         if (!tx_iter_data.receive)
1060                                 continue;
1061                 }
1062
1063                 /*
1064                  * reserve some space for our vendor and the normal
1065                  * radiotap header, since we're copying anyway
1066                  */
1067                 if (skb->len < PAGE_SIZE && paged_rx) {
1068                         struct page *page = alloc_page(GFP_ATOMIC);
1069
1070                         if (!page)
1071                                 continue;
1072
1073                         nskb = dev_alloc_skb(128);
1074                         if (!nskb) {
1075                                 __free_page(page);
1076                                 continue;
1077                         }
1078
1079                         memcpy(page_address(page), skb->data, skb->len);
1080                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1081                 } else {
1082                         nskb = skb_copy(skb, GFP_ATOMIC);
1083                         if (!nskb)
1084                                 continue;
1085                 }
1086
1087                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1088                         ack = true;
1089
1090                 rx_status.mactime = now + data2->tsf_offset;
1091
1092                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1093                 data2->rx_pkts++;
1094                 data2->rx_bytes += nskb->len;
1095                 ieee80211_rx_irqsafe(data2->hw, nskb);
1096         }
1097         spin_unlock(&hwsim_radio_lock);
1098
1099         return ack;
1100 }
1101
1102 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1103                               struct ieee80211_tx_control *control,
1104                               struct sk_buff *skb)
1105 {
1106         struct mac80211_hwsim_data *data = hw->priv;
1107         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1108         struct ieee80211_chanctx_conf *chanctx_conf;
1109         struct ieee80211_channel *channel;
1110         bool ack;
1111         u32 _portid;
1112
1113         if (WARN_ON(skb->len < 10)) {
1114                 /* Should not happen; just a sanity check for addr1 use */
1115                 ieee80211_free_txskb(hw, skb);
1116                 return;
1117         }
1118
1119         if (!data->use_chanctx) {
1120                 channel = data->channel;
1121         } else if (txi->hw_queue == 4) {
1122                 channel = data->tmp_chan;
1123         } else {
1124                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1125                 if (chanctx_conf)
1126                         channel = chanctx_conf->def.chan;
1127                 else
1128                         channel = NULL;
1129         }
1130
1131         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1132                 ieee80211_free_txskb(hw, skb);
1133                 return;
1134         }
1135
1136         if (data->idle && !data->tmp_chan) {
1137                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1138                 ieee80211_free_txskb(hw, skb);
1139                 return;
1140         }
1141
1142         if (txi->control.vif)
1143                 hwsim_check_magic(txi->control.vif);
1144         if (control->sta)
1145                 hwsim_check_sta_magic(control->sta);
1146
1147         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1148                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1149                                        txi->control.rates,
1150                                        ARRAY_SIZE(txi->control.rates));
1151
1152         txi->rate_driver_data[0] = channel;
1153         mac80211_hwsim_monitor_rx(hw, skb, channel);
1154
1155         /* wmediumd mode check */
1156         _portid = ACCESS_ONCE(wmediumd_portid);
1157
1158         if (_portid)
1159                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1160
1161         /* NO wmediumd detected, perfect medium simulation */
1162         data->tx_pkts++;
1163         data->tx_bytes += skb->len;
1164         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1165
1166         if (ack && skb->len >= 16) {
1167                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1168                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1169         }
1170
1171         ieee80211_tx_info_clear_status(txi);
1172
1173         /* frame was transmitted at most favorable rate at first attempt */
1174         txi->control.rates[0].count = 1;
1175         txi->control.rates[1].idx = -1;
1176
1177         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1178                 txi->flags |= IEEE80211_TX_STAT_ACK;
1179         ieee80211_tx_status_irqsafe(hw, skb);
1180 }
1181
1182
1183 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1184 {
1185         struct mac80211_hwsim_data *data = hw->priv;
1186         wiphy_debug(hw->wiphy, "%s\n", __func__);
1187         data->started = true;
1188         return 0;
1189 }
1190
1191
1192 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1193 {
1194         struct mac80211_hwsim_data *data = hw->priv;
1195         data->started = false;
1196         tasklet_hrtimer_cancel(&data->beacon_timer);
1197         wiphy_debug(hw->wiphy, "%s\n", __func__);
1198 }
1199
1200
1201 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1202                                         struct ieee80211_vif *vif)
1203 {
1204         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1205                     __func__, ieee80211_vif_type_p2p(vif),
1206                     vif->addr);
1207         hwsim_set_magic(vif);
1208
1209         vif->cab_queue = 0;
1210         vif->hw_queue[IEEE80211_AC_VO] = 0;
1211         vif->hw_queue[IEEE80211_AC_VI] = 1;
1212         vif->hw_queue[IEEE80211_AC_BE] = 2;
1213         vif->hw_queue[IEEE80211_AC_BK] = 3;
1214
1215         return 0;
1216 }
1217
1218
1219 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1220                                            struct ieee80211_vif *vif,
1221                                            enum nl80211_iftype newtype,
1222                                            bool newp2p)
1223 {
1224         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1225         wiphy_debug(hw->wiphy,
1226                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1227                     __func__, ieee80211_vif_type_p2p(vif),
1228                     newtype, vif->addr);
1229         hwsim_check_magic(vif);
1230
1231         /*
1232          * interface may change from non-AP to AP in
1233          * which case this needs to be set up again
1234          */
1235         vif->cab_queue = 0;
1236
1237         return 0;
1238 }
1239
1240 static void mac80211_hwsim_remove_interface(
1241         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1242 {
1243         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1244                     __func__, ieee80211_vif_type_p2p(vif),
1245                     vif->addr);
1246         hwsim_check_magic(vif);
1247         hwsim_clear_magic(vif);
1248 }
1249
1250 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1251                                     struct sk_buff *skb,
1252                                     struct ieee80211_channel *chan)
1253 {
1254         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1255
1256         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1257                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1258                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1259                                        txi->control.rates,
1260                                        ARRAY_SIZE(txi->control.rates));
1261         }
1262
1263         mac80211_hwsim_monitor_rx(hw, skb, chan);
1264
1265         if (_pid)
1266                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1267
1268         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1269         dev_kfree_skb(skb);
1270 }
1271
1272 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1273                                      struct ieee80211_vif *vif)
1274 {
1275         struct mac80211_hwsim_data *data = arg;
1276         struct ieee80211_hw *hw = data->hw;
1277         struct ieee80211_tx_info *info;
1278         struct ieee80211_rate *txrate;
1279         struct ieee80211_mgmt *mgmt;
1280         struct sk_buff *skb;
1281
1282         hwsim_check_magic(vif);
1283
1284         if (vif->type != NL80211_IFTYPE_AP &&
1285             vif->type != NL80211_IFTYPE_MESH_POINT &&
1286             vif->type != NL80211_IFTYPE_ADHOC)
1287                 return;
1288
1289         skb = ieee80211_beacon_get(hw, vif);
1290         if (skb == NULL)
1291                 return;
1292         info = IEEE80211_SKB_CB(skb);
1293         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1294                 ieee80211_get_tx_rates(vif, NULL, skb,
1295                                        info->control.rates,
1296                                        ARRAY_SIZE(info->control.rates));
1297
1298         txrate = ieee80211_get_tx_rate(hw, info);
1299
1300         mgmt = (struct ieee80211_mgmt *) skb->data;
1301         /* fake header transmission time */
1302         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1303         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1304                                                data->tsf_offset +
1305                                                24 * 8 * 10 / txrate->bitrate);
1306
1307         mac80211_hwsim_tx_frame(hw, skb,
1308                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1309
1310         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1311                 ieee80211_csa_finish(vif);
1312 }
1313
1314 static enum hrtimer_restart
1315 mac80211_hwsim_beacon(struct hrtimer *timer)
1316 {
1317         struct mac80211_hwsim_data *data =
1318                 container_of(timer, struct mac80211_hwsim_data,
1319                              beacon_timer.timer);
1320         struct ieee80211_hw *hw = data->hw;
1321         u64 bcn_int = data->beacon_int;
1322         ktime_t next_bcn;
1323
1324         if (!data->started)
1325                 goto out;
1326
1327         ieee80211_iterate_active_interfaces_atomic(
1328                 hw, IEEE80211_IFACE_ITER_NORMAL,
1329                 mac80211_hwsim_beacon_tx, data);
1330
1331         /* beacon at new TBTT + beacon interval */
1332         if (data->bcn_delta) {
1333                 bcn_int -= data->bcn_delta;
1334                 data->bcn_delta = 0;
1335         }
1336
