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 = IEEE80211_BAND_2GHZ, \
 259         .center_freq = (_freq), \
 260         .hw_value = (_freq), \
 261         .max_power = 20, \
 262 }
 263
 264 #define CHAN5G(_freq) { \
 265         .band = IEEE80211_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[IEEE80211_NUM_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 (!netif_running(hwsim_mon))
 818                 return;
 819
 820         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 821         if (skb == NULL)
 822                 return;
 823
 824         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 825         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 826         hdr->hdr.it_pad = 0;
 827         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 828         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 829                                           (1 << IEEE80211_RADIOTAP_RATE) |
 830                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 831                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 832         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 833         hdr->rt_flags = 0;
 834         hdr->rt_rate = txrate->bitrate / 5;
 835         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 836         flags = IEEE80211_CHAN_2GHZ;
 837         if (txrate->flags & IEEE80211_RATE_ERP_G)
 838                 flags |= IEEE80211_CHAN_OFDM;
 839         else
 840                 flags |= IEEE80211_CHAN_CCK;
 841         hdr->rt_chbitmask = cpu_to_le16(flags);
 842
 843         skb->dev = hwsim_mon;
 844         skb_set_mac_header(skb, 0);
 845         skb->ip_summed = CHECKSUM_UNNECESSARY;
 846         skb->pkt_type = PACKET_OTHERHOST;
 847         skb->protocol = htons(ETH_P_802_2);
 848         memset(skb->cb, 0, sizeof(skb->cb));
 849         netif_rx(skb);
 850 }
 851
 852
 853 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 854                                        const u8 *addr)
 855 {
 856         struct sk_buff *skb;
 857         struct hwsim_radiotap_ack_hdr *hdr;
 858         u16 flags;
 859         struct ieee80211_hdr *hdr11;
 860
 861         if (!netif_running(hwsim_mon))
 862                 return;
 863
 864         skb = dev_alloc_skb(100);
 865         if (skb == NULL)
 866                 return;
 867
 868         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 869         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 870         hdr->hdr.it_pad = 0;
 871         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 872         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 873                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 874         hdr->rt_flags = 0;
 875         hdr->pad = 0;
 876         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 877         flags = IEEE80211_CHAN_2GHZ;
 878         hdr->rt_chbitmask = cpu_to_le16(flags);
 879
 880         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 881         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 882                                            IEEE80211_STYPE_ACK);
 883         hdr11->duration_id = cpu_to_le16(0);
 884         memcpy(hdr11->addr1, addr, ETH_ALEN);
 885
 886         skb->dev = hwsim_mon;
 887         skb_set_mac_header(skb, 0);
 888         skb->ip_summed = CHECKSUM_UNNECESSARY;
 889         skb->pkt_type = PACKET_OTHERHOST;
 890         skb->protocol = htons(ETH_P_802_2);
 891         memset(skb->cb, 0, sizeof(skb->cb));
 892         netif_rx(skb);
 893 }
 894
 895 struct mac80211_hwsim_addr_match_data {
 896         u8 addr[ETH_ALEN];
 897         bool ret;
 898 };
 899
 900 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 901                                      struct ieee80211_vif *vif)
 902 {
 903         struct mac80211_hwsim_addr_match_data *md = data;
 904
 905         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 906                 md->ret = true;
 907 }
 908
 909 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 910                                       const u8 *addr)
 911 {
 912         struct mac80211_hwsim_addr_match_data md = {
 913                 .ret = false,
 914         };
 915
 916         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 917                 return true;
 918
 919         memcpy(md.addr, addr, ETH_ALEN);
 920
 921         ieee80211_iterate_active_interfaces_atomic(data->hw,
 922                                                    IEEE80211_IFACE_ITER_NORMAL,
 923                                                    mac80211_hwsim_addr_iter,
 924                                                    &md);
 925
 926         return md.ret;
 927 }
 928
 929 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 930                            struct sk_buff *skb)
 931 {
 932         switch (data->ps) {
 933         case PS_DISABLED:
 934                 return true;
 935         case PS_ENABLED:
 936                 return false;
 937         case PS_AUTO_POLL:
 938                 /* TODO: accept (some) Beacons by default and other frames only
 939                  * if pending PS-Poll has been sent */
 940                 return true;
 941         case PS_MANUAL_POLL:
 942                 /* Allow unicast frames to own address if there is a pending
 943                  * PS-Poll */
 944                 if (data->ps_poll_pending &&
 945                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 946                         data->ps_poll_pending = false;
 947                         return true;
 948                 }
 949                 return false;
 950         }
 951
 952         return true;
 953 }
 954
 955 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 956                                        struct sk_buff *my_skb,
 957                                        int dst_portid)
 958 {
 959         struct sk_buff *skb;
 960         struct mac80211_hwsim_data *data = hw->priv;
 961         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 962         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 963         void *msg_head;
 964         unsigned int hwsim_flags = 0;
 965         int i;
 966         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 967         uintptr_t cookie;
 968
 969         if (data->ps != PS_DISABLED)
 970                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 971         /* If the queue contains MAX_QUEUE skb's drop some */
 972         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 973                 /* Droping until WARN_QUEUE level */
 974                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
 975                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
 976                         data->tx_dropped++;
 977                 }
 978         }
 979
 980         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 981         if (skb == NULL)
 982                 goto nla_put_failure;
 983
 984         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 985                                HWSIM_CMD_FRAME);
 986         if (msg_head == NULL) {
 987                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 988                 goto nla_put_failure;
 989         }
 990
 991         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER, ETH_ALEN, hdr->addr2))
 992                 goto nla_put_failure;
 993
 994         /* We get the skb->data */
 995         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 996                 goto nla_put_failure;
 997
 998         /* We get the flags for this transmission, and we translate them to
 999            wmediumd flags  */
1000
1001         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1002                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1003
1004         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1005                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1006
1007         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1008                 goto nla_put_failure;
1009
1010         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1011                 goto nla_put_failure;
1012
1013         /* We get the tx control (rate and retries) info*/
1014
1015         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1016                 tx_attempts[i].idx = info->status.rates[i].idx;
1017                 tx_attempts[i].count = info->status.rates[i].count;
1018         }
1019
1020         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1021                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1022                     tx_attempts))
1023                 goto nla_put_failure;
1024
1025         /* We create a cookie to identify this skb */
1026         data->pending_cookie++;
1027         cookie = data->pending_cookie;
1028         info->rate_driver_data[0] = (void *)cookie;
1029         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, cookie))
1030                 goto nla_put_failure;
1031
1032         genlmsg_end(skb, msg_head);
1033         if (genlmsg_unicast(&init_net, skb, dst_portid))
1034                 goto err_free_txskb;
1035
1036         /* Enqueue the packet */
1037         skb_queue_tail(&data->pending, my_skb);
1038         data->tx_pkts++;
1039         data->tx_bytes += my_skb->len;
1040         return;
1041
1042 nla_put_failure:
1043         nlmsg_free(skb);
1044 err_free_txskb:
1045         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1046         ieee80211_free_txskb(hw, my_skb);
1047         data->tx_failed++;
1048 }
1049
1050 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1051                                struct ieee80211_channel *c2)
1052 {
1053         if (!c1 || !c2)
1054                 return false;
1055
1056         return c1->center_freq == c2->center_freq;
1057 }
1058
1059 struct tx_iter_data {
1060         struct ieee80211_channel *channel;
1061         bool receive;
1062 };
1063
1064 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1065                                    struct ieee80211_vif *vif)
1066 {
1067         struct tx_iter_data *data = _data;
1068
1069         if (!vif->chanctx_conf)
1070                 return;
1071
1072         if (!hwsim_chans_compat(data->channel,
1073                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1074                 return;
1075
1076         data->receive = true;
1077 }
1078
1079 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1080 {
1081         /*
1082          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1083          * e.g. like this:
1084          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1085          * (but you should use a valid OUI, not that)
1086          *
1087          * If anyone wants to 'donate' a radiotap OUI/subns code
1088          * please send a patch removing this #ifdef and changing
1089          * the values accordingly.
1090          */
1091 #ifdef HWSIM_RADIOTAP_OUI
1092         struct ieee80211_vendor_radiotap *rtap;
1093
1094         /*
1095          * Note that this code requires the headroom in the SKB
1096          * that was allocated earlier.
1097          */
1098         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1099         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1100         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1101         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1102         rtap->subns = 127;
1103
1104         /*
1105          * Radiotap vendor namespaces can (and should) also be
1106          * split into fields by using the standard radiotap
1107          * presence bitmap mechanism. Use just BIT(0) here for
1108          * the presence bitmap.
