drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include <net/net_namespace.h>
  34 #include <net/netns/generic.h>
  35 #include "mac80211_hwsim.h"
  36
  37 #define WARN_QUEUE 100
  38 #define MAX_QUEUE 200
  39
  40 MODULE_AUTHOR("Jouni Malinen");
  41 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  42 MODULE_LICENSE("GPL");
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 static bool support_p2p_device = true;
  61 module_param(support_p2p_device, bool, 0444);
  62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  63
  64 /**
  65  * enum hwsim_regtest - the type of regulatory tests we offer
  66  *
  67  * These are the different values you can use for the regtest
  68  * module parameter. This is useful to help test world roaming
  69  * and the driver regulatory_hint() call and combinations of these.
  70  * If you want to do specific alpha2 regulatory domain tests simply
  71  * use the userspace regulatory request as that will be respected as
  72  * well without the need of this module parameter. This is designed
  73  * only for testing the driver regulatory request, world roaming
  74  * and all possible combinations.
  75  *
  76  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  77  *      this is the default value.
  78  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  79  *      hint, only one driver regulatory hint will be sent as such the
  80  *      secondary radios are expected to follow.
  81  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  82  *      request with all radios reporting the same regulatory domain.
  83  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  84  *      different regulatory domains requests. Expected behaviour is for
  85  *      an intersection to occur but each device will still use their
  86  *      respective regulatory requested domains. Subsequent radios will
  87  *      use the resulting intersection.
  88  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  89  *      this by using a custom beacon-capable regulatory domain for the first
  90  *      radio. All other device world roam.
  91  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  92  *      domain requests. All radios will adhere to this custom world regulatory
  93  *      domain.
  94  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  95  *      domain requests. The first radio will adhere to the first custom world
  96  *      regulatory domain, the second one to the second custom world regulatory
  97  *      domain. All other devices will world roam.
  98  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  99  *      settings, only the first radio will send a regulatory domain request
 100  *      and use strict settings. The rest of the radios are expected to follow.
 101  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 102  *      settings. All radios will adhere to this.
 103  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 104  *      domain settings, combined with secondary driver regulatory domain
 105  *      settings. The first radio will get a strict regulatory domain setting
 106  *      using the first driver regulatory request and the second radio will use
 107  *      non-strict settings using the second driver regulatory request. All
 108  *      other devices should follow the intersection created between the
 109  *      first two.
 110  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 111  *      at least 6 radios for a complete test. We will test in this order:
 112  *      1 - driver custom world regulatory domain
 113  *      2 - second custom world regulatory domain
 114  *      3 - first driver regulatory domain request
 115  *      4 - second driver regulatory domain request
 116  *      5 - strict regulatory domain settings using the third driver regulatory
 117  *          domain request
 118  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 119  *                 regulatory requests.
 120  */
 121 enum hwsim_regtest {
 122         HWSIM_REGTEST_DISABLED = 0,
 123         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 124         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 125         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 126         HWSIM_REGTEST_WORLD_ROAM = 4,
 127         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 128         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 129         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 130         HWSIM_REGTEST_STRICT_ALL = 8,
 131         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 132         HWSIM_REGTEST_ALL = 10,
 133 };
 134
 135 /* Set to one of the HWSIM_REGTEST_* values above */
 136 static int regtest = HWSIM_REGTEST_DISABLED;
 137 module_param(regtest, int, 0444);
 138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 139
 140 static const char *hwsim_alpha2s[] = {
 141         "FI",
 142         "AL",
 143         "US",
 144         "DE",
 145         "JP",
 146         "AL",
 147 };
 148
 149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 150         .n_reg_rules = 4,
 151         .alpha2 =  "99",
 152         .reg_rules = {
 153                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 154                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 155                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 156                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 157         }
 158 };
 159
 160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 161         .n_reg_rules = 2,
 162         .alpha2 =  "99",
 163         .reg_rules = {
 164                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 165                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 166                          NL80211_RRF_NO_IR),
 167         }
 168 };
 169
 170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 171         &hwsim_world_regdom_custom_01,
 172         &hwsim_world_regdom_custom_02,
 173 };
 174
 175 struct hwsim_vif_priv {
 176         u32 magic;
 177         u8 bssid[ETH_ALEN];
 178         bool assoc;
 179         bool bcn_en;
 180         u16 aid;
 181 };
 182
 183 #define HWSIM_VIF_MAGIC 0x69537748
 184
 185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 186 {
 187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 188         WARN(vp->magic != HWSIM_VIF_MAGIC,
 189              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 190              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 191 }
 192
 193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 194 {
 195         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 196         vp->magic = HWSIM_VIF_MAGIC;
 197 }
 198
 199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = 0;
 203 }
 204
 205 struct hwsim_sta_priv {
 206         u32 magic;
 207 };
 208
 209 #define HWSIM_STA_MAGIC 0x6d537749
 210
 211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 212 {
 213         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 214         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 215 }
 216
 217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         sp->magic = HWSIM_STA_MAGIC;
 221 }
 222
 223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = 0;
 227 }
 228
 229 struct hwsim_chanctx_priv {
 230         u32 magic;
 231 };
 232
 233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 234
 235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 236 {
 237         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 238         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 239 }
 240
 241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         cp->magic = HWSIM_CHANCTX_MAGIC;
 245 }
 246
 247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = 0;
 251 }
 252
 253 static unsigned int hwsim_net_id;
 254
 255 static int hwsim_netgroup;
 256
 257 struct hwsim_net {
 258         int netgroup;
 259         u32 wmediumd;
 260 };
 261
 262 static inline int hwsim_net_get_netgroup(struct net *net)
 263 {
 264         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 265
 266         return hwsim_net->netgroup;
 267 }
 268
 269 static inline void hwsim_net_set_netgroup(struct net *net)
 270 {
 271         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 272
 273         hwsim_net->netgroup = hwsim_netgroup++;
 274 }
 275
 276 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 277 {
 278         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 279
 280         return hwsim_net->wmediumd;
 281 }
 282
 283 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 284 {
 285         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 286
 287         hwsim_net->wmediumd = portid;
 288 }
 289
 290 static struct class *hwsim_class;
 291
 292 static struct net_device *hwsim_mon; /* global monitor netdev */
 293
 294 #define CHAN2G(_freq)  { \
 295         .band = NL80211_BAND_2GHZ, \
 296         .center_freq = (_freq), \
 297         .hw_value = (_freq), \
 298         .max_power = 20, \
 299 }
 300
 301 #define CHAN5G(_freq) { \
 302         .band = NL80211_BAND_5GHZ, \
 303         .center_freq = (_freq), \
 304         .hw_value = (_freq), \
 305         .max_power = 20, \
 306 }
 307
 308 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 309         CHAN2G(2412), /* Channel 1 */
 310         CHAN2G(2417), /* Channel 2 */
 311         CHAN2G(2422), /* Channel 3 */
 312         CHAN2G(2427), /* Channel 4 */
 313         CHAN2G(2432), /* Channel 5 */
 314         CHAN2G(2437), /* Channel 6 */
 315         CHAN2G(2442), /* Channel 7 */
 316         CHAN2G(2447), /* Channel 8 */
 317         CHAN2G(2452), /* Channel 9 */
 318         CHAN2G(2457), /* Channel 10 */
 319         CHAN2G(2462), /* Channel 11 */
 320         CHAN2G(2467), /* Channel 12 */
 321         CHAN2G(2472), /* Channel 13 */
 322         CHAN2G(2484), /* Channel 14 */
 323 };
 324
 325 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 326         CHAN5G(5180), /* Channel 36 */
 327         CHAN5G(5200), /* Channel 40 */
 328         CHAN5G(5220), /* Channel 44 */
 329         CHAN5G(5240), /* Channel 48 */
 330
 331         CHAN5G(5260), /* Channel 52 */
 332         CHAN5G(5280), /* Channel 56 */
 333         CHAN5G(5300), /* Channel 60 */
 334         CHAN5G(5320), /* Channel 64 */
 335
 336         CHAN5G(5500), /* Channel 100 */
 337         CHAN5G(5520), /* Channel 104 */
 338         CHAN5G(5540), /* Channel 108 */
 339         CHAN5G(5560), /* Channel 112 */
 340         CHAN5G(5580), /* Channel 116 */
 341         CHAN5G(5600), /* Channel 120 */
 342         CHAN5G(5620), /* Channel 124 */
 343         CHAN5G(5640), /* Channel 128 */
 344         CHAN5G(5660), /* Channel 132 */
 345         CHAN5G(5680), /* Channel 136 */
 346         CHAN5G(5700), /* Channel 140 */
 347
 348         CHAN5G(5745), /* Channel 149 */
 349         CHAN5G(5765), /* Channel 153 */
 350         CHAN5G(5785), /* Channel 157 */
 351         CHAN5G(5805), /* Channel 161 */
 352         CHAN5G(5825), /* Channel 165 */
 353         CHAN5G(5845), /* Channel 169 */
 354 };
 355
 356 static const struct ieee80211_rate hwsim_rates[] = {
 357         { .bitrate = 10 },
 358         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 359         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 360         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 361         { .bitrate = 60 },
 362         { .bitrate = 90 },
 363         { .bitrate = 120 },
 364         { .bitrate = 180 },
 365         { .bitrate = 240 },
 366         { .bitrate = 360 },
 367         { .bitrate = 480 },
 368         { .bitrate = 540 }
 369 };
 370
 371 #define OUI_QCA 0x001374
 372 #define QCA_NL80211_SUBCMD_TEST 1
 373 enum qca_nl80211_vendor_subcmds {
 374         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 375         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 376 };
 377
 378 static const struct nla_policy
 379 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 380         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 381 };
 382
 383 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 384                                           struct wireless_dev *wdev,
 385                                           const void *data, int data_len)
 386 {
 387         struct sk_buff *skb;
 388         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 389         int err;
 390         u32 val;
 391
 392         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
 393                         hwsim_vendor_test_policy);
 394         if (err)
 395                 return err;
 396         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 397                 return -EINVAL;
 398         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 399         wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
 400
 401         /* Send a vendor event as a test. Note that this would not normally be
 402          * done within a command handler, but rather, based on some other
 403          * trigger. For simplicity, this command is used to trigger the event
 404          * here.
 405          *
 406          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 407          */
 408         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 409         if (skb) {
 410                 /* skb_put() or nla_put() will fill up data within
 411                  * NL80211_ATTR_VENDOR_DATA.
 412                  */
 413
 414                 /* Add vendor data */
 415                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 416
 417                 /* Send the event - this will call nla_nest_end() */
 418                 cfg80211_vendor_event(skb, GFP_KERNEL);
 419         }
 420
 421         /* Send a response to the command */
 422         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 423         if (!skb)
 424                 return -ENOMEM;
 425
 426         /* skb_put() or nla_put() will fill up data within
 427          * NL80211_ATTR_VENDOR_DATA
 428          */
 429         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 430
 431         return cfg80211_vendor_cmd_reply(skb);
 432 }
 433
 434 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 435         {
 436                 .info = { .vendor_id = OUI_QCA,
 437                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 438                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 439                 .doit = mac80211_hwsim_vendor_cmd_test,
 440         }
 441 };
 442
 443 /* Advertise support vendor specific events */
 444 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 445         { .vendor_id = OUI_QCA, .subcmd = 1 },
 446 };
 447
 448 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 449         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 450         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 451                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 452 #ifdef CONFIG_MAC80211_MESH
 453                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 454 #endif
 455                                  BIT(NL80211_IFTYPE_AP) |
 456                                  BIT(NL80211_IFTYPE_P2P_GO) },
 457         /* must be last, see hwsim_if_comb */
 458         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 459 };
 460
 461 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 462         {
 463                 .limits = hwsim_if_limits,
 464                 /* remove the last entry which is P2P_DEVICE */
 465                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 466                 .max_interfaces = 2048,
 467                 .num_different_channels = 1,
 468                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 469                                        BIT(NL80211_CHAN_WIDTH_20) |
 470                                        BIT(NL80211_CHAN_WIDTH_40) |
 471                                        BIT(NL80211_CHAN_WIDTH_80) |
 472                                        BIT(NL80211_CHAN_WIDTH_160),
 473         },
 474 };
 475
 476 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 477         {
 478                 .limits = hwsim_if_limits,
 479                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 480                 .max_interfaces = 2048,
 481                 .num_different_channels = 1,
 482                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 483                                        BIT(NL80211_CHAN_WIDTH_20) |
 484                                        BIT(NL80211_CHAN_WIDTH_40) |
 485                                        BIT(NL80211_CHAN_WIDTH_80) |
 486                                        BIT(NL80211_CHAN_WIDTH_160),
 487         },
 488 };
 489
 490 static spinlock_t hwsim_radio_lock;
 491 static LIST_HEAD(hwsim_radios);
 492 static int hwsim_radio_idx;
 493
 494 static struct platform_driver mac80211_hwsim_driver = {
 495         .driver = {
 496                 .name = "mac80211_hwsim",
 497         },
 498 };
 499
 500 struct mac80211_hwsim_data {
 501         struct list_head list;
 502         struct ieee80211_hw *hw;
 503         struct device *dev;
 504         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 505         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 506         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 507         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 508         struct ieee80211_iface_combination if_combination;
 509
 510         struct mac_address addresses[2];
 511         int channels, idx;
 512         bool use_chanctx;
 513         bool destroy_on_close;
 514         struct work_struct destroy_work;
 515         u32 portid;
 516         char alpha2[2];
 517         const struct ieee80211_regdomain *regd;
 518
 519         struct ieee80211_channel *tmp_chan;
 520         struct ieee80211_channel *roc_chan;
 521         u32 roc_duration;
 522         struct delayed_work roc_start;
 523         struct delayed_work roc_done;
 524         struct delayed_work hw_scan;
 525         struct cfg80211_scan_request *hw_scan_request;
 526         struct ieee80211_vif *hw_scan_vif;
 527         int scan_chan_idx;
 528         u8 scan_addr[ETH_ALEN];
 529         struct {
 530                 struct ieee80211_channel *channel;
 531                 unsigned long next_start, start, end;
 532         } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 533                       ARRAY_SIZE(hwsim_channels_5ghz)];
 534
 535         struct ieee80211_channel *channel;
 536         u64 beacon_int  /* beacon interval in us */;
 537         unsigned int rx_filter;
 538         bool started, idle, scanning;
 539         struct mutex mutex;
 540         struct tasklet_hrtimer beacon_timer;
 541         enum ps_mode {
 542                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 543         } ps;
 544         bool ps_poll_pending;
 545         struct dentry *debugfs;
 546
 547         uintptr_t pending_cookie;
 548         struct sk_buff_head pending;    /* packets pending */
 549         /*
 550          * Only radios in the same group can communicate together (the
 551          * channel has to match too). Each bit represents a group. A
 552          * radio can be in more than one group.
