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, NULL);
 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         /* difference between this hw's clock and the real clock, in usecs */
 562         s64 tsf_offset;
 563         s64 bcn_delta;
 564         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 565         u64 abs_bcn_ts;
 566
 567         /* Stats */
 568         u64 tx_pkts;
 569         u64 rx_pkts;
 570         u64 tx_bytes;
 571         u64 rx_bytes;
 572         u64 tx_dropped;
 573         u64 tx_failed;
 574 };
 575
 576
 577 struct hwsim_radiotap_hdr {
 578         struct ieee80211_radiotap_header hdr;
 579         __le64 rt_tsft;
 580         u8 rt_flags;
 581         u8 rt_rate;
 582         __le16 rt_channel;
 583         __le16 rt_chbitmask;
 584 } __packed;
 585
 586 struct hwsim_radiotap_ack_hdr {
 587         struct ieee80211_radiotap_header hdr;
 588         u8 rt_flags;
 589         u8 pad;
 590         __le16 rt_channel;
 591         __le16 rt_chbitmask;
 592 } __packed;
 593
 594 /* MAC80211_HWSIM netlink family */
 595 static struct genl_family hwsim_genl_family;
 596
 597 enum hwsim_multicast_groups {
 598         HWSIM_MCGRP_CONFIG,
 599 };
 600
 601 static const struct genl_multicast_group hwsim_mcgrps[] = {
 602         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 603 };
 604
 605 /* MAC80211_HWSIM netlink policy */
 606
 607 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 608         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 609         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 610         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 611                                .len = IEEE80211_MAX_DATA_LEN },
 612         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 613         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 614         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 615         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 616                                  .len = IEEE80211_TX_MAX_RATES *
 617                                         sizeof(struct hwsim_tx_rate)},
 618         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 619         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 620         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 621         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 622         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 623         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 624         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 625         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 626         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 627         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 628         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 629 };
 630
 631 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 632                                     struct sk_buff *skb,
 633                                     struct ieee80211_channel *chan);
 634
 635 /* sysfs attributes */
 636 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 637 {
 638         struct mac80211_hwsim_data *data = dat;
 639         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 640         struct sk_buff *skb;
 641         struct ieee80211_pspoll *pspoll;
 642
 643         if (!vp->assoc)
 644                 return;
 645
 646         wiphy_debug(data->hw->wiphy,
 647                     "%s: send PS-Poll to %pM for aid %d\n",
 648                     __func__, vp->bssid, vp->aid);
 649
 650         skb = dev_alloc_skb(sizeof(*pspoll));
 651         if (!skb)
 652                 return;
 653         pspoll = skb_put(skb, sizeof(*pspoll));
 654         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 655                                             IEEE80211_STYPE_PSPOLL |
 656                                             IEEE80211_FCTL_PM);
 657         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 658         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 659         memcpy(pspoll->ta, mac, ETH_ALEN);
 660
 661         rcu_read_lock();
 662         mac80211_hwsim_tx_frame(data->hw, skb,
 663                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 664         rcu_read_unlock();
 665 }
 666
 667 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 668                                 struct ieee80211_vif *vif, int ps)
 669 {
 670         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 671         struct sk_buff *skb;
 672         struct ieee80211_hdr *hdr;
 673
 674         if (!vp->assoc)
 675                 return;
 676
 677         wiphy_debug(data->hw->wiphy,
 678                     "%s: send data::nullfunc to %pM ps=%d\n",
 679                     __func__, vp->bssid, ps);
 680
 681         skb = dev_alloc_skb(sizeof(*hdr));
 682         if (!skb)
 683                 return;
 684         hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 685         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 686                                          IEEE80211_STYPE_NULLFUNC |
 687                                          (ps ? IEEE80211_FCTL_PM : 0));
 688         hdr->duration_id = cpu_to_le16(0);
 689         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 690         memcpy(hdr->addr2, mac, ETH_ALEN);
 691         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 692
 693         rcu_read_lock();
 694         mac80211_hwsim_tx_frame(data->hw, skb,
 695                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 696         rcu_read_unlock();
 697 }
 698
 699
 700 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 701                                    struct ieee80211_vif *vif)
 702 {
 703         struct mac80211_hwsim_data *data = dat;
 704         hwsim_send_nullfunc(data, mac, vif, 1);
 705 }
 706
 707 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 708                                       struct ieee80211_vif *vif)
 709 {
 710         struct mac80211_hwsim_data *data = dat;
 711         hwsim_send_nullfunc(data, mac, vif, 0);
 712 }
 713
 714 static int hwsim_fops_ps_read(void *dat, u64 *val)
 715 {
 716         struct mac80211_hwsim_data *data = dat;
 717         *val = data->ps;
 718         return 0;
 719 }
 720
 721 static int hwsim_fops_ps_write(void *dat, u64 val)
 722 {
 723         struct mac80211_hwsim_data *data = dat;
 724         enum ps_mode old_ps;
 725
 726         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 727             val != PS_MANUAL_POLL)
 728                 return -EINVAL;
 729
 730         if (val == PS_MANUAL_POLL) {
 731                 if (data->ps != PS_ENABLED)
 732                         return -EINVAL;
 733                 local_bh_disable();
 734                 ieee80211_iterate_active_interfaces_atomic(
 735                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 736                         hwsim_send_ps_poll, data);
 737                 local_bh_enable();
 738                 return 0;
 739         }
 740         old_ps = data->ps;
 741         data->ps = val;
 742
 743         local_bh_disable();
 744         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 745                 ieee80211_iterate_active_interfaces_atomic(
 746                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 747                         hwsim_send_nullfunc_ps, data);
 748         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 749                 ieee80211_iterate_active_interfaces_atomic(
 750                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 751                         hwsim_send_nullfunc_no_ps, data);
 752         }
 753         local_bh_enable();
 754
 755         return 0;
 756 }
 757
 758 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 759                         "%llu\n");
 760
 761 static int hwsim_write_simulate_radar(void *dat, u64 val)
 762 {
 763         struct mac80211_hwsim_data *data = dat;
 764
 765         ieee80211_radar_detected(data->hw);
 766
 767         return 0;
 768 }
 769
 770 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 771                         hwsim_write_simulate_radar, "%llu\n");
 772
 773 static int hwsim_fops_group_read(void *dat, u64 *val)
 774 {
 775         struct mac80211_hwsim_data *data = dat;
 776         *val = data->group;
 777         return 0;
 778 }
 779
 780 static int hwsim_fops_group_write(void *dat, u64 val)
 781 {
 782         struct mac80211_hwsim_data *data = dat;
 783         data->group = val;
 784         return 0;
 785 }
 786
 787 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 788                         hwsim_fops_group_read, hwsim_fops_group_write,
 789                         "%llx\n");
 790
 791 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 792                                         struct net_device *dev)
 793 {
 794         /* TODO: allow packet injection */
 795         dev_kfree_skb(skb);
 796         return NETDEV_TX_OK;
 797 }
 798
 799 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 800 {
 801         return ktime_to_us(ktime_get_real());
 802 }
 803
 804 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 805 {
 806         u64 now = mac80211_hwsim_get_tsf_raw();
 807         return cpu_to_le64(now + data->tsf_offset);
 808 }
 809
 810 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 811                                   struct ieee80211_vif *vif)
 812 {
 813         struct mac80211_hwsim_data *data = hw->priv;
 814         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 815 }
 816
 817 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 818                 struct ieee80211_vif *vif, u64 tsf)
 819 {
 820         struct mac80211_hwsim_data *data = hw->priv;
 821         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 822         u32 bcn_int = data->beacon_int;
 823         u64 delta = abs(tsf - now);
 824
 825         /* adjust after beaconing with new timestamp at old TBTT */
 826         if (tsf > now) {
 827                 data->tsf_offset += delta;
 828                 data->bcn_delta = do_div(delta, bcn_int);
 829         } else {
 830                 data->tsf_offset -= delta;
 831                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 832         }
 833 }
 834
 835 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 836                                       struct sk_buff *tx_skb,
 837                                       struct ieee80211_channel *chan)
 838 {
 839         struct mac80211_hwsim_data *data = hw->priv;
 840         struct sk_buff *skb;
 841         struct hwsim_radiotap_hdr *hdr;
 842         u16 flags;
 843         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 844         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 845
 846         if (WARN_ON(!txrate))
 847                 return;
 848
 849         if (!netif_running(hwsim_mon))
 850                 return;
 851
 852         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 853         if (skb == NULL)
 854                 return;
 855
 856         hdr = skb_push(skb, sizeof(*hdr));
 857         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 858         hdr->hdr.it_pad = 0;
 859         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 860         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 861                                           (1 << IEEE80211_RADIOTAP_RATE) |
 862                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 863                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 864         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 865         hdr->rt_flags = 0;
 866         hdr->rt_rate = txrate->bitrate / 5;
 867         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 868         flags = IEEE80211_CHAN_2GHZ;
 869         if (txrate->flags & IEEE80211_RATE_ERP_G)
 870                 flags |= IEEE80211_CHAN_OFDM;
 871         else
 872                 flags |= IEEE80211_CHAN_CCK;
 873         hdr->rt_chbitmask = cpu_to_le16(flags);
 874
 875         skb->dev = hwsim_mon;
 876         skb_reset_mac_header(skb);
 877         skb->ip_summed = CHECKSUM_UNNECESSARY;
 878         skb->pkt_type = PACKET_OTHERHOST;
 879         skb->protocol = htons(ETH_P_802_2);
 880         memset(skb->cb, 0, sizeof(skb->cb));
 881         netif_rx(skb);
 882 }
 883
 884
 885 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 886                                        const u8 *addr)
 887 {
 888         struct sk_buff *skb;
 889         struct hwsim_radiotap_ack_hdr *hdr;
 890         u16 flags;
 891         struct ieee80211_hdr *hdr11;
 892
 893         if (!netif_running(hwsim_mon))
 894                 return;
 895
 896         skb = dev_alloc_skb(100);
 897         if (skb == NULL)
 898                 return;
 899
 900         hdr = skb_put(skb, sizeof(*hdr));
 901         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 902         hdr->hdr.it_pad = 0;
 903         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 904         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 905                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 906         hdr->rt_flags = 0;