1109          */
1110         rtap->present = BIT(0);
1111         /* We have 8 bytes of (dummy) data */
1112         rtap->len = 8;
1113         /* For testing, also require it to be aligned */
1114         rtap->align = 8;
1115         /* And also test that padding works, 4 bytes */
1116         rtap->pad = 4;
1117         /* push the data */
1118         memcpy(rtap->data, "ABCDEFGH", 8);
1119         /* make sure to clear padding, mac80211 doesn't */
1120         memset(rtap->data + 8, 0, 4);
1121
1122         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1123 #endif
1124 }
1125
1126 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1127                                           struct sk_buff *skb,
1128                                           struct ieee80211_channel *chan)
1129 {
1130         struct mac80211_hwsim_data *data = hw->priv, *data2;
1131         bool ack = false;
1132         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1133         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1134         struct ieee80211_rx_status rx_status;
1135         u64 now;
1136
1137         memset(&rx_status, 0, sizeof(rx_status));
1138         rx_status.flag |= RX_FLAG_MACTIME_START;
1139         rx_status.freq = chan->center_freq;
1140         rx_status.band = chan->band;
1141         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1142                 rx_status.rate_idx =
1143                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1144                 rx_status.vht_nss =
1145                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1146                 rx_status.flag |= RX_FLAG_VHT;
1147         } else {
1148                 rx_status.rate_idx = info->control.rates[0].idx;
1149                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1150                         rx_status.flag |= RX_FLAG_HT;
1151         }
1152         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1153                 rx_status.flag |= RX_FLAG_40MHZ;
1154         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1155                 rx_status.flag |= RX_FLAG_SHORT_GI;
1156         /* TODO: simulate real signal strength (and optional packet loss) */
1157         rx_status.signal = data->power_level - 50;
1158
1159         if (data->ps != PS_DISABLED)
1160                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1161
1162         /* release the skb's source info */
1163         skb_orphan(skb);
1164         skb_dst_drop(skb);
1165         skb->mark = 0;
1166         secpath_reset(skb);
1167         nf_reset(skb);
1168
1169         /*
1170          * Get absolute mactime here so all HWs RX at the "same time", and
1171          * absolute TX time for beacon mactime so the timestamp matches.
1172          * Giving beacons a different mactime than non-beacons looks messy, but
1173          * it helps the Toffset be exact and a ~10us mactime discrepancy
1174          * probably doesn't really matter.
1175          */
1176         if (ieee80211_is_beacon(hdr->frame_control) ||
1177             ieee80211_is_probe_resp(hdr->frame_control))
1178                 now = data->abs_bcn_ts;
1179         else
1180                 now = mac80211_hwsim_get_tsf_raw();
1181
1182         /* Copy skb to all enabled radios that are on the current frequency */
1183         spin_lock(&hwsim_radio_lock);
1184         list_for_each_entry(data2, &hwsim_radios, list) {
1185                 struct sk_buff *nskb;
1186                 struct tx_iter_data tx_iter_data = {
1187                         .receive = false,
1188                         .channel = chan,
1189                 };
1190
1191                 if (data == data2)
1192                         continue;
1193
1194                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1195                     !hwsim_ps_rx_ok(data2, skb))
1196                         continue;
1197
1198                 if (!(data->group & data2->group))
1199                         continue;
1200
1201                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1202                     !hwsim_chans_compat(chan, data2->channel)) {
1203                         ieee80211_iterate_active_interfaces_atomic(
1204                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1205                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1206                         if (!tx_iter_data.receive)
1207                                 continue;
1208                 }
1209
1210                 /*
1211                  * reserve some space for our vendor and the normal
1212                  * radiotap header, since we're copying anyway
1213                  */
1214                 if (skb->len < PAGE_SIZE && paged_rx) {
1215                         struct page *page = alloc_page(GFP_ATOMIC);
1216
1217                         if (!page)
1218                                 continue;
1219
1220                         nskb = dev_alloc_skb(128);
1221                         if (!nskb) {
1222                                 __free_page(page);
1223                                 continue;
1224                         }
1225
1226                         memcpy(page_address(page), skb->data, skb->len);
1227                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1228                 } else {
1229                         nskb = skb_copy(skb, GFP_ATOMIC);
1230                         if (!nskb)
1231                                 continue;
1232                 }
1233
1234                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1235                         ack = true;
1236
1237                 rx_status.mactime = now + data2->tsf_offset;
1238
1239                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1240
1241                 mac80211_hwsim_add_vendor_rtap(nskb);
1242
1243                 data2->rx_pkts++;
1244                 data2->rx_bytes += nskb->len;
1245                 ieee80211_rx_irqsafe(data2->hw, nskb);
1246         }
1247         spin_unlock(&hwsim_radio_lock);
1248
1249         return ack;
1250 }
1251
1252 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1253                               struct ieee80211_tx_control *control,
1254                               struct sk_buff *skb)
1255 {
1256         struct mac80211_hwsim_data *data = hw->priv;
1257         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1258         struct ieee80211_hdr *hdr = (void *)skb->data;
1259         struct ieee80211_chanctx_conf *chanctx_conf;
1260         struct ieee80211_channel *channel;
1261         bool ack;
1262         u32 _portid;
1263
1264         if (WARN_ON(skb->len < 10)) {
1265                 /* Should not happen; just a sanity check for addr1 use */
1266                 ieee80211_free_txskb(hw, skb);
1267                 return;
1268         }
1269
1270         if (!data->use_chanctx) {
1271                 channel = data->channel;
1272         } else if (txi->hw_queue == 4) {
1273                 channel = data->tmp_chan;
1274         } else {
1275                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1276                 if (chanctx_conf)
1277                         channel = chanctx_conf->def.chan;
1278                 else
1279                         channel = NULL;
1280         }
1281
1282         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1283                 ieee80211_free_txskb(hw, skb);
1284                 return;
1285         }
1286
1287         if (data->idle && !data->tmp_chan) {
1288                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1289                 ieee80211_free_txskb(hw, skb);
1290                 return;
1291         }
1292
1293         if (txi->control.vif)
1294                 hwsim_check_magic(txi->control.vif);
1295         if (control->sta)
1296                 hwsim_check_sta_magic(control->sta);
1297
1298         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1299                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1300                                        txi->control.rates,
1301                                        ARRAY_SIZE(txi->control.rates));
1302
1303         txi->rate_driver_data[0] = channel;
1304
1305         if (skb->len >= 24 + 8 &&
1306             ieee80211_is_probe_resp(hdr->frame_control)) {
1307                 /* fake header transmission time */
1308                 struct ieee80211_mgmt *mgmt;
1309                 struct ieee80211_rate *txrate;
1310                 u64 ts;
1311
1312                 mgmt = (struct ieee80211_mgmt *)skb->data;
1313                 txrate = ieee80211_get_tx_rate(hw, txi);
1314                 ts = mac80211_hwsim_get_tsf_raw();
1315                 mgmt->u.probe_resp.timestamp =
1316                         cpu_to_le64(ts + data->tsf_offset +
1317                                     24 * 8 * 10 / txrate->bitrate);
1318         }
1319
1320         mac80211_hwsim_monitor_rx(hw, skb, channel);
1321
1322         /* wmediumd mode check */
1323         _portid = ACCESS_ONCE(wmediumd_portid);
1324
1325         if (_portid)
1326                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1327
1328         /* NO wmediumd detected, perfect medium simulation */
1329         data->tx_pkts++;
1330         data->tx_bytes += skb->len;
1331         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1332
1333         if (ack && skb->len >= 16) {
1334                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1335                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1336         }
1337
1338         ieee80211_tx_info_clear_status(txi);
1339
1340         /* frame was transmitted at most favorable rate at first attempt */
1341         txi->control.rates[0].count = 1;
1342         txi->control.rates[1].idx = -1;
1343
1344         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1345                 txi->flags |= IEEE80211_TX_STAT_ACK;
1346         ieee80211_tx_status_irqsafe(hw, skb);
1347 }
1348
1349
1350 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1351 {
1352         struct mac80211_hwsim_data *data = hw->priv;
1353         wiphy_debug(hw->wiphy, "%s\n", __func__);
1354         data->started = true;
1355         return 0;
1356 }
1357
1358
1359 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1360 {
1361         struct mac80211_hwsim_data *data = hw->priv;
1362         data->started = false;
1363         tasklet_hrtimer_cancel(&data->beacon_timer);
1364         wiphy_debug(hw->wiphy, "%s\n", __func__);
1365 }
1366
1367
1368 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1369                                         struct ieee80211_vif *vif)
1370 {
1371         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1372                     __func__, ieee80211_vif_type_p2p(vif),
1373                     vif->addr);
1374         hwsim_set_magic(vif);
1375
1376         vif->cab_queue = 0;
1377         vif->hw_queue[IEEE80211_AC_VO] = 0;
1378         vif->hw_queue[IEEE80211_AC_VI] = 1;
1379         vif->hw_queue[IEEE80211_AC_BE] = 2;
1380         vif->hw_queue[IEEE80211_AC_BK] = 3;
1381
1382         return 0;
1383 }
1384
1385
1386 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1387                                            struct ieee80211_vif *vif,
1388                                            enum nl80211_iftype newtype,
1389                                            bool newp2p)
1390 {
1391         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1392         wiphy_debug(hw->wiphy,
1393                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1394                     __func__, ieee80211_vif_type_p2p(vif),
1395                     newtype, vif->addr);
1396         hwsim_check_magic(vif);
1397
1398         /*
1399          * interface may change from non-AP to AP in
1400          * which case this needs to be set up again
1401          */
1402         vif->cab_queue = 0;
1403
1404         return 0;
1405 }
1406
1407 static void mac80211_hwsim_remove_interface(
1408         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1409 {
1410         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1411                     __func__, ieee80211_vif_type_p2p(vif),
1412                     vif->addr);
1413         hwsim_check_magic(vif);
1414         hwsim_clear_magic(vif);
1415 }
1416
1417 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1418                                     struct sk_buff *skb,
1419                                     struct ieee80211_channel *chan)
1420 {
1421         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1422
1423         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1424                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1425                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1426                                        txi->control.rates,
1427                                        ARRAY_SIZE(txi->control.rates));
1428         }
1429
1430         mac80211_hwsim_monitor_rx(hw, skb, chan);
1431
1432         if (_pid)
1433                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1434
