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