 907         hdr->pad = 0;
 908         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 909         flags = IEEE80211_CHAN_2GHZ;
 910         hdr->rt_chbitmask = cpu_to_le16(flags);
 911
 912         hdr11 = skb_put(skb, 10);
 913         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 914                                            IEEE80211_STYPE_ACK);
 915         hdr11->duration_id = cpu_to_le16(0);
 916         memcpy(hdr11->addr1, addr, ETH_ALEN);
 917
 918         skb->dev = hwsim_mon;
 919         skb_reset_mac_header(skb);
 920         skb->ip_summed = CHECKSUM_UNNECESSARY;
 921         skb->pkt_type = PACKET_OTHERHOST;
 922         skb->protocol = htons(ETH_P_802_2);
 923         memset(skb->cb, 0, sizeof(skb->cb));
 924         netif_rx(skb);
 925 }
 926
 927 struct mac80211_hwsim_addr_match_data {
 928         u8 addr[ETH_ALEN];
 929         bool ret;
 930 };
 931
 932 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 933                                      struct ieee80211_vif *vif)
 934 {
 935         struct mac80211_hwsim_addr_match_data *md = data;
 936
 937         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 938                 md->ret = true;
 939 }
 940
 941 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 942                                       const u8 *addr)
 943 {
 944         struct mac80211_hwsim_addr_match_data md = {
 945                 .ret = false,
 946         };
 947
 948         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 949                 return true;
 950
 951         memcpy(md.addr, addr, ETH_ALEN);
 952
 953         ieee80211_iterate_active_interfaces_atomic(data->hw,
 954                                                    IEEE80211_IFACE_ITER_NORMAL,
 955                                                    mac80211_hwsim_addr_iter,
 956                                                    &md);
 957
 958         return md.ret;
 959 }
 960
 961 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 962                            struct sk_buff *skb)
 963 {
 964         switch (data->ps) {
 965         case PS_DISABLED:
 966                 return true;
 967         case PS_ENABLED:
 968                 return false;
 969         case PS_AUTO_POLL:
 970                 /* TODO: accept (some) Beacons by default and other frames only
 971                  * if pending PS-Poll has been sent */
 972                 return true;
 973         case PS_MANUAL_POLL:
 974                 /* Allow unicast frames to own address if there is a pending
 975                  * PS-Poll */
 976                 if (data->ps_poll_pending &&
 977                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 978                         data->ps_poll_pending = false;
 979                         return true;
 980                 }
 981                 return false;
 982         }
 983
 984         return true;
 985 }
 986
 987 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 988                                   struct sk_buff *skb, int portid)
 989 {
 990         struct net *net;
 991         bool found = false;
 992         int res = -ENOENT;
 993
 994         rcu_read_lock();
 995         for_each_net_rcu(net) {
 996                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 997                         res = genlmsg_unicast(net, skb, portid);
 998                         found = true;
 999                         break;
1000                 }
1001         }
1002         rcu_read_unlock();
1003
1004         if (!found)
1005                 nlmsg_free(skb);
1006
1007         return res;
1008 }
1009
1010 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1011                                        struct sk_buff *my_skb,
1012                                        int dst_portid)
1013 {
1014         struct sk_buff *skb;
1015         struct mac80211_hwsim_data *data = hw->priv;
1016         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1017         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1018         void *msg_head;
1019         unsigned int hwsim_flags = 0;
1020         int i;
1021         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1022         uintptr_t cookie;
1023
1024         if (data->ps != PS_DISABLED)
1025                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1026         /* If the queue contains MAX_QUEUE skb's drop some */
1027         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1028                 /* Droping until WARN_QUEUE level */
1029                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1030                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1031                         data->tx_dropped++;
1032                 }
1033         }
1034
1035         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1036         if (skb == NULL)
1037                 goto nla_put_failure;
1038
1039         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1040                                HWSIM_CMD_FRAME);
1041         if (msg_head == NULL) {
1042                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1043                 goto nla_put_failure;
1044         }
1045
1046         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1047                     ETH_ALEN, data->addresses[1].addr))
1048                 goto nla_put_failure;
1049
1050         /* We get the skb->data */
1051         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1052                 goto nla_put_failure;
1053
1054         /* We get the flags for this transmission, and we translate them to
1055            wmediumd flags  */
1056
1057         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1058                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1059
1060         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1061                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1062
1063         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1064                 goto nla_put_failure;
1065
1066         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1067                 goto nla_put_failure;
1068
1069         /* We get the tx control (rate and retries) info*/
1070
1071         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1072                 tx_attempts[i].idx = info->status.rates[i].idx;
1073                 tx_attempts[i].count = info->status.rates[i].count;
1074         }
1075
1076         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1077                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1078                     tx_attempts))
1079                 goto nla_put_failure;
1080
1081         /* We create a cookie to identify this skb */
1082         data->pending_cookie++;
1083         cookie = data->pending_cookie;
1084         info->rate_driver_data[0] = (void *)cookie;
1085         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1086                 goto nla_put_failure;
1087
1088         genlmsg_end(skb, msg_head);
1089         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1090                 goto err_free_txskb;
1091
1092         /* Enqueue the packet */
1093         skb_queue_tail(&data->pending, my_skb);
1094         data->tx_pkts++;
1095         data->tx_bytes += my_skb->len;
1096         return;
1097
1098 nla_put_failure:
1099         nlmsg_free(skb);
1100 err_free_txskb:
1101         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1102         ieee80211_free_txskb(hw, my_skb);
1103         data->tx_failed++;
1104 }
1105
1106 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1107                                struct ieee80211_channel *c2)
1108 {
1109         if (!c1 || !c2)
1110                 return false;
1111
1112         return c1->center_freq == c2->center_freq;
1113 }
1114
1115 struct tx_iter_data {
1116         struct ieee80211_channel *channel;
1117         bool receive;
1118 };
1119
1120 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1121                                    struct ieee80211_vif *vif)
1122 {
1123         struct tx_iter_data *data = _data;
1124
1125         if (!vif->chanctx_conf)
1126                 return;
1127
1128         if (!hwsim_chans_compat(data->channel,
1129                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1130                 return;
1131
1132         data->receive = true;
1133 }
1134
1135 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1136 {
1137         /*
1138          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1139          * e.g. like this:
1140          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1141          * (but you should use a valid OUI, not that)
1142          *
1143          * If anyone wants to 'donate' a radiotap OUI/subns code
1144          * please send a patch removing this #ifdef and changing
1145          * the values accordingly.
1146          */
1147 #ifdef HWSIM_RADIOTAP_OUI
1148         struct ieee80211_vendor_radiotap *rtap;
1149
1150         /*
1151          * Note that this code requires the headroom in the SKB
1152          * that was allocated earlier.
1153          */
1154         rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1155         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1156         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1157         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1158         rtap->subns = 127;
1159
1160         /*
1161          * Radiotap vendor namespaces can (and should) also be
1162          * split into fields by using the standard radiotap
1163          * presence bitmap mechanism. Use just BIT(0) here for
1164          * the presence bitmap.
1165          */
1166         rtap->present = BIT(0);
1167         /* We have 8 bytes of (dummy) data */
1168         rtap->len = 8;
1169         /* For testing, also require it to be aligned */
1170         rtap->align = 8;
1171         /* And also test that padding works, 4 bytes */
1172         rtap->pad = 4;
1173         /* push the data */
1174         memcpy(rtap->data, "ABCDEFGH", 8);
1175         /* make sure to clear padding, mac80211 doesn't */
1176         memset(rtap->data + 8, 0, 4);
1177
1178         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1179 #endif
1180 }
1181
1182 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1183                                           struct sk_buff *skb,
1184                                           struct ieee80211_channel *chan)
1185 {
1186         struct mac80211_hwsim_data *data = hw->priv, *data2;
1187         bool ack = false;
1188         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1189         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1190         struct ieee80211_rx_status rx_status;
1191         u64 now;
1192
1193         memset(&rx_status, 0, sizeof(rx_status));
1194         rx_status.flag |= RX_FLAG_MACTIME_START;
1195         rx_status.freq = chan->center_freq;
1196         rx_status.band = chan->band;
1197         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1198                 rx_status.rate_idx =
1199                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1200                 rx_status.nss =
1201                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1202                 rx_status.encoding = RX_ENC_VHT;
1203         } else {
1204                 rx_status.rate_idx = info->control.rates[0].idx;
1205                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1206                         rx_status.encoding = RX_ENC_HT;
1207         }
1208         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1209                 rx_status.bw = RATE_INFO_BW_40;
1210         else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1211                 rx_status.bw = RATE_INFO_BW_80;
1212         else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1213                 rx_status.bw = RATE_INFO_BW_160;
1214         else
1215                 rx_status.bw = RATE_INFO_BW_20;
1216         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1217                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1218         /* TODO: simulate real signal strength (and optional packet loss) */
1219         rx_status.signal = -50;
1220         if (info->control.vif)
1221                 rx_status.signal += info->control.vif->bss_conf.txpower;
1222
1223         if (data->ps != PS_DISABLED)
1224                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1225
1226         /* release the skb's source info */
1227         skb_orphan(skb);
1228         skb_dst_drop(skb);
1229         skb->mark = 0;
1230         secpath_reset(skb);
1231         nf_reset(skb);
1232
1233         /*
1234          * Get absolute mactime here so all HWs RX at the "same time", and
1235          * absolute TX time for beacon mactime so the timestamp matches.
1236          * Giving beacons a different mactime than non-beacons looks messy, but
1237          * it helps the Toffset be exact and a ~10us mactime discrepancy
1238          * probably doesn't really matter.