1337         next_bcn = ktime_add(hrtimer_get_expires(timer),
1338                              ns_to_ktime(bcn_int * 1000));
1339         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1340 out:
1341         return HRTIMER_NORESTART;
1342 }
1343
1344 static const char * const hwsim_chanwidths[] = {
1345         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1346         [NL80211_CHAN_WIDTH_20] = "ht20",
1347         [NL80211_CHAN_WIDTH_40] = "ht40",
1348         [NL80211_CHAN_WIDTH_80] = "vht80",
1349         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1350         [NL80211_CHAN_WIDTH_160] = "vht160",
1351 };
1352
1353 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1354 {
1355         struct mac80211_hwsim_data *data = hw->priv;
1356         struct ieee80211_conf *conf = &hw->conf;
1357         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1358                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1359                 [IEEE80211_SMPS_OFF] = "off",
1360                 [IEEE80211_SMPS_STATIC] = "static",
1361                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1362         };
1363
1364         if (conf->chandef.chan)
1365                 wiphy_debug(hw->wiphy,
1366                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1367                             __func__,
1368                             conf->chandef.chan->center_freq,
1369                             conf->chandef.center_freq1,
1370                             conf->chandef.center_freq2,
1371                             hwsim_chanwidths[conf->chandef.width],
1372                             !!(conf->flags & IEEE80211_CONF_IDLE),
1373                             !!(conf->flags & IEEE80211_CONF_PS),
1374                             smps_modes[conf->smps_mode]);
1375         else
1376                 wiphy_debug(hw->wiphy,
1377                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1378                             __func__,
1379                             !!(conf->flags & IEEE80211_CONF_IDLE),
1380                             !!(conf->flags & IEEE80211_CONF_PS),
1381                             smps_modes[conf->smps_mode]);
1382
1383         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1384
1385         data->channel = conf->chandef.chan;
1386
1387         WARN_ON(data->channel && data->use_chanctx);
1388
1389         data->power_level = conf->power_level;
1390         if (!data->started || !data->beacon_int)
1391                 tasklet_hrtimer_cancel(&data->beacon_timer);
1392         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1393                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1394                 u32 bcn_int = data->beacon_int;
1395                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1396
1397                 tasklet_hrtimer_start(&data->beacon_timer,
1398                                       ns_to_ktime(until_tbtt * 1000),
1399                                       HRTIMER_MODE_REL);
1400         }
1401
1402         return 0;
1403 }
1404
1405
1406 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1407                                             unsigned int changed_flags,
1408                                             unsigned int *total_flags,u64 multicast)
1409 {
1410         struct mac80211_hwsim_data *data = hw->priv;
1411
1412         wiphy_debug(hw->wiphy, "%s\n", __func__);
1413
1414         data->rx_filter = 0;
1415         if (*total_flags & FIF_PROMISC_IN_BSS)
1416                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1417         if (*total_flags & FIF_ALLMULTI)
1418                 data->rx_filter |= FIF_ALLMULTI;
1419
1420         *total_flags = data->rx_filter;
1421 }
1422
1423 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1424                                        struct ieee80211_vif *vif)
1425 {
1426         unsigned int *count = data;
1427         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1428
1429         if (vp->bcn_en)
1430                 (*count)++;
1431 }
1432
1433 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1434                                             struct ieee80211_vif *vif,
1435                                             struct ieee80211_bss_conf *info,
1436                                             u32 changed)
1437 {
1438         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1439         struct mac80211_hwsim_data *data = hw->priv;
1440
1441         hwsim_check_magic(vif);
1442
1443         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1444                     __func__, changed, vif->addr);
1445
1446         if (changed & BSS_CHANGED_BSSID) {
1447                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1448                             __func__, info->bssid);
1449                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1450         }
1451
1452         if (changed & BSS_CHANGED_ASSOC) {
1453                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1454                             info->assoc, info->aid);
1455                 vp->assoc = info->assoc;
1456                 vp->aid = info->aid;
1457         }
1458
1459         if (changed & BSS_CHANGED_BEACON_INT) {
1460                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1461                 data->beacon_int = info->beacon_int * 1024;
1462         }
1463
1464         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1465                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1466                 vp->bcn_en = info->enable_beacon;
1467                 if (data->started &&
1468                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1469                     info->enable_beacon) {
1470                         u64 tsf, until_tbtt;
1471                         u32 bcn_int;
1472                         if (WARN_ON(!data->beacon_int))
1473                                 data->beacon_int = 1000 * 1024;
1474                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1475                         bcn_int = data->beacon_int;
1476                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1477                         tasklet_hrtimer_start(&data->beacon_timer,
1478                                               ns_to_ktime(until_tbtt * 1000),
1479                                               HRTIMER_MODE_REL);
1480                 } else if (!info->enable_beacon) {
1481                         unsigned int count = 0;
1482                         ieee80211_iterate_active_interfaces_atomic(
1483                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1484                                 mac80211_hwsim_bcn_en_iter, &count);
1485                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1486                                     count);
1487                         if (count == 0)
1488                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1489                 }
1490         }
1491
1492         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1493                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1494                             info->use_cts_prot);
1495         }
1496
1497         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1498                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1499                             info->use_short_preamble);
1500         }
1501
1502         if (changed & BSS_CHANGED_ERP_SLOT) {
1503                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1504         }
1505
1506         if (changed & BSS_CHANGED_HT) {
1507                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1508                             info->ht_operation_mode);
1509         }
1510
1511         if (changed & BSS_CHANGED_BASIC_RATES) {
1512                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1513                             (unsigned long long) info->basic_rates);
1514         }
1515
1516         if (changed & BSS_CHANGED_TXPOWER)
1517                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1518 }
1519
1520 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1521                                   struct ieee80211_vif *vif,
1522                                   struct ieee80211_sta *sta)
1523 {
1524         hwsim_check_magic(vif);
1525         hwsim_set_sta_magic(sta);
1526
1527         return 0;
1528 }
1529
1530 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1531                                      struct ieee80211_vif *vif,
1532                                      struct ieee80211_sta *sta)
1533 {
1534         hwsim_check_magic(vif);
1535         hwsim_clear_sta_magic(sta);
1536
1537         return 0;
1538 }
1539
1540 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1541                                       struct ieee80211_vif *vif,
1542                                       enum sta_notify_cmd cmd,
1543                                       struct ieee80211_sta *sta)
1544 {
1545         hwsim_check_magic(vif);
1546
1547         switch (cmd) {
1548         case STA_NOTIFY_SLEEP:
1549         case STA_NOTIFY_AWAKE:
1550                 /* TODO: make good use of these flags */
1551                 break;
1552         default:
1553                 WARN(1, "Invalid sta notify: %d\n", cmd);
1554                 break;
1555         }
1556 }
1557
1558 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1559                                   struct ieee80211_sta *sta,
1560                                   bool set)
1561 {
1562         hwsim_check_sta_magic(sta);
1563         return 0;
1564 }
1565
1566 static int mac80211_hwsim_conf_tx(
1567         struct ieee80211_hw *hw,
1568         struct ieee80211_vif *vif, u16 queue,
1569         const struct ieee80211_tx_queue_params *params)
1570 {
1571         wiphy_debug(hw->wiphy,
1572                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1573                     __func__, queue,
1574                     params->txop, params->cw_min,
1575                     params->cw_max, params->aifs);
1576         return 0;
1577 }
1578
1579 static int mac80211_hwsim_get_survey(
1580         struct ieee80211_hw *hw, int idx,
1581         struct survey_info *survey)
1582 {
1583         struct ieee80211_conf *conf = &hw->conf;
1584
1585         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1586
1587         if (idx != 0)
1588                 return -ENOENT;
1589
1590         /* Current channel */
1591         survey->channel = conf->chandef.chan;
1592
1593         /*
1594          * Magically conjured noise level --- this is only ok for simulated hardware.
