drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include "mac80211_hwsim.h"
  34
  35 #define WARN_QUEUE 100
  36 #define MAX_QUEUE 200
  37
  38 MODULE_AUTHOR("Jouni Malinen");
  39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  40 MODULE_LICENSE("GPL");
  41
  42 static u32 wmediumd_portid;
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 static bool support_p2p_device = true;
  61 module_param(support_p2p_device, bool, 0444);
  62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  63
  64 /**
  65  * enum hwsim_regtest - the type of regulatory tests we offer
  66  *
  67  * These are the different values you can use for the regtest
  68  * module parameter. This is useful to help test world roaming
  69  * and the driver regulatory_hint() call and combinations of these.
  70  * If you want to do specific alpha2 regulatory domain tests simply
  71  * use the userspace regulatory request as that will be respected as
  72  * well without the need of this module parameter. This is designed
  73  * only for testing the driver regulatory request, world roaming
  74  * and all possible combinations.
  75  *
  76  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  77  *      this is the default value.
  78  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  79  *      hint, only one driver regulatory hint will be sent as such the
  80  *      secondary radios are expected to follow.
  81  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  82  *      request with all radios reporting the same regulatory domain.
  83  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  84  *      different regulatory domains requests. Expected behaviour is for
  85  *      an intersection to occur but each device will still use their
  86  *      respective regulatory requested domains. Subsequent radios will
  87  *      use the resulting intersection.
  88  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  89  *      this by using a custom beacon-capable regulatory domain for the first
  90  *      radio. All other device world roam.
  91  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  92  *      domain requests. All radios will adhere to this custom world regulatory
  93  *      domain.
  94  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  95  *      domain requests. The first radio will adhere to the first custom world
  96  *      regulatory domain, the second one to the second custom world regulatory
  97  *      domain. All other devices will world roam.
  98  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  99  *      settings, only the first radio will send a regulatory domain request
 100  *      and use strict settings. The rest of the radios are expected to follow.
 101  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 102  *      settings. All radios will adhere to this.
 103  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 104  *      domain settings, combined with secondary driver regulatory domain
 105  *      settings. The first radio will get a strict regulatory domain setting
 106  *      using the first driver regulatory request and the second radio will use
 107  *      non-strict settings using the second driver regulatory request. All
 108  *      other devices should follow the intersection created between the
 109  *      first two.
 110  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 111  *      at least 6 radios for a complete test. We will test in this order:
 112  *      1 - driver custom world regulatory domain
 113  *      2 - second custom world regulatory domain
 114  *      3 - first driver regulatory domain request
 115  *      4 - second driver regulatory domain request
 116  *      5 - strict regulatory domain settings using the third driver regulatory
 117  *          domain request
 118  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 119  *                 regulatory requests.
 120  */
 121 enum hwsim_regtest {
 122         HWSIM_REGTEST_DISABLED = 0,
 123         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 124         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 125         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 126         HWSIM_REGTEST_WORLD_ROAM = 4,
 127         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 128         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 129         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 130         HWSIM_REGTEST_STRICT_ALL = 8,
 131         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 132         HWSIM_REGTEST_ALL = 10,
 133 };
 134
 135 /* Set to one of the HWSIM_REGTEST_* values above */
 136 static int regtest = HWSIM_REGTEST_DISABLED;
 137 module_param(regtest, int, 0444);
 138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 139
 140 static const char *hwsim_alpha2s[] = {
 141         "FI",
 142         "AL",
 143         "US",
 144         "DE",
 145         "JP",
 146         "AL",
 147 };
 148
 149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 150         .n_reg_rules = 4,
 151         .alpha2 =  "99",
 152         .reg_rules = {
 153                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 154                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 155                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 156                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 157         }
 158 };
 159
 160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 161         .n_reg_rules = 2,
 162         .alpha2 =  "99",
 163         .reg_rules = {
 164                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 165                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 166                          NL80211_RRF_NO_IR),
 167         }
 168 };
 169
 170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 171         &hwsim_world_regdom_custom_01,
 172         &hwsim_world_regdom_custom_02,
 173 };
 174
 175 struct hwsim_vif_priv {
 176         u32 magic;
 177         u8 bssid[ETH_ALEN];
 178         bool assoc;
 179         bool bcn_en;
 180         u16 aid;
 181 };
 182
 183 #define HWSIM_VIF_MAGIC 0x69537748
 184
 185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 186 {
 187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 188         WARN(vp->magic != HWSIM_VIF_MAGIC,
 189              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 190              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 191 }
 192
 193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 194 {
 195         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 196         vp->magic = HWSIM_VIF_MAGIC;
 197 }
 198
 199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = 0;
 203 }
 204
 205 struct hwsim_sta_priv {
 206         u32 magic;
 207 };
 208
 209 #define HWSIM_STA_MAGIC 0x6d537749
 210
 211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 212 {
 213         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 214         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 215 }
 216
 217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         sp->magic = HWSIM_STA_MAGIC;
 221 }
 222
 223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = 0;
 227 }
 228
 229 struct hwsim_chanctx_priv {
 230         u32 magic;
 231 };
 232
 233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 234
 235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 236 {
 237         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 238         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 239 }
 240
 241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         cp->magic = HWSIM_CHANCTX_MAGIC;
 245 }
 246
 247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = 0;
 251 }
 252
 253 static struct class *hwsim_class;
 254
 255 static struct net_device *hwsim_mon; /* global monitor netdev */
 256
 257 #define CHAN2G(_freq)  { \
 258         .band = NL80211_BAND_2GHZ, \
 259         .center_freq = (_freq), \
 260         .hw_value = (_freq), \
 261         .max_power = 20, \
 262 }
 263
 264 #define CHAN5G(_freq) { \
 265         .band = NL80211_BAND_5GHZ, \
 266         .center_freq = (_freq), \
 267         .hw_value = (_freq), \
 268         .max_power = 20, \
 269 }
 270
 271 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 272         CHAN2G(2412), /* Channel 1 */
 273         CHAN2G(2417), /* Channel 2 */
 274         CHAN2G(2422), /* Channel 3 */
 275         CHAN2G(2427), /* Channel 4 */
 276         CHAN2G(2432), /* Channel 5 */
 277         CHAN2G(2437), /* Channel 6 */
 278         CHAN2G(2442), /* Channel 7 */
 279         CHAN2G(2447), /* Channel 8 */
 280         CHAN2G(2452), /* Channel 9 */
 281         CHAN2G(2457), /* Channel 10 */
 282         CHAN2G(2462), /* Channel 11 */
 283         CHAN2G(2467), /* Channel 12 */
 284         CHAN2G(2472), /* Channel 13 */
 285         CHAN2G(2484), /* Channel 14 */
 286 };
 287
 288 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 289         CHAN5G(5180), /* Channel 36 */
 290         CHAN5G(5200), /* Channel 40 */
 291         CHAN5G(5220), /* Channel 44 */
 292         CHAN5G(5240), /* Channel 48 */
 293
 294         CHAN5G(5260), /* Channel 52 */
 295         CHAN5G(5280), /* Channel 56 */
 296         CHAN5G(5300), /* Channel 60 */
 297         CHAN5G(5320), /* Channel 64 */
 298
 299         CHAN5G(5500), /* Channel 100 */
 300         CHAN5G(5520), /* Channel 104 */
 301         CHAN5G(5540), /* Channel 108 */
 302         CHAN5G(5560), /* Channel 112 */
 303         CHAN5G(5580), /* Channel 116 */
 304         CHAN5G(5600), /* Channel 120 */
 305         CHAN5G(5620), /* Channel 124 */
 306         CHAN5G(5640), /* Channel 128 */
 307         CHAN5G(5660), /* Channel 132 */
 308         CHAN5G(5680), /* Channel 136 */
 309         CHAN5G(5700), /* Channel 140 */
 310
 311         CHAN5G(5745), /* Channel 149 */
 312         CHAN5G(5765), /* Channel 153 */
 313         CHAN5G(5785), /* Channel 157 */
 314         CHAN5G(5805), /* Channel 161 */
 315         CHAN5G(5825), /* Channel 165 */
 316 };
 317
 318 static const struct ieee80211_rate hwsim_rates[] = {
 319         { .bitrate = 10 },
 320         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 321         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 322         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 323         { .bitrate = 60 },
 324         { .bitrate = 90 },
 325         { .bitrate = 120 },
 326         { .bitrate = 180 },
 327         { .bitrate = 240 },
 328         { .bitrate = 360 },
 329         { .bitrate = 480 },
 330         { .bitrate = 540 }
 331 };
 332
 333 #define OUI_QCA 0x001374
 334 #define QCA_NL80211_SUBCMD_TEST 1
 335 enum qca_nl80211_vendor_subcmds {
 336         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 337         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 338 };
 339
 340 static const struct nla_policy
 341 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 342         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 343 };
 344
 345 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 346                                           struct wireless_dev *wdev,
 347                                           const void *data, int data_len)
 348 {
 349         struct sk_buff *skb;
 350         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 351         int err;
 352         u32 val;
 353
 354         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
 355                         hwsim_vendor_test_policy);
 356         if (err)
 357                 return err;
 358         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 359                 return -EINVAL;
 360         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 361         wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
 362
 363         /* Send a vendor event as a test. Note that this would not normally be
 364          * done within a command handler, but rather, based on some other
 365          * trigger. For simplicity, this command is used to trigger the event
 366          * here.
 367          *
 368          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 369          */
 370         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 371         if (skb) {
 372                 /* skb_put() or nla_put() will fill up data within
 373                  * NL80211_ATTR_VENDOR_DATA.
 374                  */
 375
 376                 /* Add vendor data */
 377                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 378
 379                 /* Send the event - this will call nla_nest_end() */
 380                 cfg80211_vendor_event(skb, GFP_KERNEL);
 381         }
 382
 383         /* Send a response to the command */
 384         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 385         if (!skb)
 386                 return -ENOMEM;
 387
 388         /* skb_put() or nla_put() will fill up data within
 389          * NL80211_ATTR_VENDOR_DATA
 390          */
 391         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 392
 393         return cfg80211_vendor_cmd_reply(skb);
 394 }
 395
 396 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 397         {
 398                 .info = { .vendor_id = OUI_QCA,
 399                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 400                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 401                 .doit = mac80211_hwsim_vendor_cmd_test,
 402         }
 403 };
 404
 405 /* Advertise support vendor specific events */
 406 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 407         { .vendor_id = OUI_QCA, .subcmd = 1 },
 408 };
 409
 410 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 411         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 412         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 413                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 414 #ifdef CONFIG_MAC80211_MESH
 415                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 416 #endif
 417                                  BIT(NL80211_IFTYPE_AP) |
 418                                  BIT(NL80211_IFTYPE_P2P_GO) },
 419         /* must be last, see hwsim_if_comb */
 420         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 421 };
 422
 423 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
 424         { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
 425 };
 426
 427 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 428         {
 429                 .limits = hwsim_if_limits,
 430                 /* remove the last entry which is P2P_DEVICE */
 431                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 432                 .max_interfaces = 2048,
 433                 .num_different_channels = 1,
 434         },
 435         {
 436                 .limits = hwsim_if_dfs_limits,
 437                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
 438                 .max_interfaces = 8,
 439                 .num_different_channels = 1,
 440                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 441                                        BIT(NL80211_CHAN_WIDTH_20) |
 442                                        BIT(NL80211_CHAN_WIDTH_40) |
 443                                        BIT(NL80211_CHAN_WIDTH_80) |
 444                                        BIT(NL80211_CHAN_WIDTH_160),
 445         }
 446 };
 447
 448 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 449         {
 450                 .limits = hwsim_if_limits,
 451                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 452                 .max_interfaces = 2048,
 453                 .num_different_channels = 1,
 454         },
 455         {
 456                 .limits = hwsim_if_dfs_limits,
 457                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
 458                 .max_interfaces = 8,
 459                 .num_different_channels = 1,
 460                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 461                                        BIT(NL80211_CHAN_WIDTH_20) |
 462                                        BIT(NL80211_CHAN_WIDTH_40) |
 463                                        BIT(NL80211_CHAN_WIDTH_80) |
 464                                        BIT(NL80211_CHAN_WIDTH_160),
 465         }
 466 };
 467
 468 static spinlock_t hwsim_radio_lock;
 469 static struct list_head hwsim_radios;
 470 static int hwsim_radio_idx;
 471
 472 static struct platform_driver mac80211_hwsim_driver = {
 473         .driver = {
 474                 .name = "mac80211_hwsim",
 475         },
 476 };
 477
 478 struct mac80211_hwsim_data {
 479         struct list_head list;
 480         struct ieee80211_hw *hw;
 481         struct device *dev;
 482         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 483         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 484         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 485         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 486         struct ieee80211_iface_combination if_combination;
 487
 488         struct mac_address addresses[2];
 489         int channels, idx;
 490         bool use_chanctx;
 491         bool destroy_on_close;
 492         struct work_struct destroy_work;
 493         u32 portid;
 494         char alpha2[2];
 495         const struct ieee80211_regdomain *regd;
 496
 497         struct ieee80211_channel *tmp_chan;
 498         struct ieee80211_channel *roc_chan;
 499         u32 roc_duration;
 500         struct delayed_work roc_start;
 501         struct delayed_work roc_done;
 502         struct delayed_work hw_scan;
 503         struct cfg80211_scan_request *hw_scan_request;
 504         struct ieee80211_vif *hw_scan_vif;
 505         int scan_chan_idx;
 506         u8 scan_addr[ETH_ALEN];
 507
 508         struct ieee80211_channel *channel;
 509         u64 beacon_int  /* beacon interval in us */;
 510         unsigned int rx_filter;
 511         bool started, idle, scanning;
 512         struct mutex mutex;
 513         struct tasklet_hrtimer beacon_timer;
 514         enum ps_mode {
 515                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 516         } ps;
 517         bool ps_poll_pending;
 518         struct dentry *debugfs;
 519
 520         uintptr_t pending_cookie;
 521         struct sk_buff_head pending;    /* packets pending */
 522         /*
 523          * Only radios in the same group can communicate together (the
 524          * channel has to match too). Each bit represents a group. A
 525          * radio can be in more than one group.
