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 #define CHAN6G(_freq) { \
 315         .band = NL80211_BAND_6GHZ, \
 316         .center_freq = (_freq), \
 317         .hw_value = (_freq), \
 318 }
 319
 320 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 321         CHAN2G(2412), /* Channel 1 */
 322         CHAN2G(2417), /* Channel 2 */
 323         CHAN2G(2422), /* Channel 3 */
 324         CHAN2G(2427), /* Channel 4 */
 325         CHAN2G(2432), /* Channel 5 */
 326         CHAN2G(2437), /* Channel 6 */
 327         CHAN2G(2442), /* Channel 7 */
 328         CHAN2G(2447), /* Channel 8 */
 329         CHAN2G(2452), /* Channel 9 */
 330         CHAN2G(2457), /* Channel 10 */
 331         CHAN2G(2462), /* Channel 11 */
 332         CHAN2G(2467), /* Channel 12 */
 333         CHAN2G(2472), /* Channel 13 */
 334         CHAN2G(2484), /* Channel 14 */
 335 };
 336
 337 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 338         CHAN5G(5180), /* Channel 36 */
 339         CHAN5G(5200), /* Channel 40 */
 340         CHAN5G(5220), /* Channel 44 */
 341         CHAN5G(5240), /* Channel 48 */
 342
 343         CHAN5G(5260), /* Channel 52 */
 344         CHAN5G(5280), /* Channel 56 */
 345         CHAN5G(5300), /* Channel 60 */
 346         CHAN5G(5320), /* Channel 64 */
 347
 348         CHAN5G(5500), /* Channel 100 */
 349         CHAN5G(5520), /* Channel 104 */
 350         CHAN5G(5540), /* Channel 108 */
 351         CHAN5G(5560), /* Channel 112 */
 352         CHAN5G(5580), /* Channel 116 */
 353         CHAN5G(5600), /* Channel 120 */
 354         CHAN5G(5620), /* Channel 124 */
 355         CHAN5G(5640), /* Channel 128 */
 356         CHAN5G(5660), /* Channel 132 */
 357         CHAN5G(5680), /* Channel 136 */
 358         CHAN5G(5700), /* Channel 140 */
 359
 360         CHAN5G(5745), /* Channel 149 */
 361         CHAN5G(5765), /* Channel 153 */
 362         CHAN5G(5785), /* Channel 157 */
 363         CHAN5G(5805), /* Channel 161 */
 364         CHAN5G(5825), /* Channel 165 */
 365         CHAN5G(5845), /* Channel 169 */
 366
 367         CHAN5G(5855), /* Channel 171 */
 368         CHAN5G(5860), /* Channel 172 */
 369         CHAN5G(5865), /* Channel 173 */
 370         CHAN5G(5870), /* Channel 174 */
 371
 372         CHAN5G(5875), /* Channel 175 */
 373         CHAN5G(5880), /* Channel 176 */
 374         CHAN5G(5885), /* Channel 177 */
 375         CHAN5G(5890), /* Channel 178 */
 376         CHAN5G(5895), /* Channel 179 */
 377         CHAN5G(5900), /* Channel 180 */
 378         CHAN5G(5905), /* Channel 181 */
 379
 380         CHAN5G(5910), /* Channel 182 */
 381         CHAN5G(5915), /* Channel 183 */
 382         CHAN5G(5920), /* Channel 184 */
 383         CHAN5G(5925), /* Channel 185 */
 384 };
 385
 386 static const struct ieee80211_channel hwsim_channels_6ghz[] = {
 387         CHAN6G(5955), /* Channel 1 */
 388         CHAN6G(5975), /* Channel 5 */
 389         CHAN6G(5995), /* Channel 9 */
 390         CHAN6G(6015), /* Channel 13 */
 391         CHAN6G(6035), /* Channel 17 */
 392         CHAN6G(6055), /* Channel 21 */
 393         CHAN6G(6075), /* Channel 25 */
 394         CHAN6G(6095), /* Channel 29 */
 395         CHAN6G(6115), /* Channel 33 */
 396         CHAN6G(6135), /* Channel 37 */
 397         CHAN6G(6155), /* Channel 41 */
 398         CHAN6G(6175), /* Channel 45 */
 399         CHAN6G(6195), /* Channel 49 */
 400         CHAN6G(6215), /* Channel 53 */
 401         CHAN6G(6235), /* Channel 57 */
 402         CHAN6G(6255), /* Channel 61 */
 403         CHAN6G(6275), /* Channel 65 */
 404         CHAN6G(6295), /* Channel 69 */
 405         CHAN6G(6315), /* Channel 73 */
 406         CHAN6G(6335), /* Channel 77 */
 407         CHAN6G(6355), /* Channel 81 */
 408         CHAN6G(6375), /* Channel 85 */
 409         CHAN6G(6395), /* Channel 89 */
 410         CHAN6G(6415), /* Channel 93 */
 411         CHAN6G(6435), /* Channel 97 */
 412         CHAN6G(6455), /* Channel 181 */
 413         CHAN6G(6475), /* Channel 105 */
 414         CHAN6G(6495), /* Channel 109 */
 415         CHAN6G(6515), /* Channel 113 */
 416         CHAN6G(6535), /* Channel 117 */
 417         CHAN6G(6555), /* Channel 121 */
 418         CHAN6G(6575), /* Channel 125 */
 419         CHAN6G(6595), /* Channel 129 */
 420         CHAN6G(6615), /* Channel 133 */
 421         CHAN6G(6635), /* Channel 137 */
 422         CHAN6G(6655), /* Channel 141 */
 423         CHAN6G(6675), /* Channel 145 */
 424         CHAN6G(6695), /* Channel 149 */
 425         CHAN6G(6715), /* Channel 153 */
 426         CHAN6G(6735), /* Channel 157 */
 427         CHAN6G(6755), /* Channel 161 */
 428         CHAN6G(6775), /* Channel 165 */
 429         CHAN6G(6795), /* Channel 169 */
 430         CHAN6G(6815), /* Channel 173 */
 431         CHAN6G(6835), /* Channel 177 */
 432         CHAN6G(6855), /* Channel 181 */
 433         CHAN6G(6875), /* Channel 185 */
 434         CHAN6G(6895), /* Channel 189 */
 435         CHAN6G(6915), /* Channel 193 */
 436         CHAN6G(6935), /* Channel 197 */
 437         CHAN6G(6955), /* Channel 201 */
 438         CHAN6G(6975), /* Channel 205 */
 439         CHAN6G(6995), /* Channel 209 */
 440         CHAN6G(7015), /* Channel 213 */
 441         CHAN6G(7035), /* Channel 217 */
 442         CHAN6G(7055), /* Channel 221 */
 443         CHAN6G(7075), /* Channel 225 */
 444         CHAN6G(7095), /* Channel 229 */
 445         CHAN6G(7115), /* Channel 233 */
 446 };
 447
 448 #define NUM_S1G_CHANS_US 51
 449 static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
 450
 451 static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
 452         .s1g = true,
 453         .cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
 454                  0,
 455                  0,
 456                  S1G_CAP3_MAX_MPDU_LEN,
 457                  0,
 458                  S1G_CAP5_AMPDU,
 459                  0,
 460                  S1G_CAP7_DUP_1MHZ,
 461                  S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
 462                  0},
 463         .nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
 464         /* RX Highest Supported Long GI Data Rate 0:7 */
 465                      0,
 466         /* RX Highest Supported Long GI Data Rate 0:7 */
 467         /* TX S1G MCS Map 0:6 */
 468                      0xfa,
 469         /* TX S1G MCS Map :7 */
 470         /* TX Highest Supported Long GI Data Rate 0:6 */
 471                      0x80,
 472         /* TX Highest Supported Long GI Data Rate 7:8 */
 473         /* Rx Single spatial stream and S1G-MCS Map for 1MHz */
 474         /* Tx Single spatial stream and S1G-MCS Map for 1MHz */
 475                      0 },
 476 };
 477
 478 static void hwsim_init_s1g_channels(struct ieee80211_channel *channels)
 479 {
 480         int ch, freq;
 481
 482         for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
 483                 freq = 902000 + (ch + 1) * 500;
 484                 channels[ch].band = NL80211_BAND_S1GHZ;
 485                 channels[ch].center_freq = KHZ_TO_MHZ(freq);
 486                 channels[ch].freq_offset = freq % 1000;
 487                 channels[ch].hw_value = ch + 1;
 488         }
 489 }
 490
 491 static const struct ieee80211_rate hwsim_rates[] = {
 492         { .bitrate = 10 },
 493         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 494         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 495         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 496         { .bitrate = 60 },
 497         { .bitrate = 90 },
 498         { .bitrate = 120 },
 499         { .bitrate = 180 },
 500         { .bitrate = 240 },
 501         { .bitrate = 360 },
 502         { .bitrate = 480 },
 503         { .bitrate = 540 }
 504 };
 505
 506 static const u32 hwsim_ciphers[] = {
 507         WLAN_CIPHER_SUITE_WEP40,
 508         WLAN_CIPHER_SUITE_WEP104,
 509         WLAN_CIPHER_SUITE_TKIP,
 510         WLAN_CIPHER_SUITE_CCMP,
 511         WLAN_CIPHER_SUITE_CCMP_256,
 512         WLAN_CIPHER_SUITE_GCMP,
 513         WLAN_CIPHER_SUITE_GCMP_256,
 514         WLAN_CIPHER_SUITE_AES_CMAC,
 515         WLAN_CIPHER_SUITE_BIP_CMAC_256,
 516         WLAN_CIPHER_SUITE_BIP_GMAC_128,
 517         WLAN_CIPHER_SUITE_BIP_GMAC_256,
 518 };
 519
 520 #define OUI_QCA 0x001374
 521 #define QCA_NL80211_SUBCMD_TEST 1
 522 enum qca_nl80211_vendor_subcmds {
 523         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 524         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 525 };
 526
 527 static const struct nla_policy
 528 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 529         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 530 };
 531
 532 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 533                                           struct wireless_dev *wdev,
 534                                           const void *data, int data_len)
 535 {
 536         struct sk_buff *skb;
 537         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 538         int err;
 539         u32 val;
 540
 541         err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
 542                                    data_len, hwsim_vendor_test_policy, NULL);
 543         if (err)
 544                 return err;
 545         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 546                 return -EINVAL;
 547         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 548         wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
 549
 550         /* Send a vendor event as a test. Note that this would not normally be
 551          * done within a command handler, but rather, based on some other
 552          * trigger. For simplicity, this command is used to trigger the event
 553          * here.
 554          *
 555          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 556          */
 557         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 558         if (skb) {
 559                 /* skb_put() or nla_put() will fill up data within
 560                  * NL80211_ATTR_VENDOR_DATA.
 561                  */
 562
 563                 /* Add vendor data */
 564                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 565
 566                 /* Send the event - this will call nla_nest_end() */
 567                 cfg80211_vendor_event(skb, GFP_KERNEL);
 568         }
 569
 570         /* Send a response to the command */
 571         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 572         if (!skb)
 573                 return -ENOMEM;
 574
 575         /* skb_put() or nla_put() will fill up data within
 576          * NL80211_ATTR_VENDOR_DATA
 577          */
 578         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 579
 580         return cfg80211_vendor_cmd_reply(skb);
 581 }
 582
 583 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 584         {
 585                 .info = { .vendor_id = OUI_QCA,
 586                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 587                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 588                 .doit = mac80211_hwsim_vendor_cmd_test,
 589                 .policy = hwsim_vendor_test_policy,
 590                 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
 591         }
 592 };
 593
 594 /* Advertise support vendor specific events */
 595 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 596         { .vendor_id = OUI_QCA, .subcmd = 1 },
 597 };
 598
 599 static DEFINE_SPINLOCK(hwsim_radio_lock);
 600 static LIST_HEAD(hwsim_radios);
 601 static struct rhashtable hwsim_radios_rht;
 602 static int hwsim_radio_idx;
 603 static int hwsim_radios_generation = 1;
 604
 605 static struct platform_driver mac80211_hwsim_driver = {
 606         .driver = {
 607                 .name = "mac80211_hwsim",
 608         },
 609 };
 610
 611 struct mac80211_hwsim_data {
 612         struct list_head list;
 613         struct rhash_head rht;
 614         struct ieee80211_hw *hw;
 615         struct device *dev;
 616         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 617         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 618         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 619         struct ieee80211_channel channels_6ghz[ARRAY_SIZE(hwsim_channels_6ghz)];
 620         struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
 621         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 622         struct ieee80211_iface_combination if_combination;
 623         struct ieee80211_iface_limit if_limits[3];
 624         int n_if_limits;
 625
 626         u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
 627
 628         struct mac_address addresses[2];
 629         struct ieee80211_chanctx_conf *chanctx;
 630         int channels, idx;
 631         bool use_chanctx;
 632         bool destroy_on_close;
 633         u32 portid;
 634         char alpha2[2];
 635         const struct ieee80211_regdomain *regd;
 636
 637         struct ieee80211_channel *tmp_chan;
 638         struct ieee80211_channel *roc_chan;
 639         u32 roc_duration;
 640         struct delayed_work roc_start;
 641         struct delayed_work roc_done;
 642         struct delayed_work hw_scan;
 643         struct cfg80211_scan_request *hw_scan_request;
 644         struct ieee80211_vif *hw_scan_vif;
 645         int scan_chan_idx;
 646         u8 scan_addr[ETH_ALEN];
 647         struct {
 648                 struct ieee80211_channel *channel;
 649                 unsigned long next_start, start, end;
 650         } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 651                       ARRAY_SIZE(hwsim_channels_5ghz) +
 652                       ARRAY_SIZE(hwsim_channels_6ghz)];
 653
 654         struct ieee80211_channel *channel;
 655         u64 beacon_int  /* beacon interval in us */;
 656         unsigned int rx_filter;
 657         bool started, idle, scanning;
 658         struct mutex mutex;
 659         struct hrtimer beacon_timer;
 660         enum ps_mode {
 661                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 662         } ps;
 663         bool ps_poll_pending;
 664         struct dentry *debugfs;
 665
 666         uintptr_t pending_cookie;
 667         struct sk_buff_head pending;    /* packets pending */
 668         /*
 669          * Only radios in the same group can communicate together (the
 670          * channel has to match too). Each bit represents a group. A
 671          * radio can be in more than one group.
