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 <net/net_namespace.h>
  34 #include <net/netns/generic.h>
  35 #include "mac80211_hwsim.h"
  36
  37 #define WARN_QUEUE 100
  38 #define MAX_QUEUE 200
  39
  40 MODULE_AUTHOR("Jouni Malinen");
  41 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  42 MODULE_LICENSE("GPL");
  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 int hwsim_net_id;
 254
 255 static int hwsim_netgroup;
 256
 257 struct hwsim_net {
 258         int netgroup;
 259         u32 wmediumd;
 260 };
 261
 262 static inline int hwsim_net_get_netgroup(struct net *net)
 263 {
 264         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 265
 266         return hwsim_net->netgroup;
 267 }
 268
 269 static inline void hwsim_net_set_netgroup(struct net *net)
 270 {
 271         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 272
 273         hwsim_net->netgroup = hwsim_netgroup++;
 274 }
 275
 276 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 277 {
 278         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 279
 280         return hwsim_net->wmediumd;
 281 }
 282
 283 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 284 {
 285         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 286
 287         hwsim_net->wmediumd = portid;
 288 }
 289
 290 static struct class *hwsim_class;
 291
 292 static struct net_device *hwsim_mon; /* global monitor netdev */
 293
 294 #define CHAN2G(_freq)  { \
 295         .band = NL80211_BAND_2GHZ, \
 296         .center_freq = (_freq), \
 297         .hw_value = (_freq), \
 298         .max_power = 20, \
 299 }
 300
 301 #define CHAN5G(_freq) { \
 302         .band = NL80211_BAND_5GHZ, \
 303         .center_freq = (_freq), \
 304         .hw_value = (_freq), \
 305         .max_power = 20, \
 306 }
 307
 308 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 309         CHAN2G(2412), /* Channel 1 */
 310         CHAN2G(2417), /* Channel 2 */
 311         CHAN2G(2422), /* Channel 3 */
 312         CHAN2G(2427), /* Channel 4 */
 313         CHAN2G(2432), /* Channel 5 */
 314         CHAN2G(2437), /* Channel 6 */
 315         CHAN2G(2442), /* Channel 7 */
 316         CHAN2G(2447), /* Channel 8 */
 317         CHAN2G(2452), /* Channel 9 */
 318         CHAN2G(2457), /* Channel 10 */
 319         CHAN2G(2462), /* Channel 11 */
 320         CHAN2G(2467), /* Channel 12 */
 321         CHAN2G(2472), /* Channel 13 */
 322         CHAN2G(2484), /* Channel 14 */
 323 };
 324
 325 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 326         CHAN5G(5180), /* Channel 36 */
 327         CHAN5G(5200), /* Channel 40 */
 328         CHAN5G(5220), /* Channel 44 */
 329         CHAN5G(5240), /* Channel 48 */
 330
 331         CHAN5G(5260), /* Channel 52 */
 332         CHAN5G(5280), /* Channel 56 */
 333         CHAN5G(5300), /* Channel 60 */
 334         CHAN5G(5320), /* Channel 64 */
 335
 336         CHAN5G(5500), /* Channel 100 */
 337         CHAN5G(5520), /* Channel 104 */
 338         CHAN5G(5540), /* Channel 108 */
 339         CHAN5G(5560), /* Channel 112 */
 340         CHAN5G(5580), /* Channel 116 */
 341         CHAN5G(5600), /* Channel 120 */
 342         CHAN5G(5620), /* Channel 124 */
 343         CHAN5G(5640), /* Channel 128 */
 344         CHAN5G(5660), /* Channel 132 */
 345         CHAN5G(5680), /* Channel 136 */
 346         CHAN5G(5700), /* Channel 140 */
 347
 348         CHAN5G(5745), /* Channel 149 */
 349         CHAN5G(5765), /* Channel 153 */
 350         CHAN5G(5785), /* Channel 157 */
 351         CHAN5G(5805), /* Channel 161 */
 352         CHAN5G(5825), /* Channel 165 */
 353 };
 354
 355 static const struct ieee80211_rate hwsim_rates[] = {
 356         { .bitrate = 10 },
 357         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 358         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 359         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 360         { .bitrate = 60 },
 361         { .bitrate = 90 },
 362         { .bitrate = 120 },
 363         { .bitrate = 180 },
 364         { .bitrate = 240 },
 365         { .bitrate = 360 },
 366         { .bitrate = 480 },
 367         { .bitrate = 540 }
 368 };
 369
 370 #define OUI_QCA 0x001374
 371 #define QCA_NL80211_SUBCMD_TEST 1
 372 enum qca_nl80211_vendor_subcmds {
 373         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 374         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 375 };
 376
 377 static const struct nla_policy
 378 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 379         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 380 };
 381
 382 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 383                                           struct wireless_dev *wdev,
 384                                           const void *data, int data_len)
 385 {
 386         struct sk_buff *skb;
 387         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 388         int err;
 389         u32 val;
 390
 391         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
 392                         hwsim_vendor_test_policy);
 393         if (err)
 394                 return err;
 395         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 396                 return -EINVAL;
 397         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 398         wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
 399
 400         /* Send a vendor event as a test. Note that this would not normally be
 401          * done within a command handler, but rather, based on some other
 402          * trigger. For simplicity, this command is used to trigger the event
 403          * here.
 404          *
 405          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 406          */
 407         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 408         if (skb) {
 409                 /* skb_put() or nla_put() will fill up data within
 410                  * NL80211_ATTR_VENDOR_DATA.
 411                  */
 412
 413                 /* Add vendor data */
 414                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 415
 416                 /* Send the event - this will call nla_nest_end() */
 417                 cfg80211_vendor_event(skb, GFP_KERNEL);
 418         }
 419
 420         /* Send a response to the command */
 421         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 422         if (!skb)
 423                 return -ENOMEM;
 424
 425         /* skb_put() or nla_put() will fill up data within
 426          * NL80211_ATTR_VENDOR_DATA
 427          */
 428         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 429
 430         return cfg80211_vendor_cmd_reply(skb);
 431 }
 432
 433 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 434         {
 435                 .info = { .vendor_id = OUI_QCA,
 436                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 437                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 438                 .doit = mac80211_hwsim_vendor_cmd_test,
 439         }
 440 };
 441
 442 /* Advertise support vendor specific events */
 443 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 444         { .vendor_id = OUI_QCA, .subcmd = 1 },
 445 };
 446
 447 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 448         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 449         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 450                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 451 #ifdef CONFIG_MAC80211_MESH
 452                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 453 #endif
 454                                  BIT(NL80211_IFTYPE_AP) |
 455                                  BIT(NL80211_IFTYPE_P2P_GO) },
 456         /* must be last, see hwsim_if_comb */
 457         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 458 };
 459
 460 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 461         {
 462                 .limits = hwsim_if_limits,
 463                 /* remove the last entry which is P2P_DEVICE */
 464                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 465                 .max_interfaces = 2048,
 466                 .num_different_channels = 1,
 467                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 468                                        BIT(NL80211_CHAN_WIDTH_20) |
 469                                        BIT(NL80211_CHAN_WIDTH_40) |
 470                                        BIT(NL80211_CHAN_WIDTH_80) |
 471                                        BIT(NL80211_CHAN_WIDTH_160),
 472         },
 473 };
 474
 475 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 476         {
 477                 .limits = hwsim_if_limits,
 478                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 479                 .max_interfaces = 2048,
 480                 .num_different_channels = 1,
 481                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 482                                        BIT(NL80211_CHAN_WIDTH_20) |
 483                                        BIT(NL80211_CHAN_WIDTH_40) |
 484                                        BIT(NL80211_CHAN_WIDTH_80) |
 485                                        BIT(NL80211_CHAN_WIDTH_160),
 486         },
 487 };
 488
 489 static spinlock_t hwsim_radio_lock;
 490 static LIST_HEAD(hwsim_radios);
 491 static int hwsim_radio_idx;
 492
 493 static struct platform_driver mac80211_hwsim_driver = {
 494         .driver = {
 495                 .name = "mac80211_hwsim",
 496         },
 497 };
 498
 499 struct mac80211_hwsim_data {
 500         struct list_head list;
 501         struct ieee80211_hw *hw;
 502         struct device *dev;
 503         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 504         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 505         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 506         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 507         struct ieee80211_iface_combination if_combination;
 508
 509         struct mac_address addresses[2];
 510         int channels, idx;
 511         bool use_chanctx;
 512         bool destroy_on_close;
 513         struct work_struct destroy_work;
 514         u32 portid;
 515         char alpha2[2];
 516         const struct ieee80211_regdomain *regd;
 517
 518         struct ieee80211_channel *tmp_chan;
 519         struct ieee80211_channel *roc_chan;
 520         u32 roc_duration;
 521         struct delayed_work roc_start;
 522         struct delayed_work roc_done;
 523         struct delayed_work hw_scan;
 524         struct cfg80211_scan_request *hw_scan_request;
 525         struct ieee80211_vif *hw_scan_vif;
 526         int scan_chan_idx;
 527         u8 scan_addr[ETH_ALEN];
 528
 529         struct ieee80211_channel *channel;
 530         u64 beacon_int  /* beacon interval in us */;
 531         unsigned int rx_filter;
 532         bool started, idle, scanning;
 533         struct mutex mutex;
 534         struct tasklet_hrtimer beacon_timer;
 535         enum ps_mode {
 536                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 537         } ps;
 538         bool ps_poll_pending;
 539         struct dentry *debugfs;
 540
 541         uintptr_t pending_cookie;
 542         struct sk_buff_head pending;    /* packets pending */
 543         /*
 544          * Only radios in the same group can communicate together (the
 545          * channel has to match too). Each bit represents a group. A
 546          * radio can be in more than one group.