 526          */
 527         u64 group;
 528
 529         int power_level;
 530
 531         /* difference between this hw's clock and the real clock, in usecs */
 532         s64 tsf_offset;
 533         s64 bcn_delta;
 534         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 535         u64 abs_bcn_ts;
 536
 537         /* Stats */
 538         u64 tx_pkts;
 539         u64 rx_pkts;
 540         u64 tx_bytes;
 541         u64 rx_bytes;
 542         u64 tx_dropped;
 543         u64 tx_failed;
 544 };
 545
 546
 547 struct hwsim_radiotap_hdr {
 548         struct ieee80211_radiotap_header hdr;
 549         __le64 rt_tsft;
 550         u8 rt_flags;
 551         u8 rt_rate;
 552         __le16 rt_channel;
 553         __le16 rt_chbitmask;
 554 } __packed;
 555
 556 struct hwsim_radiotap_ack_hdr {
 557         struct ieee80211_radiotap_header hdr;
 558         u8 rt_flags;
 559         u8 pad;
 560         __le16 rt_channel;
 561         __le16 rt_chbitmask;
 562 } __packed;
 563
 564 /* MAC80211_HWSIM netlinf family */
 565 static struct genl_family hwsim_genl_family = {
 566         .id = GENL_ID_GENERATE,
 567         .hdrsize = 0,
 568         .name = "MAC80211_HWSIM",
 569         .version = 1,
 570         .maxattr = HWSIM_ATTR_MAX,
 571 };
 572
 573 enum hwsim_multicast_groups {
 574         HWSIM_MCGRP_CONFIG,
 575 };
 576
 577 static const struct genl_multicast_group hwsim_mcgrps[] = {
 578         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 579 };
 580
 581 /* MAC80211_HWSIM netlink policy */
 582
 583 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 584         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 585         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 586         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 587                                .len = IEEE80211_MAX_DATA_LEN },
 588         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 589         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 590         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 591         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 592                                  .len = IEEE80211_TX_MAX_RATES *
 593                                         sizeof(struct hwsim_tx_rate)},
 594         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 595         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 596         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 597         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 598         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 599         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 600         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 601         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 602         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 603         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 604         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 605 };
 606
 607 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 608                                     struct sk_buff *skb,
 609                                     struct ieee80211_channel *chan);
 610
 611 /* sysfs attributes */
 612 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 613 {
 614         struct mac80211_hwsim_data *data = dat;
 615         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 616         struct sk_buff *skb;
 617         struct ieee80211_pspoll *pspoll;
 618
 619         if (!vp->assoc)
 620                 return;
 621
 622         wiphy_debug(data->hw->wiphy,
 623                     "%s: send PS-Poll to %pM for aid %d\n",
 624                     __func__, vp->bssid, vp->aid);
 625
 626         skb = dev_alloc_skb(sizeof(*pspoll));
 627         if (!skb)
 628                 return;
 629         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 630         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 631                                             IEEE80211_STYPE_PSPOLL |
 632                                             IEEE80211_FCTL_PM);
 633         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 634         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 635         memcpy(pspoll->ta, mac, ETH_ALEN);
 636
 637         rcu_read_lock();
 638         mac80211_hwsim_tx_frame(data->hw, skb,
 639                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 640         rcu_read_unlock();
 641 }
 642
 643 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 644                                 struct ieee80211_vif *vif, int ps)
 645 {
 646         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 647         struct sk_buff *skb;
 648         struct ieee80211_hdr *hdr;
 649
 650         if (!vp->assoc)
 651                 return;
 652
 653         wiphy_debug(data->hw->wiphy,
 654                     "%s: send data::nullfunc to %pM ps=%d\n",
 655                     __func__, vp->bssid, ps);
 656
 657         skb = dev_alloc_skb(sizeof(*hdr));
 658         if (!skb)
 659                 return;
 660         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 661         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 662                                          IEEE80211_STYPE_NULLFUNC |
 663                                          (ps ? IEEE80211_FCTL_PM : 0));
 664         hdr->duration_id = cpu_to_le16(0);
 665         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 666         memcpy(hdr->addr2, mac, ETH_ALEN);
 667         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 668
 669         rcu_read_lock();
 670         mac80211_hwsim_tx_frame(data->hw, skb,
 671                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 672         rcu_read_unlock();
 673 }
 674
 675
 676 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 677                                    struct ieee80211_vif *vif)
 678 {
 679         struct mac80211_hwsim_data *data = dat;
 680         hwsim_send_nullfunc(data, mac, vif, 1);
 681 }
 682
 683 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 684                                       struct ieee80211_vif *vif)
 685 {
 686         struct mac80211_hwsim_data *data = dat;
 687         hwsim_send_nullfunc(data, mac, vif, 0);
 688 }
 689
 690 static int hwsim_fops_ps_read(void *dat, u64 *val)
 691 {
 692         struct mac80211_hwsim_data *data = dat;
 693         *val = data->ps;
 694         return 0;
 695 }
 696
 697 static int hwsim_fops_ps_write(void *dat, u64 val)
 698 {
 699         struct mac80211_hwsim_data *data = dat;
 700         enum ps_mode old_ps;
 701
 702         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 703             val != PS_MANUAL_POLL)
 704                 return -EINVAL;
 705
 706         old_ps = data->ps;
 707         data->ps = val;
 708
 709         local_bh_disable();
 710         if (val == PS_MANUAL_POLL) {
 711                 ieee80211_iterate_active_interfaces_atomic(
 712                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 713                         hwsim_send_ps_poll, data);
 714                 data->ps_poll_pending = true;
 715         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 716                 ieee80211_iterate_active_interfaces_atomic(
 717                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 718                         hwsim_send_nullfunc_ps, data);
 719         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 720                 ieee80211_iterate_active_interfaces_atomic(
 721                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 722                         hwsim_send_nullfunc_no_ps, data);
 723         }
 724         local_bh_enable();
 725
 726         return 0;
 727 }
 728
 729 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 730                         "%llu\n");
 731
 732 static int hwsim_write_simulate_radar(void *dat, u64 val)
 733 {
 734         struct mac80211_hwsim_data *data = dat;
 735
 736         ieee80211_radar_detected(data->hw);
 737
 738         return 0;
 739 }
 740
 741 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 742                         hwsim_write_simulate_radar, "%llu\n");
 743
 744 static int hwsim_fops_group_read(void *dat, u64 *val)
 745 {
 746         struct mac80211_hwsim_data *data = dat;
 747         *val = data->group;
 748         return 0;
 749 }
 750
 751 static int hwsim_fops_group_write(void *dat, u64 val)
 752 {
 753         struct mac80211_hwsim_data *data = dat;
 754         data->group = val;
 755         return 0;
 756 }
 757
 758 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 759                         hwsim_fops_group_read, hwsim_fops_group_write,
 760                         "%llx\n");
 761
 762 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 763                                         struct net_device *dev)
 764 {
 765         /* TODO: allow packet injection */
 766         dev_kfree_skb(skb);
 767         return NETDEV_TX_OK;
 768 }
 769
 770 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 771 {
 772         return ktime_to_us(ktime_get_real());
 773 }
 774
 775 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 776 {
 777         u64 now = mac80211_hwsim_get_tsf_raw();
 778         return cpu_to_le64(now + data->tsf_offset);
 779 }
 780
 781 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 782                                   struct ieee80211_vif *vif)
 783 {
 784         struct mac80211_hwsim_data *data = hw->priv;
 785         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 786 }
 787
 788 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 789                 struct ieee80211_vif *vif, u64 tsf)
 790 {
 791         struct mac80211_hwsim_data *data = hw->priv;
 792         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 793         u32 bcn_int = data->beacon_int;
 794         u64 delta = abs(tsf - now);
 795
 796         /* adjust after beaconing with new timestamp at old TBTT */
 797         if (tsf > now) {
 798                 data->tsf_offset += delta;
 799                 data->bcn_delta = do_div(delta, bcn_int);
 800         } else {
 801                 data->tsf_offset -= delta;
 802                 data->bcn_delta = -do_div(delta, bcn_int);
 803         }
 804 }
 805
 806 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 807                                       struct sk_buff *tx_skb,
 808                                       struct ieee80211_channel *chan)
 809 {
 810         struct mac80211_hwsim_data *data = hw->priv;
 811         struct sk_buff *skb;
 812         struct hwsim_radiotap_hdr *hdr;
 813         u16 flags;
 814         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 815         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 816
 817         if (WARN_ON(!txrate))
 818                 return;
 819
 820         if (!netif_running(hwsim_mon))
 821                 return;
 822
 823         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 824         if (skb == NULL)
 825                 return;
 826
 827         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 828         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 829         hdr->hdr.it_pad = 0;
 830         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 831         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 832                                           (1 << IEEE80211_RADIOTAP_RATE) |
 833                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 834                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 835         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 836         hdr->rt_flags = 0;
 837         hdr->rt_rate = txrate->bitrate / 5;
 838         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 839         flags = IEEE80211_CHAN_2GHZ;
 840         if (txrate->flags & IEEE80211_RATE_ERP_G)
 841                 flags |= IEEE80211_CHAN_OFDM;
 842         else
 843                 flags |= IEEE80211_CHAN_CCK;
 844         hdr->rt_chbitmask = cpu_to_le16(flags);
 845
 846         skb->dev = hwsim_mon;
 847         skb_reset_mac_header(skb);
 848         skb->ip_summed = CHECKSUM_UNNECESSARY;
 849         skb->pkt_type = PACKET_OTHERHOST;
 850         skb->protocol = htons(ETH_P_802_2);
 851         memset(skb->cb, 0, sizeof(skb->cb));
 852         netif_rx(skb);
 853 }
 854
 855
 856 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 857                                        const u8 *addr)
 858 {
 859         struct sk_buff *skb;
 860         struct hwsim_radiotap_ack_hdr *hdr;
 861         u16 flags;
 862         struct ieee80211_hdr *hdr11;
 863
 864         if (!netif_running(hwsim_mon))
 865                 return;
 866
 867         skb = dev_alloc_skb(100);
 868         if (skb == NULL)
 869                 return;
 870
 871         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 872         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 873         hdr->hdr.it_pad = 0;
 874         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 875         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 876                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 877         hdr->rt_flags = 0;
 878         hdr->pad = 0;
 879         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 880         flags = IEEE80211_CHAN_2GHZ;
 881         hdr->rt_chbitmask = cpu_to_le16(flags);
 882
 883         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 884         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 885                                            IEEE80211_STYPE_ACK);
 886         hdr11->duration_id = cpu_to_le16(0);
 887         memcpy(hdr11->addr1, addr, ETH_ALEN);
 888
 889         skb->dev = hwsim_mon;
 890         skb_reset_mac_header(skb);
 891         skb->ip_summed = CHECKSUM_UNNECESSARY;
 892         skb->pkt_type = PACKET_OTHERHOST;
 893         skb->protocol = htons(ETH_P_802_2);
 894         memset(skb->cb, 0, sizeof(skb->cb));
 895         netif_rx(skb);
 896 }
 897
 898 struct mac80211_hwsim_addr_match_data {
 899         u8 addr[ETH_ALEN];
 900         bool ret;
 901 };
 902
 903 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 904                                      struct ieee80211_vif *vif)
 905 {
 906         struct mac80211_hwsim_addr_match_data *md = data;
 907
 908         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 909                 md->ret = true;
 910 }
 911
 912 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 913                                       const u8 *addr)
 914 {
 915         struct mac80211_hwsim_addr_match_data md = {
 916                 .ret = false,
 917         };
 918
 919         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 920                 return true;
 921
 922         memcpy(md.addr, addr, ETH_ALEN);
 923
 924         ieee80211_iterate_active_interfaces_atomic(data->hw,
 925                                                    IEEE80211_IFACE_ITER_NORMAL,
 926                                                    mac80211_hwsim_addr_iter,
 927                                                    &md);
 928
 929         return md.ret;
 930 }
 931
 932 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 933                            struct sk_buff *skb)
 934 {
 935         switch (data->ps) {
 936         case PS_DISABLED:
 937                 return true;
 938         case PS_ENABLED:
 939                 return false;
 940         case PS_AUTO_POLL:
 941                 /* TODO: accept (some) Beacons by default and other frames only
 942                  * if pending PS-Poll has been sent */
 943                 return true;
 944         case PS_MANUAL_POLL:
 945                 /* Allow unicast frames to own address if there is a pending
 946                  * PS-Poll */
 947                 if (data->ps_poll_pending &&
 948                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 949                         data->ps_poll_pending = false;
 950                         return true;
 951                 }
 952                 return false;
 953         }
