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