 553          */
 554         u64 group;
 555
 556         /* group shared by radios created in the same netns */
 557         int netgroup;
 558         /* wmediumd portid responsible for netgroup of this radio */
 559         u32 wmediumd;
 560
 561         int power_level;
 562
 563         /* difference between this hw's clock and the real clock, in usecs */
 564         s64 tsf_offset;
 565         s64 bcn_delta;
 566         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 567         u64 abs_bcn_ts;
 568
 569         /* Stats */
 570         u64 tx_pkts;
 571         u64 rx_pkts;
 572         u64 tx_bytes;
 573         u64 rx_bytes;
 574         u64 tx_dropped;
 575         u64 tx_failed;
 576 };
 577
 578
 579 struct hwsim_radiotap_hdr {
 580         struct ieee80211_radiotap_header hdr;
 581         __le64 rt_tsft;
 582         u8 rt_flags;
 583         u8 rt_rate;
 584         __le16 rt_channel;
 585         __le16 rt_chbitmask;
 586 } __packed;
 587
 588 struct hwsim_radiotap_ack_hdr {
 589         struct ieee80211_radiotap_header hdr;
 590         u8 rt_flags;
 591         u8 pad;
 592         __le16 rt_channel;
 593         __le16 rt_chbitmask;
 594 } __packed;
 595
 596 /* MAC80211_HWSIM netlink family */
 597 static struct genl_family hwsim_genl_family;
 598
 599 enum hwsim_multicast_groups {
 600         HWSIM_MCGRP_CONFIG,
 601 };
 602
 603 static const struct genl_multicast_group hwsim_mcgrps[] = {
 604         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 605 };
 606
 607 /* MAC80211_HWSIM netlink policy */
 608
 609 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 610         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 611         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 612         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 613                                .len = IEEE80211_MAX_DATA_LEN },
 614         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 615         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 616         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 617         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 618                                  .len = IEEE80211_TX_MAX_RATES *
 619                                         sizeof(struct hwsim_tx_rate)},
 620         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 621         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 622         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 623         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 624         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 625         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 626         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 627         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 628         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 629         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 630         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 631 };
 632
 633 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 634                                     struct sk_buff *skb,
 635                                     struct ieee80211_channel *chan);
 636
 637 /* sysfs attributes */
 638 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 639 {
 640         struct mac80211_hwsim_data *data = dat;
 641         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 642         struct sk_buff *skb;
 643         struct ieee80211_pspoll *pspoll;
 644
 645         if (!vp->assoc)
 646                 return;
 647
 648         wiphy_debug(data->hw->wiphy,
 649                     "%s: send PS-Poll to %pM for aid %d\n",
 650                     __func__, vp->bssid, vp->aid);
 651
 652         skb = dev_alloc_skb(sizeof(*pspoll));
 653         if (!skb)
 654                 return;
 655         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 656         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 657                                             IEEE80211_STYPE_PSPOLL |
 658                                             IEEE80211_FCTL_PM);
 659         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 660         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 661         memcpy(pspoll->ta, mac, ETH_ALEN);
 662
 663         rcu_read_lock();
 664         mac80211_hwsim_tx_frame(data->hw, skb,
 665                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 666         rcu_read_unlock();
 667 }
 668
 669 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 670                                 struct ieee80211_vif *vif, int ps)
 671 {
 672         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 673         struct sk_buff *skb;
 674         struct ieee80211_hdr *hdr;
 675
 676         if (!vp->assoc)
 677                 return;
 678
 679         wiphy_debug(data->hw->wiphy,
 680                     "%s: send data::nullfunc to %pM ps=%d\n",
 681                     __func__, vp->bssid, ps);
 682
 683         skb = dev_alloc_skb(sizeof(*hdr));
 684         if (!skb)
 685                 return;
 686         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 687         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 688                                          IEEE80211_STYPE_NULLFUNC |
 689                                          (ps ? IEEE80211_FCTL_PM : 0));
 690         hdr->duration_id = cpu_to_le16(0);
 691         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 692         memcpy(hdr->addr2, mac, ETH_ALEN);
 693         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 694
 695         rcu_read_lock();
 696         mac80211_hwsim_tx_frame(data->hw, skb,
 697                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 698         rcu_read_unlock();
 699 }
 700
 701
 702 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 703                                    struct ieee80211_vif *vif)
 704 {
 705         struct mac80211_hwsim_data *data = dat;
 706         hwsim_send_nullfunc(data, mac, vif, 1);
 707 }
 708
 709 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 710                                       struct ieee80211_vif *vif)
 711 {
 712         struct mac80211_hwsim_data *data = dat;
 713         hwsim_send_nullfunc(data, mac, vif, 0);
 714 }
 715
 716 static int hwsim_fops_ps_read(void *dat, u64 *val)
 717 {
 718         struct mac80211_hwsim_data *data = dat;
 719         *val = data->ps;
 720         return 0;
 721 }
 722
 723 static int hwsim_fops_ps_write(void *dat, u64 val)
 724 {
 725         struct mac80211_hwsim_data *data = dat;
 726         enum ps_mode old_ps;
 727
 728         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 729             val != PS_MANUAL_POLL)
 730                 return -EINVAL;
 731
 732         old_ps = data->ps;
 733         data->ps = val;
 734
 735         local_bh_disable();
 736         if (val == PS_MANUAL_POLL) {
 737                 ieee80211_iterate_active_interfaces_atomic(
 738                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 739                         hwsim_send_ps_poll, data);
 740                 data->ps_poll_pending = true;
 741         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 742                 ieee80211_iterate_active_interfaces_atomic(
 743                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 744                         hwsim_send_nullfunc_ps, data);
 745         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 746                 ieee80211_iterate_active_interfaces_atomic(
 747                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 748                         hwsim_send_nullfunc_no_ps, data);
 749         }
 750         local_bh_enable();
 751
 752         return 0;
 753 }
 754
 755 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 756                         "%llu\n");
 757
 758 static int hwsim_write_simulate_radar(void *dat, u64 val)
 759 {
 760         struct mac80211_hwsim_data *data = dat;
 761
 762         ieee80211_radar_detected(data->hw);
 763
 764         return 0;
 765 }
 766
 767 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 768                         hwsim_write_simulate_radar, "%llu\n");
 769
 770 static int hwsim_fops_group_read(void *dat, u64 *val)
 771 {
 772         struct mac80211_hwsim_data *data = dat;
 773         *val = data->group;
 774         return 0;
 775 }
 776
 777 static int hwsim_fops_group_write(void *dat, u64 val)
 778 {
 779         struct mac80211_hwsim_data *data = dat;
 780         data->group = val;
 781         return 0;
 782 }
 783
 784 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 785                         hwsim_fops_group_read, hwsim_fops_group_write,
 786                         "%llx\n");
 787
 788 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 789                                         struct net_device *dev)
 790 {
 791         /* TODO: allow packet injection */
 792         dev_kfree_skb(skb);
 793         return NETDEV_TX_OK;
 794 }
 795
 796 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 797 {
 798         return ktime_to_us(ktime_get_real());
 799 }
 800
 801 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 802 {
 803         u64 now = mac80211_hwsim_get_tsf_raw();
 804         return cpu_to_le64(now + data->tsf_offset);
 805 }
 806
 807 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 808                                   struct ieee80211_vif *vif)
 809 {
 810         struct mac80211_hwsim_data *data = hw->priv;
 811         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 812 }
 813
 814 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 815                 struct ieee80211_vif *vif, u64 tsf)
 816 {
 817         struct mac80211_hwsim_data *data = hw->priv;
 818         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 819         u32 bcn_int = data->beacon_int;
 820         u64 delta = abs(tsf - now);
 821
 822         /* adjust after beaconing with new timestamp at old TBTT */
 823         if (tsf > now) {
 824                 data->tsf_offset += delta;
 825                 data->bcn_delta = do_div(delta, bcn_int);
 826         } else {
 827                 data->tsf_offset -= delta;
 828                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 829         }
 830 }
 831
 832 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 833                                       struct sk_buff *tx_skb,
 834                                       struct ieee80211_channel *chan)
 835 {
 836         struct mac80211_hwsim_data *data = hw->priv;
 837         struct sk_buff *skb;
 838         struct hwsim_radiotap_hdr *hdr;
 839         u16 flags;
 840         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 841         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 842
 843         if (WARN_ON(!txrate))
 844                 return;
 845
 846         if (!netif_running(hwsim_mon))
 847                 return;
 848
 849         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 850         if (skb == NULL)
 851                 return;
 852
 853         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 854         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 855         hdr->hdr.it_pad = 0;
 856         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 857         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 858                                           (1 << IEEE80211_RADIOTAP_RATE) |
 859                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 860                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 861         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 862         hdr->rt_flags = 0;
 863         hdr->rt_rate = txrate->bitrate / 5;
 864         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 865         flags = IEEE80211_CHAN_2GHZ;
 866         if (txrate->flags & IEEE80211_RATE_ERP_G)
 867                 flags |= IEEE80211_CHAN_OFDM;
 868         else
 869                 flags |= IEEE80211_CHAN_CCK;
 870         hdr->rt_chbitmask = cpu_to_le16(flags);
 871
 872         skb->dev = hwsim_mon;
 873         skb_reset_mac_header(skb);
 874         skb->ip_summed = CHECKSUM_UNNECESSARY;
 875         skb->pkt_type = PACKET_OTHERHOST;
 876         skb->protocol = htons(ETH_P_802_2);
 877         memset(skb->cb, 0, sizeof(skb->cb));
 878         netif_rx(skb);
 879 }
 880
 881
 882 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 883                                        const u8 *addr)
 884 {
 885         struct sk_buff *skb;
 886         struct hwsim_radiotap_ack_hdr *hdr;
 887         u16 flags;
 888         struct ieee80211_hdr *hdr11;
 889
 890         if (!netif_running(hwsim_mon))
 891                 return;
 892
 893         skb = dev_alloc_skb(100);
 894         if (skb == NULL)
 895                 return;
 896
 897         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 898         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 899         hdr->hdr.it_pad = 0;
 900         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 901         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 902                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 903         hdr->rt_flags = 0;
 904         hdr->pad = 0;
 905         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 906         flags = IEEE80211_CHAN_2GHZ;
 907         hdr->rt_chbitmask = cpu_to_le16(flags);
 908
 909         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 910         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 911                                            IEEE80211_STYPE_ACK);
 912         hdr11->duration_id = cpu_to_le16(0);
 913         memcpy(hdr11->addr1, addr, ETH_ALEN);
 914
 915         skb->dev = hwsim_mon;
 916         skb_reset_mac_header(skb);
 917         skb->ip_summed = CHECKSUM_UNNECESSARY;
 918         skb->pkt_type = PACKET_OTHERHOST;
 919         skb->protocol = htons(ETH_P_802_2);
 920         memset(skb->cb, 0, sizeof(skb->cb));
 921         netif_rx(skb);
 922 }
 923
 924 struct mac80211_hwsim_addr_match_data {
 925         u8 addr[ETH_ALEN];
 926         bool ret;
 927 };
 928
 929 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 930                                      struct ieee80211_vif *vif)
 931 {
 932         struct mac80211_hwsim_addr_match_data *md = data;
 933
 934         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 935                 md->ret = true;
 936 }
 937
 938 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 939                                       const u8 *addr)
 940 {
 941         struct mac80211_hwsim_addr_match_data md = {
 942                 .ret = false,
 943         };
 944
 945         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 946                 return true;
 947
 948         memcpy(md.addr, addr, ETH_ALEN);
 949
 950         ieee80211_iterate_active_interfaces_atomic(data->hw,
 951                                                    IEEE80211_IFACE_ITER_NORMAL,
 952                                                    mac80211_hwsim_addr_iter,
 953                                                    &md);
 954
 955         return md.ret;
 956 }
 957
 958 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 959                            struct sk_buff *skb)
 960 {
 961         switch (data->ps) {
 962         case PS_DISABLED:
 963                 return true;
 964         case PS_ENABLED:
 965                 return false;
 966         case PS_AUTO_POLL:
 967                 /* TODO: accept (some) Beacons by default and other frames only
 968                  * if pending PS-Poll has been sent */
 969                 return true;
 970         case PS_MANUAL_POLL:
 971                 /* Allow unicast frames to own address if there is a pending
 972                  * PS-Poll */
 973                 if (data->ps_poll_pending &&
 974                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 975                         data->ps_poll_pending = false;
 976                         return true;
 977                 }
 978                 return false;
 979         }
 980
 981         return true;
 982 }
 983
 984 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 985                                   struct sk_buff *skb, int portid)
 986 {
 987         struct net *net;
 988         bool found = false;
 989         int res = -ENOENT;
 990
 991         rcu_read_lock();
 992         for_each_net_rcu(net) {
