drivers/net/wireless/mac80211_hwsim.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   4  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   5  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   6  * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
   7  * Copyright (C) 2018 - 2020 Intel Corporation
   8  */
   9
  10 /*
  11  * TODO:
  12  * - Add TSF sync and fix IBSS beacon transmission by adding
  13  *   competition for "air time" at TBTT
  14  * - RX filtering based on filter configuration (data->rx_filter)
  15  */
  16
  17 #include <linux/list.h>
  18 #include <linux/slab.h>
  19 #include <linux/spinlock.h>
  20 #include <net/dst.h>
  21 #include <net/xfrm.h>
  22 #include <net/mac80211.h>
  23 #include <net/ieee80211_radiotap.h>
  24 #include <linux/if_arp.h>
  25 #include <linux/rtnetlink.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/debugfs.h>
  29 #include <linux/module.h>
  30 #include <linux/ktime.h>
  31 #include <net/genetlink.h>
  32 #include <net/net_namespace.h>
  33 #include <net/netns/generic.h>
  34 #include <linux/rhashtable.h>
  35 #include <linux/nospec.h>
  36 #include <linux/virtio.h>
  37 #include <linux/virtio_ids.h>
  38 #include <linux/virtio_config.h>
  39 #include "mac80211_hwsim.h"
  40
  41 #define WARN_QUEUE 100
  42 #define MAX_QUEUE 200
  43
  44 MODULE_AUTHOR("Jouni Malinen");
  45 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  46 MODULE_LICENSE("GPL");
  47
  48 static int radios = 2;
  49 module_param(radios, int, 0444);
  50 MODULE_PARM_DESC(radios, "Number of simulated radios");
  51
  52 static int channels = 1;
  53 module_param(channels, int, 0444);
  54 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  55
  56 static bool paged_rx = false;
  57 module_param(paged_rx, bool, 0644);
  58 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  59
  60 static bool rctbl = false;
  61 module_param(rctbl, bool, 0444);
  62 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  63
  64 static bool support_p2p_device = true;
  65 module_param(support_p2p_device, bool, 0444);
  66 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  67
  68 /**
  69  * enum hwsim_regtest - the type of regulatory tests we offer
  70  *
  71  * These are the different values you can use for the regtest
  72  * module parameter. This is useful to help test world roaming
  73  * and the driver regulatory_hint() call and combinations of these.
  74  * If you want to do specific alpha2 regulatory domain tests simply
  75  * use the userspace regulatory request as that will be respected as
  76  * well without the need of this module parameter. This is designed
  77  * only for testing the driver regulatory request, world roaming
  78  * and all possible combinations.
  79  *
  80  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  81  *      this is the default value.
  82  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  83  *      hint, only one driver regulatory hint will be sent as such the
  84  *      secondary radios are expected to follow.
  85  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  86  *      request with all radios reporting the same regulatory domain.
  87  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  88  *      different regulatory domains requests. Expected behaviour is for
  89  *      an intersection to occur but each device will still use their
  90  *      respective regulatory requested domains. Subsequent radios will
  91  *      use the resulting intersection.
  92  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  93  *      this by using a custom beacon-capable regulatory domain for the first
  94  *      radio. All other device world roam.
  95  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  96  *      domain requests. All radios will adhere to this custom world regulatory
  97  *      domain.
  98  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  99  *      domain requests. The first radio will adhere to the first custom world
 100  *      regulatory domain, the second one to the second custom world regulatory
 101  *      domain. All other devices will world roam.
 102  * @HWSIM_REGTEST_STRICT_FOLLOW: Used for testing strict regulatory domain
 103  *      settings, only the first radio will send a regulatory domain request
 104  *      and use strict settings. The rest of the radios are expected to follow.
 105  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 106  *      settings. All radios will adhere to this.
 107  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 108  *      domain settings, combined with secondary driver regulatory domain
 109  *      settings. The first radio will get a strict regulatory domain setting
 110  *      using the first driver regulatory request and the second radio will use
 111  *      non-strict settings using the second driver regulatory request. All
 112  *      other devices should follow the intersection created between the
 113  *      first two.
 114  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 115  *      at least 6 radios for a complete test. We will test in this order:
 116  *      1 - driver custom world regulatory domain
 117  *      2 - second custom world regulatory domain
 118  *      3 - first driver regulatory domain request
 119  *      4 - second driver regulatory domain request
 120  *      5 - strict regulatory domain settings using the third driver regulatory
 121  *          domain request
 122  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 123  *                 regulatory requests.
 124  */
 125 enum hwsim_regtest {
 126         HWSIM_REGTEST_DISABLED = 0,
 127         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 128         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 129         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 130         HWSIM_REGTEST_WORLD_ROAM = 4,
 131         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 132         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 133         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 134         HWSIM_REGTEST_STRICT_ALL = 8,
 135         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 136         HWSIM_REGTEST_ALL = 10,
 137 };
 138
 139 /* Set to one of the HWSIM_REGTEST_* values above */
 140 static int regtest = HWSIM_REGTEST_DISABLED;
 141 module_param(regtest, int, 0444);
 142 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 143
 144 static const char *hwsim_alpha2s[] = {
 145         "FI",
 146         "AL",
 147         "US",
 148         "DE",
 149         "JP",
 150         "AL",
 151 };
 152
 153 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 154         .n_reg_rules = 5,
 155         .alpha2 =  "99",
 156         .reg_rules = {
 157                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 158                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 159                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 160                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 161                 REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
 162         }
 163 };
 164
 165 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 166         .n_reg_rules = 3,
 167         .alpha2 =  "99",
 168         .reg_rules = {
 169                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 170                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 171                          NL80211_RRF_NO_IR),
 172                 REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
 173         }
 174 };
 175
 176 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 177         &hwsim_world_regdom_custom_01,
 178         &hwsim_world_regdom_custom_02,
 179 };
 180
 181 struct hwsim_vif_priv {
 182         u32 magic;
 183         u8 bssid[ETH_ALEN];
 184         bool assoc;
 185         bool bcn_en;
 186         u16 aid;
 187 };
 188
 189 #define HWSIM_VIF_MAGIC 0x69537748
 190
 191 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 192 {
 193         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 194         WARN(vp->magic != HWSIM_VIF_MAGIC,
 195              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 196              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 197 }
 198
 199 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = HWSIM_VIF_MAGIC;
 203 }
 204
 205 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 206 {
 207         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 208         vp->magic = 0;
 209 }
 210
 211 struct hwsim_sta_priv {
 212         u32 magic;
 213 };
 214
 215 #define HWSIM_STA_MAGIC 0x6d537749
 216
 217 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 221 }
 222
 223 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = HWSIM_STA_MAGIC;
 227 }
 228
 229 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 230 {
 231         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 232         sp->magic = 0;
 233 }
 234
 235 struct hwsim_chanctx_priv {
 236         u32 magic;
 237 };
 238
 239 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 240
 241 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 245 }
 246
 247 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = HWSIM_CHANCTX_MAGIC;
 251 }
 252
 253 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 254 {
 255         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 256         cp->magic = 0;
 257 }
 258
 259 static unsigned int hwsim_net_id;
 260
 261 static DEFINE_IDA(hwsim_netgroup_ida);
 262
 263 struct hwsim_net {
 264         int netgroup;
 265         u32 wmediumd;
 266 };
 267
 268 static inline int hwsim_net_get_netgroup(struct net *net)
 269 {
 270         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 271
 272         return hwsim_net->netgroup;
 273 }
 274
 275 static inline int hwsim_net_set_netgroup(struct net *net)
 276 {
 277         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 278
 279         hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
 280                                              0, 0, GFP_KERNEL);
 281         return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
 282 }
 283
 284 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 285 {
 286         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 287
 288         return hwsim_net->wmediumd;
 289 }
 290
 291 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 292 {
 293         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 294
 295         hwsim_net->wmediumd = portid;
 296 }
 297
 298 static struct class *hwsim_class;
 299
 300 static struct net_device *hwsim_mon; /* global monitor netdev */
 301
 302 #define CHAN2G(_freq)  { \
 303         .band = NL80211_BAND_2GHZ, \
 304         .center_freq = (_freq), \
 305         .hw_value = (_freq), \
 306 }
 307
 308 #define CHAN5G(_freq) { \
 309         .band = NL80211_BAND_5GHZ, \
 310         .center_freq = (_freq), \
 311         .hw_value = (_freq), \
 312 }
 313
 314 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 315         CHAN2G(2412), /* Channel 1 */
 316         CHAN2G(2417), /* Channel 2 */
 317         CHAN2G(2422), /* Channel 3 */
 318         CHAN2G(2427), /* Channel 4 */
 319         CHAN2G(2432), /* Channel 5 */
 320         CHAN2G(2437), /* Channel 6 */
 321         CHAN2G(2442), /* Channel 7 */
 322         CHAN2G(2447), /* Channel 8 */
 323         CHAN2G(2452), /* Channel 9 */
 324         CHAN2G(2457), /* Channel 10 */
 325         CHAN2G(2462), /* Channel 11 */
 326         CHAN2G(2467), /* Channel 12 */
 327         CHAN2G(2472), /* Channel 13 */
 328         CHAN2G(2484), /* Channel 14 */
 329 };
 330
 331 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 332         CHAN5G(5180), /* Channel 36 */
 333         CHAN5G(5200), /* Channel 40 */
 334         CHAN5G(5220), /* Channel 44 */
 335         CHAN5G(5240), /* Channel 48 */
 336
 337         CHAN5G(5260), /* Channel 52 */
 338         CHAN5G(5280), /* Channel 56 */
 339         CHAN5G(5300), /* Channel 60 */
 340         CHAN5G(5320), /* Channel 64 */
 341
 342         CHAN5G(5500), /* Channel 100 */
 343         CHAN5G(5520), /* Channel 104 */
 344         CHAN5G(5540), /* Channel 108 */
 345         CHAN5G(5560), /* Channel 112 */
 346         CHAN5G(5580), /* Channel 116 */
 347         CHAN5G(5600), /* Channel 120 */
 348         CHAN5G(5620), /* Channel 124 */
 349         CHAN5G(5640), /* Channel 128 */
 350         CHAN5G(5660), /* Channel 132 */
 351         CHAN5G(5680), /* Channel 136 */
 352         CHAN5G(5700), /* Channel 140 */
 353
 354         CHAN5G(5745), /* Channel 149 */
 355         CHAN5G(5765), /* Channel 153 */
 356         CHAN5G(5785), /* Channel 157 */
 357         CHAN5G(5805), /* Channel 161 */
 358         CHAN5G(5825), /* Channel 165 */
 359         CHAN5G(5845), /* Channel 169 */
 360
 361         CHAN5G(5855), /* Channel 171 */
 362         CHAN5G(5860), /* Channel 172 */
 363         CHAN5G(5865), /* Channel 173 */
 364         CHAN5G(5870), /* Channel 174 */
 365
 366         CHAN5G(5875), /* Channel 175 */
 367         CHAN5G(5880), /* Channel 176 */
 368         CHAN5G(5885), /* Channel 177 */
 369         CHAN5G(5890), /* Channel 178 */
 370         CHAN5G(5895), /* Channel 179 */
 371         CHAN5G(5900), /* Channel 180 */
 372         CHAN5G(5905), /* Channel 181 */
 373
 374         CHAN5G(5910), /* Channel 182 */
 375         CHAN5G(5915), /* Channel 183 */
 376         CHAN5G(5920), /* Channel 184 */
 377         CHAN5G(5925), /* Channel 185 */
 378 };
 379
 380 #define NUM_S1G_CHANS_US 51
 381 static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
 382
 383 static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
 384         .s1g = true,
 385         .cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
 386                  0,
 387                  0,
 388                  S1G_CAP3_MAX_MPDU_LEN,
 389                  0,
 390                  S1G_CAP5_AMPDU,
 391                  0,
 392                  S1G_CAP7_DUP_1MHZ,
 393                  S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
 394                  0},
 395         .nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
 396         /* RX Highest Supported Long GI Data Rate 0:7 */
 397                      0,
 398         /* RX Highest Supported Long GI Data Rate 0:7 */
 399         /* TX S1G MCS Map 0:6 */
 400                      0xfa,
 401         /* TX S1G MCS Map :7 */
 402         /* TX Highest Supported Long GI Data Rate 0:6 */
 403                      0x80,
 404         /* TX Highest Supported Long GI Data Rate 7:8 */
 405         /* Rx Single spatial stream and S1G-MCS Map for 1MHz */
 406         /* Tx Single spatial stream and S1G-MCS Map for 1MHz */
 407                      0 },
 408 };
 409
 410 static void hwsim_init_s1g_channels(struct ieee80211_channel *channels)
 411 {
 412         int ch, freq;
 413
 414         for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
 415                 freq = 902000 + (ch + 1) * 500;
 416                 channels[ch].band = NL80211_BAND_S1GHZ;
 417                 channels[ch].center_freq = KHZ_TO_MHZ(freq);
 418                 channels[ch].freq_offset = freq % 1000;
 419                 channels[ch].hw_value = ch + 1;
 420         }
 421 }
 422
 423 static const struct ieee80211_rate hwsim_rates[] = {
 424         { .bitrate = 10 },
 425         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 426         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 427         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 428         { .bitrate = 60 },
 429         { .bitrate = 90 },
 430         { .bitrate = 120 },
 431         { .bitrate = 180 },
 432         { .bitrate = 240 },
 433         { .bitrate = 360 },
 434         { .bitrate = 480 },
 435         { .bitrate = 540 }
 436 };
 437
 438 static const u32 hwsim_ciphers[] = {
 439         WLAN_CIPHER_SUITE_WEP40,
 440         WLAN_CIPHER_SUITE_WEP104,
 441         WLAN_CIPHER_SUITE_TKIP,
 442         WLAN_CIPHER_SUITE_CCMP,
 443         WLAN_CIPHER_SUITE_CCMP_256,
 444         WLAN_CIPHER_SUITE_GCMP,
 445         WLAN_CIPHER_SUITE_GCMP_256,
 446         WLAN_CIPHER_SUITE_AES_CMAC,
 447         WLAN_CIPHER_SUITE_BIP_CMAC_256,
 448         WLAN_CIPHER_SUITE_BIP_GMAC_128,
 449         WLAN_CIPHER_SUITE_BIP_GMAC_256,
 450 };
 451
 452 #define OUI_QCA 0x001374
 453 #define QCA_NL80211_SUBCMD_TEST 1
 454 enum qca_nl80211_vendor_subcmds {
 455         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 456         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 457 };
 458
 459 static const struct nla_policy
 460 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 461         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 462 };
 463
 464 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 465                                           struct wireless_dev *wdev,
 466                                           const void *data, int data_len)
 467 {
 468         struct sk_buff *skb;
 469         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 470         int err;
 471         u32 val;
 472
 473         err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
 474                                    data_len, hwsim_vendor_test_policy, NULL);
 475         if (err)
 476                 return err;
 477         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 478                 return -EINVAL;
 479         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 480         wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
 481
 482         /* Send a vendor event as a test. Note that this would not normally be
 483          * done within a command handler, but rather, based on some other
 484          * trigger. For simplicity, this command is used to trigger the event
 485          * here.
 486          *
 487          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 488          */
 489         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 490         if (skb) {
 491                 /* skb_put() or nla_put() will fill up data within
 492                  * NL80211_ATTR_VENDOR_DATA.
 493                  */
 494
 495                 /* Add vendor data */
 496                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 497
 498                 /* Send the event - this will call nla_nest_end() */
 499                 cfg80211_vendor_event(skb, GFP_KERNEL);
 500         }
 501
 502         /* Send a response to the command */
 503         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 504         if (!skb)
 505                 return -ENOMEM;
 506
 507         /* skb_put() or nla_put() will fill up data within
 508          * NL80211_ATTR_VENDOR_DATA
 509          */
 510         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 511
 512         return cfg80211_vendor_cmd_reply(skb);
 513 }
 514
 515 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 516         {
 517                 .info = { .vendor_id = OUI_QCA,
 518                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 519                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 520                 .doit = mac80211_hwsim_vendor_cmd_test,
 521                 .policy = hwsim_vendor_test_policy,
 522                 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
 523         }
 524 };
 525
 526 /* Advertise support vendor specific events */
 527 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 528         { .vendor_id = OUI_QCA, .subcmd = 1 },
 529 };
 530
 531 static spinlock_t hwsim_radio_lock;
 532 static LIST_HEAD(hwsim_radios);
 533 static struct rhashtable hwsim_radios_rht;
 534 static int hwsim_radio_idx;
 535 static int hwsim_radios_generation = 1;
 536
 537 static struct platform_driver mac80211_hwsim_driver = {
 538         .driver = {
 539                 .name = "mac80211_hwsim",
 540         },
 541 };
 542
 543 struct mac80211_hwsim_data {
 544         struct list_head list;
 545         struct rhash_head rht;
 546         struct ieee80211_hw *hw;
 547         struct device *dev;
 548         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 549         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 550         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 551         struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
 552         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 553         struct ieee80211_iface_combination if_combination;
 554         struct ieee80211_iface_limit if_limits[3];
 555         int n_if_limits;
 556
 557         u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
 558
 559         struct mac_address addresses[2];
 560         int channels, idx;
 561         bool use_chanctx;
 562         bool destroy_on_close;
 563         u32 portid;
 564         char alpha2[2];
 565         const struct ieee80211_regdomain *regd;
 566
 567         struct ieee80211_channel *tmp_chan;
 568         struct ieee80211_channel *roc_chan;
 569         u32 roc_duration;
 570         struct delayed_work roc_start;
 571         struct delayed_work roc_done;
 572         struct delayed_work hw_scan;
 573         struct cfg80211_scan_request *hw_scan_request;
 574         struct ieee80211_vif *hw_scan_vif;
 575         int scan_chan_idx;
 576         u8 scan_addr[ETH_ALEN];
 577         struct {
 578                 struct ieee80211_channel *channel;
 579                 unsigned long next_start, start, end;
 580         } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 581                       ARRAY_SIZE(hwsim_channels_5ghz)];
 582
 583         struct ieee80211_channel *channel;
 584         u64 beacon_int  /* beacon interval in us */;
 585         unsigned int rx_filter;
 586         bool started, idle, scanning;
 587         struct mutex mutex;
 588         struct hrtimer beacon_timer;
 589         enum ps_mode {
 590                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 591         } ps;
 592         bool ps_poll_pending;
 593         struct dentry *debugfs;
 594
 595         uintptr_t pending_cookie;
 596         struct sk_buff_head pending;    /* packets pending */
 597         /*
 598          * Only radios in the same group can communicate together (the
 599          * channel has to match too). Each bit represents a group. A
 600          * radio can be in more than one group.