 672          */
 673         u64 group;
 674
 675         /* group shared by radios created in the same netns */
 676         int netgroup;
 677         /* wmediumd portid responsible for netgroup of this radio */
 678         u32 wmediumd;
 679
 680         /* difference between this hw's clock and the real clock, in usecs */
 681         s64 tsf_offset;
 682         s64 bcn_delta;
 683         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 684         u64 abs_bcn_ts;
 685
 686         /* Stats */
 687         u64 tx_pkts;
 688         u64 rx_pkts;
 689         u64 tx_bytes;
 690         u64 rx_bytes;
 691         u64 tx_dropped;
 692         u64 tx_failed;
 693 };
 694
 695 static const struct rhashtable_params hwsim_rht_params = {
 696         .nelem_hint = 2,
 697         .automatic_shrinking = true,
 698         .key_len = ETH_ALEN,
 699         .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
 700         .head_offset = offsetof(struct mac80211_hwsim_data, rht),
 701 };
 702
 703 struct hwsim_radiotap_hdr {
 704         struct ieee80211_radiotap_header hdr;
 705         __le64 rt_tsft;
 706         u8 rt_flags;
 707         u8 rt_rate;
 708         __le16 rt_channel;
 709         __le16 rt_chbitmask;
 710 } __packed;
 711
 712 struct hwsim_radiotap_ack_hdr {
 713         struct ieee80211_radiotap_header hdr;
 714         u8 rt_flags;
 715         u8 pad;
 716         __le16 rt_channel;
 717         __le16 rt_chbitmask;
 718 } __packed;
 719
 720 /* MAC80211_HWSIM netlink family */
 721 static struct genl_family hwsim_genl_family;
 722
 723 enum hwsim_multicast_groups {
 724         HWSIM_MCGRP_CONFIG,
 725 };
 726
 727 static const struct genl_multicast_group hwsim_mcgrps[] = {
 728         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 729 };
 730
 731 /* MAC80211_HWSIM netlink policy */
 732
 733 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 734         [HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
 735         [HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
 736         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 737                                .len = IEEE80211_MAX_DATA_LEN },
 738         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 739         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 740         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 741         [HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
 742                                  .len = IEEE80211_TX_MAX_RATES *
 743                                         sizeof(struct hwsim_tx_rate)},
 744         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 745         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 746         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 747         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 748         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 749         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 750         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 751         [HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
 752         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 753         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 754         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 755         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 756         [HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
 757         [HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
 758         [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
 759         [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
 760 };
 761
 762 #if IS_REACHABLE(CONFIG_VIRTIO)
 763
 764 /* MAC80211_HWSIM virtio queues */
 765 static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
 766 static bool hwsim_virtio_enabled;
 767 static DEFINE_SPINLOCK(hwsim_virtio_lock);
 768
 769 static void hwsim_virtio_rx_work(struct work_struct *work);
 770 static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
 771
 772 static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 773                            struct sk_buff *skb)
 774 {
 775         struct scatterlist sg[1];
 776         unsigned long flags;
 777         int err;
 778
 779         spin_lock_irqsave(&hwsim_virtio_lock, flags);
 780         if (!hwsim_virtio_enabled) {
 781                 err = -ENODEV;
 782                 goto out_free;
 783         }
 784
 785         sg_init_one(sg, skb->head, skb_end_offset(skb));
 786         err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
 787                                    GFP_ATOMIC);
 788         if (err)
 789                 goto out_free;
 790         virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
 791         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 792         return 0;
 793
 794 out_free:
 795         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 796         nlmsg_free(skb);
 797         return err;
 798 }
 799 #else
 800 /* cause a linker error if this ends up being needed */
 801 extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 802                            struct sk_buff *skb);
 803 #define hwsim_virtio_enabled false
 804 #endif
 805
 806 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 807                                     struct sk_buff *skb,
 808                                     struct ieee80211_channel *chan);
 809
 810 /* sysfs attributes */
 811 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 812 {
 813         struct mac80211_hwsim_data *data = dat;
 814         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 815         struct sk_buff *skb;
 816         struct ieee80211_pspoll *pspoll;
 817
 818         if (!vp->assoc)
 819                 return;
 820
 821         wiphy_dbg(data->hw->wiphy,
 822                   "%s: send PS-Poll to %pM for aid %d\n",
 823                   __func__, vp->bssid, vp->aid);
 824
 825         skb = dev_alloc_skb(sizeof(*pspoll));
 826         if (!skb)
 827                 return;
 828         pspoll = skb_put(skb, sizeof(*pspoll));
 829         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 830                                             IEEE80211_STYPE_PSPOLL |
 831                                             IEEE80211_FCTL_PM);
 832         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 833         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 834         memcpy(pspoll->ta, mac, ETH_ALEN);
 835
 836         rcu_read_lock();
 837         mac80211_hwsim_tx_frame(data->hw, skb,
 838                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 839         rcu_read_unlock();
 840 }
 841
 842 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 843                                 struct ieee80211_vif *vif, int ps)
 844 {
 845         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 846         struct sk_buff *skb;
 847         struct ieee80211_hdr *hdr;
 848
 849         if (!vp->assoc)
 850                 return;
 851
 852         wiphy_dbg(data->hw->wiphy,
 853                   "%s: send data::nullfunc to %pM ps=%d\n",
 854                   __func__, vp->bssid, ps);
 855
 856         skb = dev_alloc_skb(sizeof(*hdr));
 857         if (!skb)
 858                 return;
 859         hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 860         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 861                                          IEEE80211_STYPE_NULLFUNC |
 862                                          IEEE80211_FCTL_TODS |
 863                                          (ps ? IEEE80211_FCTL_PM : 0));
 864         hdr->duration_id = cpu_to_le16(0);
 865         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 866         memcpy(hdr->addr2, mac, ETH_ALEN);
 867         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 868
 869         rcu_read_lock();
 870         mac80211_hwsim_tx_frame(data->hw, skb,
 871                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 872         rcu_read_unlock();
 873 }
 874
 875
 876 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 877                                    struct ieee80211_vif *vif)
 878 {
 879         struct mac80211_hwsim_data *data = dat;
 880         hwsim_send_nullfunc(data, mac, vif, 1);
 881 }
 882
 883 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 884                                       struct ieee80211_vif *vif)
 885 {
 886         struct mac80211_hwsim_data *data = dat;
 887         hwsim_send_nullfunc(data, mac, vif, 0);
 888 }
 889
 890 static int hwsim_fops_ps_read(void *dat, u64 *val)
 891 {
 892         struct mac80211_hwsim_data *data = dat;
 893         *val = data->ps;
 894         return 0;
 895 }
 896
 897 static int hwsim_fops_ps_write(void *dat, u64 val)
 898 {
 899         struct mac80211_hwsim_data *data = dat;
 900         enum ps_mode old_ps;
 901
 902         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 903             val != PS_MANUAL_POLL)
 904                 return -EINVAL;
 905
 906         if (val == PS_MANUAL_POLL) {
 907                 if (data->ps != PS_ENABLED)
 908                         return -EINVAL;
 909                 local_bh_disable();
 910                 ieee80211_iterate_active_interfaces_atomic(
 911                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 912                         hwsim_send_ps_poll, data);
 913                 local_bh_enable();
 914                 return 0;
 915         }
 916         old_ps = data->ps;
 917         data->ps = val;
 918
 919         local_bh_disable();
 920         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 921                 ieee80211_iterate_active_interfaces_atomic(
 922                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 923                         hwsim_send_nullfunc_ps, data);
 924         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 925                 ieee80211_iterate_active_interfaces_atomic(
 926                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 927                         hwsim_send_nullfunc_no_ps, data);
 928         }
 929         local_bh_enable();
 930
 931         return 0;
 932 }
 933
 934 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 935                          "%llu\n");
 936
 937 static int hwsim_write_simulate_radar(void *dat, u64 val)
 938 {
 939         struct mac80211_hwsim_data *data = dat;
 940
 941         ieee80211_radar_detected(data->hw);
 942
 943         return 0;
 944 }
 945
 946 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
 947                          hwsim_write_simulate_radar, "%llu\n");
 948
 949 static int hwsim_fops_group_read(void *dat, u64 *val)
 950 {
 951         struct mac80211_hwsim_data *data = dat;
 952         *val = data->group;
 953         return 0;
 954 }
 955
 956 static int hwsim_fops_group_write(void *dat, u64 val)
 957 {
 958         struct mac80211_hwsim_data *data = dat;
 959         data->group = val;
 960         return 0;
 961 }
 962
 963 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
 964                          hwsim_fops_group_read, hwsim_fops_group_write,
 965                          "%llx\n");
 966
 967 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 968                                         struct net_device *dev)
 969 {
 970         /* TODO: allow packet injection */
 971         dev_kfree_skb(skb);
 972         return NETDEV_TX_OK;
 973 }
 974
 975 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 976 {
 977         return ktime_to_us(ktime_get_real());
 978 }
 979
 980 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 981 {
 982         u64 now = mac80211_hwsim_get_tsf_raw();
 983         return cpu_to_le64(now + data->tsf_offset);
 984 }
 985
 986 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 987                                   struct ieee80211_vif *vif)
 988 {
 989         struct mac80211_hwsim_data *data = hw->priv;
 990         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 991 }
 992
 993 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 994                 struct ieee80211_vif *vif, u64 tsf)
 995 {
 996         struct mac80211_hwsim_data *data = hw->priv;
 997         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 998         u32 bcn_int = data->beacon_int;
 999         u64 delta = abs(tsf - now);
1000
1001         /* adjust after beaconing with new timestamp at old TBTT */
1002         if (tsf > now) {
1003                 data->tsf_offset += delta;
1004                 data->bcn_delta = do_div(delta, bcn_int);
1005         } else {
1006                 data->tsf_offset -= delta;
1007                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
1008         }
1009 }
1010
1011 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
1012                                       struct sk_buff *tx_skb,
1013                                       struct ieee80211_channel *chan)
1014 {
1015         struct mac80211_hwsim_data *data = hw->priv;
1016         struct sk_buff *skb;
1017         struct hwsim_radiotap_hdr *hdr;
1018         u16 flags, bitrate;
1019         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
1020         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
1021
1022         if (!txrate)
1023                 bitrate = 0;
1024         else
1025                 bitrate = txrate->bitrate;
1026
1027         if (!netif_running(hwsim_mon))
1028                 return;
1029
1030         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
1031         if (skb == NULL)
1032                 return;
1033
1034         hdr = skb_push(skb, sizeof(*hdr));
1035         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1036         hdr->hdr.it_pad = 0;
1037         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1038         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1039                                           (1 << IEEE80211_RADIOTAP_RATE) |
1040                                           (1 << IEEE80211_RADIOTAP_TSFT) |
1041                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
1042         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
1043         hdr->rt_flags = 0;
1044         hdr->rt_rate = bitrate / 5;
1045         hdr->rt_channel = cpu_to_le16(chan->center_freq);
1046         flags = IEEE80211_CHAN_2GHZ;
1047         if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
1048                 flags |= IEEE80211_CHAN_OFDM;
1049         else
1050                 flags |= IEEE80211_CHAN_CCK;
1051         hdr->rt_chbitmask = cpu_to_le16(flags);
1052
1053         skb->dev = hwsim_mon;
1054         skb_reset_mac_header(skb);
1055         skb->ip_summed = CHECKSUM_UNNECESSARY;
1056         skb->pkt_type = PACKET_OTHERHOST;
1057         skb->protocol = htons(ETH_P_802_2);
1058         memset(skb->cb, 0, sizeof(skb->cb));
1059         netif_rx(skb);
1060 }
1061
1062
1063 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
1064                                        const u8 *addr)
1065 {
1066         struct sk_buff *skb;
1067         struct hwsim_radiotap_ack_hdr *hdr;
1068         u16 flags;
1069         struct ieee80211_hdr *hdr11;
1070
1071         if (!netif_running(hwsim_mon))
1072                 return;
1073
1074         skb = dev_alloc_skb(100);
1075         if (skb == NULL)
1076                 return;
1077
1078         hdr = skb_put(skb, sizeof(*hdr));
1079         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1080         hdr->hdr.it_pad = 0;
1081         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1082         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1083                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
1084         hdr->rt_flags = 0;
1085         hdr->pad = 0;
1086         hdr->rt_channel = cpu_to_le16(chan->center_freq);
1087         flags = IEEE80211_CHAN_2GHZ;
1088         hdr->rt_chbitmask = cpu_to_le16(flags);
1089
1090         hdr11 = skb_put(skb, 10);
1091         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1092                                            IEEE80211_STYPE_ACK);
1093         hdr11->duration_id = cpu_to_le16(0);
1094         memcpy(hdr11->addr1, addr, ETH_ALEN);
1095
1096         skb->dev = hwsim_mon;
1097         skb_reset_mac_header(skb);
1098         skb->ip_summed = CHECKSUM_UNNECESSARY;
1099         skb->pkt_type = PACKET_OTHERHOST;
1100         skb->protocol = htons(ETH_P_802_2);
1101         memset(skb->cb, 0, sizeof(skb->cb));
1102         netif_rx(skb);
1103 }
1104
1105 struct mac80211_hwsim_addr_match_data {
1106         u8 addr[ETH_ALEN];
1107         bool ret;
1108 };
1109
1110 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
1111                                      struct ieee80211_vif *vif)
1112 {
1113         struct mac80211_hwsim_addr_match_data *md = data;
1114
1115         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
1116                 md->ret = true;
1117 }
1118
1119 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
1120                                       const u8 *addr)
1121 {
1122         struct mac80211_hwsim_addr_match_data md = {
1123                 .ret = false,
1124         };
1125
1126         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
1127                 return true;
1128
1129         memcpy(md.addr, addr, ETH_ALEN);
1130
1131         ieee80211_iterate_active_interfaces_atomic(data->hw,
1132                                                    IEEE80211_IFACE_ITER_NORMAL,
1133                                                    mac80211_hwsim_addr_iter,
1134                                                    &md);
1135
1136         return md.ret;
1137 }
1138
1139 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
1140                            struct sk_buff *skb)
1141 {
1142         switch (data->ps) {
1143         case PS_DISABLED:
1144                 return true;
1145         case PS_ENABLED:
1146                 return false;
1147         case PS_AUTO_POLL:
1148                 /* TODO: accept (some) Beacons by default and other frames only
1149                  * if pending PS-Poll has been sent */
1150                 return true;
1151         case PS_MANUAL_POLL:
1152                 /* Allow unicast frames to own address if there is a pending
1153                  * PS-Poll */
1154                 if (data->ps_poll_pending &&
1155                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
1156                         data->ps_poll_pending = false;
1157                         return true;
1158                 }
1159                 return false;
1160         }
1161
1162         return true;
1163 }
1164
1165 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1166                                   struct sk_buff *skb, int portid)
1167 {
1168         struct net *net;
1169         bool found = false;
1170         int res = -ENOENT;
1171
1172         rcu_read_lock();
1173         for_each_net_rcu(net) {
1174                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1175                         res = genlmsg_unicast(net, skb, portid);
1176                         found = true;
1177                         break;
1178                 }
1179         }
1180         rcu_read_unlock();
1181
1182         if (!found)
1183                 nlmsg_free(skb);
1184
1185         return res;
1186 }
1187
1188 static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
1189                                          const u8 *addr, bool add)
1190 {
1191         struct mac80211_hwsim_data *data = hw->priv;
1192         u32 _portid = READ_ONCE(data->wmediumd);
1193         struct sk_buff *skb;
1194         void *msg_head;
1195
1196         if (!_portid && !hwsim_virtio_enabled)
1197                 return;
1198
1199         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1200         if (!skb)
1201                 return;
1202
1203         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1204                                add ? HWSIM_CMD_ADD_MAC_ADDR :
1205                                      HWSIM_CMD_DEL_MAC_ADDR);
1206         if (!msg_head) {
1207                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1208                 goto nla_put_failure;
1209         }
1210
1211         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1212                     ETH_ALEN, data->addresses[1].addr))
1213                 goto nla_put_failure;
1214
1215         if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
1216                 goto nla_put_failure;
1217
1218         genlmsg_end(skb, msg_head);
1219
1220         if (hwsim_virtio_enabled)
1221                 hwsim_tx_virtio(data, skb);
1222         else
1223                 hwsim_unicast_netgroup(data, skb, _portid);
1224         return;
1225 nla_put_failure:
1226         nlmsg_free(skb);
1227 }
1228
1229 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1230 {
1231         u16 result = 0;
1232
1233         if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1234                 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1235         if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1236                 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1237         if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1238                 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1239         if (rate->flags & IEEE80211_TX_RC_MCS)
1240                 result |= MAC80211_HWSIM_TX_RC_MCS;
1241         if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1242                 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1243         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1244                 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1245         if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1246                 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1247         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1248                 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1249         if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1250                 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1251         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1252                 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1253         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1254                 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1255
1256         return result;
1257 }
1258
1259 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1260                                        struct sk_buff *my_skb,
1261                                        int dst_portid,
1262                                        struct ieee80211_channel *channel)
1263 {
1264         struct sk_buff *skb;
1265         struct mac80211_hwsim_data *data = hw->priv;
1266         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1267         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1268         void *msg_head;
1269         unsigned int hwsim_flags = 0;
1270         int i;
1271         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1272         struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1273         uintptr_t cookie;
1274
1275         if (data->ps != PS_DISABLED)
1276                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1277         /* If the queue contains MAX_QUEUE skb's drop some */
1278         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1279                 /* Droping until WARN_QUEUE level */
1280                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1281                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1282                         data->tx_dropped++;
1283                 }
1284         }
1285
1286         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1287         if (skb == NULL)
1288                 goto nla_put_failure;
1289
1290         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1291                                HWSIM_CMD_FRAME);
1292         if (msg_head == NULL) {
1293                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1294                 goto nla_put_failure;
1295         }
1296
1297         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1298                     ETH_ALEN, data->addresses[1].addr))
1299                 goto nla_put_failure;
1300
1301         /* We get the skb->data */
1302         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1303                 goto nla_put_failure;
1304
1305         /* We get the flags for this transmission, and we translate them to
1306            wmediumd flags  */
1307
1308         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1309                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1310
1311         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1312                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1313
1314         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1315                 goto nla_put_failure;
1316
1317         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, channel->center_freq))
1318                 goto nla_put_failure;
1319
1320         /* We get the tx control (rate and retries) info*/
1321
1322         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1323                 tx_attempts[i].idx = info->status.rates[i].idx;
1324                 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1325                 tx_attempts[i].count = info->status.rates[i].count;
1326                 tx_attempts_flags[i].flags =
1327                                 trans_tx_rate_flags_ieee2hwsim(
1328                                                 &info->status.rates[i]);
1329         }
1330
1331         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1332                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1333                     tx_attempts))
1334                 goto nla_put_failure;
1335
1336         if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1337                     sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1338                     tx_attempts_flags))
1339                 goto nla_put_failure;
1340
1341         /* We create a cookie to identify this skb */
1342         data->pending_cookie++;
1343         cookie = data->pending_cookie;
1344         info->rate_driver_data[0] = (void *)cookie;
1345         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1346                 goto nla_put_failure;
1347
1348         genlmsg_end(skb, msg_head);
1349
1350         if (hwsim_virtio_enabled) {
1351                 if (hwsim_tx_virtio(data, skb))
1352                         goto err_free_txskb;
1353         } else {
1354                 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1355                         goto err_free_txskb;
1356         }
1357
1358         /* Enqueue the packet */
1359         skb_queue_tail(&data->pending, my_skb);
1360         data->tx_pkts++;
1361         data->tx_bytes += my_skb->len;
1362         return;
1363
1364 nla_put_failure:
1365         nlmsg_free(skb);
1366 err_free_txskb:
1367         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1368         ieee80211_free_txskb(hw, my_skb);
1369         data->tx_failed++;
1370 }
1371
1372 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1373                                struct ieee80211_channel *c2)
1374 {
1375         if (!c1 || !c2)
1376                 return false;
1377
1378         return c1->center_freq == c2->center_freq;
1379 }
1380
1381 struct tx_iter_data {
1382         struct ieee80211_channel *channel;
1383         bool receive;
1384 };
1385
1386 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1387                                    struct ieee80211_vif *vif)
1388 {
1389         struct tx_iter_data *data = _data;
1390
1391         if (!vif->chanctx_conf)
1392                 return;
1393
1394         if (!hwsim_chans_compat(data->channel,
1395                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1396                 return;
1397
1398         data->receive = true;
1399 }
1400
1401 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1402 {
1403         /*
1404          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1405          * e.g. like this:
1406          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1407          * (but you should use a valid OUI, not that)
1408          *
1409          * If anyone wants to 'donate' a radiotap OUI/subns code
1410          * please send a patch removing this #ifdef and changing
1411          * the values accordingly.