 993                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 994                         res = genlmsg_unicast(net, skb, portid);
 995                         found = true;
 996                         break;
 997                 }
 998         }
 999         rcu_read_unlock();
1000
1001         if (!found)
1002                 nlmsg_free(skb);
1003
1004         return res;
1005 }
1006
1007 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1008                                        struct sk_buff *my_skb,
1009                                        int dst_portid)
1010 {
1011         struct sk_buff *skb;
1012         struct mac80211_hwsim_data *data = hw->priv;
1013         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1014         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1015         void *msg_head;
1016         unsigned int hwsim_flags = 0;
1017         int i;
1018         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1019         uintptr_t cookie;
1020
1021         if (data->ps != PS_DISABLED)
1022                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1023         /* If the queue contains MAX_QUEUE skb's drop some */
1024         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1025                 /* Droping until WARN_QUEUE level */
1026                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1027                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1028                         data->tx_dropped++;
1029                 }
1030         }
1031
1032         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1033         if (skb == NULL)
1034                 goto nla_put_failure;
1035
1036         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1037                                HWSIM_CMD_FRAME);
1038         if (msg_head == NULL) {
1039                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1040                 goto nla_put_failure;
1041         }
1042
1043         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1044                     ETH_ALEN, data->addresses[1].addr))
1045                 goto nla_put_failure;
1046
1047         /* We get the skb->data */
1048         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1049                 goto nla_put_failure;
1050
1051         /* We get the flags for this transmission, and we translate them to
1052            wmediumd flags  */
1053
1054         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1055                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1056
1057         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1058                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1059
1060         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1061                 goto nla_put_failure;
1062
1063         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1064                 goto nla_put_failure;
1065
1066         /* We get the tx control (rate and retries) info*/
1067
1068         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1069                 tx_attempts[i].idx = info->status.rates[i].idx;
1070                 tx_attempts[i].count = info->status.rates[i].count;
1071         }
1072
1073         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1074                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1075                     tx_attempts))
1076                 goto nla_put_failure;
1077
1078         /* We create a cookie to identify this skb */
1079         data->pending_cookie++;
1080         cookie = data->pending_cookie;
1081         info->rate_driver_data[0] = (void *)cookie;
1082         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1083                 goto nla_put_failure;
1084
1085         genlmsg_end(skb, msg_head);
1086         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1087                 goto err_free_txskb;
1088
1089         /* Enqueue the packet */
1090         skb_queue_tail(&data->pending, my_skb);
1091         data->tx_pkts++;
1092         data->tx_bytes += my_skb->len;
1093         return;
1094
1095 nla_put_failure:
1096         nlmsg_free(skb);
1097 err_free_txskb:
1098         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1099         ieee80211_free_txskb(hw, my_skb);
1100         data->tx_failed++;
1101 }
1102
1103 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1104                                struct ieee80211_channel *c2)
1105 {
1106         if (!c1 || !c2)
1107                 return false;
1108
1109         return c1->center_freq == c2->center_freq;
1110 }
1111
1112 struct tx_iter_data {
1113         struct ieee80211_channel *channel;
1114         bool receive;
1115 };
1116
1117 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1118                                    struct ieee80211_vif *vif)
1119 {
1120         struct tx_iter_data *data = _data;
1121
1122         if (!vif->chanctx_conf)
1123                 return;
1124
1125         if (!hwsim_chans_compat(data->channel,
1126                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1127                 return;
1128
1129         data->receive = true;
1130 }
1131
1132 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1133 {
1134         /*
1135          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1136          * e.g. like this:
1137          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1138          * (but you should use a valid OUI, not that)
1139          *
1140          * If anyone wants to 'donate' a radiotap OUI/subns code
1141          * please send a patch removing this #ifdef and changing
1142          * the values accordingly.
1143          */
1144 #ifdef HWSIM_RADIOTAP_OUI
1145         struct ieee80211_vendor_radiotap *rtap;
1146
1147         /*
1148          * Note that this code requires the headroom in the SKB
1149          * that was allocated earlier.
1150          */
1151         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1152         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1153         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1154         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1155         rtap->subns = 127;
1156
1157         /*
1158          * Radiotap vendor namespaces can (and should) also be
1159          * split into fields by using the standard radiotap
1160          * presence bitmap mechanism. Use just BIT(0) here for
1161          * the presence bitmap.
1162          */
1163         rtap->present = BIT(0);
1164         /* We have 8 bytes of (dummy) data */
1165         rtap->len = 8;
1166         /* For testing, also require it to be aligned */
1167         rtap->align = 8;
1168         /* And also test that padding works, 4 bytes */
1169         rtap->pad = 4;
1170         /* push the data */
1171         memcpy(rtap->data, "ABCDEFGH", 8);
1172         /* make sure to clear padding, mac80211 doesn't */
1173         memset(rtap->data + 8, 0, 4);
1174
1175         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1176 #endif
1177 }
1178
1179 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1180                                           struct sk_buff *skb,
1181                                           struct ieee80211_channel *chan)
1182 {
1183         struct mac80211_hwsim_data *data = hw->priv, *data2;
1184         bool ack = false;
1185         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1186         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1187         struct ieee80211_rx_status rx_status;
1188         u64 now;
1189
1190         memset(&rx_status, 0, sizeof(rx_status));
1191         rx_status.flag |= RX_FLAG_MACTIME_START;
1192         rx_status.freq = chan->center_freq;
1193         rx_status.band = chan->band;
1194         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1195                 rx_status.rate_idx =
1196                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1197                 rx_status.vht_nss =
1198                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1199                 rx_status.flag |= RX_FLAG_VHT;
1200         } else {
1201                 rx_status.rate_idx = info->control.rates[0].idx;
1202                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1203                         rx_status.flag |= RX_FLAG_HT;
1204         }
1205         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1206                 rx_status.flag |= RX_FLAG_40MHZ;
1207         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1208                 rx_status.flag |= RX_FLAG_SHORT_GI;
1209         /* TODO: simulate real signal strength (and optional packet loss) */
1210         rx_status.signal = data->power_level - 50;
1211
1212         if (data->ps != PS_DISABLED)
1213                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1214
1215         /* release the skb's source info */
1216         skb_orphan(skb);
1217         skb_dst_drop(skb);
1218         skb->mark = 0;
1219         secpath_reset(skb);
1220         nf_reset(skb);
1221
1222         /*
1223          * Get absolute mactime here so all HWs RX at the "same time", and
1224          * absolute TX time for beacon mactime so the timestamp matches.
1225          * Giving beacons a different mactime than non-beacons looks messy, but
1226          * it helps the Toffset be exact and a ~10us mactime discrepancy
1227          * probably doesn't really matter.
1228          */
1229         if (ieee80211_is_beacon(hdr->frame_control) ||
1230             ieee80211_is_probe_resp(hdr->frame_control))
1231                 now = data->abs_bcn_ts;
1232         else
1233                 now = mac80211_hwsim_get_tsf_raw();
1234
1235         /* Copy skb to all enabled radios that are on the current frequency */
1236         spin_lock(&hwsim_radio_lock);
1237         list_for_each_entry(data2, &hwsim_radios, list) {
1238                 struct sk_buff *nskb;
1239                 struct tx_iter_data tx_iter_data = {
1240                         .receive = false,
1241                         .channel = chan,
1242                 };
1243
1244                 if (data == data2)
1245                         continue;
1246
1247                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1248                     !hwsim_ps_rx_ok(data2, skb))
1249                         continue;
1250
1251                 if (!(data->group & data2->group))
1252                         continue;
1253
1254                 if (data->netgroup != data2->netgroup)
1255                         continue;
1256
1257                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1258                     !hwsim_chans_compat(chan, data2->channel)) {
1259                         ieee80211_iterate_active_interfaces_atomic(
1260                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1261                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1262                         if (!tx_iter_data.receive)
1263                                 continue;
1264                 }
1265
1266                 /*
1267                  * reserve some space for our vendor and the normal
1268                  * radiotap header, since we're copying anyway
1269                  */
1270                 if (skb->len < PAGE_SIZE && paged_rx) {
1271                         struct page *page = alloc_page(GFP_ATOMIC);
1272
1273                         if (!page)
1274                                 continue;
1275
1276                         nskb = dev_alloc_skb(128);
1277                         if (!nskb) {
1278                                 __free_page(page);
1279                                 continue;
1280                         }
1281
1282                         memcpy(page_address(page), skb->data, skb->len);
1283                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1284                 } else {
1285                         nskb = skb_copy(skb, GFP_ATOMIC);
1286                         if (!nskb)
1287                                 continue;
1288                 }
1289
1290                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1291                         ack = true;
1292
1293                 rx_status.mactime = now + data2->tsf_offset;
1294
1295                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1296
1297                 mac80211_hwsim_add_vendor_rtap(nskb);
1298
1299                 data2->rx_pkts++;
1300                 data2->rx_bytes += nskb->len;
1301                 ieee80211_rx_irqsafe(data2->hw, nskb);
1302         }
1303         spin_unlock(&hwsim_radio_lock);
1304
1305         return ack;
1306 }
1307
1308 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1309                               struct ieee80211_tx_control *control,
1310                               struct sk_buff *skb)
1311 {
1312         struct mac80211_hwsim_data *data = hw->priv;
1313         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1314         struct ieee80211_hdr *hdr = (void *)skb->data;
1315         struct ieee80211_chanctx_conf *chanctx_conf;
1316         struct ieee80211_channel *channel;
1317         bool ack;
1318         u32 _portid;
1319
1320         if (WARN_ON(skb->len < 10)) {
1321                 /* Should not happen; just a sanity check for addr1 use */
1322                 ieee80211_free_txskb(hw, skb);
1323                 return;
1324         }
1325
1326         if (!data->use_chanctx) {
1327                 channel = data->channel;
1328         } else if (txi->hw_queue == 4) {
1329                 channel = data->tmp_chan;
1330         } else {
1331                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1332                 if (chanctx_conf)
1333                         channel = chanctx_conf->def.chan;
1334                 else
1335                         channel = NULL;
1336         }
1337
1338         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1339                 ieee80211_free_txskb(hw, skb);
1340                 return;
1341         }
1342
1343         if (data->idle && !data->tmp_chan) {
1344                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1345                 ieee80211_free_txskb(hw, skb);
1346                 return;
1347         }
1348
1349         if (txi->control.vif)
1350                 hwsim_check_magic(txi->control.vif);
1351         if (control->sta)
1352                 hwsim_check_sta_magic(control->sta);
1353
1354         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1355                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1356                                        txi->control.rates,
1357                                        ARRAY_SIZE(txi->control.rates));
1358
1359         txi->rate_driver_data[0] = channel;
1360
1361         if (skb->len >= 24 + 8 &&
1362             ieee80211_is_probe_resp(hdr->frame_control)) {
1363                 /* fake header transmission time */
1364                 struct ieee80211_mgmt *mgmt;
1365                 struct ieee80211_rate *txrate;
1366                 u64 ts;
1367
1368                 mgmt = (struct ieee80211_mgmt *)skb->data;
1369                 txrate = ieee80211_get_tx_rate(hw, txi);
1370                 ts = mac80211_hwsim_get_tsf_raw();
1371                 mgmt->u.probe_resp.timestamp =
1372                         cpu_to_le64(ts + data->tsf_offset +
1373                                     24 * 8 * 10 / txrate->bitrate);
1374         }
1375
1376         mac80211_hwsim_monitor_rx(hw, skb, channel);
1377
1378         /* wmediumd mode check */
1379         _portid = ACCESS_ONCE(data->wmediumd);
1380
1381         if (_portid)
1382                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1383
1384         /* NO wmediumd detected, perfect medium simulation */
1385         data->tx_pkts++;
1386         data->tx_bytes += skb->len;
1387         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1388
1389         if (ack && skb->len >= 16)
1390                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1391
1392         ieee80211_tx_info_clear_status(txi);
1393
1394         /* frame was transmitted at most favorable rate at first attempt */
1395         txi->control.rates[0].count = 1;
1396         txi->control.rates[1].idx = -1;
1397
1398         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1399                 txi->flags |= IEEE80211_TX_STAT_ACK;
1400         ieee80211_tx_status_irqsafe(hw, skb);
1401 }
1402
1403
1404 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1405 {
