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 unsigned 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         int power_level;
 556
 557         /* difference between this hw's clock and the real clock, in usecs */
 558         s64 tsf_offset;
 559         s64 bcn_delta;
 560         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 561         u64 abs_bcn_ts;
 562
 563         /* Stats */
 564         u64 tx_pkts;
 565         u64 rx_pkts;
 566         u64 tx_bytes;
 567         u64 rx_bytes;
 568         u64 tx_dropped;
 569         u64 tx_failed;
 570 };
 571
 572
 573 struct hwsim_radiotap_hdr {
 574         struct ieee80211_radiotap_header hdr;
 575         __le64 rt_tsft;
 576         u8 rt_flags;
 577         u8 rt_rate;
 578         __le16 rt_channel;
 579         __le16 rt_chbitmask;
 580 } __packed;
 581
 582 struct hwsim_radiotap_ack_hdr {
 583         struct ieee80211_radiotap_header hdr;
 584         u8 rt_flags;
 585         u8 pad;
 586         __le16 rt_channel;
 587         __le16 rt_chbitmask;
 588 } __packed;
 589
 590 /* MAC80211_HWSIM netlink family */
 591 static struct genl_family hwsim_genl_family;
 592
 593 enum hwsim_multicast_groups {
 594         HWSIM_MCGRP_CONFIG,
 595 };
 596
 597 static const struct genl_multicast_group hwsim_mcgrps[] = {
 598         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 599 };
 600
 601 /* MAC80211_HWSIM netlink policy */
 602
 603 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 604         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 605         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 606         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 607                                .len = IEEE80211_MAX_DATA_LEN },
 608         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 609         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 610         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 611         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 612                                  .len = IEEE80211_TX_MAX_RATES *
 613                                         sizeof(struct hwsim_tx_rate)},
 614         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 615         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 616         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 617         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 618         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 619         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 620         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 621         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 622         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 623         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 624         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 625 };
 626
 627 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 628                                     struct sk_buff *skb,
 629                                     struct ieee80211_channel *chan);
 630
 631 /* sysfs attributes */
 632 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 633 {
 634         struct mac80211_hwsim_data *data = dat;
 635         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 636         struct sk_buff *skb;
 637         struct ieee80211_pspoll *pspoll;
 638
 639         if (!vp->assoc)
 640                 return;
 641
 642         wiphy_debug(data->hw->wiphy,
 643                     "%s: send PS-Poll to %pM for aid %d\n",
 644                     __func__, vp->bssid, vp->aid);
 645
 646         skb = dev_alloc_skb(sizeof(*pspoll));
 647         if (!skb)
 648                 return;
 649         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 650         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 651                                             IEEE80211_STYPE_PSPOLL |
 652                                             IEEE80211_FCTL_PM);
 653         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 654         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 655         memcpy(pspoll->ta, mac, ETH_ALEN);
 656
 657         rcu_read_lock();
 658         mac80211_hwsim_tx_frame(data->hw, skb,
 659                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 660         rcu_read_unlock();
 661 }
 662
 663 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 664                                 struct ieee80211_vif *vif, int ps)
 665 {
 666         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 667         struct sk_buff *skb;
 668         struct ieee80211_hdr *hdr;
 669
 670         if (!vp->assoc)
 671                 return;
 672
 673         wiphy_debug(data->hw->wiphy,
 674                     "%s: send data::nullfunc to %pM ps=%d\n",
 675                     __func__, vp->bssid, ps);
 676
 677         skb = dev_alloc_skb(sizeof(*hdr));
 678         if (!skb)
 679                 return;
 680         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 681         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 682                                          IEEE80211_STYPE_NULLFUNC |
 683                                          (ps ? IEEE80211_FCTL_PM : 0));
 684         hdr->duration_id = cpu_to_le16(0);
 685         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 686         memcpy(hdr->addr2, mac, ETH_ALEN);
 687         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 688
 689         rcu_read_lock();
 690         mac80211_hwsim_tx_frame(data->hw, skb,
 691                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 692         rcu_read_unlock();
 693 }
 694
 695
 696 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 697                                    struct ieee80211_vif *vif)
 698 {
 699         struct mac80211_hwsim_data *data = dat;
 700         hwsim_send_nullfunc(data, mac, vif, 1);
 701 }
 702
 703 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 704                                       struct ieee80211_vif *vif)
 705 {
 706         struct mac80211_hwsim_data *data = dat;
 707         hwsim_send_nullfunc(data, mac, vif, 0);
 708 }
 709
 710 static int hwsim_fops_ps_read(void *dat, u64 *val)
 711 {
 712         struct mac80211_hwsim_data *data = dat;
 713         *val = data->ps;
 714         return 0;
 715 }
 716
 717 static int hwsim_fops_ps_write(void *dat, u64 val)
 718 {
 719         struct mac80211_hwsim_data *data = dat;
 720         enum ps_mode old_ps;
 721
 722         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 723             val != PS_MANUAL_POLL)
 724                 return -EINVAL;
 725
 726         old_ps = data->ps;
 727         data->ps = val;
 728
 729         local_bh_disable();
 730         if (val == PS_MANUAL_POLL) {
 731                 ieee80211_iterate_active_interfaces_atomic(
 732                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 733                         hwsim_send_ps_poll, data);
 734                 data->ps_poll_pending = true;
 735         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 736                 ieee80211_iterate_active_interfaces_atomic(
 737                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 738                         hwsim_send_nullfunc_ps, data);
 739         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 740                 ieee80211_iterate_active_interfaces_atomic(
 741                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 742                         hwsim_send_nullfunc_no_ps, data);
 743         }
 744         local_bh_enable();
 745
 746         return 0;
 747 }
 748
 749 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 750                         "%llu\n");
 751
 752 static int hwsim_write_simulate_radar(void *dat, u64 val)
 753 {
 754         struct mac80211_hwsim_data *data = dat;
 755
 756         ieee80211_radar_detected(data->hw);
 757
 758         return 0;
 759 }
 760
 761 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 762                         hwsim_write_simulate_radar, "%llu\n");
 763
 764 static int hwsim_fops_group_read(void *dat, u64 *val)
 765 {
 766         struct mac80211_hwsim_data *data = dat;
 767         *val = data->group;
 768         return 0;
 769 }
 770
 771 static int hwsim_fops_group_write(void *dat, u64 val)
 772 {
 773         struct mac80211_hwsim_data *data = dat;
 774         data->group = val;
 775         return 0;
 776 }
 777
 778 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 779                         hwsim_fops_group_read, hwsim_fops_group_write,
 780                         "%llx\n");
 781
 782 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 783                                         struct net_device *dev)
 784 {
 785         /* TODO: allow packet injection */
 786         dev_kfree_skb(skb);
 787         return NETDEV_TX_OK;
 788 }
 789
 790 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 791 {
 792         return ktime_to_us(ktime_get_real());
 793 }
 794
 795 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 796 {
 797         u64 now = mac80211_hwsim_get_tsf_raw();
 798         return cpu_to_le64(now + data->tsf_offset);
 799 }
 800
 801 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 802                                   struct ieee80211_vif *vif)
 803 {
 804         struct mac80211_hwsim_data *data = hw->priv;
 805         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 806 }
 807
 808 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 809                 struct ieee80211_vif *vif, u64 tsf)
 810 {
 811         struct mac80211_hwsim_data *data = hw->priv;
 812         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 813         u32 bcn_int = data->beacon_int;
 814         u64 delta = abs(tsf - now);
 815
 816         /* adjust after beaconing with new timestamp at old TBTT */
 817         if (tsf > now) {
 818                 data->tsf_offset += delta;
 819                 data->bcn_delta = do_div(delta, bcn_int);
 820         } else {
 821                 data->tsf_offset -= delta;
 822                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 823         }
 824 }
 825
 826 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 827                                       struct sk_buff *tx_skb,
 828                                       struct ieee80211_channel *chan)
 829 {
 830         struct mac80211_hwsim_data *data = hw->priv;
 831         struct sk_buff *skb;
 832         struct hwsim_radiotap_hdr *hdr;
 833         u16 flags;
 834         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 835         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 836
 837         if (WARN_ON(!txrate))
 838                 return;
 839
 840         if (!netif_running(hwsim_mon))
 841                 return;
 842
 843         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 844         if (skb == NULL)
 845                 return;
 846
 847         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 848         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 849         hdr->hdr.it_pad = 0;
 850         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 851         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 852                                           (1 << IEEE80211_RADIOTAP_RATE) |
 853                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 854                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 855         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 856         hdr->rt_flags = 0;
 857         hdr->rt_rate = txrate->bitrate / 5;
 858         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 859         flags = IEEE80211_CHAN_2GHZ;
 860         if (txrate->flags & IEEE80211_RATE_ERP_G)
 861                 flags |= IEEE80211_CHAN_OFDM;
 862         else
 863                 flags |= IEEE80211_CHAN_CCK;
 864         hdr->rt_chbitmask = cpu_to_le16(flags);
 865
 866         skb->dev = hwsim_mon;
 867         skb_reset_mac_header(skb);
 868         skb->ip_summed = CHECKSUM_UNNECESSARY;
 869         skb->pkt_type = PACKET_OTHERHOST;
 870         skb->protocol = htons(ETH_P_802_2);
 871         memset(skb->cb, 0, sizeof(skb->cb));
 872         netif_rx(skb);
 873 }
 874
 875
 876 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 877                                        const u8 *addr)
 878 {
 879         struct sk_buff *skb;
 880         struct hwsim_radiotap_ack_hdr *hdr;
 881         u16 flags;
 882         struct ieee80211_hdr *hdr11;
 883
 884         if (!netif_running(hwsim_mon))
 885                 return;
 886
 887         skb = dev_alloc_skb(100);
 888         if (skb == NULL)
 889                 return;
 890
 891         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 892         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 893         hdr->hdr.it_pad = 0;