1412          */
1413 #ifdef HWSIM_RADIOTAP_OUI
1414         struct ieee80211_vendor_radiotap *rtap;
1415
1416         /*
1417          * Note that this code requires the headroom in the SKB
1418          * that was allocated earlier.
1419          */
1420         rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1421         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1422         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1423         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1424         rtap->subns = 127;
1425
1426         /*
1427          * Radiotap vendor namespaces can (and should) also be
1428          * split into fields by using the standard radiotap
1429          * presence bitmap mechanism. Use just BIT(0) here for
1430          * the presence bitmap.
1431          */
1432         rtap->present = BIT(0);
1433         /* We have 8 bytes of (dummy) data */
1434         rtap->len = 8;
1435         /* For testing, also require it to be aligned */
1436         rtap->align = 8;
1437         /* And also test that padding works, 4 bytes */
1438         rtap->pad = 4;
1439         /* push the data */
1440         memcpy(rtap->data, "ABCDEFGH", 8);
1441         /* make sure to clear padding, mac80211 doesn't */
1442         memset(rtap->data + 8, 0, 4);
1443
1444         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1445 #endif
1446 }
1447
1448 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1449                                           struct sk_buff *skb,
1450                                           struct ieee80211_channel *chan)
1451 {
1452         struct mac80211_hwsim_data *data = hw->priv, *data2;
1453         bool ack = false;
1454         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1455         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1456         struct ieee80211_rx_status rx_status;
1457         u64 now;
1458
1459         memset(&rx_status, 0, sizeof(rx_status));
1460         rx_status.flag |= RX_FLAG_MACTIME_START;
1461         rx_status.freq = chan->center_freq;
1462         rx_status.freq_offset = chan->freq_offset ? 1 : 0;
1463         rx_status.band = chan->band;
1464         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1465                 rx_status.rate_idx =
1466                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1467                 rx_status.nss =
1468                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1469                 rx_status.encoding = RX_ENC_VHT;
1470         } else {
1471                 rx_status.rate_idx = info->control.rates[0].idx;
1472                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1473                         rx_status.encoding = RX_ENC_HT;
1474         }
1475         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1476                 rx_status.bw = RATE_INFO_BW_40;
1477         else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1478                 rx_status.bw = RATE_INFO_BW_80;
1479         else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1480                 rx_status.bw = RATE_INFO_BW_160;
1481         else
1482                 rx_status.bw = RATE_INFO_BW_20;
1483         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1484                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1485         /* TODO: simulate real signal strength (and optional packet loss) */
1486         rx_status.signal = -50;
1487         if (info->control.vif)
1488                 rx_status.signal += info->control.vif->bss_conf.txpower;
1489
1490         if (data->ps != PS_DISABLED)
1491                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1492
1493         /* release the skb's source info */
1494         skb_orphan(skb);
1495         skb_dst_drop(skb);
1496         skb->mark = 0;
1497         skb_ext_reset(skb);
1498         nf_reset_ct(skb);
1499
1500         /*
1501          * Get absolute mactime here so all HWs RX at the "same time", and
1502          * absolute TX time for beacon mactime so the timestamp matches.
1503          * Giving beacons a different mactime than non-beacons looks messy, but
1504          * it helps the Toffset be exact and a ~10us mactime discrepancy
1505          * probably doesn't really matter.
1506          */
1507         if (ieee80211_is_beacon(hdr->frame_control) ||
1508             ieee80211_is_probe_resp(hdr->frame_control)) {
1509                 rx_status.boottime_ns = ktime_get_boottime_ns();
1510                 now = data->abs_bcn_ts;
1511         } else {
1512                 now = mac80211_hwsim_get_tsf_raw();
1513         }
1514
1515         /* Copy skb to all enabled radios that are on the current frequency */
1516         spin_lock(&hwsim_radio_lock);
1517         list_for_each_entry(data2, &hwsim_radios, list) {
1518                 struct sk_buff *nskb;
1519                 struct tx_iter_data tx_iter_data = {
1520                         .receive = false,
1521                         .channel = chan,
1522                 };
1523
1524                 if (data == data2)
1525                         continue;
1526
1527                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1528                     !hwsim_ps_rx_ok(data2, skb))
1529                         continue;
1530
1531                 if (!(data->group & data2->group))
1532                         continue;
1533
1534                 if (data->netgroup != data2->netgroup)
1535                         continue;
1536
1537                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1538                     !hwsim_chans_compat(chan, data2->channel)) {
1539                         ieee80211_iterate_active_interfaces_atomic(
1540                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1541                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1542                         if (!tx_iter_data.receive)
1543                                 continue;
1544                 }
1545
1546                 /*
1547                  * reserve some space for our vendor and the normal
1548                  * radiotap header, since we're copying anyway
1549                  */
1550                 if (skb->len < PAGE_SIZE && paged_rx) {
1551                         struct page *page = alloc_page(GFP_ATOMIC);
1552
1553                         if (!page)
1554                                 continue;
1555
1556                         nskb = dev_alloc_skb(128);
1557                         if (!nskb) {
1558                                 __free_page(page);
1559                                 continue;
1560                         }
1561
1562                         memcpy(page_address(page), skb->data, skb->len);
1563                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1564                 } else {
1565                         nskb = skb_copy(skb, GFP_ATOMIC);
1566                         if (!nskb)
1567                                 continue;
1568                 }
1569
1570                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1571                         ack = true;
1572
1573                 rx_status.mactime = now + data2->tsf_offset;
1574
1575                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1576
1577                 mac80211_hwsim_add_vendor_rtap(nskb);
1578
1579                 data2->rx_pkts++;
1580                 data2->rx_bytes += nskb->len;
1581                 ieee80211_rx_irqsafe(data2->hw, nskb);
1582         }
1583         spin_unlock(&hwsim_radio_lock);
1584
1585         return ack;
1586 }
1587
1588 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1589                               struct ieee80211_tx_control *control,
1590                               struct sk_buff *skb)
1591 {
1592         struct mac80211_hwsim_data *data = hw->priv;
1593         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1594         struct ieee80211_hdr *hdr = (void *)skb->data;
1595         struct ieee80211_chanctx_conf *chanctx_conf;
1596         struct ieee80211_channel *channel;
1597         bool ack;
1598         u32 _portid;
1599
1600         if (WARN_ON(skb->len < 10)) {
1601                 /* Should not happen; just a sanity check for addr1 use */
1602                 ieee80211_free_txskb(hw, skb);
1603                 return;
1604         }
1605
1606         if (!data->use_chanctx) {
1607                 channel = data->channel;
1608         } else if (txi->hw_queue == 4) {
1609                 channel = data->tmp_chan;
1610         } else {
1611                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1612                 if (chanctx_conf)
1613                         channel = chanctx_conf->def.chan;
1614                 else
1615                         channel = NULL;
1616         }
1617
1618         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1619                 ieee80211_free_txskb(hw, skb);
1620                 return;
1621         }
1622
1623         if (data->idle && !data->tmp_chan) {
1624                 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1625                 ieee80211_free_txskb(hw, skb);
1626                 return;
1627         }
1628
1629         if (txi->control.vif)
1630                 hwsim_check_magic(txi->control.vif);
1631         if (control->sta)
1632                 hwsim_check_sta_magic(control->sta);
1633
1634         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1635                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1636                                        txi->control.rates,
1637                                        ARRAY_SIZE(txi->control.rates));
1638
1639         if (skb->len >= 24 + 8 &&
1640             ieee80211_is_probe_resp(hdr->frame_control)) {
1641                 /* fake header transmission time */
1642                 struct ieee80211_mgmt *mgmt;
1643                 struct ieee80211_rate *txrate;
1644                 /* TODO: get MCS */
1645                 int bitrate = 100;
1646                 u64 ts;
1647
1648                 mgmt = (struct ieee80211_mgmt *)skb->data;
1649                 txrate = ieee80211_get_tx_rate(hw, txi);
1650                 if (txrate)
1651                         bitrate = txrate->bitrate;
1652                 ts = mac80211_hwsim_get_tsf_raw();
1653                 mgmt->u.probe_resp.timestamp =
1654                         cpu_to_le64(ts + data->tsf_offset +
1655                                     24 * 8 * 10 / bitrate);
1656         }
1657
1658         mac80211_hwsim_monitor_rx(hw, skb, channel);
1659
1660         /* wmediumd mode check */
1661         _portid = READ_ONCE(data->wmediumd);
1662
1663         if (_portid || hwsim_virtio_enabled)
1664                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid, channel);
1665
1666         /* NO wmediumd detected, perfect medium simulation */
1667         data->tx_pkts++;
1668         data->tx_bytes += skb->len;
1669         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1670
1671         if (ack && skb->len >= 16)
1672                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1673
1674         ieee80211_tx_info_clear_status(txi);
1675
1676         /* frame was transmitted at most favorable rate at first attempt */
1677         txi->control.rates[0].count = 1;
1678         txi->control.rates[1].idx = -1;
1679
1680         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1681                 txi->flags |= IEEE80211_TX_STAT_ACK;
1682         ieee80211_tx_status_irqsafe(hw, skb);
1683 }
1684
1685
1686 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1687 {
1688         struct mac80211_hwsim_data *data = hw->priv;
1689         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1690         data->started = true;
1691         return 0;
1692 }
1693
1694
1695 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1696 {
1697         struct mac80211_hwsim_data *data = hw->priv;
1698
1699         data->started = false;
1700         hrtimer_cancel(&data->beacon_timer);
1701
1702         while (!skb_queue_empty(&data->pending))
1703                 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1704
1705         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1706 }
1707
1708
1709 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1710                                         struct ieee80211_vif *vif)
1711 {
1712         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1713                   __func__, ieee80211_vif_type_p2p(vif),
1714                   vif->addr);
1715         hwsim_set_magic(vif);
1716
1717         if (vif->type != NL80211_IFTYPE_MONITOR)
1718                 mac80211_hwsim_config_mac_nl(hw, vif->addr, true);
1719
1720         vif->cab_queue = 0;
1721         vif->hw_queue[IEEE80211_AC_VO] = 0;
1722         vif->hw_queue[IEEE80211_AC_VI] = 1;
1723         vif->hw_queue[IEEE80211_AC_BE] = 2;
1724         vif->hw_queue[IEEE80211_AC_BK] = 3;
1725
1726         return 0;
1727 }
1728
1729
1730 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1731                                            struct ieee80211_vif *vif,
1732                                            enum nl80211_iftype newtype,
1733                                            bool newp2p)
1734 {
1735         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1736         wiphy_dbg(hw->wiphy,
1737                   "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1738                   __func__, ieee80211_vif_type_p2p(vif),
1739                     newtype, vif->addr);
1740         hwsim_check_magic(vif);
1741
1742         /*
1743          * interface may change from non-AP to AP in
1744          * which case this needs to be set up again
1745          */
1746         vif->cab_queue = 0;
1747
1748         return 0;
1749 }
1750
1751 static void mac80211_hwsim_remove_interface(
1752         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1753 {
1754         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1755                   __func__, ieee80211_vif_type_p2p(vif),
1756                   vif->addr);
1757         hwsim_check_magic(vif);
1758         hwsim_clear_magic(vif);
1759         if (vif->type != NL80211_IFTYPE_MONITOR)
1760                 mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
1761 }
1762
1763 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1764                                     struct sk_buff *skb,
1765                                     struct ieee80211_channel *chan)
1766 {
1767         struct mac80211_hwsim_data *data = hw->priv;
1768         u32 _pid = READ_ONCE(data->wmediumd);
1769
1770         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1771                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1772                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1773                                        txi->control.rates,
1774                                        ARRAY_SIZE(txi->control.rates));
1775         }
1776
1777         mac80211_hwsim_monitor_rx(hw, skb, chan);
1778
1779         if (_pid || hwsim_virtio_enabled)
1780                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid, chan);
1781
1782         data->tx_pkts++;
1783         data->tx_bytes += skb->len;
1784         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1785         dev_kfree_skb(skb);
1786 }
1787
1788 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1789                                      struct ieee80211_vif *vif)
1790 {
1791         struct mac80211_hwsim_data *data = arg;
1792         struct ieee80211_hw *hw = data->hw;
1793         struct ieee80211_tx_info *info;
1794         struct ieee80211_rate *txrate;
1795         struct ieee80211_mgmt *mgmt;
1796         struct sk_buff *skb;
1797         /* TODO: get MCS */
1798         int bitrate = 100;
1799
1800         hwsim_check_magic(vif);
1801
1802         if (vif->type != NL80211_IFTYPE_AP &&
1803             vif->type != NL80211_IFTYPE_MESH_POINT &&
1804             vif->type != NL80211_IFTYPE_ADHOC &&
1805             vif->type != NL80211_IFTYPE_OCB)
1806                 return;
1807
1808         skb = ieee80211_beacon_get(hw, vif);
1809         if (skb == NULL)
1810                 return;
1811         info = IEEE80211_SKB_CB(skb);
1812         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1813                 ieee80211_get_tx_rates(vif, NULL, skb,
1814                                        info->control.rates,
1815                                        ARRAY_SIZE(info->control.rates));
1816
1817         txrate = ieee80211_get_tx_rate(hw, info);
1818         if (txrate)
1819                 bitrate = txrate->bitrate;
1820
1821         mgmt = (struct ieee80211_mgmt *) skb->data;
1822         /* fake header transmission time */
1823         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1824         if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
1825                 struct ieee80211_ext *ext = (void *) mgmt;
1826
1827                 ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
1828                                                           data->tsf_offset +
1829                                                           10 * 8 * 10 /
1830                                                           bitrate);
1831         } else {
1832                 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1833                                                        data->tsf_offset +
1834                                                        24 * 8 * 10 /
1835                                                        bitrate);
1836         }
1837
1838         mac80211_hwsim_tx_frame(hw, skb,
1839                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1840
1841         while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
1842                 mac80211_hwsim_tx_frame(hw, skb,
1843                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1844         }
1845
1846         if (vif->csa_active && ieee80211_beacon_cntdwn_is_complete(vif))
1847                 ieee80211_csa_finish(vif);
1848 }
1849
1850 static enum hrtimer_restart
1851 mac80211_hwsim_beacon(struct hrtimer *timer)
1852 {
1853         struct mac80211_hwsim_data *data =
1854                 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1855         struct ieee80211_hw *hw = data->hw;
1856         u64 bcn_int = data->beacon_int;
1857
1858         if (!data->started)
1859                 return HRTIMER_NORESTART;
1860
1861         ieee80211_iterate_active_interfaces_atomic(
1862                 hw, IEEE80211_IFACE_ITER_NORMAL,
1863                 mac80211_hwsim_beacon_tx, data);
1864
1865         /* beacon at new TBTT + beacon interval */
1866         if (data->bcn_delta) {
1867                 bcn_int -= data->bcn_delta;
1868                 data->bcn_delta = 0;
1869         }
1870         hrtimer_forward_now(&data->beacon_timer,
1871                             ns_to_ktime(bcn_int * NSEC_PER_USEC));
1872         return HRTIMER_RESTART;
1873 }
1874
1875 static const char * const hwsim_chanwidths[] = {
1876         [NL80211_CHAN_WIDTH_5] = "ht5",
1877         [NL80211_CHAN_WIDTH_10] = "ht10",
1878         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1879         [NL80211_CHAN_WIDTH_20] = "ht20",
1880         [NL80211_CHAN_WIDTH_40] = "ht40",
1881         [NL80211_CHAN_WIDTH_80] = "vht80",
1882         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1883         [NL80211_CHAN_WIDTH_160] = "vht160",
1884         [NL80211_CHAN_WIDTH_1] = "1MHz",
1885         [NL80211_CHAN_WIDTH_2] = "2MHz",
1886         [NL80211_CHAN_WIDTH_4] = "4MHz",
1887         [NL80211_CHAN_WIDTH_8] = "8MHz",
1888         [NL80211_CHAN_WIDTH_16] = "16MHz",
1889 };
1890
1891 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1892 {
1893         struct mac80211_hwsim_data *data = hw->priv;
1894         struct ieee80211_conf *conf = &hw->conf;
1895         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1896                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1897                 [IEEE80211_SMPS_OFF] = "off",
1898                 [IEEE80211_SMPS_STATIC] = "static",
1899                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1900         };
1901         int idx;
1902
1903         if (conf->chandef.chan)
1904                 wiphy_dbg(hw->wiphy,
1905                           "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1906                           __func__,
1907                           conf->chandef.chan->center_freq,
1908                           conf->chandef.center_freq1,
1909                           conf->chandef.center_freq2,
1910                           hwsim_chanwidths[conf->chandef.width],
1911                           !!(conf->flags & IEEE80211_CONF_IDLE),
1912                           !!(conf->flags & IEEE80211_CONF_PS),
1913                           smps_modes[conf->smps_mode]);
1914         else
1915                 wiphy_dbg(hw->wiphy,
1916                           "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1917                           __func__,
1918                           !!(conf->flags & IEEE80211_CONF_IDLE),
1919                           !!(conf->flags & IEEE80211_CONF_PS),
1920                           smps_modes[conf->smps_mode]);
1921
1922         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1923
1924         WARN_ON(conf->chandef.chan && data->use_chanctx);
1925
1926         mutex_lock(&data->mutex);
1927         if (data->scanning && conf->chandef.chan) {
1928                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1929                         if (data->survey_data[idx].channel == data->channel) {
