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 - 2022 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_03 = {
 177         .n_reg_rules = 6,
 178         .alpha2 =  "99",
 179         .reg_rules = {
 180                 REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0),
 181                 REG_RULE(2484 - 10, 2484 + 10, 40, 0, 20, 0),
 182                 REG_RULE(5150 - 10, 5240 + 10, 40, 0, 30, 0),
 183                 REG_RULE(5745 - 10, 5825 + 10, 40, 0, 30, 0),
 184                 REG_RULE(5855 - 10, 5925 + 10, 40, 0, 33, 0),
 185                 REG_RULE(5955 - 10, 7125 + 10, 320, 0, 33, 0),
 186         }
 187 };
 188
 189 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 190         &hwsim_world_regdom_custom_01,
 191         &hwsim_world_regdom_custom_02,
 192         &hwsim_world_regdom_custom_03,
 193 };
 194
 195 struct hwsim_vif_priv {
 196         u32 magic;
 197         u8 bssid[ETH_ALEN];
 198         bool assoc;
 199         bool bcn_en;
 200         u16 aid;
 201 };
 202
 203 #define HWSIM_VIF_MAGIC 0x69537748
 204
 205 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 206 {
 207         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 208         WARN(vp->magic != HWSIM_VIF_MAGIC,
 209              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 210              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 211 }
 212
 213 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 214 {
 215         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 216         vp->magic = HWSIM_VIF_MAGIC;
 217 }
 218
 219 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 220 {
 221         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 222         vp->magic = 0;
 223 }
 224
 225 struct hwsim_sta_priv {
 226         u32 magic;
 227 };
 228
 229 #define HWSIM_STA_MAGIC 0x6d537749
 230
 231 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 232 {
 233         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 234         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 235 }
 236
 237 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 238 {
 239         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 240         sp->magic = HWSIM_STA_MAGIC;
 241 }
 242
 243 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 244 {
 245         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 246         sp->magic = 0;
 247 }
 248
 249 struct hwsim_chanctx_priv {
 250         u32 magic;
 251 };
 252
 253 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 254
 255 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 256 {
 257         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 258         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 259 }
 260
 261 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 262 {
 263         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 264         cp->magic = HWSIM_CHANCTX_MAGIC;
 265 }
 266
 267 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 268 {
 269         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 270         cp->magic = 0;
 271 }
 272
 273 static unsigned int hwsim_net_id;
 274
 275 static DEFINE_IDA(hwsim_netgroup_ida);
 276
 277 struct hwsim_net {
 278         int netgroup;
 279         u32 wmediumd;
 280 };
 281
 282 static inline int hwsim_net_get_netgroup(struct net *net)
 283 {
 284         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 285
 286         return hwsim_net->netgroup;
 287 }
 288
 289 static inline int hwsim_net_set_netgroup(struct net *net)
 290 {
 291         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 292
 293         hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
 294                                              0, 0, GFP_KERNEL);
 295         return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
 296 }
 297
 298 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 299 {
 300         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 301
 302         return hwsim_net->wmediumd;
 303 }
 304
 305 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 306 {
 307         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 308
 309         hwsim_net->wmediumd = portid;
 310 }
 311
 312 static struct class *hwsim_class;
 313
 314 static struct net_device *hwsim_mon; /* global monitor netdev */
 315
 316 #define CHAN2G(_freq)  { \
 317         .band = NL80211_BAND_2GHZ, \
 318         .center_freq = (_freq), \
 319         .hw_value = (_freq), \
 320 }
 321
 322 #define CHAN5G(_freq) { \
 323         .band = NL80211_BAND_5GHZ, \
 324         .center_freq = (_freq), \
 325         .hw_value = (_freq), \
 326 }
 327
 328 #define CHAN6G(_freq) { \
 329         .band = NL80211_BAND_6GHZ, \
 330         .center_freq = (_freq), \
 331         .hw_value = (_freq), \
 332 }
 333
 334 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 335         CHAN2G(2412), /* Channel 1 */
 336         CHAN2G(2417), /* Channel 2 */
 337         CHAN2G(2422), /* Channel 3 */
 338         CHAN2G(2427), /* Channel 4 */
 339         CHAN2G(2432), /* Channel 5 */
 340         CHAN2G(2437), /* Channel 6 */
 341         CHAN2G(2442), /* Channel 7 */
 342         CHAN2G(2447), /* Channel 8 */
 343         CHAN2G(2452), /* Channel 9 */
 344         CHAN2G(2457), /* Channel 10 */
 345         CHAN2G(2462), /* Channel 11 */
 346         CHAN2G(2467), /* Channel 12 */
 347         CHAN2G(2472), /* Channel 13 */
 348         CHAN2G(2484), /* Channel 14 */
 349 };
 350
 351 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 352         CHAN5G(5180), /* Channel 36 */
 353         CHAN5G(5200), /* Channel 40 */
 354         CHAN5G(5220), /* Channel 44 */
 355         CHAN5G(5240), /* Channel 48 */
 356
 357         CHAN5G(5260), /* Channel 52 */
 358         CHAN5G(5280), /* Channel 56 */
 359         CHAN5G(5300), /* Channel 60 */
 360         CHAN5G(5320), /* Channel 64 */
 361
 362         CHAN5G(5500), /* Channel 100 */
 363         CHAN5G(5520), /* Channel 104 */
 364         CHAN5G(5540), /* Channel 108 */
 365         CHAN5G(5560), /* Channel 112 */
 366         CHAN5G(5580), /* Channel 116 */
 367         CHAN5G(5600), /* Channel 120 */
 368         CHAN5G(5620), /* Channel 124 */
 369         CHAN5G(5640), /* Channel 128 */
 370         CHAN5G(5660), /* Channel 132 */
 371         CHAN5G(5680), /* Channel 136 */
 372         CHAN5G(5700), /* Channel 140 */
 373
 374         CHAN5G(5745), /* Channel 149 */
 375         CHAN5G(5765), /* Channel 153 */
 376         CHAN5G(5785), /* Channel 157 */
 377         CHAN5G(5805), /* Channel 161 */
 378         CHAN5G(5825), /* Channel 165 */
 379         CHAN5G(5845), /* Channel 169 */
 380
 381         CHAN5G(5855), /* Channel 171 */
 382         CHAN5G(5860), /* Channel 172 */
 383         CHAN5G(5865), /* Channel 173 */
 384         CHAN5G(5870), /* Channel 174 */
 385
 386         CHAN5G(5875), /* Channel 175 */
 387         CHAN5G(5880), /* Channel 176 */
 388         CHAN5G(5885), /* Channel 177 */
 389         CHAN5G(5890), /* Channel 178 */
 390         CHAN5G(5895), /* Channel 179 */
 391         CHAN5G(5900), /* Channel 180 */
 392         CHAN5G(5905), /* Channel 181 */
 393
 394         CHAN5G(5910), /* Channel 182 */
 395         CHAN5G(5915), /* Channel 183 */
 396         CHAN5G(5920), /* Channel 184 */
 397         CHAN5G(5925), /* Channel 185 */
 398 };
 399
 400 static const struct ieee80211_channel hwsim_channels_6ghz[] = {
 401         CHAN6G(5955), /* Channel 1 */
 402         CHAN6G(5975), /* Channel 5 */
 403         CHAN6G(5995), /* Channel 9 */
 404         CHAN6G(6015), /* Channel 13 */
 405         CHAN6G(6035), /* Channel 17 */
 406         CHAN6G(6055), /* Channel 21 */
 407         CHAN6G(6075), /* Channel 25 */
 408         CHAN6G(6095), /* Channel 29 */
 409         CHAN6G(6115), /* Channel 33 */
 410         CHAN6G(6135), /* Channel 37 */
 411         CHAN6G(6155), /* Channel 41 */
 412         CHAN6G(6175), /* Channel 45 */
 413         CHAN6G(6195), /* Channel 49 */
 414         CHAN6G(6215), /* Channel 53 */
 415         CHAN6G(6235), /* Channel 57 */
 416         CHAN6G(6255), /* Channel 61 */
 417         CHAN6G(6275), /* Channel 65 */
 418         CHAN6G(6295), /* Channel 69 */
 419         CHAN6G(6315), /* Channel 73 */
 420         CHAN6G(6335), /* Channel 77 */
 421         CHAN6G(6355), /* Channel 81 */
 422         CHAN6G(6375), /* Channel 85 */
 423         CHAN6G(6395), /* Channel 89 */
 424         CHAN6G(6415), /* Channel 93 */
 425         CHAN6G(6435), /* Channel 97 */
 426         CHAN6G(6455), /* Channel 181 */
 427         CHAN6G(6475), /* Channel 105 */
 428         CHAN6G(6495), /* Channel 109 */
 429         CHAN6G(6515), /* Channel 113 */
 430         CHAN6G(6535), /* Channel 117 */
 431         CHAN6G(6555), /* Channel 121 */
 432         CHAN6G(6575), /* Channel 125 */
 433         CHAN6G(6595), /* Channel 129 */
 434         CHAN6G(6615), /* Channel 133 */
 435         CHAN6G(6635), /* Channel 137 */
 436         CHAN6G(6655), /* Channel 141 */
 437         CHAN6G(6675), /* Channel 145 */
 438         CHAN6G(6695), /* Channel 149 */
 439         CHAN6G(6715), /* Channel 153 */
 440         CHAN6G(6735), /* Channel 157 */
 441         CHAN6G(6755), /* Channel 161 */
 442         CHAN6G(6775), /* Channel 165 */
 443         CHAN6G(6795), /* Channel 169 */
 444         CHAN6G(6815), /* Channel 173 */
 445         CHAN6G(6835), /* Channel 177 */
 446         CHAN6G(6855), /* Channel 181 */
 447         CHAN6G(6875), /* Channel 185 */
 448         CHAN6G(6895), /* Channel 189 */
 449         CHAN6G(6915), /* Channel 193 */
 450         CHAN6G(6935), /* Channel 197 */
 451         CHAN6G(6955), /* Channel 201 */
 452         CHAN6G(6975), /* Channel 205 */
 453         CHAN6G(6995), /* Channel 209 */
 454         CHAN6G(7015), /* Channel 213 */
 455         CHAN6G(7035), /* Channel 217 */
 456         CHAN6G(7055), /* Channel 221 */
 457         CHAN6G(7075), /* Channel 225 */
 458         CHAN6G(7095), /* Channel 229 */
 459         CHAN6G(7115), /* Channel 233 */
 460 };
 461
 462 #define NUM_S1G_CHANS_US 51
 463 static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
 464
 465 static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
 466         .s1g = true,
 467         .cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
 468                  0,
 469                  0,
 470                  S1G_CAP3_MAX_MPDU_LEN,
 471                  0,
 472                  S1G_CAP5_AMPDU,
 473                  0,
 474                  S1G_CAP7_DUP_1MHZ,
 475                  S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
 476                  0},
 477         .nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
 478         /* RX Highest Supported Long GI Data Rate 0:7 */
 479                      0,
 480         /* RX Highest Supported Long GI Data Rate 0:7 */
 481         /* TX S1G MCS Map 0:6 */
 482                      0xfa,
 483         /* TX S1G MCS Map :7 */
 484         /* TX Highest Supported Long GI Data Rate 0:6 */
 485                      0x80,
 486         /* TX Highest Supported Long GI Data Rate 7:8 */
 487         /* Rx Single spatial stream and S1G-MCS Map for 1MHz */
 488         /* Tx Single spatial stream and S1G-MCS Map for 1MHz */
 489                      0 },
 490 };
 491
 492 static void hwsim_init_s1g_channels(struct ieee80211_channel *chans)
 493 {
 494         int ch, freq;
 495
 496         for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
 497                 freq = 902000 + (ch + 1) * 500;
 498                 chans[ch].band = NL80211_BAND_S1GHZ;
 499                 chans[ch].center_freq = KHZ_TO_MHZ(freq);
 500                 chans[ch].freq_offset = freq % 1000;
 501                 chans[ch].hw_value = ch + 1;
 502         }
 503 }
 504
 505 static const struct ieee80211_rate hwsim_rates[] = {
 506         { .bitrate = 10 },
 507         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 508         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 509         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 510         { .bitrate = 60 },
 511         { .bitrate = 90 },
 512         { .bitrate = 120 },
 513         { .bitrate = 180 },
 514         { .bitrate = 240 },
 515         { .bitrate = 360 },
 516         { .bitrate = 480 },
 517         { .bitrate = 540 }
 518 };
 519
 520 #define DEFAULT_RX_RSSI -50
 521
 522 static const u32 hwsim_ciphers[] = {
 523         WLAN_CIPHER_SUITE_WEP40,
 524         WLAN_CIPHER_SUITE_WEP104,
 525         WLAN_CIPHER_SUITE_TKIP,
 526         WLAN_CIPHER_SUITE_CCMP,
 527         WLAN_CIPHER_SUITE_CCMP_256,
 528         WLAN_CIPHER_SUITE_GCMP,
 529         WLAN_CIPHER_SUITE_GCMP_256,
 530         WLAN_CIPHER_SUITE_AES_CMAC,
 531         WLAN_CIPHER_SUITE_BIP_CMAC_256,
 532         WLAN_CIPHER_SUITE_BIP_GMAC_128,
 533         WLAN_CIPHER_SUITE_BIP_GMAC_256,
 534 };
 535
 536 #define OUI_QCA 0x001374
 537 #define QCA_NL80211_SUBCMD_TEST 1
 538 enum qca_nl80211_vendor_subcmds {
 539         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 540         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 541 };
 542
 543 static const struct nla_policy
 544 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 545         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 546 };
 547
 548 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 549                                           struct wireless_dev *wdev,
 550                                           const void *data, int data_len)
 551 {
 552         struct sk_buff *skb;
 553         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 554         int err;
 555         u32 val;
 556
 557         err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
 558                                    data_len, hwsim_vendor_test_policy, NULL);
 559         if (err)
 560                 return err;
 561         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 562                 return -EINVAL;
 563         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 564         wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
 565
 566         /* Send a vendor event as a test. Note that this would not normally be
 567          * done within a command handler, but rather, based on some other
 568          * trigger. For simplicity, this command is used to trigger the event
 569          * here.
 570          *
 571          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 572          */
 573         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 574         if (skb) {
 575                 /* skb_put() or nla_put() will fill up data within
 576                  * NL80211_ATTR_VENDOR_DATA.
 577                  */
 578
 579                 /* Add vendor data */
 580                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 581
 582                 /* Send the event - this will call nla_nest_end() */
 583                 cfg80211_vendor_event(skb, GFP_KERNEL);
 584         }
 585
 586         /* Send a response to the command */
 587         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 588         if (!skb)
 589                 return -ENOMEM;
 590
 591         /* skb_put() or nla_put() will fill up data within
 592          * NL80211_ATTR_VENDOR_DATA
 593          */
 594         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 595
 596         return cfg80211_vendor_cmd_reply(skb);
 597 }
 598
 599 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 600         {
 601                 .info = { .vendor_id = OUI_QCA,
 602                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 603                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 604                 .doit = mac80211_hwsim_vendor_cmd_test,
 605                 .policy = hwsim_vendor_test_policy,
 606                 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
 607         }
 608 };
 609
 610 /* Advertise support vendor specific events */
 611 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 612         { .vendor_id = OUI_QCA, .subcmd = 1 },
 613 };
 614
 615 static DEFINE_SPINLOCK(hwsim_radio_lock);
 616 static LIST_HEAD(hwsim_radios);
 617 static struct rhashtable hwsim_radios_rht;
 618 static int hwsim_radio_idx;
 619 static int hwsim_radios_generation = 1;
 620
 621 static struct platform_driver mac80211_hwsim_driver = {
 622         .driver = {
 623                 .name = "mac80211_hwsim",
 624         },
 625 };
 626
 627 struct mac80211_hwsim_data {
 628         struct list_head list;
 629         struct rhash_head rht;
 630         struct ieee80211_hw *hw;
 631         struct device *dev;
 632         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 633         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 634         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 635         struct ieee80211_channel channels_6ghz[ARRAY_SIZE(hwsim_channels_6ghz)];
 636         struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
 637         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 638         struct ieee80211_iface_combination if_combination;
 639         struct ieee80211_iface_limit if_limits[3];
 640         int n_if_limits;
 641
 642         u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
 643
 644         struct mac_address addresses[2];
 645         struct ieee80211_chanctx_conf *chanctx;
 646         int channels, idx;
 647         bool use_chanctx;
 648         bool destroy_on_close;
 649         u32 portid;
 650         char alpha2[2];
 651         const struct ieee80211_regdomain *regd;
 652
 653         struct ieee80211_channel *tmp_chan;
 654         struct ieee80211_channel *roc_chan;
 655         u32 roc_duration;
 656         struct delayed_work roc_start;
 657         struct delayed_work roc_done;
 658         struct delayed_work hw_scan;
 659         struct cfg80211_scan_request *hw_scan_request;
 660         struct ieee80211_vif *hw_scan_vif;
 661         int scan_chan_idx;
 662         u8 scan_addr[ETH_ALEN];
 663         struct {
 664                 struct ieee80211_channel *channel;
 665                 unsigned long next_start, start, end;
 666         } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 667                       ARRAY_SIZE(hwsim_channels_5ghz) +
 668                       ARRAY_SIZE(hwsim_channels_6ghz)];
 669
 670         struct ieee80211_channel *channel;
 671         enum nl80211_chan_width bw;
 672         u64 beacon_int  /* beacon interval in us */;
 673         unsigned int rx_filter;
 674         bool started, idle, scanning;
 675         struct mutex mutex;
 676         struct hrtimer beacon_timer;
 677         enum ps_mode {
 678                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 679         } ps;
 680         bool ps_poll_pending;
 681         struct dentry *debugfs;
 682
 683         uintptr_t pending_cookie;
 684         struct sk_buff_head pending;    /* packets pending */
 685         /*
 686          * Only radios in the same group can communicate together (the
 687          * channel has to match too). Each bit represents a group. A
 688          * radio can be in more than one group.