1435         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1436         dev_kfree_skb(skb);
1437 }
1438
1439 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1440                                      struct ieee80211_vif *vif)
1441 {
1442         struct mac80211_hwsim_data *data = arg;
1443         struct ieee80211_hw *hw = data->hw;
1444         struct ieee80211_tx_info *info;
1445         struct ieee80211_rate *txrate;
1446         struct ieee80211_mgmt *mgmt;
1447         struct sk_buff *skb;
1448
1449         hwsim_check_magic(vif);
1450
1451         if (vif->type != NL80211_IFTYPE_AP &&
1452             vif->type != NL80211_IFTYPE_MESH_POINT &&
1453             vif->type != NL80211_IFTYPE_ADHOC)
1454                 return;
1455
1456         skb = ieee80211_beacon_get(hw, vif);
1457         if (skb == NULL)
1458                 return;
1459         info = IEEE80211_SKB_CB(skb);
1460         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1461                 ieee80211_get_tx_rates(vif, NULL, skb,
1462                                        info->control.rates,
1463                                        ARRAY_SIZE(info->control.rates));
1464
1465         txrate = ieee80211_get_tx_rate(hw, info);
1466
1467         mgmt = (struct ieee80211_mgmt *) skb->data;
1468         /* fake header transmission time */
1469         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1470         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1471                                                data->tsf_offset +
1472                                                24 * 8 * 10 / txrate->bitrate);
1473
1474         mac80211_hwsim_tx_frame(hw, skb,
1475                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1476
1477         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1478                 ieee80211_csa_finish(vif);
1479 }
1480
1481 static enum hrtimer_restart
1482 mac80211_hwsim_beacon(struct hrtimer *timer)
1483 {
1484         struct mac80211_hwsim_data *data =
1485                 container_of(timer, struct mac80211_hwsim_data,
1486                              beacon_timer.timer);
1487         struct ieee80211_hw *hw = data->hw;
1488         u64 bcn_int = data->beacon_int;
1489         ktime_t next_bcn;
1490
1491         if (!data->started)
1492                 goto out;
1493
1494         ieee80211_iterate_active_interfaces_atomic(
1495                 hw, IEEE80211_IFACE_ITER_NORMAL,
1496                 mac80211_hwsim_beacon_tx, data);
1497
1498         /* beacon at new TBTT + beacon interval */
1499         if (data->bcn_delta) {
1500                 bcn_int -= data->bcn_delta;
1501                 data->bcn_delta = 0;
1502         }
1503
1504         next_bcn = ktime_add(hrtimer_get_expires(timer),
1505                              ns_to_ktime(bcn_int * 1000));
1506         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1507 out:
1508         return HRTIMER_NORESTART;
1509 }
1510
1511 static const char * const hwsim_chanwidths[] = {
1512         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1513         [NL80211_CHAN_WIDTH_20] = "ht20",
1514         [NL80211_CHAN_WIDTH_40] = "ht40",
1515         [NL80211_CHAN_WIDTH_80] = "vht80",
1516         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1517         [NL80211_CHAN_WIDTH_160] = "vht160",
1518 };
1519
1520 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1521 {
1522         struct mac80211_hwsim_data *data = hw->priv;
1523         struct ieee80211_conf *conf = &hw->conf;
1524         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1525                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1526                 [IEEE80211_SMPS_OFF] = "off",
1527                 [IEEE80211_SMPS_STATIC] = "static",
1528                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1529         };
1530
1531         if (conf->chandef.chan)
1532                 wiphy_debug(hw->wiphy,
1533                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1534                             __func__,
1535                             conf->chandef.chan->center_freq,
1536                             conf->chandef.center_freq1,
1537                             conf->chandef.center_freq2,
1538                             hwsim_chanwidths[conf->chandef.width],
1539                             !!(conf->flags & IEEE80211_CONF_IDLE),
1540                             !!(conf->flags & IEEE80211_CONF_PS),
1541                             smps_modes[conf->smps_mode]);
1542         else
1543                 wiphy_debug(hw->wiphy,
1544                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1545                             __func__,
1546                             !!(conf->flags & IEEE80211_CONF_IDLE),
1547                             !!(conf->flags & IEEE80211_CONF_PS),
1548                             smps_modes[conf->smps_mode]);
1549
1550         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1551
1552         data->channel = conf->chandef.chan;
1553
1554         WARN_ON(data->channel && data->use_chanctx);
1555
1556         data->power_level = conf->power_level;
1557         if (!data->started || !data->beacon_int)
1558                 tasklet_hrtimer_cancel(&data->beacon_timer);
1559         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1560                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1561                 u32 bcn_int = data->beacon_int;
1562                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1563
1564                 tasklet_hrtimer_start(&data->beacon_timer,
1565                                       ns_to_ktime(until_tbtt * 1000),
1566                                       HRTIMER_MODE_REL);
1567         }
1568
1569         return 0;
1570 }
1571
1572
1573 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1574                                             unsigned int changed_flags,
1575                                             unsigned int *total_flags,u64 multicast)
1576 {
1577         struct mac80211_hwsim_data *data = hw->priv;
1578
1579         wiphy_debug(hw->wiphy, "%s\n", __func__);
1580
1581         data->rx_filter = 0;
1582         if (*total_flags & FIF_ALLMULTI)
1583                 data->rx_filter |= FIF_ALLMULTI;
1584
1585         *total_flags = data->rx_filter;
1586 }
1587
1588 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1589                                        struct ieee80211_vif *vif)
1590 {
1591         unsigned int *count = data;
1592         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1593
1594         if (vp->bcn_en)
1595                 (*count)++;
1596 }
1597
1598 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1599                                             struct ieee80211_vif *vif,
1600                                             struct ieee80211_bss_conf *info,
1601                                             u32 changed)
1602 {
1603         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1604         struct mac80211_hwsim_data *data = hw->priv;
1605
1606         hwsim_check_magic(vif);
1607
1608         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1609                     __func__, changed, vif->addr);
1610
1611         if (changed & BSS_CHANGED_BSSID) {
1612                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1613                             __func__, info->bssid);
1614                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1615         }
1616
1617         if (changed & BSS_CHANGED_ASSOC) {
1618                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1619                             info->assoc, info->aid);
1620                 vp->assoc = info->assoc;
1621                 vp->aid = info->aid;
1622         }
1623
1624         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1625                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1626                             info->enable_beacon, info->beacon_int);
1627                 vp->bcn_en = info->enable_beacon;
1628                 if (data->started &&
1629                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1630                     info->enable_beacon) {
1631                         u64 tsf, until_tbtt;
1632                         u32 bcn_int;
1633                         data->beacon_int = info->beacon_int * 1024;
1634                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1635                         bcn_int = data->beacon_int;
1636                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1637                         tasklet_hrtimer_start(&data->beacon_timer,
1638                                               ns_to_ktime(until_tbtt * 1000),
1639                                               HRTIMER_MODE_REL);
1640                 } else if (!info->enable_beacon) {
1641                         unsigned int count = 0;
1642                         ieee80211_iterate_active_interfaces_atomic(
1643                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1644                                 mac80211_hwsim_bcn_en_iter, &count);
1645                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1646                                     count);
1647                         if (count == 0) {
1648                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1649                                 data->beacon_int = 0;
1650                         }
1651                 }
1652         }
1653
1654         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1655                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1656                             info->use_cts_prot);
1657         }
1658
1659         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1660                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1661                             info->use_short_preamble);
1662         }
1663
1664         if (changed & BSS_CHANGED_ERP_SLOT) {
1665                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1666         }
1667
1668         if (changed & BSS_CHANGED_HT) {
1669                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1670                             info->ht_operation_mode);
1671         }
1672
1673         if (changed & BSS_CHANGED_BASIC_RATES) {
1674                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1675                             (unsigned long long) info->basic_rates);
1676         }
1677
1678         if (changed & BSS_CHANGED_TXPOWER)
1679                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1680 }
1681
1682 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1683                                   struct ieee80211_vif *vif,
1684                                   struct ieee80211_sta *sta)
1685 {
1686         hwsim_check_magic(vif);
1687         hwsim_set_sta_magic(sta);
1688
1689         return 0;
1690 }
1691
1692 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1693                                      struct ieee80211_vif *vif,
1694                                      struct ieee80211_sta *sta)
1695 {
1696         hwsim_check_magic(vif);
1697         hwsim_clear_sta_magic(sta);
1698
1699         return 0;
1700 }
1701
1702 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1703                                       struct ieee80211_vif *vif,
1704                                       enum sta_notify_cmd cmd,
1705                                       struct ieee80211_sta *sta)
1706 {
1707         hwsim_check_magic(vif);
1708
1709         switch (cmd) {
1710         case STA_NOTIFY_SLEEP:
1711         case STA_NOTIFY_AWAKE:
1712                 /* TODO: make good use of these flags */
1713                 break;
1714         default:
1715                 WARN(1, "Invalid sta notify: %d\n", cmd);
1716                 break;
1717         }
1718 }
1719
1720 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1721                                   struct ieee80211_sta *sta,
1722                                   bool set)
1723 {
1724         hwsim_check_sta_magic(sta);
1725         return 0;
1726 }
1727
1728 static int mac80211_hwsim_conf_tx(
1729         struct ieee80211_hw *hw,
1730         struct ieee80211_vif *vif, u16 queue,
1731         const struct ieee80211_tx_queue_params *params)
1732 {
1733         wiphy_debug(hw->wiphy,
1734                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1735                     __func__, queue,
1736                     params->txop, params->cw_min,
1737                     params->cw_max, params->aifs);
1738         return 0;
1739 }
1740
1741 static int mac80211_hwsim_get_survey(
1742         struct ieee80211_hw *hw, int idx,
1743         struct survey_info *survey)
1744 {
1745         struct ieee80211_conf *conf = &hw->conf;
1746
1747         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1748
1749         if (idx != 0)
1750                 return -ENOENT;
1751
1752         /* Current channel */
1753         survey->channel = conf->chandef.chan;
1754
1755         /*
1756          * Magically conjured noise level --- this is only ok for simulated hardware.