 547          */
 548         u64 group;
 549
 550         /* group shared by radios created in the same netns */
 551         int netgroup;
 552         /* wmediumd portid responsible for netgroup of this radio */
 553         u32 wmediumd;
 554
 555         /* difference between this hw's clock and the real clock, in usecs */
 556         s64 tsf_offset;
 557         s64 bcn_delta;
 558         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 559         u64 abs_bcn_ts;
 560
 561         /* Stats */
 562         u64 tx_pkts;
 563         u64 rx_pkts;
 564         u64 tx_bytes;
 565         u64 rx_bytes;
 566         u64 tx_dropped;
 567         u64 tx_failed;
 568 };
 569
 570
 571 struct hwsim_radiotap_hdr {
 572         struct ieee80211_radiotap_header hdr;
 573         __le64 rt_tsft;
 574         u8 rt_flags;
 575         u8 rt_rate;
 576         __le16 rt_channel;
 577         __le16 rt_chbitmask;
 578 } __packed;
 579
 580 struct hwsim_radiotap_ack_hdr {
 581         struct ieee80211_radiotap_header hdr;
 582         u8 rt_flags;
 583         u8 pad;
 584         __le16 rt_channel;
 585         __le16 rt_chbitmask;
 586 } __packed;
 587
 588 /* MAC80211_HWSIM netlinf family */
 589 static struct genl_family hwsim_genl_family = {
 590         .id = GENL_ID_GENERATE,
 591         .hdrsize = 0,
 592         .name = "MAC80211_HWSIM",
 593         .version = 1,
 594         .maxattr = HWSIM_ATTR_MAX,
 595         .netnsok = true,
 596 };
 597
 598 enum hwsim_multicast_groups {
 599         HWSIM_MCGRP_CONFIG,
 600 };
 601
 602 static const struct genl_multicast_group hwsim_mcgrps[] = {
 603         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 604 };
 605
 606 /* MAC80211_HWSIM netlink policy */
 607
 608 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 609         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 610         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 611         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 612                                .len = IEEE80211_MAX_DATA_LEN },
 613         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 614         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 615         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 616         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 617                                  .len = IEEE80211_TX_MAX_RATES *
 618                                         sizeof(struct hwsim_tx_rate)},
 619         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 620         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 621         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 622         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 623         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 624         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 625         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 626         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 627         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 628         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 629         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 630 };
 631
 632 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 633                                     struct sk_buff *skb,
 634                                     struct ieee80211_channel *chan);
 635
 636 /* sysfs attributes */
 637 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 638 {
 639         struct mac80211_hwsim_data *data = dat;
 640         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 641         struct sk_buff *skb;
 642         struct ieee80211_pspoll *pspoll;
 643
 644         if (!vp->assoc)
 645                 return;
 646
 647         wiphy_debug(data->hw->wiphy,
 648                     "%s: send PS-Poll to %pM for aid %d\n",
 649                     __func__, vp->bssid, vp->aid);
 650
 651         skb = dev_alloc_skb(sizeof(*pspoll));
 652         if (!skb)
 653                 return;
 654         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 655         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 656                                             IEEE80211_STYPE_PSPOLL |
 657                                             IEEE80211_FCTL_PM);
 658         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 659         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 660         memcpy(pspoll->ta, mac, ETH_ALEN);
 661
 662         rcu_read_lock();
 663         mac80211_hwsim_tx_frame(data->hw, skb,
 664                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 665         rcu_read_unlock();
 666 }
 667
 668 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 669                                 struct ieee80211_vif *vif, int ps)
 670 {
 671         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 672         struct sk_buff *skb;
 673         struct ieee80211_hdr *hdr;
 674         struct ieee80211_tx_info *cb;
 675
 676         if (!vp->assoc)
 677                 return;
 678
 679         wiphy_debug(data->hw->wiphy,
 680                     "%s: send data::nullfunc to %pM ps=%d\n",
 681                     __func__, vp->bssid, ps);
 682
 683         skb = dev_alloc_skb(sizeof(*hdr));
 684         if (!skb)
 685                 return;
 686         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 687         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 688                                          IEEE80211_STYPE_NULLFUNC |
 689                                          (ps ? IEEE80211_FCTL_PM : 0));
 690         hdr->duration_id = cpu_to_le16(0);
 691         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 692         memcpy(hdr->addr2, mac, ETH_ALEN);
 693         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 694
 695         cb = IEEE80211_SKB_CB(skb);
 696         cb->control.rates[0].count = 1;
 697         cb->control.rates[1].idx = -1;
 698
 699         rcu_read_lock();
 700         mac80211_hwsim_tx_frame(data->hw, skb,
 701                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 702         rcu_read_unlock();
 703 }
 704
 705
 706 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 707                                    struct ieee80211_vif *vif)
 708 {
 709         struct mac80211_hwsim_data *data = dat;
 710         hwsim_send_nullfunc(data, mac, vif, 1);
 711 }
 712
 713 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 714                                       struct ieee80211_vif *vif)
 715 {
 716         struct mac80211_hwsim_data *data = dat;
 717         hwsim_send_nullfunc(data, mac, vif, 0);
 718 }
 719
 720 static int hwsim_fops_ps_read(void *dat, u64 *val)
 721 {
 722         struct mac80211_hwsim_data *data = dat;
 723         *val = data->ps;
 724         return 0;
 725 }
 726
 727 static int hwsim_fops_ps_write(void *dat, u64 val)
 728 {
 729         struct mac80211_hwsim_data *data = dat;
 730         enum ps_mode old_ps;
 731
 732         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 733             val != PS_MANUAL_POLL)
 734                 return -EINVAL;
 735
 736         if (val == PS_MANUAL_POLL) {
 737                 if (data->ps != PS_ENABLED)
 738                         return -EINVAL;
 739                 local_bh_disable();
 740                 ieee80211_iterate_active_interfaces_atomic(
 741                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 742                         hwsim_send_ps_poll, data);
 743                 local_bh_enable();
 744                 return 0;
 745         }
 746         old_ps = data->ps;
 747         data->ps = val;
 748
 749         local_bh_disable();
 750         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 751                 ieee80211_iterate_active_interfaces_atomic(
 752                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 753                         hwsim_send_nullfunc_ps, data);
 754         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 755                 ieee80211_iterate_active_interfaces_atomic(
 756                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 757                         hwsim_send_nullfunc_no_ps, data);
 758         }
 759         local_bh_enable();
 760
 761         return 0;
 762 }
 763
 764 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 765                         "%llu\n");
 766
 767 static int hwsim_write_simulate_radar(void *dat, u64 val)
 768 {
 769         struct mac80211_hwsim_data *data = dat;
 770
 771         ieee80211_radar_detected(data->hw);
 772
 773         return 0;
 774 }
 775
 776 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 777                         hwsim_write_simulate_radar, "%llu\n");
 778
 779 static int hwsim_fops_group_read(void *dat, u64 *val)
 780 {
 781         struct mac80211_hwsim_data *data = dat;
 782         *val = data->group;
 783         return 0;
 784 }
 785
 786 static int hwsim_fops_group_write(void *dat, u64 val)
 787 {
 788         struct mac80211_hwsim_data *data = dat;
 789         data->group = val;
 790         return 0;
 791 }
 792
 793 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 794                         hwsim_fops_group_read, hwsim_fops_group_write,
 795                         "%llx\n");
 796
 797 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 798                                         struct net_device *dev)
 799 {
 800         /* TODO: allow packet injection */
 801         dev_kfree_skb(skb);
 802         return NETDEV_TX_OK;
 803 }
 804
 805 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 806 {
 807         return ktime_to_us(ktime_get_real());
 808 }
 809
 810 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 811 {
 812         u64 now = mac80211_hwsim_get_tsf_raw();
 813         return cpu_to_le64(now + data->tsf_offset);
 814 }
 815
 816 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 817                                   struct ieee80211_vif *vif)
 818 {
 819         struct mac80211_hwsim_data *data = hw->priv;
 820         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 821 }
 822
 823 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 824                 struct ieee80211_vif *vif, u64 tsf)
 825 {
 826         struct mac80211_hwsim_data *data = hw->priv;
 827         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 828         u32 bcn_int = data->beacon_int;
 829         u64 delta = abs(tsf - now);
 830
 831         /* adjust after beaconing with new timestamp at old TBTT */
 832         if (tsf > now) {
 833                 data->tsf_offset += delta;
 834                 data->bcn_delta = do_div(delta, bcn_int);
 835         } else {
 836                 data->tsf_offset -= delta;
 837                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 838         }
 839 }
 840
 841 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 842                                       struct sk_buff *tx_skb,
 843                                       struct ieee80211_channel *chan)
 844 {
 845         struct mac80211_hwsim_data *data = hw->priv;
 846         struct sk_buff *skb;
 847         struct hwsim_radiotap_hdr *hdr;
 848         u16 flags;
 849         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 850         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 851
 852         if (WARN_ON(!txrate))
 853                 return;
 854
 855         if (!netif_running(hwsim_mon))
 856                 return;
 857
 858         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 859         if (skb == NULL)
 860                 return;
 861
 862         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 863         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 864         hdr->hdr.it_pad = 0;
 865         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 866         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 867                                           (1 << IEEE80211_RADIOTAP_RATE) |
 868                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 869                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 870         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 871         hdr->rt_flags = 0;
 872         hdr->rt_rate = txrate->bitrate / 5;
 873         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 874         flags = IEEE80211_CHAN_2GHZ;
 875         if (txrate->flags & IEEE80211_RATE_ERP_G)
 876                 flags |= IEEE80211_CHAN_OFDM;
 877         else
 878                 flags |= IEEE80211_CHAN_CCK;
 879         hdr->rt_chbitmask = cpu_to_le16(flags);
 880
 881         skb->dev = hwsim_mon;
 882         skb_reset_mac_header(skb);
 883         skb->ip_summed = CHECKSUM_UNNECESSARY;
 884         skb->pkt_type = PACKET_OTHERHOST;
 885         skb->protocol = htons(ETH_P_802_2);
 886         memset(skb->cb, 0, sizeof(skb->cb));
 887         netif_rx(skb);
 888 }
 889
 890
 891 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 892                                        const u8 *addr)
 893 {
 894         struct sk_buff *skb;
 895         struct hwsim_radiotap_ack_hdr *hdr;
 896         u16 flags;
 897         struct ieee80211_hdr *hdr11;
 898
 899         if (!netif_running(hwsim_mon))
 900                 return;
 901
 902         skb = dev_alloc_skb(100);
 903         if (skb == NULL)
 904                 return;
 905
 906         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 907         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 908         hdr->hdr.it_pad = 0;
 909         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 910         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 911                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 912         hdr->rt_flags = 0;
 913         hdr->pad = 0;
 914         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 915         flags = IEEE80211_CHAN_2GHZ;
 916         hdr->rt_chbitmask = cpu_to_le16(flags);
 917
 918         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 919         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 920                                            IEEE80211_STYPE_ACK);
 921         hdr11->duration_id = cpu_to_le16(0);
 922         memcpy(hdr11->addr1, addr, ETH_ALEN);
 923
 924         skb->dev = hwsim_mon;
 925         skb_reset_mac_header(skb);
 926         skb->ip_summed = CHECKSUM_UNNECESSARY;
 927         skb->pkt_type = PACKET_OTHERHOST;
 928         skb->protocol = htons(ETH_P_802_2);
 929         memset(skb->cb, 0, sizeof(skb->cb));
 930         netif_rx(skb);
 931 }
 932
 933 struct mac80211_hwsim_addr_match_data {
 934         u8 addr[ETH_ALEN];
 935         bool ret;
 936 };
 937
 938 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 939                                      struct ieee80211_vif *vif)
 940 {
 941         struct mac80211_hwsim_addr_match_data *md = data;
 942
 943         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 944                 md->ret = true;
 945 }
 946
 947 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 948                                       const u8 *addr)
 949 {
 950         struct mac80211_hwsim_addr_match_data md = {
 951                 .ret = false,
 952         };
 953
 954         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 955                 return true;
 956
 957         memcpy(md.addr, addr, ETH_ALEN);
 958
 959         ieee80211_iterate_active_interfaces_atomic(data->hw,
 960                                                    IEEE80211_IFACE_ITER_NORMAL,
 961                                                    mac80211_hwsim_addr_iter,
 962                                                    &md);
 963
 964         return md.ret;
 965 }
 966
 967 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 968                            struct sk_buff *skb)
 969 {
 970         switch (data->ps) {
 971         case PS_DISABLED:
 972                 return true;
 973         case PS_ENABLED:
 974                 return false;
 975         case PS_AUTO_POLL:
 976                 /* TODO: accept (some) Beacons by default and other frames only
 977                  * if pending PS-Poll has been sent */
 978                 return true;
 979         case PS_MANUAL_POLL:
 980                 /* Allow unicast frames to own address if there is a pending
 981                  * PS-Poll */
 982                 if (data->ps_poll_pending &&
 983                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 984                         data->ps_poll_pending = false;
 985                         return true;
 986                 }
 987                 return false;
 988         }
 989
 990         return true;
 991 }
 992
 993 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 994                                   struct sk_buff *skb, int portid)
 995 {
 996         struct net *net;
 997         bool found = false;
 998         int res = -ENOENT;
 999
1000         rcu_read_lock();
1001         for_each_net_rcu(net) {
1002                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1003                         res = genlmsg_unicast(net, skb, portid);
1004                         found = true;
1005                         break;
1006                 }
1007         }
1008         rcu_read_unlock();
1009
1010         if (!found)
1011                 nlmsg_free(skb);
1012
1013         return res;
1014 }
1015
1016 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1017                                        struct sk_buff *my_skb,
1018                                        int dst_portid)
1019 {
1020         struct sk_buff *skb;
1021         struct mac80211_hwsim_data *data = hw->priv;
1022         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1023         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1024         void *msg_head;
1025         unsigned int hwsim_flags = 0;
1026         int i;
1027         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1028         uintptr_t cookie;
1029
1030         if (data->ps != PS_DISABLED)
1031                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1032         /* If the queue contains MAX_QUEUE skb's drop some */
1033         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1034                 /* Droping until WARN_QUEUE level */
1035                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1036                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1037                         data->tx_dropped++;
1038                 }
1039         }
1040
1041         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1042         if (skb == NULL)
1043                 goto nla_put_failure;
1044
1045         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1046                                HWSIM_CMD_FRAME);
1047         if (msg_head == NULL) {
1048                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1049                 goto nla_put_failure;
1050         }
1051
1052         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1053                     ETH_ALEN, data->addresses[1].addr))
1054                 goto nla_put_failure;
1055
1056         /* We get the skb->data */
1057         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1058                 goto nla_put_failure;
1059
1060         /* We get the flags for this transmission, and we translate them to
1061            wmediumd flags  */
1062
1063         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1064                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1065
1066         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1067                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1068
1069         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1070                 goto nla_put_failure;
1071
1072         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1073                 goto nla_put_failure;
1074
1075         /* We get the tx control (rate and retries) info*/
1076
1077         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1078                 tx_attempts[i].idx = info->status.rates[i].idx;
1079                 tx_attempts[i].count = info->status.rates[i].count;
1080         }
1081
1082         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1083                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1084                     tx_attempts))
1085                 goto nla_put_failure;
1086
1087         /* We create a cookie to identify this skb */
1088         data->pending_cookie++;
1089         cookie = data->pending_cookie;
1090         info->rate_driver_data[0] = (void *)cookie;
1091         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1092                 goto nla_put_failure;
1093
1094         genlmsg_end(skb, msg_head);
1095         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1096                 goto err_free_txskb;
1097
1098         /* Enqueue the packet */
1099         skb_queue_tail(&data->pending, my_skb);
1100         data->tx_pkts++;
1101         data->tx_bytes += my_skb->len;
1102         return;
1103
1104 nla_put_failure:
1105         nlmsg_free(skb);
1106 err_free_txskb:
1107         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1108         ieee80211_free_txskb(hw, my_skb);
1109         data->tx_failed++;
1110 }
1111
1112 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1113                                struct ieee80211_channel *c2)
1114 {
1115         if (!c1 || !c2)
1116                 return false;
1117
1118         return c1->center_freq == c2->center_freq;
1119 }
1120
1121 struct tx_iter_data {
1122         struct ieee80211_channel *channel;
1123         bool receive;
1124 };
1125
1126 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1127                                    struct ieee80211_vif *vif)
1128 {
1129         struct tx_iter_data *data = _data;
1130
1131         if (!vif->chanctx_conf)
1132                 return;
1133
1134         if (!hwsim_chans_compat(data->channel,
1135                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1136                 return;
1137
1138         data->receive = true;
1139 }
1140
1141 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1142 {
1143         /*
1144          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1145          * e.g. like this:
1146          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1147          * (but you should use a valid OUI, not that)
1148          *
1149          * If anyone wants to 'donate' a radiotap OUI/subns code
1150          * please send a patch removing this #ifdef and changing
1151          * the values accordingly.
