drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include <net/net_namespace.h>
  34 #include <net/netns/generic.h>
  35 #include "mac80211_hwsim.h"
  36
  37 #define WARN_QUEUE 100
  38 #define MAX_QUEUE 200
  39
  40 MODULE_AUTHOR("Jouni Malinen");
  41 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  42 MODULE_LICENSE("GPL");
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 static bool support_p2p_device = true;
  61 module_param(support_p2p_device, bool, 0444);
  62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  63
  64 /**
  65  * enum hwsim_regtest - the type of regulatory tests we offer
  66  *
  67  * These are the different values you can use for the regtest
  68  * module parameter. This is useful to help test world roaming
  69  * and the driver regulatory_hint() call and combinations of these.
  70  * If you want to do specific alpha2 regulatory domain tests simply
  71  * use the userspace regulatory request as that will be respected as
  72  * well without the need of this module parameter. This is designed
  73  * only for testing the driver regulatory request, world roaming
  74  * and all possible combinations.
  75  *
  76  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  77  *      this is the default value.
  78  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  79  *      hint, only one driver regulatory hint will be sent as such the
  80  *      secondary radios are expected to follow.
  81  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  82  *      request with all radios reporting the same regulatory domain.
  83  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  84  *      different regulatory domains requests. Expected behaviour is for
  85  *      an intersection to occur but each device will still use their
  86  *      respective regulatory requested domains. Subsequent radios will
  87  *      use the resulting intersection.
  88  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  89  *      this by using a custom beacon-capable regulatory domain for the first
  90  *      radio. All other device world roam.
  91  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  92  *      domain requests. All radios will adhere to this custom world regulatory
  93  *      domain.
  94  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  95  *      domain requests. The first radio will adhere to the first custom world
  96  *      regulatory domain, the second one to the second custom world regulatory
  97  *      domain. All other devices will world roam.
  98  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  99  *      settings, only the first radio will send a regulatory domain request
 100  *      and use strict settings. The rest of the radios are expected to follow.
 101  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 102  *      settings. All radios will adhere to this.
 103  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 104  *      domain settings, combined with secondary driver regulatory domain
 105  *      settings. The first radio will get a strict regulatory domain setting
 106  *      using the first driver regulatory request and the second radio will use
 107  *      non-strict settings using the second driver regulatory request. All
 108  *      other devices should follow the intersection created between the
 109  *      first two.
 110  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 111  *      at least 6 radios for a complete test. We will test in this order:
 112  *      1 - driver custom world regulatory domain
 113  *      2 - second custom world regulatory domain
 114  *      3 - first driver regulatory domain request
 115  *      4 - second driver regulatory domain request
 116  *      5 - strict regulatory domain settings using the third driver regulatory
 117  *          domain request
 118  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 119  *                 regulatory requests.
 120  */
 121 enum hwsim_regtest {
 122         HWSIM_REGTEST_DISABLED = 0,
 123         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 124         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 125         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 126         HWSIM_REGTEST_WORLD_ROAM = 4,
 127         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 128         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 129         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 130         HWSIM_REGTEST_STRICT_ALL = 8,
 131         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 132         HWSIM_REGTEST_ALL = 10,
 133 };
 134
 135 /* Set to one of the HWSIM_REGTEST_* values above */
 136 static int regtest = HWSIM_REGTEST_DISABLED;
 137 module_param(regtest, int, 0444);
 138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 139
 140 static const char *hwsim_alpha2s[] = {
 141         "FI",
 142         "AL",
 143         "US",
 144         "DE",
 145         "JP",
 146         "AL",
 147 };
 148
 149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 150         .n_reg_rules = 4,
 151         .alpha2 =  "99",
 152         .reg_rules = {
 153                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 154                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 155                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 156                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 157         }
 158 };
 159
 160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 161         .n_reg_rules = 2,
 162         .alpha2 =  "99",
 163         .reg_rules = {
 164                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 165                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 166                          NL80211_RRF_NO_IR),
 167         }
 168 };
 169
 170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 171         &hwsim_world_regdom_custom_01,
 172         &hwsim_world_regdom_custom_02,
 173 };
 174
 175 struct hwsim_vif_priv {
 176         u32 magic;
 177         u8 bssid[ETH_ALEN];
 178         bool assoc;
 179         bool bcn_en;
 180         u16 aid;
 181 };
 182
 183 #define HWSIM_VIF_MAGIC 0x69537748
 184
 185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 186 {
 187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 188         WARN(vp->magic != HWSIM_VIF_MAGIC,
 189              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 190              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 191 }
 192
 193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 194 {
 195         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 196         vp->magic = HWSIM_VIF_MAGIC;
 197 }
 198
 199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = 0;
 203 }
 204
 205 struct hwsim_sta_priv {
 206         u32 magic;
 207 };
 208
 209 #define HWSIM_STA_MAGIC 0x6d537749
 210
 211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 212 {
 213         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 214         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 215 }
 216
 217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         sp->magic = HWSIM_STA_MAGIC;
 221 }
 222
 223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = 0;
 227 }
 228
 229 struct hwsim_chanctx_priv {
 230         u32 magic;
 231 };
 232
 233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 234
 235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 236 {
 237         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 238         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 239 }
 240
 241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         cp->magic = HWSIM_CHANCTX_MAGIC;
 245 }
 246
 247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = 0;
 251 }
 252
 253 static unsigned int hwsim_net_id;
 254
 255 static int hwsim_netgroup;
 256
 257 struct hwsim_net {
 258         int netgroup;
 259         u32 wmediumd;
 260 };
 261
 262 static inline int hwsim_net_get_netgroup(struct net *net)
 263 {
 264         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 265
 266         return hwsim_net->netgroup;
 267 }
 268
 269 static inline void hwsim_net_set_netgroup(struct net *net)
 270 {
 271         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 272
 273         hwsim_net->netgroup = hwsim_netgroup++;
 274 }
 275
 276 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 277 {
 278         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 279
 280         return hwsim_net->wmediumd;
 281 }
 282
 283 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 284 {
 285         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 286
 287         hwsim_net->wmediumd = portid;
 288 }
 289
 290 static struct class *hwsim_class;
 291
 292 static struct net_device *hwsim_mon; /* global monitor netdev */
 293
 294 #define CHAN2G(_freq)  { \
 295         .band = NL80211_BAND_2GHZ, \
 296         .center_freq = (_freq), \
 297         .hw_value = (_freq), \
 298         .max_power = 20, \
 299 }
 300
 301 #define CHAN5G(_freq) { \
 302         .band = NL80211_BAND_5GHZ, \
 303         .center_freq = (_freq), \
 304         .hw_value = (_freq), \
 305         .max_power = 20, \
 306 }
 307
 308 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 309         CHAN2G(2412), /* Channel 1 */
 310         CHAN2G(2417), /* Channel 2 */
 311         CHAN2G(2422), /* Channel 3 */
 312         CHAN2G(2427), /* Channel 4 */
 313         CHAN2G(2432), /* Channel 5 */
 314         CHAN2G(2437), /* Channel 6 */
 315         CHAN2G(2442), /* Channel 7 */
 316         CHAN2G(2447), /* Channel 8 */
 317         CHAN2G(2452), /* Channel 9 */
 318         CHAN2G(2457), /* Channel 10 */
 319         CHAN2G(2462), /* Channel 11 */
 320         CHAN2G(2467), /* Channel 12 */
 321         CHAN2G(2472), /* Channel 13 */
 322         CHAN2G(2484), /* Channel 14 */
 323 };
 324
 325 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 326         CHAN5G(5180), /* Channel 36 */
 327         CHAN5G(5200), /* Channel 40 */
 328         CHAN5G(5220), /* Channel 44 */
 329         CHAN5G(5240), /* Channel 48 */
 330
 331         CHAN5G(5260), /* Channel 52 */
 332         CHAN5G(5280), /* Channel 56 */
 333         CHAN5G(5300), /* Channel 60 */
 334         CHAN5G(5320), /* Channel 64 */
 335
 336         CHAN5G(5500), /* Channel 100 */
 337         CHAN5G(5520), /* Channel 104 */
 338         CHAN5G(5540), /* Channel 108 */
 339         CHAN5G(5560), /* Channel 112 */
 340         CHAN5G(5580), /* Channel 116 */
 341         CHAN5G(5600), /* Channel 120 */
 342         CHAN5G(5620), /* Channel 124 */
 343         CHAN5G(5640), /* Channel 128 */
 344         CHAN5G(5660), /* Channel 132 */
 345         CHAN5G(5680), /* Channel 136 */
 346         CHAN5G(5700), /* Channel 140 */
 347
 348         CHAN5G(5745), /* Channel 149 */
 349         CHAN5G(5765), /* Channel 153 */
 350         CHAN5G(5785), /* Channel 157 */
 351         CHAN5G(5805), /* Channel 161 */
 352         CHAN5G(5825), /* Channel 165 */
 353         CHAN5G(5845), /* Channel 169 */
 354 };
 355
 356 static const struct ieee80211_rate hwsim_rates[] = {
 357         { .bitrate = 10 },
 358         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 359         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 360         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 361         { .bitrate = 60 },
 362         { .bitrate = 90 },
 363         { .bitrate = 120 },
 364         { .bitrate = 180 },
 365         { .bitrate = 240 },
 366         { .bitrate = 360 },
 367         { .bitrate = 480 },
 368         { .bitrate = 540 }
 369 };
 370
 371 #define OUI_QCA 0x001374
 372 #define QCA_NL80211_SUBCMD_TEST 1
 373 enum qca_nl80211_vendor_subcmds {
 374         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 375         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 376 };
 377
 378 static const struct nla_policy
 379 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 380         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 381 };
 382
 383 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 384                                           struct wireless_dev *wdev,
 385                                           const void *data, int data_len)
 386 {
 387         struct sk_buff *skb;
 388         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 389         int err;
 390         u32 val;
 391
 392         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
 393                         hwsim_vendor_test_policy, NULL);
 394         if (err)
 395                 return err;
 396         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 397                 return -EINVAL;
 398         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 399         wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
 400
 401         /* Send a vendor event as a test. Note that this would not normally be
 402          * done within a command handler, but rather, based on some other
 403          * trigger. For simplicity, this command is used to trigger the event
 404          * here.
 405          *
 406          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 407          */
 408         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 409         if (skb) {
 410                 /* skb_put() or nla_put() will fill up data within
 411                  * NL80211_ATTR_VENDOR_DATA.
 412                  */
 413
 414                 /* Add vendor data */
 415                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 416
 417                 /* Send the event - this will call nla_nest_end() */
 418                 cfg80211_vendor_event(skb, GFP_KERNEL);
 419         }
 420
 421         /* Send a response to the command */
 422         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 423         if (!skb)
 424                 return -ENOMEM;
 425
 426         /* skb_put() or nla_put() will fill up data within
 427          * NL80211_ATTR_VENDOR_DATA
 428          */
 429         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 430
 431         return cfg80211_vendor_cmd_reply(skb);
 432 }
 433
 434 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 435         {
 436                 .info = { .vendor_id = OUI_QCA,
 437                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 438                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 439                 .doit = mac80211_hwsim_vendor_cmd_test,
 440         }
 441 };
 442
 443 /* Advertise support vendor specific events */
 444 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 445         { .vendor_id = OUI_QCA, .subcmd = 1 },
 446 };
 447
 448 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 449         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 450         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 451                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 452 #ifdef CONFIG_MAC80211_MESH
 453                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 454 #endif
 455                                  BIT(NL80211_IFTYPE_AP) |
 456                                  BIT(NL80211_IFTYPE_P2P_GO) },
 457         /* must be last, see hwsim_if_comb */
 458         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 459 };
 460
 461 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 462         {
 463                 .limits = hwsim_if_limits,
 464                 /* remove the last entry which is P2P_DEVICE */
 465                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 466                 .max_interfaces = 2048,
 467                 .num_different_channels = 1,
 468                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 469                                        BIT(NL80211_CHAN_WIDTH_20) |
 470                                        BIT(NL80211_CHAN_WIDTH_40) |
 471                                        BIT(NL80211_CHAN_WIDTH_80) |
 472                                        BIT(NL80211_CHAN_WIDTH_160),
 473         },
 474 };
 475
 476 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 477         {
 478                 .limits = hwsim_if_limits,
 479                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 480                 .max_interfaces = 2048,
 481                 .num_different_channels = 1,
 482                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 483                                        BIT(NL80211_CHAN_WIDTH_20) |
 484                                        BIT(NL80211_CHAN_WIDTH_40) |
 485                                        BIT(NL80211_CHAN_WIDTH_80) |
 486                                        BIT(NL80211_CHAN_WIDTH_160),
 487         },
 488 };
 489
 490 static spinlock_t hwsim_radio_lock;
 491 static LIST_HEAD(hwsim_radios);
 492 static int hwsim_radio_idx;
 493
 494 static struct platform_driver mac80211_hwsim_driver = {
 495         .driver = {
 496                 .name = "mac80211_hwsim",
 497         },
 498 };
 499
 500 struct mac80211_hwsim_data {
 501         struct list_head list;
 502         struct ieee80211_hw *hw;
 503         struct device *dev;
 504         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 505         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 506         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 507         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 508         struct ieee80211_iface_combination if_combination;
 509
 510         struct mac_address addresses[2];
 511         int channels, idx;
 512         bool use_chanctx;
 513         bool destroy_on_close;
 514         struct work_struct destroy_work;
 515         u32 portid;
 516         char alpha2[2];
 517         const struct ieee80211_regdomain *regd;
 518
 519         struct ieee80211_channel *tmp_chan;
 520         struct ieee80211_channel *roc_chan;
 521         u32 roc_duration;
 522         struct delayed_work roc_start;
 523         struct delayed_work roc_done;
 524         struct delayed_work hw_scan;
 525         struct cfg80211_scan_request *hw_scan_request;
 526         struct ieee80211_vif *hw_scan_vif;
 527         int scan_chan_idx;
 528         u8 scan_addr[ETH_ALEN];
 529         struct {
 530                 struct ieee80211_channel *channel;
 531                 unsigned long next_start, start, end;
 532         } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 533                       ARRAY_SIZE(hwsim_channels_5ghz)];
 534
 535         struct ieee80211_channel *channel;
 536         u64 beacon_int  /* beacon interval in us */;
 537         unsigned int rx_filter;
 538         bool started, idle, scanning;
 539         struct mutex mutex;
 540         struct tasklet_hrtimer beacon_timer;
 541         enum ps_mode {
 542                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 543         } ps;
 544         bool ps_poll_pending;
 545         struct dentry *debugfs;
 546
 547         uintptr_t pending_cookie;
 548         struct sk_buff_head pending;    /* packets pending */
 549         /*
 550          * Only radios in the same group can communicate together (the
 551          * channel has to match too). Each bit represents a group. A
 552          * radio can be in more than one group.
