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_dbg(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_dbg(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_dbg(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                                          IEEE80211_FCTL_TODS |
 688                                          (ps ? IEEE80211_FCTL_PM : 0));
 689         hdr->duration_id = cpu_to_le16(0);
 690         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 691         memcpy(hdr->addr2, mac, ETH_ALEN);
 692         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 693
 694         rcu_read_lock();
 695         mac80211_hwsim_tx_frame(data->hw, skb,
 696                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 697         rcu_read_unlock();
 698 }
 699
 700
 701 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 702                                    struct ieee80211_vif *vif)
 703 {
 704         struct mac80211_hwsim_data *data = dat;
 705         hwsim_send_nullfunc(data, mac, vif, 1);
 706 }
 707
 708 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 709                                       struct ieee80211_vif *vif)
 710 {
 711         struct mac80211_hwsim_data *data = dat;
 712         hwsim_send_nullfunc(data, mac, vif, 0);
 713 }
 714
 715 static int hwsim_fops_ps_read(void *dat, u64 *val)
 716 {
 717         struct mac80211_hwsim_data *data = dat;
 718         *val = data->ps;
 719         return 0;
 720 }
 721
 722 static int hwsim_fops_ps_write(void *dat, u64 val)
 723 {
 724         struct mac80211_hwsim_data *data = dat;
 725         enum ps_mode old_ps;
 726
 727         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 728             val != PS_MANUAL_POLL)
 729                 return -EINVAL;
 730
 731         old_ps = data->ps;
 732         data->ps = val;
 733
 734         local_bh_disable();
 735         if (val == PS_MANUAL_POLL) {
 736                 ieee80211_iterate_active_interfaces_atomic(
 737                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 738                         hwsim_send_ps_poll, data);
 739                 data->ps_poll_pending = true;
 740         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 741                 ieee80211_iterate_active_interfaces_atomic(
 742                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 743                         hwsim_send_nullfunc_ps, data);
 744         } else 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_no_ps, data);
 748         }
 749         local_bh_enable();
 750
 751         return 0;
 752 }
 753
 754 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 755                         "%llu\n");
 756
 757 static int hwsim_write_simulate_radar(void *dat, u64 val)
 758 {
 759         struct mac80211_hwsim_data *data = dat;
 760
 761         ieee80211_radar_detected(data->hw);
 762
 763         return 0;
 764 }
 765
 766 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 767                         hwsim_write_simulate_radar, "%llu\n");
 768
 769 static int hwsim_fops_group_read(void *dat, u64 *val)
 770 {
 771         struct mac80211_hwsim_data *data = dat;
 772         *val = data->group;
 773         return 0;
 774 }
 775
 776 static int hwsim_fops_group_write(void *dat, u64 val)
 777 {
 778         struct mac80211_hwsim_data *data = dat;
 779         data->group = val;
 780         return 0;
 781 }
 782
 783 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 784                         hwsim_fops_group_read, hwsim_fops_group_write,
 785                         "%llx\n");
 786
 787 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 788                                         struct net_device *dev)
 789 {
 790         /* TODO: allow packet injection */
 791         dev_kfree_skb(skb);
 792         return NETDEV_TX_OK;
 793 }
 794
 795 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 796 {
 797         return ktime_to_us(ktime_get_real());
 798 }
 799
 800 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 801 {
 802         u64 now = mac80211_hwsim_get_tsf_raw();
 803         return cpu_to_le64(now + data->tsf_offset);
 804 }
 805
 806 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 807                                   struct ieee80211_vif *vif)
 808 {
 809         struct mac80211_hwsim_data *data = hw->priv;
 810         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 811 }
 812
 813 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 814                 struct ieee80211_vif *vif, u64 tsf)
 815 {
 816         struct mac80211_hwsim_data *data = hw->priv;
 817         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 818         u32 bcn_int = data->beacon_int;
 819         u64 delta = abs(tsf - now);
 820
 821         /* adjust after beaconing with new timestamp at old TBTT */
 822         if (tsf > now) {
 823                 data->tsf_offset += delta;
 824                 data->bcn_delta = do_div(delta, bcn_int);
 825         } else {
 826                 data->tsf_offset -= delta;
 827                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 828         }
 829 }
 830
 831 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 832                                       struct sk_buff *tx_skb,
 833                                       struct ieee80211_channel *chan)
 834 {
 835         struct mac80211_hwsim_data *data = hw->priv;
 836         struct sk_buff *skb;
 837         struct hwsim_radiotap_hdr *hdr;
 838         u16 flags;
 839         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 840         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 841
 842         if (WARN_ON(!txrate))
 843                 return;
 844
 845         if (!netif_running(hwsim_mon))
 846                 return;
 847
 848         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 849         if (skb == NULL)
 850                 return;
 851
 852         hdr = skb_push(skb, sizeof(*hdr));
 853         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 854         hdr->hdr.it_pad = 0;
 855         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 856         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 857                                           (1 << IEEE80211_RADIOTAP_RATE) |
 858                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 859                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 860         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 861         hdr->rt_flags = 0;
 862         hdr->rt_rate = txrate->bitrate / 5;
 863         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 864         flags = IEEE80211_CHAN_2GHZ;
 865         if (txrate->flags & IEEE80211_RATE_ERP_G)
 866                 flags |= IEEE80211_CHAN_OFDM;
 867         else
 868                 flags |= IEEE80211_CHAN_CCK;
 869         hdr->rt_chbitmask = cpu_to_le16(flags);
 870
 871         skb->dev = hwsim_mon;
 872         skb_reset_mac_header(skb);
 873         skb->ip_summed = CHECKSUM_UNNECESSARY;
 874         skb->pkt_type = PACKET_OTHERHOST;
 875         skb->protocol = htons(ETH_P_802_2);
 876         memset(skb->cb, 0, sizeof(skb->cb));
 877         netif_rx(skb);
 878 }
 879
 880
 881 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 882                                        const u8 *addr)
 883 {
 884         struct sk_buff *skb;
 885         struct hwsim_radiotap_ack_hdr *hdr;
 886         u16 flags;
 887         struct ieee80211_hdr *hdr11;
 888
 889         if (!netif_running(hwsim_mon))
 890                 return;
 891
 892         skb = dev_alloc_skb(100);
 893         if (skb == NULL)
 894                 return;
 895
 896         hdr = skb_put(skb, sizeof(*hdr));
 897         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 898         hdr->hdr.it_pad = 0;
 899         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 900         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 901                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 902         hdr->rt_flags = 0;
 903         hdr->pad = 0;
 904         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 905         flags = IEEE80211_CHAN_2GHZ;
 906         hdr->rt_chbitmask = cpu_to_le16(flags);
 907
 908         hdr11 = skb_put(skb, 10);
 909         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 910                                            IEEE80211_STYPE_ACK);
 911         hdr11->duration_id = cpu_to_le16(0);
 912         memcpy(hdr11->addr1, addr, ETH_ALEN);
 913
 914         skb->dev = hwsim_mon;
 915         skb_reset_mac_header(skb);
 916         skb->ip_summed = CHECKSUM_UNNECESSARY;
 917         skb->pkt_type = PACKET_OTHERHOST;
 918         skb->protocol = htons(ETH_P_802_2);
 919         memset(skb->cb, 0, sizeof(skb->cb));
 920         netif_rx(skb);
 921 }
 922
 923 struct mac80211_hwsim_addr_match_data {
 924         u8 addr[ETH_ALEN];
 925         bool ret;
 926 };
 927
 928 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 929                                      struct ieee80211_vif *vif)
 930 {
 931         struct mac80211_hwsim_addr_match_data *md = data;
 932
 933         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 934                 md->ret = true;
 935 }
 936
 937 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 938                                       const u8 *addr)
 939 {
 940         struct mac80211_hwsim_addr_match_data md = {
 941                 .ret = false,
 942         };
 943
 944         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 945                 return true;
 946
 947         memcpy(md.addr, addr, ETH_ALEN);
 948
 949         ieee80211_iterate_active_interfaces_atomic(data->hw,
 950                                                    IEEE80211_IFACE_ITER_NORMAL,
 951                                                    mac80211_hwsim_addr_iter,
 952                                                    &md);
 953
 954         return md.ret;
 955 }
 956
 957 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 958                            struct sk_buff *skb)
 959 {
 960         switch (data->ps) {
 961         case PS_DISABLED:
 962                 return true;
 963         case PS_ENABLED:
 964                 return false;
 965         case PS_AUTO_POLL:
 966                 /* TODO: accept (some) Beacons by default and other frames only
 967                  * if pending PS-Poll has been sent */
 968                 return true;
 969         case PS_MANUAL_POLL:
 970                 /* Allow unicast frames to own address if there is a pending
 971                  * PS-Poll */
 972                 if (data->ps_poll_pending &&
 973                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 974                         data->ps_poll_pending = false;
 975                         return true;
 976                 }
 977                 return false;
 978         }
 979
 980         return true;
 981 }
 982
 983 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 984                                   struct sk_buff *skb, int portid)
 985 {
 986         struct net *net;
 987         bool found = false;
 988         int res = -ENOENT;
 989
 990         rcu_read_lock();
 991         for_each_net_rcu(net) {
 992                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 993                         res = genlmsg_unicast(net, skb, portid);
 994                         found = true;
 995                         break;
 996                 }
 997         }
 998         rcu_read_unlock();
 999
1000         if (!found)
1001                 nlmsg_free(skb);
1002
1003         return res;
1004 }