1595          *
1596          * A real driver which cannot determine the real channel noise MUST NOT
1597          * report any noise, especially not a magically conjured one :-)
1598          */
1599         survey->filled = SURVEY_INFO_NOISE_DBM;
1600         survey->noise = -92;
1601
1602         return 0;
1603 }
1604
1605 #ifdef CONFIG_NL80211_TESTMODE
1606 /*
1607  * This section contains example code for using netlink
1608  * attributes with the testmode command in nl80211.
1609  */
1610
1611 /* These enums need to be kept in sync with userspace */
1612 enum hwsim_testmode_attr {
1613         __HWSIM_TM_ATTR_INVALID = 0,
1614         HWSIM_TM_ATTR_CMD       = 1,
1615         HWSIM_TM_ATTR_PS        = 2,
1616
1617         /* keep last */
1618         __HWSIM_TM_ATTR_AFTER_LAST,
1619         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1620 };
1621
1622 enum hwsim_testmode_cmd {
1623         HWSIM_TM_CMD_SET_PS             = 0,
1624         HWSIM_TM_CMD_GET_PS             = 1,
1625         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1626         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1627 };
1628
1629 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1630         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1631         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1632 };
1633
1634 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1635                                        struct ieee80211_vif *vif,
1636                                        void *data, int len)
1637 {
1638         struct mac80211_hwsim_data *hwsim = hw->priv;
1639         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1640         struct sk_buff *skb;
1641         int err, ps;
1642
1643         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1644                         hwsim_testmode_policy);
1645         if (err)
1646                 return err;
1647
1648         if (!tb[HWSIM_TM_ATTR_CMD])
1649                 return -EINVAL;
1650
1651         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1652         case HWSIM_TM_CMD_SET_PS:
1653                 if (!tb[HWSIM_TM_ATTR_PS])
1654                         return -EINVAL;
1655                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1656                 return hwsim_fops_ps_write(hwsim, ps);
1657         case HWSIM_TM_CMD_GET_PS:
1658                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1659                                                 nla_total_size(sizeof(u32)));
1660                 if (!skb)
1661                         return -ENOMEM;
1662                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1663                         goto nla_put_failure;
1664                 return cfg80211_testmode_reply(skb);
1665         case HWSIM_TM_CMD_STOP_QUEUES:
1666                 ieee80211_stop_queues(hw);
1667                 return 0;
1668         case HWSIM_TM_CMD_WAKE_QUEUES:
1669                 ieee80211_wake_queues(hw);
1670                 return 0;
1671         default:
1672                 return -EOPNOTSUPP;
1673         }
1674
1675  nla_put_failure:
1676         kfree_skb(skb);
1677         return -ENOBUFS;
1678 }
1679 #endif
1680
1681 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1682                                        struct ieee80211_vif *vif,
1683                                        enum ieee80211_ampdu_mlme_action action,
1684                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1685                                        u8 buf_size)
1686 {
1687         switch (action) {
1688         case IEEE80211_AMPDU_TX_START:
1689                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1690                 break;
1691         case IEEE80211_AMPDU_TX_STOP_CONT:
1692         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1693         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1694                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1695                 break;
1696         case IEEE80211_AMPDU_TX_OPERATIONAL:
1697                 break;
1698         case IEEE80211_AMPDU_RX_START:
1699         case IEEE80211_AMPDU_RX_STOP:
1700                 break;
1701         default:
1702                 return -EOPNOTSUPP;
1703         }
1704
1705         return 0;
1706 }
1707
1708 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1709                                  struct ieee80211_vif *vif,
1710                                  u32 queues, bool drop)
1711 {
1712         /* Not implemented, queues only on kernel side */
1713 }
1714
1715 static void hw_scan_work(struct work_struct *work)
1716 {
1717         struct mac80211_hwsim_data *hwsim =
1718                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1719         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1720         int dwell, i;
1721
1722         mutex_lock(&hwsim->mutex);
1723         if (hwsim->scan_chan_idx >= req->n_channels) {
1724                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1725                 ieee80211_scan_completed(hwsim->hw, false);
1726                 hwsim->hw_scan_request = NULL;
1727                 hwsim->hw_scan_vif = NULL;
1728                 hwsim->tmp_chan = NULL;
1729                 mutex_unlock(&hwsim->mutex);
1730                 return;
1731         }
1732
1733         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1734                     req->channels[hwsim->scan_chan_idx]->center_freq);
1735
1736         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1737         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1738             !req->n_ssids) {
1739                 dwell = 120;
1740         } else {
1741                 dwell = 30;
1742                 /* send probes */
1743                 for (i = 0; i < req->n_ssids; i++) {
1744                         struct sk_buff *probe;
1745
1746                         probe = ieee80211_probereq_get(hwsim->hw,
1747                                                        hwsim->hw_scan_vif,
1748                                                        req->ssids[i].ssid,
1749                                                        req->ssids[i].ssid_len,
1750                                                        req->ie_len);
1751                         if (!probe)
1752                                 continue;
1753
1754                         if (req->ie_len)
1755                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1756                                        req->ie_len);
1757
1758                         local_bh_disable();
1759                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1760                                                 hwsim->tmp_chan);
1761                         local_bh_enable();
1762                 }
1763         }
1764         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1765                                      msecs_to_jiffies(dwell));
1766         hwsim->scan_chan_idx++;
1767         mutex_unlock(&hwsim->mutex);
1768 }
1769
1770 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1771                                   struct ieee80211_vif *vif,
1772                                   struct ieee80211_scan_request *hw_req)
1773 {
1774         struct mac80211_hwsim_data *hwsim = hw->priv;
1775         struct cfg80211_scan_request *req = &hw_req->req;
1776
1777         mutex_lock(&hwsim->mutex);
1778         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1779                 mutex_unlock(&hwsim->mutex);
1780                 return -EBUSY;
1781         }
1782         hwsim->hw_scan_request = req;
1783         hwsim->hw_scan_vif = vif;
1784         hwsim->scan_chan_idx = 0;
1785         mutex_unlock(&hwsim->mutex);
1786
1787         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1788
1789         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1790
1791         return 0;
1792 }
1793
1794 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1795                                           struct ieee80211_vif *vif)
1796 {
1797         struct mac80211_hwsim_data *hwsim = hw->priv;
1798
1799         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1800
1801         cancel_delayed_work_sync(&hwsim->hw_scan);
1802
1803         mutex_lock(&hwsim->mutex);
1804         ieee80211_scan_completed(hwsim->hw, true);
1805         hwsim->tmp_chan = NULL;
1806         hwsim->hw_scan_request = NULL;
1807         hwsim->hw_scan_vif = NULL;
1808         mutex_unlock(&hwsim->mutex);
1809 }
1810
1811 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1812 {
1813         struct mac80211_hwsim_data *hwsim = hw->priv;
1814
1815         mutex_lock(&hwsim->mutex);
1816
1817         if (hwsim->scanning) {
1818                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1819                 goto out;
1820         }
1821
1822         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1823         hwsim->scanning = true;
