drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include <net/net_namespace.h>
  34 #include <net/netns/generic.h>
  35 #include "mac80211_hwsim.h"
  36
  37 #define WARN_QUEUE 100
  38 #define MAX_QUEUE 200
  39
  40 MODULE_AUTHOR("Jouni Malinen");
  41 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  42 MODULE_LICENSE("GPL");
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 static bool support_p2p_device = true;
  61 module_param(support_p2p_device, bool, 0444);
  62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  63
  64 /**
  65  * enum hwsim_regtest - the type of regulatory tests we offer
  66  *
  67  * These are the different values you can use for the regtest
  68  * module parameter. This is useful to help test world roaming
  69  * and the driver regulatory_hint() call and combinations of these.
  70  * If you want to do specific alpha2 regulatory domain tests simply
  71  * use the userspace regulatory request as that will be respected as
  72  * well without the need of this module parameter. This is designed
  73  * only for testing the driver regulatory request, world roaming
  74  * and all possible combinations.
  75  *
  76  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  77  *      this is the default value.
  78  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  79  *      hint, only one driver regulatory hint will be sent as such the
  80  *      secondary radios are expected to follow.
  81  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  82  *      request with all radios reporting the same regulatory domain.
  83  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  84  *      different regulatory domains requests. Expected behaviour is for
  85  *      an intersection to occur but each device will still use their
  86  *      respective regulatory requested domains. Subsequent radios will
  87  *      use the resulting intersection.
  88  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  89  *      this by using a custom beacon-capable regulatory domain for the first
  90  *      radio. All other device world roam.
  91  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  92  *      domain requests. All radios will adhere to this custom world regulatory
  93  *      domain.
  94  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  95  *      domain requests. The first radio will adhere to the first custom world
  96  *      regulatory domain, the second one to the second custom world regulatory
  97  *      domain. All other devices will world roam.
  98  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  99  *      settings, only the first radio will send a regulatory domain request
 100  *      and use strict settings. The rest of the radios are expected to follow.
 101  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 102  *      settings. All radios will adhere to this.
 103  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 104  *      domain settings, combined with secondary driver regulatory domain
 105  *      settings. The first radio will get a strict regulatory domain setting
 106  *      using the first driver regulatory request and the second radio will use
 107  *      non-strict settings using the second driver regulatory request. All
 108  *      other devices should follow the intersection created between the
 109  *      first two.
 110  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 111  *      at least 6 radios for a complete test. We will test in this order:
 112  *      1 - driver custom world regulatory domain
 113  *      2 - second custom world regulatory domain
 114  *      3 - first driver regulatory domain request
 115  *      4 - second driver regulatory domain request
 116  *      5 - strict regulatory domain settings using the third driver regulatory
 117  *          domain request
 118  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 119  *                 regulatory requests.
 120  */
 121 enum hwsim_regtest {
 122         HWSIM_REGTEST_DISABLED = 0,
 123         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 124         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 125         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 126         HWSIM_REGTEST_WORLD_ROAM = 4,
 127         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 128         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 129         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 130         HWSIM_REGTEST_STRICT_ALL = 8,
 131         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 132         HWSIM_REGTEST_ALL = 10,
 133 };
 134
 135 /* Set to one of the HWSIM_REGTEST_* values above */
 136 static int regtest = HWSIM_REGTEST_DISABLED;
 137 module_param(regtest, int, 0444);
 138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 139
 140 static const char *hwsim_alpha2s[] = {
 141         "FI",
 142         "AL",
 143         "US",
 144         "DE",
 145         "JP",
 146         "AL",
 147 };
 148
 149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 150         .n_reg_rules = 4,
 151         .alpha2 =  "99",
 152         .reg_rules = {
 153                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 154                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 155                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 156                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 157         }
 158 };
 159
 160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 161         .n_reg_rules = 2,
 162         .alpha2 =  "99",
 163         .reg_rules = {
 164                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 165                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 166                          NL80211_RRF_NO_IR),
 167         }
 168 };
 169
 170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 171         &hwsim_world_regdom_custom_01,
 172         &hwsim_world_regdom_custom_02,
 173 };
 174
 175 struct hwsim_vif_priv {
 176         u32 magic;
 177         u8 bssid[ETH_ALEN];
 178         bool assoc;
 179         bool bcn_en;
 180         u16 aid;
 181 };
 182
 183 #define HWSIM_VIF_MAGIC 0x69537748
 184
 185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 186 {
 187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 188         WARN(vp->magic != HWSIM_VIF_MAGIC,
 189              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 190              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 191 }
 192
 193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 194 {
 195         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 196         vp->magic = HWSIM_VIF_MAGIC;
 197 }
 198
 199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = 0;
 203 }
 204
 205 struct hwsim_sta_priv {
 206         u32 magic;
 207 };
 208
 209 #define HWSIM_STA_MAGIC 0x6d537749
 210
 211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 212 {
 213         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 214         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 215 }
 216
 217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         sp->magic = HWSIM_STA_MAGIC;
 221 }
 222
 223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = 0;
 227 }
 228
 229 struct hwsim_chanctx_priv {
 230         u32 magic;
 231 };
 232
 233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 234
 235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 236 {
 237         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 238         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 239 }
 240
 241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         cp->magic = HWSIM_CHANCTX_MAGIC;
 245 }
 246
 247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = 0;
 251 }
 252
 253 static int hwsim_net_id;
 254
 255 static int hwsim_netgroup;
 256
 257 struct hwsim_net {
 258         int netgroup;
 259         u32 wmediumd;
 260 };
 261
 262 static inline int hwsim_net_get_netgroup(struct net *net)
 263 {
 264         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 265
 266         return hwsim_net->netgroup;
 267 }
 268
 269 static inline void hwsim_net_set_netgroup(struct net *net)
 270 {
 271         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 272
 273         hwsim_net->netgroup = hwsim_netgroup++;
 274 }
 275
 276 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 277 {
 278         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 279
 280         return hwsim_net->wmediumd;
 281 }
 282
 283 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 284 {
 285         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 286
 287         hwsim_net->wmediumd = portid;
 288 }
 289
 290 static struct class *hwsim_class;
 291
 292 static struct net_device *hwsim_mon; /* global monitor netdev */
 293
 294 #define CHAN2G(_freq)  { \
 295         .band = NL80211_BAND_2GHZ, \
 296         .center_freq = (_freq), \
 297         .hw_value = (_freq), \
 298         .max_power = 20, \
 299 }
 300
 301 #define CHAN5G(_freq) { \
 302         .band = NL80211_BAND_5GHZ, \
 303         .center_freq = (_freq), \
 304         .hw_value = (_freq), \
 305         .max_power = 20, \
 306 }
 307
 308 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 309         CHAN2G(2412), /* Channel 1 */
 310         CHAN2G(2417), /* Channel 2 */
 311         CHAN2G(2422), /* Channel 3 */
 312         CHAN2G(2427), /* Channel 4 */
 313         CHAN2G(2432), /* Channel 5 */
 314         CHAN2G(2437), /* Channel 6 */
 315         CHAN2G(2442), /* Channel 7 */
 316         CHAN2G(2447), /* Channel 8 */
 317         CHAN2G(2452), /* Channel 9 */
 318         CHAN2G(2457), /* Channel 10 */
 319         CHAN2G(2462), /* Channel 11 */
 320         CHAN2G(2467), /* Channel 12 */
 321         CHAN2G(2472), /* Channel 13 */
 322         CHAN2G(2484), /* Channel 14 */
 323 };
 324
 325 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 326         CHAN5G(5180), /* Channel 36 */
 327         CHAN5G(5200), /* Channel 40 */
 328         CHAN5G(5220), /* Channel 44 */
 329         CHAN5G(5240), /* Channel 48 */
 330
 331         CHAN5G(5260), /* Channel 52 */
 332         CHAN5G(5280), /* Channel 56 */
 333         CHAN5G(5300), /* Channel 60 */
 334         CHAN5G(5320), /* Channel 64 */
 335
 336         CHAN5G(5500), /* Channel 100 */
 337         CHAN5G(5520), /* Channel 104 */
 338         CHAN5G(5540), /* Channel 108 */
 339         CHAN5G(5560), /* Channel 112 */
 340         CHAN5G(5580), /* Channel 116 */
 341         CHAN5G(5600), /* Channel 120 */
 342         CHAN5G(5620), /* Channel 124 */
 343         CHAN5G(5640), /* Channel 128 */
 344         CHAN5G(5660), /* Channel 132 */
 345         CHAN5G(5680), /* Channel 136 */
 346         CHAN5G(5700), /* Channel 140 */
 347
 348         CHAN5G(5745), /* Channel 149 */
 349         CHAN5G(5765), /* Channel 153 */
 350         CHAN5G(5785), /* Channel 157 */
 351         CHAN5G(5805), /* Channel 161 */
 352         CHAN5G(5825), /* Channel 165 */
 353 };
 354
 355 static const struct ieee80211_rate hwsim_rates[] = {
 356         { .bitrate = 10 },
 357         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 358         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 359         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 360         { .bitrate = 60 },
 361         { .bitrate = 90 },
 362         { .bitrate = 120 },
 363         { .bitrate = 180 },
 364         { .bitrate = 240 },
 365         { .bitrate = 360 },
 366         { .bitrate = 480 },
 367         { .bitrate = 540 }
 368 };
 369
 370 #define OUI_QCA 0x001374
 371 #define QCA_NL80211_SUBCMD_TEST 1
 372 enum qca_nl80211_vendor_subcmds {
 373         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 374         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 375 };
 376
 377 static const struct nla_policy
 378 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 379         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 380 };
 381
 382 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 383                                           struct wireless_dev *wdev,
 384                                           const void *data, int data_len)
 385 {
 386         struct sk_buff *skb;
 387         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 388         int err;
 389         u32 val;
 390
 391         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
 392                         hwsim_vendor_test_policy);
 393         if (err)
 394                 return err;
 395         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 396                 return -EINVAL;
 397         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 398         wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
 399
 400         /* Send a vendor event as a test. Note that this would not normally be
 401          * done within a command handler, but rather, based on some other
 402          * trigger. For simplicity, this command is used to trigger the event
 403          * here.
 404          *
 405          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 406          */
 407         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 408         if (skb) {
 409                 /* skb_put() or nla_put() will fill up data within
 410                  * NL80211_ATTR_VENDOR_DATA.