1005
1006 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1007                                        struct sk_buff *my_skb,
1008                                        int dst_portid)
1009 {
1010         struct sk_buff *skb;
1011         struct mac80211_hwsim_data *data = hw->priv;
1012         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1013         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1014         void *msg_head;
1015         unsigned int hwsim_flags = 0;
1016         int i;
1017         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1018         uintptr_t cookie;
1019
1020         if (data->ps != PS_DISABLED)
1021                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1022         /* If the queue contains MAX_QUEUE skb's drop some */
1023         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1024                 /* Droping until WARN_QUEUE level */
1025                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1026                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1027                         data->tx_dropped++;
1028                 }
1029         }
1030
1031         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1032         if (skb == NULL)
1033                 goto nla_put_failure;
1034
1035         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1036                                HWSIM_CMD_FRAME);
1037         if (msg_head == NULL) {
1038                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1039                 goto nla_put_failure;
1040         }
1041
1042         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1043                     ETH_ALEN, data->addresses[1].addr))
1044                 goto nla_put_failure;
1045
1046         /* We get the skb->data */
1047         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1048                 goto nla_put_failure;
1049
1050         /* We get the flags for this transmission, and we translate them to
1051            wmediumd flags  */
1052
1053         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1054                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1055
1056         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1057                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1058
1059         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1060                 goto nla_put_failure;
1061
1062         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1063                 goto nla_put_failure;
1064
1065         /* We get the tx control (rate and retries) info*/
1066
1067         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1068                 tx_attempts[i].idx = info->status.rates[i].idx;
1069                 tx_attempts[i].count = info->status.rates[i].count;
1070         }
1071
1072         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1073                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1074                     tx_attempts))
1075                 goto nla_put_failure;
1076
1077         /* We create a cookie to identify this skb */
1078         data->pending_cookie++;
1079         cookie = data->pending_cookie;
1080         info->rate_driver_data[0] = (void *)cookie;
1081         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1082                 goto nla_put_failure;
1083
1084         genlmsg_end(skb, msg_head);
1085         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1086                 goto err_free_txskb;
1087
1088         /* Enqueue the packet */
1089         skb_queue_tail(&data->pending, my_skb);
1090         data->tx_pkts++;
1091         data->tx_bytes += my_skb->len;
1092         return;
1093
1094 nla_put_failure:
1095         nlmsg_free(skb);
1096 err_free_txskb:
1097         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1098         ieee80211_free_txskb(hw, my_skb);
1099         data->tx_failed++;
1100 }
1101
1102 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1103                                struct ieee80211_channel *c2)
1104 {
1105         if (!c1 || !c2)
1106                 return false;
1107
1108         return c1->center_freq == c2->center_freq;
1109 }
1110
1111 struct tx_iter_data {
1112         struct ieee80211_channel *channel;
1113         bool receive;
1114 };
1115
1116 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1117                                    struct ieee80211_vif *vif)
1118 {
1119         struct tx_iter_data *data = _data;
1120
1121         if (!vif->chanctx_conf)
1122                 return;
1123
1124         if (!hwsim_chans_compat(data->channel,
1125                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1126                 return;
1127
1128         data->receive = true;
1129 }
1130
1131 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1132 {
1133         /*
1134          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1135          * e.g. like this:
1136          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1137          * (but you should use a valid OUI, not that)
1138          *
1139          * If anyone wants to 'donate' a radiotap OUI/subns code
1140          * please send a patch removing this #ifdef and changing
1141          * the values accordingly.
1142          */
1143 #ifdef HWSIM_RADIOTAP_OUI
1144         struct ieee80211_vendor_radiotap *rtap;
1145
1146         /*
1147          * Note that this code requires the headroom in the SKB
1148          * that was allocated earlier.
1149          */
1150         rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1151         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1152         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1153         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1154         rtap->subns = 127;
1155
1156         /*
1157          * Radiotap vendor namespaces can (and should) also be
1158          * split into fields by using the standard radiotap
1159          * presence bitmap mechanism. Use just BIT(0) here for
1160          * the presence bitmap.
1161          */
1162         rtap->present = BIT(0);
1163         /* We have 8 bytes of (dummy) data */
1164         rtap->len = 8;
1165         /* For testing, also require it to be aligned */
1166         rtap->align = 8;
1167         /* And also test that padding works, 4 bytes */
1168         rtap->pad = 4;
1169         /* push the data */
1170         memcpy(rtap->data, "ABCDEFGH", 8);
1171         /* make sure to clear padding, mac80211 doesn't */
1172         memset(rtap->data + 8, 0, 4);
1173
1174         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1175 #endif
1176 }
1177
1178 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1179                                           struct sk_buff *skb,
1180                                           struct ieee80211_channel *chan)
1181 {
1182         struct mac80211_hwsim_data *data = hw->priv, *data2;
1183         bool ack = false;
1184         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1185         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1186         struct ieee80211_rx_status rx_status;
1187         u64 now;
1188
1189         memset(&rx_status, 0, sizeof(rx_status));
1190         rx_status.flag |= RX_FLAG_MACTIME_START;
1191         rx_status.freq = chan->center_freq;
1192         rx_status.band = chan->band;
1193         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1194                 rx_status.rate_idx =
1195                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1196                 rx_status.nss =
1197                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1198                 rx_status.encoding = RX_ENC_VHT;
1199         } else {
1200                 rx_status.rate_idx = info->control.rates[0].idx;
1201                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1202                         rx_status.encoding = RX_ENC_HT;
1203         }
1204         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1205                 rx_status.bw = RATE_INFO_BW_40;
1206         else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1207                 rx_status.bw = RATE_INFO_BW_80;
1208         else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1209                 rx_status.bw = RATE_INFO_BW_160;
1210         else
1211                 rx_status.bw = RATE_INFO_BW_20;
1212         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1213                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1214         /* TODO: simulate real signal strength (and optional packet loss) */
1215         rx_status.signal = -50;
1216         if (info->control.vif)
1217                 rx_status.signal += info->control.vif->bss_conf.txpower;
1218
1219         if (data->ps != PS_DISABLED)
1220                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1221
1222         /* release the skb's source info */
1223         skb_orphan(skb);
1224         skb_dst_drop(skb);
1225         skb->mark = 0;
1226         secpath_reset(skb);
1227         nf_reset(skb);
1228
1229         /*
1230          * Get absolute mactime here so all HWs RX at the "same time", and
1231          * absolute TX time for beacon mactime so the timestamp matches.
1232          * Giving beacons a different mactime than non-beacons looks messy, but
1233          * it helps the Toffset be exact and a ~10us mactime discrepancy
1234          * probably doesn't really matter.
1235          */
1236         if (ieee80211_is_beacon(hdr->frame_control) ||
1237             ieee80211_is_probe_resp(hdr->frame_control))
1238                 now = data->abs_bcn_ts;
1239         else
1240                 now = mac80211_hwsim_get_tsf_raw();
1241
1242         /* Copy skb to all enabled radios that are on the current frequency */
1243         spin_lock(&hwsim_radio_lock);
1244         list_for_each_entry(data2, &hwsim_radios, list) {
1245                 struct sk_buff *nskb;
1246                 struct tx_iter_data tx_iter_data = {
1247                         .receive = false,
1248                         .channel = chan,
1249                 };
1250
1251                 if (data == data2)
1252                         continue;
1253
1254                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1255                     !hwsim_ps_rx_ok(data2, skb))
1256                         continue;
1257
1258                 if (!(data->group & data2->group))
1259                         continue;
1260
1261                 if (data->netgroup != data2->netgroup)
1262                         continue;
1263
1264                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1265                     !hwsim_chans_compat(chan, data2->channel)) {
1266                         ieee80211_iterate_active_interfaces_atomic(
1267                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1268                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1269                         if (!tx_iter_data.receive)
1270                                 continue;
1271                 }
1272
1273                 /*
1274                  * reserve some space for our vendor and the normal
1275                  * radiotap header, since we're copying anyway
1276                  */
1277                 if (skb->len < PAGE_SIZE && paged_rx) {
1278                         struct page *page = alloc_page(GFP_ATOMIC);
1279
1280                         if (!page)
1281                                 continue;
1282
1283                         nskb = dev_alloc_skb(128);
1284                         if (!nskb) {
1285                                 __free_page(page);
