drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include <net/net_namespace.h>
  34 #include <net/netns/generic.h>
  35 #include "mac80211_hwsim.h"
  36
  37 #define WARN_QUEUE 100
  38 #define MAX_QUEUE 200
  39
  40 MODULE_AUTHOR("Jouni Malinen");
  41 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  42 MODULE_LICENSE("GPL");
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 static bool support_p2p_device = true;
  61 module_param(support_p2p_device, bool, 0444);
  62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  63
  64 /**
  65  * enum hwsim_regtest - the type of regulatory tests we offer
  66  *
  67  * These are the different values you can use for the regtest
  68  * module parameter. This is useful to help test world roaming
  69  * and the driver regulatory_hint() call and combinations of these.
  70  * If you want to do specific alpha2 regulatory domain tests simply
  71  * use the userspace regulatory request as that will be respected as
  72  * well without the need of this module parameter. This is designed
  73  * only for testing the driver regulatory request, world roaming
  74  * and all possible combinations.
  75  *
  76  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  77  *      this is the default value.
  78  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  79  *      hint, only one driver regulatory hint will be sent as such the
  80  *      secondary radios are expected to follow.
  81  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  82  *      request with all radios reporting the same regulatory domain.
  83  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  84  *      different regulatory domains requests. Expected behaviour is for
  85  *      an intersection to occur but each device will still use their
  86  *      respective regulatory requested domains. Subsequent radios will
  87  *      use the resulting intersection.
  88  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  89  *      this by using a custom beacon-capable regulatory domain for the first
  90  *      radio. All other device world roam.
  91  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  92  *      domain requests. All radios will adhere to this custom world regulatory
  93  *      domain.
  94  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  95  *      domain requests. The first radio will adhere to the first custom world
  96  *      regulatory domain, the second one to the second custom world regulatory
  97  *      domain. All other devices will world roam.
  98  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  99  *      settings, only the first radio will send a regulatory domain request
 100  *      and use strict settings. The rest of the radios are expected to follow.
 101  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 102  *      settings. All radios will adhere to this.
 103  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 104  *      domain settings, combined with secondary driver regulatory domain
 105  *      settings. The first radio will get a strict regulatory domain setting
 106  *      using the first driver regulatory request and the second radio will use
 107  *      non-strict settings using the second driver regulatory request. All
 108  *      other devices should follow the intersection created between the
 109  *      first two.
 110  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 111  *      at least 6 radios for a complete test. We will test in this order:
 112  *      1 - driver custom world regulatory domain
 113  *      2 - second custom world regulatory domain
 114  *      3 - first driver regulatory domain request
 115  *      4 - second driver regulatory domain request
 116  *      5 - strict regulatory domain settings using the third driver regulatory
 117  *          domain request
 118  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 119  *                 regulatory requests.
 120  */
 121 enum hwsim_regtest {
 122         HWSIM_REGTEST_DISABLED = 0,
 123         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 124         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 125         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 126         HWSIM_REGTEST_WORLD_ROAM = 4,
 127         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 128         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 129         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 130         HWSIM_REGTEST_STRICT_ALL = 8,
 131         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 132         HWSIM_REGTEST_ALL = 10,
 133 };
 134
 135 /* Set to one of the HWSIM_REGTEST_* values above */
 136 static int regtest = HWSIM_REGTEST_DISABLED;
 137 module_param(regtest, int, 0444);
 138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 139
 140 static const char *hwsim_alpha2s[] = {
 141         "FI",
 142         "AL",
 143         "US",
 144         "DE",
 145         "JP",
 146         "AL",
 147 };
 148
 149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 150         .n_reg_rules = 4,
 151         .alpha2 =  "99",
 152         .reg_rules = {
 153                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 154                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 155                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 156                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 157         }
 158 };
 159
 160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 161         .n_reg_rules = 2,
 162         .alpha2 =  "99",
 163         .reg_rules = {
 164                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 165                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 166                          NL80211_RRF_NO_IR),
 167         }
 168 };
 169
 170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 171         &hwsim_world_regdom_custom_01,
 172         &hwsim_world_regdom_custom_02,
 173 };
 174
 175 struct hwsim_vif_priv {
 176         u32 magic;
 177         u8 bssid[ETH_ALEN];
 178         bool assoc;
 179         bool bcn_en;
 180         u16 aid;
 181 };
 182
 183 #define HWSIM_VIF_MAGIC 0x69537748
 184
 185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 186 {
 187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 188         WARN(vp->magic != HWSIM_VIF_MAGIC,
 189              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 190              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 191 }
 192
 193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 194 {
 195         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 196         vp->magic = HWSIM_VIF_MAGIC;
 197 }
 198
 199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = 0;
 203 }
 204
 205 struct hwsim_sta_priv {
 206         u32 magic;
 207 };
 208
 209 #define HWSIM_STA_MAGIC 0x6d537749
 210
 211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 212 {
 213         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 214         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 215 }
 216
 217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         sp->magic = HWSIM_STA_MAGIC;
 221 }
 222
 223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = 0;
 227 }
 228
 229 struct hwsim_chanctx_priv {
 230         u32 magic;
 231 };
 232
 233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 234
 235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 236 {
 237         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 238         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 239 }
 240
 241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         cp->magic = HWSIM_CHANCTX_MAGIC;
 245 }
 246
 247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = 0;
 251 }
 252
 253 static int hwsim_net_id;
 254
 255 static int hwsim_netgroup;
 256
 257 struct hwsim_net {
 258         int netgroup;
 259         u32 wmediumd;
 260 };
 261
 262 static inline int hwsim_net_get_netgroup(struct net *net)
 263 {
 264         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 265
 266         return hwsim_net->netgroup;
 267 }
 268
 269 static inline void hwsim_net_set_netgroup(struct net *net)
 270 {
 271         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 272
 273         hwsim_net->netgroup = hwsim_netgroup++;
 274 }
 275
 276 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 277 {
 278         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 279
 280         return hwsim_net->wmediumd;
 281 }
 282
 283 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 284 {
 285         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 286
 287         hwsim_net->wmediumd = portid;
 288 }
 289
 290 static struct class *hwsim_class;
 291
 292 static struct net_device *hwsim_mon; /* global monitor netdev */
 293
 294 #define CHAN2G(_freq)  { \
 295         .band = NL80211_BAND_2GHZ, \
 296         .center_freq = (_freq), \
 297         .hw_value = (_freq), \
 298         .max_power = 20, \
 299 }
 300
 301 #define CHAN5G(_freq) { \
 302         .band = NL80211_BAND_5GHZ, \
 303         .center_freq = (_freq), \
 304         .hw_value = (_freq), \
 305         .max_power = 20, \
 306 }
 307
 308 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 309         CHAN2G(2412), /* Channel 1 */
 310         CHAN2G(2417), /* Channel 2 */
 311         CHAN2G(2422), /* Channel 3 */
 312         CHAN2G(2427), /* Channel 4 */
 313         CHAN2G(2432), /* Channel 5 */
 314         CHAN2G(2437), /* Channel 6 */
 315         CHAN2G(2442), /* Channel 7 */
 316         CHAN2G(2447), /* Channel 8 */
 317         CHAN2G(2452), /* Channel 9 */
 318         CHAN2G(2457), /* Channel 10 */
 319         CHAN2G(2462), /* Channel 11 */
 320         CHAN2G(2467), /* Channel 12 */
 321         CHAN2G(2472), /* Channel 13 */
 322         CHAN2G(2484), /* Channel 14 */
 323 };
 324
 325 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 326         CHAN5G(5180), /* Channel 36 */
 327         CHAN5G(5200), /* Channel 40 */
 328         CHAN5G(5220), /* Channel 44 */
 329         CHAN5G(5240), /* Channel 48 */
 330
 331         CHAN5G(5260), /* Channel 52 */
 332         CHAN5G(5280), /* Channel 56 */
 333         CHAN5G(5300), /* Channel 60 */
 334         CHAN5G(5320), /* Channel 64 */
 335
 336         CHAN5G(5500), /* Channel 100 */
 337         CHAN5G(5520), /* Channel 104 */
 338         CHAN5G(5540), /* Channel 108 */
 339         CHAN5G(5560), /* Channel 112 */
 340         CHAN5G(5580), /* Channel 116 */
 341         CHAN5G(5600), /* Channel 120 */
 342         CHAN5G(5620), /* Channel 124 */
 343         CHAN5G(5640), /* Channel 128 */
 344         CHAN5G(5660), /* Channel 132 */
 345         CHAN5G(5680), /* Channel 136 */
 346         CHAN5G(5700), /* Channel 140 */
 347
 348         CHAN5G(5745), /* Channel 149 */
 349         CHAN5G(5765), /* Channel 153 */
 350         CHAN5G(5785), /* Channel 157 */
 351         CHAN5G(5805), /* Channel 161 */
 352         CHAN5G(5825), /* Channel 165 */
 353 };
 354
 355 static const struct ieee80211_rate hwsim_rates[] = {
 356         { .bitrate = 10 },
 357         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 358         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 359         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 360         { .bitrate = 60 },
 361         { .bitrate = 90 },
 362         { .bitrate = 120 },
 363         { .bitrate = 180 },
 364         { .bitrate = 240 },
 365         { .bitrate = 360 },
 366         { .bitrate = 480 },
 367         { .bitrate = 540 }
 368 };
 369
 370 #define OUI_QCA 0x001374
 371 #define QCA_NL80211_SUBCMD_TEST 1
 372 enum qca_nl80211_vendor_subcmds {
 373         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 374         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 375 };
 376
 377 static const struct nla_policy
 378 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 379         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 380 };
 381
 382 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 383                                           struct wireless_dev *wdev,
 384                                           const void *data, int data_len)
 385 {
 386         struct sk_buff *skb;
 387         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 388         int err;
 389         u32 val;
 390
 391         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
 392                         hwsim_vendor_test_policy);
 393         if (err)
 394                 return err;
 395         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 396                 return -EINVAL;
 397         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 398         wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
 399
 400         /* Send a vendor event as a test. Note that this would not normally be
 401          * done within a command handler, but rather, based on some other
 402          * trigger. For simplicity, this command is used to trigger the event
 403          * here.
 404          *
 405          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 406          */
 407         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 408         if (skb) {
 409                 /* skb_put() or nla_put() will fill up data within
 410                  * NL80211_ATTR_VENDOR_DATA.
 411                  */
 412
 413                 /* Add vendor data */
 414                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 415
 416                 /* Send the event - this will call nla_nest_end() */
 417                 cfg80211_vendor_event(skb, GFP_KERNEL);
 418         }
 419
 420         /* Send a response to the command */
 421         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 422         if (!skb)
 423                 return -ENOMEM;
 424
 425         /* skb_put() or nla_put() will fill up data within
 426          * NL80211_ATTR_VENDOR_DATA
 427          */
 428         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 429
 430         return cfg80211_vendor_cmd_reply(skb);
 431 }
 432
 433 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 434         {
 435                 .info = { .vendor_id = OUI_QCA,
 436                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 437                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 438                 .doit = mac80211_hwsim_vendor_cmd_test,
 439         }
 440 };
 441
 442 /* Advertise support vendor specific events */
 443 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 444         { .vendor_id = OUI_QCA, .subcmd = 1 },
 445 };
 446
 447 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 448         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 449         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 450                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 451 #ifdef CONFIG_MAC80211_MESH
 452                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 453 #endif
 454                                  BIT(NL80211_IFTYPE_AP) |
 455                                  BIT(NL80211_IFTYPE_P2P_GO) },
 456         /* must be last, see hwsim_if_comb */
 457         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 458 };
 459
 460 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 461         {
 462                 .limits = hwsim_if_limits,
 463                 /* remove the last entry which is P2P_DEVICE */
 464                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 465                 .max_interfaces = 2048,
 466                 .num_different_channels = 1,
 467                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 468                                        BIT(NL80211_CHAN_WIDTH_20) |
 469                                        BIT(NL80211_CHAN_WIDTH_40) |
 470                                        BIT(NL80211_CHAN_WIDTH_80) |
 471                                        BIT(NL80211_CHAN_WIDTH_160),
 472         },
 473 };
 474
 475 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 476         {
 477                 .limits = hwsim_if_limits,
 478                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 479                 .max_interfaces = 2048,
 480                 .num_different_channels = 1,
 481                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 482                                        BIT(NL80211_CHAN_WIDTH_20) |
 483                                        BIT(NL80211_CHAN_WIDTH_40) |
 484                                        BIT(NL80211_CHAN_WIDTH_80) |
 485                                        BIT(NL80211_CHAN_WIDTH_160),
 486         },
 487 };
 488
 489 static spinlock_t hwsim_radio_lock;
 490 static LIST_HEAD(hwsim_radios);
 491 static int hwsim_radio_idx;
 492
 493 static struct platform_driver mac80211_hwsim_driver = {
 494         .driver = {
 495                 .name = "mac80211_hwsim",
 496         },
 497 };
 498
 499 struct mac80211_hwsim_data {
 500         struct list_head list;
 501         struct ieee80211_hw *hw;
 502         struct device *dev;
 503         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 504         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 505         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 506         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 507         struct ieee80211_iface_combination if_combination;
 508
 509         struct mac_address addresses[2];
 510         int channels, idx;
 511         bool use_chanctx;
 512         bool destroy_on_close;
 513         struct work_struct destroy_work;
 514         u32 portid;
 515         char alpha2[2];
 516         const struct ieee80211_regdomain *regd;
 517
 518         struct ieee80211_channel *tmp_chan;
 519         struct ieee80211_channel *roc_chan;
 520         u32 roc_duration;
 521         struct delayed_work roc_start;
 522         struct delayed_work roc_done;
 523         struct delayed_work hw_scan;
 524         struct cfg80211_scan_request *hw_scan_request;
 525         struct ieee80211_vif *hw_scan_vif;
 526         int scan_chan_idx;
 527         u8 scan_addr[ETH_ALEN];
 528
 529         struct ieee80211_channel *channel;
 530         u64 beacon_int  /* beacon interval in us */;
 531         unsigned int rx_filter;
 532         bool started, idle, scanning;
 533         struct mutex mutex;
 534         struct tasklet_hrtimer beacon_timer;
 535         enum ps_mode {
 536                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 537         } ps;
 538         bool ps_poll_pending;
 539         struct dentry *debugfs;
 540
 541         uintptr_t pending_cookie;
 542         struct sk_buff_head pending;    /* packets pending */
 543         /*
 544          * Only radios in the same group can communicate together (the
 545          * channel has to match too). Each bit represents a group. A
 546          * radio can be in more than one group.
