drivers/net/wireless/mac80211_hwsim.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   4  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   5  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   6  * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
   7  * Copyright (C) 2018 - 2020 Intel Corporation
   8  */
   9
  10 /*
  11  * TODO:
  12  * - Add TSF sync and fix IBSS beacon transmission by adding
  13  *   competition for "air time" at TBTT
  14  * - RX filtering based on filter configuration (data->rx_filter)
  15  */
  16
  17 #include <linux/list.h>
  18 #include <linux/slab.h>
  19 #include <linux/spinlock.h>
  20 #include <net/dst.h>
  21 #include <net/xfrm.h>
  22 #include <net/mac80211.h>
  23 #include <net/ieee80211_radiotap.h>
  24 #include <linux/if_arp.h>
  25 #include <linux/rtnetlink.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/debugfs.h>
  29 #include <linux/module.h>
  30 #include <linux/ktime.h>
  31 #include <net/genetlink.h>
  32 #include <net/net_namespace.h>
  33 #include <net/netns/generic.h>
  34 #include <linux/rhashtable.h>
  35 #include <linux/nospec.h>
  36 #include <linux/virtio.h>
  37 #include <linux/virtio_ids.h>
  38 #include <linux/virtio_config.h>
  39 #include "mac80211_hwsim.h"
  40
  41 #define WARN_QUEUE 100
  42 #define MAX_QUEUE 200
  43
  44 MODULE_AUTHOR("Jouni Malinen");
  45 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  46 MODULE_LICENSE("GPL");
  47
  48 static int radios = 2;
  49 module_param(radios, int, 0444);
  50 MODULE_PARM_DESC(radios, "Number of simulated radios");
  51
  52 static int channels = 1;
  53 module_param(channels, int, 0444);
  54 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  55
  56 static bool paged_rx = false;
  57 module_param(paged_rx, bool, 0644);
  58 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  59
  60 static bool rctbl = false;
  61 module_param(rctbl, bool, 0444);
  62 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  63
  64 static bool support_p2p_device = true;
  65 module_param(support_p2p_device, bool, 0444);
  66 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  67
  68 /**
  69  * enum hwsim_regtest - the type of regulatory tests we offer
  70  *
  71  * These are the different values you can use for the regtest
  72  * module parameter. This is useful to help test world roaming
  73  * and the driver regulatory_hint() call and combinations of these.
  74  * If you want to do specific alpha2 regulatory domain tests simply
  75  * use the userspace regulatory request as that will be respected as
  76  * well without the need of this module parameter. This is designed
  77  * only for testing the driver regulatory request, world roaming
  78  * and all possible combinations.
  79  *
  80  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  81  *      this is the default value.
  82  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  83  *      hint, only one driver regulatory hint will be sent as such the
  84  *      secondary radios are expected to follow.
  85  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  86  *      request with all radios reporting the same regulatory domain.
  87  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  88  *      different regulatory domains requests. Expected behaviour is for
  89  *      an intersection to occur but each device will still use their
  90  *      respective regulatory requested domains. Subsequent radios will
  91  *      use the resulting intersection.
  92  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  93  *      this by using a custom beacon-capable regulatory domain for the first
  94  *      radio. All other device world roam.
  95  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  96  *      domain requests. All radios will adhere to this custom world regulatory
  97  *      domain.
  98  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  99  *      domain requests. The first radio will adhere to the first custom world
 100  *      regulatory domain, the second one to the second custom world regulatory
 101  *      domain. All other devices will world roam.
 102  * @HWSIM_REGTEST_STRICT_FOLLOW: Used for testing strict regulatory domain
 103  *      settings, only the first radio will send a regulatory domain request
 104  *      and use strict settings. The rest of the radios are expected to follow.
 105  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 106  *      settings. All radios will adhere to this.
 107  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 108  *      domain settings, combined with secondary driver regulatory domain
 109  *      settings. The first radio will get a strict regulatory domain setting
 110  *      using the first driver regulatory request and the second radio will use
 111  *      non-strict settings using the second driver regulatory request. All
 112  *      other devices should follow the intersection created between the
 113  *      first two.
 114  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 115  *      at least 6 radios for a complete test. We will test in this order:
 116  *      1 - driver custom world regulatory domain
 117  *      2 - second custom world regulatory domain
 118  *      3 - first driver regulatory domain request
 119  *      4 - second driver regulatory domain request
 120  *      5 - strict regulatory domain settings using the third driver regulatory
 121  *          domain request
 122  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 123  *                 regulatory requests.
 124  */
 125 enum hwsim_regtest {
 126         HWSIM_REGTEST_DISABLED = 0,
 127         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 128         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 129         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 130         HWSIM_REGTEST_WORLD_ROAM = 4,
 131         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 132         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 133         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 134         HWSIM_REGTEST_STRICT_ALL = 8,
 135         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 136         HWSIM_REGTEST_ALL = 10,
 137 };
 138
 139 /* Set to one of the HWSIM_REGTEST_* values above */
 140 static int regtest = HWSIM_REGTEST_DISABLED;
 141 module_param(regtest, int, 0444);
 142 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 143
 144 static const char *hwsim_alpha2s[] = {
 145         "FI",
 146         "AL",
 147         "US",
 148         "DE",
 149         "JP",
 150         "AL",
 151 };
 152
 153 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 154         .n_reg_rules = 5,
 155         .alpha2 =  "99",
 156         .reg_rules = {
 157                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 158                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 159                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 160                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 161                 REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
 162         }
 163 };
 164
 165 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 166         .n_reg_rules = 3,
 167         .alpha2 =  "99",
 168         .reg_rules = {
 169                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 170                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 171                          NL80211_RRF_NO_IR),
 172                 REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
 173         }
 174 };
 175
 176 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 177         &hwsim_world_regdom_custom_01,
 178         &hwsim_world_regdom_custom_02,
 179 };
 180
 181 struct hwsim_vif_priv {
 182         u32 magic;
 183         u8 bssid[ETH_ALEN];
 184         bool assoc;
 185         bool bcn_en;
 186         u16 aid;
 187 };
 188
 189 #define HWSIM_VIF_MAGIC 0x69537748
 190
 191 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 192 {
 193         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 194         WARN(vp->magic != HWSIM_VIF_MAGIC,
 195              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 196              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 197 }
 198
 199 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = HWSIM_VIF_MAGIC;
 203 }
 204
 205 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 206 {
 207         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 208         vp->magic = 0;
 209 }
 210
 211 struct hwsim_sta_priv {
 212         u32 magic;
 213 };
 214
 215 #define HWSIM_STA_MAGIC 0x6d537749
 216
 217 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 221 }
 222
 223 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = HWSIM_STA_MAGIC;
 227 }
 228
 229 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 230 {
 231         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 232         sp->magic = 0;
 233 }
 234
 235 struct hwsim_chanctx_priv {
 236         u32 magic;
 237 };
 238
 239 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 240
 241 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 245 }
 246
 247 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = HWSIM_CHANCTX_MAGIC;
 251 }
 252
 253 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 254 {
 255         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 256         cp->magic = 0;
 257 }
 258
 259 static unsigned int hwsim_net_id;
 260
 261 static DEFINE_IDA(hwsim_netgroup_ida);
 262
 263 struct hwsim_net {
 264         int netgroup;
 265         u32 wmediumd;
 266 };
 267
 268 static inline int hwsim_net_get_netgroup(struct net *net)
 269 {
 270         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 271
 272         return hwsim_net->netgroup;
 273 }
 274
 275 static inline int hwsim_net_set_netgroup(struct net *net)
 276 {
 277         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 278
 279         hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
 280                                              0, 0, GFP_KERNEL);
 281         return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
 282 }
 283
 284 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 285 {
 286         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 287
 288         return hwsim_net->wmediumd;
 289 }
 290
 291 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 292 {
 293         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 294
 295         hwsim_net->wmediumd = portid;
 296 }
 297
 298 static struct class *hwsim_class;
 299
 300 static struct net_device *hwsim_mon; /* global monitor netdev */
 301
 302 #define CHAN2G(_freq)  { \
 303         .band = NL80211_BAND_2GHZ, \
 304         .center_freq = (_freq), \
 305         .hw_value = (_freq), \
 306 }
 307
 308 #define CHAN5G(_freq) { \
 309         .band = NL80211_BAND_5GHZ, \
 310         .center_freq = (_freq), \
 311         .hw_value = (_freq), \
 312 }
 313
 314 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 315         CHAN2G(2412), /* Channel 1 */
 316         CHAN2G(2417), /* Channel 2 */
 317         CHAN2G(2422), /* Channel 3 */
 318         CHAN2G(2427), /* Channel 4 */
 319         CHAN2G(2432), /* Channel 5 */
 320         CHAN2G(2437), /* Channel 6 */
 321         CHAN2G(2442), /* Channel 7 */
 322         CHAN2G(2447), /* Channel 8 */
 323         CHAN2G(2452), /* Channel 9 */
 324         CHAN2G(2457), /* Channel 10 */
 325         CHAN2G(2462), /* Channel 11 */
 326         CHAN2G(2467), /* Channel 12 */
 327         CHAN2G(2472), /* Channel 13 */
 328         CHAN2G(2484), /* Channel 14 */
 329 };
 330
 331 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 332         CHAN5G(5180), /* Channel 36 */
 333         CHAN5G(5200), /* Channel 40 */
 334         CHAN5G(5220), /* Channel 44 */
 335         CHAN5G(5240), /* Channel 48 */
 336
 337         CHAN5G(5260), /* Channel 52 */
 338         CHAN5G(5280), /* Channel 56 */
 339         CHAN5G(5300), /* Channel 60 */
 340         CHAN5G(5320), /* Channel 64 */
 341
 342         CHAN5G(5500), /* Channel 100 */
 343         CHAN5G(5520), /* Channel 104 */
 344         CHAN5G(5540), /* Channel 108 */
 345         CHAN5G(5560), /* Channel 112 */
 346         CHAN5G(5580), /* Channel 116 */
 347         CHAN5G(5600), /* Channel 120 */
 348         CHAN5G(5620), /* Channel 124 */
 349         CHAN5G(5640), /* Channel 128 */
 350         CHAN5G(5660), /* Channel 132 */
 351         CHAN5G(5680), /* Channel 136 */
 352         CHAN5G(5700), /* Channel 140 */
 353
 354         CHAN5G(5745), /* Channel 149 */
 355         CHAN5G(5765), /* Channel 153 */
 356         CHAN5G(5785), /* Channel 157 */
 357         CHAN5G(5805), /* Channel 161 */
 358         CHAN5G(5825), /* Channel 165 */
 359         CHAN5G(5845), /* Channel 169 */
 360
 361         CHAN5G(5855), /* Channel 171 */
 362         CHAN5G(5860), /* Channel 172 */
 363         CHAN5G(5865), /* Channel 173 */
 364         CHAN5G(5870), /* Channel 174 */
 365
 366         CHAN5G(5875), /* Channel 175 */
 367         CHAN5G(5880), /* Channel 176 */
 368         CHAN5G(5885), /* Channel 177 */
 369         CHAN5G(5890), /* Channel 178 */
 370         CHAN5G(5895), /* Channel 179 */
 371         CHAN5G(5900), /* Channel 180 */
 372         CHAN5G(5905), /* Channel 181 */
 373
 374         CHAN5G(5910), /* Channel 182 */
 375         CHAN5G(5915), /* Channel 183 */
 376         CHAN5G(5920), /* Channel 184 */
 377         CHAN5G(5925), /* Channel 185 */
 378 };
 379
 380 #define NUM_S1G_CHANS_US 51
 381 static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
 382
 383 static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
 384         .s1g = true,
 385         .cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
 386                  0,
 387                  0,
 388                  S1G_CAP3_MAX_MPDU_LEN,
 389                  0,
 390                  S1G_CAP5_AMPDU,
 391                  0,
 392                  S1G_CAP7_DUP_1MHZ,
 393                  S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
 394                  0},
 395         .nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
 396         /* RX Highest Supported Long GI Data Rate 0:7 */
 397                      0,
 398         /* RX Highest Supported Long GI Data Rate 0:7 */
 399         /* TX S1G MCS Map 0:6 */
 400                      0xfa,
 401         /* TX S1G MCS Map :7 */
 402         /* TX Highest Supported Long GI Data Rate 0:6 */
 403                      0x80,
 404         /* TX Highest Supported Long GI Data Rate 7:8 */
 405         /* Rx Single spatial stream and S1G-MCS Map for 1MHz */
 406         /* Tx Single spatial stream and S1G-MCS Map for 1MHz */
 407                      0 },
 408 };
 409
 410 static void hwsim_init_s1g_channels(struct ieee80211_channel *channels)
 411 {
 412         int ch, freq;
 413
 414         for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
 415                 freq = 902000 + (ch + 1) * 500;
 416                 channels[ch].band = NL80211_BAND_S1GHZ;
 417                 channels[ch].center_freq = KHZ_TO_MHZ(freq);
 418                 channels[ch].freq_offset = freq % 1000;
 419                 channels[ch].hw_value = ch + 1;
 420         }
 421 }
 422
 423 static const struct ieee80211_rate hwsim_rates[] = {
 424         { .bitrate = 10 },
 425         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 426         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 427         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 428         { .bitrate = 60 },
 429         { .bitrate = 90 },
 430         { .bitrate = 120 },
 431         { .bitrate = 180 },
 432         { .bitrate = 240 },
 433         { .bitrate = 360 },
 434         { .bitrate = 480 },
 435         { .bitrate = 540 }
 436 };
 437
 438 static const u32 hwsim_ciphers[] = {
 439         WLAN_CIPHER_SUITE_WEP40,
 440         WLAN_CIPHER_SUITE_WEP104,
 441         WLAN_CIPHER_SUITE_TKIP,
 442         WLAN_CIPHER_SUITE_CCMP,
 443         WLAN_CIPHER_SUITE_CCMP_256,
 444         WLAN_CIPHER_SUITE_GCMP,
 445         WLAN_CIPHER_SUITE_GCMP_256,
 446         WLAN_CIPHER_SUITE_AES_CMAC,
 447         WLAN_CIPHER_SUITE_BIP_CMAC_256,
 448         WLAN_CIPHER_SUITE_BIP_GMAC_128,
 449         WLAN_CIPHER_SUITE_BIP_GMAC_256,
 450 };
 451
 452 #define OUI_QCA 0x001374
 453 #define QCA_NL80211_SUBCMD_TEST 1
 454 enum qca_nl80211_vendor_subcmds {
 455         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 456         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 457 };
 458
 459 static const struct nla_policy
 460 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 461         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 462 };
 463
 464 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 465                                           struct wireless_dev *wdev,
 466                                           const void *data, int data_len)
 467 {
 468         struct sk_buff *skb;
 469         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 470         int err;
 471         u32 val;
 472
 473         err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
 474                                    data_len, hwsim_vendor_test_policy, NULL);
 475         if (err)
 476                 return err;
 477         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 478                 return -EINVAL;
 479         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 480         wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
 481
 482         /* Send a vendor event as a test. Note that this would not normally be
 483          * done within a command handler, but rather, based on some other
 484          * trigger. For simplicity, this command is used to trigger the event
 485          * here.
 486          *
 487          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 488          */
 489         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 490         if (skb) {
 491                 /* skb_put() or nla_put() will fill up data within
 492                  * NL80211_ATTR_VENDOR_DATA.
 493                  */
 494
 495                 /* Add vendor data */
 496                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 497
 498                 /* Send the event - this will call nla_nest_end() */
 499                 cfg80211_vendor_event(skb, GFP_KERNEL);
 500         }
 501
 502         /* Send a response to the command */
 503         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 504         if (!skb)
 505                 return -ENOMEM;
 506
 507         /* skb_put() or nla_put() will fill up data within
 508          * NL80211_ATTR_VENDOR_DATA
 509          */
 510         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 511
 512         return cfg80211_vendor_cmd_reply(skb);
 513 }
 514
 515 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 516         {
 517                 .info = { .vendor_id = OUI_QCA,
 518                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 519                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 520                 .doit = mac80211_hwsim_vendor_cmd_test,
 521                 .policy = hwsim_vendor_test_policy,
 522                 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
 523         }
 524 };
 525
 526 /* Advertise support vendor specific events */
 527 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 528         { .vendor_id = OUI_QCA, .subcmd = 1 },
 529 };
 530
 531 static spinlock_t hwsim_radio_lock;
 532 static LIST_HEAD(hwsim_radios);
 533 static struct rhashtable hwsim_radios_rht;
 534 static int hwsim_radio_idx;
 535 static int hwsim_radios_generation = 1;
 536
 537 static struct platform_driver mac80211_hwsim_driver = {
 538         .driver = {
 539                 .name = "mac80211_hwsim",
 540         },
 541 };
 542
 543 struct mac80211_hwsim_data {
 544         struct list_head list;
 545         struct rhash_head rht;
 546         struct ieee80211_hw *hw;
 547         struct device *dev;
 548         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 549         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 550         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 551         struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
 552         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 553         struct ieee80211_iface_combination if_combination;
 554         struct ieee80211_iface_limit if_limits[3];
 555         int n_if_limits;
 556
 557         u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
 558
 559         struct mac_address addresses[2];
 560         struct ieee80211_chanctx_conf *chanctx;
 561         int channels, idx;
 562         bool use_chanctx;
 563         bool destroy_on_close;
 564         u32 portid;
 565         char alpha2[2];
 566         const struct ieee80211_regdomain *regd;
 567
 568         struct ieee80211_channel *tmp_chan;
 569         struct ieee80211_channel *roc_chan;
 570         u32 roc_duration;
 571         struct delayed_work roc_start;
 572         struct delayed_work roc_done;
 573         struct delayed_work hw_scan;
 574         struct cfg80211_scan_request *hw_scan_request;
 575         struct ieee80211_vif *hw_scan_vif;
 576         int scan_chan_idx;
 577         u8 scan_addr[ETH_ALEN];
 578         struct {
 579                 struct ieee80211_channel *channel;
 580                 unsigned long next_start, start, end;
 581         } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 582                       ARRAY_SIZE(hwsim_channels_5ghz)];
 583
 584         struct ieee80211_channel *channel;
 585         u64 beacon_int  /* beacon interval in us */;
 586         unsigned int rx_filter;
 587         bool started, idle, scanning;
 588         struct mutex mutex;
 589         struct hrtimer beacon_timer;
 590         enum ps_mode {
 591                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 592         } ps;
 593         bool ps_poll_pending;
 594         struct dentry *debugfs;
 595
 596         atomic_t pending_cookie;
 597         struct sk_buff_head pending;    /* packets pending */
 598         /*
 599          * Only radios in the same group can communicate together (the
 600          * channel has to match too). Each bit represents a group. A
 601          * radio can be in more than one group.