1286                                 continue;
1287                         }
1288
1289                         memcpy(page_address(page), skb->data, skb->len);
1290                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1291                 } else {
1292                         nskb = skb_copy(skb, GFP_ATOMIC);
1293                         if (!nskb)
1294                                 continue;
1295                 }
1296
1297                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1298                         ack = true;
1299
1300                 rx_status.mactime = now + data2->tsf_offset;
1301
1302                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1303
1304                 mac80211_hwsim_add_vendor_rtap(nskb);
1305
1306                 data2->rx_pkts++;
1307                 data2->rx_bytes += nskb->len;
1308                 ieee80211_rx_irqsafe(data2->hw, nskb);
1309         }
1310         spin_unlock(&hwsim_radio_lock);
1311
1312         return ack;
1313 }
1314
1315 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1316                               struct ieee80211_tx_control *control,
1317                               struct sk_buff *skb)
1318 {
1319         struct mac80211_hwsim_data *data = hw->priv;
1320         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1321         struct ieee80211_hdr *hdr = (void *)skb->data;
1322         struct ieee80211_chanctx_conf *chanctx_conf;
1323         struct ieee80211_channel *channel;
1324         bool ack;
1325         u32 _portid;
1326
1327         if (WARN_ON(skb->len < 10)) {
1328                 /* Should not happen; just a sanity check for addr1 use */
1329                 ieee80211_free_txskb(hw, skb);
1330                 return;
1331         }
1332
1333         if (!data->use_chanctx) {
1334                 channel = data->channel;
1335         } else if (txi->hw_queue == 4) {
1336                 channel = data->tmp_chan;
1337         } else {
1338                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1339                 if (chanctx_conf)
1340                         channel = chanctx_conf->def.chan;
1341                 else
1342                         channel = NULL;
1343         }
1344
1345         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1346                 ieee80211_free_txskb(hw, skb);
1347                 return;
1348         }
1349
1350         if (data->idle && !data->tmp_chan) {
1351                 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1352                 ieee80211_free_txskb(hw, skb);
1353                 return;
1354         }
1355
1356         if (txi->control.vif)
1357                 hwsim_check_magic(txi->control.vif);
1358         if (control->sta)
1359                 hwsim_check_sta_magic(control->sta);
1360
1361         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1362                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1363                                        txi->control.rates,
1364                                        ARRAY_SIZE(txi->control.rates));
1365
1366         if (skb->len >= 24 + 8 &&
1367             ieee80211_is_probe_resp(hdr->frame_control)) {
1368                 /* fake header transmission time */
1369                 struct ieee80211_mgmt *mgmt;
1370                 struct ieee80211_rate *txrate;
1371                 u64 ts;
1372
1373                 mgmt = (struct ieee80211_mgmt *)skb->data;
1374                 txrate = ieee80211_get_tx_rate(hw, txi);
1375                 ts = mac80211_hwsim_get_tsf_raw();
1376                 mgmt->u.probe_resp.timestamp =
1377                         cpu_to_le64(ts + data->tsf_offset +
1378                                     24 * 8 * 10 / txrate->bitrate);
1379         }
1380
1381         mac80211_hwsim_monitor_rx(hw, skb, channel);
1382
1383         /* wmediumd mode check */
1384         _portid = READ_ONCE(data->wmediumd);
1385
1386         if (_portid)
1387                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1388
1389         /* NO wmediumd detected, perfect medium simulation */
1390         data->tx_pkts++;
1391         data->tx_bytes += skb->len;
1392         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1393
1394         if (ack && skb->len >= 16)
1395                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1396
1397         ieee80211_tx_info_clear_status(txi);
1398
1399         /* frame was transmitted at most favorable rate at first attempt */
1400         txi->control.rates[0].count = 1;
1401         txi->control.rates[1].idx = -1;
1402
1403         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1404                 txi->flags |= IEEE80211_TX_STAT_ACK;
1405         ieee80211_tx_status_irqsafe(hw, skb);
1406 }
1407
1408
1409 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1410 {
1411         struct mac80211_hwsim_data *data = hw->priv;
1412         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1413         data->started = true;
1414         return 0;
1415 }
1416
1417
1418 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1419 {
1420         struct mac80211_hwsim_data *data = hw->priv;
1421         data->started = false;
1422         tasklet_hrtimer_cancel(&data->beacon_timer);
1423         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1424 }
1425
1426
1427 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1428                                         struct ieee80211_vif *vif)
1429 {
1430         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1431                   __func__, ieee80211_vif_type_p2p(vif),
1432                   vif->addr);
1433         hwsim_set_magic(vif);
1434
1435         vif->cab_queue = 0;
1436         vif->hw_queue[IEEE80211_AC_VO] = 0;
1437         vif->hw_queue[IEEE80211_AC_VI] = 1;
1438         vif->hw_queue[IEEE80211_AC_BE] = 2;
1439         vif->hw_queue[IEEE80211_AC_BK] = 3;
1440
1441         return 0;
1442 }
1443
1444
1445 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1446                                            struct ieee80211_vif *vif,
1447                                            enum nl80211_iftype newtype,
1448                                            bool newp2p)
1449 {
1450         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1451         wiphy_dbg(hw->wiphy,
1452                   "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1453                   __func__, ieee80211_vif_type_p2p(vif),
1454                     newtype, vif->addr);
1455         hwsim_check_magic(vif);
1456
1457         /*
1458          * interface may change from non-AP to AP in
1459          * which case this needs to be set up again
1460          */
1461         vif->cab_queue = 0;
1462
1463         return 0;
1464 }
1465
1466 static void mac80211_hwsim_remove_interface(
1467         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1468 {
1469         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1470                   __func__, ieee80211_vif_type_p2p(vif),
1471                   vif->addr);
1472         hwsim_check_magic(vif);
1473         hwsim_clear_magic(vif);
1474 }
1475
1476 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1477                                     struct sk_buff *skb,
1478                                     struct ieee80211_channel *chan)
1479 {
1480         struct mac80211_hwsim_data *data = hw->priv;
1481         u32 _pid = READ_ONCE(data->wmediumd);
1482
1483         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1484                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1485                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1486                                        txi->control.rates,
1487                                        ARRAY_SIZE(txi->control.rates));
1488         }
1489
1490         mac80211_hwsim_monitor_rx(hw, skb, chan);
1491
1492         if (_pid)
1493                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1494
1495         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1496         dev_kfree_skb(skb);
1497 }
1498
1499 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1500                                      struct ieee80211_vif *vif)
1501 {
1502         struct mac80211_hwsim_data *data = arg;
1503         struct ieee80211_hw *hw = data->hw;
1504         struct ieee80211_tx_info *info;
1505         struct ieee80211_rate *txrate;
1506         struct ieee80211_mgmt *mgmt;
1507         struct sk_buff *skb;
1508
1509         hwsim_check_magic(vif);
1510
1511         if (vif->type != NL80211_IFTYPE_AP &&
1512             vif->type != NL80211_IFTYPE_MESH_POINT &&
1513             vif->type != NL80211_IFTYPE_ADHOC)
1514                 return;
1515
1516         skb = ieee80211_beacon_get(hw, vif);
1517         if (skb == NULL)
1518                 return;
1519         info = IEEE80211_SKB_CB(skb);
1520         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1521                 ieee80211_get_tx_rates(vif, NULL, skb,
1522                                        info->control.rates,
1523                                        ARRAY_SIZE(info->control.rates));
1524
1525         txrate = ieee80211_get_tx_rate(hw, info);
1526
1527         mgmt = (struct ieee80211_mgmt *) skb->data;
1528         /* fake header transmission time */
1529         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1530         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1531                                                data->tsf_offset +
1532                                                24 * 8 * 10 / txrate->bitrate);
1533
1534         mac80211_hwsim_tx_frame(hw, skb,
1535                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1536
1537         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1538                 ieee80211_csa_finish(vif);
1539 }
1540
1541 static enum hrtimer_restart
1542 mac80211_hwsim_beacon(struct hrtimer *timer)
1543 {
1544         struct mac80211_hwsim_data *data =
1545                 container_of(timer, struct mac80211_hwsim_data,
1546                              beacon_timer.timer);
1547         struct ieee80211_hw *hw = data->hw;
1548         u64 bcn_int = data->beacon_int;
1549         ktime_t next_bcn;
1550
1551         if (!data->started)
1552                 goto out;
1553
1554         ieee80211_iterate_active_interfaces_atomic(
1555                 hw, IEEE80211_IFACE_ITER_NORMAL,
1556                 mac80211_hwsim_beacon_tx, data);
1557
1558         /* beacon at new TBTT + beacon interval */
1559         if (data->bcn_delta) {
1560                 bcn_int -= data->bcn_delta;
1561                 data->bcn_delta = 0;
1562         }
1563
1564         next_bcn = ktime_add(hrtimer_get_expires(timer),
1565                              ns_to_ktime(bcn_int * 1000));
1566         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1567 out:
1568         return HRTIMER_NORESTART;
1569 }
1570
1571 static const char * const hwsim_chanwidths[] = {
1572         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1573         [NL80211_CHAN_WIDTH_20] = "ht20",
1574         [NL80211_CHAN_WIDTH_40] = "ht40",
1575         [NL80211_CHAN_WIDTH_80] = "vht80",
1576         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1577         [NL80211_CHAN_WIDTH_160] = "vht160",
1578 };
1579
1580 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1581 {
1582         struct mac80211_hwsim_data *data = hw->priv;
1583         struct ieee80211_conf *conf = &hw->conf;
1584         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1585                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1586                 [IEEE80211_SMPS_OFF] = "off",