 547          */
 548         u64 group;
 549
 550         /* group shared by radios created in the same netns */
 551         int netgroup;
 552         /* wmediumd portid responsible for netgroup of this radio */
 553         u32 wmediumd;
 554
 555         /* difference between this hw's clock and the real clock, in usecs */
 556         s64 tsf_offset;
 557         s64 bcn_delta;
 558         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 559         u64 abs_bcn_ts;
 560
 561         /* Stats */
 562         u64 tx_pkts;
 563         u64 rx_pkts;
 564         u64 tx_bytes;
 565         u64 rx_bytes;
 566         u64 tx_dropped;
 567         u64 tx_failed;
 568 };
 569
 570
 571 struct hwsim_radiotap_hdr {
 572         struct ieee80211_radiotap_header hdr;
 573         __le64 rt_tsft;
 574         u8 rt_flags;
 575         u8 rt_rate;
 576         __le16 rt_channel;
 577         __le16 rt_chbitmask;
 578 } __packed;
 579
 580 struct hwsim_radiotap_ack_hdr {
 581         struct ieee80211_radiotap_header hdr;
 582         u8 rt_flags;
 583         u8 pad;
 584         __le16 rt_channel;
 585         __le16 rt_chbitmask;
 586 } __packed;
 587
 588 /* MAC80211_HWSIM netlinf family */
 589 static struct genl_family hwsim_genl_family = {
 590         .id = GENL_ID_GENERATE,
 591         .hdrsize = 0,
 592         .name = "MAC80211_HWSIM",
 593         .version = 1,
 594         .maxattr = HWSIM_ATTR_MAX,
 595         .netnsok = true,
 596 };
 597
 598 enum hwsim_multicast_groups {
 599         HWSIM_MCGRP_CONFIG,
 600 };
 601
 602 static const struct genl_multicast_group hwsim_mcgrps[] = {
 603         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 604 };
 605
 606 /* MAC80211_HWSIM netlink policy */
 607
 608 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 609         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 610         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 611         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 612                                .len = IEEE80211_MAX_DATA_LEN },
 613         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 614         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 615         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 616         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 617                                  .len = IEEE80211_TX_MAX_RATES *
 618                                         sizeof(struct hwsim_tx_rate)},
 619         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 620         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 621         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 622         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 623         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 624         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 625         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 626         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 627         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 628         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 629         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 630 };
 631
 632 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 633                                     struct sk_buff *skb,
 634                                     struct ieee80211_channel *chan);
 635
 636 /* sysfs attributes */
 637 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 638 {
 639         struct mac80211_hwsim_data *data = dat;
 640         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 641         struct sk_buff *skb;
 642         struct ieee80211_pspoll *pspoll;
 643
 644         if (!vp->assoc)
 645                 return;
 646
 647         wiphy_debug(data->hw->wiphy,
 648                     "%s: send PS-Poll to %pM for aid %d\n",
 649                     __func__, vp->bssid, vp->aid);
 650
 651         skb = dev_alloc_skb(sizeof(*pspoll));
 652         if (!skb)
 653                 return;
 654         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 655         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 656                                             IEEE80211_STYPE_PSPOLL |
 657                                             IEEE80211_FCTL_PM);
 658         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 659         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 660         memcpy(pspoll->ta, mac, ETH_ALEN);
 661
 662         rcu_read_lock();
 663         mac80211_hwsim_tx_frame(data->hw, skb,
 664                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 665         rcu_read_unlock();
 666 }
 667
 668 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 669                                 struct ieee80211_vif *vif, int ps)
 670 {
 671         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 672         struct sk_buff *skb;
 673         struct ieee80211_hdr *hdr;
 674
 675         if (!vp->assoc)
 676                 return;
 677
 678         wiphy_debug(data->hw->wiphy,
 679                     "%s: send data::nullfunc to %pM ps=%d\n",
 680                     __func__, vp->bssid, ps);
 681
 682         skb = dev_alloc_skb(sizeof(*hdr));
 683         if (!skb)
 684                 return;
 685         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 686         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 687                                          IEEE80211_STYPE_NULLFUNC |
 688                                          (ps ? IEEE80211_FCTL_PM : 0));
 689         hdr->duration_id = cpu_to_le16(0);
 690         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 691         memcpy(hdr->addr2, mac, ETH_ALEN);
 692         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 693
 694         rcu_read_lock();
 695         mac80211_hwsim_tx_frame(data->hw, skb,
 696                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 697         rcu_read_unlock();
 698 }
 699
 700
 701 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 702                                    struct ieee80211_vif *vif)
 703 {
 704         struct mac80211_hwsim_data *data = dat;
 705         hwsim_send_nullfunc(data, mac, vif, 1);
 706 }
 707
 708 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 709                                       struct ieee80211_vif *vif)
 710 {
 711         struct mac80211_hwsim_data *data = dat;
 712         hwsim_send_nullfunc(data, mac, vif, 0);
 713 }
 714
 715 static int hwsim_fops_ps_read(void *dat, u64 *val)
 716 {
 717         struct mac80211_hwsim_data *data = dat;
 718         *val = data->ps;
 719         return 0;
 720 }
 721
 722 static int hwsim_fops_ps_write(void *dat, u64 val)
 723 {
 724         struct mac80211_hwsim_data *data = dat;
 725         enum ps_mode old_ps;
 726
 727         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 728             val != PS_MANUAL_POLL)
 729                 return -EINVAL;
 730
 731         if (val == PS_MANUAL_POLL) {
 732                 if (data->ps != PS_ENABLED)
 733                         return -EINVAL;
 734                 local_bh_disable();
 735                 ieee80211_iterate_active_interfaces_atomic(
 736                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 737                         hwsim_send_ps_poll, data);
 738                 local_bh_enable();
 739                 return 0;
 740         }
 741         old_ps = data->ps;
 742         data->ps = val;
 743
 744         local_bh_disable();
 745         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 746                 ieee80211_iterate_active_interfaces_atomic(
 747                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 748                         hwsim_send_nullfunc_ps, data);
 749         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 750                 ieee80211_iterate_active_interfaces_atomic(
 751                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 752                         hwsim_send_nullfunc_no_ps, data);
 753         }
 754         local_bh_enable();
 755
 756         return 0;
 757 }
 758
 759 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 760                         "%llu\n");
 761
 762 static int hwsim_write_simulate_radar(void *dat, u64 val)
 763 {
 764         struct mac80211_hwsim_data *data = dat;
 765
 766         ieee80211_radar_detected(data->hw);
 767
 768         return 0;
 769 }
 770
 771 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 772                         hwsim_write_simulate_radar, "%llu\n");
 773
 774 static int hwsim_fops_group_read(void *dat, u64 *val)
 775 {
 776         struct mac80211_hwsim_data *data = dat;
 777         *val = data->group;
 778         return 0;
 779 }
 780
 781 static int hwsim_fops_group_write(void *dat, u64 val)
 782 {
 783         struct mac80211_hwsim_data *data = dat;
 784         data->group = val;
 785         return 0;
 786 }
 787
 788 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 789                         hwsim_fops_group_read, hwsim_fops_group_write,
 790                         "%llx\n");
 791
 792 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 793                                         struct net_device *dev)
 794 {
 795         /* TODO: allow packet injection */
 796         dev_kfree_skb(skb);
 797         return NETDEV_TX_OK;
 798 }
 799
 800 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 801 {
 802         return ktime_to_us(ktime_get_real());
 803 }
 804
 805 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 806 {
 807         u64 now = mac80211_hwsim_get_tsf_raw();
 808         return cpu_to_le64(now + data->tsf_offset);
 809 }
 810
 811 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 812                                   struct ieee80211_vif *vif)
 813 {
 814         struct mac80211_hwsim_data *data = hw->priv;
 815         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 816 }
 817
 818 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 819                 struct ieee80211_vif *vif, u64 tsf)
 820 {
 821         struct mac80211_hwsim_data *data = hw->priv;
 822         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 823         u32 bcn_int = data->beacon_int;
 824         u64 delta = abs(tsf - now);
 825
 826         /* adjust after beaconing with new timestamp at old TBTT */
 827         if (tsf > now) {
 828                 data->tsf_offset += delta;
 829                 data->bcn_delta = do_div(delta, bcn_int);
 830         } else {
 831                 data->tsf_offset -= delta;
 832                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 833         }
 834 }
 835
 836 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 837                                       struct sk_buff *tx_skb,
 838                                       struct ieee80211_channel *chan)
 839 {
 840         struct mac80211_hwsim_data *data = hw->priv;
 841         struct sk_buff *skb;
 842         struct hwsim_radiotap_hdr *hdr;
 843         u16 flags;
 844         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 845         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 846
 847         if (WARN_ON(!txrate))
 848                 return;
 849
 850         if (!netif_running(hwsim_mon))
 851                 return;
 852
 853         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 854         if (skb == NULL)
 855                 return;
 856
 857         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 858         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 859         hdr->hdr.it_pad = 0;
 860         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 861         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 862                                           (1 << IEEE80211_RADIOTAP_RATE) |
 863                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 864                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 865         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 866         hdr->rt_flags = 0;
 867         hdr->rt_rate = txrate->bitrate / 5;
 868         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 869         flags = IEEE80211_CHAN_2GHZ;
 870         if (txrate->flags & IEEE80211_RATE_ERP_G)
 871                 flags |= IEEE80211_CHAN_OFDM;
 872         else
 873                 flags |= IEEE80211_CHAN_CCK;
 874         hdr->rt_chbitmask = cpu_to_le16(flags);
 875
 876         skb->dev = hwsim_mon;
 877         skb_reset_mac_header(skb);
 878         skb->ip_summed = CHECKSUM_UNNECESSARY;
 879         skb->pkt_type = PACKET_OTHERHOST;
 880         skb->protocol = htons(ETH_P_802_2);
 881         memset(skb->cb, 0, sizeof(skb->cb));
 882         netif_rx(skb);
 883 }
 884
 885
 886 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 887                                        const u8 *addr)
 888 {
 889         struct sk_buff *skb;
 890         struct hwsim_radiotap_ack_hdr *hdr;
 891         u16 flags;
 892         struct ieee80211_hdr *hdr11;
 893
 894         if (!netif_running(hwsim_mon))
 895                 return;
 896
 897         skb = dev_alloc_skb(100);
 898         if (skb == NULL)
 899                 return;
 900
 901         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 902         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 903         hdr->hdr.it_pad = 0;
 904         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 905         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 906                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 907         hdr->rt_flags = 0;
 908         hdr->pad = 0;
 909         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 910         flags = IEEE80211_CHAN_2GHZ;
 911         hdr->rt_chbitmask = cpu_to_le16(flags);
 912
 913         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 914         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 915                                            IEEE80211_STYPE_ACK);
 916         hdr11->duration_id = cpu_to_le16(0);
 917         memcpy(hdr11->addr1, addr, ETH_ALEN);
 918
 919         skb->dev = hwsim_mon;
 920         skb_reset_mac_header(skb);
 921         skb->ip_summed = CHECKSUM_UNNECESSARY;
 922         skb->pkt_type = PACKET_OTHERHOST;
 923         skb->protocol = htons(ETH_P_802_2);
 924         memset(skb->cb, 0, sizeof(skb->cb));
 925         netif_rx(skb);
 926 }
 927
 928 struct mac80211_hwsim_addr_match_data {
 929         u8 addr[ETH_ALEN];
 930         bool ret;
 931 };
 932
 933 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 934                                      struct ieee80211_vif *vif)
 935 {
 936         struct mac80211_hwsim_addr_match_data *md = data;
 937
 938         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 939                 md->ret = true;
 940 }
 941
 942 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 943                                       const u8 *addr)
 944 {
 945         struct mac80211_hwsim_addr_match_data md = {
 946                 .ret = false,
 947         };
 948
 949         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 950                 return true;
 951
 952         memcpy(md.addr, addr, ETH_ALEN);
 953
 954         ieee80211_iterate_active_interfaces_atomic(data->hw,
 955                                                    IEEE80211_IFACE_ITER_NORMAL,
 956                                                    mac80211_hwsim_addr_iter,
 957                                                    &md);
 958
 959         return md.ret;
 960 }
 961
 962 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 963                            struct sk_buff *skb)
 964 {
 965         switch (data->ps) {
 966         case PS_DISABLED:
 967                 return true;
 968         case PS_ENABLED:
 969                 return false;
 970         case PS_AUTO_POLL:
 971                 /* TODO: accept (some) Beacons by default and other frames only
 972                  * if pending PS-Poll has been sent */
 973                 return true;
 974         case PS_MANUAL_POLL:
 975                 /* Allow unicast frames to own address if there is a pending
 976                  * PS-Poll */
 977                 if (data->ps_poll_pending &&
 978                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 979                         data->ps_poll_pending = false;
 980                         return true;
 981                 }
 982                 return false;
 983         }
 984
 985         return true;