 553          */
 554         u64 group;
 555
 556         /* group shared by radios created in the same netns */
 557         int netgroup;
 558         /* wmediumd portid responsible for netgroup of this radio */
 559         u32 wmediumd;
 560
 561         /* difference between this hw's clock and the real clock, in usecs */
 562         s64 tsf_offset;
 563         s64 bcn_delta;
 564         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 565         u64 abs_bcn_ts;
 566
 567         /* Stats */
 568         u64 tx_pkts;
 569         u64 rx_pkts;
 570         u64 tx_bytes;
 571         u64 rx_bytes;
 572         u64 tx_dropped;
 573         u64 tx_failed;
 574 };
 575
 576
 577 struct hwsim_radiotap_hdr {
 578         struct ieee80211_radiotap_header hdr;
 579         __le64 rt_tsft;
 580         u8 rt_flags;
 581         u8 rt_rate;
 582         __le16 rt_channel;
 583         __le16 rt_chbitmask;
 584 } __packed;
 585
 586 struct hwsim_radiotap_ack_hdr {
 587         struct ieee80211_radiotap_header hdr;
 588         u8 rt_flags;
 589         u8 pad;
 590         __le16 rt_channel;
 591         __le16 rt_chbitmask;
 592 } __packed;
 593
 594 /* MAC80211_HWSIM netlink family */
 595 static struct genl_family hwsim_genl_family;
 596
 597 enum hwsim_multicast_groups {
 598         HWSIM_MCGRP_CONFIG,
 599 };
 600
 601 static const struct genl_multicast_group hwsim_mcgrps[] = {
 602         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 603 };
 604
 605 /* MAC80211_HWSIM netlink policy */
 606
 607 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 608         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 609         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 610         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 611                                .len = IEEE80211_MAX_DATA_LEN },
 612         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 613         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 614         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 615         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 616                                  .len = IEEE80211_TX_MAX_RATES *
 617                                         sizeof(struct hwsim_tx_rate)},
 618         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 619         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 620         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 621         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 622         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 623         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 624         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 625         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 626         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 627         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 628         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 629 };
 630
 631 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 632                                     struct sk_buff *skb,
 633                                     struct ieee80211_channel *chan);
 634
 635 /* sysfs attributes */
 636 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 637 {
 638         struct mac80211_hwsim_data *data = dat;
 639         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 640         struct sk_buff *skb;
 641         struct ieee80211_pspoll *pspoll;
 642
 643         if (!vp->assoc)
 644                 return;
 645
 646         wiphy_debug(data->hw->wiphy,
 647                     "%s: send PS-Poll to %pM for aid %d\n",
 648                     __func__, vp->bssid, vp->aid);
 649
 650         skb = dev_alloc_skb(sizeof(*pspoll));
 651         if (!skb)
 652                 return;
 653         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 654         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 655                                             IEEE80211_STYPE_PSPOLL |
 656                                             IEEE80211_FCTL_PM);
 657         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 658         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 659         memcpy(pspoll->ta, mac, ETH_ALEN);
 660
 661         rcu_read_lock();
 662         mac80211_hwsim_tx_frame(data->hw, skb,
 663                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 664         rcu_read_unlock();
 665 }
 666
 667 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 668                                 struct ieee80211_vif *vif, int ps)
 669 {
 670         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 671         struct sk_buff *skb;
 672         struct ieee80211_hdr *hdr;
 673
 674         if (!vp->assoc)
 675                 return;
 676
 677         wiphy_debug(data->hw->wiphy,
 678                     "%s: send data::nullfunc to %pM ps=%d\n",
 679                     __func__, vp->bssid, ps);
 680
 681         skb = dev_alloc_skb(sizeof(*hdr));
 682         if (!skb)
 683                 return;
 684         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 685         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 686                                          IEEE80211_STYPE_NULLFUNC |
 687                                          (ps ? IEEE80211_FCTL_PM : 0));
 688         hdr->duration_id = cpu_to_le16(0);
 689         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 690         memcpy(hdr->addr2, mac, ETH_ALEN);
 691         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 692
 693         rcu_read_lock();
 694         mac80211_hwsim_tx_frame(data->hw, skb,
 695                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 696         rcu_read_unlock();
 697 }
 698
 699
 700 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 701                                    struct ieee80211_vif *vif)
 702 {
 703         struct mac80211_hwsim_data *data = dat;
 704         hwsim_send_nullfunc(data, mac, vif, 1);
 705 }
 706
 707 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 708                                       struct ieee80211_vif *vif)
 709 {
 710         struct mac80211_hwsim_data *data = dat;
 711         hwsim_send_nullfunc(data, mac, vif, 0);
 712 }
 713
 714 static int hwsim_fops_ps_read(void *dat, u64 *val)
 715 {
 716         struct mac80211_hwsim_data *data = dat;
 717         *val = data->ps;
 718         return 0;
 719 }
 720
 721 static int hwsim_fops_ps_write(void *dat, u64 val)
 722 {
 723         struct mac80211_hwsim_data *data = dat;
 724         enum ps_mode old_ps;
 725
 726         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 727             val != PS_MANUAL_POLL)
 728                 return -EINVAL;
 729
 730         old_ps = data->ps;
 731         data->ps = val;
 732
 733         local_bh_disable();
 734         if (val == PS_MANUAL_POLL) {
 735                 ieee80211_iterate_active_interfaces_atomic(
 736                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 737                         hwsim_send_ps_poll, data);
 738                 data->ps_poll_pending = true;
 739         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 740                 ieee80211_iterate_active_interfaces_atomic(
 741                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 742                         hwsim_send_nullfunc_ps, data);
 743         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 744                 ieee80211_iterate_active_interfaces_atomic(
 745                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 746                         hwsim_send_nullfunc_no_ps, data);
 747         }
 748         local_bh_enable();
 749
 750         return 0;
 751 }
 752
 753 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 754                         "%llu\n");
 755
 756 static int hwsim_write_simulate_radar(void *dat, u64 val)
 757 {
 758         struct mac80211_hwsim_data *data = dat;
 759
 760         ieee80211_radar_detected(data->hw);
 761
 762         return 0;
 763 }
 764
 765 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 766                         hwsim_write_simulate_radar, "%llu\n");
 767
 768 static int hwsim_fops_group_read(void *dat, u64 *val)
 769 {
 770         struct mac80211_hwsim_data *data = dat;
 771         *val = data->group;
 772         return 0;
 773 }
 774
 775 static int hwsim_fops_group_write(void *dat, u64 val)
 776 {
 777         struct mac80211_hwsim_data *data = dat;
 778         data->group = val;
 779         return 0;
 780 }
 781
 782 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 783                         hwsim_fops_group_read, hwsim_fops_group_write,
 784                         "%llx\n");
 785
 786 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 787                                         struct net_device *dev)
 788 {
 789         /* TODO: allow packet injection */
 790         dev_kfree_skb(skb);
 791         return NETDEV_TX_OK;
 792 }
 793
 794 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 795 {
 796         return ktime_to_us(ktime_get_real());
 797 }
 798
 799 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 800 {
 801         u64 now = mac80211_hwsim_get_tsf_raw();
 802         return cpu_to_le64(now + data->tsf_offset);
 803 }
 804
 805 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 806                                   struct ieee80211_vif *vif)
 807 {
 808         struct mac80211_hwsim_data *data = hw->priv;
 809         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 810 }
 811
 812 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 813                 struct ieee80211_vif *vif, u64 tsf)
 814 {
 815         struct mac80211_hwsim_data *data = hw->priv;
 816         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 817         u32 bcn_int = data->beacon_int;
 818         u64 delta = abs(tsf - now);
 819
 820         /* adjust after beaconing with new timestamp at old TBTT */
 821         if (tsf > now) {
 822                 data->tsf_offset += delta;
 823                 data->bcn_delta = do_div(delta, bcn_int);
 824         } else {
 825                 data->tsf_offset -= delta;
 826                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 827         }
 828 }
 829
 830 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 831                                       struct sk_buff *tx_skb,
 832                                       struct ieee80211_channel *chan)
 833 {
 834         struct mac80211_hwsim_data *data = hw->priv;
 835         struct sk_buff *skb;
 836         struct hwsim_radiotap_hdr *hdr;
 837         u16 flags;
 838         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 839         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 840
 841         if (WARN_ON(!txrate))
 842                 return;
 843
 844         if (!netif_running(hwsim_mon))
 845                 return;
 846
 847         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 848         if (skb == NULL)
 849                 return;
 850
 851         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 852         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 853         hdr->hdr.it_pad = 0;
 854         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 855         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 856                                           (1 << IEEE80211_RADIOTAP_RATE) |
 857                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 858                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 859         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 860         hdr->rt_flags = 0;
 861         hdr->rt_rate = txrate->bitrate / 5;
 862         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 863         flags = IEEE80211_CHAN_2GHZ;
 864         if (txrate->flags & IEEE80211_RATE_ERP_G)
 865                 flags |= IEEE80211_CHAN_OFDM;
 866         else
 867                 flags |= IEEE80211_CHAN_CCK;
 868         hdr->rt_chbitmask = cpu_to_le16(flags);
 869
 870         skb->dev = hwsim_mon;
 871         skb_reset_mac_header(skb);
 872         skb->ip_summed = CHECKSUM_UNNECESSARY;
 873         skb->pkt_type = PACKET_OTHERHOST;
 874         skb->protocol = htons(ETH_P_802_2);
 875         memset(skb->cb, 0, sizeof(skb->cb));
 876         netif_rx(skb);
 877 }
 878
 879
 880 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 881                                        const u8 *addr)
 882 {
 883         struct sk_buff *skb;
 884         struct hwsim_radiotap_ack_hdr *hdr;
 885         u16 flags;
 886         struct ieee80211_hdr *hdr11;
 887
 888         if (!netif_running(hwsim_mon))
 889                 return;
 890
 891         skb = dev_alloc_skb(100);
 892         if (skb == NULL)
 893                 return;
 894
 895         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 896         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 897         hdr->hdr.it_pad = 0;
 898         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 899         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 900                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 901         hdr->rt_flags = 0;
 902         hdr->pad = 0;
 903         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 904         flags = IEEE80211_CHAN_2GHZ;
 905         hdr->rt_chbitmask = cpu_to_le16(flags);
 906
 907         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 908         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 909                                            IEEE80211_STYPE_ACK);
 910         hdr11->duration_id = cpu_to_le16(0);
 911         memcpy(hdr11->addr1, addr, ETH_ALEN);
 912
 913         skb->dev = hwsim_mon;
 914         skb_reset_mac_header(skb);
 915         skb->ip_summed = CHECKSUM_UNNECESSARY;
 916         skb->pkt_type = PACKET_OTHERHOST;
 917         skb->protocol = htons(ETH_P_802_2);
 918         memset(skb->cb, 0, sizeof(skb->cb));
 919         netif_rx(skb);
 920 }
 921
 922 struct mac80211_hwsim_addr_match_data {
 923         u8 addr[ETH_ALEN];
 924         bool ret;
 925 };
 926
 927 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 928                                      struct ieee80211_vif *vif)
 929 {
 930         struct mac80211_hwsim_addr_match_data *md = data;
 931
 932         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 933                 md->ret = true;
 934 }
 935
 936 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 937                                       const u8 *addr)
 938 {
 939         struct mac80211_hwsim_addr_match_data md = {
 940                 .ret = false,
 941         };
 942
 943         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 944                 return true;
 945
 946         memcpy(md.addr, addr, ETH_ALEN);
 947
 948         ieee80211_iterate_active_interfaces_atomic(data->hw,
 949                                                    IEEE80211_IFACE_ITER_NORMAL,
 950                                                    mac80211_hwsim_addr_iter,
 951                                                    &md);
 952
 953         return md.ret;
 954 }
 955
 956 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 957                            struct sk_buff *skb)
 958 {
 959         switch (data->ps) {
 960         case PS_DISABLED:
 961                 return true;
 962         case PS_ENABLED:
 963                 return false;
 964         case PS_AUTO_POLL:
 965                 /* TODO: accept (some) Beacons by default and other frames only
 966                  * if pending PS-Poll has been sent */
 967                 return true;
 968         case PS_MANUAL_POLL:
 969                 /* Allow unicast frames to own address if there is a pending
 970                  * PS-Poll */
 971                 if (data->ps_poll_pending &&
 972                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 973                         data->ps_poll_pending = false;
 974                         return true;
 975                 }
 976                 return false;
 977         }
 978
 979         return true;
 980 }
 981
 982 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 983                                   struct sk_buff *skb, int portid)
 984 {
 985         struct net *net;
 986         bool found = false;
 987         int res = -ENOENT;
 988
 989         rcu_read_lock();
 990         for_each_net_rcu(net) {
 991                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 992                         res = genlmsg_unicast(net, skb, portid);
 993                         found = true;
 994                         break;
 995                 }
 996         }
 997         rcu_read_unlock();
 998
 999         if (!found)
1000                 nlmsg_free(skb);
1001
1002         return res;
1003 }
1004