1587                 [IEEE80211_SMPS_STATIC] = "static",
1588                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1589         };
1590         int idx;
1591
1592         if (conf->chandef.chan)
1593                 wiphy_dbg(hw->wiphy,
1594                           "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1595                           __func__,
1596                           conf->chandef.chan->center_freq,
1597                           conf->chandef.center_freq1,
1598                           conf->chandef.center_freq2,
1599                           hwsim_chanwidths[conf->chandef.width],
1600                           !!(conf->flags & IEEE80211_CONF_IDLE),
1601                           !!(conf->flags & IEEE80211_CONF_PS),
1602                           smps_modes[conf->smps_mode]);
1603         else
1604                 wiphy_dbg(hw->wiphy,
1605                           "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1606                           __func__,
1607                           !!(conf->flags & IEEE80211_CONF_IDLE),
1608                           !!(conf->flags & IEEE80211_CONF_PS),
1609                           smps_modes[conf->smps_mode]);
1610
1611         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1612
1613         WARN_ON(conf->chandef.chan && data->use_chanctx);
1614
1615         mutex_lock(&data->mutex);
1616         if (data->scanning && conf->chandef.chan) {
1617                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1618                         if (data->survey_data[idx].channel == data->channel) {
1619                                 data->survey_data[idx].start =
1620                                         data->survey_data[idx].next_start;
1621                                 data->survey_data[idx].end = jiffies;
1622                                 break;
1623                         }
1624                 }
1625
1626                 data->channel = conf->chandef.chan;
1627
1628                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1629                         if (data->survey_data[idx].channel &&
1630                             data->survey_data[idx].channel != data->channel)
1631                                 continue;
1632                         data->survey_data[idx].channel = data->channel;
1633                         data->survey_data[idx].next_start = jiffies;
1634                         break;
1635                 }
1636         } else {
1637                 data->channel = conf->chandef.chan;
1638         }
1639         mutex_unlock(&data->mutex);
1640
1641         if (!data->started || !data->beacon_int)
1642                 tasklet_hrtimer_cancel(&data->beacon_timer);
1643         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1644                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1645                 u32 bcn_int = data->beacon_int;
1646                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1647
1648                 tasklet_hrtimer_start(&data->beacon_timer,
1649                                       ns_to_ktime(until_tbtt * 1000),
1650                                       HRTIMER_MODE_REL);
1651         }
1652
1653         return 0;
1654 }
1655
1656
1657 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1658                                             unsigned int changed_flags,
1659                                             unsigned int *total_flags,u64 multicast)
1660 {
1661         struct mac80211_hwsim_data *data = hw->priv;
1662
1663         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1664
1665         data->rx_filter = 0;
1666         if (*total_flags & FIF_ALLMULTI)
1667                 data->rx_filter |= FIF_ALLMULTI;
1668
1669         *total_flags = data->rx_filter;
1670 }
1671
1672 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1673                                        struct ieee80211_vif *vif)
1674 {
1675         unsigned int *count = data;
1676         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1677
1678         if (vp->bcn_en)
1679                 (*count)++;
1680 }
1681
1682 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1683                                             struct ieee80211_vif *vif,
1684                                             struct ieee80211_bss_conf *info,
1685                                             u32 changed)
1686 {
1687         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1688         struct mac80211_hwsim_data *data = hw->priv;
1689
1690         hwsim_check_magic(vif);
1691
1692         wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1693                   __func__, changed, vif->addr);
1694
1695         if (changed & BSS_CHANGED_BSSID) {
1696                 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1697                           __func__, info->bssid);
1698                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1699         }
1700
1701         if (changed & BSS_CHANGED_ASSOC) {
1702                 wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1703                           info->assoc, info->aid);
1704                 vp->assoc = info->assoc;
1705                 vp->aid = info->aid;
1706         }
1707
1708         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1709                 wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1710                           info->enable_beacon, info->beacon_int);
1711                 vp->bcn_en = info->enable_beacon;
1712                 if (data->started &&
1713                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1714                     info->enable_beacon) {
1715                         u64 tsf, until_tbtt;
1716                         u32 bcn_int;
1717                         data->beacon_int = info->beacon_int * 1024;
1718                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1719                         bcn_int = data->beacon_int;
1720                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1721                         tasklet_hrtimer_start(&data->beacon_timer,
1722                                               ns_to_ktime(until_tbtt * 1000),
1723                                               HRTIMER_MODE_REL);
1724                 } else if (!info->enable_beacon) {
1725                         unsigned int count = 0;
1726                         ieee80211_iterate_active_interfaces_atomic(
1727                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1728                                 mac80211_hwsim_bcn_en_iter, &count);
1729                         wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
1730                                   count);
1731                         if (count == 0) {
1732                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1733                                 data->beacon_int = 0;
1734                         }
1735                 }
1736         }
1737
1738         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1739                 wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1740                           info->use_cts_prot);
1741         }
1742
1743         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1744                 wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1745                           info->use_short_preamble);
1746         }
1747
1748         if (changed & BSS_CHANGED_ERP_SLOT) {
1749                 wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1750         }
1751
1752         if (changed & BSS_CHANGED_HT) {
1753                 wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
1754                           info->ht_operation_mode);
1755         }
1756
1757         if (changed & BSS_CHANGED_BASIC_RATES) {
1758                 wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1759                           (unsigned long long) info->basic_rates);
1760         }
1761
1762         if (changed & BSS_CHANGED_TXPOWER)
1763                 wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1764 }
1765
1766 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1767                                   struct ieee80211_vif *vif,
1768                                   struct ieee80211_sta *sta)
1769 {
1770         hwsim_check_magic(vif);
1771         hwsim_set_sta_magic(sta);
1772
1773         return 0;
1774 }
1775
1776 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1777                                      struct ieee80211_vif *vif,
1778                                      struct ieee80211_sta *sta)
1779 {
1780         hwsim_check_magic(vif);
1781         hwsim_clear_sta_magic(sta);
1782
1783         return 0;
1784 }
1785
1786 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1787                                       struct ieee80211_vif *vif,
1788                                       enum sta_notify_cmd cmd,
1789                                       struct ieee80211_sta *sta)
1790 {
1791         hwsim_check_magic(vif);
1792
1793         switch (cmd) {
1794         case STA_NOTIFY_SLEEP:
1795         case STA_NOTIFY_AWAKE:
1796                 /* TODO: make good use of these flags */
1797                 break;
1798         default:
1799                 WARN(1, "Invalid sta notify: %d\n", cmd);
1800                 break;
1801         }
1802 }
1803
1804 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1805                                   struct ieee80211_sta *sta,
1806                                   bool set)
1807 {
1808         hwsim_check_sta_magic(sta);
1809         return 0;
1810 }
1811
1812 static int mac80211_hwsim_conf_tx(
1813         struct ieee80211_hw *hw,
1814         struct ieee80211_vif *vif, u16 queue,
1815         const struct ieee80211_tx_queue_params *params)
1816 {
1817         wiphy_dbg(hw->wiphy,
1818                   "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1819                   __func__, queue,
1820                   params->txop, params->cw_min,
1821                   params->cw_max, params->aifs);
1822         return 0;
1823 }
1824
1825 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1826                                      struct survey_info *survey)
1827 {
1828         struct mac80211_hwsim_data *hwsim = hw->priv;
1829
1830         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1831                 return -ENOENT;
1832
1833         mutex_lock(&hwsim->mutex);
1834         survey->channel = hwsim->survey_data[idx].channel;
1835         if (!survey->channel) {
1836                 mutex_unlock(&hwsim->mutex);
1837                 return -ENOENT;
1838         }
1839
1840         /*
1841          * Magically conjured dummy values --- this is only ok for simulated hardware.
1842          *
1843          * A real driver which cannot determine real values noise MUST NOT
1844          * report any, especially not a magically conjured ones :-)
1845          */
1846         survey->filled = SURVEY_INFO_NOISE_DBM |
1847                          SURVEY_INFO_TIME |
1848                          SURVEY_INFO_TIME_BUSY;
1849         survey->noise = -92;
1850         survey->time =
1851                 jiffies_to_msecs(hwsim->survey_data[idx].end -
1852                                  hwsim->survey_data[idx].start);
1853         /* report 12.5% of channel time is used */
1854         survey->time_busy = survey->time/8;
1855         mutex_unlock(&hwsim->mutex);
1856
1857         return 0;
1858 }
1859
1860 #ifdef CONFIG_NL80211_TESTMODE
1861 /*
1862  * This section contains example code for using netlink
1863  * attributes with the testmode command in nl80211.