1239          */
1240         if (ieee80211_is_beacon(hdr->frame_control) ||
1241             ieee80211_is_probe_resp(hdr->frame_control))
1242                 now = data->abs_bcn_ts;
1243         else
1244                 now = mac80211_hwsim_get_tsf_raw();
1245
1246         /* Copy skb to all enabled radios that are on the current frequency */
1247         spin_lock(&hwsim_radio_lock);
1248         list_for_each_entry(data2, &hwsim_radios, list) {
1249                 struct sk_buff *nskb;
1250                 struct tx_iter_data tx_iter_data = {
1251                         .receive = false,
1252                         .channel = chan,
1253                 };
1254
1255                 if (data == data2)
1256                         continue;
1257
1258                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1259                     !hwsim_ps_rx_ok(data2, skb))
1260                         continue;
1261
1262                 if (!(data->group & data2->group))
1263                         continue;
1264
1265                 if (data->netgroup != data2->netgroup)
1266                         continue;
1267
1268                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1269                     !hwsim_chans_compat(chan, data2->channel)) {
1270                         ieee80211_iterate_active_interfaces_atomic(
1271                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1272                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1273                         if (!tx_iter_data.receive)
1274                                 continue;
1275                 }
1276
1277                 /*
1278                  * reserve some space for our vendor and the normal
1279                  * radiotap header, since we're copying anyway
1280                  */
1281                 if (skb->len < PAGE_SIZE && paged_rx) {
1282                         struct page *page = alloc_page(GFP_ATOMIC);
1283
1284                         if (!page)
1285                                 continue;
1286
1287                         nskb = dev_alloc_skb(128);
1288                         if (!nskb) {
1289                                 __free_page(page);
1290                                 continue;
1291                         }
1292
1293                         memcpy(page_address(page), skb->data, skb->len);
1294                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1295                 } else {
1296                         nskb = skb_copy(skb, GFP_ATOMIC);
1297                         if (!nskb)
1298                                 continue;
1299                 }
1300
1301                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1302                         ack = true;
1303
1304                 rx_status.mactime = now + data2->tsf_offset;
1305
1306                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1307
1308                 mac80211_hwsim_add_vendor_rtap(nskb);
1309
1310                 data2->rx_pkts++;
1311                 data2->rx_bytes += nskb->len;
1312                 ieee80211_rx_irqsafe(data2->hw, nskb);
1313         }
1314         spin_unlock(&hwsim_radio_lock);
1315
1316         return ack;
1317 }
1318
1319 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1320                               struct ieee80211_tx_control *control,
1321                               struct sk_buff *skb)
1322 {
1323         struct mac80211_hwsim_data *data = hw->priv;
1324         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1325         struct ieee80211_hdr *hdr = (void *)skb->data;
1326         struct ieee80211_chanctx_conf *chanctx_conf;
1327         struct ieee80211_channel *channel;
1328         bool ack;
1329         u32 _portid;
1330
1331         if (WARN_ON(skb->len < 10)) {
1332                 /* Should not happen; just a sanity check for addr1 use */
1333                 ieee80211_free_txskb(hw, skb);
1334                 return;
1335         }
1336
1337         if (!data->use_chanctx) {
1338                 channel = data->channel;
1339         } else if (txi->hw_queue == 4) {
1340                 channel = data->tmp_chan;
1341         } else {
1342                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1343                 if (chanctx_conf)
1344                         channel = chanctx_conf->def.chan;
1345                 else
1346                         channel = NULL;
1347         }
1348
1349         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1350                 ieee80211_free_txskb(hw, skb);
1351                 return;
1352         }
1353
1354         if (data->idle && !data->tmp_chan) {
1355                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1356                 ieee80211_free_txskb(hw, skb);
1357                 return;
1358         }
1359
1360         if (txi->control.vif)
1361                 hwsim_check_magic(txi->control.vif);
1362         if (control->sta)
1363                 hwsim_check_sta_magic(control->sta);
1364
1365         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1366                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1367                                        txi->control.rates,
1368                                        ARRAY_SIZE(txi->control.rates));
1369
1370         if (skb->len >= 24 + 8 &&
1371             ieee80211_is_probe_resp(hdr->frame_control)) {
1372                 /* fake header transmission time */
1373                 struct ieee80211_mgmt *mgmt;
1374                 struct ieee80211_rate *txrate;
1375                 u64 ts;
1376
1377                 mgmt = (struct ieee80211_mgmt *)skb->data;
1378                 txrate = ieee80211_get_tx_rate(hw, txi);
1379                 ts = mac80211_hwsim_get_tsf_raw();
1380                 mgmt->u.probe_resp.timestamp =
1381                         cpu_to_le64(ts + data->tsf_offset +
1382                                     24 * 8 * 10 / txrate->bitrate);
1383         }
1384
1385         mac80211_hwsim_monitor_rx(hw, skb, channel);
1386
1387         /* wmediumd mode check */
1388         _portid = ACCESS_ONCE(data->wmediumd);
1389
1390         if (_portid)
1391                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1392
1393         /* NO wmediumd detected, perfect medium simulation */
1394         data->tx_pkts++;
1395         data->tx_bytes += skb->len;
1396         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1397
1398         if (ack && skb->len >= 16)
1399                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1400
1401         ieee80211_tx_info_clear_status(txi);
1402
1403         /* frame was transmitted at most favorable rate at first attempt */
1404         txi->control.rates[0].count = 1;
1405         txi->control.rates[1].idx = -1;
1406
1407         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1408                 txi->flags |= IEEE80211_TX_STAT_ACK;
1409         ieee80211_tx_status_irqsafe(hw, skb);
1410 }
1411
1412
1413 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1414 {
1415         struct mac80211_hwsim_data *data = hw->priv;
1416         wiphy_debug(hw->wiphy, "%s\n", __func__);
1417         data->started = true;
1418         return 0;
1419 }
1420
1421
1422 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1423 {
1424         struct mac80211_hwsim_data *data = hw->priv;
1425         data->started = false;
1426         tasklet_hrtimer_cancel(&data->beacon_timer);
1427         wiphy_debug(hw->wiphy, "%s\n", __func__);
1428 }
1429
1430
1431 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1432                                         struct ieee80211_vif *vif)
1433 {
1434         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1435                     __func__, ieee80211_vif_type_p2p(vif),
1436                     vif->addr);
1437         hwsim_set_magic(vif);
1438
1439         vif->cab_queue = 0;
1440         vif->hw_queue[IEEE80211_AC_VO] = 0;
1441         vif->hw_queue[IEEE80211_AC_VI] = 1;
1442         vif->hw_queue[IEEE80211_AC_BE] = 2;
1443         vif->hw_queue[IEEE80211_AC_BK] = 3;
1444
1445         return 0;
1446 }
1447
1448
1449 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1450                                            struct ieee80211_vif *vif,
1451                                            enum nl80211_iftype newtype,
1452                                            bool newp2p)
1453 {
1454         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1455         wiphy_debug(hw->wiphy,
1456                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1457                     __func__, ieee80211_vif_type_p2p(vif),
1458                     newtype, vif->addr);
1459         hwsim_check_magic(vif);
1460
1461         /*
1462          * interface may change from non-AP to AP in
1463          * which case this needs to be set up again
1464          */
1465         vif->cab_queue = 0;
1466
1467         return 0;
1468 }
1469
1470 static void mac80211_hwsim_remove_interface(
1471         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1472 {
1473         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1474                     __func__, ieee80211_vif_type_p2p(vif),
1475                     vif->addr);
1476         hwsim_check_magic(vif);
1477         hwsim_clear_magic(vif);
1478 }
1479
1480 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1481                                     struct sk_buff *skb,
1482                                     struct ieee80211_channel *chan)
1483 {
1484         struct mac80211_hwsim_data *data = hw->priv;
1485         u32 _pid = ACCESS_ONCE(data->wmediumd);
1486
1487         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1488                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1489                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1490                                        txi->control.rates,
1491                                        ARRAY_SIZE(txi->control.rates));
1492         }
1493
1494         mac80211_hwsim_monitor_rx(hw, skb, chan);
1495
1496         if (_pid)
1497                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1498
1499         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1500         dev_kfree_skb(skb);
1501 }
1502
1503 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1504                                      struct ieee80211_vif *vif)
1505 {
1506         struct mac80211_hwsim_data *data = arg;
1507         struct ieee80211_hw *hw = data->hw;
1508         struct ieee80211_tx_info *info;
1509         struct ieee80211_rate *txrate;
1510         struct ieee80211_mgmt *mgmt;
1511         struct sk_buff *skb;
1512
1513         hwsim_check_magic(vif);
1514
1515         if (vif->type != NL80211_IFTYPE_AP &&
1516             vif->type != NL80211_IFTYPE_MESH_POINT &&
1517             vif->type != NL80211_IFTYPE_ADHOC)
1518                 return;
1519
1520         skb = ieee80211_beacon_get(hw, vif);
1521         if (skb == NULL)
1522                 return;
1523         info = IEEE80211_SKB_CB(skb);
1524         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1525                 ieee80211_get_tx_rates(vif, NULL, skb,
1526                                        info->control.rates,
1527                                        ARRAY_SIZE(info->control.rates));
1528
1529         txrate = ieee80211_get_tx_rate(hw, info);
1530
1531         mgmt = (struct ieee80211_mgmt *) skb->data;
1532         /* fake header transmission time */
1533         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1534         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1535                                                data->tsf_offset +
1536                                                24 * 8 * 10 / txrate->bitrate);
1537
1538         mac80211_hwsim_tx_frame(hw, skb,
1539                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1540
1541         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1542                 ieee80211_csa_finish(vif);
1543 }
1544
1545 static enum hrtimer_restart
1546 mac80211_hwsim_beacon(struct hrtimer *timer)
1547 {
1548         struct mac80211_hwsim_data *data =
1549                 container_of(timer, struct mac80211_hwsim_data,
1550                              beacon_timer.timer);
1551         struct ieee80211_hw *hw = data->hw;
1552         u64 bcn_int = data->beacon_int;
1553         ktime_t next_bcn;
1554
1555         if (!data->started)
1556                 goto out;
1557
1558         ieee80211_iterate_active_interfaces_atomic(
1559                 hw, IEEE80211_IFACE_ITER_NORMAL,
1560                 mac80211_hwsim_beacon_tx, data);
1561
1562         /* beacon at new TBTT + beacon interval */
1563         if (data->bcn_delta) {
1564                 bcn_int -= data->bcn_delta;
1565                 data->bcn_delta = 0;
1566         }
1567
1568         next_bcn = ktime_add(hrtimer_get_expires(timer),
1569                              ns_to_ktime(bcn_int * 1000));
1570         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1571 out:
1572         return HRTIMER_NORESTART;
1573 }
1574
1575 static const char * const hwsim_chanwidths[] = {
1576         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1577         [NL80211_CHAN_WIDTH_20] = "ht20",
1578         [NL80211_CHAN_WIDTH_40] = "ht40",
1579         [NL80211_CHAN_WIDTH_80] = "vht80",
1580         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1581         [NL80211_CHAN_WIDTH_160] = "vht160",
1582 };
1583
1584 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1585 {
1586         struct mac80211_hwsim_data *data = hw->priv;
1587         struct ieee80211_conf *conf = &hw->conf;
1588         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1589                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1590                 [IEEE80211_SMPS_OFF] = "off",
1591                 [IEEE80211_SMPS_STATIC] = "static",
1592                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1593         };
1594         int idx;
1595
1596         if (conf->chandef.chan)
1597                 wiphy_debug(hw->wiphy,
1598                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1599                             __func__,
1600                             conf->chandef.chan->center_freq,
1601                             conf->chandef.center_freq1,
1602                             conf->chandef.center_freq2,
1603                             hwsim_chanwidths[conf->chandef.width],
1604                             !!(conf->flags & IEEE80211_CONF_IDLE),
1605                             !!(conf->flags & IEEE80211_CONF_PS),
1606                             smps_modes[conf->smps_mode]);
1607         else
1608                 wiphy_debug(hw->wiphy,
1609                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1610                             __func__,
1611                             !!(conf->flags & IEEE80211_CONF_IDLE),
1612                             !!(conf->flags & IEEE80211_CONF_PS),
1613                             smps_modes[conf->smps_mode]);
1614
1615         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1616
1617         WARN_ON(conf->chandef.chan && data->use_chanctx);
1618
1619         mutex_lock(&data->mutex);
1620         if (data->scanning && conf->chandef.chan) {
1621                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1622                         if (data->survey_data[idx].channel == data->channel) {
1623                                 data->survey_data[idx].start =
1624                                         data->survey_data[idx].next_start;