 894         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 895         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 896                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 897         hdr->rt_flags = 0;
 898         hdr->pad = 0;
 899         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 900         flags = IEEE80211_CHAN_2GHZ;
 901         hdr->rt_chbitmask = cpu_to_le16(flags);
 902
 903         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 904         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 905                                            IEEE80211_STYPE_ACK);
 906         hdr11->duration_id = cpu_to_le16(0);
 907         memcpy(hdr11->addr1, addr, ETH_ALEN);
 908
 909         skb->dev = hwsim_mon;
 910         skb_reset_mac_header(skb);
 911         skb->ip_summed = CHECKSUM_UNNECESSARY;
 912         skb->pkt_type = PACKET_OTHERHOST;
 913         skb->protocol = htons(ETH_P_802_2);
 914         memset(skb->cb, 0, sizeof(skb->cb));
 915         netif_rx(skb);
 916 }
 917
 918 struct mac80211_hwsim_addr_match_data {
 919         u8 addr[ETH_ALEN];
 920         bool ret;
 921 };
 922
 923 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 924                                      struct ieee80211_vif *vif)
 925 {
 926         struct mac80211_hwsim_addr_match_data *md = data;
 927
 928         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 929                 md->ret = true;
 930 }
 931
 932 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 933                                       const u8 *addr)
 934 {
 935         struct mac80211_hwsim_addr_match_data md = {
 936                 .ret = false,
 937         };
 938
 939         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 940                 return true;
 941
 942         memcpy(md.addr, addr, ETH_ALEN);
 943
 944         ieee80211_iterate_active_interfaces_atomic(data->hw,
 945                                                    IEEE80211_IFACE_ITER_NORMAL,
 946                                                    mac80211_hwsim_addr_iter,
 947                                                    &md);
 948
 949         return md.ret;
 950 }
 951
 952 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 953                            struct sk_buff *skb)
 954 {
 955         switch (data->ps) {
 956         case PS_DISABLED:
 957                 return true;
 958         case PS_ENABLED:
 959                 return false;
 960         case PS_AUTO_POLL:
 961                 /* TODO: accept (some) Beacons by default and other frames only
 962                  * if pending PS-Poll has been sent */
 963                 return true;
 964         case PS_MANUAL_POLL:
 965                 /* Allow unicast frames to own address if there is a pending
 966                  * PS-Poll */
 967                 if (data->ps_poll_pending &&
 968                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 969                         data->ps_poll_pending = false;
 970                         return true;
 971                 }
 972                 return false;
 973         }
 974
 975         return true;
 976 }
 977
 978 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 979                                   struct sk_buff *skb, int portid)
 980 {
 981         struct net *net;
 982         bool found = false;
 983         int res = -ENOENT;
 984
 985         rcu_read_lock();
 986         for_each_net_rcu(net) {
 987                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 988                         res = genlmsg_unicast(net, skb, portid);
 989                         found = true;
 990                         break;
 991                 }
 992         }
 993         rcu_read_unlock();
 994
 995         if (!found)
 996                 nlmsg_free(skb);
 997
 998         return res;
 999 }
1000
1001 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1002                                        struct sk_buff *my_skb,
1003                                        int dst_portid)
1004 {
1005         struct sk_buff *skb;
1006         struct mac80211_hwsim_data *data = hw->priv;
1007         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1008         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1009         void *msg_head;
1010         unsigned int hwsim_flags = 0;
1011         int i;
1012         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1013         uintptr_t cookie;
1014
1015         if (data->ps != PS_DISABLED)
1016                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1017         /* If the queue contains MAX_QUEUE skb's drop some */
1018         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1019                 /* Droping until WARN_QUEUE level */
1020                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1021                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1022                         data->tx_dropped++;
1023                 }
1024         }
1025
1026         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1027         if (skb == NULL)
1028                 goto nla_put_failure;
1029
1030         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1031                                HWSIM_CMD_FRAME);
1032         if (msg_head == NULL) {
1033                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1034                 goto nla_put_failure;
1035         }
1036
1037         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1038                     ETH_ALEN, data->addresses[1].addr))
1039                 goto nla_put_failure;
1040
1041         /* We get the skb->data */
1042         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1043                 goto nla_put_failure;
1044
1045         /* We get the flags for this transmission, and we translate them to
1046            wmediumd flags  */
1047
1048         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1049                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1050
1051         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1052                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1053
1054         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1055                 goto nla_put_failure;
1056
1057         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1058                 goto nla_put_failure;
1059
1060         /* We get the tx control (rate and retries) info*/
1061
1062         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1063                 tx_attempts[i].idx = info->status.rates[i].idx;
1064                 tx_attempts[i].count = info->status.rates[i].count;
1065         }
1066
1067         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1068                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1069                     tx_attempts))
1070                 goto nla_put_failure;
1071
1072         /* We create a cookie to identify this skb */
1073         data->pending_cookie++;
1074         cookie = data->pending_cookie;
1075         info->rate_driver_data[0] = (void *)cookie;
1076         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1077                 goto nla_put_failure;
1078
1079         genlmsg_end(skb, msg_head);
1080         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1081                 goto err_free_txskb;
1082
1083         /* Enqueue the packet */
1084         skb_queue_tail(&data->pending, my_skb);
1085         data->tx_pkts++;
1086         data->tx_bytes += my_skb->len;
1087         return;
1088
1089 nla_put_failure:
1090         nlmsg_free(skb);
1091 err_free_txskb:
1092         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1093         ieee80211_free_txskb(hw, my_skb);
1094         data->tx_failed++;
1095 }
1096
1097 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1098                                struct ieee80211_channel *c2)
1099 {
1100         if (!c1 || !c2)
1101                 return false;
1102
1103         return c1->center_freq == c2->center_freq;
1104 }
1105
1106 struct tx_iter_data {
1107         struct ieee80211_channel *channel;
1108         bool receive;
1109 };
1110
1111 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1112                                    struct ieee80211_vif *vif)
1113 {
1114         struct tx_iter_data *data = _data;
1115
1116         if (!vif->chanctx_conf)
1117                 return;
1118
1119         if (!hwsim_chans_compat(data->channel,
1120                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1121                 return;
1122
1123         data->receive = true;
1124 }
1125
1126 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1127 {
1128         /*
1129          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1130          * e.g. like this:
1131          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1132          * (but you should use a valid OUI, not that)
1133          *
1134          * If anyone wants to 'donate' a radiotap OUI/subns code
1135          * please send a patch removing this #ifdef and changing
1136          * the values accordingly.
1137          */
1138 #ifdef HWSIM_RADIOTAP_OUI
1139         struct ieee80211_vendor_radiotap *rtap;
1140
1141         /*
1142          * Note that this code requires the headroom in the SKB
1143          * that was allocated earlier.
1144          */
1145         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1146         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1147         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1148         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1149         rtap->subns = 127;
1150
1151         /*
1152          * Radiotap vendor namespaces can (and should) also be
1153          * split into fields by using the standard radiotap
1154          * presence bitmap mechanism. Use just BIT(0) here for
1155          * the presence bitmap.
1156          */
1157         rtap->present = BIT(0);
1158         /* We have 8 bytes of (dummy) data */
1159         rtap->len = 8;
1160         /* For testing, also require it to be aligned */
1161         rtap->align = 8;
1162         /* And also test that padding works, 4 bytes */
1163         rtap->pad = 4;
1164         /* push the data */
1165         memcpy(rtap->data, "ABCDEFGH", 8);
1166         /* make sure to clear padding, mac80211 doesn't */
1167         memset(rtap->data + 8, 0, 4);
1168
1169         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1170 #endif
1171 }
1172
1173 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1174                                           struct sk_buff *skb,
1175                                           struct ieee80211_channel *chan)
1176 {
1177         struct mac80211_hwsim_data *data = hw->priv, *data2;
1178         bool ack = false;
1179         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1180         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1181         struct ieee80211_rx_status rx_status;
1182         u64 now;
1183
1184         memset(&rx_status, 0, sizeof(rx_status));
1185         rx_status.flag |= RX_FLAG_MACTIME_START;
1186         rx_status.freq = chan->center_freq;
1187         rx_status.band = chan->band;
1188         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1189                 rx_status.rate_idx =
1190                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1191                 rx_status.vht_nss =
1192                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1193                 rx_status.flag |= RX_FLAG_VHT;
1194         } else {
1195                 rx_status.rate_idx = info->control.rates[0].idx;
1196                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1197                         rx_status.flag |= RX_FLAG_HT;
1198         }
1199         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1200                 rx_status.flag |= RX_FLAG_40MHZ;
1201         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1202                 rx_status.flag |= RX_FLAG_SHORT_GI;
1203         /* TODO: simulate real signal strength (and optional packet loss) */
1204         rx_status.signal = data->power_level - 50;
1205
1206         if (data->ps != PS_DISABLED)
1207                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1208
1209         /* release the skb's source info */
1210         skb_orphan(skb);
1211         skb_dst_drop(skb);
1212         skb->mark = 0;
1213         secpath_reset(skb);
1214         nf_reset(skb);
1215
1216         /*
1217          * Get absolute mactime here so all HWs RX at the "same time", and
1218          * absolute TX time for beacon mactime so the timestamp matches.
1219          * Giving beacons a different mactime than non-beacons looks messy, but
1220          * it helps the Toffset be exact and a ~10us mactime discrepancy
1221          * probably doesn't really matter.
