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 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 334         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 335         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 336                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 337 #ifdef CONFIG_MAC80211_MESH
 338                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 339 #endif
 340                                  BIT(NL80211_IFTYPE_AP) |
 341                                  BIT(NL80211_IFTYPE_P2P_GO) },
 342         /* must be last, see hwsim_if_comb */
 343         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 344 };
 345
 346 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
 347         { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
 348 };
 349
 350 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 351         {
 352                 .limits = hwsim_if_limits,
 353                 /* remove the last entry which is P2P_DEVICE */
 354                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 355                 .max_interfaces = 2048,
 356                 .num_different_channels = 1,
 357         },
 358         {
 359                 .limits = hwsim_if_dfs_limits,
 360                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
 361                 .max_interfaces = 8,
 362                 .num_different_channels = 1,
 363                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 364                                        BIT(NL80211_CHAN_WIDTH_20) |
 365                                        BIT(NL80211_CHAN_WIDTH_40) |
 366                                        BIT(NL80211_CHAN_WIDTH_80) |
 367                                        BIT(NL80211_CHAN_WIDTH_160),
 368         }
 369 };
 370
 371 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 372         {
 373                 .limits = hwsim_if_limits,
 374                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 375                 .max_interfaces = 2048,
 376                 .num_different_channels = 1,
 377         },
 378         {
 379                 .limits = hwsim_if_dfs_limits,
 380                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
 381                 .max_interfaces = 8,
 382                 .num_different_channels = 1,
 383                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 384                                        BIT(NL80211_CHAN_WIDTH_20) |
 385                                        BIT(NL80211_CHAN_WIDTH_40) |
 386                                        BIT(NL80211_CHAN_WIDTH_80) |
 387                                        BIT(NL80211_CHAN_WIDTH_160),
 388         }
 389 };
 390
 391 static spinlock_t hwsim_radio_lock;
 392 static struct list_head hwsim_radios;
 393 static int hwsim_radio_idx;
 394
 395 static struct platform_driver mac80211_hwsim_driver = {
 396         .driver = {
 397                 .name = "mac80211_hwsim",
 398                 .owner = THIS_MODULE,
 399         },
 400 };
 401
 402 struct mac80211_hwsim_data {
 403         struct list_head list;
 404         struct ieee80211_hw *hw;
 405         struct device *dev;
 406         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 407         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 408         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 409         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 410         struct ieee80211_iface_combination if_combination;
 411
 412         struct mac_address addresses[2];
 413         int channels, idx;
 414         bool use_chanctx;
 415         bool destroy_on_close;
 416         struct work_struct destroy_work;
 417         u32 portid;
 418
 419         struct ieee80211_channel *tmp_chan;
 420         struct delayed_work roc_done;
 421         struct delayed_work hw_scan;
 422         struct cfg80211_scan_request *hw_scan_request;
 423         struct ieee80211_vif *hw_scan_vif;
 424         int scan_chan_idx;
 425         u8 scan_addr[ETH_ALEN];
 426
 427         struct ieee80211_channel *channel;
 428         u64 beacon_int  /* beacon interval in us */;
 429         unsigned int rx_filter;
 430         bool started, idle, scanning;
 431         struct mutex mutex;
 432         struct tasklet_hrtimer beacon_timer;
 433         enum ps_mode {
 434                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 435         } ps;
 436         bool ps_poll_pending;
 437         struct dentry *debugfs;
 438
 439         struct sk_buff_head pending;    /* packets pending */
 440         /*
 441          * Only radios in the same group can communicate together (the
 442          * channel has to match too). Each bit represents a group. A
 443          * radio can be in more than one group.
 444          */
 445         u64 group;
 446
 447         int power_level;
 448
 449         /* difference between this hw's clock and the real clock, in usecs */
 450         s64 tsf_offset;
 451         s64 bcn_delta;
 452         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 453         u64 abs_bcn_ts;
 454
 455         /* Stats */
 456         u64 tx_pkts;
 457         u64 rx_pkts;
 458         u64 tx_bytes;
 459         u64 rx_bytes;
 460         u64 tx_dropped;
 461         u64 tx_failed;
 462 };
 463
 464
 465 struct hwsim_radiotap_hdr {
 466         struct ieee80211_radiotap_header hdr;
 467         __le64 rt_tsft;
 468         u8 rt_flags;
 469         u8 rt_rate;
 470         __le16 rt_channel;
 471         __le16 rt_chbitmask;
 472 } __packed;
 473
 474 struct hwsim_radiotap_ack_hdr {
 475         struct ieee80211_radiotap_header hdr;
 476         u8 rt_flags;
 477         u8 pad;
 478         __le16 rt_channel;
 479         __le16 rt_chbitmask;
 480 } __packed;
 481
 482 /* MAC80211_HWSIM netlinf family */
 483 static struct genl_family hwsim_genl_family = {
 484         .id = GENL_ID_GENERATE,
 485         .hdrsize = 0,
 486         .name = "MAC80211_HWSIM",
 487         .version = 1,
 488         .maxattr = HWSIM_ATTR_MAX,
 489 };
 490
 491 enum hwsim_multicast_groups {
 492         HWSIM_MCGRP_CONFIG,
 493 };
 494
 495 static const struct genl_multicast_group hwsim_mcgrps[] = {
 496         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 497 };
 498
 499 /* MAC80211_HWSIM netlink policy */
 500
 501 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 502         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 503         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 504         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 505                                .len = IEEE80211_MAX_DATA_LEN },
 506         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 507         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 508         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 509         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 510                                  .len = IEEE80211_TX_MAX_RATES *
 511                                         sizeof(struct hwsim_tx_rate)},
 512         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 513         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 514         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 515         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 516         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 517         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 518         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 519         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 520         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 521         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 522         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 523 };
 524
 525 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 526                                     struct sk_buff *skb,
 527                                     struct ieee80211_channel *chan);
 528
 529 /* sysfs attributes */
 530 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 531 {
 532         struct mac80211_hwsim_data *data = dat;
 533         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 534         struct sk_buff *skb;
 535         struct ieee80211_pspoll *pspoll;
 536
 537         if (!vp->assoc)
 538                 return;
 539
 540         wiphy_debug(data->hw->wiphy,
 541                     "%s: send PS-Poll to %pM for aid %d\n",
 542                     __func__, vp->bssid, vp->aid);
 543
 544         skb = dev_alloc_skb(sizeof(*pspoll));
 545         if (!skb)
 546                 return;