1152          */
1153 #ifdef HWSIM_RADIOTAP_OUI
1154         struct ieee80211_vendor_radiotap *rtap;
1155
1156         /*
1157          * Note that this code requires the headroom in the SKB
1158          * that was allocated earlier.
1159          */
1160         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1161         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1162         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1163         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1164         rtap->subns = 127;
1165
1166         /*
1167          * Radiotap vendor namespaces can (and should) also be
1168          * split into fields by using the standard radiotap
1169          * presence bitmap mechanism. Use just BIT(0) here for
1170          * the presence bitmap.
1171          */
1172         rtap->present = BIT(0);
1173         /* We have 8 bytes of (dummy) data */
1174         rtap->len = 8;
1175         /* For testing, also require it to be aligned */
1176         rtap->align = 8;
1177         /* And also test that padding works, 4 bytes */
1178         rtap->pad = 4;
1179         /* push the data */
1180         memcpy(rtap->data, "ABCDEFGH", 8);
1181         /* make sure to clear padding, mac80211 doesn't */
1182         memset(rtap->data + 8, 0, 4);
1183
1184         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1185 #endif
1186 }
1187
1188 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1189                                           struct sk_buff *skb,
1190                                           struct ieee80211_channel *chan)
1191 {
1192         struct mac80211_hwsim_data *data = hw->priv, *data2;
1193         bool ack = false;
1194         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1195         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1196         struct ieee80211_rx_status rx_status;
1197         u64 now;
1198
1199         memset(&rx_status, 0, sizeof(rx_status));
1200         rx_status.flag |= RX_FLAG_MACTIME_START;
1201         rx_status.freq = chan->center_freq;
1202         rx_status.band = chan->band;
1203         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1204                 rx_status.rate_idx =
1205                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1206                 rx_status.vht_nss =
1207                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1208                 rx_status.flag |= RX_FLAG_VHT;
1209         } else {
1210                 rx_status.rate_idx = info->control.rates[0].idx;
1211                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1212                         rx_status.flag |= RX_FLAG_HT;
1213         }
1214         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1215                 rx_status.flag |= RX_FLAG_40MHZ;
1216         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1217                 rx_status.flag |= RX_FLAG_SHORT_GI;
1218         /* TODO: simulate real signal strength (and optional packet loss) */
1219         rx_status.signal = -50;
1220         if (info->control.vif)
1221                 rx_status.signal += info->control.vif->bss_conf.txpower;
1222
1223         if (data->ps != PS_DISABLED)
1224                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1225
1226         /* release the skb's source info */
1227         skb_orphan(skb);
1228         skb_dst_drop(skb);
1229         skb->mark = 0;
1230         secpath_reset(skb);
1231         nf_reset(skb);
1232
1233         /*
1234          * Get absolute mactime here so all HWs RX at the "same time", and
1235          * absolute TX time for beacon mactime so the timestamp matches.
1236          * Giving beacons a different mactime than non-beacons looks messy, but
1237          * it helps the Toffset be exact and a ~10us mactime discrepancy
1238          * probably doesn't really matter.
1239          */
1240         if (ieee80211_is_beacon(hdr->frame_control) ||
1241             ieee80211_is_probe_resp(hdr->frame_control))
1242                 now = data->abs_bcn_ts;
1243         else
1244                 now = mac80211_hwsim_get_tsf_raw();
1245
1246         /* Copy skb to all enabled radios that are on the current frequency */
1247         spin_lock(&hwsim_radio_lock);
1248         list_for_each_entry(data2, &hwsim_radios, list) {
1249                 struct sk_buff *nskb;
1250                 struct tx_iter_data tx_iter_data = {
1251                         .receive = false,
1252                         .channel = chan,
1253                 };
1254
1255                 if (data == data2)
1256                         continue;
1257
1258                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1259                     !hwsim_ps_rx_ok(data2, skb))
1260                         continue;
1261
1262                 if (!(data->group & data2->group))
1263                         continue;
1264
1265                 if (data->netgroup != data2->netgroup)
1266                         continue;
1267
1268                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1269                     !hwsim_chans_compat(chan, data2->channel)) {
1270                         ieee80211_iterate_active_interfaces_atomic(
1271                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1272                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1273                         if (!tx_iter_data.receive)
1274                                 continue;
1275                 }
1276
1277                 /*
1278                  * reserve some space for our vendor and the normal
1279                  * radiotap header, since we're copying anyway
1280                  */
1281                 if (skb->len < PAGE_SIZE && paged_rx) {
1282                         struct page *page = alloc_page(GFP_ATOMIC);
1283
1284                         if (!page)
1285                                 continue;
1286
1287                         nskb = dev_alloc_skb(128);
1288                         if (!nskb) {
1289                                 __free_page(page);
1290                                 continue;
1291                         }
1292
1293                         memcpy(page_address(page), skb->data, skb->len);
1294                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1295                 } else {
1296                         nskb = skb_copy(skb, GFP_ATOMIC);
1297                         if (!nskb)
1298                                 continue;
1299                 }
1300
1301                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1302                         ack = true;
1303
1304                 rx_status.mactime = now + data2->tsf_offset;
1305
1306                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1307
1308                 mac80211_hwsim_add_vendor_rtap(nskb);
1309
1310                 data2->rx_pkts++;
1311                 data2->rx_bytes += nskb->len;
1312                 ieee80211_rx_irqsafe(data2->hw, nskb);
1313         }
1314         spin_unlock(&hwsim_radio_lock);
1315
1316         return ack;
1317 }
1318
1319 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1320                               struct ieee80211_tx_control *control,
1321                               struct sk_buff *skb)
1322 {
1323         struct mac80211_hwsim_data *data = hw->priv;
1324         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1325         struct ieee80211_hdr *hdr = (void *)skb->data;
1326         struct ieee80211_chanctx_conf *chanctx_conf;
1327         struct ieee80211_channel *channel;
1328         bool ack;
1329         u32 _portid;
1330
1331         if (WARN_ON(skb->len < 10)) {
1332                 /* Should not happen; just a sanity check for addr1 use */
1333                 ieee80211_free_txskb(hw, skb);
1334                 return;
1335         }
1336
1337         if (!data->use_chanctx) {
1338                 channel = data->channel;
1339         } else if (txi->hw_queue == 4) {
1340                 channel = data->tmp_chan;
1341         } else {
1342                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1343                 if (chanctx_conf)
1344                         channel = chanctx_conf->def.chan;
1345                 else
1346                         channel = NULL;
1347         }
1348
1349         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1350                 ieee80211_free_txskb(hw, skb);
1351                 return;
1352         }
1353
1354         if (data->idle && !data->tmp_chan) {
1355                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1356                 ieee80211_free_txskb(hw, skb);
1357                 return;
1358         }
1359
1360         if (txi->control.vif)
1361                 hwsim_check_magic(txi->control.vif);
1362         if (control->sta)
1363                 hwsim_check_sta_magic(control->sta);
1364
1365         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1366                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1367                                        txi->control.rates,
1368                                        ARRAY_SIZE(txi->control.rates));
1369
1370         if (skb->len >= 24 + 8 &&
1371             ieee80211_is_probe_resp(hdr->frame_control)) {
1372                 /* fake header transmission time */
1373                 struct ieee80211_mgmt *mgmt;
1374                 struct ieee80211_rate *txrate;
1375                 u64 ts;
1376
1377                 mgmt = (struct ieee80211_mgmt *)skb->data;
1378                 txrate = ieee80211_get_tx_rate(hw, txi);
1379                 ts = mac80211_hwsim_get_tsf_raw();
1380                 mgmt->u.probe_resp.timestamp =
1381                         cpu_to_le64(ts + data->tsf_offset +
1382                                     24 * 8 * 10 / txrate->bitrate);
1383         }
1384
1385         mac80211_hwsim_monitor_rx(hw, skb, channel);
1386
1387         /* wmediumd mode check */
1388         _portid = ACCESS_ONCE(data->wmediumd);
1389
1390         if (_portid)
1391                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1392
1393         /* NO wmediumd detected, perfect medium simulation */
1394         data->tx_pkts++;
1395         data->tx_bytes += skb->len;
1396         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1397
1398         if (ack && skb->len >= 16)
1399                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1400
1401         ieee80211_tx_info_clear_status(txi);
1402
1403         /* frame was transmitted at most favorable rate at first attempt */
1404         txi->control.rates[0].count = 1;
1405         txi->control.rates[1].idx = -1;
1406
1407         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1408                 txi->flags |= IEEE80211_TX_STAT_ACK;
1409         ieee80211_tx_status_irqsafe(hw, skb);
1410 }
1411
1412
1413 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1414 {
1415         struct mac80211_hwsim_data *data = hw->priv;
1416         wiphy_debug(hw->wiphy, "%s\n", __func__);
1417         data->started = true;
1418         return 0;
1419 }
1420
1421
1422 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1423 {
1424         struct mac80211_hwsim_data *data = hw->priv;
1425         data->started = false;
1426         tasklet_hrtimer_cancel(&data->beacon_timer);
1427         wiphy_debug(hw->wiphy, "%s\n", __func__);
1428 }
1429
1430
1431 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1432                                         struct ieee80211_vif *vif)
1433 {
1434         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1435                     __func__, ieee80211_vif_type_p2p(vif),
1436                     vif->addr);
1437         hwsim_set_magic(vif);
1438
1439         vif->cab_queue = 0;
1440         vif->hw_queue[IEEE80211_AC_VO] = 0;
1441         vif->hw_queue[IEEE80211_AC_VI] = 1;
1442         vif->hw_queue[IEEE80211_AC_BE] = 2;
1443         vif->hw_queue[IEEE80211_AC_BK] = 3;
1444
1445         return 0;
1446 }
1447
1448
1449 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1450                                            struct ieee80211_vif *vif,
1451                                            enum nl80211_iftype newtype,
1452                                            bool newp2p)
1453 {
1454         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1455         wiphy_debug(hw->wiphy,
1456                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1457                     __func__, ieee80211_vif_type_p2p(vif),
1458                     newtype, vif->addr);
1459         hwsim_check_magic(vif);
1460
1461         /*
1462          * interface may change from non-AP to AP in
1463          * which case this needs to be set up again
1464          */
1465         vif->cab_queue = 0;
1466
1467         return 0;
1468 }
1469
1470 static void mac80211_hwsim_remove_interface(
1471         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1472 {
1473         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1474                     __func__, ieee80211_vif_type_p2p(vif),
1475                     vif->addr);
1476         hwsim_check_magic(vif);
1477         hwsim_clear_magic(vif);
1478 }
1479
1480 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1481                                     struct sk_buff *skb,
1482                                     struct ieee80211_channel *chan)
1483 {
1484         struct mac80211_hwsim_data *data = hw->priv;
1485         u32 _pid = ACCESS_ONCE(data->wmediumd);
1486
1487         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1488                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1489                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1490                                        txi->control.rates,