 601          */
 602         u64 group;
 603
 604         /* group shared by radios created in the same netns */
 605         int netgroup;
 606         /* wmediumd portid responsible for netgroup of this radio */
 607         u32 wmediumd;
 608
 609         /* difference between this hw's clock and the real clock, in usecs */
 610         s64 tsf_offset;
 611         s64 bcn_delta;
 612         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 613         u64 abs_bcn_ts;
 614
 615         /* Stats */
 616         u64 tx_pkts;
 617         u64 rx_pkts;
 618         u64 tx_bytes;
 619         u64 rx_bytes;
 620         u64 tx_dropped;
 621         u64 tx_failed;
 622 };
 623
 624 static const struct rhashtable_params hwsim_rht_params = {
 625         .nelem_hint = 2,
 626         .automatic_shrinking = true,
 627         .key_len = ETH_ALEN,
 628         .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
 629         .head_offset = offsetof(struct mac80211_hwsim_data, rht),
 630 };
 631
 632 struct hwsim_radiotap_hdr {
 633         struct ieee80211_radiotap_header hdr;
 634         __le64 rt_tsft;
 635         u8 rt_flags;
 636         u8 rt_rate;
 637         __le16 rt_channel;
 638         __le16 rt_chbitmask;
 639 } __packed;
 640
 641 struct hwsim_radiotap_ack_hdr {
 642         struct ieee80211_radiotap_header hdr;
 643         u8 rt_flags;
 644         u8 pad;
 645         __le16 rt_channel;
 646         __le16 rt_chbitmask;
 647 } __packed;
 648
 649 /* MAC80211_HWSIM netlink family */
 650 static struct genl_family hwsim_genl_family;
 651
 652 enum hwsim_multicast_groups {
 653         HWSIM_MCGRP_CONFIG,
 654 };
 655
 656 static const struct genl_multicast_group hwsim_mcgrps[] = {
 657         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 658 };
 659
 660 /* MAC80211_HWSIM netlink policy */
 661
 662 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 663         [HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
 664         [HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
 665         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 666                                .len = IEEE80211_MAX_DATA_LEN },
 667         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 668         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 669         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 670         [HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
 671                                  .len = IEEE80211_TX_MAX_RATES *
 672                                         sizeof(struct hwsim_tx_rate)},
 673         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 674         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 675         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 676         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 677         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 678         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 679         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 680         [HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
 681         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 682         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 683         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 684         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 685         [HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
 686         [HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
 687         [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
 688         [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
 689 };
 690
 691 #if IS_REACHABLE(CONFIG_VIRTIO)
 692
 693 /* MAC80211_HWSIM virtio queues */
 694 static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
 695 static bool hwsim_virtio_enabled;
 696 static spinlock_t hwsim_virtio_lock;
 697
 698 static void hwsim_virtio_rx_work(struct work_struct *work);
 699 static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
 700
 701 static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 702                            struct sk_buff *skb)
 703 {
 704         struct scatterlist sg[1];
 705         unsigned long flags;
 706         int err;
 707
 708         spin_lock_irqsave(&hwsim_virtio_lock, flags);
 709         if (!hwsim_virtio_enabled) {
 710                 err = -ENODEV;
 711                 goto out_free;
 712         }
 713
 714         sg_init_one(sg, skb->head, skb_end_offset(skb));
 715         err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
 716                                    GFP_ATOMIC);
 717         if (err)
 718                 goto out_free;
 719         virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
 720         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 721         return 0;
 722
 723 out_free:
 724         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 725         nlmsg_free(skb);
 726         return err;
 727 }
 728 #else
 729 /* cause a linker error if this ends up being needed */
 730 extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 731                            struct sk_buff *skb);
 732 #define hwsim_virtio_enabled false
 733 #endif
 734
 735 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 736                                     struct sk_buff *skb,
 737                                     struct ieee80211_channel *chan);
 738
 739 /* sysfs attributes */
 740 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 741 {
 742         struct mac80211_hwsim_data *data = dat;
 743         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 744         struct sk_buff *skb;
 745         struct ieee80211_pspoll *pspoll;
 746
 747         if (!vp->assoc)
 748                 return;
 749
 750         wiphy_dbg(data->hw->wiphy,
 751                   "%s: send PS-Poll to %pM for aid %d\n",
 752                   __func__, vp->bssid, vp->aid);
 753
 754         skb = dev_alloc_skb(sizeof(*pspoll));
 755         if (!skb)
 756                 return;
 757         pspoll = skb_put(skb, sizeof(*pspoll));
 758         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 759                                             IEEE80211_STYPE_PSPOLL |
 760                                             IEEE80211_FCTL_PM);
 761         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 762         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 763         memcpy(pspoll->ta, mac, ETH_ALEN);
 764
 765         rcu_read_lock();
 766         mac80211_hwsim_tx_frame(data->hw, skb,
 767                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 768         rcu_read_unlock();
 769 }
 770
 771 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 772                                 struct ieee80211_vif *vif, int ps)
 773 {
 774         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 775         struct sk_buff *skb;
 776         struct ieee80211_hdr *hdr;
 777
 778         if (!vp->assoc)
 779                 return;
 780
 781         wiphy_dbg(data->hw->wiphy,
 782                   "%s: send data::nullfunc to %pM ps=%d\n",
 783                   __func__, vp->bssid, ps);
 784
 785         skb = dev_alloc_skb(sizeof(*hdr));
 786         if (!skb)
 787                 return;
 788         hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 789         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 790                                          IEEE80211_STYPE_NULLFUNC |
 791                                          IEEE80211_FCTL_TODS |
 792                                          (ps ? IEEE80211_FCTL_PM : 0));
 793         hdr->duration_id = cpu_to_le16(0);
 794         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 795         memcpy(hdr->addr2, mac, ETH_ALEN);
 796         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 797
 798         rcu_read_lock();
 799         mac80211_hwsim_tx_frame(data->hw, skb,
 800                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 801         rcu_read_unlock();
 802 }
 803
 804
 805 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 806                                    struct ieee80211_vif *vif)
 807 {
 808         struct mac80211_hwsim_data *data = dat;
 809         hwsim_send_nullfunc(data, mac, vif, 1);
 810 }
 811
 812 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 813                                       struct ieee80211_vif *vif)
 814 {
 815         struct mac80211_hwsim_data *data = dat;
 816         hwsim_send_nullfunc(data, mac, vif, 0);
 817 }
 818
 819 static int hwsim_fops_ps_read(void *dat, u64 *val)
 820 {
 821         struct mac80211_hwsim_data *data = dat;
 822         *val = data->ps;
 823         return 0;
 824 }
 825
 826 static int hwsim_fops_ps_write(void *dat, u64 val)
 827 {
 828         struct mac80211_hwsim_data *data = dat;
 829         enum ps_mode old_ps;
 830
 831         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 832             val != PS_MANUAL_POLL)
 833                 return -EINVAL;
 834
 835         if (val == PS_MANUAL_POLL) {
 836                 if (data->ps != PS_ENABLED)
 837                         return -EINVAL;
 838                 local_bh_disable();
 839                 ieee80211_iterate_active_interfaces_atomic(
 840                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 841                         hwsim_send_ps_poll, data);
 842                 local_bh_enable();
 843                 return 0;
 844         }
 845         old_ps = data->ps;
 846         data->ps = val;
 847
 848         local_bh_disable();
 849         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 850                 ieee80211_iterate_active_interfaces_atomic(
 851                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 852                         hwsim_send_nullfunc_ps, data);
 853         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 854                 ieee80211_iterate_active_interfaces_atomic(
 855                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 856                         hwsim_send_nullfunc_no_ps, data);
 857         }
 858         local_bh_enable();
 859
 860         return 0;
 861 }
 862
 863 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 864                          "%llu\n");
 865
 866 static int hwsim_write_simulate_radar(void *dat, u64 val)
 867 {
 868         struct mac80211_hwsim_data *data = dat;
 869
 870         ieee80211_radar_detected(data->hw);
 871
 872         return 0;
 873 }
 874
 875 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
 876                          hwsim_write_simulate_radar, "%llu\n");
 877
 878 static int hwsim_fops_group_read(void *dat, u64 *val)
 879 {
 880         struct mac80211_hwsim_data *data = dat;
 881         *val = data->group;
 882         return 0;
 883 }
 884
 885 static int hwsim_fops_group_write(void *dat, u64 val)
 886 {
 887         struct mac80211_hwsim_data *data = dat;
 888         data->group = val;
 889         return 0;
 890 }
 891
 892 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
 893                          hwsim_fops_group_read, hwsim_fops_group_write,
 894                          "%llx\n");
 895
 896 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 897                                         struct net_device *dev)
 898 {
 899         /* TODO: allow packet injection */
 900         dev_kfree_skb(skb);
 901         return NETDEV_TX_OK;
 902 }
 903
 904 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 905 {
 906         return ktime_to_us(ktime_get_real());
 907 }
 908
 909 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 910 {
 911         u64 now = mac80211_hwsim_get_tsf_raw();
 912         return cpu_to_le64(now + data->tsf_offset);
 913 }
 914
 915 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 916                                   struct ieee80211_vif *vif)
 917 {
 918         struct mac80211_hwsim_data *data = hw->priv;
 919         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 920 }
 921
 922 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 923                 struct ieee80211_vif *vif, u64 tsf)
 924 {
 925         struct mac80211_hwsim_data *data = hw->priv;
 926         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 927         u32 bcn_int = data->beacon_int;
 928         u64 delta = abs(tsf - now);
 929
 930         /* adjust after beaconing with new timestamp at old TBTT */
 931         if (tsf > now) {
 932                 data->tsf_offset += delta;
 933                 data->bcn_delta = do_div(delta, bcn_int);
 934         } else {
 935                 data->tsf_offset -= delta;
 936                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 937         }
 938 }
 939
 940 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 941                                       struct sk_buff *tx_skb,
 942                                       struct ieee80211_channel *chan)
 943 {
 944         struct mac80211_hwsim_data *data = hw->priv;
 945         struct sk_buff *skb;
 946         struct hwsim_radiotap_hdr *hdr;
 947         u16 flags, bitrate;
 948         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 949         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 950
 951         if (!txrate)
 952                 bitrate = 0;
 953         else
 954                 bitrate = txrate->bitrate;
 955
 956         if (!netif_running(hwsim_mon))
 957                 return;
 958
 959         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 960         if (skb == NULL)
 961                 return;
 962
 963         hdr = skb_push(skb, sizeof(*hdr));
 964         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 965         hdr->hdr.it_pad = 0;
 966         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 967         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 968                                           (1 << IEEE80211_RADIOTAP_RATE) |
 969                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 970                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 971         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 972         hdr->rt_flags = 0;
 973         hdr->rt_rate = bitrate / 5;
 974         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 975         flags = IEEE80211_CHAN_2GHZ;
 976         if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
 977                 flags |= IEEE80211_CHAN_OFDM;
 978         else
 979                 flags |= IEEE80211_CHAN_CCK;
 980         hdr->rt_chbitmask = cpu_to_le16(flags);
 981
 982         skb->dev = hwsim_mon;
 983         skb_reset_mac_header(skb);
 984         skb->ip_summed = CHECKSUM_UNNECESSARY;
 985         skb->pkt_type = PACKET_OTHERHOST;
 986         skb->protocol = htons(ETH_P_802_2);
 987         memset(skb->cb, 0, sizeof(skb->cb));
 988         netif_rx(skb);
 989 }
 990
 991
 992 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 993                                        const u8 *addr)
 994 {
 995         struct sk_buff *skb;
 996         struct hwsim_radiotap_ack_hdr *hdr;
 997         u16 flags;
 998         struct ieee80211_hdr *hdr11;
 999
1000         if (!netif_running(hwsim_mon))
1001                 return;
1002
1003         skb = dev_alloc_skb(100);
1004         if (skb == NULL)
1005                 return;
1006
1007         hdr = skb_put(skb, sizeof(*hdr));
1008         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1009         hdr->hdr.it_pad = 0;
1010         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1011         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1012                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
1013         hdr->rt_flags = 0;
1014         hdr->pad = 0;
1015         hdr->rt_channel = cpu_to_le16(chan->center_freq);
1016         flags = IEEE80211_CHAN_2GHZ;
1017         hdr->rt_chbitmask = cpu_to_le16(flags);
1018
1019         hdr11 = skb_put(skb, 10);
1020         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1021                                            IEEE80211_STYPE_ACK);
1022         hdr11->duration_id = cpu_to_le16(0);
1023         memcpy(hdr11->addr1, addr, ETH_ALEN);
1024
1025         skb->dev = hwsim_mon;
1026         skb_reset_mac_header(skb);
1027         skb->ip_summed = CHECKSUM_UNNECESSARY;
1028         skb->pkt_type = PACKET_OTHERHOST;
1029         skb->protocol = htons(ETH_P_802_2);
1030         memset(skb->cb, 0, sizeof(skb->cb));
1031         netif_rx(skb);
1032 }
1033
1034 struct mac80211_hwsim_addr_match_data {
1035         u8 addr[ETH_ALEN];
1036         bool ret;
1037 };
1038
1039 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
1040                                      struct ieee80211_vif *vif)
1041 {
1042         struct mac80211_hwsim_addr_match_data *md = data;
1043
1044         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
1045                 md->ret = true;
1046 }
1047
1048 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
1049                                       const u8 *addr)
1050 {
1051         struct mac80211_hwsim_addr_match_data md = {
1052                 .ret = false,
1053         };
1054
1055         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
1056                 return true;
1057
1058         memcpy(md.addr, addr, ETH_ALEN);
1059
1060         ieee80211_iterate_active_interfaces_atomic(data->hw,
1061                                                    IEEE80211_IFACE_ITER_NORMAL,
1062                                                    mac80211_hwsim_addr_iter,
1063                                                    &md);
1064
1065         return md.ret;
1066 }
1067
1068 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
1069                            struct sk_buff *skb)
1070 {
1071         switch (data->ps) {
1072         case PS_DISABLED:
1073                 return true;
1074         case PS_ENABLED:
1075                 return false;
1076         case PS_AUTO_POLL:
1077                 /* TODO: accept (some) Beacons by default and other frames only
1078                  * if pending PS-Poll has been sent */
1079                 return true;
1080         case PS_MANUAL_POLL:
1081                 /* Allow unicast frames to own address if there is a pending
1082                  * PS-Poll */
1083                 if (data->ps_poll_pending &&
1084                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
1085                         data->ps_poll_pending = false;
1086                         return true;
1087                 }
1088                 return false;
1089         }
1090
1091         return true;
1092 }
1093
1094 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1095                                   struct sk_buff *skb, int portid)
1096 {
1097         struct net *net;
1098         bool found = false;
1099         int res = -ENOENT;
1100
1101         rcu_read_lock();
1102         for_each_net_rcu(net) {
1103                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1104                         res = genlmsg_unicast(net, skb, portid);
1105                         found = true;
1106                         break;
1107                 }
1108         }
1109         rcu_read_unlock();
1110
1111         if (!found)
1112                 nlmsg_free(skb);
1113
1114         return res;
1115 }
1116
1117 static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
1118                                          const u8 *addr, bool add)
1119 {
1120         struct mac80211_hwsim_data *data = hw->priv;
1121         u32 _portid = READ_ONCE(data->wmediumd);
1122         struct sk_buff *skb;
1123         void *msg_head;
1124
1125         if (!_portid && !hwsim_virtio_enabled)
1126                 return;
1127
1128         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1129         if (!skb)
1130                 return;
1131
1132         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1133                                add ? HWSIM_CMD_ADD_MAC_ADDR :
1134                                      HWSIM_CMD_DEL_MAC_ADDR);
1135         if (!msg_head) {
1136                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1137                 goto nla_put_failure;
1138         }
1139
1140         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1141                     ETH_ALEN, data->addresses[1].addr))
1142                 goto nla_put_failure;
1143
1144         if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
1145                 goto nla_put_failure;
1146
1147         genlmsg_end(skb, msg_head);
1148
1149         if (hwsim_virtio_enabled)
1150                 hwsim_tx_virtio(data, skb);
1151         else
1152                 hwsim_unicast_netgroup(data, skb, _portid);
1153         return;
1154 nla_put_failure:
1155         nlmsg_free(skb);
1156 }
1157
1158 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1159 {
1160         u16 result = 0;
1161
1162         if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1163                 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1164         if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1165                 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1166         if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1167                 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1168         if (rate->flags & IEEE80211_TX_RC_MCS)
1169                 result |= MAC80211_HWSIM_TX_RC_MCS;
1170         if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1171                 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1172         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1173                 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1174         if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1175                 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1176         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1177                 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1178         if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1179                 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1180         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1181                 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1182         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1183                 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1184
1185         return result;
1186 }
1187
1188 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1189                                        struct sk_buff *my_skb,
1190                                        int dst_portid)
1191 {
1192         struct sk_buff *skb;
1193         struct mac80211_hwsim_data *data = hw->priv;
1194         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1195         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1196         void *msg_head;
1197         unsigned int hwsim_flags = 0;
1198         int i;
1199         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1200         struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1201         uintptr_t cookie;
1202
1203         if (data->ps != PS_DISABLED)
1204                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1205         /* If the queue contains MAX_QUEUE skb's drop some */
1206         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1207                 /* Droping until WARN_QUEUE level */
1208                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1209                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1210                         data->tx_dropped++;
1211                 }
1212         }
1213
1214         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1215         if (skb == NULL)
1216                 goto nla_put_failure;
1217
1218         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1219                                HWSIM_CMD_FRAME);
1220         if (msg_head == NULL) {
1221                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1222                 goto nla_put_failure;
1223         }
1224
1225         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1226                     ETH_ALEN, data->addresses[1].addr))
1227                 goto nla_put_failure;
1228
1229         /* We get the skb->data */
1230         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1231                 goto nla_put_failure;
1232
1233         /* We get the flags for this transmission, and we translate them to
1234            wmediumd flags  */
1235
1236         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1237                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1238
1239         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1240                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1241
1242         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1243                 goto nla_put_failure;
1244
1245         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1246                 goto nla_put_failure;
1247
1248         /* We get the tx control (rate and retries) info*/
1249
1250         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1251                 tx_attempts[i].idx = info->status.rates[i].idx;
1252                 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1253                 tx_attempts[i].count = info->status.rates[i].count;
1254                 tx_attempts_flags[i].flags =
1255                                 trans_tx_rate_flags_ieee2hwsim(
1256                                                 &info->status.rates[i]);
1257         }
1258
1259         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1260                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1261                     tx_attempts))
1262                 goto nla_put_failure;
1263
1264         if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1265                     sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1266                     tx_attempts_flags))
1267                 goto nla_put_failure;
1268
1269         /* We create a cookie to identify this skb */
1270         data->pending_cookie++;
1271         cookie = data->pending_cookie;
1272         info->rate_driver_data[0] = (void *)cookie;
1273         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1274                 goto nla_put_failure;
1275
1276         genlmsg_end(skb, msg_head);
1277
1278         if (hwsim_virtio_enabled) {
1279                 if (hwsim_tx_virtio(data, skb))
1280                         goto err_free_txskb;
1281         } else {
1282                 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1283                         goto err_free_txskb;
1284         }
1285
1286         /* Enqueue the packet */
1287         skb_queue_tail(&data->pending, my_skb);
1288         data->tx_pkts++;
1289         data->tx_bytes += my_skb->len;
1290         return;
1291
1292 nla_put_failure:
1293         nlmsg_free(skb);
1294 err_free_txskb:
1295         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1296         ieee80211_free_txskb(hw, my_skb);
1297         data->tx_failed++;
1298 }
1299
1300 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1301                                struct ieee80211_channel *c2)
1302 {
1303         if (!c1 || !c2)
1304                 return false;
1305
1306         return c1->center_freq == c2->center_freq;
1307 }
1308
1309 struct tx_iter_data {
1310         struct ieee80211_channel *channel;
1311         bool receive;
1312 };
1313
1314 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1315                                    struct ieee80211_vif *vif)
1316 {
1317         struct tx_iter_data *data = _data;
1318
1319         if (!vif->chanctx_conf)
1320                 return;
1321
1322         if (!hwsim_chans_compat(data->channel,
1323                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1324                 return;
1325
1326         data->receive = true;
1327 }
1328
1329 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1330 {
1331         /*
1332          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1333          * e.g. like this:
1334          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1335          * (but you should use a valid OUI, not that)
1336          *
1337          * If anyone wants to 'donate' a radiotap OUI/subns code
1338          * please send a patch removing this #ifdef and changing
1339          * the values accordingly.