 689          */
 690         u64 group;
 691
 692         /* group shared by radios created in the same netns */
 693         int netgroup;
 694         /* wmediumd portid responsible for netgroup of this radio */
 695         u32 wmediumd;
 696
 697         /* difference between this hw's clock and the real clock, in usecs */
 698         s64 tsf_offset;
 699         s64 bcn_delta;
 700         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 701         u64 abs_bcn_ts;
 702
 703         /* Stats */
 704         u64 tx_pkts;
 705         u64 rx_pkts;
 706         u64 tx_bytes;
 707         u64 rx_bytes;
 708         u64 tx_dropped;
 709         u64 tx_failed;
 710
 711         /* RSSI in rx status of the receiver */
 712         int rx_rssi;
 713 };
 714
 715 static const struct rhashtable_params hwsim_rht_params = {
 716         .nelem_hint = 2,
 717         .automatic_shrinking = true,
 718         .key_len = ETH_ALEN,
 719         .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
 720         .head_offset = offsetof(struct mac80211_hwsim_data, rht),
 721 };
 722
 723 struct hwsim_radiotap_hdr {
 724         struct ieee80211_radiotap_header hdr;
 725         __le64 rt_tsft;
 726         u8 rt_flags;
 727         u8 rt_rate;
 728         __le16 rt_channel;
 729         __le16 rt_chbitmask;
 730 } __packed;
 731
 732 struct hwsim_radiotap_ack_hdr {
 733         struct ieee80211_radiotap_header hdr;
 734         u8 rt_flags;
 735         u8 pad;
 736         __le16 rt_channel;
 737         __le16 rt_chbitmask;
 738 } __packed;
 739
 740 /* MAC80211_HWSIM netlink family */
 741 static struct genl_family hwsim_genl_family;
 742
 743 enum hwsim_multicast_groups {
 744         HWSIM_MCGRP_CONFIG,
 745 };
 746
 747 static const struct genl_multicast_group hwsim_mcgrps[] = {
 748         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 749 };
 750
 751 /* MAC80211_HWSIM netlink policy */
 752
 753 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 754         [HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
 755         [HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
 756         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 757                                .len = IEEE80211_MAX_DATA_LEN },
 758         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 759         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 760         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 761         [HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
 762                                  .len = IEEE80211_TX_MAX_RATES *
 763                                         sizeof(struct hwsim_tx_rate)},
 764         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 765         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 766         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 767         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 768         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 769         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 770         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 771         [HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
 772         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 773         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 774         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 775         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 776         [HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
 777         [HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
 778         [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
 779         [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
 780 };
 781
 782 #if IS_REACHABLE(CONFIG_VIRTIO)
 783
 784 /* MAC80211_HWSIM virtio queues */
 785 static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
 786 static bool hwsim_virtio_enabled;
 787 static DEFINE_SPINLOCK(hwsim_virtio_lock);
 788
 789 static void hwsim_virtio_rx_work(struct work_struct *work);
 790 static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
 791
 792 static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 793                            struct sk_buff *skb)
 794 {
 795         struct scatterlist sg[1];
 796         unsigned long flags;
 797         int err;
 798
 799         spin_lock_irqsave(&hwsim_virtio_lock, flags);
 800         if (!hwsim_virtio_enabled) {
 801                 err = -ENODEV;
 802                 goto out_free;
 803         }
 804
 805         sg_init_one(sg, skb->head, skb_end_offset(skb));
 806         err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
 807                                    GFP_ATOMIC);
 808         if (err)
 809                 goto out_free;
 810         virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
 811         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 812         return 0;
 813
 814 out_free:
 815         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 816         nlmsg_free(skb);
 817         return err;
 818 }
 819 #else
 820 /* cause a linker error if this ends up being needed */
 821 extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 822                            struct sk_buff *skb);
 823 #define hwsim_virtio_enabled false
 824 #endif
 825
 826 static int hwsim_get_chanwidth(enum nl80211_chan_width bw)
 827 {
 828         switch (bw) {
 829         case NL80211_CHAN_WIDTH_20_NOHT:
 830         case NL80211_CHAN_WIDTH_20:
 831                 return 20;
 832         case NL80211_CHAN_WIDTH_40:
 833                 return 40;
 834         case NL80211_CHAN_WIDTH_80:
 835                 return 80;
 836         case NL80211_CHAN_WIDTH_80P80:
 837         case NL80211_CHAN_WIDTH_160:
 838                 return 160;
 839         case NL80211_CHAN_WIDTH_320:
 840                 return 320;
 841         case NL80211_CHAN_WIDTH_5:
 842                 return 5;
 843         case NL80211_CHAN_WIDTH_10:
 844                 return 10;
 845         case NL80211_CHAN_WIDTH_1:
 846                 return 1;
 847         case NL80211_CHAN_WIDTH_2:
 848                 return 2;
 849         case NL80211_CHAN_WIDTH_4:
 850                 return 4;
 851         case NL80211_CHAN_WIDTH_8:
 852                 return 8;
 853         case NL80211_CHAN_WIDTH_16:
 854                 return 16;
 855         }
 856
 857         return INT_MAX;
 858 }
 859
 860 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 861                                     struct sk_buff *skb,
 862                                     struct ieee80211_channel *chan);
 863
 864 /* sysfs attributes */
 865 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 866 {
 867         struct mac80211_hwsim_data *data = dat;
 868         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 869         struct sk_buff *skb;
 870         struct ieee80211_pspoll *pspoll;
 871
 872         if (!vp->assoc)
 873                 return;
 874
 875         wiphy_dbg(data->hw->wiphy,
 876                   "%s: send PS-Poll to %pM for aid %d\n",
 877                   __func__, vp->bssid, vp->aid);
 878
 879         skb = dev_alloc_skb(sizeof(*pspoll));
 880         if (!skb)
 881                 return;
 882         pspoll = skb_put(skb, sizeof(*pspoll));
 883         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 884                                             IEEE80211_STYPE_PSPOLL |
 885                                             IEEE80211_FCTL_PM);
 886         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 887         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 888         memcpy(pspoll->ta, mac, ETH_ALEN);
 889
 890         rcu_read_lock();
 891         mac80211_hwsim_tx_frame(data->hw, skb,
 892                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 893         rcu_read_unlock();
 894 }
 895
 896 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 897                                 struct ieee80211_vif *vif, int ps)
 898 {
 899         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 900         struct sk_buff *skb;
 901         struct ieee80211_hdr *hdr;
 902
 903         if (!vp->assoc)
 904                 return;
 905
 906         wiphy_dbg(data->hw->wiphy,
 907                   "%s: send data::nullfunc to %pM ps=%d\n",
 908                   __func__, vp->bssid, ps);
 909
 910         skb = dev_alloc_skb(sizeof(*hdr));
 911         if (!skb)
 912                 return;
 913         hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 914         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 915                                          IEEE80211_STYPE_NULLFUNC |
 916                                          IEEE80211_FCTL_TODS |
 917                                          (ps ? IEEE80211_FCTL_PM : 0));
 918         hdr->duration_id = cpu_to_le16(0);
 919         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 920         memcpy(hdr->addr2, mac, ETH_ALEN);
 921         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 922
 923         rcu_read_lock();
 924         mac80211_hwsim_tx_frame(data->hw, skb,
 925                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 926         rcu_read_unlock();
 927 }
 928
 929
 930 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 931                                    struct ieee80211_vif *vif)
 932 {
 933         struct mac80211_hwsim_data *data = dat;
 934         hwsim_send_nullfunc(data, mac, vif, 1);
 935 }
 936
 937 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 938                                       struct ieee80211_vif *vif)
 939 {
 940         struct mac80211_hwsim_data *data = dat;
 941         hwsim_send_nullfunc(data, mac, vif, 0);
 942 }
 943
 944 static int hwsim_fops_ps_read(void *dat, u64 *val)
 945 {
 946         struct mac80211_hwsim_data *data = dat;
 947         *val = data->ps;
 948         return 0;
 949 }
 950
 951 static int hwsim_fops_ps_write(void *dat, u64 val)
 952 {
 953         struct mac80211_hwsim_data *data = dat;
 954         enum ps_mode old_ps;
 955
 956         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 957             val != PS_MANUAL_POLL)
 958                 return -EINVAL;
 959
 960         if (val == PS_MANUAL_POLL) {
 961                 if (data->ps != PS_ENABLED)
 962                         return -EINVAL;
 963                 local_bh_disable();
 964                 ieee80211_iterate_active_interfaces_atomic(
 965                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 966                         hwsim_send_ps_poll, data);
 967                 local_bh_enable();
 968                 return 0;
 969         }
 970         old_ps = data->ps;
 971         data->ps = val;
 972
 973         local_bh_disable();
 974         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 975                 ieee80211_iterate_active_interfaces_atomic(
 976                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 977                         hwsim_send_nullfunc_ps, data);
 978         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 979                 ieee80211_iterate_active_interfaces_atomic(
 980                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 981                         hwsim_send_nullfunc_no_ps, data);
 982         }
 983         local_bh_enable();
 984
 985         return 0;
 986 }
 987
 988 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 989                          "%llu\n");
 990
 991 static int hwsim_write_simulate_radar(void *dat, u64 val)
 992 {
 993         struct mac80211_hwsim_data *data = dat;
 994
 995         ieee80211_radar_detected(data->hw);
 996
 997         return 0;
 998 }
 999
1000 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
1001                          hwsim_write_simulate_radar, "%llu\n");
1002
1003 static int hwsim_fops_group_read(void *dat, u64 *val)
1004 {
1005         struct mac80211_hwsim_data *data = dat;
1006         *val = data->group;
1007         return 0;
1008 }
1009
1010 static int hwsim_fops_group_write(void *dat, u64 val)
1011 {
1012         struct mac80211_hwsim_data *data = dat;
1013         data->group = val;
1014         return 0;
1015 }
1016
1017 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
1018                          hwsim_fops_group_read, hwsim_fops_group_write,
1019                          "%llx\n");
1020
1021 static int hwsim_fops_rx_rssi_read(void *dat, u64 *val)
1022 {
1023         struct mac80211_hwsim_data *data = dat;
1024         *val = data->rx_rssi;
1025         return 0;
1026 }
1027
1028 static int hwsim_fops_rx_rssi_write(void *dat, u64 val)
1029 {
1030         struct mac80211_hwsim_data *data = dat;
1031         int rssi = (int)val;
1032
1033         if (rssi >= 0 || rssi < -100)
1034                 return -EINVAL;
1035
1036         data->rx_rssi = rssi;
1037         return 0;
1038 }
1039
1040 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_rx_rssi,
1041                          hwsim_fops_rx_rssi_read, hwsim_fops_rx_rssi_write,
1042                          "%lld\n");
1043
1044 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
1045                                         struct net_device *dev)
1046 {
1047         /* TODO: allow packet injection */
1048         dev_kfree_skb(skb);
1049         return NETDEV_TX_OK;
1050 }
1051
1052 static inline u64 mac80211_hwsim_get_tsf_raw(void)
1053 {
1054         return ktime_to_us(ktime_get_real());
1055 }
1056
1057 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
1058 {
1059         u64 now = mac80211_hwsim_get_tsf_raw();
1060         return cpu_to_le64(now + data->tsf_offset);
1061 }
1062
1063 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
1064                                   struct ieee80211_vif *vif)
1065 {
1066         struct mac80211_hwsim_data *data = hw->priv;
1067         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
1068 }
1069
1070 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
1071                 struct ieee80211_vif *vif, u64 tsf)
1072 {
1073         struct mac80211_hwsim_data *data = hw->priv;
1074         u64 now = mac80211_hwsim_get_tsf(hw, vif);
1075         u32 bcn_int = data->beacon_int;
1076         u64 delta = abs(tsf - now);
1077
1078         /* adjust after beaconing with new timestamp at old TBTT */
1079         if (tsf > now) {
1080                 data->tsf_offset += delta;
1081                 data->bcn_delta = do_div(delta, bcn_int);
1082         } else {
1083                 data->tsf_offset -= delta;
1084                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
1085         }
1086 }
1087
1088 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
1089                                       struct sk_buff *tx_skb,
1090                                       struct ieee80211_channel *chan)
1091 {
1092         struct mac80211_hwsim_data *data = hw->priv;
1093         struct sk_buff *skb;
1094         struct hwsim_radiotap_hdr *hdr;
1095         u16 flags, bitrate;
1096         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
1097         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
1098
1099         if (!txrate)
1100                 bitrate = 0;
1101         else
1102                 bitrate = txrate->bitrate;
1103
1104         if (!netif_running(hwsim_mon))
1105                 return;
1106
1107         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
1108         if (skb == NULL)
1109                 return;
1110
1111         hdr = skb_push(skb, sizeof(*hdr));
1112         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1113         hdr->hdr.it_pad = 0;
1114         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1115         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1116                                           (1 << IEEE80211_RADIOTAP_RATE) |
1117                                           (1 << IEEE80211_RADIOTAP_TSFT) |
1118                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
1119         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
1120         hdr->rt_flags = 0;
1121         hdr->rt_rate = bitrate / 5;
1122         hdr->rt_channel = cpu_to_le16(chan->center_freq);
1123         flags = IEEE80211_CHAN_2GHZ;
1124         if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
1125                 flags |= IEEE80211_CHAN_OFDM;
1126         else
1127                 flags |= IEEE80211_CHAN_CCK;
1128         hdr->rt_chbitmask = cpu_to_le16(flags);
1129
1130         skb->dev = hwsim_mon;
1131         skb_reset_mac_header(skb);
1132         skb->ip_summed = CHECKSUM_UNNECESSARY;
1133         skb->pkt_type = PACKET_OTHERHOST;
1134         skb->protocol = htons(ETH_P_802_2);
1135         memset(skb->cb, 0, sizeof(skb->cb));
1136         netif_rx(skb);
1137 }
1138
1139
1140 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
1141                                        const u8 *addr)
1142 {
1143         struct sk_buff *skb;
1144         struct hwsim_radiotap_ack_hdr *hdr;
1145         u16 flags;
1146         struct ieee80211_hdr *hdr11;
1147
1148         if (!netif_running(hwsim_mon))
1149                 return;
1150
1151         skb = dev_alloc_skb(100);
1152         if (skb == NULL)
1153                 return;
1154
1155         hdr = skb_put(skb, sizeof(*hdr));
1156         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1157         hdr->hdr.it_pad = 0;
1158         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1159         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1160                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
1161         hdr->rt_flags = 0;
1162         hdr->pad = 0;
1163         hdr->rt_channel = cpu_to_le16(chan->center_freq);
1164         flags = IEEE80211_CHAN_2GHZ;
1165         hdr->rt_chbitmask = cpu_to_le16(flags);
1166
1167         hdr11 = skb_put(skb, 10);
1168         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1169                                            IEEE80211_STYPE_ACK);
1170         hdr11->duration_id = cpu_to_le16(0);
1171         memcpy(hdr11->addr1, addr, ETH_ALEN);
1172
1173         skb->dev = hwsim_mon;
1174         skb_reset_mac_header(skb);
1175         skb->ip_summed = CHECKSUM_UNNECESSARY;
1176         skb->pkt_type = PACKET_OTHERHOST;
1177         skb->protocol = htons(ETH_P_802_2);
1178         memset(skb->cb, 0, sizeof(skb->cb));
1179         netif_rx(skb);
1180 }
1181
1182 struct mac80211_hwsim_addr_match_data {
1183         u8 addr[ETH_ALEN];
1184         bool ret;
1185 };
1186
1187 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
1188                                      struct ieee80211_vif *vif)
1189 {
1190         struct mac80211_hwsim_addr_match_data *md = data;
1191
1192         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
1193                 md->ret = true;
1194 }
1195
1196 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
1197                                       const u8 *addr)
1198 {
1199         struct mac80211_hwsim_addr_match_data md = {
1200                 .ret = false,
1201         };
1202
1203         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
1204                 return true;
1205
1206         memcpy(md.addr, addr, ETH_ALEN);
1207
1208         ieee80211_iterate_active_interfaces_atomic(data->hw,
1209                                                    IEEE80211_IFACE_ITER_NORMAL,
1210                                                    mac80211_hwsim_addr_iter,
1211                                                    &md);
1212
1213         return md.ret;
1214 }
1215
1216 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
1217                            struct sk_buff *skb)
1218 {
1219         switch (data->ps) {
1220         case PS_DISABLED:
1221                 return true;
1222         case PS_ENABLED:
1223                 return false;
1224         case PS_AUTO_POLL:
1225                 /* TODO: accept (some) Beacons by default and other frames only
1226                  * if pending PS-Poll has been sent */
1227                 return true;
1228         case PS_MANUAL_POLL:
1229                 /* Allow unicast frames to own address if there is a pending
1230                  * PS-Poll */
1231                 if (data->ps_poll_pending &&
1232                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
1233                         data->ps_poll_pending = false;
1234                         return true;
1235                 }
1236                 return false;
1237         }
1238
1239         return true;
1240 }
1241
1242 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1243                                   struct sk_buff *skb, int portid)
1244 {
1245         struct net *net;
1246         bool found = false;
1247         int res = -ENOENT;
1248
1249         rcu_read_lock();
1250         for_each_net_rcu(net) {
1251                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1252                         res = genlmsg_unicast(net, skb, portid);
1253                         found = true;
1254                         break;
1255                 }
1256         }
1257         rcu_read_unlock();
1258
1259         if (!found)
1260                 nlmsg_free(skb);
1261
1262         return res;
1263 }
1264
1265 static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
1266                                          const u8 *addr, bool add)
1267 {
1268         struct mac80211_hwsim_data *data = hw->priv;
1269         u32 _portid = READ_ONCE(data->wmediumd);
1270         struct sk_buff *skb;
1271         void *msg_head;
1272
1273         if (!_portid && !hwsim_virtio_enabled)
1274                 return;
1275
1276         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1277         if (!skb)
1278                 return;
1279
1280         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1281                                add ? HWSIM_CMD_ADD_MAC_ADDR :
1282                                      HWSIM_CMD_DEL_MAC_ADDR);
1283         if (!msg_head) {
1284                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1285                 goto nla_put_failure;
1286         }
1287
1288         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1289                     ETH_ALEN, data->addresses[1].addr))
1290                 goto nla_put_failure;
1291
1292         if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
1293                 goto nla_put_failure;
1294
1295         genlmsg_end(skb, msg_head);
1296
1297         if (hwsim_virtio_enabled)
1298                 hwsim_tx_virtio(data, skb);
1299         else
1300                 hwsim_unicast_netgroup(data, skb, _portid);
1301         return;
1302 nla_put_failure:
1303         nlmsg_free(skb);
1304 }
1305
1306 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1307 {
1308         u16 result = 0;
1309
1310         if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1311                 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1312         if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1313                 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1314         if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1315                 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1316         if (rate->flags & IEEE80211_TX_RC_MCS)
1317                 result |= MAC80211_HWSIM_TX_RC_MCS;
1318         if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1319                 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1320         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1321                 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1322         if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1323                 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1324         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1325                 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1326         if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1327                 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1328         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1329                 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1330         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1331                 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1332
1333         return result;
1334 }
1335
1336 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1337                                        struct sk_buff *my_skb,
1338                                        int dst_portid,
1339                                        struct ieee80211_channel *channel)
1340 {
1341         struct sk_buff *skb;
1342         struct mac80211_hwsim_data *data = hw->priv;
1343         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1344         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1345         void *msg_head;
1346         unsigned int hwsim_flags = 0;
1347         int i;
1348         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1349         struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1350         uintptr_t cookie;
1351
1352         if (data->ps != PS_DISABLED)
1353                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1354         /* If the queue contains MAX_QUEUE skb's drop some */
1355         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1356                 /* Dropping until WARN_QUEUE level */
1357                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1358                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1359                         data->tx_dropped++;
1360                 }
1361         }
1362
1363         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1364         if (skb == NULL)
1365                 goto nla_put_failure;
1366
1367         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1368                                HWSIM_CMD_FRAME);
1369         if (msg_head == NULL) {
1370                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1371                 goto nla_put_failure;
1372         }
1373
1374         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1375                     ETH_ALEN, data->addresses[1].addr))
1376                 goto nla_put_failure;
1377
1378         /* We get the skb->data */
1379         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1380                 goto nla_put_failure;
1381
1382         /* We get the flags for this transmission, and we translate them to
1383            wmediumd flags  */
1384
1385         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1386                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1387
1388         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1389                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1390
1391         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1392                 goto nla_put_failure;
1393
1394         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, channel->center_freq))
1395                 goto nla_put_failure;
1396
1397         /* We get the tx control (rate and retries) info*/
1398
1399         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1400                 tx_attempts[i].idx = info->status.rates[i].idx;
1401                 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1402                 tx_attempts[i].count = info->status.rates[i].count;
1403                 tx_attempts_flags[i].flags =
1404                                 trans_tx_rate_flags_ieee2hwsim(
1405                                                 &info->status.rates[i]);
1406         }
1407
1408         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1409                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1410                     tx_attempts))
1411                 goto nla_put_failure;
1412
1413         if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1414                     sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1415                     tx_attempts_flags))
1416                 goto nla_put_failure;
1417
1418         /* We create a cookie to identify this skb */
1419         data->pending_cookie++;
1420         cookie = data->pending_cookie;
1421         info->rate_driver_data[0] = (void *)cookie;
1422         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1423                 goto nla_put_failure;
1424
1425         genlmsg_end(skb, msg_head);
1426
1427         if (hwsim_virtio_enabled) {
1428                 if (hwsim_tx_virtio(data, skb))
1429                         goto err_free_txskb;
1430         } else {
1431                 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1432                         goto err_free_txskb;
1433         }
1434
1435         /* Enqueue the packet */
1436         skb_queue_tail(&data->pending, my_skb);
1437         data->tx_pkts++;
1438         data->tx_bytes += my_skb->len;
1439         return;
1440
1441 nla_put_failure:
1442         nlmsg_free(skb);
1443 err_free_txskb:
1444         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1445         ieee80211_free_txskb(hw, my_skb);
1446         data->tx_failed++;
1447 }
1448
1449 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1450                                struct ieee80211_channel *c2)
1451 {
1452         if (!c1 || !c2)
1453                 return false;
1454
1455         return c1->center_freq == c2->center_freq;
1456 }
1457
1458 struct tx_iter_data {
1459         struct ieee80211_channel *channel;
1460         bool receive;
1461 };
1462
1463 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1464                                    struct ieee80211_vif *vif)
1465 {
1466         struct tx_iter_data *data = _data;
1467
1468         if (!vif->chanctx_conf)
1469                 return;
1470
1471         if (!hwsim_chans_compat(data->channel,
1472                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1473                 return;
1474
1475         data->receive = true;
1476 }
1477
1478 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1479 {
1480         /*
1481          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1482          * e.g. like this:
1483          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1484          * (but you should use a valid OUI, not that)
1485          *
1486          * If anyone wants to 'donate' a radiotap OUI/subns code
1487          * please send a patch removing this #ifdef and changing
1488          * the values accordingly.