 602          */
 603         u64 group;
 604
 605         /* group shared by radios created in the same netns */
 606         int netgroup;
 607         /* wmediumd portid responsible for netgroup of this radio */
 608         u32 wmediumd;
 609
 610         /* difference between this hw's clock and the real clock, in usecs */
 611         s64 tsf_offset;
 612         s64 bcn_delta;
 613         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 614         u64 abs_bcn_ts;
 615
 616         /* Stats */
 617         u64 tx_pkts;
 618         u64 rx_pkts;
 619         u64 tx_bytes;
 620         u64 rx_bytes;
 621         u64 tx_dropped;
 622         u64 tx_failed;
 623 };
 624
 625 static const struct rhashtable_params hwsim_rht_params = {
 626         .nelem_hint = 2,
 627         .automatic_shrinking = true,
 628         .key_len = ETH_ALEN,
 629         .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
 630         .head_offset = offsetof(struct mac80211_hwsim_data, rht),
 631 };
 632
 633 struct hwsim_radiotap_hdr {
 634         struct ieee80211_radiotap_header hdr;
 635         __le64 rt_tsft;
 636         u8 rt_flags;
 637         u8 rt_rate;
 638         __le16 rt_channel;
 639         __le16 rt_chbitmask;
 640 } __packed;
 641
 642 struct hwsim_radiotap_ack_hdr {
 643         struct ieee80211_radiotap_header hdr;
 644         u8 rt_flags;
 645         u8 pad;
 646         __le16 rt_channel;
 647         __le16 rt_chbitmask;
 648 } __packed;
 649
 650 /* MAC80211_HWSIM netlink family */
 651 static struct genl_family hwsim_genl_family;
 652
 653 enum hwsim_multicast_groups {
 654         HWSIM_MCGRP_CONFIG,
 655 };
 656
 657 static const struct genl_multicast_group hwsim_mcgrps[] = {
 658         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 659 };
 660
 661 /* MAC80211_HWSIM netlink policy */
 662
 663 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 664         [HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
 665         [HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
 666         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 667                                .len = IEEE80211_MAX_DATA_LEN },
 668         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 669         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 670         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 671         [HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
 672                                  .len = IEEE80211_TX_MAX_RATES *
 673                                         sizeof(struct hwsim_tx_rate)},
 674         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 675         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 676         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 677         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 678         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 679         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 680         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 681         [HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
 682         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 683         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 684         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 685         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 686         [HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
 687         [HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
 688         [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
 689         [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
 690 };
 691
 692 #if IS_REACHABLE(CONFIG_VIRTIO)
 693
 694 /* MAC80211_HWSIM virtio queues */
 695 static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
 696 static bool hwsim_virtio_enabled;
 697 static spinlock_t hwsim_virtio_lock;
 698
 699 static void hwsim_virtio_rx_work(struct work_struct *work);
 700 static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
 701
 702 static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 703                            struct sk_buff *skb)
 704 {
 705         struct scatterlist sg[1];
 706         unsigned long flags;
 707         int err;
 708
 709         spin_lock_irqsave(&hwsim_virtio_lock, flags);
 710         if (!hwsim_virtio_enabled) {
 711                 err = -ENODEV;
 712                 goto out_free;
 713         }
 714
 715         sg_init_one(sg, skb->head, skb_end_offset(skb));
 716         err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
 717                                    GFP_ATOMIC);
 718         if (err)
 719                 goto out_free;
 720         virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
 721         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 722         return 0;
 723
 724 out_free:
 725         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 726         nlmsg_free(skb);
 727         return err;
 728 }
 729 #else
 730 /* cause a linker error if this ends up being needed */
 731 extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 732                            struct sk_buff *skb);
 733 #define hwsim_virtio_enabled false
 734 #endif
 735
 736 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 737                                     struct sk_buff *skb,
 738                                     struct ieee80211_channel *chan);
 739
 740 /* sysfs attributes */
 741 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 742 {
 743         struct mac80211_hwsim_data *data = dat;
 744         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 745         struct sk_buff *skb;
 746         struct ieee80211_pspoll *pspoll;
 747
 748         if (!vp->assoc)
 749                 return;
 750
 751         wiphy_dbg(data->hw->wiphy,
 752                   "%s: send PS-Poll to %pM for aid %d\n",
 753                   __func__, vp->bssid, vp->aid);
 754
 755         skb = dev_alloc_skb(sizeof(*pspoll));
 756         if (!skb)
 757                 return;
 758         pspoll = skb_put(skb, sizeof(*pspoll));
 759         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 760                                             IEEE80211_STYPE_PSPOLL |
 761                                             IEEE80211_FCTL_PM);
 762         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 763         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 764         memcpy(pspoll->ta, mac, ETH_ALEN);
 765
 766         rcu_read_lock();
 767         mac80211_hwsim_tx_frame(data->hw, skb,
 768                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 769         rcu_read_unlock();
 770 }
 771
 772 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 773                                 struct ieee80211_vif *vif, int ps)
 774 {
 775         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 776         struct sk_buff *skb;
 777         struct ieee80211_hdr *hdr;
 778         struct ieee80211_tx_info *cb;
 779
 780         if (!vp->assoc)
 781                 return;
 782
 783         wiphy_dbg(data->hw->wiphy,
 784                   "%s: send data::nullfunc to %pM ps=%d\n",
 785                   __func__, vp->bssid, ps);
 786
 787         skb = dev_alloc_skb(sizeof(*hdr));
 788         if (!skb)
 789                 return;
 790         hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 791         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 792                                          IEEE80211_STYPE_NULLFUNC |
 793                                          IEEE80211_FCTL_TODS |
 794                                          (ps ? IEEE80211_FCTL_PM : 0));
 795         hdr->duration_id = cpu_to_le16(0);
 796         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 797         memcpy(hdr->addr2, mac, ETH_ALEN);
 798         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 799
 800         cb = IEEE80211_SKB_CB(skb);
 801         cb->control.rates[0].count = 1;
 802         cb->control.rates[1].idx = -1;
 803
 804         rcu_read_lock();
 805         mac80211_hwsim_tx_frame(data->hw, skb,
 806                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 807         rcu_read_unlock();
 808 }
 809
 810
 811 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 812                                    struct ieee80211_vif *vif)
 813 {
 814         struct mac80211_hwsim_data *data = dat;
 815         hwsim_send_nullfunc(data, mac, vif, 1);
 816 }
 817
 818 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 819                                       struct ieee80211_vif *vif)
 820 {
 821         struct mac80211_hwsim_data *data = dat;
 822         hwsim_send_nullfunc(data, mac, vif, 0);
 823 }
 824
 825 static int hwsim_fops_ps_read(void *dat, u64 *val)
 826 {
 827         struct mac80211_hwsim_data *data = dat;
 828         *val = data->ps;
 829         return 0;
 830 }
 831
 832 static int hwsim_fops_ps_write(void *dat, u64 val)
 833 {
 834         struct mac80211_hwsim_data *data = dat;
 835         enum ps_mode old_ps;
 836
 837         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 838             val != PS_MANUAL_POLL)
 839                 return -EINVAL;
 840
 841         if (val == PS_MANUAL_POLL) {
 842                 if (data->ps != PS_ENABLED)
 843                         return -EINVAL;
 844                 local_bh_disable();
 845                 ieee80211_iterate_active_interfaces_atomic(
 846                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 847                         hwsim_send_ps_poll, data);
 848                 local_bh_enable();
 849                 return 0;
 850         }
 851         old_ps = data->ps;
 852         data->ps = val;
 853
 854         local_bh_disable();
 855         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 856                 ieee80211_iterate_active_interfaces_atomic(
 857                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 858                         hwsim_send_nullfunc_ps, data);
 859         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 860                 ieee80211_iterate_active_interfaces_atomic(
 861                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 862                         hwsim_send_nullfunc_no_ps, data);
 863         }
 864         local_bh_enable();
 865
 866         return 0;
 867 }
 868
 869 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 870                          "%llu\n");
 871
 872 static int hwsim_write_simulate_radar(void *dat, u64 val)
 873 {
 874         struct mac80211_hwsim_data *data = dat;
 875
 876         ieee80211_radar_detected(data->hw);
 877
 878         return 0;
 879 }
 880
 881 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
 882                          hwsim_write_simulate_radar, "%llu\n");
 883
 884 static int hwsim_fops_group_read(void *dat, u64 *val)
 885 {
 886         struct mac80211_hwsim_data *data = dat;
 887         *val = data->group;
 888         return 0;
 889 }
 890
 891 static int hwsim_fops_group_write(void *dat, u64 val)
 892 {
 893         struct mac80211_hwsim_data *data = dat;
 894         data->group = val;
 895         return 0;
 896 }
 897
 898 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
 899                          hwsim_fops_group_read, hwsim_fops_group_write,
 900                          "%llx\n");
 901
 902 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 903                                         struct net_device *dev)
 904 {
 905         /* TODO: allow packet injection */
 906         dev_kfree_skb(skb);
 907         return NETDEV_TX_OK;
 908 }
 909
 910 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 911 {
 912         return ktime_to_us(ktime_get_real());
 913 }
 914
 915 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 916 {
 917         u64 now = mac80211_hwsim_get_tsf_raw();
 918         return cpu_to_le64(now + data->tsf_offset);
 919 }
 920
 921 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 922                                   struct ieee80211_vif *vif)
 923 {
 924         struct mac80211_hwsim_data *data = hw->priv;
 925         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 926 }
 927
 928 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 929                 struct ieee80211_vif *vif, u64 tsf)
 930 {
 931         struct mac80211_hwsim_data *data = hw->priv;
 932         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 933         u32 bcn_int = data->beacon_int;
 934         u64 delta = abs(tsf - now);
 935
 936         /* adjust after beaconing with new timestamp at old TBTT */
 937         if (tsf > now) {
 938                 data->tsf_offset += delta;
 939                 data->bcn_delta = do_div(delta, bcn_int);
 940         } else {
 941                 data->tsf_offset -= delta;
 942                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 943         }
 944 }
 945
 946 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 947                                       struct sk_buff *tx_skb,
 948                                       struct ieee80211_channel *chan)
 949 {
 950         struct mac80211_hwsim_data *data = hw->priv;
 951         struct sk_buff *skb;
 952         struct hwsim_radiotap_hdr *hdr;
 953         u16 flags, bitrate;
 954         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 955         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 956
 957         if (!txrate)
 958                 bitrate = 0;
 959         else
 960                 bitrate = txrate->bitrate;
 961
 962         if (!netif_running(hwsim_mon))
 963                 return;
 964
 965         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 966         if (skb == NULL)
 967                 return;
 968
 969         hdr = skb_push(skb, sizeof(*hdr));
 970         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 971         hdr->hdr.it_pad = 0;
 972         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 973         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 974                                           (1 << IEEE80211_RADIOTAP_RATE) |
 975                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 976                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 977         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 978         hdr->rt_flags = 0;
 979         hdr->rt_rate = bitrate / 5;
 980         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 981         flags = IEEE80211_CHAN_2GHZ;
 982         if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
 983                 flags |= IEEE80211_CHAN_OFDM;
 984         else
 985                 flags |= IEEE80211_CHAN_CCK;
 986         hdr->rt_chbitmask = cpu_to_le16(flags);
 987
 988         skb->dev = hwsim_mon;
 989         skb_reset_mac_header(skb);
 990         skb->ip_summed = CHECKSUM_UNNECESSARY;
 991         skb->pkt_type = PACKET_OTHERHOST;
 992         skb->protocol = htons(ETH_P_802_2);
 993         memset(skb->cb, 0, sizeof(skb->cb));
 994         netif_rx(skb);
 995 }
 996
 997
 998 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 999                                        const u8 *addr)
1000 {
1001         struct sk_buff *skb;
1002         struct hwsim_radiotap_ack_hdr *hdr;
1003         u16 flags;
1004         struct ieee80211_hdr *hdr11;
1005
1006         if (!netif_running(hwsim_mon))
1007                 return;
1008
1009         skb = dev_alloc_skb(100);
1010         if (skb == NULL)
1011                 return;
1012
1013         hdr = skb_put(skb, sizeof(*hdr));
1014         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
1015         hdr->hdr.it_pad = 0;
1016         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
1017         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
1018                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
1019         hdr->rt_flags = 0;
1020         hdr->pad = 0;
1021         hdr->rt_channel = cpu_to_le16(chan->center_freq);
1022         flags = IEEE80211_CHAN_2GHZ;
1023         hdr->rt_chbitmask = cpu_to_le16(flags);
1024
1025         hdr11 = skb_put(skb, 10);
1026         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1027                                            IEEE80211_STYPE_ACK);
1028         hdr11->duration_id = cpu_to_le16(0);
1029         memcpy(hdr11->addr1, addr, ETH_ALEN);
1030
1031         skb->dev = hwsim_mon;
1032         skb_reset_mac_header(skb);
1033         skb->ip_summed = CHECKSUM_UNNECESSARY;
1034         skb->pkt_type = PACKET_OTHERHOST;
1035         skb->protocol = htons(ETH_P_802_2);
1036         memset(skb->cb, 0, sizeof(skb->cb));
1037         netif_rx(skb);
1038 }
1039
1040 struct mac80211_hwsim_addr_match_data {
1041         u8 addr[ETH_ALEN];
1042         bool ret;
1043 };
1044
1045 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
1046                                      struct ieee80211_vif *vif)
1047 {
1048         struct mac80211_hwsim_addr_match_data *md = data;
1049
1050         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
1051                 md->ret = true;
1052 }
1053
1054 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
1055                                       const u8 *addr)
1056 {
1057         struct mac80211_hwsim_addr_match_data md = {
1058                 .ret = false,
1059         };
1060
1061         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
1062                 return true;
1063
1064         memcpy(md.addr, addr, ETH_ALEN);
1065
1066         ieee80211_iterate_active_interfaces_atomic(data->hw,
1067                                                    IEEE80211_IFACE_ITER_NORMAL,
1068                                                    mac80211_hwsim_addr_iter,
1069                                                    &md);
1070
1071         return md.ret;
1072 }
1073
1074 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
1075                            struct sk_buff *skb)
1076 {
1077         switch (data->ps) {
1078         case PS_DISABLED:
1079                 return true;
1080         case PS_ENABLED:
1081                 return false;
1082         case PS_AUTO_POLL:
1083                 /* TODO: accept (some) Beacons by default and other frames only
1084                  * if pending PS-Poll has been sent */
1085                 return true;
1086         case PS_MANUAL_POLL:
1087                 /* Allow unicast frames to own address if there is a pending
1088                  * PS-Poll */
1089                 if (data->ps_poll_pending &&
1090                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
1091                         data->ps_poll_pending = false;
1092                         return true;
1093                 }
1094                 return false;
1095         }
1096
1097         return true;
1098 }
1099
1100 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
1101                                   struct sk_buff *skb, int portid)
1102 {
1103         struct net *net;
1104         bool found = false;
1105         int res = -ENOENT;
1106
1107         rcu_read_lock();
1108         for_each_net_rcu(net) {
1109                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
1110                         res = genlmsg_unicast(net, skb, portid);
1111                         found = true;
1112                         break;
1113                 }
1114         }
1115         rcu_read_unlock();
1116
1117         if (!found)
1118                 nlmsg_free(skb);
1119
1120         return res;
1121 }
1122
1123 static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
1124                                          const u8 *addr, bool add)
1125 {
1126         struct mac80211_hwsim_data *data = hw->priv;
1127         u32 _portid = READ_ONCE(data->wmediumd);
1128         struct sk_buff *skb;
1129         void *msg_head;
1130
1131         if (!_portid && !hwsim_virtio_enabled)
1132                 return;
1133
1134         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1135         if (!skb)
1136                 return;
1137
1138         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1139                                add ? HWSIM_CMD_ADD_MAC_ADDR :
1140                                      HWSIM_CMD_DEL_MAC_ADDR);
1141         if (!msg_head) {
1142                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1143                 goto nla_put_failure;
1144         }
1145
1146         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1147                     ETH_ALEN, data->addresses[1].addr))
1148                 goto nla_put_failure;
1149
1150         if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
1151                 goto nla_put_failure;
1152
1153         genlmsg_end(skb, msg_head);
1154
1155         if (hwsim_virtio_enabled)
1156                 hwsim_tx_virtio(data, skb);
1157         else
1158                 hwsim_unicast_netgroup(data, skb, _portid);
1159         return;
1160 nla_put_failure:
1161         nlmsg_free(skb);
1162 }
1163
1164 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1165 {
1166         u16 result = 0;
1167
1168         if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1169                 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1170         if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1171                 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1172         if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1173                 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1174         if (rate->flags & IEEE80211_TX_RC_MCS)
1175                 result |= MAC80211_HWSIM_TX_RC_MCS;
1176         if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1177                 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1178         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1179                 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1180         if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1181                 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1182         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1183                 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1184         if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1185                 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1186         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1187                 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1188         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1189                 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1190
1191         return result;
1192 }
1193
1194 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1195                                        struct sk_buff *my_skb,
1196                                        int dst_portid,
1197                                        struct ieee80211_channel *channel)
1198 {
1199         struct sk_buff *skb;
1200         struct mac80211_hwsim_data *data = hw->priv;
1201         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1202         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1203         void *msg_head;
1204         unsigned int hwsim_flags = 0;
1205         int i;
1206         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1207         struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1208         uintptr_t cookie;
1209
1210         if (data->ps != PS_DISABLED)
1211                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1212         /* If the queue contains MAX_QUEUE skb's drop some */
1213         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1214                 /* Droping until WARN_QUEUE level */
1215                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1216                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1217                         data->tx_dropped++;
1218                 }
1219         }
1220
1221         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1222         if (skb == NULL)
1223                 goto nla_put_failure;
1224
1225         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1226                                HWSIM_CMD_FRAME);
1227         if (msg_head == NULL) {
1228                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1229                 goto nla_put_failure;
1230         }
1231
1232         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1233                     ETH_ALEN, data->addresses[1].addr))
1234                 goto nla_put_failure;
1235
1236         /* We get the skb->data */
1237         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1238                 goto nla_put_failure;
1239
1240         /* We get the flags for this transmission, and we translate them to
1241            wmediumd flags  */
1242
1243         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1244                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1245
1246         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1247                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1248
1249         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1250                 goto nla_put_failure;
1251
1252         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, channel->center_freq))
1253                 goto nla_put_failure;
1254
1255         /* We get the tx control (rate and retries) info*/
1256
1257         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1258                 tx_attempts[i].idx = info->status.rates[i].idx;
1259                 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1260                 tx_attempts[i].count = info->status.rates[i].count;
1261                 tx_attempts_flags[i].flags =
1262                                 trans_tx_rate_flags_ieee2hwsim(
1263                                                 &info->status.rates[i]);
1264         }
1265
1266         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1267                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1268                     tx_attempts))
1269                 goto nla_put_failure;
1270
1271         if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1272                     sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1273                     tx_attempts_flags))
1274                 goto nla_put_failure;
1275
1276         /* We create a cookie to identify this skb */
1277         cookie = atomic_inc_return(&data->pending_cookie);
1278         info->rate_driver_data[0] = (void *)cookie;
1279         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1280                 goto nla_put_failure;
1281
1282         genlmsg_end(skb, msg_head);
1283
1284         if (hwsim_virtio_enabled) {
1285                 if (hwsim_tx_virtio(data, skb))
1286                         goto err_free_txskb;
1287         } else {
1288                 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1289                         goto err_free_txskb;
1290         }
1291
1292         /* Enqueue the packet */
1293         skb_queue_tail(&data->pending, my_skb);
1294         data->tx_pkts++;
1295         data->tx_bytes += my_skb->len;
1296         return;
1297
1298 nla_put_failure:
1299         nlmsg_free(skb);
1300 err_free_txskb:
1301         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1302         ieee80211_free_txskb(hw, my_skb);
1303         data->tx_failed++;
1304 }
1305
1306 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1307                                struct ieee80211_channel *c2)
1308 {
1309         if (!c1 || !c2)
1310                 return false;
1311
1312         return c1->center_freq == c2->center_freq;
1313 }
1314
1315 struct tx_iter_data {
1316         struct ieee80211_channel *channel;
1317         bool receive;
1318 };
1319
1320 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1321                                    struct ieee80211_vif *vif)
1322 {
1323         struct tx_iter_data *data = _data;
1324
1325         if (!vif->chanctx_conf)
1326                 return;
1327
1328         if (!hwsim_chans_compat(data->channel,
1329                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1330                 return;
1331
1332         data->receive = true;
1333 }
1334
1335 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1336 {
1337         /*
1338          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1339          * e.g. like this:
1340          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1341          * (but you should use a valid OUI, not that)
1342          *
1343          * If anyone wants to 'donate' a radiotap OUI/subns code
1344          * please send a patch removing this #ifdef and changing
1345          * the values accordingly.