 986 }
 987
 988 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 989                                   struct sk_buff *skb, int portid)
 990 {
 991         struct net *net;
 992         bool found = false;
 993         int res = -ENOENT;
 994
 995         rcu_read_lock();
 996         for_each_net_rcu(net) {
 997                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 998                         res = genlmsg_unicast(net, skb, portid);
 999                         found = true;
1000                         break;
1001                 }
1002         }
1003         rcu_read_unlock();
1004
1005         if (!found)
1006                 nlmsg_free(skb);
1007
1008         return res;
1009 }
1010
1011 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1012                                        struct sk_buff *my_skb,
1013                                        int dst_portid)
1014 {
1015         struct sk_buff *skb;
1016         struct mac80211_hwsim_data *data = hw->priv;
1017         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1018         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1019         void *msg_head;
1020         unsigned int hwsim_flags = 0;
1021         int i;
1022         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1023         uintptr_t cookie;
1024
1025         if (data->ps != PS_DISABLED)
1026                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1027         /* If the queue contains MAX_QUEUE skb's drop some */
1028         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1029                 /* Droping until WARN_QUEUE level */
1030                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1031                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1032                         data->tx_dropped++;
1033                 }
1034         }
1035
1036         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1037         if (skb == NULL)
1038                 goto nla_put_failure;
1039
1040         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1041                                HWSIM_CMD_FRAME);
1042         if (msg_head == NULL) {
1043                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1044                 goto nla_put_failure;
1045         }
1046
1047         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1048                     ETH_ALEN, data->addresses[1].addr))
1049                 goto nla_put_failure;
1050
1051         /* We get the skb->data */
1052         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1053                 goto nla_put_failure;
1054
1055         /* We get the flags for this transmission, and we translate them to
1056            wmediumd flags  */
1057
1058         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1059                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1060
1061         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1062                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1063
1064         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1065                 goto nla_put_failure;
1066
1067         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1068                 goto nla_put_failure;
1069
1070         /* We get the tx control (rate and retries) info*/
1071
1072         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1073                 tx_attempts[i].idx = info->status.rates[i].idx;
1074                 tx_attempts[i].count = info->status.rates[i].count;
1075         }
1076
1077         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1078                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1079                     tx_attempts))
1080                 goto nla_put_failure;
1081
1082         /* We create a cookie to identify this skb */
1083         data->pending_cookie++;
1084         cookie = data->pending_cookie;
1085         info->rate_driver_data[0] = (void *)cookie;
1086         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1087                 goto nla_put_failure;
1088
1089         genlmsg_end(skb, msg_head);
1090         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1091                 goto err_free_txskb;
1092
1093         /* Enqueue the packet */
1094         skb_queue_tail(&data->pending, my_skb);
1095         data->tx_pkts++;
1096         data->tx_bytes += my_skb->len;
1097         return;
1098
1099 nla_put_failure:
1100         nlmsg_free(skb);
1101 err_free_txskb:
1102         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1103         ieee80211_free_txskb(hw, my_skb);
1104         data->tx_failed++;
1105 }
1106
1107 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1108                                struct ieee80211_channel *c2)
1109 {
1110         if (!c1 || !c2)
1111                 return false;
1112
1113         return c1->center_freq == c2->center_freq;
1114 }
1115
1116 struct tx_iter_data {
1117         struct ieee80211_channel *channel;
1118         bool receive;
1119 };
1120
1121 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1122                                    struct ieee80211_vif *vif)
1123 {
1124         struct tx_iter_data *data = _data;
1125
1126         if (!vif->chanctx_conf)
1127                 return;
1128
1129         if (!hwsim_chans_compat(data->channel,
1130                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1131                 return;
1132
1133         data->receive = true;
1134 }
1135
1136 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1137 {
1138         /*
1139          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1140          * e.g. like this:
1141          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1142          * (but you should use a valid OUI, not that)
1143          *
1144          * If anyone wants to 'donate' a radiotap OUI/subns code
1145          * please send a patch removing this #ifdef and changing
1146          * the values accordingly.
1147          */
1148 #ifdef HWSIM_RADIOTAP_OUI
1149         struct ieee80211_vendor_radiotap *rtap;
1150
1151         /*
1152          * Note that this code requires the headroom in the SKB
1153          * that was allocated earlier.
1154          */
1155         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1156         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1157         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1158         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1159         rtap->subns = 127;
1160
1161         /*
1162          * Radiotap vendor namespaces can (and should) also be
1163          * split into fields by using the standard radiotap
1164          * presence bitmap mechanism. Use just BIT(0) here for
1165          * the presence bitmap.
1166          */
1167         rtap->present = BIT(0);
1168         /* We have 8 bytes of (dummy) data */
1169         rtap->len = 8;
1170         /* For testing, also require it to be aligned */
1171         rtap->align = 8;
1172         /* And also test that padding works, 4 bytes */
1173         rtap->pad = 4;
1174         /* push the data */
1175         memcpy(rtap->data, "ABCDEFGH", 8);
1176         /* make sure to clear padding, mac80211 doesn't */
1177         memset(rtap->data + 8, 0, 4);
1178
1179         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1180 #endif
1181 }
1182
1183 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1184                                           struct sk_buff *skb,
1185                                           struct ieee80211_channel *chan)
1186 {
1187         struct mac80211_hwsim_data *data = hw->priv, *data2;
1188         bool ack = false;
1189         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1190         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1191         struct ieee80211_rx_status rx_status;
1192         u64 now;
1193
1194         memset(&rx_status, 0, sizeof(rx_status));
1195         rx_status.flag |= RX_FLAG_MACTIME_START;
1196         rx_status.freq = chan->center_freq;
1197         rx_status.band = chan->band;
1198         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1199                 rx_status.rate_idx =
1200                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1201                 rx_status.vht_nss =
1202                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1203                 rx_status.flag |= RX_FLAG_VHT;
1204         } else {
1205                 rx_status.rate_idx = info->control.rates[0].idx;
1206                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1207                         rx_status.flag |= RX_FLAG_HT;
1208         }
1209         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1210                 rx_status.flag |= RX_FLAG_40MHZ;
1211         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1212                 rx_status.flag |= RX_FLAG_SHORT_GI;
1213         /* TODO: simulate real signal strength (and optional packet loss) */
1214         rx_status.signal = -50;
1215         if (info->control.vif)
1216                 rx_status.signal += info->control.vif->bss_conf.txpower;
1217
1218         if (data->ps != PS_DISABLED)
1219                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1220
1221         /* release the skb's source info */
1222         skb_orphan(skb);
1223         skb_dst_drop(skb);
1224         skb->mark = 0;
1225         secpath_reset(skb);
1226         nf_reset(skb);
1227
1228         /*
1229          * Get absolute mactime here so all HWs RX at the "same time", and
1230          * absolute TX time for beacon mactime so the timestamp matches.
1231          * Giving beacons a different mactime than non-beacons looks messy, but
1232          * it helps the Toffset be exact and a ~10us mactime discrepancy
1233          * probably doesn't really matter.
1234          */
1235         if (ieee80211_is_beacon(hdr->frame_control) ||
1236             ieee80211_is_probe_resp(hdr->frame_control))
1237                 now = data->abs_bcn_ts;
1238         else
1239                 now = mac80211_hwsim_get_tsf_raw();
1240
1241         /* Copy skb to all enabled radios that are on the current frequency */
1242         spin_lock(&hwsim_radio_lock);
1243         list_for_each_entry(data2, &hwsim_radios, list) {
1244                 struct sk_buff *nskb;
1245                 struct tx_iter_data tx_iter_data = {
1246                         .receive = false,
1247                         .channel = chan,
1248                 };
1249
1250                 if (data == data2)
1251                         continue;
1252
1253                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1254                     !hwsim_ps_rx_ok(data2, skb))
1255                         continue;
1256
1257                 if (!(data->group & data2->group))
1258                         continue;
1259
1260                 if (data->netgroup != data2->netgroup)
1261                         continue;
1262
1263                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1264                     !hwsim_chans_compat(chan, data2->channel)) {
1265                         ieee80211_iterate_active_interfaces_atomic(
1266                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1267                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1268                         if (!tx_iter_data.receive)
1269                                 continue;
1270                 }
1271
1272                 /*
1273                  * reserve some space for our vendor and the normal
1274                  * radiotap header, since we're copying anyway
1275                  */
1276                 if (skb->len < PAGE_SIZE && paged_rx) {
1277                         struct page *page = alloc_page(GFP_ATOMIC);
1278
1279                         if (!page)
1280                                 continue;
1281
1282                         nskb = dev_alloc_skb(128);
1283                         if (!nskb) {
1284                                 __free_page(page);
1285                                 continue;
1286                         }
1287
1288                         memcpy(page_address(page), skb->data, skb->len);
1289                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1290                 } else {
1291                         nskb = skb_copy(skb, GFP_ATOMIC);
1292                         if (!nskb)
1293                                 continue;
1294                 }
1295
1296                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1297                         ack = true;
1298
1299                 rx_status.mactime = now + data2->tsf_offset;
1300
1301                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1302
1303                 mac80211_hwsim_add_vendor_rtap(nskb);
1304
1305                 data2->rx_pkts++;
1306                 data2->rx_bytes += nskb->len;
1307                 ieee80211_rx_irqsafe(data2->hw, nskb);
1308         }
1309         spin_unlock(&hwsim_radio_lock);
1310
1311         return ack;
1312 }
1313
1314 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1315                               struct ieee80211_tx_control *control,
1316                               struct sk_buff *skb)
1317 {
1318         struct mac80211_hwsim_data *data = hw->priv;
1319         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1320         struct ieee80211_hdr *hdr = (void *)skb->data;
1321         struct ieee80211_chanctx_conf *chanctx_conf;
1322         struct ieee80211_channel *channel;
1323         bool ack;
1324         u32 _portid;
1325
1326         if (WARN_ON(skb->len < 10)) {
1327                 /* Should not happen; just a sanity check for addr1 use */
1328                 ieee80211_free_txskb(hw, skb);
1329                 return;
1330         }
1331
1332         if (!data->use_chanctx) {
1333                 channel = data->channel;
1334         } else if (txi->hw_queue == 4) {
1335                 channel = data->tmp_chan;
1336         } else {
1337                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1338                 if (chanctx_conf)
1339                         channel = chanctx_conf->def.chan;
1340                 else
1341                         channel = NULL;
1342         }
1343
1344         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1345                 ieee80211_free_txskb(hw, skb);
1346                 return;
1347         }
1348
1349         if (data->idle && !data->tmp_chan) {
1350                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1351                 ieee80211_free_txskb(hw, skb);
1352                 return;
1353         }
1354
1355         if (txi->control.vif)
1356                 hwsim_check_magic(txi->control.vif);
1357         if (control->sta)
1358                 hwsim_check_sta_magic(control->sta);
1359
1360         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1361                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1362                                        txi->control.rates,
1363                                        ARRAY_SIZE(txi->control.rates));
1364
1365         if (skb->len >= 24 + 8 &&
1366             ieee80211_is_probe_resp(hdr->frame_control)) {
1367                 /* fake header transmission time */
1368                 struct ieee80211_mgmt *mgmt;
1369                 struct ieee80211_rate *txrate;
1370                 u64 ts;
1371
1372                 mgmt = (struct ieee80211_mgmt *)skb->data;
1373                 txrate = ieee80211_get_tx_rate(hw, txi);
1374                 ts = mac80211_hwsim_get_tsf_raw();
1375                 mgmt->u.probe_resp.timestamp =
1376                         cpu_to_le64(ts + data->tsf_offset +
1377                                     24 * 8 * 10 / txrate->bitrate);
1378         }
1379
1380         mac80211_hwsim_monitor_rx(hw, skb, channel);
1381
1382         /* wmediumd mode check */
1383         _portid = ACCESS_ONCE(data->wmediumd);
1384
1385         if (_portid)
1386                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1387
1388         /* NO wmediumd detected, perfect medium simulation */
1389         data->tx_pkts++;
1390         data->tx_bytes += skb->len;
1391         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1392
1393         if (ack && skb->len >= 16)
1394                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1395
1396         ieee80211_tx_info_clear_status(txi);
1397
1398         /* frame was transmitted at most favorable rate at first attempt */