1489          */
1490 #ifdef HWSIM_RADIOTAP_OUI
1491         struct ieee80211_vendor_radiotap *rtap;
1492
1493         /*
1494          * Note that this code requires the headroom in the SKB
1495          * that was allocated earlier.
1496          */
1497         rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1498         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1499         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1500         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1501         rtap->subns = 127;
1502
1503         /*
1504          * Radiotap vendor namespaces can (and should) also be
1505          * split into fields by using the standard radiotap
1506          * presence bitmap mechanism. Use just BIT(0) here for
1507          * the presence bitmap.
1508          */
1509         rtap->present = BIT(0);
1510         /* We have 8 bytes of (dummy) data */
1511         rtap->len = 8;
1512         /* For testing, also require it to be aligned */
1513         rtap->align = 8;
1514         /* And also test that padding works, 4 bytes */
1515         rtap->pad = 4;
1516         /* push the data */
1517         memcpy(rtap->data, "ABCDEFGH", 8);
1518         /* make sure to clear padding, mac80211 doesn't */
1519         memset(rtap->data + 8, 0, 4);
1520
1521         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1522 #endif
1523 }
1524
1525 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1526                                           struct sk_buff *skb,
1527                                           struct ieee80211_channel *chan)
1528 {
1529         struct mac80211_hwsim_data *data = hw->priv, *data2;
1530         bool ack = false;
1531         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1532         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1533         struct ieee80211_rx_status rx_status;
1534         u64 now;
1535
1536         memset(&rx_status, 0, sizeof(rx_status));
1537         rx_status.flag |= RX_FLAG_MACTIME_START;
1538         rx_status.freq = chan->center_freq;
1539         rx_status.freq_offset = chan->freq_offset ? 1 : 0;
1540         rx_status.band = chan->band;
1541         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1542                 rx_status.rate_idx =
1543                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1544                 rx_status.nss =
1545                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1546                 rx_status.encoding = RX_ENC_VHT;
1547         } else {
1548                 rx_status.rate_idx = info->control.rates[0].idx;
1549                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1550                         rx_status.encoding = RX_ENC_HT;
1551         }
1552         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1553                 rx_status.bw = RATE_INFO_BW_40;
1554         else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1555                 rx_status.bw = RATE_INFO_BW_80;
1556         else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1557                 rx_status.bw = RATE_INFO_BW_160;
1558         else
1559                 rx_status.bw = RATE_INFO_BW_20;
1560         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1561                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1562         /* TODO: simulate optional packet loss */
1563         rx_status.signal = data->rx_rssi;
1564         if (info->control.vif)
1565                 rx_status.signal += info->control.vif->bss_conf.txpower;
1566
1567         if (data->ps != PS_DISABLED)
1568                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1569
1570         /* release the skb's source info */
1571         skb_orphan(skb);
1572         skb_dst_drop(skb);
1573         skb->mark = 0;
1574         skb_ext_reset(skb);
1575         nf_reset_ct(skb);
1576
1577         /*
1578          * Get absolute mactime here so all HWs RX at the "same time", and
1579          * absolute TX time for beacon mactime so the timestamp matches.
1580          * Giving beacons a different mactime than non-beacons looks messy, but
1581          * it helps the Toffset be exact and a ~10us mactime discrepancy
1582          * probably doesn't really matter.
1583          */
1584         if (ieee80211_is_beacon(hdr->frame_control) ||
1585             ieee80211_is_probe_resp(hdr->frame_control)) {
1586                 rx_status.boottime_ns = ktime_get_boottime_ns();
1587                 now = data->abs_bcn_ts;
1588         } else {
1589                 now = mac80211_hwsim_get_tsf_raw();
1590         }
1591
1592         /* Copy skb to all enabled radios that are on the current frequency */
1593         spin_lock(&hwsim_radio_lock);
1594         list_for_each_entry(data2, &hwsim_radios, list) {
1595                 struct sk_buff *nskb;
1596                 struct tx_iter_data tx_iter_data = {
1597                         .receive = false,
1598                         .channel = chan,
1599                 };
1600
1601                 if (data == data2)
1602                         continue;
1603
1604                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1605                     !hwsim_ps_rx_ok(data2, skb))
1606                         continue;
1607
1608                 if (!(data->group & data2->group))
1609                         continue;
1610
1611                 if (data->netgroup != data2->netgroup)
1612                         continue;
1613
1614                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1615                     !hwsim_chans_compat(chan, data2->channel)) {
1616                         ieee80211_iterate_active_interfaces_atomic(
1617                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1618                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1619                         if (!tx_iter_data.receive)
1620                                 continue;
1621                 }
1622
1623                 /*
1624                  * reserve some space for our vendor and the normal
1625                  * radiotap header, since we're copying anyway
1626                  */
1627                 if (skb->len < PAGE_SIZE && paged_rx) {
1628                         struct page *page = alloc_page(GFP_ATOMIC);
1629
1630                         if (!page)
1631                                 continue;
1632
1633                         nskb = dev_alloc_skb(128);
1634                         if (!nskb) {
1635                                 __free_page(page);
1636                                 continue;
1637                         }
1638
1639                         memcpy(page_address(page), skb->data, skb->len);
1640                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1641                 } else {
1642                         nskb = skb_copy(skb, GFP_ATOMIC);
1643                         if (!nskb)
1644                                 continue;
1645                 }
1646
1647                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1648                         ack = true;
1649
1650                 rx_status.mactime = now + data2->tsf_offset;
1651
1652                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1653
1654                 mac80211_hwsim_add_vendor_rtap(nskb);
1655
1656                 data2->rx_pkts++;
1657                 data2->rx_bytes += nskb->len;
1658                 ieee80211_rx_irqsafe(data2->hw, nskb);
1659         }
1660         spin_unlock(&hwsim_radio_lock);
1661
1662         return ack;
1663 }
1664
1665 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1666                               struct ieee80211_tx_control *control,
1667                               struct sk_buff *skb)
1668 {
1669         struct mac80211_hwsim_data *data = hw->priv;
1670         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1671         struct ieee80211_hdr *hdr = (void *)skb->data;
1672         struct ieee80211_chanctx_conf *chanctx_conf;
1673         struct ieee80211_channel *channel;
1674         bool ack;
1675         enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT;
1676         u32 _portid, i;
1677
1678         if (WARN_ON(skb->len < 10)) {
1679                 /* Should not happen; just a sanity check for addr1 use */
1680                 ieee80211_free_txskb(hw, skb);
1681                 return;
1682         }
1683
1684         if (!data->use_chanctx) {
1685                 channel = data->channel;
1686                 confbw = data->bw;
1687         } else if (txi->hw_queue == 4) {
1688                 channel = data->tmp_chan;
1689         } else {
1690                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1691                 if (chanctx_conf) {
1692                         channel = chanctx_conf->def.chan;
1693                         confbw = chanctx_conf->def.width;
1694                 } else {
1695                         channel = NULL;
1696                 }
1697         }
1698
1699         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1700                 ieee80211_free_txskb(hw, skb);
1701                 return;
1702         }
1703
1704         if (data->idle && !data->tmp_chan) {
1705                 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1706                 ieee80211_free_txskb(hw, skb);
1707                 return;
1708         }
1709
1710         if (txi->control.vif)
1711                 hwsim_check_magic(txi->control.vif);
1712         if (control->sta)
1713                 hwsim_check_sta_magic(control->sta);
1714
1715         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1716                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1717                                        txi->control.rates,
1718                                        ARRAY_SIZE(txi->control.rates));
1719
1720         for (i = 0; i < ARRAY_SIZE(txi->control.rates); i++) {
1721                 u16 rflags = txi->control.rates[i].flags;
1722                 /* initialize to data->bw for 5/10 MHz handling */
1723                 enum nl80211_chan_width bw = data->bw;
1724
1725                 if (txi->control.rates[i].idx == -1)
1726                         break;
1727
1728                 if (rflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1729                         bw = NL80211_CHAN_WIDTH_40;
1730                 else if (rflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1731                         bw = NL80211_CHAN_WIDTH_80;
1732                 else if (rflags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1733                         bw = NL80211_CHAN_WIDTH_160;
1734
1735                 if (WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw)))
1736                         return;
1737         }
1738
1739         if (skb->len >= 24 + 8 &&
1740             ieee80211_is_probe_resp(hdr->frame_control)) {
1741                 /* fake header transmission time */
1742                 struct ieee80211_mgmt *mgmt;
1743                 struct ieee80211_rate *txrate;
1744                 /* TODO: get MCS */
1745                 int bitrate = 100;
1746                 u64 ts;
1747
1748                 mgmt = (struct ieee80211_mgmt *)skb->data;
1749                 txrate = ieee80211_get_tx_rate(hw, txi);
1750                 if (txrate)
1751                         bitrate = txrate->bitrate;
1752                 ts = mac80211_hwsim_get_tsf_raw();
1753                 mgmt->u.probe_resp.timestamp =
1754                         cpu_to_le64(ts + data->tsf_offset +
1755                                     24 * 8 * 10 / bitrate);
1756         }
1757
1758         mac80211_hwsim_monitor_rx(hw, skb, channel);
1759
1760         /* wmediumd mode check */
1761         _portid = READ_ONCE(data->wmediumd);
1762
1763         if (_portid || hwsim_virtio_enabled)
1764                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid, channel);
1765
1766         /* NO wmediumd detected, perfect medium simulation */
1767         data->tx_pkts++;
1768         data->tx_bytes += skb->len;
1769         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1770
1771         if (ack && skb->len >= 16)
1772                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1773
1774         ieee80211_tx_info_clear_status(txi);
1775
1776         /* frame was transmitted at most favorable rate at first attempt */
1777         txi->control.rates[0].count = 1;
1778         txi->control.rates[1].idx = -1;
1779
1780         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1781                 txi->flags |= IEEE80211_TX_STAT_ACK;
1782         ieee80211_tx_status_irqsafe(hw, skb);
1783 }
1784
1785
1786 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1787 {
1788         struct mac80211_hwsim_data *data = hw->priv;
1789         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1790         data->started = true;
1791         return 0;
1792 }
1793
1794
1795 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1796 {
1797         struct mac80211_hwsim_data *data = hw->priv;
1798
1799         data->started = false;
1800         hrtimer_cancel(&data->beacon_timer);
1801
1802         while (!skb_queue_empty(&data->pending))
1803                 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1804
1805         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1806 }
1807
1808
1809 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1810                                         struct ieee80211_vif *vif)
1811 {
1812         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1813                   __func__, ieee80211_vif_type_p2p(vif),
1814                   vif->addr);
1815         hwsim_set_magic(vif);
1816
1817         if (vif->type != NL80211_IFTYPE_MONITOR)
1818                 mac80211_hwsim_config_mac_nl(hw, vif->addr, true);
1819
1820         vif->cab_queue = 0;
1821         vif->hw_queue[IEEE80211_AC_VO] = 0;
1822         vif->hw_queue[IEEE80211_AC_VI] = 1;
1823         vif->hw_queue[IEEE80211_AC_BE] = 2;
1824         vif->hw_queue[IEEE80211_AC_BK] = 3;
1825
1826         return 0;
1827 }
1828
1829
1830 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1831                                            struct ieee80211_vif *vif,
1832                                            enum nl80211_iftype newtype,
1833                                            bool newp2p)
1834 {
1835         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1836         wiphy_dbg(hw->wiphy,
1837                   "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1838                   __func__, ieee80211_vif_type_p2p(vif),
1839                     newtype, vif->addr);
1840         hwsim_check_magic(vif);
1841
1842         /*
1843          * interface may change from non-AP to AP in
1844          * which case this needs to be set up again
1845          */
1846         vif->cab_queue = 0;
1847
1848         return 0;
1849 }
1850
1851 static void mac80211_hwsim_remove_interface(
1852         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1853 {
1854         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1855                   __func__, ieee80211_vif_type_p2p(vif),
1856                   vif->addr);
1857         hwsim_check_magic(vif);
1858         hwsim_clear_magic(vif);
1859         if (vif->type != NL80211_IFTYPE_MONITOR)
1860                 mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
1861 }
1862
1863 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1864                                     struct sk_buff *skb,
1865                                     struct ieee80211_channel *chan)
1866 {
1867         struct mac80211_hwsim_data *data = hw->priv;
1868         u32 _pid = READ_ONCE(data->wmediumd);
1869
1870         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1871                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1872                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1873                                        txi->control.rates,
1874                                        ARRAY_SIZE(txi->control.rates));
1875         }
1876
1877         mac80211_hwsim_monitor_rx(hw, skb, chan);
1878
1879         if (_pid || hwsim_virtio_enabled)
1880                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid, chan);
1881
1882         data->tx_pkts++;
1883         data->tx_bytes += skb->len;
1884         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1885         dev_kfree_skb(skb);
1886 }
1887
1888 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1889                                      struct ieee80211_vif *vif)
1890 {
1891         struct mac80211_hwsim_data *data = arg;
1892         struct ieee80211_hw *hw = data->hw;
1893         struct ieee80211_tx_info *info;
1894         struct ieee80211_rate *txrate;
1895         struct ieee80211_mgmt *mgmt;
1896         struct sk_buff *skb;
1897         /* TODO: get MCS */
1898         int bitrate = 100;
1899
1900         hwsim_check_magic(vif);
1901
1902         if (vif->type != NL80211_IFTYPE_AP &&
1903             vif->type != NL80211_IFTYPE_MESH_POINT &&
1904             vif->type != NL80211_IFTYPE_ADHOC &&
1905             vif->type != NL80211_IFTYPE_OCB)
1906                 return;
1907
1908         skb = ieee80211_beacon_get(hw, vif);
1909         if (skb == NULL)
1910                 return;
1911         info = IEEE80211_SKB_CB(skb);
1912         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1913                 ieee80211_get_tx_rates(vif, NULL, skb,
1914                                        info->control.rates,
1915                                        ARRAY_SIZE(info->control.rates));
1916
1917         txrate = ieee80211_get_tx_rate(hw, info);
1918         if (txrate)
1919                 bitrate = txrate->bitrate;
1920
1921         mgmt = (struct ieee80211_mgmt *) skb->data;
1922         /* fake header transmission time */
1923         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1924         if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
1925                 struct ieee80211_ext *ext = (void *) mgmt;
1926
1927                 ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
1928                                                           data->tsf_offset +
1929                                                           10 * 8 * 10 /
1930                                                           bitrate);
1931         } else {
1932                 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1933                                                        data->tsf_offset +
1934                                                        24 * 8 * 10 /
1935                                                        bitrate);
1936         }
1937
1938         mac80211_hwsim_tx_frame(hw, skb,
1939                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1940
1941         while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
1942                 mac80211_hwsim_tx_frame(hw, skb,
1943                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1944         }
1945
1946         if (vif->csa_active && ieee80211_beacon_cntdwn_is_complete(vif))
1947                 ieee80211_csa_finish(vif);
1948 }
1949
1950 static enum hrtimer_restart
1951 mac80211_hwsim_beacon(struct hrtimer *timer)
1952 {
1953         struct mac80211_hwsim_data *data =
1954                 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1955         struct ieee80211_hw *hw = data->hw;
1956         u64 bcn_int = data->beacon_int;
1957
1958         if (!data->started)
1959                 return HRTIMER_NORESTART;
1960
1961         ieee80211_iterate_active_interfaces_atomic(
1962                 hw, IEEE80211_IFACE_ITER_NORMAL,
1963                 mac80211_hwsim_beacon_tx, data);
1964
1965         /* beacon at new TBTT + beacon interval */
1966         if (data->bcn_delta) {
1967                 bcn_int -= data->bcn_delta;
1968                 data->bcn_delta = 0;
1969         }
1970         hrtimer_forward_now(&data->beacon_timer,
1971                             ns_to_ktime(bcn_int * NSEC_PER_USEC));
1972         return HRTIMER_RESTART;
1973 }
1974
1975 static const char * const hwsim_chanwidths[] = {
1976         [NL80211_CHAN_WIDTH_5] = "ht5",
1977         [NL80211_CHAN_WIDTH_10] = "ht10",
1978         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1979         [NL80211_CHAN_WIDTH_20] = "ht20",
1980         [NL80211_CHAN_WIDTH_40] = "ht40",
1981         [NL80211_CHAN_WIDTH_80] = "vht80",
1982         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1983         [NL80211_CHAN_WIDTH_160] = "vht160",
1984         [NL80211_CHAN_WIDTH_1] = "1MHz",
1985         [NL80211_CHAN_WIDTH_2] = "2MHz",
1986         [NL80211_CHAN_WIDTH_4] = "4MHz",
1987         [NL80211_CHAN_WIDTH_8] = "8MHz",
1988         [NL80211_CHAN_WIDTH_16] = "16MHz",
1989 };
1990
1991 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1992 {
1993         struct mac80211_hwsim_data *data = hw->priv;
1994         struct ieee80211_conf *conf = &hw->conf;
1995         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1996                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1997                 [IEEE80211_SMPS_OFF] = "off",
1998                 [IEEE80211_SMPS_STATIC] = "static",
1999                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
2000         };
2001         int idx;
2002
2003         if (conf->chandef.chan)
2004                 wiphy_dbg(hw->wiphy,
2005                           "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
2006                           __func__,
2007                           conf->chandef.chan->center_freq,
2008                           conf->chandef.center_freq1,
2009                           conf->chandef.center_freq2,
2010                           hwsim_chanwidths[conf->chandef.width],
2011                           !!(conf->flags & IEEE80211_CONF_IDLE),
2012                           !!(conf->flags & IEEE80211_CONF_PS),
2013                           smps_modes[conf->smps_mode]);
2014         else
2015                 wiphy_dbg(hw->wiphy,
2016                           "%s (freq=0 idle=%d ps=%d smps=%s)\n",
2017                           __func__,
2018                           !!(conf->flags & IEEE80211_CONF_IDLE),
2019                           !!(conf->flags & IEEE80211_CONF_PS),
2020                           smps_modes[conf->smps_mode]);
2021
2022         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
2023
2024         WARN_ON(conf->chandef.chan && data->use_chanctx);
2025
2026         mutex_lock(&data->mutex);
2027         if (data->scanning && conf->chandef.chan) {
2028                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
2029                         if (data->survey_data[idx].channel == data->channel) {
2030                                 data->survey_data[idx].start =
2031                                         data->survey_data[idx].next_start;
2032                                 data->survey_data[idx].end = jiffies;
2033                                 break;
2034                         }
2035                 }
2036
2037                 data->channel = conf->chandef.chan;
2038                 data->bw = conf->chandef.width;
2039
2040                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
2041                         if (data->survey_data[idx].channel &&
2042                             data->survey_data[idx].channel != data->channel)
2043                                 continue;
2044                         data->survey_data[idx].channel = data->channel;
2045                         data->survey_data[idx].next_start = jiffies;
2046                         break;
2047                 }
2048         } else {
2049                 data->channel = conf->chandef.chan;
2050                 data->bw = conf->chandef.width;
2051         }
2052         mutex_unlock(&data->mutex);
2053
2054         if (!data->started || !data->beacon_int)
2055                 hrtimer_cancel(&data->beacon_timer);
2056         else if (!hrtimer_is_queued(&data->beacon_timer)) {
2057                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
2058                 u32 bcn_int = data->beacon_int;
2059                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
2060
2061                 hrtimer_start(&data->beacon_timer,
2062                               ns_to_ktime(until_tbtt * NSEC_PER_USEC),
2063                               HRTIMER_MODE_REL_SOFT);
2064         }
2065
2066         return 0;
2067 }
2068
2069
2070 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
2071                                             unsigned int changed_flags,
2072                                             unsigned int *total_flags,u64 multicast)
2073 {
2074         struct mac80211_hwsim_data *data = hw->priv;
2075
2076         wiphy_dbg(hw->wiphy, "%s\n", __func__);
2077
2078         data->rx_filter = 0;
2079         if (*total_flags & FIF_ALLMULTI)
2080                 data->rx_filter |= FIF_ALLMULTI;
2081         if (*total_flags & FIF_MCAST_ACTION)
2082                 data->rx_filter |= FIF_MCAST_ACTION;
2083
2084         *total_flags = data->rx_filter;
2085 }
2086
2087 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
2088                                        struct ieee80211_vif *vif)
2089 {
2090         unsigned int *count = data;
2091         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
2092
2093         if (vp->bcn_en)
2094                 (*count)++;
2095 }
2096
2097 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
2098                                             struct ieee80211_vif *vif,
2099                                             struct ieee80211_bss_conf *info,
2100                                             u32 changed)
2101 {
2102         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
2103         struct mac80211_hwsim_data *data = hw->priv;
2104