 954
 955         return true;
 956 }
 957
 958 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 959                                        struct sk_buff *my_skb,
 960                                        int dst_portid)
 961 {
 962         struct sk_buff *skb;
 963         struct mac80211_hwsim_data *data = hw->priv;
 964         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 965         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 966         void *msg_head;
 967         unsigned int hwsim_flags = 0;
 968         int i;
 969         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 970         uintptr_t cookie;
 971
 972         if (data->ps != PS_DISABLED)
 973                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 974         /* If the queue contains MAX_QUEUE skb's drop some */
 975         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 976                 /* Droping until WARN_QUEUE level */
 977                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
 978                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
 979                         data->tx_dropped++;
 980                 }
 981         }
 982
 983         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 984         if (skb == NULL)
 985                 goto nla_put_failure;
 986
 987         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 988                                HWSIM_CMD_FRAME);
 989         if (msg_head == NULL) {
 990                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 991                 goto nla_put_failure;
 992         }
 993
 994         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 995                     ETH_ALEN, data->addresses[1].addr))
 996                 goto nla_put_failure;
 997
 998         /* We get the skb->data */
 999         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1000                 goto nla_put_failure;
1001
1002         /* We get the flags for this transmission, and we translate them to
1003            wmediumd flags  */
1004
1005         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1006                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1007
1008         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1009                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1010
1011         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1012                 goto nla_put_failure;
1013
1014         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1015                 goto nla_put_failure;
1016
1017         /* We get the tx control (rate and retries) info*/
1018
1019         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1020                 tx_attempts[i].idx = info->status.rates[i].idx;
1021                 tx_attempts[i].count = info->status.rates[i].count;
1022         }
1023
1024         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1025                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1026                     tx_attempts))
1027                 goto nla_put_failure;
1028
1029         /* We create a cookie to identify this skb */
1030         data->pending_cookie++;
1031         cookie = data->pending_cookie;
1032         info->rate_driver_data[0] = (void *)cookie;
1033         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, cookie))
1034                 goto nla_put_failure;
1035
1036         genlmsg_end(skb, msg_head);
1037         if (genlmsg_unicast(&init_net, skb, dst_portid))
1038                 goto err_free_txskb;
1039
1040         /* Enqueue the packet */
1041         skb_queue_tail(&data->pending, my_skb);
1042         data->tx_pkts++;
1043         data->tx_bytes += my_skb->len;
1044         return;
1045
1046 nla_put_failure:
1047         nlmsg_free(skb);
1048 err_free_txskb:
1049         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1050         ieee80211_free_txskb(hw, my_skb);
1051         data->tx_failed++;
1052 }
1053
1054 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1055                                struct ieee80211_channel *c2)
1056 {
1057         if (!c1 || !c2)
1058                 return false;
1059
1060         return c1->center_freq == c2->center_freq;
1061 }
1062
1063 struct tx_iter_data {
1064         struct ieee80211_channel *channel;
1065         bool receive;
1066 };
1067
1068 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1069                                    struct ieee80211_vif *vif)
1070 {
1071         struct tx_iter_data *data = _data;
1072
1073         if (!vif->chanctx_conf)
1074                 return;
1075
1076         if (!hwsim_chans_compat(data->channel,
1077                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1078                 return;
1079
1080         data->receive = true;
1081 }
1082
1083 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1084 {
1085         /*
1086          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1087          * e.g. like this:
1088          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1089          * (but you should use a valid OUI, not that)
1090          *
1091          * If anyone wants to 'donate' a radiotap OUI/subns code
1092          * please send a patch removing this #ifdef and changing
1093          * the values accordingly.
1094          */
1095 #ifdef HWSIM_RADIOTAP_OUI
1096         struct ieee80211_vendor_radiotap *rtap;
1097
1098         /*
1099          * Note that this code requires the headroom in the SKB
1100          * that was allocated earlier.
1101          */
1102         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1103         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1104         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1105         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1106         rtap->subns = 127;
1107
1108         /*
1109          * Radiotap vendor namespaces can (and should) also be
1110          * split into fields by using the standard radiotap
1111          * presence bitmap mechanism. Use just BIT(0) here for
1112          * the presence bitmap.
1113          */
1114         rtap->present = BIT(0);
1115         /* We have 8 bytes of (dummy) data */
1116         rtap->len = 8;
1117         /* For testing, also require it to be aligned */
1118         rtap->align = 8;
1119         /* And also test that padding works, 4 bytes */
1120         rtap->pad = 4;
1121         /* push the data */
1122         memcpy(rtap->data, "ABCDEFGH", 8);
1123         /* make sure to clear padding, mac80211 doesn't */
1124         memset(rtap->data + 8, 0, 4);
1125
1126         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1127 #endif
1128 }
1129
1130 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1131                                           struct sk_buff *skb,
1132                                           struct ieee80211_channel *chan)
1133 {
1134         struct mac80211_hwsim_data *data = hw->priv, *data2;
1135         bool ack = false;
1136         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1137         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1138         struct ieee80211_rx_status rx_status;
1139         u64 now;
1140
1141         memset(&rx_status, 0, sizeof(rx_status));
1142         rx_status.flag |= RX_FLAG_MACTIME_START;
1143         rx_status.freq = chan->center_freq;
1144         rx_status.band = chan->band;
1145         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1146                 rx_status.rate_idx =
1147                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1148                 rx_status.vht_nss =
1149                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1150                 rx_status.flag |= RX_FLAG_VHT;
1151         } else {
1152                 rx_status.rate_idx = info->control.rates[0].idx;
1153                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1154                         rx_status.flag |= RX_FLAG_HT;
1155         }
1156         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1157                 rx_status.flag |= RX_FLAG_40MHZ;
1158         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1159                 rx_status.flag |= RX_FLAG_SHORT_GI;
1160         /* TODO: simulate real signal strength (and optional packet loss) */
1161         rx_status.signal = data->power_level - 50;
1162
1163         if (data->ps != PS_DISABLED)
1164                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1165
1166         /* release the skb's source info */
1167         skb_orphan(skb);
1168         skb_dst_drop(skb);
1169         skb->mark = 0;
1170         secpath_reset(skb);
1171         nf_reset(skb);
1172
1173         /*
1174          * Get absolute mactime here so all HWs RX at the "same time", and
1175          * absolute TX time for beacon mactime so the timestamp matches.
1176          * Giving beacons a different mactime than non-beacons looks messy, but
1177          * it helps the Toffset be exact and a ~10us mactime discrepancy
1178          * probably doesn't really matter.
1179          */
1180         if (ieee80211_is_beacon(hdr->frame_control) ||
1181             ieee80211_is_probe_resp(hdr->frame_control))
1182                 now = data->abs_bcn_ts;
1183         else
1184                 now = mac80211_hwsim_get_tsf_raw();
1185
1186         /* Copy skb to all enabled radios that are on the current frequency */
1187         spin_lock(&hwsim_radio_lock);
1188         list_for_each_entry(data2, &hwsim_radios, list) {
1189                 struct sk_buff *nskb;
1190                 struct tx_iter_data tx_iter_data = {
1191                         .receive = false,
1192                         .channel = chan,
1193                 };
1194
1195                 if (data == data2)
1196                         continue;
1197
1198                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1199                     !hwsim_ps_rx_ok(data2, skb))
1200                         continue;
1201
1202                 if (!(data->group & data2->group))
1203                         continue;
1204
1205                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1206                     !hwsim_chans_compat(chan, data2->channel)) {
1207                         ieee80211_iterate_active_interfaces_atomic(
1208                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1209                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1210                         if (!tx_iter_data.receive)
1211                                 continue;
1212                 }
1213
1214                 /*
1215                  * reserve some space for our vendor and the normal
1216                  * radiotap header, since we're copying anyway
1217                  */
1218                 if (skb->len < PAGE_SIZE && paged_rx) {
1219                         struct page *page = alloc_page(GFP_ATOMIC);
1220
1221                         if (!page)
1222                                 continue;
1223
1224                         nskb = dev_alloc_skb(128);
1225                         if (!nskb) {
1226                                 __free_page(page);
1227                                 continue;
1228                         }
1229
1230                         memcpy(page_address(page), skb->data, skb->len);
1231                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1232                 } else {
1233                         nskb = skb_copy(skb, GFP_ATOMIC);
1234                         if (!nskb)
1235                                 continue;
1236                 }
1237
1238                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1239                         ack = true;
1240
1241                 rx_status.mactime = now + data2->tsf_offset;
1242
1243                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1244
1245                 mac80211_hwsim_add_vendor_rtap(nskb);
1246
1247                 data2->rx_pkts++;
1248                 data2->rx_bytes += nskb->len;
1249                 ieee80211_rx_irqsafe(data2->hw, nskb);
1250         }
1251         spin_unlock(&hwsim_radio_lock);
1252
1253         return ack;
1254 }
1255
1256 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1257                               struct ieee80211_tx_control *control,
1258                               struct sk_buff *skb)
1259 {
1260         struct mac80211_hwsim_data *data = hw->priv;
1261         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1262         struct ieee80211_hdr *hdr = (void *)skb->data;
1263         struct ieee80211_chanctx_conf *chanctx_conf;
1264         struct ieee80211_channel *channel;
1265         bool ack;
1266         u32 _portid;
1267
1268         if (WARN_ON(skb->len < 10)) {
1269                 /* Should not happen; just a sanity check for addr1 use */
1270                 ieee80211_free_txskb(hw, skb);
1271                 return;
1272         }
1273
1274         if (!data->use_chanctx) {
1275                 channel = data->channel;
1276         } else if (txi->hw_queue == 4) {
1277                 channel = data->tmp_chan;
1278         } else {
1279                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1280                 if (chanctx_conf)
1281                         channel = chanctx_conf->def.chan;
1282                 else
1283                         channel = NULL;
1284         }
1285
1286         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1287                 ieee80211_free_txskb(hw, skb);
1288                 return;
1289         }
1290
1291         if (data->idle && !data->tmp_chan) {
1292                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1293                 ieee80211_free_txskb(hw, skb);
1294                 return;
1295         }
1296
1297         if (txi->control.vif)
1298                 hwsim_check_magic(txi->control.vif);
1299         if (control->sta)
1300                 hwsim_check_sta_magic(control->sta);
1301
1302         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1303                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1304                                        txi->control.rates,
1305                                        ARRAY_SIZE(txi->control.rates));
1306
1307         txi->rate_driver_data[0] = channel;
1308
1309         if (skb->len >= 24 + 8 &&
1310             ieee80211_is_probe_resp(hdr->frame_control)) {
1311                 /* fake header transmission time */
1312                 struct ieee80211_mgmt *mgmt;
1313                 struct ieee80211_rate *txrate;
1314                 u64 ts;
1315
1316                 mgmt = (struct ieee80211_mgmt *)skb->data;
1317                 txrate = ieee80211_get_tx_rate(hw, txi);
1318                 ts = mac80211_hwsim_get_tsf_raw();
1319                 mgmt->u.probe_resp.timestamp =
1320                         cpu_to_le64(ts + data->tsf_offset +
1321                                     24 * 8 * 10 / txrate->bitrate);
1322         }
1323
1324         mac80211_hwsim_monitor_rx(hw, skb, channel);
1325
1326         /* wmediumd mode check */
1327         _portid = ACCESS_ONCE(wmediumd_portid);
1328
1329         if (_portid)
1330                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1331
1332         /* NO wmediumd detected, perfect medium simulation */
1333         data->tx_pkts++;
1334         data->tx_bytes += skb->len;
1335         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1336
1337         if (ack && skb->len >= 16)
1338                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1339
1340         ieee80211_tx_info_clear_status(txi);
1341
1342         /* frame was transmitted at most favorable rate at first attempt */
1343         txi->control.rates[0].count = 1;
1344         txi->control.rates[1].idx = -1;
1345
1346         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1347                 txi->flags |= IEEE80211_TX_STAT_ACK;
1348         ieee80211_tx_status_irqsafe(hw, skb);
1349 }
1350
1351
1352 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1353 {
1354         struct mac80211_hwsim_data *data = hw->priv;