1757          *
1758          * A real driver which cannot determine the real channel noise MUST NOT
1759          * report any noise, especially not a magically conjured one :-)
1760          */
1761         survey->filled = SURVEY_INFO_NOISE_DBM;
1762         survey->noise = -92;
1763
1764         return 0;
1765 }
1766
1767 #ifdef CONFIG_NL80211_TESTMODE
1768 /*
1769  * This section contains example code for using netlink
1770  * attributes with the testmode command in nl80211.
1771  */
1772
1773 /* These enums need to be kept in sync with userspace */
1774 enum hwsim_testmode_attr {
1775         __HWSIM_TM_ATTR_INVALID = 0,
1776         HWSIM_TM_ATTR_CMD       = 1,
1777         HWSIM_TM_ATTR_PS        = 2,
1778
1779         /* keep last */
1780         __HWSIM_TM_ATTR_AFTER_LAST,
1781         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1782 };
1783
1784 enum hwsim_testmode_cmd {
1785         HWSIM_TM_CMD_SET_PS             = 0,
1786         HWSIM_TM_CMD_GET_PS             = 1,
1787         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1788         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1789 };
1790
1791 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1792         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1793         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1794 };
1795
1796 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1797                                        struct ieee80211_vif *vif,
1798                                        void *data, int len)
1799 {
1800         struct mac80211_hwsim_data *hwsim = hw->priv;
1801         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1802         struct sk_buff *skb;
1803         int err, ps;
1804
1805         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1806                         hwsim_testmode_policy);
1807         if (err)
1808                 return err;
1809
1810         if (!tb[HWSIM_TM_ATTR_CMD])
1811                 return -EINVAL;
1812
1813         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1814         case HWSIM_TM_CMD_SET_PS:
1815                 if (!tb[HWSIM_TM_ATTR_PS])
1816                         return -EINVAL;
1817                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1818                 return hwsim_fops_ps_write(hwsim, ps);
1819         case HWSIM_TM_CMD_GET_PS:
1820                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1821                                                 nla_total_size(sizeof(u32)));
1822                 if (!skb)
1823                         return -ENOMEM;
1824                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1825                         goto nla_put_failure;
1826                 return cfg80211_testmode_reply(skb);
1827         case HWSIM_TM_CMD_STOP_QUEUES:
1828                 ieee80211_stop_queues(hw);
1829                 return 0;
1830         case HWSIM_TM_CMD_WAKE_QUEUES:
1831                 ieee80211_wake_queues(hw);
1832                 return 0;
1833         default:
1834                 return -EOPNOTSUPP;
1835         }
1836
1837  nla_put_failure:
1838         kfree_skb(skb);
1839         return -ENOBUFS;
1840 }
1841 #endif
1842
1843 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1844                                        struct ieee80211_vif *vif,
1845                                        enum ieee80211_ampdu_mlme_action action,
1846                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1847                                        u8 buf_size, bool amsdu)
1848 {
1849         switch (action) {
1850         case IEEE80211_AMPDU_TX_START:
1851                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1852                 break;
1853         case IEEE80211_AMPDU_TX_STOP_CONT:
1854         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1855         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1856                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1857                 break;
1858         case IEEE80211_AMPDU_TX_OPERATIONAL:
1859                 break;
1860         case IEEE80211_AMPDU_RX_START:
1861         case IEEE80211_AMPDU_RX_STOP:
1862                 break;
1863         default:
1864                 return -EOPNOTSUPP;
1865         }
1866
1867         return 0;
1868 }
1869
1870 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1871                                  struct ieee80211_vif *vif,
1872                                  u32 queues, bool drop)
1873 {
1874         /* Not implemented, queues only on kernel side */
1875 }
1876
1877 static void hw_scan_work(struct work_struct *work)
1878 {
1879         struct mac80211_hwsim_data *hwsim =
1880                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1881         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1882         int dwell, i;
1883
1884         mutex_lock(&hwsim->mutex);
1885         if (hwsim->scan_chan_idx >= req->n_channels) {
1886                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1887                 ieee80211_scan_completed(hwsim->hw, false);
1888                 hwsim->hw_scan_request = NULL;
1889                 hwsim->hw_scan_vif = NULL;
1890                 hwsim->tmp_chan = NULL;
1891                 mutex_unlock(&hwsim->mutex);
1892                 return;
1893         }
1894
1895         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1896                     req->channels[hwsim->scan_chan_idx]->center_freq);
1897
1898         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1899         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1900                                       IEEE80211_CHAN_RADAR) ||
1901             !req->n_ssids) {
1902                 dwell = 120;
1903         } else {
1904                 dwell = 30;
1905                 /* send probes */
1906                 for (i = 0; i < req->n_ssids; i++) {
1907                         struct sk_buff *probe;
1908
1909                         probe = ieee80211_probereq_get(hwsim->hw,
1910                                                        hwsim->scan_addr,
1911                                                        req->ssids[i].ssid,
1912                                                        req->ssids[i].ssid_len,
1913                                                        req->ie_len);
1914                         if (!probe)
1915                                 continue;
1916
1917                         if (req->ie_len)
1918                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1919                                        req->ie_len);
1920
1921                         local_bh_disable();
1922                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1923                                                 hwsim->tmp_chan);
1924                         local_bh_enable();
1925                 }
1926         }
1927         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1928                                      msecs_to_jiffies(dwell));
1929         hwsim->scan_chan_idx++;
1930         mutex_unlock(&hwsim->mutex);
1931 }
1932
1933 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1934                                   struct ieee80211_vif *vif,
1935                                   struct ieee80211_scan_request *hw_req)
1936 {
1937         struct mac80211_hwsim_data *hwsim = hw->priv;
1938         struct cfg80211_scan_request *req = &hw_req->req;
1939
1940         mutex_lock(&hwsim->mutex);
1941         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1942                 mutex_unlock(&hwsim->mutex);
1943                 return -EBUSY;
1944         }
1945         hwsim->hw_scan_request = req;
1946         hwsim->hw_scan_vif = vif;
1947         hwsim->scan_chan_idx = 0;
1948         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1949                 get_random_mask_addr(hwsim->scan_addr,
1950                                      hw_req->req.mac_addr,
1951                                      hw_req->req.mac_addr_mask);
1952         else
1953                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1954         mutex_unlock(&hwsim->mutex);
1955
1956         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1957
1958         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1959
1960         return 0;
1961 }
1962
1963 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1964                                           struct ieee80211_vif *vif)
1965 {
1966         struct mac80211_hwsim_data *hwsim = hw->priv;
1967
1968         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1969
1970         cancel_delayed_work_sync(&hwsim->hw_scan);
1971
1972         mutex_lock(&hwsim->mutex);
1973         ieee80211_scan_completed(hwsim->hw, true);
1974         hwsim->tmp_chan = NULL;
1975         hwsim->hw_scan_request = NULL;
1976         hwsim->hw_scan_vif = NULL;
1977         mutex_unlock(&hwsim->mutex);
1978 }
1979
1980 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1981                                    struct ieee80211_vif *vif,
1982                                    const u8 *mac_addr)
1983 {
1984         struct mac80211_hwsim_data *hwsim = hw->priv;
1985
1986         mutex_lock(&hwsim->mutex);
1987
1988         if (hwsim->scanning) {
1989                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1990                 goto out;
1991         }
1992
1993         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1994
1995         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1996         hwsim->scanning = true;
1997
1998 out:
1999         mutex_unlock(&hwsim->mutex);
2000 }
2001
2002 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2003                                             struct ieee80211_vif *vif)
2004 {
2005         struct mac80211_hwsim_data *hwsim = hw->priv;
2006
2007         mutex_lock(&hwsim->mutex);
2008
2009         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2010         hwsim->scanning = false;
2011         eth_zero_addr(hwsim->scan_addr);
2012
2013         mutex_unlock(&hwsim->mutex);
2014 }
2015
2016 static void hw_roc_start(struct work_struct *work)
2017 {
2018         struct mac80211_hwsim_data *hwsim =
2019                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2020
2021         mutex_lock(&hwsim->mutex);
2022
2023         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2024         hwsim->tmp_chan = hwsim->roc_chan;
2025         ieee80211_ready_on_channel(hwsim->hw);
2026
2027         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2028                                      msecs_to_jiffies(hwsim->roc_duration));
2029
2030         mutex_unlock(&hwsim->mutex);
2031 }
2032
2033 static void hw_roc_done(struct work_struct *work)
2034 {
2035         struct mac80211_hwsim_data *hwsim =
2036                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2037
2038         mutex_lock(&hwsim->mutex);
2039         ieee80211_remain_on_channel_expired(hwsim->hw);
2040         hwsim->tmp_chan = NULL;
2041         mutex_unlock(&hwsim->mutex);
2042
2043         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2044 }
2045
2046 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2047                               struct ieee80211_vif *vif,
2048                               struct ieee80211_channel *chan,
2049                               int duration,
2050                               enum ieee80211_roc_type type)
2051 {
2052         struct mac80211_hwsim_data *hwsim = hw->priv;
2053
2054         mutex_lock(&hwsim->mutex);
2055         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2056                 mutex_unlock(&hwsim->mutex);
2057                 return -EBUSY;
2058         }
2059
2060         hwsim->roc_chan = chan;
2061         hwsim->roc_duration = duration;
2062         mutex_unlock(&hwsim->mutex);
2063
2064         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2065                     chan->center_freq, duration);
2066         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2067
2068         return 0;
2069 }
2070
2071 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2072 {
2073         struct mac80211_hwsim_data *hwsim = hw->priv;
2074
2075         cancel_delayed_work_sync(&hwsim->roc_start);
2076         cancel_delayed_work_sync(&hwsim->roc_done);
2077
2078         mutex_lock(&hwsim->mutex);
2079         hwsim->tmp_chan = NULL;
2080         mutex_unlock(&hwsim->mutex);
2081
2082         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2083