1864  */
1865
1866 /* These enums need to be kept in sync with userspace */
1867 enum hwsim_testmode_attr {
1868         __HWSIM_TM_ATTR_INVALID = 0,
1869         HWSIM_TM_ATTR_CMD       = 1,
1870         HWSIM_TM_ATTR_PS        = 2,
1871
1872         /* keep last */
1873         __HWSIM_TM_ATTR_AFTER_LAST,
1874         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1875 };
1876
1877 enum hwsim_testmode_cmd {
1878         HWSIM_TM_CMD_SET_PS             = 0,
1879         HWSIM_TM_CMD_GET_PS             = 1,
1880         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1881         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1882 };
1883
1884 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1885         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1886         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1887 };
1888
1889 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1890                                        struct ieee80211_vif *vif,
1891                                        void *data, int len)
1892 {
1893         struct mac80211_hwsim_data *hwsim = hw->priv;
1894         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1895         struct sk_buff *skb;
1896         int err, ps;
1897
1898         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1899                         hwsim_testmode_policy, NULL);
1900         if (err)
1901                 return err;
1902
1903         if (!tb[HWSIM_TM_ATTR_CMD])
1904                 return -EINVAL;
1905
1906         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1907         case HWSIM_TM_CMD_SET_PS:
1908                 if (!tb[HWSIM_TM_ATTR_PS])
1909                         return -EINVAL;
1910                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1911                 return hwsim_fops_ps_write(hwsim, ps);
1912         case HWSIM_TM_CMD_GET_PS:
1913                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1914                                                 nla_total_size(sizeof(u32)));
1915                 if (!skb)
1916                         return -ENOMEM;
1917                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1918                         goto nla_put_failure;
1919                 return cfg80211_testmode_reply(skb);
1920         case HWSIM_TM_CMD_STOP_QUEUES:
1921                 ieee80211_stop_queues(hw);
1922                 return 0;
1923         case HWSIM_TM_CMD_WAKE_QUEUES:
1924                 ieee80211_wake_queues(hw);
1925                 return 0;
1926         default:
1927                 return -EOPNOTSUPP;
1928         }
1929
1930  nla_put_failure:
1931         kfree_skb(skb);
1932         return -ENOBUFS;
1933 }
1934 #endif
1935
1936 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1937                                        struct ieee80211_vif *vif,
1938                                        struct ieee80211_ampdu_params *params)
1939 {
1940         struct ieee80211_sta *sta = params->sta;
1941         enum ieee80211_ampdu_mlme_action action = params->action;
1942         u16 tid = params->tid;
1943
1944         switch (action) {
1945         case IEEE80211_AMPDU_TX_START:
1946                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1947                 break;
1948         case IEEE80211_AMPDU_TX_STOP_CONT:
1949         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1950         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1951                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1952                 break;
1953         case IEEE80211_AMPDU_TX_OPERATIONAL:
1954                 break;
1955         case IEEE80211_AMPDU_RX_START:
1956         case IEEE80211_AMPDU_RX_STOP:
1957                 break;
1958         default:
1959                 return -EOPNOTSUPP;
1960         }
1961
1962         return 0;
1963 }
1964
1965 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1966                                  struct ieee80211_vif *vif,
1967                                  u32 queues, bool drop)
1968 {
1969         /* Not implemented, queues only on kernel side */
1970 }
1971
1972 static void hw_scan_work(struct work_struct *work)
1973 {
1974         struct mac80211_hwsim_data *hwsim =
1975                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1976         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1977         int dwell, i;
1978
1979         mutex_lock(&hwsim->mutex);
1980         if (hwsim->scan_chan_idx >= req->n_channels) {
1981                 struct cfg80211_scan_info info = {
1982                         .aborted = false,
1983                 };
1984
1985                 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
1986                 ieee80211_scan_completed(hwsim->hw, &info);
1987                 hwsim->hw_scan_request = NULL;
1988                 hwsim->hw_scan_vif = NULL;
1989                 hwsim->tmp_chan = NULL;
1990                 mutex_unlock(&hwsim->mutex);
1991                 return;
1992         }
1993
1994         wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
1995                   req->channels[hwsim->scan_chan_idx]->center_freq);
1996
1997         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1998         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1999                                       IEEE80211_CHAN_RADAR) ||
2000             !req->n_ssids) {
2001                 dwell = 120;
2002         } else {
2003                 dwell = 30;
2004                 /* send probes */
2005                 for (i = 0; i < req->n_ssids; i++) {
2006                         struct sk_buff *probe;
2007                         struct ieee80211_mgmt *mgmt;
2008
2009                         probe = ieee80211_probereq_get(hwsim->hw,
2010                                                        hwsim->scan_addr,
2011                                                        req->ssids[i].ssid,
2012                                                        req->ssids[i].ssid_len,
2013                                                        req->ie_len);
2014                         if (!probe)
2015                                 continue;
2016
2017                         mgmt = (struct ieee80211_mgmt *) probe->data;
2018                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2019                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2020
2021                         if (req->ie_len)
2022                                 skb_put_data(probe, req->ie, req->ie_len);
2023
2024                         local_bh_disable();
2025                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2026                                                 hwsim->tmp_chan);
2027                         local_bh_enable();
2028                 }
2029         }
2030         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2031                                      msecs_to_jiffies(dwell));
2032         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2033         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2034         hwsim->survey_data[hwsim->scan_chan_idx].end =
2035                 jiffies + msecs_to_jiffies(dwell);
2036         hwsim->scan_chan_idx++;
2037         mutex_unlock(&hwsim->mutex);
2038 }
2039
2040 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2041                                   struct ieee80211_vif *vif,
2042                                   struct ieee80211_scan_request *hw_req)
2043 {
2044         struct mac80211_hwsim_data *hwsim = hw->priv;
2045         struct cfg80211_scan_request *req = &hw_req->req;
2046
2047         mutex_lock(&hwsim->mutex);
2048         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2049                 mutex_unlock(&hwsim->mutex);
2050                 return -EBUSY;
2051         }
2052         hwsim->hw_scan_request = req;
2053         hwsim->hw_scan_vif = vif;
2054         hwsim->scan_chan_idx = 0;
2055         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2056                 get_random_mask_addr(hwsim->scan_addr,
2057                                      hw_req->req.mac_addr,
2058                                      hw_req->req.mac_addr_mask);
2059         else
2060                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2061         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2062         mutex_unlock(&hwsim->mutex);
2063
2064         wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2065
2066         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2067
2068         return 0;
2069 }
2070
2071 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2072                                           struct ieee80211_vif *vif)
2073 {
2074         struct mac80211_hwsim_data *hwsim = hw->priv;
2075         struct cfg80211_scan_info info = {
2076                 .aborted = true,
2077         };
2078
2079         wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2080
2081         cancel_delayed_work_sync(&hwsim->hw_scan);
2082
2083         mutex_lock(&hwsim->mutex);
2084         ieee80211_scan_completed(hwsim->hw, &info);
2085         hwsim->tmp_chan = NULL;
2086         hwsim->hw_scan_request = NULL;
2087         hwsim->hw_scan_vif = NULL;
2088         mutex_unlock(&hwsim->mutex);
2089 }
2090
2091 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2092                                    struct ieee80211_vif *vif,
2093                                    const u8 *mac_addr)
2094 {
2095         struct mac80211_hwsim_data *hwsim = hw->priv;
2096
2097         mutex_lock(&hwsim->mutex);
2098
2099         if (hwsim->scanning) {
2100                 pr_debug("two hwsim sw_scans detected!\n");
2101                 goto out;
2102         }
2103
2104         pr_debug("hwsim sw_scan request, prepping stuff\n");
2105
2106         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2107         hwsim->scanning = true;
2108         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2109
2110 out:
2111         mutex_unlock(&hwsim->mutex);
2112 }
2113
2114 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2115                                             struct ieee80211_vif *vif)
2116 {
2117         struct mac80211_hwsim_data *hwsim = hw->priv;
2118
2119         mutex_lock(&hwsim->mutex);
2120
2121         pr_debug("hwsim sw_scan_complete\n");
2122         hwsim->scanning = false;
2123         eth_zero_addr(hwsim->scan_addr);
2124
2125         mutex_unlock(&hwsim->mutex);
2126 }
2127
2128 static void hw_roc_start(struct work_struct *work)
2129 {
2130         struct mac80211_hwsim_data *hwsim =
2131                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2132
2133         mutex_lock(&hwsim->mutex);
2134
2135         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2136         hwsim->tmp_chan = hwsim->roc_chan;
2137         ieee80211_ready_on_channel(hwsim->hw);
2138
2139         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2140                                      msecs_to_jiffies(hwsim->roc_duration));
2141
2142         mutex_unlock(&hwsim->mutex);
2143 }
2144
2145 static void hw_roc_done(struct work_struct *work)
2146 {
2147         struct mac80211_hwsim_data *hwsim =
2148                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2149
2150         mutex_lock(&hwsim->mutex);
2151         ieee80211_remain_on_channel_expired(hwsim->hw);
2152         hwsim->tmp_chan = NULL;
2153         mutex_unlock(&hwsim->mutex);
2154
2155         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2156 }
2157
2158 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2159                               struct ieee80211_vif *vif,
2160                               struct ieee80211_channel *chan,
2161                               int duration,
2162                               enum ieee80211_roc_type type)
2163 {
2164         struct mac80211_hwsim_data *hwsim = hw->priv;
2165
2166         mutex_lock(&hwsim->mutex);
2167         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2168                 mutex_unlock(&hwsim->mutex);
2169                 return -EBUSY;
2170         }
2171
2172         hwsim->roc_chan = chan;
2173         hwsim->roc_duration = duration;
2174         mutex_unlock(&hwsim->mutex);
2175
2176         wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2177                   chan->center_freq, duration);
2178         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2179
2180         return 0;
2181 }
2182
2183 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2184 {
2185         struct mac80211_hwsim_data *hwsim = hw->priv;
2186
2187         cancel_delayed_work_sync(&hwsim->roc_start);
2188         cancel_delayed_work_sync(&hwsim->roc_done);
2189
2190         mutex_lock(&hwsim->mutex);
2191         hwsim->tmp_chan = NULL;
2192         mutex_unlock(&hwsim->mutex);
2193
2194         wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2195
2196         return 0;
2197 }
2198
2199 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2200                                       struct ieee80211_chanctx_conf *ctx)
2201 {
2202         hwsim_set_chanctx_magic(ctx);
2203         wiphy_dbg(hw->wiphy,
2204                   "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2205                   ctx->def.chan->center_freq, ctx->def.width,
2206                   ctx->def.center_freq1, ctx->def.center_freq2);
2207         return 0;
2208 }
2209
2210 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2211                                           struct ieee80211_chanctx_conf *ctx)