1222          */
1223         if (ieee80211_is_beacon(hdr->frame_control) ||
1224             ieee80211_is_probe_resp(hdr->frame_control))
1225                 now = data->abs_bcn_ts;
1226         else
1227                 now = mac80211_hwsim_get_tsf_raw();
1228
1229         /* Copy skb to all enabled radios that are on the current frequency */
1230         spin_lock(&hwsim_radio_lock);
1231         list_for_each_entry(data2, &hwsim_radios, list) {
1232                 struct sk_buff *nskb;
1233                 struct tx_iter_data tx_iter_data = {
1234                         .receive = false,
1235                         .channel = chan,
1236                 };
1237
1238                 if (data == data2)
1239                         continue;
1240
1241                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1242                     !hwsim_ps_rx_ok(data2, skb))
1243                         continue;
1244
1245                 if (!(data->group & data2->group))
1246                         continue;
1247
1248                 if (data->netgroup != data2->netgroup)
1249                         continue;
1250
1251                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1252                     !hwsim_chans_compat(chan, data2->channel)) {
1253                         ieee80211_iterate_active_interfaces_atomic(
1254                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1255                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1256                         if (!tx_iter_data.receive)
1257                                 continue;
1258                 }
1259
1260                 /*
1261                  * reserve some space for our vendor and the normal
1262                  * radiotap header, since we're copying anyway
1263                  */
1264                 if (skb->len < PAGE_SIZE && paged_rx) {
1265                         struct page *page = alloc_page(GFP_ATOMIC);
1266
1267                         if (!page)
1268                                 continue;
1269
1270                         nskb = dev_alloc_skb(128);
1271                         if (!nskb) {
1272                                 __free_page(page);
1273                                 continue;
1274                         }
1275
1276                         memcpy(page_address(page), skb->data, skb->len);
1277                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1278                 } else {
1279                         nskb = skb_copy(skb, GFP_ATOMIC);
1280                         if (!nskb)
1281                                 continue;
1282                 }
1283
1284                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1285                         ack = true;
1286
1287                 rx_status.mactime = now + data2->tsf_offset;
1288
1289                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1290
1291                 mac80211_hwsim_add_vendor_rtap(nskb);
1292
1293                 data2->rx_pkts++;
1294                 data2->rx_bytes += nskb->len;
1295                 ieee80211_rx_irqsafe(data2->hw, nskb);
1296         }
1297         spin_unlock(&hwsim_radio_lock);
1298
1299         return ack;
1300 }
1301
1302 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1303                               struct ieee80211_tx_control *control,
1304                               struct sk_buff *skb)
1305 {
1306         struct mac80211_hwsim_data *data = hw->priv;
1307         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1308         struct ieee80211_hdr *hdr = (void *)skb->data;
1309         struct ieee80211_chanctx_conf *chanctx_conf;
1310         struct ieee80211_channel *channel;
1311         bool ack;
1312         u32 _portid;
1313
1314         if (WARN_ON(skb->len < 10)) {
1315                 /* Should not happen; just a sanity check for addr1 use */
1316                 ieee80211_free_txskb(hw, skb);
1317                 return;
1318         }
1319
1320         if (!data->use_chanctx) {
1321                 channel = data->channel;
1322         } else if (txi->hw_queue == 4) {
1323                 channel = data->tmp_chan;
1324         } else {
1325                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1326                 if (chanctx_conf)
1327                         channel = chanctx_conf->def.chan;
1328                 else
1329                         channel = NULL;
1330         }
1331
1332         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1333                 ieee80211_free_txskb(hw, skb);
1334                 return;
1335         }
1336
1337         if (data->idle && !data->tmp_chan) {
1338                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1339                 ieee80211_free_txskb(hw, skb);
1340                 return;
1341         }
1342
1343         if (txi->control.vif)
1344                 hwsim_check_magic(txi->control.vif);
1345         if (control->sta)
1346                 hwsim_check_sta_magic(control->sta);
1347
1348         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1349                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1350                                        txi->control.rates,
1351                                        ARRAY_SIZE(txi->control.rates));
1352
1353         txi->rate_driver_data[0] = channel;
1354
1355         if (skb->len >= 24 + 8 &&
1356             ieee80211_is_probe_resp(hdr->frame_control)) {
1357                 /* fake header transmission time */
1358                 struct ieee80211_mgmt *mgmt;
1359                 struct ieee80211_rate *txrate;
1360                 u64 ts;
1361
1362                 mgmt = (struct ieee80211_mgmt *)skb->data;
1363                 txrate = ieee80211_get_tx_rate(hw, txi);
1364                 ts = mac80211_hwsim_get_tsf_raw();
1365                 mgmt->u.probe_resp.timestamp =
1366                         cpu_to_le64(ts + data->tsf_offset +
1367                                     24 * 8 * 10 / txrate->bitrate);
1368         }
1369
1370         mac80211_hwsim_monitor_rx(hw, skb, channel);
1371
1372         /* wmediumd mode check */
1373         _portid = ACCESS_ONCE(data->wmediumd);
1374
1375         if (_portid)
1376                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1377
1378         /* NO wmediumd detected, perfect medium simulation */
1379         data->tx_pkts++;
1380         data->tx_bytes += skb->len;
1381         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1382
1383         if (ack && skb->len >= 16)
1384                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1385
1386         ieee80211_tx_info_clear_status(txi);
1387
1388         /* frame was transmitted at most favorable rate at first attempt */
1389         txi->control.rates[0].count = 1;
1390         txi->control.rates[1].idx = -1;
1391
1392         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1393                 txi->flags |= IEEE80211_TX_STAT_ACK;
1394         ieee80211_tx_status_irqsafe(hw, skb);
1395 }
1396
1397
1398 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1399 {
1400         struct mac80211_hwsim_data *data = hw->priv;
1401         wiphy_debug(hw->wiphy, "%s\n", __func__);
1402         data->started = true;
1403         return 0;
1404 }
1405
1406
1407 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1408 {
1409         struct mac80211_hwsim_data *data = hw->priv;
1410         data->started = false;
1411         tasklet_hrtimer_cancel(&data->beacon_timer);
1412         wiphy_debug(hw->wiphy, "%s\n", __func__);
1413 }
1414
1415
1416 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1417                                         struct ieee80211_vif *vif)
1418 {
1419         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1420                     __func__, ieee80211_vif_type_p2p(vif),
1421                     vif->addr);
1422         hwsim_set_magic(vif);
1423
1424         vif->cab_queue = 0;
1425         vif->hw_queue[IEEE80211_AC_VO] = 0;
1426         vif->hw_queue[IEEE80211_AC_VI] = 1;
1427         vif->hw_queue[IEEE80211_AC_BE] = 2;
1428         vif->hw_queue[IEEE80211_AC_BK] = 3;
1429
1430         return 0;
1431 }
1432
1433
1434 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1435                                            struct ieee80211_vif *vif,
1436                                            enum nl80211_iftype newtype,
1437                                            bool newp2p)
1438 {
1439         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1440         wiphy_debug(hw->wiphy,
1441                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1442                     __func__, ieee80211_vif_type_p2p(vif),
1443                     newtype, vif->addr);
1444         hwsim_check_magic(vif);
1445
1446         /*
1447          * interface may change from non-AP to AP in
1448          * which case this needs to be set up again
1449          */
1450         vif->cab_queue = 0;
1451
1452         return 0;
1453 }
1454
1455 static void mac80211_hwsim_remove_interface(
1456         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1457 {
1458         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1459                     __func__, ieee80211_vif_type_p2p(vif),
1460                     vif->addr);
1461         hwsim_check_magic(vif);
1462         hwsim_clear_magic(vif);
1463 }
1464
1465 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1466                                     struct sk_buff *skb,
1467                                     struct ieee80211_channel *chan)
1468 {
1469         struct mac80211_hwsim_data *data = hw->priv;
1470         u32 _pid = ACCESS_ONCE(data->wmediumd);
1471
1472         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1473                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1474                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1475                                        txi->control.rates,
1476                                        ARRAY_SIZE(txi->control.rates));
1477         }
1478
1479         mac80211_hwsim_monitor_rx(hw, skb, chan);
1480
1481         if (_pid)
1482                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1483
1484         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1485         dev_kfree_skb(skb);
1486 }
1487
1488 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1489                                      struct ieee80211_vif *vif)
1490 {
1491         struct mac80211_hwsim_data *data = arg;
1492         struct ieee80211_hw *hw = data->hw;
1493         struct ieee80211_tx_info *info;
1494         struct ieee80211_rate *txrate;
1495         struct ieee80211_mgmt *mgmt;
1496         struct sk_buff *skb;
1497
1498         hwsim_check_magic(vif);
1499
1500         if (vif->type != NL80211_IFTYPE_AP &&
1501             vif->type != NL80211_IFTYPE_MESH_POINT &&
1502             vif->type != NL80211_IFTYPE_ADHOC)
1503                 return;
1504
1505         skb = ieee80211_beacon_get(hw, vif);
1506         if (skb == NULL)
1507                 return;
1508         info = IEEE80211_SKB_CB(skb);
1509         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1510                 ieee80211_get_tx_rates(vif, NULL, skb,
1511                                        info->control.rates,
1512                                        ARRAY_SIZE(info->control.rates));
1513
1514         txrate = ieee80211_get_tx_rate(hw, info);
1515
1516         mgmt = (struct ieee80211_mgmt *) skb->data;
1517         /* fake header transmission time */
1518         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1519         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1520                                                data->tsf_offset +
1521                                                24 * 8 * 10 / txrate->bitrate);
1522
1523         mac80211_hwsim_tx_frame(hw, skb,
1524                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1525
1526         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1527                 ieee80211_csa_finish(vif);
1528 }
1529
1530 static enum hrtimer_restart
1531 mac80211_hwsim_beacon(struct hrtimer *timer)
1532 {
1533         struct mac80211_hwsim_data *data =
1534                 container_of(timer, struct mac80211_hwsim_data,
1535                              beacon_timer.timer);
1536         struct ieee80211_hw *hw = data->hw;
1537         u64 bcn_int = data->beacon_int;
1538         ktime_t next_bcn;
1539
1540         if (!data->started)
1541                 goto out;
1542
1543         ieee80211_iterate_active_interfaces_atomic(
1544                 hw, IEEE80211_IFACE_ITER_NORMAL,
1545                 mac80211_hwsim_beacon_tx, data);
1546
1547         /* beacon at new TBTT + beacon interval */
1548         if (data->bcn_delta) {
1549                 bcn_int -= data->bcn_delta;
1550                 data->bcn_delta = 0;
1551         }
1552
1553         next_bcn = ktime_add(hrtimer_get_expires(timer),
1554                              ns_to_ktime(bcn_int * 1000));
1555         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1556 out:
1557         return HRTIMER_NORESTART;
1558 }
1559
1560 static const char * const hwsim_chanwidths[] = {
1561         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1562         [NL80211_CHAN_WIDTH_20] = "ht20",
1563         [NL80211_CHAN_WIDTH_40] = "ht40",
1564         [NL80211_CHAN_WIDTH_80] = "vht80",
1565         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1566         [NL80211_CHAN_WIDTH_160] = "vht160",
1567 };
1568
1569 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1570 {
1571         struct mac80211_hwsim_data *data = hw->priv;
1572         struct ieee80211_conf *conf = &hw->conf;
1573         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1574                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1575                 [IEEE80211_SMPS_OFF] = "off",
1576                 [IEEE80211_SMPS_STATIC] = "static",
1577                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1578         };
1579
1580         if (conf->chandef.chan)
1581                 wiphy_debug(hw->wiphy,
1582                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1583                             __func__,
1584                             conf->chandef.chan->center_freq,
1585                             conf->chandef.center_freq1,
1586                             conf->chandef.center_freq2,
1587                             hwsim_chanwidths[conf->chandef.width],
1588                             !!(conf->flags & IEEE80211_CONF_IDLE),