1625                                 data->survey_data[idx].end = jiffies;
1626                                 break;
1627                         }
1628                 }
1629
1630                 data->channel = conf->chandef.chan;
1631
1632                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1633                         if (data->survey_data[idx].channel &&
1634                             data->survey_data[idx].channel != data->channel)
1635                                 continue;
1636                         data->survey_data[idx].channel = data->channel;
1637                         data->survey_data[idx].next_start = jiffies;
1638                         break;
1639                 }
1640         } else {
1641                 data->channel = conf->chandef.chan;
1642         }
1643         mutex_unlock(&data->mutex);
1644
1645         if (!data->started || !data->beacon_int)
1646                 tasklet_hrtimer_cancel(&data->beacon_timer);
1647         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1648                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1649                 u32 bcn_int = data->beacon_int;
1650                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1651
1652                 tasklet_hrtimer_start(&data->beacon_timer,
1653                                       ns_to_ktime(until_tbtt * 1000),
1654                                       HRTIMER_MODE_REL);
1655         }
1656
1657         return 0;
1658 }
1659
1660
1661 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1662                                             unsigned int changed_flags,
1663                                             unsigned int *total_flags,u64 multicast)
1664 {
1665         struct mac80211_hwsim_data *data = hw->priv;
1666
1667         wiphy_debug(hw->wiphy, "%s\n", __func__);
1668
1669         data->rx_filter = 0;
1670         if (*total_flags & FIF_ALLMULTI)
1671                 data->rx_filter |= FIF_ALLMULTI;
1672
1673         *total_flags = data->rx_filter;
1674 }
1675
1676 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1677                                        struct ieee80211_vif *vif)
1678 {
1679         unsigned int *count = data;
1680         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1681
1682         if (vp->bcn_en)
1683                 (*count)++;
1684 }
1685
1686 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1687                                             struct ieee80211_vif *vif,
1688                                             struct ieee80211_bss_conf *info,
1689                                             u32 changed)
1690 {
1691         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1692         struct mac80211_hwsim_data *data = hw->priv;
1693
1694         hwsim_check_magic(vif);
1695
1696         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1697                     __func__, changed, vif->addr);
1698
1699         if (changed & BSS_CHANGED_BSSID) {
1700                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1701                             __func__, info->bssid);
1702                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1703         }
1704
1705         if (changed & BSS_CHANGED_ASSOC) {
1706                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1707                             info->assoc, info->aid);
1708                 vp->assoc = info->assoc;
1709                 vp->aid = info->aid;
1710         }
1711
1712         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1713                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1714                             info->enable_beacon, info->beacon_int);
1715                 vp->bcn_en = info->enable_beacon;
1716                 if (data->started &&
1717                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1718                     info->enable_beacon) {
1719                         u64 tsf, until_tbtt;
1720                         u32 bcn_int;
1721                         data->beacon_int = info->beacon_int * 1024;
1722                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1723                         bcn_int = data->beacon_int;
1724                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1725                         tasklet_hrtimer_start(&data->beacon_timer,
1726                                               ns_to_ktime(until_tbtt * 1000),
1727                                               HRTIMER_MODE_REL);
1728                 } else if (!info->enable_beacon) {
1729                         unsigned int count = 0;
1730                         ieee80211_iterate_active_interfaces_atomic(
1731                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1732                                 mac80211_hwsim_bcn_en_iter, &count);
1733                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1734                                     count);
1735                         if (count == 0) {
1736                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1737                                 data->beacon_int = 0;
1738                         }
1739                 }
1740         }
1741
1742         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1743                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1744                             info->use_cts_prot);
1745         }
1746
1747         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1748                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1749                             info->use_short_preamble);
1750         }
1751
1752         if (changed & BSS_CHANGED_ERP_SLOT) {
1753                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1754         }
1755
1756         if (changed & BSS_CHANGED_HT) {
1757                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1758                             info->ht_operation_mode);
1759         }
1760
1761         if (changed & BSS_CHANGED_BASIC_RATES) {
1762                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1763                             (unsigned long long) info->basic_rates);
1764         }
1765
1766         if (changed & BSS_CHANGED_TXPOWER)
1767                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1768 }
1769
1770 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1771                                   struct ieee80211_vif *vif,
1772                                   struct ieee80211_sta *sta)
1773 {
1774         hwsim_check_magic(vif);
1775         hwsim_set_sta_magic(sta);
1776
1777         return 0;
1778 }
1779
1780 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1781                                      struct ieee80211_vif *vif,
1782                                      struct ieee80211_sta *sta)
1783 {
1784         hwsim_check_magic(vif);
1785         hwsim_clear_sta_magic(sta);
1786
1787         return 0;
1788 }
1789
1790 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1791                                       struct ieee80211_vif *vif,
1792                                       enum sta_notify_cmd cmd,
1793                                       struct ieee80211_sta *sta)
1794 {
1795         hwsim_check_magic(vif);
1796
1797         switch (cmd) {
1798         case STA_NOTIFY_SLEEP:
1799         case STA_NOTIFY_AWAKE:
1800                 /* TODO: make good use of these flags */
1801                 break;
1802         default:
1803                 WARN(1, "Invalid sta notify: %d\n", cmd);
1804                 break;
1805         }
1806 }
1807
1808 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1809                                   struct ieee80211_sta *sta,
1810                                   bool set)
1811 {
1812         hwsim_check_sta_magic(sta);
1813         return 0;
1814 }
1815
1816 static int mac80211_hwsim_conf_tx(
1817         struct ieee80211_hw *hw,
1818         struct ieee80211_vif *vif, u16 queue,
1819         const struct ieee80211_tx_queue_params *params)
1820 {
1821         wiphy_debug(hw->wiphy,
1822                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1823                     __func__, queue,
1824                     params->txop, params->cw_min,
1825                     params->cw_max, params->aifs);
1826         return 0;
1827 }
1828
1829 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1830                                      struct survey_info *survey)
1831 {
1832         struct mac80211_hwsim_data *hwsim = hw->priv;
1833
1834         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1835                 return -ENOENT;
1836
1837         mutex_lock(&hwsim->mutex);
1838         survey->channel = hwsim->survey_data[idx].channel;
1839         if (!survey->channel) {
1840                 mutex_unlock(&hwsim->mutex);
1841                 return -ENOENT;
1842         }
1843
1844         /*
1845          * Magically conjured dummy values --- this is only ok for simulated hardware.
1846          *
1847          * A real driver which cannot determine real values noise MUST NOT
1848          * report any, especially not a magically conjured ones :-)
1849          */
1850         survey->filled = SURVEY_INFO_NOISE_DBM |
1851                          SURVEY_INFO_TIME |
1852                          SURVEY_INFO_TIME_BUSY;
1853         survey->noise = -92;
1854         survey->time =
1855                 jiffies_to_msecs(hwsim->survey_data[idx].end -
1856                                  hwsim->survey_data[idx].start);
1857         /* report 12.5% of channel time is used */
1858         survey->time_busy = survey->time/8;
1859         mutex_unlock(&hwsim->mutex);
1860
1861         return 0;
1862 }
1863
1864 #ifdef CONFIG_NL80211_TESTMODE
1865 /*
1866  * This section contains example code for using netlink
1867  * attributes with the testmode command in nl80211.
1868  */
1869
1870 /* These enums need to be kept in sync with userspace */
1871 enum hwsim_testmode_attr {
1872         __HWSIM_TM_ATTR_INVALID = 0,
1873         HWSIM_TM_ATTR_CMD       = 1,
1874         HWSIM_TM_ATTR_PS        = 2,
1875
1876         /* keep last */
1877         __HWSIM_TM_ATTR_AFTER_LAST,
1878         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1879 };
1880
1881 enum hwsim_testmode_cmd {
1882         HWSIM_TM_CMD_SET_PS             = 0,
1883         HWSIM_TM_CMD_GET_PS             = 1,
1884         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1885         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1886 };
1887
1888 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1889         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1890         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1891 };
1892
1893 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1894                                        struct ieee80211_vif *vif,
1895                                        void *data, int len)
1896 {
1897         struct mac80211_hwsim_data *hwsim = hw->priv;
1898         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1899         struct sk_buff *skb;
1900         int err, ps;
1901
1902         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1903                         hwsim_testmode_policy, NULL);
1904         if (err)
1905                 return err;
1906
1907         if (!tb[HWSIM_TM_ATTR_CMD])
1908                 return -EINVAL;
1909
1910         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1911         case HWSIM_TM_CMD_SET_PS:
1912                 if (!tb[HWSIM_TM_ATTR_PS])
1913                         return -EINVAL;
1914                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1915                 return hwsim_fops_ps_write(hwsim, ps);
1916         case HWSIM_TM_CMD_GET_PS:
1917                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1918                                                 nla_total_size(sizeof(u32)));
1919                 if (!skb)
1920                         return -ENOMEM;
1921                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1922                         goto nla_put_failure;
1923                 return cfg80211_testmode_reply(skb);
1924         case HWSIM_TM_CMD_STOP_QUEUES:
1925                 ieee80211_stop_queues(hw);
1926                 return 0;
1927         case HWSIM_TM_CMD_WAKE_QUEUES:
1928                 ieee80211_wake_queues(hw);
1929                 return 0;
1930         default:
1931                 return -EOPNOTSUPP;
1932         }
1933
1934  nla_put_failure:
1935         kfree_skb(skb);
1936         return -ENOBUFS;
1937 }
1938 #endif
1939
1940 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1941                                        struct ieee80211_vif *vif,
1942                                        struct ieee80211_ampdu_params *params)
1943 {
1944         struct ieee80211_sta *sta = params->sta;
1945         enum ieee80211_ampdu_mlme_action action = params->action;
1946         u16 tid = params->tid;
1947
1948         switch (action) {
1949         case IEEE80211_AMPDU_TX_START:
1950                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1951                 break;
1952         case IEEE80211_AMPDU_TX_STOP_CONT:
1953         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1954         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1955                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1956                 break;
1957         case IEEE80211_AMPDU_TX_OPERATIONAL:
1958                 break;
1959         case IEEE80211_AMPDU_RX_START:
1960         case IEEE80211_AMPDU_RX_STOP:
1961                 break;
1962         default:
1963                 return -EOPNOTSUPP;
1964         }
1965
1966         return 0;
1967 }
1968
1969 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1970                                  struct ieee80211_vif *vif,
1971                                  u32 queues, bool drop)
1972 {
1973         /* Not implemented, queues only on kernel side */
1974 }
1975
1976 static void hw_scan_work(struct work_struct *work)
1977 {
1978         struct mac80211_hwsim_data *hwsim =
1979                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1980         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1981         int dwell, i;
1982
1983         mutex_lock(&hwsim->mutex);
1984         if (hwsim->scan_chan_idx >= req->n_channels) {
1985                 struct cfg80211_scan_info info = {
1986                         .aborted = false,
1987                 };
1988
1989                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1990                 ieee80211_scan_completed(hwsim->hw, &info);
1991                 hwsim->hw_scan_request = NULL;
1992                 hwsim->hw_scan_vif = NULL;
1993                 hwsim->tmp_chan = NULL;
1994                 mutex_unlock(&hwsim->mutex);
1995                 return;
1996         }
1997
1998         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1999                     req->channels[hwsim->scan_chan_idx]->center_freq);
2000
2001         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2002         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2003                                       IEEE80211_CHAN_RADAR) ||
2004             !req->n_ssids) {
2005                 dwell = 120;
2006         } else {
2007                 dwell = 30;
2008                 /* send probes */
2009                 for (i = 0; i < req->n_ssids; i++) {
2010                         struct sk_buff *probe;
2011                         struct ieee80211_mgmt *mgmt;
2012
2013                         probe = ieee80211_probereq_get(hwsim->hw,