1824
1825 out:
1826         mutex_unlock(&hwsim->mutex);
1827 }
1828
1829 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1830 {
1831         struct mac80211_hwsim_data *hwsim = hw->priv;
1832
1833         mutex_lock(&hwsim->mutex);
1834
1835         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1836         hwsim->scanning = false;
1837
1838         mutex_unlock(&hwsim->mutex);
1839 }
1840
1841 static void hw_roc_done(struct work_struct *work)
1842 {
1843         struct mac80211_hwsim_data *hwsim =
1844                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1845
1846         mutex_lock(&hwsim->mutex);
1847         ieee80211_remain_on_channel_expired(hwsim->hw);
1848         hwsim->tmp_chan = NULL;
1849         mutex_unlock(&hwsim->mutex);
1850
1851         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1852 }
1853
1854 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1855                               struct ieee80211_vif *vif,
1856                               struct ieee80211_channel *chan,
1857                               int duration,
1858                               enum ieee80211_roc_type type)
1859 {
1860         struct mac80211_hwsim_data *hwsim = hw->priv;
1861
1862         mutex_lock(&hwsim->mutex);
1863         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1864                 mutex_unlock(&hwsim->mutex);
1865                 return -EBUSY;
1866         }
1867
1868         hwsim->tmp_chan = chan;
1869         mutex_unlock(&hwsim->mutex);
1870
1871         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1872                     chan->center_freq, duration);
1873
1874         ieee80211_ready_on_channel(hw);
1875
1876         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1877                                      msecs_to_jiffies(duration));
1878         return 0;
1879 }
1880
1881 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1882 {
1883         struct mac80211_hwsim_data *hwsim = hw->priv;
1884
1885         cancel_delayed_work_sync(&hwsim->roc_done);
1886
1887         mutex_lock(&hwsim->mutex);
1888         hwsim->tmp_chan = NULL;
1889         mutex_unlock(&hwsim->mutex);
1890
1891         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1892
1893         return 0;
1894 }
1895
1896 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1897                                       struct ieee80211_chanctx_conf *ctx)
1898 {
1899         hwsim_set_chanctx_magic(ctx);
1900         wiphy_debug(hw->wiphy,
1901                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1902                     ctx->def.chan->center_freq, ctx->def.width,
1903                     ctx->def.center_freq1, ctx->def.center_freq2);
1904         return 0;
1905 }
1906
1907 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1908                                           struct ieee80211_chanctx_conf *ctx)
1909 {
1910         wiphy_debug(hw->wiphy,
1911                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1912                     ctx->def.chan->center_freq, ctx->def.width,
1913                     ctx->def.center_freq1, ctx->def.center_freq2);
1914         hwsim_check_chanctx_magic(ctx);
1915         hwsim_clear_chanctx_magic(ctx);
1916 }
1917
1918 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1919                                           struct ieee80211_chanctx_conf *ctx,
1920                                           u32 changed)
1921 {
1922         hwsim_check_chanctx_magic(ctx);
1923         wiphy_debug(hw->wiphy,
1924                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1925                     ctx->def.chan->center_freq, ctx->def.width,
1926                     ctx->def.center_freq1, ctx->def.center_freq2);
1927 }
1928
1929 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1930                                              struct ieee80211_vif *vif,
1931                                              struct ieee80211_chanctx_conf *ctx)
1932 {
1933         hwsim_check_magic(vif);
1934         hwsim_check_chanctx_magic(ctx);
1935
1936         return 0;
1937 }
1938
1939 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1940                                                 struct ieee80211_vif *vif,
1941                                                 struct ieee80211_chanctx_conf *ctx)
1942 {
1943         hwsim_check_magic(vif);
1944         hwsim_check_chanctx_magic(ctx);
1945 }
1946
1947 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
1948         "tx_pkts_nic",
1949         "tx_bytes_nic",
1950         "rx_pkts_nic",
1951         "rx_bytes_nic",
1952         "d_tx_dropped",
1953         "d_tx_failed",
1954         "d_ps_mode",
1955         "d_group",
1956         "d_tx_power",
1957 };
1958
1959 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
1960
1961 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
1962                                           struct ieee80211_vif *vif,
1963                                           u32 sset, u8 *data)
1964 {
1965         if (sset == ETH_SS_STATS)
1966                 memcpy(data, *mac80211_hwsim_gstrings_stats,
1967                        sizeof(mac80211_hwsim_gstrings_stats));
1968 }
1969
1970 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
1971                                             struct ieee80211_vif *vif, int sset)
1972 {
1973         if (sset == ETH_SS_STATS)
1974                 return MAC80211_HWSIM_SSTATS_LEN;
1975         return 0;
1976 }
1977
1978 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
1979                                         struct ieee80211_vif *vif,
1980                                         struct ethtool_stats *stats, u64 *data)
1981 {
1982         struct mac80211_hwsim_data *ar = hw->priv;
1983         int i = 0;
1984
1985         data[i++] = ar->tx_pkts;
1986         data[i++] = ar->tx_bytes;
1987         data[i++] = ar->rx_pkts;
1988         data[i++] = ar->rx_bytes;
1989         data[i++] = ar->tx_dropped;
1990         data[i++] = ar->tx_failed;
1991         data[i++] = ar->ps;
1992         data[i++] = ar->group;
1993         data[i++] = ar->power_level;
1994
1995         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
1996 }
1997
1998 static const struct ieee80211_ops mac80211_hwsim_ops = {
1999         .tx = mac80211_hwsim_tx,
2000         .start = mac80211_hwsim_start,
2001         .stop = mac80211_hwsim_stop,
2002         .add_interface = mac80211_hwsim_add_interface,
2003         .change_interface = mac80211_hwsim_change_interface,
2004         .remove_interface = mac80211_hwsim_remove_interface,
2005         .config = mac80211_hwsim_config,
2006         .configure_filter = mac80211_hwsim_configure_filter,
2007         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2008         .sta_add = mac80211_hwsim_sta_add,
2009         .sta_remove = mac80211_hwsim_sta_remove,
2010         .sta_notify = mac80211_hwsim_sta_notify,
2011         .set_tim = mac80211_hwsim_set_tim,
2012         .conf_tx = mac80211_hwsim_conf_tx,
2013         .get_survey = mac80211_hwsim_get_survey,
2014         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2015         .ampdu_action = mac80211_hwsim_ampdu_action,
2016         .sw_scan_start = mac80211_hwsim_sw_scan,
2017         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2018         .flush = mac80211_hwsim_flush,
2019         .get_tsf = mac80211_hwsim_get_tsf,
2020         .set_tsf = mac80211_hwsim_set_tsf,
2021         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2022         .get_et_stats = mac80211_hwsim_get_et_stats,
2023         .get_et_strings = mac80211_hwsim_get_et_strings,
2024 };
2025
2026 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2027
2028 static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
2029                                        const struct ieee80211_regdomain *regd,
2030                                        bool reg_strict, bool p2p_device,
2031                                        bool use_chanctx, bool destroy_on_close,
2032                                        u32 portid, const char *hwname,
2033                                        bool no_vif)
2034 {
2035         int err;
2036         u8 addr[ETH_ALEN];
2037         struct mac80211_hwsim_data *data;
2038         struct ieee80211_hw *hw;
2039         enum ieee80211_band band;
2040         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2041         int idx;
2042
2043         if (WARN_ON(channels > 1 && !use_chanctx))
2044                 return -EINVAL;
2045
2046         spin_lock_bh(&hwsim_radio_lock);
2047         idx = hwsim_radio_idx++;
2048         spin_unlock_bh(&hwsim_radio_lock);
2049
2050         if (use_chanctx)
2051                 ops = &mac80211_hwsim_mchan_ops;
2052         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, hwname);
2053         if (!hw) {
2054                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2055                 err = -ENOMEM;