1589                             !!(conf->flags & IEEE80211_CONF_PS),
1590                             smps_modes[conf->smps_mode]);
1591         else
1592                 wiphy_debug(hw->wiphy,
1593                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1594                             __func__,
1595                             !!(conf->flags & IEEE80211_CONF_IDLE),
1596                             !!(conf->flags & IEEE80211_CONF_PS),
1597                             smps_modes[conf->smps_mode]);
1598
1599         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1600
1601         data->channel = conf->chandef.chan;
1602
1603         WARN_ON(data->channel && data->use_chanctx);
1604
1605         data->power_level = conf->power_level;
1606         if (!data->started || !data->beacon_int)
1607                 tasklet_hrtimer_cancel(&data->beacon_timer);
1608         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1609                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1610                 u32 bcn_int = data->beacon_int;
1611                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1612
1613                 tasklet_hrtimer_start(&data->beacon_timer,
1614                                       ns_to_ktime(until_tbtt * 1000),
1615                                       HRTIMER_MODE_REL);
1616         }
1617
1618         return 0;
1619 }
1620
1621
1622 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1623                                             unsigned int changed_flags,
1624                                             unsigned int *total_flags,u64 multicast)
1625 {
1626         struct mac80211_hwsim_data *data = hw->priv;
1627
1628         wiphy_debug(hw->wiphy, "%s\n", __func__);
1629
1630         data->rx_filter = 0;
1631         if (*total_flags & FIF_ALLMULTI)
1632                 data->rx_filter |= FIF_ALLMULTI;
1633
1634         *total_flags = data->rx_filter;
1635 }
1636
1637 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1638                                        struct ieee80211_vif *vif)
1639 {
1640         unsigned int *count = data;
1641         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1642
1643         if (vp->bcn_en)
1644                 (*count)++;
1645 }
1646
1647 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1648                                             struct ieee80211_vif *vif,
1649                                             struct ieee80211_bss_conf *info,
1650                                             u32 changed)
1651 {
1652         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1653         struct mac80211_hwsim_data *data = hw->priv;
1654
1655         hwsim_check_magic(vif);
1656
1657         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1658                     __func__, changed, vif->addr);
1659
1660         if (changed & BSS_CHANGED_BSSID) {
1661                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1662                             __func__, info->bssid);
1663                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1664         }
1665
1666         if (changed & BSS_CHANGED_ASSOC) {
1667                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1668                             info->assoc, info->aid);
1669                 vp->assoc = info->assoc;
1670                 vp->aid = info->aid;
1671         }
1672
1673         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1674                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1675                             info->enable_beacon, info->beacon_int);
1676                 vp->bcn_en = info->enable_beacon;
1677                 if (data->started &&
1678                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1679                     info->enable_beacon) {
1680                         u64 tsf, until_tbtt;
1681                         u32 bcn_int;
1682                         data->beacon_int = info->beacon_int * 1024;
1683                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1684                         bcn_int = data->beacon_int;
1685                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1686                         tasklet_hrtimer_start(&data->beacon_timer,
1687                                               ns_to_ktime(until_tbtt * 1000),
1688                                               HRTIMER_MODE_REL);
1689                 } else if (!info->enable_beacon) {
1690                         unsigned int count = 0;
1691                         ieee80211_iterate_active_interfaces_atomic(
1692                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1693                                 mac80211_hwsim_bcn_en_iter, &count);
1694                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1695                                     count);
1696                         if (count == 0) {
1697                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1698                                 data->beacon_int = 0;
1699                         }
1700                 }
1701         }
1702
1703         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1704                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1705                             info->use_cts_prot);
1706         }
1707
1708         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1709                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1710                             info->use_short_preamble);
1711         }
1712
1713         if (changed & BSS_CHANGED_ERP_SLOT) {
1714                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1715         }
1716
1717         if (changed & BSS_CHANGED_HT) {
1718                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1719                             info->ht_operation_mode);
1720         }
1721
1722         if (changed & BSS_CHANGED_BASIC_RATES) {
1723                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1724                             (unsigned long long) info->basic_rates);
1725         }
1726
1727         if (changed & BSS_CHANGED_TXPOWER)
1728                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1729 }
1730
1731 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1732                                   struct ieee80211_vif *vif,
1733                                   struct ieee80211_sta *sta)
1734 {
1735         hwsim_check_magic(vif);
1736         hwsim_set_sta_magic(sta);
1737
1738         return 0;
1739 }
1740
1741 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1742                                      struct ieee80211_vif *vif,
1743                                      struct ieee80211_sta *sta)
1744 {
1745         hwsim_check_magic(vif);
1746         hwsim_clear_sta_magic(sta);
1747
1748         return 0;
1749 }
1750
1751 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1752                                       struct ieee80211_vif *vif,
1753                                       enum sta_notify_cmd cmd,
1754                                       struct ieee80211_sta *sta)
1755 {
1756         hwsim_check_magic(vif);
1757
1758         switch (cmd) {
1759         case STA_NOTIFY_SLEEP:
1760         case STA_NOTIFY_AWAKE:
1761                 /* TODO: make good use of these flags */
1762                 break;
1763         default:
1764                 WARN(1, "Invalid sta notify: %d\n", cmd);
1765                 break;
1766         }
1767 }
1768
1769 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1770                                   struct ieee80211_sta *sta,
1771                                   bool set)
1772 {
1773         hwsim_check_sta_magic(sta);
1774         return 0;
1775 }
1776
1777 static int mac80211_hwsim_conf_tx(
1778         struct ieee80211_hw *hw,
1779         struct ieee80211_vif *vif, u16 queue,
1780         const struct ieee80211_tx_queue_params *params)
1781 {
1782         wiphy_debug(hw->wiphy,
1783                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1784                     __func__, queue,
1785                     params->txop, params->cw_min,
1786                     params->cw_max, params->aifs);
1787         return 0;
1788 }
1789
1790 static int mac80211_hwsim_get_survey(
1791         struct ieee80211_hw *hw, int idx,
1792         struct survey_info *survey)
1793 {
1794         struct ieee80211_conf *conf = &hw->conf;
1795
1796         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1797
1798         if (idx != 0)
1799                 return -ENOENT;
1800
1801         /* Current channel */
1802         survey->channel = conf->chandef.chan;
1803
1804         /*
1805          * Magically conjured noise level --- this is only ok for simulated hardware.
1806          *
1807          * A real driver which cannot determine the real channel noise MUST NOT
1808          * report any noise, especially not a magically conjured one :-)
1809          */
1810         survey->filled = SURVEY_INFO_NOISE_DBM;
1811         survey->noise = -92;
1812
1813         return 0;
1814 }
1815
1816 #ifdef CONFIG_NL80211_TESTMODE
1817 /*
1818  * This section contains example code for using netlink
1819  * attributes with the testmode command in nl80211.
1820  */
1821
1822 /* These enums need to be kept in sync with userspace */
1823 enum hwsim_testmode_attr {
1824         __HWSIM_TM_ATTR_INVALID = 0,
1825         HWSIM_TM_ATTR_CMD       = 1,
1826         HWSIM_TM_ATTR_PS        = 2,
1827
1828         /* keep last */
1829         __HWSIM_TM_ATTR_AFTER_LAST,
1830         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1831 };
1832
1833 enum hwsim_testmode_cmd {
1834         HWSIM_TM_CMD_SET_PS             = 0,
1835         HWSIM_TM_CMD_GET_PS             = 1,
1836         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1837         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1838 };
1839
1840 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1841         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1842         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1843 };
1844
1845 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1846                                        struct ieee80211_vif *vif,
1847                                        void *data, int len)
1848 {
1849         struct mac80211_hwsim_data *hwsim = hw->priv;
1850         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1851         struct sk_buff *skb;
1852         int err, ps;
1853
1854         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1855                         hwsim_testmode_policy);
1856         if (err)
1857                 return err;
1858
1859         if (!tb[HWSIM_TM_ATTR_CMD])
1860                 return -EINVAL;
1861
1862         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1863         case HWSIM_TM_CMD_SET_PS:
1864                 if (!tb[HWSIM_TM_ATTR_PS])
1865                         return -EINVAL;
1866                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1867                 return hwsim_fops_ps_write(hwsim, ps);
1868         case HWSIM_TM_CMD_GET_PS:
1869                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1870                                                 nla_total_size(sizeof(u32)));
1871                 if (!skb)
1872                         return -ENOMEM;
1873                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1874                         goto nla_put_failure;
1875                 return cfg80211_testmode_reply(skb);
1876         case HWSIM_TM_CMD_STOP_QUEUES:
1877                 ieee80211_stop_queues(hw);
1878                 return 0;
1879         case HWSIM_TM_CMD_WAKE_QUEUES:
1880                 ieee80211_wake_queues(hw);
1881                 return 0;
1882         default:
1883                 return -EOPNOTSUPP;
1884         }
1885
1886  nla_put_failure:
1887         kfree_skb(skb);
1888         return -ENOBUFS;
1889 }
1890 #endif
1891
1892 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1893                                        struct ieee80211_vif *vif,
1894                                        struct ieee80211_ampdu_params *params)
1895 {
1896         struct ieee80211_sta *sta = params->sta;
1897         enum ieee80211_ampdu_mlme_action action = params->action;
1898         u16 tid = params->tid;
1899
1900         switch (action) {
1901         case IEEE80211_AMPDU_TX_START:
1902                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1903                 break;
1904         case IEEE80211_AMPDU_TX_STOP_CONT:
1905         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1906         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1907                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1908                 break;
1909         case IEEE80211_AMPDU_TX_OPERATIONAL:
1910                 break;
1911         case IEEE80211_AMPDU_RX_START:
1912         case IEEE80211_AMPDU_RX_STOP:
1913                 break;
1914         default:
1915                 return -EOPNOTSUPP;
1916         }
1917
1918         return 0;
1919 }
1920
1921 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1922                                  struct ieee80211_vif *vif,
1923                                  u32 queues, bool drop)
1924 {
1925         /* Not implemented, queues only on kernel side */
1926 }
1927
1928 static void hw_scan_work(struct work_struct *work)
1929 {
1930         struct mac80211_hwsim_data *hwsim =
1931                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1932         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1933         int dwell, i;
1934
1935         mutex_lock(&hwsim->mutex);
1936         if (hwsim->scan_chan_idx >= req->n_channels) {
1937                 struct cfg80211_scan_info info = {
1938                         .aborted = false,
1939                 };
1940
1941                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1942                 ieee80211_scan_completed(hwsim->hw, &info);
1943                 hwsim->hw_scan_request = NULL;
1944                 hwsim->hw_scan_vif = NULL;
1945                 hwsim->tmp_chan = NULL;
1946                 mutex_unlock(&hwsim->mutex);
1947                 return;
1948         }
1949
1950         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1951                     req->channels[hwsim->scan_chan_idx]->center_freq);
1952
1953         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1954         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1955                                       IEEE80211_CHAN_RADAR) ||