1491                                        ARRAY_SIZE(txi->control.rates));
1492         }
1493
1494         mac80211_hwsim_monitor_rx(hw, skb, chan);
1495
1496         if (_pid)
1497                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1498
1499         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1500         dev_kfree_skb(skb);
1501 }
1502
1503 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1504                                      struct ieee80211_vif *vif)
1505 {
1506         struct mac80211_hwsim_data *data = arg;
1507         struct ieee80211_hw *hw = data->hw;
1508         struct ieee80211_tx_info *info;
1509         struct ieee80211_rate *txrate;
1510         struct ieee80211_mgmt *mgmt;
1511         struct sk_buff *skb;
1512
1513         hwsim_check_magic(vif);
1514
1515         if (vif->type != NL80211_IFTYPE_AP &&
1516             vif->type != NL80211_IFTYPE_MESH_POINT &&
1517             vif->type != NL80211_IFTYPE_ADHOC)
1518                 return;
1519
1520         skb = ieee80211_beacon_get(hw, vif);
1521         if (skb == NULL)
1522                 return;
1523         info = IEEE80211_SKB_CB(skb);
1524         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1525                 ieee80211_get_tx_rates(vif, NULL, skb,
1526                                        info->control.rates,
1527                                        ARRAY_SIZE(info->control.rates));
1528
1529         txrate = ieee80211_get_tx_rate(hw, info);
1530
1531         mgmt = (struct ieee80211_mgmt *) skb->data;
1532         /* fake header transmission time */
1533         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1534         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1535                                                data->tsf_offset +
1536                                                24 * 8 * 10 / txrate->bitrate);
1537
1538         mac80211_hwsim_tx_frame(hw, skb,
1539                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1540
1541         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1542                 ieee80211_csa_finish(vif);
1543 }
1544
1545 static enum hrtimer_restart
1546 mac80211_hwsim_beacon(struct hrtimer *timer)
1547 {
1548         struct mac80211_hwsim_data *data =
1549                 container_of(timer, struct mac80211_hwsim_data,
1550                              beacon_timer.timer);
1551         struct ieee80211_hw *hw = data->hw;
1552         u64 bcn_int = data->beacon_int;
1553         ktime_t next_bcn;
1554
1555         if (!data->started)
1556                 goto out;
1557
1558         ieee80211_iterate_active_interfaces_atomic(
1559                 hw, IEEE80211_IFACE_ITER_NORMAL,
1560                 mac80211_hwsim_beacon_tx, data);
1561
1562         /* beacon at new TBTT + beacon interval */
1563         if (data->bcn_delta) {
1564                 bcn_int -= data->bcn_delta;
1565                 data->bcn_delta = 0;
1566         }
1567
1568         next_bcn = ktime_add(hrtimer_get_expires(timer),
1569                              ns_to_ktime(bcn_int * 1000));
1570         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1571 out:
1572         return HRTIMER_NORESTART;
1573 }
1574
1575 static const char * const hwsim_chanwidths[] = {
1576         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1577         [NL80211_CHAN_WIDTH_20] = "ht20",
1578         [NL80211_CHAN_WIDTH_40] = "ht40",
1579         [NL80211_CHAN_WIDTH_80] = "vht80",
1580         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1581         [NL80211_CHAN_WIDTH_160] = "vht160",
1582 };
1583
1584 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1585 {
1586         struct mac80211_hwsim_data *data = hw->priv;
1587         struct ieee80211_conf *conf = &hw->conf;
1588         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1589                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1590                 [IEEE80211_SMPS_OFF] = "off",
1591                 [IEEE80211_SMPS_STATIC] = "static",
1592                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1593         };
1594
1595         if (conf->chandef.chan)
1596                 wiphy_debug(hw->wiphy,
1597                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1598                             __func__,
1599                             conf->chandef.chan->center_freq,
1600                             conf->chandef.center_freq1,
1601                             conf->chandef.center_freq2,
1602                             hwsim_chanwidths[conf->chandef.width],
1603                             !!(conf->flags & IEEE80211_CONF_IDLE),
1604                             !!(conf->flags & IEEE80211_CONF_PS),
1605                             smps_modes[conf->smps_mode]);
1606         else
1607                 wiphy_debug(hw->wiphy,
1608                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1609                             __func__,
1610                             !!(conf->flags & IEEE80211_CONF_IDLE),
1611                             !!(conf->flags & IEEE80211_CONF_PS),
1612                             smps_modes[conf->smps_mode]);
1613
1614         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1615
1616         data->channel = conf->chandef.chan;
1617
1618         WARN_ON(data->channel && data->use_chanctx);
1619
1620         if (!data->started || !data->beacon_int)
1621                 tasklet_hrtimer_cancel(&data->beacon_timer);
1622         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1623                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1624                 u32 bcn_int = data->beacon_int;
1625                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1626
1627                 tasklet_hrtimer_start(&data->beacon_timer,
1628                                       ns_to_ktime(until_tbtt * 1000),
1629                                       HRTIMER_MODE_REL);
1630         }
1631
1632         return 0;
1633 }
1634
1635
1636 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1637                                             unsigned int changed_flags,
1638                                             unsigned int *total_flags,u64 multicast)
1639 {
1640         struct mac80211_hwsim_data *data = hw->priv;
1641
1642         wiphy_debug(hw->wiphy, "%s\n", __func__);
1643
1644         data->rx_filter = 0;
1645         if (*total_flags & FIF_ALLMULTI)
1646                 data->rx_filter |= FIF_ALLMULTI;
1647
1648         *total_flags = data->rx_filter;
1649 }
1650
1651 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1652                                        struct ieee80211_vif *vif)
1653 {
1654         unsigned int *count = data;
1655         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1656
1657         if (vp->bcn_en)
1658                 (*count)++;
1659 }
1660
1661 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1662                                             struct ieee80211_vif *vif,
1663                                             struct ieee80211_bss_conf *info,
1664                                             u32 changed)
1665 {
1666         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1667         struct mac80211_hwsim_data *data = hw->priv;
1668
1669         hwsim_check_magic(vif);
1670
1671         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1672                     __func__, changed, vif->addr);
1673
1674         if (changed & BSS_CHANGED_BSSID) {
1675                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1676                             __func__, info->bssid);
1677                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1678         }
1679
1680         if (changed & BSS_CHANGED_ASSOC) {
1681                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1682                             info->assoc, info->aid);
1683                 vp->assoc = info->assoc;
1684                 vp->aid = info->aid;
1685         }
1686
1687         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1688                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1689                             info->enable_beacon, info->beacon_int);
1690                 vp->bcn_en = info->enable_beacon;
1691                 if (data->started &&
1692                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1693                     info->enable_beacon) {
1694                         u64 tsf, until_tbtt;
1695                         u32 bcn_int;
1696                         data->beacon_int = info->beacon_int * 1024;
1697                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1698                         bcn_int = data->beacon_int;
1699                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1700                         tasklet_hrtimer_start(&data->beacon_timer,
1701                                               ns_to_ktime(until_tbtt * 1000),
1702                                               HRTIMER_MODE_REL);
1703                 } else if (!info->enable_beacon) {
1704                         unsigned int count = 0;
1705                         ieee80211_iterate_active_interfaces_atomic(
1706                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1707                                 mac80211_hwsim_bcn_en_iter, &count);
1708                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1709                                     count);
1710                         if (count == 0) {
1711                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1712                                 data->beacon_int = 0;
1713                         }
1714                 }
1715         }
1716
1717         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1718                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1719                             info->use_cts_prot);
1720         }
1721
1722         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1723                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1724                             info->use_short_preamble);
1725         }
1726
1727         if (changed & BSS_CHANGED_ERP_SLOT) {
1728                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1729         }
1730
1731         if (changed & BSS_CHANGED_HT) {
1732                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1733                             info->ht_operation_mode);
1734         }
1735
1736         if (changed & BSS_CHANGED_BASIC_RATES) {
1737                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1738                             (unsigned long long) info->basic_rates);
1739         }
1740
1741         if (changed & BSS_CHANGED_TXPOWER)
1742                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1743 }
1744
1745 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1746                                   struct ieee80211_vif *vif,
1747                                   struct ieee80211_sta *sta)
1748 {
1749         hwsim_check_magic(vif);
1750         hwsim_set_sta_magic(sta);
1751
1752         return 0;
1753 }
1754
1755 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1756                                      struct ieee80211_vif *vif,
1757                                      struct ieee80211_sta *sta)
1758 {
1759         hwsim_check_magic(vif);
1760         hwsim_clear_sta_magic(sta);
1761
1762         return 0;
1763 }
1764
1765 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1766                                       struct ieee80211_vif *vif,
1767                                       enum sta_notify_cmd cmd,
1768                                       struct ieee80211_sta *sta)
1769 {
1770         hwsim_check_magic(vif);
1771
1772         switch (cmd) {
1773         case STA_NOTIFY_SLEEP:
1774         case STA_NOTIFY_AWAKE:
1775                 /* TODO: make good use of these flags */
1776                 break;
1777         default:
1778                 WARN(1, "Invalid sta notify: %d\n", cmd);
1779                 break;
1780         }
1781 }
1782
1783 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1784                                   struct ieee80211_sta *sta,
1785                                   bool set)
1786 {
1787         hwsim_check_sta_magic(sta);
1788         return 0;
1789 }
1790
1791 static int mac80211_hwsim_conf_tx(
1792         struct ieee80211_hw *hw,
1793         struct ieee80211_vif *vif, u16 queue,
1794         const struct ieee80211_tx_queue_params *params)
1795 {
1796         wiphy_debug(hw->wiphy,
1797                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1798                     __func__, queue,
1799                     params->txop, params->cw_min,
1800                     params->cw_max, params->aifs);
1801         return 0;
1802 }
1803
1804 static int mac80211_hwsim_get_survey(
1805         struct ieee80211_hw *hw, int idx,
1806         struct survey_info *survey)
1807 {
1808         struct ieee80211_conf *conf = &hw->conf;
1809
1810         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1811
1812         if (idx != 0)
1813                 return -ENOENT;
1814
1815         /* Current channel */
1816         survey->channel = conf->chandef.chan;
1817
1818         /*
1819          * Magically conjured noise level --- this is only ok for simulated hardware.
1820          *
1821          * A real driver which cannot determine the real channel noise MUST NOT
1822          * report any noise, especially not a magically conjured one :-)
1823          */
1824         survey->filled = SURVEY_INFO_NOISE_DBM;
1825         survey->noise = -92;
1826
1827         return 0;
1828 }
1829
1830 #ifdef CONFIG_NL80211_TESTMODE
1831 /*
1832  * This section contains example code for using netlink
1833  * attributes with the testmode command in nl80211.