2014                                                        hwsim->scan_addr,
2015                                                        req->ssids[i].ssid,
2016                                                        req->ssids[i].ssid_len,
2017                                                        req->ie_len);
2018                         if (!probe)
2019                                 continue;
2020
2021                         mgmt = (struct ieee80211_mgmt *) probe->data;
2022                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2023                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2024
2025                         if (req->ie_len)
2026                                 skb_put_data(probe, req->ie, req->ie_len);
2027
2028                         local_bh_disable();
2029                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2030                                                 hwsim->tmp_chan);
2031                         local_bh_enable();
2032                 }
2033         }
2034         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2035                                      msecs_to_jiffies(dwell));
2036         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2037         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2038         hwsim->survey_data[hwsim->scan_chan_idx].end =
2039                 jiffies + msecs_to_jiffies(dwell);
2040         hwsim->scan_chan_idx++;
2041         mutex_unlock(&hwsim->mutex);
2042 }
2043
2044 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2045                                   struct ieee80211_vif *vif,
2046                                   struct ieee80211_scan_request *hw_req)
2047 {
2048         struct mac80211_hwsim_data *hwsim = hw->priv;
2049         struct cfg80211_scan_request *req = &hw_req->req;
2050
2051         mutex_lock(&hwsim->mutex);
2052         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2053                 mutex_unlock(&hwsim->mutex);
2054                 return -EBUSY;
2055         }
2056         hwsim->hw_scan_request = req;
2057         hwsim->hw_scan_vif = vif;
2058         hwsim->scan_chan_idx = 0;
2059         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2060                 get_random_mask_addr(hwsim->scan_addr,
2061                                      hw_req->req.mac_addr,
2062                                      hw_req->req.mac_addr_mask);
2063         else
2064                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2065         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2066         mutex_unlock(&hwsim->mutex);
2067
2068         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2069
2070         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2071
2072         return 0;
2073 }
2074
2075 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2076                                           struct ieee80211_vif *vif)
2077 {
2078         struct mac80211_hwsim_data *hwsim = hw->priv;
2079         struct cfg80211_scan_info info = {
2080                 .aborted = true,
2081         };
2082
2083         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2084
2085         cancel_delayed_work_sync(&hwsim->hw_scan);
2086
2087         mutex_lock(&hwsim->mutex);
2088         ieee80211_scan_completed(hwsim->hw, &info);
2089         hwsim->tmp_chan = NULL;
2090         hwsim->hw_scan_request = NULL;
2091         hwsim->hw_scan_vif = NULL;
2092         mutex_unlock(&hwsim->mutex);
2093 }
2094
2095 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2096                                    struct ieee80211_vif *vif,
2097                                    const u8 *mac_addr)
2098 {
2099         struct mac80211_hwsim_data *hwsim = hw->priv;
2100
2101         mutex_lock(&hwsim->mutex);
2102
2103         if (hwsim->scanning) {
2104                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2105                 goto out;
2106         }
2107
2108         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2109
2110         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2111         hwsim->scanning = true;
2112         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2113
2114 out:
2115         mutex_unlock(&hwsim->mutex);
2116 }
2117
2118 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2119                                             struct ieee80211_vif *vif)
2120 {
2121         struct mac80211_hwsim_data *hwsim = hw->priv;
2122
2123         mutex_lock(&hwsim->mutex);
2124
2125         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2126         hwsim->scanning = false;
2127         eth_zero_addr(hwsim->scan_addr);
2128
2129         mutex_unlock(&hwsim->mutex);
2130 }
2131
2132 static void hw_roc_start(struct work_struct *work)
2133 {
2134         struct mac80211_hwsim_data *hwsim =
2135                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2136
2137         mutex_lock(&hwsim->mutex);
2138
2139         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2140         hwsim->tmp_chan = hwsim->roc_chan;
2141         ieee80211_ready_on_channel(hwsim->hw);
2142
2143         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2144                                      msecs_to_jiffies(hwsim->roc_duration));
2145
2146         mutex_unlock(&hwsim->mutex);
2147 }
2148
2149 static void hw_roc_done(struct work_struct *work)
2150 {
2151         struct mac80211_hwsim_data *hwsim =
2152                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2153
2154         mutex_lock(&hwsim->mutex);
2155         ieee80211_remain_on_channel_expired(hwsim->hw);
2156         hwsim->tmp_chan = NULL;
2157         mutex_unlock(&hwsim->mutex);
2158
2159         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2160 }
2161
2162 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2163                               struct ieee80211_vif *vif,
2164                               struct ieee80211_channel *chan,
2165                               int duration,
2166                               enum ieee80211_roc_type type)
2167 {
2168         struct mac80211_hwsim_data *hwsim = hw->priv;
2169
2170         mutex_lock(&hwsim->mutex);
2171         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2172                 mutex_unlock(&hwsim->mutex);
2173                 return -EBUSY;
2174         }
2175
2176         hwsim->roc_chan = chan;
2177         hwsim->roc_duration = duration;
2178         mutex_unlock(&hwsim->mutex);
2179
2180         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2181                     chan->center_freq, duration);
2182         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2183
2184         return 0;
2185 }
2186
2187 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2188 {
2189         struct mac80211_hwsim_data *hwsim = hw->priv;
2190
2191         cancel_delayed_work_sync(&hwsim->roc_start);
2192         cancel_delayed_work_sync(&hwsim->roc_done);
2193
2194         mutex_lock(&hwsim->mutex);
2195         hwsim->tmp_chan = NULL;
2196         mutex_unlock(&hwsim->mutex);
2197
2198         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2199
2200         return 0;
2201 }
2202
2203 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2204                                       struct ieee80211_chanctx_conf *ctx)
2205 {
2206         hwsim_set_chanctx_magic(ctx);
2207         wiphy_debug(hw->wiphy,
2208                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2209                     ctx->def.chan->center_freq, ctx->def.width,
2210                     ctx->def.center_freq1, ctx->def.center_freq2);
2211         return 0;
2212 }
2213
2214 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2215                                           struct ieee80211_chanctx_conf *ctx)
2216 {
2217         wiphy_debug(hw->wiphy,
2218                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2219                     ctx->def.chan->center_freq, ctx->def.width,
2220                     ctx->def.center_freq1, ctx->def.center_freq2);
2221         hwsim_check_chanctx_magic(ctx);
2222         hwsim_clear_chanctx_magic(ctx);
2223 }
2224
2225 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2226                                           struct ieee80211_chanctx_conf *ctx,
2227                                           u32 changed)
2228 {
2229         hwsim_check_chanctx_magic(ctx);
2230         wiphy_debug(hw->wiphy,
2231                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2232                     ctx->def.chan->center_freq, ctx->def.width,
2233                     ctx->def.center_freq1, ctx->def.center_freq2);
2234 }
2235
2236 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2237                                              struct ieee80211_vif *vif,
2238                                              struct ieee80211_chanctx_conf *ctx)
2239 {
2240         hwsim_check_magic(vif);
2241         hwsim_check_chanctx_magic(ctx);
2242
2243         return 0;
2244 }
2245
2246 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2247                                                 struct ieee80211_vif *vif,
2248                                                 struct ieee80211_chanctx_conf *ctx)
2249 {
2250         hwsim_check_magic(vif);
2251         hwsim_check_chanctx_magic(ctx);
2252 }
2253
2254 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2255         "tx_pkts_nic",
2256         "tx_bytes_nic",
2257         "rx_pkts_nic",
2258         "rx_bytes_nic",
2259         "d_tx_dropped",
2260         "d_tx_failed",
2261         "d_ps_mode",
2262         "d_group",
2263 };
2264
2265 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2266
2267 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2268                                           struct ieee80211_vif *vif,
2269                                           u32 sset, u8 *data)
2270 {
2271         if (sset == ETH_SS_STATS)
2272                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2273                        sizeof(mac80211_hwsim_gstrings_stats));
2274 }
2275
2276 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2277                                             struct ieee80211_vif *vif, int sset)
2278 {
2279         if (sset == ETH_SS_STATS)
2280                 return MAC80211_HWSIM_SSTATS_LEN;
2281         return 0;
2282 }
2283
2284 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2285                                         struct ieee80211_vif *vif,
2286                                         struct ethtool_stats *stats, u64 *data)
2287 {
2288         struct mac80211_hwsim_data *ar = hw->priv;
2289         int i = 0;
2290
2291         data[i++] = ar->tx_pkts;
2292         data[i++] = ar->tx_bytes;
2293         data[i++] = ar->rx_pkts;
2294         data[i++] = ar->rx_bytes;
2295         data[i++] = ar->tx_dropped;
2296         data[i++] = ar->tx_failed;
2297         data[i++] = ar->ps;
2298         data[i++] = ar->group;
2299
2300         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2301 }
2302
2303 #define HWSIM_COMMON_OPS                                        \
2304         .tx = mac80211_hwsim_tx,                                \
2305         .start = mac80211_hwsim_start,                          \
2306         .stop = mac80211_hwsim_stop,                            \
2307         .add_interface = mac80211_hwsim_add_interface,          \
2308         .change_interface = mac80211_hwsim_change_interface,    \
2309         .remove_interface = mac80211_hwsim_remove_interface,    \
2310         .config = mac80211_hwsim_config,                        \
2311         .configure_filter = mac80211_hwsim_configure_filter,    \
2312         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2313         .sta_add = mac80211_hwsim_sta_add,                      \
2314         .sta_remove = mac80211_hwsim_sta_remove,                \
2315         .sta_notify = mac80211_hwsim_sta_notify,                \
2316         .set_tim = mac80211_hwsim_set_tim,                      \
2317         .conf_tx = mac80211_hwsim_conf_tx,                      \
2318         .get_survey = mac80211_hwsim_get_survey,                \
2319         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2320         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2321         .flush = mac80211_hwsim_flush,                          \
2322         .get_tsf = mac80211_hwsim_get_tsf,                      \
2323         .set_tsf = mac80211_hwsim_set_tsf,                      \
2324         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2325         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2326         .get_et_strings = mac80211_hwsim_get_et_strings,
2327
2328 static const struct ieee80211_ops mac80211_hwsim_ops = {
2329         HWSIM_COMMON_OPS
2330         .sw_scan_start = mac80211_hwsim_sw_scan,
2331         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2332 };
2333
2334 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2335         HWSIM_COMMON_OPS
2336         .hw_scan = mac80211_hwsim_hw_scan,
2337         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2338         .sw_scan_start = NULL,
2339         .sw_scan_complete = NULL,
2340         .remain_on_channel = mac80211_hwsim_roc,
2341         .cancel_remain_on_channel = mac80211_hwsim_croc,
2342         .add_chanctx = mac80211_hwsim_add_chanctx,
2343         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2344         .change_chanctx = mac80211_hwsim_change_chanctx,
2345         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2346         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2347 };
2348
2349 struct hwsim_new_radio_params {
2350         unsigned int channels;
2351         const char *reg_alpha2;
2352         const struct ieee80211_regdomain *regd;
2353         bool reg_strict;
2354         bool p2p_device;
2355         bool use_chanctx;
2356         bool destroy_on_close;
2357         const char *hwname;
2358         bool no_vif;
2359 };
2360
2361 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2362                                    struct genl_info *info)
2363 {
2364         if (info)
2365                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2366                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2367         else
2368                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2369                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2370 }
2371
2372 static int append_radio_msg(struct sk_buff *skb, int id,
2373                             struct hwsim_new_radio_params *param)
2374 {
2375         int ret;
2376
2377         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2378         if (ret < 0)
2379                 return ret;
2380
2381         if (param->channels) {
2382                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2383                 if (ret < 0)
2384                         return ret;
2385         }
2386
2387         if (param->reg_alpha2) {
2388                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2389                               param->reg_alpha2);
2390                 if (ret < 0)
2391                         return ret;
2392         }
2393
2394         if (param->regd) {
2395                 int i;
2396
2397                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2398                         if (hwsim_world_regdom_custom[i] != param->regd)
2399                                 continue;
2400
2401                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2402                         if (ret < 0)
2403                                 return ret;