1406         struct mac80211_hwsim_data *data = hw->priv;
1407         wiphy_debug(hw->wiphy, "%s\n", __func__);
1408         data->started = true;
1409         return 0;
1410 }
1411
1412
1413 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1414 {
1415         struct mac80211_hwsim_data *data = hw->priv;
1416         data->started = false;
1417         tasklet_hrtimer_cancel(&data->beacon_timer);
1418         wiphy_debug(hw->wiphy, "%s\n", __func__);
1419 }
1420
1421
1422 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1423                                         struct ieee80211_vif *vif)
1424 {
1425         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1426                     __func__, ieee80211_vif_type_p2p(vif),
1427                     vif->addr);
1428         hwsim_set_magic(vif);
1429
1430         vif->cab_queue = 0;
1431         vif->hw_queue[IEEE80211_AC_VO] = 0;
1432         vif->hw_queue[IEEE80211_AC_VI] = 1;
1433         vif->hw_queue[IEEE80211_AC_BE] = 2;
1434         vif->hw_queue[IEEE80211_AC_BK] = 3;
1435
1436         return 0;
1437 }
1438
1439
1440 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1441                                            struct ieee80211_vif *vif,
1442                                            enum nl80211_iftype newtype,
1443                                            bool newp2p)
1444 {
1445         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1446         wiphy_debug(hw->wiphy,
1447                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1448                     __func__, ieee80211_vif_type_p2p(vif),
1449                     newtype, vif->addr);
1450         hwsim_check_magic(vif);
1451
1452         /*
1453          * interface may change from non-AP to AP in
1454          * which case this needs to be set up again
1455          */
1456         vif->cab_queue = 0;
1457
1458         return 0;
1459 }
1460
1461 static void mac80211_hwsim_remove_interface(
1462         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1463 {
1464         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1465                     __func__, ieee80211_vif_type_p2p(vif),
1466                     vif->addr);
1467         hwsim_check_magic(vif);
1468         hwsim_clear_magic(vif);
1469 }
1470
1471 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1472                                     struct sk_buff *skb,
1473                                     struct ieee80211_channel *chan)
1474 {
1475         struct mac80211_hwsim_data *data = hw->priv;
1476         u32 _pid = ACCESS_ONCE(data->wmediumd);
1477
1478         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1479                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1480                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1481                                        txi->control.rates,
1482                                        ARRAY_SIZE(txi->control.rates));
1483         }
1484
1485         mac80211_hwsim_monitor_rx(hw, skb, chan);
1486
1487         if (_pid)
1488                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1489
1490         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1491         dev_kfree_skb(skb);
1492 }
1493
1494 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1495                                      struct ieee80211_vif *vif)
1496 {
1497         struct mac80211_hwsim_data *data = arg;
1498         struct ieee80211_hw *hw = data->hw;
1499         struct ieee80211_tx_info *info;
1500         struct ieee80211_rate *txrate;
1501         struct ieee80211_mgmt *mgmt;
1502         struct sk_buff *skb;
1503
1504         hwsim_check_magic(vif);
1505
1506         if (vif->type != NL80211_IFTYPE_AP &&
1507             vif->type != NL80211_IFTYPE_MESH_POINT &&
1508             vif->type != NL80211_IFTYPE_ADHOC)
1509                 return;
1510
1511         skb = ieee80211_beacon_get(hw, vif);
1512         if (skb == NULL)
1513                 return;
1514         info = IEEE80211_SKB_CB(skb);
1515         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1516                 ieee80211_get_tx_rates(vif, NULL, skb,
1517                                        info->control.rates,
1518                                        ARRAY_SIZE(info->control.rates));
1519
1520         txrate = ieee80211_get_tx_rate(hw, info);
1521
1522         mgmt = (struct ieee80211_mgmt *) skb->data;
1523         /* fake header transmission time */
1524         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1525         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1526                                                data->tsf_offset +
1527                                                24 * 8 * 10 / txrate->bitrate);
1528
1529         mac80211_hwsim_tx_frame(hw, skb,
1530                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1531
1532         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1533                 ieee80211_csa_finish(vif);
1534 }
1535
1536 static enum hrtimer_restart
1537 mac80211_hwsim_beacon(struct hrtimer *timer)
1538 {
1539         struct mac80211_hwsim_data *data =
1540                 container_of(timer, struct mac80211_hwsim_data,
1541                              beacon_timer.timer);
1542         struct ieee80211_hw *hw = data->hw;
1543         u64 bcn_int = data->beacon_int;
1544         ktime_t next_bcn;
1545
1546         if (!data->started)
1547                 goto out;
1548
1549         ieee80211_iterate_active_interfaces_atomic(
1550                 hw, IEEE80211_IFACE_ITER_NORMAL,
1551                 mac80211_hwsim_beacon_tx, data);
1552
1553         /* beacon at new TBTT + beacon interval */
1554         if (data->bcn_delta) {
1555                 bcn_int -= data->bcn_delta;
1556                 data->bcn_delta = 0;
1557         }
1558
1559         next_bcn = ktime_add(hrtimer_get_expires(timer),
1560                              ns_to_ktime(bcn_int * 1000));
1561         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1562 out:
1563         return HRTIMER_NORESTART;
1564 }
1565
1566 static const char * const hwsim_chanwidths[] = {
1567         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1568         [NL80211_CHAN_WIDTH_20] = "ht20",
1569         [NL80211_CHAN_WIDTH_40] = "ht40",
1570         [NL80211_CHAN_WIDTH_80] = "vht80",
1571         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1572         [NL80211_CHAN_WIDTH_160] = "vht160",
1573 };
1574
1575 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1576 {
1577         struct mac80211_hwsim_data *data = hw->priv;
1578         struct ieee80211_conf *conf = &hw->conf;
1579         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1580                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1581                 [IEEE80211_SMPS_OFF] = "off",
1582                 [IEEE80211_SMPS_STATIC] = "static",
1583                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1584         };
1585         int idx;
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         WARN_ON(conf->chandef.chan && data->use_chanctx);
1609
1610         mutex_lock(&data->mutex);
1611         if (data->scanning && conf->chandef.chan) {
1612                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1613                         if (data->survey_data[idx].channel == data->channel) {
1614                                 data->survey_data[idx].start =
1615                                         data->survey_data[idx].next_start;
1616                                 data->survey_data[idx].end = jiffies;
1617                                 break;
1618                         }
1619                 }
1620
1621                 data->channel = conf->chandef.chan;
1622
1623                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1624                         if (data->survey_data[idx].channel &&
1625                             data->survey_data[idx].channel != data->channel)
1626                                 continue;
1627                         data->survey_data[idx].channel = data->channel;
1628                         data->survey_data[idx].next_start = jiffies;
1629                         break;
1630                 }
1631         } else {
1632                 data->channel = conf->chandef.chan;
1633         }
1634         mutex_unlock(&data->mutex);
1635
1636         data->power_level = conf->power_level;
1637         if (!data->started || !data->beacon_int)
1638                 tasklet_hrtimer_cancel(&data->beacon_timer);
1639         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1640                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1641                 u32 bcn_int = data->beacon_int;
1642                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1643
1644                 tasklet_hrtimer_start(&data->beacon_timer,
1645                                       ns_to_ktime(until_tbtt * 1000),
1646                                       HRTIMER_MODE_REL);
1647         }
1648
1649         return 0;
1650 }
1651
1652
1653 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1654                                             unsigned int changed_flags,
1655                                             unsigned int *total_flags,u64 multicast)
1656 {
1657         struct mac80211_hwsim_data *data = hw->priv;
1658
1659         wiphy_debug(hw->wiphy, "%s\n", __func__);
1660
1661         data->rx_filter = 0;
1662         if (*total_flags & FIF_ALLMULTI)
1663                 data->rx_filter |= FIF_ALLMULTI;
1664
1665         *total_flags = data->rx_filter;
1666 }
1667
1668 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1669                                        struct ieee80211_vif *vif)
1670 {
1671         unsigned int *count = data;
1672         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1673
1674         if (vp->bcn_en)
1675                 (*count)++;
1676 }
1677
1678 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1679                                             struct ieee80211_vif *vif,
1680                                             struct ieee80211_bss_conf *info,
1681                                             u32 changed)
1682 {
1683         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1684         struct mac80211_hwsim_data *data = hw->priv;
1685
1686         hwsim_check_magic(vif);
1687
1688         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1689                     __func__, changed, vif->addr);
1690
1691         if (changed & BSS_CHANGED_BSSID) {
1692                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1693                             __func__, info->bssid);
1694                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1695         }
1696
1697         if (changed & BSS_CHANGED_ASSOC) {
1698                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1699                             info->assoc, info->aid);
1700                 vp->assoc = info->assoc;
1701                 vp->aid = info->aid;
1702         }
1703
1704         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1705                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1706                             info->enable_beacon, info->beacon_int);
1707                 vp->bcn_en = info->enable_beacon;
1708                 if (data->started &&
1709                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1710                     info->enable_beacon) {
1711                         u64 tsf, until_tbtt;
1712                         u32 bcn_int;
1713                         data->beacon_int = info->beacon_int * 1024;
1714                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1715                         bcn_int = data->beacon_int;
1716                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1717                         tasklet_hrtimer_start(&data->beacon_timer,
1718                                               ns_to_ktime(until_tbtt * 1000),
1719                                               HRTIMER_MODE_REL);
1720                 } else if (!info->enable_beacon) {
1721                         unsigned int count = 0;
1722                         ieee80211_iterate_active_interfaces_atomic(
1723                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1724                                 mac80211_hwsim_bcn_en_iter, &count);
1725                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1726                                     count);
1727                         if (count == 0) {
1728                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1729                                 data->beacon_int = 0;
1730                         }
1731                 }
1732         }
1733
1734         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1735                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1736                             info->use_cts_prot);
1737         }
1738
1739         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1740                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1741                             info->use_short_preamble);
1742         }
1743
1744         if (changed & BSS_CHANGED_ERP_SLOT) {
1745                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1746         }
1747
1748         if (changed & BSS_CHANGED_HT) {
1749                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1750                             info->ht_operation_mode);
1751         }
1752
1753         if (changed & BSS_CHANGED_BASIC_RATES) {
1754                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1755                             (unsigned long long) info->basic_rates);
1756         }
1757
1758         if (changed & BSS_CHANGED_TXPOWER)
1759                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1760 }
1761
1762 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1763                                   struct ieee80211_vif *vif,
1764                                   struct ieee80211_sta *sta)
1765 {
1766         hwsim_check_magic(vif);
1767         hwsim_set_sta_magic(sta);
1768
1769         return 0;
1770 }
1771
1772 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1773                                      struct ieee80211_vif *vif,
1774                                      struct ieee80211_sta *sta)
1775 {
1776         hwsim_check_magic(vif);
1777         hwsim_clear_sta_magic(sta);
1778
1779         return 0;
1780 }
1781
1782 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1783                                       struct ieee80211_vif *vif,
1784                                       enum sta_notify_cmd cmd,
1785                                       struct ieee80211_sta *sta)
1786 {
1787         hwsim_check_magic(vif);
1788
1789         switch (cmd) {
1790         case STA_NOTIFY_SLEEP:
1791         case STA_NOTIFY_AWAKE:
1792                 /* TODO: make good use of these flags */
1793                 break;
1794         default:
1795                 WARN(1, "Invalid sta notify: %d\n", cmd);
1796                 break;
1797         }
1798 }
1799
1800 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1801                                   struct ieee80211_sta *sta,
1802                                   bool set)
1803 {
1804         hwsim_check_sta_magic(sta);
1805         return 0;
1806 }
1807
1808 static int mac80211_hwsim_conf_tx(
1809         struct ieee80211_hw *hw,
1810         struct ieee80211_vif *vif, u16 queue,
1811         const struct ieee80211_tx_queue_params *params)
1812 {
1813         wiphy_debug(hw->wiphy,
1814                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1815                     __func__, queue,
1816                     params->txop, params->cw_min,
1817                     params->cw_max, params->aifs);
1818         return 0;
1819 }
1820
1821 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1822                                      struct survey_info *survey)
1823 {
1824         struct mac80211_hwsim_data *hwsim = hw->priv;
1825
1826         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1827                 return -ENOENT;
1828
1829         mutex_lock(&hwsim->mutex);
1830         survey->channel = hwsim->survey_data[idx].channel;
1831         if (!survey->channel) {
1832                 mutex_unlock(&hwsim->mutex);
1833                 return -ENOENT;
1834         }
1835
1836         /*
1837          * Magically conjured dummy values --- this is only ok for simulated hardware.