1930                                 data->survey_data[idx].start =
1931                                         data->survey_data[idx].next_start;
1932                                 data->survey_data[idx].end = jiffies;
1933                                 break;
1934                         }
1935                 }
1936
1937                 data->channel = conf->chandef.chan;
1938
1939                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1940                         if (data->survey_data[idx].channel &&
1941                             data->survey_data[idx].channel != data->channel)
1942                                 continue;
1943                         data->survey_data[idx].channel = data->channel;
1944                         data->survey_data[idx].next_start = jiffies;
1945                         break;
1946                 }
1947         } else {
1948                 data->channel = conf->chandef.chan;
1949         }
1950         mutex_unlock(&data->mutex);
1951
1952         if (!data->started || !data->beacon_int)
1953                 hrtimer_cancel(&data->beacon_timer);
1954         else if (!hrtimer_is_queued(&data->beacon_timer)) {
1955                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1956                 u32 bcn_int = data->beacon_int;
1957                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1958
1959                 hrtimer_start(&data->beacon_timer,
1960                               ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1961                               HRTIMER_MODE_REL_SOFT);
1962         }
1963
1964         return 0;
1965 }
1966
1967
1968 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1969                                             unsigned int changed_flags,
1970                                             unsigned int *total_flags,u64 multicast)
1971 {
1972         struct mac80211_hwsim_data *data = hw->priv;
1973
1974         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1975
1976         data->rx_filter = 0;
1977         if (*total_flags & FIF_ALLMULTI)
1978                 data->rx_filter |= FIF_ALLMULTI;
1979         if (*total_flags & FIF_MCAST_ACTION)
1980                 data->rx_filter |= FIF_MCAST_ACTION;
1981
1982         *total_flags = data->rx_filter;
1983 }
1984
1985 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1986                                        struct ieee80211_vif *vif)
1987 {
1988         unsigned int *count = data;
1989         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1990
1991         if (vp->bcn_en)
1992                 (*count)++;
1993 }
1994
1995 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1996                                             struct ieee80211_vif *vif,
1997                                             struct ieee80211_bss_conf *info,
1998                                             u32 changed)
1999 {
2000         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
2001         struct mac80211_hwsim_data *data = hw->priv;
2002
2003         hwsim_check_magic(vif);
2004
2005         wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
2006                   __func__, changed, vif->addr);
2007
2008         if (changed & BSS_CHANGED_BSSID) {
2009                 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
2010                           __func__, info->bssid);
2011                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
2012         }
2013
2014         if (changed & BSS_CHANGED_ASSOC) {
2015                 wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
2016                           info->assoc, info->aid);
2017                 vp->assoc = info->assoc;
2018                 vp->aid = info->aid;
2019         }
2020
2021         if (changed & BSS_CHANGED_BEACON_ENABLED) {
2022                 wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
2023                           info->enable_beacon, info->beacon_int);
2024                 vp->bcn_en = info->enable_beacon;
2025                 if (data->started &&
2026                     !hrtimer_is_queued(&data->beacon_timer) &&
2027                     info->enable_beacon) {
2028                         u64 tsf, until_tbtt;
2029                         u32 bcn_int;
2030                         data->beacon_int = info->beacon_int * 1024;
2031                         tsf = mac80211_hwsim_get_tsf(hw, vif);
2032                         bcn_int = data->beacon_int;
2033                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
2034
2035                         hrtimer_start(&data->beacon_timer,
2036                                       ns_to_ktime(until_tbtt * NSEC_PER_USEC),
2037                                       HRTIMER_MODE_REL_SOFT);
2038                 } else if (!info->enable_beacon) {
2039                         unsigned int count = 0;
2040                         ieee80211_iterate_active_interfaces_atomic(
2041                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
2042                                 mac80211_hwsim_bcn_en_iter, &count);
2043                         wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
2044                                   count);
2045                         if (count == 0) {
2046                                 hrtimer_cancel(&data->beacon_timer);
2047                                 data->beacon_int = 0;
2048                         }
2049                 }
2050         }
2051
2052         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2053                 wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
2054                           info->use_cts_prot);
2055         }
2056
2057         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2058                 wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
2059                           info->use_short_preamble);
2060         }
2061
2062         if (changed & BSS_CHANGED_ERP_SLOT) {
2063                 wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
2064         }
2065
2066         if (changed & BSS_CHANGED_HT) {
2067                 wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
2068                           info->ht_operation_mode);
2069         }
2070
2071         if (changed & BSS_CHANGED_BASIC_RATES) {
2072                 wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
2073                           (unsigned long long) info->basic_rates);
2074         }
2075
2076         if (changed & BSS_CHANGED_TXPOWER)
2077                 wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
2078 }
2079
2080 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
2081                                   struct ieee80211_vif *vif,
2082                                   struct ieee80211_sta *sta)
2083 {
2084         hwsim_check_magic(vif);
2085         hwsim_set_sta_magic(sta);
2086
2087         return 0;
2088 }
2089
2090 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
2091                                      struct ieee80211_vif *vif,
2092                                      struct ieee80211_sta *sta)
2093 {
2094         hwsim_check_magic(vif);
2095         hwsim_clear_sta_magic(sta);
2096
2097         return 0;
2098 }
2099
2100 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
2101                                       struct ieee80211_vif *vif,
2102                                       enum sta_notify_cmd cmd,
2103                                       struct ieee80211_sta *sta)
2104 {
2105         hwsim_check_magic(vif);
2106
2107         switch (cmd) {
2108         case STA_NOTIFY_SLEEP:
2109         case STA_NOTIFY_AWAKE:
2110                 /* TODO: make good use of these flags */
2111                 break;
2112         default:
2113                 WARN(1, "Invalid sta notify: %d\n", cmd);
2114                 break;
2115         }
2116 }
2117
2118 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
2119                                   struct ieee80211_sta *sta,
2120                                   bool set)
2121 {
2122         hwsim_check_sta_magic(sta);
2123         return 0;
2124 }
2125
2126 static int mac80211_hwsim_conf_tx(
2127         struct ieee80211_hw *hw,
2128         struct ieee80211_vif *vif, u16 queue,
2129         const struct ieee80211_tx_queue_params *params)
2130 {
2131         wiphy_dbg(hw->wiphy,
2132                   "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
2133                   __func__, queue,
2134                   params->txop, params->cw_min,
2135                   params->cw_max, params->aifs);
2136         return 0;
2137 }
2138
2139 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
2140                                      struct survey_info *survey)
2141 {
2142         struct mac80211_hwsim_data *hwsim = hw->priv;
2143
2144         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
2145                 return -ENOENT;
2146
2147         mutex_lock(&hwsim->mutex);
2148         survey->channel = hwsim->survey_data[idx].channel;
2149         if (!survey->channel) {
2150                 mutex_unlock(&hwsim->mutex);
2151                 return -ENOENT;
2152         }
2153
2154         /*
2155          * Magically conjured dummy values --- this is only ok for simulated hardware.
2156          *
2157          * A real driver which cannot determine real values noise MUST NOT
2158          * report any, especially not a magically conjured ones :-)
2159          */
2160         survey->filled = SURVEY_INFO_NOISE_DBM |
2161                          SURVEY_INFO_TIME |
2162                          SURVEY_INFO_TIME_BUSY;
2163         survey->noise = -92;
2164         survey->time =
2165                 jiffies_to_msecs(hwsim->survey_data[idx].end -
2166                                  hwsim->survey_data[idx].start);
2167         /* report 12.5% of channel time is used */
2168         survey->time_busy = survey->time/8;
2169         mutex_unlock(&hwsim->mutex);
2170
2171         return 0;
2172 }
2173
2174 #ifdef CONFIG_NL80211_TESTMODE
2175 /*
2176  * This section contains example code for using netlink
2177  * attributes with the testmode command in nl80211.
2178  */
2179
2180 /* These enums need to be kept in sync with userspace */
2181 enum hwsim_testmode_attr {
2182         __HWSIM_TM_ATTR_INVALID = 0,
2183         HWSIM_TM_ATTR_CMD       = 1,
2184         HWSIM_TM_ATTR_PS        = 2,
2185
2186         /* keep last */
2187         __HWSIM_TM_ATTR_AFTER_LAST,
2188         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
2189 };
2190
2191 enum hwsim_testmode_cmd {
2192         HWSIM_TM_CMD_SET_PS             = 0,
2193         HWSIM_TM_CMD_GET_PS             = 1,
2194         HWSIM_TM_CMD_STOP_QUEUES        = 2,
2195         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
2196 };
2197
2198 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
2199         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
2200         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
2201 };
2202
2203 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
2204                                        struct ieee80211_vif *vif,
2205                                        void *data, int len)
2206 {
2207         struct mac80211_hwsim_data *hwsim = hw->priv;
2208         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
2209         struct sk_buff *skb;
2210         int err, ps;
2211
2212         err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
2213                                    hwsim_testmode_policy, NULL);
2214         if (err)
2215                 return err;
2216
2217         if (!tb[HWSIM_TM_ATTR_CMD])
2218                 return -EINVAL;
2219
2220         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
2221         case HWSIM_TM_CMD_SET_PS:
2222                 if (!tb[HWSIM_TM_ATTR_PS])
2223                         return -EINVAL;
2224                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
2225                 return hwsim_fops_ps_write(hwsim, ps);
2226         case HWSIM_TM_CMD_GET_PS:
2227                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
2228                                                 nla_total_size(sizeof(u32)));
2229                 if (!skb)
2230                         return -ENOMEM;
2231                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
2232                         goto nla_put_failure;
2233                 return cfg80211_testmode_reply(skb);
2234         case HWSIM_TM_CMD_STOP_QUEUES:
2235                 ieee80211_stop_queues(hw);
2236                 return 0;
2237         case HWSIM_TM_CMD_WAKE_QUEUES:
2238                 ieee80211_wake_queues(hw);
2239                 return 0;
2240         default:
2241                 return -EOPNOTSUPP;
2242         }
2243
2244  nla_put_failure:
2245         kfree_skb(skb);
2246         return -ENOBUFS;
2247 }
2248 #endif
2249
2250 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
2251                                        struct ieee80211_vif *vif,
2252                                        struct ieee80211_ampdu_params *params)
2253 {
2254         struct ieee80211_sta *sta = params->sta;
2255         enum ieee80211_ampdu_mlme_action action = params->action;
2256         u16 tid = params->tid;
2257
2258         switch (action) {
2259         case IEEE80211_AMPDU_TX_START:
2260                 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
2261         case IEEE80211_AMPDU_TX_STOP_CONT:
2262         case IEEE80211_AMPDU_TX_STOP_FLUSH:
2263         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2264                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2265                 break;
2266         case IEEE80211_AMPDU_TX_OPERATIONAL:
2267                 break;
2268         case IEEE80211_AMPDU_RX_START:
2269         case IEEE80211_AMPDU_RX_STOP:
2270                 break;
2271         default:
2272                 return -EOPNOTSUPP;
2273         }
2274
2275         return 0;
2276 }
2277
2278 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2279                                  struct ieee80211_vif *vif,
2280                                  u32 queues, bool drop)
2281 {
2282         /* Not implemented, queues only on kernel side */
2283 }
2284
2285 static void hw_scan_work(struct work_struct *work)
2286 {
2287         struct mac80211_hwsim_data *hwsim =
2288                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2289         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2290         int dwell, i;
2291
2292         mutex_lock(&hwsim->mutex);
2293         if (hwsim->scan_chan_idx >= req->n_channels) {
2294                 struct cfg80211_scan_info info = {
2295                         .aborted = false,
2296                 };
2297
2298                 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2299                 ieee80211_scan_completed(hwsim->hw, &info);
2300                 hwsim->hw_scan_request = NULL;
2301                 hwsim->hw_scan_vif = NULL;
2302                 hwsim->tmp_chan = NULL;
2303                 mutex_unlock(&hwsim->mutex);
2304                 mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
2305                                              false);
2306                 return;
2307         }
2308
2309         wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2310                   req->channels[hwsim->scan_chan_idx]->center_freq);
2311
2312         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2313         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2314                                       IEEE80211_CHAN_RADAR) ||
2315             !req->n_ssids) {
2316                 dwell = 120;
2317         } else {
2318                 dwell = 30;
2319                 /* send probes */
2320                 for (i = 0; i < req->n_ssids; i++) {
2321                         struct sk_buff *probe;
2322                         struct ieee80211_mgmt *mgmt;
2323
2324                         probe = ieee80211_probereq_get(hwsim->hw,
2325                                                        hwsim->scan_addr,
2326                                                        req->ssids[i].ssid,
2327                                                        req->ssids[i].ssid_len,
2328                                                        req->ie_len);
2329                         if (!probe)
2330                                 continue;
2331
2332                         mgmt = (struct ieee80211_mgmt *) probe->data;
2333                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2334                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2335
2336                         if (req->ie_len)
2337                                 skb_put_data(probe, req->ie, req->ie_len);
2338
2339                         local_bh_disable();
2340                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2341                                                 hwsim->tmp_chan);
2342                         local_bh_enable();
2343                 }
2344         }
2345         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2346                                      msecs_to_jiffies(dwell));
2347         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2348         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2349         hwsim->survey_data[hwsim->scan_chan_idx].end =
2350                 jiffies + msecs_to_jiffies(dwell);
2351         hwsim->scan_chan_idx++;
2352         mutex_unlock(&hwsim->mutex);
2353 }
2354
2355 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2356                                   struct ieee80211_vif *vif,
2357                                   struct ieee80211_scan_request *hw_req)
2358 {
2359         struct mac80211_hwsim_data *hwsim = hw->priv;
2360         struct cfg80211_scan_request *req = &hw_req->req;
2361
2362         mutex_lock(&hwsim->mutex);
2363         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2364                 mutex_unlock(&hwsim->mutex);
2365                 return -EBUSY;
2366         }
2367         hwsim->hw_scan_request = req;
2368         hwsim->hw_scan_vif = vif;
2369         hwsim->scan_chan_idx = 0;
2370         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2371                 get_random_mask_addr(hwsim->scan_addr,
2372                                      hw_req->req.mac_addr,
2373                                      hw_req->req.mac_addr_mask);
2374         else
2375                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2376         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2377         mutex_unlock(&hwsim->mutex);
2378
2379         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2380         wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2381
2382         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2383
2384         return 0;
2385 }
2386
2387 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2388                                           struct ieee80211_vif *vif)
2389 {
2390         struct mac80211_hwsim_data *hwsim = hw->priv;
2391         struct cfg80211_scan_info info = {
2392                 .aborted = true,
2393         };
2394
2395         wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2396
2397         cancel_delayed_work_sync(&hwsim->hw_scan);
2398
2399         mutex_lock(&hwsim->mutex);
2400         ieee80211_scan_completed(hwsim->hw, &info);
2401         hwsim->tmp_chan = NULL;
2402         hwsim->hw_scan_request = NULL;
2403         hwsim->hw_scan_vif = NULL;
2404         mutex_unlock(&hwsim->mutex);
2405 }
2406
2407 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2408                                    struct ieee80211_vif *vif,
2409                                    const u8 *mac_addr)
2410 {
2411         struct mac80211_hwsim_data *hwsim = hw->priv;
2412
2413         mutex_lock(&hwsim->mutex);
2414
2415         if (hwsim->scanning) {
2416                 pr_debug("two hwsim sw_scans detected!\n");
2417                 goto out;
2418         }
2419
2420         pr_debug("hwsim sw_scan request, prepping stuff\n");
2421
2422         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2423         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2424         hwsim->scanning = true;
2425         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2426
2427 out:
2428         mutex_unlock(&hwsim->mutex);
2429 }
2430
2431 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2432                                             struct ieee80211_vif *vif)
2433 {
2434         struct mac80211_hwsim_data *hwsim = hw->priv;
2435
2436         mutex_lock(&hwsim->mutex);
2437
2438         pr_debug("hwsim sw_scan_complete\n");
2439         hwsim->scanning = false;
2440         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
2441         eth_zero_addr(hwsim->scan_addr);
2442
2443         mutex_unlock(&hwsim->mutex);
2444 }
2445
2446 static void hw_roc_start(struct work_struct *work)
2447 {
2448         struct mac80211_hwsim_data *hwsim =
2449                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2450
2451         mutex_lock(&hwsim->mutex);
2452
2453         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2454         hwsim->tmp_chan = hwsim->roc_chan;
2455         ieee80211_ready_on_channel(hwsim->hw);
2456
2457         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2458                                      msecs_to_jiffies(hwsim->roc_duration));
2459
2460         mutex_unlock(&hwsim->mutex);
2461 }
2462
2463 static void hw_roc_done(struct work_struct *work)