 547         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 548         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 549                                             IEEE80211_STYPE_PSPOLL |
 550                                             IEEE80211_FCTL_PM);
 551         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 552         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 553         memcpy(pspoll->ta, mac, ETH_ALEN);
 554
 555         rcu_read_lock();
 556         mac80211_hwsim_tx_frame(data->hw, skb,
 557                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 558         rcu_read_unlock();
 559 }
 560
 561 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 562                                 struct ieee80211_vif *vif, int ps)
 563 {
 564         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 565         struct sk_buff *skb;
 566         struct ieee80211_hdr *hdr;
 567
 568         if (!vp->assoc)
 569                 return;
 570
 571         wiphy_debug(data->hw->wiphy,
 572                     "%s: send data::nullfunc to %pM ps=%d\n",
 573                     __func__, vp->bssid, ps);
 574
 575         skb = dev_alloc_skb(sizeof(*hdr));
 576         if (!skb)
 577                 return;
 578         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 579         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 580                                          IEEE80211_STYPE_NULLFUNC |
 581                                          (ps ? IEEE80211_FCTL_PM : 0));
 582         hdr->duration_id = cpu_to_le16(0);
 583         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 584         memcpy(hdr->addr2, mac, ETH_ALEN);
 585         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 586
 587         rcu_read_lock();
 588         mac80211_hwsim_tx_frame(data->hw, skb,
 589                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 590         rcu_read_unlock();
 591 }
 592
 593
 594 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 595                                    struct ieee80211_vif *vif)
 596 {
 597         struct mac80211_hwsim_data *data = dat;
 598         hwsim_send_nullfunc(data, mac, vif, 1);
 599 }
 600
 601 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 602                                       struct ieee80211_vif *vif)
 603 {
 604         struct mac80211_hwsim_data *data = dat;
 605         hwsim_send_nullfunc(data, mac, vif, 0);
 606 }
 607
 608 static int hwsim_fops_ps_read(void *dat, u64 *val)
 609 {
 610         struct mac80211_hwsim_data *data = dat;
 611         *val = data->ps;
 612         return 0;
 613 }
 614
 615 static int hwsim_fops_ps_write(void *dat, u64 val)
 616 {
 617         struct mac80211_hwsim_data *data = dat;
 618         enum ps_mode old_ps;
 619
 620         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 621             val != PS_MANUAL_POLL)
 622                 return -EINVAL;
 623
 624         old_ps = data->ps;
 625         data->ps = val;
 626
 627         if (val == PS_MANUAL_POLL) {
 628                 ieee80211_iterate_active_interfaces(data->hw,
 629                                                     IEEE80211_IFACE_ITER_NORMAL,
 630                                                     hwsim_send_ps_poll, data);
 631                 data->ps_poll_pending = true;
 632         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 633                 ieee80211_iterate_active_interfaces(data->hw,
 634                                                     IEEE80211_IFACE_ITER_NORMAL,
 635                                                     hwsim_send_nullfunc_ps,
 636                                                     data);
 637         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 638                 ieee80211_iterate_active_interfaces(data->hw,
 639                                                     IEEE80211_IFACE_ITER_NORMAL,
 640                                                     hwsim_send_nullfunc_no_ps,
 641                                                     data);
 642         }
 643
 644         return 0;
 645 }
 646
 647 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 648                         "%llu\n");
 649
 650 static int hwsim_write_simulate_radar(void *dat, u64 val)
 651 {
 652         struct mac80211_hwsim_data *data = dat;
 653
 654         ieee80211_radar_detected(data->hw);
 655
 656         return 0;
 657 }
 658
 659 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 660                         hwsim_write_simulate_radar, "%llu\n");
 661
 662 static int hwsim_fops_group_read(void *dat, u64 *val)
 663 {
 664         struct mac80211_hwsim_data *data = dat;
 665         *val = data->group;
 666         return 0;
 667 }
 668
 669 static int hwsim_fops_group_write(void *dat, u64 val)
 670 {
 671         struct mac80211_hwsim_data *data = dat;
 672         data->group = val;
 673         return 0;
 674 }
 675
 676 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 677                         hwsim_fops_group_read, hwsim_fops_group_write,
 678                         "%llx\n");
 679
 680 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 681                                         struct net_device *dev)
 682 {
 683         /* TODO: allow packet injection */
 684         dev_kfree_skb(skb);
 685         return NETDEV_TX_OK;
 686 }
 687
 688 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 689 {
 690         return ktime_to_us(ktime_get_real());
 691 }
 692
 693 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 694 {
 695         u64 now = mac80211_hwsim_get_tsf_raw();
 696         return cpu_to_le64(now + data->tsf_offset);
 697 }
 698
 699 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 700                                   struct ieee80211_vif *vif)
 701 {
 702         struct mac80211_hwsim_data *data = hw->priv;
 703         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 704 }
 705
 706 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 707                 struct ieee80211_vif *vif, u64 tsf)
 708 {
 709         struct mac80211_hwsim_data *data = hw->priv;
 710         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 711         u32 bcn_int = data->beacon_int;
 712         u64 delta = abs64(tsf - now);
 713
 714         /* adjust after beaconing with new timestamp at old TBTT */
 715         if (tsf > now) {
 716                 data->tsf_offset += delta;
 717                 data->bcn_delta = do_div(delta, bcn_int);
 718         } else {
 719                 data->tsf_offset -= delta;
 720                 data->bcn_delta = -do_div(delta, bcn_int);
 721         }
 722 }
 723
 724 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 725                                       struct sk_buff *tx_skb,
 726                                       struct ieee80211_channel *chan)
 727 {
 728         struct mac80211_hwsim_data *data = hw->priv;
 729         struct sk_buff *skb;
 730         struct hwsim_radiotap_hdr *hdr;
 731         u16 flags;
 732         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 733         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 734
 735         if (!netif_running(hwsim_mon))
 736                 return;
 737
 738         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 739         if (skb == NULL)
 740                 return;
 741
 742         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 743         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 744         hdr->hdr.it_pad = 0;
 745         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 746         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 747                                           (1 << IEEE80211_RADIOTAP_RATE) |
 748                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 749                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 750         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 751         hdr->rt_flags = 0;
 752         hdr->rt_rate = txrate->bitrate / 5;
 753         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 754         flags = IEEE80211_CHAN_2GHZ;
 755         if (txrate->flags & IEEE80211_RATE_ERP_G)
 756                 flags |= IEEE80211_CHAN_OFDM;
 757         else
 758                 flags |= IEEE80211_CHAN_CCK;
 759         hdr->rt_chbitmask = cpu_to_le16(flags);
 760
 761         skb->dev = hwsim_mon;
 762         skb_set_mac_header(skb, 0);
 763         skb->ip_summed = CHECKSUM_UNNECESSARY;
 764         skb->pkt_type = PACKET_OTHERHOST;
 765         skb->protocol = htons(ETH_P_802_2);
 766         memset(skb->cb, 0, sizeof(skb->cb));
 767         netif_rx(skb);
 768 }
 769
 770
 771 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 772                                        const u8 *addr)