1005 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1006                                        struct sk_buff *my_skb,
1007                                        int dst_portid)
1008 {
1009         struct sk_buff *skb;
1010         struct mac80211_hwsim_data *data = hw->priv;
1011         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1012         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1013         void *msg_head;
1014         unsigned int hwsim_flags = 0;
1015         int i;
1016         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1017         uintptr_t cookie;
1018
1019         if (data->ps != PS_DISABLED)
1020                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1021         /* If the queue contains MAX_QUEUE skb's drop some */
1022         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1023                 /* Droping until WARN_QUEUE level */
1024                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1025                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1026                         data->tx_dropped++;
1027                 }
1028         }
1029
1030         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1031         if (skb == NULL)
1032                 goto nla_put_failure;
1033
1034         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1035                                HWSIM_CMD_FRAME);
1036         if (msg_head == NULL) {
1037                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1038                 goto nla_put_failure;
1039         }
1040
1041         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1042                     ETH_ALEN, data->addresses[1].addr))
1043                 goto nla_put_failure;
1044
1045         /* We get the skb->data */
1046         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1047                 goto nla_put_failure;
1048
1049         /* We get the flags for this transmission, and we translate them to
1050            wmediumd flags  */
1051
1052         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1053                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1054
1055         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1056                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1057
1058         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1059                 goto nla_put_failure;
1060
1061         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1062                 goto nla_put_failure;
1063
1064         /* We get the tx control (rate and retries) info*/
1065
1066         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1067                 tx_attempts[i].idx = info->status.rates[i].idx;
1068                 tx_attempts[i].count = info->status.rates[i].count;
1069         }
1070
1071         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1072                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1073                     tx_attempts))
1074                 goto nla_put_failure;
1075
1076         /* We create a cookie to identify this skb */
1077         data->pending_cookie++;
1078         cookie = data->pending_cookie;
1079         info->rate_driver_data[0] = (void *)cookie;
1080         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1081                 goto nla_put_failure;
1082
1083         genlmsg_end(skb, msg_head);
1084         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1085                 goto err_free_txskb;
1086
1087         /* Enqueue the packet */
1088         skb_queue_tail(&data->pending, my_skb);
1089         data->tx_pkts++;
1090         data->tx_bytes += my_skb->len;
1091         return;
1092
1093 nla_put_failure:
1094         nlmsg_free(skb);
1095 err_free_txskb:
1096         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1097         ieee80211_free_txskb(hw, my_skb);
1098         data->tx_failed++;
1099 }
1100
1101 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1102                                struct ieee80211_channel *c2)
1103 {
1104         if (!c1 || !c2)
1105                 return false;
1106
1107         return c1->center_freq == c2->center_freq;
1108 }
1109
1110 struct tx_iter_data {
1111         struct ieee80211_channel *channel;
1112         bool receive;
1113 };
1114
1115 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1116                                    struct ieee80211_vif *vif)
1117 {
1118         struct tx_iter_data *data = _data;
1119
1120         if (!vif->chanctx_conf)
1121                 return;
1122
1123         if (!hwsim_chans_compat(data->channel,
1124                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1125                 return;
1126
1127         data->receive = true;
1128 }
1129
1130 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1131 {
1132         /*
1133          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1134          * e.g. like this:
1135          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1136          * (but you should use a valid OUI, not that)
1137          *
1138          * If anyone wants to 'donate' a radiotap OUI/subns code
1139          * please send a patch removing this #ifdef and changing
1140          * the values accordingly.
1141          */
1142 #ifdef HWSIM_RADIOTAP_OUI
1143         struct ieee80211_vendor_radiotap *rtap;
1144
1145         /*
1146          * Note that this code requires the headroom in the SKB
1147          * that was allocated earlier.
1148          */
1149         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1150         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1151         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1152         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1153         rtap->subns = 127;
1154
1155         /*
1156          * Radiotap vendor namespaces can (and should) also be
1157          * split into fields by using the standard radiotap
1158          * presence bitmap mechanism. Use just BIT(0) here for
1159          * the presence bitmap.
1160          */
1161         rtap->present = BIT(0);
1162         /* We have 8 bytes of (dummy) data */
1163         rtap->len = 8;
1164         /* For testing, also require it to be aligned */
1165         rtap->align = 8;
1166         /* And also test that padding works, 4 bytes */
1167         rtap->pad = 4;
1168         /* push the data */
1169         memcpy(rtap->data, "ABCDEFGH", 8);
1170         /* make sure to clear padding, mac80211 doesn't */
1171         memset(rtap->data + 8, 0, 4);
1172
1173         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1174 #endif
1175 }
1176
1177 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1178                                           struct sk_buff *skb,
1179                                           struct ieee80211_channel *chan)
1180 {
1181         struct mac80211_hwsim_data *data = hw->priv, *data2;
1182         bool ack = false;
1183         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1184         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1185         struct ieee80211_rx_status rx_status;
1186         u64 now;
1187
1188         memset(&rx_status, 0, sizeof(rx_status));
1189         rx_status.flag |= RX_FLAG_MACTIME_START;
1190         rx_status.freq = chan->center_freq;
1191         rx_status.band = chan->band;
1192         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1193                 rx_status.rate_idx =
1194                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1195                 rx_status.nss =
1196                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1197                 rx_status.encoding = RX_ENC_VHT;
1198         } else {
1199                 rx_status.rate_idx = info->control.rates[0].idx;
1200                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1201                         rx_status.encoding = RX_ENC_HT;
1202         }
1203         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1204                 rx_status.enc_flags |= RX_ENC_FLAG_40MHZ;
1205         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1206                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1207         /* TODO: simulate real signal strength (and optional packet loss) */
1208         rx_status.signal = -50;
1209         if (info->control.vif)
1210                 rx_status.signal += info->control.vif->bss_conf.txpower;
1211
1212         if (data->ps != PS_DISABLED)
1213                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1214
1215         /* release the skb's source info */
1216         skb_orphan(skb);
1217         skb_dst_drop(skb);
1218         skb->mark = 0;
1219         secpath_reset(skb);
1220         nf_reset(skb);
1221
1222         /*
1223          * Get absolute mactime here so all HWs RX at the "same time", and
1224          * absolute TX time for beacon mactime so the timestamp matches.
1225          * Giving beacons a different mactime than non-beacons looks messy, but
1226          * it helps the Toffset be exact and a ~10us mactime discrepancy
1227          * probably doesn't really matter.
1228          */
1229         if (ieee80211_is_beacon(hdr->frame_control) ||
1230             ieee80211_is_probe_resp(hdr->frame_control))
1231                 now = data->abs_bcn_ts;
1232         else
1233                 now = mac80211_hwsim_get_tsf_raw();
1234
1235         /* Copy skb to all enabled radios that are on the current frequency */
1236         spin_lock(&hwsim_radio_lock);
1237         list_for_each_entry(data2, &hwsim_radios, list) {
1238                 struct sk_buff *nskb;
1239                 struct tx_iter_data tx_iter_data = {
1240                         .receive = false,
1241                         .channel = chan,
1242                 };
1243
1244                 if (data == data2)
1245                         continue;
1246
1247                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1248                     !hwsim_ps_rx_ok(data2, skb))
1249                         continue;
1250
1251                 if (!(data->group & data2->group))
1252                         continue;
1253
1254                 if (data->netgroup != data2->netgroup)
1255                         continue;
1256
1257                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1258                     !hwsim_chans_compat(chan, data2->channel)) {
1259                         ieee80211_iterate_active_interfaces_atomic(
1260                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1261                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1262                         if (!tx_iter_data.receive)
1263                                 continue;
1264                 }
1265
1266                 /*
1267                  * reserve some space for our vendor and the normal
1268                  * radiotap header, since we're copying anyway
1269                  */
1270                 if (skb->len < PAGE_SIZE && paged_rx) {
1271                         struct page *page = alloc_page(GFP_ATOMIC);
1272
1273                         if (!page)
1274                                 continue;
1275
1276                         nskb = dev_alloc_skb(128);
1277                         if (!nskb) {
1278                                 __free_page(page);
1279                                 continue;
1280                         }
1281
1282                         memcpy(page_address(page), skb->data, skb->len);
1283                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1284                 } else {
1285                         nskb = skb_copy(skb, GFP_ATOMIC);
1286                         if (!nskb)
1287                                 continue;
1288                 }
1289
1290                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1291                         ack = true;
1292
1293                 rx_status.mactime = now + data2->tsf_offset;
1294
1295                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1296
1297                 mac80211_hwsim_add_vendor_rtap(nskb);
1298
1299                 data2->rx_pkts++;
1300                 data2->rx_bytes += nskb->len;
1301                 ieee80211_rx_irqsafe(data2->hw, nskb);
1302         }
1303         spin_unlock(&hwsim_radio_lock);
1304
1305         return ack;
1306 }
1307
1308 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1309                               struct ieee80211_tx_control *control,
1310                               struct sk_buff *skb)
1311 {
1312         struct mac80211_hwsim_data *data = hw->priv;
1313         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1314         struct ieee80211_hdr *hdr = (void *)skb->data;
1315         struct ieee80211_chanctx_conf *chanctx_conf;
1316         struct ieee80211_channel *channel;
1317         bool ack;
1318         u32 _portid;
1319
1320         if (WARN_ON(skb->len < 10)) {
1321                 /* Should not happen; just a sanity check for addr1 use */
1322                 ieee80211_free_txskb(hw, skb);
1323                 return;
1324         }
1325
1326         if (!data->use_chanctx) {
1327                 channel = data->channel;
1328         } else if (txi->hw_queue == 4) {
1329                 channel = data->tmp_chan;
1330         } else {
1331                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1332                 if (chanctx_conf)
1333                         channel = chanctx_conf->def.chan;
1334                 else
1335                         channel = NULL;
1336         }
1337
1338         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1339                 ieee80211_free_txskb(hw, skb);
1340                 return;
1341         }
1342
1343         if (data->idle && !data->tmp_chan) {
1344                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1345                 ieee80211_free_txskb(hw, skb);
1346                 return;
1347         }
1348
1349         if (txi->control.vif)
1350                 hwsim_check_magic(txi->control.vif);
1351         if (control->sta)
1352                 hwsim_check_sta_magic(control->sta);
1353
1354         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1355                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1356                                        txi->control.rates,
1357                                        ARRAY_SIZE(txi->control.rates));
1358
1359         txi->rate_driver_data[0] = channel;
1360
1361         if (skb->len >= 24 + 8 &&
1362             ieee80211_is_probe_resp(hdr->frame_control)) {
1363                 /* fake header transmission time */
1364                 struct ieee80211_mgmt *mgmt;
1365                 struct ieee80211_rate *txrate;
1366                 u64 ts;
1367
1368                 mgmt = (struct ieee80211_mgmt *)skb->data;
1369                 txrate = ieee80211_get_tx_rate(hw, txi);
1370                 ts = mac80211_hwsim_get_tsf_raw();
1371                 mgmt->u.probe_resp.timestamp =
1372                         cpu_to_le64(ts + data->tsf_offset +
1373                                     24 * 8 * 10 / txrate->bitrate);
1374         }
1375
1376         mac80211_hwsim_monitor_rx(hw, skb, channel);
1377
1378         /* wmediumd mode check */
1379         _portid = ACCESS_ONCE(data->wmediumd);
1380
1381         if (_portid)
1382                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1383
1384         /* NO wmediumd detected, perfect medium simulation */
1385         data->tx_pkts++;
1386         data->tx_bytes += skb->len;
1387         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1388
1389         if (ack && skb->len >= 16)
1390                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1391
1392         ieee80211_tx_info_clear_status(txi);
1393
1394         /* frame was transmitted at most favorable rate at first attempt */
1395         txi->control.rates[0].count = 1;
1396         txi->control.rates[1].idx = -1;
1397
1398         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1399                 txi->flags |= IEEE80211_TX_STAT_ACK;
1400         ieee80211_tx_status_irqsafe(hw, skb);
1401 }
1402
1403
1404 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1405 {
1406         struct mac80211_hwsim_data *data = hw->priv;
1407         wiphy_debug(hw->wiphy, "%s\n", __func__);
1408         data->started = true;
1409         return 0;
1410 }
1411
1412
1413 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1414 {
1415         struct mac80211_hwsim_data *data = hw->priv;
1416         data->started = false;
1417         tasklet_hrtimer_cancel(&data->beacon_timer);
1418         wiphy_debug(hw->wiphy, "%s\n", __func__);
1419 }
1420
1421
1422 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1423                                         struct ieee80211_vif *vif)
1424 {