1355         wiphy_debug(hw->wiphy, "%s\n", __func__);
1356         data->started = true;
1357         return 0;
1358 }
1359
1360
1361 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1362 {
1363         struct mac80211_hwsim_data *data = hw->priv;
1364         data->started = false;
1365         tasklet_hrtimer_cancel(&data->beacon_timer);
1366         wiphy_debug(hw->wiphy, "%s\n", __func__);
1367 }
1368
1369
1370 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1371                                         struct ieee80211_vif *vif)
1372 {
1373         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1374                     __func__, ieee80211_vif_type_p2p(vif),
1375                     vif->addr);
1376         hwsim_set_magic(vif);
1377
1378         vif->cab_queue = 0;
1379         vif->hw_queue[IEEE80211_AC_VO] = 0;
1380         vif->hw_queue[IEEE80211_AC_VI] = 1;
1381         vif->hw_queue[IEEE80211_AC_BE] = 2;
1382         vif->hw_queue[IEEE80211_AC_BK] = 3;
1383
1384         return 0;
1385 }
1386
1387
1388 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1389                                            struct ieee80211_vif *vif,
1390                                            enum nl80211_iftype newtype,
1391                                            bool newp2p)
1392 {
1393         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1394         wiphy_debug(hw->wiphy,
1395                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1396                     __func__, ieee80211_vif_type_p2p(vif),
1397                     newtype, vif->addr);
1398         hwsim_check_magic(vif);
1399
1400         /*
1401          * interface may change from non-AP to AP in
1402          * which case this needs to be set up again
1403          */
1404         vif->cab_queue = 0;
1405
1406         return 0;
1407 }
1408
1409 static void mac80211_hwsim_remove_interface(
1410         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1411 {
1412         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1413                     __func__, ieee80211_vif_type_p2p(vif),
1414                     vif->addr);
1415         hwsim_check_magic(vif);
1416         hwsim_clear_magic(vif);
1417 }
1418
1419 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1420                                     struct sk_buff *skb,
1421                                     struct ieee80211_channel *chan)
1422 {
1423         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1424
1425         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1426                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1427                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1428                                        txi->control.rates,
1429                                        ARRAY_SIZE(txi->control.rates));
1430         }
1431
1432         mac80211_hwsim_monitor_rx(hw, skb, chan);
1433
1434         if (_pid)
1435                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1436
1437         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1438         dev_kfree_skb(skb);
1439 }
1440
1441 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1442                                      struct ieee80211_vif *vif)
1443 {
1444         struct mac80211_hwsim_data *data = arg;
1445         struct ieee80211_hw *hw = data->hw;
1446         struct ieee80211_tx_info *info;
1447         struct ieee80211_rate *txrate;
1448         struct ieee80211_mgmt *mgmt;
1449         struct sk_buff *skb;
1450
1451         hwsim_check_magic(vif);
1452
1453         if (vif->type != NL80211_IFTYPE_AP &&
1454             vif->type != NL80211_IFTYPE_MESH_POINT &&
1455             vif->type != NL80211_IFTYPE_ADHOC)
1456                 return;
1457
1458         skb = ieee80211_beacon_get(hw, vif);
1459         if (skb == NULL)
1460                 return;
1461         info = IEEE80211_SKB_CB(skb);
1462         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1463                 ieee80211_get_tx_rates(vif, NULL, skb,
1464                                        info->control.rates,
1465                                        ARRAY_SIZE(info->control.rates));
1466
1467         txrate = ieee80211_get_tx_rate(hw, info);
1468
1469         mgmt = (struct ieee80211_mgmt *) skb->data;
1470         /* fake header transmission time */
1471         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1472         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1473                                                data->tsf_offset +
1474                                                24 * 8 * 10 / txrate->bitrate);
1475
1476         mac80211_hwsim_tx_frame(hw, skb,
1477                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1478
1479         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1480                 ieee80211_csa_finish(vif);
1481 }
1482
1483 static enum hrtimer_restart
1484 mac80211_hwsim_beacon(struct hrtimer *timer)
1485 {
1486         struct mac80211_hwsim_data *data =
1487                 container_of(timer, struct mac80211_hwsim_data,
1488                              beacon_timer.timer);
1489         struct ieee80211_hw *hw = data->hw;
1490         u64 bcn_int = data->beacon_int;
1491         ktime_t next_bcn;
1492
1493         if (!data->started)
1494                 goto out;
1495
1496         ieee80211_iterate_active_interfaces_atomic(
1497                 hw, IEEE80211_IFACE_ITER_NORMAL,
1498                 mac80211_hwsim_beacon_tx, data);
1499
1500         /* beacon at new TBTT + beacon interval */
1501         if (data->bcn_delta) {
1502                 bcn_int -= data->bcn_delta;
1503                 data->bcn_delta = 0;
1504         }
1505
1506         next_bcn = ktime_add(hrtimer_get_expires(timer),
1507                              ns_to_ktime(bcn_int * 1000));
1508         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1509 out:
1510         return HRTIMER_NORESTART;
1511 }
1512
1513 static const char * const hwsim_chanwidths[] = {
1514         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1515         [NL80211_CHAN_WIDTH_20] = "ht20",
1516         [NL80211_CHAN_WIDTH_40] = "ht40",
1517         [NL80211_CHAN_WIDTH_80] = "vht80",
1518         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1519         [NL80211_CHAN_WIDTH_160] = "vht160",
1520 };
1521
1522 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1523 {
1524         struct mac80211_hwsim_data *data = hw->priv;
1525         struct ieee80211_conf *conf = &hw->conf;
1526         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1527                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1528                 [IEEE80211_SMPS_OFF] = "off",
1529                 [IEEE80211_SMPS_STATIC] = "static",
1530                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1531         };
1532
1533         if (conf->chandef.chan)
1534                 wiphy_debug(hw->wiphy,
1535                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1536                             __func__,
1537                             conf->chandef.chan->center_freq,
1538                             conf->chandef.center_freq1,
1539                             conf->chandef.center_freq2,
1540                             hwsim_chanwidths[conf->chandef.width],
1541                             !!(conf->flags & IEEE80211_CONF_IDLE),
1542                             !!(conf->flags & IEEE80211_CONF_PS),
1543                             smps_modes[conf->smps_mode]);
1544         else
1545                 wiphy_debug(hw->wiphy,
1546                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1547                             __func__,
1548                             !!(conf->flags & IEEE80211_CONF_IDLE),
1549                             !!(conf->flags & IEEE80211_CONF_PS),
1550                             smps_modes[conf->smps_mode]);
1551
1552         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1553
1554         data->channel = conf->chandef.chan;
1555
1556         WARN_ON(data->channel && data->use_chanctx);
1557
1558         data->power_level = conf->power_level;
1559         if (!data->started || !data->beacon_int)
1560                 tasklet_hrtimer_cancel(&data->beacon_timer);
1561         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1562                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1563                 u32 bcn_int = data->beacon_int;
1564                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1565
1566                 tasklet_hrtimer_start(&data->beacon_timer,
1567                                       ns_to_ktime(until_tbtt * 1000),
1568                                       HRTIMER_MODE_REL);
1569         }
1570
1571         return 0;
1572 }
1573
1574
1575 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1576                                             unsigned int changed_flags,
1577                                             unsigned int *total_flags,u64 multicast)
1578 {
1579         struct mac80211_hwsim_data *data = hw->priv;
1580
1581         wiphy_debug(hw->wiphy, "%s\n", __func__);
1582
1583         data->rx_filter = 0;
1584         if (*total_flags & FIF_ALLMULTI)
1585                 data->rx_filter |= FIF_ALLMULTI;
1586
1587         *total_flags = data->rx_filter;
1588 }
1589
1590 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1591                                        struct ieee80211_vif *vif)
1592 {
1593         unsigned int *count = data;
1594         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1595
1596         if (vp->bcn_en)
1597                 (*count)++;
1598 }
1599
1600 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1601                                             struct ieee80211_vif *vif,
1602                                             struct ieee80211_bss_conf *info,
1603                                             u32 changed)
1604 {
1605         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1606         struct mac80211_hwsim_data *data = hw->priv;
1607
1608         hwsim_check_magic(vif);
1609
1610         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1611                     __func__, changed, vif->addr);
1612
1613         if (changed & BSS_CHANGED_BSSID) {
1614                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1615                             __func__, info->bssid);
1616                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1617         }
1618
1619         if (changed & BSS_CHANGED_ASSOC) {
1620                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1621                             info->assoc, info->aid);
1622                 vp->assoc = info->assoc;
1623                 vp->aid = info->aid;
1624         }
1625
1626         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1627                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1628                             info->enable_beacon, info->beacon_int);
1629                 vp->bcn_en = info->enable_beacon;
1630                 if (data->started &&
1631                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1632                     info->enable_beacon) {
1633                         u64 tsf, until_tbtt;
1634                         u32 bcn_int;
1635                         data->beacon_int = info->beacon_int * 1024;
1636                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1637                         bcn_int = data->beacon_int;
1638                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1639                         tasklet_hrtimer_start(&data->beacon_timer,
1640                                               ns_to_ktime(until_tbtt * 1000),
1641                                               HRTIMER_MODE_REL);
1642                 } else if (!info->enable_beacon) {
1643                         unsigned int count = 0;
1644                         ieee80211_iterate_active_interfaces_atomic(
1645                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1646                                 mac80211_hwsim_bcn_en_iter, &count);
1647                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1648                                     count);
1649                         if (count == 0) {
1650                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1651                                 data->beacon_int = 0;
1652                         }
1653                 }
1654         }
1655
1656         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1657                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1658                             info->use_cts_prot);
1659         }
1660
1661         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1662                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1663                             info->use_short_preamble);
1664         }
1665
1666         if (changed & BSS_CHANGED_ERP_SLOT) {
1667                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1668         }
1669
1670         if (changed & BSS_CHANGED_HT) {
1671                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1672                             info->ht_operation_mode);
1673         }
1674
1675         if (changed & BSS_CHANGED_BASIC_RATES) {
1676                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1677                             (unsigned long long) info->basic_rates);
1678         }
1679
1680         if (changed & BSS_CHANGED_TXPOWER)
1681                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1682 }
1683
1684 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1685                                   struct ieee80211_vif *vif,
1686                                   struct ieee80211_sta *sta)
1687 {
1688         hwsim_check_magic(vif);
1689         hwsim_set_sta_magic(sta);
1690
1691         return 0;
1692 }
1693
1694 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1695                                      struct ieee80211_vif *vif,
1696                                      struct ieee80211_sta *sta)
1697 {
1698         hwsim_check_magic(vif);
1699         hwsim_clear_sta_magic(sta);
1700
1701         return 0;
1702 }
1703
1704 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1705                                       struct ieee80211_vif *vif,
1706                                       enum sta_notify_cmd cmd,
1707                                       struct ieee80211_sta *sta)
1708 {
1709         hwsim_check_magic(vif);
1710
1711         switch (cmd) {
1712         case STA_NOTIFY_SLEEP:
1713         case STA_NOTIFY_AWAKE:
1714                 /* TODO: make good use of these flags */
1715                 break;
1716         default:
1717                 WARN(1, "Invalid sta notify: %d\n", cmd);
1718                 break;
1719         }
1720 }
1721
1722 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1723                                   struct ieee80211_sta *sta,
1724                                   bool set)
1725 {
1726         hwsim_check_sta_magic(sta);
1727         return 0;
1728 }
1729
1730 static int mac80211_hwsim_conf_tx(
1731         struct ieee80211_hw *hw,
1732         struct ieee80211_vif *vif, u16 queue,
1733         const struct ieee80211_tx_queue_params *params)
1734 {
1735         wiphy_debug(hw->wiphy,
1736                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1737                     __func__, queue,
1738                     params->txop, params->cw_min,
1739                     params->cw_max, params->aifs);
1740         return 0;
1741 }
1742
1743 static int mac80211_hwsim_get_survey(
1744         struct ieee80211_hw *hw, int idx,
1745         struct survey_info *survey)
1746 {
1747         struct ieee80211_conf *conf = &hw->conf;
1748
1749         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1750
1751         if (idx != 0)
1752                 return -ENOENT;
1753
1754         /* Current channel */
1755         survey->channel = conf->chandef.chan;
1756
1757         /*
1758          * Magically conjured noise level --- this is only ok for simulated hardware.