2404                         break;
2405                 }
2406         }
2407
2408         if (param->reg_strict) {
2409                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2410                 if (ret < 0)
2411                         return ret;
2412         }
2413
2414         if (param->p2p_device) {
2415                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2416                 if (ret < 0)
2417                         return ret;
2418         }
2419
2420         if (param->use_chanctx) {
2421                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2422                 if (ret < 0)
2423                         return ret;
2424         }
2425
2426         if (param->hwname) {
2427                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2428                               strlen(param->hwname), param->hwname);
2429                 if (ret < 0)
2430                         return ret;
2431         }
2432
2433         return 0;
2434 }
2435
2436 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2437                                   struct hwsim_new_radio_params *param)
2438 {
2439         struct sk_buff *mcast_skb;
2440         void *data;
2441
2442         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2443         if (!mcast_skb)
2444                 return;
2445
2446         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2447                            HWSIM_CMD_NEW_RADIO);
2448         if (!data)
2449                 goto out_err;
2450
2451         if (append_radio_msg(mcast_skb, id, param) < 0)
2452                 goto out_err;
2453
2454         genlmsg_end(mcast_skb, data);
2455
2456         hwsim_mcast_config_msg(mcast_skb, info);
2457         return;
2458
2459 out_err:
2460         genlmsg_cancel(mcast_skb, data);
2461         nlmsg_free(mcast_skb);
2462 }
2463
2464 static int mac80211_hwsim_new_radio(struct genl_info *info,
2465                                     struct hwsim_new_radio_params *param)
2466 {
2467         int err;
2468         u8 addr[ETH_ALEN];
2469         struct mac80211_hwsim_data *data;
2470         struct ieee80211_hw *hw;
2471         enum nl80211_band band;
2472         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2473         struct net *net;
2474         int idx;
2475
2476         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2477                 return -EINVAL;
2478
2479         spin_lock_bh(&hwsim_radio_lock);
2480         idx = hwsim_radio_idx++;
2481         spin_unlock_bh(&hwsim_radio_lock);
2482
2483         if (param->use_chanctx)
2484                 ops = &mac80211_hwsim_mchan_ops;
2485         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2486         if (!hw) {
2487                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2488                 err = -ENOMEM;
2489                 goto failed;
2490         }
2491
2492         /* ieee80211_alloc_hw_nm may have used a default name */
2493         param->hwname = wiphy_name(hw->wiphy);
2494
2495         if (info)
2496                 net = genl_info_net(info);
2497         else
2498                 net = &init_net;
2499         wiphy_net_set(hw->wiphy, net);
2500
2501         data = hw->priv;
2502         data->hw = hw;
2503
2504         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2505         if (IS_ERR(data->dev)) {
2506                 printk(KERN_DEBUG
2507                        "mac80211_hwsim: device_create failed (%ld)\n",
2508                        PTR_ERR(data->dev));
2509                 err = -ENOMEM;
2510                 goto failed_drvdata;
2511         }
2512         data->dev->driver = &mac80211_hwsim_driver.driver;
2513         err = device_bind_driver(data->dev);
2514         if (err != 0) {
2515                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2516                        err);
2517                 goto failed_bind;
2518         }
2519
2520         skb_queue_head_init(&data->pending);
2521
2522         SET_IEEE80211_DEV(hw, data->dev);
2523         eth_zero_addr(addr);
2524         addr[0] = 0x02;
2525         addr[3] = idx >> 8;
2526         addr[4] = idx;
2527         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2528         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2529         data->addresses[1].addr[0] |= 0x40;
2530         hw->wiphy->n_addresses = 2;
2531         hw->wiphy->addresses = data->addresses;
2532
2533         data->channels = param->channels;
2534         data->use_chanctx = param->use_chanctx;
2535         data->idx = idx;
2536         data->destroy_on_close = param->destroy_on_close;
2537         if (info)
2538                 data->portid = info->snd_portid;
2539
2540         if (data->use_chanctx) {
2541                 hw->wiphy->max_scan_ssids = 255;
2542                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2543                 hw->wiphy->max_remain_on_channel_duration = 1000;
2544                 hw->wiphy->iface_combinations = &data->if_combination;
2545                 if (param->p2p_device)
2546                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2547                 else
2548                         data->if_combination = hwsim_if_comb[0];
2549                 hw->wiphy->n_iface_combinations = 1;
2550                 /* For channels > 1 DFS is not allowed */
2551                 data->if_combination.radar_detect_widths = 0;
2552                 data->if_combination.num_different_channels = data->channels;
2553         } else if (param->p2p_device) {
2554                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2555                 hw->wiphy->n_iface_combinations =
2556                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2557         } else {
2558                 hw->wiphy->iface_combinations = hwsim_if_comb;
2559                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2560         }
2561
2562         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2563         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2564         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2565
2566         hw->queues = 5;
2567         hw->offchannel_tx_hw_queue = 4;
2568         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2569                                      BIT(NL80211_IFTYPE_AP) |
2570                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2571                                      BIT(NL80211_IFTYPE_P2P_GO) |
2572                                      BIT(NL80211_IFTYPE_ADHOC) |
2573                                      BIT(NL80211_IFTYPE_MESH_POINT);
2574
2575         if (param->p2p_device)
2576                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2577
2578         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2579         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2580         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2581         ieee80211_hw_set(hw, QUEUE_CONTROL);
2582         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2583         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2584         ieee80211_hw_set(hw, MFP_CAPABLE);
2585         ieee80211_hw_set(hw, SIGNAL_DBM);
2586         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2587         if (rctbl)
2588                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2589
2590         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2591                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2592                             WIPHY_FLAG_AP_UAPSD |
2593                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2594         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2595                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2596                                NL80211_FEATURE_STATIC_SMPS |
2597                                NL80211_FEATURE_DYNAMIC_SMPS |
2598                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2599         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2600
2601         /* ask mac80211 to reserve space for magic */
2602         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2603         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2604         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2605
2606         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2607                 sizeof(hwsim_channels_2ghz));
2608         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2609                 sizeof(hwsim_channels_5ghz));
2610         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2611
2612         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2613                 struct ieee80211_supported_band *sband = &data->bands[band];
2614                 switch (band) {
2615                 case NL80211_BAND_2GHZ:
2616                         sband->channels = data->channels_2ghz;
2617                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2618                         sband->bitrates = data->rates;
2619                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2620                         break;
2621                 case NL80211_BAND_5GHZ:
2622                         sband->channels = data->channels_5ghz;
2623                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2624                         sband->bitrates = data->rates + 4;
2625                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2626
2627                         sband->vht_cap.vht_supported = true;
2628                         sband->vht_cap.cap =
2629                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2630                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2631                                 IEEE80211_VHT_CAP_RXLDPC |
2632                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2633                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2634                                 IEEE80211_VHT_CAP_TXSTBC |
2635                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2636                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2637                         sband->vht_cap.vht_mcs.rx_mcs_map =
2638                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2639                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2640                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2641                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2642                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2643                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2644                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2645                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2646                         sband->vht_cap.vht_mcs.tx_mcs_map =
2647                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2648                         break;
2649                 default:
2650                         continue;
2651                 }
2652
2653                 sband->ht_cap.ht_supported = true;
2654                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2655                                     IEEE80211_HT_CAP_GRN_FLD |
2656                                     IEEE80211_HT_CAP_SGI_20 |
2657                                     IEEE80211_HT_CAP_SGI_40 |
2658                                     IEEE80211_HT_CAP_DSSSCCK40;
2659                 sband->ht_cap.ampdu_factor = 0x3;
2660                 sband->ht_cap.ampdu_density = 0x6;
2661                 memset(&sband->ht_cap.mcs, 0,
2662                        sizeof(sband->ht_cap.mcs));
2663                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2664                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2665                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2666
2667                 hw->wiphy->bands[band] = sband;
2668         }
2669
2670         /* By default all radios belong to the first group */
2671         data->group = 1;
2672         mutex_init(&data->mutex);
2673
2674         data->netgroup = hwsim_net_get_netgroup(net);
2675
2676         /* Enable frame retransmissions for lossy channels */
2677         hw->max_rates = 4;
2678         hw->max_rate_tries = 11;
2679
2680         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2681         hw->wiphy->n_vendor_commands =
2682                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2683         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2684         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2685
2686         if (param->reg_strict)
2687                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2688         if (param->regd) {
2689                 data->regd = param->regd;
2690                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2691                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2692                 /* give the regulatory workqueue a chance to run */
2693                 schedule_timeout_interruptible(1);
2694         }
2695
2696         if (param->no_vif)
2697                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2698
2699         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2700
2701         tasklet_hrtimer_init(&data->beacon_timer,
2702                              mac80211_hwsim_beacon,
2703                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2704
2705         err = ieee80211_register_hw(hw);
2706         if (err < 0) {
2707                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2708                        err);
2709                 goto failed_hw;
2710         }
2711
2712         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2713
2714         if (param->reg_alpha2) {
2715                 data->alpha2[0] = param->reg_alpha2[0];
2716                 data->alpha2[1] = param->reg_alpha2[1];
2717                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2718         }
2719
2720         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2721         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2722         debugfs_create_file("group", 0666, data->debugfs, data,
2723                             &hwsim_fops_group);
2724         if (!data->use_chanctx)
2725                 debugfs_create_file("dfs_simulate_radar", 0222,
2726                                     data->debugfs,
2727                                     data, &hwsim_simulate_radar);
2728
2729         spin_lock_bh(&hwsim_radio_lock);
2730         list_add_tail(&data->list, &hwsim_radios);
2731         spin_unlock_bh(&hwsim_radio_lock);
2732
2733         hwsim_mcast_new_radio(idx, info, param);
2734
2735         return idx;
2736
2737 failed_hw:
2738         device_release_driver(data->dev);
2739 failed_bind:
2740         device_unregister(data->dev);
2741 failed_drvdata:
2742         ieee80211_free_hw(hw);
2743 failed:
2744         return err;
2745 }
2746
2747 static void hwsim_mcast_del_radio(int id, const char *hwname,
2748                                   struct genl_info *info)
2749 {
2750         struct sk_buff *skb;
2751         void *data;
2752         int ret;
2753
2754         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2755         if (!skb)
2756                 return;
2757
2758         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2759                            HWSIM_CMD_DEL_RADIO);
2760         if (!data)
2761                 goto error;
2762
2763         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2764         if (ret < 0)
2765                 goto error;
2766