1956             !req->n_ssids) {
1957                 dwell = 120;
1958         } else {
1959                 dwell = 30;
1960                 /* send probes */
1961                 for (i = 0; i < req->n_ssids; i++) {
1962                         struct sk_buff *probe;
1963                         struct ieee80211_mgmt *mgmt;
1964
1965                         probe = ieee80211_probereq_get(hwsim->hw,
1966                                                        hwsim->scan_addr,
1967                                                        req->ssids[i].ssid,
1968                                                        req->ssids[i].ssid_len,
1969                                                        req->ie_len);
1970                         if (!probe)
1971                                 continue;
1972
1973                         mgmt = (struct ieee80211_mgmt *) probe->data;
1974                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
1975                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
1976
1977                         if (req->ie_len)
1978                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1979                                        req->ie_len);
1980
1981                         local_bh_disable();
1982                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1983                                                 hwsim->tmp_chan);
1984                         local_bh_enable();
1985                 }
1986         }
1987         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1988                                      msecs_to_jiffies(dwell));
1989         hwsim->scan_chan_idx++;
1990         mutex_unlock(&hwsim->mutex);
1991 }
1992
1993 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1994                                   struct ieee80211_vif *vif,
1995                                   struct ieee80211_scan_request *hw_req)
1996 {
1997         struct mac80211_hwsim_data *hwsim = hw->priv;
1998         struct cfg80211_scan_request *req = &hw_req->req;
1999
2000         mutex_lock(&hwsim->mutex);
2001         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2002                 mutex_unlock(&hwsim->mutex);
2003                 return -EBUSY;
2004         }
2005         hwsim->hw_scan_request = req;
2006         hwsim->hw_scan_vif = vif;
2007         hwsim->scan_chan_idx = 0;
2008         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2009                 get_random_mask_addr(hwsim->scan_addr,
2010                                      hw_req->req.mac_addr,
2011                                      hw_req->req.mac_addr_mask);
2012         else
2013                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2014         mutex_unlock(&hwsim->mutex);
2015
2016         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2017
2018         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2019
2020         return 0;
2021 }
2022
2023 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2024                                           struct ieee80211_vif *vif)
2025 {
2026         struct mac80211_hwsim_data *hwsim = hw->priv;
2027         struct cfg80211_scan_info info = {
2028                 .aborted = true,
2029         };
2030
2031         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2032
2033         cancel_delayed_work_sync(&hwsim->hw_scan);
2034
2035         mutex_lock(&hwsim->mutex);
2036         ieee80211_scan_completed(hwsim->hw, &info);
2037         hwsim->tmp_chan = NULL;
2038         hwsim->hw_scan_request = NULL;
2039         hwsim->hw_scan_vif = NULL;
2040         mutex_unlock(&hwsim->mutex);
2041 }
2042
2043 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2044                                    struct ieee80211_vif *vif,
2045                                    const u8 *mac_addr)
2046 {
2047         struct mac80211_hwsim_data *hwsim = hw->priv;
2048
2049         mutex_lock(&hwsim->mutex);
2050
2051         if (hwsim->scanning) {
2052                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2053                 goto out;
2054         }
2055
2056         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2057
2058         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2059         hwsim->scanning = true;
2060
2061 out:
2062         mutex_unlock(&hwsim->mutex);
2063 }
2064
2065 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2066                                             struct ieee80211_vif *vif)
2067 {
2068         struct mac80211_hwsim_data *hwsim = hw->priv;
2069
2070         mutex_lock(&hwsim->mutex);
2071
2072         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2073         hwsim->scanning = false;
2074         eth_zero_addr(hwsim->scan_addr);
2075
2076         mutex_unlock(&hwsim->mutex);
2077 }
2078
2079 static void hw_roc_start(struct work_struct *work)
2080 {
2081         struct mac80211_hwsim_data *hwsim =
2082                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2083
2084         mutex_lock(&hwsim->mutex);
2085
2086         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2087         hwsim->tmp_chan = hwsim->roc_chan;
2088         ieee80211_ready_on_channel(hwsim->hw);
2089
2090         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2091                                      msecs_to_jiffies(hwsim->roc_duration));
2092
2093         mutex_unlock(&hwsim->mutex);
2094 }
2095
2096 static void hw_roc_done(struct work_struct *work)
2097 {
2098         struct mac80211_hwsim_data *hwsim =
2099                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2100
2101         mutex_lock(&hwsim->mutex);
2102         ieee80211_remain_on_channel_expired(hwsim->hw);
2103         hwsim->tmp_chan = NULL;
2104         mutex_unlock(&hwsim->mutex);
2105
2106         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2107 }
2108
2109 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2110                               struct ieee80211_vif *vif,
2111                               struct ieee80211_channel *chan,
2112                               int duration,
2113                               enum ieee80211_roc_type type)
2114 {
2115         struct mac80211_hwsim_data *hwsim = hw->priv;
2116
2117         mutex_lock(&hwsim->mutex);
2118         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2119                 mutex_unlock(&hwsim->mutex);
2120                 return -EBUSY;
2121         }
2122
2123         hwsim->roc_chan = chan;
2124         hwsim->roc_duration = duration;
2125         mutex_unlock(&hwsim->mutex);
2126
2127         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2128                     chan->center_freq, duration);
2129         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2130
2131         return 0;
2132 }
2133
2134 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2135 {
2136         struct mac80211_hwsim_data *hwsim = hw->priv;
2137
2138         cancel_delayed_work_sync(&hwsim->roc_start);
2139         cancel_delayed_work_sync(&hwsim->roc_done);
2140
2141         mutex_lock(&hwsim->mutex);
2142         hwsim->tmp_chan = NULL;
2143         mutex_unlock(&hwsim->mutex);
2144
2145         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2146
2147         return 0;
2148 }
2149
2150 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2151                                       struct ieee80211_chanctx_conf *ctx)
2152 {
2153         hwsim_set_chanctx_magic(ctx);
2154         wiphy_debug(hw->wiphy,
2155                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2156                     ctx->def.chan->center_freq, ctx->def.width,
2157                     ctx->def.center_freq1, ctx->def.center_freq2);
2158         return 0;
2159 }
2160
2161 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2162                                           struct ieee80211_chanctx_conf *ctx)
2163 {
2164         wiphy_debug(hw->wiphy,
2165                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2166                     ctx->def.chan->center_freq, ctx->def.width,
2167                     ctx->def.center_freq1, ctx->def.center_freq2);
2168         hwsim_check_chanctx_magic(ctx);
2169         hwsim_clear_chanctx_magic(ctx);
2170 }
2171
2172 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2173                                           struct ieee80211_chanctx_conf *ctx,
2174                                           u32 changed)
2175 {
2176         hwsim_check_chanctx_magic(ctx);
2177         wiphy_debug(hw->wiphy,
2178                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2179                     ctx->def.chan->center_freq, ctx->def.width,
2180                     ctx->def.center_freq1, ctx->def.center_freq2);
2181 }
2182
2183 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2184                                              struct ieee80211_vif *vif,
2185                                              struct ieee80211_chanctx_conf *ctx)
2186 {
2187         hwsim_check_magic(vif);
2188         hwsim_check_chanctx_magic(ctx);
2189
2190         return 0;
2191 }
2192
2193 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2194                                                 struct ieee80211_vif *vif,
2195                                                 struct ieee80211_chanctx_conf *ctx)
2196 {
2197         hwsim_check_magic(vif);
2198         hwsim_check_chanctx_magic(ctx);
2199 }
2200
2201 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2202         "tx_pkts_nic",
2203         "tx_bytes_nic",
2204         "rx_pkts_nic",
2205         "rx_bytes_nic",
2206         "d_tx_dropped",
2207         "d_tx_failed",
2208         "d_ps_mode",
2209         "d_group",
2210         "d_tx_power",
2211 };
2212
2213 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2214
2215 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2216                                           struct ieee80211_vif *vif,
2217                                           u32 sset, u8 *data)
2218 {
2219         if (sset == ETH_SS_STATS)
2220                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2221                        sizeof(mac80211_hwsim_gstrings_stats));
2222 }
2223
2224 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2225                                             struct ieee80211_vif *vif, int sset)
2226 {
2227         if (sset == ETH_SS_STATS)
2228                 return MAC80211_HWSIM_SSTATS_LEN;
2229         return 0;
2230 }
2231
2232 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2233                                         struct ieee80211_vif *vif,
2234                                         struct ethtool_stats *stats, u64 *data)
2235 {
2236         struct mac80211_hwsim_data *ar = hw->priv;
2237         int i = 0;
2238
2239         data[i++] = ar->tx_pkts;
2240         data[i++] = ar->tx_bytes;
2241         data[i++] = ar->rx_pkts;
2242         data[i++] = ar->rx_bytes;
2243         data[i++] = ar->tx_dropped;
2244         data[i++] = ar->tx_failed;
2245         data[i++] = ar->ps;
2246         data[i++] = ar->group;
2247         data[i++] = ar->power_level;
2248
2249         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2250 }
2251
2252 #define HWSIM_COMMON_OPS                                        \
2253         .tx = mac80211_hwsim_tx,                                \
2254         .start = mac80211_hwsim_start,                          \
2255         .stop = mac80211_hwsim_stop,                            \
2256         .add_interface = mac80211_hwsim_add_interface,          \
2257         .change_interface = mac80211_hwsim_change_interface,    \
2258         .remove_interface = mac80211_hwsim_remove_interface,    \
2259         .config = mac80211_hwsim_config,                        \
2260         .configure_filter = mac80211_hwsim_configure_filter,    \
2261         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2262         .sta_add = mac80211_hwsim_sta_add,                      \
2263         .sta_remove = mac80211_hwsim_sta_remove,                \
2264         .sta_notify = mac80211_hwsim_sta_notify,                \
2265         .set_tim = mac80211_hwsim_set_tim,                      \
2266         .conf_tx = mac80211_hwsim_conf_tx,                      \
2267         .get_survey = mac80211_hwsim_get_survey,                \
2268         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2269         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2270         .flush = mac80211_hwsim_flush,                          \
2271         .get_tsf = mac80211_hwsim_get_tsf,                      \
2272         .set_tsf = mac80211_hwsim_set_tsf,                      \
2273         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2274         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2275         .get_et_strings = mac80211_hwsim_get_et_strings,
2276
2277 static const struct ieee80211_ops mac80211_hwsim_ops = {
2278         HWSIM_COMMON_OPS
2279         .sw_scan_start = mac80211_hwsim_sw_scan,
2280         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2281 };
2282
2283 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2284         HWSIM_COMMON_OPS
2285         .hw_scan = mac80211_hwsim_hw_scan,
2286         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2287         .sw_scan_start = NULL,
2288         .sw_scan_complete = NULL,
2289         .remain_on_channel = mac80211_hwsim_roc,
2290         .cancel_remain_on_channel = mac80211_hwsim_croc,
2291         .add_chanctx = mac80211_hwsim_add_chanctx,
2292         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2293         .change_chanctx = mac80211_hwsim_change_chanctx,
2294         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2295         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2296 };
2297
2298 struct hwsim_new_radio_params {
2299         unsigned int channels;
2300         const char *reg_alpha2;
2301         const struct ieee80211_regdomain *regd;
2302         bool reg_strict;
2303         bool p2p_device;
2304         bool use_chanctx;
2305         bool destroy_on_close;
2306         const char *hwname;
2307         bool no_vif;
2308 };
2309
2310 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2311                                    struct genl_info *info)
2312 {
2313         if (info)
2314                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2315                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2316         else
2317                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2318                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2319 }