1838          *
1839          * A real driver which cannot determine real values noise MUST NOT
1840          * report any, especially not a magically conjured ones :-)
1841          */
1842         survey->filled = SURVEY_INFO_NOISE_DBM |
1843                          SURVEY_INFO_TIME |
1844                          SURVEY_INFO_TIME_BUSY;
1845         survey->noise = -92;
1846         survey->time =
1847                 jiffies_to_msecs(hwsim->survey_data[idx].end -
1848                                  hwsim->survey_data[idx].start);
1849         /* report 12.5% of channel time is used */
1850         survey->time_busy = survey->time/8;
1851         mutex_unlock(&hwsim->mutex);
1852
1853         return 0;
1854 }
1855
1856 #ifdef CONFIG_NL80211_TESTMODE
1857 /*
1858  * This section contains example code for using netlink
1859  * attributes with the testmode command in nl80211.
1860  */
1861
1862 /* These enums need to be kept in sync with userspace */
1863 enum hwsim_testmode_attr {
1864         __HWSIM_TM_ATTR_INVALID = 0,
1865         HWSIM_TM_ATTR_CMD       = 1,
1866         HWSIM_TM_ATTR_PS        = 2,
1867
1868         /* keep last */
1869         __HWSIM_TM_ATTR_AFTER_LAST,
1870         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1871 };
1872
1873 enum hwsim_testmode_cmd {
1874         HWSIM_TM_CMD_SET_PS             = 0,
1875         HWSIM_TM_CMD_GET_PS             = 1,
1876         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1877         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1878 };
1879
1880 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1881         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1882         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1883 };
1884
1885 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1886                                        struct ieee80211_vif *vif,
1887                                        void *data, int len)
1888 {
1889         struct mac80211_hwsim_data *hwsim = hw->priv;
1890         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1891         struct sk_buff *skb;
1892         int err, ps;
1893
1894         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1895                         hwsim_testmode_policy);
1896         if (err)
1897                 return err;
1898
1899         if (!tb[HWSIM_TM_ATTR_CMD])
1900                 return -EINVAL;
1901
1902         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1903         case HWSIM_TM_CMD_SET_PS:
1904                 if (!tb[HWSIM_TM_ATTR_PS])
1905                         return -EINVAL;
1906                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1907                 return hwsim_fops_ps_write(hwsim, ps);
1908         case HWSIM_TM_CMD_GET_PS:
1909                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1910                                                 nla_total_size(sizeof(u32)));
1911                 if (!skb)
1912                         return -ENOMEM;
1913                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1914                         goto nla_put_failure;
1915                 return cfg80211_testmode_reply(skb);
1916         case HWSIM_TM_CMD_STOP_QUEUES:
1917                 ieee80211_stop_queues(hw);
1918                 return 0;
1919         case HWSIM_TM_CMD_WAKE_QUEUES:
1920                 ieee80211_wake_queues(hw);
1921                 return 0;
1922         default:
1923                 return -EOPNOTSUPP;
1924         }
1925
1926  nla_put_failure:
1927         kfree_skb(skb);
1928         return -ENOBUFS;
1929 }
1930 #endif
1931
1932 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1933                                        struct ieee80211_vif *vif,
1934                                        struct ieee80211_ampdu_params *params)
1935 {
1936         struct ieee80211_sta *sta = params->sta;
1937         enum ieee80211_ampdu_mlme_action action = params->action;
1938         u16 tid = params->tid;
1939
1940         switch (action) {
1941         case IEEE80211_AMPDU_TX_START:
1942                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1943                 break;
1944         case IEEE80211_AMPDU_TX_STOP_CONT:
1945         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1946         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1947                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1948                 break;
1949         case IEEE80211_AMPDU_TX_OPERATIONAL:
1950                 break;
1951         case IEEE80211_AMPDU_RX_START:
1952         case IEEE80211_AMPDU_RX_STOP:
1953                 break;
1954         default:
1955                 return -EOPNOTSUPP;
1956         }
1957
1958         return 0;
1959 }
1960
1961 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1962                                  struct ieee80211_vif *vif,
1963                                  u32 queues, bool drop)
1964 {
1965         /* Not implemented, queues only on kernel side */
1966 }
1967
1968 static void hw_scan_work(struct work_struct *work)
1969 {
1970         struct mac80211_hwsim_data *hwsim =
1971                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1972         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1973         int dwell, i;
1974
1975         mutex_lock(&hwsim->mutex);
1976         if (hwsim->scan_chan_idx >= req->n_channels) {
1977                 struct cfg80211_scan_info info = {
1978                         .aborted = false,
1979                 };
1980
1981                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1982                 ieee80211_scan_completed(hwsim->hw, &info);
1983                 hwsim->hw_scan_request = NULL;
1984                 hwsim->hw_scan_vif = NULL;
1985                 hwsim->tmp_chan = NULL;
1986                 mutex_unlock(&hwsim->mutex);
1987                 return;
1988         }
1989
1990         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1991                     req->channels[hwsim->scan_chan_idx]->center_freq);
1992
1993         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1994         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1995                                       IEEE80211_CHAN_RADAR) ||
1996             !req->n_ssids) {
1997                 dwell = 120;
1998         } else {
1999                 dwell = 30;
2000                 /* send probes */
2001                 for (i = 0; i < req->n_ssids; i++) {
2002                         struct sk_buff *probe;
2003                         struct ieee80211_mgmt *mgmt;
2004
2005                         probe = ieee80211_probereq_get(hwsim->hw,
2006                                                        hwsim->scan_addr,
2007                                                        req->ssids[i].ssid,
2008                                                        req->ssids[i].ssid_len,
2009                                                        req->ie_len);
2010                         if (!probe)
2011                                 continue;
2012
2013                         mgmt = (struct ieee80211_mgmt *) probe->data;
2014                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2015                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2016
2017                         if (req->ie_len)
2018                                 memcpy(skb_put(probe, req->ie_len), req->ie,
2019                                        req->ie_len);
2020
2021                         local_bh_disable();
2022                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2023                                                 hwsim->tmp_chan);
2024                         local_bh_enable();
2025                 }
2026         }
2027         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2028                                      msecs_to_jiffies(dwell));
2029         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2030         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2031         hwsim->survey_data[hwsim->scan_chan_idx].end =
2032                 jiffies + msecs_to_jiffies(dwell);
2033         hwsim->scan_chan_idx++;
2034         mutex_unlock(&hwsim->mutex);
2035 }
2036
2037 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2038                                   struct ieee80211_vif *vif,
2039                                   struct ieee80211_scan_request *hw_req)
2040 {
2041         struct mac80211_hwsim_data *hwsim = hw->priv;
2042         struct cfg80211_scan_request *req = &hw_req->req;
2043
2044         mutex_lock(&hwsim->mutex);
2045         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2046                 mutex_unlock(&hwsim->mutex);
2047                 return -EBUSY;
2048         }
2049         hwsim->hw_scan_request = req;
2050         hwsim->hw_scan_vif = vif;
2051         hwsim->scan_chan_idx = 0;
2052         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2053                 get_random_mask_addr(hwsim->scan_addr,
2054                                      hw_req->req.mac_addr,
2055                                      hw_req->req.mac_addr_mask);
2056         else
2057                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2058         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2059         mutex_unlock(&hwsim->mutex);
2060
2061         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2062
2063         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2064
2065         return 0;
2066 }
2067
2068 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2069                                           struct ieee80211_vif *vif)
2070 {
2071         struct mac80211_hwsim_data *hwsim = hw->priv;
2072         struct cfg80211_scan_info info = {
2073                 .aborted = true,
2074         };
2075
2076         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2077
2078         cancel_delayed_work_sync(&hwsim->hw_scan);
2079
2080         mutex_lock(&hwsim->mutex);
2081         ieee80211_scan_completed(hwsim->hw, &info);
2082         hwsim->tmp_chan = NULL;
2083         hwsim->hw_scan_request = NULL;
2084         hwsim->hw_scan_vif = NULL;
2085         mutex_unlock(&hwsim->mutex);
2086 }
2087
2088 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2089                                    struct ieee80211_vif *vif,
2090                                    const u8 *mac_addr)
2091 {
2092         struct mac80211_hwsim_data *hwsim = hw->priv;
2093
2094         mutex_lock(&hwsim->mutex);
2095
2096         if (hwsim->scanning) {
2097                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2098                 goto out;
2099         }
2100
2101         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2102
2103         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2104         hwsim->scanning = true;
2105         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2106
2107 out:
2108         mutex_unlock(&hwsim->mutex);
2109 }
2110
2111 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2112                                             struct ieee80211_vif *vif)
2113 {
2114         struct mac80211_hwsim_data *hwsim = hw->priv;
2115
2116         mutex_lock(&hwsim->mutex);
2117
2118         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2119         hwsim->scanning = false;
2120         eth_zero_addr(hwsim->scan_addr);
2121
2122         mutex_unlock(&hwsim->mutex);
2123 }
2124
2125 static void hw_roc_start(struct work_struct *work)
2126 {
2127         struct mac80211_hwsim_data *hwsim =
2128                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2129
2130         mutex_lock(&hwsim->mutex);
2131
2132         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2133         hwsim->tmp_chan = hwsim->roc_chan;
2134         ieee80211_ready_on_channel(hwsim->hw);
2135
2136         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2137                                      msecs_to_jiffies(hwsim->roc_duration));
2138
2139         mutex_unlock(&hwsim->mutex);
2140 }
2141
2142 static void hw_roc_done(struct work_struct *work)
2143 {
2144         struct mac80211_hwsim_data *hwsim =
2145                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2146
2147         mutex_lock(&hwsim->mutex);
2148         ieee80211_remain_on_channel_expired(hwsim->hw);
2149         hwsim->tmp_chan = NULL;
2150         mutex_unlock(&hwsim->mutex);
2151
2152         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2153 }
2154
2155 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2156                               struct ieee80211_vif *vif,
2157                               struct ieee80211_channel *chan,
2158                               int duration,
2159                               enum ieee80211_roc_type type)
2160 {
2161         struct mac80211_hwsim_data *hwsim = hw->priv;
2162
2163         mutex_lock(&hwsim->mutex);
2164         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2165                 mutex_unlock(&hwsim->mutex);
2166                 return -EBUSY;
2167         }
2168
2169         hwsim->roc_chan = chan;
2170         hwsim->roc_duration = duration;
2171         mutex_unlock(&hwsim->mutex);
2172
2173         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2174                     chan->center_freq, duration);
2175         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2176
2177         return 0;
2178 }
2179
2180 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2181 {
2182         struct mac80211_hwsim_data *hwsim = hw->priv;
2183
2184         cancel_delayed_work_sync(&hwsim->roc_start);
2185         cancel_delayed_work_sync(&hwsim->roc_done);
2186
2187         mutex_lock(&hwsim->mutex);
2188         hwsim->tmp_chan = NULL;
2189         mutex_unlock(&hwsim->mutex);
2190
2191         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2192
2193         return 0;
2194 }
2195
2196 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2197                                       struct ieee80211_chanctx_conf *ctx)
2198 {
2199         hwsim_set_chanctx_magic(ctx);
2200         wiphy_debug(hw->wiphy,
2201                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2202                     ctx->def.chan->center_freq, ctx->def.width,
2203                     ctx->def.center_freq1, ctx->def.center_freq2);
2204         return 0;
2205 }
2206
2207 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2208                                           struct ieee80211_chanctx_conf *ctx)
2209 {
2210         wiphy_debug(hw->wiphy,
2211                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2212                     ctx->def.chan->center_freq, ctx->def.width,
2213                     ctx->def.center_freq1, ctx->def.center_freq2);
2214         hwsim_check_chanctx_magic(ctx);
2215         hwsim_clear_chanctx_magic(ctx);
2216 }
2217
2218 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2219                                           struct ieee80211_chanctx_conf *ctx,
2220                                           u32 changed)
2221 {
2222         hwsim_check_chanctx_magic(ctx);
2223         wiphy_debug(hw->wiphy,
2224                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2225                     ctx->def.chan->center_freq, ctx->def.width,
2226                     ctx->def.center_freq1, ctx->def.center_freq2);
2227 }
2228
2229 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2230                                              struct ieee80211_vif *vif,
2231                                              struct ieee80211_chanctx_conf *ctx)
2232 {
2233         hwsim_check_magic(vif);
2234         hwsim_check_chanctx_magic(ctx);
2235
2236         return 0;
2237 }
2238
2239 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2240                                                 struct ieee80211_vif *vif,
2241                                                 struct ieee80211_chanctx_conf *ctx)
2242 {
2243         hwsim_check_magic(vif);
2244         hwsim_check_chanctx_magic(ctx);
2245 }
2246
2247 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2248         "tx_pkts_nic",
2249         "tx_bytes_nic",
2250         "rx_pkts_nic",
2251         "rx_bytes_nic",
2252         "d_tx_dropped",
2253         "d_tx_failed",
2254         "d_ps_mode",
2255         "d_group",
2256         "d_tx_power",
2257 };
2258
2259 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2260
2261 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2262                                           struct ieee80211_vif *vif,
2263                                           u32 sset, u8 *data)
2264 {
2265         if (sset == ETH_SS_STATS)
2266                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2267                        sizeof(mac80211_hwsim_gstrings_stats));
2268 }
2269