 773 {
 774         struct sk_buff *skb;
 775         struct hwsim_radiotap_ack_hdr *hdr;
 776         u16 flags;
 777         struct ieee80211_hdr *hdr11;
 778
 779         if (!netif_running(hwsim_mon))
 780                 return;
 781
 782         skb = dev_alloc_skb(100);
 783         if (skb == NULL)
 784                 return;
 785
 786         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 787         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 788         hdr->hdr.it_pad = 0;
 789         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 790         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 791                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 792         hdr->rt_flags = 0;
 793         hdr->pad = 0;
 794         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 795         flags = IEEE80211_CHAN_2GHZ;
 796         hdr->rt_chbitmask = cpu_to_le16(flags);
 797
 798         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 799         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 800                                            IEEE80211_STYPE_ACK);
 801         hdr11->duration_id = cpu_to_le16(0);
 802         memcpy(hdr11->addr1, addr, ETH_ALEN);
 803
 804         skb->dev = hwsim_mon;
 805         skb_set_mac_header(skb, 0);
 806         skb->ip_summed = CHECKSUM_UNNECESSARY;
 807         skb->pkt_type = PACKET_OTHERHOST;
 808         skb->protocol = htons(ETH_P_802_2);
 809         memset(skb->cb, 0, sizeof(skb->cb));
 810         netif_rx(skb);
 811 }
 812
 813 struct mac80211_hwsim_addr_match_data {
 814         u8 addr[ETH_ALEN];
 815         bool ret;
 816 };
 817
 818 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 819                                      struct ieee80211_vif *vif)
 820 {
 821         struct mac80211_hwsim_addr_match_data *md = data;
 822
 823         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 824                 md->ret = true;
 825 }
 826
 827 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 828                                       const u8 *addr)
 829 {
 830         struct mac80211_hwsim_addr_match_data md = {
 831                 .ret = false,
 832         };
 833
 834         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 835                 return true;
 836
 837         memcpy(md.addr, addr, ETH_ALEN);
 838
 839         ieee80211_iterate_active_interfaces_atomic(data->hw,
 840                                                    IEEE80211_IFACE_ITER_NORMAL,
 841                                                    mac80211_hwsim_addr_iter,
 842                                                    &md);
 843
 844         return md.ret;
 845 }
 846
 847 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 848                            struct sk_buff *skb)
 849 {
 850         switch (data->ps) {
 851         case PS_DISABLED:
 852                 return true;
 853         case PS_ENABLED:
 854                 return false;
 855         case PS_AUTO_POLL:
 856                 /* TODO: accept (some) Beacons by default and other frames only
 857                  * if pending PS-Poll has been sent */
 858                 return true;
 859         case PS_MANUAL_POLL:
 860                 /* Allow unicast frames to own address if there is a pending
 861                  * PS-Poll */
 862                 if (data->ps_poll_pending &&
 863                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 864                         data->ps_poll_pending = false;
 865                         return true;
 866                 }
 867                 return false;
 868         }
 869
 870         return true;
 871 }
 872
 873 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 874                                        struct sk_buff *my_skb,
 875                                        int dst_portid)
 876 {
 877         struct sk_buff *skb;
 878         struct mac80211_hwsim_data *data = hw->priv;
 879         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 880         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 881         void *msg_head;
 882         unsigned int hwsim_flags = 0;
 883         int i;
 884         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 885
 886         if (data->ps != PS_DISABLED)
 887                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 888         /* If the queue contains MAX_QUEUE skb's drop some */
 889         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 890                 /* Droping until WARN_QUEUE level */
 891                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
 892                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
 893                         data->tx_dropped++;
 894                 }
 895         }
 896
 897         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 898         if (skb == NULL)
 899                 goto nla_put_failure;
 900
 901         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 902                                HWSIM_CMD_FRAME);
 903         if (msg_head == NULL) {
 904                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 905                 goto nla_put_failure;
 906         }
 907
 908         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 909                     ETH_ALEN, data->addresses[1].addr))
 910                 goto nla_put_failure;
 911
 912         /* We get the skb->data */
 913         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 914                 goto nla_put_failure;
 915
 916         /* We get the flags for this transmission, and we translate them to
 917            wmediumd flags  */
 918
 919         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 920                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 921
 922         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 923                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 924
 925         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 926                 goto nla_put_failure;
 927
 928         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
 929                 goto nla_put_failure;
 930
 931         /* We get the tx control (rate and retries) info*/
 932
 933         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 934                 tx_attempts[i].idx = info->status.rates[i].idx;
 935                 tx_attempts[i].count = info->status.rates[i].count;
 936         }
 937
 938         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 939                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 940                     tx_attempts))
 941                 goto nla_put_failure;
 942
 943         /* We create a cookie to identify this skb */
 944         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 945                 goto nla_put_failure;
 946
 947         genlmsg_end(skb, msg_head);
 948         genlmsg_unicast(&init_net, skb, dst_portid);
 949
 950         /* Enqueue the packet */
 951         skb_queue_tail(&data->pending, my_skb);
 952         data->tx_pkts++;
 953         data->tx_bytes += my_skb->len;
 954         return;
 955
 956 nla_put_failure:
 957         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 958         ieee80211_free_txskb(hw, my_skb);
 959         data->tx_failed++;
 960 }
 961
 962 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 963                                struct ieee80211_channel *c2)
 964 {
 965         if (!c1 || !c2)
 966                 return false;
 967
 968         return c1->center_freq == c2->center_freq;
 969 }
 970
 971 struct tx_iter_data {
 972         struct ieee80211_channel *channel;
 973         bool receive;
 974 };
 975
 976 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 977                                    struct ieee80211_vif *vif)
 978 {
 979         struct tx_iter_data *data = _data;
 980
 981         if (!vif->chanctx_conf)
 982                 return;
 983
 984         if (!hwsim_chans_compat(data->channel,
 985                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 986                 return;
 987
 988         data->receive = true;
 989 }
 990
 991 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
 992 {
 993         /*
 994          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
 995          * e.g. like this:
 996          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
 997          * (but you should use a valid OUI, not that)
 998          *
 999          * If anyone wants to 'donate' a radiotap OUI/subns code
1000          * please send a patch removing this #ifdef and changing
1001          * the values accordingly.