2464 {
2465         struct mac80211_hwsim_data *hwsim =
2466                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2467
2468         mutex_lock(&hwsim->mutex);
2469         ieee80211_remain_on_channel_expired(hwsim->hw);
2470         hwsim->tmp_chan = NULL;
2471         mutex_unlock(&hwsim->mutex);
2472
2473         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2474 }
2475
2476 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2477                               struct ieee80211_vif *vif,
2478                               struct ieee80211_channel *chan,
2479                               int duration,
2480                               enum ieee80211_roc_type type)
2481 {
2482         struct mac80211_hwsim_data *hwsim = hw->priv;
2483
2484         mutex_lock(&hwsim->mutex);
2485         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2486                 mutex_unlock(&hwsim->mutex);
2487                 return -EBUSY;
2488         }
2489
2490         hwsim->roc_chan = chan;
2491         hwsim->roc_duration = duration;
2492         mutex_unlock(&hwsim->mutex);
2493
2494         wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2495                   chan->center_freq, duration);
2496         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2497
2498         return 0;
2499 }
2500
2501 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2502                                struct ieee80211_vif *vif)
2503 {
2504         struct mac80211_hwsim_data *hwsim = hw->priv;
2505
2506         cancel_delayed_work_sync(&hwsim->roc_start);
2507         cancel_delayed_work_sync(&hwsim->roc_done);
2508
2509         mutex_lock(&hwsim->mutex);
2510         hwsim->tmp_chan = NULL;
2511         mutex_unlock(&hwsim->mutex);
2512
2513         wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2514
2515         return 0;
2516 }
2517
2518 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2519                                       struct ieee80211_chanctx_conf *ctx)
2520 {
2521         struct mac80211_hwsim_data *hwsim = hw->priv;
2522
2523         mutex_lock(&hwsim->mutex);
2524         hwsim->chanctx = ctx;
2525         mutex_unlock(&hwsim->mutex);
2526         hwsim_set_chanctx_magic(ctx);
2527         wiphy_dbg(hw->wiphy,
2528                   "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2529                   ctx->def.chan->center_freq, ctx->def.width,
2530                   ctx->def.center_freq1, ctx->def.center_freq2);
2531         return 0;
2532 }
2533
2534 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2535                                           struct ieee80211_chanctx_conf *ctx)
2536 {
2537         struct mac80211_hwsim_data *hwsim = hw->priv;
2538
2539         mutex_lock(&hwsim->mutex);
2540         hwsim->chanctx = NULL;
2541         mutex_unlock(&hwsim->mutex);
2542         wiphy_dbg(hw->wiphy,
2543                   "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2544                   ctx->def.chan->center_freq, ctx->def.width,
2545                   ctx->def.center_freq1, ctx->def.center_freq2);
2546         hwsim_check_chanctx_magic(ctx);
2547         hwsim_clear_chanctx_magic(ctx);
2548 }
2549
2550 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2551                                           struct ieee80211_chanctx_conf *ctx,
2552                                           u32 changed)
2553 {
2554         struct mac80211_hwsim_data *hwsim = hw->priv;
2555
2556         mutex_lock(&hwsim->mutex);
2557         hwsim->chanctx = ctx;
2558         mutex_unlock(&hwsim->mutex);
2559         hwsim_check_chanctx_magic(ctx);
2560         wiphy_dbg(hw->wiphy,
2561                   "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2562                   ctx->def.chan->center_freq, ctx->def.width,
2563                   ctx->def.center_freq1, ctx->def.center_freq2);
2564 }
2565
2566 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2567                                              struct ieee80211_vif *vif,
2568                                              struct ieee80211_chanctx_conf *ctx)
2569 {
2570         hwsim_check_magic(vif);
2571         hwsim_check_chanctx_magic(ctx);
2572
2573         return 0;
2574 }
2575
2576 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2577                                                 struct ieee80211_vif *vif,
2578                                                 struct ieee80211_chanctx_conf *ctx)
2579 {
2580         hwsim_check_magic(vif);
2581         hwsim_check_chanctx_magic(ctx);
2582 }
2583
2584 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2585         "tx_pkts_nic",
2586         "tx_bytes_nic",
2587         "rx_pkts_nic",
2588         "rx_bytes_nic",
2589         "d_tx_dropped",
2590         "d_tx_failed",
2591         "d_ps_mode",
2592         "d_group",
2593 };
2594
2595 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2596
2597 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2598                                           struct ieee80211_vif *vif,
2599                                           u32 sset, u8 *data)
2600 {
2601         if (sset == ETH_SS_STATS)
2602                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2603                        sizeof(mac80211_hwsim_gstrings_stats));
2604 }
2605
2606 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2607                                             struct ieee80211_vif *vif, int sset)
2608 {
2609         if (sset == ETH_SS_STATS)
2610                 return MAC80211_HWSIM_SSTATS_LEN;
2611         return 0;
2612 }
2613
2614 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2615                                         struct ieee80211_vif *vif,
2616                                         struct ethtool_stats *stats, u64 *data)
2617 {
2618         struct mac80211_hwsim_data *ar = hw->priv;
2619         int i = 0;
2620
2621         data[i++] = ar->tx_pkts;
2622         data[i++] = ar->tx_bytes;
2623         data[i++] = ar->rx_pkts;
2624         data[i++] = ar->rx_bytes;
2625         data[i++] = ar->tx_dropped;
2626         data[i++] = ar->tx_failed;
2627         data[i++] = ar->ps;
2628         data[i++] = ar->group;
2629
2630         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2631 }
2632
2633 static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
2634 {
2635         return 1;
2636 }
2637
2638 #define HWSIM_COMMON_OPS                                        \
2639         .tx = mac80211_hwsim_tx,                                \
2640         .start = mac80211_hwsim_start,                          \
2641         .stop = mac80211_hwsim_stop,                            \
2642         .add_interface = mac80211_hwsim_add_interface,          \
2643         .change_interface = mac80211_hwsim_change_interface,    \
2644         .remove_interface = mac80211_hwsim_remove_interface,    \
2645         .config = mac80211_hwsim_config,                        \
2646         .configure_filter = mac80211_hwsim_configure_filter,    \
2647         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2648         .tx_last_beacon = mac80211_hwsim_tx_last_beacon,        \
2649         .sta_add = mac80211_hwsim_sta_add,                      \
2650         .sta_remove = mac80211_hwsim_sta_remove,                \
2651         .sta_notify = mac80211_hwsim_sta_notify,                \
2652         .set_tim = mac80211_hwsim_set_tim,                      \
2653         .conf_tx = mac80211_hwsim_conf_tx,                      \
2654         .get_survey = mac80211_hwsim_get_survey,                \
2655         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2656         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2657         .flush = mac80211_hwsim_flush,                          \
2658         .get_tsf = mac80211_hwsim_get_tsf,                      \
2659         .set_tsf = mac80211_hwsim_set_tsf,                      \
2660         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2661         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2662         .get_et_strings = mac80211_hwsim_get_et_strings,
2663
2664 static const struct ieee80211_ops mac80211_hwsim_ops = {
2665         HWSIM_COMMON_OPS
2666         .sw_scan_start = mac80211_hwsim_sw_scan,
2667         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2668 };
2669
2670 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2671         HWSIM_COMMON_OPS
2672         .hw_scan = mac80211_hwsim_hw_scan,
2673         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2674         .sw_scan_start = NULL,
2675         .sw_scan_complete = NULL,
2676         .remain_on_channel = mac80211_hwsim_roc,
2677         .cancel_remain_on_channel = mac80211_hwsim_croc,
2678         .add_chanctx = mac80211_hwsim_add_chanctx,
2679         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2680         .change_chanctx = mac80211_hwsim_change_chanctx,
2681         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2682         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2683 };
2684
2685 struct hwsim_new_radio_params {
2686         unsigned int channels;
2687         const char *reg_alpha2;
2688         const struct ieee80211_regdomain *regd;
2689         bool reg_strict;
2690         bool p2p_device;
2691         bool use_chanctx;
2692         bool destroy_on_close;
2693         const char *hwname;
2694         bool no_vif;
2695         const u8 *perm_addr;
2696         u32 iftypes;
2697         u32 *ciphers;
2698         u8 n_ciphers;
2699 };
2700
2701 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2702                                    struct genl_info *info)
2703 {
2704         if (info)
2705                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2706                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2707         else
2708                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2709                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2710 }
2711
2712 static int append_radio_msg(struct sk_buff *skb, int id,
2713                             struct hwsim_new_radio_params *param)
2714 {
2715         int ret;
2716
2717         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2718         if (ret < 0)
2719                 return ret;
2720
2721         if (param->channels) {
2722                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2723                 if (ret < 0)
2724                         return ret;
2725         }
2726
2727         if (param->reg_alpha2) {
2728                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2729                               param->reg_alpha2);
2730                 if (ret < 0)
2731                         return ret;
2732         }
2733
2734         if (param->regd) {
2735                 int i;
2736
2737                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2738                         if (hwsim_world_regdom_custom[i] != param->regd)
2739                                 continue;
2740
2741                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2742                         if (ret < 0)
2743                                 return ret;
2744                         break;
2745                 }
2746         }
2747
2748         if (param->reg_strict) {
2749                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2750                 if (ret < 0)
2751                         return ret;
2752         }
2753
2754         if (param->p2p_device) {
2755                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2756                 if (ret < 0)
2757                         return ret;
2758         }
2759
2760         if (param->use_chanctx) {
2761                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2762                 if (ret < 0)
2763                         return ret;
2764         }
2765
2766         if (param->hwname) {
2767                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2768                               strlen(param->hwname), param->hwname);
2769                 if (ret < 0)
2770                         return ret;
2771         }
2772
2773         return 0;
2774 }
2775
2776 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2777                                   struct hwsim_new_radio_params *param)
2778 {
2779         struct sk_buff *mcast_skb;
2780         void *data;
2781
2782         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2783         if (!mcast_skb)
2784                 return;
2785
2786         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2787                            HWSIM_CMD_NEW_RADIO);
2788         if (!data)
2789                 goto out_err;
2790
2791         if (append_radio_msg(mcast_skb, id, param) < 0)
2792                 goto out_err;
2793
2794         genlmsg_end(mcast_skb, data);
2795
2796         hwsim_mcast_config_msg(mcast_skb, info);
2797         return;
2798
2799 out_err:
2800         nlmsg_free(mcast_skb);
2801 }
2802
2803 static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2804         {
2805                 /* TODO: should we support other types, e.g., P2P?*/
2806                 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2807                               BIT(NL80211_IFTYPE_AP),
2808                 .he_cap = {
2809                         .has_he = true,
2810                         .he_cap_elem = {
2811                                 .mac_cap_info[0] =
2812                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2813                                 .mac_cap_info[1] =
2814                                         IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2815                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2816                                 .mac_cap_info[2] =
2817                                         IEEE80211_HE_MAC_CAP2_BSR |
2818                                         IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2819                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2820                                 .mac_cap_info[3] =
2821                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2822                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
2823                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
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(0xffff),
2845                                 .tx_mcs_160 = cpu_to_le16(0xffff),
2846                                 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2847                                 .tx_mcs_80p80 = cpu_to_le16(0xffff),
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_EXT_3,
2867                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
2868                                 .phy_cap_info[1] =
2869                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2870                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2871                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2872                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2873                                 .phy_cap_info[2] = 0,
2874
2875                                 /* Leave all the other PHY capability bytes
2876                                  * unset, as DCM, beam forming, RU and PPE
2877                                  * threshold information are not supported
2878                                  */
2879                         },
2880                         .he_mcs_nss_supp = {
2881                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2882                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2883                                 .rx_mcs_160 = cpu_to_le16(0xffff),
2884                                 .tx_mcs_160 = cpu_to_le16(0xffff),
2885                                 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2886                                 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2887                         },
2888                 },
2889         },
2890 #endif
2891 };
2892
2893 static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2894         {
2895                 /* TODO: should we support other types, e.g., P2P?*/
2896                 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2897                               BIT(NL80211_IFTYPE_AP),
2898                 .he_cap = {
2899                         .has_he = true,
2900                         .he_cap_elem = {
2901                                 .mac_cap_info[0] =
2902                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2903                                 .mac_cap_info[1] =
2904                                         IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2905                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2906                                 .mac_cap_info[2] =
2907                                         IEEE80211_HE_MAC_CAP2_BSR |
2908                                         IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2909                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2910                                 .mac_cap_info[3] =
2911                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2912                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
2913                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
2914                                 .phy_cap_info[0] =
2915                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2916                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2917                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2918                                 .phy_cap_info[1] =
2919                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2920                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2921                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2922                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2923                                 .phy_cap_info[2] =
2924                                         IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2925                                         IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2926                                         IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2927                                         IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2928                                         IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2929
2930                                 /* Leave all the other PHY capability bytes
2931                                  * unset, as DCM, beam forming, RU and PPE
2932                                  * threshold information are not supported
2933                                  */
2934                         },
2935                         .he_mcs_nss_supp = {
2936                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2937                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2938                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
2939                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
2940                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2941                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2942                         },
2943                 },
2944         },
2945 #ifdef CONFIG_MAC80211_MESH
2946         {
2947                 /* TODO: should we support other types, e.g., IBSS?*/
2948                 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2949                 .he_cap = {
2950                         .has_he = true,
2951                         .he_cap_elem = {
2952                                 .mac_cap_info[0] =
2953                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2954                                 .mac_cap_info[1] =
2955                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2956                                 .mac_cap_info[2] =
2957                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2958                                 .mac_cap_info[3] =
2959                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2960                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
2961                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
2962                                 .phy_cap_info[0] =
2963                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2964                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2965                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2966                                 .phy_cap_info[1] =
2967                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2968                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2969                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2970                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2971                                 .phy_cap_info[2] = 0,
2972
2973                                 /* Leave all the other PHY capability bytes
2974                                  * unset, as DCM, beam forming, RU and PPE
2975                                  * threshold information are not supported
2976                                  */
2977                         },
2978                         .he_mcs_nss_supp = {
2979                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2980                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2981                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