2056                 goto failed;
2057         }
2058         data = hw->priv;
2059         data->hw = hw;
2060
2061         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2062         if (IS_ERR(data->dev)) {
2063                 printk(KERN_DEBUG
2064                        "mac80211_hwsim: device_create failed (%ld)\n",
2065                        PTR_ERR(data->dev));
2066                 err = -ENOMEM;
2067                 goto failed_drvdata;
2068         }
2069         data->dev->driver = &mac80211_hwsim_driver.driver;
2070         err = device_bind_driver(data->dev);
2071         if (err != 0) {
2072                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2073                        err);
2074                 goto failed_hw;
2075         }
2076
2077         skb_queue_head_init(&data->pending);
2078
2079         SET_IEEE80211_DEV(hw, data->dev);
2080         memset(addr, 0, ETH_ALEN);
2081         addr[0] = 0x02;
2082         addr[3] = idx >> 8;
2083         addr[4] = idx;
2084         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2085         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2086         data->addresses[1].addr[0] |= 0x40;
2087         hw->wiphy->n_addresses = 2;
2088         hw->wiphy->addresses = data->addresses;
2089
2090         data->channels = channels;
2091         data->use_chanctx = use_chanctx;
2092         data->idx = idx;
2093         data->destroy_on_close = destroy_on_close;
2094         data->portid = portid;
2095
2096         if (data->use_chanctx) {
2097                 hw->wiphy->max_scan_ssids = 255;
2098                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2099                 hw->wiphy->max_remain_on_channel_duration = 1000;
2100                 /* For channels > 1 DFS is not allowed */
2101                 hw->wiphy->n_iface_combinations = 1;
2102                 hw->wiphy->iface_combinations = &data->if_combination;
2103                 if (p2p_device)
2104                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2105                 else
2106                         data->if_combination = hwsim_if_comb[0];
2107                 data->if_combination.num_different_channels = data->channels;
2108         } else if (p2p_device) {
2109                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2110                 hw->wiphy->n_iface_combinations =
2111                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2112         } else {
2113                 hw->wiphy->iface_combinations = hwsim_if_comb;
2114                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2115         }
2116
2117         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2118         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2119
2120         hw->queues = 5;
2121         hw->offchannel_tx_hw_queue = 4;
2122         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2123                                      BIT(NL80211_IFTYPE_AP) |
2124                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2125                                      BIT(NL80211_IFTYPE_P2P_GO) |
2126                                      BIT(NL80211_IFTYPE_ADHOC) |
2127                                      BIT(NL80211_IFTYPE_MESH_POINT);
2128
2129         if (p2p_device)
2130                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2131
2132         hw->flags = IEEE80211_HW_MFP_CAPABLE |
2133                     IEEE80211_HW_SIGNAL_DBM |
2134                     IEEE80211_HW_AMPDU_AGGREGATION |
2135                     IEEE80211_HW_WANT_MONITOR_VIF |
2136                     IEEE80211_HW_QUEUE_CONTROL |
2137                     IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2138                     IEEE80211_HW_CHANCTX_STA_CSA;
2139         if (rctbl)
2140                 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2141
2142         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2143                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2144                             WIPHY_FLAG_AP_UAPSD |
2145                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2146         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2147                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2148                                NL80211_FEATURE_STATIC_SMPS |
2149                                NL80211_FEATURE_DYNAMIC_SMPS;
2150
2151         /* ask mac80211 to reserve space for magic */
2152         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2153         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2154         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2155
2156         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2157                 sizeof(hwsim_channels_2ghz));
2158         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2159                 sizeof(hwsim_channels_5ghz));
2160         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2161
2162         for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2163                 struct ieee80211_supported_band *sband = &data->bands[band];
2164                 switch (band) {
2165                 case IEEE80211_BAND_2GHZ:
2166                         sband->channels = data->channels_2ghz;
2167                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2168                         sband->bitrates = data->rates;
2169                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2170                         break;
2171                 case IEEE80211_BAND_5GHZ:
2172                         sband->channels = data->channels_5ghz;
2173                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2174                         sband->bitrates = data->rates + 4;
2175                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2176                         break;
2177                 default:
2178                         continue;
2179                 }
2180
2181                 sband->ht_cap.ht_supported = true;
2182                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2183                                     IEEE80211_HT_CAP_GRN_FLD |
2184                                     IEEE80211_HT_CAP_SGI_20 |
2185                                     IEEE80211_HT_CAP_SGI_40 |
2186                                     IEEE80211_HT_CAP_DSSSCCK40;
2187                 sband->ht_cap.ampdu_factor = 0x3;
2188                 sband->ht_cap.ampdu_density = 0x6;
2189                 memset(&sband->ht_cap.mcs, 0,
2190                        sizeof(sband->ht_cap.mcs));
2191                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2192                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2193                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2194
2195                 hw->wiphy->bands[band] = sband;
2196
2197                 sband->vht_cap.vht_supported = true;
2198                 sband->vht_cap.cap =
2199                         IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2200                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2201                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2202                         IEEE80211_VHT_CAP_RXLDPC |
2203                         IEEE80211_VHT_CAP_SHORT_GI_80 |
2204                         IEEE80211_VHT_CAP_SHORT_GI_160 |
2205                         IEEE80211_VHT_CAP_TXSTBC |
2206                         IEEE80211_VHT_CAP_RXSTBC_1 |
2207                         IEEE80211_VHT_CAP_RXSTBC_2 |
2208                         IEEE80211_VHT_CAP_RXSTBC_3 |
2209                         IEEE80211_VHT_CAP_RXSTBC_4 |
2210                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2211                 sband->vht_cap.vht_mcs.rx_mcs_map =
2212                         cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2213                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2214                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2215                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2216                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2217                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2218                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2219                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2220                 sband->vht_cap.vht_mcs.tx_mcs_map =
2221                         sband->vht_cap.vht_mcs.rx_mcs_map;
2222         }
2223
2224         /* By default all radios belong to the first group */
2225         data->group = 1;
2226         mutex_init(&data->mutex);
2227
2228         /* Enable frame retransmissions for lossy channels */
2229         hw->max_rates = 4;
2230         hw->max_rate_tries = 11;
2231
2232         if (reg_strict)
2233                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2234         if (regd) {