1340          */
1341 #ifdef HWSIM_RADIOTAP_OUI
1342         struct ieee80211_vendor_radiotap *rtap;
1343
1344         /*
1345          * Note that this code requires the headroom in the SKB
1346          * that was allocated earlier.
1347          */
1348         rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1349         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1350         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1351         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1352         rtap->subns = 127;
1353
1354         /*
1355          * Radiotap vendor namespaces can (and should) also be
1356          * split into fields by using the standard radiotap
1357          * presence bitmap mechanism. Use just BIT(0) here for
1358          * the presence bitmap.
1359          */
1360         rtap->present = BIT(0);
1361         /* We have 8 bytes of (dummy) data */
1362         rtap->len = 8;
1363         /* For testing, also require it to be aligned */
1364         rtap->align = 8;
1365         /* And also test that padding works, 4 bytes */
1366         rtap->pad = 4;
1367         /* push the data */
1368         memcpy(rtap->data, "ABCDEFGH", 8);
1369         /* make sure to clear padding, mac80211 doesn't */
1370         memset(rtap->data + 8, 0, 4);
1371
1372         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1373 #endif
1374 }
1375
1376 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1377                                           struct sk_buff *skb,
1378                                           struct ieee80211_channel *chan)
1379 {
1380         struct mac80211_hwsim_data *data = hw->priv, *data2;
1381         bool ack = false;
1382         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1383         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1384         struct ieee80211_rx_status rx_status;
1385         u64 now;
1386
1387         memset(&rx_status, 0, sizeof(rx_status));
1388         rx_status.flag |= RX_FLAG_MACTIME_START;
1389         rx_status.freq = chan->center_freq;
1390         rx_status.freq_offset = chan->freq_offset ? 1 : 0;
1391         rx_status.band = chan->band;
1392         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1393                 rx_status.rate_idx =
1394                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1395                 rx_status.nss =
1396                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1397                 rx_status.encoding = RX_ENC_VHT;
1398         } else {
1399                 rx_status.rate_idx = info->control.rates[0].idx;
1400                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1401                         rx_status.encoding = RX_ENC_HT;
1402         }
1403         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1404                 rx_status.bw = RATE_INFO_BW_40;
1405         else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1406                 rx_status.bw = RATE_INFO_BW_80;
1407         else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1408                 rx_status.bw = RATE_INFO_BW_160;
1409         else
1410                 rx_status.bw = RATE_INFO_BW_20;
1411         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1412                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1413         /* TODO: simulate real signal strength (and optional packet loss) */
1414         rx_status.signal = -50;
1415         if (info->control.vif)
1416                 rx_status.signal += info->control.vif->bss_conf.txpower;
1417
1418         if (data->ps != PS_DISABLED)
1419                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1420
1421         /* release the skb's source info */
1422         skb_orphan(skb);
1423         skb_dst_drop(skb);
1424         skb->mark = 0;
1425         skb_ext_reset(skb);
1426         nf_reset_ct(skb);
1427
1428         /*
1429          * Get absolute mactime here so all HWs RX at the "same time", and
1430          * absolute TX time for beacon mactime so the timestamp matches.
1431          * Giving beacons a different mactime than non-beacons looks messy, but
1432          * it helps the Toffset be exact and a ~10us mactime discrepancy
1433          * probably doesn't really matter.
1434          */
1435         if (ieee80211_is_beacon(hdr->frame_control) ||
1436             ieee80211_is_probe_resp(hdr->frame_control)) {
1437                 rx_status.boottime_ns = ktime_get_boottime_ns();
1438                 now = data->abs_bcn_ts;
1439         } else {
1440                 now = mac80211_hwsim_get_tsf_raw();
1441         }
1442
1443         /* Copy skb to all enabled radios that are on the current frequency */
1444         spin_lock(&hwsim_radio_lock);
1445         list_for_each_entry(data2, &hwsim_radios, list) {
1446                 struct sk_buff *nskb;
1447                 struct tx_iter_data tx_iter_data = {
1448                         .receive = false,
1449                         .channel = chan,
1450                 };
1451
1452                 if (data == data2)
1453                         continue;
1454
1455                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1456                     !hwsim_ps_rx_ok(data2, skb))
1457                         continue;
1458
1459                 if (!(data->group & data2->group))
1460                         continue;
1461
1462                 if (data->netgroup != data2->netgroup)
1463                         continue;
1464
1465                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1466                     !hwsim_chans_compat(chan, data2->channel)) {
1467                         ieee80211_iterate_active_interfaces_atomic(
1468                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1469                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1470                         if (!tx_iter_data.receive)
1471                                 continue;
1472                 }
1473
1474                 /*
1475                  * reserve some space for our vendor and the normal
1476                  * radiotap header, since we're copying anyway
1477                  */
1478                 if (skb->len < PAGE_SIZE && paged_rx) {
1479                         struct page *page = alloc_page(GFP_ATOMIC);
1480
1481                         if (!page)
1482                                 continue;
1483
1484                         nskb = dev_alloc_skb(128);
1485                         if (!nskb) {
1486                                 __free_page(page);
1487                                 continue;
1488                         }
1489
1490                         memcpy(page_address(page), skb->data, skb->len);
1491                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1492                 } else {
1493                         nskb = skb_copy(skb, GFP_ATOMIC);
1494                         if (!nskb)
1495                                 continue;
1496                 }
1497
1498                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1499                         ack = true;
1500
1501                 rx_status.mactime = now + data2->tsf_offset;
1502
1503                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1504
1505                 mac80211_hwsim_add_vendor_rtap(nskb);
1506
1507                 data2->rx_pkts++;
1508                 data2->rx_bytes += nskb->len;
1509                 ieee80211_rx_irqsafe(data2->hw, nskb);
1510         }
1511         spin_unlock(&hwsim_radio_lock);
1512
1513         return ack;
1514 }
1515
1516 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1517                               struct ieee80211_tx_control *control,
1518                               struct sk_buff *skb)
1519 {
1520         struct mac80211_hwsim_data *data = hw->priv;
1521         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1522         struct ieee80211_hdr *hdr = (void *)skb->data;
1523         struct ieee80211_chanctx_conf *chanctx_conf;
1524         struct ieee80211_channel *channel;
1525         bool ack;
1526         u32 _portid;
1527
1528         if (WARN_ON(skb->len < 10)) {
1529                 /* Should not happen; just a sanity check for addr1 use */
1530                 ieee80211_free_txskb(hw, skb);
1531                 return;
1532         }
1533
1534         if (!data->use_chanctx) {
1535                 channel = data->channel;
1536         } else if (txi->hw_queue == 4) {
1537                 channel = data->tmp_chan;
1538         } else {
1539                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1540                 if (chanctx_conf)
1541                         channel = chanctx_conf->def.chan;
1542                 else
1543                         channel = NULL;
1544         }
1545
1546         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1547                 ieee80211_free_txskb(hw, skb);
1548                 return;
1549         }
1550
1551         if (data->idle && !data->tmp_chan) {
1552                 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1553                 ieee80211_free_txskb(hw, skb);
1554                 return;
1555         }
1556
1557         if (txi->control.vif)
1558                 hwsim_check_magic(txi->control.vif);
1559         if (control->sta)
1560                 hwsim_check_sta_magic(control->sta);
1561
1562         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1563                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1564                                        txi->control.rates,
1565                                        ARRAY_SIZE(txi->control.rates));
1566
1567         if (skb->len >= 24 + 8 &&
1568             ieee80211_is_probe_resp(hdr->frame_control)) {
1569                 /* fake header transmission time */
1570                 struct ieee80211_mgmt *mgmt;
1571                 struct ieee80211_rate *txrate;
1572                 /* TODO: get MCS */
1573                 int bitrate = 100;
1574                 u64 ts;
1575
1576                 mgmt = (struct ieee80211_mgmt *)skb->data;
1577                 txrate = ieee80211_get_tx_rate(hw, txi);
1578                 if (txrate)
1579                         bitrate = txrate->bitrate;
1580                 ts = mac80211_hwsim_get_tsf_raw();
1581                 mgmt->u.probe_resp.timestamp =
1582                         cpu_to_le64(ts + data->tsf_offset +
1583                                     24 * 8 * 10 / bitrate);
1584         }
1585
1586         mac80211_hwsim_monitor_rx(hw, skb, channel);
1587
1588         /* wmediumd mode check */
1589         _portid = READ_ONCE(data->wmediumd);
1590
1591         if (_portid || hwsim_virtio_enabled)
1592                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1593
1594         /* NO wmediumd detected, perfect medium simulation */
1595         data->tx_pkts++;
1596         data->tx_bytes += skb->len;
1597         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1598
1599         if (ack && skb->len >= 16)
1600                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1601
1602         ieee80211_tx_info_clear_status(txi);
1603
1604         /* frame was transmitted at most favorable rate at first attempt */
1605         txi->control.rates[0].count = 1;
1606         txi->control.rates[1].idx = -1;
1607
1608         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1609                 txi->flags |= IEEE80211_TX_STAT_ACK;
1610         ieee80211_tx_status_irqsafe(hw, skb);
1611 }
1612
1613
1614 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1615 {
1616         struct mac80211_hwsim_data *data = hw->priv;
1617         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1618         data->started = true;
1619         return 0;
1620 }
1621
1622
1623 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1624 {
1625         struct mac80211_hwsim_data *data = hw->priv;
1626         data->started = false;
1627         hrtimer_cancel(&data->beacon_timer);
1628         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1629 }
1630
1631
1632 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1633                                         struct ieee80211_vif *vif)
1634 {
1635         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1636                   __func__, ieee80211_vif_type_p2p(vif),
1637                   vif->addr);
1638         hwsim_set_magic(vif);
1639
1640         if (vif->type != NL80211_IFTYPE_MONITOR)
1641                 mac80211_hwsim_config_mac_nl(hw, vif->addr, true);
1642
1643         vif->cab_queue = 0;
1644         vif->hw_queue[IEEE80211_AC_VO] = 0;
1645         vif->hw_queue[IEEE80211_AC_VI] = 1;
1646         vif->hw_queue[IEEE80211_AC_BE] = 2;
1647         vif->hw_queue[IEEE80211_AC_BK] = 3;
1648
1649         return 0;
1650 }
1651
1652
1653 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1654                                            struct ieee80211_vif *vif,
1655                                            enum nl80211_iftype newtype,
1656                                            bool newp2p)
1657 {
1658         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1659         wiphy_dbg(hw->wiphy,
1660                   "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1661                   __func__, ieee80211_vif_type_p2p(vif),
1662                     newtype, vif->addr);
1663         hwsim_check_magic(vif);
1664
1665         /*
1666          * interface may change from non-AP to AP in
1667          * which case this needs to be set up again
1668          */
1669         vif->cab_queue = 0;
1670
1671         return 0;
1672 }
1673
1674 static void mac80211_hwsim_remove_interface(
1675         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1676 {
1677         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1678                   __func__, ieee80211_vif_type_p2p(vif),
1679                   vif->addr);
1680         hwsim_check_magic(vif);
1681         hwsim_clear_magic(vif);
1682         if (vif->type != NL80211_IFTYPE_MONITOR)
1683                 mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
1684 }
1685
1686 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1687                                     struct sk_buff *skb,
1688                                     struct ieee80211_channel *chan)
1689 {
1690         struct mac80211_hwsim_data *data = hw->priv;
1691         u32 _pid = READ_ONCE(data->wmediumd);
1692
1693         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1694                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1695                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1696                                        txi->control.rates,
1697                                        ARRAY_SIZE(txi->control.rates));
1698         }
1699
1700         mac80211_hwsim_monitor_rx(hw, skb, chan);
1701
1702         if (_pid || hwsim_virtio_enabled)
1703                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1704
1705         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1706         dev_kfree_skb(skb);
1707 }
1708
1709 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1710                                      struct ieee80211_vif *vif)
1711 {
1712         struct mac80211_hwsim_data *data = arg;
1713         struct ieee80211_hw *hw = data->hw;
1714         struct ieee80211_tx_info *info;
1715         struct ieee80211_rate *txrate;
1716         struct ieee80211_mgmt *mgmt;
1717         struct sk_buff *skb;
1718         /* TODO: get MCS */
1719         int bitrate = 100;
1720
1721         hwsim_check_magic(vif);
1722
1723         if (vif->type != NL80211_IFTYPE_AP &&
1724             vif->type != NL80211_IFTYPE_MESH_POINT &&
1725             vif->type != NL80211_IFTYPE_ADHOC &&
1726             vif->type != NL80211_IFTYPE_OCB)