2084         return 0;
2085 }
2086
2087 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2088                                       struct ieee80211_chanctx_conf *ctx)
2089 {
2090         hwsim_set_chanctx_magic(ctx);
2091         wiphy_debug(hw->wiphy,
2092                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2093                     ctx->def.chan->center_freq, ctx->def.width,
2094                     ctx->def.center_freq1, ctx->def.center_freq2);
2095         return 0;
2096 }
2097
2098 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2099                                           struct ieee80211_chanctx_conf *ctx)
2100 {
2101         wiphy_debug(hw->wiphy,
2102                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2103                     ctx->def.chan->center_freq, ctx->def.width,
2104                     ctx->def.center_freq1, ctx->def.center_freq2);
2105         hwsim_check_chanctx_magic(ctx);
2106         hwsim_clear_chanctx_magic(ctx);
2107 }
2108
2109 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2110                                           struct ieee80211_chanctx_conf *ctx,
2111                                           u32 changed)
2112 {
2113         hwsim_check_chanctx_magic(ctx);
2114         wiphy_debug(hw->wiphy,
2115                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2116                     ctx->def.chan->center_freq, ctx->def.width,
2117                     ctx->def.center_freq1, ctx->def.center_freq2);
2118 }
2119
2120 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2121                                              struct ieee80211_vif *vif,
2122                                              struct ieee80211_chanctx_conf *ctx)
2123 {
2124         hwsim_check_magic(vif);
2125         hwsim_check_chanctx_magic(ctx);
2126
2127         return 0;
2128 }
2129
2130 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2131                                                 struct ieee80211_vif *vif,
2132                                                 struct ieee80211_chanctx_conf *ctx)
2133 {
2134         hwsim_check_magic(vif);
2135         hwsim_check_chanctx_magic(ctx);
2136 }
2137
2138 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2139         "tx_pkts_nic",
2140         "tx_bytes_nic",
2141         "rx_pkts_nic",
2142         "rx_bytes_nic",
2143         "d_tx_dropped",
2144         "d_tx_failed",
2145         "d_ps_mode",
2146         "d_group",
2147         "d_tx_power",
2148 };
2149
2150 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2151
2152 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2153                                           struct ieee80211_vif *vif,
2154                                           u32 sset, u8 *data)
2155 {
2156         if (sset == ETH_SS_STATS)
2157                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2158                        sizeof(mac80211_hwsim_gstrings_stats));
2159 }
2160
2161 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2162                                             struct ieee80211_vif *vif, int sset)
2163 {
2164         if (sset == ETH_SS_STATS)
2165                 return MAC80211_HWSIM_SSTATS_LEN;
2166         return 0;
2167 }
2168
2169 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2170                                         struct ieee80211_vif *vif,
2171                                         struct ethtool_stats *stats, u64 *data)
2172 {
2173         struct mac80211_hwsim_data *ar = hw->priv;
2174         int i = 0;
2175
2176         data[i++] = ar->tx_pkts;
2177         data[i++] = ar->tx_bytes;
2178         data[i++] = ar->rx_pkts;
2179         data[i++] = ar->rx_bytes;
2180         data[i++] = ar->tx_dropped;
2181         data[i++] = ar->tx_failed;
2182         data[i++] = ar->ps;
2183         data[i++] = ar->group;
2184         data[i++] = ar->power_level;
2185
2186         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2187 }
2188
2189 static const struct ieee80211_ops mac80211_hwsim_ops = {
2190         .tx = mac80211_hwsim_tx,
2191         .start = mac80211_hwsim_start,
2192         .stop = mac80211_hwsim_stop,
2193         .add_interface = mac80211_hwsim_add_interface,
2194         .change_interface = mac80211_hwsim_change_interface,
2195         .remove_interface = mac80211_hwsim_remove_interface,
2196         .config = mac80211_hwsim_config,
2197         .configure_filter = mac80211_hwsim_configure_filter,
2198         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2199         .sta_add = mac80211_hwsim_sta_add,
2200         .sta_remove = mac80211_hwsim_sta_remove,
2201         .sta_notify = mac80211_hwsim_sta_notify,
2202         .set_tim = mac80211_hwsim_set_tim,
2203         .conf_tx = mac80211_hwsim_conf_tx,
2204         .get_survey = mac80211_hwsim_get_survey,
2205         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2206         .ampdu_action = mac80211_hwsim_ampdu_action,
2207         .sw_scan_start = mac80211_hwsim_sw_scan,
2208         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2209         .flush = mac80211_hwsim_flush,
2210         .get_tsf = mac80211_hwsim_get_tsf,
2211         .set_tsf = mac80211_hwsim_set_tsf,
2212         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2213         .get_et_stats = mac80211_hwsim_get_et_stats,
2214         .get_et_strings = mac80211_hwsim_get_et_strings,
2215 };
2216
2217 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2218
2219 struct hwsim_new_radio_params {
2220         unsigned int channels;
2221         const char *reg_alpha2;
2222         const struct ieee80211_regdomain *regd;
2223         bool reg_strict;
2224         bool p2p_device;
2225         bool use_chanctx;
2226         bool destroy_on_close;
2227         const char *hwname;
2228         bool no_vif;
2229 };
2230
2231 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2232                                    struct genl_info *info)
2233 {
2234         if (info)
2235                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2236                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2237         else
2238                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2239                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2240 }
2241
2242 static int append_radio_msg(struct sk_buff *skb, int id,
2243                             struct hwsim_new_radio_params *param)
2244 {
2245         int ret;
2246
2247         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2248         if (ret < 0)
2249                 return ret;
2250
2251         if (param->channels) {
2252                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2253                 if (ret < 0)
2254                         return ret;
2255         }
2256
2257         if (param->reg_alpha2) {
2258                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2259                               param->reg_alpha2);
2260                 if (ret < 0)
2261                         return ret;
2262         }
2263
2264         if (param->regd) {
2265                 int i;
2266
2267                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2268                         if (hwsim_world_regdom_custom[i] != param->regd)
2269                                 continue;
2270
2271                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2272                         if (ret < 0)
2273                                 return ret;
2274                         break;
2275                 }
2276         }
2277
2278         if (param->reg_strict) {
2279                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2280                 if (ret < 0)
2281                         return ret;
2282         }
2283
2284         if (param->p2p_device) {
2285                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2286                 if (ret < 0)
2287                         return ret;
2288         }
2289
2290         if (param->use_chanctx) {
2291                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2292                 if (ret < 0)
2293                         return ret;
2294         }
2295
2296         if (param->hwname) {
2297                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2298                               strlen(param->hwname), param->hwname);
2299                 if (ret < 0)
2300                         return ret;
2301         }
2302
2303         return 0;
2304 }
2305
2306 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2307                                   struct hwsim_new_radio_params *param)
2308 {
2309         struct sk_buff *mcast_skb;
2310         void *data;
2311
2312         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2313         if (!mcast_skb)
2314                 return;
2315
2316         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2317                            HWSIM_CMD_NEW_RADIO);
2318         if (!data)
2319                 goto out_err;
2320
2321         if (append_radio_msg(mcast_skb, id, param) < 0)
2322                 goto out_err;
2323
2324         genlmsg_end(mcast_skb, data);
2325
2326         hwsim_mcast_config_msg(mcast_skb, info);
2327         return;
2328
2329 out_err:
2330         genlmsg_cancel(mcast_skb, data);
2331         nlmsg_free(mcast_skb);
2332 }
2333
2334 static int mac80211_hwsim_new_radio(struct genl_info *info,
2335                                     struct hwsim_new_radio_params *param)
2336 {
2337         int err;
2338         u8 addr[ETH_ALEN];
2339         struct mac80211_hwsim_data *data;
2340         struct ieee80211_hw *hw;
2341         enum ieee80211_band band;
2342         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2343         int idx;
2344
2345         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2346                 return -EINVAL;
2347
2348         spin_lock_bh(&hwsim_radio_lock);
2349         idx = hwsim_radio_idx++;
2350         spin_unlock_bh(&hwsim_radio_lock);
2351
2352         if (param->use_chanctx)
2353                 ops = &mac80211_hwsim_mchan_ops;
2354         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2355         if (!hw) {
2356                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2357                 err = -ENOMEM;
2358                 goto failed;
2359         }
2360         data = hw->priv;
2361         data->hw = hw;
2362
2363         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2364         if (IS_ERR(data->dev)) {
2365                 printk(KERN_DEBUG
2366                        "mac80211_hwsim: device_create failed (%ld)\n",
2367                        PTR_ERR(data->dev));
2368                 err = -ENOMEM;
2369                 goto failed_drvdata;
2370         }
2371         data->dev->driver = &mac80211_hwsim_driver.driver;
2372         err = device_bind_driver(data->dev);
2373         if (err != 0) {
2374                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2375                        err);
2376                 goto failed_bind;
2377         }
2378
2379         skb_queue_head_init(&data->pending);
2380
2381         SET_IEEE80211_DEV(hw, data->dev);
2382         eth_zero_addr(addr);
2383         addr[0] = 0x02;
2384         addr[3] = idx >> 8;
2385         addr[4] = idx;
2386         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2387         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2388         data->addresses[1].addr[0] |= 0x40;
2389         hw->wiphy->n_addresses = 2;
2390         hw->wiphy->addresses = data->addresses;
2391
2392         data->channels = param->channels;
2393         data->use_chanctx = param->use_chanctx;
2394         data->idx = idx;
2395         data->destroy_on_close = param->destroy_on_close;
2396         if (info)
2397                 data->portid = info->snd_portid;
2398
2399         if (data->use_chanctx) {
2400                 hw->wiphy->max_scan_ssids = 255;
2401                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2402                 hw->wiphy->max_remain_on_channel_duration = 1000;
2403                 /* For channels > 1 DFS is not allowed */
2404                 hw->wiphy->n_iface_combinations = 1;
2405                 hw->wiphy->iface_combinations = &data->if_combination;
2406                 if (param->p2p_device)
2407                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2408                 else
2409                         data->if_combination = hwsim_if_comb[0];
2410                 data->if_combination.num_different_channels = data->channels;