1346          */
1347 #ifdef HWSIM_RADIOTAP_OUI
1348         struct ieee80211_vendor_radiotap *rtap;
1349
1350         /*
1351          * Note that this code requires the headroom in the SKB
1352          * that was allocated earlier.
1353          */
1354         rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1355         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1356         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1357         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1358         rtap->subns = 127;
1359
1360         /*
1361          * Radiotap vendor namespaces can (and should) also be
1362          * split into fields by using the standard radiotap
1363          * presence bitmap mechanism. Use just BIT(0) here for
1364          * the presence bitmap.
1365          */
1366         rtap->present = BIT(0);
1367         /* We have 8 bytes of (dummy) data */
1368         rtap->len = 8;
1369         /* For testing, also require it to be aligned */
1370         rtap->align = 8;
1371         /* And also test that padding works, 4 bytes */
1372         rtap->pad = 4;
1373         /* push the data */
1374         memcpy(rtap->data, "ABCDEFGH", 8);
1375         /* make sure to clear padding, mac80211 doesn't */
1376         memset(rtap->data + 8, 0, 4);
1377
1378         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1379 #endif
1380 }
1381
1382 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1383                                           struct sk_buff *skb,
1384                                           struct ieee80211_channel *chan)
1385 {
1386         struct mac80211_hwsim_data *data = hw->priv, *data2;
1387         bool ack = false;
1388         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1389         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1390         struct ieee80211_rx_status rx_status;
1391         u64 now;
1392
1393         memset(&rx_status, 0, sizeof(rx_status));
1394         rx_status.flag |= RX_FLAG_MACTIME_START;
1395         rx_status.freq = chan->center_freq;
1396         rx_status.freq_offset = chan->freq_offset ? 1 : 0;
1397         rx_status.band = chan->band;
1398         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1399                 rx_status.rate_idx =
1400                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1401                 rx_status.nss =
1402                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1403                 rx_status.encoding = RX_ENC_VHT;
1404         } else {
1405                 rx_status.rate_idx = info->control.rates[0].idx;
1406                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1407                         rx_status.encoding = RX_ENC_HT;
1408         }
1409         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1410                 rx_status.bw = RATE_INFO_BW_40;
1411         else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1412                 rx_status.bw = RATE_INFO_BW_80;
1413         else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1414                 rx_status.bw = RATE_INFO_BW_160;
1415         else
1416                 rx_status.bw = RATE_INFO_BW_20;
1417         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1418                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1419         /* TODO: simulate real signal strength (and optional packet loss) */
1420         rx_status.signal = -50;
1421         if (info->control.vif)
1422                 rx_status.signal += info->control.vif->bss_conf.txpower;
1423
1424         if (data->ps != PS_DISABLED)
1425                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1426
1427         /* release the skb's source info */
1428         skb_orphan(skb);
1429         skb_dst_drop(skb);
1430         skb->mark = 0;
1431         skb_ext_reset(skb);
1432         nf_reset_ct(skb);
1433
1434         /*
1435          * Get absolute mactime here so all HWs RX at the "same time", and
1436          * absolute TX time for beacon mactime so the timestamp matches.
1437          * Giving beacons a different mactime than non-beacons looks messy, but
1438          * it helps the Toffset be exact and a ~10us mactime discrepancy
1439          * probably doesn't really matter.
1440          */
1441         if (ieee80211_is_beacon(hdr->frame_control) ||
1442             ieee80211_is_probe_resp(hdr->frame_control)) {
1443                 rx_status.boottime_ns = ktime_get_boottime_ns();
1444                 now = data->abs_bcn_ts;
1445         } else {
1446                 now = mac80211_hwsim_get_tsf_raw();
1447         }
1448
1449         /* Copy skb to all enabled radios that are on the current frequency */
1450         spin_lock(&hwsim_radio_lock);
1451         list_for_each_entry(data2, &hwsim_radios, list) {
1452                 struct sk_buff *nskb;
1453                 struct tx_iter_data tx_iter_data = {
1454                         .receive = false,
1455                         .channel = chan,
1456                 };
1457
1458                 if (data == data2)
1459                         continue;
1460
1461                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1462                     !hwsim_ps_rx_ok(data2, skb))
1463                         continue;
1464
1465                 if (!(data->group & data2->group))
1466                         continue;
1467
1468                 if (data->netgroup != data2->netgroup)
1469                         continue;
1470
1471                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1472                     !hwsim_chans_compat(chan, data2->channel)) {
1473                         ieee80211_iterate_active_interfaces_atomic(
1474                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1475                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1476                         if (!tx_iter_data.receive)
1477                                 continue;
1478                 }
1479
1480                 /*
1481                  * reserve some space for our vendor and the normal
1482                  * radiotap header, since we're copying anyway
1483                  */
1484                 if (skb->len < PAGE_SIZE && paged_rx) {
1485                         struct page *page = alloc_page(GFP_ATOMIC);
1486
1487                         if (!page)
1488                                 continue;
1489
1490                         nskb = dev_alloc_skb(128);
1491                         if (!nskb) {
1492                                 __free_page(page);
1493                                 continue;
1494                         }
1495
1496                         memcpy(page_address(page), skb->data, skb->len);
1497                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1498                 } else {
1499                         nskb = skb_copy(skb, GFP_ATOMIC);
1500                         if (!nskb)
1501                                 continue;
1502                 }
1503
1504                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1505                         ack = true;
1506
1507                 rx_status.mactime = now + data2->tsf_offset;
1508
1509                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1510
1511                 mac80211_hwsim_add_vendor_rtap(nskb);
1512
1513                 data2->rx_pkts++;
1514                 data2->rx_bytes += nskb->len;
1515                 ieee80211_rx_irqsafe(data2->hw, nskb);
1516         }
1517         spin_unlock(&hwsim_radio_lock);
1518
1519         return ack;
1520 }
1521
1522 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1523                               struct ieee80211_tx_control *control,
1524                               struct sk_buff *skb)
1525 {
1526         struct mac80211_hwsim_data *data = hw->priv;
1527         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1528         struct ieee80211_hdr *hdr = (void *)skb->data;
1529         struct ieee80211_chanctx_conf *chanctx_conf;
1530         struct ieee80211_channel *channel;
1531         bool ack;
1532         u32 _portid;
1533
1534         if (WARN_ON(skb->len < 10)) {
1535                 /* Should not happen; just a sanity check for addr1 use */
1536                 ieee80211_free_txskb(hw, skb);
1537                 return;
1538         }
1539
1540         if (!data->use_chanctx) {
1541                 channel = data->channel;
1542         } else if (txi->hw_queue == 4) {
1543                 channel = data->tmp_chan;
1544         } else {
1545                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1546                 if (chanctx_conf)
1547                         channel = chanctx_conf->def.chan;
1548                 else
1549                         channel = NULL;
1550         }
1551
1552         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1553                 ieee80211_free_txskb(hw, skb);
1554                 return;
1555         }
1556
1557         if (data->idle && !data->tmp_chan) {
1558                 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1559                 ieee80211_free_txskb(hw, skb);
1560                 return;
1561         }
1562
1563         if (txi->control.vif)
1564                 hwsim_check_magic(txi->control.vif);
1565         if (control->sta)
1566                 hwsim_check_sta_magic(control->sta);
1567
1568         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1569                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1570                                        txi->control.rates,
1571                                        ARRAY_SIZE(txi->control.rates));
1572
1573         if (skb->len >= 24 + 8 &&
1574             ieee80211_is_probe_resp(hdr->frame_control)) {
1575                 /* fake header transmission time */
1576                 struct ieee80211_mgmt *mgmt;
1577                 struct ieee80211_rate *txrate;
1578                 /* TODO: get MCS */
1579                 int bitrate = 100;
1580                 u64 ts;
1581
1582                 mgmt = (struct ieee80211_mgmt *)skb->data;
1583                 txrate = ieee80211_get_tx_rate(hw, txi);
1584                 if (txrate)
1585                         bitrate = txrate->bitrate;
1586                 ts = mac80211_hwsim_get_tsf_raw();
1587                 mgmt->u.probe_resp.timestamp =
1588                         cpu_to_le64(ts + data->tsf_offset +
1589                                     24 * 8 * 10 / bitrate);
1590         }
1591
1592         mac80211_hwsim_monitor_rx(hw, skb, channel);
1593
1594         /* wmediumd mode check */
1595         _portid = READ_ONCE(data->wmediumd);
1596
1597         if (_portid || hwsim_virtio_enabled)
1598                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid, channel);
1599
1600         /* NO wmediumd detected, perfect medium simulation */
1601         data->tx_pkts++;
1602         data->tx_bytes += skb->len;
1603         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1604
1605         if (ack && skb->len >= 16)
1606                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1607
1608         ieee80211_tx_info_clear_status(txi);
1609
1610         /* frame was transmitted at most favorable rate at first attempt */
1611         txi->control.rates[0].count = 1;
1612         txi->control.rates[1].idx = -1;
1613
1614         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1615                 txi->flags |= IEEE80211_TX_STAT_ACK;
1616         ieee80211_tx_status_irqsafe(hw, skb);
1617 }
1618
1619
1620 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1621 {
1622         struct mac80211_hwsim_data *data = hw->priv;
1623         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1624         data->started = true;
1625         return 0;
1626 }
1627
1628
1629 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1630 {
1631         struct mac80211_hwsim_data *data = hw->priv;
1632
1633         data->started = false;
1634         hrtimer_cancel(&data->beacon_timer);
1635
1636         while (!skb_queue_empty(&data->pending))
1637                 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1638
1639         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1640 }
1641
1642
1643 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1644                                         struct ieee80211_vif *vif)
1645 {
1646         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1647                   __func__, ieee80211_vif_type_p2p(vif),
1648                   vif->addr);
1649         hwsim_set_magic(vif);
1650
1651         if (vif->type != NL80211_IFTYPE_MONITOR)
1652                 mac80211_hwsim_config_mac_nl(hw, vif->addr, true);
1653
1654         vif->cab_queue = 0;
1655         vif->hw_queue[IEEE80211_AC_VO] = 0;
1656         vif->hw_queue[IEEE80211_AC_VI] = 1;
1657         vif->hw_queue[IEEE80211_AC_BE] = 2;
1658         vif->hw_queue[IEEE80211_AC_BK] = 3;
1659
1660         return 0;
1661 }
1662
1663
1664 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1665                                            struct ieee80211_vif *vif,
1666                                            enum nl80211_iftype newtype,
1667                                            bool newp2p)
1668 {
1669         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1670         wiphy_dbg(hw->wiphy,
1671                   "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1672                   __func__, ieee80211_vif_type_p2p(vif),
1673                     newtype, vif->addr);
1674         hwsim_check_magic(vif);
1675
1676         /*
1677          * interface may change from non-AP to AP in
1678          * which case this needs to be set up again
1679          */
1680         vif->cab_queue = 0;
1681
1682         return 0;
1683 }
1684
1685 static void mac80211_hwsim_remove_interface(
1686         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1687 {
1688         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1689                   __func__, ieee80211_vif_type_p2p(vif),
1690                   vif->addr);
1691         hwsim_check_magic(vif);
1692         hwsim_clear_magic(vif);
1693         if (vif->type != NL80211_IFTYPE_MONITOR)
1694                 mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
1695 }
1696
1697 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1698                                     struct sk_buff *skb,
1699                                     struct ieee80211_channel *chan)
1700 {
1701         struct mac80211_hwsim_data *data = hw->priv;
1702         u32 _pid = READ_ONCE(data->wmediumd);
1703
1704         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1705                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1706                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1707                                        txi->control.rates,
1708                                        ARRAY_SIZE(txi->control.rates));
1709         }
1710
1711         mac80211_hwsim_monitor_rx(hw, skb, chan);
1712
1713         if (_pid || hwsim_virtio_enabled)
1714                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid, chan);
1715
1716         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1717         dev_kfree_skb(skb);
1718 }
1719
1720 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1721                                      struct ieee80211_vif *vif)
1722 {
1723         struct mac80211_hwsim_data *data = arg;
1724         struct ieee80211_hw *hw = data->hw;
1725         struct ieee80211_tx_info *info;
1726         struct ieee80211_rate *txrate;
1727         struct ieee80211_mgmt *mgmt;
1728         struct sk_buff *skb;
1729         /* TODO: get MCS */
1730         int bitrate = 100;
1731
1732         hwsim_check_magic(vif);
1733
1734         if (vif->type != NL80211_IFTYPE_AP &&
1735             vif->type != NL80211_IFTYPE_MESH_POINT &&
1736             vif->type != NL80211_IFTYPE_ADHOC &&
1737             vif->type != NL80211_IFTYPE_OCB)
1738                 return;
1739
1740         skb = ieee80211_beacon_get(hw, vif);
1741         if (skb == NULL)
1742                 return;
1743         info = IEEE80211_SKB_CB(skb);
1744         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1745                 ieee80211_get_tx_rates(vif, NULL, skb,
1746                                        info->control.rates,
1747                                        ARRAY_SIZE(info->control.rates));
1748
1749         txrate = ieee80211_get_tx_rate(hw, info);
1750         if (txrate)
1751                 bitrate = txrate->bitrate;
1752
1753         mgmt = (struct ieee80211_mgmt *) skb->data;
1754         /* fake header transmission time */
1755         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1756         if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
1757                 struct ieee80211_ext *ext = (void *) mgmt;
1758
1759                 ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
1760                                                           data->tsf_offset +
1761                                                           10 * 8 * 10 /
1762                                                           bitrate);
1763         } else {
1764                 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1765                                                        data->tsf_offset +
1766                                                        24 * 8 * 10 /
1767                                                        bitrate);
1768         }
1769
1770         mac80211_hwsim_tx_frame(hw, skb,
1771                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1772
1773         while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
1774                 mac80211_hwsim_tx_frame(hw, skb,
1775                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1776         }
1777
1778         if (vif->csa_active && ieee80211_beacon_cntdwn_is_complete(vif))
1779                 ieee80211_csa_finish(vif);
1780 }
1781
1782 static enum hrtimer_restart
1783 mac80211_hwsim_beacon(struct hrtimer *timer)
1784 {
1785         struct mac80211_hwsim_data *data =
1786                 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1787         struct ieee80211_hw *hw = data->hw;
1788         u64 bcn_int = data->beacon_int;
1789
1790         if (!data->started)
1791                 return HRTIMER_NORESTART;
1792
1793         ieee80211_iterate_active_interfaces_atomic(
1794                 hw, IEEE80211_IFACE_ITER_NORMAL,
1795                 mac80211_hwsim_beacon_tx, data);
1796
1797         /* beacon at new TBTT + beacon interval */
1798         if (data->bcn_delta) {
1799                 bcn_int -= data->bcn_delta;
1800                 data->bcn_delta = 0;
1801         }
1802         hrtimer_forward_now(&data->beacon_timer,
1803                             ns_to_ktime(bcn_int * NSEC_PER_USEC));
1804         return HRTIMER_RESTART;
1805 }
1806
1807 static const char * const hwsim_chanwidths[] = {
1808         [NL80211_CHAN_WIDTH_5] = "ht5",
1809         [NL80211_CHAN_WIDTH_10] = "ht10",
1810         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1811         [NL80211_CHAN_WIDTH_20] = "ht20",
1812         [NL80211_CHAN_WIDTH_40] = "ht40",
1813         [NL80211_CHAN_WIDTH_80] = "vht80",
1814         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1815         [NL80211_CHAN_WIDTH_160] = "vht160",
1816         [NL80211_CHAN_WIDTH_1] = "1MHz",
1817         [NL80211_CHAN_WIDTH_2] = "2MHz",
1818         [NL80211_CHAN_WIDTH_4] = "4MHz",
1819         [NL80211_CHAN_WIDTH_8] = "8MHz",
1820         [NL80211_CHAN_WIDTH_16] = "16MHz",
1821 };
1822
1823 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1824 {
1825         struct mac80211_hwsim_data *data = hw->priv;
1826         struct ieee80211_conf *conf = &hw->conf;
1827         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1828                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1829                 [IEEE80211_SMPS_OFF] = "off",
1830                 [IEEE80211_SMPS_STATIC] = "static",
1831                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1832         };
1833         int idx;
1834
1835         if (conf->chandef.chan)
1836                 wiphy_dbg(hw->wiphy,
1837                           "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1838                           __func__,
1839                           conf->chandef.chan->center_freq,
1840                           conf->chandef.center_freq1,
1841                           conf->chandef.center_freq2,
1842                           hwsim_chanwidths[conf->chandef.width],
1843                           !!(conf->flags & IEEE80211_CONF_IDLE),
1844                           !!(conf->flags & IEEE80211_CONF_PS),
1845                           smps_modes[conf->smps_mode]);
1846         else
1847                 wiphy_dbg(hw->wiphy,
1848                           "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1849                           __func__,
1850                           !!(conf->flags & IEEE80211_CONF_IDLE),
1851                           !!(conf->flags & IEEE80211_CONF_PS),
1852                           smps_modes[conf->smps_mode]);
1853
1854         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1855
1856         WARN_ON(conf->chandef.chan && data->use_chanctx);
1857
1858         mutex_lock(&data->mutex);
1859         if (data->scanning && conf->chandef.chan) {
1860                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1861                         if (data->survey_data[idx].channel == data->channel) {
1862                                 data->survey_data[idx].start =
1863                                         data->survey_data[idx].next_start;
1864                                 data->survey_data[idx].end = jiffies;
1865                                 break;
1866                         }
1867                 }
1868
1869                 data->channel = conf->chandef.chan;
1870
1871                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1872                         if (data->survey_data[idx].channel &&
1873                             data->survey_data[idx].channel != data->channel)
1874                                 continue;
1875                         data->survey_data[idx].channel = data->channel;