 411                  */
 412
 413                 /* Add vendor data */
 414                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 415
 416                 /* Send the event - this will call nla_nest_end() */
 417                 cfg80211_vendor_event(skb, GFP_KERNEL);
 418         }
 419
 420         /* Send a response to the command */
 421         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 422         if (!skb)
 423                 return -ENOMEM;
 424
 425         /* skb_put() or nla_put() will fill up data within
 426          * NL80211_ATTR_VENDOR_DATA
 427          */
 428         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 429
 430         return cfg80211_vendor_cmd_reply(skb);
 431 }
 432
 433 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 434         {
 435                 .info = { .vendor_id = OUI_QCA,
 436                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 437                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 438                 .doit = mac80211_hwsim_vendor_cmd_test,
 439         }
 440 };
 441
 442 /* Advertise support vendor specific events */
 443 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 444         { .vendor_id = OUI_QCA, .subcmd = 1 },
 445 };
 446
 447 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 448         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 449         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 450                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 451 #ifdef CONFIG_MAC80211_MESH
 452                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 453 #endif
 454                                  BIT(NL80211_IFTYPE_AP) |
 455                                  BIT(NL80211_IFTYPE_P2P_GO) },
 456         /* must be last, see hwsim_if_comb */
 457         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 458 };
 459
 460 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 461         {
 462                 .limits = hwsim_if_limits,
 463                 /* remove the last entry which is P2P_DEVICE */
 464                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 465                 .max_interfaces = 2048,
 466                 .num_different_channels = 1,
 467                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 468                                        BIT(NL80211_CHAN_WIDTH_20) |
 469                                        BIT(NL80211_CHAN_WIDTH_40) |
 470                                        BIT(NL80211_CHAN_WIDTH_80) |
 471                                        BIT(NL80211_CHAN_WIDTH_160),
 472         },
 473 };
 474
 475 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 476         {
 477                 .limits = hwsim_if_limits,
 478                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 479                 .max_interfaces = 2048,
 480                 .num_different_channels = 1,
 481                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 482                                        BIT(NL80211_CHAN_WIDTH_20) |
 483                                        BIT(NL80211_CHAN_WIDTH_40) |
 484                                        BIT(NL80211_CHAN_WIDTH_80) |
 485                                        BIT(NL80211_CHAN_WIDTH_160),
 486         },
 487 };
 488
 489 static spinlock_t hwsim_radio_lock;
 490 static struct 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 netlinf family */
 591 static struct genl_family hwsim_genl_family = {
 592         .id = GENL_ID_GENERATE,
 593         .hdrsize = 0,
 594         .name = "MAC80211_HWSIM",
 595         .version = 1,
 596         .maxattr = HWSIM_ATTR_MAX,
 597         .netnsok = true,
 598 };
 599
 600 enum hwsim_multicast_groups {
 601         HWSIM_MCGRP_CONFIG,
 602 };
 603
 604 static const struct genl_multicast_group hwsim_mcgrps[] = {
 605         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 606 };
 607
 608 /* MAC80211_HWSIM netlink policy */
 609
 610 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 611         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 612         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 613         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 614                                .len = IEEE80211_MAX_DATA_LEN },
 615         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 616         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 617         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 618         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 619                                  .len = IEEE80211_TX_MAX_RATES *
 620                                         sizeof(struct hwsim_tx_rate)},
 621         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 622         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 623         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 624         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 625         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 626         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 627         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 628         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 629         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 630         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 631         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 632 };
 633
 634 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 635                                     struct sk_buff *skb,
 636                                     struct ieee80211_channel *chan);
 637
 638 /* sysfs attributes */
 639 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 640 {
 641         struct mac80211_hwsim_data *data = dat;
 642         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 643         struct sk_buff *skb;
 644         struct ieee80211_pspoll *pspoll;
 645
 646         if (!vp->assoc)
 647                 return;
 648
 649         wiphy_debug(data->hw->wiphy,
 650                     "%s: send PS-Poll to %pM for aid %d\n",
 651                     __func__, vp->bssid, vp->aid);
 652
 653         skb = dev_alloc_skb(sizeof(*pspoll));
 654         if (!skb)
 655                 return;
 656         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 657         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 658                                             IEEE80211_STYPE_PSPOLL |
 659                                             IEEE80211_FCTL_PM);
 660         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 661         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 662         memcpy(pspoll->ta, mac, ETH_ALEN);
 663
 664         rcu_read_lock();
 665         mac80211_hwsim_tx_frame(data->hw, skb,
 666                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 667         rcu_read_unlock();
 668 }
 669
 670 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 671                                 struct ieee80211_vif *vif, int ps)
 672 {
 673         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 674         struct sk_buff *skb;
 675         struct ieee80211_hdr *hdr;
 676
 677         if (!vp->assoc)
 678                 return;
 679
 680         wiphy_debug(data->hw->wiphy,
 681                     "%s: send data::nullfunc to %pM ps=%d\n",
 682                     __func__, vp->bssid, ps);
 683
 684         skb = dev_alloc_skb(sizeof(*hdr));
 685         if (!skb)
 686                 return;
 687         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 688         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 689                                          IEEE80211_STYPE_NULLFUNC |
 690                                          (ps ? IEEE80211_FCTL_PM : 0));
 691         hdr->duration_id = cpu_to_le16(0);
 692         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 693         memcpy(hdr->addr2, mac, ETH_ALEN);
 694         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 695
 696         rcu_read_lock();
 697         mac80211_hwsim_tx_frame(data->hw, skb,
 698                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 699         rcu_read_unlock();
 700 }
 701
 702
 703 static void hwsim_send_nullfunc_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, 1);
 708 }
 709
 710 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 711                                       struct ieee80211_vif *vif)
 712 {
 713         struct mac80211_hwsim_data *data = dat;
 714         hwsim_send_nullfunc(data, mac, vif, 0);
 715 }
 716
 717 static int hwsim_fops_ps_read(void *dat, u64 *val)
 718 {
 719         struct mac80211_hwsim_data *data = dat;
 720         *val = data->ps;
 721         return 0;
 722 }
 723
 724 static int hwsim_fops_ps_write(void *dat, u64 val)
 725 {
 726         struct mac80211_hwsim_data *data = dat;
 727         enum ps_mode old_ps;
 728
 729         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 730             val != PS_MANUAL_POLL)
 731                 return -EINVAL;
 732
 733         old_ps = data->ps;
 734         data->ps = val;
 735
 736         local_bh_disable();
 737         if (val == PS_MANUAL_POLL) {
 738                 ieee80211_iterate_active_interfaces_atomic(
 739                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 740                         hwsim_send_ps_poll, data);
 741                 data->ps_poll_pending = true;
 742         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 743                 ieee80211_iterate_active_interfaces_atomic(
 744                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 745                         hwsim_send_nullfunc_ps, data);
 746         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 747                 ieee80211_iterate_active_interfaces_atomic(
 748                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 749                         hwsim_send_nullfunc_no_ps, data);
 750         }
 751         local_bh_enable();
 752
 753         return 0;
 754 }
 755
 756 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 757                         "%llu\n");
 758
 759 static int hwsim_write_simulate_radar(void *dat, u64 val)
 760 {
 761         struct mac80211_hwsim_data *data = dat;
 762
 763         ieee80211_radar_detected(data->hw);
 764
 765         return 0;
 766 }
 767
 768 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 769                         hwsim_write_simulate_radar, "%llu\n");
 770
 771 static int hwsim_fops_group_read(void *dat, u64 *val)
 772 {
 773         struct mac80211_hwsim_data *data = dat;
 774         *val = data->group;
 775         return 0;
 776 }
 777
 778 static int hwsim_fops_group_write(void *dat, u64 val)
 779 {
 780         struct mac80211_hwsim_data *data = dat;
 781         data->group = val;
 782         return 0;
 783 }
 784
 785 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 786                         hwsim_fops_group_read, hwsim_fops_group_write,
 787                         "%llx\n");
 788
 789 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 790                                         struct net_device *dev)
 791 {
 792         /* TODO: allow packet injection */
 793         dev_kfree_skb(skb);
 794         return NETDEV_TX_OK;
 795 }
 796
 797 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 798 {
 799         return ktime_to_us(ktime_get_real());
 800 }
 801
 802 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 803 {
 804         u64 now = mac80211_hwsim_get_tsf_raw();
 805         return cpu_to_le64(now + data->tsf_offset);
 806 }
 807
 808 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 809                                   struct ieee80211_vif *vif)
 810 {
 811         struct mac80211_hwsim_data *data = hw->priv;
 812         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 813 }
 814
 815 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 816                 struct ieee80211_vif *vif, u64 tsf)
 817 {
 818         struct mac80211_hwsim_data *data = hw->priv;
 819         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 820         u32 bcn_int = data->beacon_int;
 821         u64 delta = abs(tsf - now);
 822
 823         /* adjust after beaconing with new timestamp at old TBTT */
 824         if (tsf > now) {
 825                 data->tsf_offset += delta;
 826                 data->bcn_delta = do_div(delta, bcn_int);
 827         } else {
 828                 data->tsf_offset -= delta;
 829                 data->bcn_delta = -do_div(delta, bcn_int);
 830         }
 831 }
 832
 833 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 834                                       struct sk_buff *tx_skb,
 835                                       struct ieee80211_channel *chan)
 836 {
 837         struct mac80211_hwsim_data *data = hw->priv;
 838         struct sk_buff *skb;
 839         struct hwsim_radiotap_hdr *hdr;
 840         u16 flags;
 841         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 842         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 843
 844         if (WARN_ON(!txrate))
 845                 return;
 846
 847         if (!netif_running(hwsim_mon))
 848                 return;
 849
 850         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 851         if (skb == NULL)
 852                 return;
 853
 854         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 855         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 856         hdr->hdr.it_pad = 0;
 857         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 858         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 859                                           (1 << IEEE80211_RADIOTAP_RATE) |
 860                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 861                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 862         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 863         hdr->rt_flags = 0;
 864         hdr->rt_rate = txrate->bitrate / 5;
 865         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 866         flags = IEEE80211_CHAN_2GHZ;
 867         if (txrate->flags & IEEE80211_RATE_ERP_G)
 868                 flags |= IEEE80211_CHAN_OFDM;
 869         else
 870                 flags |= IEEE80211_CHAN_CCK;
 871         hdr->rt_chbitmask = cpu_to_le16(flags);
 872
 873         skb->dev = hwsim_mon;
 874         skb_reset_mac_header(skb);
 875         skb->ip_summed = CHECKSUM_UNNECESSARY;
 876         skb->pkt_type = PACKET_OTHERHOST;
 877         skb->protocol = htons(ETH_P_802_2);
 878         memset(skb->cb, 0, sizeof(skb->cb));
 879         netif_rx(skb);
 880 }
 881
 882
 883 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 884                                        const u8 *addr)
 885 {
 886         struct sk_buff *skb;
 887         struct hwsim_radiotap_ack_hdr *hdr;
 888         u16 flags;
 889         struct ieee80211_hdr *hdr11;
 890
 891         if (!netif_running(hwsim_mon))
 892                 return;
 893
 894         skb = dev_alloc_skb(100);
 895         if (skb == NULL)
 896                 return;
 897
 898         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 899         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 900         hdr->hdr.it_pad = 0;
 901         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 902         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 903                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 904         hdr->rt_flags = 0;
 905         hdr->pad = 0;
 906         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 907         flags = IEEE80211_CHAN_2GHZ;
 908         hdr->rt_chbitmask = cpu_to_le16(flags);
 909
 910         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 911         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 912                                            IEEE80211_STYPE_ACK);
 913         hdr11->duration_id = cpu_to_le16(0);
 914         memcpy(hdr11->addr1, addr, ETH_ALEN);
 915
 916         skb->dev = hwsim_mon;
 917         skb_reset_mac_header(skb);
 918         skb->ip_summed = CHECKSUM_UNNECESSARY;
 919         skb->pkt_type = PACKET_OTHERHOST;
 920         skb->protocol = htons(ETH_P_802_2);
 921         memset(skb->cb, 0, sizeof(skb->cb));
 922         netif_rx(skb);
 923 }
 924
 925 struct mac80211_hwsim_addr_match_data {
 926         u8 addr[ETH_ALEN];
 927         bool ret;
 928 };
 929
 930 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 931                                      struct ieee80211_vif *vif)
 932 {
 933         struct mac80211_hwsim_addr_match_data *md = data;
 934
 935         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 936                 md->ret = true;
 937 }
 938
 939 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 940                                       const u8 *addr)
 941 {
 942         struct mac80211_hwsim_addr_match_data md = {
 943                 .ret = false,
 944         };
 945
 946         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 947                 return true;
 948
 949         memcpy(md.addr, addr, ETH_ALEN);
 950