1759          *
1760          * A real driver which cannot determine the real channel noise MUST NOT
1761          * report any noise, especially not a magically conjured one :-)
1762          */
1763         survey->filled = SURVEY_INFO_NOISE_DBM;
1764         survey->noise = -92;
1765
1766         return 0;
1767 }
1768
1769 #ifdef CONFIG_NL80211_TESTMODE
1770 /*
1771  * This section contains example code for using netlink
1772  * attributes with the testmode command in nl80211.
1773  */
1774
1775 /* These enums need to be kept in sync with userspace */
1776 enum hwsim_testmode_attr {
1777         __HWSIM_TM_ATTR_INVALID = 0,
1778         HWSIM_TM_ATTR_CMD       = 1,
1779         HWSIM_TM_ATTR_PS        = 2,
1780
1781         /* keep last */
1782         __HWSIM_TM_ATTR_AFTER_LAST,
1783         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1784 };
1785
1786 enum hwsim_testmode_cmd {
1787         HWSIM_TM_CMD_SET_PS             = 0,
1788         HWSIM_TM_CMD_GET_PS             = 1,
1789         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1790         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1791 };
1792
1793 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1794         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1795         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1796 };
1797
1798 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1799                                        struct ieee80211_vif *vif,
1800                                        void *data, int len)
1801 {
1802         struct mac80211_hwsim_data *hwsim = hw->priv;
1803         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1804         struct sk_buff *skb;
1805         int err, ps;
1806
1807         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1808                         hwsim_testmode_policy);
1809         if (err)
1810                 return err;
1811
1812         if (!tb[HWSIM_TM_ATTR_CMD])
1813                 return -EINVAL;
1814
1815         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1816         case HWSIM_TM_CMD_SET_PS:
1817                 if (!tb[HWSIM_TM_ATTR_PS])
1818                         return -EINVAL;
1819                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1820                 return hwsim_fops_ps_write(hwsim, ps);
1821         case HWSIM_TM_CMD_GET_PS:
1822                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1823                                                 nla_total_size(sizeof(u32)));
1824                 if (!skb)
1825                         return -ENOMEM;
1826                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1827                         goto nla_put_failure;
1828                 return cfg80211_testmode_reply(skb);
1829         case HWSIM_TM_CMD_STOP_QUEUES:
1830                 ieee80211_stop_queues(hw);
1831                 return 0;
1832         case HWSIM_TM_CMD_WAKE_QUEUES:
1833                 ieee80211_wake_queues(hw);
1834                 return 0;
1835         default:
1836                 return -EOPNOTSUPP;
1837         }
1838
1839  nla_put_failure:
1840         kfree_skb(skb);
1841         return -ENOBUFS;
1842 }
1843 #endif
1844
1845 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1846                                        struct ieee80211_vif *vif,
1847                                        struct ieee80211_ampdu_params *params)
1848 {
1849         struct ieee80211_sta *sta = params->sta;
1850         enum ieee80211_ampdu_mlme_action action = params->action;
1851         u16 tid = params->tid;
1852
1853         switch (action) {
1854         case IEEE80211_AMPDU_TX_START:
1855                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1856                 break;
1857         case IEEE80211_AMPDU_TX_STOP_CONT:
1858         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1859         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1860                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1861                 break;
1862         case IEEE80211_AMPDU_TX_OPERATIONAL:
1863                 break;
1864         case IEEE80211_AMPDU_RX_START:
1865         case IEEE80211_AMPDU_RX_STOP:
1866                 break;
1867         default:
1868                 return -EOPNOTSUPP;
1869         }
1870
1871         return 0;
1872 }
1873
1874 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1875                                  struct ieee80211_vif *vif,
1876                                  u32 queues, bool drop)
1877 {
1878         /* Not implemented, queues only on kernel side */
1879 }
1880
1881 static void hw_scan_work(struct work_struct *work)
1882 {
1883         struct mac80211_hwsim_data *hwsim =
1884                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1885         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1886         int dwell, i;
1887
1888         mutex_lock(&hwsim->mutex);
1889         if (hwsim->scan_chan_idx >= req->n_channels) {
1890                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1891                 ieee80211_scan_completed(hwsim->hw, false);
1892                 hwsim->hw_scan_request = NULL;
1893                 hwsim->hw_scan_vif = NULL;
1894                 hwsim->tmp_chan = NULL;
1895                 mutex_unlock(&hwsim->mutex);
1896                 return;
1897         }
1898
1899         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1900                     req->channels[hwsim->scan_chan_idx]->center_freq);
1901
1902         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1903         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1904                                       IEEE80211_CHAN_RADAR) ||
1905             !req->n_ssids) {
1906                 dwell = 120;
1907         } else {
1908                 dwell = 30;
1909                 /* send probes */
1910                 for (i = 0; i < req->n_ssids; i++) {
1911                         struct sk_buff *probe;
1912                         struct ieee80211_mgmt *mgmt;
1913
1914                         probe = ieee80211_probereq_get(hwsim->hw,
1915                                                        hwsim->scan_addr,
1916                                                        req->ssids[i].ssid,
1917                                                        req->ssids[i].ssid_len,
1918                                                        req->ie_len);
1919                         if (!probe)
1920                                 continue;
1921
1922                         mgmt = (struct ieee80211_mgmt *) probe->data;
1923                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
1924                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
1925
1926                         if (req->ie_len)
1927                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1928                                        req->ie_len);
1929
1930                         local_bh_disable();
1931                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1932                                                 hwsim->tmp_chan);
1933                         local_bh_enable();
1934                 }
1935         }
1936         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1937                                      msecs_to_jiffies(dwell));
1938         hwsim->scan_chan_idx++;
1939         mutex_unlock(&hwsim->mutex);
1940 }
1941
1942 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1943                                   struct ieee80211_vif *vif,
1944                                   struct ieee80211_scan_request *hw_req)
1945 {
1946         struct mac80211_hwsim_data *hwsim = hw->priv;
1947         struct cfg80211_scan_request *req = &hw_req->req;
1948
1949         mutex_lock(&hwsim->mutex);
1950         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1951                 mutex_unlock(&hwsim->mutex);
1952                 return -EBUSY;
1953         }
1954         hwsim->hw_scan_request = req;
1955         hwsim->hw_scan_vif = vif;
1956         hwsim->scan_chan_idx = 0;
1957         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1958                 get_random_mask_addr(hwsim->scan_addr,
1959                                      hw_req->req.mac_addr,
1960                                      hw_req->req.mac_addr_mask);
1961         else
1962                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1963         mutex_unlock(&hwsim->mutex);
1964
1965         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1966
1967         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1968
1969         return 0;
1970 }
1971
1972 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1973                                           struct ieee80211_vif *vif)
1974 {
1975         struct mac80211_hwsim_data *hwsim = hw->priv;
1976
1977         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1978
1979         cancel_delayed_work_sync(&hwsim->hw_scan);
1980
1981         mutex_lock(&hwsim->mutex);
1982         ieee80211_scan_completed(hwsim->hw, true);
1983         hwsim->tmp_chan = NULL;
1984         hwsim->hw_scan_request = NULL;
1985         hwsim->hw_scan_vif = NULL;
1986         mutex_unlock(&hwsim->mutex);
1987 }
1988
1989 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1990                                    struct ieee80211_vif *vif,
1991                                    const u8 *mac_addr)
1992 {
1993         struct mac80211_hwsim_data *hwsim = hw->priv;
1994
1995         mutex_lock(&hwsim->mutex);
1996
1997         if (hwsim->scanning) {
1998                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1999                 goto out;
2000         }
2001
2002         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2003
2004         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2005         hwsim->scanning = true;
2006
2007 out:
2008         mutex_unlock(&hwsim->mutex);
2009 }
2010
2011 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2012                                             struct ieee80211_vif *vif)
2013 {
2014         struct mac80211_hwsim_data *hwsim = hw->priv;
2015
2016         mutex_lock(&hwsim->mutex);
2017
2018         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2019         hwsim->scanning = false;
2020         eth_zero_addr(hwsim->scan_addr);
2021
2022         mutex_unlock(&hwsim->mutex);
2023 }
2024
2025 static void hw_roc_start(struct work_struct *work)
2026 {
2027         struct mac80211_hwsim_data *hwsim =
2028                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2029
2030         mutex_lock(&hwsim->mutex);
2031
2032         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2033         hwsim->tmp_chan = hwsim->roc_chan;
2034         ieee80211_ready_on_channel(hwsim->hw);
2035
2036         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2037                                      msecs_to_jiffies(hwsim->roc_duration));
2038
2039         mutex_unlock(&hwsim->mutex);
2040 }
2041
2042 static void hw_roc_done(struct work_struct *work)
2043 {
2044         struct mac80211_hwsim_data *hwsim =
2045                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2046
2047         mutex_lock(&hwsim->mutex);
2048         ieee80211_remain_on_channel_expired(hwsim->hw);
2049         hwsim->tmp_chan = NULL;
2050         mutex_unlock(&hwsim->mutex);
2051
2052         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2053 }
2054
2055 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2056                               struct ieee80211_vif *vif,
2057                               struct ieee80211_channel *chan,
2058                               int duration,
2059                               enum ieee80211_roc_type type)
2060 {
2061         struct mac80211_hwsim_data *hwsim = hw->priv;
2062
2063         mutex_lock(&hwsim->mutex);
2064         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2065                 mutex_unlock(&hwsim->mutex);
2066                 return -EBUSY;
2067         }
2068
2069         hwsim->roc_chan = chan;
2070         hwsim->roc_duration = duration;
2071         mutex_unlock(&hwsim->mutex);
2072
2073         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2074                     chan->center_freq, duration);
2075         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2076
2077         return 0;
2078 }
2079
2080 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2081 {
2082         struct mac80211_hwsim_data *hwsim = hw->priv;
2083
2084         cancel_delayed_work_sync(&hwsim->roc_start);
2085         cancel_delayed_work_sync(&hwsim->roc_done);
2086
2087         mutex_lock(&hwsim->mutex);
2088         hwsim->tmp_chan = NULL;
2089         mutex_unlock(&hwsim->mutex);
2090
2091         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2092
2093         return 0;
2094 }
2095
2096 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2097                                       struct ieee80211_chanctx_conf *ctx)
2098 {
2099         hwsim_set_chanctx_magic(ctx);
2100         wiphy_debug(hw->wiphy,
2101                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2102                     ctx->def.chan->center_freq, ctx->def.width,
2103                     ctx->def.center_freq1, ctx->def.center_freq2);
2104         return 0;
2105 }
2106
2107 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2108                                           struct ieee80211_chanctx_conf *ctx)
2109 {
2110         wiphy_debug(hw->wiphy,
2111                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2112                     ctx->def.chan->center_freq, ctx->def.width,
2113                     ctx->def.center_freq1, ctx->def.center_freq2);
2114         hwsim_check_chanctx_magic(ctx);
2115         hwsim_clear_chanctx_magic(ctx);
2116 }
2117
2118 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2119                                           struct ieee80211_chanctx_conf *ctx,
2120                                           u32 changed)
2121 {
2122         hwsim_check_chanctx_magic(ctx);
2123         wiphy_debug(hw->wiphy,
2124                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2125                     ctx->def.chan->center_freq, ctx->def.width,
2126                     ctx->def.center_freq1, ctx->def.center_freq2);
2127 }
2128
2129 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2130                                              struct ieee80211_vif *vif,
2131                                              struct ieee80211_chanctx_conf *ctx)
2132 {
2133         hwsim_check_magic(vif);
2134         hwsim_check_chanctx_magic(ctx);
2135
2136         return 0;
2137 }
2138
2139 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2140                                                 struct ieee80211_vif *vif,
2141                                                 struct ieee80211_chanctx_conf *ctx)
2142 {
2143         hwsim_check_magic(vif);
2144         hwsim_check_chanctx_magic(ctx);
2145 }
2146
2147 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2148         "tx_pkts_nic",
2149         "tx_bytes_nic",
2150         "rx_pkts_nic",
2151         "rx_bytes_nic",
2152         "d_tx_dropped",
2153         "d_tx_failed",
2154         "d_ps_mode",
2155         "d_group",
2156         "d_tx_power",
2157 };
2158
2159 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2160
2161 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2162                                           struct ieee80211_vif *vif,
2163                                           u32 sset, u8 *data)
2164 {
2165         if (sset == ETH_SS_STATS)
2166                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2167                        sizeof(mac80211_hwsim_gstrings_stats));