2767         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2768                       hwname);
2769         if (ret < 0)
2770                 goto error;
2771
2772         genlmsg_end(skb, data);
2773
2774         hwsim_mcast_config_msg(skb, info);
2775
2776         return;
2777
2778 error:
2779         nlmsg_free(skb);
2780 }
2781
2782 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2783                                      const char *hwname,
2784                                      struct genl_info *info)
2785 {
2786         hwsim_mcast_del_radio(data->idx, hwname, info);
2787         debugfs_remove_recursive(data->debugfs);
2788         ieee80211_unregister_hw(data->hw);
2789         device_release_driver(data->dev);
2790         device_unregister(data->dev);
2791         ieee80211_free_hw(data->hw);
2792 }
2793
2794 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2795                                     struct mac80211_hwsim_data *data,
2796                                     u32 portid, u32 seq,
2797                                     struct netlink_callback *cb, int flags)
2798 {
2799         void *hdr;
2800         struct hwsim_new_radio_params param = { };
2801         int res = -EMSGSIZE;
2802
2803         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2804                           HWSIM_CMD_GET_RADIO);
2805         if (!hdr)
2806                 return -EMSGSIZE;
2807
2808         if (cb)
2809                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2810
2811         if (data->alpha2[0] && data->alpha2[1])
2812                 param.reg_alpha2 = data->alpha2;
2813
2814         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2815                                         REGULATORY_STRICT_REG);
2816         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2817                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2818         param.use_chanctx = data->use_chanctx;
2819         param.regd = data->regd;
2820         param.channels = data->channels;
2821         param.hwname = wiphy_name(data->hw->wiphy);
2822
2823         res = append_radio_msg(skb, data->idx, &param);
2824         if (res < 0)
2825                 goto out_err;
2826
2827         genlmsg_end(skb, hdr);
2828         return 0;
2829
2830 out_err:
2831         genlmsg_cancel(skb, hdr);
2832         return res;
2833 }
2834
2835 static void mac80211_hwsim_free(void)
2836 {
2837         struct mac80211_hwsim_data *data;
2838
2839         spin_lock_bh(&hwsim_radio_lock);
2840         while ((data = list_first_entry_or_null(&hwsim_radios,
2841                                                 struct mac80211_hwsim_data,
2842                                                 list))) {
2843                 list_del(&data->list);
2844                 spin_unlock_bh(&hwsim_radio_lock);
2845                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2846                                          NULL);
2847                 spin_lock_bh(&hwsim_radio_lock);
2848         }
2849         spin_unlock_bh(&hwsim_radio_lock);
2850         class_destroy(hwsim_class);
2851 }
2852
2853 static const struct net_device_ops hwsim_netdev_ops = {
2854         .ndo_start_xmit         = hwsim_mon_xmit,
2855         .ndo_set_mac_address    = eth_mac_addr,
2856         .ndo_validate_addr      = eth_validate_addr,
2857 };
2858
2859 static void hwsim_mon_setup(struct net_device *dev)
2860 {
2861         dev->netdev_ops = &hwsim_netdev_ops;
2862         dev->needs_free_netdev = true;
2863         ether_setup(dev);
2864         dev->priv_flags |= IFF_NO_QUEUE;
2865         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2866         eth_zero_addr(dev->dev_addr);
2867         dev->dev_addr[0] = 0x12;
2868 }
2869
2870 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2871 {
2872         struct mac80211_hwsim_data *data;
2873         bool _found = false;
2874
2875         spin_lock_bh(&hwsim_radio_lock);
2876         list_for_each_entry(data, &hwsim_radios, list) {
2877                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2878                         _found = true;
2879                         break;
2880                 }
2881         }
2882         spin_unlock_bh(&hwsim_radio_lock);
2883
2884         if (!_found)
2885                 return NULL;
2886
2887         return data;
2888 }
2889
2890 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2891 {
2892         struct mac80211_hwsim_data *data;
2893
2894         hwsim_net_set_wmediumd(net, portid);
2895
2896         spin_lock_bh(&hwsim_radio_lock);
2897         list_for_each_entry(data, &hwsim_radios, list) {
2898                 if (data->netgroup == hwsim_net_get_netgroup(net))
2899                         data->wmediumd = portid;
2900         }
2901         spin_unlock_bh(&hwsim_radio_lock);
2902 }
2903
2904 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2905                                            struct genl_info *info)
2906 {
2907
2908         struct ieee80211_hdr *hdr;
2909         struct mac80211_hwsim_data *data2;
2910         struct ieee80211_tx_info *txi;
2911         struct hwsim_tx_rate *tx_attempts;
2912         u64 ret_skb_cookie;
2913         struct sk_buff *skb, *tmp;
2914         const u8 *src;
2915         unsigned int hwsim_flags;
2916         int i;
2917         bool found = false;
2918
2919         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2920             !info->attrs[HWSIM_ATTR_FLAGS] ||
2921             !info->attrs[HWSIM_ATTR_COOKIE] ||
2922             !info->attrs[HWSIM_ATTR_SIGNAL] ||
2923             !info->attrs[HWSIM_ATTR_TX_INFO])
2924                 goto out;
2925
2926         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2927         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2928         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2929
2930         data2 = get_hwsim_data_ref_from_addr(src);
2931         if (!data2)
2932                 goto out;
2933
2934         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2935                 goto out;
2936
2937         if (info->snd_portid != data2->wmediumd)
2938                 goto out;
2939
2940         /* look for the skb matching the cookie passed back from user */
2941         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2942                 u64 skb_cookie;
2943
2944                 txi = IEEE80211_SKB_CB(skb);
2945                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2946
2947                 if (skb_cookie == ret_skb_cookie) {
2948                         skb_unlink(skb, &data2->pending);
2949                         found = true;
2950                         break;
2951                 }
2952         }
2953
2954         /* not found */
2955         if (!found)
2956                 goto out;
2957
2958         /* Tx info received because the frame was broadcasted on user space,
2959          so we get all the necessary info: tx attempts and skb control buff */
2960
2961         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2962                        info->attrs[HWSIM_ATTR_TX_INFO]);
2963
2964         /* now send back TX status */
2965         txi = IEEE80211_SKB_CB(skb);
2966
2967         ieee80211_tx_info_clear_status(txi);
2968
2969         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2970                 txi->status.rates[i].idx = tx_attempts[i].idx;
2971                 txi->status.rates[i].count = tx_attempts[i].count;
2972                 /*txi->status.rates[i].flags = 0;*/
2973         }
2974
2975         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2976
2977         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2978            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2979                 if (skb->len >= 16) {
2980                         hdr = (struct ieee80211_hdr *) skb->data;
2981                         mac80211_hwsim_monitor_ack(data2->channel,
2982                                                    hdr->addr2);
2983                 }
2984                 txi->flags |= IEEE80211_TX_STAT_ACK;
2985         }
2986         ieee80211_tx_status_irqsafe(data2->hw, skb);
2987         return 0;
2988 out:
2989         return -EINVAL;
2990
2991 }
2992
2993 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2994                                           struct genl_info *info)
2995 {
2996         struct mac80211_hwsim_data *data2;
2997         struct ieee80211_rx_status rx_status;
2998         const u8 *dst;
2999         int frame_data_len;
3000         void *frame_data;
3001         struct sk_buff *skb = NULL;
3002
3003         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3004             !info->attrs[HWSIM_ATTR_FRAME] ||
3005             !info->attrs[HWSIM_ATTR_RX_RATE] ||
3006             !info->attrs[HWSIM_ATTR_SIGNAL])
3007                 goto out;
3008
3009         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3010         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3011         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3012
3013         /* Allocate new skb here */
3014         skb = alloc_skb(frame_data_len, GFP_KERNEL);
3015         if (skb == NULL)
3016                 goto err;
3017
3018         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3019                 goto err;
3020
3021         /* Copy the data */
3022         skb_put_data(skb, frame_data, frame_data_len);
3023
3024         data2 = get_hwsim_data_ref_from_addr(dst);
3025         if (!data2)
3026                 goto out;
3027
3028         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3029                 goto out;
3030
3031         if (info->snd_portid != data2->wmediumd)
3032                 goto out;
3033
3034         /* check if radio is configured properly */
3035
3036         if (data2->idle || !data2->started)
3037                 goto out;
3038
3039         /* A frame is received from user space */
3040         memset(&rx_status, 0, sizeof(rx_status));
3041         if (info->attrs[HWSIM_ATTR_FREQ]) {
3042                 /* throw away off-channel packets, but allow both the temporary
3043                  * ("hw" scan/remain-on-channel) and regular channel, since the
3044                  * internal datapath also allows this
3045                  */
3046                 mutex_lock(&data2->mutex);
3047                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3048
3049                 if (rx_status.freq != data2->channel->center_freq &&
3050                     (!data2->tmp_chan ||
3051                      rx_status.freq != data2->tmp_chan->center_freq)) {
3052                         mutex_unlock(&data2->mutex);
3053                         goto out;
3054                 }
3055                 mutex_unlock(&data2->mutex);
3056         } else {
3057                 rx_status.freq = data2->channel->center_freq;
3058         }
3059
3060         rx_status.band = data2->channel->band;
3061         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3062         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3063
3064         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3065         data2->rx_pkts++;
3066         data2->rx_bytes += skb->len;
3067         ieee80211_rx_irqsafe(data2->hw, skb);
3068
3069         return 0;
3070 err:
3071         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3072 out:
3073         dev_kfree_skb(skb);
3074         return -EINVAL;
3075 }
3076
3077 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3078                                       struct genl_info *info)
3079 {
3080         struct net *net = genl_info_net(info);
3081         struct mac80211_hwsim_data *data;
3082         int chans = 1;
3083
3084         spin_lock_bh(&hwsim_radio_lock);
3085         list_for_each_entry(data, &hwsim_radios, list)
3086                 chans = max(chans, data->channels);
3087         spin_unlock_bh(&hwsim_radio_lock);
3088
3089         /* In the future we should revise the userspace API and allow it
3090          * to set a flag that it does support multi-channel, then we can
3091          * let this pass conditionally on the flag.
3092          * For current userspace, prohibit it since it won't work right.
3093          */
3094         if (chans > 1)
3095                 return -EOPNOTSUPP;
3096
3097         if (hwsim_net_get_wmediumd(net))
3098                 return -EBUSY;
3099
3100         hwsim_register_wmediumd(net, info->snd_portid);
3101
3102         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3103                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3104
3105         return 0;
3106 }
3107
3108 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3109 {
3110         struct hwsim_new_radio_params param = { 0 };
3111         const char *hwname = NULL;
3112         int ret;
3113
3114         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3115         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3116         param.channels = channels;
3117         param.destroy_on_close =
3118                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3119
3120         if (info->attrs[HWSIM_ATTR_CHANNELS])
3121                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3122
3123         if (param.channels < 1) {
3124                 GENL_SET_ERR_MSG(info, "must have at least one channel");
3125                 return -EINVAL;
3126         }
3127
3128         if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3129                 GENL_SET_ERR_MSG(info, "too many channels specified");
3130                 return -EINVAL;
3131         }
3132
3133         if (info->attrs[HWSIM_ATTR_NO_VIF])
3134                 param.no_vif = true;
3135
3136         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3137                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3138                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3139                                   GFP_KERNEL);
3140                 if (!hwname)
3141                         return -ENOMEM;
3142                 param.hwname = hwname;
3143         }
3144
3145         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3146                 param.use_chanctx = true;
3147         else
3148                 param.use_chanctx = (param.channels > 1);
3149
3150         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3151                 param.reg_alpha2 =
3152                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3153
3154         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3155                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3156
3157                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom)) {
3158                         kfree(hwname);
3159                         return -EINVAL;
3160                 }
3161                 param.regd = hwsim_world_regdom_custom[idx];
3162         }
3163
3164         ret = mac80211_hwsim_new_radio(info, &param);
3165         kfree(hwname);
3166         return ret;
3167 }
3168
3169 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3170 {
3171         struct mac80211_hwsim_data *data;
3172         s64 idx = -1;
3173         const char *hwname = NULL;
3174
3175         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3176                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3177         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3178                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3179                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3180                                   GFP_KERNEL);
3181                 if (!hwname)