1002          */
1003 #ifdef HWSIM_RADIOTAP_OUI
1004         struct ieee80211_vendor_radiotap *rtap;
1005
1006         /*
1007          * Note that this code requires the headroom in the SKB
1008          * that was allocated earlier.
1009          */
1010         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1011         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1012         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1013         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1014         rtap->subns = 127;
1015
1016         /*
1017          * Radiotap vendor namespaces can (and should) also be
1018          * split into fields by using the standard radiotap
1019          * presence bitmap mechanism. Use just BIT(0) here for
1020          * the presence bitmap.
1021          */
1022         rtap->present = BIT(0);
1023         /* We have 8 bytes of (dummy) data */
1024         rtap->len = 8;
1025         /* For testing, also require it to be aligned */
1026         rtap->align = 8;
1027         /* And also test that padding works, 4 bytes */
1028         rtap->pad = 4;
1029         /* push the data */
1030         memcpy(rtap->data, "ABCDEFGH", 8);
1031         /* make sure to clear padding, mac80211 doesn't */
1032         memset(rtap->data + 8, 0, 4);
1033
1034         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1035 #endif
1036 }
1037
1038 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1039                                           struct sk_buff *skb,
1040                                           struct ieee80211_channel *chan)
1041 {
1042         struct mac80211_hwsim_data *data = hw->priv, *data2;
1043         bool ack = false;
1044         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1045         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1046         struct ieee80211_rx_status rx_status;
1047         u64 now;
1048
1049         memset(&rx_status, 0, sizeof(rx_status));
1050         rx_status.flag |= RX_FLAG_MACTIME_START;
1051         rx_status.freq = chan->center_freq;
1052         rx_status.band = chan->band;
1053         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1054                 rx_status.rate_idx =
1055                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1056                 rx_status.vht_nss =
1057                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1058                 rx_status.flag |= RX_FLAG_VHT;
1059         } else {
1060                 rx_status.rate_idx = info->control.rates[0].idx;
1061                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1062                         rx_status.flag |= RX_FLAG_HT;
1063         }
1064         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1065                 rx_status.flag |= RX_FLAG_40MHZ;
1066         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1067                 rx_status.flag |= RX_FLAG_SHORT_GI;
1068         /* TODO: simulate real signal strength (and optional packet loss) */
1069         rx_status.signal = data->power_level - 50;
1070
1071         if (data->ps != PS_DISABLED)
1072                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1073
1074         /* release the skb's source info */
1075         skb_orphan(skb);
1076         skb_dst_drop(skb);
1077         skb->mark = 0;
1078         secpath_reset(skb);
1079         nf_reset(skb);
1080
1081         /*
1082          * Get absolute mactime here so all HWs RX at the "same time", and
1083          * absolute TX time for beacon mactime so the timestamp matches.
1084          * Giving beacons a different mactime than non-beacons looks messy, but
1085          * it helps the Toffset be exact and a ~10us mactime discrepancy
1086          * probably doesn't really matter.