2411         } else if (param->p2p_device) {
2412                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2413                 hw->wiphy->n_iface_combinations =
2414                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2415         } else {
2416                 hw->wiphy->iface_combinations = hwsim_if_comb;
2417                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2418         }
2419
2420         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2421         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2422         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2423
2424         hw->queues = 5;
2425         hw->offchannel_tx_hw_queue = 4;
2426         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2427                                      BIT(NL80211_IFTYPE_AP) |
2428                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2429                                      BIT(NL80211_IFTYPE_P2P_GO) |
2430                                      BIT(NL80211_IFTYPE_ADHOC) |
2431                                      BIT(NL80211_IFTYPE_MESH_POINT);
2432
2433         if (param->p2p_device)
2434                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2435
2436         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2437         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2438         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2439         ieee80211_hw_set(hw, QUEUE_CONTROL);
2440         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2441         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2442         ieee80211_hw_set(hw, MFP_CAPABLE);
2443         ieee80211_hw_set(hw, SIGNAL_DBM);
2444         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2445         if (rctbl)
2446                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2447
2448         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2449                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2450                             WIPHY_FLAG_AP_UAPSD |
2451                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2452         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2453                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2454                                NL80211_FEATURE_STATIC_SMPS |
2455                                NL80211_FEATURE_DYNAMIC_SMPS |
2456                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2457         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2458
2459         /* ask mac80211 to reserve space for magic */
2460         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2461         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2462         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2463
2464         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2465                 sizeof(hwsim_channels_2ghz));
2466         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2467                 sizeof(hwsim_channels_5ghz));
2468         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2469
2470         for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2471                 struct ieee80211_supported_band *sband = &data->bands[band];
2472                 switch (band) {
2473                 case IEEE80211_BAND_2GHZ:
2474                         sband->channels = data->channels_2ghz;
2475                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2476                         sband->bitrates = data->rates;
2477                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2478                         break;
2479                 case IEEE80211_BAND_5GHZ:
2480                         sband->channels = data->channels_5ghz;
2481                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2482                         sband->bitrates = data->rates + 4;
2483                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2484
2485                         sband->vht_cap.vht_supported = true;
2486                         sband->vht_cap.cap =
2487                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2488                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2489                                 IEEE80211_VHT_CAP_RXLDPC |
2490                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2491                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2492                                 IEEE80211_VHT_CAP_TXSTBC |
2493                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2494                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2495                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2496                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2497                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2498                         sband->vht_cap.vht_mcs.rx_mcs_map =
2499                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2500                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2501                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2502                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2503                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2504                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2505                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2506                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2507                         sband->vht_cap.vht_mcs.tx_mcs_map =
2508                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2509                         break;
2510                 default:
2511                         continue;
2512                 }
2513
2514                 sband->ht_cap.ht_supported = true;
2515                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2516                                     IEEE80211_HT_CAP_GRN_FLD |
2517                                     IEEE80211_HT_CAP_SGI_20 |
2518                                     IEEE80211_HT_CAP_SGI_40 |
2519                                     IEEE80211_HT_CAP_DSSSCCK40;
2520                 sband->ht_cap.ampdu_factor = 0x3;
2521                 sband->ht_cap.ampdu_density = 0x6;
2522                 memset(&sband->ht_cap.mcs, 0,
2523                        sizeof(sband->ht_cap.mcs));
2524                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2525                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2526                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2527
2528                 hw->wiphy->bands[band] = sband;
2529         }
2530
2531         /* By default all radios belong to the first group */
2532         data->group = 1;
2533         mutex_init(&data->mutex);
2534
2535         /* Enable frame retransmissions for lossy channels */
2536         hw->max_rates = 4;
2537         hw->max_rate_tries = 11;
2538
2539         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2540         hw->wiphy->n_vendor_commands =
2541                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2542         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2543         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2544
2545         if (param->reg_strict)
2546                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2547         if (param->regd) {
2548                 data->regd = param->regd;
2549                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2550                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2551                 /* give the regulatory workqueue a chance to run */
2552                 schedule_timeout_interruptible(1);
2553         }
2554
2555         if (param->no_vif)
2556                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2557
2558         err = ieee80211_register_hw(hw);
2559         if (err < 0) {
2560                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2561                        err);
2562                 goto failed_hw;
2563         }
2564
2565         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2566
2567         if (param->reg_alpha2) {
2568                 data->alpha2[0] = param->reg_alpha2[0];
2569                 data->alpha2[1] = param->reg_alpha2[1];
2570                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2571         }
2572
2573         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2574         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2575         debugfs_create_file("group", 0666, data->debugfs, data,
2576                             &hwsim_fops_group);
2577         if (!data->use_chanctx)
2578                 debugfs_create_file("dfs_simulate_radar", 0222,
2579                                     data->debugfs,
2580                                     data, &hwsim_simulate_radar);
2581
2582         tasklet_hrtimer_init(&data->beacon_timer,
2583                              mac80211_hwsim_beacon,
2584                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2585
2586         spin_lock_bh(&hwsim_radio_lock);
2587         list_add_tail(&data->list, &hwsim_radios);
2588         spin_unlock_bh(&hwsim_radio_lock);
2589
2590         if (idx > 0)
2591                 hwsim_mcast_new_radio(idx, info, param);
2592
2593         return idx;
2594
2595 failed_hw:
2596         device_release_driver(data->dev);
2597 failed_bind:
2598         device_unregister(data->dev);
2599 failed_drvdata:
2600         ieee80211_free_hw(hw);
2601 failed:
2602         return err;
2603 }
2604
2605 static void hwsim_mcast_del_radio(int id, const char *hwname,
2606                                   struct genl_info *info)
2607 {
2608         struct sk_buff *skb;
2609         void *data;
2610         int ret;
2611
2612         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2613         if (!skb)
2614                 return;
2615
2616         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2617                            HWSIM_CMD_DEL_RADIO);
2618         if (!data)
2619                 goto error;
2620
2621         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2622         if (ret < 0)
2623                 goto error;
2624
2625         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2626                       hwname);
2627         if (ret < 0)
2628                 goto error;
2629
2630         genlmsg_end(skb, data);
2631
2632         hwsim_mcast_config_msg(skb, info);
2633
2634         return;
2635
2636 error:
2637         nlmsg_free(skb);
2638 }
2639
2640 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2641                                      const char *hwname,
2642                                      struct genl_info *info)
2643 {
2644         hwsim_mcast_del_radio(data->idx, hwname, info);
2645         debugfs_remove_recursive(data->debugfs);
2646         ieee80211_unregister_hw(data->hw);
2647         device_release_driver(data->dev);
2648         device_unregister(data->dev);
2649         ieee80211_free_hw(data->hw);
2650 }
2651
2652 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2653                                     struct mac80211_hwsim_data *data,
2654                                     u32 portid, u32 seq,
2655                                     struct netlink_callback *cb, int flags)
2656 {
2657         void *hdr;
2658         struct hwsim_new_radio_params param = { };
2659         int res = -EMSGSIZE;
2660
2661         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2662                           HWSIM_CMD_GET_RADIO);
2663         if (!hdr)
2664                 return -EMSGSIZE;
2665
2666         if (cb)
2667                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2668
2669         if (data->alpha2[0] && data->alpha2[1])
2670                 param.reg_alpha2 = data->alpha2;
2671
2672         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2673                                         REGULATORY_STRICT_REG);
2674         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2675                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2676         param.use_chanctx = data->use_chanctx;
2677         param.regd = data->regd;
2678         param.channels = data->channels;
2679         param.hwname = wiphy_name(data->hw->wiphy);
2680
2681         res = append_radio_msg(skb, data->idx, &param);
2682         if (res < 0)
2683                 goto out_err;
2684
2685         genlmsg_end(skb, hdr);