2270 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2271                                             struct ieee80211_vif *vif, int sset)
2272 {
2273         if (sset == ETH_SS_STATS)
2274                 return MAC80211_HWSIM_SSTATS_LEN;
2275         return 0;
2276 }
2277
2278 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2279                                         struct ieee80211_vif *vif,
2280                                         struct ethtool_stats *stats, u64 *data)
2281 {
2282         struct mac80211_hwsim_data *ar = hw->priv;
2283         int i = 0;
2284
2285         data[i++] = ar->tx_pkts;
2286         data[i++] = ar->tx_bytes;
2287         data[i++] = ar->rx_pkts;
2288         data[i++] = ar->rx_bytes;
2289         data[i++] = ar->tx_dropped;
2290         data[i++] = ar->tx_failed;
2291         data[i++] = ar->ps;
2292         data[i++] = ar->group;
2293         data[i++] = ar->power_level;
2294
2295         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2296 }
2297
2298 #define HWSIM_COMMON_OPS                                        \
2299         .tx = mac80211_hwsim_tx,                                \
2300         .start = mac80211_hwsim_start,                          \
2301         .stop = mac80211_hwsim_stop,                            \
2302         .add_interface = mac80211_hwsim_add_interface,          \
2303         .change_interface = mac80211_hwsim_change_interface,    \
2304         .remove_interface = mac80211_hwsim_remove_interface,    \
2305         .config = mac80211_hwsim_config,                        \
2306         .configure_filter = mac80211_hwsim_configure_filter,    \
2307         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2308         .sta_add = mac80211_hwsim_sta_add,                      \
2309         .sta_remove = mac80211_hwsim_sta_remove,                \
2310         .sta_notify = mac80211_hwsim_sta_notify,                \
2311         .set_tim = mac80211_hwsim_set_tim,                      \
2312         .conf_tx = mac80211_hwsim_conf_tx,                      \
2313         .get_survey = mac80211_hwsim_get_survey,                \
2314         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2315         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2316         .flush = mac80211_hwsim_flush,                          \
2317         .get_tsf = mac80211_hwsim_get_tsf,                      \
2318         .set_tsf = mac80211_hwsim_set_tsf,                      \
2319         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2320         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2321         .get_et_strings = mac80211_hwsim_get_et_strings,
2322
2323 static const struct ieee80211_ops mac80211_hwsim_ops = {
2324         HWSIM_COMMON_OPS
2325         .sw_scan_start = mac80211_hwsim_sw_scan,
2326         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2327 };
2328
2329 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2330         HWSIM_COMMON_OPS
2331         .hw_scan = mac80211_hwsim_hw_scan,
2332         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2333         .sw_scan_start = NULL,
2334         .sw_scan_complete = NULL,
2335         .remain_on_channel = mac80211_hwsim_roc,
2336         .cancel_remain_on_channel = mac80211_hwsim_croc,
2337         .add_chanctx = mac80211_hwsim_add_chanctx,
2338         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2339         .change_chanctx = mac80211_hwsim_change_chanctx,
2340         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2341         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2342 };
2343
2344 struct hwsim_new_radio_params {
2345         unsigned int channels;
2346         const char *reg_alpha2;
2347         const struct ieee80211_regdomain *regd;
2348         bool reg_strict;
2349         bool p2p_device;
2350         bool use_chanctx;
2351         bool destroy_on_close;
2352         const char *hwname;
2353         bool no_vif;
2354 };
2355
2356 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2357                                    struct genl_info *info)
2358 {
2359         if (info)
2360                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2361                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2362         else
2363                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2364                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2365 }
2366
2367 static int append_radio_msg(struct sk_buff *skb, int id,
2368                             struct hwsim_new_radio_params *param)
2369 {
2370         int ret;
2371
2372         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2373         if (ret < 0)
2374                 return ret;
2375
2376         if (param->channels) {
2377                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2378                 if (ret < 0)
2379                         return ret;
2380         }
2381
2382         if (param->reg_alpha2) {
2383                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2384                               param->reg_alpha2);
2385                 if (ret < 0)
2386                         return ret;
2387         }
2388
2389         if (param->regd) {
2390                 int i;
2391
2392                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2393                         if (hwsim_world_regdom_custom[i] != param->regd)
2394                                 continue;
2395
2396                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2397                         if (ret < 0)
2398                                 return ret;
2399                         break;
2400                 }
2401         }
2402
2403         if (param->reg_strict) {
2404                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2405                 if (ret < 0)
2406                         return ret;
2407         }
2408
2409         if (param->p2p_device) {
2410                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2411                 if (ret < 0)
2412                         return ret;
2413         }
2414
2415         if (param->use_chanctx) {
2416                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2417                 if (ret < 0)
2418                         return ret;
2419         }
2420
2421         if (param->hwname) {
2422                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2423                               strlen(param->hwname), param->hwname);
2424                 if (ret < 0)
2425                         return ret;
2426         }
2427
2428         return 0;
2429 }
2430
2431 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2432                                   struct hwsim_new_radio_params *param)
2433 {
2434         struct sk_buff *mcast_skb;
2435         void *data;
2436
2437         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2438         if (!mcast_skb)
2439                 return;
2440
2441         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2442                            HWSIM_CMD_NEW_RADIO);
2443         if (!data)
2444                 goto out_err;
2445
2446         if (append_radio_msg(mcast_skb, id, param) < 0)
2447                 goto out_err;
2448
2449         genlmsg_end(mcast_skb, data);
2450
2451         hwsim_mcast_config_msg(mcast_skb, info);
2452         return;
2453
2454 out_err:
2455         genlmsg_cancel(mcast_skb, data);
2456         nlmsg_free(mcast_skb);
2457 }
2458
2459 static int mac80211_hwsim_new_radio(struct genl_info *info,
2460                                     struct hwsim_new_radio_params *param)
2461 {
2462         int err;
2463         u8 addr[ETH_ALEN];
2464         struct mac80211_hwsim_data *data;
2465         struct ieee80211_hw *hw;
2466         enum nl80211_band band;
2467         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2468         struct net *net;
2469         int idx;
2470
2471         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2472                 return -EINVAL;
2473
2474         spin_lock_bh(&hwsim_radio_lock);
2475         idx = hwsim_radio_idx++;
2476         spin_unlock_bh(&hwsim_radio_lock);
2477
2478         if (param->use_chanctx)
2479                 ops = &mac80211_hwsim_mchan_ops;
2480         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2481         if (!hw) {
2482                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2483                 err = -ENOMEM;
2484                 goto failed;
2485         }
2486
2487         /* ieee80211_alloc_hw_nm may have used a default name */
2488         param->hwname = wiphy_name(hw->wiphy);
2489
2490         if (info)
2491                 net = genl_info_net(info);
2492         else
2493                 net = &init_net;
2494         wiphy_net_set(hw->wiphy, net);
2495
2496         data = hw->priv;
2497         data->hw = hw;
2498
2499         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2500         if (IS_ERR(data->dev)) {
2501                 printk(KERN_DEBUG
2502                        "mac80211_hwsim: device_create failed (%ld)\n",
2503                        PTR_ERR(data->dev));
2504                 err = -ENOMEM;
2505                 goto failed_drvdata;
2506         }
2507         data->dev->driver = &mac80211_hwsim_driver.driver;
2508         err = device_bind_driver(data->dev);
2509         if (err != 0) {
2510                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2511                        err);
2512                 goto failed_bind;
2513         }
2514
2515         skb_queue_head_init(&data->pending);
2516
2517         SET_IEEE80211_DEV(hw, data->dev);
2518         eth_zero_addr(addr);
2519         addr[0] = 0x02;
2520         addr[3] = idx >> 8;
2521         addr[4] = idx;
2522         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2523         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2524         data->addresses[1].addr[0] |= 0x40;
2525         hw->wiphy->n_addresses = 2;
2526         hw->wiphy->addresses = data->addresses;
2527
2528         data->channels = param->channels;
2529         data->use_chanctx = param->use_chanctx;
2530         data->idx = idx;
2531         data->destroy_on_close = param->destroy_on_close;
2532         if (info)
2533                 data->portid = info->snd_portid;
2534
2535         if (data->use_chanctx) {
2536                 hw->wiphy->max_scan_ssids = 255;
2537                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2538                 hw->wiphy->max_remain_on_channel_duration = 1000;
2539                 hw->wiphy->iface_combinations = &data->if_combination;
2540                 if (param->p2p_device)
2541                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2542                 else
2543                         data->if_combination = hwsim_if_comb[0];
2544                 hw->wiphy->n_iface_combinations = 1;
2545                 /* For channels > 1 DFS is not allowed */
2546                 data->if_combination.radar_detect_widths = 0;
2547                 data->if_combination.num_different_channels = data->channels;
2548         } else if (param->p2p_device) {
2549                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2550                 hw->wiphy->n_iface_combinations =
2551                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2552         } else {
2553                 hw->wiphy->iface_combinations = hwsim_if_comb;
2554                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2555         }
2556
2557         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2558         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2559         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2560
2561         hw->queues = 5;
2562         hw->offchannel_tx_hw_queue = 4;
2563         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2564                                      BIT(NL80211_IFTYPE_AP) |
2565                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2566                                      BIT(NL80211_IFTYPE_P2P_GO) |
2567                                      BIT(NL80211_IFTYPE_ADHOC) |
2568                                      BIT(NL80211_IFTYPE_MESH_POINT);
2569
2570         if (param->p2p_device)
2571                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2572
2573         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2574         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2575         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2576         ieee80211_hw_set(hw, QUEUE_CONTROL);
2577         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2578         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2579         ieee80211_hw_set(hw, MFP_CAPABLE);
2580         ieee80211_hw_set(hw, SIGNAL_DBM);
2581         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2582         if (rctbl)
2583                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2584
2585         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2586                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2587                             WIPHY_FLAG_AP_UAPSD |
2588                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2589         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2590                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2591                                NL80211_FEATURE_STATIC_SMPS |
2592                                NL80211_FEATURE_DYNAMIC_SMPS |
2593                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2594         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2595
2596         /* ask mac80211 to reserve space for magic */
2597         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2598         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2599         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2600
2601         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2602                 sizeof(hwsim_channels_2ghz));
2603         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2604                 sizeof(hwsim_channels_5ghz));
2605         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2606
2607         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2608                 struct ieee80211_supported_band *sband = &data->bands[band];
2609                 switch (band) {
2610                 case NL80211_BAND_2GHZ:
2611                         sband->channels = data->channels_2ghz;
2612                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2613                         sband->bitrates = data->rates;
2614                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2615                         break;
2616                 case NL80211_BAND_5GHZ:
2617                         sband->channels = data->channels_5ghz;
2618                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2619                         sband->bitrates = data->rates + 4;
2620                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2621
2622                         sband->vht_cap.vht_supported = true;
2623                         sband->vht_cap.cap =
2624                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2625                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2626                                 IEEE80211_VHT_CAP_RXLDPC |
2627                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2628                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2629                                 IEEE80211_VHT_CAP_TXSTBC |
2630                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2631                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2632                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2633                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2634                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2635                         sband->vht_cap.vht_mcs.rx_mcs_map =
2636                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2637                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2638                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2639                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2640                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2641                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2642                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2643                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2644                         sband->vht_cap.vht_mcs.tx_mcs_map =
2645                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2646                         break;
2647                 default:
2648                         continue;