2320
2321 static int append_radio_msg(struct sk_buff *skb, int id,
2322                             struct hwsim_new_radio_params *param)
2323 {
2324         int ret;
2325
2326         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2327         if (ret < 0)
2328                 return ret;
2329
2330         if (param->channels) {
2331                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2332                 if (ret < 0)
2333                         return ret;
2334         }
2335
2336         if (param->reg_alpha2) {
2337                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2338                               param->reg_alpha2);
2339                 if (ret < 0)
2340                         return ret;
2341         }
2342
2343         if (param->regd) {
2344                 int i;
2345
2346                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2347                         if (hwsim_world_regdom_custom[i] != param->regd)
2348                                 continue;
2349
2350                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2351                         if (ret < 0)
2352                                 return ret;
2353                         break;
2354                 }
2355         }
2356
2357         if (param->reg_strict) {
2358                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2359                 if (ret < 0)
2360                         return ret;
2361         }
2362
2363         if (param->p2p_device) {
2364                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2365                 if (ret < 0)
2366                         return ret;
2367         }
2368
2369         if (param->use_chanctx) {
2370                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2371                 if (ret < 0)
2372                         return ret;
2373         }
2374
2375         if (param->hwname) {
2376                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2377                               strlen(param->hwname), param->hwname);
2378                 if (ret < 0)
2379                         return ret;
2380         }
2381
2382         return 0;
2383 }
2384
2385 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2386                                   struct hwsim_new_radio_params *param)
2387 {
2388         struct sk_buff *mcast_skb;
2389         void *data;
2390
2391         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2392         if (!mcast_skb)
2393                 return;
2394
2395         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2396                            HWSIM_CMD_NEW_RADIO);
2397         if (!data)
2398                 goto out_err;
2399
2400         if (append_radio_msg(mcast_skb, id, param) < 0)
2401                 goto out_err;
2402
2403         genlmsg_end(mcast_skb, data);
2404
2405         hwsim_mcast_config_msg(mcast_skb, info);
2406         return;
2407
2408 out_err:
2409         genlmsg_cancel(mcast_skb, data);
2410         nlmsg_free(mcast_skb);
2411 }
2412
2413 static int mac80211_hwsim_new_radio(struct genl_info *info,
2414                                     struct hwsim_new_radio_params *param)
2415 {
2416         int err;
2417         u8 addr[ETH_ALEN];
2418         struct mac80211_hwsim_data *data;
2419         struct ieee80211_hw *hw;
2420         enum nl80211_band band;
2421         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2422         struct net *net;
2423         int idx;
2424
2425         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2426                 return -EINVAL;
2427
2428         spin_lock_bh(&hwsim_radio_lock);
2429         idx = hwsim_radio_idx++;
2430         spin_unlock_bh(&hwsim_radio_lock);
2431
2432         if (param->use_chanctx)
2433                 ops = &mac80211_hwsim_mchan_ops;
2434         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2435         if (!hw) {
2436                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2437                 err = -ENOMEM;
2438                 goto failed;
2439         }
2440
2441         if (info)
2442                 net = genl_info_net(info);
2443         else
2444                 net = &init_net;
2445         wiphy_net_set(hw->wiphy, net);
2446
2447         data = hw->priv;
2448         data->hw = hw;
2449
2450         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2451         if (IS_ERR(data->dev)) {
2452                 printk(KERN_DEBUG
2453                        "mac80211_hwsim: device_create failed (%ld)\n",
2454                        PTR_ERR(data->dev));
2455                 err = -ENOMEM;
2456                 goto failed_drvdata;
2457         }
2458         data->dev->driver = &mac80211_hwsim_driver.driver;
2459         err = device_bind_driver(data->dev);
2460         if (err != 0) {
2461                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2462                        err);
2463                 goto failed_bind;
2464         }
2465
2466         skb_queue_head_init(&data->pending);
2467
2468         SET_IEEE80211_DEV(hw, data->dev);
2469         eth_zero_addr(addr);
2470         addr[0] = 0x02;
2471         addr[3] = idx >> 8;
2472         addr[4] = idx;
2473         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2474         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2475         data->addresses[1].addr[0] |= 0x40;
2476         hw->wiphy->n_addresses = 2;
2477         hw->wiphy->addresses = data->addresses;
2478
2479         data->channels = param->channels;
2480         data->use_chanctx = param->use_chanctx;
2481         data->idx = idx;
2482         data->destroy_on_close = param->destroy_on_close;
2483         if (info)
2484                 data->portid = info->snd_portid;
2485
2486         if (data->use_chanctx) {
2487                 hw->wiphy->max_scan_ssids = 255;
2488                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2489                 hw->wiphy->max_remain_on_channel_duration = 1000;
2490                 hw->wiphy->iface_combinations = &data->if_combination;
2491                 if (param->p2p_device)
2492                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2493                 else
2494                         data->if_combination = hwsim_if_comb[0];
2495                 hw->wiphy->n_iface_combinations = 1;
2496                 /* For channels > 1 DFS is not allowed */
2497                 data->if_combination.radar_detect_widths = 0;
2498                 data->if_combination.num_different_channels = data->channels;
2499         } else if (param->p2p_device) {
2500                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2501                 hw->wiphy->n_iface_combinations =
2502                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2503         } else {
2504                 hw->wiphy->iface_combinations = hwsim_if_comb;
2505                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2506         }
2507
2508         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2509         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2510         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2511
2512         hw->queues = 5;
2513         hw->offchannel_tx_hw_queue = 4;
2514         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2515                                      BIT(NL80211_IFTYPE_AP) |
2516                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2517                                      BIT(NL80211_IFTYPE_P2P_GO) |
2518                                      BIT(NL80211_IFTYPE_ADHOC) |
2519                                      BIT(NL80211_IFTYPE_MESH_POINT);
2520
2521         if (param->p2p_device)
2522                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2523
2524         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2525         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2526         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2527         ieee80211_hw_set(hw, QUEUE_CONTROL);
2528         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2529         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2530         ieee80211_hw_set(hw, MFP_CAPABLE);
2531         ieee80211_hw_set(hw, SIGNAL_DBM);
2532         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2533         if (rctbl)
2534                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2535
2536         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2537                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2538                             WIPHY_FLAG_AP_UAPSD |
2539                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2540         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2541                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2542                                NL80211_FEATURE_STATIC_SMPS |
2543                                NL80211_FEATURE_DYNAMIC_SMPS |
2544                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2545         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2546
2547         /* ask mac80211 to reserve space for magic */
2548         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2549         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2550         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2551
2552         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2553                 sizeof(hwsim_channels_2ghz));
2554         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2555                 sizeof(hwsim_channels_5ghz));
2556         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2557
2558         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2559                 struct ieee80211_supported_band *sband = &data->bands[band];
2560                 switch (band) {
2561                 case NL80211_BAND_2GHZ:
2562                         sband->channels = data->channels_2ghz;
2563                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2564                         sband->bitrates = data->rates;
2565                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2566                         break;
2567                 case NL80211_BAND_5GHZ:
2568                         sband->channels = data->channels_5ghz;
2569                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2570                         sband->bitrates = data->rates + 4;
2571                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2572
2573                         sband->vht_cap.vht_supported = true;
2574                         sband->vht_cap.cap =
2575                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2576                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2577                                 IEEE80211_VHT_CAP_RXLDPC |
2578                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2579                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2580                                 IEEE80211_VHT_CAP_TXSTBC |
2581                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2582                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2583                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2584                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2585                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2586                         sband->vht_cap.vht_mcs.rx_mcs_map =
2587                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2588                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2589                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2590                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2591                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2592                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2593                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2594                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2595                         sband->vht_cap.vht_mcs.tx_mcs_map =
2596                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2597                         break;
2598                 default:
2599                         continue;
2600                 }
2601
2602                 sband->ht_cap.ht_supported = true;
2603                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2604                                     IEEE80211_HT_CAP_GRN_FLD |
2605                                     IEEE80211_HT_CAP_SGI_20 |
2606                                     IEEE80211_HT_CAP_SGI_40 |
2607                                     IEEE80211_HT_CAP_DSSSCCK40;
2608                 sband->ht_cap.ampdu_factor = 0x3;
2609                 sband->ht_cap.ampdu_density = 0x6;
2610                 memset(&sband->ht_cap.mcs, 0,
2611                        sizeof(sband->ht_cap.mcs));
2612                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2613                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2614                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2615
2616                 hw->wiphy->bands[band] = sband;
2617         }
2618
2619         /* By default all radios belong to the first group */
2620         data->group = 1;
2621         mutex_init(&data->mutex);
2622
2623         data->netgroup = hwsim_net_get_netgroup(net);
2624
2625         /* Enable frame retransmissions for lossy channels */
2626         hw->max_rates = 4;
2627         hw->max_rate_tries = 11;
2628
2629         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2630         hw->wiphy->n_vendor_commands =
2631                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2632         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2633         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2634
2635         if (param->reg_strict)
2636                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2637         if (param->regd) {
2638                 data->regd = param->regd;
2639                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2640                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2641                 /* give the regulatory workqueue a chance to run */
2642                 schedule_timeout_interruptible(1);
2643         }
2644
2645         if (param->no_vif)
2646                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2647
2648         err = ieee80211_register_hw(hw);