1876                         data->survey_data[idx].next_start = jiffies;
1877                         break;
1878                 }
1879         } else {
1880                 data->channel = conf->chandef.chan;
1881         }
1882         mutex_unlock(&data->mutex);
1883
1884         if (!data->started || !data->beacon_int)
1885                 hrtimer_cancel(&data->beacon_timer);
1886         else if (!hrtimer_is_queued(&data->beacon_timer)) {
1887                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1888                 u32 bcn_int = data->beacon_int;
1889                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1890
1891                 hrtimer_start(&data->beacon_timer,
1892                               ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1893                               HRTIMER_MODE_REL_SOFT);
1894         }
1895
1896         return 0;
1897 }
1898
1899
1900 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1901                                             unsigned int changed_flags,
1902                                             unsigned int *total_flags,u64 multicast)
1903 {
1904         struct mac80211_hwsim_data *data = hw->priv;
1905
1906         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1907
1908         data->rx_filter = 0;
1909         if (*total_flags & FIF_ALLMULTI)
1910                 data->rx_filter |= FIF_ALLMULTI;
1911         if (*total_flags & FIF_MCAST_ACTION)
1912                 data->rx_filter |= FIF_MCAST_ACTION;
1913
1914         *total_flags = data->rx_filter;
1915 }
1916
1917 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1918                                        struct ieee80211_vif *vif)
1919 {
1920         unsigned int *count = data;
1921         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1922
1923         if (vp->bcn_en)
1924                 (*count)++;
1925 }
1926
1927 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1928                                             struct ieee80211_vif *vif,
1929                                             struct ieee80211_bss_conf *info,
1930                                             u32 changed)
1931 {
1932         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1933         struct mac80211_hwsim_data *data = hw->priv;
1934
1935         hwsim_check_magic(vif);
1936
1937         wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1938                   __func__, changed, vif->addr);
1939
1940         if (changed & BSS_CHANGED_BSSID) {
1941                 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1942                           __func__, info->bssid);
1943                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1944         }
1945
1946         if (changed & BSS_CHANGED_ASSOC) {
1947                 wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1948                           info->assoc, info->aid);
1949                 vp->assoc = info->assoc;
1950                 vp->aid = info->aid;
1951         }
1952
1953         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1954                 wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1955                           info->enable_beacon, info->beacon_int);
1956                 vp->bcn_en = info->enable_beacon;
1957                 if (data->started &&
1958                     !hrtimer_is_queued(&data->beacon_timer) &&
1959                     info->enable_beacon) {
1960                         u64 tsf, until_tbtt;
1961                         u32 bcn_int;
1962                         data->beacon_int = info->beacon_int * 1024;
1963                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1964                         bcn_int = data->beacon_int;
1965                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1966
1967                         hrtimer_start(&data->beacon_timer,
1968                                       ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1969                                       HRTIMER_MODE_REL_SOFT);
1970                 } else if (!info->enable_beacon) {
1971                         unsigned int count = 0;
1972                         ieee80211_iterate_active_interfaces_atomic(
1973                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1974                                 mac80211_hwsim_bcn_en_iter, &count);
1975                         wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
1976                                   count);
1977                         if (count == 0) {
1978                                 hrtimer_cancel(&data->beacon_timer);
1979                                 data->beacon_int = 0;
1980                         }
1981                 }
1982         }
1983
1984         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1985                 wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1986                           info->use_cts_prot);
1987         }
1988
1989         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1990                 wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1991                           info->use_short_preamble);
1992         }
1993
1994         if (changed & BSS_CHANGED_ERP_SLOT) {
1995                 wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1996         }
1997
1998         if (changed & BSS_CHANGED_HT) {
1999                 wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
2000                           info->ht_operation_mode);
2001         }
2002
2003         if (changed & BSS_CHANGED_BASIC_RATES) {
2004                 wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
2005                           (unsigned long long) info->basic_rates);
2006         }
2007
2008         if (changed & BSS_CHANGED_TXPOWER)
2009                 wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
2010 }
2011
2012 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
2013                                   struct ieee80211_vif *vif,
2014                                   struct ieee80211_sta *sta)
2015 {
2016         hwsim_check_magic(vif);
2017         hwsim_set_sta_magic(sta);
2018
2019         return 0;
2020 }
2021
2022 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
2023                                      struct ieee80211_vif *vif,
2024                                      struct ieee80211_sta *sta)
2025 {
2026         hwsim_check_magic(vif);
2027         hwsim_clear_sta_magic(sta);
2028
2029         return 0;
2030 }
2031
2032 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
2033                                       struct ieee80211_vif *vif,
2034                                       enum sta_notify_cmd cmd,
2035                                       struct ieee80211_sta *sta)
2036 {
2037         hwsim_check_magic(vif);
2038
2039         switch (cmd) {
2040         case STA_NOTIFY_SLEEP:
2041         case STA_NOTIFY_AWAKE:
2042                 /* TODO: make good use of these flags */
2043                 break;
2044         default:
2045                 WARN(1, "Invalid sta notify: %d\n", cmd);
2046                 break;
2047         }
2048 }
2049
2050 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
2051                                   struct ieee80211_sta *sta,
2052                                   bool set)
2053 {
2054         hwsim_check_sta_magic(sta);
2055         return 0;
2056 }
2057
2058 static int mac80211_hwsim_conf_tx(
2059         struct ieee80211_hw *hw,
2060         struct ieee80211_vif *vif, u16 queue,
2061         const struct ieee80211_tx_queue_params *params)
2062 {
2063         wiphy_dbg(hw->wiphy,
2064                   "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
2065                   __func__, queue,
2066                   params->txop, params->cw_min,
2067                   params->cw_max, params->aifs);
2068         return 0;
2069 }
2070
2071 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
2072                                      struct survey_info *survey)
2073 {
2074         struct mac80211_hwsim_data *hwsim = hw->priv;
2075
2076         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
2077                 return -ENOENT;
2078
2079         mutex_lock(&hwsim->mutex);
2080         survey->channel = hwsim->survey_data[idx].channel;
2081         if (!survey->channel) {
2082                 mutex_unlock(&hwsim->mutex);
2083                 return -ENOENT;
2084         }
2085
2086         /*
2087          * Magically conjured dummy values --- this is only ok for simulated hardware.
2088          *
2089          * A real driver which cannot determine real values noise MUST NOT
2090          * report any, especially not a magically conjured ones :-)
2091          */
2092         survey->filled = SURVEY_INFO_NOISE_DBM |
2093                          SURVEY_INFO_TIME |
2094                          SURVEY_INFO_TIME_BUSY;
2095         survey->noise = -92;
2096         survey->time =
2097                 jiffies_to_msecs(hwsim->survey_data[idx].end -
2098                                  hwsim->survey_data[idx].start);
2099         /* report 12.5% of channel time is used */
2100         survey->time_busy = survey->time/8;
2101         mutex_unlock(&hwsim->mutex);
2102
2103         return 0;
2104 }
2105
2106 #ifdef CONFIG_NL80211_TESTMODE
2107 /*
2108  * This section contains example code for using netlink
2109  * attributes with the testmode command in nl80211.
2110  */
2111
2112 /* These enums need to be kept in sync with userspace */
2113 enum hwsim_testmode_attr {
2114         __HWSIM_TM_ATTR_INVALID = 0,
2115         HWSIM_TM_ATTR_CMD       = 1,
2116         HWSIM_TM_ATTR_PS        = 2,
2117
2118         /* keep last */
2119         __HWSIM_TM_ATTR_AFTER_LAST,
2120         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
2121 };
2122
2123 enum hwsim_testmode_cmd {
2124         HWSIM_TM_CMD_SET_PS             = 0,
2125         HWSIM_TM_CMD_GET_PS             = 1,
2126         HWSIM_TM_CMD_STOP_QUEUES        = 2,
2127         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
2128 };
2129
2130 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
2131         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
2132         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
2133 };
2134
2135 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
2136                                        struct ieee80211_vif *vif,
2137                                        void *data, int len)
2138 {
2139         struct mac80211_hwsim_data *hwsim = hw->priv;
2140         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
2141         struct sk_buff *skb;
2142         int err, ps;
2143
2144         err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
2145                                    hwsim_testmode_policy, NULL);
2146         if (err)
2147                 return err;
2148
2149         if (!tb[HWSIM_TM_ATTR_CMD])
2150                 return -EINVAL;
2151
2152         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
2153         case HWSIM_TM_CMD_SET_PS:
2154                 if (!tb[HWSIM_TM_ATTR_PS])
2155                         return -EINVAL;
2156                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
2157                 return hwsim_fops_ps_write(hwsim, ps);
2158         case HWSIM_TM_CMD_GET_PS:
2159                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
2160                                                 nla_total_size(sizeof(u32)));
2161                 if (!skb)
2162                         return -ENOMEM;
2163                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
2164                         goto nla_put_failure;
2165                 return cfg80211_testmode_reply(skb);
2166         case HWSIM_TM_CMD_STOP_QUEUES:
2167                 ieee80211_stop_queues(hw);
2168                 return 0;
2169         case HWSIM_TM_CMD_WAKE_QUEUES:
2170                 ieee80211_wake_queues(hw);
2171                 return 0;
2172         default:
2173                 return -EOPNOTSUPP;
2174         }
2175
2176  nla_put_failure:
2177         kfree_skb(skb);
2178         return -ENOBUFS;
2179 }
2180 #endif
2181
2182 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
2183                                        struct ieee80211_vif *vif,
2184                                        struct ieee80211_ampdu_params *params)
2185 {
2186         struct ieee80211_sta *sta = params->sta;
2187         enum ieee80211_ampdu_mlme_action action = params->action;
2188         u16 tid = params->tid;
2189
2190         switch (action) {
2191         case IEEE80211_AMPDU_TX_START:
2192                 return IEEE80211_AMPDU_TX_START_IMMEDIATE;
2193         case IEEE80211_AMPDU_TX_STOP_CONT:
2194         case IEEE80211_AMPDU_TX_STOP_FLUSH:
2195         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2196                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
2197                 break;
2198         case IEEE80211_AMPDU_TX_OPERATIONAL:
2199                 break;
2200         case IEEE80211_AMPDU_RX_START:
2201         case IEEE80211_AMPDU_RX_STOP:
2202                 break;
2203         default:
2204                 return -EOPNOTSUPP;
2205         }
2206
2207         return 0;
2208 }
2209
2210 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2211                                  struct ieee80211_vif *vif,
2212                                  u32 queues, bool drop)
2213 {
2214         /* Not implemented, queues only on kernel side */
2215 }
2216
2217 static void hw_scan_work(struct work_struct *work)
2218 {
2219         struct mac80211_hwsim_data *hwsim =
2220                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2221         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2222         int dwell, i;
2223
2224         mutex_lock(&hwsim->mutex);
2225         if (hwsim->scan_chan_idx >= req->n_channels) {
2226                 struct cfg80211_scan_info info = {
2227                         .aborted = false,
2228                 };
2229
2230                 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2231                 ieee80211_scan_completed(hwsim->hw, &info);
2232                 hwsim->hw_scan_request = NULL;
2233                 hwsim->hw_scan_vif = NULL;
2234                 hwsim->tmp_chan = NULL;
2235                 mutex_unlock(&hwsim->mutex);
2236                 mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
2237                                              false);
2238                 return;
2239         }
2240
2241         wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2242                   req->channels[hwsim->scan_chan_idx]->center_freq);
2243
2244         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2245         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2246                                       IEEE80211_CHAN_RADAR) ||
2247             !req->n_ssids) {
2248                 dwell = 120;
2249         } else {
2250                 dwell = 30;
2251                 /* send probes */
2252                 for (i = 0; i < req->n_ssids; i++) {
2253                         struct sk_buff *probe;
2254                         struct ieee80211_mgmt *mgmt;
2255
2256                         probe = ieee80211_probereq_get(hwsim->hw,
2257                                                        hwsim->scan_addr,
2258                                                        req->ssids[i].ssid,
2259                                                        req->ssids[i].ssid_len,
2260                                                        req->ie_len);
2261                         if (!probe)
2262                                 continue;
2263
2264                         mgmt = (struct ieee80211_mgmt *) probe->data;
2265                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2266                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2267
2268                         if (req->ie_len)
2269                                 skb_put_data(probe, req->ie, req->ie_len);
2270
2271                         rcu_read_lock();
2272                         if (!ieee80211_tx_prepare_skb(hwsim->hw,
2273                                                       hwsim->hw_scan_vif,
2274                                                       probe,
2275                                                       hwsim->tmp_chan->band,
2276                                                       NULL)) {
2277                                 rcu_read_unlock();
2278                                 kfree_skb(probe);
2279                                 continue;
2280                         }
2281
2282                         local_bh_disable();
2283                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2284                                                 hwsim->tmp_chan);
2285                         rcu_read_unlock();
2286                         local_bh_enable();
2287                 }
2288         }
2289         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2290                                      msecs_to_jiffies(dwell));
2291         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2292         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2293         hwsim->survey_data[hwsim->scan_chan_idx].end =
2294                 jiffies + msecs_to_jiffies(dwell);
2295         hwsim->scan_chan_idx++;
2296         mutex_unlock(&hwsim->mutex);
2297 }
2298
2299 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2300                                   struct ieee80211_vif *vif,
2301                                   struct ieee80211_scan_request *hw_req)
2302 {
2303         struct mac80211_hwsim_data *hwsim = hw->priv;
2304         struct cfg80211_scan_request *req = &hw_req->req;
2305
2306         mutex_lock(&hwsim->mutex);
2307         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2308                 mutex_unlock(&hwsim->mutex);
2309                 return -EBUSY;
2310         }
2311         hwsim->hw_scan_request = req;
2312         hwsim->hw_scan_vif = vif;
2313         hwsim->scan_chan_idx = 0;
2314         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2315                 get_random_mask_addr(hwsim->scan_addr,
2316                                      hw_req->req.mac_addr,
2317                                      hw_req->req.mac_addr_mask);
2318         else
2319                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2320         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2321         mutex_unlock(&hwsim->mutex);
2322
2323         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2324         wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2325
2326         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2327
2328         return 0;
2329 }
2330
2331 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2332                                           struct ieee80211_vif *vif)
2333 {
2334         struct mac80211_hwsim_data *hwsim = hw->priv;
2335         struct cfg80211_scan_info info = {
2336                 .aborted = true,
2337         };
2338
2339         wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2340
2341         cancel_delayed_work_sync(&hwsim->hw_scan);
2342
2343         mutex_lock(&hwsim->mutex);
2344         ieee80211_scan_completed(hwsim->hw, &info);
2345         hwsim->tmp_chan = NULL;
2346         hwsim->hw_scan_request = NULL;
2347         hwsim->hw_scan_vif = NULL;
2348         mutex_unlock(&hwsim->mutex);
2349 }
2350
2351 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2352                                    struct ieee80211_vif *vif,
2353                                    const u8 *mac_addr)
2354 {
2355         struct mac80211_hwsim_data *hwsim = hw->priv;
2356
2357         mutex_lock(&hwsim->mutex);
2358
2359         if (hwsim->scanning) {
2360                 pr_debug("two hwsim sw_scans detected!\n");
2361                 goto out;
2362         }
2363
2364         pr_debug("hwsim sw_scan request, prepping stuff\n");
2365
2366         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2367         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
2368         hwsim->scanning = true;
2369         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2370
2371 out:
2372         mutex_unlock(&hwsim->mutex);
2373 }
2374
2375 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2376                                             struct ieee80211_vif *vif)
2377 {
2378         struct mac80211_hwsim_data *hwsim = hw->priv;
2379
2380         mutex_lock(&hwsim->mutex);
2381
2382         pr_debug("hwsim sw_scan_complete\n");
2383         hwsim->scanning = false;
2384         mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
2385         eth_zero_addr(hwsim->scan_addr);
2386
2387         mutex_unlock(&hwsim->mutex);
2388 }
2389
2390 static void hw_roc_start(struct work_struct *work)
2391 {
2392         struct mac80211_hwsim_data *hwsim =
2393                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2394
2395         mutex_lock(&hwsim->mutex);
2396
2397         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2398         hwsim->tmp_chan = hwsim->roc_chan;
2399         ieee80211_ready_on_channel(hwsim->hw);
2400
2401         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2402                                      msecs_to_jiffies(hwsim->roc_duration));
2403
2404         mutex_unlock(&hwsim->mutex);
2405 }
2406
2407 static void hw_roc_done(struct work_struct *work)
2408 {
2409         struct mac80211_hwsim_data *hwsim =
2410                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2411
2412         mutex_lock(&hwsim->mutex);
2413         ieee80211_remain_on_channel_expired(hwsim->hw);
2414         hwsim->tmp_chan = NULL;
2415         mutex_unlock(&hwsim->mutex);
2416
2417         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2418 }
2419
2420 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2421                               struct ieee80211_vif *vif,
2422                               struct ieee80211_channel *chan,
2423                               int duration,
2424                               enum ieee80211_roc_type type)
2425 {
2426         struct mac80211_hwsim_data *hwsim = hw->priv;
2427
2428         mutex_lock(&hwsim->mutex);