1399         txi->control.rates[0].count = 1;
1400         txi->control.rates[1].idx = -1;
1401
1402         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1403                 txi->flags |= IEEE80211_TX_STAT_ACK;
1404         ieee80211_tx_status_irqsafe(hw, skb);
1405 }
1406
1407
1408 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1409 {
1410         struct mac80211_hwsim_data *data = hw->priv;
1411         wiphy_debug(hw->wiphy, "%s\n", __func__);
1412         data->started = true;
1413         return 0;
1414 }
1415
1416
1417 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1418 {
1419         struct mac80211_hwsim_data *data = hw->priv;
1420         data->started = false;
1421         tasklet_hrtimer_cancel(&data->beacon_timer);
1422         wiphy_debug(hw->wiphy, "%s\n", __func__);
1423 }
1424
1425
1426 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1427                                         struct ieee80211_vif *vif)
1428 {
1429         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1430                     __func__, ieee80211_vif_type_p2p(vif),
1431                     vif->addr);
1432         hwsim_set_magic(vif);
1433
1434         vif->cab_queue = 0;
1435         vif->hw_queue[IEEE80211_AC_VO] = 0;
1436         vif->hw_queue[IEEE80211_AC_VI] = 1;
1437         vif->hw_queue[IEEE80211_AC_BE] = 2;
1438         vif->hw_queue[IEEE80211_AC_BK] = 3;
1439
1440         return 0;
1441 }
1442
1443
1444 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1445                                            struct ieee80211_vif *vif,
1446                                            enum nl80211_iftype newtype,
1447                                            bool newp2p)
1448 {
1449         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1450         wiphy_debug(hw->wiphy,
1451                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1452                     __func__, ieee80211_vif_type_p2p(vif),
1453                     newtype, vif->addr);
1454         hwsim_check_magic(vif);
1455
1456         /*
1457          * interface may change from non-AP to AP in
1458          * which case this needs to be set up again
1459          */
1460         vif->cab_queue = 0;
1461
1462         return 0;
1463 }
1464
1465 static void mac80211_hwsim_remove_interface(
1466         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1467 {
1468         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1469                     __func__, ieee80211_vif_type_p2p(vif),
1470                     vif->addr);
1471         hwsim_check_magic(vif);
1472         hwsim_clear_magic(vif);
1473 }
1474
1475 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1476                                     struct sk_buff *skb,
1477                                     struct ieee80211_channel *chan)
1478 {
1479         struct mac80211_hwsim_data *data = hw->priv;
1480         u32 _pid = ACCESS_ONCE(data->wmediumd);
1481
1482         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1483                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1484                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1485                                        txi->control.rates,
1486                                        ARRAY_SIZE(txi->control.rates));
1487         }
1488
1489         mac80211_hwsim_monitor_rx(hw, skb, chan);
1490
1491         if (_pid)
1492                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1493
1494         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1495         dev_kfree_skb(skb);
1496 }
1497
1498 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1499                                      struct ieee80211_vif *vif)
1500 {
1501         struct mac80211_hwsim_data *data = arg;
1502         struct ieee80211_hw *hw = data->hw;
1503         struct ieee80211_tx_info *info;
1504         struct ieee80211_rate *txrate;
1505         struct ieee80211_mgmt *mgmt;
1506         struct sk_buff *skb;
1507
1508         hwsim_check_magic(vif);
1509
1510         if (vif->type != NL80211_IFTYPE_AP &&
1511             vif->type != NL80211_IFTYPE_MESH_POINT &&
1512             vif->type != NL80211_IFTYPE_ADHOC)
1513                 return;
1514
1515         skb = ieee80211_beacon_get(hw, vif);
1516         if (skb == NULL)
1517                 return;
1518         info = IEEE80211_SKB_CB(skb);
1519         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1520                 ieee80211_get_tx_rates(vif, NULL, skb,
1521                                        info->control.rates,
1522                                        ARRAY_SIZE(info->control.rates));
1523
1524         txrate = ieee80211_get_tx_rate(hw, info);
1525
1526         mgmt = (struct ieee80211_mgmt *) skb->data;
1527         /* fake header transmission time */
1528         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1529         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1530                                                data->tsf_offset +
1531                                                24 * 8 * 10 / txrate->bitrate);
1532
1533         mac80211_hwsim_tx_frame(hw, skb,
1534                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1535
1536         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1537                 ieee80211_csa_finish(vif);
1538 }
1539
1540 static enum hrtimer_restart
1541 mac80211_hwsim_beacon(struct hrtimer *timer)
1542 {
1543         struct mac80211_hwsim_data *data =
1544                 container_of(timer, struct mac80211_hwsim_data,
1545                              beacon_timer.timer);
1546         struct ieee80211_hw *hw = data->hw;
1547         u64 bcn_int = data->beacon_int;
1548         ktime_t next_bcn;
1549
1550         if (!data->started)
1551                 goto out;
1552
1553         ieee80211_iterate_active_interfaces_atomic(
1554                 hw, IEEE80211_IFACE_ITER_NORMAL,
1555                 mac80211_hwsim_beacon_tx, data);
1556
1557         /* beacon at new TBTT + beacon interval */
1558         if (data->bcn_delta) {
1559                 bcn_int -= data->bcn_delta;
1560                 data->bcn_delta = 0;
1561         }
1562
1563         next_bcn = ktime_add(hrtimer_get_expires(timer),
1564                              ns_to_ktime(bcn_int * 1000));
1565         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1566 out:
1567         return HRTIMER_NORESTART;
1568 }
1569
1570 static const char * const hwsim_chanwidths[] = {
1571         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1572         [NL80211_CHAN_WIDTH_20] = "ht20",
1573         [NL80211_CHAN_WIDTH_40] = "ht40",
1574         [NL80211_CHAN_WIDTH_80] = "vht80",
1575         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1576         [NL80211_CHAN_WIDTH_160] = "vht160",
1577 };
1578
1579 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1580 {
1581         struct mac80211_hwsim_data *data = hw->priv;
1582         struct ieee80211_conf *conf = &hw->conf;
1583         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1584                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1585                 [IEEE80211_SMPS_OFF] = "off",
1586                 [IEEE80211_SMPS_STATIC] = "static",
1587                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1588         };
1589
1590         if (conf->chandef.chan)
1591                 wiphy_debug(hw->wiphy,
1592                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1593                             __func__,
1594                             conf->chandef.chan->center_freq,
1595                             conf->chandef.center_freq1,
1596                             conf->chandef.center_freq2,
1597                             hwsim_chanwidths[conf->chandef.width],
1598                             !!(conf->flags & IEEE80211_CONF_IDLE),
1599                             !!(conf->flags & IEEE80211_CONF_PS),
1600                             smps_modes[conf->smps_mode]);
1601         else
1602                 wiphy_debug(hw->wiphy,
1603                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1604                             __func__,
1605                             !!(conf->flags & IEEE80211_CONF_IDLE),
1606                             !!(conf->flags & IEEE80211_CONF_PS),
1607                             smps_modes[conf->smps_mode]);
1608
1609         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1610
1611         data->channel = conf->chandef.chan;
1612
1613         WARN_ON(data->channel && data->use_chanctx);
1614
1615         if (!data->started || !data->beacon_int)
1616                 tasklet_hrtimer_cancel(&data->beacon_timer);
1617         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1618                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1619                 u32 bcn_int = data->beacon_int;
1620                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1621
1622                 tasklet_hrtimer_start(&data->beacon_timer,
1623                                       ns_to_ktime(until_tbtt * 1000),
1624                                       HRTIMER_MODE_REL);
1625         }
1626
1627         return 0;
1628 }
1629
1630
1631 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1632                                             unsigned int changed_flags,
1633                                             unsigned int *total_flags,u64 multicast)
1634 {
1635         struct mac80211_hwsim_data *data = hw->priv;
1636
1637         wiphy_debug(hw->wiphy, "%s\n", __func__);
1638
1639         data->rx_filter = 0;
1640         if (*total_flags & FIF_ALLMULTI)
1641                 data->rx_filter |= FIF_ALLMULTI;
1642
1643         *total_flags = data->rx_filter;
1644 }
1645
1646 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1647                                        struct ieee80211_vif *vif)
1648 {
1649         unsigned int *count = data;
1650         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1651
1652         if (vp->bcn_en)
1653                 (*count)++;
1654 }
1655
1656 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1657                                             struct ieee80211_vif *vif,
1658                                             struct ieee80211_bss_conf *info,
1659                                             u32 changed)
1660 {
1661         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1662         struct mac80211_hwsim_data *data = hw->priv;
1663
1664         hwsim_check_magic(vif);
1665
1666         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1667                     __func__, changed, vif->addr);
1668
1669         if (changed & BSS_CHANGED_BSSID) {
1670                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1671                             __func__, info->bssid);
1672                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1673         }
1674
1675         if (changed & BSS_CHANGED_ASSOC) {
1676                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1677                             info->assoc, info->aid);
1678                 vp->assoc = info->assoc;
1679                 vp->aid = info->aid;
1680         }
1681
1682         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1683                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1684                             info->enable_beacon, info->beacon_int);
1685                 vp->bcn_en = info->enable_beacon;
1686                 if (data->started &&
1687                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1688                     info->enable_beacon) {
1689                         u64 tsf, until_tbtt;
1690                         u32 bcn_int;
1691                         data->beacon_int = info->beacon_int * 1024;
1692                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1693                         bcn_int = data->beacon_int;
1694                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1695                         tasklet_hrtimer_start(&data->beacon_timer,
1696                                               ns_to_ktime(until_tbtt * 1000),
1697                                               HRTIMER_MODE_REL);
1698                 } else if (!info->enable_beacon) {
1699                         unsigned int count = 0;
1700                         ieee80211_iterate_active_interfaces_atomic(
1701                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1702                                 mac80211_hwsim_bcn_en_iter, &count);
1703                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1704                                     count);
1705                         if (count == 0) {
1706                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1707                                 data->beacon_int = 0;
1708                         }
1709                 }
1710         }
1711
1712         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1713                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1714                             info->use_cts_prot);
1715         }
1716
1717         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1718                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1719                             info->use_short_preamble);
1720         }
1721
1722         if (changed & BSS_CHANGED_ERP_SLOT) {
1723                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1724         }
1725
1726         if (changed & BSS_CHANGED_HT) {
1727                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1728                             info->ht_operation_mode);
1729         }
1730
1731         if (changed & BSS_CHANGED_BASIC_RATES) {
1732                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1733                             (unsigned long long) info->basic_rates);
1734         }
1735
1736         if (changed & BSS_CHANGED_TXPOWER)
1737                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1738 }
1739
1740 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1741                                   struct ieee80211_vif *vif,
1742                                   struct ieee80211_sta *sta)
1743 {
1744         hwsim_check_magic(vif);
1745         hwsim_set_sta_magic(sta);
1746
1747         return 0;
1748 }
1749
1750 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1751                                      struct ieee80211_vif *vif,
1752                                      struct ieee80211_sta *sta)
1753 {
1754         hwsim_check_magic(vif);
1755         hwsim_clear_sta_magic(sta);
1756
1757         return 0;
1758 }
1759
1760 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1761                                       struct ieee80211_vif *vif,
1762                                       enum sta_notify_cmd cmd,
1763                                       struct ieee80211_sta *sta)
1764 {
1765         hwsim_check_magic(vif);
1766
1767         switch (cmd) {
1768         case STA_NOTIFY_SLEEP:
1769         case STA_NOTIFY_AWAKE:
1770                 /* TODO: make good use of these flags */
1771                 break;
1772         default:
1773                 WARN(1, "Invalid sta notify: %d\n", cmd);
1774                 break;
1775         }
1776 }
1777
1778 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1779                                   struct ieee80211_sta *sta,
1780                                   bool set)
1781 {
1782         hwsim_check_sta_magic(sta);
1783         return 0;
1784 }
1785
1786 static int mac80211_hwsim_conf_tx(
1787         struct ieee80211_hw *hw,
1788         struct ieee80211_vif *vif, u16 queue,
1789         const struct ieee80211_tx_queue_params *params)
1790 {
1791         wiphy_debug(hw->wiphy,
1792                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1793                     __func__, queue,
1794                     params->txop, params->cw_min,
1795                     params->cw_max, params->aifs);
1796         return 0;
1797 }
1798
1799 static int mac80211_hwsim_get_survey(
1800         struct ieee80211_hw *hw, int idx,
1801         struct survey_info *survey)
1802 {
1803         struct ieee80211_conf *conf = &hw->conf;
1804
1805         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1806
1807         if (idx != 0)
1808                 return -ENOENT;
1809
1810         /* Current channel */
1811         survey->channel = conf->chandef.chan;
1812
1813         /*
1814          * Magically conjured noise level --- this is only ok for simulated hardware.