2212 {
2213         wiphy_dbg(hw->wiphy,
2214                   "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2215                   ctx->def.chan->center_freq, ctx->def.width,
2216                   ctx->def.center_freq1, ctx->def.center_freq2);
2217         hwsim_check_chanctx_magic(ctx);
2218         hwsim_clear_chanctx_magic(ctx);
2219 }
2220
2221 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2222                                           struct ieee80211_chanctx_conf *ctx,
2223                                           u32 changed)
2224 {
2225         hwsim_check_chanctx_magic(ctx);
2226         wiphy_dbg(hw->wiphy,
2227                   "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2228                   ctx->def.chan->center_freq, ctx->def.width,
2229                   ctx->def.center_freq1, ctx->def.center_freq2);
2230 }
2231
2232 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2233                                              struct ieee80211_vif *vif,
2234                                              struct ieee80211_chanctx_conf *ctx)
2235 {
2236         hwsim_check_magic(vif);
2237         hwsim_check_chanctx_magic(ctx);
2238
2239         return 0;
2240 }
2241
2242 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2243                                                 struct ieee80211_vif *vif,
2244                                                 struct ieee80211_chanctx_conf *ctx)
2245 {
2246         hwsim_check_magic(vif);
2247         hwsim_check_chanctx_magic(ctx);
2248 }
2249
2250 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2251         "tx_pkts_nic",
2252         "tx_bytes_nic",
2253         "rx_pkts_nic",
2254         "rx_bytes_nic",
2255         "d_tx_dropped",
2256         "d_tx_failed",
2257         "d_ps_mode",
2258         "d_group",
2259 };
2260
2261 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2262
2263 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2264                                           struct ieee80211_vif *vif,
2265                                           u32 sset, u8 *data)
2266 {
2267         if (sset == ETH_SS_STATS)
2268                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2269                        sizeof(mac80211_hwsim_gstrings_stats));
2270 }
2271
2272 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2273                                             struct ieee80211_vif *vif, int sset)
2274 {
2275         if (sset == ETH_SS_STATS)
2276                 return MAC80211_HWSIM_SSTATS_LEN;
2277         return 0;
2278 }
2279
2280 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2281                                         struct ieee80211_vif *vif,
2282                                         struct ethtool_stats *stats, u64 *data)
2283 {
2284         struct mac80211_hwsim_data *ar = hw->priv;
2285         int i = 0;
2286
2287         data[i++] = ar->tx_pkts;
2288         data[i++] = ar->tx_bytes;
2289         data[i++] = ar->rx_pkts;
2290         data[i++] = ar->rx_bytes;
2291         data[i++] = ar->tx_dropped;
2292         data[i++] = ar->tx_failed;
2293         data[i++] = ar->ps;
2294         data[i++] = ar->group;
2295
2296         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2297 }
2298
2299 #define HWSIM_COMMON_OPS                                        \
2300         .tx = mac80211_hwsim_tx,                                \
2301         .start = mac80211_hwsim_start,                          \
2302         .stop = mac80211_hwsim_stop,                            \
2303         .add_interface = mac80211_hwsim_add_interface,          \
2304         .change_interface = mac80211_hwsim_change_interface,    \
2305         .remove_interface = mac80211_hwsim_remove_interface,    \
2306         .config = mac80211_hwsim_config,                        \
2307         .configure_filter = mac80211_hwsim_configure_filter,    \
2308         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2309         .sta_add = mac80211_hwsim_sta_add,                      \
2310         .sta_remove = mac80211_hwsim_sta_remove,                \
2311         .sta_notify = mac80211_hwsim_sta_notify,                \
2312         .set_tim = mac80211_hwsim_set_tim,                      \
2313         .conf_tx = mac80211_hwsim_conf_tx,                      \
2314         .get_survey = mac80211_hwsim_get_survey,                \
2315         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2316         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2317         .flush = mac80211_hwsim_flush,                          \
2318         .get_tsf = mac80211_hwsim_get_tsf,                      \
2319         .set_tsf = mac80211_hwsim_set_tsf,                      \
2320         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2321         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2322         .get_et_strings = mac80211_hwsim_get_et_strings,
2323
2324 static const struct ieee80211_ops mac80211_hwsim_ops = {
2325         HWSIM_COMMON_OPS
2326         .sw_scan_start = mac80211_hwsim_sw_scan,
2327         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2328 };
2329
2330 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2331         HWSIM_COMMON_OPS
2332         .hw_scan = mac80211_hwsim_hw_scan,
2333         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2334         .sw_scan_start = NULL,
2335         .sw_scan_complete = NULL,
2336         .remain_on_channel = mac80211_hwsim_roc,
2337         .cancel_remain_on_channel = mac80211_hwsim_croc,
2338         .add_chanctx = mac80211_hwsim_add_chanctx,
2339         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2340         .change_chanctx = mac80211_hwsim_change_chanctx,
2341         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2342         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2343 };
2344
2345 struct hwsim_new_radio_params {
2346         unsigned int channels;
2347         const char *reg_alpha2;
2348         const struct ieee80211_regdomain *regd;
2349         bool reg_strict;
2350         bool p2p_device;
2351         bool use_chanctx;
2352         bool destroy_on_close;
2353         const char *hwname;
2354         bool no_vif;
2355 };
2356
2357 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2358                                    struct genl_info *info)
2359 {
2360         if (info)
2361                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2362                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2363         else
2364                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2365                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2366 }
2367
2368 static int append_radio_msg(struct sk_buff *skb, int id,
2369                             struct hwsim_new_radio_params *param)
2370 {
2371         int ret;
2372
2373         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2374         if (ret < 0)
2375                 return ret;
2376
2377         if (param->channels) {
2378                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2379                 if (ret < 0)
2380                         return ret;
2381         }
2382
2383         if (param->reg_alpha2) {
2384                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2385                               param->reg_alpha2);
2386                 if (ret < 0)
2387                         return ret;
2388         }
2389
2390         if (param->regd) {
2391                 int i;
2392
2393                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2394                         if (hwsim_world_regdom_custom[i] != param->regd)
2395                                 continue;
2396
2397                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2398                         if (ret < 0)
2399                                 return ret;
2400                         break;
2401                 }
2402         }
2403
2404         if (param->reg_strict) {
2405                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2406                 if (ret < 0)
2407                         return ret;
2408         }
2409
2410         if (param->p2p_device) {
2411                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2412                 if (ret < 0)
2413                         return ret;
2414         }
2415
2416         if (param->use_chanctx) {
2417                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2418                 if (ret < 0)
2419                         return ret;
2420         }
2421
2422         if (param->hwname) {
2423                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2424                               strlen(param->hwname), param->hwname);
2425                 if (ret < 0)
2426                         return ret;
2427         }
2428
2429         return 0;
2430 }
2431
2432 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2433                                   struct hwsim_new_radio_params *param)
2434 {
2435         struct sk_buff *mcast_skb;
2436         void *data;
2437
2438         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2439         if (!mcast_skb)
2440                 return;
2441
2442         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2443                            HWSIM_CMD_NEW_RADIO);
2444         if (!data)
2445                 goto out_err;
2446
2447         if (append_radio_msg(mcast_skb, id, param) < 0)
2448                 goto out_err;
2449
2450         genlmsg_end(mcast_skb, data);
2451
2452         hwsim_mcast_config_msg(mcast_skb, info);
2453         return;
2454
2455 out_err:
2456         genlmsg_cancel(mcast_skb, data);
2457         nlmsg_free(mcast_skb);
2458 }
2459
2460 static int mac80211_hwsim_new_radio(struct genl_info *info,
2461                                     struct hwsim_new_radio_params *param)
2462 {
2463         int err;
2464         u8 addr[ETH_ALEN];
2465         struct mac80211_hwsim_data *data;
2466         struct ieee80211_hw *hw;
2467         enum nl80211_band band;
2468         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2469         struct net *net;
2470         int idx;
2471
2472         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2473                 return -EINVAL;
2474
2475         spin_lock_bh(&hwsim_radio_lock);
2476         idx = hwsim_radio_idx++;
2477         spin_unlock_bh(&hwsim_radio_lock);
2478
2479         if (param->use_chanctx)
2480                 ops = &mac80211_hwsim_mchan_ops;
2481         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2482         if (!hw) {
2483                 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2484                 err = -ENOMEM;
2485                 goto failed;
2486         }
2487
2488         /* ieee80211_alloc_hw_nm may have used a default name */
2489         param->hwname = wiphy_name(hw->wiphy);
2490
2491         if (info)
2492                 net = genl_info_net(info);
2493         else
2494                 net = &init_net;
2495         wiphy_net_set(hw->wiphy, net);
2496
2497         data = hw->priv;
2498         data->hw = hw;
2499
2500         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2501         if (IS_ERR(data->dev)) {
2502                 printk(KERN_DEBUG
2503                        "mac80211_hwsim: device_create failed (%ld)\n",
2504                        PTR_ERR(data->dev));
2505                 err = -ENOMEM;
2506                 goto failed_drvdata;
2507         }
2508         data->dev->driver = &mac80211_hwsim_driver.driver;
2509         err = device_bind_driver(data->dev);
2510         if (err != 0) {
2511                 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2512                        err);
2513                 goto failed_bind;
2514         }
2515
2516         skb_queue_head_init(&data->pending);
2517
2518         SET_IEEE80211_DEV(hw, data->dev);
2519         eth_zero_addr(addr);
2520         addr[0] = 0x02;
2521         addr[3] = idx >> 8;
2522         addr[4] = idx;
2523         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2524         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2525         data->addresses[1].addr[0] |= 0x40;
2526         hw->wiphy->n_addresses = 2;
2527         hw->wiphy->addresses = data->addresses;
2528
2529         data->channels = param->channels;
2530         data->use_chanctx = param->use_chanctx;
2531         data->idx = idx;
2532         data->destroy_on_close = param->destroy_on_close;
2533         if (info)
2534                 data->portid = info->snd_portid;
2535
2536         if (data->use_chanctx) {
2537                 hw->wiphy->max_scan_ssids = 255;
2538                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2539                 hw->wiphy->max_remain_on_channel_duration = 1000;
2540                 hw->wiphy->iface_combinations = &data->if_combination;
2541                 if (param->p2p_device)
2542                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2543                 else
2544                         data->if_combination = hwsim_if_comb[0];
2545                 hw->wiphy->n_iface_combinations = 1;
2546                 /* For channels > 1 DFS is not allowed */
2547                 data->if_combination.radar_detect_widths = 0;
2548                 data->if_combination.num_different_channels = data->channels;
2549         } else if (param->p2p_device) {
2550                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2551                 hw->wiphy->n_iface_combinations =