1425         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1426                     __func__, ieee80211_vif_type_p2p(vif),
1427                     vif->addr);
1428         hwsim_set_magic(vif);
1429
1430         vif->cab_queue = 0;
1431         vif->hw_queue[IEEE80211_AC_VO] = 0;
1432         vif->hw_queue[IEEE80211_AC_VI] = 1;
1433         vif->hw_queue[IEEE80211_AC_BE] = 2;
1434         vif->hw_queue[IEEE80211_AC_BK] = 3;
1435
1436         return 0;
1437 }
1438
1439
1440 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1441                                            struct ieee80211_vif *vif,
1442                                            enum nl80211_iftype newtype,
1443                                            bool newp2p)
1444 {
1445         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1446         wiphy_debug(hw->wiphy,
1447                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1448                     __func__, ieee80211_vif_type_p2p(vif),
1449                     newtype, vif->addr);
1450         hwsim_check_magic(vif);
1451
1452         /*
1453          * interface may change from non-AP to AP in
1454          * which case this needs to be set up again
1455          */
1456         vif->cab_queue = 0;
1457
1458         return 0;
1459 }
1460
1461 static void mac80211_hwsim_remove_interface(
1462         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1463 {
1464         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1465                     __func__, ieee80211_vif_type_p2p(vif),
1466                     vif->addr);
1467         hwsim_check_magic(vif);
1468         hwsim_clear_magic(vif);
1469 }
1470
1471 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1472                                     struct sk_buff *skb,
1473                                     struct ieee80211_channel *chan)
1474 {
1475         struct mac80211_hwsim_data *data = hw->priv;
1476         u32 _pid = ACCESS_ONCE(data->wmediumd);
1477
1478         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1479                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1480                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1481                                        txi->control.rates,
1482                                        ARRAY_SIZE(txi->control.rates));
1483         }
1484
1485         mac80211_hwsim_monitor_rx(hw, skb, chan);
1486
1487         if (_pid)
1488                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1489
1490         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1491         dev_kfree_skb(skb);
1492 }
1493
1494 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1495                                      struct ieee80211_vif *vif)
1496 {
1497         struct mac80211_hwsim_data *data = arg;
1498         struct ieee80211_hw *hw = data->hw;
1499         struct ieee80211_tx_info *info;
1500         struct ieee80211_rate *txrate;
1501         struct ieee80211_mgmt *mgmt;
1502         struct sk_buff *skb;
1503
1504         hwsim_check_magic(vif);
1505
1506         if (vif->type != NL80211_IFTYPE_AP &&
1507             vif->type != NL80211_IFTYPE_MESH_POINT &&
1508             vif->type != NL80211_IFTYPE_ADHOC)
1509                 return;
1510
1511         skb = ieee80211_beacon_get(hw, vif);
1512         if (skb == NULL)
1513                 return;
1514         info = IEEE80211_SKB_CB(skb);
1515         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1516                 ieee80211_get_tx_rates(vif, NULL, skb,
1517                                        info->control.rates,
1518                                        ARRAY_SIZE(info->control.rates));
1519
1520         txrate = ieee80211_get_tx_rate(hw, info);
1521
1522         mgmt = (struct ieee80211_mgmt *) skb->data;
1523         /* fake header transmission time */
1524         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1525         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1526                                                data->tsf_offset +
1527                                                24 * 8 * 10 / txrate->bitrate);
1528
1529         mac80211_hwsim_tx_frame(hw, skb,
1530                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1531
1532         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1533                 ieee80211_csa_finish(vif);
1534 }
1535
1536 static enum hrtimer_restart
1537 mac80211_hwsim_beacon(struct hrtimer *timer)
1538 {
1539         struct mac80211_hwsim_data *data =
1540                 container_of(timer, struct mac80211_hwsim_data,
1541                              beacon_timer.timer);
1542         struct ieee80211_hw *hw = data->hw;
1543         u64 bcn_int = data->beacon_int;
1544         ktime_t next_bcn;
1545
1546         if (!data->started)
1547                 goto out;
1548
1549         ieee80211_iterate_active_interfaces_atomic(
1550                 hw, IEEE80211_IFACE_ITER_NORMAL,
1551                 mac80211_hwsim_beacon_tx, data);
1552
1553         /* beacon at new TBTT + beacon interval */
1554         if (data->bcn_delta) {
1555                 bcn_int -= data->bcn_delta;
1556                 data->bcn_delta = 0;
1557         }
1558
1559         next_bcn = ktime_add(hrtimer_get_expires(timer),
1560                              ns_to_ktime(bcn_int * 1000));
1561         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1562 out:
1563         return HRTIMER_NORESTART;
1564 }
1565
1566 static const char * const hwsim_chanwidths[] = {
1567         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1568         [NL80211_CHAN_WIDTH_20] = "ht20",
1569         [NL80211_CHAN_WIDTH_40] = "ht40",
1570         [NL80211_CHAN_WIDTH_80] = "vht80",
1571         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1572         [NL80211_CHAN_WIDTH_160] = "vht160",
1573 };
1574
1575 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1576 {
1577         struct mac80211_hwsim_data *data = hw->priv;
1578         struct ieee80211_conf *conf = &hw->conf;
1579         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1580                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1581                 [IEEE80211_SMPS_OFF] = "off",
1582                 [IEEE80211_SMPS_STATIC] = "static",
1583                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1584         };
1585         int idx;
1586
1587         if (conf->chandef.chan)
1588                 wiphy_debug(hw->wiphy,
1589                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1590                             __func__,
1591                             conf->chandef.chan->center_freq,
1592                             conf->chandef.center_freq1,
1593                             conf->chandef.center_freq2,
1594                             hwsim_chanwidths[conf->chandef.width],
1595                             !!(conf->flags & IEEE80211_CONF_IDLE),
1596                             !!(conf->flags & IEEE80211_CONF_PS),
1597                             smps_modes[conf->smps_mode]);
1598         else
1599                 wiphy_debug(hw->wiphy,
1600                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1601                             __func__,
1602                             !!(conf->flags & IEEE80211_CONF_IDLE),
1603                             !!(conf->flags & IEEE80211_CONF_PS),
1604                             smps_modes[conf->smps_mode]);
1605
1606         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1607
1608         WARN_ON(conf->chandef.chan && data->use_chanctx);
1609
1610         mutex_lock(&data->mutex);
1611         if (data->scanning && conf->chandef.chan) {
1612                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1613                         if (data->survey_data[idx].channel == data->channel) {
1614                                 data->survey_data[idx].start =
1615                                         data->survey_data[idx].next_start;
1616                                 data->survey_data[idx].end = jiffies;
1617                                 break;
1618                         }
1619                 }
1620
1621                 data->channel = conf->chandef.chan;
1622
1623                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1624                         if (data->survey_data[idx].channel &&
1625                             data->survey_data[idx].channel != data->channel)
1626                                 continue;
1627                         data->survey_data[idx].channel = data->channel;
1628                         data->survey_data[idx].next_start = jiffies;
1629                         break;
1630                 }
1631         } else {
1632                 data->channel = conf->chandef.chan;
1633         }
1634         mutex_unlock(&data->mutex);
1635
1636         if (!data->started || !data->beacon_int)
1637                 tasklet_hrtimer_cancel(&data->beacon_timer);
1638         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1639                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1640                 u32 bcn_int = data->beacon_int;
1641                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1642
1643                 tasklet_hrtimer_start(&data->beacon_timer,
1644                                       ns_to_ktime(until_tbtt * 1000),
1645                                       HRTIMER_MODE_REL);
1646         }
1647
1648         return 0;
1649 }
1650
1651
1652 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1653                                             unsigned int changed_flags,
1654                                             unsigned int *total_flags,u64 multicast)
1655 {
1656         struct mac80211_hwsim_data *data = hw->priv;
1657
1658         wiphy_debug(hw->wiphy, "%s\n", __func__);
1659
1660         data->rx_filter = 0;
1661         if (*total_flags & FIF_ALLMULTI)
1662                 data->rx_filter |= FIF_ALLMULTI;
1663
1664         *total_flags = data->rx_filter;
1665 }
1666
1667 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1668                                        struct ieee80211_vif *vif)
1669 {
1670         unsigned int *count = data;
1671         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1672
1673         if (vp->bcn_en)
1674                 (*count)++;
1675 }
1676
1677 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1678                                             struct ieee80211_vif *vif,
1679                                             struct ieee80211_bss_conf *info,
1680                                             u32 changed)
1681 {
1682         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1683         struct mac80211_hwsim_data *data = hw->priv;
1684
1685         hwsim_check_magic(vif);
1686
1687         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1688                     __func__, changed, vif->addr);
1689
1690         if (changed & BSS_CHANGED_BSSID) {
1691                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1692                             __func__, info->bssid);
1693                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1694         }
1695
1696         if (changed & BSS_CHANGED_ASSOC) {
1697                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1698                             info->assoc, info->aid);
1699                 vp->assoc = info->assoc;
1700                 vp->aid = info->aid;
1701         }
1702
1703         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1704                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1705                             info->enable_beacon, info->beacon_int);
1706                 vp->bcn_en = info->enable_beacon;
1707                 if (data->started &&
1708                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1709                     info->enable_beacon) {
1710                         u64 tsf, until_tbtt;
1711                         u32 bcn_int;
1712                         data->beacon_int = info->beacon_int * 1024;
1713                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1714                         bcn_int = data->beacon_int;
1715                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1716                         tasklet_hrtimer_start(&data->beacon_timer,
1717                                               ns_to_ktime(until_tbtt * 1000),
1718                                               HRTIMER_MODE_REL);
1719                 } else if (!info->enable_beacon) {
1720                         unsigned int count = 0;
1721                         ieee80211_iterate_active_interfaces_atomic(
1722                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1723                                 mac80211_hwsim_bcn_en_iter, &count);
1724                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1725                                     count);
1726                         if (count == 0) {
1727                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1728                                 data->beacon_int = 0;
1729                         }
1730                 }
1731         }
1732
1733         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1734                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1735                             info->use_cts_prot);
1736         }
1737
1738         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1739                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1740                             info->use_short_preamble);
1741         }
1742
1743         if (changed & BSS_CHANGED_ERP_SLOT) {
1744                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1745         }
1746
1747         if (changed & BSS_CHANGED_HT) {
1748                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1749                             info->ht_operation_mode);
1750         }
1751
1752         if (changed & BSS_CHANGED_BASIC_RATES) {
1753                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1754                             (unsigned long long) info->basic_rates);
1755         }
1756
1757         if (changed & BSS_CHANGED_TXPOWER)
1758                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1759 }
1760
1761 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1762                                   struct ieee80211_vif *vif,
1763                                   struct ieee80211_sta *sta)
1764 {
1765         hwsim_check_magic(vif);
1766         hwsim_set_sta_magic(sta);
1767
1768         return 0;
1769 }
1770
1771 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1772                                      struct ieee80211_vif *vif,
1773                                      struct ieee80211_sta *sta)
1774 {
1775         hwsim_check_magic(vif);
1776         hwsim_clear_sta_magic(sta);
1777
1778         return 0;
1779 }
1780
1781 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1782                                       struct ieee80211_vif *vif,
1783                                       enum sta_notify_cmd cmd,
1784                                       struct ieee80211_sta *sta)
1785 {
1786         hwsim_check_magic(vif);
1787
1788         switch (cmd) {
1789         case STA_NOTIFY_SLEEP:
1790         case STA_NOTIFY_AWAKE:
1791                 /* TODO: make good use of these flags */
1792                 break;
1793         default:
1794                 WARN(1, "Invalid sta notify: %d\n", cmd);
1795                 break;
1796         }
1797 }
1798
1799 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1800                                   struct ieee80211_sta *sta,
1801                                   bool set)
1802 {
1803         hwsim_check_sta_magic(sta);
1804         return 0;
1805 }
1806
1807 static int mac80211_hwsim_conf_tx(
1808         struct ieee80211_hw *hw,
1809         struct ieee80211_vif *vif, u16 queue,
1810         const struct ieee80211_tx_queue_params *params)
1811 {
1812         wiphy_debug(hw->wiphy,
1813                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1814                     __func__, queue,
1815                     params->txop, params->cw_min,
1816                     params->cw_max, params->aifs);
1817         return 0;
1818 }
1819
1820 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1821                                      struct survey_info *survey)
1822 {
1823         struct mac80211_hwsim_data *hwsim = hw->priv;
1824
1825         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1826                 return -ENOENT;
1827
1828         mutex_lock(&hwsim->mutex);
1829         survey->channel = hwsim->survey_data[idx].channel;
1830         if (!survey->channel) {
1831                 mutex_unlock(&hwsim->mutex);
1832                 return -ENOENT;
1833         }
1834
1835         /*
1836          * Magically conjured dummy values --- this is only ok for simulated hardware.