1815          *
1816          * A real driver which cannot determine the real channel noise MUST NOT
1817          * report any noise, especially not a magically conjured one :-)
1818          */
1819         survey->filled = SURVEY_INFO_NOISE_DBM;
1820         survey->noise = -92;
1821
1822         return 0;
1823 }
1824
1825 #ifdef CONFIG_NL80211_TESTMODE
1826 /*
1827  * This section contains example code for using netlink
1828  * attributes with the testmode command in nl80211.
1829  */
1830
1831 /* These enums need to be kept in sync with userspace */
1832 enum hwsim_testmode_attr {
1833         __HWSIM_TM_ATTR_INVALID = 0,
1834         HWSIM_TM_ATTR_CMD       = 1,
1835         HWSIM_TM_ATTR_PS        = 2,
1836
1837         /* keep last */
1838         __HWSIM_TM_ATTR_AFTER_LAST,
1839         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1840 };
1841
1842 enum hwsim_testmode_cmd {
1843         HWSIM_TM_CMD_SET_PS             = 0,
1844         HWSIM_TM_CMD_GET_PS             = 1,
1845         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1846         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1847 };
1848
1849 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1850         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1851         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1852 };
1853
1854 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1855                                        struct ieee80211_vif *vif,
1856                                        void *data, int len)
1857 {
1858         struct mac80211_hwsim_data *hwsim = hw->priv;
1859         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1860         struct sk_buff *skb;
1861         int err, ps;
1862
1863         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1864                         hwsim_testmode_policy);
1865         if (err)
1866                 return err;
1867
1868         if (!tb[HWSIM_TM_ATTR_CMD])
1869                 return -EINVAL;
1870
1871         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1872         case HWSIM_TM_CMD_SET_PS:
1873                 if (!tb[HWSIM_TM_ATTR_PS])
1874                         return -EINVAL;
1875                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1876                 return hwsim_fops_ps_write(hwsim, ps);
1877         case HWSIM_TM_CMD_GET_PS:
1878                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1879                                                 nla_total_size(sizeof(u32)));
1880                 if (!skb)
1881                         return -ENOMEM;
1882                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1883                         goto nla_put_failure;
1884                 return cfg80211_testmode_reply(skb);
1885         case HWSIM_TM_CMD_STOP_QUEUES:
1886                 ieee80211_stop_queues(hw);
1887                 return 0;
1888         case HWSIM_TM_CMD_WAKE_QUEUES:
1889                 ieee80211_wake_queues(hw);
1890                 return 0;
1891         default:
1892                 return -EOPNOTSUPP;
1893         }
1894
1895  nla_put_failure:
1896         kfree_skb(skb);
1897         return -ENOBUFS;
1898 }
1899 #endif
1900
1901 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1902                                        struct ieee80211_vif *vif,
1903                                        struct ieee80211_ampdu_params *params)
1904 {
1905         struct ieee80211_sta *sta = params->sta;
1906         enum ieee80211_ampdu_mlme_action action = params->action;
1907         u16 tid = params->tid;
1908
1909         switch (action) {
1910         case IEEE80211_AMPDU_TX_START:
1911                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1912                 break;
1913         case IEEE80211_AMPDU_TX_STOP_CONT:
1914         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1915         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1916                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1917                 break;
1918         case IEEE80211_AMPDU_TX_OPERATIONAL:
1919                 break;
1920         case IEEE80211_AMPDU_RX_START:
1921         case IEEE80211_AMPDU_RX_STOP:
1922                 break;
1923         default:
1924                 return -EOPNOTSUPP;
1925         }
1926
1927         return 0;
1928 }
1929
1930 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1931                                  struct ieee80211_vif *vif,
1932                                  u32 queues, bool drop)
1933 {
1934         /* Not implemented, queues only on kernel side */
1935 }
1936
1937 static void hw_scan_work(struct work_struct *work)
1938 {
1939         struct mac80211_hwsim_data *hwsim =
1940                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1941         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1942         int dwell, i;
1943
1944         mutex_lock(&hwsim->mutex);
1945         if (hwsim->scan_chan_idx >= req->n_channels) {
1946                 struct cfg80211_scan_info info = {
1947                         .aborted = false,
1948                 };
1949
1950                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1951                 ieee80211_scan_completed(hwsim->hw, &info);
1952                 hwsim->hw_scan_request = NULL;
1953                 hwsim->hw_scan_vif = NULL;
1954                 hwsim->tmp_chan = NULL;
1955                 mutex_unlock(&hwsim->mutex);
1956                 return;
1957         }
1958
1959         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1960                     req->channels[hwsim->scan_chan_idx]->center_freq);
1961
1962         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1963         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1964                                       IEEE80211_CHAN_RADAR) ||
1965             !req->n_ssids) {
1966                 dwell = 120;
1967         } else {
1968                 dwell = 30;
1969                 /* send probes */
1970                 for (i = 0; i < req->n_ssids; i++) {
1971                         struct sk_buff *probe;
1972                         struct ieee80211_mgmt *mgmt;
1973
1974                         probe = ieee80211_probereq_get(hwsim->hw,
1975                                                        hwsim->scan_addr,
1976                                                        req->ssids[i].ssid,
1977                                                        req->ssids[i].ssid_len,
1978                                                        req->ie_len);
1979                         if (!probe)
1980                                 continue;
1981
1982                         mgmt = (struct ieee80211_mgmt *) probe->data;
1983                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
1984                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
1985
1986                         if (req->ie_len)
1987                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1988                                        req->ie_len);
1989
1990                         rcu_read_lock();
1991                         if (!ieee80211_tx_prepare_skb(hwsim->hw,
1992                                                       hwsim->hw_scan_vif,
1993                                                       probe,
1994                                                       hwsim->tmp_chan->band,
1995                                                       NULL)) {
1996                                 rcu_read_unlock();
1997                                 kfree_skb(probe);
1998                                 continue;
1999                         }
2000
2001                         local_bh_disable();
2002                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2003                                                 hwsim->tmp_chan);
2004                         rcu_read_unlock();
2005                         local_bh_enable();
2006                 }
2007         }
2008         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2009                                      msecs_to_jiffies(dwell));
2010         hwsim->scan_chan_idx++;
2011         mutex_unlock(&hwsim->mutex);
2012 }
2013
2014 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2015                                   struct ieee80211_vif *vif,
2016                                   struct ieee80211_scan_request *hw_req)
2017 {
2018         struct mac80211_hwsim_data *hwsim = hw->priv;
2019         struct cfg80211_scan_request *req = &hw_req->req;
2020
2021         mutex_lock(&hwsim->mutex);
2022         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2023                 mutex_unlock(&hwsim->mutex);
2024                 return -EBUSY;
2025         }
2026         hwsim->hw_scan_request = req;
2027         hwsim->hw_scan_vif = vif;
2028         hwsim->scan_chan_idx = 0;
2029         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2030                 get_random_mask_addr(hwsim->scan_addr,
2031                                      hw_req->req.mac_addr,
2032                                      hw_req->req.mac_addr_mask);
2033         else
2034                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2035         mutex_unlock(&hwsim->mutex);
2036
2037         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2038
2039         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2040
2041         return 0;
2042 }
2043
2044 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2045                                           struct ieee80211_vif *vif)
2046 {
2047         struct mac80211_hwsim_data *hwsim = hw->priv;
2048         struct cfg80211_scan_info info = {
2049                 .aborted = true,
2050         };
2051
2052         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2053
2054         cancel_delayed_work_sync(&hwsim->hw_scan);
2055
2056         mutex_lock(&hwsim->mutex);
2057         ieee80211_scan_completed(hwsim->hw, &info);
2058         hwsim->tmp_chan = NULL;
2059         hwsim->hw_scan_request = NULL;
2060         hwsim->hw_scan_vif = NULL;
2061         mutex_unlock(&hwsim->mutex);
2062 }
2063
2064 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2065                                    struct ieee80211_vif *vif,
2066                                    const u8 *mac_addr)
2067 {
2068         struct mac80211_hwsim_data *hwsim = hw->priv;
2069
2070         mutex_lock(&hwsim->mutex);
2071
2072         if (hwsim->scanning) {
2073                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2074                 goto out;
2075         }
2076
2077         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2078
2079         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2080         hwsim->scanning = true;
2081
2082 out:
2083         mutex_unlock(&hwsim->mutex);
2084 }
2085
2086 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2087                                             struct ieee80211_vif *vif)
2088 {
2089         struct mac80211_hwsim_data *hwsim = hw->priv;
2090
2091         mutex_lock(&hwsim->mutex);
2092
2093         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2094         hwsim->scanning = false;
2095         eth_zero_addr(hwsim->scan_addr);
2096
2097         mutex_unlock(&hwsim->mutex);
2098 }
2099
2100 static void hw_roc_start(struct work_struct *work)
2101 {
2102         struct mac80211_hwsim_data *hwsim =
2103                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2104
2105         mutex_lock(&hwsim->mutex);
2106
2107         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2108         hwsim->tmp_chan = hwsim->roc_chan;
2109         ieee80211_ready_on_channel(hwsim->hw);
2110
2111         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2112                                      msecs_to_jiffies(hwsim->roc_duration));
2113
2114         mutex_unlock(&hwsim->mutex);
2115 }
2116
2117 static void hw_roc_done(struct work_struct *work)
2118 {
2119         struct mac80211_hwsim_data *hwsim =
2120                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2121
2122         mutex_lock(&hwsim->mutex);
2123         ieee80211_remain_on_channel_expired(hwsim->hw);
2124         hwsim->tmp_chan = NULL;
2125         mutex_unlock(&hwsim->mutex);
2126
2127         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2128 }
2129
2130 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2131                               struct ieee80211_vif *vif,
2132                               struct ieee80211_channel *chan,
2133                               int duration,
2134                               enum ieee80211_roc_type type)
2135 {
2136         struct mac80211_hwsim_data *hwsim = hw->priv;
2137
2138         mutex_lock(&hwsim->mutex);
2139         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2140                 mutex_unlock(&hwsim->mutex);
2141                 return -EBUSY;
2142         }
2143
2144         hwsim->roc_chan = chan;
2145         hwsim->roc_duration = duration;
2146         mutex_unlock(&hwsim->mutex);
2147
2148         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2149                     chan->center_freq, duration);
2150         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2151
2152         return 0;
2153 }
2154
2155 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2156 {
2157         struct mac80211_hwsim_data *hwsim = hw->priv;
2158
2159         cancel_delayed_work_sync(&hwsim->roc_start);
2160         cancel_delayed_work_sync(&hwsim->roc_done);
2161
2162         mutex_lock(&hwsim->mutex);
2163         hwsim->tmp_chan = NULL;
2164         mutex_unlock(&hwsim->mutex);
2165
2166         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2167
2168         return 0;
2169 }
2170
2171 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2172                                       struct ieee80211_chanctx_conf *ctx)
2173 {
2174         hwsim_set_chanctx_magic(ctx);
2175         wiphy_debug(hw->wiphy,
2176                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2177                     ctx->def.chan->center_freq, ctx->def.width,
2178                     ctx->def.center_freq1, ctx->def.center_freq2);
2179         return 0;
2180 }
2181
2182 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2183                                           struct ieee80211_chanctx_conf *ctx)
2184 {
2185         wiphy_debug(hw->wiphy,
2186                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2187                     ctx->def.chan->center_freq, ctx->def.width,
2188                     ctx->def.center_freq1, ctx->def.center_freq2);
2189         hwsim_check_chanctx_magic(ctx);
2190         hwsim_clear_chanctx_magic(ctx);
2191 }
2192
2193 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2194                                           struct ieee80211_chanctx_conf *ctx,
2195                                           u32 changed)
2196 {
2197         hwsim_check_chanctx_magic(ctx);
2198         wiphy_debug(hw->wiphy,
2199                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2200                     ctx->def.chan->center_freq, ctx->def.width,
2201                     ctx->def.center_freq1, ctx->def.center_freq2);
2202 }
2203
2204 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2205                                              struct ieee80211_vif *vif,
2206                                              struct ieee80211_chanctx_conf *ctx)
2207 {
2208         hwsim_check_magic(vif);
2209         hwsim_check_chanctx_magic(ctx);
2210
2211         return 0;
2212 }
2213
2214 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2215                                                 struct ieee80211_vif *vif,
2216                                                 struct ieee80211_chanctx_conf *ctx)
2217 {
2218         hwsim_check_magic(vif);
2219         hwsim_check_chanctx_magic(ctx);
2220 }
2221
2222 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2223         "tx_pkts_nic",
2224         "tx_bytes_nic",
2225         "rx_pkts_nic",
2226         "rx_bytes_nic",
2227         "d_tx_dropped",
2228         "d_tx_failed",
2229         "d_ps_mode",
2230         "d_group",
2231 };
2232
2233 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2234
2235 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2236                                           struct ieee80211_vif *vif,