2649                 }
2650
2651                 sband->ht_cap.ht_supported = true;
2652                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2653                                     IEEE80211_HT_CAP_GRN_FLD |
2654                                     IEEE80211_HT_CAP_SGI_20 |
2655                                     IEEE80211_HT_CAP_SGI_40 |
2656                                     IEEE80211_HT_CAP_DSSSCCK40;
2657                 sband->ht_cap.ampdu_factor = 0x3;
2658                 sband->ht_cap.ampdu_density = 0x6;
2659                 memset(&sband->ht_cap.mcs, 0,
2660                        sizeof(sband->ht_cap.mcs));
2661                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2662                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2663                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2664
2665                 hw->wiphy->bands[band] = sband;
2666         }
2667
2668         /* By default all radios belong to the first group */
2669         data->group = 1;
2670         mutex_init(&data->mutex);
2671
2672         data->netgroup = hwsim_net_get_netgroup(net);
2673
2674         /* Enable frame retransmissions for lossy channels */
2675         hw->max_rates = 4;
2676         hw->max_rate_tries = 11;
2677
2678         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2679         hw->wiphy->n_vendor_commands =
2680                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2681         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2682         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2683
2684         if (param->reg_strict)
2685                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2686         if (param->regd) {
2687                 data->regd = param->regd;
2688                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2689                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2690                 /* give the regulatory workqueue a chance to run */
2691                 schedule_timeout_interruptible(1);
2692         }
2693
2694         if (param->no_vif)
2695                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2696
2697         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2698
2699         err = ieee80211_register_hw(hw);
2700         if (err < 0) {
2701                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2702                        err);
2703                 goto failed_hw;
2704         }
2705
2706         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2707
2708         if (param->reg_alpha2) {
2709                 data->alpha2[0] = param->reg_alpha2[0];
2710                 data->alpha2[1] = param->reg_alpha2[1];
2711                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2712         }
2713
2714         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2715         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2716         debugfs_create_file("group", 0666, data->debugfs, data,
2717                             &hwsim_fops_group);
2718         if (!data->use_chanctx)
2719                 debugfs_create_file("dfs_simulate_radar", 0222,
2720                                     data->debugfs,
2721                                     data, &hwsim_simulate_radar);
2722
2723         tasklet_hrtimer_init(&data->beacon_timer,
2724                              mac80211_hwsim_beacon,
2725                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2726
2727         spin_lock_bh(&hwsim_radio_lock);
2728         list_add_tail(&data->list, &hwsim_radios);
2729         spin_unlock_bh(&hwsim_radio_lock);
2730
2731         if (idx > 0)
2732                 hwsim_mcast_new_radio(idx, info, param);
2733
2734         return idx;
2735
2736 failed_hw:
2737         device_release_driver(data->dev);
2738 failed_bind:
2739         device_unregister(data->dev);
2740 failed_drvdata:
2741         ieee80211_free_hw(hw);
2742 failed:
2743         return err;
2744 }
2745
2746 static void hwsim_mcast_del_radio(int id, const char *hwname,
2747                                   struct genl_info *info)
2748 {
2749         struct sk_buff *skb;
2750         void *data;
2751         int ret;
2752
2753         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2754         if (!skb)
2755                 return;
2756
2757         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2758                            HWSIM_CMD_DEL_RADIO);
2759         if (!data)
2760                 goto error;
2761
2762         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2763         if (ret < 0)
2764                 goto error;
2765
2766         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2767                       hwname);
2768         if (ret < 0)
2769                 goto error;
2770
2771         genlmsg_end(skb, data);
2772
2773         hwsim_mcast_config_msg(skb, info);
2774
2775         return;
2776
2777 error:
2778         nlmsg_free(skb);
2779 }
2780
2781 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2782                                      const char *hwname,
2783                                      struct genl_info *info)
2784 {
2785         hwsim_mcast_del_radio(data->idx, hwname, info);
2786         debugfs_remove_recursive(data->debugfs);
2787         ieee80211_unregister_hw(data->hw);
2788         device_release_driver(data->dev);
2789         device_unregister(data->dev);
2790         ieee80211_free_hw(data->hw);
2791 }
2792
2793 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2794                                     struct mac80211_hwsim_data *data,
2795                                     u32 portid, u32 seq,
2796                                     struct netlink_callback *cb, int flags)
2797 {
2798         void *hdr;
2799         struct hwsim_new_radio_params param = { };
2800         int res = -EMSGSIZE;
2801
2802         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2803                           HWSIM_CMD_GET_RADIO);
2804         if (!hdr)
2805                 return -EMSGSIZE;
2806
2807         if (cb)
2808                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2809
2810         if (data->alpha2[0] && data->alpha2[1])
2811                 param.reg_alpha2 = data->alpha2;
2812
2813         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2814                                         REGULATORY_STRICT_REG);
2815         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2816                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2817         param.use_chanctx = data->use_chanctx;
2818         param.regd = data->regd;
2819         param.channels = data->channels;
2820         param.hwname = wiphy_name(data->hw->wiphy);
2821
2822         res = append_radio_msg(skb, data->idx, &param);
2823         if (res < 0)
2824                 goto out_err;
2825
2826         genlmsg_end(skb, hdr);
2827         return 0;
2828
2829 out_err:
2830         genlmsg_cancel(skb, hdr);
2831         return res;
2832 }
2833
2834 static void mac80211_hwsim_free(void)
2835 {
2836         struct mac80211_hwsim_data *data;
2837
2838         spin_lock_bh(&hwsim_radio_lock);
2839         while ((data = list_first_entry_or_null(&hwsim_radios,
2840                                                 struct mac80211_hwsim_data,
2841                                                 list))) {
2842                 list_del(&data->list);
2843                 spin_unlock_bh(&hwsim_radio_lock);
2844                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2845                                          NULL);
2846                 spin_lock_bh(&hwsim_radio_lock);
2847         }
2848         spin_unlock_bh(&hwsim_radio_lock);
2849         class_destroy(hwsim_class);
2850 }
2851
2852 static const struct net_device_ops hwsim_netdev_ops = {
2853         .ndo_start_xmit         = hwsim_mon_xmit,
2854         .ndo_set_mac_address    = eth_mac_addr,
2855         .ndo_validate_addr      = eth_validate_addr,
2856 };
2857
2858 static void hwsim_mon_setup(struct net_device *dev)
2859 {
2860         dev->netdev_ops = &hwsim_netdev_ops;
2861         dev->destructor = free_netdev;
2862         ether_setup(dev);
2863         dev->priv_flags |= IFF_NO_QUEUE;
2864         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2865         eth_zero_addr(dev->dev_addr);
2866         dev->dev_addr[0] = 0x12;
2867 }
2868
2869 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2870 {
2871         struct mac80211_hwsim_data *data;
2872         bool _found = false;
2873
2874         spin_lock_bh(&hwsim_radio_lock);
2875         list_for_each_entry(data, &hwsim_radios, list) {
2876                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2877                         _found = true;
2878                         break;
2879                 }
2880         }
2881         spin_unlock_bh(&hwsim_radio_lock);
2882
2883         if (!_found)
2884                 return NULL;
2885
2886         return data;
2887 }
2888
2889 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2890 {
2891         struct mac80211_hwsim_data *data;
2892
2893         hwsim_net_set_wmediumd(net, portid);
2894
2895         spin_lock_bh(&hwsim_radio_lock);
2896         list_for_each_entry(data, &hwsim_radios, list) {
2897                 if (data->netgroup == hwsim_net_get_netgroup(net))
2898                         data->wmediumd = portid;
2899         }
2900         spin_unlock_bh(&hwsim_radio_lock);
2901 }
2902
2903 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2904                                            struct genl_info *info)
2905 {
2906
2907         struct ieee80211_hdr *hdr;
2908         struct mac80211_hwsim_data *data2;
2909         struct ieee80211_tx_info *txi;
2910         struct hwsim_tx_rate *tx_attempts;
2911         u64 ret_skb_cookie;
2912         struct sk_buff *skb, *tmp;
2913         const u8 *src;
2914         unsigned int hwsim_flags;
2915         int i;
2916         bool found = false;
2917
2918         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2919             !info->attrs[HWSIM_ATTR_FLAGS] ||
2920             !info->attrs[HWSIM_ATTR_COOKIE] ||
2921             !info->attrs[HWSIM_ATTR_SIGNAL] ||
2922             !info->attrs[HWSIM_ATTR_TX_INFO])
2923                 goto out;
2924
2925         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2926         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2927         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2928
2929         data2 = get_hwsim_data_ref_from_addr(src);
2930         if (!data2)
2931                 goto out;
2932
2933         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2934                 goto out;
2935
2936         if (info->snd_portid != data2->wmediumd)
2937                 goto out;
2938
2939         /* look for the skb matching the cookie passed back from user */
2940         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2941                 u64 skb_cookie;
2942
2943                 txi = IEEE80211_SKB_CB(skb);
2944                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2945
2946                 if (skb_cookie == ret_skb_cookie) {
2947                         skb_unlink(skb, &data2->pending);
2948                         found = true;
2949                         break;
2950                 }
2951         }
2952
2953         /* not found */
2954         if (!found)
2955                 goto out;
2956
2957         /* Tx info received because the frame was broadcasted on user space,
2958          so we get all the necessary info: tx attempts and skb control buff */
2959
2960         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2961                        info->attrs[HWSIM_ATTR_TX_INFO]);
2962
2963         /* now send back TX status */
2964         txi = IEEE80211_SKB_CB(skb);
2965
2966         ieee80211_tx_info_clear_status(txi);
2967
2968         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2969                 txi->status.rates[i].idx = tx_attempts[i].idx;
2970                 txi->status.rates[i].count = tx_attempts[i].count;
2971                 /*txi->status.rates[i].flags = 0;*/
2972         }
2973
2974         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2975
2976         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2977            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2978                 if (skb->len >= 16) {
2979                         hdr = (struct ieee80211_hdr *) skb->data;
2980                         mac80211_hwsim_monitor_ack(data2->channel,
2981                                                    hdr->addr2);
2982                 }
2983                 txi->flags |= IEEE80211_TX_STAT_ACK;
2984         }
2985         ieee80211_tx_status_irqsafe(data2->hw, skb);
2986         return 0;
2987 out:
2988         return -EINVAL;
2989
2990 }
2991
2992 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2993                                           struct genl_info *info)
2994 {
2995         struct mac80211_hwsim_data *data2;
2996         struct ieee80211_rx_status rx_status;
2997         const u8 *dst;
2998         int frame_data_len;
2999         void *frame_data;
3000         struct sk_buff *skb = NULL;
3001
3002         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3003             !info->attrs[HWSIM_ATTR_FRAME] ||
3004             !info->attrs[HWSIM_ATTR_RX_RATE] ||
3005             !info->attrs[HWSIM_ATTR_SIGNAL])
3006                 goto out;
3007
3008         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3009         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3010         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3011
3012         /* Allocate new skb here */
3013         skb = alloc_skb(frame_data_len, GFP_KERNEL);
3014         if (skb == NULL)
3015                 goto err;
3016
3017         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3018                 goto err;
3019
3020         /* Copy the data */
3021         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
3022
3023         data2 = get_hwsim_data_ref_from_addr(dst);
3024         if (!data2)
3025                 goto out;
3026
3027         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3028                 goto out;
3029
3030         if (info->snd_portid != data2->wmediumd)
3031                 goto out;
3032
3033         /* check if radio is configured properly */
3034
3035         if (data2->idle || !data2->started)
3036                 goto out;
3037
3038         /* A frame is received from user space */
3039         memset(&rx_status, 0, sizeof(rx_status));
3040         if (info->attrs[HWSIM_ATTR_FREQ]) {
3041                 /* throw away off-channel packets, but allow both the temporary
3042                  * ("hw" scan/remain-on-channel) and regular channel, since the
3043                  * internal datapath also allows this
3044                  */
3045                 mutex_lock(&data2->mutex);
3046                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3047
3048                 if (rx_status.freq != data2->channel->center_freq &&
3049                     (!data2->tmp_chan ||
3050                      rx_status.freq != data2->tmp_chan->center_freq)) {
3051                         mutex_unlock(&data2->mutex);
3052                         goto out;
3053                 }
3054                 mutex_unlock(&data2->mutex);
3055         } else {
3056                 rx_status.freq = data2->channel->center_freq;
3057         }
3058
3059         rx_status.band = data2->channel->band;
3060         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3061         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3062
3063         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3064         data2->rx_pkts++;
3065         data2->rx_bytes += skb->len;
3066         ieee80211_rx_irqsafe(data2->hw, skb);
3067
3068         return 0;
3069 err:
3070         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3071 out:
3072         dev_kfree_skb(skb);
3073         return -EINVAL;
3074 }
3075
3076 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3077                                       struct genl_info *info)
3078 {
3079         struct net *net = genl_info_net(info);
3080         struct mac80211_hwsim_data *data;
3081         int chans = 1;
3082
3083         spin_lock_bh(&hwsim_radio_lock);
3084         list_for_each_entry(data, &hwsim_radios, list)
3085                 chans = max(chans, data->channels);
3086         spin_unlock_bh(&hwsim_radio_lock);
3087
3088         /* In the future we should revise the userspace API and allow it
3089          * to set a flag that it does support multi-channel, then we can
3090          * let this pass conditionally on the flag.
3091          * For current userspace, prohibit it since it won't work right.