2105         hwsim_check_magic(vif);
2106
2107         wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
2108                   __func__, changed, vif->addr);
2109
2110         if (changed & BSS_CHANGED_BSSID) {
2111                 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
2112                           __func__, info->bssid);
2113                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
2114         }
2115
2116         if (changed & BSS_CHANGED_ASSOC) {
2117                 wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
2118                           info->assoc, info->aid);
2119                 vp->assoc = info->assoc;
2120                 vp->aid = info->aid;
2121         }
2122
2123         if (changed & BSS_CHANGED_BEACON_ENABLED) {
2124                 wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
2125                           info->enable_beacon, info->beacon_int);
2126                 vp->bcn_en = info->enable_beacon;
2127                 if (data->started &&
2128                     !hrtimer_is_queued(&data->beacon_timer) &&
2129                     info->enable_beacon) {
2130                         u64 tsf, until_tbtt;
2131                         u32 bcn_int;
2132                         data->beacon_int = info->beacon_int * 1024;
2133                         tsf = mac80211_hwsim_get_tsf(hw, vif);
2134                         bcn_int = data->beacon_int;
2135                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
2136
2137                         hrtimer_start(&data->beacon_timer,
2138                                       ns_to_ktime(until_tbtt * NSEC_PER_USEC),
2139                                       HRTIMER_MODE_REL_SOFT);
2140                 } else if (!info->enable_beacon) {
2141                         unsigned int count = 0;
2142                         ieee80211_iterate_active_interfaces_atomic(
2143                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
2144                                 mac80211_hwsim_bcn_en_iter, &count);
2145                         wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
2146                                   count);
2147                         if (count == 0) {
2148                                 hrtimer_cancel(&data->beacon_timer);
2149                                 data->beacon_int = 0;
2150                         }
2151                 }
2152         }
2153
2154         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
2155                 wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
2156                           info->use_cts_prot);
2157         }
2158
2159         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
2160                 wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
2161                           info->use_short_preamble);
2162         }
2163
2164         if (changed & BSS_CHANGED_ERP_SLOT) {
2165                 wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
2166         }
2167
2168         if (changed & BSS_CHANGED_HT) {
2169                 wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
2170                           info->ht_operation_mode);
2171         }
2172
2173         if (changed & BSS_CHANGED_BASIC_RATES) {
2174                 wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
2175                           (unsigned long long) info->basic_rates);
2176         }
2177
2178         if (changed & BSS_CHANGED_TXPOWER)
2179                 wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
2180 }
2181
2182 static void
2183 mac80211_hwsim_sta_rc_update(struct ieee80211_hw *hw,
2184                              struct ieee80211_vif *vif,
2185                              struct ieee80211_sta *sta,
2186                              u32 changed)
2187 {
2188         struct mac80211_hwsim_data *data = hw->priv;
2189         u32 bw = U32_MAX;
2190         enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT;
2191
2192         switch (sta->deflink.bandwidth) {
2193 #define C(_bw) case IEEE80211_STA_RX_BW_##_bw: bw = _bw; break
2194         C(20);
2195         C(40);
2196         C(80);
2197         C(160);
2198         C(320);
2199 #undef C
2200         }
2201
2202         if (!data->use_chanctx) {
2203                 confbw = data->bw;
2204         } else {
2205                 struct ieee80211_chanctx_conf *chanctx_conf;
2206
2207                 rcu_read_lock();
2208                 chanctx_conf = rcu_dereference(vif->chanctx_conf);
2209
2210                 if (!WARN_ON(!chanctx_conf))
2211                         confbw = chanctx_conf->def.width;
2212                 rcu_read_unlock();
2213         }
2214
2215         WARN(bw > hwsim_get_chanwidth(confbw),
2216              "intf %pM: bad STA %pM bandwidth %d MHz (%d) > channel config %d MHz (%d)\n",
2217              vif->addr, sta->addr, bw, sta->deflink.bandwidth,
2218              hwsim_get_chanwidth(data->bw), data->bw);
2219 }
2220
2221 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
2222                                   struct ieee80211_vif *vif,
2223                                   struct ieee80211_sta *sta)
2224 {
2225         hwsim_check_magic(vif);
2226         hwsim_set_sta_magic(sta);
2227         mac80211_hwsim_sta_rc_update(hw, vif, sta, 0);
2228
2229         return 0;
2230 }
2231
2232 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
2233                                      struct ieee80211_vif *vif,
2234                                      struct ieee80211_sta *sta)
2235 {
2236         hwsim_check_magic(vif);
2237         hwsim_clear_sta_magic(sta);
2238
2239         return 0;
2240 }
2241
2242 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
2243                                       struct ieee80211_vif *vif,
2244                                       enum sta_notify_cmd cmd,
2245                                       struct ieee80211_sta *sta)
2246 {
2247         hwsim_check_magic(vif);
2248
2249         switch (cmd) {
2250         case STA_NOTIFY_SLEEP:
2251         case STA_NOTIFY_AWAKE:
2252                 /* TODO: make good use of these flags */
2253                 break;
2254         default:
2255                 WARN(1, "Invalid sta notify: %d\n", cmd);
2256                 break;
2257         }
2258 }
2259
2260 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
2261                                   struct ieee80211_sta *sta,
2262                                   bool set)
2263 {
2264         hwsim_check_sta_magic(sta);
2265         return 0;
2266 }
2267
2268 static int mac80211_hwsim_conf_tx(
2269         struct ieee80211_hw *hw,
2270         struct ieee80211_vif *vif, u16 queue,
2271         const struct ieee80211_tx_queue_params *params)
2272 {
2273         wiphy_dbg(hw->wiphy,
2274                   "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
2275                   __func__, queue,
2276                   params->txop, params->cw_min,
2277                   params->cw_max, params->aifs);
2278         return 0;
2279 }
2280
2281 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
2282                                      struct survey_info *survey)
2283 {
2284         struct mac80211_hwsim_data *hwsim = hw->priv;
2285
2286         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
2287                 return -ENOENT;
2288
2289         mutex_lock(&hwsim->mutex);
2290         survey->channel = hwsim->survey_data[idx].channel;
2291         if (!survey->channel) {
2292                 mutex_unlock(&hwsim->mutex);
2293                 return -ENOENT;
2294         }
2295
2296         /*
2297          * Magically conjured dummy values --- this is only ok for simulated hardware.
2298          *
2299          * A real driver which cannot determine real values noise MUST NOT
2300          * report any, especially not a magically conjured ones :-)
2301          */
2302         survey->filled = SURVEY_INFO_NOISE_DBM |
2303                          SURVEY_INFO_TIME |
2304                          SURVEY_INFO_TIME_BUSY;
2305         survey->noise = -92;
2306         survey->time =
2307                 jiffies_to_msecs(hwsim->survey_data[idx].end -
2308                                  hwsim->survey_data[idx].start);
2309         /* report 12.5% of channel time is used */
2310         survey->time_busy = survey->time/8;
2311         mutex_unlock(&hwsim->mutex);
2312
2313         return 0;
2314 }
2315
2316 #ifdef CONFIG_NL80211_TESTMODE
2317 /*
2318  * This section contains example code for using netlink
2319  * attributes with the testmode command in nl80211.
2320  */
2321
2322 /* These enums need to be kept in sync with userspace */
2323 enum hwsim_testmode_attr {
2324         __HWSIM_TM_ATTR_INVALID = 0,
2325         HWSIM_TM_ATTR_CMD       = 1,
2326         HWSIM_TM_ATTR_PS        = 2,
2327
2328         /* keep last */
2329         __HWSIM_TM_ATTR_AFTER_LAST,
2330         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
2331 };
2332
2333 enum hwsim_testmode_cmd {
2334         HWSIM_TM_CMD_SET_PS             = 0,
2335         HWSIM_TM_CMD_GET_PS             = 1,
2336         HWSIM_TM_CMD_STOP_QUEUES        = 2,
2337         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
2338 };
2339
2340 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
2341         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
2342         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
2343 };
2344
2345 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
2346                                        struct ieee80211_vif *vif,
2347                                        void *data, int len)
2348 {
2349         struct mac80211_hwsim_data *hwsim = hw->priv;
2350         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
2351         struct sk_buff *skb;
2352         int err, ps;
2353
2354         err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
2355                                    hwsim_testmode_policy, NULL);
2356         if (err)
2357                 return err;
2358
2359         if (!tb[HWSIM_TM_ATTR_CMD])
2360                 return -EINVAL;
2361
2362         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
2363         case HWSIM_TM_CMD_SET_PS:
2364                 if (!tb[HWSIM_TM_ATTR_PS])
2365                         return -EINVAL;
2366                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
2367                 return hwsim_fops_ps_write(hwsim, ps);
2368         case HWSIM_TM_CMD_GET_PS:
2369                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
2370                                                 nla_total_size(sizeof(u32)));
2371                 if (!skb)
2372                         return -ENOMEM;
2373                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
2374                         goto nla_put_failure;
2375                 return cfg80211_testmode_reply(skb);
2376         case HWSIM_TM_CMD_STOP_QUEUES:
2377                 ieee80211_stop_queues(hw);
2378                 return 0;
2379         case HWSIM_TM_CMD_WAKE_QUEUES:
2380                 ieee80211_wake_queues(hw);
2381                 return 0;
2382         default:
2383                 return -EOPNOTSUPP;
2384         }
2385
2386  nla_put_failure:
2387         kfree_skb(skb);
2388         return -ENOBUFS;
2389 }
2390 #endif
2391
2392 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
2393                                        struct ieee80211_vif *vif,
2394                                        struct ieee80211_ampdu_params *params)
2395 {
2396         struct ieee80211_sta *sta = params->sta;
2397         enum ieee80211_ampdu_mlme_action action = params->action;
2398         u16 tid = params->tid;
2399
2400         switch (action) {
2401         case IEEE80211_AMPDU_TX_START:
2402                 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
2403         case IEEE80211_AMPDU_TX_STOP_CONT:
2404         case IEEE80211_AMPDU_TX_STOP_FLUSH:
2405         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2406                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2407                 break;
2408         case IEEE80211_AMPDU_TX_OPERATIONAL:
2409                 break;
2410         case IEEE80211_AMPDU_RX_START:
2411         case IEEE80211_AMPDU_RX_STOP:
2412                 break;
2413         default:
2414                 return -EOPNOTSUPP;
2415         }
2416
2417         return 0;
2418 }
2419
2420 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2421                                  struct ieee80211_vif *vif,
2422                                  u32 queues, bool drop)
2423 {
2424         /* Not implemented, queues only on kernel side */
2425 }
2426
2427 static void hw_scan_work(struct work_struct *work)
2428 {
2429         struct mac80211_hwsim_data *hwsim =
2430                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2431         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2432         int dwell, i;
2433
2434         mutex_lock(&hwsim->mutex);
2435         if (hwsim->scan_chan_idx >= req->n_channels) {
2436                 struct cfg80211_scan_info info = {
2437                         .aborted = false,
2438                 };
2439
2440                 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2441                 ieee80211_scan_completed(hwsim->hw, &info);
2442                 hwsim->hw_scan_request = NULL;
2443                 hwsim->hw_scan_vif = NULL;
2444                 hwsim->tmp_chan = NULL;
2445                 mutex_unlock(&hwsim->mutex);
2446                 mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
2447                                              false);
2448                 return;
2449         }
2450
2451         wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2452                   req->channels[hwsim->scan_chan_idx]->center_freq);
2453
2454         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2455         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2456                                       IEEE80211_CHAN_RADAR) ||
2457             !req->n_ssids) {
2458                 dwell = 120;
2459         } else {
2460                 dwell = 30;
2461                 /* send probes */
2462                 for (i = 0; i < req->n_ssids; i++) {
2463                         struct sk_buff *probe;
2464                         struct ieee80211_mgmt *mgmt;
2465
2466                         probe = ieee80211_probereq_get(hwsim->hw,
2467                                                        hwsim->scan_addr,
2468                                                        req->ssids[i].ssid,
2469                                                        req->ssids[i].ssid_len,
2470                                                        req->ie_len);
2471                         if (!probe)
2472                                 continue;
2473
2474                         mgmt = (struct ieee80211_mgmt *) probe->data;
2475                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2476                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2477
2478                         if (req->ie_len)
2479                                 skb_put_data(probe, req->ie, req->ie_len);
2480
2481                         rcu_read_lock();
2482                         if (!ieee80211_tx_prepare_skb(hwsim->hw,
2483                                                       hwsim->hw_scan_vif,
2484                                                       probe,
2485                                                       hwsim->tmp_chan->band,
2486                                                       NULL)) {
2487                                 rcu_read_unlock();
2488                                 kfree_skb(probe);
2489                                 continue;
2490                         }
2491
2492                         local_bh_disable();
2493                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2494                                                 hwsim->tmp_chan);
2495                         rcu_read_unlock();
2496                         local_bh_enable();
2497                 }
2498         }
2499         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2500                                      msecs_to_jiffies(dwell));
2501         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2502         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2503         hwsim->survey_data[hwsim->scan_chan_idx].end =
2504                 jiffies + msecs_to_jiffies(dwell);
2505         hwsim->scan_chan_idx++;
2506         mutex_unlock(&hwsim->mutex);
2507 }
2508
2509 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2510                                   struct ieee80211_vif *vif,
2511                                   struct ieee80211_scan_request *hw_req)
2512 {
2513         struct mac80211_hwsim_data *hwsim = hw->priv;
2514         struct cfg80211_scan_request *req = &hw_req->req;
2515
2516         mutex_lock(&hwsim->mutex);
2517         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2518                 mutex_unlock(&hwsim->mutex);
2519                 return -EBUSY;
2520         }
2521         hwsim->hw_scan_request = req;
2522         hwsim->hw_scan_vif = vif;
2523         hwsim->scan_chan_idx = 0;
2524         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2525                 get_random_mask_addr(hwsim->scan_addr,
2526                                      hw_req->req.mac_addr,
2527                                      hw_req->req.mac_addr_mask);
2528         else
2529                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2530         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2531         mutex_unlock(&hwsim->mutex);
2532
2533         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2534         wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2535
2536         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2537
2538         return 0;
2539 }
2540
2541 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2542                                           struct ieee80211_vif *vif)
2543 {
2544         struct mac80211_hwsim_data *hwsim = hw->priv;
2545         struct cfg80211_scan_info info = {
2546                 .aborted = true,
2547         };
2548
2549         wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2550
2551         cancel_delayed_work_sync(&hwsim->hw_scan);
2552
2553         mutex_lock(&hwsim->mutex);
2554         ieee80211_scan_completed(hwsim->hw, &info);
2555         hwsim->tmp_chan = NULL;
2556         hwsim->hw_scan_request = NULL;
2557         hwsim->hw_scan_vif = NULL;
2558         mutex_unlock(&hwsim->mutex);
2559 }
2560
2561 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2562                                    struct ieee80211_vif *vif,
2563                                    const u8 *mac_addr)
2564 {
2565         struct mac80211_hwsim_data *hwsim = hw->priv;
2566
2567         mutex_lock(&hwsim->mutex);
2568
2569         if (hwsim->scanning) {
2570                 pr_debug("two hwsim sw_scans detected!\n");
2571                 goto out;
2572         }
2573
2574         pr_debug("hwsim sw_scan request, prepping stuff\n");
2575
2576         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2577         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2578         hwsim->scanning = true;
2579         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2580
2581 out:
2582         mutex_unlock(&hwsim->mutex);
2583 }
2584
2585 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2586                                             struct ieee80211_vif *vif)
2587 {
2588         struct mac80211_hwsim_data *hwsim = hw->priv;
2589
2590         mutex_lock(&hwsim->mutex);
2591
2592         pr_debug("hwsim sw_scan_complete\n");
2593         hwsim->scanning = false;
2594         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
2595         eth_zero_addr(hwsim->scan_addr);
2596
2597         mutex_unlock(&hwsim->mutex);
2598 }
2599
2600 static void hw_roc_start(struct work_struct *work)
2601 {
2602         struct mac80211_hwsim_data *hwsim =
2603                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2604
2605         mutex_lock(&hwsim->mutex);
2606
2607         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2608         hwsim->tmp_chan = hwsim->roc_chan;
2609         ieee80211_ready_on_channel(hwsim->hw);
2610
2611         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2612                                      msecs_to_jiffies(hwsim->roc_duration));
2613
2614         mutex_unlock(&hwsim->mutex);
2615 }
2616
2617 static void hw_roc_done(struct work_struct *work)
2618 {
2619         struct mac80211_hwsim_data *hwsim =
2620                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2621
2622         mutex_lock(&hwsim->mutex);
2623         ieee80211_remain_on_channel_expired(hwsim->hw);
2624         hwsim->tmp_chan = NULL;
2625         mutex_unlock(&hwsim->mutex);
2626
2627         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2628 }
2629
2630 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2631                               struct ieee80211_vif *vif,
2632                               struct ieee80211_channel *chan,
2633                               int duration,
2634                               enum ieee80211_roc_type type)
2635 {
2636         struct mac80211_hwsim_data *hwsim = hw->priv;
2637
2638         mutex_lock(&hwsim->mutex);
2639         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2640                 mutex_unlock(&hwsim->mutex);
2641                 return -EBUSY;
2642         }
2643
2644         hwsim->roc_chan = chan;
2645         hwsim->roc_duration = duration;
2646         mutex_unlock(&hwsim->mutex);
2647
2648         wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2649                   chan->center_freq, duration);
2650         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2651
2652         return 0;
2653 }
2654
2655 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2656                                struct ieee80211_vif *vif)
2657 {
2658         struct mac80211_hwsim_data *hwsim = hw->priv;
2659
2660         cancel_delayed_work_sync(&hwsim->roc_start);
2661         cancel_delayed_work_sync(&hwsim->roc_done);
2662
2663         mutex_lock(&hwsim->mutex);
2664         hwsim->tmp_chan = NULL;
2665         mutex_unlock(&hwsim->mutex);
2666
2667         wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2668
2669         return 0;
2670 }
2671
2672 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2673                                       struct ieee80211_chanctx_conf *ctx)
2674 {
2675         struct mac80211_hwsim_data *hwsim = hw->priv;
2676
2677         mutex_lock(&hwsim->mutex);
2678         hwsim->chanctx = ctx;
2679         mutex_unlock(&hwsim->mutex);
2680         hwsim_set_chanctx_magic(ctx);
2681         wiphy_dbg(hw->wiphy,
2682                   "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2683                   ctx->def.chan->center_freq, ctx->def.width,
2684                   ctx->def.center_freq1, ctx->def.center_freq2);
2685         return 0;
2686 }
2687
2688 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2689                                           struct ieee80211_chanctx_conf *ctx)
2690 {
2691         struct mac80211_hwsim_data *hwsim = hw->priv;
2692
2693         mutex_lock(&hwsim->mutex);
2694         hwsim->chanctx = NULL;
2695         mutex_unlock(&hwsim->mutex);
2696         wiphy_dbg(hw->wiphy,
2697                   "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2698                   ctx->def.chan->center_freq, ctx->def.width,
2699                   ctx->def.center_freq1, ctx->def.center_freq2);
2700         hwsim_check_chanctx_magic(ctx);
2701         hwsim_clear_chanctx_magic(ctx);
2702 }
2703
2704 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2705                                           struct ieee80211_chanctx_conf *ctx,
2706                                           u32 changed)
2707 {
2708         struct mac80211_hwsim_data *hwsim = hw->priv;
2709
2710         mutex_lock(&hwsim->mutex);
2711         hwsim->chanctx = ctx;
2712         mutex_unlock(&hwsim->mutex);
2713         hwsim_check_chanctx_magic(ctx);
2714         wiphy_dbg(hw->wiphy,
2715                   "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2716                   ctx->def.chan->center_freq, ctx->def.width,
2717                   ctx->def.center_freq1, ctx->def.center_freq2);
2718 }
2719
2720 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2721                                              struct ieee80211_vif *vif,
2722                                              struct ieee80211_chanctx_conf *ctx)
2723 {
2724         hwsim_check_magic(vif);
2725         hwsim_check_chanctx_magic(ctx);
2726
2727         return 0;
2728 }
2729
2730 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2731                                                 struct ieee80211_vif *vif,
2732                                                 struct ieee80211_chanctx_conf *ctx)
2733 {
2734         hwsim_check_magic(vif);
2735         hwsim_check_chanctx_magic(ctx);
2736 }
2737
2738 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2739         "tx_pkts_nic",
2740         "tx_bytes_nic",
2741         "rx_pkts_nic",
2742         "rx_bytes_nic",
2743         "d_tx_dropped",
2744         "d_tx_failed",
2745         "d_ps_mode",
2746         "d_group",
2747 };
2748
2749 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2750
2751 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2752                                           struct ieee80211_vif *vif,
2753                                           u32 sset, u8 *data)
2754 {
2755         if (sset == ETH_SS_STATS)
2756                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2757                        sizeof(mac80211_hwsim_gstrings_stats));