1727                 return;
1728
1729         skb = ieee80211_beacon_get(hw, vif);
1730         if (skb == NULL)
1731                 return;
1732         info = IEEE80211_SKB_CB(skb);
1733         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1734                 ieee80211_get_tx_rates(vif, NULL, skb,
1735                                        info->control.rates,
1736                                        ARRAY_SIZE(info->control.rates));
1737
1738         txrate = ieee80211_get_tx_rate(hw, info);
1739         if (txrate)
1740                 bitrate = txrate->bitrate;
1741
1742         mgmt = (struct ieee80211_mgmt *) skb->data;
1743         /* fake header transmission time */
1744         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1745         if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
1746                 struct ieee80211_ext *ext = (void *) mgmt;
1747
1748                 ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
1749                                                           data->tsf_offset +
1750                                                           10 * 8 * 10 /
1751                                                           bitrate);
1752         } else {
1753                 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1754                                                        data->tsf_offset +
1755                                                        24 * 8 * 10 /
1756                                                        bitrate);
1757         }
1758
1759         mac80211_hwsim_tx_frame(hw, skb,
1760                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1761
1762         while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
1763                 mac80211_hwsim_tx_frame(hw, skb,
1764                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1765         }
1766
1767         if (vif->csa_active && ieee80211_beacon_cntdwn_is_complete(vif))
1768                 ieee80211_csa_finish(vif);
1769 }
1770
1771 static enum hrtimer_restart
1772 mac80211_hwsim_beacon(struct hrtimer *timer)
1773 {
1774         struct mac80211_hwsim_data *data =
1775                 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1776         struct ieee80211_hw *hw = data->hw;
1777         u64 bcn_int = data->beacon_int;
1778
1779         if (!data->started)
1780                 return HRTIMER_NORESTART;
1781
1782         ieee80211_iterate_active_interfaces_atomic(
1783                 hw, IEEE80211_IFACE_ITER_NORMAL,
1784                 mac80211_hwsim_beacon_tx, data);
1785
1786         /* beacon at new TBTT + beacon interval */
1787         if (data->bcn_delta) {
1788                 bcn_int -= data->bcn_delta;
1789                 data->bcn_delta = 0;
1790         }
1791         hrtimer_forward(&data->beacon_timer, hrtimer_get_expires(timer),
1792                         ns_to_ktime(bcn_int * NSEC_PER_USEC));
1793         return HRTIMER_RESTART;
1794 }
1795
1796 static const char * const hwsim_chanwidths[] = {
1797         [NL80211_CHAN_WIDTH_5] = "ht5",
1798         [NL80211_CHAN_WIDTH_10] = "ht10",
1799         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1800         [NL80211_CHAN_WIDTH_20] = "ht20",
1801         [NL80211_CHAN_WIDTH_40] = "ht40",
1802         [NL80211_CHAN_WIDTH_80] = "vht80",
1803         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1804         [NL80211_CHAN_WIDTH_160] = "vht160",
1805         [NL80211_CHAN_WIDTH_1] = "1MHz",
1806         [NL80211_CHAN_WIDTH_2] = "2MHz",
1807         [NL80211_CHAN_WIDTH_4] = "4MHz",
1808         [NL80211_CHAN_WIDTH_8] = "8MHz",
1809         [NL80211_CHAN_WIDTH_16] = "16MHz",
1810 };
1811
1812 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1813 {
1814         struct mac80211_hwsim_data *data = hw->priv;
1815         struct ieee80211_conf *conf = &hw->conf;
1816         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1817                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1818                 [IEEE80211_SMPS_OFF] = "off",
1819                 [IEEE80211_SMPS_STATIC] = "static",
1820                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1821         };
1822         int idx;
1823
1824         if (conf->chandef.chan)
1825                 wiphy_dbg(hw->wiphy,
1826                           "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1827                           __func__,
1828                           conf->chandef.chan->center_freq,
1829                           conf->chandef.center_freq1,
1830                           conf->chandef.center_freq2,
1831                           hwsim_chanwidths[conf->chandef.width],
1832                           !!(conf->flags & IEEE80211_CONF_IDLE),
1833                           !!(conf->flags & IEEE80211_CONF_PS),
1834                           smps_modes[conf->smps_mode]);
1835         else
1836                 wiphy_dbg(hw->wiphy,
1837                           "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1838                           __func__,
1839                           !!(conf->flags & IEEE80211_CONF_IDLE),
1840                           !!(conf->flags & IEEE80211_CONF_PS),
1841                           smps_modes[conf->smps_mode]);
1842
1843         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1844
1845         WARN_ON(conf->chandef.chan && data->use_chanctx);
1846
1847         mutex_lock(&data->mutex);
1848         if (data->scanning && conf->chandef.chan) {
1849                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1850                         if (data->survey_data[idx].channel == data->channel) {
1851                                 data->survey_data[idx].start =
1852                                         data->survey_data[idx].next_start;
1853                                 data->survey_data[idx].end = jiffies;
1854                                 break;
1855                         }
1856                 }
1857
1858                 data->channel = conf->chandef.chan;
1859
1860                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1861                         if (data->survey_data[idx].channel &&
1862                             data->survey_data[idx].channel != data->channel)
1863                                 continue;
1864                         data->survey_data[idx].channel = data->channel;
1865                         data->survey_data[idx].next_start = jiffies;
1866                         break;
1867                 }
1868         } else {
1869                 data->channel = conf->chandef.chan;
1870         }
1871         mutex_unlock(&data->mutex);
1872
1873         if (!data->started || !data->beacon_int)
1874                 hrtimer_cancel(&data->beacon_timer);
1875         else if (!hrtimer_is_queued(&data->beacon_timer)) {
1876                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1877                 u32 bcn_int = data->beacon_int;
1878                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1879
1880                 hrtimer_start(&data->beacon_timer,
1881                               ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1882                               HRTIMER_MODE_REL_SOFT);
1883         }
1884
1885         return 0;
1886 }
1887
1888
1889 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1890                                             unsigned int changed_flags,
1891                                             unsigned int *total_flags,u64 multicast)
1892 {
1893         struct mac80211_hwsim_data *data = hw->priv;
1894
1895         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1896
1897         data->rx_filter = 0;
1898         if (*total_flags & FIF_ALLMULTI)
1899                 data->rx_filter |= FIF_ALLMULTI;
1900         if (*total_flags & FIF_MCAST_ACTION)
1901                 data->rx_filter |= FIF_MCAST_ACTION;
1902
1903         *total_flags = data->rx_filter;
1904 }
1905
1906 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1907                                        struct ieee80211_vif *vif)
1908 {
1909         unsigned int *count = data;
1910         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1911
1912         if (vp->bcn_en)
1913                 (*count)++;
1914 }
1915
1916 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1917                                             struct ieee80211_vif *vif,
1918                                             struct ieee80211_bss_conf *info,
1919                                             u32 changed)
1920 {
1921         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1922         struct mac80211_hwsim_data *data = hw->priv;
1923
1924         hwsim_check_magic(vif);
1925
1926         wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1927                   __func__, changed, vif->addr);
1928
1929         if (changed & BSS_CHANGED_BSSID) {
1930                 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1931                           __func__, info->bssid);
1932                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1933         }
1934
1935         if (changed & BSS_CHANGED_ASSOC) {
1936                 wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1937                           info->assoc, info->aid);
1938                 vp->assoc = info->assoc;
1939                 vp->aid = info->aid;
1940         }
1941
1942         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1943                 wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1944                           info->enable_beacon, info->beacon_int);
1945                 vp->bcn_en = info->enable_beacon;
1946                 if (data->started &&
1947                     !hrtimer_is_queued(&data->beacon_timer) &&
1948                     info->enable_beacon) {
1949                         u64 tsf, until_tbtt;
1950                         u32 bcn_int;
1951                         data->beacon_int = info->beacon_int * 1024;
1952                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1953                         bcn_int = data->beacon_int;
1954                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1955
1956                         hrtimer_start(&data->beacon_timer,
1957                                       ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1958                                       HRTIMER_MODE_REL_SOFT);
1959                 } else if (!info->enable_beacon) {
1960                         unsigned int count = 0;
1961                         ieee80211_iterate_active_interfaces_atomic(
1962                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1963                                 mac80211_hwsim_bcn_en_iter, &count);
1964                         wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
1965                                   count);
1966                         if (count == 0) {
1967                                 hrtimer_cancel(&data->beacon_timer);
1968                                 data->beacon_int = 0;
1969                         }
1970                 }
1971         }
1972
1973         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1974                 wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1975                           info->use_cts_prot);
1976         }
1977
1978         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1979                 wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1980                           info->use_short_preamble);
1981         }
1982
1983         if (changed & BSS_CHANGED_ERP_SLOT) {
1984                 wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1985         }
1986
1987         if (changed & BSS_CHANGED_HT) {
1988                 wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
1989                           info->ht_operation_mode);
1990         }
1991
1992         if (changed & BSS_CHANGED_BASIC_RATES) {
1993                 wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1994                           (unsigned long long) info->basic_rates);
1995         }
1996
1997         if (changed & BSS_CHANGED_TXPOWER)
1998                 wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1999 }
2000
2001 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
2002                                   struct ieee80211_vif *vif,
2003                                   struct ieee80211_sta *sta)
2004 {
2005         hwsim_check_magic(vif);
2006         hwsim_set_sta_magic(sta);
2007
2008         return 0;
2009 }
2010
2011 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
2012                                      struct ieee80211_vif *vif,
2013                                      struct ieee80211_sta *sta)
2014 {
2015         hwsim_check_magic(vif);
2016         hwsim_clear_sta_magic(sta);
2017
2018         return 0;
2019 }
2020
2021 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
2022                                       struct ieee80211_vif *vif,
2023                                       enum sta_notify_cmd cmd,
2024                                       struct ieee80211_sta *sta)
2025 {
2026         hwsim_check_magic(vif);
2027
2028         switch (cmd) {
2029         case STA_NOTIFY_SLEEP:
2030         case STA_NOTIFY_AWAKE:
2031                 /* TODO: make good use of these flags */
2032                 break;
2033         default:
2034                 WARN(1, "Invalid sta notify: %d\n", cmd);
2035                 break;
2036         }
2037 }
2038
2039 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
2040                                   struct ieee80211_sta *sta,
2041                                   bool set)
2042 {
2043         hwsim_check_sta_magic(sta);
2044         return 0;
2045 }
2046
2047 static int mac80211_hwsim_conf_tx(
2048         struct ieee80211_hw *hw,
2049         struct ieee80211_vif *vif, u16 queue,
2050         const struct ieee80211_tx_queue_params *params)
2051 {
2052         wiphy_dbg(hw->wiphy,
2053                   "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
2054                   __func__, queue,
2055                   params->txop, params->cw_min,
2056                   params->cw_max, params->aifs);
2057         return 0;
2058 }
2059
2060 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
2061                                      struct survey_info *survey)
2062 {
2063         struct mac80211_hwsim_data *hwsim = hw->priv;
2064
2065         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
2066                 return -ENOENT;
2067
2068         mutex_lock(&hwsim->mutex);
2069         survey->channel = hwsim->survey_data[idx].channel;
2070         if (!survey->channel) {
2071                 mutex_unlock(&hwsim->mutex);
2072                 return -ENOENT;
2073         }
2074
2075         /*
2076          * Magically conjured dummy values --- this is only ok for simulated hardware.
2077          *
2078          * A real driver which cannot determine real values noise MUST NOT
2079          * report any, especially not a magically conjured ones :-)
2080          */
2081         survey->filled = SURVEY_INFO_NOISE_DBM |
2082                          SURVEY_INFO_TIME |
2083                          SURVEY_INFO_TIME_BUSY;
2084         survey->noise = -92;
2085         survey->time =
2086                 jiffies_to_msecs(hwsim->survey_data[idx].end -
2087                                  hwsim->survey_data[idx].start);
2088         /* report 12.5% of channel time is used */
2089         survey->time_busy = survey->time/8;
2090         mutex_unlock(&hwsim->mutex);
2091
2092         return 0;
2093 }
2094
2095 #ifdef CONFIG_NL80211_TESTMODE
2096 /*
2097  * This section contains example code for using netlink
2098  * attributes with the testmode command in nl80211.