2649         if (err < 0) {
2650                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2651                        err);
2652                 goto failed_hw;
2653         }
2654
2655         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2656
2657         if (param->reg_alpha2) {
2658                 data->alpha2[0] = param->reg_alpha2[0];
2659                 data->alpha2[1] = param->reg_alpha2[1];
2660                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2661         }
2662
2663         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2664         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2665         debugfs_create_file("group", 0666, data->debugfs, data,
2666                             &hwsim_fops_group);
2667         if (!data->use_chanctx)
2668                 debugfs_create_file("dfs_simulate_radar", 0222,
2669                                     data->debugfs,
2670                                     data, &hwsim_simulate_radar);
2671
2672         tasklet_hrtimer_init(&data->beacon_timer,
2673                              mac80211_hwsim_beacon,
2674                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2675
2676         spin_lock_bh(&hwsim_radio_lock);
2677         list_add_tail(&data->list, &hwsim_radios);
2678         spin_unlock_bh(&hwsim_radio_lock);
2679
2680         if (idx > 0)
2681                 hwsim_mcast_new_radio(idx, info, param);
2682
2683         return idx;
2684
2685 failed_hw:
2686         device_release_driver(data->dev);
2687 failed_bind:
2688         device_unregister(data->dev);
2689 failed_drvdata:
2690         ieee80211_free_hw(hw);
2691 failed:
2692         return err;
2693 }
2694
2695 static void hwsim_mcast_del_radio(int id, const char *hwname,
2696                                   struct genl_info *info)
2697 {
2698         struct sk_buff *skb;
2699         void *data;
2700         int ret;
2701
2702         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2703         if (!skb)
2704                 return;
2705
2706         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2707                            HWSIM_CMD_DEL_RADIO);
2708         if (!data)
2709                 goto error;
2710
2711         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2712         if (ret < 0)
2713                 goto error;
2714
2715         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2716                       hwname);
2717         if (ret < 0)
2718                 goto error;
2719
2720         genlmsg_end(skb, data);
2721
2722         hwsim_mcast_config_msg(skb, info);
2723
2724         return;
2725
2726 error:
2727         nlmsg_free(skb);
2728 }
2729
2730 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2731                                      const char *hwname,
2732                                      struct genl_info *info)
2733 {
2734         hwsim_mcast_del_radio(data->idx, hwname, info);
2735         debugfs_remove_recursive(data->debugfs);
2736         ieee80211_unregister_hw(data->hw);
2737         device_release_driver(data->dev);
2738         device_unregister(data->dev);
2739         ieee80211_free_hw(data->hw);
2740 }
2741
2742 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2743                                     struct mac80211_hwsim_data *data,
2744                                     u32 portid, u32 seq,
2745                                     struct netlink_callback *cb, int flags)
2746 {
2747         void *hdr;
2748         struct hwsim_new_radio_params param = { };
2749         int res = -EMSGSIZE;
2750
2751         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2752                           HWSIM_CMD_GET_RADIO);
2753         if (!hdr)
2754                 return -EMSGSIZE;
2755
2756         if (cb)
2757                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2758
2759         if (data->alpha2[0] && data->alpha2[1])
2760                 param.reg_alpha2 = data->alpha2;
2761
2762         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2763                                         REGULATORY_STRICT_REG);
2764         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2765                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2766         param.use_chanctx = data->use_chanctx;
2767         param.regd = data->regd;
2768         param.channels = data->channels;
2769         param.hwname = wiphy_name(data->hw->wiphy);
2770
2771         res = append_radio_msg(skb, data->idx, &param);
2772         if (res < 0)
2773                 goto out_err;
2774
2775         genlmsg_end(skb, hdr);
2776         return 0;
2777
2778 out_err:
2779         genlmsg_cancel(skb, hdr);
2780         return res;
2781 }
2782
2783 static void mac80211_hwsim_free(void)
2784 {
2785         struct mac80211_hwsim_data *data;
2786
2787         spin_lock_bh(&hwsim_radio_lock);
2788         while ((data = list_first_entry_or_null(&hwsim_radios,
2789                                                 struct mac80211_hwsim_data,
2790                                                 list))) {
2791                 list_del(&data->list);
2792                 spin_unlock_bh(&hwsim_radio_lock);
2793                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2794                                          NULL);
2795                 spin_lock_bh(&hwsim_radio_lock);
2796         }
2797         spin_unlock_bh(&hwsim_radio_lock);
2798         class_destroy(hwsim_class);
2799 }
2800
2801 static const struct net_device_ops hwsim_netdev_ops = {
2802         .ndo_start_xmit         = hwsim_mon_xmit,
2803         .ndo_set_mac_address    = eth_mac_addr,
2804         .ndo_validate_addr      = eth_validate_addr,
2805 };
2806
2807 static void hwsim_mon_setup(struct net_device *dev)
2808 {
2809         dev->netdev_ops = &hwsim_netdev_ops;
2810         dev->destructor = free_netdev;
2811         ether_setup(dev);
2812         dev->priv_flags |= IFF_NO_QUEUE;
2813         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2814         eth_zero_addr(dev->dev_addr);
2815         dev->dev_addr[0] = 0x12;
2816 }
2817
2818 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2819 {
2820         struct mac80211_hwsim_data *data;
2821         bool _found = false;
2822
2823         spin_lock_bh(&hwsim_radio_lock);
2824         list_for_each_entry(data, &hwsim_radios, list) {
2825                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2826                         _found = true;
2827                         break;
2828                 }
2829         }
2830         spin_unlock_bh(&hwsim_radio_lock);
2831
2832         if (!_found)
2833                 return NULL;
2834
2835         return data;
2836 }
2837
2838 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2839 {
2840         struct mac80211_hwsim_data *data;
2841
2842         hwsim_net_set_wmediumd(net, portid);
2843
2844         spin_lock_bh(&hwsim_radio_lock);
2845         list_for_each_entry(data, &hwsim_radios, list) {
2846                 if (data->netgroup == hwsim_net_get_netgroup(net))
2847                         data->wmediumd = portid;
2848         }
2849         spin_unlock_bh(&hwsim_radio_lock);
2850 }
2851
2852 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2853                                            struct genl_info *info)
2854 {
2855
2856         struct ieee80211_hdr *hdr;
2857         struct mac80211_hwsim_data *data2;
2858         struct ieee80211_tx_info *txi;
2859         struct hwsim_tx_rate *tx_attempts;
2860         u64 ret_skb_cookie;
2861         struct sk_buff *skb, *tmp;
2862         const u8 *src;
2863         unsigned int hwsim_flags;
2864         int i;
2865         bool found = false;
2866
2867         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2868             !info->attrs[HWSIM_ATTR_FLAGS] ||
2869             !info->attrs[HWSIM_ATTR_COOKIE] ||
2870             !info->attrs[HWSIM_ATTR_SIGNAL] ||
2871             !info->attrs[HWSIM_ATTR_TX_INFO])
2872                 goto out;
2873
2874         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2875         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2876         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2877
2878         data2 = get_hwsim_data_ref_from_addr(src);
2879         if (!data2)
2880                 goto out;
2881
2882         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2883                 goto out;
2884
2885         if (info->snd_portid != data2->wmediumd)
2886                 goto out;
2887
2888         /* look for the skb matching the cookie passed back from user */
2889         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2890                 u64 skb_cookie;
2891
2892                 txi = IEEE80211_SKB_CB(skb);
2893                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2894
2895                 if (skb_cookie == ret_skb_cookie) {
2896                         skb_unlink(skb, &data2->pending);
2897                         found = true;
2898                         break;
2899                 }
2900         }
2901
2902         /* not found */
2903         if (!found)
2904                 goto out;
2905
2906         /* Tx info received because the frame was broadcasted on user space,
2907          so we get all the necessary info: tx attempts and skb control buff */
2908
2909         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2910                        info->attrs[HWSIM_ATTR_TX_INFO]);
2911
2912         /* now send back TX status */
2913         txi = IEEE80211_SKB_CB(skb);
2914
2915         ieee80211_tx_info_clear_status(txi);
2916
2917         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2918                 txi->status.rates[i].idx = tx_attempts[i].idx;
2919                 txi->status.rates[i].count = tx_attempts[i].count;
2920                 /*txi->status.rates[i].flags = 0;*/
2921         }
2922
2923         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2924
2925         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2926            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2927                 if (skb->len >= 16) {
2928                         hdr = (struct ieee80211_hdr *) skb->data;
2929                         mac80211_hwsim_monitor_ack(data2->channel,
2930                                                    hdr->addr2);
2931                 }
2932                 txi->flags |= IEEE80211_TX_STAT_ACK;
2933         }
2934         ieee80211_tx_status_irqsafe(data2->hw, skb);
2935         return 0;
2936 out:
2937         return -EINVAL;
2938
2939 }
2940
2941 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2942                                           struct genl_info *info)
2943 {
2944         struct mac80211_hwsim_data *data2;
2945         struct ieee80211_rx_status rx_status;
2946         const u8 *dst;
2947         int frame_data_len;
2948         void *frame_data;
2949         struct sk_buff *skb = NULL;
2950
2951         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2952             !info->attrs[HWSIM_ATTR_FRAME] ||
2953             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2954             !info->attrs[HWSIM_ATTR_SIGNAL])
2955                 goto out;
2956
2957         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2958         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2959         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2960
2961         /* Allocate new skb here */
2962         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2963         if (skb == NULL)
2964                 goto err;
2965
2966         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2967                 goto err;
2968
2969         /* Copy the data */
2970         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2971
2972         data2 = get_hwsim_data_ref_from_addr(dst);
2973         if (!data2)
2974                 goto out;
2975
2976         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2977                 goto out;
2978
2979         if (info->snd_portid != data2->wmediumd)
2980                 goto out;
2981
2982         /* check if radio is configured properly */
2983
2984         if (data2->idle || !data2->started)
2985                 goto out;
2986
2987         /* A frame is received from user space */
2988         memset(&rx_status, 0, sizeof(rx_status));
2989         if (info->attrs[HWSIM_ATTR_FREQ]) {
2990                 /* throw away off-channel packets, but allow both the temporary
2991                  * ("hw" scan/remain-on-channel) and regular channel, since the
2992                  * internal datapath also allows this
2993                  */
2994                 mutex_lock(&data2->mutex);
2995                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2996
2997                 if (rx_status.freq != data2->channel->center_freq &&
2998                     (!data2->tmp_chan ||
2999                      rx_status.freq != data2->tmp_chan->center_freq)) {
3000                         mutex_unlock(&data2->mutex);
3001                         goto out;
3002                 }
3003                 mutex_unlock(&data2->mutex);
3004         } else {
3005                 rx_status.freq = data2->channel->center_freq;
3006         }
3007
3008         rx_status.band = data2->channel->band;
3009         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3010         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3011
3012         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3013         data2->rx_pkts++;
3014         data2->rx_bytes += skb->len;
3015         ieee80211_rx_irqsafe(data2->hw, skb);
3016
3017         return 0;
3018 err:
3019         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3020 out:
3021         dev_kfree_skb(skb);
3022         return -EINVAL;
3023 }
3024
3025 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3026                                       struct genl_info *info)
3027 {
3028         struct net *net = genl_info_net(info);
3029         struct mac80211_hwsim_data *data;
3030         int chans = 1;
3031
3032         spin_lock_bh(&hwsim_radio_lock);
3033         list_for_each_entry(data, &hwsim_radios, list)
3034                 chans = max(chans, data->channels);
3035         spin_unlock_bh(&hwsim_radio_lock);
3036
3037         /* In the future we should revise the userspace API and allow it
3038          * to set a flag that it does support multi-channel, then we can
3039          * let this pass conditionally on the flag.
3040          * For current userspace, prohibit it since it won't work right.