2235                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2236                 wiphy_apply_custom_regulatory(hw->wiphy, regd);
2237                 /* give the regulatory workqueue a chance to run */
2238                 schedule_timeout_interruptible(1);
2239         }
2240
2241         if (no_vif)
2242                 hw->flags |= IEEE80211_HW_NO_AUTO_VIF;
2243
2244         err = ieee80211_register_hw(hw);
2245         if (err < 0) {
2246                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2247                        err);
2248                 goto failed_hw;
2249         }
2250
2251         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2252
2253         if (reg_alpha2)
2254                 regulatory_hint(hw->wiphy, reg_alpha2);
2255
2256         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2257         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2258         debugfs_create_file("group", 0666, data->debugfs, data,
2259                             &hwsim_fops_group);
2260         if (!data->use_chanctx)
2261                 debugfs_create_file("dfs_simulate_radar", 0222,
2262                                     data->debugfs,
2263                                     data, &hwsim_simulate_radar);
2264
2265         tasklet_hrtimer_init(&data->beacon_timer,
2266                              mac80211_hwsim_beacon,
2267                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2268
2269         spin_lock_bh(&hwsim_radio_lock);
2270         list_add_tail(&data->list, &hwsim_radios);
2271         spin_unlock_bh(&hwsim_radio_lock);
2272
2273         return idx;
2274
2275 failed_hw:
2276         device_unregister(data->dev);
2277 failed_drvdata:
2278         ieee80211_free_hw(hw);
2279 failed:
2280         return err;
2281 }
2282
2283 static void mac80211_hwsim_destroy_radio(struct mac80211_hwsim_data *data)
2284 {
2285         debugfs_remove_recursive(data->debugfs);
2286         ieee80211_unregister_hw(data->hw);
2287         device_release_driver(data->dev);
2288         device_unregister(data->dev);
2289         ieee80211_free_hw(data->hw);
2290 }
2291
2292 static void mac80211_hwsim_free(void)
2293 {
2294         struct mac80211_hwsim_data *data;
2295
2296         spin_lock_bh(&hwsim_radio_lock);
2297         while ((data = list_first_entry_or_null(&hwsim_radios,
2298                                                 struct mac80211_hwsim_data,
2299                                                 list))) {
2300                 list_del(&data->list);
2301                 spin_unlock_bh(&hwsim_radio_lock);
2302                 mac80211_hwsim_destroy_radio(data);
2303                 spin_lock_bh(&hwsim_radio_lock);
2304         }
2305         spin_unlock_bh(&hwsim_radio_lock);
2306         class_destroy(hwsim_class);
2307 }
2308
2309 static const struct net_device_ops hwsim_netdev_ops = {
2310         .ndo_start_xmit         = hwsim_mon_xmit,
2311         .ndo_change_mtu         = eth_change_mtu,
2312         .ndo_set_mac_address    = eth_mac_addr,
2313         .ndo_validate_addr      = eth_validate_addr,
2314 };
2315
2316 static void hwsim_mon_setup(struct net_device *dev)
2317 {
2318         dev->netdev_ops = &hwsim_netdev_ops;
2319         dev->destructor = free_netdev;
2320         ether_setup(dev);
2321         dev->tx_queue_len = 0;
2322         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2323         memset(dev->dev_addr, 0, ETH_ALEN);
2324         dev->dev_addr[0] = 0x12;
2325 }
2326
2327 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2328 {
2329         struct mac80211_hwsim_data *data;
2330         bool _found = false;
2331
2332         spin_lock_bh(&hwsim_radio_lock);
2333         list_for_each_entry(data, &hwsim_radios, list) {
2334                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2335                         _found = true;
2336                         break;
2337                 }
2338         }
2339         spin_unlock_bh(&hwsim_radio_lock);
2340
2341         if (!_found)
2342                 return NULL;
2343
2344         return data;
2345 }
2346
2347 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2348                                            struct genl_info *info)
2349 {
2350
2351         struct ieee80211_hdr *hdr;
2352         struct mac80211_hwsim_data *data2;
2353         struct ieee80211_tx_info *txi;
2354         struct hwsim_tx_rate *tx_attempts;
2355         unsigned long ret_skb_ptr;
2356         struct sk_buff *skb, *tmp;
2357         const u8 *src;
2358         unsigned int hwsim_flags;
2359         int i;
2360         bool found = false;
2361
2362         if (info->snd_portid != wmediumd_portid)
2363                 return -EINVAL;
2364
2365         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2366             !info->attrs[HWSIM_ATTR_FLAGS] ||
2367             !info->attrs[HWSIM_ATTR_COOKIE] ||
2368             !info->attrs[HWSIM_ATTR_TX_INFO])
2369                 goto out;
2370
2371         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2372         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2373         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2374
2375         data2 = get_hwsim_data_ref_from_addr(src);
2376         if (!data2)
2377                 goto out;
2378
2379         /* look for the skb matching the cookie passed back from user */
2380         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2381                 if ((unsigned long)skb == ret_skb_ptr) {
2382                         skb_unlink(skb, &data2->pending);
2383                         found = true;
2384                         break;
2385                 }
2386         }
2387
2388         /* not found */
2389         if (!found)
2390                 goto out;
2391
2392         /* Tx info received because the frame was broadcasted on user space,
2393          so we get all the necessary info: tx attempts and skb control buff */
2394
2395         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2396                        info->attrs[HWSIM_ATTR_TX_INFO]);
2397
2398         /* now send back TX status */
2399         txi = IEEE80211_SKB_CB(skb);
2400
2401         ieee80211_tx_info_clear_status(txi);
2402
2403         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2404                 txi->status.rates[i].idx = tx_attempts[i].idx;
2405                 txi->status.rates[i].count = tx_attempts[i].count;
2406                 /*txi->status.rates[i].flags = 0;*/
2407         }
2408
2409         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2410
2411         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2412            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2413                 if (skb->len >= 16) {
2414                         hdr = (struct ieee80211_hdr *) skb->data;
2415                         mac80211_hwsim_monitor_ack(data2->channel,
2416                                                    hdr->addr2);
2417                 }
2418                 txi->flags |= IEEE80211_TX_STAT_ACK;
2419         }
2420         ieee80211_tx_status_irqsafe(data2->hw, skb);
2421         return 0;
2422 out:
2423         return -EINVAL;
2424
2425 }
2426
2427 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2428                                           struct genl_info *info)
2429 {
2430         struct mac80211_hwsim_data *data2;
2431         struct ieee80211_rx_status rx_status;
2432         const u8 *dst;
2433         int frame_data_len;
2434         void *frame_data;
2435         struct sk_buff *skb = NULL;
2436
2437         if (info->snd_portid != wmediumd_portid)
2438                 return -EINVAL;
2439
2440         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2441             !info->attrs[HWSIM_ATTR_FRAME] ||
2442             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2443             !info->attrs[HWSIM_ATTR_SIGNAL])
2444                 goto out;
2445
2446         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2447         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2448         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2449
2450         /* Allocate new skb here */
2451         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2452         if (skb == NULL)
2453                 goto err;
2454
2455         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2456                 goto err;
2457
2458         /* Copy the data */
2459         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2460
2461         data2 = get_hwsim_data_ref_from_addr(dst);
2462         if (!data2)
2463                 goto out;
2464
2465         /* check if radio is configured properly */
2466
2467         if (data2->idle || !data2->started)
2468                 goto out;
2469
2470         /* A frame is received from user space */
2471         memset(&rx_status, 0, sizeof(rx_status));
2472         /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2473          * packets?