2099  */
2100
2101 /* These enums need to be kept in sync with userspace */
2102 enum hwsim_testmode_attr {
2103         __HWSIM_TM_ATTR_INVALID = 0,
2104         HWSIM_TM_ATTR_CMD       = 1,
2105         HWSIM_TM_ATTR_PS        = 2,
2106
2107         /* keep last */
2108         __HWSIM_TM_ATTR_AFTER_LAST,
2109         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
2110 };
2111
2112 enum hwsim_testmode_cmd {
2113         HWSIM_TM_CMD_SET_PS             = 0,
2114         HWSIM_TM_CMD_GET_PS             = 1,
2115         HWSIM_TM_CMD_STOP_QUEUES        = 2,
2116         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
2117 };
2118
2119 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
2120         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
2121         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
2122 };
2123
2124 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
2125                                        struct ieee80211_vif *vif,
2126                                        void *data, int len)
2127 {
2128         struct mac80211_hwsim_data *hwsim = hw->priv;
2129         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
2130         struct sk_buff *skb;
2131         int err, ps;
2132
2133         err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
2134                                    hwsim_testmode_policy, NULL);
2135         if (err)
2136                 return err;
2137
2138         if (!tb[HWSIM_TM_ATTR_CMD])
2139                 return -EINVAL;
2140
2141         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
2142         case HWSIM_TM_CMD_SET_PS:
2143                 if (!tb[HWSIM_TM_ATTR_PS])
2144                         return -EINVAL;
2145                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
2146                 return hwsim_fops_ps_write(hwsim, ps);
2147         case HWSIM_TM_CMD_GET_PS:
2148                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
2149                                                 nla_total_size(sizeof(u32)));
2150                 if (!skb)
2151                         return -ENOMEM;
2152                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
2153                         goto nla_put_failure;
2154                 return cfg80211_testmode_reply(skb);
2155         case HWSIM_TM_CMD_STOP_QUEUES:
2156                 ieee80211_stop_queues(hw);
2157                 return 0;
2158         case HWSIM_TM_CMD_WAKE_QUEUES:
2159                 ieee80211_wake_queues(hw);
2160                 return 0;
2161         default:
2162                 return -EOPNOTSUPP;
2163         }
2164
2165  nla_put_failure:
2166         kfree_skb(skb);
2167         return -ENOBUFS;
2168 }
2169 #endif
2170
2171 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
2172                                        struct ieee80211_vif *vif,
2173                                        struct ieee80211_ampdu_params *params)
2174 {
2175         struct ieee80211_sta *sta = params->sta;
2176         enum ieee80211_ampdu_mlme_action action = params->action;
2177         u16 tid = params->tid;
2178
2179         switch (action) {
2180         case IEEE80211_AMPDU_TX_START:
2181                 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
2182         case IEEE80211_AMPDU_TX_STOP_CONT:
2183         case IEEE80211_AMPDU_TX_STOP_FLUSH:
2184         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2185                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2186                 break;
2187         case IEEE80211_AMPDU_TX_OPERATIONAL:
2188                 break;
2189         case IEEE80211_AMPDU_RX_START:
2190         case IEEE80211_AMPDU_RX_STOP:
2191                 break;
2192         default:
2193                 return -EOPNOTSUPP;
2194         }
2195
2196         return 0;
2197 }
2198
2199 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2200                                  struct ieee80211_vif *vif,
2201                                  u32 queues, bool drop)
2202 {
2203         /* Not implemented, queues only on kernel side */
2204 }
2205
2206 static void hw_scan_work(struct work_struct *work)
2207 {
2208         struct mac80211_hwsim_data *hwsim =
2209                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2210         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2211         int dwell, i;
2212
2213         mutex_lock(&hwsim->mutex);
2214         if (hwsim->scan_chan_idx >= req->n_channels) {
2215                 struct cfg80211_scan_info info = {
2216                         .aborted = false,
2217                 };
2218
2219                 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2220                 ieee80211_scan_completed(hwsim->hw, &info);
2221                 hwsim->hw_scan_request = NULL;
2222                 hwsim->hw_scan_vif = NULL;
2223                 hwsim->tmp_chan = NULL;
2224                 mutex_unlock(&hwsim->mutex);
2225                 mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
2226                                              false);
2227                 return;
2228         }
2229
2230         wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2231                   req->channels[hwsim->scan_chan_idx]->center_freq);
2232
2233         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2234         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2235                                       IEEE80211_CHAN_RADAR) ||
2236             !req->n_ssids) {
2237                 dwell = 120;
2238         } else {
2239                 dwell = 30;
2240                 /* send probes */
2241                 for (i = 0; i < req->n_ssids; i++) {
2242                         struct sk_buff *probe;
2243                         struct ieee80211_mgmt *mgmt;
2244
2245                         probe = ieee80211_probereq_get(hwsim->hw,
2246                                                        hwsim->scan_addr,
2247                                                        req->ssids[i].ssid,
2248                                                        req->ssids[i].ssid_len,
2249                                                        req->ie_len);
2250                         if (!probe)
2251                                 continue;
2252
2253                         mgmt = (struct ieee80211_mgmt *) probe->data;
2254                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2255                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2256
2257                         if (req->ie_len)
2258                                 skb_put_data(probe, req->ie, req->ie_len);
2259
2260                         local_bh_disable();
2261                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2262                                                 hwsim->tmp_chan);
2263                         local_bh_enable();
2264                 }
2265         }
2266         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2267                                      msecs_to_jiffies(dwell));
2268         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2269         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2270         hwsim->survey_data[hwsim->scan_chan_idx].end =
2271                 jiffies + msecs_to_jiffies(dwell);
2272         hwsim->scan_chan_idx++;
2273         mutex_unlock(&hwsim->mutex);
2274 }
2275
2276 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2277                                   struct ieee80211_vif *vif,
2278                                   struct ieee80211_scan_request *hw_req)
2279 {
2280         struct mac80211_hwsim_data *hwsim = hw->priv;
2281         struct cfg80211_scan_request *req = &hw_req->req;
2282
2283         mutex_lock(&hwsim->mutex);
2284         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2285                 mutex_unlock(&hwsim->mutex);
2286                 return -EBUSY;
2287         }
2288         hwsim->hw_scan_request = req;
2289         hwsim->hw_scan_vif = vif;
2290         hwsim->scan_chan_idx = 0;
2291         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2292                 get_random_mask_addr(hwsim->scan_addr,
2293                                      hw_req->req.mac_addr,
2294                                      hw_req->req.mac_addr_mask);
2295         else
2296                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2297         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2298         mutex_unlock(&hwsim->mutex);
2299
2300         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2301         wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2302
2303         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2304
2305         return 0;
2306 }
2307
2308 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2309                                           struct ieee80211_vif *vif)
2310 {
2311         struct mac80211_hwsim_data *hwsim = hw->priv;
2312         struct cfg80211_scan_info info = {
2313                 .aborted = true,
2314         };
2315
2316         wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2317
2318         cancel_delayed_work_sync(&hwsim->hw_scan);
2319
2320         mutex_lock(&hwsim->mutex);
2321         ieee80211_scan_completed(hwsim->hw, &info);
2322         hwsim->tmp_chan = NULL;
2323         hwsim->hw_scan_request = NULL;
2324         hwsim->hw_scan_vif = NULL;
2325         mutex_unlock(&hwsim->mutex);
2326 }
2327
2328 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2329                                    struct ieee80211_vif *vif,
2330                                    const u8 *mac_addr)
2331 {
2332         struct mac80211_hwsim_data *hwsim = hw->priv;
2333
2334         mutex_lock(&hwsim->mutex);
2335
2336         if (hwsim->scanning) {
2337                 pr_debug("two hwsim sw_scans detected!\n");
2338                 goto out;
2339         }
2340
2341         pr_debug("hwsim sw_scan request, prepping stuff\n");
2342
2343         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2344         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2345         hwsim->scanning = true;
2346         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2347
2348 out:
2349         mutex_unlock(&hwsim->mutex);
2350 }
2351
2352 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2353                                             struct ieee80211_vif *vif)
2354 {
2355         struct mac80211_hwsim_data *hwsim = hw->priv;
2356
2357         mutex_lock(&hwsim->mutex);
2358
2359         pr_debug("hwsim sw_scan_complete\n");
2360         hwsim->scanning = false;
2361         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
2362         eth_zero_addr(hwsim->scan_addr);
2363
2364         mutex_unlock(&hwsim->mutex);
2365 }
2366
2367 static void hw_roc_start(struct work_struct *work)
2368 {
2369         struct mac80211_hwsim_data *hwsim =
2370                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2371
2372         mutex_lock(&hwsim->mutex);
2373
2374         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2375         hwsim->tmp_chan = hwsim->roc_chan;
2376         ieee80211_ready_on_channel(hwsim->hw);
2377
2378         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2379                                      msecs_to_jiffies(hwsim->roc_duration));
2380
2381         mutex_unlock(&hwsim->mutex);
2382 }
2383
2384 static void hw_roc_done(struct work_struct *work)
2385 {
2386         struct mac80211_hwsim_data *hwsim =
2387                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2388
2389         mutex_lock(&hwsim->mutex);
2390         ieee80211_remain_on_channel_expired(hwsim->hw);
2391         hwsim->tmp_chan = NULL;
2392         mutex_unlock(&hwsim->mutex);
2393
2394         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2395 }
2396
2397 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2398                               struct ieee80211_vif *vif,
2399                               struct ieee80211_channel *chan,
2400                               int duration,
2401                               enum ieee80211_roc_type type)
2402 {
2403         struct mac80211_hwsim_data *hwsim = hw->priv;
2404
2405         mutex_lock(&hwsim->mutex);
2406         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2407                 mutex_unlock(&hwsim->mutex);
2408                 return -EBUSY;
2409         }
2410
2411         hwsim->roc_chan = chan;
2412         hwsim->roc_duration = duration;
2413         mutex_unlock(&hwsim->mutex);
2414
2415         wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2416                   chan->center_freq, duration);
2417         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2418
2419         return 0;
2420 }
2421
2422 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2423                                struct ieee80211_vif *vif)
2424 {
2425         struct mac80211_hwsim_data *hwsim = hw->priv;
2426
2427         cancel_delayed_work_sync(&hwsim->roc_start);
2428         cancel_delayed_work_sync(&hwsim->roc_done);
2429
2430         mutex_lock(&hwsim->mutex);
2431         hwsim->tmp_chan = NULL;
2432         mutex_unlock(&hwsim->mutex);
2433
2434         wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2435
2436         return 0;
2437 }
2438
2439 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2440                                       struct ieee80211_chanctx_conf *ctx)
2441 {
2442         hwsim_set_chanctx_magic(ctx);
2443         wiphy_dbg(hw->wiphy,
2444                   "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2445                   ctx->def.chan->center_freq, ctx->def.width,
2446                   ctx->def.center_freq1, ctx->def.center_freq2);
2447         return 0;
2448 }
2449
2450 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2451                                           struct ieee80211_chanctx_conf *ctx)
2452 {
2453         wiphy_dbg(hw->wiphy,
2454                   "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2455                   ctx->def.chan->center_freq, ctx->def.width,
2456                   ctx->def.center_freq1, ctx->def.center_freq2);
2457         hwsim_check_chanctx_magic(ctx);
2458         hwsim_clear_chanctx_magic(ctx);
2459 }
2460
2461 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2462                                           struct ieee80211_chanctx_conf *ctx,
2463                                           u32 changed)
2464 {
2465         hwsim_check_chanctx_magic(ctx);
2466         wiphy_dbg(hw->wiphy,
2467                   "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2468                   ctx->def.chan->center_freq, ctx->def.width,
2469                   ctx->def.center_freq1, ctx->def.center_freq2);
2470 }
2471
2472 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2473                                              struct ieee80211_vif *vif,
2474                                              struct ieee80211_chanctx_conf *ctx)
2475 {
2476         hwsim_check_magic(vif);
2477         hwsim_check_chanctx_magic(ctx);
2478
2479         return 0;
2480 }
2481
2482 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2483                                                 struct ieee80211_vif *vif,
2484                                                 struct ieee80211_chanctx_conf *ctx)
2485 {
2486         hwsim_check_magic(vif);
2487         hwsim_check_chanctx_magic(ctx);
2488 }
2489
2490 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2491         "tx_pkts_nic",
2492         "tx_bytes_nic",
2493         "rx_pkts_nic",
2494         "rx_bytes_nic",
2495         "d_tx_dropped",
2496         "d_tx_failed",
2497         "d_ps_mode",
2498         "d_group",
2499 };
2500
2501 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2502
2503 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2504                                           struct ieee80211_vif *vif,
2505                                           u32 sset, u8 *data)
2506 {
2507         if (sset == ETH_SS_STATS)
2508                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2509                        sizeof(mac80211_hwsim_gstrings_stats));
2510 }
2511
2512 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2513                                             struct ieee80211_vif *vif, int sset)
2514 {
2515         if (sset == ETH_SS_STATS)
2516                 return MAC80211_HWSIM_SSTATS_LEN;
2517         return 0;
2518 }
2519
2520 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2521                                         struct ieee80211_vif *vif,
2522                                         struct ethtool_stats *stats, u64 *data)
2523 {
2524         struct mac80211_hwsim_data *ar = hw->priv;
2525         int i = 0;
2526
2527         data[i++] = ar->tx_pkts;
2528         data[i++] = ar->tx_bytes;
2529         data[i++] = ar->rx_pkts;
2530         data[i++] = ar->rx_bytes;
2531         data[i++] = ar->tx_dropped;
2532         data[i++] = ar->tx_failed;
2533         data[i++] = ar->ps;
2534         data[i++] = ar->group;
2535
2536         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2537 }
2538
2539 static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
2540 {
2541         return 1;
2542 }
2543
2544 #define HWSIM_COMMON_OPS                                        \
2545         .tx = mac80211_hwsim_tx,                                \
2546         .start = mac80211_hwsim_start,                          \
2547         .stop = mac80211_hwsim_stop,                            \
2548         .add_interface = mac80211_hwsim_add_interface,          \
2549         .change_interface = mac80211_hwsim_change_interface,    \
2550         .remove_interface = mac80211_hwsim_remove_interface,    \
2551         .config = mac80211_hwsim_config,                        \
2552         .configure_filter = mac80211_hwsim_configure_filter,    \
2553         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2554         .tx_last_beacon = mac80211_hwsim_tx_last_beacon,        \
2555         .sta_add = mac80211_hwsim_sta_add,                      \
2556         .sta_remove = mac80211_hwsim_sta_remove,                \
2557         .sta_notify = mac80211_hwsim_sta_notify,                \
2558         .set_tim = mac80211_hwsim_set_tim,                      \
2559         .conf_tx = mac80211_hwsim_conf_tx,                      \
2560         .get_survey = mac80211_hwsim_get_survey,                \
2561         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2562         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2563         .flush = mac80211_hwsim_flush,                          \
2564         .get_tsf = mac80211_hwsim_get_tsf,                      \
2565         .set_tsf = mac80211_hwsim_set_tsf,                      \
2566         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2567         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2568         .get_et_strings = mac80211_hwsim_get_et_strings,
2569
2570 static const struct ieee80211_ops mac80211_hwsim_ops = {
2571         HWSIM_COMMON_OPS
2572         .sw_scan_start = mac80211_hwsim_sw_scan,
2573         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2574 };
2575
2576 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2577         HWSIM_COMMON_OPS
2578         .hw_scan = mac80211_hwsim_hw_scan,
2579         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2580         .sw_scan_start = NULL,
2581         .sw_scan_complete = NULL,
2582         .remain_on_channel = mac80211_hwsim_roc,
2583         .cancel_remain_on_channel = mac80211_hwsim_croc,
2584         .add_chanctx = mac80211_hwsim_add_chanctx,
2585         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2586         .change_chanctx = mac80211_hwsim_change_chanctx,
2587         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2588         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2589 };
2590
2591 struct hwsim_new_radio_params {
2592         unsigned int channels;
2593         const char *reg_alpha2;
2594         const struct ieee80211_regdomain *regd;
2595         bool reg_strict;
2596         bool p2p_device;
2597         bool use_chanctx;
2598         bool destroy_on_close;
2599         const char *hwname;
2600         bool no_vif;
2601         const u8 *perm_addr;
2602         u32 iftypes;
2603         u32 *ciphers;
2604         u8 n_ciphers;
2605 };
2606
2607 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2608                                    struct genl_info *info)
2609 {
2610         if (info)
2611                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2612                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2613         else
2614                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2615                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2616 }
2617
2618 static int append_radio_msg(struct sk_buff *skb, int id,
2619                             struct hwsim_new_radio_params *param)
2620 {
2621         int ret;
2622
2623         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2624         if (ret < 0)
2625                 return ret;
2626
2627         if (param->channels) {
2628                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2629                 if (ret < 0)
2630                         return ret;
2631         }
2632
2633         if (param->reg_alpha2) {
2634                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2635                               param->reg_alpha2);
2636                 if (ret < 0)
2637                         return ret;
2638         }
2639
2640         if (param->regd) {
2641                 int i;
2642
2643                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2644                         if (hwsim_world_regdom_custom[i] != param->regd)
2645                                 continue;
2646
2647                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2648                         if (ret < 0)
2649                                 return ret;
2650                         break;
2651                 }
2652         }
2653
2654         if (param->reg_strict) {
2655                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2656                 if (ret < 0)
2657                         return ret;
2658         }
2659
2660         if (param->p2p_device) {
2661                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2662                 if (ret < 0)
2663                         return ret;
2664         }
2665
2666         if (param->use_chanctx) {
2667                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2668                 if (ret < 0)
2669                         return ret;
2670         }
2671
2672         if (param->hwname) {
2673                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2674                               strlen(param->hwname), param->hwname);
2675                 if (ret < 0)
2676                         return ret;
2677         }
2678
2679         return 0;
2680 }
2681
2682 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2683                                   struct hwsim_new_radio_params *param)
2684 {
2685         struct sk_buff *mcast_skb;
2686         void *data;
2687
2688         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2689         if (!mcast_skb)
2690                 return;
2691
2692         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2693                            HWSIM_CMD_NEW_RADIO);
2694         if (!data)
2695                 goto out_err;
2696
2697         if (append_radio_msg(mcast_skb, id, param) < 0)
2698                 goto out_err;
2699
2700         genlmsg_end(mcast_skb, data);
2701
2702         hwsim_mcast_config_msg(mcast_skb, info);
2703         return;
2704
2705 out_err:
2706         nlmsg_free(mcast_skb);
2707 }
2708
2709 static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2710         {
2711                 /* TODO: should we support other types, e.g., P2P?*/
2712                 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2713                               BIT(NL80211_IFTYPE_AP),
2714                 .he_cap = {
2715                         .has_he = true,
2716                         .he_cap_elem = {
2717                                 .mac_cap_info[0] =
2718                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2719                                 .mac_cap_info[1] =
2720                                         IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2721                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2722                                 .mac_cap_info[2] =
2723                                         IEEE80211_HE_MAC_CAP2_BSR |
2724                                         IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2725                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2726                                 .mac_cap_info[3] =