 951         ieee80211_iterate_active_interfaces_atomic(data->hw,
 952                                                    IEEE80211_IFACE_ITER_NORMAL,
 953                                                    mac80211_hwsim_addr_iter,
 954                                                    &md);
 955
 956         return md.ret;
 957 }
 958
 959 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 960                            struct sk_buff *skb)
 961 {
 962         switch (data->ps) {
 963         case PS_DISABLED:
 964                 return true;
 965         case PS_ENABLED:
 966                 return false;
 967         case PS_AUTO_POLL:
 968                 /* TODO: accept (some) Beacons by default and other frames only
 969                  * if pending PS-Poll has been sent */
 970                 return true;
 971         case PS_MANUAL_POLL:
 972                 /* Allow unicast frames to own address if there is a pending
 973                  * PS-Poll */
 974                 if (data->ps_poll_pending &&
 975                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 976                         data->ps_poll_pending = false;
 977                         return true;
 978                 }
 979                 return false;
 980         }
 981
 982         return true;
 983 }
 984
 985 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 986                                   struct sk_buff *skb, int portid)
 987 {
 988         struct net *net;
 989         bool found = false;
 990         int res = -ENOENT;
 991
 992         rcu_read_lock();
 993         for_each_net_rcu(net) {
 994                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 995                         res = genlmsg_unicast(net, skb, portid);
 996                         found = true;
 997                         break;
 998                 }
 999         }
1000         rcu_read_unlock();
1001
1002         if (!found)
1003                 nlmsg_free(skb);
1004
1005         return res;
1006 }
1007
1008 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1009                                        struct sk_buff *my_skb,
1010                                        int dst_portid)
1011 {
1012         struct sk_buff *skb;
1013         struct mac80211_hwsim_data *data = hw->priv;
1014         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1015         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1016         void *msg_head;
1017         unsigned int hwsim_flags = 0;
1018         int i;
1019         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1020         uintptr_t cookie;
1021
1022         if (data->ps != PS_DISABLED)
1023                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1024         /* If the queue contains MAX_QUEUE skb's drop some */
1025         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1026                 /* Droping until WARN_QUEUE level */
1027                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1028                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1029                         data->tx_dropped++;
1030                 }
1031         }
1032
1033         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1034         if (skb == NULL)
1035                 goto nla_put_failure;
1036
1037         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1038                                HWSIM_CMD_FRAME);
1039         if (msg_head == NULL) {
1040                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1041                 goto nla_put_failure;
1042         }
1043
1044         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1045                     ETH_ALEN, data->addresses[1].addr))
1046                 goto nla_put_failure;
1047
1048         /* We get the skb->data */
1049         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1050                 goto nla_put_failure;
1051
1052         /* We get the flags for this transmission, and we translate them to
1053            wmediumd flags  */
1054
1055         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1056                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1057
1058         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1059                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1060
1061         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1062                 goto nla_put_failure;
1063
1064         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1065                 goto nla_put_failure;
1066
1067         /* We get the tx control (rate and retries) info*/
1068
1069         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1070                 tx_attempts[i].idx = info->status.rates[i].idx;
1071                 tx_attempts[i].count = info->status.rates[i].count;
1072         }
1073
1074         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1075                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1076                     tx_attempts))
1077                 goto nla_put_failure;
1078
1079         /* We create a cookie to identify this skb */
1080         data->pending_cookie++;
1081         cookie = data->pending_cookie;
1082         info->rate_driver_data[0] = (void *)cookie;
1083         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1084                 goto nla_put_failure;
1085
1086         genlmsg_end(skb, msg_head);
1087         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1088                 goto err_free_txskb;
1089
1090         /* Enqueue the packet */
1091         skb_queue_tail(&data->pending, my_skb);
1092         data->tx_pkts++;
1093         data->tx_bytes += my_skb->len;
1094         return;
1095
1096 nla_put_failure:
1097         nlmsg_free(skb);
1098 err_free_txskb:
1099         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1100         ieee80211_free_txskb(hw, my_skb);
1101         data->tx_failed++;
1102 }
1103
1104 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1105                                struct ieee80211_channel *c2)
1106 {
1107         if (!c1 || !c2)
1108                 return false;
1109
1110         return c1->center_freq == c2->center_freq;
1111 }
1112
1113 struct tx_iter_data {
1114         struct ieee80211_channel *channel;
1115         bool receive;
1116 };
1117
1118 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1119                                    struct ieee80211_vif *vif)
1120 {
1121         struct tx_iter_data *data = _data;
1122
1123         if (!vif->chanctx_conf)
1124                 return;
1125
1126         if (!hwsim_chans_compat(data->channel,
1127                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1128                 return;
1129
1130         data->receive = true;
1131 }
1132
1133 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1134 {
1135         /*
1136          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1137          * e.g. like this:
1138          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1139          * (but you should use a valid OUI, not that)
1140          *
1141          * If anyone wants to 'donate' a radiotap OUI/subns code
1142          * please send a patch removing this #ifdef and changing
1143          * the values accordingly.
1144          */
1145 #ifdef HWSIM_RADIOTAP_OUI
1146         struct ieee80211_vendor_radiotap *rtap;
1147
1148         /*
1149          * Note that this code requires the headroom in the SKB
1150          * that was allocated earlier.
1151          */
1152         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1153         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1154         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1155         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1156         rtap->subns = 127;
1157
1158         /*
1159          * Radiotap vendor namespaces can (and should) also be
1160          * split into fields by using the standard radiotap
1161          * presence bitmap mechanism. Use just BIT(0) here for
1162          * the presence bitmap.
1163          */
1164         rtap->present = BIT(0);
1165         /* We have 8 bytes of (dummy) data */
1166         rtap->len = 8;
1167         /* For testing, also require it to be aligned */
1168         rtap->align = 8;
1169         /* And also test that padding works, 4 bytes */
1170         rtap->pad = 4;
1171         /* push the data */
1172         memcpy(rtap->data, "ABCDEFGH", 8);
1173         /* make sure to clear padding, mac80211 doesn't */
1174         memset(rtap->data + 8, 0, 4);
1175
1176         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1177 #endif
1178 }
1179
1180 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1181                                           struct sk_buff *skb,
1182                                           struct ieee80211_channel *chan)
1183 {
1184         struct mac80211_hwsim_data *data = hw->priv, *data2;
1185         bool ack = false;
1186         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1187         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1188         struct ieee80211_rx_status rx_status;
1189         u64 now;
1190
1191         memset(&rx_status, 0, sizeof(rx_status));
1192         rx_status.flag |= RX_FLAG_MACTIME_START;
1193         rx_status.freq = chan->center_freq;
1194         rx_status.band = chan->band;
1195         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1196                 rx_status.rate_idx =
1197                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1198                 rx_status.vht_nss =
1199                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1200                 rx_status.flag |= RX_FLAG_VHT;
1201         } else {
1202                 rx_status.rate_idx = info->control.rates[0].idx;
1203                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1204                         rx_status.flag |= RX_FLAG_HT;
1205         }
1206         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1207                 rx_status.flag |= RX_FLAG_40MHZ;
1208         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1209                 rx_status.flag |= RX_FLAG_SHORT_GI;
1210         /* TODO: simulate real signal strength (and optional packet loss) */
1211         rx_status.signal = data->power_level - 50;
1212
1213         if (data->ps != PS_DISABLED)
1214                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1215
1216         /* release the skb's source info */
1217         skb_orphan(skb);
1218         skb_dst_drop(skb);
1219         skb->mark = 0;
1220         secpath_reset(skb);
1221         nf_reset(skb);
1222
1223         /*
1224          * Get absolute mactime here so all HWs RX at the "same time", and
1225          * absolute TX time for beacon mactime so the timestamp matches.
1226          * Giving beacons a different mactime than non-beacons looks messy, but
1227          * it helps the Toffset be exact and a ~10us mactime discrepancy
1228          * probably doesn't really matter.
1229          */
1230         if (ieee80211_is_beacon(hdr->frame_control) ||
1231             ieee80211_is_probe_resp(hdr->frame_control))
1232                 now = data->abs_bcn_ts;
1233         else
1234                 now = mac80211_hwsim_get_tsf_raw();
1235
1236         /* Copy skb to all enabled radios that are on the current frequency */
1237         spin_lock(&hwsim_radio_lock);
1238         list_for_each_entry(data2, &hwsim_radios, list) {
1239                 struct sk_buff *nskb;
1240                 struct tx_iter_data tx_iter_data = {
1241                         .receive = false,
1242                         .channel = chan,
1243                 };
1244
1245                 if (data == data2)
1246                         continue;
1247
1248                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1249                     !hwsim_ps_rx_ok(data2, skb))
1250                         continue;
1251
1252                 if (!(data->group & data2->group))
1253                         continue;
1254
1255                 if (data->netgroup != data2->netgroup)
1256                         continue;
1257
1258                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1259                     !hwsim_chans_compat(chan, data2->channel)) {
1260                         ieee80211_iterate_active_interfaces_atomic(
1261                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1262                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1263                         if (!tx_iter_data.receive)
1264                                 continue;
1265                 }
1266
1267                 /*
1268                  * reserve some space for our vendor and the normal
1269                  * radiotap header, since we're copying anyway
1270                  */
1271                 if (skb->len < PAGE_SIZE && paged_rx) {
1272                         struct page *page = alloc_page(GFP_ATOMIC);
1273
1274                         if (!page)
1275                                 continue;
1276
1277                         nskb = dev_alloc_skb(128);
1278                         if (!nskb) {
1279                                 __free_page(page);
1280                                 continue;
1281                         }
1282
1283                         memcpy(page_address(page), skb->data, skb->len);
1284                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1285                 } else {
1286                         nskb = skb_copy(skb, GFP_ATOMIC);
1287                         if (!nskb)
1288                                 continue;
1289                 }
1290
1291                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1292                         ack = true;
1293
1294                 rx_status.mactime = now + data2->tsf_offset;
1295
1296                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1297
1298                 mac80211_hwsim_add_vendor_rtap(nskb);
1299
1300                 data2->rx_pkts++;
1301                 data2->rx_bytes += nskb->len;
1302                 ieee80211_rx_irqsafe(data2->hw, nskb);
1303         }
1304         spin_unlock(&hwsim_radio_lock);
1305
1306         return ack;
1307 }
1308
1309 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1310                               struct ieee80211_tx_control *control,
1311                               struct sk_buff *skb)
1312 {
1313         struct mac80211_hwsim_data *data = hw->priv;
1314         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1315         struct ieee80211_hdr *hdr = (void *)skb->data;
1316         struct ieee80211_chanctx_conf *chanctx_conf;
1317         struct ieee80211_channel *channel;
1318         bool ack;
1319         u32 _portid;
1320
1321         if (WARN_ON(skb->len < 10)) {
1322                 /* Should not happen; just a sanity check for addr1 use */
1323                 ieee80211_free_txskb(hw, skb);
1324                 return;
1325         }
1326
1327         if (!data->use_chanctx) {
1328                 channel = data->channel;
1329         } else if (txi->hw_queue == 4) {
1330                 channel = data->tmp_chan;
1331         } else {
1332                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1333                 if (chanctx_conf)
1334                         channel = chanctx_conf->def.chan;
1335                 else
1336                         channel = NULL;
1337         }
1338
1339         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1340                 ieee80211_free_txskb(hw, skb);
1341                 return;
1342         }
1343
1344         if (data->idle && !data->tmp_chan) {
1345                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1346                 ieee80211_free_txskb(hw, skb);
1347                 return;
1348         }
1349
1350         if (txi->control.vif)
1351                 hwsim_check_magic(txi->control.vif);
1352         if (control->sta)
1353                 hwsim_check_sta_magic(control->sta);
1354
1355         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1356                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1357                                        txi->control.rates,
1358                                        ARRAY_SIZE(txi->control.rates));
1359
1360         txi->rate_driver_data[0] = channel;
1361
1362         if (skb->len >= 24 + 8 &&
1363             ieee80211_is_probe_resp(hdr->frame_control)) {
1364                 /* fake header transmission time */
1365                 struct ieee80211_mgmt *mgmt;
1366                 struct ieee80211_rate *txrate;
1367                 u64 ts;
1368
1369                 mgmt = (struct ieee80211_mgmt *)skb->data;
1370                 txrate = ieee80211_get_tx_rate(hw, txi);
1371                 ts = mac80211_hwsim_get_tsf_raw();
1372                 mgmt->u.probe_resp.timestamp =
1373                         cpu_to_le64(ts + data->tsf_offset +
1374                                     24 * 8 * 10 / txrate->bitrate);
1375         }
1376
1377         mac80211_hwsim_monitor_rx(hw, skb, channel);
1378
1379         /* wmediumd mode check */
1380         _portid = ACCESS_ONCE(data->wmediumd);