2686         return 0;
2687
2688 out_err:
2689         genlmsg_cancel(skb, hdr);
2690         return res;
2691 }
2692
2693 static void mac80211_hwsim_free(void)
2694 {
2695         struct mac80211_hwsim_data *data;
2696
2697         spin_lock_bh(&hwsim_radio_lock);
2698         while ((data = list_first_entry_or_null(&hwsim_radios,
2699                                                 struct mac80211_hwsim_data,
2700                                                 list))) {
2701                 list_del(&data->list);
2702                 spin_unlock_bh(&hwsim_radio_lock);
2703                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2704                                          NULL);
2705                 spin_lock_bh(&hwsim_radio_lock);
2706         }
2707         spin_unlock_bh(&hwsim_radio_lock);
2708         class_destroy(hwsim_class);
2709 }
2710
2711 static const struct net_device_ops hwsim_netdev_ops = {
2712         .ndo_start_xmit         = hwsim_mon_xmit,
2713         .ndo_change_mtu         = eth_change_mtu,
2714         .ndo_set_mac_address    = eth_mac_addr,
2715         .ndo_validate_addr      = eth_validate_addr,
2716 };
2717
2718 static void hwsim_mon_setup(struct net_device *dev)
2719 {
2720         dev->netdev_ops = &hwsim_netdev_ops;
2721         dev->destructor = free_netdev;
2722         ether_setup(dev);
2723         dev->priv_flags |= IFF_NO_QUEUE;
2724         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2725         eth_zero_addr(dev->dev_addr);
2726         dev->dev_addr[0] = 0x12;
2727 }
2728
2729 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2730 {
2731         struct mac80211_hwsim_data *data;
2732         bool _found = false;
2733
2734         spin_lock_bh(&hwsim_radio_lock);
2735         list_for_each_entry(data, &hwsim_radios, list) {
2736                 if (mac80211_hwsim_addr_match(data, addr)) {
2737                         _found = true;
2738                         break;
2739                 }
2740         }
2741         spin_unlock_bh(&hwsim_radio_lock);
2742
2743         if (!_found)
2744                 return NULL;
2745
2746         return data;
2747 }
2748
2749 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2750                                            struct genl_info *info)
2751 {
2752
2753         struct ieee80211_hdr *hdr;
2754         struct mac80211_hwsim_data *data2;
2755         struct ieee80211_tx_info *txi;
2756         struct hwsim_tx_rate *tx_attempts;
2757         u64 ret_skb_cookie;
2758         struct sk_buff *skb, *tmp;
2759         const u8 *src;
2760         unsigned int hwsim_flags;
2761         int i;
2762         bool found = false;
2763
2764         if (info->snd_portid != wmediumd_portid)
2765                 return -EINVAL;
2766
2767         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2768             !info->attrs[HWSIM_ATTR_FLAGS] ||
2769             !info->attrs[HWSIM_ATTR_COOKIE] ||
2770             !info->attrs[HWSIM_ATTR_TX_INFO])
2771                 goto out;
2772
2773         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2774         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2775         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2776
2777         data2 = get_hwsim_data_ref_from_addr(src);
2778         if (!data2)
2779                 goto out;
2780
2781         /* look for the skb matching the cookie passed back from user */
2782         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2783                 u64 skb_cookie;
2784
2785                 txi = IEEE80211_SKB_CB(skb);
2786                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2787
2788                 if (skb_cookie == ret_skb_cookie) {
2789                         skb_unlink(skb, &data2->pending);
2790                         found = true;
2791                         break;
2792                 }
2793         }
2794
2795         /* not found */
2796         if (!found)
2797                 goto out;
2798
2799         /* Tx info received because the frame was broadcasted on user space,
2800          so we get all the necessary info: tx attempts and skb control buff */
2801
2802         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2803                        info->attrs[HWSIM_ATTR_TX_INFO]);
2804
2805         /* now send back TX status */
2806         txi = IEEE80211_SKB_CB(skb);
2807
2808         ieee80211_tx_info_clear_status(txi);
2809
2810         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2811                 txi->status.rates[i].idx = tx_attempts[i].idx;
2812                 txi->status.rates[i].count = tx_attempts[i].count;
2813                 /*txi->status.rates[i].flags = 0;*/
2814         }
2815
2816         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2817
2818         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2819            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2820                 if (skb->len >= 16) {
2821                         hdr = (struct ieee80211_hdr *) skb->data;
2822                         mac80211_hwsim_monitor_ack(data2->channel,
2823                                                    hdr->addr2);
2824                 }
2825                 txi->flags |= IEEE80211_TX_STAT_ACK;
2826         }
2827         ieee80211_tx_status_irqsafe(data2->hw, skb);
2828         return 0;
2829 out:
2830         return -EINVAL;
2831
2832 }
2833
2834 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2835                                           struct genl_info *info)
2836 {
2837         struct mac80211_hwsim_data *data2;
2838         struct ieee80211_rx_status rx_status;
2839         const u8 *dst;
2840         int frame_data_len;
2841         void *frame_data;
2842         struct sk_buff *skb = NULL;
2843
2844         if (info->snd_portid != wmediumd_portid)
2845                 return -EINVAL;
2846
2847         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2848             !info->attrs[HWSIM_ATTR_FRAME] ||
2849             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2850             !info->attrs[HWSIM_ATTR_SIGNAL])
2851                 goto out;
2852
2853         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2854         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2855         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2856
2857         /* Allocate new skb here */
2858         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2859         if (skb == NULL)
2860                 goto err;
2861
2862         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2863                 goto err;
2864
2865         /* Copy the data */
2866         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2867
2868         data2 = get_hwsim_data_ref_from_addr(dst);
2869         if (!data2)
2870                 goto out;
2871
2872         /* check if radio is configured properly */
2873
2874         if (data2->idle || !data2->started)
2875                 goto out;
2876
2877         /* A frame is received from user space */
2878         memset(&rx_status, 0, sizeof(rx_status));
2879         /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2880          * packets?
2881          */
2882         rx_status.freq = data2->channel->center_freq;
2883         rx_status.band = data2->channel->band;
2884         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2885         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2886
2887         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2888         data2->rx_pkts++;
2889         data2->rx_bytes += skb->len;
2890         ieee80211_rx_irqsafe(data2->hw, skb);
2891
2892         return 0;
2893 err:
2894         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2895 out:
2896         dev_kfree_skb(skb);
2897         return -EINVAL;
2898 }
2899
2900 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2901                                       struct genl_info *info)
2902 {
2903         struct mac80211_hwsim_data *data;
2904         int chans = 1;
2905
2906         spin_lock_bh(&hwsim_radio_lock);
2907         list_for_each_entry(data, &hwsim_radios, list)
2908                 chans = max(chans, data->channels);
2909         spin_unlock_bh(&hwsim_radio_lock);
2910
2911         /* In the future we should revise the userspace API and allow it
2912          * to set a flag that it does support multi-channel, then we can
2913          * let this pass conditionally on the flag.
2914          * For current userspace, prohibit it since it won't work right.
2915          */
2916         if (chans > 1)
2917                 return -EOPNOTSUPP;
2918
2919         if (wmediumd_portid)
2920                 return -EBUSY;
2921
2922         wmediumd_portid = info->snd_portid;
2923
2924         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2925                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2926
2927         return 0;
2928 }
2929
2930 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2931 {
2932         struct hwsim_new_radio_params param = { 0 };
2933
2934         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2935         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2936         param.channels = channels;
2937         param.destroy_on_close =
2938                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2939
2940         if (info->attrs[HWSIM_ATTR_CHANNELS])
2941                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2942
2943         if (info->attrs[HWSIM_ATTR_NO_VIF])
2944                 param.no_vif = true;
2945
2946         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2947                 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2948
2949         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2950                 param.use_chanctx = true;
2951         else
2952                 param.use_chanctx = (param.channels > 1);
2953
2954         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2955                 param.reg_alpha2 =
2956                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2957
2958         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2959                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2960
2961                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2962                         return -EINVAL;
2963                 param.regd = hwsim_world_regdom_custom[idx];
2964         }
2965
2966         return mac80211_hwsim_new_radio(info, &param);
2967 }
2968
2969 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2970 {
2971         struct mac80211_hwsim_data *data;
2972         s64 idx = -1;
2973         const char *hwname = NULL;
2974
2975         if (info->attrs[HWSIM_ATTR_RADIO_ID])
2976                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2977         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2978                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2979         else
2980                 return -EINVAL;
2981
2982         spin_lock_bh(&hwsim_radio_lock);
2983         list_for_each_entry(data, &hwsim_radios, list) {
2984                 if (idx >= 0) {
2985                         if (data->idx != idx)
2986                                 continue;
2987                 } else {
2988                         if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
2989                                 continue;
2990                 }
2991
2992                 list_del(&data->list);
2993                 spin_unlock_bh(&hwsim_radio_lock);
2994                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2995                                          info);
2996                 return 0;
2997         }
2998         spin_unlock_bh(&hwsim_radio_lock);
2999
3000         return -ENODEV;
3001 }
3002
3003 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3004 {
3005         struct mac80211_hwsim_data *data;
3006         struct sk_buff *skb;
3007         int idx, res = -ENODEV;
3008
3009         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3010                 return -EINVAL;
3011         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3012
3013         spin_lock_bh(&hwsim_radio_lock);
3014         list_for_each_entry(data, &hwsim_radios, list) {
3015                 if (data->idx != idx)
3016                         continue;
3017
3018                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3019                 if (!skb) {
3020                         res = -ENOMEM;
3021                         goto out_err;
3022                 }
3023