1087          */
1088         if (ieee80211_is_beacon(hdr->frame_control) ||
1089             ieee80211_is_probe_resp(hdr->frame_control))
1090                 now = data->abs_bcn_ts;
1091         else
1092                 now = mac80211_hwsim_get_tsf_raw();
1093
1094         /* Copy skb to all enabled radios that are on the current frequency */
1095         spin_lock(&hwsim_radio_lock);
1096         list_for_each_entry(data2, &hwsim_radios, list) {
1097                 struct sk_buff *nskb;
1098                 struct tx_iter_data tx_iter_data = {
1099                         .receive = false,
1100                         .channel = chan,
1101                 };
1102
1103                 if (data == data2)
1104                         continue;
1105
1106                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1107                     !hwsim_ps_rx_ok(data2, skb))
1108                         continue;
1109
1110                 if (!(data->group & data2->group))
1111                         continue;
1112
1113                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1114                     !hwsim_chans_compat(chan, data2->channel)) {
1115                         ieee80211_iterate_active_interfaces_atomic(
1116                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1117                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1118                         if (!tx_iter_data.receive)
1119                                 continue;
1120                 }
1121
1122                 /*
1123                  * reserve some space for our vendor and the normal
1124                  * radiotap header, since we're copying anyway
1125                  */
1126                 if (skb->len < PAGE_SIZE && paged_rx) {
1127                         struct page *page = alloc_page(GFP_ATOMIC);
1128
1129                         if (!page)
1130                                 continue;
1131
1132                         nskb = dev_alloc_skb(128);
1133                         if (!nskb) {
1134                                 __free_page(page);
1135                                 continue;
1136                         }
1137
1138                         memcpy(page_address(page), skb->data, skb->len);
1139                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1140                 } else {
1141                         nskb = skb_copy(skb, GFP_ATOMIC);
1142                         if (!nskb)
1143                                 continue;
1144                 }
1145
1146                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1147                         ack = true;
1148
1149                 rx_status.mactime = now + data2->tsf_offset;
1150
1151                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1152
1153                 mac80211_hwsim_add_vendor_rtap(nskb);
1154
1155                 data2->rx_pkts++;
1156                 data2->rx_bytes += nskb->len;
1157                 ieee80211_rx_irqsafe(data2->hw, nskb);
1158         }
1159         spin_unlock(&hwsim_radio_lock);
1160
1161         return ack;
1162 }
1163
1164 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1165                               struct ieee80211_tx_control *control,
1166                               struct sk_buff *skb)
1167 {
1168         struct mac80211_hwsim_data *data = hw->priv;
1169         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1170         struct ieee80211_chanctx_conf *chanctx_conf;
1171         struct ieee80211_channel *channel;
1172         bool ack;
1173         u32 _portid;
1174
1175         if (WARN_ON(skb->len < 10)) {
1176                 /* Should not happen; just a sanity check for addr1 use */
1177                 ieee80211_free_txskb(hw, skb);
1178                 return;
1179         }
1180
1181         if (!data->use_chanctx) {
1182                 channel = data->channel;
1183         } else if (txi->hw_queue == 4) {
1184                 channel = data->tmp_chan;
1185         } else {
1186                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1187                 if (chanctx_conf)
1188                         channel = chanctx_conf->def.chan;
1189                 else
1190                         channel = NULL;
1191         }
1192
1193         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1194                 ieee80211_free_txskb(hw, skb);
1195                 return;
1196         }
1197
1198         if (data->idle && !data->tmp_chan) {
1199                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1200                 ieee80211_free_txskb(hw, skb);
1201                 return;
1202         }
1203
1204         if (txi->control.vif)
1205                 hwsim_check_magic(txi->control.vif);
1206         if (control->sta)
1207                 hwsim_check_sta_magic(control->sta);
1208
1209         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1210                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1211                                        txi->control.rates,
1212                                        ARRAY_SIZE(txi->control.rates));
1213
1214         txi->rate_driver_data[0] = channel;
1215         mac80211_hwsim_monitor_rx(hw, skb, channel);
1216
1217         /* wmediumd mode check */
1218         _portid = ACCESS_ONCE(wmediumd_portid);
1219
1220         if (_portid)
1221                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1222
1223         /* NO wmediumd detected, perfect medium simulation */
1224         data->tx_pkts++;
1225         data->tx_bytes += skb->len;
1226         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1227
1228         if (ack && skb->len >= 16) {
1229                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1230                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1231         }
1232
1233         ieee80211_tx_info_clear_status(txi);
1234
1235         /* frame was transmitted at most favorable rate at first attempt */
1236         txi->control.rates[0].count = 1;
1237         txi->control.rates[1].idx = -1;
1238
1239         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1240                 txi->flags |= IEEE80211_TX_STAT_ACK;
1241         ieee80211_tx_status_irqsafe(hw, skb);
1242 }
1243
1244
1245 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1246 {
1247         struct mac80211_hwsim_data *data = hw->priv;
1248         wiphy_debug(hw->wiphy, "%s\n", __func__);
1249         data->started = true;
1250         return 0;
1251 }
1252
1253
1254 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1255 {
1256         struct mac80211_hwsim_data *data = hw->priv;
1257         data->started = false;
1258         tasklet_hrtimer_cancel(&data->beacon_timer);
1259         wiphy_debug(hw->wiphy, "%s\n", __func__);
1260 }
1261
1262
1263 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1264                                         struct ieee80211_vif *vif)
1265 {
1266         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1267                     __func__, ieee80211_vif_type_p2p(vif),
1268                     vif->addr);
1269         hwsim_set_magic(vif);
1270
1271         vif->cab_queue = 0;
1272         vif->hw_queue[IEEE80211_AC_VO] = 0;
1273         vif->hw_queue[IEEE80211_AC_VI] = 1;
1274         vif->hw_queue[IEEE80211_AC_BE] = 2;
1275         vif->hw_queue[IEEE80211_AC_BK] = 3;
1276
1277         return 0;
1278 }
1279
1280
1281 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1282                                            struct ieee80211_vif *vif,
1283                                            enum nl80211_iftype newtype,
1284                                            bool newp2p)
1285 {
1286         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1287         wiphy_debug(hw->wiphy,
1288                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1289                     __func__, ieee80211_vif_type_p2p(vif),
1290                     newtype, vif->addr);
1291         hwsim_check_magic(vif);
1292
1293         /*
1294          * interface may change from non-AP to AP in
1295          * which case this needs to be set up again
1296          */
1297         vif->cab_queue = 0;
1298
1299         return 0;
1300 }
1301
1302 static void mac80211_hwsim_remove_interface(
1303         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1304 {