2982                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
2983                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2984                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2985                         },
2986                 },
2987         },
2988 #endif
2989 };
2990
2991 static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2992 {
2993         u16 n_iftype_data;
2994
2995         if (sband->band == NL80211_BAND_2GHZ) {
2996                 n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2997                 sband->iftype_data =
2998                         (struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2999         } else if (sband->band == NL80211_BAND_5GHZ) {
3000                 n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
3001                 sband->iftype_data =
3002                         (struct ieee80211_sband_iftype_data *)he_capa_5ghz;
3003         } else {
3004                 return;
3005         }
3006
3007         sband->n_iftype_data = n_iftype_data;
3008 }
3009
3010 #ifdef CONFIG_MAC80211_MESH
3011 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
3012 #else
3013 #define HWSIM_MESH_BIT 0
3014 #endif
3015
3016 #define HWSIM_DEFAULT_IF_LIMIT \
3017         (BIT(NL80211_IFTYPE_STATION) | \
3018          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
3019          BIT(NL80211_IFTYPE_AP) | \
3020          BIT(NL80211_IFTYPE_P2P_GO) | \
3021          HWSIM_MESH_BIT)
3022
3023 #define HWSIM_IFTYPE_SUPPORT_MASK \
3024         (BIT(NL80211_IFTYPE_STATION) | \
3025          BIT(NL80211_IFTYPE_AP) | \
3026          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
3027          BIT(NL80211_IFTYPE_P2P_GO) | \
3028          BIT(NL80211_IFTYPE_ADHOC) | \
3029          BIT(NL80211_IFTYPE_MESH_POINT) | \
3030          BIT(NL80211_IFTYPE_OCB))
3031
3032 static int mac80211_hwsim_new_radio(struct genl_info *info,
3033                                     struct hwsim_new_radio_params *param)
3034 {
3035         int err;
3036         u8 addr[ETH_ALEN];
3037         struct mac80211_hwsim_data *data;
3038         struct ieee80211_hw *hw;
3039         enum nl80211_band band;
3040         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
3041         struct net *net;
3042         int idx, i;
3043         int n_limits = 0;
3044
3045         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
3046                 return -EINVAL;
3047
3048         spin_lock_bh(&hwsim_radio_lock);
3049         idx = hwsim_radio_idx++;
3050         spin_unlock_bh(&hwsim_radio_lock);
3051
3052         if (param->use_chanctx)
3053                 ops = &mac80211_hwsim_mchan_ops;
3054         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
3055         if (!hw) {
3056                 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
3057                 err = -ENOMEM;
3058                 goto failed;
3059         }
3060
3061         /* ieee80211_alloc_hw_nm may have used a default name */
3062         param->hwname = wiphy_name(hw->wiphy);
3063
3064         if (info)
3065                 net = genl_info_net(info);
3066         else
3067                 net = &init_net;
3068         wiphy_net_set(hw->wiphy, net);
3069
3070         data = hw->priv;
3071         data->hw = hw;
3072
3073         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
3074         if (IS_ERR(data->dev)) {
3075                 printk(KERN_DEBUG
3076                        "mac80211_hwsim: device_create failed (%ld)\n",
3077                        PTR_ERR(data->dev));
3078                 err = -ENOMEM;
3079                 goto failed_drvdata;
3080         }
3081         data->dev->driver = &mac80211_hwsim_driver.driver;
3082         err = device_bind_driver(data->dev);
3083         if (err != 0) {
3084                 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
3085                        err);
3086                 goto failed_bind;
3087         }
3088
3089         skb_queue_head_init(&data->pending);
3090
3091         SET_IEEE80211_DEV(hw, data->dev);
3092         if (!param->perm_addr) {
3093                 eth_zero_addr(addr);
3094                 addr[0] = 0x02;
3095                 addr[3] = idx >> 8;
3096                 addr[4] = idx;
3097                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
3098                 /* Why need here second address ? */
3099                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
3100                 data->addresses[1].addr[0] |= 0x40;
3101                 hw->wiphy->n_addresses = 2;
3102                 hw->wiphy->addresses = data->addresses;
3103                 /* possible address clash is checked at hash table insertion */
3104         } else {
3105                 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
3106                 /* compatibility with automatically generated mac addr */
3107                 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
3108                 hw->wiphy->n_addresses = 2;
3109                 hw->wiphy->addresses = data->addresses;
3110         }
3111
3112         data->channels = param->channels;
3113         data->use_chanctx = param->use_chanctx;
3114         data->idx = idx;
3115         data->destroy_on_close = param->destroy_on_close;
3116         if (info)
3117                 data->portid = info->snd_portid;
3118
3119         /* setup interface limits, only on interface types we support */
3120         if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
3121                 data->if_limits[n_limits].max = 1;
3122                 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
3123                 n_limits++;
3124         }
3125
3126         if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
3127                 data->if_limits[n_limits].max = 2048;
3128                 /*
3129                  * For this case, we may only support a subset of
3130                  * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
3131                  * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
3132                  */
3133                 data->if_limits[n_limits].types =
3134                                         HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
3135                 n_limits++;
3136         }
3137
3138         if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3139                 data->if_limits[n_limits].max = 1;
3140                 data->if_limits[n_limits].types =
3141                                                 BIT(NL80211_IFTYPE_P2P_DEVICE);
3142                 n_limits++;
3143         }
3144
3145         if (data->use_chanctx) {
3146                 hw->wiphy->max_scan_ssids = 255;
3147                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
3148                 hw->wiphy->max_remain_on_channel_duration = 1000;
3149                 data->if_combination.radar_detect_widths = 0;
3150                 data->if_combination.num_different_channels = data->channels;
3151                 data->chanctx = NULL;
3152         } else {
3153                 data->if_combination.num_different_channels = 1;
3154                 data->if_combination.radar_detect_widths =
3155                                         BIT(NL80211_CHAN_WIDTH_5) |
3156                                         BIT(NL80211_CHAN_WIDTH_10) |
3157                                         BIT(NL80211_CHAN_WIDTH_20_NOHT) |
3158                                         BIT(NL80211_CHAN_WIDTH_20) |
3159                                         BIT(NL80211_CHAN_WIDTH_40) |
3160                                         BIT(NL80211_CHAN_WIDTH_80) |
3161                                         BIT(NL80211_CHAN_WIDTH_160);
3162         }
3163
3164         if (!n_limits) {
3165                 err = -EINVAL;
3166                 goto failed_hw;
3167         }
3168
3169         data->if_combination.max_interfaces = 0;
3170         for (i = 0; i < n_limits; i++)
3171                 data->if_combination.max_interfaces +=
3172                         data->if_limits[i].max;
3173
3174         data->if_combination.n_limits = n_limits;
3175         data->if_combination.limits = data->if_limits;
3176
3177         /*
3178          * If we actually were asked to support combinations,
3179          * advertise them - if there's only a single thing like
3180          * only IBSS then don't advertise it as combinations.
3181          */
3182         if (data->if_combination.max_interfaces > 1) {
3183                 hw->wiphy->iface_combinations = &data->if_combination;
3184                 hw->wiphy->n_iface_combinations = 1;
3185         }
3186
3187         if (param->ciphers) {
3188                 memcpy(data->ciphers, param->ciphers,
3189                        param->n_ciphers * sizeof(u32));
3190                 hw->wiphy->cipher_suites = data->ciphers;
3191                 hw->wiphy->n_cipher_suites = param->n_ciphers;
3192         }
3193
3194         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
3195         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
3196         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
3197
3198         hw->queues = 5;
3199         hw->offchannel_tx_hw_queue = 4;
3200
3201         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
3202         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
3203         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
3204         ieee80211_hw_set(hw, QUEUE_CONTROL);
3205         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
3206         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
3207         ieee80211_hw_set(hw, MFP_CAPABLE);
3208         ieee80211_hw_set(hw, SIGNAL_DBM);
3209         ieee80211_hw_set(hw, SUPPORTS_PS);
3210         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
3211         ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
3212         ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
3213         ieee80211_hw_set(hw, TDLS_WIDER_BW);
3214         if (rctbl)
3215                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
3216         ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
3217
3218         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3219         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
3220                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3221                             WIPHY_FLAG_AP_UAPSD |
3222                             WIPHY_FLAG_SUPPORTS_5_10_MHZ |
3223                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
3224         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
3225                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
3226                                NL80211_FEATURE_STATIC_SMPS |
3227                                NL80211_FEATURE_DYNAMIC_SMPS |
3228                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
3229         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
3230         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
3231         wiphy_ext_feature_set(hw->wiphy,
3232                               NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
3233         wiphy_ext_feature_set(hw->wiphy,
3234                               NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
3235
3236         hw->wiphy->interface_modes = param->iftypes;
3237
3238         /* ask mac80211 to reserve space for magic */
3239         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
3240         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
3241         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
3242
3243         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
3244                 sizeof(hwsim_channels_2ghz));
3245         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
3246                 sizeof(hwsim_channels_5ghz));
3247         memcpy(data->channels_6ghz, hwsim_channels_6ghz,
3248                 sizeof(hwsim_channels_6ghz));
3249         memcpy(data->channels_s1g, hwsim_channels_s1g,
3250                sizeof(hwsim_channels_s1g));
3251         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
3252
3253         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3254                 struct ieee80211_supported_band *sband = &data->bands[band];
3255
3256                 sband->band = band;
3257
3258                 switch (band) {
3259                 case NL80211_BAND_2GHZ:
3260                         sband->channels = data->channels_2ghz;
3261                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
3262                         sband->bitrates = data->rates;
3263                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
3264                         break;
3265                 case NL80211_BAND_5GHZ:
3266                         sband->channels = data->channels_5ghz;
3267                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
3268                         sband->bitrates = data->rates + 4;
3269                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3270
3271                         sband->vht_cap.vht_supported = true;
3272                         sband->vht_cap.cap =
3273                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
3274                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
3275                                 IEEE80211_VHT_CAP_RXLDPC |
3276                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
3277                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
3278                                 IEEE80211_VHT_CAP_TXSTBC |
3279                                 IEEE80211_VHT_CAP_RXSTBC_4 |
3280                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
3281                         sband->vht_cap.vht_mcs.rx_mcs_map =
3282                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
3283                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
3284                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
3285                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
3286                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
3287                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
3288                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
3289                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
3290                         sband->vht_cap.vht_mcs.tx_mcs_map =
3291                                 sband->vht_cap.vht_mcs.rx_mcs_map;
3292                         break;
3293                 case NL80211_BAND_S1GHZ:
3294                         memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
3295                                sizeof(sband->s1g_cap));
3296                         sband->channels = data->channels_s1g;
3297                         sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
3298                         break;
3299                 default:
3300                         continue;
3301                 }
3302
3303                 sband->ht_cap.ht_supported = true;
3304                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
3305                                     IEEE80211_HT_CAP_GRN_FLD |
3306                                     IEEE80211_HT_CAP_SGI_20 |
3307                                     IEEE80211_HT_CAP_SGI_40 |
3308                                     IEEE80211_HT_CAP_DSSSCCK40;
3309                 sband->ht_cap.ampdu_factor = 0x3;
3310                 sband->ht_cap.ampdu_density = 0x6;
3311                 memset(&sband->ht_cap.mcs, 0,
3312                        sizeof(sband->ht_cap.mcs));
3313                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
3314                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
3315                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3316
3317                 mac80211_hwsim_he_capab(sband);
3318
3319                 hw->wiphy->bands[band] = sband;
3320         }
3321
3322         /* By default all radios belong to the first group */
3323         data->group = 1;
3324         mutex_init(&data->mutex);
3325
3326         data->netgroup = hwsim_net_get_netgroup(net);
3327         data->wmediumd = hwsim_net_get_wmediumd(net);
3328
3329         /* Enable frame retransmissions for lossy channels */
3330         hw->max_rates = 4;
3331         hw->max_rate_tries = 11;
3332
3333         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3334         hw->wiphy->n_vendor_commands =
3335                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3336         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3337         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3338
3339         if (param->reg_strict)
3340                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3341         if (param->regd) {
3342                 data->regd = param->regd;
3343                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3344                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3345                 /* give the regulatory workqueue a chance to run */
3346                 schedule_timeout_interruptible(1);
3347         }
3348
3349         if (param->no_vif)
3350                 ieee80211_hw_set(hw, NO_AUTO_VIF);
3351
3352         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3353
3354         hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3355                      HRTIMER_MODE_ABS_SOFT);
3356         data->beacon_timer.function = mac80211_hwsim_beacon;
3357
3358         err = ieee80211_register_hw(hw);
3359         if (err < 0) {
3360                 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3361                        err);
3362                 goto failed_hw;
3363         }
3364
3365         wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3366
3367         if (param->reg_alpha2) {
3368                 data->alpha2[0] = param->reg_alpha2[0];
3369                 data->alpha2[1] = param->reg_alpha2[1];
3370                 regulatory_hint(hw->wiphy, param->reg_alpha2);
3371         }
3372
3373         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3374         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3375         debugfs_create_file("group", 0666, data->debugfs, data,
3376                             &hwsim_fops_group);
3377         if (!data->use_chanctx)
3378                 debugfs_create_file("dfs_simulate_radar", 0222,
3379                                     data->debugfs,
3380                                     data, &hwsim_simulate_radar);
3381
3382         spin_lock_bh(&hwsim_radio_lock);
3383         err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3384                                      hwsim_rht_params);
3385         if (err < 0) {
3386                 if (info) {
3387                         GENL_SET_ERR_MSG(info, "perm addr already present");
3388                         NL_SET_BAD_ATTR(info->extack,
3389                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
3390                 }
3391                 spin_unlock_bh(&hwsim_radio_lock);
3392                 goto failed_final_insert;
3393         }
3394
3395         list_add_tail(&data->list, &hwsim_radios);
3396         hwsim_radios_generation++;
3397         spin_unlock_bh(&hwsim_radio_lock);
3398
3399         hwsim_mcast_new_radio(idx, info, param);
3400
3401         return idx;
3402
3403 failed_final_insert:
3404         debugfs_remove_recursive(data->debugfs);
3405         ieee80211_unregister_hw(data->hw);
3406 failed_hw:
3407         device_release_driver(data->dev);
3408 failed_bind:
3409         device_unregister(data->dev);
3410 failed_drvdata:
3411         ieee80211_free_hw(hw);
3412 failed:
3413         return err;
3414 }
3415
3416 static void hwsim_mcast_del_radio(int id, const char *hwname,
3417                                   struct genl_info *info)
3418 {
3419         struct sk_buff *skb;
3420         void *data;
3421         int ret;
3422
3423         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3424         if (!skb)
3425                 return;
3426
3427         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3428                            HWSIM_CMD_DEL_RADIO);
3429         if (!data)
3430                 goto error;
3431
3432         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3433         if (ret < 0)
3434                 goto error;
3435
3436         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3437                       hwname);
3438         if (ret < 0)
3439                 goto error;
3440
3441         genlmsg_end(skb, data);
3442
3443         hwsim_mcast_config_msg(skb, info);
3444
3445         return;
3446
3447 error:
3448         nlmsg_free(skb);
3449 }
3450
3451 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3452                                      const char *hwname,
3453                                      struct genl_info *info)
3454 {
3455         hwsim_mcast_del_radio(data->idx, hwname, info);
3456         debugfs_remove_recursive(data->debugfs);
3457         ieee80211_unregister_hw(data->hw);
3458         device_release_driver(data->dev);
3459         device_unregister(data->dev);
3460         ieee80211_free_hw(data->hw);
3461 }
3462
3463 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3464                                     struct mac80211_hwsim_data *data,
3465                                     u32 portid, u32 seq,
3466                                     struct netlink_callback *cb, int flags)