2237                                           u32 sset, u8 *data)
2238 {
2239         if (sset == ETH_SS_STATS)
2240                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2241                        sizeof(mac80211_hwsim_gstrings_stats));
2242 }
2243
2244 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2245                                             struct ieee80211_vif *vif, int sset)
2246 {
2247         if (sset == ETH_SS_STATS)
2248                 return MAC80211_HWSIM_SSTATS_LEN;
2249         return 0;
2250 }
2251
2252 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2253                                         struct ieee80211_vif *vif,
2254                                         struct ethtool_stats *stats, u64 *data)
2255 {
2256         struct mac80211_hwsim_data *ar = hw->priv;
2257         int i = 0;
2258
2259         data[i++] = ar->tx_pkts;
2260         data[i++] = ar->tx_bytes;
2261         data[i++] = ar->rx_pkts;
2262         data[i++] = ar->rx_bytes;
2263         data[i++] = ar->tx_dropped;
2264         data[i++] = ar->tx_failed;
2265         data[i++] = ar->ps;
2266         data[i++] = ar->group;
2267
2268         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2269 }
2270
2271 static const struct ieee80211_ops mac80211_hwsim_ops = {
2272         .tx = mac80211_hwsim_tx,
2273         .start = mac80211_hwsim_start,
2274         .stop = mac80211_hwsim_stop,
2275         .add_interface = mac80211_hwsim_add_interface,
2276         .change_interface = mac80211_hwsim_change_interface,
2277         .remove_interface = mac80211_hwsim_remove_interface,
2278         .config = mac80211_hwsim_config,
2279         .configure_filter = mac80211_hwsim_configure_filter,
2280         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2281         .sta_add = mac80211_hwsim_sta_add,
2282         .sta_remove = mac80211_hwsim_sta_remove,
2283         .sta_notify = mac80211_hwsim_sta_notify,
2284         .set_tim = mac80211_hwsim_set_tim,
2285         .conf_tx = mac80211_hwsim_conf_tx,
2286         .get_survey = mac80211_hwsim_get_survey,
2287         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2288         .ampdu_action = mac80211_hwsim_ampdu_action,
2289         .sw_scan_start = mac80211_hwsim_sw_scan,
2290         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2291         .flush = mac80211_hwsim_flush,
2292         .get_tsf = mac80211_hwsim_get_tsf,
2293         .set_tsf = mac80211_hwsim_set_tsf,
2294         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2295         .get_et_stats = mac80211_hwsim_get_et_stats,
2296         .get_et_strings = mac80211_hwsim_get_et_strings,
2297 };
2298
2299 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2300
2301 struct hwsim_new_radio_params {
2302         unsigned int channels;
2303         const char *reg_alpha2;
2304         const struct ieee80211_regdomain *regd;
2305         bool reg_strict;
2306         bool p2p_device;
2307         bool use_chanctx;
2308         bool destroy_on_close;
2309         const char *hwname;
2310         bool no_vif;
2311 };
2312
2313 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2314                                    struct genl_info *info)
2315 {
2316         if (info)
2317                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2318                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2319         else
2320                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2321                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2322 }
2323
2324 static int append_radio_msg(struct sk_buff *skb, int id,
2325                             struct hwsim_new_radio_params *param)
2326 {
2327         int ret;
2328
2329         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2330         if (ret < 0)
2331                 return ret;
2332
2333         if (param->channels) {
2334                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2335                 if (ret < 0)
2336                         return ret;
2337         }
2338
2339         if (param->reg_alpha2) {
2340                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2341                               param->reg_alpha2);
2342                 if (ret < 0)
2343                         return ret;
2344         }
2345
2346         if (param->regd) {
2347                 int i;
2348
2349                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2350                         if (hwsim_world_regdom_custom[i] != param->regd)
2351                                 continue;
2352
2353                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2354                         if (ret < 0)
2355                                 return ret;
2356                         break;
2357                 }
2358         }
2359
2360         if (param->reg_strict) {
2361                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2362                 if (ret < 0)
2363                         return ret;
2364         }
2365
2366         if (param->p2p_device) {
2367                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2368                 if (ret < 0)
2369                         return ret;
2370         }
2371
2372         if (param->use_chanctx) {
2373                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2374                 if (ret < 0)
2375                         return ret;
2376         }
2377
2378         if (param->hwname) {
2379                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2380                               strlen(param->hwname), param->hwname);
2381                 if (ret < 0)
2382                         return ret;
2383         }
2384
2385         return 0;
2386 }
2387
2388 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2389                                   struct hwsim_new_radio_params *param)
2390 {
2391         struct sk_buff *mcast_skb;
2392         void *data;
2393
2394         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2395         if (!mcast_skb)
2396                 return;
2397
2398         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2399                            HWSIM_CMD_NEW_RADIO);
2400         if (!data)
2401                 goto out_err;
2402
2403         if (append_radio_msg(mcast_skb, id, param) < 0)
2404                 goto out_err;
2405
2406         genlmsg_end(mcast_skb, data);
2407
2408         hwsim_mcast_config_msg(mcast_skb, info);
2409         return;
2410
2411 out_err:
2412         genlmsg_cancel(mcast_skb, data);
2413         nlmsg_free(mcast_skb);
2414 }
2415
2416 static int mac80211_hwsim_new_radio(struct genl_info *info,
2417                                     struct hwsim_new_radio_params *param)
2418 {
2419         int err;
2420         u8 addr[ETH_ALEN];
2421         struct mac80211_hwsim_data *data;
2422         struct ieee80211_hw *hw;
2423         enum nl80211_band band;
2424         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2425         struct net *net;
2426         int idx;
2427
2428         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2429                 return -EINVAL;
2430
2431         spin_lock_bh(&hwsim_radio_lock);
2432         idx = hwsim_radio_idx++;
2433         spin_unlock_bh(&hwsim_radio_lock);
2434
2435         if (param->use_chanctx)
2436                 ops = &mac80211_hwsim_mchan_ops;
2437         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2438         if (!hw) {
2439                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2440                 err = -ENOMEM;
2441                 goto failed;
2442         }
2443
2444         if (info)
2445                 net = genl_info_net(info);
2446         else
2447                 net = &init_net;
2448         wiphy_net_set(hw->wiphy, net);
2449
2450         data = hw->priv;
2451         data->hw = hw;
2452
2453         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2454         if (IS_ERR(data->dev)) {
2455                 printk(KERN_DEBUG
2456                        "mac80211_hwsim: device_create failed (%ld)\n",
2457                        PTR_ERR(data->dev));
2458                 err = -ENOMEM;
2459                 goto failed_drvdata;
2460         }
2461         data->dev->driver = &mac80211_hwsim_driver.driver;
2462         err = device_bind_driver(data->dev);
2463         if (err != 0) {
2464                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2465                        err);
2466                 goto failed_bind;
2467         }
2468
2469         skb_queue_head_init(&data->pending);
2470
2471         SET_IEEE80211_DEV(hw, data->dev);
2472         eth_zero_addr(addr);
2473         addr[0] = 0x02;
2474         addr[3] = idx >> 8;
2475         addr[4] = idx;
2476         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2477         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2478         data->addresses[1].addr[0] |= 0x40;
2479         hw->wiphy->n_addresses = 2;
2480         hw->wiphy->addresses = data->addresses;
2481
2482         data->channels = param->channels;
2483         data->use_chanctx = param->use_chanctx;
2484         data->idx = idx;
2485         data->destroy_on_close = param->destroy_on_close;
2486         if (info)
2487                 data->portid = info->snd_portid;
2488
2489         if (data->use_chanctx) {
2490                 hw->wiphy->max_scan_ssids = 255;
2491                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2492                 hw->wiphy->max_remain_on_channel_duration = 1000;
2493                 hw->wiphy->iface_combinations = &data->if_combination;
2494                 if (param->p2p_device)
2495                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2496                 else
2497                         data->if_combination = hwsim_if_comb[0];
2498                 hw->wiphy->n_iface_combinations = 1;
2499                 /* For channels > 1 DFS is not allowed */
2500                 data->if_combination.radar_detect_widths = 0;
2501                 data->if_combination.num_different_channels = data->channels;
2502         } else if (param->p2p_device) {
2503                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2504                 hw->wiphy->n_iface_combinations =
2505                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2506         } else {
2507                 hw->wiphy->iface_combinations = hwsim_if_comb;
2508                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2509         }
2510
2511         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2512         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2513         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2514
2515         hw->queues = 5;
2516         hw->offchannel_tx_hw_queue = 4;
2517         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2518                                      BIT(NL80211_IFTYPE_AP) |
2519                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2520                                      BIT(NL80211_IFTYPE_P2P_GO) |
2521                                      BIT(NL80211_IFTYPE_ADHOC) |
2522                                      BIT(NL80211_IFTYPE_MESH_POINT);
2523
2524         if (param->p2p_device)
2525                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2526
2527         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2528         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2529         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2530         ieee80211_hw_set(hw, QUEUE_CONTROL);
2531         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2532         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2533         ieee80211_hw_set(hw, MFP_CAPABLE);
2534         ieee80211_hw_set(hw, SIGNAL_DBM);
2535         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2536         if (rctbl)
2537                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2538
2539         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2540                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2541                             WIPHY_FLAG_AP_UAPSD |
2542                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2543         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2544                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2545                                NL80211_FEATURE_STATIC_SMPS |
2546                                NL80211_FEATURE_DYNAMIC_SMPS |
2547                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2548         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2549
2550         /* ask mac80211 to reserve space for magic */
2551         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2552         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2553         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2554
2555         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2556                 sizeof(hwsim_channels_2ghz));
2557         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2558                 sizeof(hwsim_channels_5ghz));
2559         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2560
2561         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2562                 struct ieee80211_supported_band *sband = &data->bands[band];
2563                 switch (band) {
2564                 case NL80211_BAND_2GHZ:
2565                         sband->channels = data->channels_2ghz;
2566                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2567                         sband->bitrates = data->rates;
2568                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2569                         break;
2570                 case NL80211_BAND_5GHZ:
2571                         sband->channels = data->channels_5ghz;
2572                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2573                         sband->bitrates = data->rates + 4;
2574                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2575
2576                         sband->vht_cap.vht_supported = true;
2577                         sband->vht_cap.cap =
2578                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2579                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2580                                 IEEE80211_VHT_CAP_RXLDPC |
2581                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2582                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2583                                 IEEE80211_VHT_CAP_TXSTBC |
2584                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2585                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2586                         sband->vht_cap.vht_mcs.rx_mcs_map =
2587                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2588                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2589                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2590                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2591                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2592                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2593                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2594                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2595                         sband->vht_cap.vht_mcs.tx_mcs_map =
2596                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2597                         break;
2598                 default:
2599                         continue;
2600                 }
2601
2602                 sband->ht_cap.ht_supported = true;
2603                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2604                                     IEEE80211_HT_CAP_GRN_FLD |
2605                                     IEEE80211_HT_CAP_SGI_20 |
2606                                     IEEE80211_HT_CAP_SGI_40 |
2607                                     IEEE80211_HT_CAP_DSSSCCK40;
2608                 sband->ht_cap.ampdu_factor = 0x3;
2609                 sband->ht_cap.ampdu_density = 0x6;
2610                 memset(&sband->ht_cap.mcs, 0,
2611                        sizeof(sband->ht_cap.mcs));