3182                         return -ENOMEM;
3183         } else
3184                 return -EINVAL;
3185
3186         spin_lock_bh(&hwsim_radio_lock);
3187         list_for_each_entry(data, &hwsim_radios, list) {
3188                 if (idx >= 0) {
3189                         if (data->idx != idx)
3190                                 continue;
3191                 } else {
3192                         if (!hwname ||
3193                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3194                                 continue;
3195                 }
3196
3197                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3198                         continue;
3199
3200                 list_del(&data->list);
3201                 spin_unlock_bh(&hwsim_radio_lock);
3202                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3203                                          info);
3204                 kfree(hwname);
3205                 return 0;
3206         }
3207         spin_unlock_bh(&hwsim_radio_lock);
3208
3209         kfree(hwname);
3210         return -ENODEV;
3211 }
3212
3213 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3214 {
3215         struct mac80211_hwsim_data *data;
3216         struct sk_buff *skb;
3217         int idx, res = -ENODEV;
3218
3219         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3220                 return -EINVAL;
3221         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3222
3223         spin_lock_bh(&hwsim_radio_lock);
3224         list_for_each_entry(data, &hwsim_radios, list) {
3225                 if (data->idx != idx)
3226                         continue;
3227
3228                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3229                         continue;
3230
3231                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3232                 if (!skb) {
3233                         res = -ENOMEM;
3234                         goto out_err;
3235                 }
3236
3237                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3238                                                info->snd_seq, NULL, 0);
3239                 if (res < 0) {
3240                         nlmsg_free(skb);
3241                         goto out_err;
3242                 }
3243
3244                 res = genlmsg_reply(skb, info);
3245                 break;
3246         }
3247
3248 out_err:
3249         spin_unlock_bh(&hwsim_radio_lock);
3250
3251         return res;
3252 }
3253
3254 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3255                                struct netlink_callback *cb)
3256 {
3257         int idx = cb->args[0];
3258         struct mac80211_hwsim_data *data = NULL;
3259         int res;
3260
3261         spin_lock_bh(&hwsim_radio_lock);
3262
3263         if (idx == hwsim_radio_idx)
3264                 goto done;
3265
3266         list_for_each_entry(data, &hwsim_radios, list) {
3267                 if (data->idx < idx)
3268                         continue;
3269
3270                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3271                         continue;
3272
3273                 res = mac80211_hwsim_get_radio(skb, data,
3274                                                NETLINK_CB(cb->skb).portid,
3275                                                cb->nlh->nlmsg_seq, cb,
3276                                                NLM_F_MULTI);
3277                 if (res < 0)
3278                         break;
3279
3280                 idx = data->idx + 1;
3281         }
3282
3283         cb->args[0] = idx;
3284
3285 done:
3286         spin_unlock_bh(&hwsim_radio_lock);
3287         return skb->len;
3288 }
3289
3290 /* Generic Netlink operations array */
3291 static const struct genl_ops hwsim_ops[] = {
3292         {
3293                 .cmd = HWSIM_CMD_REGISTER,
3294                 .policy = hwsim_genl_policy,
3295                 .doit = hwsim_register_received_nl,
3296                 .flags = GENL_UNS_ADMIN_PERM,
3297         },
3298         {
3299                 .cmd = HWSIM_CMD_FRAME,
3300                 .policy = hwsim_genl_policy,
3301                 .doit = hwsim_cloned_frame_received_nl,
3302         },
3303         {
3304                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3305                 .policy = hwsim_genl_policy,
3306                 .doit = hwsim_tx_info_frame_received_nl,
3307         },
3308         {
3309                 .cmd = HWSIM_CMD_NEW_RADIO,
3310                 .policy = hwsim_genl_policy,
3311                 .doit = hwsim_new_radio_nl,
3312                 .flags = GENL_UNS_ADMIN_PERM,
3313         },
3314         {
3315                 .cmd = HWSIM_CMD_DEL_RADIO,
3316                 .policy = hwsim_genl_policy,
3317                 .doit = hwsim_del_radio_nl,
3318                 .flags = GENL_UNS_ADMIN_PERM,
3319         },
3320         {
3321                 .cmd = HWSIM_CMD_GET_RADIO,
3322                 .policy = hwsim_genl_policy,
3323                 .doit = hwsim_get_radio_nl,
3324                 .dumpit = hwsim_dump_radio_nl,
3325         },
3326 };
3327
3328 static struct genl_family hwsim_genl_family __ro_after_init = {
3329         .name = "MAC80211_HWSIM",
3330         .version = 1,
3331         .maxattr = HWSIM_ATTR_MAX,
3332         .netnsok = true,
3333         .module = THIS_MODULE,
3334         .ops = hwsim_ops,
3335         .n_ops = ARRAY_SIZE(hwsim_ops),
3336         .mcgrps = hwsim_mcgrps,
3337         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3338 };
3339
3340 static void destroy_radio(struct work_struct *work)
3341 {
3342         struct mac80211_hwsim_data *data =
3343                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3344
3345         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3346 }
3347
3348 static void remove_user_radios(u32 portid)
3349 {
3350         struct mac80211_hwsim_data *entry, *tmp;
3351
3352         spin_lock_bh(&hwsim_radio_lock);
3353         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3354                 if (entry->destroy_on_close && entry->portid == portid) {
3355                         list_del(&entry->list);
3356                         INIT_WORK(&entry->destroy_work, destroy_radio);
3357                         schedule_work(&entry->destroy_work);
3358                 }
3359         }
3360         spin_unlock_bh(&hwsim_radio_lock);
3361 }
3362
3363 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3364                                          unsigned long state,
3365                                          void *_notify)
3366 {
3367         struct netlink_notify *notify = _notify;
3368
3369         if (state != NETLINK_URELEASE)
3370                 return NOTIFY_DONE;
3371
3372         remove_user_radios(notify->portid);
3373
3374         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3375                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3376                        " socket, switching to perfect channel medium\n");
3377                 hwsim_register_wmediumd(notify->net, 0);
3378         }
3379         return NOTIFY_DONE;
3380
3381 }
3382
3383 static struct notifier_block hwsim_netlink_notifier = {
3384         .notifier_call = mac80211_hwsim_netlink_notify,
3385 };
3386
3387 static int __init hwsim_init_netlink(void)
3388 {
3389         int rc;
3390
3391         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3392
3393         rc = genl_register_family(&hwsim_genl_family);
3394         if (rc)
3395                 goto failure;
3396
3397         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3398         if (rc) {
3399                 genl_unregister_family(&hwsim_genl_family);
3400                 goto failure;
3401         }
3402
3403         return 0;
3404
3405 failure:
3406         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3407         return -EINVAL;
3408 }
3409
3410 static __net_init int hwsim_init_net(struct net *net)
3411 {
3412         hwsim_net_set_netgroup(net);
3413
3414         return 0;
3415 }
3416
3417 static void __net_exit hwsim_exit_net(struct net *net)
3418 {
3419         struct mac80211_hwsim_data *data, *tmp;
3420
3421         spin_lock_bh(&hwsim_radio_lock);
3422         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3423                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3424                         continue;
3425
3426                 /* Radios created in init_net are returned to init_net. */
3427                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3428                         continue;
3429
3430                 list_del(&data->list);
3431                 spin_unlock_bh(&hwsim_radio_lock);
3432                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3433                                          NULL);
3434                 spin_lock_bh(&hwsim_radio_lock);
3435
3436         }
3437         spin_unlock_bh(&hwsim_radio_lock);
3438 }
3439
3440 static struct pernet_operations hwsim_net_ops = {
3441         .init = hwsim_init_net,
3442         .exit = hwsim_exit_net,
3443         .id   = &hwsim_net_id,
3444         .size = sizeof(struct hwsim_net),
3445 };
3446
3447 static void hwsim_exit_netlink(void)
3448 {
3449         /* unregister the notifier */
3450         netlink_unregister_notifier(&hwsim_netlink_notifier);
3451         /* unregister the family */
3452         genl_unregister_family(&hwsim_genl_family);
3453 }
3454
3455 static int __init init_mac80211_hwsim(void)
3456 {
3457         int i, err;
3458
3459         if (radios < 0 || radios > 100)
3460                 return -EINVAL;
3461
3462         if (channels < 1)
3463                 return -EINVAL;
3464
3465         spin_lock_init(&hwsim_radio_lock);
3466
3467         err = register_pernet_device(&hwsim_net_ops);
3468         if (err)
3469                 return err;
3470
3471         err = platform_driver_register(&mac80211_hwsim_driver);
3472         if (err)
3473                 goto out_unregister_pernet;
3474
3475         err = hwsim_init_netlink();
3476         if (err)
3477                 goto out_unregister_driver;
3478
3479         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3480         if (IS_ERR(hwsim_class)) {
3481                 err = PTR_ERR(hwsim_class);
3482                 goto out_exit_netlink;
3483         }
3484
3485         for (i = 0; i < radios; i++) {
3486                 struct hwsim_new_radio_params param = { 0 };
3487
3488                 param.channels = channels;
3489
3490                 switch (regtest) {
3491                 case HWSIM_REGTEST_DIFF_COUNTRY:
3492                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3493                                 param.reg_alpha2 = hwsim_alpha2s[i];
3494                         break;
3495                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3496                         if (!i)
3497                                 param.reg_alpha2 = hwsim_alpha2s[0];
3498                         break;
3499                 case HWSIM_REGTEST_STRICT_ALL:
3500                         param.reg_strict = true;
3501                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3502                         param.reg_alpha2 = hwsim_alpha2s[0];
3503                         break;
3504                 case HWSIM_REGTEST_WORLD_ROAM:
3505                         if (i == 0)
3506                                 param.regd = &hwsim_world_regdom_custom_01;
3507                         break;
3508                 case HWSIM_REGTEST_CUSTOM_WORLD:
3509                         param.regd = &hwsim_world_regdom_custom_01;
3510                         break;
3511                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3512                         if (i == 0)
3513                                 param.regd = &hwsim_world_regdom_custom_01;
3514                         else if (i == 1)
3515                                 param.regd = &hwsim_world_regdom_custom_02;
3516                         break;
3517                 case HWSIM_REGTEST_STRICT_FOLLOW:
3518                         if (i == 0) {
3519                                 param.reg_strict = true;
3520                                 param.reg_alpha2 = hwsim_alpha2s[0];
3521                         }
3522                         break;
3523                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3524                         if (i == 0) {
3525                                 param.reg_strict = true;
3526                                 param.reg_alpha2 = hwsim_alpha2s[0];
3527                         } else if (i == 1) {
3528                                 param.reg_alpha2 = hwsim_alpha2s[1];
3529                         }
3530                         break;
3531                 case HWSIM_REGTEST_ALL:
3532                         switch (i) {
3533                         case 0:
3534                                 param.regd = &hwsim_world_regdom_custom_01;
3535                                 break;
3536                         case 1:
3537                                 param.regd = &hwsim_world_regdom_custom_02;
3538                                 break;
3539                         case 2:
3540                                 param.reg_alpha2 = hwsim_alpha2s[0];
3541                                 break;
3542                         case 3:
3543                                 param.reg_alpha2 = hwsim_alpha2s[1];
3544                                 break;
3545                         case 4:
3546                                 param.reg_strict = true;
3547                                 param.reg_alpha2 = hwsim_alpha2s[2];
3548                                 break;
3549                         }
3550                         break;
3551                 default:
3552                         break;
3553                 }
3554
3555                 param.p2p_device = support_p2p_device;
3556                 param.use_chanctx = channels > 1;
3557
3558                 err = mac80211_hwsim_new_radio(NULL, &param);
3559                 if (err < 0)
3560                         goto out_free_radios;
3561         }
3562
3563         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3564                                  hwsim_mon_setup);
3565         if (hwsim_mon == NULL) {
3566                 err = -ENOMEM;
3567                 goto out_free_radios;
3568         }
3569
3570         rtnl_lock();
3571         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3572         if (err < 0) {
3573                 rtnl_unlock();
3574                 goto out_free_radios;
3575         }
3576
3577         err = register_netdevice(hwsim_mon);
3578         if (err < 0) {
3579                 rtnl_unlock();
3580                 goto out_free_mon;
3581         }
3582         rtnl_unlock();
3583
3584         return 0;
3585
3586 out_free_mon:
3587         free_netdev(hwsim_mon);
3588 out_free_radios:
3589         mac80211_hwsim_free();
3590 out_exit_netlink:
3591         hwsim_exit_netlink();
3592 out_unregister_driver:
3593         platform_driver_unregister(&mac80211_hwsim_driver);
3594 out_unregister_pernet:
3595         unregister_pernet_device(&hwsim_net_ops);
3596         return err;
3597 }
3598 module_init(init_mac80211_hwsim);
3599
3600 static void __exit exit_mac80211_hwsim(void)
3601 {
3602         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3603
3604         hwsim_exit_netlink();
3605
3606         mac80211_hwsim_free();
3607         unregister_netdev(hwsim_mon);
3608         platform_driver_unregister(&mac80211_hwsim_driver);
3609         unregister_pernet_device(&hwsim_net_ops);
3610 }
3611 module_exit(exit_mac80211_hwsim);