2758 }
2759
2760 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2761                                             struct ieee80211_vif *vif, int sset)
2762 {
2763         if (sset == ETH_SS_STATS)
2764                 return MAC80211_HWSIM_SSTATS_LEN;
2765         return 0;
2766 }
2767
2768 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2769                                         struct ieee80211_vif *vif,
2770                                         struct ethtool_stats *stats, u64 *data)
2771 {
2772         struct mac80211_hwsim_data *ar = hw->priv;
2773         int i = 0;
2774
2775         data[i++] = ar->tx_pkts;
2776         data[i++] = ar->tx_bytes;
2777         data[i++] = ar->rx_pkts;
2778         data[i++] = ar->rx_bytes;
2779         data[i++] = ar->tx_dropped;
2780         data[i++] = ar->tx_failed;
2781         data[i++] = ar->ps;
2782         data[i++] = ar->group;
2783
2784         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2785 }
2786
2787 static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
2788 {
2789         return 1;
2790 }
2791
2792 #define HWSIM_COMMON_OPS                                        \
2793         .tx = mac80211_hwsim_tx,                                \
2794         .start = mac80211_hwsim_start,                          \
2795         .stop = mac80211_hwsim_stop,                            \
2796         .add_interface = mac80211_hwsim_add_interface,          \
2797         .change_interface = mac80211_hwsim_change_interface,    \
2798         .remove_interface = mac80211_hwsim_remove_interface,    \
2799         .config = mac80211_hwsim_config,                        \
2800         .configure_filter = mac80211_hwsim_configure_filter,    \
2801         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2802         .tx_last_beacon = mac80211_hwsim_tx_last_beacon,        \
2803         .sta_add = mac80211_hwsim_sta_add,                      \
2804         .sta_remove = mac80211_hwsim_sta_remove,                \
2805         .sta_notify = mac80211_hwsim_sta_notify,                \
2806         .sta_rc_update = mac80211_hwsim_sta_rc_update,          \
2807         .set_tim = mac80211_hwsim_set_tim,                      \
2808         .conf_tx = mac80211_hwsim_conf_tx,                      \
2809         .get_survey = mac80211_hwsim_get_survey,                \
2810         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2811         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2812         .flush = mac80211_hwsim_flush,                          \
2813         .get_tsf = mac80211_hwsim_get_tsf,                      \
2814         .set_tsf = mac80211_hwsim_set_tsf,                      \
2815         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2816         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2817         .get_et_strings = mac80211_hwsim_get_et_strings,
2818
2819 static const struct ieee80211_ops mac80211_hwsim_ops = {
2820         HWSIM_COMMON_OPS
2821         .sw_scan_start = mac80211_hwsim_sw_scan,
2822         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2823 };
2824
2825 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2826         HWSIM_COMMON_OPS
2827         .hw_scan = mac80211_hwsim_hw_scan,
2828         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2829         .sw_scan_start = NULL,
2830         .sw_scan_complete = NULL,
2831         .remain_on_channel = mac80211_hwsim_roc,
2832         .cancel_remain_on_channel = mac80211_hwsim_croc,
2833         .add_chanctx = mac80211_hwsim_add_chanctx,
2834         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2835         .change_chanctx = mac80211_hwsim_change_chanctx,
2836         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2837         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2838 };
2839
2840 struct hwsim_new_radio_params {
2841         unsigned int channels;
2842         const char *reg_alpha2;
2843         const struct ieee80211_regdomain *regd;
2844         bool reg_strict;
2845         bool p2p_device;
2846         bool use_chanctx;
2847         bool destroy_on_close;
2848         const char *hwname;
2849         bool no_vif;
2850         const u8 *perm_addr;
2851         u32 iftypes;
2852         u32 *ciphers;
2853         u8 n_ciphers;
2854 };
2855
2856 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2857                                    struct genl_info *info)
2858 {
2859         if (info)
2860                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2861                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2862         else
2863                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2864                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2865 }
2866
2867 static int append_radio_msg(struct sk_buff *skb, int id,
2868                             struct hwsim_new_radio_params *param)
2869 {
2870         int ret;
2871
2872         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2873         if (ret < 0)
2874                 return ret;
2875
2876         if (param->channels) {
2877                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2878                 if (ret < 0)
2879                         return ret;
2880         }
2881
2882         if (param->reg_alpha2) {
2883                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2884                               param->reg_alpha2);
2885                 if (ret < 0)
2886                         return ret;
2887         }
2888
2889         if (param->regd) {
2890                 int i;
2891
2892                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2893                         if (hwsim_world_regdom_custom[i] != param->regd)
2894                                 continue;
2895
2896                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2897                         if (ret < 0)
2898                                 return ret;
2899                         break;
2900                 }
2901         }
2902
2903         if (param->reg_strict) {
2904                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2905                 if (ret < 0)
2906                         return ret;
2907         }
2908
2909         if (param->p2p_device) {
2910                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2911                 if (ret < 0)
2912                         return ret;
2913         }
2914
2915         if (param->use_chanctx) {
2916                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2917                 if (ret < 0)
2918                         return ret;
2919         }
2920
2921         if (param->hwname) {
2922                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2923                               strlen(param->hwname), param->hwname);
2924                 if (ret < 0)
2925                         return ret;
2926         }
2927
2928         return 0;
2929 }
2930
2931 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2932                                   struct hwsim_new_radio_params *param)
2933 {
2934         struct sk_buff *mcast_skb;
2935         void *data;
2936
2937         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2938         if (!mcast_skb)
2939                 return;
2940
2941         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2942                            HWSIM_CMD_NEW_RADIO);
2943         if (!data)
2944                 goto out_err;
2945
2946         if (append_radio_msg(mcast_skb, id, param) < 0)
2947                 goto out_err;
2948
2949         genlmsg_end(mcast_skb, data);
2950
2951         hwsim_mcast_config_msg(mcast_skb, info);
2952         return;
2953
2954 out_err:
2955         nlmsg_free(mcast_skb);
2956 }
2957
2958 static const struct ieee80211_sband_iftype_data sband_capa_2ghz[] = {
2959         {
2960                 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2961                               BIT(NL80211_IFTYPE_AP),
2962                 .he_cap = {
2963                         .has_he = true,
2964                         .he_cap_elem = {
2965                                 .mac_cap_info[0] =
2966                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2967                                 .mac_cap_info[1] =
2968                                         IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2969                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2970                                 .mac_cap_info[2] =
2971                                         IEEE80211_HE_MAC_CAP2_BSR |
2972                                         IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2973                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2974                                 .mac_cap_info[3] =
2975                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2976                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
2977                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
2978                                 .phy_cap_info[1] =
2979                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2980                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2981                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2982                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2983                                 .phy_cap_info[2] =
2984                                         IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2985                                         IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2986                                         IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2987                                         IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2988                                         IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2989
2990                                 /* Leave all the other PHY capability bytes
2991                                  * unset, as DCM, beam forming, RU and PPE
2992                                  * threshold information are not supported
2993                                  */
2994                         },
2995                         .he_mcs_nss_supp = {
2996                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2997                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2998                                 .rx_mcs_160 = cpu_to_le16(0xffff),
2999                                 .tx_mcs_160 = cpu_to_le16(0xffff),
3000                                 .rx_mcs_80p80 = cpu_to_le16(0xffff),
3001                                 .tx_mcs_80p80 = cpu_to_le16(0xffff),
3002                         },
3003                 },
3004                 .eht_cap = {
3005                         .has_eht = true,
3006                         .eht_cap_elem = {
3007                                 .mac_cap_info[0] =
3008                                         IEEE80211_EHT_MAC_CAP0_NSEP_PRIO_ACCESS |
3009                                         IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
3010                                         IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
3011                                 .phy_cap_info[0] =
3012                                         IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
3013                                         IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
3014                                         IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
3015                                         IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
3016                                         IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE,
3017                                 .phy_cap_info[3] =
3018                                         IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
3019                                         IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
3020                                         IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
3021                                         IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
3022                                         IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
3023                                         IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
3024                                         IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
3025                                 .phy_cap_info[4] =
3026                                         IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
3027                                         IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
3028                                         IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
3029                                         IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
3030                                         IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
3031                                 .phy_cap_info[5] =
3032                                         IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
3033                                         IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
3034                                         IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
3035                                         IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
3036                                         IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
3037                                         IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
3038                                 .phy_cap_info[6] =
3039                                         IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
3040                                         IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
3041                                 .phy_cap_info[7] =
3042                                         IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW,
3043                         },
3044
3045                         /* For all MCS and bandwidth, set 8 NSS for both Tx and
3046                          * Rx
3047                          */
3048                         .eht_mcs_nss_supp = {
3049                                 /*
3050                                  * Since B0, B1, B2 and B3 are not set in
3051                                  * the supported channel width set field in the
3052                                  * HE PHY capabilities information field the
3053                                  * device is a 20MHz only device on 2.4GHz band.
3054                                  */
3055                                 .only_20mhz = {
3056                                         .rx_tx_mcs7_max_nss = 0x88,
3057                                         .rx_tx_mcs9_max_nss = 0x88,
3058                                         .rx_tx_mcs11_max_nss = 0x88,
3059                                         .rx_tx_mcs13_max_nss = 0x88,
3060                                 },
3061                         },
3062                         /* PPE threshold information is not supported */
3063                 },
3064         },
3065 #ifdef CONFIG_MAC80211_MESH
3066         {
3067                 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
3068                 .he_cap = {
3069                         .has_he = true,
3070                         .he_cap_elem = {
3071                                 .mac_cap_info[0] =
3072                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
3073                                 .mac_cap_info[1] =
3074                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3075                                 .mac_cap_info[2] =
3076                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
3077                                 .mac_cap_info[3] =
3078                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3079                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3080                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3081                                 .phy_cap_info[1] =
3082                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3083                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3084                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3085                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3086                                 .phy_cap_info[2] = 0,
3087
3088                                 /* Leave all the other PHY capability bytes
3089                                  * unset, as DCM, beam forming, RU and PPE
3090                                  * threshold information are not supported
3091                                  */
3092                         },
3093                         .he_mcs_nss_supp = {
3094                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
3095                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
3096                                 .rx_mcs_160 = cpu_to_le16(0xffff),
3097                                 .tx_mcs_160 = cpu_to_le16(0xffff),
3098                                 .rx_mcs_80p80 = cpu_to_le16(0xffff),
3099                                 .tx_mcs_80p80 = cpu_to_le16(0xffff),
3100                         },
3101                 },
3102         },
3103 #endif
3104 };
3105
3106 static const struct ieee80211_sband_iftype_data sband_capa_5ghz[] = {
3107         {
3108                 /* TODO: should we support other types, e.g., P2P?*/
3109                 .types_mask = BIT(NL80211_IFTYPE_STATION) |
3110                               BIT(NL80211_IFTYPE_AP),
3111                 .he_cap = {
3112                         .has_he = true,
3113                         .he_cap_elem = {
3114                                 .mac_cap_info[0] =
3115                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
3116                                 .mac_cap_info[1] =
3117                                         IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
3118                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3119                                 .mac_cap_info[2] =
3120                                         IEEE80211_HE_MAC_CAP2_BSR |
3121                                         IEEE80211_HE_MAC_CAP2_MU_CASCADING |
3122                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
3123                                 .mac_cap_info[3] =
3124                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3125                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3126                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3127                                 .phy_cap_info[0] =
3128                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3129                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
3130                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
3131                                 .phy_cap_info[1] =
3132                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3133                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3134                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3135                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3136                                 .phy_cap_info[2] =
3137                                         IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
3138                                         IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
3139                                         IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
3140                                         IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
3141                                         IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
3142
3143                                 /* Leave all the other PHY capability bytes
3144                                  * unset, as DCM, beam forming, RU and PPE
3145                                  * threshold information are not supported
3146                                  */
3147                         },
3148                         .he_mcs_nss_supp = {
3149                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
3150                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
3151                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
3152                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
3153                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
3154                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
3155                         },
3156                 },
3157                 .eht_cap = {
3158                         .has_eht = true,
3159                         .eht_cap_elem = {
3160                                 .mac_cap_info[0] =
3161                                         IEEE80211_EHT_MAC_CAP0_NSEP_PRIO_ACCESS |
3162                                         IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
3163                                         IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
3164                                 .phy_cap_info[0] =
3165                                         IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
3166                                         IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
3167                                         IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
3168                                         IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
3169                                         IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
3170                                         IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
3171                                 .phy_cap_info[1] =
3172                                         IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
3173                                         IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK,
3174                                 .phy_cap_info[2] =
3175                                         IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
3176                                         IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK,
3177                                 .phy_cap_info[3] =
3178                                         IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
3179                                         IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
3180                                         IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
3181                                         IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
3182                                         IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
3183                                         IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
3184                                         IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
3185                                 .phy_cap_info[4] =
3186                                         IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
3187                                         IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
3188                                         IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
3189                                         IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
3190                                         IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
3191                                 .phy_cap_info[5] =
3192                                         IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
3193                                         IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
3194                                         IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
3195                                         IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
3196                                         IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
3197                                         IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
3198                                 .phy_cap_info[6] =
3199                                         IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
3200                                         IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
3201                                 .phy_cap_info[7] =
3202                                         IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
3203                                         IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
3204                                         IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
3205                                         IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
3206                                         IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ,
3207                         },
3208
3209                         /* For all MCS and bandwidth, set 8 NSS for both Tx and
3210                          * Rx
3211                          */
3212                         .eht_mcs_nss_supp = {
3213                                 /*
3214                                  * As B1 and B2 are set in the supported
3215                                  * channel width set field in the HE PHY
3216                                  * capabilities information field include all
3217                                  * the following MCS/NSS.