2474          */
2475         rx_status.freq = data2->channel->center_freq;
2476         rx_status.band = data2->channel->band;
2477         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2478         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2479
2480         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2481         data2->rx_pkts++;
2482         data2->rx_bytes += skb->len;
2483         ieee80211_rx_irqsafe(data2->hw, skb);
2484
2485         return 0;
2486 err:
2487         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2488 out:
2489         dev_kfree_skb(skb);
2490         return -EINVAL;
2491 }
2492
2493 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2494                                       struct genl_info *info)
2495 {
2496         struct mac80211_hwsim_data *data;
2497         int chans = 1;
2498
2499         spin_lock_bh(&hwsim_radio_lock);
2500         list_for_each_entry(data, &hwsim_radios, list)
2501                 chans = max(chans, data->channels);
2502         spin_unlock_bh(&hwsim_radio_lock);
2503
2504         /* In the future we should revise the userspace API and allow it
2505          * to set a flag that it does support multi-channel, then we can
2506          * let this pass conditionally on the flag.
2507          * For current userspace, prohibit it since it won't work right.
2508          */
2509         if (chans > 1)
2510                 return -EOPNOTSUPP;
2511
2512         if (wmediumd_portid)
2513                 return -EBUSY;
2514
2515         wmediumd_portid = info->snd_portid;
2516
2517         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2518                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2519
2520         return 0;
2521 }
2522
2523 static int hwsim_create_radio_nl(struct sk_buff *msg, struct genl_info *info)
2524 {
2525         unsigned int chans = channels;
2526         const char *alpha2 = NULL;
2527         const struct ieee80211_regdomain *regd = NULL;
2528         bool reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2529         bool p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2530         bool destroy_on_close = info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2531         bool use_chanctx;
2532         bool no_vif = false;
2533         const char *hwname = NULL;
2534
2535         if (info->attrs[HWSIM_ATTR_CHANNELS])
2536                 chans = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2537
2538         if (info->attrs[HWSIM_ATTR_NO_VIF])
2539                 no_vif = true;
2540
2541         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2542                 hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2543
2544         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2545                 use_chanctx = true;
2546         else
2547                 use_chanctx = (chans > 1);
2548
2549         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2550                 alpha2 = nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2551
2552         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2553                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2554
2555                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2556                         return -EINVAL;
2557                 regd = hwsim_world_regdom_custom[idx];
2558         }
2559
2560         return mac80211_hwsim_create_radio(chans, alpha2, regd, reg_strict,
2561                                            p2p_device, use_chanctx,
2562                                            destroy_on_close, info->snd_portid,
2563                                            hwname, no_vif);
2564 }
2565
2566 static int hwsim_destroy_radio_nl(struct sk_buff *msg, struct genl_info *info)
2567 {
2568         struct mac80211_hwsim_data *data;
2569         s64 idx = -1;
2570         const char *hwname = NULL;
2571
2572         if (info->attrs[HWSIM_ATTR_RADIO_ID])
2573                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2574         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2575                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2576         else
2577                 return -EINVAL;
2578
2579         spin_lock_bh(&hwsim_radio_lock);
2580         list_for_each_entry(data, &hwsim_radios, list) {
2581                 if (idx >= 0) {
2582                         if (data->idx != idx)
2583                                 continue;
2584                 } else {
2585                         if (hwname &&
2586                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
2587                                 continue;
2588                 }
2589
2590                 list_del(&data->list);
2591                 spin_unlock_bh(&hwsim_radio_lock);
2592                 mac80211_hwsim_destroy_radio(data);
2593                 return 0;
2594         }
2595         spin_unlock_bh(&hwsim_radio_lock);
2596
2597         return -ENODEV;
2598 }
2599
2600 /* Generic Netlink operations array */
2601 static const struct genl_ops hwsim_ops[] = {
2602         {
2603                 .cmd = HWSIM_CMD_REGISTER,
2604                 .policy = hwsim_genl_policy,
2605                 .doit = hwsim_register_received_nl,
2606                 .flags = GENL_ADMIN_PERM,
2607         },
2608         {
2609                 .cmd = HWSIM_CMD_FRAME,
2610                 .policy = hwsim_genl_policy,
2611                 .doit = hwsim_cloned_frame_received_nl,
2612         },
2613         {
2614                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2615                 .policy = hwsim_genl_policy,
2616                 .doit = hwsim_tx_info_frame_received_nl,
2617         },
2618         {
2619                 .cmd = HWSIM_CMD_CREATE_RADIO,
2620                 .policy = hwsim_genl_policy,
2621                 .doit = hwsim_create_radio_nl,
2622                 .flags = GENL_ADMIN_PERM,
2623         },
2624         {
2625                 .cmd = HWSIM_CMD_DESTROY_RADIO,
2626                 .policy = hwsim_genl_policy,
2627                 .doit = hwsim_destroy_radio_nl,
2628                 .flags = GENL_ADMIN_PERM,
2629         },
2630 };
2631
2632 static void destroy_radio(struct work_struct *work)
2633 {
2634         struct mac80211_hwsim_data *data =
2635                 container_of(work, struct mac80211_hwsim_data, destroy_work);
2636
2637         mac80211_hwsim_destroy_radio(data);
2638 }
2639
2640 static void remove_user_radios(u32 portid)
2641 {
2642         struct mac80211_hwsim_data *entry, *tmp;
2643
2644         spin_lock_bh(&hwsim_radio_lock);
2645         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
2646                 if (entry->destroy_on_close && entry->portid == portid) {
2647                         list_del(&entry->list);
2648                         INIT_WORK(&entry->destroy_work, destroy_radio);
2649                         schedule_work(&entry->destroy_work);
2650                 }
2651         }
2652         spin_unlock_bh(&hwsim_radio_lock);
2653 }
2654
2655 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2656                                          unsigned long state,
2657                                          void *_notify)
2658 {
2659         struct netlink_notify *notify = _notify;
2660
2661         if (state != NETLINK_URELEASE)
2662                 return NOTIFY_DONE;
2663
2664         remove_user_radios(notify->portid);
2665
2666         if (notify->portid == wmediumd_portid) {
2667                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2668                        " socket, switching to perfect channel medium\n");
2669                 wmediumd_portid = 0;
2670         }
2671         return NOTIFY_DONE;
2672
2673 }
2674
2675 static struct notifier_block hwsim_netlink_notifier = {