2168 }
2169
2170 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2171                                             struct ieee80211_vif *vif, int sset)
2172 {
2173         if (sset == ETH_SS_STATS)
2174                 return MAC80211_HWSIM_SSTATS_LEN;
2175         return 0;
2176 }
2177
2178 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2179                                         struct ieee80211_vif *vif,
2180                                         struct ethtool_stats *stats, u64 *data)
2181 {
2182         struct mac80211_hwsim_data *ar = hw->priv;
2183         int i = 0;
2184
2185         data[i++] = ar->tx_pkts;
2186         data[i++] = ar->tx_bytes;
2187         data[i++] = ar->rx_pkts;
2188         data[i++] = ar->rx_bytes;
2189         data[i++] = ar->tx_dropped;
2190         data[i++] = ar->tx_failed;
2191         data[i++] = ar->ps;
2192         data[i++] = ar->group;
2193         data[i++] = ar->power_level;
2194
2195         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2196 }
2197
2198 static const struct ieee80211_ops mac80211_hwsim_ops = {
2199         .tx = mac80211_hwsim_tx,
2200         .start = mac80211_hwsim_start,
2201         .stop = mac80211_hwsim_stop,
2202         .add_interface = mac80211_hwsim_add_interface,
2203         .change_interface = mac80211_hwsim_change_interface,
2204         .remove_interface = mac80211_hwsim_remove_interface,
2205         .config = mac80211_hwsim_config,
2206         .configure_filter = mac80211_hwsim_configure_filter,
2207         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2208         .sta_add = mac80211_hwsim_sta_add,
2209         .sta_remove = mac80211_hwsim_sta_remove,
2210         .sta_notify = mac80211_hwsim_sta_notify,
2211         .set_tim = mac80211_hwsim_set_tim,
2212         .conf_tx = mac80211_hwsim_conf_tx,
2213         .get_survey = mac80211_hwsim_get_survey,
2214         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2215         .ampdu_action = mac80211_hwsim_ampdu_action,
2216         .sw_scan_start = mac80211_hwsim_sw_scan,
2217         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2218         .flush = mac80211_hwsim_flush,
2219         .get_tsf = mac80211_hwsim_get_tsf,
2220         .set_tsf = mac80211_hwsim_set_tsf,
2221         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2222         .get_et_stats = mac80211_hwsim_get_et_stats,
2223         .get_et_strings = mac80211_hwsim_get_et_strings,
2224 };
2225
2226 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2227
2228 struct hwsim_new_radio_params {
2229         unsigned int channels;
2230         const char *reg_alpha2;
2231         const struct ieee80211_regdomain *regd;
2232         bool reg_strict;
2233         bool p2p_device;
2234         bool use_chanctx;
2235         bool destroy_on_close;
2236         const char *hwname;
2237         bool no_vif;
2238 };
2239
2240 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2241                                    struct genl_info *info)
2242 {
2243         if (info)
2244                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2245                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2246         else
2247                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2248                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2249 }
2250
2251 static int append_radio_msg(struct sk_buff *skb, int id,
2252                             struct hwsim_new_radio_params *param)
2253 {
2254         int ret;
2255
2256         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2257         if (ret < 0)
2258                 return ret;
2259
2260         if (param->channels) {
2261                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2262                 if (ret < 0)
2263                         return ret;
2264         }
2265
2266         if (param->reg_alpha2) {
2267                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2268                               param->reg_alpha2);
2269                 if (ret < 0)
2270                         return ret;
2271         }
2272
2273         if (param->regd) {
2274                 int i;
2275
2276                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2277                         if (hwsim_world_regdom_custom[i] != param->regd)
2278                                 continue;
2279
2280                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2281                         if (ret < 0)
2282                                 return ret;
2283                         break;
2284                 }
2285         }
2286
2287         if (param->reg_strict) {
2288                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2289                 if (ret < 0)
2290                         return ret;
2291         }
2292
2293         if (param->p2p_device) {
2294                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2295                 if (ret < 0)
2296                         return ret;
2297         }
2298
2299         if (param->use_chanctx) {
2300                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2301                 if (ret < 0)
2302                         return ret;
2303         }
2304
2305         if (param->hwname) {
2306                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2307                               strlen(param->hwname), param->hwname);
2308                 if (ret < 0)
2309                         return ret;
2310         }
2311
2312         return 0;
2313 }
2314
2315 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2316                                   struct hwsim_new_radio_params *param)
2317 {
2318         struct sk_buff *mcast_skb;
2319         void *data;
2320
2321         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2322         if (!mcast_skb)
2323                 return;
2324
2325         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2326                            HWSIM_CMD_NEW_RADIO);
2327         if (!data)
2328                 goto out_err;
2329
2330         if (append_radio_msg(mcast_skb, id, param) < 0)
2331                 goto out_err;
2332
2333         genlmsg_end(mcast_skb, data);
2334
2335         hwsim_mcast_config_msg(mcast_skb, info);
2336         return;
2337
2338 out_err:
2339         genlmsg_cancel(mcast_skb, data);
2340         nlmsg_free(mcast_skb);
2341 }
2342
2343 static int mac80211_hwsim_new_radio(struct genl_info *info,
2344                                     struct hwsim_new_radio_params *param)
2345 {
2346         int err;
2347         u8 addr[ETH_ALEN];
2348         struct mac80211_hwsim_data *data;
2349         struct ieee80211_hw *hw;
2350         enum nl80211_band band;
2351         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2352         int idx;
2353
2354         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2355                 return -EINVAL;
2356
2357         spin_lock_bh(&hwsim_radio_lock);
2358         idx = hwsim_radio_idx++;
2359         spin_unlock_bh(&hwsim_radio_lock);
2360
2361         if (param->use_chanctx)
2362                 ops = &mac80211_hwsim_mchan_ops;
2363         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2364         if (!hw) {
2365                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2366                 err = -ENOMEM;
2367                 goto failed;
2368         }
2369         data = hw->priv;
2370         data->hw = hw;
2371
2372         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2373         if (IS_ERR(data->dev)) {
2374                 printk(KERN_DEBUG
2375                        "mac80211_hwsim: device_create failed (%ld)\n",
2376                        PTR_ERR(data->dev));
2377                 err = -ENOMEM;
2378                 goto failed_drvdata;
2379         }
2380         data->dev->driver = &mac80211_hwsim_driver.driver;
2381         err = device_bind_driver(data->dev);
2382         if (err != 0) {
2383                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2384                        err);
2385                 goto failed_bind;
2386         }
2387
2388         skb_queue_head_init(&data->pending);
2389
2390         SET_IEEE80211_DEV(hw, data->dev);
2391         eth_zero_addr(addr);
2392         addr[0] = 0x02;
2393         addr[3] = idx >> 8;
2394         addr[4] = idx;
2395         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2396         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2397         data->addresses[1].addr[0] |= 0x40;
2398         hw->wiphy->n_addresses = 2;
2399         hw->wiphy->addresses = data->addresses;
2400
2401         data->channels = param->channels;
2402         data->use_chanctx = param->use_chanctx;
2403         data->idx = idx;
2404         data->destroy_on_close = param->destroy_on_close;
2405         if (info)
2406                 data->portid = info->snd_portid;
2407
2408         if (data->use_chanctx) {
2409                 hw->wiphy->max_scan_ssids = 255;
2410                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2411                 hw->wiphy->max_remain_on_channel_duration = 1000;
2412                 /* For channels > 1 DFS is not allowed */
2413                 hw->wiphy->n_iface_combinations = 1;
2414                 hw->wiphy->iface_combinations = &data->if_combination;
2415                 if (param->p2p_device)
2416                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2417                 else
2418                         data->if_combination = hwsim_if_comb[0];
2419                 data->if_combination.num_different_channels = data->channels;
2420         } else if (param->p2p_device) {
2421                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2422                 hw->wiphy->n_iface_combinations =
2423                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2424         } else {
2425                 hw->wiphy->iface_combinations = hwsim_if_comb;
2426                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2427         }
2428
2429         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2430         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2431         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2432
2433         hw->queues = 5;
2434         hw->offchannel_tx_hw_queue = 4;
2435         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2436                                      BIT(NL80211_IFTYPE_AP) |
2437                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2438                                      BIT(NL80211_IFTYPE_P2P_GO) |
2439                                      BIT(NL80211_IFTYPE_ADHOC) |
2440                                      BIT(NL80211_IFTYPE_MESH_POINT);
2441
2442         if (param->p2p_device)
2443                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2444
2445         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2446         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2447         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2448         ieee80211_hw_set(hw, QUEUE_CONTROL);
2449         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2450         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2451         ieee80211_hw_set(hw, MFP_CAPABLE);
2452         ieee80211_hw_set(hw, SIGNAL_DBM);
2453         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2454         if (rctbl)
2455                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2456
2457         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2458                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2459                             WIPHY_FLAG_AP_UAPSD |
2460                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2461         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2462                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2463                                NL80211_FEATURE_STATIC_SMPS |
2464                                NL80211_FEATURE_DYNAMIC_SMPS |
2465                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2466         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2467
2468         /* ask mac80211 to reserve space for magic */
2469         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2470         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2471         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2472
2473         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2474                 sizeof(hwsim_channels_2ghz));
2475         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2476                 sizeof(hwsim_channels_5ghz));
2477         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2478
2479         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2480                 struct ieee80211_supported_band *sband = &data->bands[band];
2481                 switch (band) {
2482                 case NL80211_BAND_2GHZ:
2483                         sband->channels = data->channels_2ghz;
2484                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2485                         sband->bitrates = data->rates;
2486                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2487                         break;
2488                 case NL80211_BAND_5GHZ:
2489                         sband->channels = data->channels_5ghz;
2490                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2491                         sband->bitrates = data->rates + 4;
2492                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2493
2494                         sband->vht_cap.vht_supported = true;
2495                         sband->vht_cap.cap =
2496                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2497                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2498                                 IEEE80211_VHT_CAP_RXLDPC |
2499                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2500                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2501                                 IEEE80211_VHT_CAP_TXSTBC |
2502                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2503                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2504                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2505                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2506                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2507                         sband->vht_cap.vht_mcs.rx_mcs_map =
2508                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2509                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2510                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2511                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2512                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2513                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2514                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2515                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2516                         sband->vht_cap.vht_mcs.tx_mcs_map =
2517                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2518                         break;
2519                 default:
2520                         continue;
2521                 }
2522
2523                 sband->ht_cap.ht_supported = true;
2524                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2525                                     IEEE80211_HT_CAP_GRN_FLD |
2526                                     IEEE80211_HT_CAP_SGI_20 |