3218                                  */
3219                                 .bw._80 = {
3220                                         .rx_tx_mcs9_max_nss = 0x88,
3221                                         .rx_tx_mcs11_max_nss = 0x88,
3222                                         .rx_tx_mcs13_max_nss = 0x88,
3223                                 },
3224                                 .bw._160 = {
3225                                         .rx_tx_mcs9_max_nss = 0x88,
3226                                         .rx_tx_mcs11_max_nss = 0x88,
3227                                         .rx_tx_mcs13_max_nss = 0x88,
3228                                 },
3229                         },
3230                         /* PPE threshold information is not supported */
3231                 },
3232         },
3233 #ifdef CONFIG_MAC80211_MESH
3234         {
3235                 /* TODO: should we support other types, e.g., IBSS?*/
3236                 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
3237                 .he_cap = {
3238                         .has_he = true,
3239                         .he_cap_elem = {
3240                                 .mac_cap_info[0] =
3241                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
3242                                 .mac_cap_info[1] =
3243                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3244                                 .mac_cap_info[2] =
3245                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
3246                                 .mac_cap_info[3] =
3247                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3248                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3249                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3250                                 .phy_cap_info[0] =
3251                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3252                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
3253                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
3254                                 .phy_cap_info[1] =
3255                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3256                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3257                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3258                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3259                                 .phy_cap_info[2] = 0,
3260
3261                                 /* Leave all the other PHY capability bytes
3262                                  * unset, as DCM, beam forming, RU and PPE
3263                                  * threshold information are not supported
3264                                  */
3265                         },
3266                         .he_mcs_nss_supp = {
3267                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
3268                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
3269                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
3270                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
3271                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
3272                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
3273                         },
3274                 },
3275         },
3276 #endif
3277 };
3278
3279 static const struct ieee80211_sband_iftype_data sband_capa_6ghz[] = {
3280         {
3281                 /* TODO: should we support other types, e.g., P2P?*/
3282                 .types_mask = BIT(NL80211_IFTYPE_STATION) |
3283                               BIT(NL80211_IFTYPE_AP),
3284                 .he_6ghz_capa = {
3285                         .capa = cpu_to_le16(IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START |
3286                                             IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP |
3287                                             IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN |
3288                                             IEEE80211_HE_6GHZ_CAP_SM_PS |
3289                                             IEEE80211_HE_6GHZ_CAP_RD_RESPONDER |
3290                                             IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
3291                                             IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS),
3292                 },
3293                 .he_cap = {
3294                         .has_he = true,
3295                         .he_cap_elem = {
3296                                 .mac_cap_info[0] =
3297                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
3298                                 .mac_cap_info[1] =
3299                                         IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
3300                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3301                                 .mac_cap_info[2] =
3302                                         IEEE80211_HE_MAC_CAP2_BSR |
3303                                         IEEE80211_HE_MAC_CAP2_MU_CASCADING |
3304                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
3305                                 .mac_cap_info[3] =
3306                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3307                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3308                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3309                                 .phy_cap_info[0] =
3310                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3311                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
3312                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
3313                                 .phy_cap_info[1] =
3314                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3315                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3316                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3317                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3318                                 .phy_cap_info[2] =
3319                                         IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
3320                                         IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
3321                                         IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
3322                                         IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
3323                                         IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
3324
3325                                 /* Leave all the other PHY capability bytes
3326                                  * unset, as DCM, beam forming, RU and PPE
3327                                  * threshold information are not supported
3328                                  */
3329                         },
3330                         .he_mcs_nss_supp = {
3331                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
3332                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
3333                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
3334                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
3335                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
3336                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
3337                         },
3338                 },
3339                 .eht_cap = {
3340                         .has_eht = true,
3341                         .eht_cap_elem = {
3342                                 .mac_cap_info[0] =
3343                                         IEEE80211_EHT_MAC_CAP0_NSEP_PRIO_ACCESS |
3344                                         IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
3345                                         IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
3346                                 .phy_cap_info[0] =
3347                                         IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ |
3348                                         IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
3349                                         IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
3350                                         IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
3351                                         IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
3352                                         IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
3353                                         IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
3354                                 .phy_cap_info[1] =
3355                                         IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
3356                                         IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK |
3357                                         IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK,
3358                                 .phy_cap_info[2] =
3359                                         IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
3360                                         IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK |
3361                                         IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK,
3362                                 .phy_cap_info[3] =
3363                                         IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
3364                                         IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
3365                                         IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
3366                                         IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
3367                                         IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
3368                                         IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
3369                                         IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
3370                                 .phy_cap_info[4] =
3371                                         IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
3372                                         IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
3373                                         IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
3374                                         IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
3375                                         IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
3376                                 .phy_cap_info[5] =
3377                                         IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
3378                                         IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
3379                                         IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
3380                                         IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
3381                                         IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
3382                                         IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
3383                                 .phy_cap_info[6] =
3384                                         IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
3385                                         IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK |
3386                                         IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP,
3387                                 .phy_cap_info[7] =
3388                                         IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
3389                                         IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
3390                                         IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
3391                                         IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ |
3392                                         IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
3393                                         IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
3394                                         IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ,
3395                         },
3396
3397                         /* For all MCS and bandwidth, set 8 NSS for both Tx and
3398                          * Rx
3399                          */
3400                         .eht_mcs_nss_supp = {
3401                                 /*
3402                                  * As B1 and B2 are set in the supported
3403                                  * channel width set field in the HE PHY
3404                                  * capabilities information field and 320MHz in
3405                                  * 6GHz is supported include all the following
3406                                  * MCS/NSS.
3407                                  */
3408                                 .bw._80 = {
3409                                         .rx_tx_mcs9_max_nss = 0x88,
3410                                         .rx_tx_mcs11_max_nss = 0x88,
3411                                         .rx_tx_mcs13_max_nss = 0x88,
3412                                 },
3413                                 .bw._160 = {
3414                                         .rx_tx_mcs9_max_nss = 0x88,
3415                                         .rx_tx_mcs11_max_nss = 0x88,
3416                                         .rx_tx_mcs13_max_nss = 0x88,
3417                                 },
3418                                 .bw._320 = {
3419                                         .rx_tx_mcs9_max_nss = 0x88,
3420                                         .rx_tx_mcs11_max_nss = 0x88,
3421                                         .rx_tx_mcs13_max_nss = 0x88,
3422                                 },
3423                         },
3424                         /* PPE threshold information is not supported */
3425                 },
3426         },
3427 #ifdef CONFIG_MAC80211_MESH
3428         {
3429                 /* TODO: should we support other types, e.g., IBSS?*/
3430                 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
3431                 .he_6ghz_capa = {
3432                         .capa = cpu_to_le16(IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START |
3433                                             IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP |
3434                                             IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN |
3435                                             IEEE80211_HE_6GHZ_CAP_SM_PS |
3436                                             IEEE80211_HE_6GHZ_CAP_RD_RESPONDER |
3437                                             IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
3438                                             IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS),
3439                 },
3440                 .he_cap = {
3441                         .has_he = true,
3442                         .he_cap_elem = {
3443                                 .mac_cap_info[0] =
3444                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
3445                                 .mac_cap_info[1] =
3446                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
3447                                 .mac_cap_info[2] =
3448                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
3449                                 .mac_cap_info[3] =
3450                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
3451                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
3452                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
3453                                 .phy_cap_info[0] =
3454                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
3455                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
3456                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
3457                                 .phy_cap_info[1] =
3458                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
3459                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
3460                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
3461                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
3462                                 .phy_cap_info[2] = 0,
3463
3464                                 /* Leave all the other PHY capability bytes
3465                                  * unset, as DCM, beam forming, RU and PPE
3466                                  * threshold information are not supported
3467                                  */
3468                         },
3469                         .he_mcs_nss_supp = {
3470                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
3471                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
3472                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
3473                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
3474                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
3475                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
3476                         },
3477                 },
3478         },
3479 #endif
3480 };
3481
3482 static void mac80211_hwsim_sband_capab(struct ieee80211_supported_band *sband)
3483 {
3484         u16 n_iftype_data;
3485
3486         if (sband->band == NL80211_BAND_2GHZ) {
3487                 n_iftype_data = ARRAY_SIZE(sband_capa_2ghz);
3488                 sband->iftype_data =
3489                         (struct ieee80211_sband_iftype_data *)sband_capa_2ghz;
3490         } else if (sband->band == NL80211_BAND_5GHZ) {
3491                 n_iftype_data = ARRAY_SIZE(sband_capa_5ghz);
3492                 sband->iftype_data =
3493                         (struct ieee80211_sband_iftype_data *)sband_capa_5ghz;
3494         } else if (sband->band == NL80211_BAND_6GHZ) {
3495                 n_iftype_data = ARRAY_SIZE(sband_capa_6ghz);
3496                 sband->iftype_data =
3497                         (struct ieee80211_sband_iftype_data *)sband_capa_6ghz;
3498         } else {
3499                 return;
3500         }
3501
3502         sband->n_iftype_data = n_iftype_data;
3503 }
3504
3505 #ifdef CONFIG_MAC80211_MESH
3506 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
3507 #else
3508 #define HWSIM_MESH_BIT 0
3509 #endif
3510
3511 #define HWSIM_DEFAULT_IF_LIMIT \
3512         (BIT(NL80211_IFTYPE_STATION) | \
3513          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
3514          BIT(NL80211_IFTYPE_AP) | \
3515          BIT(NL80211_IFTYPE_P2P_GO) | \
3516          HWSIM_MESH_BIT)
3517
3518 #define HWSIM_IFTYPE_SUPPORT_MASK \
3519         (BIT(NL80211_IFTYPE_STATION) | \
3520          BIT(NL80211_IFTYPE_AP) | \
3521          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
3522          BIT(NL80211_IFTYPE_P2P_GO) | \
3523          BIT(NL80211_IFTYPE_ADHOC) | \
3524          BIT(NL80211_IFTYPE_MESH_POINT) | \
3525          BIT(NL80211_IFTYPE_OCB))
3526
3527 static int mac80211_hwsim_new_radio(struct genl_info *info,
3528                                     struct hwsim_new_radio_params *param)
3529 {
3530         int err;
3531         u8 addr[ETH_ALEN];
3532         struct mac80211_hwsim_data *data;
3533         struct ieee80211_hw *hw;
3534         enum nl80211_band band;
3535         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
3536         struct net *net;
3537         int idx, i;
3538         int n_limits = 0;
3539
3540         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
3541                 return -EINVAL;
3542
3543         spin_lock_bh(&hwsim_radio_lock);
3544         idx = hwsim_radio_idx++;
3545         spin_unlock_bh(&hwsim_radio_lock);
3546
3547         if (param->use_chanctx)
3548                 ops = &mac80211_hwsim_mchan_ops;
3549         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
3550         if (!hw) {
3551                 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
3552                 err = -ENOMEM;
3553                 goto failed;
3554         }
3555
3556         /* ieee80211_alloc_hw_nm may have used a default name */
3557         param->hwname = wiphy_name(hw->wiphy);
3558
3559         if (info)
3560                 net = genl_info_net(info);
3561         else
3562                 net = &init_net;
3563         wiphy_net_set(hw->wiphy, net);
3564
3565         data = hw->priv;
3566         data->hw = hw;
3567
3568         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
3569         if (IS_ERR(data->dev)) {
3570                 printk(KERN_DEBUG
3571                        "mac80211_hwsim: device_create failed (%ld)\n",
3572                        PTR_ERR(data->dev));
3573                 err = -ENOMEM;
3574                 goto failed_drvdata;
3575         }
3576         data->dev->driver = &mac80211_hwsim_driver.driver;
3577         err = device_bind_driver(data->dev);
3578         if (err != 0) {
3579                 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
3580                        err);
3581                 goto failed_bind;
3582         }
3583
3584         skb_queue_head_init(&data->pending);
3585
3586         SET_IEEE80211_DEV(hw, data->dev);
3587         if (!param->perm_addr) {
3588                 eth_zero_addr(addr);
3589                 addr[0] = 0x02;
3590                 addr[3] = idx >> 8;
3591                 addr[4] = idx;
3592                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
3593                 /* Why need here second address ? */
3594                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
3595                 data->addresses[1].addr[0] |= 0x40;
3596                 hw->wiphy->n_addresses = 2;
3597                 hw->wiphy->addresses = data->addresses;
3598                 /* possible address clash is checked at hash table insertion */
3599         } else {
3600                 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
3601                 /* compatibility with automatically generated mac addr */
3602                 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
3603                 hw->wiphy->n_addresses = 2;
3604                 hw->wiphy->addresses = data->addresses;
3605         }
3606
3607         data->channels = param->channels;
3608         data->use_chanctx = param->use_chanctx;
3609         data->idx = idx;
3610         data->destroy_on_close = param->destroy_on_close;
3611         if (info)
3612                 data->portid = info->snd_portid;
3613
3614         /* setup interface limits, only on interface types we support */
3615         if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
3616                 data->if_limits[n_limits].max = 1;
3617                 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
3618                 n_limits++;
3619         }
3620
3621         if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
3622                 data->if_limits[n_limits].max = 2048;
3623                 /*
3624                  * For this case, we may only support a subset of
3625                  * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
3626                  * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
3627                  */
3628                 data->if_limits[n_limits].types =
3629                                         HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
3630                 n_limits++;
3631         }
3632
3633         if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3634                 data->if_limits[n_limits].max = 1;
3635                 data->if_limits[n_limits].types =
3636                                                 BIT(NL80211_IFTYPE_P2P_DEVICE);
3637                 n_limits++;
3638         }
3639
3640         if (data->use_chanctx) {
3641                 hw->wiphy->max_scan_ssids = 255;
3642                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
3643                 hw->wiphy->max_remain_on_channel_duration = 1000;
3644                 data->if_combination.radar_detect_widths = 0;
3645                 data->if_combination.num_different_channels = data->channels;
3646                 data->chanctx = NULL;
3647         } else {
3648                 data->if_combination.num_different_channels = 1;
3649                 data->if_combination.radar_detect_widths =
3650                                         BIT(NL80211_CHAN_WIDTH_5) |
3651                                         BIT(NL80211_CHAN_WIDTH_10) |
3652                                         BIT(NL80211_CHAN_WIDTH_20_NOHT) |
3653                                         BIT(NL80211_CHAN_WIDTH_20) |
3654                                         BIT(NL80211_CHAN_WIDTH_40) |
3655                                         BIT(NL80211_CHAN_WIDTH_80) |
3656                                         BIT(NL80211_CHAN_WIDTH_160);
3657         }
3658
3659         if (!n_limits) {
3660                 err = -EINVAL;
3661                 goto failed_hw;
3662         }
3663
3664         data->if_combination.max_interfaces = 0;
3665         for (i = 0; i < n_limits; i++)
3666                 data->if_combination.max_interfaces +=
3667                         data->if_limits[i].max;
3668
3669         data->if_combination.n_limits = n_limits;
3670         data->if_combination.limits = data->if_limits;
3671
3672         /*
3673          * If we actually were asked to support combinations,
3674          * advertise them - if there's only a single thing like
3675          * only IBSS then don't advertise it as combinations.