1834  */
1835
1836 /* These enums need to be kept in sync with userspace */
1837 enum hwsim_testmode_attr {
1838         __HWSIM_TM_ATTR_INVALID = 0,
1839         HWSIM_TM_ATTR_CMD       = 1,
1840         HWSIM_TM_ATTR_PS        = 2,
1841
1842         /* keep last */
1843         __HWSIM_TM_ATTR_AFTER_LAST,
1844         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1845 };
1846
1847 enum hwsim_testmode_cmd {
1848         HWSIM_TM_CMD_SET_PS             = 0,
1849         HWSIM_TM_CMD_GET_PS             = 1,
1850         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1851         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1852 };
1853
1854 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1855         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1856         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1857 };
1858
1859 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1860                                        struct ieee80211_vif *vif,
1861                                        void *data, int len)
1862 {
1863         struct mac80211_hwsim_data *hwsim = hw->priv;
1864         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1865         struct sk_buff *skb;
1866         int err, ps;
1867
1868         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1869                         hwsim_testmode_policy);
1870         if (err)
1871                 return err;
1872
1873         if (!tb[HWSIM_TM_ATTR_CMD])
1874                 return -EINVAL;
1875
1876         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1877         case HWSIM_TM_CMD_SET_PS:
1878                 if (!tb[HWSIM_TM_ATTR_PS])
1879                         return -EINVAL;
1880                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1881                 return hwsim_fops_ps_write(hwsim, ps);
1882         case HWSIM_TM_CMD_GET_PS:
1883                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1884                                                 nla_total_size(sizeof(u32)));
1885                 if (!skb)
1886                         return -ENOMEM;
1887                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1888                         goto nla_put_failure;
1889                 return cfg80211_testmode_reply(skb);
1890         case HWSIM_TM_CMD_STOP_QUEUES:
1891                 ieee80211_stop_queues(hw);
1892                 return 0;
1893         case HWSIM_TM_CMD_WAKE_QUEUES:
1894                 ieee80211_wake_queues(hw);
1895                 return 0;
1896         default:
1897                 return -EOPNOTSUPP;
1898         }
1899
1900  nla_put_failure:
1901         kfree_skb(skb);
1902         return -ENOBUFS;
1903 }
1904 #endif
1905
1906 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1907                                        struct ieee80211_vif *vif,
1908                                        struct ieee80211_ampdu_params *params)
1909 {
1910         struct ieee80211_sta *sta = params->sta;
1911         enum ieee80211_ampdu_mlme_action action = params->action;
1912         u16 tid = params->tid;
1913
1914         switch (action) {
1915         case IEEE80211_AMPDU_TX_START:
1916                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1917                 break;
1918         case IEEE80211_AMPDU_TX_STOP_CONT:
1919         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1920         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1921                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1922                 break;
1923         case IEEE80211_AMPDU_TX_OPERATIONAL:
1924                 break;
1925         case IEEE80211_AMPDU_RX_START:
1926         case IEEE80211_AMPDU_RX_STOP:
1927                 break;
1928         default:
1929                 return -EOPNOTSUPP;
1930         }
1931
1932         return 0;
1933 }
1934
1935 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1936                                  struct ieee80211_vif *vif,
1937                                  u32 queues, bool drop)
1938 {
1939         /* Not implemented, queues only on kernel side */
1940 }
1941
1942 static void hw_scan_work(struct work_struct *work)
1943 {
1944         struct mac80211_hwsim_data *hwsim =
1945                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1946         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1947         int dwell, i;
1948
1949         mutex_lock(&hwsim->mutex);
1950         if (hwsim->scan_chan_idx >= req->n_channels) {
1951                 struct cfg80211_scan_info info = {
1952                         .aborted = false,
1953                 };
1954
1955                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1956                 ieee80211_scan_completed(hwsim->hw, &info);
1957                 hwsim->hw_scan_request = NULL;
1958                 hwsim->hw_scan_vif = NULL;
1959                 hwsim->tmp_chan = NULL;
1960                 mutex_unlock(&hwsim->mutex);
1961                 return;
1962         }
1963
1964         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1965                     req->channels[hwsim->scan_chan_idx]->center_freq);
1966
1967         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1968         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1969                                       IEEE80211_CHAN_RADAR) ||
1970             !req->n_ssids) {
1971                 dwell = 120;
1972         } else {
1973                 dwell = 30;
1974                 /* send probes */
1975                 for (i = 0; i < req->n_ssids; i++) {
1976                         struct sk_buff *probe;
1977                         struct ieee80211_mgmt *mgmt;
1978
1979                         probe = ieee80211_probereq_get(hwsim->hw,
1980                                                        hwsim->scan_addr,
1981                                                        req->ssids[i].ssid,
1982                                                        req->ssids[i].ssid_len,
1983                                                        req->ie_len);
1984                         if (!probe)
1985                                 continue;
1986
1987                         mgmt = (struct ieee80211_mgmt *) probe->data;
1988                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
1989                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
1990
1991                         if (req->ie_len)
1992                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1993                                        req->ie_len);
1994
1995                         rcu_read_lock();
1996                         if (!ieee80211_tx_prepare_skb(hwsim->hw,
1997                                                       hwsim->hw_scan_vif,
1998                                                       probe,
1999                                                       hwsim->tmp_chan->band,
2000                                                       NULL)) {
2001                                 rcu_read_unlock();
2002                                 kfree_skb(probe);
2003                                 continue;
2004                         }
2005
2006                         local_bh_disable();
2007                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2008                                                 hwsim->tmp_chan);
2009                         rcu_read_unlock();
2010                         local_bh_enable();
2011                 }
2012         }
2013         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2014                                      msecs_to_jiffies(dwell));
2015         hwsim->scan_chan_idx++;
2016         mutex_unlock(&hwsim->mutex);
2017 }
2018
2019 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2020                                   struct ieee80211_vif *vif,
2021                                   struct ieee80211_scan_request *hw_req)
2022 {
2023         struct mac80211_hwsim_data *hwsim = hw->priv;
2024         struct cfg80211_scan_request *req = &hw_req->req;
2025
2026         mutex_lock(&hwsim->mutex);
2027         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2028                 mutex_unlock(&hwsim->mutex);
2029                 return -EBUSY;
2030         }
2031         hwsim->hw_scan_request = req;
2032         hwsim->hw_scan_vif = vif;
2033         hwsim->scan_chan_idx = 0;
2034         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2035                 get_random_mask_addr(hwsim->scan_addr,
2036                                      hw_req->req.mac_addr,
2037                                      hw_req->req.mac_addr_mask);
2038         else
2039                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2040         mutex_unlock(&hwsim->mutex);
2041
2042         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2043
2044         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2045
2046         return 0;
2047 }
2048
2049 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2050                                           struct ieee80211_vif *vif)
2051 {
2052         struct mac80211_hwsim_data *hwsim = hw->priv;
2053         struct cfg80211_scan_info info = {
2054                 .aborted = true,
2055         };
2056
2057         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2058
2059         cancel_delayed_work_sync(&hwsim->hw_scan);
2060
2061         mutex_lock(&hwsim->mutex);
2062         ieee80211_scan_completed(hwsim->hw, &info);
2063         hwsim->tmp_chan = NULL;
2064         hwsim->hw_scan_request = NULL;
2065         hwsim->hw_scan_vif = NULL;
2066         mutex_unlock(&hwsim->mutex);
2067 }
2068
2069 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2070                                    struct ieee80211_vif *vif,
2071                                    const u8 *mac_addr)
2072 {
2073         struct mac80211_hwsim_data *hwsim = hw->priv;
2074
2075         mutex_lock(&hwsim->mutex);
2076
2077         if (hwsim->scanning) {
2078                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2079                 goto out;
2080         }
2081
2082         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2083
2084         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2085         hwsim->scanning = true;
2086
2087 out:
2088         mutex_unlock(&hwsim->mutex);
2089 }
2090
2091 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2092                                             struct ieee80211_vif *vif)
2093 {
2094         struct mac80211_hwsim_data *hwsim = hw->priv;
2095
2096         mutex_lock(&hwsim->mutex);
2097
2098         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2099         hwsim->scanning = false;
2100         eth_zero_addr(hwsim->scan_addr);
2101
2102         mutex_unlock(&hwsim->mutex);
2103 }
2104
2105 static void hw_roc_start(struct work_struct *work)
2106 {
2107         struct mac80211_hwsim_data *hwsim =
2108                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2109
2110         mutex_lock(&hwsim->mutex);
2111
2112         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2113         hwsim->tmp_chan = hwsim->roc_chan;
2114         ieee80211_ready_on_channel(hwsim->hw);
2115
2116         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2117                                      msecs_to_jiffies(hwsim->roc_duration));
2118
2119         mutex_unlock(&hwsim->mutex);
2120 }
2121
2122 static void hw_roc_done(struct work_struct *work)
2123 {
2124         struct mac80211_hwsim_data *hwsim =
2125                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2126
2127         mutex_lock(&hwsim->mutex);
2128         ieee80211_remain_on_channel_expired(hwsim->hw);
2129         hwsim->tmp_chan = NULL;
2130         mutex_unlock(&hwsim->mutex);
2131
2132         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2133 }
2134
2135 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2136                               struct ieee80211_vif *vif,
2137                               struct ieee80211_channel *chan,
2138                               int duration,
2139                               enum ieee80211_roc_type type)
2140 {
2141         struct mac80211_hwsim_data *hwsim = hw->priv;
2142
2143         mutex_lock(&hwsim->mutex);
2144         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2145                 mutex_unlock(&hwsim->mutex);
2146                 return -EBUSY;
2147         }
2148
2149         hwsim->roc_chan = chan;
2150         hwsim->roc_duration = duration;
2151         mutex_unlock(&hwsim->mutex);
2152
2153         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2154                     chan->center_freq, duration);
2155         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2156
2157         return 0;
2158 }
2159
2160 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2161 {
2162         struct mac80211_hwsim_data *hwsim = hw->priv;
2163
2164         cancel_delayed_work_sync(&hwsim->roc_start);
2165         cancel_delayed_work_sync(&hwsim->roc_done);
2166
2167         mutex_lock(&hwsim->mutex);
2168         hwsim->tmp_chan = NULL;
2169         mutex_unlock(&hwsim->mutex);
2170
2171         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2172
2173         return 0;
2174 }
2175
2176 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2177                                       struct ieee80211_chanctx_conf *ctx)
2178 {
2179         hwsim_set_chanctx_magic(ctx);
2180         wiphy_debug(hw->wiphy,
2181                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2182                     ctx->def.chan->center_freq, ctx->def.width,
2183                     ctx->def.center_freq1, ctx->def.center_freq2);
2184         return 0;
2185 }
2186
2187 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2188                                           struct ieee80211_chanctx_conf *ctx)
2189 {
2190         wiphy_debug(hw->wiphy,
2191                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2192                     ctx->def.chan->center_freq, ctx->def.width,
2193                     ctx->def.center_freq1, ctx->def.center_freq2);
2194         hwsim_check_chanctx_magic(ctx);
2195         hwsim_clear_chanctx_magic(ctx);
2196 }
2197
2198 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2199                                           struct ieee80211_chanctx_conf *ctx,
2200                                           u32 changed)
2201 {
2202         hwsim_check_chanctx_magic(ctx);
2203         wiphy_debug(hw->wiphy,
2204                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2205                     ctx->def.chan->center_freq, ctx->def.width,
2206                     ctx->def.center_freq1, ctx->def.center_freq2);
2207 }
2208
2209 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2210                                              struct ieee80211_vif *vif,
2211                                              struct ieee80211_chanctx_conf *ctx)
2212 {
2213         hwsim_check_magic(vif);
2214         hwsim_check_chanctx_magic(ctx);
2215
2216         return 0;
2217 }
2218
2219 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2220                                                 struct ieee80211_vif *vif,
2221                                                 struct ieee80211_chanctx_conf *ctx)
2222 {
2223         hwsim_check_magic(vif);
2224         hwsim_check_chanctx_magic(ctx);
2225 }
2226
2227 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2228         "tx_pkts_nic",
2229         "tx_bytes_nic",
2230         "rx_pkts_nic",
2231         "rx_bytes_nic",
2232         "d_tx_dropped",
2233         "d_tx_failed",
2234         "d_ps_mode",
2235         "d_group",
2236 };
2237
2238 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2239
2240 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2241                                           struct ieee80211_vif *vif,
2242                                           u32 sset, u8 *data)
2243 {
2244         if (sset == ETH_SS_STATS)
2245                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2246                        sizeof(mac80211_hwsim_gstrings_stats));
2247 }
2248