1381
1382         if (_portid)
1383                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1384
1385         /* NO wmediumd detected, perfect medium simulation */
1386         data->tx_pkts++;
1387         data->tx_bytes += skb->len;
1388         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1389
1390         if (ack && skb->len >= 16)
1391                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1392
1393         ieee80211_tx_info_clear_status(txi);
1394
1395         /* frame was transmitted at most favorable rate at first attempt */
1396         txi->control.rates[0].count = 1;
1397         txi->control.rates[1].idx = -1;
1398
1399         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1400                 txi->flags |= IEEE80211_TX_STAT_ACK;
1401         ieee80211_tx_status_irqsafe(hw, skb);
1402 }
1403
1404
1405 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1406 {
1407         struct mac80211_hwsim_data *data = hw->priv;
1408         wiphy_debug(hw->wiphy, "%s\n", __func__);
1409         data->started = true;
1410         return 0;
1411 }
1412
1413
1414 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1415 {
1416         struct mac80211_hwsim_data *data = hw->priv;
1417         data->started = false;
1418         tasklet_hrtimer_cancel(&data->beacon_timer);
1419         wiphy_debug(hw->wiphy, "%s\n", __func__);
1420 }
1421
1422
1423 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1424                                         struct ieee80211_vif *vif)
1425 {
1426         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1427                     __func__, ieee80211_vif_type_p2p(vif),
1428                     vif->addr);
1429         hwsim_set_magic(vif);
1430
1431         vif->cab_queue = 0;
1432         vif->hw_queue[IEEE80211_AC_VO] = 0;
1433         vif->hw_queue[IEEE80211_AC_VI] = 1;
1434         vif->hw_queue[IEEE80211_AC_BE] = 2;
1435         vif->hw_queue[IEEE80211_AC_BK] = 3;
1436
1437         return 0;
1438 }
1439
1440
1441 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1442                                            struct ieee80211_vif *vif,
1443                                            enum nl80211_iftype newtype,
1444                                            bool newp2p)
1445 {
1446         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1447         wiphy_debug(hw->wiphy,
1448                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1449                     __func__, ieee80211_vif_type_p2p(vif),
1450                     newtype, vif->addr);
1451         hwsim_check_magic(vif);
1452
1453         /*
1454          * interface may change from non-AP to AP in
1455          * which case this needs to be set up again
1456          */
1457         vif->cab_queue = 0;
1458
1459         return 0;
1460 }
1461
1462 static void mac80211_hwsim_remove_interface(
1463         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1464 {
1465         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1466                     __func__, ieee80211_vif_type_p2p(vif),
1467                     vif->addr);
1468         hwsim_check_magic(vif);
1469         hwsim_clear_magic(vif);
1470 }
1471
1472 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1473                                     struct sk_buff *skb,
1474                                     struct ieee80211_channel *chan)
1475 {
1476         struct mac80211_hwsim_data *data = hw->priv;
1477         u32 _pid = ACCESS_ONCE(data->wmediumd);
1478
1479         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1480                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1481                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1482                                        txi->control.rates,
1483                                        ARRAY_SIZE(txi->control.rates));
1484         }
1485
1486         mac80211_hwsim_monitor_rx(hw, skb, chan);
1487
1488         if (_pid)
1489                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1490
1491         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1492         dev_kfree_skb(skb);
1493 }
1494
1495 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1496                                      struct ieee80211_vif *vif)
1497 {
1498         struct mac80211_hwsim_data *data = arg;
1499         struct ieee80211_hw *hw = data->hw;
1500         struct ieee80211_tx_info *info;
1501         struct ieee80211_rate *txrate;
1502         struct ieee80211_mgmt *mgmt;
1503         struct sk_buff *skb;
1504
1505         hwsim_check_magic(vif);
1506
1507         if (vif->type != NL80211_IFTYPE_AP &&
1508             vif->type != NL80211_IFTYPE_MESH_POINT &&
1509             vif->type != NL80211_IFTYPE_ADHOC)
1510                 return;
1511
1512         skb = ieee80211_beacon_get(hw, vif);
1513         if (skb == NULL)
1514                 return;
1515         info = IEEE80211_SKB_CB(skb);
1516         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1517                 ieee80211_get_tx_rates(vif, NULL, skb,
1518                                        info->control.rates,
1519                                        ARRAY_SIZE(info->control.rates));
1520
1521         txrate = ieee80211_get_tx_rate(hw, info);
1522
1523         mgmt = (struct ieee80211_mgmt *) skb->data;
1524         /* fake header transmission time */
1525         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1526         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1527                                                data->tsf_offset +
1528                                                24 * 8 * 10 / txrate->bitrate);
1529
1530         mac80211_hwsim_tx_frame(hw, skb,
1531                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1532
1533         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1534                 ieee80211_csa_finish(vif);
1535 }
1536
1537 static enum hrtimer_restart
1538 mac80211_hwsim_beacon(struct hrtimer *timer)
1539 {
1540         struct mac80211_hwsim_data *data =
1541                 container_of(timer, struct mac80211_hwsim_data,
1542                              beacon_timer.timer);
1543         struct ieee80211_hw *hw = data->hw;
1544         u64 bcn_int = data->beacon_int;
1545         ktime_t next_bcn;
1546
1547         if (!data->started)
1548                 goto out;
1549
1550         ieee80211_iterate_active_interfaces_atomic(
1551                 hw, IEEE80211_IFACE_ITER_NORMAL,
1552                 mac80211_hwsim_beacon_tx, data);
1553
1554         /* beacon at new TBTT + beacon interval */
1555         if (data->bcn_delta) {
1556                 bcn_int -= data->bcn_delta;
1557                 data->bcn_delta = 0;
1558         }
1559
1560         next_bcn = ktime_add(hrtimer_get_expires(timer),
1561                              ns_to_ktime(bcn_int * 1000));
1562         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1563 out:
1564         return HRTIMER_NORESTART;
1565 }
1566
1567 static const char * const hwsim_chanwidths[] = {
1568         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1569         [NL80211_CHAN_WIDTH_20] = "ht20",
1570         [NL80211_CHAN_WIDTH_40] = "ht40",
1571         [NL80211_CHAN_WIDTH_80] = "vht80",
1572         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1573         [NL80211_CHAN_WIDTH_160] = "vht160",
1574 };
1575
1576 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1577 {
1578         struct mac80211_hwsim_data *data = hw->priv;
1579         struct ieee80211_conf *conf = &hw->conf;
1580         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1581                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1582                 [IEEE80211_SMPS_OFF] = "off",
1583                 [IEEE80211_SMPS_STATIC] = "static",
1584                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1585         };
1586
1587         if (conf->chandef.chan)
1588                 wiphy_debug(hw->wiphy,
1589                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1590                             __func__,
1591                             conf->chandef.chan->center_freq,
1592                             conf->chandef.center_freq1,
1593                             conf->chandef.center_freq2,
1594                             hwsim_chanwidths[conf->chandef.width],
1595                             !!(conf->flags & IEEE80211_CONF_IDLE),
1596                             !!(conf->flags & IEEE80211_CONF_PS),
1597                             smps_modes[conf->smps_mode]);
1598         else
1599                 wiphy_debug(hw->wiphy,
1600                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1601                             __func__,
1602                             !!(conf->flags & IEEE80211_CONF_IDLE),
1603                             !!(conf->flags & IEEE80211_CONF_PS),
1604                             smps_modes[conf->smps_mode]);
1605
1606         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1607
1608         data->channel = conf->chandef.chan;
1609
1610         WARN_ON(data->channel && data->use_chanctx);
1611
1612         data->power_level = conf->power_level;
1613         if (!data->started || !data->beacon_int)
1614                 tasklet_hrtimer_cancel(&data->beacon_timer);
1615         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1616                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1617                 u32 bcn_int = data->beacon_int;
1618                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1619
1620                 tasklet_hrtimer_start(&data->beacon_timer,
1621                                       ns_to_ktime(until_tbtt * 1000),
1622                                       HRTIMER_MODE_REL);
1623         }
1624
1625         return 0;
1626 }
1627
1628
1629 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1630                                             unsigned int changed_flags,
1631                                             unsigned int *total_flags,u64 multicast)
1632 {
1633         struct mac80211_hwsim_data *data = hw->priv;
1634
1635         wiphy_debug(hw->wiphy, "%s\n", __func__);
1636
1637         data->rx_filter = 0;
1638         if (*total_flags & FIF_ALLMULTI)
1639                 data->rx_filter |= FIF_ALLMULTI;
1640
1641         *total_flags = data->rx_filter;
1642 }
1643
1644 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1645                                        struct ieee80211_vif *vif)
1646 {
1647         unsigned int *count = data;
1648         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1649
1650         if (vp->bcn_en)
1651                 (*count)++;
1652 }
1653
1654 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1655                                             struct ieee80211_vif *vif,
1656                                             struct ieee80211_bss_conf *info,
1657                                             u32 changed)
1658 {
1659         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1660         struct mac80211_hwsim_data *data = hw->priv;
1661
1662         hwsim_check_magic(vif);
1663
1664         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1665                     __func__, changed, vif->addr);
1666
1667         if (changed & BSS_CHANGED_BSSID) {
1668                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1669                             __func__, info->bssid);
1670                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1671         }
1672
1673         if (changed & BSS_CHANGED_ASSOC) {
1674                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1675                             info->assoc, info->aid);
1676                 vp->assoc = info->assoc;
1677                 vp->aid = info->aid;
1678         }
1679
1680         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1681                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1682                             info->enable_beacon, info->beacon_int);
1683                 vp->bcn_en = info->enable_beacon;
1684                 if (data->started &&
1685                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1686                     info->enable_beacon) {
1687                         u64 tsf, until_tbtt;
1688                         u32 bcn_int;
1689                         data->beacon_int = info->beacon_int * 1024;
1690                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1691                         bcn_int = data->beacon_int;
1692                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1693                         tasklet_hrtimer_start(&data->beacon_timer,
1694                                               ns_to_ktime(until_tbtt * 1000),
1695                                               HRTIMER_MODE_REL);
1696                 } else if (!info->enable_beacon) {
1697                         unsigned int count = 0;
1698                         ieee80211_iterate_active_interfaces_atomic(
1699                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1700                                 mac80211_hwsim_bcn_en_iter, &count);
1701                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1702                                     count);
1703                         if (count == 0) {
1704                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1705                                 data->beacon_int = 0;
1706                         }
1707                 }
1708         }
1709
1710         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1711                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1712                             info->use_cts_prot);
1713         }
1714
1715         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1716                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1717                             info->use_short_preamble);
1718         }
1719
1720         if (changed & BSS_CHANGED_ERP_SLOT) {
1721                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1722         }
1723
1724         if (changed & BSS_CHANGED_HT) {
1725                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1726                             info->ht_operation_mode);
1727         }
1728
1729         if (changed & BSS_CHANGED_BASIC_RATES) {
1730                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1731                             (unsigned long long) info->basic_rates);
1732         }
1733
1734         if (changed & BSS_CHANGED_TXPOWER)
1735                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1736 }
1737
1738 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1739                                   struct ieee80211_vif *vif,
1740                                   struct ieee80211_sta *sta)
1741 {
1742         hwsim_check_magic(vif);
1743         hwsim_set_sta_magic(sta);
1744
1745         return 0;
1746 }
1747
1748 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1749                                      struct ieee80211_vif *vif,
1750                                      struct ieee80211_sta *sta)
1751 {
1752         hwsim_check_magic(vif);
1753         hwsim_clear_sta_magic(sta);
1754
1755         return 0;
1756 }
1757
1758 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1759                                       struct ieee80211_vif *vif,
1760                                       enum sta_notify_cmd cmd,
1761                                       struct ieee80211_sta *sta)
1762 {
1763         hwsim_check_magic(vif);
1764
1765         switch (cmd) {
1766         case STA_NOTIFY_SLEEP:
1767         case STA_NOTIFY_AWAKE:
1768                 /* TODO: make good use of these flags */
1769                 break;
1770         default:
1771                 WARN(1, "Invalid sta notify: %d\n", cmd);
1772                 break;
1773         }
1774 }
1775
1776 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1777                                   struct ieee80211_sta *sta,
1778                                   bool set)
1779 {
1780         hwsim_check_sta_magic(sta);
1781         return 0;
1782 }
1783
1784 static int mac80211_hwsim_conf_tx(
1785         struct ieee80211_hw *hw,
1786         struct ieee80211_vif *vif, u16 queue,
1787         const struct ieee80211_tx_queue_params *params)
1788 {
1789         wiphy_debug(hw->wiphy,
1790                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1791                     __func__, queue,
1792                     params->txop, params->cw_min,
1793                     params->cw_max, params->aifs);
1794         return 0;
1795 }
1796
1797 static int mac80211_hwsim_get_survey(
1798         struct ieee80211_hw *hw, int idx,
1799         struct survey_info *survey)
1800 {
1801         struct ieee80211_conf *conf = &hw->conf;
1802
1803         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1804
1805         if (idx != 0)
1806                 return -ENOENT;
1807
1808         /* Current channel */
1809         survey->channel = conf->chandef.chan;
1810
1811         /*
1812          * Magically conjured noise level --- this is only ok for simulated hardware.