3676          */
3677         if (data->if_combination.max_interfaces > 1) {
3678                 hw->wiphy->iface_combinations = &data->if_combination;
3679                 hw->wiphy->n_iface_combinations = 1;
3680         }
3681
3682         if (param->ciphers) {
3683                 memcpy(data->ciphers, param->ciphers,
3684                        param->n_ciphers * sizeof(u32));
3685                 hw->wiphy->cipher_suites = data->ciphers;
3686                 hw->wiphy->n_cipher_suites = param->n_ciphers;
3687         }
3688
3689         data->rx_rssi = DEFAULT_RX_RSSI;
3690
3691         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
3692         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
3693         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
3694
3695         hw->queues = 5;
3696         hw->offchannel_tx_hw_queue = 4;
3697
3698         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
3699         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
3700         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
3701         ieee80211_hw_set(hw, QUEUE_CONTROL);
3702         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
3703         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
3704         ieee80211_hw_set(hw, MFP_CAPABLE);
3705         ieee80211_hw_set(hw, SIGNAL_DBM);
3706         ieee80211_hw_set(hw, SUPPORTS_PS);
3707         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
3708         ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
3709         ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
3710         ieee80211_hw_set(hw, TDLS_WIDER_BW);
3711         if (rctbl)
3712                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
3713         ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
3714
3715         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3716         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
3717                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3718                             WIPHY_FLAG_AP_UAPSD |
3719                             WIPHY_FLAG_SUPPORTS_5_10_MHZ |
3720                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
3721         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
3722                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
3723                                NL80211_FEATURE_STATIC_SMPS |
3724                                NL80211_FEATURE_DYNAMIC_SMPS |
3725                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
3726         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
3727         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
3728         wiphy_ext_feature_set(hw->wiphy,
3729                               NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
3730         wiphy_ext_feature_set(hw->wiphy,
3731                               NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
3732
3733         hw->wiphy->interface_modes = param->iftypes;
3734
3735         /* ask mac80211 to reserve space for magic */
3736         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
3737         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
3738         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
3739
3740         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
3741                 sizeof(hwsim_channels_2ghz));
3742         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
3743                 sizeof(hwsim_channels_5ghz));
3744         memcpy(data->channels_6ghz, hwsim_channels_6ghz,
3745                 sizeof(hwsim_channels_6ghz));
3746         memcpy(data->channels_s1g, hwsim_channels_s1g,
3747                sizeof(hwsim_channels_s1g));
3748         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
3749
3750         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3751                 struct ieee80211_supported_band *sband = &data->bands[band];
3752
3753                 sband->band = band;
3754
3755                 switch (band) {
3756                 case NL80211_BAND_2GHZ:
3757                         sband->channels = data->channels_2ghz;
3758                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
3759                         sband->bitrates = data->rates;
3760                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
3761                         break;
3762                 case NL80211_BAND_5GHZ:
3763                         sband->channels = data->channels_5ghz;
3764                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
3765                         sband->bitrates = data->rates + 4;
3766                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3767
3768                         sband->vht_cap.vht_supported = true;
3769                         sband->vht_cap.cap =
3770                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
3771                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
3772                                 IEEE80211_VHT_CAP_RXLDPC |
3773                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
3774                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
3775                                 IEEE80211_VHT_CAP_TXSTBC |
3776                                 IEEE80211_VHT_CAP_RXSTBC_4 |
3777                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
3778                         sband->vht_cap.vht_mcs.rx_mcs_map =
3779                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
3780                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
3781                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
3782                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
3783                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
3784                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
3785                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
3786                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
3787                         sband->vht_cap.vht_mcs.tx_mcs_map =
3788                                 sband->vht_cap.vht_mcs.rx_mcs_map;
3789                         break;
3790                 case NL80211_BAND_6GHZ:
3791                         sband->channels = data->channels_6ghz;
3792                         sband->n_channels = ARRAY_SIZE(hwsim_channels_6ghz);
3793                         sband->bitrates = data->rates + 4;
3794                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3795                         break;
3796                 case NL80211_BAND_S1GHZ:
3797                         memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
3798                                sizeof(sband->s1g_cap));
3799                         sband->channels = data->channels_s1g;
3800                         sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
3801                         break;
3802                 default:
3803                         continue;
3804                 }
3805
3806                 if (band != NL80211_BAND_6GHZ){
3807                         sband->ht_cap.ht_supported = true;
3808                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
3809                                             IEEE80211_HT_CAP_GRN_FLD |
3810                                             IEEE80211_HT_CAP_SGI_20 |
3811                                             IEEE80211_HT_CAP_SGI_40 |
3812                                             IEEE80211_HT_CAP_DSSSCCK40;
3813                         sband->ht_cap.ampdu_factor = 0x3;
3814                         sband->ht_cap.ampdu_density = 0x6;
3815                         memset(&sband->ht_cap.mcs, 0,
3816                                sizeof(sband->ht_cap.mcs));
3817                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
3818                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
3819                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3820                 }
3821
3822                 mac80211_hwsim_sband_capab(sband);
3823
3824                 hw->wiphy->bands[band] = sband;
3825         }
3826
3827         /* By default all radios belong to the first group */
3828         data->group = 1;
3829         mutex_init(&data->mutex);
3830
3831         data->netgroup = hwsim_net_get_netgroup(net);
3832         data->wmediumd = hwsim_net_get_wmediumd(net);
3833
3834         /* Enable frame retransmissions for lossy channels */
3835         hw->max_rates = 4;
3836         hw->max_rate_tries = 11;
3837
3838         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3839         hw->wiphy->n_vendor_commands =
3840                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3841         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3842         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3843
3844         if (param->reg_strict)
3845                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3846         if (param->regd) {
3847                 data->regd = param->regd;
3848                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3849                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3850                 /* give the regulatory workqueue a chance to run */
3851                 schedule_timeout_interruptible(1);
3852         }
3853
3854         if (param->no_vif)
3855                 ieee80211_hw_set(hw, NO_AUTO_VIF);
3856
3857         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3858
3859         hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3860                      HRTIMER_MODE_ABS_SOFT);
3861         data->beacon_timer.function = mac80211_hwsim_beacon;
3862
3863         err = ieee80211_register_hw(hw);
3864         if (err < 0) {
3865                 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3866                        err);
3867                 goto failed_hw;
3868         }
3869
3870         wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3871
3872         if (param->reg_alpha2) {
3873                 data->alpha2[0] = param->reg_alpha2[0];
3874                 data->alpha2[1] = param->reg_alpha2[1];
3875                 regulatory_hint(hw->wiphy, param->reg_alpha2);
3876         }
3877
3878         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3879         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3880         debugfs_create_file("group", 0666, data->debugfs, data,
3881                             &hwsim_fops_group);
3882         debugfs_create_file("rx_rssi", 0666, data->debugfs, data,
3883                             &hwsim_fops_rx_rssi);
3884         if (!data->use_chanctx)
3885                 debugfs_create_file("dfs_simulate_radar", 0222,
3886                                     data->debugfs,
3887                                     data, &hwsim_simulate_radar);
3888
3889         spin_lock_bh(&hwsim_radio_lock);
3890         err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3891                                      hwsim_rht_params);
3892         if (err < 0) {
3893                 if (info) {
3894                         GENL_SET_ERR_MSG(info, "perm addr already present");
3895                         NL_SET_BAD_ATTR(info->extack,
3896                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
3897                 }
3898                 spin_unlock_bh(&hwsim_radio_lock);
3899                 goto failed_final_insert;
3900         }
3901
3902         list_add_tail(&data->list, &hwsim_radios);
3903         hwsim_radios_generation++;
3904         spin_unlock_bh(&hwsim_radio_lock);
3905
3906         hwsim_mcast_new_radio(idx, info, param);
3907
3908         return idx;
3909
3910 failed_final_insert:
3911         debugfs_remove_recursive(data->debugfs);
3912         ieee80211_unregister_hw(data->hw);
3913 failed_hw:
3914         device_release_driver(data->dev);
3915 failed_bind:
3916         device_unregister(data->dev);
3917 failed_drvdata:
3918         ieee80211_free_hw(hw);
3919 failed:
3920         return err;
3921 }
3922
3923 static void hwsim_mcast_del_radio(int id, const char *hwname,
3924                                   struct genl_info *info)
3925 {
3926         struct sk_buff *skb;
3927         void *data;
3928         int ret;
3929
3930         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3931         if (!skb)
3932                 return;
3933
3934         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3935                            HWSIM_CMD_DEL_RADIO);
3936         if (!data)
3937                 goto error;
3938
3939         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3940         if (ret < 0)
3941                 goto error;
3942
3943         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3944                       hwname);
3945         if (ret < 0)
3946                 goto error;
3947
3948         genlmsg_end(skb, data);
3949
3950         hwsim_mcast_config_msg(skb, info);
3951
3952         return;
3953
3954 error:
3955         nlmsg_free(skb);
3956 }
3957
3958 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3959                                      const char *hwname,
3960                                      struct genl_info *info)
3961 {
3962         hwsim_mcast_del_radio(data->idx, hwname, info);
3963         debugfs_remove_recursive(data->debugfs);
3964         ieee80211_unregister_hw(data->hw);
3965         device_release_driver(data->dev);
3966         device_unregister(data->dev);
3967         ieee80211_free_hw(data->hw);
3968 }
3969
3970 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3971                                     struct mac80211_hwsim_data *data,
3972                                     u32 portid, u32 seq,
3973                                     struct netlink_callback *cb, int flags)
3974 {
3975         void *hdr;
3976         struct hwsim_new_radio_params param = { };
3977         int res = -EMSGSIZE;
3978
3979         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3980                           HWSIM_CMD_GET_RADIO);
3981         if (!hdr)
3982                 return -EMSGSIZE;
3983
3984         if (cb)
3985                 genl_dump_check_consistent(cb, hdr);
3986
3987         if (data->alpha2[0] && data->alpha2[1])
3988                 param.reg_alpha2 = data->alpha2;
3989
3990         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3991                                         REGULATORY_STRICT_REG);
3992         param.p2p_device = !!(data->hw->wiphy->interface_modes &
3993                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
3994         param.use_chanctx = data->use_chanctx;
3995         param.regd = data->regd;
3996         param.channels = data->channels;
3997         param.hwname = wiphy_name(data->hw->wiphy);
3998
3999         res = append_radio_msg(skb, data->idx, &param);
4000         if (res < 0)
4001                 goto out_err;
4002
4003         genlmsg_end(skb, hdr);
4004         return 0;
4005
4006 out_err:
4007         genlmsg_cancel(skb, hdr);
4008         return res;
4009 }
4010
4011 static void mac80211_hwsim_free(void)
4012 {
4013         struct mac80211_hwsim_data *data;
4014
4015         spin_lock_bh(&hwsim_radio_lock);
4016         while ((data = list_first_entry_or_null(&hwsim_radios,
4017                                                 struct mac80211_hwsim_data,
4018                                                 list))) {
4019                 list_del(&data->list);
4020                 spin_unlock_bh(&hwsim_radio_lock);
4021                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
4022                                          NULL);
4023                 spin_lock_bh(&hwsim_radio_lock);
4024         }
4025         spin_unlock_bh(&hwsim_radio_lock);
4026         class_destroy(hwsim_class);
4027 }
4028
4029 static const struct net_device_ops hwsim_netdev_ops = {
4030         .ndo_start_xmit         = hwsim_mon_xmit,
4031         .ndo_set_mac_address    = eth_mac_addr,
4032         .ndo_validate_addr      = eth_validate_addr,
4033 };
4034
4035 static void hwsim_mon_setup(struct net_device *dev)
4036 {
4037         u8 addr[ETH_ALEN];
4038
4039         dev->netdev_ops = &hwsim_netdev_ops;
4040         dev->needs_free_netdev = true;
4041         ether_setup(dev);
4042         dev->priv_flags |= IFF_NO_QUEUE;
4043         dev->type = ARPHRD_IEEE80211_RADIOTAP;
4044         eth_zero_addr(addr);
4045         addr[0] = 0x12;
4046         eth_hw_addr_set(dev, addr);
4047 }
4048
4049 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
4050 {
4051         return rhashtable_lookup_fast(&hwsim_radios_rht,
4052                                       addr,
4053                                       hwsim_rht_params);
4054 }
4055
4056 static void hwsim_register_wmediumd(struct net *net, u32 portid)
4057 {
4058         struct mac80211_hwsim_data *data;
4059
4060         hwsim_net_set_wmediumd(net, portid);
4061
4062         spin_lock_bh(&hwsim_radio_lock);
4063         list_for_each_entry(data, &hwsim_radios, list) {
4064                 if (data->netgroup == hwsim_net_get_netgroup(net))
4065                         data->wmediumd = portid;
4066         }
4067         spin_unlock_bh(&hwsim_radio_lock);
4068 }
4069
4070 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
4071                                            struct genl_info *info)
4072 {
4073
4074         struct ieee80211_hdr *hdr;
4075         struct mac80211_hwsim_data *data2;
4076         struct ieee80211_tx_info *txi;
4077         struct hwsim_tx_rate *tx_attempts;
4078         u64 ret_skb_cookie;
4079         struct sk_buff *skb, *tmp;
4080         const u8 *src;
4081         unsigned int hwsim_flags;
4082         int i;
4083         bool found = false;
4084
4085         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
4086             !info->attrs[HWSIM_ATTR_FLAGS] ||
4087             !info->attrs[HWSIM_ATTR_COOKIE] ||
4088             !info->attrs[HWSIM_ATTR_SIGNAL] ||
4089             !info->attrs[HWSIM_ATTR_TX_INFO])
4090                 goto out;
4091
4092         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
4093         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
4094         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
4095
4096         data2 = get_hwsim_data_ref_from_addr(src);
4097         if (!data2)
4098                 goto out;
4099
4100         if (!hwsim_virtio_enabled) {
4101                 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
4102                     data2->netgroup)
4103                         goto out;
4104
4105                 if (info->snd_portid != data2->wmediumd)
4106                         goto out;
4107         }
4108
4109         /* look for the skb matching the cookie passed back from user */
4110         skb_queue_walk_safe(&data2->pending, skb, tmp) {
4111                 u64 skb_cookie;
4112
4113                 txi = IEEE80211_SKB_CB(skb);
4114                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
4115
4116                 if (skb_cookie == ret_skb_cookie) {
4117                         skb_unlink(skb, &data2->pending);
4118                         found = true;
4119                         break;
4120                 }
4121         }
4122
4123         /* not found */
4124         if (!found)
4125                 goto out;
4126
4127         /* Tx info received because the frame was broadcasted on user space,
4128          so we get all the necessary info: tx attempts and skb control buff */
4129
4130         tx_attempts = (struct hwsim_tx_rate *)nla_data(
4131                        info->attrs[HWSIM_ATTR_TX_INFO]);
4132
4133         /* now send back TX status */
4134         txi = IEEE80211_SKB_CB(skb);
4135
4136         ieee80211_tx_info_clear_status(txi);
4137
4138         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
4139                 txi->status.rates[i].idx = tx_attempts[i].idx;
4140                 txi->status.rates[i].count = tx_attempts[i].count;
4141         }
4142
4143         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
4144
4145         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
4146            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
4147                 if (skb->len >= 16) {
4148                         hdr = (struct ieee80211_hdr *) skb->data;
4149                         mac80211_hwsim_monitor_ack(data2->channel,
4150                                                    hdr->addr2);
4151                 }
4152                 txi->flags |= IEEE80211_TX_STAT_ACK;
4153         }
4154
4155         if (hwsim_flags & HWSIM_TX_CTL_NO_ACK)
4156                 txi->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
4157
4158         ieee80211_tx_status_irqsafe(data2->hw, skb);
4159         return 0;
4160 out:
4161         return -EINVAL;
4162
4163 }
4164
4165 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
4166                                           struct genl_info *info)
4167 {
4168         struct mac80211_hwsim_data *data2;
4169         struct ieee80211_rx_status rx_status;
4170         struct ieee80211_hdr *hdr;
4171         const u8 *dst;
4172         int frame_data_len;
4173         void *frame_data;
4174         struct sk_buff *skb = NULL;
4175         struct ieee80211_channel *channel = NULL;
4176
4177         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
4178             !info->attrs[HWSIM_ATTR_FRAME] ||
4179             !info->attrs[HWSIM_ATTR_RX_RATE] ||
4180             !info->attrs[HWSIM_ATTR_SIGNAL])
4181                 goto out;
4182
4183         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
4184         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
4185         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
4186
4187         /* Allocate new skb here */
4188         skb = alloc_skb(frame_data_len, GFP_KERNEL);
4189         if (skb == NULL)
4190                 goto err;
4191
4192         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
4193                 goto err;
4194
4195         /* Copy the data */
4196         skb_put_data(skb, frame_data, frame_data_len);
4197
4198         data2 = get_hwsim_data_ref_from_addr(dst);
4199         if (!data2)
4200                 goto out;
4201
4202         if (data2->use_chanctx) {
4203                 if (data2->tmp_chan)
4204                         channel = data2->tmp_chan;
4205                 else if (data2->chanctx)
4206                         channel = data2->chanctx->def.chan;
4207         } else {
4208                 channel = data2->channel;
4209         }
4210         if (!channel)
4211                 goto out;
4212
4213         if (!hwsim_virtio_enabled) {
4214                 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
4215                     data2->netgroup)
4216                         goto out;
4217
4218                 if (info->snd_portid != data2->wmediumd)
4219                         goto out;
4220         }
4221
4222         /* check if radio is configured properly */
4223
4224         if ((data2->idle && !data2->tmp_chan) || !data2->started)
4225                 goto out;
4226
4227         /* A frame is received from user space */
4228         memset(&rx_status, 0, sizeof(rx_status));
4229         if (info->attrs[HWSIM_ATTR_FREQ]) {
4230                 /* throw away off-channel packets, but allow both the temporary
4231                  * ("hw" scan/remain-on-channel) and regular channel, since the
4232                  * internal datapath also allows this
4233                  */
4234                 mutex_lock(&data2->mutex);
4235                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
4236
4237                 if (rx_status.freq != channel->center_freq) {
4238                         mutex_unlock(&data2->mutex);
4239                         goto out;
4240                 }
4241                 mutex_unlock(&data2->mutex);
4242         } else {
4243                 rx_status.freq = channel->center_freq;
4244         }
4245
4246         rx_status.band = channel->band;
4247         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
4248         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
4249
4250         hdr = (void *)skb->data;
4251
4252         if (ieee80211_is_beacon(hdr->frame_control) ||
4253             ieee80211_is_probe_resp(hdr->frame_control))
4254                 rx_status.boottime_ns = ktime_get_boottime_ns();
4255
4256         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
4257         data2->rx_pkts++;
4258         data2->rx_bytes += skb->len;
4259         ieee80211_rx_irqsafe(data2->hw, skb);
4260
4261         return 0;
4262 err:
4263         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4264 out:
4265         dev_kfree_skb(skb);
4266         return -EINVAL;
4267 }
4268
4269 static int hwsim_register_received_nl(struct sk_buff *skb_2,
4270                                       struct genl_info *info)
4271 {
4272         struct net *net = genl_info_net(info);
4273         struct mac80211_hwsim_data *data;
4274         int chans = 1;
4275
4276         spin_lock_bh(&hwsim_radio_lock);
4277         list_for_each_entry(data, &hwsim_radios, list)
4278                 chans = max(chans, data->channels);
4279         spin_unlock_bh(&hwsim_radio_lock);
4280
4281         /* In the future we should revise the userspace API and allow it
4282          * to set a flag that it does support multi-channel, then we can
4283          * let this pass conditionally on the flag.
4284          * For current userspace, prohibit it since it won't work right.