1837          *
1838          * A real driver which cannot determine real values noise MUST NOT
1839          * report any, especially not a magically conjured ones :-)
1840          */
1841         survey->filled = SURVEY_INFO_NOISE_DBM |
1842                          SURVEY_INFO_TIME |
1843                          SURVEY_INFO_TIME_BUSY;
1844         survey->noise = -92;
1845         survey->time =
1846                 jiffies_to_msecs(hwsim->survey_data[idx].end -
1847                                  hwsim->survey_data[idx].start);
1848         /* report 12.5% of channel time is used */
1849         survey->time_busy = survey->time/8;
1850         mutex_unlock(&hwsim->mutex);
1851
1852         return 0;
1853 }
1854
1855 #ifdef CONFIG_NL80211_TESTMODE
1856 /*
1857  * This section contains example code for using netlink
1858  * attributes with the testmode command in nl80211.
1859  */
1860
1861 /* These enums need to be kept in sync with userspace */
1862 enum hwsim_testmode_attr {
1863         __HWSIM_TM_ATTR_INVALID = 0,
1864         HWSIM_TM_ATTR_CMD       = 1,
1865         HWSIM_TM_ATTR_PS        = 2,
1866
1867         /* keep last */
1868         __HWSIM_TM_ATTR_AFTER_LAST,
1869         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1870 };
1871
1872 enum hwsim_testmode_cmd {
1873         HWSIM_TM_CMD_SET_PS             = 0,
1874         HWSIM_TM_CMD_GET_PS             = 1,
1875         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1876         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1877 };
1878
1879 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1880         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1881         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1882 };
1883
1884 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1885                                        struct ieee80211_vif *vif,
1886                                        void *data, int len)
1887 {
1888         struct mac80211_hwsim_data *hwsim = hw->priv;
1889         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1890         struct sk_buff *skb;
1891         int err, ps;
1892
1893         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1894                         hwsim_testmode_policy, NULL);
1895         if (err)
1896                 return err;
1897
1898         if (!tb[HWSIM_TM_ATTR_CMD])
1899                 return -EINVAL;
1900
1901         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1902         case HWSIM_TM_CMD_SET_PS:
1903                 if (!tb[HWSIM_TM_ATTR_PS])
1904                         return -EINVAL;
1905                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1906                 return hwsim_fops_ps_write(hwsim, ps);
1907         case HWSIM_TM_CMD_GET_PS:
1908                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1909                                                 nla_total_size(sizeof(u32)));
1910                 if (!skb)
1911                         return -ENOMEM;
1912                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1913                         goto nla_put_failure;
1914                 return cfg80211_testmode_reply(skb);
1915         case HWSIM_TM_CMD_STOP_QUEUES:
1916                 ieee80211_stop_queues(hw);
1917                 return 0;
1918         case HWSIM_TM_CMD_WAKE_QUEUES:
1919                 ieee80211_wake_queues(hw);
1920                 return 0;
1921         default:
1922                 return -EOPNOTSUPP;
1923         }
1924
1925  nla_put_failure:
1926         kfree_skb(skb);
1927         return -ENOBUFS;
1928 }
1929 #endif
1930
1931 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1932                                        struct ieee80211_vif *vif,
1933                                        struct ieee80211_ampdu_params *params)
1934 {
1935         struct ieee80211_sta *sta = params->sta;
1936         enum ieee80211_ampdu_mlme_action action = params->action;
1937         u16 tid = params->tid;
1938
1939         switch (action) {
1940         case IEEE80211_AMPDU_TX_START:
1941                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1942                 break;
1943         case IEEE80211_AMPDU_TX_STOP_CONT:
1944         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1945         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1946                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1947                 break;
1948         case IEEE80211_AMPDU_TX_OPERATIONAL:
1949                 break;
1950         case IEEE80211_AMPDU_RX_START:
1951         case IEEE80211_AMPDU_RX_STOP:
1952                 break;
1953         default:
1954                 return -EOPNOTSUPP;
1955         }
1956
1957         return 0;
1958 }
1959
1960 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1961                                  struct ieee80211_vif *vif,
1962                                  u32 queues, bool drop)
1963 {
1964         /* Not implemented, queues only on kernel side */
1965 }
1966
1967 static void hw_scan_work(struct work_struct *work)
1968 {
1969         struct mac80211_hwsim_data *hwsim =
1970                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1971         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1972         int dwell, i;
1973
1974         mutex_lock(&hwsim->mutex);
1975         if (hwsim->scan_chan_idx >= req->n_channels) {
1976                 struct cfg80211_scan_info info = {
1977                         .aborted = false,
1978                 };
1979
1980                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1981                 ieee80211_scan_completed(hwsim->hw, &info);
1982                 hwsim->hw_scan_request = NULL;
1983                 hwsim->hw_scan_vif = NULL;
1984                 hwsim->tmp_chan = NULL;
1985                 mutex_unlock(&hwsim->mutex);
1986                 return;
1987         }
1988
1989         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1990                     req->channels[hwsim->scan_chan_idx]->center_freq);
1991
1992         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1993         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1994                                       IEEE80211_CHAN_RADAR) ||
1995             !req->n_ssids) {
1996                 dwell = 120;
1997         } else {
1998                 dwell = 30;
1999                 /* send probes */
2000                 for (i = 0; i < req->n_ssids; i++) {
2001                         struct sk_buff *probe;
2002                         struct ieee80211_mgmt *mgmt;
2003
2004                         probe = ieee80211_probereq_get(hwsim->hw,
2005                                                        hwsim->scan_addr,
2006                                                        req->ssids[i].ssid,
2007                                                        req->ssids[i].ssid_len,
2008                                                        req->ie_len);
2009                         if (!probe)
2010                                 continue;
2011
2012                         mgmt = (struct ieee80211_mgmt *) probe->data;
2013                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2014                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2015
2016                         if (req->ie_len)
2017                                 memcpy(skb_put(probe, req->ie_len), req->ie,
2018                                        req->ie_len);
2019
2020                         local_bh_disable();
2021                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2022                                                 hwsim->tmp_chan);
2023                         local_bh_enable();
2024                 }
2025         }
2026         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2027                                      msecs_to_jiffies(dwell));
2028         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2029         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2030         hwsim->survey_data[hwsim->scan_chan_idx].end =
2031                 jiffies + msecs_to_jiffies(dwell);
2032         hwsim->scan_chan_idx++;
2033         mutex_unlock(&hwsim->mutex);
2034 }
2035
2036 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2037                                   struct ieee80211_vif *vif,
2038                                   struct ieee80211_scan_request *hw_req)
2039 {
2040         struct mac80211_hwsim_data *hwsim = hw->priv;
2041         struct cfg80211_scan_request *req = &hw_req->req;
2042
2043         mutex_lock(&hwsim->mutex);
2044         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2045                 mutex_unlock(&hwsim->mutex);
2046                 return -EBUSY;
2047         }
2048         hwsim->hw_scan_request = req;
2049         hwsim->hw_scan_vif = vif;
2050         hwsim->scan_chan_idx = 0;
2051         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2052                 get_random_mask_addr(hwsim->scan_addr,
2053                                      hw_req->req.mac_addr,
2054                                      hw_req->req.mac_addr_mask);
2055         else
2056                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2057         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2058         mutex_unlock(&hwsim->mutex);
2059
2060         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2061
2062         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2063
2064         return 0;
2065 }
2066
2067 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2068                                           struct ieee80211_vif *vif)
2069 {
2070         struct mac80211_hwsim_data *hwsim = hw->priv;
2071         struct cfg80211_scan_info info = {
2072                 .aborted = true,
2073         };
2074
2075         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2076
2077         cancel_delayed_work_sync(&hwsim->hw_scan);
2078
2079         mutex_lock(&hwsim->mutex);
2080         ieee80211_scan_completed(hwsim->hw, &info);
2081         hwsim->tmp_chan = NULL;
2082         hwsim->hw_scan_request = NULL;
2083         hwsim->hw_scan_vif = NULL;
2084         mutex_unlock(&hwsim->mutex);
2085 }
2086
2087 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2088                                    struct ieee80211_vif *vif,
2089                                    const u8 *mac_addr)
2090 {
2091         struct mac80211_hwsim_data *hwsim = hw->priv;
2092
2093         mutex_lock(&hwsim->mutex);
2094
2095         if (hwsim->scanning) {
2096                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2097                 goto out;
2098         }
2099
2100         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2101
2102         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2103         hwsim->scanning = true;
2104         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2105
2106 out:
2107         mutex_unlock(&hwsim->mutex);
2108 }
2109
2110 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2111                                             struct ieee80211_vif *vif)
2112 {
2113         struct mac80211_hwsim_data *hwsim = hw->priv;
2114
2115         mutex_lock(&hwsim->mutex);
2116
2117         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2118         hwsim->scanning = false;
2119         eth_zero_addr(hwsim->scan_addr);
2120
2121         mutex_unlock(&hwsim->mutex);
2122 }
2123
2124 static void hw_roc_start(struct work_struct *work)
2125 {
2126         struct mac80211_hwsim_data *hwsim =
2127                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2128
2129         mutex_lock(&hwsim->mutex);
2130
2131         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2132         hwsim->tmp_chan = hwsim->roc_chan;
2133         ieee80211_ready_on_channel(hwsim->hw);
2134
2135         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2136                                      msecs_to_jiffies(hwsim->roc_duration));
2137
2138         mutex_unlock(&hwsim->mutex);
2139 }
2140
2141 static void hw_roc_done(struct work_struct *work)
2142 {
2143         struct mac80211_hwsim_data *hwsim =
2144                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2145
2146         mutex_lock(&hwsim->mutex);
2147         ieee80211_remain_on_channel_expired(hwsim->hw);
2148         hwsim->tmp_chan = NULL;
2149         mutex_unlock(&hwsim->mutex);
2150
2151         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2152 }
2153
2154 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2155                               struct ieee80211_vif *vif,
2156                               struct ieee80211_channel *chan,
2157                               int duration,
2158                               enum ieee80211_roc_type type)
2159 {
2160         struct mac80211_hwsim_data *hwsim = hw->priv;
2161
2162         mutex_lock(&hwsim->mutex);
2163         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2164                 mutex_unlock(&hwsim->mutex);
2165                 return -EBUSY;
2166         }
2167
2168         hwsim->roc_chan = chan;
2169         hwsim->roc_duration = duration;
2170         mutex_unlock(&hwsim->mutex);
2171
2172         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2173                     chan->center_freq, duration);
2174         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2175
2176         return 0;
2177 }
2178
2179 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2180 {
2181         struct mac80211_hwsim_data *hwsim = hw->priv;
2182
2183         cancel_delayed_work_sync(&hwsim->roc_start);
2184         cancel_delayed_work_sync(&hwsim->roc_done);
2185
2186         mutex_lock(&hwsim->mutex);
2187         hwsim->tmp_chan = NULL;
2188         mutex_unlock(&hwsim->mutex);
2189
2190         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2191
2192         return 0;
2193 }
2194
2195 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2196                                       struct ieee80211_chanctx_conf *ctx)
2197 {
2198         hwsim_set_chanctx_magic(ctx);
2199         wiphy_debug(hw->wiphy,
2200                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2201                     ctx->def.chan->center_freq, ctx->def.width,
2202                     ctx->def.center_freq1, ctx->def.center_freq2);
2203         return 0;
2204 }
2205
2206 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2207                                           struct ieee80211_chanctx_conf *ctx)
2208 {
2209         wiphy_debug(hw->wiphy,
2210                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2211                     ctx->def.chan->center_freq, ctx->def.width,
2212                     ctx->def.center_freq1, ctx->def.center_freq2);
2213         hwsim_check_chanctx_magic(ctx);
2214         hwsim_clear_chanctx_magic(ctx);
2215 }
2216
2217 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2218                                           struct ieee80211_chanctx_conf *ctx,
2219                                           u32 changed)
2220 {
2221         hwsim_check_chanctx_magic(ctx);
2222         wiphy_debug(hw->wiphy,
2223                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2224                     ctx->def.chan->center_freq, ctx->def.width,
2225                     ctx->def.center_freq1, ctx->def.center_freq2);
2226 }
2227
2228 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2229                                              struct ieee80211_vif *vif,
2230                                              struct ieee80211_chanctx_conf *ctx)
2231 {
2232         hwsim_check_magic(vif);
2233         hwsim_check_chanctx_magic(ctx);
2234
2235         return 0;
2236 }
2237
2238 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2239                                                 struct ieee80211_vif *vif,
2240                                                 struct ieee80211_chanctx_conf *ctx)
2241 {
2242         hwsim_check_magic(vif);
2243         hwsim_check_chanctx_magic(ctx);
2244 }
2245
2246 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2247         "tx_pkts_nic",
2248         "tx_bytes_nic",
2249         "rx_pkts_nic",
2250         "rx_bytes_nic",
2251         "d_tx_dropped",
2252         "d_tx_failed",
2253         "d_ps_mode",
2254         "d_group",
2255 };
2256
2257 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2258
2259 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2260                                           struct ieee80211_vif *vif,
2261                                           u32 sset, u8 *data)
2262 {
2263         if (sset == ETH_SS_STATS)
2264                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2265                        sizeof(mac80211_hwsim_gstrings_stats));
2266 }
2267