1813          *
1814          * A real driver which cannot determine the real channel noise MUST NOT
1815          * report any noise, especially not a magically conjured one :-)
1816          */
1817         survey->filled = SURVEY_INFO_NOISE_DBM;
1818         survey->noise = -92;
1819
1820         return 0;
1821 }
1822
1823 #ifdef CONFIG_NL80211_TESTMODE
1824 /*
1825  * This section contains example code for using netlink
1826  * attributes with the testmode command in nl80211.
1827  */
1828
1829 /* These enums need to be kept in sync with userspace */
1830 enum hwsim_testmode_attr {
1831         __HWSIM_TM_ATTR_INVALID = 0,
1832         HWSIM_TM_ATTR_CMD       = 1,
1833         HWSIM_TM_ATTR_PS        = 2,
1834
1835         /* keep last */
1836         __HWSIM_TM_ATTR_AFTER_LAST,
1837         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1838 };
1839
1840 enum hwsim_testmode_cmd {
1841         HWSIM_TM_CMD_SET_PS             = 0,
1842         HWSIM_TM_CMD_GET_PS             = 1,
1843         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1844         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1845 };
1846
1847 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1848         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1849         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1850 };
1851
1852 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1853                                        struct ieee80211_vif *vif,
1854                                        void *data, int len)
1855 {
1856         struct mac80211_hwsim_data *hwsim = hw->priv;
1857         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1858         struct sk_buff *skb;
1859         int err, ps;
1860
1861         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1862                         hwsim_testmode_policy);
1863         if (err)
1864                 return err;
1865
1866         if (!tb[HWSIM_TM_ATTR_CMD])
1867                 return -EINVAL;
1868
1869         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1870         case HWSIM_TM_CMD_SET_PS:
1871                 if (!tb[HWSIM_TM_ATTR_PS])
1872                         return -EINVAL;
1873                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1874                 return hwsim_fops_ps_write(hwsim, ps);
1875         case HWSIM_TM_CMD_GET_PS:
1876                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1877                                                 nla_total_size(sizeof(u32)));
1878                 if (!skb)
1879                         return -ENOMEM;
1880                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1881                         goto nla_put_failure;
1882                 return cfg80211_testmode_reply(skb);
1883         case HWSIM_TM_CMD_STOP_QUEUES:
1884                 ieee80211_stop_queues(hw);
1885                 return 0;
1886         case HWSIM_TM_CMD_WAKE_QUEUES:
1887                 ieee80211_wake_queues(hw);
1888                 return 0;
1889         default:
1890                 return -EOPNOTSUPP;
1891         }
1892
1893  nla_put_failure:
1894         kfree_skb(skb);
1895         return -ENOBUFS;
1896 }
1897 #endif
1898
1899 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1900                                        struct ieee80211_vif *vif,
1901                                        struct ieee80211_ampdu_params *params)
1902 {
1903         struct ieee80211_sta *sta = params->sta;
1904         enum ieee80211_ampdu_mlme_action action = params->action;
1905         u16 tid = params->tid;
1906
1907         switch (action) {
1908         case IEEE80211_AMPDU_TX_START:
1909                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1910                 break;
1911         case IEEE80211_AMPDU_TX_STOP_CONT:
1912         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1913         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1914                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1915                 break;
1916         case IEEE80211_AMPDU_TX_OPERATIONAL:
1917                 break;
1918         case IEEE80211_AMPDU_RX_START:
1919         case IEEE80211_AMPDU_RX_STOP:
1920                 break;
1921         default:
1922                 return -EOPNOTSUPP;
1923         }
1924
1925         return 0;
1926 }
1927
1928 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1929                                  struct ieee80211_vif *vif,
1930                                  u32 queues, bool drop)
1931 {
1932         /* Not implemented, queues only on kernel side */
1933 }
1934
1935 static void hw_scan_work(struct work_struct *work)
1936 {
1937         struct mac80211_hwsim_data *hwsim =
1938                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1939         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1940         int dwell, i;
1941
1942         mutex_lock(&hwsim->mutex);
1943         if (hwsim->scan_chan_idx >= req->n_channels) {
1944                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1945                 ieee80211_scan_completed(hwsim->hw, false);
1946                 hwsim->hw_scan_request = NULL;
1947                 hwsim->hw_scan_vif = NULL;
1948                 hwsim->tmp_chan = NULL;
1949                 mutex_unlock(&hwsim->mutex);
1950                 return;
1951         }
1952
1953         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1954                     req->channels[hwsim->scan_chan_idx]->center_freq);
1955
1956         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1957         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1958                                       IEEE80211_CHAN_RADAR) ||
1959             !req->n_ssids) {
1960                 dwell = 120;
1961         } else {
1962                 dwell = 30;
1963                 /* send probes */
1964                 for (i = 0; i < req->n_ssids; i++) {
1965                         struct sk_buff *probe;
1966                         struct ieee80211_mgmt *mgmt;
1967
1968                         probe = ieee80211_probereq_get(hwsim->hw,
1969                                                        hwsim->scan_addr,
1970                                                        req->ssids[i].ssid,
1971                                                        req->ssids[i].ssid_len,
1972                                                        req->ie_len);
1973                         if (!probe)
1974                                 continue;
1975
1976                         mgmt = (struct ieee80211_mgmt *) probe->data;
1977                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
1978                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
1979
1980                         if (req->ie_len)
1981                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1982                                        req->ie_len);
1983
1984                         local_bh_disable();
1985                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1986                                                 hwsim->tmp_chan);
1987                         local_bh_enable();
1988                 }
1989         }
1990         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1991                                      msecs_to_jiffies(dwell));
1992         hwsim->scan_chan_idx++;
1993         mutex_unlock(&hwsim->mutex);
1994 }
1995
1996 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1997                                   struct ieee80211_vif *vif,
1998                                   struct ieee80211_scan_request *hw_req)
1999 {
2000         struct mac80211_hwsim_data *hwsim = hw->priv;
2001         struct cfg80211_scan_request *req = &hw_req->req;
2002
2003         mutex_lock(&hwsim->mutex);
2004         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2005                 mutex_unlock(&hwsim->mutex);
2006                 return -EBUSY;
2007         }
2008         hwsim->hw_scan_request = req;
2009         hwsim->hw_scan_vif = vif;
2010         hwsim->scan_chan_idx = 0;
2011         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2012                 get_random_mask_addr(hwsim->scan_addr,
2013                                      hw_req->req.mac_addr,
2014                                      hw_req->req.mac_addr_mask);
2015         else
2016                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2017         mutex_unlock(&hwsim->mutex);
2018
2019         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2020
2021         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2022
2023         return 0;
2024 }
2025
2026 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2027                                           struct ieee80211_vif *vif)
2028 {
2029         struct mac80211_hwsim_data *hwsim = hw->priv;
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, true);
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 static const struct ieee80211_ops mac80211_hwsim_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         .sw_scan_start = mac80211_hwsim_sw_scan,
2271         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2272         .flush = mac80211_hwsim_flush,
2273         .get_tsf = mac80211_hwsim_get_tsf,
2274         .set_tsf = mac80211_hwsim_set_tsf,
2275         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2276         .get_et_stats = mac80211_hwsim_get_et_stats,
2277         .get_et_strings = mac80211_hwsim_get_et_strings,
2278 };
2279
2280 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2281
2282 struct hwsim_new_radio_params {
2283         unsigned int channels;
2284         const char *reg_alpha2;
2285         const struct ieee80211_regdomain *regd;
2286         bool reg_strict;
2287         bool p2p_device;
2288         bool use_chanctx;
2289         bool destroy_on_close;
2290         const char *hwname;
2291         bool no_vif;
2292 };
2293
2294 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2295                                    struct genl_info *info)
2296 {
2297         if (info)
2298                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2299                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2300         else
2301                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2302                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2303 }
2304
2305 static int append_radio_msg(struct sk_buff *skb, int id,
2306                             struct hwsim_new_radio_params *param)
2307 {
2308         int ret;
2309
2310         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2311         if (ret < 0)
2312                 return ret;
2313
2314         if (param->channels) {
2315                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2316                 if (ret < 0)
2317                         return ret;
2318         }
2319
2320         if (param->reg_alpha2) {
2321                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2322                               param->reg_alpha2);
2323                 if (ret < 0)
2324                         return ret;
2325         }
2326
2327         if (param->regd) {
2328                 int i;
2329
2330                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2331                         if (hwsim_world_regdom_custom[i] != param->regd)
2332                                 continue;
2333
2334                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2335                         if (ret < 0)
2336                                 return ret;
2337                         break;
2338                 }
2339         }
2340
2341         if (param->reg_strict) {
2342                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2343                 if (ret < 0)
2344                         return ret;
2345         }
2346
2347         if (param->p2p_device) {
2348                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2349                 if (ret < 0)
2350                         return ret;
2351         }
2352
2353         if (param->use_chanctx) {
2354                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2355                 if (ret < 0)
2356                         return ret;
2357         }
2358
2359         if (param->hwname) {
2360                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2361                               strlen(param->hwname), param->hwname);
2362                 if (ret < 0)
2363                         return ret;
2364         }
2365
2366         return 0;
2367 }
2368
2369 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2370                                   struct hwsim_new_radio_params *param)
2371 {
2372         struct sk_buff *mcast_skb;
2373         void *data;
2374
2375         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2376         if (!mcast_skb)
2377                 return;
2378
2379         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2380                            HWSIM_CMD_NEW_RADIO);
2381         if (!data)
2382                 goto out_err;
2383
2384         if (append_radio_msg(mcast_skb, id, param) < 0)