4285          */
4286         if (chans > 1)
4287                 return -EOPNOTSUPP;
4288
4289         if (hwsim_net_get_wmediumd(net))
4290                 return -EBUSY;
4291
4292         hwsim_register_wmediumd(net, info->snd_portid);
4293
4294         pr_debug("mac80211_hwsim: received a REGISTER, "
4295                "switching to wmediumd mode with pid %d\n", info->snd_portid);
4296
4297         return 0;
4298 }
4299
4300 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
4301 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
4302 {
4303         int i;
4304
4305         for (i = 0; i < n_ciphers; i++) {
4306                 int j;
4307                 int found = 0;
4308
4309                 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
4310                         if (ciphers[i] == hwsim_ciphers[j]) {
4311                                 found = 1;
4312                                 break;
4313                         }
4314                 }
4315
4316                 if (!found)
4317                         return false;
4318         }
4319
4320         return true;
4321 }
4322
4323 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
4324 {
4325         struct hwsim_new_radio_params param = { 0 };
4326         const char *hwname = NULL;
4327         int ret;
4328
4329         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
4330         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
4331         param.channels = channels;
4332         param.destroy_on_close =
4333                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
4334
4335         if (info->attrs[HWSIM_ATTR_CHANNELS])
4336                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
4337
4338         if (param.channels < 1) {
4339                 GENL_SET_ERR_MSG(info, "must have at least one channel");
4340                 return -EINVAL;
4341         }
4342
4343         if (info->attrs[HWSIM_ATTR_NO_VIF])
4344                 param.no_vif = true;
4345
4346         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
4347                 param.use_chanctx = true;
4348         else
4349                 param.use_chanctx = (param.channels > 1);
4350
4351         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
4352                 param.reg_alpha2 =
4353                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
4354
4355         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
4356                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
4357
4358                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
4359                         return -EINVAL;
4360
4361                 idx = array_index_nospec(idx,
4362                                          ARRAY_SIZE(hwsim_world_regdom_custom));
4363                 param.regd = hwsim_world_regdom_custom[idx];
4364         }
4365
4366         if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
4367                 if (!is_valid_ether_addr(
4368                                 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
4369                         GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
4370                         NL_SET_BAD_ATTR(info->extack,
4371                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
4372                         return -EINVAL;
4373                 }
4374
4375                 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
4376         }
4377
4378         if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
4379                 param.iftypes =
4380                         nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
4381
4382                 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
4383                         NL_SET_ERR_MSG_ATTR(info->extack,
4384                                             info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
4385                                             "cannot support more iftypes than kernel");
4386                         return -EINVAL;
4387                 }
4388         } else {
4389                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4390         }
4391
4392         /* ensure both flag and iftype support is honored */
4393         if (param.p2p_device ||
4394             param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
4395                 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4396                 param.p2p_device = true;
4397         }
4398
4399         if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
4400                 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
4401
4402                 param.ciphers =
4403                         nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
4404
4405                 if (len % sizeof(u32)) {
4406                         NL_SET_ERR_MSG_ATTR(info->extack,
4407                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
4408                                             "bad cipher list length");
4409                         return -EINVAL;
4410                 }
4411
4412                 param.n_ciphers = len / sizeof(u32);
4413
4414                 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
4415                         NL_SET_ERR_MSG_ATTR(info->extack,
4416                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
4417                                             "too many ciphers specified");
4418                         return -EINVAL;
4419                 }
4420
4421                 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
4422                         NL_SET_ERR_MSG_ATTR(info->extack,
4423                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
4424                                             "unsupported ciphers specified");
4425                         return -EINVAL;
4426                 }
4427         }
4428
4429         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
4430                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
4431                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
4432                                   GFP_KERNEL);
4433                 if (!hwname)
4434                         return -ENOMEM;
4435                 param.hwname = hwname;
4436         }
4437
4438         ret = mac80211_hwsim_new_radio(info, &param);
4439         kfree(hwname);
4440         return ret;
4441 }
4442
4443 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
4444 {
4445         struct mac80211_hwsim_data *data;
4446         s64 idx = -1;
4447         const char *hwname = NULL;
4448
4449         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
4450                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
4451         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
4452                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
4453                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
4454                                   GFP_KERNEL);
4455                 if (!hwname)
4456                         return -ENOMEM;
4457         } else
4458                 return -EINVAL;
4459
4460         spin_lock_bh(&hwsim_radio_lock);
4461         list_for_each_entry(data, &hwsim_radios, list) {
4462                 if (idx >= 0) {
4463                         if (data->idx != idx)
4464                                 continue;
4465                 } else {
4466                         if (!hwname ||
4467                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
4468                                 continue;
4469                 }
4470
4471                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
4472                         continue;
4473
4474                 list_del(&data->list);
4475                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4476                                        hwsim_rht_params);
4477                 hwsim_radios_generation++;
4478                 spin_unlock_bh(&hwsim_radio_lock);
4479                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
4480                                          info);
4481                 kfree(hwname);
4482                 return 0;
4483         }
4484         spin_unlock_bh(&hwsim_radio_lock);
4485
4486         kfree(hwname);
4487         return -ENODEV;
4488 }
4489
4490 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
4491 {
4492         struct mac80211_hwsim_data *data;
4493         struct sk_buff *skb;
4494         int idx, res = -ENODEV;
4495
4496         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
4497                 return -EINVAL;
4498         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
4499
4500         spin_lock_bh(&hwsim_radio_lock);
4501         list_for_each_entry(data, &hwsim_radios, list) {
4502                 if (data->idx != idx)
4503                         continue;
4504
4505                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
4506                         continue;
4507
4508                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
4509                 if (!skb) {
4510                         res = -ENOMEM;
4511                         goto out_err;
4512                 }
4513
4514                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
4515                                                info->snd_seq, NULL, 0);
4516                 if (res < 0) {
4517                         nlmsg_free(skb);
4518                         goto out_err;
4519                 }
4520
4521                 res = genlmsg_reply(skb, info);
4522                 break;
4523         }
4524
4525 out_err:
4526         spin_unlock_bh(&hwsim_radio_lock);
4527
4528         return res;
4529 }
4530
4531 static int hwsim_dump_radio_nl(struct sk_buff *skb,
4532                                struct netlink_callback *cb)
4533 {
4534         int last_idx = cb->args[0] - 1;
4535         struct mac80211_hwsim_data *data = NULL;
4536         int res = 0;
4537         void *hdr;
4538
4539         spin_lock_bh(&hwsim_radio_lock);
4540         cb->seq = hwsim_radios_generation;
4541
4542         if (last_idx >= hwsim_radio_idx-1)
4543                 goto done;
4544
4545         list_for_each_entry(data, &hwsim_radios, list) {
4546                 if (data->idx <= last_idx)
4547                         continue;
4548
4549                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
4550                         continue;
4551
4552                 res = mac80211_hwsim_get_radio(skb, data,
4553                                                NETLINK_CB(cb->skb).portid,
4554                                                cb->nlh->nlmsg_seq, cb,
4555                                                NLM_F_MULTI);
4556                 if (res < 0)
4557                         break;
4558
4559                 last_idx = data->idx;
4560         }
4561
4562         cb->args[0] = last_idx + 1;
4563
4564         /* list changed, but no new element sent, set interrupted flag */
4565         if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
4566                 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
4567                                   cb->nlh->nlmsg_seq, &hwsim_genl_family,
4568                                   NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
4569                 if (hdr) {
4570                         genl_dump_check_consistent(cb, hdr);
4571                         genlmsg_end(skb, hdr);
4572                 } else {
4573                         res = -EMSGSIZE;
4574                 }
4575         }
4576
4577 done:
4578         spin_unlock_bh(&hwsim_radio_lock);
4579         return res ?: skb->len;
4580 }
4581
4582 /* Generic Netlink operations array */
4583 static const struct genl_small_ops hwsim_ops[] = {
4584         {
4585                 .cmd = HWSIM_CMD_REGISTER,
4586                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4587                 .doit = hwsim_register_received_nl,
4588                 .flags = GENL_UNS_ADMIN_PERM,
4589         },
4590         {
4591                 .cmd = HWSIM_CMD_FRAME,
4592                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4593                 .doit = hwsim_cloned_frame_received_nl,
4594         },
4595         {
4596                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
4597                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4598                 .doit = hwsim_tx_info_frame_received_nl,
4599         },
4600         {
4601                 .cmd = HWSIM_CMD_NEW_RADIO,
4602                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4603                 .doit = hwsim_new_radio_nl,
4604                 .flags = GENL_UNS_ADMIN_PERM,
4605         },
4606         {
4607                 .cmd = HWSIM_CMD_DEL_RADIO,
4608                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4609                 .doit = hwsim_del_radio_nl,
4610                 .flags = GENL_UNS_ADMIN_PERM,
4611         },
4612         {
4613                 .cmd = HWSIM_CMD_GET_RADIO,
4614                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4615                 .doit = hwsim_get_radio_nl,
4616                 .dumpit = hwsim_dump_radio_nl,
4617         },
4618 };
4619
4620 static struct genl_family hwsim_genl_family __ro_after_init = {
4621         .name = "MAC80211_HWSIM",
4622         .version = 1,
4623         .maxattr = HWSIM_ATTR_MAX,
4624         .policy = hwsim_genl_policy,
4625         .netnsok = true,
4626         .module = THIS_MODULE,
4627         .small_ops = hwsim_ops,
4628         .n_small_ops = ARRAY_SIZE(hwsim_ops),
4629         .mcgrps = hwsim_mcgrps,
4630         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
4631 };
4632
4633 static void remove_user_radios(u32 portid)
4634 {
4635         struct mac80211_hwsim_data *entry, *tmp;
4636         LIST_HEAD(list);
4637
4638         spin_lock_bh(&hwsim_radio_lock);
4639         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
4640                 if (entry->destroy_on_close && entry->portid == portid) {
4641                         list_move(&entry->list, &list);
4642                         rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
4643                                                hwsim_rht_params);
4644                         hwsim_radios_generation++;
4645                 }
4646         }
4647         spin_unlock_bh(&hwsim_radio_lock);
4648
4649         list_for_each_entry_safe(entry, tmp, &list, list) {
4650                 list_del(&entry->list);
4651                 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
4652                                          NULL);
4653         }
4654 }
4655
4656 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
4657                                          unsigned long state,
4658                                          void *_notify)
4659 {
4660         struct netlink_notify *notify = _notify;
4661
4662         if (state != NETLINK_URELEASE)
4663                 return NOTIFY_DONE;
4664
4665         remove_user_radios(notify->portid);
4666
4667         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
4668                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
4669                        " socket, switching to perfect channel medium\n");
4670                 hwsim_register_wmediumd(notify->net, 0);
4671         }
4672         return NOTIFY_DONE;
4673
4674 }
4675
4676 static struct notifier_block hwsim_netlink_notifier = {
4677         .notifier_call = mac80211_hwsim_netlink_notify,
4678 };
4679
4680 static int __init hwsim_init_netlink(void)
4681 {
4682         int rc;
4683
4684         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
4685
4686         rc = genl_register_family(&hwsim_genl_family);
4687         if (rc)
4688                 goto failure;
4689
4690         rc = netlink_register_notifier(&hwsim_netlink_notifier);
4691         if (rc) {
4692                 genl_unregister_family(&hwsim_genl_family);
4693                 goto failure;
4694         }
4695
4696         return 0;
4697
4698 failure:
4699         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4700         return -EINVAL;
4701 }
4702
4703 static __net_init int hwsim_init_net(struct net *net)
4704 {
4705         return hwsim_net_set_netgroup(net);
4706 }
4707
4708 static void __net_exit hwsim_exit_net(struct net *net)
4709 {
4710         struct mac80211_hwsim_data *data, *tmp;
4711         LIST_HEAD(list);
4712
4713         spin_lock_bh(&hwsim_radio_lock);
4714         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
4715                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
4716                         continue;
4717
4718                 /* Radios created in init_net are returned to init_net. */
4719                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
4720                         continue;
4721
4722                 list_move(&data->list, &list);
4723                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4724                                        hwsim_rht_params);
4725                 hwsim_radios_generation++;
4726         }
4727         spin_unlock_bh(&hwsim_radio_lock);
4728
4729         list_for_each_entry_safe(data, tmp, &list, list) {
4730                 list_del(&data->list);
4731                 mac80211_hwsim_del_radio(data,
4732                                          wiphy_name(data->hw->wiphy),
4733                                          NULL);
4734         }
4735
4736         ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
4737 }
4738
4739 static struct pernet_operations hwsim_net_ops = {
4740         .init = hwsim_init_net,
4741         .exit = hwsim_exit_net,
4742         .id   = &hwsim_net_id,
4743         .size = sizeof(struct hwsim_net),
4744 };
4745
4746 static void hwsim_exit_netlink(void)
4747 {
4748         /* unregister the notifier */
4749         netlink_unregister_notifier(&hwsim_netlink_notifier);
4750         /* unregister the family */
4751         genl_unregister_family(&hwsim_genl_family);
4752 }
4753
4754 #if IS_REACHABLE(CONFIG_VIRTIO)
4755 static void hwsim_virtio_tx_done(struct virtqueue *vq)
4756 {
4757         unsigned int len;
4758         struct sk_buff *skb;
4759         unsigned long flags;
4760
4761         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4762         while ((skb = virtqueue_get_buf(vq, &len)))
4763                 nlmsg_free(skb);
4764         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4765 }
4766
4767 static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
4768 {
4769         struct nlmsghdr *nlh;
4770         struct genlmsghdr *gnlh;
4771         struct nlattr *tb[HWSIM_ATTR_MAX + 1];
4772         struct genl_info info = {};
4773         int err;
4774
4775         nlh = nlmsg_hdr(skb);
4776         gnlh = nlmsg_data(nlh);
4777         err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
4778                             hwsim_genl_policy, NULL);
4779         if (err) {
4780                 pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
4781                 return err;
4782         }
4783
4784         info.attrs = tb;
4785
4786         switch (gnlh->cmd) {
4787         case HWSIM_CMD_FRAME:
4788                 hwsim_cloned_frame_received_nl(skb, &info);
4789                 break;
4790         case HWSIM_CMD_TX_INFO_FRAME:
4791                 hwsim_tx_info_frame_received_nl(skb, &info);
4792                 break;
4793         default:
4794                 pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
4795                 return -EPROTO;
4796         }
4797         return 0;
4798 }
4799
4800 static void hwsim_virtio_rx_work(struct work_struct *work)
4801 {
4802         struct virtqueue *vq;
4803         unsigned int len;
4804         struct sk_buff *skb;
4805         struct scatterlist sg[1];
4806         int err;
4807         unsigned long flags;
4808
4809         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4810         if (!hwsim_virtio_enabled)
4811                 goto out_unlock;
4812
4813         skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
4814         if (!skb)
4815                 goto out_unlock;
4816         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4817
4818         skb->data = skb->head;
4819         skb_set_tail_pointer(skb, len);
4820         hwsim_virtio_handle_cmd(skb);
4821
4822         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4823         if (!hwsim_virtio_enabled) {
4824                 nlmsg_free(skb);
4825                 goto out_unlock;
4826         }
4827         vq = hwsim_vqs[HWSIM_VQ_RX];
4828         sg_init_one(sg, skb->head, skb_end_offset(skb));
4829         err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
4830         if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
4831                 nlmsg_free(skb);
4832         else
4833                 virtqueue_kick(vq);
4834         schedule_work(&hwsim_virtio_rx);
4835
4836 out_unlock:
4837         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4838 }
4839
4840 static void hwsim_virtio_rx_done(struct virtqueue *vq)
4841 {
4842         schedule_work(&hwsim_virtio_rx);
4843 }
4844
4845 static int init_vqs(struct virtio_device *vdev)
4846 {
4847         vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
4848                 [HWSIM_VQ_TX] = hwsim_virtio_tx_done,
4849                 [HWSIM_VQ_RX] = hwsim_virtio_rx_done,
4850         };
4851         const char *names[HWSIM_NUM_VQS] = {
4852                 [HWSIM_VQ_TX] = "tx",
4853                 [HWSIM_VQ_RX] = "rx",
4854         };
4855
4856         return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
4857                                hwsim_vqs, callbacks, names, NULL);
4858 }
4859
4860 static int fill_vq(struct virtqueue *vq)
4861 {
4862         int i, err;
4863         struct sk_buff *skb;
4864         struct scatterlist sg[1];
4865
4866         for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
4867                 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4868                 if (!skb)
4869                         return -ENOMEM;
4870
4871                 sg_init_one(sg, skb->head, skb_end_offset(skb));
4872                 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4873                 if (err) {
4874                         nlmsg_free(skb);
4875                         return err;
4876                 }
4877         }
4878         virtqueue_kick(vq);
4879         return 0;
4880 }
4881
4882 static void remove_vqs(struct virtio_device *vdev)
4883 {
4884         int i;
4885
4886         virtio_reset_device(vdev);
4887
4888         for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
4889                 struct virtqueue *vq = hwsim_vqs[i];
4890                 struct sk_buff *skb;
4891
4892                 while ((skb = virtqueue_detach_unused_buf(vq)))
4893                         nlmsg_free(skb);
4894         }
4895
4896         vdev->config->del_vqs(vdev);
4897 }
4898
4899 static int hwsim_virtio_probe(struct virtio_device *vdev)
4900 {
4901         int err;
4902         unsigned long flags;
4903
4904         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4905         if (hwsim_virtio_enabled) {
4906                 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4907                 return -EEXIST;
4908         }
4909         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4910
4911         err = init_vqs(vdev);
4912         if (err)
4913                 return err;
4914
4915         err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
4916         if (err)
4917                 goto out_remove;
4918
4919         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4920         hwsim_virtio_enabled = true;
4921         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4922
4923         schedule_work(&hwsim_virtio_rx);
4924         return 0;
4925
4926 out_remove:
4927         remove_vqs(vdev);
4928         return err;
4929 }
4930
4931 static void hwsim_virtio_remove(struct virtio_device *vdev)
4932 {
4933         hwsim_virtio_enabled = false;
4934
4935         cancel_work_sync(&hwsim_virtio_rx);
4936
4937         remove_vqs(vdev);
4938 }
4939
4940 /* MAC80211_HWSIM virtio device id table */
4941 static const struct virtio_device_id id_table[] = {
4942         { VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
4943         { 0 }
4944 };
4945 MODULE_DEVICE_TABLE(virtio, id_table);
4946
4947 static struct virtio_driver virtio_hwsim = {
4948         .driver.name = KBUILD_MODNAME,
4949         .driver.owner = THIS_MODULE,
4950         .id_table = id_table,
4951         .probe = hwsim_virtio_probe,
4952         .remove = hwsim_virtio_remove,
4953 };
4954
4955 static int hwsim_register_virtio_driver(void)
4956 {
4957         return register_virtio_driver(&virtio_hwsim);
4958 }
4959
4960 static void hwsim_unregister_virtio_driver(void)
4961 {
4962         unregister_virtio_driver(&virtio_hwsim);
4963 }
4964 #else
4965 static inline int hwsim_register_virtio_driver(void)
4966 {
4967         return 0;
4968 }
4969
4970 static inline void hwsim_unregister_virtio_driver(void)
4971 {
4972 }
4973 #endif
4974
4975 static int __init init_mac80211_hwsim(void)
4976 {
4977         int i, err;
4978
4979         if (radios < 0 || radios > 100)
4980                 return -EINVAL;
4981
4982         if (channels < 1)
4983                 return -EINVAL;
4984
4985         err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
4986         if (err)
4987                 return err;
4988
4989         err = register_pernet_device(&hwsim_net_ops);
4990         if (err)
4991                 goto out_free_rht;
4992
4993         err = platform_driver_register(&mac80211_hwsim_driver);
4994         if (err)
4995                 goto out_unregister_pernet;
4996
4997         err = hwsim_init_netlink();
4998         if (err)
4999                 goto out_unregister_driver;
5000
5001         err = hwsim_register_virtio_driver();
5002         if (err)
5003                 goto out_exit_netlink;
5004
5005         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
5006         if (IS_ERR(hwsim_class)) {
5007                 err = PTR_ERR(hwsim_class);
5008                 goto out_exit_virtio;
5009         }
5010
5011         hwsim_init_s1g_channels(hwsim_channels_s1g);
5012
5013         for (i = 0; i < radios; i++) {
5014                 struct hwsim_new_radio_params param = { 0 };
5015
5016                 param.channels = channels;
5017
5018                 switch (regtest) {
5019                 case HWSIM_REGTEST_DIFF_COUNTRY:
5020                         if (i < ARRAY_SIZE(hwsim_alpha2s))
5021                                 param.reg_alpha2 = hwsim_alpha2s[i];
5022                         break;
5023                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
5024                         if (!i)
5025                                 param.reg_alpha2 = hwsim_alpha2s[0];
5026                         break;
5027                 case HWSIM_REGTEST_STRICT_ALL:
5028                         param.reg_strict = true;
5029                         fallthrough;
5030                 case HWSIM_REGTEST_DRIVER_REG_ALL:
5031                         param.reg_alpha2 = hwsim_alpha2s[0];
5032                         break;
5033                 case HWSIM_REGTEST_WORLD_ROAM:
5034                         if (i == 0)
5035                                 param.regd = &hwsim_world_regdom_custom_01;
5036                         break;
5037                 case HWSIM_REGTEST_CUSTOM_WORLD:
5038                         param.regd = &hwsim_world_regdom_custom_01;
5039                         break;
5040                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
5041                         if (i == 0)
5042                                 param.regd = &hwsim_world_regdom_custom_01;
5043                         else if (i == 1)
5044                                 param.regd = &hwsim_world_regdom_custom_02;
5045                         break;
5046                 case HWSIM_REGTEST_STRICT_FOLLOW:
5047                         if (i == 0) {
5048                                 param.reg_strict = true;
5049                                 param.reg_alpha2 = hwsim_alpha2s[0];
5050                         }
5051                         break;
5052                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
5053                         if (i == 0) {
5054                                 param.reg_strict = true;
5055                                 param.reg_alpha2 = hwsim_alpha2s[0];
5056                         } else if (i == 1) {
5057                                 param.reg_alpha2 = hwsim_alpha2s[1];
5058                         }
5059                         break;
5060                 case HWSIM_REGTEST_ALL:
5061                         switch (i) {
5062                         case 0:
5063                                 param.regd = &hwsim_world_regdom_custom_01;
5064                                 break;
5065                         case 1:
5066                                 param.regd = &hwsim_world_regdom_custom_02;
5067                                 break;
5068                         case 2:
5069                                 param.reg_alpha2 = hwsim_alpha2s[0];
5070                                 break;
5071                         case 3:
5072                                 param.reg_alpha2 = hwsim_alpha2s[1];
5073                                 break;
5074                         case 4:
5075                                 param.reg_strict = true;
5076                                 param.reg_alpha2 = hwsim_alpha2s[2];
5077                                 break;
5078                         }
5079                         break;
5080                 default:
5081                         break;
5082                 }
5083
5084                 param.p2p_device = support_p2p_device;
5085                 param.use_chanctx = channels > 1;
5086                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
5087                 if (param.p2p_device)
5088                         param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
5089
5090                 err = mac80211_hwsim_new_radio(NULL, &param);
5091                 if (err < 0)
5092                         goto out_free_radios;
5093         }
5094
5095         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
5096                                  hwsim_mon_setup);
5097         if (hwsim_mon == NULL) {
5098                 err = -ENOMEM;
5099                 goto out_free_radios;
5100         }
5101
5102         rtnl_lock();
5103         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
5104         if (err < 0) {
5105                 rtnl_unlock();
5106                 goto out_free_mon;
5107         }
5108
5109         err = register_netdevice(hwsim_mon);
5110         if (err < 0) {
5111                 rtnl_unlock();
5112                 goto out_free_mon;
5113         }
5114         rtnl_unlock();
5115
5116         return 0;
5117
5118 out_free_mon:
5119         free_netdev(hwsim_mon);
5120 out_free_radios:
5121         mac80211_hwsim_free();
5122 out_exit_virtio:
5123         hwsim_unregister_virtio_driver();
5124 out_exit_netlink:
5125         hwsim_exit_netlink();
5126 out_unregister_driver:
5127         platform_driver_unregister(&mac80211_hwsim_driver);
5128 out_unregister_pernet:
5129         unregister_pernet_device(&hwsim_net_ops);
5130 out_free_rht:
5131         rhashtable_destroy(&hwsim_radios_rht);
5132         return err;
5133 }
5134 module_init(init_mac80211_hwsim);
5135
5136 static void __exit exit_mac80211_hwsim(void)
5137 {
5138         pr_debug("mac80211_hwsim: unregister radios\n");
5139
5140         hwsim_unregister_virtio_driver();
5141         hwsim_exit_netlink();
5142
5143         mac80211_hwsim_free();
5144
5145         rhashtable_destroy(&hwsim_radios_rht);
5146         unregister_netdev(hwsim_mon);
5147         platform_driver_unregister(&mac80211_hwsim_driver);
5148         unregister_pernet_device(&hwsim_net_ops);
5149 }
5150 module_exit(exit_mac80211_hwsim);