2527                                     IEEE80211_HT_CAP_SGI_40 |
2528                                     IEEE80211_HT_CAP_DSSSCCK40;
2529                 sband->ht_cap.ampdu_factor = 0x3;
2530                 sband->ht_cap.ampdu_density = 0x6;
2531                 memset(&sband->ht_cap.mcs, 0,
2532                        sizeof(sband->ht_cap.mcs));
2533                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2534                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2535                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2536
2537                 hw->wiphy->bands[band] = sband;
2538         }
2539
2540         /* By default all radios belong to the first group */
2541         data->group = 1;
2542         mutex_init(&data->mutex);
2543
2544         /* Enable frame retransmissions for lossy channels */
2545         hw->max_rates = 4;
2546         hw->max_rate_tries = 11;
2547
2548         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2549         hw->wiphy->n_vendor_commands =
2550                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2551         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2552         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2553
2554         if (param->reg_strict)
2555                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2556         if (param->regd) {
2557                 data->regd = param->regd;
2558                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2559                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2560                 /* give the regulatory workqueue a chance to run */
2561                 schedule_timeout_interruptible(1);
2562         }
2563
2564         if (param->no_vif)
2565                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2566
2567         err = ieee80211_register_hw(hw);
2568         if (err < 0) {
2569                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2570                        err);
2571                 goto failed_hw;
2572         }
2573
2574         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2575
2576         if (param->reg_alpha2) {
2577                 data->alpha2[0] = param->reg_alpha2[0];
2578                 data->alpha2[1] = param->reg_alpha2[1];
2579                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2580         }
2581
2582         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2583         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2584         debugfs_create_file("group", 0666, data->debugfs, data,
2585                             &hwsim_fops_group);
2586         if (!data->use_chanctx)
2587                 debugfs_create_file("dfs_simulate_radar", 0222,
2588                                     data->debugfs,
2589                                     data, &hwsim_simulate_radar);
2590
2591         tasklet_hrtimer_init(&data->beacon_timer,
2592                              mac80211_hwsim_beacon,
2593                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2594
2595         spin_lock_bh(&hwsim_radio_lock);
2596         list_add_tail(&data->list, &hwsim_radios);
2597         spin_unlock_bh(&hwsim_radio_lock);
2598
2599         if (idx > 0)
2600                 hwsim_mcast_new_radio(idx, info, param);
2601
2602         return idx;
2603
2604 failed_hw:
2605         device_release_driver(data->dev);
2606 failed_bind:
2607         device_unregister(data->dev);
2608 failed_drvdata:
2609         ieee80211_free_hw(hw);
2610 failed:
2611         return err;
2612 }
2613
2614 static void hwsim_mcast_del_radio(int id, const char *hwname,
2615                                   struct genl_info *info)
2616 {
2617         struct sk_buff *skb;
2618         void *data;
2619         int ret;
2620
2621         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2622         if (!skb)
2623                 return;
2624
2625         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2626                            HWSIM_CMD_DEL_RADIO);
2627         if (!data)
2628                 goto error;
2629
2630         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2631         if (ret < 0)
2632                 goto error;
2633
2634         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2635                       hwname);
2636         if (ret < 0)
2637                 goto error;
2638
2639         genlmsg_end(skb, data);
2640
2641         hwsim_mcast_config_msg(skb, info);
2642
2643         return;
2644
2645 error:
2646         nlmsg_free(skb);
2647 }
2648
2649 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2650                                      const char *hwname,
2651                                      struct genl_info *info)
2652 {
2653         hwsim_mcast_del_radio(data->idx, hwname, info);
2654         debugfs_remove_recursive(data->debugfs);
2655         ieee80211_unregister_hw(data->hw);
2656         device_release_driver(data->dev);
2657         device_unregister(data->dev);
2658         ieee80211_free_hw(data->hw);
2659 }
2660
2661 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2662                                     struct mac80211_hwsim_data *data,
2663                                     u32 portid, u32 seq,
2664                                     struct netlink_callback *cb, int flags)
2665 {
2666         void *hdr;
2667         struct hwsim_new_radio_params param = { };
2668         int res = -EMSGSIZE;
2669
2670         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2671                           HWSIM_CMD_GET_RADIO);
2672         if (!hdr)
2673                 return -EMSGSIZE;
2674
2675         if (cb)
2676                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2677
2678         if (data->alpha2[0] && data->alpha2[1])
2679                 param.reg_alpha2 = data->alpha2;
2680
2681         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2682                                         REGULATORY_STRICT_REG);
2683         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2684                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2685         param.use_chanctx = data->use_chanctx;
2686         param.regd = data->regd;
2687         param.channels = data->channels;
2688         param.hwname = wiphy_name(data->hw->wiphy);
2689
2690         res = append_radio_msg(skb, data->idx, &param);
2691         if (res < 0)
2692                 goto out_err;
2693
2694         genlmsg_end(skb, hdr);
2695         return 0;
2696
2697 out_err:
2698         genlmsg_cancel(skb, hdr);
2699         return res;
2700 }
2701
2702 static void mac80211_hwsim_free(void)
2703 {
2704         struct mac80211_hwsim_data *data;
2705
2706         spin_lock_bh(&hwsim_radio_lock);
2707         while ((data = list_first_entry_or_null(&hwsim_radios,
2708                                                 struct mac80211_hwsim_data,
2709                                                 list))) {
2710                 list_del(&data->list);
2711                 spin_unlock_bh(&hwsim_radio_lock);
2712                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2713                                          NULL);
2714                 spin_lock_bh(&hwsim_radio_lock);
2715         }
2716         spin_unlock_bh(&hwsim_radio_lock);
2717         class_destroy(hwsim_class);
2718 }
2719
2720 static const struct net_device_ops hwsim_netdev_ops = {
2721         .ndo_start_xmit         = hwsim_mon_xmit,
2722         .ndo_change_mtu         = eth_change_mtu,
2723         .ndo_set_mac_address    = eth_mac_addr,
2724         .ndo_validate_addr      = eth_validate_addr,
2725 };
2726
2727 static void hwsim_mon_setup(struct net_device *dev)
2728 {
2729         dev->netdev_ops = &hwsim_netdev_ops;
2730         dev->destructor = free_netdev;
2731         ether_setup(dev);
2732         dev->priv_flags |= IFF_NO_QUEUE;
2733         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2734         eth_zero_addr(dev->dev_addr);
2735         dev->dev_addr[0] = 0x12;
2736 }
2737
2738 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2739 {
2740         struct mac80211_hwsim_data *data;
2741         bool _found = false;
2742
2743         spin_lock_bh(&hwsim_radio_lock);
2744         list_for_each_entry(data, &hwsim_radios, list) {
2745                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2746                         _found = true;
2747                         break;
2748                 }
2749         }
2750         spin_unlock_bh(&hwsim_radio_lock);
2751
2752         if (!_found)
2753                 return NULL;
2754
2755         return data;
2756 }
2757
2758 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2759                                            struct genl_info *info)
2760 {
2761
2762         struct ieee80211_hdr *hdr;
2763         struct mac80211_hwsim_data *data2;
2764         struct ieee80211_tx_info *txi;
2765         struct hwsim_tx_rate *tx_attempts;
2766         u64 ret_skb_cookie;
2767         struct sk_buff *skb, *tmp;
2768         const u8 *src;
2769         unsigned int hwsim_flags;
2770         int i;
2771         bool found = false;
2772
2773         if (info->snd_portid != wmediumd_portid)
2774                 return -EINVAL;
2775
2776         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2777             !info->attrs[HWSIM_ATTR_FLAGS] ||
2778             !info->attrs[HWSIM_ATTR_COOKIE] ||
2779             !info->attrs[HWSIM_ATTR_TX_INFO])
2780                 goto out;
2781
2782         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2783         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2784         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2785
2786         data2 = get_hwsim_data_ref_from_addr(src);
2787         if (!data2)
2788                 goto out;
2789
2790         /* look for the skb matching the cookie passed back from user */
2791         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2792                 u64 skb_cookie;
2793
2794                 txi = IEEE80211_SKB_CB(skb);
2795                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2796
2797                 if (skb_cookie == ret_skb_cookie) {
2798                         skb_unlink(skb, &data2->pending);
2799                         found = true;
2800                         break;
2801                 }
2802         }
2803
2804         /* not found */
2805         if (!found)
2806                 goto out;
2807
2808         /* Tx info received because the frame was broadcasted on user space,
2809          so we get all the necessary info: tx attempts and skb control buff */
2810
2811         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2812                        info->attrs[HWSIM_ATTR_TX_INFO]);
2813
2814         /* now send back TX status */
2815         txi = IEEE80211_SKB_CB(skb);
2816
2817         ieee80211_tx_info_clear_status(txi);
2818
2819         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2820                 txi->status.rates[i].idx = tx_attempts[i].idx;
2821                 txi->status.rates[i].count = tx_attempts[i].count;
2822                 /*txi->status.rates[i].flags = 0;*/
2823         }
2824
2825         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2826
2827         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2828            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2829                 if (skb->len >= 16) {
2830                         hdr = (struct ieee80211_hdr *) skb->data;
2831                         mac80211_hwsim_monitor_ack(data2->channel,
2832                                                    hdr->addr2);
2833                 }
2834                 txi->flags |= IEEE80211_TX_STAT_ACK;
2835         }
2836         ieee80211_tx_status_irqsafe(data2->hw, skb);
2837         return 0;
2838 out:
2839         return -EINVAL;
2840
2841 }
2842
2843 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2844                                           struct genl_info *info)
2845 {
2846         struct mac80211_hwsim_data *data2;
2847         struct ieee80211_rx_status rx_status;
2848         const u8 *dst;
2849         int frame_data_len;
2850         void *frame_data;
2851         struct sk_buff *skb = NULL;
2852
2853         if (info->snd_portid != wmediumd_portid)
2854                 return -EINVAL;
2855
2856         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2857             !info->attrs[HWSIM_ATTR_FRAME] ||
2858             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2859             !info->attrs[HWSIM_ATTR_SIGNAL])
2860                 goto out;
2861
2862         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2863         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2864         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2865
2866         /* Allocate new skb here */
2867         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2868         if (skb == NULL)
2869                 goto err;
2870
2871         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2872                 goto err;
2873
2874         /* Copy the data */
2875         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2876
2877         data2 = get_hwsim_data_ref_from_addr(dst);
2878         if (!data2)
2879                 goto out;
2880
2881         /* check if radio is configured properly */
2882
2883         if (data2->idle || !data2->started)
2884                 goto out;
2885
2886         /* A frame is received from user space */
2887         memset(&rx_status, 0, sizeof(rx_status));
2888         if (info->attrs[HWSIM_ATTR_FREQ]) {
2889                 /* throw away off-channel packets, but allow both the temporary
2890                  * ("hw" scan/remain-on-channel) and regular channel, since the
2891                  * internal datapath also allows this
2892                  */
2893                 mutex_lock(&data2->mutex);
2894                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2895
2896                 if (rx_status.freq != data2->channel->center_freq &&
2897                     (!data2->tmp_chan ||
2898                      rx_status.freq != data2->tmp_chan->center_freq)) {
2899                         mutex_unlock(&data2->mutex);
2900                         goto out;
2901                 }
2902                 mutex_unlock(&data2->mutex);
2903         } else {
2904                 rx_status.freq = data2->channel->center_freq;
2905         }
2906
2907         rx_status.band = data2->channel->band;
2908         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2909         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2910
2911         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2912         data2->rx_pkts++;
2913         data2->rx_bytes += skb->len;
2914         ieee80211_rx_irqsafe(data2->hw, skb);
2915
2916         return 0;
2917 err:
2918         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2919 out:
2920         dev_kfree_skb(skb);
2921         return -EINVAL;
2922 }
2923
2924 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2925                                       struct genl_info *info)
2926 {
2927         struct mac80211_hwsim_data *data;
2928         int chans = 1;
2929
2930         spin_lock_bh(&hwsim_radio_lock);
2931         list_for_each_entry(data, &hwsim_radios, list)
2932                 chans = max(chans, data->channels);
2933         spin_unlock_bh(&hwsim_radio_lock);
2934
2935         /* In the future we should revise the userspace API and allow it
2936          * to set a flag that it does support multi-channel, then we can
2937          * let this pass conditionally on the flag.
2938          * For current userspace, prohibit it since it won't work right.