2429         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2430                 mutex_unlock(&hwsim->mutex);
2431                 return -EBUSY;
2432         }
2433
2434         hwsim->roc_chan = chan;
2435         hwsim->roc_duration = duration;
2436         mutex_unlock(&hwsim->mutex);
2437
2438         wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2439                   chan->center_freq, duration);
2440         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2441
2442         return 0;
2443 }
2444
2445 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2446                                struct ieee80211_vif *vif)
2447 {
2448         struct mac80211_hwsim_data *hwsim = hw->priv;
2449
2450         cancel_delayed_work_sync(&hwsim->roc_start);
2451         cancel_delayed_work_sync(&hwsim->roc_done);
2452
2453         mutex_lock(&hwsim->mutex);
2454         hwsim->tmp_chan = NULL;
2455         mutex_unlock(&hwsim->mutex);
2456
2457         wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2458
2459         return 0;
2460 }
2461
2462 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2463                                       struct ieee80211_chanctx_conf *ctx)
2464 {
2465         struct mac80211_hwsim_data *hwsim = hw->priv;
2466
2467         mutex_lock(&hwsim->mutex);
2468         hwsim->chanctx = ctx;
2469         mutex_unlock(&hwsim->mutex);
2470         hwsim_set_chanctx_magic(ctx);
2471         wiphy_dbg(hw->wiphy,
2472                   "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2473                   ctx->def.chan->center_freq, ctx->def.width,
2474                   ctx->def.center_freq1, ctx->def.center_freq2);
2475         return 0;
2476 }
2477
2478 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2479                                           struct ieee80211_chanctx_conf *ctx)
2480 {
2481         struct mac80211_hwsim_data *hwsim = hw->priv;
2482
2483         mutex_lock(&hwsim->mutex);
2484         hwsim->chanctx = NULL;
2485         mutex_unlock(&hwsim->mutex);
2486         wiphy_dbg(hw->wiphy,
2487                   "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2488                   ctx->def.chan->center_freq, ctx->def.width,
2489                   ctx->def.center_freq1, ctx->def.center_freq2);
2490         hwsim_check_chanctx_magic(ctx);
2491         hwsim_clear_chanctx_magic(ctx);
2492 }
2493
2494 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2495                                           struct ieee80211_chanctx_conf *ctx,
2496                                           u32 changed)
2497 {
2498         struct mac80211_hwsim_data *hwsim = hw->priv;
2499
2500         mutex_lock(&hwsim->mutex);
2501         hwsim->chanctx = ctx;
2502         mutex_unlock(&hwsim->mutex);
2503         hwsim_check_chanctx_magic(ctx);
2504         wiphy_dbg(hw->wiphy,
2505                   "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2506                   ctx->def.chan->center_freq, ctx->def.width,
2507                   ctx->def.center_freq1, ctx->def.center_freq2);
2508 }
2509
2510 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2511                                              struct ieee80211_vif *vif,
2512                                              struct ieee80211_chanctx_conf *ctx)
2513 {
2514         hwsim_check_magic(vif);
2515         hwsim_check_chanctx_magic(ctx);
2516
2517         return 0;
2518 }
2519
2520 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2521                                                 struct ieee80211_vif *vif,
2522                                                 struct ieee80211_chanctx_conf *ctx)
2523 {
2524         hwsim_check_magic(vif);
2525         hwsim_check_chanctx_magic(ctx);
2526 }
2527
2528 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2529         "tx_pkts_nic",
2530         "tx_bytes_nic",
2531         "rx_pkts_nic",
2532         "rx_bytes_nic",
2533         "d_tx_dropped",
2534         "d_tx_failed",
2535         "d_ps_mode",
2536         "d_group",
2537 };
2538
2539 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2540
2541 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2542                                           struct ieee80211_vif *vif,
2543                                           u32 sset, u8 *data)
2544 {
2545         if (sset == ETH_SS_STATS)
2546                 memcpy(data, mac80211_hwsim_gstrings_stats,
2547                        sizeof(mac80211_hwsim_gstrings_stats));
2548 }
2549
2550 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2551                                             struct ieee80211_vif *vif, int sset)
2552 {
2553         if (sset == ETH_SS_STATS)
2554                 return MAC80211_HWSIM_SSTATS_LEN;
2555         return 0;
2556 }
2557
2558 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2559                                         struct ieee80211_vif *vif,
2560                                         struct ethtool_stats *stats, u64 *data)
2561 {
2562         struct mac80211_hwsim_data *ar = hw->priv;
2563         int i = 0;
2564
2565         data[i++] = ar->tx_pkts;
2566         data[i++] = ar->tx_bytes;
2567         data[i++] = ar->rx_pkts;
2568         data[i++] = ar->rx_bytes;
2569         data[i++] = ar->tx_dropped;
2570         data[i++] = ar->tx_failed;
2571         data[i++] = ar->ps;
2572         data[i++] = ar->group;
2573
2574         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2575 }
2576
2577 static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
2578 {
2579         return 1;
2580 }
2581
2582 #define HWSIM_COMMON_OPS                                        \
2583         .tx = mac80211_hwsim_tx,                                \
2584         .start = mac80211_hwsim_start,                          \
2585         .stop = mac80211_hwsim_stop,                            \
2586         .add_interface = mac80211_hwsim_add_interface,          \
2587         .change_interface = mac80211_hwsim_change_interface,    \
2588         .remove_interface = mac80211_hwsim_remove_interface,    \
2589         .config = mac80211_hwsim_config,                        \
2590         .configure_filter = mac80211_hwsim_configure_filter,    \
2591         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2592         .tx_last_beacon = mac80211_hwsim_tx_last_beacon,        \
2593         .sta_add = mac80211_hwsim_sta_add,                      \
2594         .sta_remove = mac80211_hwsim_sta_remove,                \
2595         .sta_notify = mac80211_hwsim_sta_notify,                \
2596         .set_tim = mac80211_hwsim_set_tim,                      \
2597         .conf_tx = mac80211_hwsim_conf_tx,                      \
2598         .get_survey = mac80211_hwsim_get_survey,                \
2599         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2600         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2601         .flush = mac80211_hwsim_flush,                          \
2602         .get_tsf = mac80211_hwsim_get_tsf,                      \
2603         .set_tsf = mac80211_hwsim_set_tsf,                      \
2604         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2605         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2606         .get_et_strings = mac80211_hwsim_get_et_strings,
2607
2608 static const struct ieee80211_ops mac80211_hwsim_ops = {
2609         HWSIM_COMMON_OPS
2610         .sw_scan_start = mac80211_hwsim_sw_scan,
2611         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2612 };
2613
2614 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2615         HWSIM_COMMON_OPS
2616         .hw_scan = mac80211_hwsim_hw_scan,
2617         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2618         .sw_scan_start = NULL,
2619         .sw_scan_complete = NULL,
2620         .remain_on_channel = mac80211_hwsim_roc,
2621         .cancel_remain_on_channel = mac80211_hwsim_croc,
2622         .add_chanctx = mac80211_hwsim_add_chanctx,
2623         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2624         .change_chanctx = mac80211_hwsim_change_chanctx,
2625         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2626         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2627 };
2628
2629 struct hwsim_new_radio_params {
2630         unsigned int channels;
2631         const char *reg_alpha2;
2632         const struct ieee80211_regdomain *regd;
2633         bool reg_strict;
2634         bool p2p_device;
2635         bool use_chanctx;
2636         bool destroy_on_close;
2637         const char *hwname;
2638         bool no_vif;
2639         const u8 *perm_addr;
2640         u32 iftypes;
2641         u32 *ciphers;
2642         u8 n_ciphers;
2643 };
2644
2645 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2646                                    struct genl_info *info)
2647 {
2648         if (info)
2649                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2650                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2651         else
2652                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2653                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2654 }
2655
2656 static int append_radio_msg(struct sk_buff *skb, int id,
2657                             struct hwsim_new_radio_params *param)
2658 {
2659         int ret;
2660
2661         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2662         if (ret < 0)
2663                 return ret;
2664
2665         if (param->channels) {
2666                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2667                 if (ret < 0)
2668                         return ret;
2669         }
2670
2671         if (param->reg_alpha2) {
2672                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2673                               param->reg_alpha2);
2674                 if (ret < 0)
2675                         return ret;
2676         }
2677
2678         if (param->regd) {
2679                 int i;
2680
2681                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2682                         if (hwsim_world_regdom_custom[i] != param->regd)
2683                                 continue;
2684
2685                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2686                         if (ret < 0)
2687                                 return ret;
2688                         break;
2689                 }
2690         }
2691
2692         if (param->reg_strict) {
2693                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2694                 if (ret < 0)
2695                         return ret;
2696         }
2697
2698         if (param->p2p_device) {
2699                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2700                 if (ret < 0)
2701                         return ret;
2702         }
2703
2704         if (param->use_chanctx) {
2705                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2706                 if (ret < 0)
2707                         return ret;
2708         }
2709
2710         if (param->hwname) {
2711                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2712                               strlen(param->hwname), param->hwname);
2713                 if (ret < 0)
2714                         return ret;
2715         }
2716
2717         return 0;
2718 }
2719
2720 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2721                                   struct hwsim_new_radio_params *param)
2722 {
2723         struct sk_buff *mcast_skb;
2724         void *data;
2725
2726         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2727         if (!mcast_skb)
2728                 return;
2729
2730         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2731                            HWSIM_CMD_NEW_RADIO);
2732         if (!data)
2733                 goto out_err;
2734
2735         if (append_radio_msg(mcast_skb, id, param) < 0)
2736                 goto out_err;
2737
2738         genlmsg_end(mcast_skb, data);
2739
2740         hwsim_mcast_config_msg(mcast_skb, info);
2741         return;
2742
2743 out_err:
2744         nlmsg_free(mcast_skb);
2745 }
2746
2747 static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2748         {
2749                 /* TODO: should we support other types, e.g., P2P?*/
2750                 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2751                               BIT(NL80211_IFTYPE_AP),
2752                 .he_cap = {
2753                         .has_he = true,
2754                         .he_cap_elem = {
2755                                 .mac_cap_info[0] =
2756                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2757                                 .mac_cap_info[1] =
2758                                         IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2759                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2760                                 .mac_cap_info[2] =
2761                                         IEEE80211_HE_MAC_CAP2_BSR |
2762                                         IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2763                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2764                                 .mac_cap_info[3] =
2765                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2766                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2767                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2768                                 .phy_cap_info[1] =
2769                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2770                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2771                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2772                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2773                                 .phy_cap_info[2] =
2774                                         IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2775                                         IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2776                                         IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2777                                         IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2778                                         IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2779
2780                                 /* Leave all the other PHY capability bytes
2781                                  * unset, as DCM, beam forming, RU and PPE
2782                                  * threshold information are not supported
2783                                  */
2784                         },
2785                         .he_mcs_nss_supp = {
2786                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2787                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2788                                 .rx_mcs_160 = cpu_to_le16(0xffff),
2789                                 .tx_mcs_160 = cpu_to_le16(0xffff),
2790                                 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2791                                 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2792                         },
2793                 },
2794         },
2795 #ifdef CONFIG_MAC80211_MESH
2796         {
2797                 /* TODO: should we support other types, e.g., IBSS?*/
2798                 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2799                 .he_cap = {
2800                         .has_he = true,
2801                         .he_cap_elem = {
2802                                 .mac_cap_info[0] =
2803                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2804                                 .mac_cap_info[1] =
2805                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2806                                 .mac_cap_info[2] =
2807                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2808                                 .mac_cap_info[3] =
2809                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2810                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2811                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2812                                 .phy_cap_info[1] =
2813                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2814                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2815                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2816                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2817                                 .phy_cap_info[2] = 0,
2818
2819                                 /* Leave all the other PHY capability bytes
2820                                  * unset, as DCM, beam forming, RU and PPE
2821                                  * threshold information are not supported
2822                                  */
2823                         },
2824                         .he_mcs_nss_supp = {
2825                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2826                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2827                                 .rx_mcs_160 = cpu_to_le16(0xffff),
2828                                 .tx_mcs_160 = cpu_to_le16(0xffff),
2829                                 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2830                                 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2831                         },
2832                 },
2833         },
2834 #endif
2835 };
2836
2837 static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2838         {
2839                 /* TODO: should we support other types, e.g., P2P?*/
2840                 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2841                               BIT(NL80211_IFTYPE_AP),
2842                 .he_cap = {
2843                         .has_he = true,
2844                         .he_cap_elem = {
2845                                 .mac_cap_info[0] =
2846                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2847                                 .mac_cap_info[1] =
2848                                         IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2849                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2850                                 .mac_cap_info[2] =
2851                                         IEEE80211_HE_MAC_CAP2_BSR |
2852                                         IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2853                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2854                                 .mac_cap_info[3] =
2855                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2856                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2857                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2858                                 .phy_cap_info[0] =
2859                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2860                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2861                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2862                                 .phy_cap_info[1] =
2863                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2864                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2865                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2866                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2867                                 .phy_cap_info[2] =
2868                                         IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2869                                         IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2870                                         IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2871                                         IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2872                                         IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2873
2874                                 /* Leave all the other PHY capability bytes
2875                                  * unset, as DCM, beam forming, RU and PPE
2876                                  * threshold information are not supported
2877                                  */
2878                         },
2879                         .he_mcs_nss_supp = {
2880                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2881                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2882                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
2883                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
2884                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2885                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2886                         },
2887                 },
2888         },
2889 #ifdef CONFIG_MAC80211_MESH
2890         {
2891                 /* TODO: should we support other types, e.g., IBSS?*/
2892                 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2893                 .he_cap = {
2894                         .has_he = true,
2895                         .he_cap_elem = {
2896                                 .mac_cap_info[0] =
2897                                         IEEE80211_HE_MAC_CAP0_HTC_HE,
2898                                 .mac_cap_info[1] =
2899                                         IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2900                                 .mac_cap_info[2] =
2901                                         IEEE80211_HE_MAC_CAP2_ACK_EN,
2902                                 .mac_cap_info[3] =
2903                                         IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2904                                         IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2905                                 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2906                                 .phy_cap_info[0] =
2907                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2908                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2909                                         IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2910                                 .phy_cap_info[1] =