2612                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2613                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2614                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2615
2616                 hw->wiphy->bands[band] = sband;
2617         }
2618
2619         /* By default all radios belong to the first group */
2620         data->group = 1;
2621         mutex_init(&data->mutex);
2622
2623         data->netgroup = hwsim_net_get_netgroup(net);
2624
2625         /* Enable frame retransmissions for lossy channels */
2626         hw->max_rates = 4;
2627         hw->max_rate_tries = 11;
2628
2629         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2630         hw->wiphy->n_vendor_commands =
2631                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2632         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2633         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2634
2635         if (param->reg_strict)
2636                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2637         if (param->regd) {
2638                 data->regd = param->regd;
2639                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2640                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2641                 /* give the regulatory workqueue a chance to run */
2642                 schedule_timeout_interruptible(1);
2643         }
2644
2645         if (param->no_vif)
2646                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2647
2648         tasklet_hrtimer_init(&data->beacon_timer,
2649                              mac80211_hwsim_beacon,
2650                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2651
2652         err = ieee80211_register_hw(hw);
2653         if (err < 0) {
2654                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2655                        err);
2656                 goto failed_hw;
2657         }
2658
2659         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2660
2661         if (param->reg_alpha2) {
2662                 data->alpha2[0] = param->reg_alpha2[0];
2663                 data->alpha2[1] = param->reg_alpha2[1];
2664                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2665         }
2666
2667         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2668         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2669         debugfs_create_file("group", 0666, data->debugfs, data,
2670                             &hwsim_fops_group);
2671         if (!data->use_chanctx)
2672                 debugfs_create_file("dfs_simulate_radar", 0222,
2673                                     data->debugfs,
2674                                     data, &hwsim_simulate_radar);
2675
2676         spin_lock_bh(&hwsim_radio_lock);
2677         list_add_tail(&data->list, &hwsim_radios);
2678         spin_unlock_bh(&hwsim_radio_lock);
2679
2680         hwsim_mcast_new_radio(idx, info, param);
2681
2682         return idx;
2683
2684 failed_hw:
2685         device_release_driver(data->dev);
2686 failed_bind:
2687         device_unregister(data->dev);
2688 failed_drvdata:
2689         ieee80211_free_hw(hw);
2690 failed:
2691         return err;
2692 }
2693
2694 static void hwsim_mcast_del_radio(int id, const char *hwname,
2695                                   struct genl_info *info)
2696 {
2697         struct sk_buff *skb;
2698         void *data;
2699         int ret;
2700
2701         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2702         if (!skb)
2703                 return;
2704
2705         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2706                            HWSIM_CMD_DEL_RADIO);
2707         if (!data)
2708                 goto error;
2709
2710         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2711         if (ret < 0)
2712                 goto error;
2713
2714         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2715                       hwname);
2716         if (ret < 0)
2717                 goto error;
2718
2719         genlmsg_end(skb, data);
2720
2721         hwsim_mcast_config_msg(skb, info);
2722
2723         return;
2724
2725 error:
2726         nlmsg_free(skb);
2727 }
2728
2729 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2730                                      const char *hwname,
2731                                      struct genl_info *info)
2732 {
2733         hwsim_mcast_del_radio(data->idx, hwname, info);
2734         debugfs_remove_recursive(data->debugfs);
2735         ieee80211_unregister_hw(data->hw);
2736         device_release_driver(data->dev);
2737         device_unregister(data->dev);
2738         ieee80211_free_hw(data->hw);
2739 }
2740
2741 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2742                                     struct mac80211_hwsim_data *data,
2743                                     u32 portid, u32 seq,
2744                                     struct netlink_callback *cb, int flags)
2745 {
2746         void *hdr;
2747         struct hwsim_new_radio_params param = { };
2748         int res = -EMSGSIZE;
2749
2750         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2751                           HWSIM_CMD_GET_RADIO);
2752         if (!hdr)
2753                 return -EMSGSIZE;
2754
2755         if (cb)
2756                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2757
2758         if (data->alpha2[0] && data->alpha2[1])
2759                 param.reg_alpha2 = data->alpha2;
2760
2761         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2762                                         REGULATORY_STRICT_REG);
2763         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2764                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2765         param.use_chanctx = data->use_chanctx;
2766         param.regd = data->regd;
2767         param.channels = data->channels;
2768         param.hwname = wiphy_name(data->hw->wiphy);
2769
2770         res = append_radio_msg(skb, data->idx, &param);
2771         if (res < 0)
2772                 goto out_err;
2773
2774         genlmsg_end(skb, hdr);
2775         return 0;
2776
2777 out_err:
2778         genlmsg_cancel(skb, hdr);
2779         return res;
2780 }
2781
2782 static void mac80211_hwsim_free(void)
2783 {
2784         struct mac80211_hwsim_data *data;
2785
2786         spin_lock_bh(&hwsim_radio_lock);
2787         while ((data = list_first_entry_or_null(&hwsim_radios,
2788                                                 struct mac80211_hwsim_data,
2789                                                 list))) {
2790                 list_del(&data->list);
2791                 spin_unlock_bh(&hwsim_radio_lock);
2792                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2793                                          NULL);
2794                 spin_lock_bh(&hwsim_radio_lock);
2795         }
2796         spin_unlock_bh(&hwsim_radio_lock);
2797         class_destroy(hwsim_class);
2798 }
2799
2800 static const struct net_device_ops hwsim_netdev_ops = {
2801         .ndo_start_xmit         = hwsim_mon_xmit,
2802         .ndo_change_mtu         = eth_change_mtu,
2803         .ndo_set_mac_address    = eth_mac_addr,
2804         .ndo_validate_addr      = eth_validate_addr,
2805 };
2806
2807 static void hwsim_mon_setup(struct net_device *dev)
2808 {
2809         dev->netdev_ops = &hwsim_netdev_ops;
2810         dev->destructor = free_netdev;
2811         ether_setup(dev);
2812         dev->priv_flags |= IFF_NO_QUEUE;
2813         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2814         eth_zero_addr(dev->dev_addr);
2815         dev->dev_addr[0] = 0x12;
2816 }
2817
2818 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2819 {
2820         struct mac80211_hwsim_data *data;
2821         bool _found = false;
2822
2823         spin_lock_bh(&hwsim_radio_lock);
2824         list_for_each_entry(data, &hwsim_radios, list) {
2825                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2826                         _found = true;
2827                         break;
2828                 }
2829         }
2830         spin_unlock_bh(&hwsim_radio_lock);
2831
2832         if (!_found)
2833                 return NULL;
2834
2835         return data;
2836 }
2837
2838 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2839 {
2840         struct mac80211_hwsim_data *data;
2841
2842         hwsim_net_set_wmediumd(net, portid);
2843
2844         spin_lock_bh(&hwsim_radio_lock);
2845         list_for_each_entry(data, &hwsim_radios, list) {
2846                 if (data->netgroup == hwsim_net_get_netgroup(net))
2847                         data->wmediumd = portid;
2848         }
2849         spin_unlock_bh(&hwsim_radio_lock);
2850 }
2851
2852 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2853                                            struct genl_info *info)
2854 {
2855
2856         struct ieee80211_hdr *hdr;
2857         struct mac80211_hwsim_data *data2;
2858         struct ieee80211_tx_info *txi;
2859         struct hwsim_tx_rate *tx_attempts;
2860         u64 ret_skb_cookie;
2861         struct sk_buff *skb, *tmp;
2862         const u8 *src;
2863         unsigned int hwsim_flags;
2864         int i;
2865         bool found = false;
2866
2867         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2868             !info->attrs[HWSIM_ATTR_FLAGS] ||
2869             !info->attrs[HWSIM_ATTR_COOKIE] ||
2870             !info->attrs[HWSIM_ATTR_SIGNAL] ||
2871             !info->attrs[HWSIM_ATTR_TX_INFO])
2872                 goto out;
2873
2874         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2875         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2876         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2877
2878         data2 = get_hwsim_data_ref_from_addr(src);
2879         if (!data2)
2880                 goto out;
2881
2882         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2883                 goto out;
2884
2885         if (info->snd_portid != data2->wmediumd)
2886                 goto out;
2887
2888         /* look for the skb matching the cookie passed back from user */
2889         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2890                 u64 skb_cookie;
2891
2892                 txi = IEEE80211_SKB_CB(skb);
2893                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2894
2895                 if (skb_cookie == ret_skb_cookie) {
2896                         skb_unlink(skb, &data2->pending);
2897                         found = true;
2898                         break;
2899                 }
2900         }
2901
2902         /* not found */
2903         if (!found)
2904                 goto out;
2905
2906         /* Tx info received because the frame was broadcasted on user space,
2907          so we get all the necessary info: tx attempts and skb control buff */
2908
2909         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2910                        info->attrs[HWSIM_ATTR_TX_INFO]);
2911
2912         /* now send back TX status */
2913         txi = IEEE80211_SKB_CB(skb);
2914
2915         ieee80211_tx_info_clear_status(txi);
2916
2917         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2918                 txi->status.rates[i].idx = tx_attempts[i].idx;
2919                 txi->status.rates[i].count = tx_attempts[i].count;
2920                 /*txi->status.rates[i].flags = 0;*/
2921         }
2922
2923         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2924
2925         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2926            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2927                 if (skb->len >= 16) {
2928                         hdr = (struct ieee80211_hdr *) skb->data;
2929                         mac80211_hwsim_monitor_ack(data2->channel,
2930                                                    hdr->addr2);
2931                 }
2932                 txi->flags |= IEEE80211_TX_STAT_ACK;
2933         }
2934
2935         if (hwsim_flags & HWSIM_TX_CTL_NO_ACK)
2936                 txi->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
2937
2938         ieee80211_tx_status_irqsafe(data2->hw, skb);
2939         return 0;
2940 out:
2941         return -EINVAL;
2942
2943 }
2944
2945 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2946                                           struct genl_info *info)
2947 {
2948         struct mac80211_hwsim_data *data2;
2949         struct ieee80211_rx_status rx_status;
2950         const u8 *dst;
2951         int frame_data_len;
2952         void *frame_data;
2953         struct sk_buff *skb = NULL;
2954
2955         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2956             !info->attrs[HWSIM_ATTR_FRAME] ||
2957             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2958             !info->attrs[HWSIM_ATTR_SIGNAL])
2959                 goto out;
2960
2961         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2962         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2963         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2964
2965         /* Allocate new skb here */
2966         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2967         if (skb == NULL)
2968                 goto err;
2969
2970         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2971                 goto err;
2972
2973         /* Copy the data */
2974         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2975
2976         data2 = get_hwsim_data_ref_from_addr(dst);
2977         if (!data2)
2978                 goto out;
2979
2980         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2981                 goto out;
2982
2983         if (info->snd_portid != data2->wmediumd)
2984                 goto out;
2985
2986         /* check if radio is configured properly */
2987
2988         if (data2->idle || !data2->started)
2989                 goto out;
2990
2991         /* A frame is received from user space */
2992         memset(&rx_status, 0, sizeof(rx_status));
2993         if (info->attrs[HWSIM_ATTR_FREQ]) {
2994                 /* throw away off-channel packets, but allow both the temporary
2995                  * ("hw" scan/remain-on-channel) and regular channel, since the
2996                  * internal datapath also allows this
2997                  */
2998                 mutex_lock(&data2->mutex);
2999                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3000
3001                 if (rx_status.freq != data2->channel->center_freq &&
3002                     (!data2->tmp_chan ||
3003                      rx_status.freq != data2->tmp_chan->center_freq)) {
3004                         mutex_unlock(&data2->mutex);
3005                         goto out;
3006                 }
3007                 mutex_unlock(&data2->mutex);
3008         } else {
3009                 rx_status.freq = data2->channel->center_freq;
3010         }
3011
3012         rx_status.band = data2->channel->band;
3013         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3014         if (rx_status.rate_idx >= data2->hw->wiphy->bands[rx_status.band]->n_bitrates)
3015                 goto out;
3016         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3017
3018         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3019         data2->rx_pkts++;
3020         data2->rx_bytes += skb->len;
3021         ieee80211_rx_irqsafe(data2->hw, skb);
3022
3023         return 0;
3024 err:
3025         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3026 out:
3027         dev_kfree_skb(skb);
3028         return -EINVAL;
3029 }
3030
3031 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3032                                       struct genl_info *info)
3033 {
3034         struct net *net = genl_info_net(info);
3035         struct mac80211_hwsim_data *data;
3036         int chans = 1;
3037
3038         spin_lock_bh(&hwsim_radio_lock);
3039         list_for_each_entry(data, &hwsim_radios, list)
3040                 chans = max(chans, data->channels);
3041         spin_unlock_bh(&hwsim_radio_lock);
3042
3043         /* In the future we should revise the userspace API and allow it
3044          * to set a flag that it does support multi-channel, then we can
3045          * let this pass conditionally on the flag.
3046          * For current userspace, prohibit it since it won't work right.