3024                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3025                                                info->snd_seq, NULL, 0);
3026                 if (res < 0) {
3027                         nlmsg_free(skb);
3028                         goto out_err;
3029                 }
3030
3031                 genlmsg_reply(skb, info);
3032                 break;
3033         }
3034
3035 out_err:
3036         spin_unlock_bh(&hwsim_radio_lock);
3037
3038         return res;
3039 }
3040
3041 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3042                                struct netlink_callback *cb)
3043 {
3044         int idx = cb->args[0];
3045         struct mac80211_hwsim_data *data = NULL;
3046         int res;
3047
3048         spin_lock_bh(&hwsim_radio_lock);
3049
3050         if (idx == hwsim_radio_idx)
3051                 goto done;
3052
3053         list_for_each_entry(data, &hwsim_radios, list) {
3054                 if (data->idx < idx)
3055                         continue;
3056
3057                 res = mac80211_hwsim_get_radio(skb, data,
3058                                                NETLINK_CB(cb->skb).portid,
3059                                                cb->nlh->nlmsg_seq, cb,
3060                                                NLM_F_MULTI);
3061                 if (res < 0)
3062                         break;
3063
3064                 idx = data->idx + 1;
3065         }
3066
3067         cb->args[0] = idx;
3068
3069 done:
3070         spin_unlock_bh(&hwsim_radio_lock);
3071         return skb->len;
3072 }
3073
3074 /* Generic Netlink operations array */
3075 static const struct genl_ops hwsim_ops[] = {
3076         {
3077                 .cmd = HWSIM_CMD_REGISTER,
3078                 .policy = hwsim_genl_policy,
3079                 .doit = hwsim_register_received_nl,
3080                 .flags = GENL_ADMIN_PERM,
3081         },
3082         {
3083                 .cmd = HWSIM_CMD_FRAME,
3084                 .policy = hwsim_genl_policy,
3085                 .doit = hwsim_cloned_frame_received_nl,
3086         },
3087         {
3088                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3089                 .policy = hwsim_genl_policy,
3090                 .doit = hwsim_tx_info_frame_received_nl,
3091         },
3092         {
3093                 .cmd = HWSIM_CMD_NEW_RADIO,
3094                 .policy = hwsim_genl_policy,
3095                 .doit = hwsim_new_radio_nl,
3096                 .flags = GENL_ADMIN_PERM,
3097         },
3098         {
3099                 .cmd = HWSIM_CMD_DEL_RADIO,
3100                 .policy = hwsim_genl_policy,
3101                 .doit = hwsim_del_radio_nl,
3102                 .flags = GENL_ADMIN_PERM,
3103         },
3104         {
3105                 .cmd = HWSIM_CMD_GET_RADIO,
3106                 .policy = hwsim_genl_policy,
3107                 .doit = hwsim_get_radio_nl,
3108                 .dumpit = hwsim_dump_radio_nl,
3109         },
3110 };
3111
3112 static void destroy_radio(struct work_struct *work)
3113 {
3114         struct mac80211_hwsim_data *data =
3115                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3116
3117         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3118 }
3119
3120 static void remove_user_radios(u32 portid)
3121 {
3122         struct mac80211_hwsim_data *entry, *tmp;
3123
3124         spin_lock_bh(&hwsim_radio_lock);
3125         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3126                 if (entry->destroy_on_close && entry->portid == portid) {
3127                         list_del(&entry->list);
3128                         INIT_WORK(&entry->destroy_work, destroy_radio);
3129                         schedule_work(&entry->destroy_work);
3130                 }
3131         }
3132         spin_unlock_bh(&hwsim_radio_lock);
3133 }
3134
3135 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3136                                          unsigned long state,
3137                                          void *_notify)
3138 {
3139         struct netlink_notify *notify = _notify;
3140
3141         if (state != NETLINK_URELEASE)
3142                 return NOTIFY_DONE;
3143
3144         remove_user_radios(notify->portid);
3145
3146         if (notify->portid == wmediumd_portid) {
3147                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3148                        " socket, switching to perfect channel medium\n");
3149                 wmediumd_portid = 0;
3150         }
3151         return NOTIFY_DONE;
3152
3153 }
3154
3155 static struct notifier_block hwsim_netlink_notifier = {
3156         .notifier_call = mac80211_hwsim_netlink_notify,
3157 };
3158
3159 static int hwsim_init_netlink(void)
3160 {
3161         int rc;
3162
3163         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3164
3165         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3166                                                   hwsim_ops,
3167                                                   hwsim_mcgrps);
3168         if (rc)
3169                 goto failure;
3170
3171         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3172         if (rc) {
3173                 genl_unregister_family(&hwsim_genl_family);
3174                 goto failure;
3175         }
3176
3177         return 0;
3178
3179 failure:
3180         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3181         return -EINVAL;
3182 }
3183
3184 static void hwsim_exit_netlink(void)
3185 {
3186         /* unregister the notifier */
3187         netlink_unregister_notifier(&hwsim_netlink_notifier);
3188         /* unregister the family */
3189         genl_unregister_family(&hwsim_genl_family);
3190 }
3191
3192 static int __init init_mac80211_hwsim(void)
3193 {
3194         int i, err;
3195
3196         if (radios < 0 || radios > 100)
3197                 return -EINVAL;
3198
3199         if (channels < 1)
3200                 return -EINVAL;
3201
3202         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3203         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3204         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3205         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3206         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3207         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3208         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3209         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3210         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3211         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3212         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3213                 mac80211_hwsim_assign_vif_chanctx;
3214         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3215                 mac80211_hwsim_unassign_vif_chanctx;
3216
3217         spin_lock_init(&hwsim_radio_lock);
3218         INIT_LIST_HEAD(&hwsim_radios);
3219
3220         err = platform_driver_register(&mac80211_hwsim_driver);
3221         if (err)
3222                 return err;
3223
3224         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3225         if (IS_ERR(hwsim_class)) {
3226                 err = PTR_ERR(hwsim_class);
3227                 goto out_unregister_driver;
3228         }
3229
3230         err = hwsim_init_netlink();
3231         if (err < 0)
3232                 goto out_unregister_driver;
3233
3234         for (i = 0; i < radios; i++) {
3235                 struct hwsim_new_radio_params param = { 0 };
3236
3237                 param.channels = channels;
3238
3239                 switch (regtest) {
3240                 case HWSIM_REGTEST_DIFF_COUNTRY:
3241                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3242                                 param.reg_alpha2 = hwsim_alpha2s[i];
3243                         break;
3244                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3245                         if (!i)
3246                                 param.reg_alpha2 = hwsim_alpha2s[0];
3247                         break;
3248                 case HWSIM_REGTEST_STRICT_ALL:
3249                         param.reg_strict = true;
3250                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3251                         param.reg_alpha2 = hwsim_alpha2s[0];
3252                         break;
3253                 case HWSIM_REGTEST_WORLD_ROAM:
3254                         if (i == 0)
3255                                 param.regd = &hwsim_world_regdom_custom_01;
3256                         break;
3257                 case HWSIM_REGTEST_CUSTOM_WORLD:
3258                         param.regd = &hwsim_world_regdom_custom_01;
3259                         break;
3260                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3261                         if (i == 0)
3262                                 param.regd = &hwsim_world_regdom_custom_01;
3263                         else if (i == 1)
3264                                 param.regd = &hwsim_world_regdom_custom_02;
3265                         break;
3266                 case HWSIM_REGTEST_STRICT_FOLLOW:
3267                         if (i == 0) {
3268                                 param.reg_strict = true;
3269                                 param.reg_alpha2 = hwsim_alpha2s[0];
3270                         }
3271                         break;
3272                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3273                         if (i == 0) {
3274                                 param.reg_strict = true;
3275                                 param.reg_alpha2 = hwsim_alpha2s[0];
3276                         } else if (i == 1) {
3277                                 param.reg_alpha2 = hwsim_alpha2s[1];
3278                         }
3279                         break;
3280                 case HWSIM_REGTEST_ALL:
3281                         switch (i) {
3282                         case 0:
3283                                 param.regd = &hwsim_world_regdom_custom_01;
3284                                 break;
3285                         case 1:
3286                                 param.regd = &hwsim_world_regdom_custom_02;
3287                                 break;
3288                         case 2:
3289                                 param.reg_alpha2 = hwsim_alpha2s[0];
3290                                 break;
3291                         case 3:
3292                                 param.reg_alpha2 = hwsim_alpha2s[1];
3293                                 break;
3294                         case 4:
3295                                 param.reg_strict = true;
3296                                 param.reg_alpha2 = hwsim_alpha2s[2];
3297                                 break;
3298                         }
3299                         break;
3300                 default:
3301                         break;
3302                 }
3303
3304                 param.p2p_device = support_p2p_device;
3305                 param.use_chanctx = channels > 1;
3306
3307                 err = mac80211_hwsim_new_radio(NULL, &param);
3308                 if (err < 0)
3309                         goto out_free_radios;
3310         }
3311
3312         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3313                                  hwsim_mon_setup);
3314         if (hwsim_mon == NULL) {
3315                 err = -ENOMEM;
3316                 goto out_free_radios;
3317         }
3318
3319         rtnl_lock();
3320         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3321         if (err < 0) {
3322                 rtnl_unlock();
3323                 goto out_free_radios;
3324         }
3325
3326         err = register_netdevice(hwsim_mon);
3327         if (err < 0) {
3328                 rtnl_unlock();
3329                 goto out_free_mon;
3330         }
3331         rtnl_unlock();
3332
3333         return 0;
3334
3335 out_free_mon:
3336         free_netdev(hwsim_mon);
3337 out_free_radios:
3338         mac80211_hwsim_free();
3339 out_unregister_driver:
3340         platform_driver_unregister(&mac80211_hwsim_driver);
3341         return err;
3342 }
3343 module_init(init_mac80211_hwsim);
3344
3345 static void __exit exit_mac80211_hwsim(void)
3346 {
3347         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3348
3349         hwsim_exit_netlink();
3350
3351         mac80211_hwsim_free();
3352         unregister_netdev(hwsim_mon);
3353         platform_driver_unregister(&mac80211_hwsim_driver);
3354 }
3355 module_exit(exit_mac80211_hwsim);