2911                                         IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2912                                         IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2913                                         IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2914                                         IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2915                                 .phy_cap_info[2] = 0,
2916
2917                                 /* Leave all the other PHY capability bytes
2918                                  * unset, as DCM, beam forming, RU and PPE
2919                                  * threshold information are not supported
2920                                  */
2921                         },
2922                         .he_mcs_nss_supp = {
2923                                 .rx_mcs_80 = cpu_to_le16(0xfffa),
2924                                 .tx_mcs_80 = cpu_to_le16(0xfffa),
2925                                 .rx_mcs_160 = cpu_to_le16(0xfffa),
2926                                 .tx_mcs_160 = cpu_to_le16(0xfffa),
2927                                 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2928                                 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2929                         },
2930                 },
2931         },
2932 #endif
2933 };
2934
2935 static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2936 {
2937         u16 n_iftype_data;
2938
2939         if (sband->band == NL80211_BAND_2GHZ) {
2940                 n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2941                 sband->iftype_data =
2942                         (struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2943         } else if (sband->band == NL80211_BAND_5GHZ) {
2944                 n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
2945                 sband->iftype_data =
2946                         (struct ieee80211_sband_iftype_data *)he_capa_5ghz;
2947         } else {
2948                 return;
2949         }
2950
2951         sband->n_iftype_data = n_iftype_data;
2952 }
2953
2954 #ifdef CONFIG_MAC80211_MESH
2955 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2956 #else
2957 #define HWSIM_MESH_BIT 0
2958 #endif
2959
2960 #define HWSIM_DEFAULT_IF_LIMIT \
2961         (BIT(NL80211_IFTYPE_STATION) | \
2962          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2963          BIT(NL80211_IFTYPE_AP) | \
2964          BIT(NL80211_IFTYPE_P2P_GO) | \
2965          HWSIM_MESH_BIT)
2966
2967 #define HWSIM_IFTYPE_SUPPORT_MASK \
2968         (BIT(NL80211_IFTYPE_STATION) | \
2969          BIT(NL80211_IFTYPE_AP) | \
2970          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2971          BIT(NL80211_IFTYPE_P2P_GO) | \
2972          BIT(NL80211_IFTYPE_ADHOC) | \
2973          BIT(NL80211_IFTYPE_MESH_POINT) | \
2974          BIT(NL80211_IFTYPE_OCB))
2975
2976 static int mac80211_hwsim_new_radio(struct genl_info *info,
2977                                     struct hwsim_new_radio_params *param)
2978 {
2979         int err;
2980         u8 addr[ETH_ALEN];
2981         struct mac80211_hwsim_data *data;
2982         struct ieee80211_hw *hw;
2983         enum nl80211_band band;
2984         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2985         struct net *net;
2986         int idx, i;
2987         int n_limits = 0;
2988
2989         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2990                 return -EINVAL;
2991
2992         spin_lock_bh(&hwsim_radio_lock);
2993         idx = hwsim_radio_idx++;
2994         spin_unlock_bh(&hwsim_radio_lock);
2995
2996         if (param->use_chanctx)
2997                 ops = &mac80211_hwsim_mchan_ops;
2998         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2999         if (!hw) {
3000                 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
3001                 err = -ENOMEM;
3002                 goto failed;
3003         }
3004
3005         /* ieee80211_alloc_hw_nm may have used a default name */
3006         param->hwname = wiphy_name(hw->wiphy);
3007
3008         if (info)
3009                 net = genl_info_net(info);
3010         else
3011                 net = &init_net;
3012         wiphy_net_set(hw->wiphy, net);
3013
3014         data = hw->priv;
3015         data->hw = hw;
3016
3017         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
3018         if (IS_ERR(data->dev)) {
3019                 printk(KERN_DEBUG
3020                        "mac80211_hwsim: device_create failed (%ld)\n",
3021                        PTR_ERR(data->dev));
3022                 err = -ENOMEM;
3023                 goto failed_drvdata;
3024         }
3025         data->dev->driver = &mac80211_hwsim_driver.driver;
3026         err = device_bind_driver(data->dev);
3027         if (err != 0) {
3028                 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
3029                        err);
3030                 goto failed_bind;
3031         }
3032
3033         skb_queue_head_init(&data->pending);
3034
3035         SET_IEEE80211_DEV(hw, data->dev);
3036         if (!param->perm_addr) {
3037                 eth_zero_addr(addr);
3038                 addr[0] = 0x02;
3039                 addr[3] = idx >> 8;
3040                 addr[4] = idx;
3041                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
3042                 /* Why need here second address ? */
3043                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
3044                 data->addresses[1].addr[0] |= 0x40;
3045                 hw->wiphy->n_addresses = 2;
3046                 hw->wiphy->addresses = data->addresses;
3047                 /* possible address clash is checked at hash table insertion */
3048         } else {
3049                 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
3050                 /* compatibility with automatically generated mac addr */
3051                 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
3052                 hw->wiphy->n_addresses = 2;
3053                 hw->wiphy->addresses = data->addresses;
3054         }
3055
3056         data->channels = param->channels;
3057         data->use_chanctx = param->use_chanctx;
3058         data->idx = idx;
3059         data->destroy_on_close = param->destroy_on_close;
3060         if (info)
3061                 data->portid = info->snd_portid;
3062
3063         /* setup interface limits, only on interface types we support */
3064         if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
3065                 data->if_limits[n_limits].max = 1;
3066                 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
3067                 n_limits++;
3068         }
3069
3070         if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
3071                 data->if_limits[n_limits].max = 2048;
3072                 /*
3073                  * For this case, we may only support a subset of
3074                  * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
3075                  * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
3076                  */
3077                 data->if_limits[n_limits].types =
3078                                         HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
3079                 n_limits++;
3080         }
3081
3082         if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3083                 data->if_limits[n_limits].max = 1;
3084                 data->if_limits[n_limits].types =
3085                                                 BIT(NL80211_IFTYPE_P2P_DEVICE);
3086                 n_limits++;
3087         }
3088
3089         if (data->use_chanctx) {
3090                 hw->wiphy->max_scan_ssids = 255;
3091                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
3092                 hw->wiphy->max_remain_on_channel_duration = 1000;
3093                 data->if_combination.radar_detect_widths = 0;
3094                 data->if_combination.num_different_channels = data->channels;
3095                 data->chanctx = NULL;
3096         } else {
3097                 data->if_combination.num_different_channels = 1;
3098                 data->if_combination.radar_detect_widths =
3099                                         BIT(NL80211_CHAN_WIDTH_5) |
3100                                         BIT(NL80211_CHAN_WIDTH_10) |
3101                                         BIT(NL80211_CHAN_WIDTH_20_NOHT) |
3102                                         BIT(NL80211_CHAN_WIDTH_20) |
3103                                         BIT(NL80211_CHAN_WIDTH_40) |
3104                                         BIT(NL80211_CHAN_WIDTH_80) |
3105                                         BIT(NL80211_CHAN_WIDTH_160);
3106         }
3107
3108         if (!n_limits) {
3109                 err = -EINVAL;
3110                 goto failed_hw;
3111         }
3112
3113         data->if_combination.max_interfaces = 0;
3114         for (i = 0; i < n_limits; i++)
3115                 data->if_combination.max_interfaces +=
3116                         data->if_limits[i].max;
3117
3118         data->if_combination.n_limits = n_limits;
3119         data->if_combination.limits = data->if_limits;
3120
3121         /*
3122          * If we actually were asked to support combinations,
3123          * advertise them - if there's only a single thing like
3124          * only IBSS then don't advertise it as combinations.
3125          */
3126         if (data->if_combination.max_interfaces > 1) {
3127                 hw->wiphy->iface_combinations = &data->if_combination;
3128                 hw->wiphy->n_iface_combinations = 1;
3129         }
3130
3131         if (param->ciphers) {
3132                 memcpy(data->ciphers, param->ciphers,
3133                        param->n_ciphers * sizeof(u32));
3134                 hw->wiphy->cipher_suites = data->ciphers;
3135                 hw->wiphy->n_cipher_suites = param->n_ciphers;
3136         }
3137
3138         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
3139         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
3140         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
3141
3142         hw->queues = 5;
3143         hw->offchannel_tx_hw_queue = 4;
3144
3145         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
3146         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
3147         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
3148         ieee80211_hw_set(hw, QUEUE_CONTROL);
3149         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
3150         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
3151         ieee80211_hw_set(hw, MFP_CAPABLE);
3152         ieee80211_hw_set(hw, SIGNAL_DBM);
3153         ieee80211_hw_set(hw, SUPPORTS_PS);
3154         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
3155         ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
3156         ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
3157         ieee80211_hw_set(hw, TDLS_WIDER_BW);
3158         if (rctbl)
3159                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
3160         ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
3161
3162         hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
3163         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
3164                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3165                             WIPHY_FLAG_AP_UAPSD |
3166                             WIPHY_FLAG_SUPPORTS_5_10_MHZ |
3167                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
3168         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
3169                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
3170                                NL80211_FEATURE_STATIC_SMPS |
3171                                NL80211_FEATURE_DYNAMIC_SMPS |
3172                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
3173         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
3174         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
3175         wiphy_ext_feature_set(hw->wiphy,
3176                               NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
3177         wiphy_ext_feature_set(hw->wiphy,
3178                               NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
3179
3180         hw->wiphy->interface_modes = param->iftypes;
3181
3182         /* ask mac80211 to reserve space for magic */
3183         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
3184         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
3185         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
3186
3187         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
3188                 sizeof(hwsim_channels_2ghz));
3189         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
3190                 sizeof(hwsim_channels_5ghz));
3191         memcpy(data->channels_s1g, hwsim_channels_s1g,
3192                sizeof(hwsim_channels_s1g));
3193         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
3194
3195         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3196                 struct ieee80211_supported_band *sband = &data->bands[band];
3197
3198                 sband->band = band;
3199
3200                 switch (band) {
3201                 case NL80211_BAND_2GHZ:
3202                         sband->channels = data->channels_2ghz;
3203                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
3204                         sband->bitrates = data->rates;
3205                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
3206                         break;
3207                 case NL80211_BAND_5GHZ:
3208                         sband->channels = data->channels_5ghz;
3209                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
3210                         sband->bitrates = data->rates + 4;
3211                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
3212
3213                         sband->vht_cap.vht_supported = true;
3214                         sband->vht_cap.cap =
3215                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
3216                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
3217                                 IEEE80211_VHT_CAP_RXLDPC |
3218                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
3219                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
3220                                 IEEE80211_VHT_CAP_TXSTBC |
3221                                 IEEE80211_VHT_CAP_RXSTBC_4 |
3222                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
3223                         sband->vht_cap.vht_mcs.rx_mcs_map =
3224                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
3225                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
3226                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
3227                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
3228                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
3229                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
3230                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
3231                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
3232                         sband->vht_cap.vht_mcs.tx_mcs_map =
3233                                 sband->vht_cap.vht_mcs.rx_mcs_map;
3234                         break;
3235                 case NL80211_BAND_S1GHZ:
3236                         memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
3237                                sizeof(sband->s1g_cap));
3238                         sband->channels = data->channels_s1g;
3239                         sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
3240                         break;
3241                 default:
3242                         continue;
3243                 }
3244
3245                 sband->ht_cap.ht_supported = true;
3246                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
3247                                     IEEE80211_HT_CAP_GRN_FLD |
3248                                     IEEE80211_HT_CAP_SGI_20 |
3249                                     IEEE80211_HT_CAP_SGI_40 |
3250                                     IEEE80211_HT_CAP_DSSSCCK40;
3251                 sband->ht_cap.ampdu_factor = 0x3;
3252                 sband->ht_cap.ampdu_density = 0x6;
3253                 memset(&sband->ht_cap.mcs, 0,
3254                        sizeof(sband->ht_cap.mcs));
3255                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
3256                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
3257                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
3258
3259                 mac80211_hwsim_he_capab(sband);
3260
3261                 hw->wiphy->bands[band] = sband;
3262         }
3263
3264         /* By default all radios belong to the first group */
3265         data->group = 1;
3266         mutex_init(&data->mutex);
3267
3268         data->netgroup = hwsim_net_get_netgroup(net);
3269         data->wmediumd = hwsim_net_get_wmediumd(net);
3270
3271         /* Enable frame retransmissions for lossy channels */
3272         hw->max_rates = 4;
3273         hw->max_rate_tries = 11;
3274
3275         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3276         hw->wiphy->n_vendor_commands =
3277                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3278         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3279         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3280
3281         if (param->reg_strict)
3282                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3283         if (param->regd) {
3284                 data->regd = param->regd;
3285                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3286                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3287                 /* give the regulatory workqueue a chance to run */
3288                 schedule_timeout_interruptible(1);
3289         }
3290
3291         if (param->no_vif)
3292                 ieee80211_hw_set(hw, NO_AUTO_VIF);
3293
3294         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3295
3296         hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3297                      HRTIMER_MODE_ABS_SOFT);
3298         data->beacon_timer.function = mac80211_hwsim_beacon;
3299
3300         err = ieee80211_register_hw(hw);
3301         if (err < 0) {
3302                 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3303                        err);
3304                 goto failed_hw;
3305         }
3306
3307         wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3308
3309         if (param->reg_alpha2) {
3310                 data->alpha2[0] = param->reg_alpha2[0];
3311                 data->alpha2[1] = param->reg_alpha2[1];
3312                 regulatory_hint(hw->wiphy, param->reg_alpha2);
3313         }
3314
3315         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3316         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3317         debugfs_create_file("group", 0666, data->debugfs, data,
3318                             &hwsim_fops_group);
3319         if (!data->use_chanctx)
3320                 debugfs_create_file("dfs_simulate_radar", 0222,
3321                                     data->debugfs,
3322                                     data, &hwsim_simulate_radar);
3323
3324         spin_lock_bh(&hwsim_radio_lock);
3325         err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3326                                      hwsim_rht_params);
3327         if (err < 0) {
3328                 if (info) {
3329                         GENL_SET_ERR_MSG(info, "perm addr already present");
3330                         NL_SET_BAD_ATTR(info->extack,
3331                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
3332                 }
3333                 spin_unlock_bh(&hwsim_radio_lock);
3334                 goto failed_final_insert;
3335         }
3336
3337         list_add_tail(&data->list, &hwsim_radios);
3338         hwsim_radios_generation++;
3339         spin_unlock_bh(&hwsim_radio_lock);
3340
3341         hwsim_mcast_new_radio(idx, info, param);
3342
3343         return idx;
3344
3345 failed_final_insert:
3346         debugfs_remove_recursive(data->debugfs);
3347         ieee80211_unregister_hw(data->hw);
3348 failed_hw:
3349         device_release_driver(data->dev);
3350 failed_bind:
3351         device_unregister(data->dev);
3352 failed_drvdata:
3353         ieee80211_free_hw(hw);
3354 failed:
3355         return err;
3356 }
3357
3358 static void hwsim_mcast_del_radio(int id, const char *hwname,
3359                                   struct genl_info *info)
3360 {
3361         struct sk_buff *skb;
3362         void *data;
3363         int ret;
3364
3365         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3366         if (!skb)
3367                 return;
3368
3369         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3370                            HWSIM_CMD_DEL_RADIO);
3371         if (!data)
3372                 goto error;
3373
3374         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3375         if (ret < 0)
3376                 goto error;
3377
3378         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3379                       hwname);
3380         if (ret < 0)
3381                 goto error;
3382
3383         genlmsg_end(skb, data);
3384
3385         hwsim_mcast_config_msg(skb, info);
3386
3387         return;
3388
3389 error:
3390         nlmsg_free(skb);
3391 }
3392
3393 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3394                                      const char *hwname,
3395                                      struct genl_info *info)
3396 {
3397         hwsim_mcast_del_radio(data->idx, hwname, info);
3398         debugfs_remove_recursive(data->debugfs);
3399         ieee80211_unregister_hw(data->hw);
3400         device_release_driver(data->dev);
3401         device_unregister(data->dev);
3402         ieee80211_free_hw(data->hw);
3403 }
3404
3405 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3406                                     struct mac80211_hwsim_data *data,