1305         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1306                     __func__, ieee80211_vif_type_p2p(vif),
1307                     vif->addr);
1308         hwsim_check_magic(vif);
1309         hwsim_clear_magic(vif);
1310 }
1311
1312 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1313                                     struct sk_buff *skb,
1314                                     struct ieee80211_channel *chan)
1315 {
1316         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1317
1318         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1319                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1320                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1321                                        txi->control.rates,
1322                                        ARRAY_SIZE(txi->control.rates));
1323         }
1324
1325         mac80211_hwsim_monitor_rx(hw, skb, chan);
1326
1327         if (_pid)
1328                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1329
1330         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1331         dev_kfree_skb(skb);
1332 }
1333
1334 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1335                                      struct ieee80211_vif *vif)
1336 {
1337         struct mac80211_hwsim_data *data = arg;
1338         struct ieee80211_hw *hw = data->hw;
1339         struct ieee80211_tx_info *info;
1340         struct ieee80211_rate *txrate;
1341         struct ieee80211_mgmt *mgmt;
1342         struct sk_buff *skb;
1343
1344         hwsim_check_magic(vif);
1345
1346         if (vif->type != NL80211_IFTYPE_AP &&
1347             vif->type != NL80211_IFTYPE_MESH_POINT &&
1348             vif->type != NL80211_IFTYPE_ADHOC)
1349                 return;
1350
1351         skb = ieee80211_beacon_get(hw, vif);
1352         if (skb == NULL)
1353                 return;
1354         info = IEEE80211_SKB_CB(skb);
1355         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1356                 ieee80211_get_tx_rates(vif, NULL, skb,
1357                                        info->control.rates,
1358                                        ARRAY_SIZE(info->control.rates));
1359
1360         txrate = ieee80211_get_tx_rate(hw, info);
1361
1362         mgmt = (struct ieee80211_mgmt *) skb->data;
1363         /* fake header transmission time */
1364         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1365         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1366                                                data->tsf_offset +
1367                                                24 * 8 * 10 / txrate->bitrate);
1368
1369         mac80211_hwsim_tx_frame(hw, skb,
1370                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1371
1372         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1373                 ieee80211_csa_finish(vif);
1374 }
1375
1376 static enum hrtimer_restart
1377 mac80211_hwsim_beacon(struct hrtimer *timer)
1378 {
1379         struct mac80211_hwsim_data *data =
1380                 container_of(timer, struct mac80211_hwsim_data,
1381                              beacon_timer.timer);
1382         struct ieee80211_hw *hw = data->hw;
1383         u64 bcn_int = data->beacon_int;
1384         ktime_t next_bcn;
1385
1386         if (!data->started)
1387                 goto out;
1388
1389         ieee80211_iterate_active_interfaces_atomic(
1390                 hw, IEEE80211_IFACE_ITER_NORMAL,
1391                 mac80211_hwsim_beacon_tx, data);
1392
1393         /* beacon at new TBTT + beacon interval */
1394         if (data->bcn_delta) {
1395                 bcn_int -= data->bcn_delta;
1396                 data->bcn_delta = 0;
1397         }
1398
1399         next_bcn = ktime_add(hrtimer_get_expires(timer),
1400                              ns_to_ktime(bcn_int * 1000));
1401         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1402 out:
1403         return HRTIMER_NORESTART;
1404 }
1405
1406 static const char * const hwsim_chanwidths[] = {
1407         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1408         [NL80211_CHAN_WIDTH_20] = "ht20",
1409         [NL80211_CHAN_WIDTH_40] = "ht40",
1410         [NL80211_CHAN_WIDTH_80] = "vht80",
1411         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1412         [NL80211_CHAN_WIDTH_160] = "vht160",
1413 };
1414
1415 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1416 {
1417         struct mac80211_hwsim_data *data = hw->priv;
1418         struct ieee80211_conf *conf = &hw->conf;
1419         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1420                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1421                 [IEEE80211_SMPS_OFF] = "off",
1422                 [IEEE80211_SMPS_STATIC] = "static",
1423                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1424         };
1425
1426         if (conf->chandef.chan)
1427                 wiphy_debug(hw->wiphy,
1428                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1429                             __func__,
1430                             conf->chandef.chan->center_freq,
1431                             conf->chandef.center_freq1,
1432                             conf->chandef.center_freq2,
1433                             hwsim_chanwidths[conf->chandef.width],
1434                             !!(conf->flags & IEEE80211_CONF_IDLE),
1435                             !!(conf->flags & IEEE80211_CONF_PS),
1436                             smps_modes[conf->smps_mode]);
1437         else
1438                 wiphy_debug(hw->wiphy,
1439                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1440                             __func__,
1441                             !!(conf->flags & IEEE80211_CONF_IDLE),
1442                             !!(conf->flags & IEEE80211_CONF_PS),
1443                             smps_modes[conf->smps_mode]);
1444
1445         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1446
1447         data->channel = conf->chandef.chan;
1448
1449         WARN_ON(data->channel && data->use_chanctx);
1450
1451         data->power_level = conf->power_level;
1452         if (!data->started || !data->beacon_int)
1453                 tasklet_hrtimer_cancel(&data->beacon_timer);
1454         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1455                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1456                 u32 bcn_int = data->beacon_int;
1457                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1458
1459                 tasklet_hrtimer_start(&data->beacon_timer,
1460                                       ns_to_ktime(until_tbtt * 1000),
1461                                       HRTIMER_MODE_REL);
1462         }
1463
1464         return 0;
1465 }
1466
1467
1468 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1469                                             unsigned int changed_flags,
1470                                             unsigned int *total_flags,u64 multicast)
1471 {
1472         struct mac80211_hwsim_data *data = hw->priv;
1473
1474         wiphy_debug(hw->wiphy, "%s\n", __func__);
1475
1476         data->rx_filter = 0;
1477         if (*total_flags & FIF_PROMISC_IN_BSS)
1478                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1479         if (*total_flags & FIF_ALLMULTI)
1480                 data->rx_filter |= FIF_ALLMULTI;
1481
1482         *total_flags = data->rx_filter;
1483 }
1484
1485 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1486                                        struct ieee80211_vif *vif)
1487 {
1488         unsigned int *count = data;
1489         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1490
1491         if (vp->bcn_en)
1492                 (*count)++;
1493 }
1494
1495 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1496                                             struct ieee80211_vif *vif,
1497                                             struct ieee80211_bss_conf *info,
1498                                             u32 changed)
1499 {
1500         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1501         struct mac80211_hwsim_data *data = hw->priv;
1502
1503         hwsim_check_magic(vif);
1504
1505         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1506                     __func__, changed, vif->addr);
1507
1508         if (changed & BSS_CHANGED_BSSID) {