3092          */
3093         if (chans > 1)
3094                 return -EOPNOTSUPP;
3095
3096         if (hwsim_net_get_wmediumd(net))
3097                 return -EBUSY;
3098
3099         hwsim_register_wmediumd(net, info->snd_portid);
3100
3101         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3102                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3103
3104         return 0;
3105 }
3106
3107 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3108 {
3109         struct hwsim_new_radio_params param = { 0 };
3110         const char *hwname = NULL;
3111
3112         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3113         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3114         param.channels = channels;
3115         param.destroy_on_close =
3116                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3117
3118         if (info->attrs[HWSIM_ATTR_CHANNELS])
3119                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3120
3121         if (info->attrs[HWSIM_ATTR_NO_VIF])
3122                 param.no_vif = true;
3123
3124         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3125                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3126                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3127                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3128                 if (!hwname)
3129                         return -ENOMEM;
3130                 param.hwname = hwname;
3131         }
3132
3133         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3134                 param.use_chanctx = true;
3135         else
3136                 param.use_chanctx = (param.channels > 1);
3137
3138         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3139                 param.reg_alpha2 =
3140                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3141
3142         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3143                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3144
3145                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3146                         return -EINVAL;
3147                 param.regd = hwsim_world_regdom_custom[idx];
3148         }
3149
3150         return mac80211_hwsim_new_radio(info, &param);
3151 }
3152
3153 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3154 {
3155         struct mac80211_hwsim_data *data;
3156         s64 idx = -1;
3157         const char *hwname = NULL;
3158
3159         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3160                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3161         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3162                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3163                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3164                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3165                 if (!hwname)
3166                         return -ENOMEM;
3167         } else
3168                 return -EINVAL;
3169
3170         spin_lock_bh(&hwsim_radio_lock);
3171         list_for_each_entry(data, &hwsim_radios, list) {
3172                 if (idx >= 0) {
3173                         if (data->idx != idx)
3174                                 continue;
3175                 } else {
3176                         if (!hwname ||
3177                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3178                                 continue;
3179                 }
3180
3181                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3182                         continue;
3183
3184                 list_del(&data->list);
3185                 spin_unlock_bh(&hwsim_radio_lock);
3186                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3187                                          info);
3188                 kfree(hwname);
3189                 return 0;
3190         }
3191         spin_unlock_bh(&hwsim_radio_lock);
3192
3193         kfree(hwname);
3194         return -ENODEV;
3195 }
3196
3197 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3198 {
3199         struct mac80211_hwsim_data *data;
3200         struct sk_buff *skb;
3201         int idx, res = -ENODEV;
3202
3203         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3204                 return -EINVAL;
3205         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3206
3207         spin_lock_bh(&hwsim_radio_lock);
3208         list_for_each_entry(data, &hwsim_radios, list) {
3209                 if (data->idx != idx)
3210                         continue;
3211
3212                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3213                         continue;
3214
3215                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3216                 if (!skb) {
3217                         res = -ENOMEM;
3218                         goto out_err;
3219                 }
3220
3221                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3222                                                info->snd_seq, NULL, 0);
3223                 if (res < 0) {
3224                         nlmsg_free(skb);
3225                         goto out_err;
3226                 }
3227
3228                 genlmsg_reply(skb, info);
3229                 break;
3230         }
3231
3232 out_err:
3233         spin_unlock_bh(&hwsim_radio_lock);
3234
3235         return res;
3236 }
3237
3238 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3239                                struct netlink_callback *cb)
3240 {
3241         int idx = cb->args[0];
3242         struct mac80211_hwsim_data *data = NULL;
3243         int res;
3244
3245         spin_lock_bh(&hwsim_radio_lock);
3246
3247         if (idx == hwsim_radio_idx)
3248                 goto done;
3249
3250         list_for_each_entry(data, &hwsim_radios, list) {
3251                 if (data->idx < idx)
3252                         continue;
3253
3254                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3255                         continue;
3256
3257                 res = mac80211_hwsim_get_radio(skb, data,
3258                                                NETLINK_CB(cb->skb).portid,
3259                                                cb->nlh->nlmsg_seq, cb,
3260                                                NLM_F_MULTI);
3261                 if (res < 0)
3262                         break;
3263
3264                 idx = data->idx + 1;
3265         }
3266
3267         cb->args[0] = idx;
3268
3269 done:
3270         spin_unlock_bh(&hwsim_radio_lock);
3271         return skb->len;
3272 }
3273
3274 /* Generic Netlink operations array */
3275 static const struct genl_ops hwsim_ops[] = {
3276         {
3277                 .cmd = HWSIM_CMD_REGISTER,
3278                 .policy = hwsim_genl_policy,
3279                 .doit = hwsim_register_received_nl,
3280                 .flags = GENL_UNS_ADMIN_PERM,
3281         },
3282         {
3283                 .cmd = HWSIM_CMD_FRAME,
3284                 .policy = hwsim_genl_policy,
3285                 .doit = hwsim_cloned_frame_received_nl,
3286         },
3287         {
3288                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3289                 .policy = hwsim_genl_policy,
3290                 .doit = hwsim_tx_info_frame_received_nl,
3291         },
3292         {
3293                 .cmd = HWSIM_CMD_NEW_RADIO,
3294                 .policy = hwsim_genl_policy,
3295                 .doit = hwsim_new_radio_nl,
3296                 .flags = GENL_UNS_ADMIN_PERM,
3297         },
3298         {
3299                 .cmd = HWSIM_CMD_DEL_RADIO,
3300                 .policy = hwsim_genl_policy,
3301                 .doit = hwsim_del_radio_nl,
3302                 .flags = GENL_UNS_ADMIN_PERM,
3303         },
3304         {
3305                 .cmd = HWSIM_CMD_GET_RADIO,
3306                 .policy = hwsim_genl_policy,
3307                 .doit = hwsim_get_radio_nl,
3308                 .dumpit = hwsim_dump_radio_nl,
3309         },
3310 };
3311
3312 static struct genl_family hwsim_genl_family __ro_after_init = {
3313         .name = "MAC80211_HWSIM",
3314         .version = 1,
3315         .maxattr = HWSIM_ATTR_MAX,
3316         .netnsok = true,
3317         .module = THIS_MODULE,
3318         .ops = hwsim_ops,
3319         .n_ops = ARRAY_SIZE(hwsim_ops),
3320         .mcgrps = hwsim_mcgrps,
3321         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3322 };
3323
3324 static void destroy_radio(struct work_struct *work)
3325 {
3326         struct mac80211_hwsim_data *data =
3327                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3328
3329         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3330 }
3331
3332 static void remove_user_radios(u32 portid)
3333 {
3334         struct mac80211_hwsim_data *entry, *tmp;
3335
3336         spin_lock_bh(&hwsim_radio_lock);
3337         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3338                 if (entry->destroy_on_close && entry->portid == portid) {
3339                         list_del(&entry->list);
3340                         INIT_WORK(&entry->destroy_work, destroy_radio);
3341                         schedule_work(&entry->destroy_work);
3342                 }
3343         }
3344         spin_unlock_bh(&hwsim_radio_lock);
3345 }
3346
3347 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3348                                          unsigned long state,
3349                                          void *_notify)
3350 {
3351         struct netlink_notify *notify = _notify;
3352
3353         if (state != NETLINK_URELEASE)
3354                 return NOTIFY_DONE;
3355
3356         remove_user_radios(notify->portid);
3357
3358         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3359                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3360                        " socket, switching to perfect channel medium\n");
3361                 hwsim_register_wmediumd(notify->net, 0);
3362         }
3363         return NOTIFY_DONE;
3364
3365 }
3366
3367 static struct notifier_block hwsim_netlink_notifier = {
3368         .notifier_call = mac80211_hwsim_netlink_notify,
3369 };
3370
3371 static int __init hwsim_init_netlink(void)
3372 {
3373         int rc;
3374
3375         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3376
3377         rc = genl_register_family(&hwsim_genl_family);
3378         if (rc)
3379                 goto failure;
3380
3381         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3382         if (rc) {
3383                 genl_unregister_family(&hwsim_genl_family);
3384                 goto failure;
3385         }
3386
3387         return 0;
3388
3389 failure:
3390         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3391         return -EINVAL;
3392 }
3393
3394 static __net_init int hwsim_init_net(struct net *net)
3395 {
3396         hwsim_net_set_netgroup(net);
3397
3398         return 0;
3399 }
3400
3401 static void __net_exit hwsim_exit_net(struct net *net)
3402 {
3403         struct mac80211_hwsim_data *data, *tmp;
3404
3405         spin_lock_bh(&hwsim_radio_lock);
3406         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3407                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3408                         continue;
3409
3410                 /* Radios created in init_net are returned to init_net. */
3411                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3412                         continue;
3413
3414                 list_del(&data->list);
3415                 INIT_WORK(&data->destroy_work, destroy_radio);
3416                 schedule_work(&data->destroy_work);
3417         }
3418         spin_unlock_bh(&hwsim_radio_lock);
3419 }
3420
3421 static struct pernet_operations hwsim_net_ops = {
3422         .init = hwsim_init_net,
3423         .exit = hwsim_exit_net,
3424         .id   = &hwsim_net_id,
3425         .size = sizeof(struct hwsim_net),
3426 };
3427
3428 static void hwsim_exit_netlink(void)
3429 {
3430         /* unregister the notifier */
3431         netlink_unregister_notifier(&hwsim_netlink_notifier);
3432         /* unregister the family */
3433         genl_unregister_family(&hwsim_genl_family);
3434 }
3435
3436 static int __init init_mac80211_hwsim(void)
3437 {
3438         int i, err;
3439
3440         if (radios < 0 || radios > 100)
3441                 return -EINVAL;
3442
3443         if (channels < 1)
3444                 return -EINVAL;
3445
3446         spin_lock_init(&hwsim_radio_lock);
3447
3448         err = register_pernet_device(&hwsim_net_ops);
3449         if (err)
3450                 return err;
3451
3452         err = platform_driver_register(&mac80211_hwsim_driver);
3453         if (err)
3454                 goto out_unregister_pernet;
3455
3456         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3457         if (IS_ERR(hwsim_class)) {
3458                 err = PTR_ERR(hwsim_class);
3459                 goto out_unregister_driver;
3460         }
3461
3462         err = hwsim_init_netlink();
3463         if (err < 0)
3464                 goto out_unregister_driver;
3465
3466         for (i = 0; i < radios; i++) {
3467                 struct hwsim_new_radio_params param = { 0 };
3468
3469                 param.channels = channels;
3470
3471                 switch (regtest) {
3472                 case HWSIM_REGTEST_DIFF_COUNTRY:
3473                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3474                                 param.reg_alpha2 = hwsim_alpha2s[i];
3475                         break;
3476                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3477                         if (!i)
3478                                 param.reg_alpha2 = hwsim_alpha2s[0];
3479                         break;
3480                 case HWSIM_REGTEST_STRICT_ALL:
3481                         param.reg_strict = true;
3482                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3483                         param.reg_alpha2 = hwsim_alpha2s[0];
3484                         break;
3485                 case HWSIM_REGTEST_WORLD_ROAM:
3486                         if (i == 0)
3487                                 param.regd = &hwsim_world_regdom_custom_01;
3488                         break;
3489                 case HWSIM_REGTEST_CUSTOM_WORLD:
3490                         param.regd = &hwsim_world_regdom_custom_01;
3491                         break;
3492                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3493                         if (i == 0)
3494                                 param.regd = &hwsim_world_regdom_custom_01;
3495                         else if (i == 1)
3496                                 param.regd = &hwsim_world_regdom_custom_02;
3497                         break;
3498                 case HWSIM_REGTEST_STRICT_FOLLOW:
3499                         if (i == 0) {
3500                                 param.reg_strict = true;
3501                                 param.reg_alpha2 = hwsim_alpha2s[0];
3502                         }
3503                         break;
3504                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3505                         if (i == 0) {
3506                                 param.reg_strict = true;
3507                                 param.reg_alpha2 = hwsim_alpha2s[0];
3508                         } else if (i == 1) {
3509                                 param.reg_alpha2 = hwsim_alpha2s[1];
3510                         }
3511                         break;
3512                 case HWSIM_REGTEST_ALL:
3513                         switch (i) {
3514                         case 0:
3515                                 param.regd = &hwsim_world_regdom_custom_01;
3516                                 break;
3517                         case 1:
3518                                 param.regd = &hwsim_world_regdom_custom_02;
3519                                 break;
3520                         case 2:
3521                                 param.reg_alpha2 = hwsim_alpha2s[0];
3522                                 break;
3523                         case 3:
3524                                 param.reg_alpha2 = hwsim_alpha2s[1];
3525                                 break;
3526                         case 4:
3527                                 param.reg_strict = true;
3528                                 param.reg_alpha2 = hwsim_alpha2s[2];
3529                                 break;
3530                         }
3531                         break;
3532                 default:
3533                         break;
3534                 }
3535
3536                 param.p2p_device = support_p2p_device;
3537                 param.use_chanctx = channels > 1;
3538
3539                 err = mac80211_hwsim_new_radio(NULL, &param);
3540                 if (err < 0)
3541                         goto out_free_radios;
3542         }
3543
3544         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3545                                  hwsim_mon_setup);
3546         if (hwsim_mon == NULL) {
3547                 err = -ENOMEM;
3548                 goto out_free_radios;
3549         }
3550
3551         rtnl_lock();
3552         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3553         if (err < 0) {
3554                 rtnl_unlock();
3555                 goto out_free_radios;
3556         }
3557
3558         err = register_netdevice(hwsim_mon);
3559         if (err < 0) {
3560                 rtnl_unlock();
3561                 goto out_free_mon;
3562         }
3563         rtnl_unlock();
3564
3565         return 0;
3566
3567 out_free_mon:
3568         free_netdev(hwsim_mon);
3569 out_free_radios:
3570         mac80211_hwsim_free();
3571 out_unregister_driver:
3572         platform_driver_unregister(&mac80211_hwsim_driver);
3573 out_unregister_pernet:
3574         unregister_pernet_device(&hwsim_net_ops);
3575         return err;
3576 }
3577 module_init(init_mac80211_hwsim);
3578
3579 static void __exit exit_mac80211_hwsim(void)
3580 {
3581         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3582
3583         hwsim_exit_netlink();
3584
3585         mac80211_hwsim_free();
3586         unregister_netdev(hwsim_mon);
3587         platform_driver_unregister(&mac80211_hwsim_driver);
3588         unregister_pernet_device(&hwsim_net_ops);
3589 }
3590 module_exit(exit_mac80211_hwsim);