2727                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2728                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2729                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2730                                 .phy_cap_info[1] =
2731                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2732                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2733                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2734                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2735                                 .phy_cap_info[2] =
2736                                         IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2737                                         IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2738                                         IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2739                                         IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2740                                         IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2741
2742                                 /* Leave all the other PHY capability bytes
2743                                  * unset, as DCM, beam forming, RU and PPE
2744                                  * threshold information are not supported
2745                                  */
2746                         },
2747                         .he_mcs_nss_supp = {
2748                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2749                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2750                                 .rx_mcs_160 = cpu_to_le16(0xffff),
2751                                 .tx_mcs_160 = cpu_to_le16(0xffff),
2752                                 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2753                                 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2754                         },
2755                 },
2756         },
2757 #ifdef CONFIG_MAC80211_MESH
2758         {
2759                 /* TODO: should we support other types, e.g., IBSS?*/
2760                 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2761                 .he_cap = {
2762                         .has_he = true,
2763                         .he_cap_elem = {
2764                                 .mac_cap_info[0] =
2765                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2766                                 .mac_cap_info[1] =
2767                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2768                                 .mac_cap_info[2] =
2769                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2770                                 .mac_cap_info[3] =
2771                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2772                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2773                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2774                                 .phy_cap_info[1] =
2775                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2776                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2777                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2778                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2779                                 .phy_cap_info[2] = 0,
2780
2781                                 /* Leave all the other PHY capability bytes
2782                                  * unset, as DCM, beam forming, RU and PPE
2783                                  * threshold information are not supported
2784                                  */
2785                         },
2786                         .he_mcs_nss_supp = {
2787                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2788                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2789                                 .rx_mcs_160 = cpu_to_le16(0xffff),
2790                                 .tx_mcs_160 = cpu_to_le16(0xffff),
2791                                 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2792                                 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2793                         },
2794                 },
2795         },
2796 #endif
2797 };
2798
2799 static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2800         {
2801                 /* TODO: should we support other types, e.g., P2P?*/
2802                 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2803                               BIT(NL80211_IFTYPE_AP),
2804                 .he_cap = {
2805                         .has_he = true,
2806                         .he_cap_elem = {
2807                                 .mac_cap_info[0] =
2808                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2809                                 .mac_cap_info[1] =
2810                                         IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2811                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2812                                 .mac_cap_info[2] =
2813                                         IEEE80211_HE_MAC_CAP2_BSR |
2814                                         IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2815                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2816                                 .mac_cap_info[3] =
2817                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2818                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2819                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2820                                 .phy_cap_info[0] =
2821                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2822                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2823                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2824                                 .phy_cap_info[1] =
2825                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2826                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2827                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2828                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2829                                 .phy_cap_info[2] =
2830                                         IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2831                                         IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2832                                         IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2833                                         IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2834                                         IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2835
2836                                 /* Leave all the other PHY capability bytes
2837                                  * unset, as DCM, beam forming, RU and PPE
2838                                  * threshold information are not supported
2839                                  */
2840                         },
2841                         .he_mcs_nss_supp = {
2842                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2843                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2844                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
2845                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
2846                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2847                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2848                         },
2849                 },
2850         },
2851 #ifdef CONFIG_MAC80211_MESH
2852         {
2853                 /* TODO: should we support other types, e.g., IBSS?*/
2854                 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2855                 .he_cap = {
2856                         .has_he = true,
2857                         .he_cap_elem = {
2858                                 .mac_cap_info[0] =
2859                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2860                                 .mac_cap_info[1] =
2861                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2862                                 .mac_cap_info[2] =
2863                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2864                                 .mac_cap_info[3] =
2865                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2866                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2867                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2868                                 .phy_cap_info[0] =
2869                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2870                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2871                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2872                                 .phy_cap_info[1] =
2873                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2874                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2875                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2876                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2877                                 .phy_cap_info[2] = 0,
2878
2879                                 /* Leave all the other PHY capability bytes
2880                                  * unset, as DCM, beam forming, RU and PPE
2881                                  * threshold information are not supported
2882                                  */
2883                         },
2884                         .he_mcs_nss_supp = {
2885                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2886                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2887                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
2888                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
2889                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2890                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2891                         },
2892                 },
2893         },
2894 #endif
2895 };
2896
2897 static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2898 {
2899         u16 n_iftype_data;
2900
2901         if (sband->band == NL80211_BAND_2GHZ) {
2902                 n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2903                 sband->iftype_data =
2904                         (struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2905         } else if (sband->band == NL80211_BAND_5GHZ) {
2906                 n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
2907                 sband->iftype_data =
2908                         (struct ieee80211_sband_iftype_data *)he_capa_5ghz;
2909         } else {
2910                 return;
2911         }
2912
2913         sband->n_iftype_data = n_iftype_data;
2914 }
2915
2916 #ifdef CONFIG_MAC80211_MESH
2917 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2918 #else
2919 #define HWSIM_MESH_BIT 0
2920 #endif
2921
2922 #define HWSIM_DEFAULT_IF_LIMIT \
2923         (BIT(NL80211_IFTYPE_STATION) | \
2924          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2925          BIT(NL80211_IFTYPE_AP) | \
2926          BIT(NL80211_IFTYPE_P2P_GO) | \
2927          HWSIM_MESH_BIT)
2928
2929 #define HWSIM_IFTYPE_SUPPORT_MASK \
2930         (BIT(NL80211_IFTYPE_STATION) | \
2931          BIT(NL80211_IFTYPE_AP) | \
2932          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2933          BIT(NL80211_IFTYPE_P2P_GO) | \
2934          BIT(NL80211_IFTYPE_ADHOC) | \
2935          BIT(NL80211_IFTYPE_MESH_POINT) | \
2936          BIT(NL80211_IFTYPE_OCB))
2937
2938 static int mac80211_hwsim_new_radio(struct genl_info *info,
2939                                     struct hwsim_new_radio_params *param)
2940 {
2941         int err;
2942         u8 addr[ETH_ALEN];
2943         struct mac80211_hwsim_data *data;
2944         struct ieee80211_hw *hw;
2945         enum nl80211_band band;
2946         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2947         struct net *net;
2948         int idx, i;
2949         int n_limits = 0;
2950
2951         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2952                 return -EINVAL;
2953
2954         spin_lock_bh(&hwsim_radio_lock);
2955         idx = hwsim_radio_idx++;
2956         spin_unlock_bh(&hwsim_radio_lock);
2957
2958         if (param->use_chanctx)
2959                 ops = &mac80211_hwsim_mchan_ops;
2960         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2961         if (!hw) {
2962                 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2963                 err = -ENOMEM;
2964                 goto failed;
2965         }
2966
2967         /* ieee80211_alloc_hw_nm may have used a default name */
2968         param->hwname = wiphy_name(hw->wiphy);
2969
2970         if (info)
2971                 net = genl_info_net(info);
2972         else
2973                 net = &init_net;
2974         wiphy_net_set(hw->wiphy, net);
2975
2976         data = hw->priv;
2977         data->hw = hw;
2978
2979         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2980         if (IS_ERR(data->dev)) {
2981                 printk(KERN_DEBUG
2982                        "mac80211_hwsim: device_create failed (%ld)\n",
2983                        PTR_ERR(data->dev));
2984                 err = -ENOMEM;
2985                 goto failed_drvdata;
2986         }
2987         data->dev->driver = &mac80211_hwsim_driver.driver;
2988         err = device_bind_driver(data->dev);
2989         if (err != 0) {
2990                 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2991                        err);
2992                 goto failed_bind;
2993         }
2994
2995         skb_queue_head_init(&data->pending);
2996
2997         SET_IEEE80211_DEV(hw, data->dev);
2998         if (!param->perm_addr) {
2999                 eth_zero_addr(addr);
3000                 addr[0] = 0x02;
3001                 addr[3] = idx >> 8;
3002                 addr[4] = idx;
3003                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
3004                 /* Why need here second address ? */
3005                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
3006                 data->addresses[1].addr[0] |= 0x40;
3007                 hw->wiphy->n_addresses = 2;
3008                 hw->wiphy->addresses = data->addresses;
3009                 /* possible address clash is checked at hash table insertion */
3010         } else {
3011                 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
3012                 /* compatibility with automatically generated mac addr */
3013                 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
3014                 hw->wiphy->n_addresses = 2;
3015                 hw->wiphy->addresses = data->addresses;
3016         }
3017
3018         data->channels = param->channels;
3019         data->use_chanctx = param->use_chanctx;
3020         data->idx = idx;
3021         data->destroy_on_close = param->destroy_on_close;
3022         if (info)
3023                 data->portid = info->snd_portid;
3024
3025         /* setup interface limits, only on interface types we support */
3026         if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
3027                 data->if_limits[n_limits].max = 1;
3028                 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
3029                 n_limits++;
3030         }
3031
3032         if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
3033                 data->if_limits[n_limits].max = 2048;
3034                 /*
3035                  * For this case, we may only support a subset of
3036                  * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
3037                  * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
3038                  */
3039                 data->if_limits[n_limits].types =
3040                                         HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
3041                 n_limits++;
3042         }
3043
3044         if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3045                 data->if_limits[n_limits].max = 1;
3046                 data->if_limits[n_limits].types =
3047                                                 BIT(NL80211_IFTYPE_P2P_DEVICE);
3048                 n_limits++;
3049         }
3050
3051         if (data->use_chanctx) {
3052                 hw->wiphy->max_scan_ssids = 255;
3053                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
3054                 hw->wiphy->max_remain_on_channel_duration = 1000;
3055                 data->if_combination.radar_detect_widths = 0;
3056                 data->if_combination.num_different_channels = data->channels;
3057         } else {
3058                 data->if_combination.num_different_channels = 1;
3059                 data->if_combination.radar_detect_widths =
3060                                         BIT(NL80211_CHAN_WIDTH_5) |
3061                                         BIT(NL80211_CHAN_WIDTH_10) |
3062                                         BIT(NL80211_CHAN_WIDTH_20_NOHT) |
3063                                         BIT(NL80211_CHAN_WIDTH_20) |
3064                                         BIT(NL80211_CHAN_WIDTH_40) |
3065                                         BIT(NL80211_CHAN_WIDTH_80) |
3066                                         BIT(NL80211_CHAN_WIDTH_160);
3067         }
3068
3069         if (!n_limits) {
3070                 err = -EINVAL;
3071                 goto failed_hw;
3072         }
3073
3074         data->if_combination.max_interfaces = 0;
3075         for (i = 0; i < n_limits; i++)
3076                 data->if_combination.max_interfaces +=
3077                         data->if_limits[i].max;
3078
3079         data->if_combination.n_limits = n_limits;
3080         data->if_combination.limits = data->if_limits;
3081
3082         /*
3083          * If we actually were asked to support combinations,
3084          * advertise them - if there's only a single thing like
3085          * only IBSS then don't advertise it as combinations.
3086          */
3087         if (data->if_combination.max_interfaces > 1) {
3088                 hw->wiphy->iface_combinations = &data->if_combination;
3089                 hw->wiphy->n_iface_combinations = 1;
3090         }
3091
3092         if (param->ciphers) {
3093                 memcpy(data->ciphers, param->ciphers,
3094                        param->n_ciphers * sizeof(u32));
3095                 hw->wiphy->cipher_suites = data->ciphers;
3096                 hw->wiphy->n_cipher_suites = param->n_ciphers;
3097         }
3098
3099         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
3100         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
3101         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
3102
3103         hw->queues = 5;
3104         hw->offchannel_tx_hw_queue = 4;
3105
3106         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
3107         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
3108         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
3109         ieee80211_hw_set(hw, QUEUE_CONTROL);
3110         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
3111         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
3112         ieee80211_hw_set(hw, MFP_CAPABLE);
3113         ieee80211_hw_set(hw, SIGNAL_DBM);
3114         ieee80211_hw_set(hw, SUPPORTS_PS);
3115         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
3116         ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
3117         ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
3118         ieee80211_hw_set(hw, TDLS_WIDER_BW);
3119         if (rctbl)
3120                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
3121         ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
3122
3123         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3124         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
3125                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3126                             WIPHY_FLAG_AP_UAPSD |
3127                             WIPHY_FLAG_SUPPORTS_5_10_MHZ |
3128                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
3129         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
3130                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
3131                                NL80211_FEATURE_STATIC_SMPS |
3132                                NL80211_FEATURE_DYNAMIC_SMPS |
3133                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
3134         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
3135         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
3136         wiphy_ext_feature_set(hw->wiphy,
3137                               NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
3138         wiphy_ext_feature_set(hw->wiphy,
3139                               NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
3140
3141         hw->wiphy->interface_modes = param->iftypes;
3142
3143         /* ask mac80211 to reserve space for magic */
3144         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
3145         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
3146         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
3147
3148         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
3149                 sizeof(hwsim_channels_2ghz));
3150         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
3151                 sizeof(hwsim_channels_5ghz));
3152         memcpy(data->channels_s1g, hwsim_channels_s1g,
3153                sizeof(hwsim_channels_s1g));
3154         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
3155
3156         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3157                 struct ieee80211_supported_band *sband = &data->bands[band];
3158
3159                 sband->band = band;
3160
3161                 switch (band) {
3162                 case NL80211_BAND_2GHZ:
3163                         sband->channels = data->channels_2ghz;
3164                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
3165                         sband->bitrates = data->rates;
3166                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
3167                         break;
3168                 case NL80211_BAND_5GHZ:
3169                         sband->channels = data->channels_5ghz;
3170                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
3171                         sband->bitrates = data->rates + 4;
3172                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3173
3174                         sband->vht_cap.vht_supported = true;
3175                         sband->vht_cap.cap =
3176                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
3177                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
3178                                 IEEE80211_VHT_CAP_RXLDPC |
3179                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
3180                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
3181                                 IEEE80211_VHT_CAP_TXSTBC |
3182                                 IEEE80211_VHT_CAP_RXSTBC_4 |
3183                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
3184                         sband->vht_cap.vht_mcs.rx_mcs_map =
3185                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
3186                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
3187                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
3188                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
3189                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
3190                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
3191                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
3192                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
3193                         sband->vht_cap.vht_mcs.tx_mcs_map =
3194                                 sband->vht_cap.vht_mcs.rx_mcs_map;
3195                         break;
3196                 case NL80211_BAND_S1GHZ:
3197                         memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
3198                                sizeof(sband->s1g_cap));
3199                         sband->channels = data->channels_s1g;
3200                         sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
3201                         break;
3202                 default:
3203                         continue;
3204                 }
3205
3206                 sband->ht_cap.ht_supported = true;
3207                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