3467 {
3468         void *hdr;
3469         struct hwsim_new_radio_params param = { };
3470         int res = -EMSGSIZE;
3471
3472         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3473                           HWSIM_CMD_GET_RADIO);
3474         if (!hdr)
3475                 return -EMSGSIZE;
3476
3477         if (cb)
3478                 genl_dump_check_consistent(cb, hdr);
3479
3480         if (data->alpha2[0] && data->alpha2[1])
3481                 param.reg_alpha2 = data->alpha2;
3482
3483         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3484                                         REGULATORY_STRICT_REG);
3485         param.p2p_device = !!(data->hw->wiphy->interface_modes &
3486                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
3487         param.use_chanctx = data->use_chanctx;
3488         param.regd = data->regd;
3489         param.channels = data->channels;
3490         param.hwname = wiphy_name(data->hw->wiphy);
3491
3492         res = append_radio_msg(skb, data->idx, &param);
3493         if (res < 0)
3494                 goto out_err;
3495
3496         genlmsg_end(skb, hdr);
3497         return 0;
3498
3499 out_err:
3500         genlmsg_cancel(skb, hdr);
3501         return res;
3502 }
3503
3504 static void mac80211_hwsim_free(void)
3505 {
3506         struct mac80211_hwsim_data *data;
3507
3508         spin_lock_bh(&hwsim_radio_lock);
3509         while ((data = list_first_entry_or_null(&hwsim_radios,
3510                                                 struct mac80211_hwsim_data,
3511                                                 list))) {
3512                 list_del(&data->list);
3513                 spin_unlock_bh(&hwsim_radio_lock);
3514                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3515                                          NULL);
3516                 spin_lock_bh(&hwsim_radio_lock);
3517         }
3518         spin_unlock_bh(&hwsim_radio_lock);
3519         class_destroy(hwsim_class);
3520 }
3521
3522 static const struct net_device_ops hwsim_netdev_ops = {
3523         .ndo_start_xmit         = hwsim_mon_xmit,
3524         .ndo_set_mac_address    = eth_mac_addr,
3525         .ndo_validate_addr      = eth_validate_addr,
3526 };
3527
3528 static void hwsim_mon_setup(struct net_device *dev)
3529 {
3530         dev->netdev_ops = &hwsim_netdev_ops;
3531         dev->needs_free_netdev = true;
3532         ether_setup(dev);
3533         dev->priv_flags |= IFF_NO_QUEUE;
3534         dev->type = ARPHRD_IEEE80211_RADIOTAP;
3535         eth_zero_addr(dev->dev_addr);
3536         dev->dev_addr[0] = 0x12;
3537 }
3538
3539 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3540 {
3541         return rhashtable_lookup_fast(&hwsim_radios_rht,
3542                                       addr,
3543                                       hwsim_rht_params);
3544 }
3545
3546 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3547 {
3548         struct mac80211_hwsim_data *data;
3549
3550         hwsim_net_set_wmediumd(net, portid);
3551
3552         spin_lock_bh(&hwsim_radio_lock);
3553         list_for_each_entry(data, &hwsim_radios, list) {
3554                 if (data->netgroup == hwsim_net_get_netgroup(net))
3555                         data->wmediumd = portid;
3556         }
3557         spin_unlock_bh(&hwsim_radio_lock);
3558 }
3559
3560 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3561                                            struct genl_info *info)
3562 {
3563
3564         struct ieee80211_hdr *hdr;
3565         struct mac80211_hwsim_data *data2;
3566         struct ieee80211_tx_info *txi;
3567         struct hwsim_tx_rate *tx_attempts;
3568         u64 ret_skb_cookie;
3569         struct sk_buff *skb, *tmp;
3570         const u8 *src;
3571         unsigned int hwsim_flags;
3572         int i;
3573         bool found = false;
3574
3575         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3576             !info->attrs[HWSIM_ATTR_FLAGS] ||
3577             !info->attrs[HWSIM_ATTR_COOKIE] ||
3578             !info->attrs[HWSIM_ATTR_SIGNAL] ||
3579             !info->attrs[HWSIM_ATTR_TX_INFO])
3580                 goto out;
3581
3582         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3583         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3584         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3585
3586         data2 = get_hwsim_data_ref_from_addr(src);
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         /* look for the skb matching the cookie passed back from user */
3600         skb_queue_walk_safe(&data2->pending, skb, tmp) {
3601                 u64 skb_cookie;
3602
3603                 txi = IEEE80211_SKB_CB(skb);
3604                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3605
3606                 if (skb_cookie == ret_skb_cookie) {
3607                         skb_unlink(skb, &data2->pending);
3608                         found = true;
3609                         break;
3610                 }
3611         }
3612
3613         /* not found */
3614         if (!found)
3615                 goto out;
3616
3617         /* Tx info received because the frame was broadcasted on user space,
3618          so we get all the necessary info: tx attempts and skb control buff */
3619
3620         tx_attempts = (struct hwsim_tx_rate *)nla_data(
3621                        info->attrs[HWSIM_ATTR_TX_INFO]);
3622
3623         /* now send back TX status */
3624         txi = IEEE80211_SKB_CB(skb);
3625
3626         ieee80211_tx_info_clear_status(txi);
3627
3628         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3629                 txi->status.rates[i].idx = tx_attempts[i].idx;
3630                 txi->status.rates[i].count = tx_attempts[i].count;
3631         }
3632
3633         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3634
3635         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3636            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3637                 if (skb->len >= 16) {
3638                         hdr = (struct ieee80211_hdr *) skb->data;
3639                         mac80211_hwsim_monitor_ack(data2->channel,
3640                                                    hdr->addr2);
3641                 }
3642                 txi->flags |= IEEE80211_TX_STAT_ACK;
3643         }
3644         ieee80211_tx_status_irqsafe(data2->hw, skb);
3645         return 0;
3646 out:
3647         return -EINVAL;
3648
3649 }
3650
3651 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3652                                           struct genl_info *info)
3653 {
3654         struct mac80211_hwsim_data *data2;
3655         struct ieee80211_rx_status rx_status;
3656         struct ieee80211_hdr *hdr;
3657         const u8 *dst;
3658         int frame_data_len;
3659         void *frame_data;
3660         struct sk_buff *skb = NULL;
3661         struct ieee80211_channel *channel = NULL;
3662
3663         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3664             !info->attrs[HWSIM_ATTR_FRAME] ||
3665             !info->attrs[HWSIM_ATTR_RX_RATE] ||
3666             !info->attrs[HWSIM_ATTR_SIGNAL])
3667                 goto out;
3668
3669         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3670         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3671         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3672
3673         /* Allocate new skb here */
3674         skb = alloc_skb(frame_data_len, GFP_KERNEL);
3675         if (skb == NULL)
3676                 goto err;
3677
3678         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3679                 goto err;
3680
3681         /* Copy the data */
3682         skb_put_data(skb, frame_data, frame_data_len);
3683
3684         data2 = get_hwsim_data_ref_from_addr(dst);
3685         if (!data2)
3686                 goto out;
3687
3688         if (data2->use_chanctx) {
3689                 if (data2->tmp_chan)
3690                         channel = data2->tmp_chan;
3691                 else if (data2->chanctx)
3692                         channel = data2->chanctx->def.chan;
3693         } else {
3694                 channel = data2->channel;
3695         }
3696         if (!channel)
3697                 goto out;
3698
3699         if (!hwsim_virtio_enabled) {
3700                 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3701                     data2->netgroup)
3702                         goto out;
3703
3704                 if (info->snd_portid != data2->wmediumd)
3705                         goto out;
3706         }
3707
3708         /* check if radio is configured properly */
3709
3710         if ((data2->idle && !data2->tmp_chan) || !data2->started)
3711                 goto out;
3712
3713         /* A frame is received from user space */
3714         memset(&rx_status, 0, sizeof(rx_status));
3715         if (info->attrs[HWSIM_ATTR_FREQ]) {
3716                 /* throw away off-channel packets, but allow both the temporary
3717                  * ("hw" scan/remain-on-channel) and regular channel, since the
3718                  * internal datapath also allows this
3719                  */
3720                 mutex_lock(&data2->mutex);
3721                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3722
3723                 if (rx_status.freq != channel->center_freq) {
3724                         mutex_unlock(&data2->mutex);
3725                         goto out;
3726                 }
3727                 mutex_unlock(&data2->mutex);
3728         } else {
3729                 rx_status.freq = channel->center_freq;
3730         }
3731
3732         rx_status.band = channel->band;
3733         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3734         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3735
3736         hdr = (void *)skb->data;
3737
3738         if (ieee80211_is_beacon(hdr->frame_control) ||
3739             ieee80211_is_probe_resp(hdr->frame_control))
3740                 rx_status.boottime_ns = ktime_get_boottime_ns();
3741
3742         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3743         data2->rx_pkts++;
3744         data2->rx_bytes += skb->len;
3745         ieee80211_rx_irqsafe(data2->hw, skb);
3746
3747         return 0;
3748 err:
3749         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3750 out:
3751         dev_kfree_skb(skb);
3752         return -EINVAL;
3753 }
3754
3755 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3756                                       struct genl_info *info)
3757 {
3758         struct net *net = genl_info_net(info);
3759         struct mac80211_hwsim_data *data;
3760         int chans = 1;
3761
3762         spin_lock_bh(&hwsim_radio_lock);
3763         list_for_each_entry(data, &hwsim_radios, list)
3764                 chans = max(chans, data->channels);
3765         spin_unlock_bh(&hwsim_radio_lock);
3766
3767         /* In the future we should revise the userspace API and allow it
3768          * to set a flag that it does support multi-channel, then we can
3769          * let this pass conditionally on the flag.
3770          * For current userspace, prohibit it since it won't work right.
3771          */
3772         if (chans > 1)
3773                 return -EOPNOTSUPP;
3774
3775         if (hwsim_net_get_wmediumd(net))
3776                 return -EBUSY;
3777
3778         hwsim_register_wmediumd(net, info->snd_portid);
3779
3780         pr_debug("mac80211_hwsim: received a REGISTER, "
3781                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3782
3783         return 0;
3784 }
3785
3786 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3787 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3788 {
3789         int i;
3790
3791         for (i = 0; i < n_ciphers; i++) {
3792                 int j;
3793                 int found = 0;
3794
3795                 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3796                         if (ciphers[i] == hwsim_ciphers[j]) {
3797                                 found = 1;
3798                                 break;
3799                         }
3800                 }
3801
3802                 if (!found)
3803                         return false;
3804         }
3805
3806         return true;
3807 }
3808
3809 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3810 {
3811         struct hwsim_new_radio_params param = { 0 };
3812         const char *hwname = NULL;
3813         int ret;
3814
3815         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3816         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3817         param.channels = channels;
3818         param.destroy_on_close =
3819                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3820
3821         if (info->attrs[HWSIM_ATTR_CHANNELS])
3822                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3823
3824         if (param.channels < 1) {
3825                 GENL_SET_ERR_MSG(info, "must have at least one channel");
3826                 return -EINVAL;
3827         }
3828
3829         if (info->attrs[HWSIM_ATTR_NO_VIF])
3830                 param.no_vif = true;
3831
3832         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3833                 param.use_chanctx = true;
3834         else
3835                 param.use_chanctx = (param.channels > 1);
3836
3837         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3838                 param.reg_alpha2 =
3839                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3840
3841         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3842                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3843
3844                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3845                         return -EINVAL;
3846
3847                 idx = array_index_nospec(idx,
3848                                          ARRAY_SIZE(hwsim_world_regdom_custom));
3849                 param.regd = hwsim_world_regdom_custom[idx];
3850         }
3851
3852         if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3853                 if (!is_valid_ether_addr(
3854                                 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3855                         GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3856                         NL_SET_BAD_ATTR(info->extack,
3857                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
3858                         return -EINVAL;
3859                 }
3860
3861                 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3862         }
3863
3864         if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3865                 param.iftypes =
3866                         nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3867
3868                 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3869                         NL_SET_ERR_MSG_ATTR(info->extack,
3870                                             info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3871                                             "cannot support more iftypes than kernel");
3872                         return -EINVAL;
3873                 }
3874         } else {
3875                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3876         }
3877
3878         /* ensure both flag and iftype support is honored */
3879         if (param.p2p_device ||
3880             param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3881                 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3882                 param.p2p_device = true;
3883         }
3884
3885         if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3886                 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3887
3888                 param.ciphers =
3889                         nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3890
3891                 if (len % sizeof(u32)) {
3892                         NL_SET_ERR_MSG_ATTR(info->extack,
3893                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3894                                             "bad cipher list length");
3895                         return -EINVAL;
3896                 }
3897
3898                 param.n_ciphers = len / sizeof(u32);
3899
3900                 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3901                         NL_SET_ERR_MSG_ATTR(info->extack,
3902                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3903                                             "too many ciphers specified");
3904                         return -EINVAL;
3905                 }
3906
3907                 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3908                         NL_SET_ERR_MSG_ATTR(info->extack,
3909                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3910                                             "unsupported ciphers specified");
3911                         return -EINVAL;
3912                 }
3913         }
3914
3915         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3916                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3917                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3918                                   GFP_KERNEL);
3919                 if (!hwname)
3920                         return -ENOMEM;
3921                 param.hwname = hwname;
3922         }
3923
3924         ret = mac80211_hwsim_new_radio(info, &param);
3925         kfree(hwname);
3926         return ret;
3927 }
3928
3929 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3930 {
3931         struct mac80211_hwsim_data *data;
3932         s64 idx = -1;
3933         const char *hwname = NULL;
3934
3935         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3936                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3937         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3938                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3939                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3940                                   GFP_KERNEL);
3941                 if (!hwname)
3942                         return -ENOMEM;
3943         } else
3944                 return -EINVAL;
3945
3946         spin_lock_bh(&hwsim_radio_lock);
3947         list_for_each_entry(data, &hwsim_radios, list) {
3948                 if (idx >= 0) {
3949                         if (data->idx != idx)
3950                                 continue;
3951                 } else {
3952                         if (!hwname ||
3953                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3954                                 continue;
3955                 }
3956
3957                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3958                         continue;
3959
3960                 list_del(&data->list);
3961                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3962                                        hwsim_rht_params);
3963                 hwsim_radios_generation++;
3964                 spin_unlock_bh(&hwsim_radio_lock);
3965                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3966                                          info);
3967                 kfree(hwname);
3968                 return 0;
3969         }
3970         spin_unlock_bh(&hwsim_radio_lock);
3971
3972         kfree(hwname);
3973         return -ENODEV;
3974 }
3975
3976 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3977 {
3978         struct mac80211_hwsim_data *data;
3979         struct sk_buff *skb;
3980         int idx, res = -ENODEV;
3981
3982         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3983                 return -EINVAL;
3984         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3985
3986         spin_lock_bh(&hwsim_radio_lock);
3987         list_for_each_entry(data, &hwsim_radios, list) {
3988                 if (data->idx != idx)
3989                         continue;
3990
3991                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3992                         continue;
3993
3994                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3995                 if (!skb) {
3996                         res = -ENOMEM;
3997                         goto out_err;
3998                 }
3999
4000                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
4001                                                info->snd_seq, NULL, 0);
4002                 if (res < 0) {
4003                         nlmsg_free(skb);
4004                         goto out_err;
4005                 }
4006
4007                 res = genlmsg_reply(skb, info);
4008                 break;
4009         }
4010
4011 out_err:
4012         spin_unlock_bh(&hwsim_radio_lock);
4013
4014         return res;
4015 }
4016
4017 static int hwsim_dump_radio_nl(struct sk_buff *skb,
4018                                struct netlink_callback *cb)
4019 {
4020         int last_idx = cb->args[0] - 1;
4021         struct mac80211_hwsim_data *data = NULL;
4022         int res = 0;
4023         void *hdr;
4024
4025         spin_lock_bh(&hwsim_radio_lock);
4026         cb->seq = hwsim_radios_generation;
4027
4028         if (last_idx >= hwsim_radio_idx-1)
4029                 goto done;
4030
4031         list_for_each_entry(data, &hwsim_radios, list) {
4032                 if (data->idx <= last_idx)
4033                         continue;
4034
4035                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
4036                         continue;
4037
4038                 res = mac80211_hwsim_get_radio(skb, data,