2268 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2269                                             struct ieee80211_vif *vif, int sset)
2270 {
2271         if (sset == ETH_SS_STATS)
2272                 return MAC80211_HWSIM_SSTATS_LEN;
2273         return 0;
2274 }
2275
2276 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2277                                         struct ieee80211_vif *vif,
2278                                         struct ethtool_stats *stats, u64 *data)
2279 {
2280         struct mac80211_hwsim_data *ar = hw->priv;
2281         int i = 0;
2282
2283         data[i++] = ar->tx_pkts;
2284         data[i++] = ar->tx_bytes;
2285         data[i++] = ar->rx_pkts;
2286         data[i++] = ar->rx_bytes;
2287         data[i++] = ar->tx_dropped;
2288         data[i++] = ar->tx_failed;
2289         data[i++] = ar->ps;
2290         data[i++] = ar->group;
2291
2292         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2293 }
2294
2295 #define HWSIM_COMMON_OPS                                        \
2296         .tx = mac80211_hwsim_tx,                                \
2297         .start = mac80211_hwsim_start,                          \
2298         .stop = mac80211_hwsim_stop,                            \
2299         .add_interface = mac80211_hwsim_add_interface,          \
2300         .change_interface = mac80211_hwsim_change_interface,    \
2301         .remove_interface = mac80211_hwsim_remove_interface,    \
2302         .config = mac80211_hwsim_config,                        \
2303         .configure_filter = mac80211_hwsim_configure_filter,    \
2304         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2305         .sta_add = mac80211_hwsim_sta_add,                      \
2306         .sta_remove = mac80211_hwsim_sta_remove,                \
2307         .sta_notify = mac80211_hwsim_sta_notify,                \
2308         .set_tim = mac80211_hwsim_set_tim,                      \
2309         .conf_tx = mac80211_hwsim_conf_tx,                      \
2310         .get_survey = mac80211_hwsim_get_survey,                \
2311         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2312         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2313         .flush = mac80211_hwsim_flush,                          \
2314         .get_tsf = mac80211_hwsim_get_tsf,                      \
2315         .set_tsf = mac80211_hwsim_set_tsf,                      \
2316         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2317         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2318         .get_et_strings = mac80211_hwsim_get_et_strings,
2319
2320 static const struct ieee80211_ops mac80211_hwsim_ops = {
2321         HWSIM_COMMON_OPS
2322         .sw_scan_start = mac80211_hwsim_sw_scan,
2323         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2324 };
2325
2326 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2327         HWSIM_COMMON_OPS
2328         .hw_scan = mac80211_hwsim_hw_scan,
2329         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2330         .sw_scan_start = NULL,
2331         .sw_scan_complete = NULL,
2332         .remain_on_channel = mac80211_hwsim_roc,
2333         .cancel_remain_on_channel = mac80211_hwsim_croc,
2334         .add_chanctx = mac80211_hwsim_add_chanctx,
2335         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2336         .change_chanctx = mac80211_hwsim_change_chanctx,
2337         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2338         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2339 };
2340
2341 struct hwsim_new_radio_params {
2342         unsigned int channels;
2343         const char *reg_alpha2;
2344         const struct ieee80211_regdomain *regd;
2345         bool reg_strict;
2346         bool p2p_device;
2347         bool use_chanctx;
2348         bool destroy_on_close;
2349         const char *hwname;
2350         bool no_vif;
2351 };
2352
2353 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2354                                    struct genl_info *info)
2355 {
2356         if (info)
2357                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2358                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2359         else
2360                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2361                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2362 }
2363
2364 static int append_radio_msg(struct sk_buff *skb, int id,
2365                             struct hwsim_new_radio_params *param)
2366 {
2367         int ret;
2368
2369         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2370         if (ret < 0)
2371                 return ret;
2372
2373         if (param->channels) {
2374                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2375                 if (ret < 0)
2376                         return ret;
2377         }
2378
2379         if (param->reg_alpha2) {
2380                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2381                               param->reg_alpha2);
2382                 if (ret < 0)
2383                         return ret;
2384         }
2385
2386         if (param->regd) {
2387                 int i;
2388
2389                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2390                         if (hwsim_world_regdom_custom[i] != param->regd)
2391                                 continue;
2392
2393                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2394                         if (ret < 0)
2395                                 return ret;
2396                         break;
2397                 }
2398         }
2399
2400         if (param->reg_strict) {
2401                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2402                 if (ret < 0)
2403                         return ret;
2404         }
2405
2406         if (param->p2p_device) {
2407                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2408                 if (ret < 0)
2409                         return ret;
2410         }
2411
2412         if (param->use_chanctx) {
2413                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2414                 if (ret < 0)
2415                         return ret;
2416         }
2417
2418         if (param->hwname) {
2419                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2420                               strlen(param->hwname), param->hwname);
2421                 if (ret < 0)
2422                         return ret;
2423         }
2424
2425         return 0;
2426 }
2427
2428 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2429                                   struct hwsim_new_radio_params *param)
2430 {
2431         struct sk_buff *mcast_skb;
2432         void *data;
2433
2434         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2435         if (!mcast_skb)
2436                 return;
2437
2438         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2439                            HWSIM_CMD_NEW_RADIO);
2440         if (!data)
2441                 goto out_err;
2442
2443         if (append_radio_msg(mcast_skb, id, param) < 0)
2444                 goto out_err;
2445
2446         genlmsg_end(mcast_skb, data);
2447
2448         hwsim_mcast_config_msg(mcast_skb, info);
2449         return;
2450
2451 out_err:
2452         genlmsg_cancel(mcast_skb, data);
2453         nlmsg_free(mcast_skb);
2454 }
2455
2456 static int mac80211_hwsim_new_radio(struct genl_info *info,
2457                                     struct hwsim_new_radio_params *param)
2458 {
2459         int err;
2460         u8 addr[ETH_ALEN];
2461         struct mac80211_hwsim_data *data;
2462         struct ieee80211_hw *hw;
2463         enum nl80211_band band;
2464         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2465         struct net *net;
2466         int idx;
2467
2468         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2469                 return -EINVAL;
2470
2471         spin_lock_bh(&hwsim_radio_lock);
2472         idx = hwsim_radio_idx++;
2473         spin_unlock_bh(&hwsim_radio_lock);
2474
2475         if (param->use_chanctx)
2476                 ops = &mac80211_hwsim_mchan_ops;
2477         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2478         if (!hw) {
2479                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2480                 err = -ENOMEM;
2481                 goto failed;
2482         }
2483
2484         /* ieee80211_alloc_hw_nm may have used a default name */
2485         param->hwname = wiphy_name(hw->wiphy);
2486
2487         if (info)
2488                 net = genl_info_net(info);
2489         else
2490                 net = &init_net;
2491         wiphy_net_set(hw->wiphy, net);
2492
2493         data = hw->priv;
2494         data->hw = hw;
2495
2496         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2497         if (IS_ERR(data->dev)) {
2498                 printk(KERN_DEBUG
2499                        "mac80211_hwsim: device_create failed (%ld)\n",
2500                        PTR_ERR(data->dev));
2501                 err = -ENOMEM;
2502                 goto failed_drvdata;
2503         }
2504         data->dev->driver = &mac80211_hwsim_driver.driver;
2505         err = device_bind_driver(data->dev);
2506         if (err != 0) {
2507                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2508                        err);
2509                 goto failed_bind;
2510         }
2511
2512         skb_queue_head_init(&data->pending);
2513
2514         SET_IEEE80211_DEV(hw, data->dev);
2515         eth_zero_addr(addr);
2516         addr[0] = 0x02;
2517         addr[3] = idx >> 8;
2518         addr[4] = idx;
2519         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2520         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2521         data->addresses[1].addr[0] |= 0x40;
2522         hw->wiphy->n_addresses = 2;
2523         hw->wiphy->addresses = data->addresses;
2524
2525         data->channels = param->channels;
2526         data->use_chanctx = param->use_chanctx;
2527         data->idx = idx;
2528         data->destroy_on_close = param->destroy_on_close;
2529         if (info)
2530                 data->portid = info->snd_portid;
2531
2532         if (data->use_chanctx) {
2533                 hw->wiphy->max_scan_ssids = 255;
2534                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2535                 hw->wiphy->max_remain_on_channel_duration = 1000;
2536                 hw->wiphy->iface_combinations = &data->if_combination;
2537                 if (param->p2p_device)
2538                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2539                 else
2540                         data->if_combination = hwsim_if_comb[0];
2541                 hw->wiphy->n_iface_combinations = 1;
2542                 /* For channels > 1 DFS is not allowed */
2543                 data->if_combination.radar_detect_widths = 0;
2544                 data->if_combination.num_different_channels = data->channels;
2545         } else if (param->p2p_device) {
2546                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2547                 hw->wiphy->n_iface_combinations =
2548                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2549         } else {
2550                 hw->wiphy->iface_combinations = hwsim_if_comb;
2551                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2552         }
2553
2554         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2555         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2556         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2557
2558         hw->queues = 5;
2559         hw->offchannel_tx_hw_queue = 4;
2560         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2561                                      BIT(NL80211_IFTYPE_AP) |
2562                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2563                                      BIT(NL80211_IFTYPE_P2P_GO) |
2564                                      BIT(NL80211_IFTYPE_ADHOC) |
2565                                      BIT(NL80211_IFTYPE_MESH_POINT);
2566
2567         if (param->p2p_device)
2568                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2569
2570         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2571         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2572         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2573         ieee80211_hw_set(hw, QUEUE_CONTROL);
2574         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2575         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2576         ieee80211_hw_set(hw, MFP_CAPABLE);
2577         ieee80211_hw_set(hw, SIGNAL_DBM);
2578         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2579         if (rctbl)
2580                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2581
2582         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2583                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2584                             WIPHY_FLAG_AP_UAPSD |
2585                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2586         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2587                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2588                                NL80211_FEATURE_STATIC_SMPS |
2589                                NL80211_FEATURE_DYNAMIC_SMPS |
2590                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2591         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2592
2593         /* ask mac80211 to reserve space for magic */
2594         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2595         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2596         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2597
2598         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2599                 sizeof(hwsim_channels_2ghz));
2600         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2601                 sizeof(hwsim_channels_5ghz));
2602         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2603
2604         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2605                 struct ieee80211_supported_band *sband = &data->bands[band];
2606                 switch (band) {
2607                 case NL80211_BAND_2GHZ:
2608                         sband->channels = data->channels_2ghz;
2609                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2610                         sband->bitrates = data->rates;
2611                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2612                         break;
2613                 case NL80211_BAND_5GHZ:
2614                         sband->channels = data->channels_5ghz;
2615                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2616                         sband->bitrates = data->rates + 4;
2617                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2618
2619                         sband->vht_cap.vht_supported = true;
2620                         sband->vht_cap.cap =
2621                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2622                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2623                                 IEEE80211_VHT_CAP_RXLDPC |
2624                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2625                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2626                                 IEEE80211_VHT_CAP_TXSTBC |
2627                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2628                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2629                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2630                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2631                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2632                         sband->vht_cap.vht_mcs.rx_mcs_map =
2633                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2634                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2635                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2636                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2637                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2638                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2639                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2640                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2641                         sband->vht_cap.vht_mcs.tx_mcs_map =
2642                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2643                         break;
2644                 default:
2645                         continue;
2646                 }
2647