2676         .notifier_call = mac80211_hwsim_netlink_notify,
2677 };
2678
2679 static int hwsim_init_netlink(void)
2680 {
2681         int rc;
2682
2683         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2684
2685         rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2686         if (rc)
2687                 goto failure;
2688
2689         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2690         if (rc)
2691                 goto failure;
2692
2693         return 0;
2694
2695 failure:
2696         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2697         return -EINVAL;
2698 }
2699
2700 static void hwsim_exit_netlink(void)
2701 {
2702         /* unregister the notifier */
2703         netlink_unregister_notifier(&hwsim_netlink_notifier);
2704         /* unregister the family */
2705         genl_unregister_family(&hwsim_genl_family);
2706 }
2707
2708 static int __init init_mac80211_hwsim(void)
2709 {
2710         int i, err;
2711
2712         if (radios < 0 || radios > 100)
2713                 return -EINVAL;
2714
2715         if (channels < 1)
2716                 return -EINVAL;
2717
2718         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
2719         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
2720         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
2721         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
2722         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
2723         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
2724         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
2725         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
2726         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
2727         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
2728         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
2729                 mac80211_hwsim_assign_vif_chanctx;
2730         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
2731                 mac80211_hwsim_unassign_vif_chanctx;
2732
2733         spin_lock_init(&hwsim_radio_lock);
2734         INIT_LIST_HEAD(&hwsim_radios);
2735
2736         err = platform_driver_register(&mac80211_hwsim_driver);
2737         if (err)
2738                 return err;
2739
2740         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2741         if (IS_ERR(hwsim_class)) {
2742                 err = PTR_ERR(hwsim_class);
2743                 goto out_unregister_driver;
2744         }
2745
2746         for (i = 0; i < radios; i++) {
2747                 const char *reg_alpha2 = NULL;
2748                 const struct ieee80211_regdomain *regd = NULL;
2749                 bool reg_strict = false;
2750
2751                 switch (regtest) {
2752                 case HWSIM_REGTEST_DIFF_COUNTRY:
2753                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2754                                 reg_alpha2 = hwsim_alpha2s[i];
2755                         break;
2756                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2757                         if (!i)
2758                                 reg_alpha2 = hwsim_alpha2s[0];
2759                         break;
2760                 case HWSIM_REGTEST_STRICT_ALL:
2761                         reg_strict = true;
2762                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2763                         reg_alpha2 = hwsim_alpha2s[0];
2764                         break;
2765                 case HWSIM_REGTEST_WORLD_ROAM:
2766                         if (i == 0)
2767                                 regd = &hwsim_world_regdom_custom_01;
2768                         break;
2769                 case HWSIM_REGTEST_CUSTOM_WORLD:
2770                         regd = &hwsim_world_regdom_custom_01;
2771                         break;
2772                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2773                         if (i == 0)
2774                                 regd = &hwsim_world_regdom_custom_01;
2775                         else if (i == 1)
2776                                 regd = &hwsim_world_regdom_custom_02;
2777                         break;
2778                 case HWSIM_REGTEST_STRICT_FOLLOW:
2779                         if (i == 0) {
2780                                 reg_strict = true;
2781                                 reg_alpha2 = hwsim_alpha2s[0];
2782                         }
2783                         break;
2784                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2785                         if (i == 0) {
2786                                 reg_strict = true;
2787                                 reg_alpha2 = hwsim_alpha2s[0];
2788                         } else if (i == 1) {
2789                                 reg_alpha2 = hwsim_alpha2s[1];
2790                         }
2791                         break;
2792                 case HWSIM_REGTEST_ALL:
2793                         switch (i) {
2794                         case 0:
2795                                 regd = &hwsim_world_regdom_custom_01;
2796                                 break;
2797                         case 1:
2798                                 regd = &hwsim_world_regdom_custom_02;
2799                                 break;
2800                         case 2:
2801                                 reg_alpha2 = hwsim_alpha2s[0];
2802                                 break;
2803                         case 3:
2804                                 reg_alpha2 = hwsim_alpha2s[1];
2805                                 break;
2806                         case 4:
2807                                 reg_strict = true;
2808                                 reg_alpha2 = hwsim_alpha2s[2];
2809                                 break;
2810                         }
2811                         break;
2812                 default:
2813                         break;
2814                 }
2815
2816                 err = mac80211_hwsim_create_radio(channels, reg_alpha2,
2817                                                   regd, reg_strict,
2818                                                   support_p2p_device,
2819                                                   channels > 1, false, 0, NULL,
2820                                                   false);
2821                 if (err < 0)
2822                         goto out_free_radios;
2823         }
2824
2825         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
2826                                  hwsim_mon_setup);
2827         if (hwsim_mon == NULL) {
2828                 err = -ENOMEM;
2829                 goto out_free_radios;
2830         }
2831
2832         rtnl_lock();
2833         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2834         if (err < 0) {
2835                 rtnl_unlock();
2836                 goto out_free_radios;
2837         }
2838
2839         err = register_netdevice(hwsim_mon);
2840         if (err < 0) {
2841                 rtnl_unlock();
2842                 goto out_free_mon;
2843         }
2844         rtnl_unlock();
2845
2846         err = hwsim_init_netlink();
2847         if (err < 0)
2848                 goto out_free_mon;
2849
2850         return 0;
2851
2852 out_free_mon:
2853         free_netdev(hwsim_mon);
2854 out_free_radios:
2855         mac80211_hwsim_free();
2856 out_unregister_driver:
2857         platform_driver_unregister(&mac80211_hwsim_driver);
2858         return err;
2859 }
2860 module_init(init_mac80211_hwsim);
2861
2862 static void __exit exit_mac80211_hwsim(void)
2863 {
2864         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2865
2866         hwsim_exit_netlink();
2867
2868         mac80211_hwsim_free();
2869         unregister_netdev(hwsim_mon);
2870         platform_driver_unregister(&mac80211_hwsim_driver);
2871 }
2872 module_exit(exit_mac80211_hwsim);