2552                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2553         } else {
2554                 hw->wiphy->iface_combinations = hwsim_if_comb;
2555                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2556         }
2557
2558         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2559         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2560         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2561
2562         hw->queues = 5;
2563         hw->offchannel_tx_hw_queue = 4;
2564         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2565                                      BIT(NL80211_IFTYPE_AP) |
2566                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2567                                      BIT(NL80211_IFTYPE_P2P_GO) |
2568                                      BIT(NL80211_IFTYPE_ADHOC) |
2569                                      BIT(NL80211_IFTYPE_MESH_POINT);
2570
2571         if (param->p2p_device)
2572                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2573
2574         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2575         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2576         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2577         ieee80211_hw_set(hw, QUEUE_CONTROL);
2578         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2579         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2580         ieee80211_hw_set(hw, MFP_CAPABLE);
2581         ieee80211_hw_set(hw, SIGNAL_DBM);
2582         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2583         if (rctbl)
2584                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2585
2586         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2587                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2588                             WIPHY_FLAG_AP_UAPSD |
2589                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2590         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2591                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2592                                NL80211_FEATURE_STATIC_SMPS |
2593                                NL80211_FEATURE_DYNAMIC_SMPS |
2594                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2595         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2596
2597         /* ask mac80211 to reserve space for magic */
2598         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2599         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2600         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2601
2602         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2603                 sizeof(hwsim_channels_2ghz));
2604         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2605                 sizeof(hwsim_channels_5ghz));
2606         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2607
2608         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2609                 struct ieee80211_supported_band *sband = &data->bands[band];
2610                 switch (band) {
2611                 case NL80211_BAND_2GHZ:
2612                         sband->channels = data->channels_2ghz;
2613                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2614                         sband->bitrates = data->rates;
2615                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2616                         break;
2617                 case NL80211_BAND_5GHZ:
2618                         sband->channels = data->channels_5ghz;
2619                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2620                         sband->bitrates = data->rates + 4;
2621                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2622
2623                         sband->vht_cap.vht_supported = true;
2624                         sband->vht_cap.cap =
2625                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2626                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2627                                 IEEE80211_VHT_CAP_RXLDPC |
2628                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2629                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2630                                 IEEE80211_VHT_CAP_TXSTBC |
2631                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2632                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2633                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2634                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2635                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2636                         sband->vht_cap.vht_mcs.rx_mcs_map =
2637                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2638                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2639                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2640                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2641                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2642                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2643                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2644                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2645                         sband->vht_cap.vht_mcs.tx_mcs_map =
2646                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2647                         break;
2648                 default:
2649                         continue;
2650                 }
2651
2652                 sband->ht_cap.ht_supported = true;
2653                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2654                                     IEEE80211_HT_CAP_GRN_FLD |
2655                                     IEEE80211_HT_CAP_SGI_20 |
2656                                     IEEE80211_HT_CAP_SGI_40 |
2657                                     IEEE80211_HT_CAP_DSSSCCK40;
2658                 sband->ht_cap.ampdu_factor = 0x3;
2659                 sband->ht_cap.ampdu_density = 0x6;
2660                 memset(&sband->ht_cap.mcs, 0,
2661                        sizeof(sband->ht_cap.mcs));
2662                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2663                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2664                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2665
2666                 hw->wiphy->bands[band] = sband;
2667         }
2668
2669         /* By default all radios belong to the first group */
2670         data->group = 1;
2671         mutex_init(&data->mutex);
2672
2673         data->netgroup = hwsim_net_get_netgroup(net);
2674
2675         /* Enable frame retransmissions for lossy channels */
2676         hw->max_rates = 4;
2677         hw->max_rate_tries = 11;
2678
2679         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2680         hw->wiphy->n_vendor_commands =
2681                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2682         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2683         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2684
2685         if (param->reg_strict)
2686                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2687         if (param->regd) {
2688                 data->regd = param->regd;
2689                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2690                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2691                 /* give the regulatory workqueue a chance to run */
2692                 schedule_timeout_interruptible(1);
2693         }
2694
2695         if (param->no_vif)
2696                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2697
2698         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2699
2700         err = ieee80211_register_hw(hw);
2701         if (err < 0) {
2702                 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2703                        err);
2704                 goto failed_hw;
2705         }
2706
2707         wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2708
2709         if (param->reg_alpha2) {
2710                 data->alpha2[0] = param->reg_alpha2[0];
2711                 data->alpha2[1] = param->reg_alpha2[1];
2712                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2713         }
2714
2715         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2716         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2717         debugfs_create_file("group", 0666, data->debugfs, data,
2718                             &hwsim_fops_group);
2719         if (!data->use_chanctx)
2720                 debugfs_create_file("dfs_simulate_radar", 0222,
2721                                     data->debugfs,
2722                                     data, &hwsim_simulate_radar);
2723
2724         tasklet_hrtimer_init(&data->beacon_timer,
2725                              mac80211_hwsim_beacon,
2726                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2727
2728         spin_lock_bh(&hwsim_radio_lock);
2729         list_add_tail(&data->list, &hwsim_radios);
2730         spin_unlock_bh(&hwsim_radio_lock);
2731
2732         if (idx > 0)
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);
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         pr_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         pr_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 (info->attrs[HWSIM_ATTR_NO_VIF])
3124                 param.no_vif = true;
3125
3126         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3127                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3128                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3129                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3130                 if (!hwname)
3131                         return -ENOMEM;
3132                 param.hwname = hwname;
3133         }
3134
3135         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3136                 param.use_chanctx = true;
3137         else
3138                 param.use_chanctx = (param.channels > 1);
3139
3140         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3141                 param.reg_alpha2 =
3142                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3143
3144         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3145                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3146
3147                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3148                         return -EINVAL;
3149                 param.regd = hwsim_world_regdom_custom[idx];
3150         }
3151
3152         ret = mac80211_hwsim_new_radio(info, &param);
3153         kfree(hwname);
3154         return ret;
3155 }
3156
3157 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3158 {
3159         struct mac80211_hwsim_data *data;
3160         s64 idx = -1;
3161         const char *hwname = NULL;
3162
3163         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3164                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3165         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3166                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3167                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3168                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3169                 if (!hwname)
3170                         return -ENOMEM;
3171         } else
3172                 return -EINVAL;
3173
3174         spin_lock_bh(&hwsim_radio_lock);
3175         list_for_each_entry(data, &hwsim_radios, list) {
3176                 if (idx >= 0) {
3177                         if (data->idx != idx)
3178                                 continue;
3179                 } else {
3180                         if (!hwname ||
3181                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3182                                 continue;
3183                 }
3184
3185                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3186                         continue;
3187
3188                 list_del(&data->list);
3189                 spin_unlock_bh(&hwsim_radio_lock);
3190                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3191                                          info);
3192                 kfree(hwname);
3193                 return 0;
3194         }
3195         spin_unlock_bh(&hwsim_radio_lock);
3196
3197         kfree(hwname);
3198         return -ENODEV;
3199 }
3200
3201 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3202 {
3203         struct mac80211_hwsim_data *data;
3204         struct sk_buff *skb;
3205         int idx, res = -ENODEV;
3206
3207         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3208                 return -EINVAL;
3209         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3210
3211         spin_lock_bh(&hwsim_radio_lock);
3212         list_for_each_entry(data, &hwsim_radios, list) {
3213                 if (data->idx != idx)
3214                         continue;
3215
3216                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3217                         continue;
3218
3219                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3220                 if (!skb) {
3221                         res = -ENOMEM;
3222                         goto out_err;