3407                                     u32 portid, u32 seq,
3408                                     struct netlink_callback *cb, int flags)
3409 {
3410         void *hdr;
3411         struct hwsim_new_radio_params param = { };
3412         int res = -EMSGSIZE;
3413
3414         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3415                           HWSIM_CMD_GET_RADIO);
3416         if (!hdr)
3417                 return -EMSGSIZE;
3418
3419         if (cb)
3420                 genl_dump_check_consistent(cb, hdr);
3421
3422         if (data->alpha2[0] && data->alpha2[1])
3423                 param.reg_alpha2 = data->alpha2;
3424
3425         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3426                                         REGULATORY_STRICT_REG);
3427         param.p2p_device = !!(data->hw->wiphy->interface_modes &
3428                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
3429         param.use_chanctx = data->use_chanctx;
3430         param.regd = data->regd;
3431         param.channels = data->channels;
3432         param.hwname = wiphy_name(data->hw->wiphy);
3433
3434         res = append_radio_msg(skb, data->idx, &param);
3435         if (res < 0)
3436                 goto out_err;
3437
3438         genlmsg_end(skb, hdr);
3439         return 0;
3440
3441 out_err:
3442         genlmsg_cancel(skb, hdr);
3443         return res;
3444 }
3445
3446 static void mac80211_hwsim_free(void)
3447 {
3448         struct mac80211_hwsim_data *data;
3449
3450         spin_lock_bh(&hwsim_radio_lock);
3451         while ((data = list_first_entry_or_null(&hwsim_radios,
3452                                                 struct mac80211_hwsim_data,
3453                                                 list))) {
3454                 list_del(&data->list);
3455                 spin_unlock_bh(&hwsim_radio_lock);
3456                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3457                                          NULL);
3458                 spin_lock_bh(&hwsim_radio_lock);
3459         }
3460         spin_unlock_bh(&hwsim_radio_lock);
3461         class_destroy(hwsim_class);
3462 }
3463
3464 static const struct net_device_ops hwsim_netdev_ops = {
3465         .ndo_start_xmit         = hwsim_mon_xmit,
3466         .ndo_set_mac_address    = eth_mac_addr,
3467         .ndo_validate_addr      = eth_validate_addr,
3468 };
3469
3470 static void hwsim_mon_setup(struct net_device *dev)
3471 {
3472         dev->netdev_ops = &hwsim_netdev_ops;
3473         dev->needs_free_netdev = true;
3474         ether_setup(dev);
3475         dev->priv_flags |= IFF_NO_QUEUE;
3476         dev->type = ARPHRD_IEEE80211_RADIOTAP;
3477         eth_zero_addr(dev->dev_addr);
3478         dev->dev_addr[0] = 0x12;
3479 }
3480
3481 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3482 {
3483         return rhashtable_lookup_fast(&hwsim_radios_rht,
3484                                       addr,
3485                                       hwsim_rht_params);
3486 }
3487
3488 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3489 {
3490         struct mac80211_hwsim_data *data;
3491
3492         hwsim_net_set_wmediumd(net, portid);
3493
3494         spin_lock_bh(&hwsim_radio_lock);
3495         list_for_each_entry(data, &hwsim_radios, list) {
3496                 if (data->netgroup == hwsim_net_get_netgroup(net))
3497                         data->wmediumd = portid;
3498         }
3499         spin_unlock_bh(&hwsim_radio_lock);
3500 }
3501
3502 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3503                                            struct genl_info *info)
3504 {
3505
3506         struct ieee80211_hdr *hdr;
3507         struct mac80211_hwsim_data *data2;
3508         struct ieee80211_tx_info *txi;
3509         struct hwsim_tx_rate *tx_attempts;
3510         u64 ret_skb_cookie;
3511         struct sk_buff *skb, *tmp;
3512         const u8 *src;
3513         unsigned int hwsim_flags;
3514         int i;
3515         unsigned long flags;
3516         bool found = false;
3517
3518         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3519             !info->attrs[HWSIM_ATTR_FLAGS] ||
3520             !info->attrs[HWSIM_ATTR_COOKIE] ||
3521             !info->attrs[HWSIM_ATTR_SIGNAL] ||
3522             !info->attrs[HWSIM_ATTR_TX_INFO])
3523                 goto out;
3524
3525         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3526         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3527         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3528
3529         data2 = get_hwsim_data_ref_from_addr(src);
3530         if (!data2)
3531                 goto out;
3532
3533         if (!hwsim_virtio_enabled) {
3534                 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3535                     data2->netgroup)
3536                         goto out;
3537
3538                 if (info->snd_portid != data2->wmediumd)
3539                         goto out;
3540         }
3541
3542         /* look for the skb matching the cookie passed back from user */
3543         spin_lock_irqsave(&data2->pending.lock, flags);
3544         skb_queue_walk_safe(&data2->pending, skb, tmp) {
3545                 uintptr_t skb_cookie;
3546
3547                 txi = IEEE80211_SKB_CB(skb);
3548                 skb_cookie = (uintptr_t)txi->rate_driver_data[0];
3549
3550                 if (skb_cookie == ret_skb_cookie) {
3551                         __skb_unlink(skb, &data2->pending);
3552                         found = true;
3553                         break;
3554                 }
3555         }
3556         spin_unlock_irqrestore(&data2->pending.lock, flags);
3557
3558         /* not found */
3559         if (!found)
3560                 goto out;
3561
3562         /* Tx info received because the frame was broadcasted on user space,
3563          so we get all the necessary info: tx attempts and skb control buff */
3564
3565         tx_attempts = (struct hwsim_tx_rate *)nla_data(
3566                        info->attrs[HWSIM_ATTR_TX_INFO]);
3567
3568         /* now send back TX status */
3569         txi = IEEE80211_SKB_CB(skb);
3570
3571         ieee80211_tx_info_clear_status(txi);
3572
3573         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3574                 txi->status.rates[i].idx = tx_attempts[i].idx;
3575                 txi->status.rates[i].count = tx_attempts[i].count;
3576         }
3577
3578         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3579
3580         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3581            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3582                 if (skb->len >= 16) {
3583                         hdr = (struct ieee80211_hdr *) skb->data;
3584                         mac80211_hwsim_monitor_ack(data2->channel,
3585                                                    hdr->addr2);
3586                 }
3587                 txi->flags |= IEEE80211_TX_STAT_ACK;
3588         }
3589
3590         if (hwsim_flags & HWSIM_TX_CTL_NO_ACK)
3591                 txi->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
3592
3593         ieee80211_tx_status_irqsafe(data2->hw, skb);
3594         return 0;
3595 out:
3596         return -EINVAL;
3597
3598 }
3599
3600 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3601                                           struct genl_info *info)
3602 {
3603         struct mac80211_hwsim_data *data2;
3604         struct ieee80211_rx_status rx_status;
3605         struct ieee80211_hdr *hdr;
3606         const u8 *dst;
3607         int frame_data_len;
3608         void *frame_data;
3609         struct sk_buff *skb = NULL;
3610         struct ieee80211_channel *channel = NULL;
3611
3612         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3613             !info->attrs[HWSIM_ATTR_FRAME] ||
3614             !info->attrs[HWSIM_ATTR_RX_RATE] ||
3615             !info->attrs[HWSIM_ATTR_SIGNAL])
3616                 goto out;
3617
3618         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3619         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3620         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3621
3622         if (frame_data_len < sizeof(struct ieee80211_hdr_3addr) ||
3623             frame_data_len > IEEE80211_MAX_DATA_LEN)
3624                 goto err;
3625
3626         /* Allocate new skb here */
3627         skb = alloc_skb(frame_data_len, GFP_KERNEL);
3628         if (skb == NULL)
3629                 goto err;
3630
3631         /* Copy the data */
3632         skb_put_data(skb, frame_data, frame_data_len);
3633
3634         data2 = get_hwsim_data_ref_from_addr(dst);
3635         if (!data2)
3636                 goto out;
3637
3638         if (data2->use_chanctx) {
3639                 if (data2->tmp_chan)
3640                         channel = data2->tmp_chan;
3641                 else if (data2->chanctx)
3642                         channel = data2->chanctx->def.chan;
3643         } else {
3644                 channel = data2->channel;
3645         }
3646         if (!channel)
3647                 goto out;
3648
3649         if (!hwsim_virtio_enabled) {
3650                 if (hwsim_net_get_netgroup(genl_info_net(info)) !=
3651                     data2->netgroup)
3652                         goto out;
3653
3654                 if (info->snd_portid != data2->wmediumd)
3655                         goto out;
3656         }
3657
3658         /* check if radio is configured properly */
3659
3660         if ((data2->idle && !data2->tmp_chan) || !data2->started)
3661                 goto out;
3662
3663         /* A frame is received from user space */
3664         memset(&rx_status, 0, sizeof(rx_status));
3665         if (info->attrs[HWSIM_ATTR_FREQ]) {
3666                 /* throw away off-channel packets, but allow both the temporary
3667                  * ("hw" scan/remain-on-channel) and regular channel, since the
3668                  * internal datapath also allows this
3669                  */
3670                 mutex_lock(&data2->mutex);
3671                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3672
3673                 if (rx_status.freq != channel->center_freq) {
3674                         mutex_unlock(&data2->mutex);
3675                         goto out;
3676                 }
3677                 mutex_unlock(&data2->mutex);
3678         } else {
3679                 rx_status.freq = channel->center_freq;
3680         }
3681
3682         rx_status.band = channel->band;
3683         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3684         if (rx_status.rate_idx >= data2->hw->wiphy->bands[rx_status.band]->n_bitrates)
3685                 goto out;
3686         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3687
3688         hdr = (void *)skb->data;
3689
3690         if (ieee80211_is_beacon(hdr->frame_control) ||
3691             ieee80211_is_probe_resp(hdr->frame_control))
3692                 rx_status.boottime_ns = ktime_get_boottime_ns();
3693
3694         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3695         data2->rx_pkts++;
3696         data2->rx_bytes += skb->len;
3697         ieee80211_rx_irqsafe(data2->hw, skb);
3698
3699         return 0;
3700 err:
3701         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3702 out:
3703         dev_kfree_skb(skb);
3704         return -EINVAL;
3705 }
3706
3707 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3708                                       struct genl_info *info)
3709 {
3710         struct net *net = genl_info_net(info);
3711         struct mac80211_hwsim_data *data;
3712         int chans = 1;
3713
3714         spin_lock_bh(&hwsim_radio_lock);
3715         list_for_each_entry(data, &hwsim_radios, list)
3716                 chans = max(chans, data->channels);
3717         spin_unlock_bh(&hwsim_radio_lock);
3718
3719         /* In the future we should revise the userspace API and allow it
3720          * to set a flag that it does support multi-channel, then we can
3721          * let this pass conditionally on the flag.
3722          * For current userspace, prohibit it since it won't work right.
3723          */
3724         if (chans > 1)
3725                 return -EOPNOTSUPP;
3726
3727         if (hwsim_net_get_wmediumd(net))
3728                 return -EBUSY;
3729
3730         hwsim_register_wmediumd(net, info->snd_portid);
3731
3732         pr_debug("mac80211_hwsim: received a REGISTER, "
3733                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3734
3735         return 0;
3736 }
3737
3738 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3739 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3740 {
3741         int i;
3742
3743         for (i = 0; i < n_ciphers; i++) {
3744                 int j;
3745                 int found = 0;
3746
3747                 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3748                         if (ciphers[i] == hwsim_ciphers[j]) {
3749                                 found = 1;
3750                                 break;
3751                         }
3752                 }
3753
3754                 if (!found)
3755                         return false;
3756         }
3757
3758         return true;
3759 }
3760
3761 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3762 {
3763         struct hwsim_new_radio_params param = { 0 };
3764         const char *hwname = NULL;
3765         int ret;
3766
3767         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3768         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3769         param.channels = channels;
3770         param.destroy_on_close =
3771                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3772
3773         if (info->attrs[HWSIM_ATTR_CHANNELS])
3774                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3775
3776         if (param.channels < 1) {
3777                 GENL_SET_ERR_MSG(info, "must have at least one channel");
3778                 return -EINVAL;
3779         }
3780
3781         if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3782                 GENL_SET_ERR_MSG(info, "too many channels specified");
3783                 return -EINVAL;
3784         }
3785
3786         if (info->attrs[HWSIM_ATTR_NO_VIF])
3787                 param.no_vif = true;
3788
3789         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3790                 param.use_chanctx = true;
3791         else
3792                 param.use_chanctx = (param.channels > 1);
3793
3794         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3795                 param.reg_alpha2 =
3796                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3797
3798         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3799                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3800
3801                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3802                         return -EINVAL;
3803
3804                 idx = array_index_nospec(idx,
3805                                          ARRAY_SIZE(hwsim_world_regdom_custom));
3806                 param.regd = hwsim_world_regdom_custom[idx];
3807         }
3808
3809         if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3810                 if (!is_valid_ether_addr(
3811                                 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3812                         GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3813                         NL_SET_BAD_ATTR(info->extack,
3814                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
3815                         return -EINVAL;
3816                 }
3817
3818                 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3819         }
3820
3821         if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3822                 param.iftypes =
3823                         nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3824
3825                 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3826                         NL_SET_ERR_MSG_ATTR(info->extack,
3827                                             info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3828                                             "cannot support more iftypes than kernel");
3829                         return -EINVAL;
3830                 }
3831         } else {
3832                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3833         }
3834
3835         /* ensure both flag and iftype support is honored */
3836         if (param.p2p_device ||
3837             param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3838                 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3839                 param.p2p_device = true;
3840         }
3841
3842         if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3843                 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3844
3845                 param.ciphers =
3846                         nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3847
3848                 if (len % sizeof(u32)) {
3849                         NL_SET_ERR_MSG_ATTR(info->extack,
3850                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3851                                             "bad cipher list length");
3852                         return -EINVAL;
3853                 }
3854
3855                 param.n_ciphers = len / sizeof(u32);
3856
3857                 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3858                         NL_SET_ERR_MSG_ATTR(info->extack,
3859                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3860                                             "too many ciphers specified");
3861                         return -EINVAL;
3862                 }
3863
3864                 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3865                         NL_SET_ERR_MSG_ATTR(info->extack,
3866                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3867                                             "unsupported ciphers specified");
3868                         return -EINVAL;
3869                 }
3870         }
3871
3872         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3873                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3874                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3875                                   GFP_KERNEL);
3876                 if (!hwname)
3877                         return -ENOMEM;
3878                 param.hwname = hwname;
3879         }
3880
3881         ret = mac80211_hwsim_new_radio(info, &param);
3882         kfree(hwname);
3883         return ret;
3884 }
3885
3886 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3887 {
3888         struct mac80211_hwsim_data *data;
3889         s64 idx = -1;
3890         const char *hwname = NULL;
3891
3892         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3893                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3894         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3895                 hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3896                                   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3897                                   GFP_KERNEL);
3898                 if (!hwname)
3899                         return -ENOMEM;
3900         } else
3901                 return -EINVAL;
3902
3903         spin_lock_bh(&hwsim_radio_lock);
3904         list_for_each_entry(data, &hwsim_radios, list) {
3905                 if (idx >= 0) {
3906                         if (data->idx != idx)
3907                                 continue;
3908                 } else {
3909                         if (!hwname ||
3910                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3911                                 continue;
3912                 }
3913
3914                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3915                         continue;
3916
3917                 list_del(&data->list);
3918                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3919                                        hwsim_rht_params);
3920                 hwsim_radios_generation++;
3921                 spin_unlock_bh(&hwsim_radio_lock);
3922                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3923                                          info);
3924                 kfree(hwname);
3925                 return 0;
3926         }
3927         spin_unlock_bh(&hwsim_radio_lock);
3928
3929         kfree(hwname);
3930         return -ENODEV;
3931 }
3932
3933 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3934 {
3935         struct mac80211_hwsim_data *data;
3936         struct sk_buff *skb;
3937         int idx, res = -ENODEV;
3938
3939         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3940                 return -EINVAL;
3941         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3942
3943         spin_lock_bh(&hwsim_radio_lock);
3944         list_for_each_entry(data, &hwsim_radios, list) {
3945                 if (data->idx != idx)
3946                         continue;
3947
3948                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3949                         continue;
3950
3951                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3952                 if (!skb) {
3953                         res = -ENOMEM;
3954                         goto out_err;
3955                 }
3956
3957                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3958                                                info->snd_seq, NULL, 0);
3959                 if (res < 0) {
3960                         nlmsg_free(skb);
3961                         goto out_err;
3962                 }
3963
3964                 res = genlmsg_reply(skb, info);
3965                 break;
3966         }
3967
3968 out_err:
3969         spin_unlock_bh(&hwsim_radio_lock);
3970
3971         return res;
3972 }
3973
3974 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3975                                struct netlink_callback *cb)
3976 {
3977         int last_idx = cb->args[0] - 1;
3978         struct mac80211_hwsim_data *data = NULL;
3979         int res = 0;
3980         void *hdr;
3981