3041          */
3042         if (chans > 1)
3043                 return -EOPNOTSUPP;
3044
3045         if (hwsim_net_get_wmediumd(net))
3046                 return -EBUSY;
3047
3048         hwsim_register_wmediumd(net, info->snd_portid);
3049
3050         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3051                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3052
3053         return 0;
3054 }
3055
3056 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3057 {
3058         struct hwsim_new_radio_params param = { 0 };
3059
3060         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3061         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3062         param.channels = channels;
3063         param.destroy_on_close =
3064                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3065
3066         if (info->attrs[HWSIM_ATTR_CHANNELS])
3067                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3068
3069         if (info->attrs[HWSIM_ATTR_NO_VIF])
3070                 param.no_vif = true;
3071
3072         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3073                 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3074
3075         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3076                 param.use_chanctx = true;
3077         else
3078                 param.use_chanctx = (param.channels > 1);
3079
3080         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3081                 param.reg_alpha2 =
3082                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3083
3084         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3085                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3086
3087                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3088                         return -EINVAL;
3089                 param.regd = hwsim_world_regdom_custom[idx];
3090         }
3091
3092         return mac80211_hwsim_new_radio(info, &param);
3093 }
3094
3095 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3096 {
3097         struct mac80211_hwsim_data *data;
3098         s64 idx = -1;
3099         const char *hwname = NULL;
3100
3101         if (info->attrs[HWSIM_ATTR_RADIO_ID])
3102                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3103         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3104                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3105         else
3106                 return -EINVAL;
3107
3108         spin_lock_bh(&hwsim_radio_lock);
3109         list_for_each_entry(data, &hwsim_radios, list) {
3110                 if (idx >= 0) {
3111                         if (data->idx != idx)
3112                                 continue;
3113                 } else {
3114                         if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3115                                 continue;
3116                 }
3117
3118                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3119                         continue;
3120
3121                 list_del(&data->list);
3122                 spin_unlock_bh(&hwsim_radio_lock);
3123                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3124                                          info);
3125                 return 0;
3126         }
3127         spin_unlock_bh(&hwsim_radio_lock);
3128
3129         return -ENODEV;
3130 }
3131
3132 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3133 {
3134         struct mac80211_hwsim_data *data;
3135         struct sk_buff *skb;
3136         int idx, res = -ENODEV;
3137
3138         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3139                 return -EINVAL;
3140         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3141
3142         spin_lock_bh(&hwsim_radio_lock);
3143         list_for_each_entry(data, &hwsim_radios, list) {
3144                 if (data->idx != idx)
3145                         continue;
3146
3147                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3148                         continue;
3149
3150                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3151                 if (!skb) {
3152                         res = -ENOMEM;
3153                         goto out_err;
3154                 }
3155
3156                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3157                                                info->snd_seq, NULL, 0);
3158                 if (res < 0) {
3159                         nlmsg_free(skb);
3160                         goto out_err;
3161                 }
3162
3163                 genlmsg_reply(skb, info);
3164                 break;
3165         }
3166
3167 out_err:
3168         spin_unlock_bh(&hwsim_radio_lock);
3169
3170         return res;
3171 }
3172
3173 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3174                                struct netlink_callback *cb)
3175 {
3176         int idx = cb->args[0];
3177         struct mac80211_hwsim_data *data = NULL;
3178         int res;
3179
3180         spin_lock_bh(&hwsim_radio_lock);
3181
3182         if (idx == hwsim_radio_idx)
3183                 goto done;
3184
3185         list_for_each_entry(data, &hwsim_radios, list) {
3186                 if (data->idx < idx)
3187                         continue;
3188
3189                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3190                         continue;
3191
3192                 res = mac80211_hwsim_get_radio(skb, data,
3193                                                NETLINK_CB(cb->skb).portid,
3194                                                cb->nlh->nlmsg_seq, cb,
3195                                                NLM_F_MULTI);
3196                 if (res < 0)
3197                         break;
3198
3199                 idx = data->idx + 1;
3200         }
3201
3202         cb->args[0] = idx;
3203
3204 done:
3205         spin_unlock_bh(&hwsim_radio_lock);
3206         return skb->len;
3207 }
3208
3209 /* Generic Netlink operations array */
3210 static const struct genl_ops hwsim_ops[] = {
3211         {
3212                 .cmd = HWSIM_CMD_REGISTER,
3213                 .policy = hwsim_genl_policy,
3214                 .doit = hwsim_register_received_nl,
3215                 .flags = GENL_UNS_ADMIN_PERM,
3216         },
3217         {
3218                 .cmd = HWSIM_CMD_FRAME,
3219                 .policy = hwsim_genl_policy,
3220                 .doit = hwsim_cloned_frame_received_nl,
3221         },
3222         {
3223                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3224                 .policy = hwsim_genl_policy,
3225                 .doit = hwsim_tx_info_frame_received_nl,
3226         },
3227         {
3228                 .cmd = HWSIM_CMD_NEW_RADIO,
3229                 .policy = hwsim_genl_policy,
3230                 .doit = hwsim_new_radio_nl,
3231                 .flags = GENL_UNS_ADMIN_PERM,
3232         },
3233         {
3234                 .cmd = HWSIM_CMD_DEL_RADIO,
3235                 .policy = hwsim_genl_policy,
3236                 .doit = hwsim_del_radio_nl,
3237                 .flags = GENL_UNS_ADMIN_PERM,
3238         },
3239         {
3240                 .cmd = HWSIM_CMD_GET_RADIO,
3241                 .policy = hwsim_genl_policy,
3242                 .doit = hwsim_get_radio_nl,
3243                 .dumpit = hwsim_dump_radio_nl,
3244         },
3245 };
3246
3247 static struct genl_family hwsim_genl_family __ro_after_init = {
3248         .name = "MAC80211_HWSIM",
3249         .version = 1,
3250         .maxattr = HWSIM_ATTR_MAX,
3251         .netnsok = true,
3252         .module = THIS_MODULE,
3253         .ops = hwsim_ops,
3254         .n_ops = ARRAY_SIZE(hwsim_ops),
3255         .mcgrps = hwsim_mcgrps,
3256         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3257 };
3258
3259 static void destroy_radio(struct work_struct *work)
3260 {
3261         struct mac80211_hwsim_data *data =
3262                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3263
3264         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3265 }
3266
3267 static void remove_user_radios(u32 portid)
3268 {
3269         struct mac80211_hwsim_data *entry, *tmp;
3270
3271         spin_lock_bh(&hwsim_radio_lock);
3272         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3273                 if (entry->destroy_on_close && entry->portid == portid) {
3274                         list_del(&entry->list);
3275                         INIT_WORK(&entry->destroy_work, destroy_radio);
3276                         schedule_work(&entry->destroy_work);
3277                 }
3278         }
3279         spin_unlock_bh(&hwsim_radio_lock);
3280 }
3281
3282 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3283                                          unsigned long state,
3284                                          void *_notify)
3285 {
3286         struct netlink_notify *notify = _notify;
3287
3288         if (state != NETLINK_URELEASE)
3289                 return NOTIFY_DONE;
3290
3291         remove_user_radios(notify->portid);
3292
3293         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3294                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3295                        " socket, switching to perfect channel medium\n");
3296                 hwsim_register_wmediumd(notify->net, 0);
3297         }
3298         return NOTIFY_DONE;
3299
3300 }
3301
3302 static struct notifier_block hwsim_netlink_notifier = {
3303         .notifier_call = mac80211_hwsim_netlink_notify,
3304 };
3305
3306 static int __init hwsim_init_netlink(void)
3307 {
3308         int rc;
3309
3310         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3311
3312         rc = genl_register_family(&hwsim_genl_family);
3313         if (rc)
3314                 goto failure;
3315
3316         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3317         if (rc) {
3318                 genl_unregister_family(&hwsim_genl_family);
3319                 goto failure;
3320         }
3321
3322         return 0;
3323
3324 failure:
3325         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3326         return -EINVAL;
3327 }
3328
3329 static __net_init int hwsim_init_net(struct net *net)
3330 {
3331         hwsim_net_set_netgroup(net);
3332
3333         return 0;
3334 }
3335
3336 static void __net_exit hwsim_exit_net(struct net *net)
3337 {
3338         struct mac80211_hwsim_data *data, *tmp;
3339
3340         spin_lock_bh(&hwsim_radio_lock);
3341         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3342                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3343                         continue;
3344
3345                 /* Radios created in init_net are returned to init_net. */
3346                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3347                         continue;
3348
3349                 list_del(&data->list);
3350                 INIT_WORK(&data->destroy_work, destroy_radio);
3351                 schedule_work(&data->destroy_work);
3352         }
3353         spin_unlock_bh(&hwsim_radio_lock);
3354 }
3355
3356 static struct pernet_operations hwsim_net_ops = {
3357         .init = hwsim_init_net,
3358         .exit = hwsim_exit_net,
3359         .id   = &hwsim_net_id,
3360         .size = sizeof(struct hwsim_net),
3361 };
3362
3363 static void hwsim_exit_netlink(void)
3364 {
3365         /* unregister the notifier */
3366         netlink_unregister_notifier(&hwsim_netlink_notifier);
3367         /* unregister the family */
3368         genl_unregister_family(&hwsim_genl_family);
3369 }
3370
3371 static int __init init_mac80211_hwsim(void)
3372 {
3373         int i, err;
3374
3375         if (radios < 0 || radios > 100)
3376                 return -EINVAL;
3377
3378         if (channels < 1)
3379                 return -EINVAL;
3380
3381         spin_lock_init(&hwsim_radio_lock);
3382
3383         err = register_pernet_device(&hwsim_net_ops);
3384         if (err)
3385                 return err;
3386
3387         err = platform_driver_register(&mac80211_hwsim_driver);
3388         if (err)
3389                 goto out_unregister_pernet;
3390
3391         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3392         if (IS_ERR(hwsim_class)) {
3393                 err = PTR_ERR(hwsim_class);
3394                 goto out_unregister_driver;
3395         }
3396
3397         err = hwsim_init_netlink();
3398         if (err < 0)
3399                 goto out_unregister_driver;
3400
3401         for (i = 0; i < radios; i++) {
3402                 struct hwsim_new_radio_params param = { 0 };
3403
3404                 param.channels = channels;
3405
3406                 switch (regtest) {
3407                 case HWSIM_REGTEST_DIFF_COUNTRY:
3408                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3409                                 param.reg_alpha2 = hwsim_alpha2s[i];
3410                         break;
3411                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3412                         if (!i)
3413                                 param.reg_alpha2 = hwsim_alpha2s[0];
3414                         break;
3415                 case HWSIM_REGTEST_STRICT_ALL:
3416                         param.reg_strict = true;
3417                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3418                         param.reg_alpha2 = hwsim_alpha2s[0];
3419                         break;
3420                 case HWSIM_REGTEST_WORLD_ROAM:
3421                         if (i == 0)
3422                                 param.regd = &hwsim_world_regdom_custom_01;
3423                         break;
3424                 case HWSIM_REGTEST_CUSTOM_WORLD:
3425                         param.regd = &hwsim_world_regdom_custom_01;
3426                         break;
3427                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3428                         if (i == 0)
3429                                 param.regd = &hwsim_world_regdom_custom_01;
3430                         else if (i == 1)
3431                                 param.regd = &hwsim_world_regdom_custom_02;
3432                         break;
3433                 case HWSIM_REGTEST_STRICT_FOLLOW:
3434                         if (i == 0) {
3435                                 param.reg_strict = true;
3436                                 param.reg_alpha2 = hwsim_alpha2s[0];
3437                         }
3438                         break;
3439                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3440                         if (i == 0) {
3441                                 param.reg_strict = true;
3442                                 param.reg_alpha2 = hwsim_alpha2s[0];
3443                         } else if (i == 1) {
3444                                 param.reg_alpha2 = hwsim_alpha2s[1];
3445                         }
3446                         break;
3447                 case HWSIM_REGTEST_ALL:
3448                         switch (i) {
3449                         case 0:
3450                                 param.regd = &hwsim_world_regdom_custom_01;
3451                                 break;
3452                         case 1:
3453                                 param.regd = &hwsim_world_regdom_custom_02;
3454                                 break;
3455                         case 2:
3456                                 param.reg_alpha2 = hwsim_alpha2s[0];
3457                                 break;
3458                         case 3:
3459                                 param.reg_alpha2 = hwsim_alpha2s[1];
3460                                 break;
3461                         case 4:
3462                                 param.reg_strict = true;
3463                                 param.reg_alpha2 = hwsim_alpha2s[2];
3464                                 break;
3465                         }
3466                         break;
3467                 default:
3468                         break;
3469                 }
3470
3471                 param.p2p_device = support_p2p_device;
3472                 param.use_chanctx = channels > 1;
3473
3474                 err = mac80211_hwsim_new_radio(NULL, &param);
3475                 if (err < 0)
3476                         goto out_free_radios;
3477         }
3478
3479         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3480                                  hwsim_mon_setup);
3481         if (hwsim_mon == NULL) {
3482                 err = -ENOMEM;
3483                 goto out_free_radios;
3484         }
3485
3486         rtnl_lock();
3487         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3488         if (err < 0) {
3489                 rtnl_unlock();
3490                 goto out_free_radios;
3491         }
3492
3493         err = register_netdevice(hwsim_mon);
3494         if (err < 0) {
3495                 rtnl_unlock();
3496                 goto out_free_mon;
3497         }
3498         rtnl_unlock();
3499
3500         return 0;
3501
3502 out_free_mon:
3503         free_netdev(hwsim_mon);
3504 out_free_radios:
3505         mac80211_hwsim_free();
3506 out_unregister_driver:
3507         platform_driver_unregister(&mac80211_hwsim_driver);
3508 out_unregister_pernet:
3509         unregister_pernet_device(&hwsim_net_ops);
3510         return err;
3511 }
3512 module_init(init_mac80211_hwsim);
3513
3514 static void __exit exit_mac80211_hwsim(void)
3515 {
3516         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3517
3518         hwsim_exit_netlink();
3519
3520         mac80211_hwsim_free();
3521         unregister_netdev(hwsim_mon);
3522         platform_driver_unregister(&mac80211_hwsim_driver);
3523         unregister_pernet_device(&hwsim_net_ops);
3524 }
3525 module_exit(exit_mac80211_hwsim);