4039                                                NETLINK_CB(cb->skb).portid,
4040                                                cb->nlh->nlmsg_seq, cb,
4041                                                NLM_F_MULTI);
4042                 if (res < 0)
4043                         break;
4044
4045                 last_idx = data->idx;
4046         }
4047
4048         cb->args[0] = last_idx + 1;
4049
4050         /* list changed, but no new element sent, set interrupted flag */
4051         if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
4052                 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
4053                                   cb->nlh->nlmsg_seq, &hwsim_genl_family,
4054                                   NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
4055                 if (hdr) {
4056                         genl_dump_check_consistent(cb, hdr);
4057                         genlmsg_end(skb, hdr);
4058                 } else {
4059                         res = -EMSGSIZE;
4060                 }
4061         }
4062
4063 done:
4064         spin_unlock_bh(&hwsim_radio_lock);
4065         return res ?: skb->len;
4066 }
4067
4068 /* Generic Netlink operations array */
4069 static const struct genl_small_ops hwsim_ops[] = {
4070         {
4071                 .cmd = HWSIM_CMD_REGISTER,
4072                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4073                 .doit = hwsim_register_received_nl,
4074                 .flags = GENL_UNS_ADMIN_PERM,
4075         },
4076         {
4077                 .cmd = HWSIM_CMD_FRAME,
4078                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4079                 .doit = hwsim_cloned_frame_received_nl,
4080         },
4081         {
4082                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
4083                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4084                 .doit = hwsim_tx_info_frame_received_nl,
4085         },
4086         {
4087                 .cmd = HWSIM_CMD_NEW_RADIO,
4088                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4089                 .doit = hwsim_new_radio_nl,
4090                 .flags = GENL_UNS_ADMIN_PERM,
4091         },
4092         {
4093                 .cmd = HWSIM_CMD_DEL_RADIO,
4094                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4095                 .doit = hwsim_del_radio_nl,
4096                 .flags = GENL_UNS_ADMIN_PERM,
4097         },
4098         {
4099                 .cmd = HWSIM_CMD_GET_RADIO,
4100                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4101                 .doit = hwsim_get_radio_nl,
4102                 .dumpit = hwsim_dump_radio_nl,
4103         },
4104 };
4105
4106 static struct genl_family hwsim_genl_family __ro_after_init = {
4107         .name = "MAC80211_HWSIM",
4108         .version = 1,
4109         .maxattr = HWSIM_ATTR_MAX,
4110         .policy = hwsim_genl_policy,
4111         .netnsok = true,
4112         .module = THIS_MODULE,
4113         .small_ops = hwsim_ops,
4114         .n_small_ops = ARRAY_SIZE(hwsim_ops),
4115         .mcgrps = hwsim_mcgrps,
4116         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
4117 };
4118
4119 static void remove_user_radios(u32 portid)
4120 {
4121         struct mac80211_hwsim_data *entry, *tmp;
4122         LIST_HEAD(list);
4123
4124         spin_lock_bh(&hwsim_radio_lock);
4125         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
4126                 if (entry->destroy_on_close && entry->portid == portid) {
4127                         list_move(&entry->list, &list);
4128                         rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
4129                                                hwsim_rht_params);
4130                         hwsim_radios_generation++;
4131                 }
4132         }
4133         spin_unlock_bh(&hwsim_radio_lock);
4134
4135         list_for_each_entry_safe(entry, tmp, &list, list) {
4136                 list_del(&entry->list);
4137                 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
4138                                          NULL);
4139         }
4140 }
4141
4142 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
4143                                          unsigned long state,
4144                                          void *_notify)
4145 {
4146         struct netlink_notify *notify = _notify;
4147
4148         if (state != NETLINK_URELEASE)
4149                 return NOTIFY_DONE;
4150
4151         remove_user_radios(notify->portid);
4152
4153         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
4154                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
4155                        " socket, switching to perfect channel medium\n");
4156                 hwsim_register_wmediumd(notify->net, 0);
4157         }
4158         return NOTIFY_DONE;
4159
4160 }
4161
4162 static struct notifier_block hwsim_netlink_notifier = {
4163         .notifier_call = mac80211_hwsim_netlink_notify,
4164 };
4165
4166 static int __init hwsim_init_netlink(void)
4167 {
4168         int rc;
4169
4170         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
4171
4172         rc = genl_register_family(&hwsim_genl_family);
4173         if (rc)
4174                 goto failure;
4175
4176         rc = netlink_register_notifier(&hwsim_netlink_notifier);
4177         if (rc) {
4178                 genl_unregister_family(&hwsim_genl_family);
4179                 goto failure;
4180         }
4181
4182         return 0;
4183
4184 failure:
4185         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4186         return -EINVAL;
4187 }
4188
4189 static __net_init int hwsim_init_net(struct net *net)
4190 {
4191         return hwsim_net_set_netgroup(net);
4192 }
4193
4194 static void __net_exit hwsim_exit_net(struct net *net)
4195 {
4196         struct mac80211_hwsim_data *data, *tmp;
4197         LIST_HEAD(list);
4198
4199         spin_lock_bh(&hwsim_radio_lock);
4200         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
4201                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
4202                         continue;
4203
4204                 /* Radios created in init_net are returned to init_net. */
4205                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
4206                         continue;
4207
4208                 list_move(&data->list, &list);
4209                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4210                                        hwsim_rht_params);
4211                 hwsim_radios_generation++;
4212         }
4213         spin_unlock_bh(&hwsim_radio_lock);
4214
4215         list_for_each_entry_safe(data, tmp, &list, list) {
4216                 list_del(&data->list);
4217                 mac80211_hwsim_del_radio(data,
4218                                          wiphy_name(data->hw->wiphy),
4219                                          NULL);
4220         }
4221
4222         ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
4223 }
4224
4225 static struct pernet_operations hwsim_net_ops = {
4226         .init = hwsim_init_net,
4227         .exit = hwsim_exit_net,
4228         .id   = &hwsim_net_id,
4229         .size = sizeof(struct hwsim_net),
4230 };
4231
4232 static void hwsim_exit_netlink(void)
4233 {
4234         /* unregister the notifier */
4235         netlink_unregister_notifier(&hwsim_netlink_notifier);
4236         /* unregister the family */
4237         genl_unregister_family(&hwsim_genl_family);
4238 }
4239
4240 #if IS_REACHABLE(CONFIG_VIRTIO)
4241 static void hwsim_virtio_tx_done(struct virtqueue *vq)
4242 {
4243         unsigned int len;
4244         struct sk_buff *skb;
4245         unsigned long flags;
4246
4247         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4248         while ((skb = virtqueue_get_buf(vq, &len)))
4249                 nlmsg_free(skb);
4250         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4251 }
4252
4253 static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
4254 {
4255         struct nlmsghdr *nlh;
4256         struct genlmsghdr *gnlh;
4257         struct nlattr *tb[HWSIM_ATTR_MAX + 1];
4258         struct genl_info info = {};
4259         int err;
4260
4261         nlh = nlmsg_hdr(skb);
4262         gnlh = nlmsg_data(nlh);
4263         err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
4264                             hwsim_genl_policy, NULL);
4265         if (err) {
4266                 pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
4267                 return err;
4268         }
4269
4270         info.attrs = tb;
4271
4272         switch (gnlh->cmd) {
4273         case HWSIM_CMD_FRAME:
4274                 hwsim_cloned_frame_received_nl(skb, &info);
4275                 break;
4276         case HWSIM_CMD_TX_INFO_FRAME:
4277                 hwsim_tx_info_frame_received_nl(skb, &info);
4278                 break;
4279         default:
4280                 pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
4281                 return -EPROTO;
4282         }
4283         return 0;
4284 }
4285
4286 static void hwsim_virtio_rx_work(struct work_struct *work)
4287 {
4288         struct virtqueue *vq;
4289         unsigned int len;
4290         struct sk_buff *skb;
4291         struct scatterlist sg[1];
4292         int err;
4293         unsigned long flags;
4294
4295         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4296         if (!hwsim_virtio_enabled)
4297                 goto out_unlock;
4298
4299         skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
4300         if (!skb)
4301                 goto out_unlock;
4302         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4303
4304         skb->data = skb->head;
4305         skb_set_tail_pointer(skb, len);
4306         hwsim_virtio_handle_cmd(skb);
4307
4308         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4309         if (!hwsim_virtio_enabled) {
4310                 nlmsg_free(skb);
4311                 goto out_unlock;
4312         }
4313         vq = hwsim_vqs[HWSIM_VQ_RX];
4314         sg_init_one(sg, skb->head, skb_end_offset(skb));
4315         err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
4316         if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
4317                 nlmsg_free(skb);
4318         else
4319                 virtqueue_kick(vq);
4320         schedule_work(&hwsim_virtio_rx);
4321
4322 out_unlock:
4323         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4324 }
4325
4326 static void hwsim_virtio_rx_done(struct virtqueue *vq)
4327 {
4328         schedule_work(&hwsim_virtio_rx);
4329 }
4330
4331 static int init_vqs(struct virtio_device *vdev)
4332 {
4333         vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
4334                 [HWSIM_VQ_TX] = hwsim_virtio_tx_done,
4335                 [HWSIM_VQ_RX] = hwsim_virtio_rx_done,
4336         };
4337         const char *names[HWSIM_NUM_VQS] = {
4338                 [HWSIM_VQ_TX] = "tx",
4339                 [HWSIM_VQ_RX] = "rx",
4340         };
4341
4342         return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
4343                                hwsim_vqs, callbacks, names, NULL);
4344 }
4345
4346 static int fill_vq(struct virtqueue *vq)
4347 {
4348         int i, err;
4349         struct sk_buff *skb;
4350         struct scatterlist sg[1];
4351
4352         for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
4353                 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4354                 if (!skb)
4355                         return -ENOMEM;
4356
4357                 sg_init_one(sg, skb->head, skb_end_offset(skb));
4358                 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4359                 if (err) {
4360                         nlmsg_free(skb);
4361                         return err;
4362                 }
4363         }
4364         virtqueue_kick(vq);
4365         return 0;
4366 }
4367
4368 static void remove_vqs(struct virtio_device *vdev)
4369 {
4370         int i;
4371
4372         vdev->config->reset(vdev);
4373
4374         for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
4375                 struct virtqueue *vq = hwsim_vqs[i];
4376                 struct sk_buff *skb;
4377
4378                 while ((skb = virtqueue_detach_unused_buf(vq)))
4379                         nlmsg_free(skb);
4380         }
4381
4382         vdev->config->del_vqs(vdev);
4383 }
4384
4385 static int hwsim_virtio_probe(struct virtio_device *vdev)
4386 {
4387         int err;
4388         unsigned long flags;
4389
4390         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4391         if (hwsim_virtio_enabled) {
4392                 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4393                 return -EEXIST;
4394         }
4395         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4396
4397         err = init_vqs(vdev);
4398         if (err)
4399                 return err;
4400
4401         err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
4402         if (err)
4403                 goto out_remove;
4404
4405         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4406         hwsim_virtio_enabled = true;
4407         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4408
4409         schedule_work(&hwsim_virtio_rx);
4410         return 0;
4411
4412 out_remove:
4413         remove_vqs(vdev);
4414         return err;
4415 }
4416
4417 static void hwsim_virtio_remove(struct virtio_device *vdev)
4418 {
4419         hwsim_virtio_enabled = false;
4420
4421         cancel_work_sync(&hwsim_virtio_rx);
4422
4423         remove_vqs(vdev);
4424 }
4425
4426 /* MAC80211_HWSIM virtio device id table */
4427 static const struct virtio_device_id id_table[] = {
4428         { VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
4429         { 0 }
4430 };
4431 MODULE_DEVICE_TABLE(virtio, id_table);
4432
4433 static struct virtio_driver virtio_hwsim = {
4434         .driver.name = KBUILD_MODNAME,
4435         .driver.owner = THIS_MODULE,
4436         .id_table = id_table,
4437         .probe = hwsim_virtio_probe,
4438         .remove = hwsim_virtio_remove,
4439 };
4440
4441 static int hwsim_register_virtio_driver(void)
4442 {
4443         return register_virtio_driver(&virtio_hwsim);
4444 }
4445
4446 static void hwsim_unregister_virtio_driver(void)
4447 {
4448         unregister_virtio_driver(&virtio_hwsim);
4449 }
4450 #else
4451 static inline int hwsim_register_virtio_driver(void)
4452 {
4453         return 0;
4454 }
4455
4456 static inline void hwsim_unregister_virtio_driver(void)
4457 {
4458 }
4459 #endif
4460
4461 static int __init init_mac80211_hwsim(void)
4462 {
4463         int i, err;
4464
4465         if (radios < 0 || radios > 100)
4466                 return -EINVAL;
4467
4468         if (channels < 1)
4469                 return -EINVAL;
4470
4471         err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
4472         if (err)
4473                 return err;
4474
4475         err = register_pernet_device(&hwsim_net_ops);
4476         if (err)
4477                 goto out_free_rht;
4478
4479         err = platform_driver_register(&mac80211_hwsim_driver);
4480         if (err)
4481                 goto out_unregister_pernet;
4482
4483         err = hwsim_init_netlink();
4484         if (err)
4485                 goto out_unregister_driver;
4486
4487         err = hwsim_register_virtio_driver();
4488         if (err)
4489                 goto out_exit_netlink;
4490
4491         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
4492         if (IS_ERR(hwsim_class)) {
4493                 err = PTR_ERR(hwsim_class);
4494                 goto out_exit_virtio;
4495         }
4496
4497         hwsim_init_s1g_channels(hwsim_channels_s1g);
4498
4499         for (i = 0; i < radios; i++) {
4500                 struct hwsim_new_radio_params param = { 0 };
4501
4502                 param.channels = channels;
4503
4504                 switch (regtest) {
4505                 case HWSIM_REGTEST_DIFF_COUNTRY:
4506                         if (i < ARRAY_SIZE(hwsim_alpha2s))
4507                                 param.reg_alpha2 = hwsim_alpha2s[i];
4508                         break;
4509                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
4510                         if (!i)
4511                                 param.reg_alpha2 = hwsim_alpha2s[0];
4512                         break;
4513                 case HWSIM_REGTEST_STRICT_ALL:
4514                         param.reg_strict = true;
4515                         fallthrough;
4516                 case HWSIM_REGTEST_DRIVER_REG_ALL:
4517                         param.reg_alpha2 = hwsim_alpha2s[0];
4518                         break;
4519                 case HWSIM_REGTEST_WORLD_ROAM:
4520                         if (i == 0)
4521                                 param.regd = &hwsim_world_regdom_custom_01;
4522                         break;
4523                 case HWSIM_REGTEST_CUSTOM_WORLD:
4524                         param.regd = &hwsim_world_regdom_custom_01;
4525                         break;
4526                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
4527                         if (i == 0)
4528                                 param.regd = &hwsim_world_regdom_custom_01;
4529                         else if (i == 1)
4530                                 param.regd = &hwsim_world_regdom_custom_02;
4531                         break;
4532                 case HWSIM_REGTEST_STRICT_FOLLOW:
4533                         if (i == 0) {
4534                                 param.reg_strict = true;
4535                                 param.reg_alpha2 = hwsim_alpha2s[0];
4536                         }
4537                         break;
4538                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
4539                         if (i == 0) {
4540                                 param.reg_strict = true;
4541                                 param.reg_alpha2 = hwsim_alpha2s[0];
4542                         } else if (i == 1) {
4543                                 param.reg_alpha2 = hwsim_alpha2s[1];
4544                         }
4545                         break;
4546                 case HWSIM_REGTEST_ALL:
4547                         switch (i) {
4548                         case 0:
4549                                 param.regd = &hwsim_world_regdom_custom_01;
4550                                 break;
4551                         case 1:
4552                                 param.regd = &hwsim_world_regdom_custom_02;
4553                                 break;
4554                         case 2:
4555                                 param.reg_alpha2 = hwsim_alpha2s[0];
4556                                 break;
4557                         case 3:
4558                                 param.reg_alpha2 = hwsim_alpha2s[1];
4559                                 break;
4560                         case 4:
4561                                 param.reg_strict = true;
4562                                 param.reg_alpha2 = hwsim_alpha2s[2];
4563                                 break;
4564                         }
4565                         break;
4566                 default:
4567                         break;
4568                 }
4569
4570                 param.p2p_device = support_p2p_device;
4571                 param.use_chanctx = channels > 1;
4572                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4573                 if (param.p2p_device)
4574                         param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4575
4576                 err = mac80211_hwsim_new_radio(NULL, &param);
4577                 if (err < 0)
4578                         goto out_free_radios;
4579         }
4580
4581         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4582                                  hwsim_mon_setup);
4583         if (hwsim_mon == NULL) {
4584                 err = -ENOMEM;
4585                 goto out_free_radios;
4586         }
4587
4588         rtnl_lock();
4589         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4590         if (err < 0) {
4591                 rtnl_unlock();
4592                 goto out_free_mon;
4593         }
4594
4595         err = register_netdevice(hwsim_mon);
4596         if (err < 0) {
4597                 rtnl_unlock();
4598                 goto out_free_mon;
4599         }
4600         rtnl_unlock();
4601
4602         return 0;
4603
4604 out_free_mon:
4605         free_netdev(hwsim_mon);
4606 out_free_radios:
4607         mac80211_hwsim_free();
4608 out_exit_virtio:
4609         hwsim_unregister_virtio_driver();
4610 out_exit_netlink:
4611         hwsim_exit_netlink();
4612 out_unregister_driver:
4613         platform_driver_unregister(&mac80211_hwsim_driver);
4614 out_unregister_pernet:
4615         unregister_pernet_device(&hwsim_net_ops);
4616 out_free_rht:
4617         rhashtable_destroy(&hwsim_radios_rht);
4618         return err;
4619 }
4620 module_init(init_mac80211_hwsim);
4621
4622 static void __exit exit_mac80211_hwsim(void)
4623 {
4624         pr_debug("mac80211_hwsim: unregister radios\n");
4625
4626         hwsim_unregister_virtio_driver();
4627         hwsim_exit_netlink();
4628
4629         mac80211_hwsim_free();
4630
4631         rhashtable_destroy(&hwsim_radios_rht);
4632         unregister_netdev(hwsim_mon);
4633         platform_driver_unregister(&mac80211_hwsim_driver);
4634         unregister_pernet_device(&hwsim_net_ops);
4635 }
4636 module_exit(exit_mac80211_hwsim);