3047          */
3048         if (chans > 1)
3049                 return -EOPNOTSUPP;
3050
3051         if (hwsim_net_get_wmediumd(net))
3052                 return -EBUSY;
3053
3054         hwsim_register_wmediumd(net, info->snd_portid);
3055
3056         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3057                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3058
3059         return 0;
3060 }
3061
3062 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3063 {
3064         struct hwsim_new_radio_params param = { 0 };
3065         const char *hwname = NULL;
3066         int ret;
3067
3068         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3069         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3070         param.channels = channels;
3071         param.destroy_on_close =
3072                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3073
3074         if (info->attrs[HWSIM_ATTR_CHANNELS])
3075                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3076
3077         if (info->attrs[HWSIM_ATTR_NO_VIF])
3078                 param.no_vif = true;
3079
3080         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3081                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3082                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3083                                   GFP_KERNEL);
3084                 if (!hwname)
3085                         return -ENOMEM;
3086                 param.hwname = hwname;
3087         }
3088
3089         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3090                 param.use_chanctx = true;
3091         else
3092                 param.use_chanctx = (param.channels > 1);
3093
3094         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3095                 param.reg_alpha2 =
3096                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3097
3098         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3099                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3100
3101                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom)) {
3102                         kfree(hwname);
3103                         return -EINVAL;
3104                 }
3105                 param.regd = hwsim_world_regdom_custom[idx];
3106         }
3107
3108         ret = mac80211_hwsim_new_radio(info, &param);
3109         kfree(hwname);
3110         return ret;
3111 }
3112
3113 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3114 {
3115         struct mac80211_hwsim_data *data;
3116         s64 idx = -1;
3117         const char *hwname = NULL;
3118
3119         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3120                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3121         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3122                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3123                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3124                                   GFP_KERNEL);
3125                 if (!hwname)
3126                         return -ENOMEM;
3127         } else
3128                 return -EINVAL;
3129
3130         spin_lock_bh(&hwsim_radio_lock);
3131         list_for_each_entry(data, &hwsim_radios, list) {
3132                 if (idx >= 0) {
3133                         if (data->idx != idx)
3134                                 continue;
3135                 } else {
3136                         if (!hwname ||
3137                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3138                                 continue;
3139                 }
3140
3141                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3142                         continue;
3143
3144                 list_del(&data->list);
3145                 spin_unlock_bh(&hwsim_radio_lock);
3146                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3147                                          info);
3148                 kfree(hwname);
3149                 return 0;
3150         }
3151         spin_unlock_bh(&hwsim_radio_lock);
3152
3153         kfree(hwname);
3154         return -ENODEV;
3155 }
3156
3157 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3158 {
3159         struct mac80211_hwsim_data *data;
3160         struct sk_buff *skb;
3161         int idx, res = -ENODEV;
3162
3163         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3164                 return -EINVAL;
3165         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3166
3167         spin_lock_bh(&hwsim_radio_lock);
3168         list_for_each_entry(data, &hwsim_radios, list) {
3169                 if (data->idx != idx)
3170                         continue;
3171
3172                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3173                         continue;
3174
3175                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3176                 if (!skb) {
3177                         res = -ENOMEM;
3178                         goto out_err;
3179                 }
3180
3181                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3182                                                info->snd_seq, NULL, 0);
3183                 if (res < 0) {
3184                         nlmsg_free(skb);
3185                         goto out_err;
3186                 }
3187
3188                 res = genlmsg_reply(skb, info);
3189                 break;
3190         }
3191
3192 out_err:
3193         spin_unlock_bh(&hwsim_radio_lock);
3194
3195         return res;
3196 }
3197
3198 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3199                                struct netlink_callback *cb)
3200 {
3201         int idx = cb->args[0];
3202         struct mac80211_hwsim_data *data = NULL;
3203         int res;
3204
3205         spin_lock_bh(&hwsim_radio_lock);
3206
3207         if (idx == hwsim_radio_idx)
3208                 goto done;
3209
3210         list_for_each_entry(data, &hwsim_radios, list) {
3211                 if (data->idx < idx)
3212                         continue;
3213
3214                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3215                         continue;
3216
3217                 res = mac80211_hwsim_get_radio(skb, data,
3218                                                NETLINK_CB(cb->skb).portid,
3219                                                cb->nlh->nlmsg_seq, cb,
3220                                                NLM_F_MULTI);
3221                 if (res < 0)
3222                         break;
3223
3224                 idx = data->idx + 1;
3225         }
3226
3227         cb->args[0] = idx;
3228
3229 done:
3230         spin_unlock_bh(&hwsim_radio_lock);
3231         return skb->len;
3232 }
3233
3234 /* Generic Netlink operations array */
3235 static const struct genl_ops hwsim_ops[] = {
3236         {
3237                 .cmd = HWSIM_CMD_REGISTER,
3238                 .policy = hwsim_genl_policy,
3239                 .doit = hwsim_register_received_nl,
3240                 .flags = GENL_UNS_ADMIN_PERM,
3241         },
3242         {
3243                 .cmd = HWSIM_CMD_FRAME,
3244                 .policy = hwsim_genl_policy,
3245                 .doit = hwsim_cloned_frame_received_nl,
3246         },
3247         {
3248                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3249                 .policy = hwsim_genl_policy,
3250                 .doit = hwsim_tx_info_frame_received_nl,
3251         },
3252         {
3253                 .cmd = HWSIM_CMD_NEW_RADIO,
3254                 .policy = hwsim_genl_policy,
3255                 .doit = hwsim_new_radio_nl,
3256                 .flags = GENL_UNS_ADMIN_PERM,
3257         },
3258         {
3259                 .cmd = HWSIM_CMD_DEL_RADIO,
3260                 .policy = hwsim_genl_policy,
3261                 .doit = hwsim_del_radio_nl,
3262                 .flags = GENL_UNS_ADMIN_PERM,
3263         },
3264         {
3265                 .cmd = HWSIM_CMD_GET_RADIO,
3266                 .policy = hwsim_genl_policy,
3267                 .doit = hwsim_get_radio_nl,
3268                 .dumpit = hwsim_dump_radio_nl,
3269         },
3270 };
3271
3272 static void destroy_radio(struct work_struct *work)
3273 {
3274         struct mac80211_hwsim_data *data =
3275                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3276
3277         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3278 }
3279
3280 static void remove_user_radios(u32 portid)
3281 {
3282         struct mac80211_hwsim_data *entry, *tmp;
3283
3284         spin_lock_bh(&hwsim_radio_lock);
3285         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3286                 if (entry->destroy_on_close && entry->portid == portid) {
3287                         list_del(&entry->list);
3288                         INIT_WORK(&entry->destroy_work, destroy_radio);
3289                         schedule_work(&entry->destroy_work);
3290                 }
3291         }
3292         spin_unlock_bh(&hwsim_radio_lock);
3293 }
3294
3295 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3296                                          unsigned long state,
3297                                          void *_notify)
3298 {
3299         struct netlink_notify *notify = _notify;
3300
3301         if (state != NETLINK_URELEASE)
3302                 return NOTIFY_DONE;
3303
3304         remove_user_radios(notify->portid);
3305
3306         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3307                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3308                        " socket, switching to perfect channel medium\n");
3309                 hwsim_register_wmediumd(notify->net, 0);
3310         }
3311         return NOTIFY_DONE;
3312
3313 }
3314
3315 static struct notifier_block hwsim_netlink_notifier = {
3316         .notifier_call = mac80211_hwsim_netlink_notify,
3317 };
3318
3319 static int hwsim_init_netlink(void)
3320 {
3321         int rc;
3322
3323         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3324
3325         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3326                                                   hwsim_ops,
3327                                                   hwsim_mcgrps);
3328         if (rc)
3329                 goto failure;
3330
3331         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3332         if (rc) {
3333                 genl_unregister_family(&hwsim_genl_family);
3334                 goto failure;
3335         }
3336
3337         return 0;
3338
3339 failure:
3340         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3341         return -EINVAL;
3342 }
3343
3344 static __net_init int hwsim_init_net(struct net *net)
3345 {
3346         hwsim_net_set_netgroup(net);
3347
3348         return 0;
3349 }
3350
3351 static void __net_exit hwsim_exit_net(struct net *net)
3352 {
3353         struct mac80211_hwsim_data *data, *tmp;
3354
3355         spin_lock_bh(&hwsim_radio_lock);
3356         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3357                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3358                         continue;
3359
3360                 /* Radios created in init_net are returned to init_net. */
3361                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3362                         continue;
3363
3364                 list_del(&data->list);
3365                 spin_unlock_bh(&hwsim_radio_lock);
3366                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3367                                          NULL);
3368                 spin_lock_bh(&hwsim_radio_lock);
3369
3370         }
3371         spin_unlock_bh(&hwsim_radio_lock);
3372 }
3373
3374 static struct pernet_operations hwsim_net_ops = {
3375         .init = hwsim_init_net,
3376         .exit = hwsim_exit_net,
3377         .id   = &hwsim_net_id,
3378         .size = sizeof(struct hwsim_net),
3379 };
3380
3381 static void hwsim_exit_netlink(void)
3382 {
3383         /* unregister the notifier */
3384         netlink_unregister_notifier(&hwsim_netlink_notifier);
3385         /* unregister the family */
3386         genl_unregister_family(&hwsim_genl_family);
3387 }
3388
3389 static int __init init_mac80211_hwsim(void)
3390 {
3391         int i, err;
3392
3393         if (radios < 0 || radios > 100)
3394                 return -EINVAL;
3395
3396         if (channels < 1)
3397                 return -EINVAL;
3398
3399         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3400         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3401         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3402         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3403         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3404         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3405         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3406         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3407         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3408         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3409         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3410                 mac80211_hwsim_assign_vif_chanctx;
3411         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3412                 mac80211_hwsim_unassign_vif_chanctx;
3413
3414         spin_lock_init(&hwsim_radio_lock);
3415
3416         err = register_pernet_device(&hwsim_net_ops);
3417         if (err)
3418                 return err;
3419
3420         err = platform_driver_register(&mac80211_hwsim_driver);
3421         if (err)
3422                 goto out_unregister_pernet;
3423
3424         err = hwsim_init_netlink();
3425         if (err)
3426                 goto out_unregister_driver;
3427
3428         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3429         if (IS_ERR(hwsim_class)) {
3430                 err = PTR_ERR(hwsim_class);
3431                 goto out_exit_netlink;
3432         }
3433
3434         for (i = 0; i < radios; i++) {
3435                 struct hwsim_new_radio_params param = { 0 };
3436
3437                 param.channels = channels;
3438
3439                 switch (regtest) {
3440                 case HWSIM_REGTEST_DIFF_COUNTRY:
3441                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3442                                 param.reg_alpha2 = hwsim_alpha2s[i];
3443                         break;
3444                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3445                         if (!i)
3446                                 param.reg_alpha2 = hwsim_alpha2s[0];
3447                         break;
3448                 case HWSIM_REGTEST_STRICT_ALL:
3449                         param.reg_strict = true;
3450                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3451                         param.reg_alpha2 = hwsim_alpha2s[0];
3452                         break;
3453                 case HWSIM_REGTEST_WORLD_ROAM:
3454                         if (i == 0)
3455                                 param.regd = &hwsim_world_regdom_custom_01;
3456                         break;
3457                 case HWSIM_REGTEST_CUSTOM_WORLD:
3458                         param.regd = &hwsim_world_regdom_custom_01;
3459                         break;
3460                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3461                         if (i == 0)
3462                                 param.regd = &hwsim_world_regdom_custom_01;
3463                         else if (i == 1)
3464                                 param.regd = &hwsim_world_regdom_custom_02;
3465                         break;
3466                 case HWSIM_REGTEST_STRICT_FOLLOW:
3467                         if (i == 0) {
3468                                 param.reg_strict = true;
3469                                 param.reg_alpha2 = hwsim_alpha2s[0];
3470                         }
3471                         break;
3472                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3473                         if (i == 0) {
3474                                 param.reg_strict = true;
3475                                 param.reg_alpha2 = hwsim_alpha2s[0];
3476                         } else if (i == 1) {
3477                                 param.reg_alpha2 = hwsim_alpha2s[1];
3478                         }
3479                         break;
3480                 case HWSIM_REGTEST_ALL:
3481                         switch (i) {
3482                         case 0:
3483                                 param.regd = &hwsim_world_regdom_custom_01;
3484                                 break;
3485                         case 1:
3486                                 param.regd = &hwsim_world_regdom_custom_02;
3487                                 break;
3488                         case 2:
3489                                 param.reg_alpha2 = hwsim_alpha2s[0];
3490                                 break;
3491                         case 3:
3492                                 param.reg_alpha2 = hwsim_alpha2s[1];
3493                                 break;
3494                         case 4:
3495                                 param.reg_strict = true;
3496                                 param.reg_alpha2 = hwsim_alpha2s[2];
3497                                 break;
3498                         }
3499                         break;
3500                 default:
3501                         break;
3502                 }
3503
3504                 param.p2p_device = support_p2p_device;
3505                 param.use_chanctx = channels > 1;
3506
3507                 err = mac80211_hwsim_new_radio(NULL, &param);
3508                 if (err < 0)
3509                         goto out_free_radios;
3510         }
3511
3512         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3513                                  hwsim_mon_setup);
3514         if (hwsim_mon == NULL) {
3515                 err = -ENOMEM;
3516                 goto out_free_radios;
3517         }
3518
3519         rtnl_lock();
3520         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3521         if (err < 0) {
3522                 rtnl_unlock();
3523                 goto out_free_radios;
3524         }
3525
3526         err = register_netdevice(hwsim_mon);
3527         if (err < 0) {
3528                 rtnl_unlock();
3529                 goto out_free_mon;
3530         }
3531         rtnl_unlock();
3532
3533         return 0;
3534
3535 out_free_mon:
3536         free_netdev(hwsim_mon);
3537 out_free_radios:
3538         mac80211_hwsim_free();
3539 out_exit_netlink:
3540         hwsim_exit_netlink();
3541 out_unregister_driver:
3542         platform_driver_unregister(&mac80211_hwsim_driver);
3543 out_unregister_pernet:
3544         unregister_pernet_device(&hwsim_net_ops);
3545         return err;
3546 }
3547 module_init(init_mac80211_hwsim);
3548
3549 static void __exit exit_mac80211_hwsim(void)
3550 {
3551         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3552
3553         hwsim_exit_netlink();
3554
3555         mac80211_hwsim_free();
3556         unregister_netdev(hwsim_mon);
3557         platform_driver_unregister(&mac80211_hwsim_driver);
3558         unregister_pernet_device(&hwsim_net_ops);
3559 }
3560 module_exit(exit_mac80211_hwsim);