2249 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2250                                             struct ieee80211_vif *vif, int sset)
2251 {
2252         if (sset == ETH_SS_STATS)
2253                 return MAC80211_HWSIM_SSTATS_LEN;
2254         return 0;
2255 }
2256
2257 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2258                                         struct ieee80211_vif *vif,
2259                                         struct ethtool_stats *stats, u64 *data)
2260 {
2261         struct mac80211_hwsim_data *ar = hw->priv;
2262         int i = 0;
2263
2264         data[i++] = ar->tx_pkts;
2265         data[i++] = ar->tx_bytes;
2266         data[i++] = ar->rx_pkts;
2267         data[i++] = ar->rx_bytes;
2268         data[i++] = ar->tx_dropped;
2269         data[i++] = ar->tx_failed;
2270         data[i++] = ar->ps;
2271         data[i++] = ar->group;
2272
2273         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2274 }
2275
2276 static const struct ieee80211_ops mac80211_hwsim_ops = {
2277         .tx = mac80211_hwsim_tx,
2278         .start = mac80211_hwsim_start,
2279         .stop = mac80211_hwsim_stop,
2280         .add_interface = mac80211_hwsim_add_interface,
2281         .change_interface = mac80211_hwsim_change_interface,
2282         .remove_interface = mac80211_hwsim_remove_interface,
2283         .config = mac80211_hwsim_config,
2284         .configure_filter = mac80211_hwsim_configure_filter,
2285         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2286         .sta_add = mac80211_hwsim_sta_add,
2287         .sta_remove = mac80211_hwsim_sta_remove,
2288         .sta_notify = mac80211_hwsim_sta_notify,
2289         .set_tim = mac80211_hwsim_set_tim,
2290         .conf_tx = mac80211_hwsim_conf_tx,
2291         .get_survey = mac80211_hwsim_get_survey,
2292         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2293         .ampdu_action = mac80211_hwsim_ampdu_action,
2294         .sw_scan_start = mac80211_hwsim_sw_scan,
2295         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2296         .flush = mac80211_hwsim_flush,
2297         .get_tsf = mac80211_hwsim_get_tsf,
2298         .set_tsf = mac80211_hwsim_set_tsf,
2299         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2300         .get_et_stats = mac80211_hwsim_get_et_stats,
2301         .get_et_strings = mac80211_hwsim_get_et_strings,
2302 };
2303
2304 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2305
2306 struct hwsim_new_radio_params {
2307         unsigned int channels;
2308         const char *reg_alpha2;
2309         const struct ieee80211_regdomain *regd;
2310         bool reg_strict;
2311         bool p2p_device;
2312         bool use_chanctx;
2313         bool destroy_on_close;
2314         const char *hwname;
2315         bool no_vif;
2316 };
2317
2318 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2319                                    struct genl_info *info)
2320 {
2321         if (info)
2322                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2323                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2324         else
2325                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2326                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2327 }
2328
2329 static int append_radio_msg(struct sk_buff *skb, int id,
2330                             struct hwsim_new_radio_params *param)
2331 {
2332         int ret;
2333
2334         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2335         if (ret < 0)
2336                 return ret;
2337
2338         if (param->channels) {
2339                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2340                 if (ret < 0)
2341                         return ret;
2342         }
2343
2344         if (param->reg_alpha2) {
2345                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2346                               param->reg_alpha2);
2347                 if (ret < 0)
2348                         return ret;
2349         }
2350
2351         if (param->regd) {
2352                 int i;
2353
2354                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2355                         if (hwsim_world_regdom_custom[i] != param->regd)
2356                                 continue;
2357
2358                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2359                         if (ret < 0)
2360                                 return ret;
2361                         break;
2362                 }
2363         }
2364
2365         if (param->reg_strict) {
2366                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2367                 if (ret < 0)
2368                         return ret;
2369         }
2370
2371         if (param->p2p_device) {
2372                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2373                 if (ret < 0)
2374                         return ret;
2375         }
2376
2377         if (param->use_chanctx) {
2378                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2379                 if (ret < 0)
2380                         return ret;
2381         }
2382
2383         if (param->hwname) {
2384                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2385                               strlen(param->hwname), param->hwname);
2386                 if (ret < 0)
2387                         return ret;
2388         }
2389
2390         return 0;
2391 }
2392
2393 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2394                                   struct hwsim_new_radio_params *param)
2395 {
2396         struct sk_buff *mcast_skb;
2397         void *data;
2398
2399         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2400         if (!mcast_skb)
2401                 return;
2402
2403         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2404                            HWSIM_CMD_NEW_RADIO);
2405         if (!data)
2406                 goto out_err;
2407
2408         if (append_radio_msg(mcast_skb, id, param) < 0)
2409                 goto out_err;
2410
2411         genlmsg_end(mcast_skb, data);
2412
2413         hwsim_mcast_config_msg(mcast_skb, info);
2414         return;
2415
2416 out_err:
2417         genlmsg_cancel(mcast_skb, data);
2418         nlmsg_free(mcast_skb);
2419 }
2420
2421 static int mac80211_hwsim_new_radio(struct genl_info *info,
2422                                     struct hwsim_new_radio_params *param)
2423 {
2424         int err;
2425         u8 addr[ETH_ALEN];
2426         struct mac80211_hwsim_data *data;
2427         struct ieee80211_hw *hw;
2428         enum nl80211_band band;
2429         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2430         struct net *net;
2431         int idx;
2432
2433         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2434                 return -EINVAL;
2435
2436         spin_lock_bh(&hwsim_radio_lock);
2437         idx = hwsim_radio_idx++;
2438         spin_unlock_bh(&hwsim_radio_lock);
2439
2440         if (param->use_chanctx)
2441                 ops = &mac80211_hwsim_mchan_ops;
2442         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2443         if (!hw) {
2444                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2445                 err = -ENOMEM;
2446                 goto failed;
2447         }
2448
2449         if (info)
2450                 net = genl_info_net(info);
2451         else
2452                 net = &init_net;
2453         wiphy_net_set(hw->wiphy, net);
2454
2455         data = hw->priv;
2456         data->hw = hw;
2457
2458         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2459         if (IS_ERR(data->dev)) {
2460                 printk(KERN_DEBUG
2461                        "mac80211_hwsim: device_create failed (%ld)\n",
2462                        PTR_ERR(data->dev));
2463                 err = -ENOMEM;
2464                 goto failed_drvdata;
2465         }
2466         data->dev->driver = &mac80211_hwsim_driver.driver;
2467         err = device_bind_driver(data->dev);
2468         if (err != 0) {
2469                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2470                        err);
2471                 goto failed_bind;
2472         }
2473
2474         skb_queue_head_init(&data->pending);
2475
2476         SET_IEEE80211_DEV(hw, data->dev);
2477         eth_zero_addr(addr);
2478         addr[0] = 0x02;
2479         addr[3] = idx >> 8;
2480         addr[4] = idx;
2481         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2482         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2483         data->addresses[1].addr[0] |= 0x40;
2484         hw->wiphy->n_addresses = 2;
2485         hw->wiphy->addresses = data->addresses;
2486
2487         data->channels = param->channels;
2488         data->use_chanctx = param->use_chanctx;
2489         data->idx = idx;
2490         data->destroy_on_close = param->destroy_on_close;
2491         if (info)
2492                 data->portid = info->snd_portid;
2493
2494         if (data->use_chanctx) {
2495                 hw->wiphy->max_scan_ssids = 255;
2496                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2497                 hw->wiphy->max_remain_on_channel_duration = 1000;
2498                 hw->wiphy->iface_combinations = &data->if_combination;
2499                 if (param->p2p_device)
2500                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2501                 else
2502                         data->if_combination = hwsim_if_comb[0];
2503                 hw->wiphy->n_iface_combinations = 1;
2504                 /* For channels > 1 DFS is not allowed */
2505                 data->if_combination.radar_detect_widths = 0;
2506                 data->if_combination.num_different_channels = data->channels;
2507         } else if (param->p2p_device) {
2508                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2509                 hw->wiphy->n_iface_combinations =
2510                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2511         } else {
2512                 hw->wiphy->iface_combinations = hwsim_if_comb;
2513                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2514         }
2515
2516         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2517         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2518         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2519
2520         hw->queues = 5;
2521         hw->offchannel_tx_hw_queue = 4;
2522         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2523                                      BIT(NL80211_IFTYPE_AP) |
2524                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2525                                      BIT(NL80211_IFTYPE_P2P_GO) |
2526                                      BIT(NL80211_IFTYPE_ADHOC) |
2527                                      BIT(NL80211_IFTYPE_MESH_POINT);
2528
2529         if (param->p2p_device)
2530                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2531
2532         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2533         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2534         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2535         ieee80211_hw_set(hw, QUEUE_CONTROL);
2536         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2537         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2538         ieee80211_hw_set(hw, MFP_CAPABLE);
2539         ieee80211_hw_set(hw, SIGNAL_DBM);
2540         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2541         if (rctbl)
2542                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2543
2544         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2545                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2546                             WIPHY_FLAG_AP_UAPSD |
2547                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2548         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2549                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2550                                NL80211_FEATURE_STATIC_SMPS |
2551                                NL80211_FEATURE_DYNAMIC_SMPS |
2552                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2553         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2554
2555         /* ask mac80211 to reserve space for magic */
2556         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2557         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2558         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2559
2560         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2561                 sizeof(hwsim_channels_2ghz));
2562         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2563                 sizeof(hwsim_channels_5ghz));
2564         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2565
2566         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2567                 struct ieee80211_supported_band *sband = &data->bands[band];
2568                 switch (band) {
2569                 case NL80211_BAND_2GHZ:
2570                         sband->channels = data->channels_2ghz;
2571                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2572                         sband->bitrates = data->rates;
2573                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2574                         break;
2575                 case NL80211_BAND_5GHZ:
2576                         sband->channels = data->channels_5ghz;
2577                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2578                         sband->bitrates = data->rates + 4;
2579                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2580
2581                         sband->vht_cap.vht_supported = true;
2582                         sband->vht_cap.cap =
2583                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2584                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2585                                 IEEE80211_VHT_CAP_RXLDPC |
2586                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2587                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2588                                 IEEE80211_VHT_CAP_TXSTBC |
2589                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2590                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2591                         sband->vht_cap.vht_mcs.rx_mcs_map =
2592                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2593                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2594                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2595                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2596                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2597                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2598                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2599                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2600                         sband->vht_cap.vht_mcs.tx_mcs_map =
2601                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2602                         break;
2603                 default:
2604                         continue;
2605                 }
2606
2607                 sband->ht_cap.ht_supported = true;
2608                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2609                                     IEEE80211_HT_CAP_GRN_FLD |
2610                                     IEEE80211_HT_CAP_SGI_20 |
2611                                     IEEE80211_HT_CAP_SGI_40 |
2612                                     IEEE80211_HT_CAP_DSSSCCK40;
2613                 sband->ht_cap.ampdu_factor = 0x3;
2614                 sband->ht_cap.ampdu_density = 0x6;
2615                 memset(&sband->ht_cap.mcs, 0,
2616                        sizeof(sband->ht_cap.mcs));
2617                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2618                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2619                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2620