2939          */
2940         if (chans > 1)
2941                 return -EOPNOTSUPP;
2942
2943         if (wmediumd_portid)
2944                 return -EBUSY;
2945
2946         wmediumd_portid = info->snd_portid;
2947
2948         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2949                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2950
2951         return 0;
2952 }
2953
2954 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2955 {
2956         struct hwsim_new_radio_params param = { 0 };
2957
2958         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2959         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2960         param.channels = channels;
2961         param.destroy_on_close =
2962                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2963
2964         if (info->attrs[HWSIM_ATTR_CHANNELS])
2965                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2966
2967         if (info->attrs[HWSIM_ATTR_NO_VIF])
2968                 param.no_vif = true;
2969
2970         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2971                 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2972
2973         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2974                 param.use_chanctx = true;
2975         else
2976                 param.use_chanctx = (param.channels > 1);
2977
2978         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2979                 param.reg_alpha2 =
2980                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2981
2982         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2983                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2984
2985                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2986                         return -EINVAL;
2987                 param.regd = hwsim_world_regdom_custom[idx];
2988         }
2989
2990         return mac80211_hwsim_new_radio(info, &param);
2991 }
2992
2993 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2994 {
2995         struct mac80211_hwsim_data *data;
2996         s64 idx = -1;
2997         const char *hwname = NULL;
2998
2999         if (info->attrs[HWSIM_ATTR_RADIO_ID])
3000                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3001         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3002                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3003         else
3004                 return -EINVAL;
3005
3006         spin_lock_bh(&hwsim_radio_lock);
3007         list_for_each_entry(data, &hwsim_radios, list) {
3008                 if (idx >= 0) {
3009                         if (data->idx != idx)
3010                                 continue;
3011                 } else {
3012                         if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3013                                 continue;
3014                 }
3015
3016                 list_del(&data->list);
3017                 spin_unlock_bh(&hwsim_radio_lock);
3018                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3019                                          info);
3020                 return 0;
3021         }
3022         spin_unlock_bh(&hwsim_radio_lock);
3023
3024         return -ENODEV;
3025 }
3026
3027 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3028 {
3029         struct mac80211_hwsim_data *data;
3030         struct sk_buff *skb;
3031         int idx, res = -ENODEV;
3032
3033         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3034                 return -EINVAL;
3035         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3036
3037         spin_lock_bh(&hwsim_radio_lock);
3038         list_for_each_entry(data, &hwsim_radios, list) {
3039                 if (data->idx != idx)
3040                         continue;
3041
3042                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3043                 if (!skb) {
3044                         res = -ENOMEM;
3045                         goto out_err;
3046                 }
3047
3048                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3049                                                info->snd_seq, NULL, 0);
3050                 if (res < 0) {
3051                         nlmsg_free(skb);
3052                         goto out_err;
3053                 }
3054
3055                 genlmsg_reply(skb, info);
3056                 break;
3057         }
3058
3059 out_err:
3060         spin_unlock_bh(&hwsim_radio_lock);
3061
3062         return res;
3063 }
3064
3065 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3066                                struct netlink_callback *cb)
3067 {
3068         int idx = cb->args[0];
3069         struct mac80211_hwsim_data *data = NULL;
3070         int res;
3071
3072         spin_lock_bh(&hwsim_radio_lock);
3073
3074         if (idx == hwsim_radio_idx)
3075                 goto done;
3076
3077         list_for_each_entry(data, &hwsim_radios, list) {
3078                 if (data->idx < idx)
3079                         continue;
3080
3081                 res = mac80211_hwsim_get_radio(skb, data,
3082                                                NETLINK_CB(cb->skb).portid,
3083                                                cb->nlh->nlmsg_seq, cb,
3084                                                NLM_F_MULTI);
3085                 if (res < 0)
3086                         break;
3087
3088                 idx = data->idx + 1;
3089         }
3090
3091         cb->args[0] = idx;
3092
3093 done:
3094         spin_unlock_bh(&hwsim_radio_lock);
3095         return skb->len;
3096 }
3097
3098 /* Generic Netlink operations array */
3099 static const struct genl_ops hwsim_ops[] = {
3100         {
3101                 .cmd = HWSIM_CMD_REGISTER,
3102                 .policy = hwsim_genl_policy,
3103                 .doit = hwsim_register_received_nl,
3104                 .flags = GENL_ADMIN_PERM,
3105         },
3106         {
3107                 .cmd = HWSIM_CMD_FRAME,
3108                 .policy = hwsim_genl_policy,
3109                 .doit = hwsim_cloned_frame_received_nl,
3110         },
3111         {
3112                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3113                 .policy = hwsim_genl_policy,
3114                 .doit = hwsim_tx_info_frame_received_nl,
3115         },
3116         {
3117                 .cmd = HWSIM_CMD_NEW_RADIO,
3118                 .policy = hwsim_genl_policy,
3119                 .doit = hwsim_new_radio_nl,
3120                 .flags = GENL_ADMIN_PERM,
3121         },
3122         {
3123                 .cmd = HWSIM_CMD_DEL_RADIO,
3124                 .policy = hwsim_genl_policy,
3125                 .doit = hwsim_del_radio_nl,
3126                 .flags = GENL_ADMIN_PERM,
3127         },
3128         {
3129                 .cmd = HWSIM_CMD_GET_RADIO,
3130                 .policy = hwsim_genl_policy,
3131                 .doit = hwsim_get_radio_nl,
3132                 .dumpit = hwsim_dump_radio_nl,
3133         },
3134 };
3135
3136 static void destroy_radio(struct work_struct *work)
3137 {
3138         struct mac80211_hwsim_data *data =
3139                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3140
3141         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3142 }
3143
3144 static void remove_user_radios(u32 portid)
3145 {
3146         struct mac80211_hwsim_data *entry, *tmp;
3147
3148         spin_lock_bh(&hwsim_radio_lock);
3149         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3150                 if (entry->destroy_on_close && entry->portid == portid) {
3151                         list_del(&entry->list);
3152                         INIT_WORK(&entry->destroy_work, destroy_radio);
3153                         schedule_work(&entry->destroy_work);
3154                 }
3155         }
3156         spin_unlock_bh(&hwsim_radio_lock);
3157 }
3158
3159 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3160                                          unsigned long state,
3161                                          void *_notify)
3162 {
3163         struct netlink_notify *notify = _notify;
3164
3165         if (state != NETLINK_URELEASE)
3166                 return NOTIFY_DONE;
3167
3168         remove_user_radios(notify->portid);
3169
3170         if (notify->portid == wmediumd_portid) {
3171                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3172                        " socket, switching to perfect channel medium\n");
3173                 wmediumd_portid = 0;
3174         }
3175         return NOTIFY_DONE;
3176
3177 }
3178
3179 static struct notifier_block hwsim_netlink_notifier = {
3180         .notifier_call = mac80211_hwsim_netlink_notify,
3181 };
3182
3183 static int hwsim_init_netlink(void)
3184 {
3185         int rc;
3186
3187         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3188
3189         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3190                                                   hwsim_ops,
3191                                                   hwsim_mcgrps);
3192         if (rc)
3193                 goto failure;
3194
3195         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3196         if (rc) {
3197                 genl_unregister_family(&hwsim_genl_family);
3198                 goto failure;
3199         }
3200
3201         return 0;
3202
3203 failure:
3204         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3205         return -EINVAL;
3206 }
3207
3208 static void hwsim_exit_netlink(void)
3209 {
3210         /* unregister the notifier */
3211         netlink_unregister_notifier(&hwsim_netlink_notifier);
3212         /* unregister the family */
3213         genl_unregister_family(&hwsim_genl_family);
3214 }
3215
3216 static int __init init_mac80211_hwsim(void)
3217 {
3218         int i, err;
3219
3220         if (radios < 0 || radios > 100)
3221                 return -EINVAL;
3222
3223         if (channels < 1)
3224                 return -EINVAL;
3225
3226         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3227         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3228         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3229         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3230         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3231         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3232         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3233         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3234         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3235         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3236         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3237                 mac80211_hwsim_assign_vif_chanctx;
3238         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3239                 mac80211_hwsim_unassign_vif_chanctx;
3240
3241         spin_lock_init(&hwsim_radio_lock);
3242         INIT_LIST_HEAD(&hwsim_radios);
3243
3244         err = platform_driver_register(&mac80211_hwsim_driver);
3245         if (err)
3246                 return err;
3247
3248         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3249         if (IS_ERR(hwsim_class)) {
3250                 err = PTR_ERR(hwsim_class);
3251                 goto out_unregister_driver;
3252         }
3253
3254         err = hwsim_init_netlink();
3255         if (err < 0)
3256                 goto out_unregister_driver;
3257
3258         for (i = 0; i < radios; i++) {
3259                 struct hwsim_new_radio_params param = { 0 };
3260
3261                 param.channels = channels;
3262
3263                 switch (regtest) {
3264                 case HWSIM_REGTEST_DIFF_COUNTRY:
3265                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3266                                 param.reg_alpha2 = hwsim_alpha2s[i];
3267                         break;
3268                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3269                         if (!i)
3270                                 param.reg_alpha2 = hwsim_alpha2s[0];
3271                         break;
3272                 case HWSIM_REGTEST_STRICT_ALL:
3273                         param.reg_strict = true;
3274                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3275                         param.reg_alpha2 = hwsim_alpha2s[0];
3276                         break;
3277                 case HWSIM_REGTEST_WORLD_ROAM:
3278                         if (i == 0)
3279                                 param.regd = &hwsim_world_regdom_custom_01;
3280                         break;
3281                 case HWSIM_REGTEST_CUSTOM_WORLD:
3282                         param.regd = &hwsim_world_regdom_custom_01;
3283                         break;
3284                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3285                         if (i == 0)
3286                                 param.regd = &hwsim_world_regdom_custom_01;
3287                         else if (i == 1)
3288                                 param.regd = &hwsim_world_regdom_custom_02;
3289                         break;
3290                 case HWSIM_REGTEST_STRICT_FOLLOW:
3291                         if (i == 0) {
3292                                 param.reg_strict = true;
3293                                 param.reg_alpha2 = hwsim_alpha2s[0];
3294                         }
3295                         break;
3296                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3297                         if (i == 0) {
3298                                 param.reg_strict = true;
3299                                 param.reg_alpha2 = hwsim_alpha2s[0];
3300                         } else if (i == 1) {
3301                                 param.reg_alpha2 = hwsim_alpha2s[1];
3302                         }
3303                         break;
3304                 case HWSIM_REGTEST_ALL:
3305                         switch (i) {
3306                         case 0:
3307                                 param.regd = &hwsim_world_regdom_custom_01;
3308                                 break;
3309                         case 1:
3310                                 param.regd = &hwsim_world_regdom_custom_02;
3311                                 break;
3312                         case 2:
3313                                 param.reg_alpha2 = hwsim_alpha2s[0];
3314                                 break;
3315                         case 3:
3316                                 param.reg_alpha2 = hwsim_alpha2s[1];
3317                                 break;
3318                         case 4:
3319                                 param.reg_strict = true;
3320                                 param.reg_alpha2 = hwsim_alpha2s[2];
3321                                 break;
3322                         }
3323                         break;
3324                 default:
3325                         break;
3326                 }
3327
3328                 param.p2p_device = support_p2p_device;
3329                 param.use_chanctx = channels > 1;
3330
3331                 err = mac80211_hwsim_new_radio(NULL, &param);
3332                 if (err < 0)
3333                         goto out_free_radios;
3334         }
3335
3336         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3337                                  hwsim_mon_setup);
3338         if (hwsim_mon == NULL) {
3339                 err = -ENOMEM;
3340                 goto out_free_radios;
3341         }
3342
3343         rtnl_lock();
3344         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3345         if (err < 0) {
3346                 rtnl_unlock();
3347                 goto out_free_radios;
3348         }
3349
3350         err = register_netdevice(hwsim_mon);
3351         if (err < 0) {
3352                 rtnl_unlock();
3353                 goto out_free_mon;
3354         }
3355         rtnl_unlock();
3356
3357         return 0;
3358
3359 out_free_mon:
3360         free_netdev(hwsim_mon);
3361 out_free_radios:
3362         mac80211_hwsim_free();
3363 out_unregister_driver:
3364         platform_driver_unregister(&mac80211_hwsim_driver);
3365         return err;
3366 }
3367 module_init(init_mac80211_hwsim);
3368
3369 static void __exit exit_mac80211_hwsim(void)
3370 {
3371         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3372
3373         hwsim_exit_netlink();
3374
3375         mac80211_hwsim_free();
3376         unregister_netdev(hwsim_mon);
3377         platform_driver_unregister(&mac80211_hwsim_driver);
3378 }
3379 module_exit(exit_mac80211_hwsim);