2648                 sband->ht_cap.ht_supported = true;
2649                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2650                                     IEEE80211_HT_CAP_GRN_FLD |
2651                                     IEEE80211_HT_CAP_SGI_20 |
2652                                     IEEE80211_HT_CAP_SGI_40 |
2653                                     IEEE80211_HT_CAP_DSSSCCK40;
2654                 sband->ht_cap.ampdu_factor = 0x3;
2655                 sband->ht_cap.ampdu_density = 0x6;
2656                 memset(&sband->ht_cap.mcs, 0,
2657                        sizeof(sband->ht_cap.mcs));
2658                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2659                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2660                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2661
2662                 hw->wiphy->bands[band] = sband;
2663         }
2664
2665         /* By default all radios belong to the first group */
2666         data->group = 1;
2667         mutex_init(&data->mutex);
2668
2669         data->netgroup = hwsim_net_get_netgroup(net);
2670
2671         /* Enable frame retransmissions for lossy channels */
2672         hw->max_rates = 4;
2673         hw->max_rate_tries = 11;
2674
2675         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2676         hw->wiphy->n_vendor_commands =
2677                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2678         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2679         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2680
2681         if (param->reg_strict)
2682                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2683         if (param->regd) {
2684                 data->regd = param->regd;
2685                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2686                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2687                 /* give the regulatory workqueue a chance to run */
2688                 schedule_timeout_interruptible(1);
2689         }
2690
2691         if (param->no_vif)
2692                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2693
2694         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2695
2696         err = ieee80211_register_hw(hw);
2697         if (err < 0) {
2698                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2699                        err);
2700                 goto failed_hw;
2701         }
2702
2703         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2704
2705         if (param->reg_alpha2) {
2706                 data->alpha2[0] = param->reg_alpha2[0];
2707                 data->alpha2[1] = param->reg_alpha2[1];
2708                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2709         }
2710
2711         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2712         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2713         debugfs_create_file("group", 0666, data->debugfs, data,
2714                             &hwsim_fops_group);
2715         if (!data->use_chanctx)
2716                 debugfs_create_file("dfs_simulate_radar", 0222,
2717                                     data->debugfs,
2718                                     data, &hwsim_simulate_radar);
2719
2720         tasklet_hrtimer_init(&data->beacon_timer,
2721                              mac80211_hwsim_beacon,
2722                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2723
2724         spin_lock_bh(&hwsim_radio_lock);
2725         list_add_tail(&data->list, &hwsim_radios);
2726         spin_unlock_bh(&hwsim_radio_lock);
2727
2728         if (idx > 0)
2729                 hwsim_mcast_new_radio(idx, info, param);
2730
2731         return idx;
2732
2733 failed_hw:
2734         device_release_driver(data->dev);
2735 failed_bind:
2736         device_unregister(data->dev);
2737 failed_drvdata:
2738         ieee80211_free_hw(hw);
2739 failed:
2740         return err;
2741 }
2742
2743 static void hwsim_mcast_del_radio(int id, const char *hwname,
2744                                   struct genl_info *info)
2745 {
2746         struct sk_buff *skb;
2747         void *data;
2748         int ret;
2749
2750         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2751         if (!skb)
2752                 return;
2753
2754         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2755                            HWSIM_CMD_DEL_RADIO);
2756         if (!data)
2757                 goto error;
2758
2759         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2760         if (ret < 0)
2761                 goto error;
2762
2763         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2764                       hwname);
2765         if (ret < 0)
2766                 goto error;
2767
2768         genlmsg_end(skb, data);
2769
2770         hwsim_mcast_config_msg(skb, info);
2771
2772         return;
2773
2774 error:
2775         nlmsg_free(skb);
2776 }
2777
2778 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2779                                      const char *hwname,
2780                                      struct genl_info *info)
2781 {
2782         hwsim_mcast_del_radio(data->idx, hwname, info);
2783         debugfs_remove_recursive(data->debugfs);
2784         ieee80211_unregister_hw(data->hw);
2785         device_release_driver(data->dev);
2786         device_unregister(data->dev);
2787         ieee80211_free_hw(data->hw);
2788 }
2789
2790 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2791                                     struct mac80211_hwsim_data *data,
2792                                     u32 portid, u32 seq,
2793                                     struct netlink_callback *cb, int flags)
2794 {
2795         void *hdr;
2796         struct hwsim_new_radio_params param = { };
2797         int res = -EMSGSIZE;
2798
2799         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2800                           HWSIM_CMD_GET_RADIO);
2801         if (!hdr)
2802                 return -EMSGSIZE;
2803
2804         if (cb)
2805                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2806
2807         if (data->alpha2[0] && data->alpha2[1])
2808                 param.reg_alpha2 = data->alpha2;
2809
2810         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2811                                         REGULATORY_STRICT_REG);
2812         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2813                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2814         param.use_chanctx = data->use_chanctx;
2815         param.regd = data->regd;
2816         param.channels = data->channels;
2817         param.hwname = wiphy_name(data->hw->wiphy);
2818
2819         res = append_radio_msg(skb, data->idx, &param);
2820         if (res < 0)
2821                 goto out_err;
2822
2823         genlmsg_end(skb, hdr);
2824         return 0;
2825
2826 out_err:
2827         genlmsg_cancel(skb, hdr);
2828         return res;
2829 }
2830
2831 static void mac80211_hwsim_free(void)
2832 {
2833         struct mac80211_hwsim_data *data;
2834
2835         spin_lock_bh(&hwsim_radio_lock);
2836         while ((data = list_first_entry_or_null(&hwsim_radios,
2837                                                 struct mac80211_hwsim_data,
2838                                                 list))) {
2839                 list_del(&data->list);
2840                 spin_unlock_bh(&hwsim_radio_lock);
2841                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2842                                          NULL);
2843                 spin_lock_bh(&hwsim_radio_lock);
2844         }
2845         spin_unlock_bh(&hwsim_radio_lock);
2846         class_destroy(hwsim_class);
2847 }
2848
2849 static const struct net_device_ops hwsim_netdev_ops = {
2850         .ndo_start_xmit         = hwsim_mon_xmit,
2851         .ndo_set_mac_address    = eth_mac_addr,
2852         .ndo_validate_addr      = eth_validate_addr,
2853 };
2854
2855 static void hwsim_mon_setup(struct net_device *dev)
2856 {
2857         dev->netdev_ops = &hwsim_netdev_ops;
2858         dev->destructor = free_netdev;
2859         ether_setup(dev);
2860         dev->priv_flags |= IFF_NO_QUEUE;
2861         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2862         eth_zero_addr(dev->dev_addr);
2863         dev->dev_addr[0] = 0x12;
2864 }
2865
2866 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2867 {
2868         struct mac80211_hwsim_data *data;
2869         bool _found = false;
2870
2871         spin_lock_bh(&hwsim_radio_lock);
2872         list_for_each_entry(data, &hwsim_radios, list) {
2873                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2874                         _found = true;
2875                         break;
2876                 }
2877         }
2878         spin_unlock_bh(&hwsim_radio_lock);
2879
2880         if (!_found)
2881                 return NULL;
2882
2883         return data;
2884 }
2885
2886 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2887 {
2888         struct mac80211_hwsim_data *data;
2889
2890         hwsim_net_set_wmediumd(net, portid);
2891
2892         spin_lock_bh(&hwsim_radio_lock);
2893         list_for_each_entry(data, &hwsim_radios, list) {
2894                 if (data->netgroup == hwsim_net_get_netgroup(net))
2895                         data->wmediumd = portid;
2896         }
2897         spin_unlock_bh(&hwsim_radio_lock);
2898 }
2899
2900 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2901                                            struct genl_info *info)
2902 {
2903
2904         struct ieee80211_hdr *hdr;
2905         struct mac80211_hwsim_data *data2;
2906         struct ieee80211_tx_info *txi;
2907         struct hwsim_tx_rate *tx_attempts;
2908         u64 ret_skb_cookie;
2909         struct sk_buff *skb, *tmp;
2910         const u8 *src;
2911         unsigned int hwsim_flags;
2912         int i;
2913         bool found = false;
2914
2915         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2916             !info->attrs[HWSIM_ATTR_FLAGS] ||
2917             !info->attrs[HWSIM_ATTR_COOKIE] ||
2918             !info->attrs[HWSIM_ATTR_SIGNAL] ||
2919             !info->attrs[HWSIM_ATTR_TX_INFO])
2920                 goto out;
2921
2922         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2923         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2924         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2925
2926         data2 = get_hwsim_data_ref_from_addr(src);
2927         if (!data2)
2928                 goto out;
2929
2930         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2931                 goto out;
2932
2933         if (info->snd_portid != data2->wmediumd)
2934                 goto out;
2935
2936         /* look for the skb matching the cookie passed back from user */
2937         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2938                 u64 skb_cookie;
2939
2940                 txi = IEEE80211_SKB_CB(skb);
2941                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2942
2943                 if (skb_cookie == ret_skb_cookie) {
2944                         skb_unlink(skb, &data2->pending);
2945                         found = true;
2946                         break;
2947                 }
2948         }
2949
2950         /* not found */
2951         if (!found)
2952                 goto out;
2953
2954         /* Tx info received because the frame was broadcasted on user space,
2955          so we get all the necessary info: tx attempts and skb control buff */
2956
2957         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2958                        info->attrs[HWSIM_ATTR_TX_INFO]);
2959
2960         /* now send back TX status */
2961         txi = IEEE80211_SKB_CB(skb);
2962
2963         ieee80211_tx_info_clear_status(txi);
2964
2965         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2966                 txi->status.rates[i].idx = tx_attempts[i].idx;
2967                 txi->status.rates[i].count = tx_attempts[i].count;
2968                 /*txi->status.rates[i].flags = 0;*/
2969         }
2970
2971         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2972
2973         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2974            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2975                 if (skb->len >= 16) {
2976                         hdr = (struct ieee80211_hdr *) skb->data;
2977                         mac80211_hwsim_monitor_ack(data2->channel,
2978                                                    hdr->addr2);
2979                 }
2980                 txi->flags |= IEEE80211_TX_STAT_ACK;
2981         }
2982         ieee80211_tx_status_irqsafe(data2->hw, skb);
2983         return 0;
2984 out:
2985         return -EINVAL;
2986
2987 }
2988
2989 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2990                                           struct genl_info *info)
2991 {
2992         struct mac80211_hwsim_data *data2;
2993         struct ieee80211_rx_status rx_status;
2994         const u8 *dst;
2995         int frame_data_len;
2996         void *frame_data;
2997         struct sk_buff *skb = NULL;
2998
2999         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3000             !info->attrs[HWSIM_ATTR_FRAME] ||
3001             !info->attrs[HWSIM_ATTR_RX_RATE] ||
3002             !info->attrs[HWSIM_ATTR_SIGNAL])
3003                 goto out;
3004
3005         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3006         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3007         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3008
3009         /* Allocate new skb here */
3010         skb = alloc_skb(frame_data_len, GFP_KERNEL);
3011         if (skb == NULL)
3012                 goto err;
3013
3014         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3015                 goto err;
3016
3017         /* Copy the data */
3018         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
3019
3020         data2 = get_hwsim_data_ref_from_addr(dst);
3021         if (!data2)
3022                 goto out;
3023
3024         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3025                 goto out;
3026
3027         if (info->snd_portid != data2->wmediumd)
3028                 goto out;
3029
3030         /* check if radio is configured properly */
3031
3032         if (data2->idle || !data2->started)
3033                 goto out;
3034
3035         /* A frame is received from user space */
3036         memset(&rx_status, 0, sizeof(rx_status));
3037         if (info->attrs[HWSIM_ATTR_FREQ]) {
3038                 /* throw away off-channel packets, but allow both the temporary
3039                  * ("hw" scan/remain-on-channel) and regular channel, since the
3040                  * internal datapath also allows this
3041                  */
3042                 mutex_lock(&data2->mutex);
3043                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3044
3045                 if (rx_status.freq != data2->channel->center_freq &&
3046                     (!data2->tmp_chan ||
3047                      rx_status.freq != data2->tmp_chan->center_freq)) {
3048                         mutex_unlock(&data2->mutex);
3049                         goto out;
3050                 }
3051                 mutex_unlock(&data2->mutex);
3052         } else {
3053                 rx_status.freq = data2->channel->center_freq;
3054         }
3055
3056         rx_status.band = data2->channel->band;
3057         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3058         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3059
3060         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3061         data2->rx_pkts++;
3062         data2->rx_bytes += skb->len;
3063         ieee80211_rx_irqsafe(data2->hw, skb);
3064
3065         return 0;
3066 err:
3067         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3068 out:
3069         dev_kfree_skb(skb);
3070         return -EINVAL;
3071 }
3072
3073 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3074                                       struct genl_info *info)
3075 {
3076         struct net *net = genl_info_net(info);
3077         struct mac80211_hwsim_data *data;
3078         int chans = 1;
3079
3080         spin_lock_bh(&hwsim_radio_lock);
3081         list_for_each_entry(data, &hwsim_radios, list)
3082                 chans = max(chans, data->channels);
3083         spin_unlock_bh(&hwsim_radio_lock);
3084
3085         /* In the future we should revise the userspace API and allow it
3086          * to set a flag that it does support multi-channel, then we can
3087          * let this pass conditionally on the flag.
3088          * For current userspace, prohibit it since it won't work right.