3208                                     IEEE80211_HT_CAP_GRN_FLD |
3209                                     IEEE80211_HT_CAP_SGI_20 |
3210                                     IEEE80211_HT_CAP_SGI_40 |
3211                                     IEEE80211_HT_CAP_DSSSCCK40;
3212                 sband->ht_cap.ampdu_factor = 0x3;
3213                 sband->ht_cap.ampdu_density = 0x6;
3214                 memset(&sband->ht_cap.mcs, 0,
3215                        sizeof(sband->ht_cap.mcs));
3216                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
3217                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
3218                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3219
3220                 mac80211_hwsim_he_capab(sband);
3221
3222                 hw->wiphy->bands[band] = sband;
3223         }
3224
3225         /* By default all radios belong to the first group */
3226         data->group = 1;
3227         mutex_init(&data->mutex);
3228
3229         data->netgroup = hwsim_net_get_netgroup(net);
3230         data->wmediumd = hwsim_net_get_wmediumd(net);
3231
3232         /* Enable frame retransmissions for lossy channels */
3233         hw->max_rates = 4;
3234         hw->max_rate_tries = 11;
3235
3236         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3237         hw->wiphy->n_vendor_commands =
3238                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3239         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3240         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3241
3242         if (param->reg_strict)
3243                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3244         if (param->regd) {
3245                 data->regd = param->regd;
3246                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3247                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3248                 /* give the regulatory workqueue a chance to run */
3249                 schedule_timeout_interruptible(1);
3250         }
3251
3252         if (param->no_vif)
3253                 ieee80211_hw_set(hw, NO_AUTO_VIF);
3254
3255         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3256
3257         hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3258                      HRTIMER_MODE_ABS_SOFT);
3259         data->beacon_timer.function = mac80211_hwsim_beacon;
3260
3261         err = ieee80211_register_hw(hw);
3262         if (err < 0) {
3263                 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3264                        err);
3265                 goto failed_hw;
3266         }
3267
3268         wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3269
3270         if (param->reg_alpha2) {
3271                 data->alpha2[0] = param->reg_alpha2[0];
3272                 data->alpha2[1] = param->reg_alpha2[1];
3273                 regulatory_hint(hw->wiphy, param->reg_alpha2);
3274         }
3275
3276         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3277         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3278         debugfs_create_file("group", 0666, data->debugfs, data,
3279                             &hwsim_fops_group);
3280         if (!data->use_chanctx)
3281                 debugfs_create_file("dfs_simulate_radar", 0222,
3282                                     data->debugfs,
3283                                     data, &hwsim_simulate_radar);
3284
3285         spin_lock_bh(&hwsim_radio_lock);
3286         err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3287                                      hwsim_rht_params);
3288         if (err < 0) {
3289                 if (info) {
3290                         GENL_SET_ERR_MSG(info, "perm addr already present");
3291                         NL_SET_BAD_ATTR(info->extack,
3292                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
3293                 }
3294                 spin_unlock_bh(&hwsim_radio_lock);
3295                 goto failed_final_insert;
3296         }
3297
3298         list_add_tail(&data->list, &hwsim_radios);
3299         hwsim_radios_generation++;
3300         spin_unlock_bh(&hwsim_radio_lock);
3301
3302         hwsim_mcast_new_radio(idx, info, param);
3303
3304         return idx;
3305
3306 failed_final_insert:
3307         debugfs_remove_recursive(data->debugfs);
3308         ieee80211_unregister_hw(data->hw);
3309 failed_hw:
3310         device_release_driver(data->dev);
3311 failed_bind:
3312         device_unregister(data->dev);
3313 failed_drvdata:
3314         ieee80211_free_hw(hw);
3315 failed:
3316         return err;
3317 }
3318
3319 static void hwsim_mcast_del_radio(int id, const char *hwname,
3320                                   struct genl_info *info)
3321 {
3322         struct sk_buff *skb;
3323         void *data;
3324         int ret;
3325
3326         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3327         if (!skb)
3328                 return;
3329
3330         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3331                            HWSIM_CMD_DEL_RADIO);
3332         if (!data)
3333                 goto error;
3334
3335         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3336         if (ret < 0)
3337                 goto error;
3338
3339         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3340                       hwname);
3341         if (ret < 0)
3342                 goto error;
3343
3344         genlmsg_end(skb, data);
3345
3346         hwsim_mcast_config_msg(skb, info);
3347
3348         return;
3349
3350 error:
3351         nlmsg_free(skb);
3352 }
3353
3354 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3355                                      const char *hwname,
3356                                      struct genl_info *info)
3357 {
3358         hwsim_mcast_del_radio(data->idx, hwname, info);
3359         debugfs_remove_recursive(data->debugfs);
3360         ieee80211_unregister_hw(data->hw);
3361         device_release_driver(data->dev);
3362         device_unregister(data->dev);
3363         ieee80211_free_hw(data->hw);
3364 }
3365
3366 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3367                                     struct mac80211_hwsim_data *data,
3368                                     u32 portid, u32 seq,
3369                                     struct netlink_callback *cb, int flags)
3370 {
3371         void *hdr;
3372         struct hwsim_new_radio_params param = { };
3373         int res = -EMSGSIZE;
3374
3375         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3376                           HWSIM_CMD_GET_RADIO);
3377         if (!hdr)
3378                 return -EMSGSIZE;
3379
3380         if (cb)
3381                 genl_dump_check_consistent(cb, hdr);
3382
3383         if (data->alpha2[0] && data->alpha2[1])
3384                 param.reg_alpha2 = data->alpha2;
3385
3386         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3387                                         REGULATORY_STRICT_REG);
3388         param.p2p_device = !!(data->hw->wiphy->interface_modes &
3389                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
3390         param.use_chanctx = data->use_chanctx;
3391         param.regd = data->regd;
3392         param.channels = data->channels;
3393         param.hwname = wiphy_name(data->hw->wiphy);
3394
3395         res = append_radio_msg(skb, data->idx, &param);
3396         if (res < 0)
3397                 goto out_err;
3398
3399         genlmsg_end(skb, hdr);
3400         return 0;
3401
3402 out_err:
3403         genlmsg_cancel(skb, hdr);
3404         return res;
3405 }
3406
3407 static void mac80211_hwsim_free(void)
3408 {
3409         struct mac80211_hwsim_data *data;
3410
3411         spin_lock_bh(&hwsim_radio_lock);
3412         while ((data = list_first_entry_or_null(&hwsim_radios,
3413                                                 struct mac80211_hwsim_data,
3414                                                 list))) {
3415                 list_del(&data->list);
3416                 spin_unlock_bh(&hwsim_radio_lock);
3417                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3418                                          NULL);
3419                 spin_lock_bh(&hwsim_radio_lock);
3420         }
3421         spin_unlock_bh(&hwsim_radio_lock);
3422         class_destroy(hwsim_class);
3423 }
3424
3425 static const struct net_device_ops hwsim_netdev_ops = {
3426         .ndo_start_xmit         = hwsim_mon_xmit,
3427         .ndo_set_mac_address    = eth_mac_addr,
3428         .ndo_validate_addr      = eth_validate_addr,
3429 };
3430
3431 static void hwsim_mon_setup(struct net_device *dev)
3432 {
3433         dev->netdev_ops = &hwsim_netdev_ops;
3434         dev->needs_free_netdev = true;
3435         ether_setup(dev);
3436         dev->priv_flags |= IFF_NO_QUEUE;
3437         dev->type = ARPHRD_IEEE80211_RADIOTAP;
3438         eth_zero_addr(dev->dev_addr);
3439         dev->dev_addr[0] = 0x12;
3440 }
3441
3442 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3443 {
3444         return rhashtable_lookup_fast(&hwsim_radios_rht,
3445                                       addr,
3446                                       hwsim_rht_params);
3447 }
3448
3449 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3450 {
3451         struct mac80211_hwsim_data *data;
3452
3453         hwsim_net_set_wmediumd(net, portid);
3454
3455         spin_lock_bh(&hwsim_radio_lock);
3456         list_for_each_entry(data, &hwsim_radios, list) {
3457                 if (data->netgroup == hwsim_net_get_netgroup(net))
3458                         data->wmediumd = portid;
3459         }
3460         spin_unlock_bh(&hwsim_radio_lock);
3461 }
3462
3463 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3464                                            struct genl_info *info)
3465 {
3466
3467         struct ieee80211_hdr *hdr;
3468         struct mac80211_hwsim_data *data2;
3469         struct ieee80211_tx_info *txi;
3470         struct hwsim_tx_rate *tx_attempts;
3471         u64 ret_skb_cookie;
3472         struct sk_buff *skb, *tmp;
3473         const u8 *src;
3474         unsigned int hwsim_flags;
3475         int i;
3476         bool found = false;
3477
3478         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3479             !info->attrs[HWSIM_ATTR_FLAGS] ||
3480             !info->attrs[HWSIM_ATTR_COOKIE] ||
3481             !info->attrs[HWSIM_ATTR_SIGNAL] ||
3482             !info->attrs[HWSIM_ATTR_TX_INFO])
3483                 goto out;
3484
3485         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3486         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3487         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3488
3489         data2 = get_hwsim_data_ref_from_addr(src);
3490         if (!data2)
3491                 goto out;
3492
3493         if (!hwsim_virtio_enabled) {
3494                 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3495                     data2->netgroup)
3496                         goto out;
3497
3498                 if (info->snd_portid != data2->wmediumd)
3499                         goto out;
3500         }
3501
3502         /* look for the skb matching the cookie passed back from user */
3503         skb_queue_walk_safe(&data2->pending, skb, tmp) {
3504                 u64 skb_cookie;
3505
3506                 txi = IEEE80211_SKB_CB(skb);
3507                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3508
3509                 if (skb_cookie == ret_skb_cookie) {
3510                         skb_unlink(skb, &data2->pending);
3511                         found = true;
3512                         break;
3513                 }
3514         }
3515
3516         /* not found */
3517         if (!found)
3518                 goto out;
3519
3520         /* Tx info received because the frame was broadcasted on user space,
3521          so we get all the necessary info: tx attempts and skb control buff */
3522
3523         tx_attempts = (struct hwsim_tx_rate *)nla_data(
3524                        info->attrs[HWSIM_ATTR_TX_INFO]);
3525
3526         /* now send back TX status */
3527         txi = IEEE80211_SKB_CB(skb);
3528
3529         ieee80211_tx_info_clear_status(txi);
3530
3531         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3532                 txi->status.rates[i].idx = tx_attempts[i].idx;
3533                 txi->status.rates[i].count = tx_attempts[i].count;
3534         }
3535
3536         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3537
3538         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3539            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3540                 if (skb->len >= 16) {
3541                         hdr = (struct ieee80211_hdr *) skb->data;
3542                         mac80211_hwsim_monitor_ack(data2->channel,
3543                                                    hdr->addr2);
3544                 }
3545                 txi->flags |= IEEE80211_TX_STAT_ACK;
3546         }
3547         ieee80211_tx_status_irqsafe(data2->hw, skb);
3548         return 0;
3549 out:
3550         return -EINVAL;
3551
3552 }
3553
3554 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3555                                           struct genl_info *info)
3556 {
3557         struct mac80211_hwsim_data *data2;
3558         struct ieee80211_rx_status rx_status;
3559         struct ieee80211_hdr *hdr;
3560         const u8 *dst;
3561         int frame_data_len;
3562         void *frame_data;
3563         struct sk_buff *skb = NULL;
3564
3565         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3566             !info->attrs[HWSIM_ATTR_FRAME] ||
3567             !info->attrs[HWSIM_ATTR_RX_RATE] ||
3568             !info->attrs[HWSIM_ATTR_SIGNAL])
3569                 goto out;
3570
3571         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3572         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3573         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3574
3575         /* Allocate new skb here */
3576         skb = alloc_skb(frame_data_len, GFP_KERNEL);
3577         if (skb == NULL)
3578                 goto err;
3579
3580         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3581                 goto err;
3582
3583         /* Copy the data */
3584         skb_put_data(skb, frame_data, frame_data_len);
3585
3586         data2 = get_hwsim_data_ref_from_addr(dst);
3587         if (!data2)
3588                 goto out;
3589
3590         if (!hwsim_virtio_enabled) {
3591                 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3592                     data2->netgroup)
3593                         goto out;
3594
3595                 if (info->snd_portid != data2->wmediumd)
3596                         goto out;
3597         }
3598
3599         /* check if radio is configured properly */
3600
3601         if (data2->idle || !data2->started)
3602                 goto out;
3603
3604         /* A frame is received from user space */
3605         memset(&rx_status, 0, sizeof(rx_status));
3606         if (info->attrs[HWSIM_ATTR_FREQ]) {
3607                 /* throw away off-channel packets, but allow both the temporary
3608                  * ("hw" scan/remain-on-channel) and regular channel, since the
3609                  * internal datapath also allows this
3610                  */
3611                 mutex_lock(&data2->mutex);
3612                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3613
3614                 if (rx_status.freq != data2->channel->center_freq &&
3615                     (!data2->tmp_chan ||
3616                      rx_status.freq != data2->tmp_chan->center_freq)) {
3617                         mutex_unlock(&data2->mutex);
3618                         goto out;
3619                 }
3620                 mutex_unlock(&data2->mutex);
3621         } else {
3622                 rx_status.freq = data2->channel->center_freq;
3623         }
3624
3625         rx_status.band = data2->channel->band;
3626         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3627         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3628
3629         hdr = (void *)skb->data;
3630
3631         if (ieee80211_is_beacon(hdr->frame_control) ||
3632             ieee80211_is_probe_resp(hdr->frame_control))
3633                 rx_status.boottime_ns = ktime_get_boottime_ns();
3634
3635         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3636         data2->rx_pkts++;
3637         data2->rx_bytes += skb->len;
3638         ieee80211_rx_irqsafe(data2->hw, skb);
3639
3640         return 0;
3641 err:
3642         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3643 out:
3644         dev_kfree_skb(skb);
3645         return -EINVAL;
3646 }
3647
3648 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3649                                       struct genl_info *info)
3650 {
3651         struct net *net = genl_info_net(info);
3652         struct mac80211_hwsim_data *data;
3653         int chans = 1;
3654
3655         spin_lock_bh(&hwsim_radio_lock);
3656         list_for_each_entry(data, &hwsim_radios, list)
3657                 chans = max(chans, data->channels);
3658         spin_unlock_bh(&hwsim_radio_lock);
3659
3660         /* In the future we should revise the userspace API and allow it
3661          * to set a flag that it does support multi-channel, then we can
3662          * let this pass conditionally on the flag.
3663          * For current userspace, prohibit it since it won't work right.
3664          */
3665         if (chans > 1)
3666                 return -EOPNOTSUPP;
3667
3668         if (hwsim_net_get_wmediumd(net))
3669                 return -EBUSY;
3670
3671         hwsim_register_wmediumd(net, info->snd_portid);
3672
3673         pr_debug("mac80211_hwsim: received a REGISTER, "
3674                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3675
3676         return 0;
3677 }
3678
3679 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3680 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3681 {
3682         int i;
3683
3684         for (i = 0; i < n_ciphers; i++) {
3685                 int j;
3686                 int found = 0;
3687
3688                 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3689                         if (ciphers[i] == hwsim_ciphers[j]) {
3690                                 found = 1;
3691                                 break;
3692                         }
3693                 }
3694
3695                 if (!found)
3696                         return false;
3697         }
3698
3699         return true;
3700 }
3701
3702 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3703 {
3704         struct hwsim_new_radio_params param = { 0 };
3705         const char *hwname = NULL;
3706         int ret;
3707
3708         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3709         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3710         param.channels = channels;
3711         param.destroy_on_close =
3712                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3713
3714         if (info->attrs[HWSIM_ATTR_CHANNELS])
3715                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3716
3717         if (param.channels < 1) {
3718                 GENL_SET_ERR_MSG(info, "must have at least one channel");
3719                 return -EINVAL;
3720         }
3721
3722         if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3723                 GENL_SET_ERR_MSG(info, "too many channels specified");
3724                 return -EINVAL;
3725         }
3726
3727         if (info->attrs[HWSIM_ATTR_NO_VIF])
3728                 param.no_vif = true;
3729
3730         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3731                 param.use_chanctx = true;
3732         else
3733                 param.use_chanctx = (param.channels > 1);
3734
3735         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3736                 param.reg_alpha2 =
3737                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3738
3739         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3740                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3741
3742                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3743                         return -EINVAL;
3744
3745                 idx = array_index_nospec(idx,
3746                                          ARRAY_SIZE(hwsim_world_regdom_custom));
3747                 param.regd = hwsim_world_regdom_custom[idx];
3748         }
3749
3750         if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3751                 if (!is_valid_ether_addr(
3752                                 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3753                         GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3754                         NL_SET_BAD_ATTR(info->extack,
3755                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
3756                         return -EINVAL;
3757                 }
3758
3759                 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3760         }
3761
3762         if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3763                 param.iftypes =
3764                         nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3765
3766                 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3767                         NL_SET_ERR_MSG_ATTR(info->extack,
3768                                             info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3769                                             "cannot support more iftypes than kernel");
3770                         return -EINVAL;
3771                 }
3772         } else {
3773                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3774         }
3775
3776         /* ensure both flag and iftype support is honored */
3777         if (param.p2p_device ||
3778             param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3779                 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3780                 param.p2p_device = true;
3781         }
3782
3783         if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3784                 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3785
3786                 param.ciphers =
3787                         nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3788
3789                 if (len % sizeof(u32)) {
3790                         NL_SET_ERR_MSG_ATTR(info->extack,
3791                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3792                                             "bad cipher list length");
3793                         return -EINVAL;
3794                 }
3795
3796                 param.n_ciphers = len / sizeof(u32);
3797
3798                 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3799                         NL_SET_ERR_MSG_ATTR(info->extack,
3800                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3801                                             "too many ciphers specified");
3802                         return -EINVAL;
3803                 }
3804
3805                 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3806                         NL_SET_ERR_MSG_ATTR(info->extack,
3807                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3808                                             "unsupported ciphers specified");
3809                         return -EINVAL;
3810                 }
3811         }
3812
3813         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3814                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3815                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3816                                   GFP_KERNEL);
3817                 if (!hwname)
3818                         return -ENOMEM;
3819                 param.hwname = hwname;
3820         }
3821
3822         ret = mac80211_hwsim_new_radio(info, &param);
3823         kfree(hwname);
3824         return ret;
3825 }
3826
3827 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3828 {
3829         struct mac80211_hwsim_data *data;
3830         s64 idx = -1;
3831         const char *hwname = NULL;
3832
3833         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3834                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3835         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3836                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3837                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3838                                   GFP_KERNEL);
3839                 if (!hwname)
3840                         return -ENOMEM;
3841         } else
3842                 return -EINVAL;
3843
3844         spin_lock_bh(&hwsim_radio_lock);
3845         list_for_each_entry(data, &hwsim_radios, list) {