3223                 }
3224
3225                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3226                                                info->snd_seq, NULL, 0);
3227                 if (res < 0) {
3228                         nlmsg_free(skb);
3229                         goto out_err;
3230                 }
3231
3232                 genlmsg_reply(skb, info);
3233                 break;
3234         }
3235
3236 out_err:
3237         spin_unlock_bh(&hwsim_radio_lock);
3238
3239         return res;
3240 }
3241
3242 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3243                                struct netlink_callback *cb)
3244 {
3245         int idx = cb->args[0];
3246         struct mac80211_hwsim_data *data = NULL;
3247         int res;
3248
3249         spin_lock_bh(&hwsim_radio_lock);
3250
3251         if (idx == hwsim_radio_idx)
3252                 goto done;
3253
3254         list_for_each_entry(data, &hwsim_radios, list) {
3255                 if (data->idx < idx)
3256                         continue;
3257
3258                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3259                         continue;
3260
3261                 res = mac80211_hwsim_get_radio(skb, data,
3262                                                NETLINK_CB(cb->skb).portid,
3263                                                cb->nlh->nlmsg_seq, cb,
3264                                                NLM_F_MULTI);
3265                 if (res < 0)
3266                         break;
3267
3268                 idx = data->idx + 1;
3269         }
3270
3271         cb->args[0] = idx;
3272
3273 done:
3274         spin_unlock_bh(&hwsim_radio_lock);
3275         return skb->len;
3276 }
3277
3278 /* Generic Netlink operations array */
3279 static const struct genl_ops hwsim_ops[] = {
3280         {
3281                 .cmd = HWSIM_CMD_REGISTER,
3282                 .policy = hwsim_genl_policy,
3283                 .doit = hwsim_register_received_nl,
3284                 .flags = GENL_UNS_ADMIN_PERM,
3285         },
3286         {
3287                 .cmd = HWSIM_CMD_FRAME,
3288                 .policy = hwsim_genl_policy,
3289                 .doit = hwsim_cloned_frame_received_nl,
3290         },
3291         {
3292                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3293                 .policy = hwsim_genl_policy,
3294                 .doit = hwsim_tx_info_frame_received_nl,
3295         },
3296         {
3297                 .cmd = HWSIM_CMD_NEW_RADIO,
3298                 .policy = hwsim_genl_policy,
3299                 .doit = hwsim_new_radio_nl,
3300                 .flags = GENL_UNS_ADMIN_PERM,
3301         },
3302         {
3303                 .cmd = HWSIM_CMD_DEL_RADIO,
3304                 .policy = hwsim_genl_policy,
3305                 .doit = hwsim_del_radio_nl,
3306                 .flags = GENL_UNS_ADMIN_PERM,
3307         },
3308         {
3309                 .cmd = HWSIM_CMD_GET_RADIO,
3310                 .policy = hwsim_genl_policy,
3311                 .doit = hwsim_get_radio_nl,
3312                 .dumpit = hwsim_dump_radio_nl,
3313         },
3314 };
3315
3316 static struct genl_family hwsim_genl_family __ro_after_init = {
3317         .name = "MAC80211_HWSIM",
3318         .version = 1,
3319         .maxattr = HWSIM_ATTR_MAX,
3320         .netnsok = true,
3321         .module = THIS_MODULE,
3322         .ops = hwsim_ops,
3323         .n_ops = ARRAY_SIZE(hwsim_ops),
3324         .mcgrps = hwsim_mcgrps,
3325         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3326 };
3327
3328 static void destroy_radio(struct work_struct *work)
3329 {
3330         struct mac80211_hwsim_data *data =
3331                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3332
3333         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3334 }
3335
3336 static void remove_user_radios(u32 portid)
3337 {
3338         struct mac80211_hwsim_data *entry, *tmp;
3339
3340         spin_lock_bh(&hwsim_radio_lock);
3341         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3342                 if (entry->destroy_on_close && entry->portid == portid) {
3343                         list_del(&entry->list);
3344                         INIT_WORK(&entry->destroy_work, destroy_radio);
3345                         schedule_work(&entry->destroy_work);
3346                 }
3347         }
3348         spin_unlock_bh(&hwsim_radio_lock);
3349 }
3350
3351 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3352                                          unsigned long state,
3353                                          void *_notify)
3354 {
3355         struct netlink_notify *notify = _notify;
3356
3357         if (state != NETLINK_URELEASE)
3358                 return NOTIFY_DONE;
3359
3360         remove_user_radios(notify->portid);
3361
3362         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3363                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3364                        " socket, switching to perfect channel medium\n");
3365                 hwsim_register_wmediumd(notify->net, 0);
3366         }
3367         return NOTIFY_DONE;
3368
3369 }
3370
3371 static struct notifier_block hwsim_netlink_notifier = {
3372         .notifier_call = mac80211_hwsim_netlink_notify,
3373 };
3374
3375 static int __init hwsim_init_netlink(void)
3376 {
3377         int rc;
3378
3379         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3380
3381         rc = genl_register_family(&hwsim_genl_family);
3382         if (rc)
3383                 goto failure;
3384
3385         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3386         if (rc) {
3387                 genl_unregister_family(&hwsim_genl_family);
3388                 goto failure;
3389         }
3390
3391         return 0;
3392
3393 failure:
3394         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3395         return -EINVAL;
3396 }
3397
3398 static __net_init int hwsim_init_net(struct net *net)
3399 {
3400         hwsim_net_set_netgroup(net);
3401
3402         return 0;
3403 }
3404
3405 static void __net_exit hwsim_exit_net(struct net *net)
3406 {
3407         struct mac80211_hwsim_data *data, *tmp;
3408
3409         spin_lock_bh(&hwsim_radio_lock);
3410         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3411                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3412                         continue;
3413
3414                 /* Radios created in init_net are returned to init_net. */
3415                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3416                         continue;
3417
3418                 list_del(&data->list);
3419                 INIT_WORK(&data->destroy_work, destroy_radio);
3420                 schedule_work(&data->destroy_work);
3421         }
3422         spin_unlock_bh(&hwsim_radio_lock);
3423 }
3424
3425 static struct pernet_operations hwsim_net_ops = {
3426         .init = hwsim_init_net,
3427         .exit = hwsim_exit_net,
3428         .id   = &hwsim_net_id,
3429         .size = sizeof(struct hwsim_net),
3430 };
3431
3432 static void hwsim_exit_netlink(void)
3433 {
3434         /* unregister the notifier */
3435         netlink_unregister_notifier(&hwsim_netlink_notifier);
3436         /* unregister the family */
3437         genl_unregister_family(&hwsim_genl_family);
3438 }
3439
3440 static int __init init_mac80211_hwsim(void)
3441 {
3442         int i, err;
3443
3444         if (radios < 0 || radios > 100)
3445                 return -EINVAL;
3446
3447         if (channels < 1)
3448                 return -EINVAL;
3449
3450         spin_lock_init(&hwsim_radio_lock);
3451
3452         err = register_pernet_device(&hwsim_net_ops);
3453         if (err)
3454                 return err;
3455
3456         err = platform_driver_register(&mac80211_hwsim_driver);
3457         if (err)
3458                 goto out_unregister_pernet;
3459
3460         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3461         if (IS_ERR(hwsim_class)) {
3462                 err = PTR_ERR(hwsim_class);
3463                 goto out_unregister_driver;
3464         }
3465
3466         err = hwsim_init_netlink();
3467         if (err < 0)
3468                 goto out_unregister_driver;
3469
3470         for (i = 0; i < radios; i++) {
3471                 struct hwsim_new_radio_params param = { 0 };
3472
3473                 param.channels = channels;
3474
3475                 switch (regtest) {
3476                 case HWSIM_REGTEST_DIFF_COUNTRY:
3477                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3478                                 param.reg_alpha2 = hwsim_alpha2s[i];
3479                         break;
3480                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3481                         if (!i)
3482                                 param.reg_alpha2 = hwsim_alpha2s[0];
3483                         break;
3484                 case HWSIM_REGTEST_STRICT_ALL:
3485                         param.reg_strict = true;
3486                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3487                         param.reg_alpha2 = hwsim_alpha2s[0];
3488                         break;
3489                 case HWSIM_REGTEST_WORLD_ROAM:
3490                         if (i == 0)
3491                                 param.regd = &hwsim_world_regdom_custom_01;
3492                         break;
3493                 case HWSIM_REGTEST_CUSTOM_WORLD:
3494                         param.regd = &hwsim_world_regdom_custom_01;
3495                         break;
3496                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3497                         if (i == 0)
3498                                 param.regd = &hwsim_world_regdom_custom_01;
3499                         else if (i == 1)
3500                                 param.regd = &hwsim_world_regdom_custom_02;
3501                         break;
3502                 case HWSIM_REGTEST_STRICT_FOLLOW:
3503                         if (i == 0) {
3504                                 param.reg_strict = true;
3505                                 param.reg_alpha2 = hwsim_alpha2s[0];
3506                         }
3507                         break;
3508                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3509                         if (i == 0) {
3510                                 param.reg_strict = true;
3511                                 param.reg_alpha2 = hwsim_alpha2s[0];
3512                         } else if (i == 1) {
3513                                 param.reg_alpha2 = hwsim_alpha2s[1];
3514                         }
3515                         break;
3516                 case HWSIM_REGTEST_ALL:
3517                         switch (i) {
3518                         case 0:
3519                                 param.regd = &hwsim_world_regdom_custom_01;
3520                                 break;
3521                         case 1:
3522                                 param.regd = &hwsim_world_regdom_custom_02;
3523                                 break;
3524                         case 2:
3525                                 param.reg_alpha2 = hwsim_alpha2s[0];
3526                                 break;
3527                         case 3:
3528                                 param.reg_alpha2 = hwsim_alpha2s[1];
3529                                 break;
3530                         case 4:
3531                                 param.reg_strict = true;
3532                                 param.reg_alpha2 = hwsim_alpha2s[2];
3533                                 break;
3534                         }
3535                         break;
3536                 default:
3537                         break;
3538                 }
3539
3540                 param.p2p_device = support_p2p_device;
3541                 param.use_chanctx = channels > 1;
3542
3543                 err = mac80211_hwsim_new_radio(NULL, &param);
3544                 if (err < 0)
3545                         goto out_free_radios;
3546         }
3547
3548         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3549                                  hwsim_mon_setup);
3550         if (hwsim_mon == NULL) {
3551                 err = -ENOMEM;
3552                 goto out_free_radios;
3553         }
3554
3555         rtnl_lock();
3556         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3557         if (err < 0) {
3558                 rtnl_unlock();
3559                 goto out_free_radios;
3560         }
3561
3562         err = register_netdevice(hwsim_mon);
3563         if (err < 0) {
3564                 rtnl_unlock();
3565                 goto out_free_mon;
3566         }
3567         rtnl_unlock();
3568
3569         return 0;
3570
3571 out_free_mon:
3572         free_netdev(hwsim_mon);
3573 out_free_radios:
3574         mac80211_hwsim_free();
3575 out_unregister_driver:
3576         platform_driver_unregister(&mac80211_hwsim_driver);
3577 out_unregister_pernet:
3578         unregister_pernet_device(&hwsim_net_ops);
3579         return err;
3580 }
3581 module_init(init_mac80211_hwsim);
3582
3583 static void __exit exit_mac80211_hwsim(void)
3584 {
3585         pr_debug("mac80211_hwsim: unregister radios\n");
3586
3587         hwsim_exit_netlink();
3588
3589         mac80211_hwsim_free();
3590         unregister_netdev(hwsim_mon);
3591         platform_driver_unregister(&mac80211_hwsim_driver);
3592         unregister_pernet_device(&hwsim_net_ops);
3593 }
3594 module_exit(exit_mac80211_hwsim);