3089          */
3090         if (chans > 1)
3091                 return -EOPNOTSUPP;
3092
3093         if (hwsim_net_get_wmediumd(net))
3094                 return -EBUSY;
3095
3096         hwsim_register_wmediumd(net, info->snd_portid);
3097
3098         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3099                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3100
3101         return 0;
3102 }
3103
3104 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3105 {
3106         struct hwsim_new_radio_params param = { 0 };
3107         const char *hwname = NULL;
3108
3109         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3110         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3111         param.channels = channels;
3112         param.destroy_on_close =
3113                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3114
3115         if (info->attrs[HWSIM_ATTR_CHANNELS])
3116                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3117
3118         if (info->attrs[HWSIM_ATTR_NO_VIF])
3119                 param.no_vif = true;
3120
3121         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3122                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3123                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3124                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3125                 if (!hwname)
3126                         return -ENOMEM;
3127                 param.hwname = hwname;
3128         }
3129
3130         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3131                 param.use_chanctx = true;
3132         else
3133                 param.use_chanctx = (param.channels > 1);
3134
3135         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3136                 param.reg_alpha2 =
3137                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3138
3139         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3140                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3141
3142                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3143                         return -EINVAL;
3144                 param.regd = hwsim_world_regdom_custom[idx];
3145         }
3146
3147         return mac80211_hwsim_new_radio(info, &param);
3148 }
3149
3150 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3151 {
3152         struct mac80211_hwsim_data *data;
3153         s64 idx = -1;
3154         const char *hwname = NULL;
3155
3156         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3157                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3158         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3159                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3160                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3161                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3162                 if (!hwname)
3163                         return -ENOMEM;
3164         } else
3165                 return -EINVAL;
3166
3167         spin_lock_bh(&hwsim_radio_lock);
3168         list_for_each_entry(data, &hwsim_radios, list) {
3169                 if (idx >= 0) {
3170                         if (data->idx != idx)
3171                                 continue;
3172                 } else {
3173                         if (!hwname ||
3174                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3175                                 continue;
3176                 }
3177
3178                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3179                         continue;
3180
3181                 list_del(&data->list);
3182                 spin_unlock_bh(&hwsim_radio_lock);
3183                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3184                                          info);
3185                 kfree(hwname);
3186                 return 0;
3187         }
3188         spin_unlock_bh(&hwsim_radio_lock);
3189
3190         kfree(hwname);
3191         return -ENODEV;
3192 }
3193
3194 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3195 {
3196         struct mac80211_hwsim_data *data;
3197         struct sk_buff *skb;
3198         int idx, res = -ENODEV;
3199
3200         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3201                 return -EINVAL;
3202         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3203
3204         spin_lock_bh(&hwsim_radio_lock);
3205         list_for_each_entry(data, &hwsim_radios, list) {
3206                 if (data->idx != idx)
3207                         continue;
3208
3209                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3210                         continue;
3211
3212                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3213                 if (!skb) {
3214                         res = -ENOMEM;
3215                         goto out_err;
3216                 }
3217
3218                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3219                                                info->snd_seq, NULL, 0);
3220                 if (res < 0) {
3221                         nlmsg_free(skb);
3222                         goto out_err;
3223                 }
3224
3225                 genlmsg_reply(skb, info);
3226                 break;
3227         }
3228
3229 out_err:
3230         spin_unlock_bh(&hwsim_radio_lock);
3231
3232         return res;
3233 }
3234
3235 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3236                                struct netlink_callback *cb)
3237 {
3238         int idx = cb->args[0];
3239         struct mac80211_hwsim_data *data = NULL;
3240         int res;
3241
3242         spin_lock_bh(&hwsim_radio_lock);
3243
3244         if (idx == hwsim_radio_idx)
3245                 goto done;
3246
3247         list_for_each_entry(data, &hwsim_radios, list) {
3248                 if (data->idx < idx)
3249                         continue;
3250
3251                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3252                         continue;
3253
3254                 res = mac80211_hwsim_get_radio(skb, data,
3255                                                NETLINK_CB(cb->skb).portid,
3256                                                cb->nlh->nlmsg_seq, cb,
3257                                                NLM_F_MULTI);
3258                 if (res < 0)
3259                         break;
3260
3261                 idx = data->idx + 1;
3262         }
3263
3264         cb->args[0] = idx;
3265
3266 done:
3267         spin_unlock_bh(&hwsim_radio_lock);
3268         return skb->len;
3269 }
3270
3271 /* Generic Netlink operations array */
3272 static const struct genl_ops hwsim_ops[] = {
3273         {
3274                 .cmd = HWSIM_CMD_REGISTER,
3275                 .policy = hwsim_genl_policy,
3276                 .doit = hwsim_register_received_nl,
3277                 .flags = GENL_UNS_ADMIN_PERM,
3278         },
3279         {
3280                 .cmd = HWSIM_CMD_FRAME,
3281                 .policy = hwsim_genl_policy,
3282                 .doit = hwsim_cloned_frame_received_nl,
3283         },
3284         {
3285                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3286                 .policy = hwsim_genl_policy,
3287                 .doit = hwsim_tx_info_frame_received_nl,
3288         },
3289         {
3290                 .cmd = HWSIM_CMD_NEW_RADIO,
3291                 .policy = hwsim_genl_policy,
3292                 .doit = hwsim_new_radio_nl,
3293                 .flags = GENL_UNS_ADMIN_PERM,
3294         },
3295         {
3296                 .cmd = HWSIM_CMD_DEL_RADIO,
3297                 .policy = hwsim_genl_policy,
3298                 .doit = hwsim_del_radio_nl,
3299                 .flags = GENL_UNS_ADMIN_PERM,
3300         },
3301         {
3302                 .cmd = HWSIM_CMD_GET_RADIO,
3303                 .policy = hwsim_genl_policy,
3304                 .doit = hwsim_get_radio_nl,
3305                 .dumpit = hwsim_dump_radio_nl,
3306         },
3307 };
3308
3309 static struct genl_family hwsim_genl_family __ro_after_init = {
3310         .name = "MAC80211_HWSIM",
3311         .version = 1,
3312         .maxattr = HWSIM_ATTR_MAX,
3313         .netnsok = true,
3314         .module = THIS_MODULE,
3315         .ops = hwsim_ops,
3316         .n_ops = ARRAY_SIZE(hwsim_ops),
3317         .mcgrps = hwsim_mcgrps,
3318         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3319 };
3320
3321 static void destroy_radio(struct work_struct *work)
3322 {
3323         struct mac80211_hwsim_data *data =
3324                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3325
3326         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3327 }
3328
3329 static void remove_user_radios(u32 portid)
3330 {
3331         struct mac80211_hwsim_data *entry, *tmp;
3332
3333         spin_lock_bh(&hwsim_radio_lock);
3334         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3335                 if (entry->destroy_on_close && entry->portid == portid) {
3336                         list_del(&entry->list);
3337                         INIT_WORK(&entry->destroy_work, destroy_radio);
3338                         schedule_work(&entry->destroy_work);
3339                 }
3340         }
3341         spin_unlock_bh(&hwsim_radio_lock);
3342 }
3343
3344 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3345                                          unsigned long state,
3346                                          void *_notify)
3347 {
3348         struct netlink_notify *notify = _notify;
3349
3350         if (state != NETLINK_URELEASE)
3351                 return NOTIFY_DONE;
3352
3353         remove_user_radios(notify->portid);
3354
3355         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3356                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3357                        " socket, switching to perfect channel medium\n");
3358                 hwsim_register_wmediumd(notify->net, 0);
3359         }
3360         return NOTIFY_DONE;
3361
3362 }
3363
3364 static struct notifier_block hwsim_netlink_notifier = {
3365         .notifier_call = mac80211_hwsim_netlink_notify,
3366 };
3367
3368 static int __init hwsim_init_netlink(void)
3369 {
3370         int rc;
3371
3372         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3373
3374         rc = genl_register_family(&hwsim_genl_family);
3375         if (rc)
3376                 goto failure;
3377
3378         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3379         if (rc) {
3380                 genl_unregister_family(&hwsim_genl_family);
3381                 goto failure;
3382         }
3383
3384         return 0;
3385
3386 failure:
3387         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3388         return -EINVAL;
3389 }
3390
3391 static __net_init int hwsim_init_net(struct net *net)
3392 {
3393         hwsim_net_set_netgroup(net);
3394
3395         return 0;
3396 }
3397
3398 static void __net_exit hwsim_exit_net(struct net *net)
3399 {
3400         struct mac80211_hwsim_data *data, *tmp;
3401
3402         spin_lock_bh(&hwsim_radio_lock);
3403         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3404                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3405                         continue;
3406
3407                 /* Radios created in init_net are returned to init_net. */
3408                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3409                         continue;
3410
3411                 list_del(&data->list);
3412                 INIT_WORK(&data->destroy_work, destroy_radio);
3413                 schedule_work(&data->destroy_work);
3414         }
3415         spin_unlock_bh(&hwsim_radio_lock);
3416 }
3417
3418 static struct pernet_operations hwsim_net_ops = {
3419         .init = hwsim_init_net,
3420         .exit = hwsim_exit_net,
3421         .id   = &hwsim_net_id,
3422         .size = sizeof(struct hwsim_net),
3423 };
3424
3425 static void hwsim_exit_netlink(void)
3426 {
3427         /* unregister the notifier */
3428         netlink_unregister_notifier(&hwsim_netlink_notifier);
3429         /* unregister the family */
3430         genl_unregister_family(&hwsim_genl_family);
3431 }
3432
3433 static int __init init_mac80211_hwsim(void)
3434 {
3435         int i, err;
3436
3437         if (radios < 0 || radios > 100)
3438                 return -EINVAL;
3439
3440         if (channels < 1)
3441                 return -EINVAL;
3442
3443         spin_lock_init(&hwsim_radio_lock);
3444
3445         err = register_pernet_device(&hwsim_net_ops);
3446         if (err)
3447                 return err;
3448
3449         err = platform_driver_register(&mac80211_hwsim_driver);
3450         if (err)
3451                 goto out_unregister_pernet;
3452
3453         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3454         if (IS_ERR(hwsim_class)) {
3455                 err = PTR_ERR(hwsim_class);
3456                 goto out_unregister_driver;
3457         }
3458
3459         err = hwsim_init_netlink();
3460         if (err < 0)
3461                 goto out_unregister_driver;
3462
3463         for (i = 0; i < radios; i++) {
3464                 struct hwsim_new_radio_params param = { 0 };
3465
3466                 param.channels = channels;
3467
3468                 switch (regtest) {
3469                 case HWSIM_REGTEST_DIFF_COUNTRY:
3470                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3471                                 param.reg_alpha2 = hwsim_alpha2s[i];
3472                         break;
3473                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3474                         if (!i)
3475                                 param.reg_alpha2 = hwsim_alpha2s[0];
3476                         break;
3477                 case HWSIM_REGTEST_STRICT_ALL:
3478                         param.reg_strict = true;
3479                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3480                         param.reg_alpha2 = hwsim_alpha2s[0];
3481                         break;
3482                 case HWSIM_REGTEST_WORLD_ROAM:
3483                         if (i == 0)
3484                                 param.regd = &hwsim_world_regdom_custom_01;
3485                         break;
3486                 case HWSIM_REGTEST_CUSTOM_WORLD:
3487                         param.regd = &hwsim_world_regdom_custom_01;
3488                         break;
3489                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3490                         if (i == 0)
3491                                 param.regd = &hwsim_world_regdom_custom_01;
3492                         else if (i == 1)
3493                                 param.regd = &hwsim_world_regdom_custom_02;
3494                         break;
3495                 case HWSIM_REGTEST_STRICT_FOLLOW:
3496                         if (i == 0) {
3497                                 param.reg_strict = true;
3498                                 param.reg_alpha2 = hwsim_alpha2s[0];
3499                         }
3500                         break;
3501                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3502                         if (i == 0) {
3503                                 param.reg_strict = true;
3504                                 param.reg_alpha2 = hwsim_alpha2s[0];
3505                         } else if (i == 1) {
3506                                 param.reg_alpha2 = hwsim_alpha2s[1];
3507                         }
3508                         break;
3509                 case HWSIM_REGTEST_ALL:
3510                         switch (i) {
3511                         case 0:
3512                                 param.regd = &hwsim_world_regdom_custom_01;
3513                                 break;
3514                         case 1:
3515                                 param.regd = &hwsim_world_regdom_custom_02;
3516                                 break;
3517                         case 2:
3518                                 param.reg_alpha2 = hwsim_alpha2s[0];
3519                                 break;
3520                         case 3:
3521                                 param.reg_alpha2 = hwsim_alpha2s[1];
3522                                 break;
3523                         case 4:
3524                                 param.reg_strict = true;
3525                                 param.reg_alpha2 = hwsim_alpha2s[2];
3526                                 break;
3527                         }
3528                         break;
3529                 default:
3530                         break;
3531                 }
3532
3533                 param.p2p_device = support_p2p_device;
3534                 param.use_chanctx = channels > 1;
3535
3536                 err = mac80211_hwsim_new_radio(NULL, &param);
3537                 if (err < 0)
3538                         goto out_free_radios;
3539         }
3540
3541         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3542                                  hwsim_mon_setup);
3543         if (hwsim_mon == NULL) {
3544                 err = -ENOMEM;
3545                 goto out_free_radios;
3546         }
3547
3548         rtnl_lock();
3549         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3550         if (err < 0) {
3551                 rtnl_unlock();
3552                 goto out_free_radios;
3553         }
3554
3555         err = register_netdevice(hwsim_mon);
3556         if (err < 0) {
3557                 rtnl_unlock();
3558                 goto out_free_mon;
3559         }
3560         rtnl_unlock();
3561
3562         return 0;
3563
3564 out_free_mon:
3565         free_netdev(hwsim_mon);
3566 out_free_radios:
3567         mac80211_hwsim_free();
3568 out_unregister_driver:
3569         platform_driver_unregister(&mac80211_hwsim_driver);
3570 out_unregister_pernet:
3571         unregister_pernet_device(&hwsim_net_ops);
3572         return err;
3573 }
3574 module_init(init_mac80211_hwsim);
3575
3576 static void __exit exit_mac80211_hwsim(void)
3577 {
3578         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3579
3580         hwsim_exit_netlink();
3581
3582         mac80211_hwsim_free();
3583         unregister_netdev(hwsim_mon);
3584         platform_driver_unregister(&mac80211_hwsim_driver);
3585         unregister_pernet_device(&hwsim_net_ops);
3586 }
3587 module_exit(exit_mac80211_hwsim);