3982         spin_lock_bh(&hwsim_radio_lock);
3983         cb->seq = hwsim_radios_generation;
3984
3985         if (last_idx >= hwsim_radio_idx-1)
3986                 goto done;
3987
3988         list_for_each_entry(data, &hwsim_radios, list) {
3989                 if (data->idx <= last_idx)
3990                         continue;
3991
3992                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3993                         continue;
3994
3995                 res = mac80211_hwsim_get_radio(skb, data,
3996                                                NETLINK_CB(cb->skb).portid,
3997                                                cb->nlh->nlmsg_seq, cb,
3998                                                NLM_F_MULTI);
3999                 if (res < 0)
4000                         break;
4001
4002                 last_idx = data->idx;
4003         }
4004
4005         cb->args[0] = last_idx + 1;
4006
4007         /* list changed, but no new element sent, set interrupted flag */
4008         if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
4009                 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
4010                                   cb->nlh->nlmsg_seq, &hwsim_genl_family,
4011                                   NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
4012                 if (hdr) {
4013                         genl_dump_check_consistent(cb, hdr);
4014                         genlmsg_end(skb, hdr);
4015                 } else {
4016                         res = -EMSGSIZE;
4017                 }
4018         }
4019
4020 done:
4021         spin_unlock_bh(&hwsim_radio_lock);
4022         return res ?: skb->len;
4023 }
4024
4025 /* Generic Netlink operations array */
4026 static const struct genl_small_ops hwsim_ops[] = {
4027         {
4028                 .cmd = HWSIM_CMD_REGISTER,
4029                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4030                 .doit = hwsim_register_received_nl,
4031                 .flags = GENL_UNS_ADMIN_PERM,
4032         },
4033         {
4034                 .cmd = HWSIM_CMD_FRAME,
4035                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4036                 .doit = hwsim_cloned_frame_received_nl,
4037         },
4038         {
4039                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
4040                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4041                 .doit = hwsim_tx_info_frame_received_nl,
4042         },
4043         {
4044                 .cmd = HWSIM_CMD_NEW_RADIO,
4045                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4046                 .doit = hwsim_new_radio_nl,
4047                 .flags = GENL_UNS_ADMIN_PERM,
4048         },
4049         {
4050                 .cmd = HWSIM_CMD_DEL_RADIO,
4051                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4052                 .doit = hwsim_del_radio_nl,
4053                 .flags = GENL_UNS_ADMIN_PERM,
4054         },
4055         {
4056                 .cmd = HWSIM_CMD_GET_RADIO,
4057                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
4058                 .doit = hwsim_get_radio_nl,
4059                 .dumpit = hwsim_dump_radio_nl,
4060         },
4061 };
4062
4063 static struct genl_family hwsim_genl_family __ro_after_init = {
4064         .name = "MAC80211_HWSIM",
4065         .version = 1,
4066         .maxattr = HWSIM_ATTR_MAX,
4067         .policy = hwsim_genl_policy,
4068         .netnsok = true,
4069         .module = THIS_MODULE,
4070         .small_ops = hwsim_ops,
4071         .n_small_ops = ARRAY_SIZE(hwsim_ops),
4072         .mcgrps = hwsim_mcgrps,
4073         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
4074 };
4075
4076 static void remove_user_radios(u32 portid)
4077 {
4078         struct mac80211_hwsim_data *entry, *tmp;
4079         LIST_HEAD(list);
4080
4081         spin_lock_bh(&hwsim_radio_lock);
4082         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
4083                 if (entry->destroy_on_close && entry->portid == portid) {
4084                         list_move(&entry->list, &list);
4085                         rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
4086                                                hwsim_rht_params);
4087                         hwsim_radios_generation++;
4088                 }
4089         }
4090         spin_unlock_bh(&hwsim_radio_lock);
4091
4092         list_for_each_entry_safe(entry, tmp, &list, list) {
4093                 list_del(&entry->list);
4094                 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
4095                                          NULL);
4096         }
4097 }
4098
4099 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
4100                                          unsigned long state,
4101                                          void *_notify)
4102 {
4103         struct netlink_notify *notify = _notify;
4104
4105         if (state != NETLINK_URELEASE)
4106                 return NOTIFY_DONE;
4107
4108         remove_user_radios(notify->portid);
4109
4110         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
4111                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
4112                        " socket, switching to perfect channel medium\n");
4113                 hwsim_register_wmediumd(notify->net, 0);
4114         }
4115         return NOTIFY_DONE;
4116
4117 }
4118
4119 static struct notifier_block hwsim_netlink_notifier = {
4120         .notifier_call = mac80211_hwsim_netlink_notify,
4121 };
4122
4123 static int __init hwsim_init_netlink(void)
4124 {
4125         int rc;
4126
4127         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
4128
4129         rc = genl_register_family(&hwsim_genl_family);
4130         if (rc)
4131                 goto failure;
4132
4133         rc = netlink_register_notifier(&hwsim_netlink_notifier);
4134         if (rc) {
4135                 genl_unregister_family(&hwsim_genl_family);
4136                 goto failure;
4137         }
4138
4139         return 0;
4140
4141 failure:
4142         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
4143         return -EINVAL;
4144 }
4145
4146 static __net_init int hwsim_init_net(struct net *net)
4147 {
4148         return hwsim_net_set_netgroup(net);
4149 }
4150
4151 static void __net_exit hwsim_exit_net(struct net *net)
4152 {
4153         struct mac80211_hwsim_data *data, *tmp;
4154         LIST_HEAD(list);
4155
4156         spin_lock_bh(&hwsim_radio_lock);
4157         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
4158                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
4159                         continue;
4160
4161                 /* Radios created in init_net are returned to init_net. */
4162                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
4163                         continue;
4164
4165                 list_move(&data->list, &list);
4166                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
4167                                        hwsim_rht_params);
4168                 hwsim_radios_generation++;
4169         }
4170         spin_unlock_bh(&hwsim_radio_lock);
4171
4172         list_for_each_entry_safe(data, tmp, &list, list) {
4173                 list_del(&data->list);
4174                 mac80211_hwsim_del_radio(data,
4175                                          wiphy_name(data->hw->wiphy),
4176                                          NULL);
4177         }
4178
4179         ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
4180 }
4181
4182 static struct pernet_operations hwsim_net_ops = {
4183         .init = hwsim_init_net,
4184         .exit = hwsim_exit_net,
4185         .id   = &hwsim_net_id,
4186         .size = sizeof(struct hwsim_net),
4187 };
4188
4189 static void hwsim_exit_netlink(void)
4190 {
4191         /* unregister the notifier */
4192         netlink_unregister_notifier(&hwsim_netlink_notifier);
4193         /* unregister the family */
4194         genl_unregister_family(&hwsim_genl_family);
4195 }
4196
4197 #if IS_REACHABLE(CONFIG_VIRTIO)
4198 static void hwsim_virtio_tx_done(struct virtqueue *vq)
4199 {
4200         unsigned int len;
4201         struct sk_buff *skb;
4202         unsigned long flags;
4203
4204         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4205         while ((skb = virtqueue_get_buf(vq, &len)))
4206                 nlmsg_free(skb);
4207         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4208 }
4209
4210 static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
4211 {
4212         struct nlmsghdr *nlh;
4213         struct genlmsghdr *gnlh;
4214         struct nlattr *tb[HWSIM_ATTR_MAX + 1];
4215         struct genl_info info = {};
4216         int err;
4217
4218         nlh = nlmsg_hdr(skb);
4219         gnlh = nlmsg_data(nlh);
4220
4221         if (skb->len < nlh->nlmsg_len)
4222                 return -EINVAL;
4223
4224         err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
4225                             hwsim_genl_policy, NULL);
4226         if (err) {
4227                 pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
4228                 return err;
4229         }
4230
4231         info.attrs = tb;
4232
4233         switch (gnlh->cmd) {
4234         case HWSIM_CMD_FRAME:
4235                 hwsim_cloned_frame_received_nl(skb, &info);
4236                 break;
4237         case HWSIM_CMD_TX_INFO_FRAME:
4238                 hwsim_tx_info_frame_received_nl(skb, &info);
4239                 break;
4240         default:
4241                 pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
4242                 return -EPROTO;
4243         }
4244         return 0;
4245 }
4246
4247 static void hwsim_virtio_rx_work(struct work_struct *work)
4248 {
4249         struct virtqueue *vq;
4250         unsigned int len;
4251         struct sk_buff *skb;
4252         struct scatterlist sg[1];
4253         int err;
4254         unsigned long flags;
4255
4256         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4257         if (!hwsim_virtio_enabled)
4258                 goto out_unlock;
4259
4260         skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
4261         if (!skb)
4262                 goto out_unlock;
4263         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4264
4265         skb->data = skb->head;
4266         skb_reset_tail_pointer(skb);
4267         skb_put(skb, len);
4268         hwsim_virtio_handle_cmd(skb);
4269
4270         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4271         if (!hwsim_virtio_enabled) {
4272                 nlmsg_free(skb);
4273                 goto out_unlock;
4274         }
4275         vq = hwsim_vqs[HWSIM_VQ_RX];
4276         sg_init_one(sg, skb->head, skb_end_offset(skb));
4277         err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
4278         if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
4279                 nlmsg_free(skb);
4280         else
4281                 virtqueue_kick(vq);
4282         schedule_work(&hwsim_virtio_rx);
4283
4284 out_unlock:
4285         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4286 }
4287
4288 static void hwsim_virtio_rx_done(struct virtqueue *vq)
4289 {
4290         schedule_work(&hwsim_virtio_rx);
4291 }
4292
4293 static int init_vqs(struct virtio_device *vdev)
4294 {
4295         vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
4296                 [HWSIM_VQ_TX] = hwsim_virtio_tx_done,
4297                 [HWSIM_VQ_RX] = hwsim_virtio_rx_done,
4298         };
4299         const char *names[HWSIM_NUM_VQS] = {
4300                 [HWSIM_VQ_TX] = "tx",
4301                 [HWSIM_VQ_RX] = "rx",
4302         };
4303
4304         return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
4305                                hwsim_vqs, callbacks, names, NULL);
4306 }
4307
4308 static int fill_vq(struct virtqueue *vq)
4309 {
4310         int i, err;
4311         struct sk_buff *skb;
4312         struct scatterlist sg[1];
4313
4314         for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
4315                 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
4316                 if (!skb)
4317                         return -ENOMEM;
4318
4319                 sg_init_one(sg, skb->head, skb_end_offset(skb));
4320                 err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
4321                 if (err) {
4322                         nlmsg_free(skb);
4323                         return err;
4324                 }
4325         }
4326         virtqueue_kick(vq);
4327         return 0;
4328 }
4329
4330 static void remove_vqs(struct virtio_device *vdev)
4331 {
4332         int i;
4333
4334         vdev->config->reset(vdev);
4335
4336         for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
4337                 struct virtqueue *vq = hwsim_vqs[i];
4338                 struct sk_buff *skb;
4339
4340                 while ((skb = virtqueue_detach_unused_buf(vq)))
4341                         nlmsg_free(skb);
4342         }
4343
4344         vdev->config->del_vqs(vdev);
4345 }
4346
4347 static int hwsim_virtio_probe(struct virtio_device *vdev)
4348 {
4349         int err;
4350         unsigned long flags;
4351
4352         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4353         if (hwsim_virtio_enabled) {
4354                 spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4355                 return -EEXIST;
4356         }
4357         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4358
4359         err = init_vqs(vdev);
4360         if (err)
4361                 return err;
4362
4363         err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
4364         if (err)
4365                 goto out_remove;
4366
4367         spin_lock_irqsave(&hwsim_virtio_lock, flags);
4368         hwsim_virtio_enabled = true;
4369         spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
4370
4371         schedule_work(&hwsim_virtio_rx);
4372         return 0;
4373
4374 out_remove:
4375         remove_vqs(vdev);
4376         return err;
4377 }
4378
4379 static void hwsim_virtio_remove(struct virtio_device *vdev)
4380 {
4381         hwsim_virtio_enabled = false;
4382
4383         cancel_work_sync(&hwsim_virtio_rx);
4384
4385         remove_vqs(vdev);
4386 }
4387
4388 /* MAC80211_HWSIM virtio device id table */
4389 static const struct virtio_device_id id_table[] = {
4390         { VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
4391         { 0 }
4392 };
4393 MODULE_DEVICE_TABLE(virtio, id_table);
4394
4395 static struct virtio_driver virtio_hwsim = {
4396         .driver.name = KBUILD_MODNAME,
4397         .driver.owner = THIS_MODULE,
4398         .id_table = id_table,
4399         .probe = hwsim_virtio_probe,
4400         .remove = hwsim_virtio_remove,
4401 };
4402
4403 static int hwsim_register_virtio_driver(void)
4404 {
4405         spin_lock_init(&hwsim_virtio_lock);
4406
4407         return register_virtio_driver(&virtio_hwsim);
4408 }
4409
4410 static void hwsim_unregister_virtio_driver(void)
4411 {
4412         unregister_virtio_driver(&virtio_hwsim);
4413 }
4414 #else
4415 static inline int hwsim_register_virtio_driver(void)
4416 {
4417         return 0;
4418 }
4419
4420 static inline void hwsim_unregister_virtio_driver(void)
4421 {
4422 }
4423 #endif
4424
4425 static int __init init_mac80211_hwsim(void)
4426 {
4427         int i, err;
4428
4429         if (radios < 0 || radios > 100)
4430                 return -EINVAL;
4431
4432         if (channels < 1)
4433                 return -EINVAL;
4434
4435         spin_lock_init(&hwsim_radio_lock);
4436
4437         err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
4438         if (err)
4439                 return err;
4440
4441         err = register_pernet_device(&hwsim_net_ops);
4442         if (err)
4443                 goto out_free_rht;
4444
4445         err = platform_driver_register(&mac80211_hwsim_driver);
4446         if (err)
4447                 goto out_unregister_pernet;
4448
4449         err = hwsim_init_netlink();
4450         if (err)
4451                 goto out_unregister_driver;
4452
4453         err = hwsim_register_virtio_driver();
4454         if (err)
4455                 goto out_exit_netlink;
4456
4457         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
4458         if (IS_ERR(hwsim_class)) {
4459                 err = PTR_ERR(hwsim_class);
4460                 goto out_exit_virtio;
4461         }
4462
4463         hwsim_init_s1g_channels(hwsim_channels_s1g);
4464
4465         for (i = 0; i < radios; i++) {
4466                 struct hwsim_new_radio_params param = { 0 };
4467
4468                 param.channels = channels;
4469
4470                 switch (regtest) {
4471                 case HWSIM_REGTEST_DIFF_COUNTRY:
4472                         if (i < ARRAY_SIZE(hwsim_alpha2s))
4473                                 param.reg_alpha2 = hwsim_alpha2s[i];
4474                         break;
4475                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
4476                         if (!i)
4477                                 param.reg_alpha2 = hwsim_alpha2s[0];
4478                         break;
4479                 case HWSIM_REGTEST_STRICT_ALL:
4480                         param.reg_strict = true;
4481                         fallthrough;
4482                 case HWSIM_REGTEST_DRIVER_REG_ALL:
4483                         param.reg_alpha2 = hwsim_alpha2s[0];
4484                         break;
4485                 case HWSIM_REGTEST_WORLD_ROAM:
4486                         if (i == 0)
4487                                 param.regd = &hwsim_world_regdom_custom_01;
4488                         break;
4489                 case HWSIM_REGTEST_CUSTOM_WORLD:
4490                         param.regd = &hwsim_world_regdom_custom_01;
4491                         break;
4492                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
4493                         if (i == 0)
4494                                 param.regd = &hwsim_world_regdom_custom_01;
4495                         else if (i == 1)
4496                                 param.regd = &hwsim_world_regdom_custom_02;
4497                         break;
4498                 case HWSIM_REGTEST_STRICT_FOLLOW:
4499                         if (i == 0) {
4500                                 param.reg_strict = true;
4501                                 param.reg_alpha2 = hwsim_alpha2s[0];
4502                         }
4503                         break;
4504                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
4505                         if (i == 0) {
4506                                 param.reg_strict = true;
4507                                 param.reg_alpha2 = hwsim_alpha2s[0];
4508                         } else if (i == 1) {
4509                                 param.reg_alpha2 = hwsim_alpha2s[1];
4510                         }
4511                         break;
4512                 case HWSIM_REGTEST_ALL:
4513                         switch (i) {
4514                         case 0:
4515                                 param.regd = &hwsim_world_regdom_custom_01;
4516                                 break;
4517                         case 1:
4518                                 param.regd = &hwsim_world_regdom_custom_02;
4519                                 break;
4520                         case 2:
4521                                 param.reg_alpha2 = hwsim_alpha2s[0];
4522                                 break;
4523                         case 3:
4524                                 param.reg_alpha2 = hwsim_alpha2s[1];
4525                                 break;
4526                         case 4:
4527                                 param.reg_strict = true;
4528                                 param.reg_alpha2 = hwsim_alpha2s[2];
4529                                 break;
4530                         }
4531                         break;
4532                 default:
4533                         break;
4534                 }
4535
4536                 param.p2p_device = support_p2p_device;
4537                 param.use_chanctx = channels > 1;
4538                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4539                 if (param.p2p_device)
4540                         param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4541
4542                 err = mac80211_hwsim_new_radio(NULL, &param);
4543                 if (err < 0)
4544                         goto out_free_radios;
4545         }
4546
4547         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4548                                  hwsim_mon_setup);
4549         if (hwsim_mon == NULL) {
4550                 err = -ENOMEM;
4551                 goto out_free_radios;
4552         }
4553
4554         rtnl_lock();
4555         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4556         if (err < 0) {
4557                 rtnl_unlock();
4558                 goto out_free_mon;
4559         }
4560
4561         err = register_netdevice(hwsim_mon);
4562         if (err < 0) {
4563                 rtnl_unlock();
4564                 goto out_free_mon;
4565         }
4566         rtnl_unlock();
4567
4568         return 0;
4569
4570 out_free_mon:
4571         free_netdev(hwsim_mon);
4572 out_free_radios:
4573         mac80211_hwsim_free();
4574 out_exit_virtio:
4575         hwsim_unregister_virtio_driver();
4576 out_exit_netlink:
4577         hwsim_exit_netlink();
4578 out_unregister_driver:
4579         platform_driver_unregister(&mac80211_hwsim_driver);
4580 out_unregister_pernet:
4581         unregister_pernet_device(&hwsim_net_ops);
4582 out_free_rht:
4583         rhashtable_destroy(&hwsim_radios_rht);
4584         return err;
4585 }
4586 module_init(init_mac80211_hwsim);
4587
4588 static void __exit exit_mac80211_hwsim(void)
4589 {
4590         pr_debug("mac80211_hwsim: unregister radios\n");
4591
4592         hwsim_unregister_virtio_driver();
4593         hwsim_exit_netlink();
4594
4595         mac80211_hwsim_free();
4596
4597         rhashtable_destroy(&hwsim_radios_rht);
4598         unregister_netdev(hwsim_mon);
4599         platform_driver_unregister(&mac80211_hwsim_driver);
4600         unregister_pernet_device(&hwsim_net_ops);
4601 }
4602 module_exit(exit_mac80211_hwsim);