2621                 hw->wiphy->bands[band] = sband;
2622         }
2623
2624         /* By default all radios belong to the first group */
2625         data->group = 1;
2626         mutex_init(&data->mutex);
2627
2628         data->netgroup = hwsim_net_get_netgroup(net);
2629
2630         /* Enable frame retransmissions for lossy channels */
2631         hw->max_rates = 4;
2632         hw->max_rate_tries = 11;
2633
2634         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2635         hw->wiphy->n_vendor_commands =
2636                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2637         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2638         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2639
2640         if (param->reg_strict)
2641                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2642         if (param->regd) {
2643                 data->regd = param->regd;
2644                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2645                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2646                 /* give the regulatory workqueue a chance to run */
2647                 schedule_timeout_interruptible(1);
2648         }
2649
2650         if (param->no_vif)
2651                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2652
2653         tasklet_hrtimer_init(&data->beacon_timer,
2654                              mac80211_hwsim_beacon,
2655                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2656
2657         err = ieee80211_register_hw(hw);
2658         if (err < 0) {
2659                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2660                        err);
2661                 goto failed_hw;
2662         }
2663
2664         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2665
2666         if (param->reg_alpha2) {
2667                 data->alpha2[0] = param->reg_alpha2[0];
2668                 data->alpha2[1] = param->reg_alpha2[1];
2669                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2670         }
2671
2672         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2673         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2674         debugfs_create_file("group", 0666, data->debugfs, data,
2675                             &hwsim_fops_group);
2676         if (!data->use_chanctx)
2677                 debugfs_create_file("dfs_simulate_radar", 0222,
2678                                     data->debugfs,
2679                                     data, &hwsim_simulate_radar);
2680
2681         spin_lock_bh(&hwsim_radio_lock);
2682         list_add_tail(&data->list, &hwsim_radios);
2683         spin_unlock_bh(&hwsim_radio_lock);
2684
2685         hwsim_mcast_new_radio(idx, info, param);
2686
2687         return idx;
2688
2689 failed_hw:
2690         device_release_driver(data->dev);
2691 failed_bind:
2692         device_unregister(data->dev);
2693 failed_drvdata:
2694         ieee80211_free_hw(hw);
2695 failed:
2696         return err;
2697 }
2698
2699 static void hwsim_mcast_del_radio(int id, const char *hwname,
2700                                   struct genl_info *info)
2701 {
2702         struct sk_buff *skb;
2703         void *data;
2704         int ret;
2705
2706         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2707         if (!skb)
2708                 return;
2709
2710         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2711                            HWSIM_CMD_DEL_RADIO);
2712         if (!data)
2713                 goto error;
2714
2715         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2716         if (ret < 0)
2717                 goto error;
2718
2719         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2720                       hwname);
2721         if (ret < 0)
2722                 goto error;
2723
2724         genlmsg_end(skb, data);
2725
2726         hwsim_mcast_config_msg(skb, info);
2727
2728         return;
2729
2730 error:
2731         nlmsg_free(skb);
2732 }
2733
2734 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2735                                      const char *hwname,
2736                                      struct genl_info *info)
2737 {
2738         hwsim_mcast_del_radio(data->idx, hwname, info);
2739         debugfs_remove_recursive(data->debugfs);
2740         ieee80211_unregister_hw(data->hw);
2741         device_release_driver(data->dev);
2742         device_unregister(data->dev);
2743         ieee80211_free_hw(data->hw);
2744 }
2745
2746 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2747                                     struct mac80211_hwsim_data *data,
2748                                     u32 portid, u32 seq,
2749                                     struct netlink_callback *cb, int flags)
2750 {
2751         void *hdr;
2752         struct hwsim_new_radio_params param = { };
2753         int res = -EMSGSIZE;
2754
2755         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2756                           HWSIM_CMD_GET_RADIO);
2757         if (!hdr)
2758                 return -EMSGSIZE;
2759
2760         if (cb)
2761                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2762
2763         if (data->alpha2[0] && data->alpha2[1])
2764                 param.reg_alpha2 = data->alpha2;
2765
2766         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2767                                         REGULATORY_STRICT_REG);
2768         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2769                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2770         param.use_chanctx = data->use_chanctx;
2771         param.regd = data->regd;
2772         param.channels = data->channels;
2773         param.hwname = wiphy_name(data->hw->wiphy);
2774
2775         res = append_radio_msg(skb, data->idx, &param);
2776         if (res < 0)
2777                 goto out_err;
2778
2779         genlmsg_end(skb, hdr);
2780         return 0;
2781
2782 out_err:
2783         genlmsg_cancel(skb, hdr);
2784         return res;
2785 }
2786
2787 static void mac80211_hwsim_free(void)
2788 {
2789         struct mac80211_hwsim_data *data;
2790
2791         spin_lock_bh(&hwsim_radio_lock);
2792         while ((data = list_first_entry_or_null(&hwsim_radios,
2793                                                 struct mac80211_hwsim_data,
2794                                                 list))) {
2795                 list_del(&data->list);
2796                 spin_unlock_bh(&hwsim_radio_lock);
2797                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2798                                          NULL);
2799                 spin_lock_bh(&hwsim_radio_lock);
2800         }
2801         spin_unlock_bh(&hwsim_radio_lock);
2802         class_destroy(hwsim_class);
2803 }
2804
2805 static const struct net_device_ops hwsim_netdev_ops = {
2806         .ndo_start_xmit         = hwsim_mon_xmit,
2807         .ndo_change_mtu         = eth_change_mtu,
2808         .ndo_set_mac_address    = eth_mac_addr,
2809         .ndo_validate_addr      = eth_validate_addr,
2810 };
2811
2812 static void hwsim_mon_setup(struct net_device *dev)
2813 {
2814         dev->netdev_ops = &hwsim_netdev_ops;
2815         dev->destructor = free_netdev;
2816         ether_setup(dev);
2817         dev->priv_flags |= IFF_NO_QUEUE;
2818         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2819         eth_zero_addr(dev->dev_addr);
2820         dev->dev_addr[0] = 0x12;
2821 }
2822
2823 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2824 {
2825         struct mac80211_hwsim_data *data;
2826         bool _found = false;
2827
2828         spin_lock_bh(&hwsim_radio_lock);
2829         list_for_each_entry(data, &hwsim_radios, list) {
2830                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2831                         _found = true;
2832                         break;
2833                 }
2834         }
2835         spin_unlock_bh(&hwsim_radio_lock);
2836
2837         if (!_found)
2838                 return NULL;
2839
2840         return data;
2841 }
2842
2843 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2844 {
2845         struct mac80211_hwsim_data *data;
2846
2847         hwsim_net_set_wmediumd(net, portid);
2848
2849         spin_lock_bh(&hwsim_radio_lock);
2850         list_for_each_entry(data, &hwsim_radios, list) {
2851                 if (data->netgroup == hwsim_net_get_netgroup(net))
2852                         data->wmediumd = portid;
2853         }
2854         spin_unlock_bh(&hwsim_radio_lock);
2855 }
2856
2857 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2858                                            struct genl_info *info)
2859 {
2860
2861         struct ieee80211_hdr *hdr;
2862         struct mac80211_hwsim_data *data2;
2863         struct ieee80211_tx_info *txi;
2864         struct hwsim_tx_rate *tx_attempts;
2865         u64 ret_skb_cookie;
2866         struct sk_buff *skb, *tmp;
2867         const u8 *src;
2868         unsigned int hwsim_flags;
2869         int i;
2870         bool found = false;
2871
2872         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2873             !info->attrs[HWSIM_ATTR_FLAGS] ||
2874             !info->attrs[HWSIM_ATTR_COOKIE] ||
2875             !info->attrs[HWSIM_ATTR_SIGNAL] ||
2876             !info->attrs[HWSIM_ATTR_TX_INFO])
2877                 goto out;
2878
2879         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2880         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2881         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2882
2883         data2 = get_hwsim_data_ref_from_addr(src);
2884         if (!data2)
2885                 goto out;
2886
2887         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2888                 goto out;
2889
2890         if (info->snd_portid != data2->wmediumd)
2891                 goto out;
2892
2893         /* look for the skb matching the cookie passed back from user */
2894         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2895                 u64 skb_cookie;
2896
2897                 txi = IEEE80211_SKB_CB(skb);
2898                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2899
2900                 if (skb_cookie == ret_skb_cookie) {
2901                         skb_unlink(skb, &data2->pending);
2902                         found = true;
2903                         break;
2904                 }
2905         }
2906
2907         /* not found */
2908         if (!found)
2909                 goto out;
2910
2911         /* Tx info received because the frame was broadcasted on user space,
2912          so we get all the necessary info: tx attempts and skb control buff */
2913
2914         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2915                        info->attrs[HWSIM_ATTR_TX_INFO]);
2916
2917         /* now send back TX status */
2918         txi = IEEE80211_SKB_CB(skb);
2919
2920         ieee80211_tx_info_clear_status(txi);
2921
2922         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2923                 txi->status.rates[i].idx = tx_attempts[i].idx;
2924                 txi->status.rates[i].count = tx_attempts[i].count;
2925                 /*txi->status.rates[i].flags = 0;*/
2926         }
2927
2928         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2929
2930         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2931            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2932                 if (skb->len >= 16) {
2933                         hdr = (struct ieee80211_hdr *) skb->data;
2934                         mac80211_hwsim_monitor_ack(data2->channel,
2935                                                    hdr->addr2);
2936                 }
2937                 txi->flags |= IEEE80211_TX_STAT_ACK;
2938         }
2939
2940         if (hwsim_flags & HWSIM_TX_CTL_NO_ACK)
2941                 txi->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
2942
2943         ieee80211_tx_status_irqsafe(data2->hw, skb);
2944         return 0;
2945 out:
2946         return -EINVAL;
2947
2948 }
2949
2950 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2951                                           struct genl_info *info)
2952 {
2953         struct mac80211_hwsim_data *data2;
2954         struct ieee80211_rx_status rx_status;
2955         const u8 *dst;
2956         int frame_data_len;
2957         void *frame_data;
2958         struct sk_buff *skb = NULL;
2959
2960         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2961             !info->attrs[HWSIM_ATTR_FRAME] ||
2962             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2963             !info->attrs[HWSIM_ATTR_SIGNAL])
2964                 goto out;
2965
2966         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2967         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2968         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2969
2970         /* Allocate new skb here */
2971         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2972         if (skb == NULL)
2973                 goto err;
2974
2975         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2976                 goto err;
2977
2978         /* Copy the data */
2979         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2980
2981         data2 = get_hwsim_data_ref_from_addr(dst);
2982         if (!data2)
2983                 goto out;
2984
2985         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2986                 goto out;
2987
2988         if (info->snd_portid != data2->wmediumd)
2989                 goto out;
2990
2991         /* check if radio is configured properly */
2992
2993         if (data2->idle || !data2->started)
2994                 goto out;
2995
2996         /* A frame is received from user space */
2997         memset(&rx_status, 0, sizeof(rx_status));
2998         if (info->attrs[HWSIM_ATTR_FREQ]) {
2999                 /* throw away off-channel packets, but allow both the temporary
3000                  * ("hw" scan/remain-on-channel) and regular channel, since the
3001                  * internal datapath also allows this
3002                  */
3003                 mutex_lock(&data2->mutex);
3004                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3005
3006                 if (rx_status.freq != data2->channel->center_freq &&
3007                     (!data2->tmp_chan ||
3008                      rx_status.freq != data2->tmp_chan->center_freq)) {
3009                         mutex_unlock(&data2->mutex);
3010                         goto out;
3011                 }
3012                 mutex_unlock(&data2->mutex);
3013         } else {
3014                 rx_status.freq = data2->channel->center_freq;
3015         }
3016
3017         rx_status.band = data2->channel->band;
3018         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3019         if (rx_status.rate_idx >= data2->hw->wiphy->bands[rx_status.band]->n_bitrates)
3020                 goto out;
3021         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3022
3023         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3024         data2->rx_pkts++;
3025         data2->rx_bytes += skb->len;
3026         ieee80211_rx_irqsafe(data2->hw, skb);
3027
3028         return 0;
3029 err:
3030         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3031 out:
3032         dev_kfree_skb(skb);
3033         return -EINVAL;
3034 }
3035
3036 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3037                                       struct genl_info *info)
3038 {
3039         struct net *net = genl_info_net(info);
3040         struct mac80211_hwsim_data *data;
3041         int chans = 1;
3042
3043         spin_lock_bh(&hwsim_radio_lock);
3044         list_for_each_entry(data, &hwsim_radios, list)
3045                 chans = max(chans, data->channels);
3046         spin_unlock_bh(&hwsim_radio_lock);
3047
3048         /* In the future we should revise the userspace API and allow it
3049          * to set a flag that it does support multi-channel, then we can
3050          * let this pass conditionally on the flag.
3051          * For current userspace, prohibit it since it won't work right.