2385                 goto out_err;
2386
2387         genlmsg_end(mcast_skb, data);
2388
2389         hwsim_mcast_config_msg(mcast_skb, info);
2390         return;
2391
2392 out_err:
2393         genlmsg_cancel(mcast_skb, data);
2394         nlmsg_free(mcast_skb);
2395 }
2396
2397 static int mac80211_hwsim_new_radio(struct genl_info *info,
2398                                     struct hwsim_new_radio_params *param)
2399 {
2400         int err;
2401         u8 addr[ETH_ALEN];
2402         struct mac80211_hwsim_data *data;
2403         struct ieee80211_hw *hw;
2404         enum nl80211_band band;
2405         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2406         struct net *net;
2407         int idx;
2408
2409         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2410                 return -EINVAL;
2411
2412         spin_lock_bh(&hwsim_radio_lock);
2413         idx = hwsim_radio_idx++;
2414         spin_unlock_bh(&hwsim_radio_lock);
2415
2416         if (param->use_chanctx)
2417                 ops = &mac80211_hwsim_mchan_ops;
2418         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2419         if (!hw) {
2420                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2421                 err = -ENOMEM;
2422                 goto failed;
2423         }
2424
2425         if (info)
2426                 net = genl_info_net(info);
2427         else
2428                 net = &init_net;
2429         wiphy_net_set(hw->wiphy, net);
2430
2431         data = hw->priv;
2432         data->hw = hw;
2433
2434         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2435         if (IS_ERR(data->dev)) {
2436                 printk(KERN_DEBUG
2437                        "mac80211_hwsim: device_create failed (%ld)\n",
2438                        PTR_ERR(data->dev));
2439                 err = -ENOMEM;
2440                 goto failed_drvdata;
2441         }
2442         data->dev->driver = &mac80211_hwsim_driver.driver;
2443         err = device_bind_driver(data->dev);
2444         if (err != 0) {
2445                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2446                        err);
2447                 goto failed_bind;
2448         }
2449
2450         skb_queue_head_init(&data->pending);
2451
2452         SET_IEEE80211_DEV(hw, data->dev);
2453         eth_zero_addr(addr);
2454         addr[0] = 0x02;
2455         addr[3] = idx >> 8;
2456         addr[4] = idx;
2457         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2458         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2459         data->addresses[1].addr[0] |= 0x40;
2460         hw->wiphy->n_addresses = 2;
2461         hw->wiphy->addresses = data->addresses;
2462
2463         data->channels = param->channels;
2464         data->use_chanctx = param->use_chanctx;
2465         data->idx = idx;
2466         data->destroy_on_close = param->destroy_on_close;
2467         if (info)
2468                 data->portid = info->snd_portid;
2469
2470         if (data->use_chanctx) {
2471                 hw->wiphy->max_scan_ssids = 255;
2472                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2473                 hw->wiphy->max_remain_on_channel_duration = 1000;
2474                 hw->wiphy->iface_combinations = &data->if_combination;
2475                 if (param->p2p_device)
2476                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2477                 else
2478                         data->if_combination = hwsim_if_comb[0];
2479                 hw->wiphy->n_iface_combinations = 1;
2480                 /* For channels > 1 DFS is not allowed */
2481                 data->if_combination.radar_detect_widths = 0;
2482                 data->if_combination.num_different_channels = data->channels;
2483         } else if (param->p2p_device) {
2484                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2485                 hw->wiphy->n_iface_combinations =
2486                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2487         } else {
2488                 hw->wiphy->iface_combinations = hwsim_if_comb;
2489                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2490         }
2491
2492         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2493         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2494         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2495
2496         hw->queues = 5;
2497         hw->offchannel_tx_hw_queue = 4;
2498         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2499                                      BIT(NL80211_IFTYPE_AP) |
2500                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2501                                      BIT(NL80211_IFTYPE_P2P_GO) |
2502                                      BIT(NL80211_IFTYPE_ADHOC) |
2503                                      BIT(NL80211_IFTYPE_MESH_POINT);
2504
2505         if (param->p2p_device)
2506                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2507
2508         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2509         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2510         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2511         ieee80211_hw_set(hw, QUEUE_CONTROL);
2512         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2513         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2514         ieee80211_hw_set(hw, MFP_CAPABLE);
2515         ieee80211_hw_set(hw, SIGNAL_DBM);
2516         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2517         if (rctbl)
2518                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2519
2520         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2521                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2522                             WIPHY_FLAG_AP_UAPSD |
2523                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2524         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2525                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2526                                NL80211_FEATURE_STATIC_SMPS |
2527                                NL80211_FEATURE_DYNAMIC_SMPS |
2528                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2529         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2530
2531         /* ask mac80211 to reserve space for magic */
2532         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2533         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2534         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2535
2536         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2537                 sizeof(hwsim_channels_2ghz));
2538         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2539                 sizeof(hwsim_channels_5ghz));
2540         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2541
2542         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2543                 struct ieee80211_supported_band *sband = &data->bands[band];
2544                 switch (band) {
2545                 case NL80211_BAND_2GHZ:
2546                         sband->channels = data->channels_2ghz;
2547                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2548                         sband->bitrates = data->rates;
2549                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2550                         break;
2551                 case NL80211_BAND_5GHZ:
2552                         sband->channels = data->channels_5ghz;
2553                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2554                         sband->bitrates = data->rates + 4;
2555                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2556
2557                         sband->vht_cap.vht_supported = true;
2558                         sband->vht_cap.cap =
2559                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2560                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2561                                 IEEE80211_VHT_CAP_RXLDPC |
2562                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2563                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2564                                 IEEE80211_VHT_CAP_TXSTBC |
2565                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2566                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2567                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2568                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2569                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2570                         sband->vht_cap.vht_mcs.rx_mcs_map =
2571                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2572                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2573                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2574                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2575                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2576                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2577                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2578                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2579                         sband->vht_cap.vht_mcs.tx_mcs_map =
2580                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2581                         break;
2582                 default:
2583                         continue;
2584                 }
2585
2586                 sband->ht_cap.ht_supported = true;
2587                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2588                                     IEEE80211_HT_CAP_GRN_FLD |
2589                                     IEEE80211_HT_CAP_SGI_20 |
2590                                     IEEE80211_HT_CAP_SGI_40 |
2591                                     IEEE80211_HT_CAP_DSSSCCK40;
2592                 sband->ht_cap.ampdu_factor = 0x3;
2593                 sband->ht_cap.ampdu_density = 0x6;
2594                 memset(&sband->ht_cap.mcs, 0,
2595                        sizeof(sband->ht_cap.mcs));
2596                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2597                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2598                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2599
2600                 hw->wiphy->bands[band] = sband;
2601         }
2602
2603         /* By default all radios belong to the first group */
2604         data->group = 1;
2605         mutex_init(&data->mutex);
2606
2607         data->netgroup = hwsim_net_get_netgroup(net);
2608
2609         /* Enable frame retransmissions for lossy channels */
2610         hw->max_rates = 4;
2611         hw->max_rate_tries = 11;
2612
2613         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2614         hw->wiphy->n_vendor_commands =
2615                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2616         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2617         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2618
2619         if (param->reg_strict)
2620                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2621         if (param->regd) {
2622                 data->regd = param->regd;
2623                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2624                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2625                 /* give the regulatory workqueue a chance to run */
2626                 schedule_timeout_interruptible(1);
2627         }
2628
2629         if (param->no_vif)
2630                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2631
2632         err = ieee80211_register_hw(hw);
2633         if (err < 0) {
2634                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2635                        err);
2636                 goto failed_hw;
2637         }
2638
2639         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2640
2641         if (param->reg_alpha2) {
2642                 data->alpha2[0] = param->reg_alpha2[0];
2643                 data->alpha2[1] = param->reg_alpha2[1];
2644                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2645         }
2646
2647         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2648         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2649         debugfs_create_file("group", 0666, data->debugfs, data,
2650                             &hwsim_fops_group);
2651         if (!data->use_chanctx)
2652                 debugfs_create_file("dfs_simulate_radar", 0222,
2653                                     data->debugfs,
2654                                     data, &hwsim_simulate_radar);
2655
2656         tasklet_hrtimer_init(&data->beacon_timer,
2657                              mac80211_hwsim_beacon,
2658                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2659
2660         spin_lock_bh(&hwsim_radio_lock);
2661         list_add_tail(&data->list, &hwsim_radios);
2662         spin_unlock_bh(&hwsim_radio_lock);
2663
2664         if (idx > 0)
2665                 hwsim_mcast_new_radio(idx, info, param);
2666