3846                 if (idx >= 0) {
3847                         if (data->idx != idx)
3848                                 continue;
3849                 } else {
3850                         if (!hwname ||
3851                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3852                                 continue;
3853                 }
3854
3855                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3856                         continue;
3857
3858                 list_del(&data->list);
3859                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3860                                        hwsim_rht_params);
3861                 hwsim_radios_generation++;
3862                 spin_unlock_bh(&hwsim_radio_lock);
3863                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3864                                          info);
3865                 kfree(hwname);
3866                 return 0;
3867         }
3868         spin_unlock_bh(&hwsim_radio_lock);
3869
3870         kfree(hwname);
3871         return -ENODEV;
3872 }
3873
3874 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3875 {
3876         struct mac80211_hwsim_data *data;
3877         struct sk_buff *skb;
3878         int idx, res = -ENODEV;
3879
3880         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3881                 return -EINVAL;
3882         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3883
3884         spin_lock_bh(&hwsim_radio_lock);
3885         list_for_each_entry(data, &hwsim_radios, list) {
3886                 if (data->idx != idx)
3887                         continue;
3888
3889                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3890                         continue;
3891
3892                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3893                 if (!skb) {
3894                         res = -ENOMEM;
3895                         goto out_err;
3896                 }
3897
3898                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3899                                                info->snd_seq, NULL, 0);
3900                 if (res < 0) {
3901                         nlmsg_free(skb);
3902                         goto out_err;
3903                 }
3904
3905                 res = genlmsg_reply(skb, info);
3906                 break;
3907         }
3908
3909 out_err:
3910         spin_unlock_bh(&hwsim_radio_lock);
3911
3912         return res;
3913 }
3914
3915 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3916                                struct netlink_callback *cb)
3917 {
3918         int last_idx = cb->args[0] - 1;
3919         struct mac80211_hwsim_data *data = NULL;
3920         int res = 0;
3921         void *hdr;
3922
3923         spin_lock_bh(&hwsim_radio_lock);
3924         cb->seq = hwsim_radios_generation;
3925
3926         if (last_idx >= hwsim_radio_idx-1)
3927                 goto done;
3928
3929         list_for_each_entry(data, &hwsim_radios, list) {
3930                 if (data->idx <= last_idx)
3931                         continue;
3932
3933                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3934                         continue;
3935
3936                 res = mac80211_hwsim_get_radio(skb, data,
3937                                                NETLINK_CB(cb->skb).portid,
3938                                                cb->nlh->nlmsg_seq, cb,
3939                                                NLM_F_MULTI);
3940                 if (res < 0)
3941                         break;
3942
3943                 last_idx = data->idx;
3944         }
3945
3946         cb->args[0] = last_idx + 1;
3947
3948         /* list changed, but no new element sent, set interrupted flag */
3949         if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3950                 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3951                                   cb->nlh->nlmsg_seq, &hwsim_genl_family,
3952                                   NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3953                 if (hdr) {
3954                         genl_dump_check_consistent(cb, hdr);
3955                         genlmsg_end(skb, hdr);
3956                 } else {
3957                         res = -EMSGSIZE;
3958                 }
3959         }
3960
3961 done:
3962         spin_unlock_bh(&hwsim_radio_lock);
3963         return res ?: skb->len;
3964 }
3965
3966 /* Generic Netlink operations array */
3967 static const struct genl_small_ops hwsim_ops[] = {
3968         {
3969                 .cmd = HWSIM_CMD_REGISTER,
3970                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3971                 .doit = hwsim_register_received_nl,
3972                 .flags = GENL_UNS_ADMIN_PERM,
3973         },
3974         {
3975                 .cmd = HWSIM_CMD_FRAME,
3976                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3977                 .doit = hwsim_cloned_frame_received_nl,
3978         },
3979         {
3980                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3981                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3982                 .doit = hwsim_tx_info_frame_received_nl,
3983         },
3984         {
3985                 .cmd = HWSIM_CMD_NEW_RADIO,
3986                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3987                 .doit = hwsim_new_radio_nl,
3988                 .flags = GENL_UNS_ADMIN_PERM,
3989         },
3990         {
3991                 .cmd = HWSIM_CMD_DEL_RADIO,
3992                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3993                 .doit = hwsim_del_radio_nl,
3994                 .flags = GENL_UNS_ADMIN_PERM,
3995         },
3996         {
3997                 .cmd = HWSIM_CMD_GET_RADIO,
3998                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3999                 .doit = hwsim_get_radio_nl,
4000                 .dumpit = hwsim_dump_radio_nl,
4001         },
4002 };
4003
4004 static struct genl_family hwsim_genl_family __ro_after_init = {
4005         .name = "MAC80211_HWSIM",
4006         .version = 1,
4007         .maxattr = HWSIM_ATTR_MAX,
4008         .policy = hwsim_genl_policy,
4009         .netnsok = true,
4010         .module = THIS_MODULE,
4011         .small_ops = hwsim_ops,
4012         .n_small_ops = ARRAY_SIZE(hwsim_ops),
4013         .mcgrps = hwsim_mcgrps,
4014         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
4015 };
4016
4017 static void remove_user_radios(u32 portid)
4018 {
4019         struct mac80211_hwsim_data *entry, *tmp;
4020         LIST_HEAD(list);
4021
4022         spin_lock_bh(&hwsim_radio_lock);
4023         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
4024                 if (entry->destroy_on_close && entry->portid == portid) {
4025                         list_move(&entry->list, &list);
4026                         rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
4027                                                hwsim_rht_params);
4028                         hwsim_radios_generation++;
4029                 }
4030         }
4031         spin_unlock_bh(&hwsim_radio_lock);
4032
4033         list_for_each_entry_safe(entry, tmp, &list, list) {
4034                 list_del(&entry->list);
4035                 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
4036                                          NULL);
4037         }
4038 }
4039
4040 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
4041                                          unsigned long state,
4042                                          void *_notify)
4043 {
4044         struct netlink_notify *notify = _notify;
4045
4046         if (state != NETLINK_URELEASE)
4047                 return NOTIFY_DONE;
4048
4049         remove_user_radios(notify->portid);
4050
4051         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
4052                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
4053                        " socket, switching to perfect channel medium\n");
4054                 hwsim_register_wmediumd(notify->net, 0);
4055         }
4056         return NOTIFY_DONE;
4057
4058 }
4059
4060 static struct notifier_block hwsim_netlink_notifier = {
4061         .notifier_call = mac80211_hwsim_netlink_notify,
4062 };
4063
4064 static int __init hwsim_init_netlink(void)
4065 {
4066         int rc;
4067
4068         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
4069
4070         rc = genl_register_family(&hwsim_genl_family);
4071         if (rc)
4072                 goto failure;
4073
4074         rc = netlink_register_notifier(&hwsim_netlink_notifier);
4075         if (rc) {
4076                 genl_unregister_family(&hwsim_genl_family);
4077                 goto failure;
4078         }
4079
4080         return 0;
4081
4082 failure:
4083         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4084         return -EINVAL;
4085 }
4086
4087 static __net_init int hwsim_init_net(struct net *net)
4088 {
4089         return hwsim_net_set_netgroup(net);
4090 }
4091
4092 static void __net_exit hwsim_exit_net(struct net *net)
4093 {
4094         struct mac80211_hwsim_data *data, *tmp;
4095         LIST_HEAD(list);
4096
4097         spin_lock_bh(&hwsim_radio_lock);
4098         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
4099                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
4100                         continue;
4101
4102                 /* Radios created in init_net are returned to init_net. */
4103                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
4104                         continue;
4105
4106                 list_move(&data->list, &list);
4107                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4108                                        hwsim_rht_params);
4109                 hwsim_radios_generation++;
4110         }
4111         spin_unlock_bh(&hwsim_radio_lock);
4112
4113         list_for_each_entry_safe(data, tmp, &list, list) {
4114                 list_del(&data->list);
4115                 mac80211_hwsim_del_radio(data,
4116                                          wiphy_name(data->hw->wiphy),
4117                                          NULL);
4118         }
4119
4120         ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
4121 }
4122
4123 static struct pernet_operations hwsim_net_ops = {
4124         .init = hwsim_init_net,
4125         .exit = hwsim_exit_net,
4126         .id   = &hwsim_net_id,
4127         .size = sizeof(struct hwsim_net),
4128 };
4129
4130 static void hwsim_exit_netlink(void)
4131 {
4132         /* unregister the notifier */
4133         netlink_unregister_notifier(&hwsim_netlink_notifier);
4134         /* unregister the family */
4135         genl_unregister_family(&hwsim_genl_family);
4136 }
4137
4138 #if IS_REACHABLE(CONFIG_VIRTIO)
4139 static void hwsim_virtio_tx_done(struct virtqueue *vq)
4140 {
4141         unsigned int len;
4142         struct sk_buff *skb;
4143         unsigned long flags;
4144
4145         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4146         while ((skb = virtqueue_get_buf(vq, &len)))
4147                 nlmsg_free(skb);
4148         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4149 }
4150
4151 static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
4152 {
4153         struct nlmsghdr *nlh;
4154         struct genlmsghdr *gnlh;
4155         struct nlattr *tb[HWSIM_ATTR_MAX + 1];
4156         struct genl_info info = {};
4157         int err;
4158
4159         nlh = nlmsg_hdr(skb);
4160         gnlh = nlmsg_data(nlh);
4161         err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
4162                             hwsim_genl_policy, NULL);
4163         if (err) {
4164                 pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
4165                 return err;
4166         }
4167
4168         info.attrs = tb;
4169
4170         switch (gnlh->cmd) {
4171         case HWSIM_CMD_FRAME:
4172                 hwsim_cloned_frame_received_nl(skb, &info);
4173                 break;
4174         case HWSIM_CMD_TX_INFO_FRAME:
4175                 hwsim_tx_info_frame_received_nl(skb, &info);
4176                 break;
4177         default:
4178                 pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
4179                 return -EPROTO;
4180         }
4181         return 0;
4182 }
4183
4184 static void hwsim_virtio_rx_work(struct work_struct *work)
4185 {
4186         struct virtqueue *vq;
4187         unsigned int len;
4188         struct sk_buff *skb;
4189         struct scatterlist sg[1];
4190         int err;
4191         unsigned long flags;
4192
4193         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4194         if (!hwsim_virtio_enabled)
4195                 goto out_unlock;
4196
4197         skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
4198         if (!skb)
4199                 goto out_unlock;
4200         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4201
4202         skb->data = skb->head;
4203         skb_set_tail_pointer(skb, len);
4204         hwsim_virtio_handle_cmd(skb);
4205
4206         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4207         if (!hwsim_virtio_enabled) {
4208                 nlmsg_free(skb);
4209                 goto out_unlock;
4210         }
4211         vq = hwsim_vqs[HWSIM_VQ_RX];
4212         sg_init_one(sg, skb->head, skb_end_offset(skb));
4213         err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
4214         if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
4215                 nlmsg_free(skb);
4216         else
4217                 virtqueue_kick(vq);
4218         schedule_work(&hwsim_virtio_rx);
4219
4220 out_unlock:
4221         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4222 }
4223
4224 static void hwsim_virtio_rx_done(struct virtqueue *vq)
4225 {
4226         schedule_work(&hwsim_virtio_rx);
4227 }
4228
4229 static int init_vqs(struct virtio_device *vdev)
4230 {
4231         vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
4232                 [HWSIM_VQ_TX] = hwsim_virtio_tx_done,
4233                 [HWSIM_VQ_RX] = hwsim_virtio_rx_done,
4234         };
4235         const char *names[HWSIM_NUM_VQS] = {
4236                 [HWSIM_VQ_TX] = "tx",
4237                 [HWSIM_VQ_RX] = "rx",
4238         };
4239
4240         return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
4241                                hwsim_vqs, callbacks, names, NULL);
4242 }
4243
4244 static int fill_vq(struct virtqueue *vq)
4245 {
4246         int i, err;
4247         struct sk_buff *skb;
4248         struct scatterlist sg[1];
4249
4250         for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
4251                 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4252                 if (!skb)
4253                         return -ENOMEM;
4254
4255                 sg_init_one(sg, skb->head, skb_end_offset(skb));
4256                 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4257                 if (err) {
4258                         nlmsg_free(skb);
4259                         return err;
4260                 }
4261         }
4262         virtqueue_kick(vq);
4263         return 0;
4264 }
4265
4266 static void remove_vqs(struct virtio_device *vdev)
4267 {
4268         int i;
4269
4270         vdev->config->reset(vdev);
4271
4272         for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
4273                 struct virtqueue *vq = hwsim_vqs[i];
4274                 struct sk_buff *skb;
4275
4276                 while ((skb = virtqueue_detach_unused_buf(vq)))
4277                         nlmsg_free(skb);
4278         }
4279
4280         vdev->config->del_vqs(vdev);
4281 }
4282
4283 static int hwsim_virtio_probe(struct virtio_device *vdev)
4284 {
4285         int err;
4286         unsigned long flags;
4287
4288         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4289         if (hwsim_virtio_enabled) {
4290                 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4291                 return -EEXIST;
4292         }
4293         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4294
4295         err = init_vqs(vdev);
4296         if (err)
4297                 return err;
4298
4299         err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
4300         if (err)
4301                 goto out_remove;
4302
4303         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4304         hwsim_virtio_enabled = true;
4305         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4306
4307         schedule_work(&hwsim_virtio_rx);
4308         return 0;
4309
4310 out_remove:
4311         remove_vqs(vdev);
4312         return err;
4313 }
4314
4315 static void hwsim_virtio_remove(struct virtio_device *vdev)
4316 {
4317         hwsim_virtio_enabled = false;
4318
4319         cancel_work_sync(&hwsim_virtio_rx);
4320
4321         remove_vqs(vdev);
4322 }
4323
4324 /* MAC80211_HWSIM virtio device id table */
4325 static const struct virtio_device_id id_table[] = {
4326         { VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
4327         { 0 }
4328 };
4329 MODULE_DEVICE_TABLE(virtio, id_table);
4330
4331 static struct virtio_driver virtio_hwsim = {
4332         .driver.name = KBUILD_MODNAME,
4333         .driver.owner = THIS_MODULE,
4334         .id_table = id_table,
4335         .probe = hwsim_virtio_probe,
4336         .remove = hwsim_virtio_remove,
4337 };
4338
4339 static int hwsim_register_virtio_driver(void)
4340 {
4341         spin_lock_init(&hwsim_virtio_lock);
4342
4343         return register_virtio_driver(&virtio_hwsim);
4344 }
4345
4346 static void hwsim_unregister_virtio_driver(void)
4347 {
4348         unregister_virtio_driver(&virtio_hwsim);
4349 }
4350 #else
4351 static inline int hwsim_register_virtio_driver(void)
4352 {
4353         return 0;
4354 }
4355
4356 static inline void hwsim_unregister_virtio_driver(void)
4357 {
4358 }
4359 #endif
4360
4361 static int __init init_mac80211_hwsim(void)
4362 {
4363         int i, err;
4364
4365         if (radios < 0 || radios > 100)
4366                 return -EINVAL;
4367
4368         if (channels < 1)
4369                 return -EINVAL;
4370
4371         spin_lock_init(&hwsim_radio_lock);
4372
4373         err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
4374         if (err)
4375                 return err;
4376
4377         err = register_pernet_device(&hwsim_net_ops);
4378         if (err)
4379                 goto out_free_rht;
4380
4381         err = platform_driver_register(&mac80211_hwsim_driver);
4382         if (err)
4383                 goto out_unregister_pernet;
4384
4385         err = hwsim_init_netlink();
4386         if (err)
4387                 goto out_unregister_driver;
4388
4389         err = hwsim_register_virtio_driver();
4390         if (err)
4391                 goto out_exit_netlink;
4392
4393         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
4394         if (IS_ERR(hwsim_class)) {
4395                 err = PTR_ERR(hwsim_class);
4396                 goto out_exit_virtio;
4397         }
4398
4399         hwsim_init_s1g_channels(hwsim_channels_s1g);
4400
4401         for (i = 0; i < radios; i++) {
4402                 struct hwsim_new_radio_params param = { 0 };
4403
4404                 param.channels = channels;
4405
4406                 switch (regtest) {
4407                 case HWSIM_REGTEST_DIFF_COUNTRY:
4408                         if (i < ARRAY_SIZE(hwsim_alpha2s))
4409                                 param.reg_alpha2 = hwsim_alpha2s[i];
4410                         break;
4411                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
4412                         if (!i)
4413                                 param.reg_alpha2 = hwsim_alpha2s[0];
4414                         break;
4415                 case HWSIM_REGTEST_STRICT_ALL:
4416                         param.reg_strict = true;
4417                         fallthrough;
4418                 case HWSIM_REGTEST_DRIVER_REG_ALL:
4419                         param.reg_alpha2 = hwsim_alpha2s[0];
4420                         break;
4421                 case HWSIM_REGTEST_WORLD_ROAM:
4422                         if (i == 0)
4423                                 param.regd = &hwsim_world_regdom_custom_01;
4424                         break;
4425                 case HWSIM_REGTEST_CUSTOM_WORLD:
4426                         param.regd = &hwsim_world_regdom_custom_01;
4427                         break;
4428                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
4429                         if (i == 0)
4430                                 param.regd = &hwsim_world_regdom_custom_01;
4431                         else if (i == 1)
4432                                 param.regd = &hwsim_world_regdom_custom_02;
4433                         break;
4434                 case HWSIM_REGTEST_STRICT_FOLLOW:
4435                         if (i == 0) {
4436                                 param.reg_strict = true;
4437                                 param.reg_alpha2 = hwsim_alpha2s[0];
4438                         }
4439                         break;
4440                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
4441                         if (i == 0) {
4442                                 param.reg_strict = true;
4443                                 param.reg_alpha2 = hwsim_alpha2s[0];
4444                         } else if (i == 1) {
4445                                 param.reg_alpha2 = hwsim_alpha2s[1];
4446                         }
4447                         break;
4448                 case HWSIM_REGTEST_ALL:
4449                         switch (i) {
4450                         case 0:
4451                                 param.regd = &hwsim_world_regdom_custom_01;
4452                                 break;
4453                         case 1:
4454                                 param.regd = &hwsim_world_regdom_custom_02;
4455                                 break;
4456                         case 2:
4457                                 param.reg_alpha2 = hwsim_alpha2s[0];
4458                                 break;
4459                         case 3:
4460                                 param.reg_alpha2 = hwsim_alpha2s[1];
4461                                 break;
4462                         case 4:
4463                                 param.reg_strict = true;
4464                                 param.reg_alpha2 = hwsim_alpha2s[2];
4465                                 break;
4466                         }
4467                         break;
4468                 default:
4469                         break;
4470                 }
4471
4472                 param.p2p_device = support_p2p_device;
4473                 param.use_chanctx = channels > 1;
4474                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4475                 if (param.p2p_device)
4476                         param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4477
4478                 err = mac80211_hwsim_new_radio(NULL, &param);
4479                 if (err < 0)
4480                         goto out_free_radios;
4481         }
4482
4483         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4484                                  hwsim_mon_setup);
4485         if (hwsim_mon == NULL) {
4486                 err = -ENOMEM;
4487                 goto out_free_radios;
4488         }
4489
4490         rtnl_lock();
4491         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4492         if (err < 0) {
4493                 rtnl_unlock();
4494                 goto out_free_mon;
4495         }
4496
4497         err = register_netdevice(hwsim_mon);
4498         if (err < 0) {
4499                 rtnl_unlock();
4500                 goto out_free_mon;
4501         }
4502         rtnl_unlock();
4503
4504         return 0;
4505
4506 out_free_mon:
4507         free_netdev(hwsim_mon);
4508 out_free_radios:
4509         mac80211_hwsim_free();
4510 out_exit_virtio:
4511         hwsim_unregister_virtio_driver();
4512 out_exit_netlink:
4513         hwsim_exit_netlink();
4514 out_unregister_driver:
4515         platform_driver_unregister(&mac80211_hwsim_driver);
4516 out_unregister_pernet:
4517         unregister_pernet_device(&hwsim_net_ops);
4518 out_free_rht:
4519         rhashtable_destroy(&hwsim_radios_rht);
4520         return err;
4521 }
4522 module_init(init_mac80211_hwsim);
4523
4524 static void __exit exit_mac80211_hwsim(void)
4525 {
4526         pr_debug("mac80211_hwsim: unregister radios\n");
4527
4528         hwsim_unregister_virtio_driver();
4529         hwsim_exit_netlink();
4530
4531         mac80211_hwsim_free();
4532
4533         rhashtable_destroy(&hwsim_radios_rht);
4534         unregister_netdev(hwsim_mon);
4535         platform_driver_unregister(&mac80211_hwsim_driver);
4536         unregister_pernet_device(&hwsim_net_ops);
4537 }
4538 module_exit(exit_mac80211_hwsim);