3052          */
3053         if (chans > 1)
3054                 return -EOPNOTSUPP;
3055
3056         if (hwsim_net_get_wmediumd(net))
3057                 return -EBUSY;
3058
3059         hwsim_register_wmediumd(net, info->snd_portid);
3060
3061         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3062                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3063
3064         return 0;
3065 }
3066
3067 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3068 {
3069         struct hwsim_new_radio_params param = { 0 };
3070         const char *hwname = NULL;
3071         int ret;
3072
3073         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3074         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3075         param.channels = channels;
3076         param.destroy_on_close =
3077                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3078
3079         if (info->attrs[HWSIM_ATTR_CHANNELS])
3080                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3081
3082         if (info->attrs[HWSIM_ATTR_NO_VIF])
3083                 param.no_vif = true;
3084
3085         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3086                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3087                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3088                                   GFP_KERNEL);
3089                 if (!hwname)
3090                         return -ENOMEM;
3091                 param.hwname = hwname;
3092         }
3093
3094         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3095                 param.use_chanctx = true;
3096         else
3097                 param.use_chanctx = (param.channels > 1);
3098
3099         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3100                 param.reg_alpha2 =
3101                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3102
3103         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3104                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3105
3106                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom)) {
3107                         kfree(hwname);
3108                         return -EINVAL;
3109                 }
3110                 param.regd = hwsim_world_regdom_custom[idx];
3111         }
3112
3113         ret = mac80211_hwsim_new_radio(info, &param);
3114         kfree(hwname);
3115         return ret;
3116 }
3117
3118 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3119 {
3120         struct mac80211_hwsim_data *data;
3121         s64 idx = -1;
3122         const char *hwname = NULL;
3123
3124         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3125                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3126         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3127                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3128                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3129                                   GFP_KERNEL);
3130                 if (!hwname)
3131                         return -ENOMEM;
3132         } else
3133                 return -EINVAL;
3134
3135         spin_lock_bh(&hwsim_radio_lock);
3136         list_for_each_entry(data, &hwsim_radios, list) {
3137                 if (idx >= 0) {
3138                         if (data->idx != idx)
3139                                 continue;
3140                 } else {
3141                         if (!hwname ||
3142                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3143                                 continue;
3144                 }
3145
3146                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3147                         continue;
3148
3149                 list_del(&data->list);
3150                 spin_unlock_bh(&hwsim_radio_lock);
3151                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3152                                          info);
3153                 kfree(hwname);
3154                 return 0;
3155         }
3156         spin_unlock_bh(&hwsim_radio_lock);
3157
3158         kfree(hwname);
3159         return -ENODEV;
3160 }
3161
3162 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3163 {
3164         struct mac80211_hwsim_data *data;
3165         struct sk_buff *skb;
3166         int idx, res = -ENODEV;
3167
3168         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3169                 return -EINVAL;
3170         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3171
3172         spin_lock_bh(&hwsim_radio_lock);
3173         list_for_each_entry(data, &hwsim_radios, list) {
3174                 if (data->idx != idx)
3175                         continue;
3176
3177                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3178                         continue;
3179
3180                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3181                 if (!skb) {
3182                         res = -ENOMEM;
3183                         goto out_err;
3184                 }
3185
3186                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3187                                                info->snd_seq, NULL, 0);
3188                 if (res < 0) {
3189                         nlmsg_free(skb);
3190                         goto out_err;
3191                 }
3192
3193                 res = genlmsg_reply(skb, info);
3194                 break;
3195         }
3196
3197 out_err:
3198         spin_unlock_bh(&hwsim_radio_lock);
3199
3200         return res;
3201 }
3202
3203 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3204                                struct netlink_callback *cb)
3205 {
3206         int idx = cb->args[0];
3207         struct mac80211_hwsim_data *data = NULL;
3208         int res;
3209
3210         spin_lock_bh(&hwsim_radio_lock);
3211
3212         if (idx == hwsim_radio_idx)
3213                 goto done;
3214
3215         list_for_each_entry(data, &hwsim_radios, list) {
3216                 if (data->idx < idx)
3217                         continue;
3218
3219                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3220                         continue;
3221
3222                 res = mac80211_hwsim_get_radio(skb, data,
3223                                                NETLINK_CB(cb->skb).portid,
3224                                                cb->nlh->nlmsg_seq, cb,
3225                                                NLM_F_MULTI);
3226                 if (res < 0)
3227                         break;
3228
3229                 idx = data->idx + 1;
3230         }
3231
3232         cb->args[0] = idx;
3233
3234 done:
3235         spin_unlock_bh(&hwsim_radio_lock);
3236         return skb->len;
3237 }
3238
3239 /* Generic Netlink operations array */
3240 static const struct genl_ops hwsim_ops[] = {
3241         {
3242                 .cmd = HWSIM_CMD_REGISTER,
3243                 .policy = hwsim_genl_policy,
3244                 .doit = hwsim_register_received_nl,
3245                 .flags = GENL_UNS_ADMIN_PERM,
3246         },
3247         {
3248                 .cmd = HWSIM_CMD_FRAME,
3249                 .policy = hwsim_genl_policy,
3250                 .doit = hwsim_cloned_frame_received_nl,
3251         },
3252         {
3253                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3254                 .policy = hwsim_genl_policy,
3255                 .doit = hwsim_tx_info_frame_received_nl,
3256         },
3257         {
3258                 .cmd = HWSIM_CMD_NEW_RADIO,
3259                 .policy = hwsim_genl_policy,
3260                 .doit = hwsim_new_radio_nl,
3261                 .flags = GENL_UNS_ADMIN_PERM,
3262         },
3263         {
3264                 .cmd = HWSIM_CMD_DEL_RADIO,
3265                 .policy = hwsim_genl_policy,
3266                 .doit = hwsim_del_radio_nl,
3267                 .flags = GENL_UNS_ADMIN_PERM,
3268         },
3269         {
3270                 .cmd = HWSIM_CMD_GET_RADIO,
3271                 .policy = hwsim_genl_policy,
3272                 .doit = hwsim_get_radio_nl,
3273                 .dumpit = hwsim_dump_radio_nl,
3274         },
3275 };
3276
3277 static void destroy_radio(struct work_struct *work)
3278 {
3279         struct mac80211_hwsim_data *data =
3280                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3281
3282         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3283 }
3284
3285 static void remove_user_radios(u32 portid)
3286 {
3287         struct mac80211_hwsim_data *entry, *tmp;
3288
3289         spin_lock_bh(&hwsim_radio_lock);
3290         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3291                 if (entry->destroy_on_close && entry->portid == portid) {
3292                         list_del(&entry->list);
3293                         INIT_WORK(&entry->destroy_work, destroy_radio);
3294                         schedule_work(&entry->destroy_work);
3295                 }
3296         }
3297         spin_unlock_bh(&hwsim_radio_lock);
3298 }
3299
3300 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3301                                          unsigned long state,
3302                                          void *_notify)
3303 {
3304         struct netlink_notify *notify = _notify;
3305
3306         if (state != NETLINK_URELEASE)
3307                 return NOTIFY_DONE;
3308
3309         remove_user_radios(notify->portid);
3310
3311         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3312                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3313                        " socket, switching to perfect channel medium\n");
3314                 hwsim_register_wmediumd(notify->net, 0);
3315         }
3316         return NOTIFY_DONE;
3317
3318 }
3319
3320 static struct notifier_block hwsim_netlink_notifier = {
3321         .notifier_call = mac80211_hwsim_netlink_notify,
3322 };
3323
3324 static int hwsim_init_netlink(void)
3325 {
3326         int rc;
3327
3328         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3329
3330         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3331                                                   hwsim_ops,
3332                                                   hwsim_mcgrps);
3333         if (rc)
3334                 goto failure;
3335
3336         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3337         if (rc) {
3338                 genl_unregister_family(&hwsim_genl_family);
3339                 goto failure;
3340         }
3341
3342         return 0;
3343
3344 failure:
3345         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3346         return -EINVAL;
3347 }
3348
3349 static __net_init int hwsim_init_net(struct net *net)
3350 {
3351         hwsim_net_set_netgroup(net);
3352
3353         return 0;
3354 }
3355
3356 static void __net_exit hwsim_exit_net(struct net *net)
3357 {
3358         struct mac80211_hwsim_data *data, *tmp;
3359
3360         spin_lock_bh(&hwsim_radio_lock);
3361         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3362                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3363                         continue;
3364
3365                 /* Radios created in init_net are returned to init_net. */
3366                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3367                         continue;
3368
3369                 list_del(&data->list);
3370                 spin_unlock_bh(&hwsim_radio_lock);
3371                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3372                                          NULL);
3373                 spin_lock_bh(&hwsim_radio_lock);
3374
3375         }
3376         spin_unlock_bh(&hwsim_radio_lock);
3377 }
3378
3379 static struct pernet_operations hwsim_net_ops = {
3380         .init = hwsim_init_net,
3381         .exit = hwsim_exit_net,
3382         .id   = &hwsim_net_id,
3383         .size = sizeof(struct hwsim_net),
3384 };
3385
3386 static void hwsim_exit_netlink(void)
3387 {
3388         /* unregister the notifier */
3389         netlink_unregister_notifier(&hwsim_netlink_notifier);
3390         /* unregister the family */
3391         genl_unregister_family(&hwsim_genl_family);
3392 }
3393
3394 static int __init init_mac80211_hwsim(void)
3395 {
3396         int i, err;
3397
3398         if (radios < 0 || radios > 100)
3399                 return -EINVAL;
3400
3401         if (channels < 1)
3402                 return -EINVAL;
3403
3404         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3405         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3406         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3407         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3408         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3409         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3410         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3411         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3412         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3413         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3414         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3415                 mac80211_hwsim_assign_vif_chanctx;
3416         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3417                 mac80211_hwsim_unassign_vif_chanctx;
3418
3419         spin_lock_init(&hwsim_radio_lock);
3420
3421         err = register_pernet_device(&hwsim_net_ops);
3422         if (err)
3423                 return err;
3424
3425         err = platform_driver_register(&mac80211_hwsim_driver);
3426         if (err)
3427                 goto out_unregister_pernet;
3428
3429         err = hwsim_init_netlink();
3430         if (err)
3431                 goto out_unregister_driver;
3432
3433         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3434         if (IS_ERR(hwsim_class)) {
3435                 err = PTR_ERR(hwsim_class);
3436                 goto out_exit_netlink;
3437         }
3438
3439         for (i = 0; i < radios; i++) {
3440                 struct hwsim_new_radio_params param = { 0 };
3441
3442                 param.channels = channels;
3443
3444                 switch (regtest) {
3445                 case HWSIM_REGTEST_DIFF_COUNTRY:
3446                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3447                                 param.reg_alpha2 = hwsim_alpha2s[i];
3448                         break;
3449                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3450                         if (!i)
3451                                 param.reg_alpha2 = hwsim_alpha2s[0];
3452                         break;
3453                 case HWSIM_REGTEST_STRICT_ALL:
3454                         param.reg_strict = true;
3455                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3456                         param.reg_alpha2 = hwsim_alpha2s[0];
3457                         break;
3458                 case HWSIM_REGTEST_WORLD_ROAM:
3459                         if (i == 0)
3460                                 param.regd = &hwsim_world_regdom_custom_01;
3461                         break;
3462                 case HWSIM_REGTEST_CUSTOM_WORLD:
3463                         param.regd = &hwsim_world_regdom_custom_01;
3464                         break;
3465                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3466                         if (i == 0)
3467                                 param.regd = &hwsim_world_regdom_custom_01;
3468                         else if (i == 1)
3469                                 param.regd = &hwsim_world_regdom_custom_02;
3470                         break;
3471                 case HWSIM_REGTEST_STRICT_FOLLOW:
3472                         if (i == 0) {
3473                                 param.reg_strict = true;
3474                                 param.reg_alpha2 = hwsim_alpha2s[0];
3475                         }
3476                         break;
3477                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3478                         if (i == 0) {
3479                                 param.reg_strict = true;
3480                                 param.reg_alpha2 = hwsim_alpha2s[0];
3481                         } else if (i == 1) {
3482                                 param.reg_alpha2 = hwsim_alpha2s[1];
3483                         }
3484                         break;
3485                 case HWSIM_REGTEST_ALL:
3486                         switch (i) {
3487                         case 0:
3488                                 param.regd = &hwsim_world_regdom_custom_01;
3489                                 break;
3490                         case 1:
3491                                 param.regd = &hwsim_world_regdom_custom_02;
3492                                 break;
3493                         case 2:
3494                                 param.reg_alpha2 = hwsim_alpha2s[0];
3495                                 break;
3496                         case 3:
3497                                 param.reg_alpha2 = hwsim_alpha2s[1];
3498                                 break;
3499                         case 4:
3500                                 param.reg_strict = true;
3501                                 param.reg_alpha2 = hwsim_alpha2s[2];
3502                                 break;
3503                         }
3504                         break;
3505                 default:
3506                         break;
3507                 }
3508
3509                 param.p2p_device = support_p2p_device;
3510                 param.use_chanctx = channels > 1;
3511
3512                 err = mac80211_hwsim_new_radio(NULL, &param);
3513                 if (err < 0)
3514                         goto out_free_radios;
3515         }
3516
3517         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3518                                  hwsim_mon_setup);
3519         if (hwsim_mon == NULL) {
3520                 err = -ENOMEM;
3521                 goto out_free_radios;
3522         }
3523
3524         rtnl_lock();
3525         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3526         if (err < 0) {
3527                 rtnl_unlock();
3528                 goto out_free_radios;
3529         }
3530
3531         err = register_netdevice(hwsim_mon);
3532         if (err < 0) {
3533                 rtnl_unlock();
3534                 goto out_free_mon;
3535         }
3536         rtnl_unlock();
3537
3538         return 0;
3539
3540 out_free_mon:
3541         free_netdev(hwsim_mon);
3542 out_free_radios:
3543         mac80211_hwsim_free();
3544 out_exit_netlink:
3545         hwsim_exit_netlink();
3546 out_unregister_driver:
3547         platform_driver_unregister(&mac80211_hwsim_driver);
3548 out_unregister_pernet:
3549         unregister_pernet_device(&hwsim_net_ops);
3550         return err;
3551 }
3552 module_init(init_mac80211_hwsim);
3553
3554 static void __exit exit_mac80211_hwsim(void)
3555 {
3556         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3557
3558         hwsim_exit_netlink();
3559
3560         mac80211_hwsim_free();
3561         unregister_netdev(hwsim_mon);
3562         platform_driver_unregister(&mac80211_hwsim_driver);
3563         unregister_pernet_device(&hwsim_net_ops);
3564 }
3565 module_exit(exit_mac80211_hwsim);