2667         return idx;
2668
2669 failed_hw:
2670         device_release_driver(data->dev);
2671 failed_bind:
2672         device_unregister(data->dev);
2673 failed_drvdata:
2674         ieee80211_free_hw(hw);
2675 failed:
2676         return err;
2677 }
2678
2679 static void hwsim_mcast_del_radio(int id, const char *hwname,
2680                                   struct genl_info *info)
2681 {
2682         struct sk_buff *skb;
2683         void *data;
2684         int ret;
2685
2686         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2687         if (!skb)
2688                 return;
2689
2690         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2691                            HWSIM_CMD_DEL_RADIO);
2692         if (!data)
2693                 goto error;
2694
2695         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2696         if (ret < 0)
2697                 goto error;
2698
2699         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2700                       hwname);
2701         if (ret < 0)
2702                 goto error;
2703
2704         genlmsg_end(skb, data);
2705
2706         hwsim_mcast_config_msg(skb, info);
2707
2708         return;
2709
2710 error:
2711         nlmsg_free(skb);
2712 }
2713
2714 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2715                                      const char *hwname,
2716                                      struct genl_info *info)
2717 {
2718         hwsim_mcast_del_radio(data->idx, hwname, info);
2719         debugfs_remove_recursive(data->debugfs);
2720         ieee80211_unregister_hw(data->hw);
2721         device_release_driver(data->dev);
2722         device_unregister(data->dev);
2723         ieee80211_free_hw(data->hw);
2724 }
2725
2726 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2727                                     struct mac80211_hwsim_data *data,
2728                                     u32 portid, u32 seq,
2729                                     struct netlink_callback *cb, int flags)
2730 {
2731         void *hdr;
2732         struct hwsim_new_radio_params param = { };
2733         int res = -EMSGSIZE;
2734
2735         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2736                           HWSIM_CMD_GET_RADIO);
2737         if (!hdr)
2738                 return -EMSGSIZE;
2739
2740         if (cb)
2741                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2742
2743         if (data->alpha2[0] && data->alpha2[1])
2744                 param.reg_alpha2 = data->alpha2;
2745
2746         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2747                                         REGULATORY_STRICT_REG);
2748         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2749                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2750         param.use_chanctx = data->use_chanctx;
2751         param.regd = data->regd;
2752         param.channels = data->channels;
2753         param.hwname = wiphy_name(data->hw->wiphy);
2754
2755         res = append_radio_msg(skb, data->idx, &param);
2756         if (res < 0)
2757                 goto out_err;
2758
2759         genlmsg_end(skb, hdr);
2760         return 0;
2761
2762 out_err:
2763         genlmsg_cancel(skb, hdr);
2764         return res;
2765 }
2766
2767 static void mac80211_hwsim_free(void)
2768 {
2769         struct mac80211_hwsim_data *data;
2770
2771         spin_lock_bh(&hwsim_radio_lock);
2772         while ((data = list_first_entry_or_null(&hwsim_radios,
2773                                                 struct mac80211_hwsim_data,
2774                                                 list))) {
2775                 list_del(&data->list);
2776                 spin_unlock_bh(&hwsim_radio_lock);
2777                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2778                                          NULL);
2779                 spin_lock_bh(&hwsim_radio_lock);
2780         }
2781         spin_unlock_bh(&hwsim_radio_lock);
2782         class_destroy(hwsim_class);
2783 }
2784
2785 static const struct net_device_ops hwsim_netdev_ops = {
2786         .ndo_start_xmit         = hwsim_mon_xmit,
2787         .ndo_change_mtu         = eth_change_mtu,
2788         .ndo_set_mac_address    = eth_mac_addr,
2789         .ndo_validate_addr      = eth_validate_addr,
2790 };
2791
2792 static void hwsim_mon_setup(struct net_device *dev)
2793 {
2794         dev->netdev_ops = &hwsim_netdev_ops;
2795         dev->destructor = free_netdev;
2796         ether_setup(dev);
2797         dev->priv_flags |= IFF_NO_QUEUE;
2798         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2799         eth_zero_addr(dev->dev_addr);
2800         dev->dev_addr[0] = 0x12;
2801 }
2802
2803 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2804 {
2805         struct mac80211_hwsim_data *data;
2806         bool _found = false;
2807
2808         spin_lock_bh(&hwsim_radio_lock);
2809         list_for_each_entry(data, &hwsim_radios, list) {
2810                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2811                         _found = true;
2812                         break;
2813                 }
2814         }
2815         spin_unlock_bh(&hwsim_radio_lock);
2816
2817         if (!_found)
2818                 return NULL;
2819
2820         return data;
2821 }
2822
2823 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2824 {
2825         struct mac80211_hwsim_data *data;
2826
2827         hwsim_net_set_wmediumd(net, portid);
2828
2829         spin_lock_bh(&hwsim_radio_lock);
2830         list_for_each_entry(data, &hwsim_radios, list) {
2831                 if (data->netgroup == hwsim_net_get_netgroup(net))
2832                         data->wmediumd = portid;
2833         }
2834         spin_unlock_bh(&hwsim_radio_lock);
2835 }
2836
2837 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2838                                            struct genl_info *info)
2839 {
2840
2841         struct ieee80211_hdr *hdr;
2842         struct mac80211_hwsim_data *data2;
2843         struct ieee80211_tx_info *txi;
2844         struct hwsim_tx_rate *tx_attempts;
2845         u64 ret_skb_cookie;
2846         struct sk_buff *skb, *tmp;
2847         const u8 *src;
2848         unsigned int hwsim_flags;
2849         int i;
2850         bool found = false;
2851
2852         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2853             !info->attrs[HWSIM_ATTR_FLAGS] ||
2854             !info->attrs[HWSIM_ATTR_COOKIE] ||
2855             !info->attrs[HWSIM_ATTR_SIGNAL] ||
2856             !info->attrs[HWSIM_ATTR_TX_INFO])
2857                 goto out;
2858
2859         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2860         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2861         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2862
2863         data2 = get_hwsim_data_ref_from_addr(src);
2864         if (!data2)
2865                 goto out;
2866
2867         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2868                 goto out;
2869
2870         if (info->snd_portid != data2->wmediumd)
2871                 goto out;
2872
2873         /* look for the skb matching the cookie passed back from user */
2874         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2875                 u64 skb_cookie;
2876
2877                 txi = IEEE80211_SKB_CB(skb);
2878                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2879
2880                 if (skb_cookie == ret_skb_cookie) {
2881                         skb_unlink(skb, &data2->pending);
2882                         found = true;
2883                         break;
2884                 }
2885         }
2886
2887         /* not found */
2888         if (!found)
2889                 goto out;
2890
2891         /* Tx info received because the frame was broadcasted on user space,
2892          so we get all the necessary info: tx attempts and skb control buff */
2893
2894         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2895                        info->attrs[HWSIM_ATTR_TX_INFO]);
2896
2897         /* now send back TX status */
2898         txi = IEEE80211_SKB_CB(skb);
2899
2900         ieee80211_tx_info_clear_status(txi);
2901
2902         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2903                 txi->status.rates[i].idx = tx_attempts[i].idx;
2904                 txi->status.rates[i].count = tx_attempts[i].count;
2905                 /*txi->status.rates[i].flags = 0;*/
2906         }
2907
2908         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2909
2910         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2911            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2912                 if (skb->len >= 16) {
2913                         hdr = (struct ieee80211_hdr *) skb->data;
2914                         mac80211_hwsim_monitor_ack(data2->channel,
2915                                                    hdr->addr2);
2916                 }
2917                 txi->flags |= IEEE80211_TX_STAT_ACK;
2918         }
2919         ieee80211_tx_status_irqsafe(data2->hw, skb);
2920         return 0;
2921 out:
2922         return -EINVAL;
2923
2924 }
2925
2926 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2927                                           struct genl_info *info)
2928 {
2929         struct mac80211_hwsim_data *data2;
2930         struct ieee80211_rx_status rx_status;
2931         const u8 *dst;
2932         int frame_data_len;
2933         void *frame_data;
2934         struct sk_buff *skb = NULL;
2935
2936         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2937             !info->attrs[HWSIM_ATTR_FRAME] ||
2938             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2939             !info->attrs[HWSIM_ATTR_SIGNAL])
2940                 goto out;
2941
2942         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2943         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2944         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2945
2946         /* Allocate new skb here */
2947         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2948         if (skb == NULL)
2949                 goto err;
2950
2951         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2952                 goto err;
2953
2954         /* Copy the data */
2955         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2956
2957         data2 = get_hwsim_data_ref_from_addr(dst);
2958         if (!data2)
2959                 goto out;
2960
2961         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2962                 goto out;
2963
2964         if (info->snd_portid != data2->wmediumd)
2965                 goto out;
2966
2967         /* check if radio is configured properly */
2968
2969         if (data2->idle || !data2->started)
2970                 goto out;
2971
2972         /* A frame is received from user space */
2973         memset(&rx_status, 0, sizeof(rx_status));
2974         if (info->attrs[HWSIM_ATTR_FREQ]) {
2975                 /* throw away off-channel packets, but allow both the temporary
2976                  * ("hw" scan/remain-on-channel) and regular channel, since the
2977                  * internal datapath also allows this
2978                  */
2979                 mutex_lock(&data2->mutex);
2980                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2981
2982                 if (rx_status.freq != data2->channel->center_freq &&
2983                     (!data2->tmp_chan ||
2984                      rx_status.freq != data2->tmp_chan->center_freq)) {
2985                         mutex_unlock(&data2->mutex);
2986                         goto out;
2987                 }
2988                 mutex_unlock(&data2->mutex);
2989         } else {
2990                 rx_status.freq = data2->channel->center_freq;
2991         }
2992
2993         rx_status.band = data2->channel->band;
2994         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2995         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2996
2997         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2998         data2->rx_pkts++;
2999         data2->rx_bytes += skb->len;
3000         ieee80211_rx_irqsafe(data2->hw, skb);
3001
3002         return 0;
3003 err:
3004         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3005 out:
3006         dev_kfree_skb(skb);
3007         return -EINVAL;
3008 }
3009
3010 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3011                                       struct genl_info *info)
3012 {
3013         struct net *net = genl_info_net(info);
3014         struct mac80211_hwsim_data *data;
3015         int chans = 1;
3016
3017         spin_lock_bh(&hwsim_radio_lock);
3018         list_for_each_entry(data, &hwsim_radios, list)
3019                 chans = max(chans, data->channels);
3020         spin_unlock_bh(&hwsim_radio_lock);
3021
3022         /* In the future we should revise the userspace API and allow it
3023          * to set a flag that it does support multi-channel, then we can
3024          * let this pass conditionally on the flag.
3025          * For current userspace, prohibit it since it won't work right.
3026          */
3027         if (chans > 1)
3028                 return -EOPNOTSUPP;
3029
3030         if (hwsim_net_get_wmediumd(net))
3031                 return -EBUSY;
3032
3033         hwsim_register_wmediumd(net, info->snd_portid);
3034
3035         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3036                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3037
3038         return 0;
3039 }
3040
3041 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3042 {
3043         struct hwsim_new_radio_params param = { 0 };
3044
3045         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3046         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3047         param.channels = channels;
3048         param.destroy_on_close =
3049                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3050
3051         if (info->attrs[HWSIM_ATTR_CHANNELS])
3052                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3053
3054         if (info->attrs[HWSIM_ATTR_NO_VIF])
3055                 param.no_vif = true;
3056
3057         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3058                 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3059
3060         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3061                 param.use_chanctx = true;
3062         else
3063                 param.use_chanctx = (param.channels > 1);
3064
3065         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3066                 param.reg_alpha2 =
3067                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3068
3069         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3070                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3071
3072                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3073                         return -EINVAL;
3074                 param.regd = hwsim_world_regdom_custom[idx];
3075         }
3076
3077         return mac80211_hwsim_new_radio(info, &param);
3078 }
3079
3080 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3081 {
3082         struct mac80211_hwsim_data *data;
3083         s64 idx = -1;
3084         const char *hwname = NULL;
3085
3086         if (info->attrs[HWSIM_ATTR_RADIO_ID])
3087                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3088         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3089                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3090         else
3091                 return -EINVAL;
3092
3093         spin_lock_bh(&hwsim_radio_lock);
3094         list_for_each_entry(data, &hwsim_radios, list) {
3095                 if (idx >= 0) {
3096                         if (data->idx != idx)
3097                                 continue;
3098                 } else {
3099                         if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3100                                 continue;
3101                 }
3102
3103                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3104                         continue;
3105
3106                 list_del(&data->list);
3107                 spin_unlock_bh(&hwsim_radio_lock);
3108                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3109                                          info);
3110                 return 0;
3111         }
3112         spin_unlock_bh(&hwsim_radio_lock);
3113
3114         return -ENODEV;
3115 }
3116
3117 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3118 {
3119         struct mac80211_hwsim_data *data;
3120         struct sk_buff *skb;
3121         int idx, res = -ENODEV;
3122
3123         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3124                 return -EINVAL;
3125         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3126
3127         spin_lock_bh(&hwsim_radio_lock);
3128         list_for_each_entry(data, &hwsim_radios, list) {
3129                 if (data->idx != idx)
3130                         continue;
3131
3132                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3133                         continue;
3134
3135                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3136                 if (!skb) {
3137                         res = -ENOMEM;
3138                         goto out_err;
3139                 }
3140
3141                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3142                                                info->snd_seq, NULL, 0);
3143                 if (res < 0) {
3144                         nlmsg_free(skb);
3145                         goto out_err;
3146                 }
3147
3148                 genlmsg_reply(skb, info);
3149                 break;
3150         }
3151
3152 out_err:
3153         spin_unlock_bh(&hwsim_radio_lock);
3154
3155         return res;
3156 }
3157
3158 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3159                                struct netlink_callback *cb)
3160 {
3161         int idx = cb->args[0];
3162         struct mac80211_hwsim_data *data = NULL;
3163         int res;
3164
3165         spin_lock_bh(&hwsim_radio_lock);
3166
3167         if (idx == hwsim_radio_idx)
3168                 goto done;
3169
3170         list_for_each_entry(data, &hwsim_radios, list) {
3171                 if (data->idx < idx)
3172                         continue;
3173
3174                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3175                         continue;
3176
3177                 res = mac80211_hwsim_get_radio(skb, data,
3178                                                NETLINK_CB(cb->skb).portid,
3179                                                cb->nlh->nlmsg_seq, cb,
3180                                                NLM_F_MULTI);
3181                 if (res < 0)
3182                         break;
3183
3184                 idx = data->idx + 1;
3185         }
3186
3187         cb->args[0] = idx;
3188
3189 done:
3190         spin_unlock_bh(&hwsim_radio_lock);
3191         return skb->len;
3192 }
3193
3194 /* Generic Netlink operations array */
3195 static const struct genl_ops hwsim_ops[] = {
3196         {
3197                 .cmd = HWSIM_CMD_REGISTER,
3198                 .policy = hwsim_genl_policy,
3199                 .doit = hwsim_register_received_nl,
3200                 .flags = GENL_UNS_ADMIN_PERM,
3201         },
3202         {
3203                 .cmd = HWSIM_CMD_FRAME,
3204                 .policy = hwsim_genl_policy,
3205                 .doit = hwsim_cloned_frame_received_nl,
3206         },
3207         {
3208                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3209                 .policy = hwsim_genl_policy,
3210                 .doit = hwsim_tx_info_frame_received_nl,
3211         },
3212         {
3213                 .cmd = HWSIM_CMD_NEW_RADIO,
3214                 .policy = hwsim_genl_policy,
3215                 .doit = hwsim_new_radio_nl,
3216                 .flags = GENL_UNS_ADMIN_PERM,
3217         },
3218         {
3219                 .cmd = HWSIM_CMD_DEL_RADIO,
3220                 .policy = hwsim_genl_policy,
3221                 .doit = hwsim_del_radio_nl,
3222                 .flags = GENL_UNS_ADMIN_PERM,
3223         },
3224         {
3225                 .cmd = HWSIM_CMD_GET_RADIO,
3226                 .policy = hwsim_genl_policy,
3227                 .doit = hwsim_get_radio_nl,
3228                 .dumpit = hwsim_dump_radio_nl,
3229         },
3230 };
3231
3232 static void destroy_radio(struct work_struct *work)
3233 {
3234         struct mac80211_hwsim_data *data =
3235                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3236
3237         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3238 }
3239
3240 static void remove_user_radios(u32 portid)
3241 {
3242         struct mac80211_hwsim_data *entry, *tmp;
3243
3244         spin_lock_bh(&hwsim_radio_lock);
3245         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3246                 if (entry->destroy_on_close && entry->portid == portid) {
3247                         list_del(&entry->list);
3248                         INIT_WORK(&entry->destroy_work, destroy_radio);
3249                         schedule_work(&entry->destroy_work);
3250                 }
3251         }
3252         spin_unlock_bh(&hwsim_radio_lock);
3253 }
3254
3255 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3256                                          unsigned long state,
3257                                          void *_notify)
3258 {
3259         struct netlink_notify *notify = _notify;
3260
3261         if (state != NETLINK_URELEASE)
3262                 return NOTIFY_DONE;
3263
3264         remove_user_radios(notify->portid);
3265
3266         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3267                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3268                        " socket, switching to perfect channel medium\n");
3269                 hwsim_register_wmediumd(notify->net, 0);
3270         }
3271         return NOTIFY_DONE;
3272
3273 }
3274
3275 static struct notifier_block hwsim_netlink_notifier = {
3276         .notifier_call = mac80211_hwsim_netlink_notify,
3277 };
3278
3279 static int hwsim_init_netlink(void)
3280 {
3281         int rc;
3282
3283         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3284
3285         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3286                                                   hwsim_ops,
3287                                                   hwsim_mcgrps);
3288         if (rc)
3289                 goto failure;
3290
3291         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3292         if (rc) {
3293                 genl_unregister_family(&hwsim_genl_family);
3294                 goto failure;
3295         }
3296
3297         return 0;
3298
3299 failure:
3300         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3301         return -EINVAL;
3302 }
3303
3304 static __net_init int hwsim_init_net(struct net *net)
3305 {
3306         hwsim_net_set_netgroup(net);
3307
3308         return 0;
3309 }
3310
3311 static void __net_exit hwsim_exit_net(struct net *net)
3312 {
3313         struct mac80211_hwsim_data *data, *tmp;
3314
3315         spin_lock_bh(&hwsim_radio_lock);
3316         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3317                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3318                         continue;
3319
3320                 /* Radios created in init_net are returned to init_net. */
3321                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3322                         continue;
3323
3324                 list_del(&data->list);
3325                 INIT_WORK(&data->destroy_work, destroy_radio);
3326                 schedule_work(&data->destroy_work);
3327         }
3328         spin_unlock_bh(&hwsim_radio_lock);
3329 }
3330
3331 static struct pernet_operations hwsim_net_ops = {
3332         .init = hwsim_init_net,
3333         .exit = hwsim_exit_net,
3334         .id   = &hwsim_net_id,
3335         .size = sizeof(struct hwsim_net),
3336 };
3337
3338 static void hwsim_exit_netlink(void)
3339 {
3340         /* unregister the notifier */
3341         netlink_unregister_notifier(&hwsim_netlink_notifier);
3342         /* unregister the family */
3343         genl_unregister_family(&hwsim_genl_family);
3344 }
3345
3346 static int __init init_mac80211_hwsim(void)
3347 {
3348         int i, err;
3349
3350         if (radios < 0 || radios > 100)
3351                 return -EINVAL;
3352
3353         if (channels < 1)
3354                 return -EINVAL;
3355
3356         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3357         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3358         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3359         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3360         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3361         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3362         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3363         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3364         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3365         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3366         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3367                 mac80211_hwsim_assign_vif_chanctx;
3368         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3369                 mac80211_hwsim_unassign_vif_chanctx;
3370
3371         spin_lock_init(&hwsim_radio_lock);
3372         INIT_LIST_HEAD(&hwsim_radios);
3373
3374         err = register_pernet_device(&hwsim_net_ops);
3375         if (err)
3376                 return err;
3377
3378         err = platform_driver_register(&mac80211_hwsim_driver);
3379         if (err)
3380                 goto out_unregister_pernet;
3381
3382         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3383         if (IS_ERR(hwsim_class)) {
3384                 err = PTR_ERR(hwsim_class);
3385                 goto out_unregister_driver;
3386         }
3387
3388         err = hwsim_init_netlink();
3389         if (err < 0)
3390                 goto out_unregister_driver;
3391
3392         for (i = 0; i < radios; i++) {
3393                 struct hwsim_new_radio_params param = { 0 };
3394
3395                 param.channels = channels;
3396
3397                 switch (regtest) {
3398                 case HWSIM_REGTEST_DIFF_COUNTRY:
3399                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3400                                 param.reg_alpha2 = hwsim_alpha2s[i];
3401                         break;
3402                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3403                         if (!i)
3404                                 param.reg_alpha2 = hwsim_alpha2s[0];
3405                         break;
3406                 case HWSIM_REGTEST_STRICT_ALL:
3407                         param.reg_strict = true;
3408                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3409                         param.reg_alpha2 = hwsim_alpha2s[0];
3410                         break;
3411                 case HWSIM_REGTEST_WORLD_ROAM:
3412                         if (i == 0)
3413                                 param.regd = &hwsim_world_regdom_custom_01;
3414                         break;
3415                 case HWSIM_REGTEST_CUSTOM_WORLD:
3416                         param.regd = &hwsim_world_regdom_custom_01;
3417                         break;
3418                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3419                         if (i == 0)
3420                                 param.regd = &hwsim_world_regdom_custom_01;
3421                         else if (i == 1)
3422                                 param.regd = &hwsim_world_regdom_custom_02;
3423                         break;
3424                 case HWSIM_REGTEST_STRICT_FOLLOW:
3425                         if (i == 0) {
3426                                 param.reg_strict = true;
3427                                 param.reg_alpha2 = hwsim_alpha2s[0];
3428                         }
3429                         break;
3430                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3431                         if (i == 0) {
3432                                 param.reg_strict = true;
3433                                 param.reg_alpha2 = hwsim_alpha2s[0];
3434                         } else if (i == 1) {
3435                                 param.reg_alpha2 = hwsim_alpha2s[1];
3436                         }
3437                         break;
3438                 case HWSIM_REGTEST_ALL:
3439                         switch (i) {
3440                         case 0:
3441                                 param.regd = &hwsim_world_regdom_custom_01;
3442                                 break;
3443                         case 1:
3444                                 param.regd = &hwsim_world_regdom_custom_02;
3445                                 break;
3446                         case 2:
3447                                 param.reg_alpha2 = hwsim_alpha2s[0];
3448                                 break;
3449                         case 3:
3450                                 param.reg_alpha2 = hwsim_alpha2s[1];
3451                                 break;
3452                         case 4:
3453                                 param.reg_strict = true;
3454                                 param.reg_alpha2 = hwsim_alpha2s[2];
3455                                 break;
3456                         }
3457                         break;
3458                 default:
3459                         break;
3460                 }
3461
3462                 param.p2p_device = support_p2p_device;
3463                 param.use_chanctx = channels > 1;
3464
3465                 err = mac80211_hwsim_new_radio(NULL, &param);
3466                 if (err < 0)
3467                         goto out_free_radios;
3468         }
3469
3470         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3471                                  hwsim_mon_setup);
3472         if (hwsim_mon == NULL) {
3473                 err = -ENOMEM;
3474                 goto out_free_radios;
3475         }
3476
3477         rtnl_lock();
3478         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3479         if (err < 0) {
3480                 rtnl_unlock();
3481                 goto out_free_radios;
3482         }
3483
3484         err = register_netdevice(hwsim_mon);
3485         if (err < 0) {
3486                 rtnl_unlock();
3487                 goto out_free_mon;
3488         }
3489         rtnl_unlock();
3490
3491         return 0;
3492
3493 out_free_mon:
3494         free_netdev(hwsim_mon);
3495 out_free_radios:
3496         mac80211_hwsim_free();
3497 out_unregister_driver:
3498         platform_driver_unregister(&mac80211_hwsim_driver);
3499 out_unregister_pernet:
3500         unregister_pernet_device(&hwsim_net_ops);
3501         return err;
3502 }
3503 module_init(init_mac80211_hwsim);
3504
3505 static void __exit exit_mac80211_hwsim(void)
3506 {
3507         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3508
3509         hwsim_exit_netlink();
3510
3511         mac80211_hwsim_free();
3512         unregister_netdev(hwsim_mon);
3513         platform_driver_unregister(&mac80211_hwsim_driver);
3514         unregister_pernet_device(&hwsim_net_ops);
3515 }
3516 module_exit(exit_mac80211_hwsim);