1509                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1510                             __func__, info->bssid);
1511                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1512         }
1513
1514         if (changed & BSS_CHANGED_ASSOC) {
1515                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1516                             info->assoc, info->aid);
1517                 vp->assoc = info->assoc;
1518                 vp->aid = info->aid;
1519         }
1520
1521         if (changed & BSS_CHANGED_BEACON_INT) {
1522                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1523                 data->beacon_int = info->beacon_int * 1024;
1524         }
1525
1526         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1527                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1528                 vp->bcn_en = info->enable_beacon;
1529                 if (data->started &&
1530                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1531                     info->enable_beacon) {
1532                         u64 tsf, until_tbtt;
1533                         u32 bcn_int;
1534                         if (WARN_ON(!data->beacon_int))
1535                                 data->beacon_int = 1000 * 1024;
1536                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1537                         bcn_int = data->beacon_int;
1538                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1539                         tasklet_hrtimer_start(&data->beacon_timer,
1540                                               ns_to_ktime(until_tbtt * 1000),
1541                                               HRTIMER_MODE_REL);
1542                 } else if (!info->enable_beacon) {
1543                         unsigned int count = 0;
1544                         ieee80211_iterate_active_interfaces_atomic(
1545                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1546                                 mac80211_hwsim_bcn_en_iter, &count);
1547                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1548                                     count);
1549                         if (count == 0)
1550                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1551                 }
1552         }
1553
1554         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1555                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1556                             info->use_cts_prot);
1557         }
1558
1559         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1560                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1561                             info->use_short_preamble);
1562         }
1563
1564         if (changed & BSS_CHANGED_ERP_SLOT) {
1565                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1566         }
1567
1568         if (changed & BSS_CHANGED_HT) {
1569                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1570                             info->ht_operation_mode);
1571         }
1572
1573         if (changed & BSS_CHANGED_BASIC_RATES) {
1574                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1575                             (unsigned long long) info->basic_rates);
1576         }
1577
1578         if (changed & BSS_CHANGED_TXPOWER)
1579                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1580 }
1581
1582 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1583                                   struct ieee80211_vif *vif,
1584                                   struct ieee80211_sta *sta)
1585 {
1586         hwsim_check_magic(vif);
1587         hwsim_set_sta_magic(sta);
1588
1589         return 0;
1590 }
1591
1592 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1593                                      struct ieee80211_vif *vif,
1594                                      struct ieee80211_sta *sta)
1595 {
1596         hwsim_check_magic(vif);
1597         hwsim_clear_sta_magic(sta);
1598
1599         return 0;
1600 }
1601
1602 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1603                                       struct ieee80211_vif *vif,
1604                                       enum sta_notify_cmd cmd,
1605                                       struct ieee80211_sta *sta)
1606 {
1607         hwsim_check_magic(vif);
1608
1609         switch (cmd) {
1610         case STA_NOTIFY_SLEEP:
1611         case STA_NOTIFY_AWAKE:
1612                 /* TODO: make good use of these flags */
1613                 break;
1614         default:
1615                 WARN(1, "Invalid sta notify: %d\n", cmd);
1616                 break;
1617         }
1618 }
1619
1620 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1621                                   struct ieee80211_sta *sta,
1622                                   bool set)
1623 {
1624         hwsim_check_sta_magic(sta);
1625         return 0;
1626 }
1627
1628 static int mac80211_hwsim_conf_tx(
1629         struct ieee80211_hw *hw,
1630         struct ieee80211_vif *vif, u16 queue,
1631         const struct ieee80211_tx_queue_params *params)
1632 {
1633         wiphy_debug(hw->wiphy,
1634                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1635                     __func__, queue,
1636                     params->txop, params->cw_min,
1637                     params->cw_max, params->aifs);
1638         return 0;
1639 }
1640
1641 static int mac80211_hwsim_get_survey(
1642         struct ieee80211_hw *hw, int idx,
1643         struct survey_info *survey)
1644 {
1645         struct ieee80211_conf *conf = &hw->conf;
1646
1647         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1648
1649         if (idx != 0)
1650                 return -ENOENT;
1651
1652         /* Current channel */
1653         survey->channel = conf->chandef.chan;
1654
1655         /*
1656          * Magically conjured noise level --- this is only ok for simulated hardware.
1657          *
1658          * A real driver which cannot determine the real channel noise MUST NOT
1659          * report any noise, especially not a magically conjured one :-)
1660          */
1661         survey->filled = SURVEY_INFO_NOISE_DBM;
1662         survey->noise = -92;
1663
1664         return 0;
1665 }
1666
1667 #ifdef CONFIG_NL80211_TESTMODE
1668 /*
1669  * This section contains example code for using netlink
1670  * attributes with the testmode command in nl80211.
1671  */
1672
1673 /* These enums need to be kept in sync with userspace */
1674 enum hwsim_testmode_attr {
1675         __HWSIM_TM_ATTR_INVALID = 0,
1676         HWSIM_TM_ATTR_CMD       = 1,
1677         HWSIM_TM_ATTR_PS        = 2,
1678
1679         /* keep last */
1680         __HWSIM_TM_ATTR_AFTER_LAST,
1681         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1682 };
1683
1684 enum hwsim_testmode_cmd {
1685         HWSIM_TM_CMD_SET_PS             = 0,
1686         HWSIM_TM_CMD_GET_PS             = 1,
1687         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1688         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1689 };
1690
1691 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1692         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1693         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1694 };
1695
1696 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1697                                        struct ieee80211_vif *vif,
1698                                        void *data, int len)
1699 {
1700         struct mac80211_hwsim_data *hwsim = hw->priv;
1701         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1702         struct sk_buff *skb;
1703         int err, ps;
1704
1705         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1706                         hwsim_testmode_policy);
1707         if (err)
1708                 return err;
1709
1710         if (!tb[HWSIM_TM_ATTR_CMD])
1711                 return -EINVAL;
1712
1713         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1714         case HWSIM_TM_CMD_SET_PS:
1715                 if (!tb[HWSIM_TM_ATTR_PS])
1716                         return -EINVAL;
1717                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1718                 return hwsim_fops_ps_write(hwsim, ps);
1719         case HWSIM_TM_CMD_GET_PS:
1720                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1721                                                 nla_total_size(sizeof(u32)));
1722                 if (!skb)
1723                         return -ENOMEM;
1724                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1725                         goto nla_put_failure;
1726                 return cfg80211_testmode_reply(skb);
1727         case HWSIM_TM_CMD_STOP_QUEUES:
1728                 ieee80211_stop_queues(hw);
1729                 return 0;
1730         case HWSIM_TM_CMD_WAKE_QUEUES:
1731                 ieee80211_wake_queues(hw);
1732                 return 0;
1733         default:
1734                 return -EOPNOTSUPP;
1735         }
1736
1737  nla_put_failure:
1738         kfree_skb(skb);
1739         return -ENOBUFS;
1740 }
1741 #endif
1742
1743 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1744                                        struct ieee80211_vif *vif,
1745                                        enum ieee80211_ampdu_mlme_action action,
1746                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1747                                        u8 buf_size)
1748 {
1749         switch (action) {
1750         case IEEE80211_AMPDU_TX_START:
1751                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1752                 break;
1753         case IEEE80211_AMPDU_TX_STOP_CONT:
1754         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1755         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1756                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1757                 break;
1758         case IEEE80211_AMPDU_TX_OPERATIONAL:
1759                 break;
1760         case IEEE80211_AMPDU_RX_START:
1761         case IEEE80211_AMPDU_RX_STOP:
1762                 break;
1763         default:
1764                 return -EOPNOTSUPP;
1765         }
1766
1767         return 0;
1768 }
1769
1770 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1771                                  struct ieee80211_vif *vif,
1772                                  u32 queues, bool drop)
1773 {
1774         /* Not implemented, queues only on kernel side */
1775 }
1776
1777 static void hw_scan_work(struct work_struct *work)
1778 {
1779         struct mac80211_hwsim_data *hwsim =
1780                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1781         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1782         int dwell, i;
1783
1784         mutex_lock(&hwsim->mutex);
1785         if (hwsim->scan_chan_idx >= req->n_channels) {
1786                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1787                 ieee80211_scan_completed(hwsim->hw, false);
1788                 hwsim->hw_scan_request = NULL;
1789                 hwsim->hw_scan_vif = NULL;
1790                 hwsim->tmp_chan = NULL;
1791                 mutex_unlock(&hwsim->mutex);
1792                 return;
1793         }
1794
1795         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1796                     req->channels[hwsim->scan_chan_idx]->center_freq);
1797
1798         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1799         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1800             !req->n_ssids) {
1801                 dwell = 120;
1802         } else {
1803                 dwell = 30;
1804                 /* send probes */
1805                 for (i = 0; i < req->n_ssids; i++) {
1806                         struct sk_buff *probe;
1807
1808                         probe = ieee80211_probereq_get(hwsim->hw,
1809                                                        hwsim->scan_addr,
1810                                                        req->ssids[i].ssid,
1811                                                        req->ssids[i].ssid_len,
1812                                                        req->ie_len);
1813                         if (!probe)
1814                                 continue;
1815
1816                         if (req->ie_len)
1817                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1818                                        req->ie_len);
1819
1820                         local_bh_disable();
1821                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1822                                                 hwsim->tmp_chan);
1823                         local_bh_enable();
1824                 }
1825         }
1826         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1827                                      msecs_to_jiffies(dwell));
1828         hwsim->scan_chan_idx++;
1829         mutex_unlock(&hwsim->mutex);
1830 }
1831
1832 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1833                                   struct ieee80211_vif *vif,
1834                                   struct ieee80211_scan_request *hw_req)
1835 {
1836         struct mac80211_hwsim_data *hwsim = hw->priv;
1837         struct cfg80211_scan_request *req = &hw_req->req;
1838
1839         mutex_lock(&hwsim->mutex);
1840         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1841                 mutex_unlock(&hwsim->mutex);
1842                 return -EBUSY;
1843         }
1844         hwsim->hw_scan_request = req;
1845         hwsim->hw_scan_vif = vif;
1846         hwsim->scan_chan_idx = 0;
1847         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1848                 get_random_mask_addr(hwsim->scan_addr,
1849                                      hw_req->req.mac_addr,
1850                                      hw_req->req.mac_addr_mask);
1851         else
1852                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1853         mutex_unlock(&hwsim->mutex);
1854
1855         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1856
1857         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1858
1859         return 0;
1860 }
1861
1862 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1863                                           struct ieee80211_vif *vif)
1864 {
1865         struct mac80211_hwsim_data *hwsim = hw->priv;
1866
1867         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1868
1869         cancel_delayed_work_sync(&hwsim->hw_scan);
1870
1871         mutex_lock(&hwsim->mutex);
1872         ieee80211_scan_completed(hwsim->hw, true);
1873         hwsim->tmp_chan = NULL;
1874         hwsim->hw_scan_request = NULL;
1875         hwsim->hw_scan_vif = NULL;
1876         mutex_unlock(&hwsim->mutex);
1877 }
1878
1879 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1880                                    struct ieee80211_vif *vif,
1881                                    const u8 *mac_addr)
1882 {
1883         struct mac80211_hwsim_data *hwsim = hw->priv;
1884
1885         mutex_lock(&hwsim->mutex);
1886
1887         if (hwsim->scanning) {
1888                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1889                 goto out;
1890         }
1891
1892         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1893
1894         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1895         hwsim->scanning = true;
1896
1897 out:
1898         mutex_unlock(&hwsim->mutex);
1899 }
1900
1901 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
1902                                             struct ieee80211_vif *vif)
1903 {
1904         struct mac80211_hwsim_data *hwsim = hw->priv;
1905
1906         mutex_lock(&hwsim->mutex);
1907
1908         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1909         hwsim->scanning = false;
1910         memset(hwsim->scan_addr, 0, ETH_ALEN);
1911
1912         mutex_unlock(&hwsim->mutex);
1913 }
1914
1915 static void hw_roc_done(struct work_struct *work)
1916 {
1917         struct mac80211_hwsim_data *hwsim =
1918                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1919
1920         mutex_lock(&hwsim->mutex);
1921         ieee80211_remain_on_channel_expired(hwsim->hw);
1922         hwsim->tmp_chan = NULL;
1923         mutex_unlock(&hwsim->mutex);
1924
1925         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1926 }
1927
1928 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1929                               struct ieee80211_vif *vif,
1930                               struct ieee80211_channel *chan,
1931                               int duration,
1932                               enum ieee80211_roc_type type)
1933 {
1934         struct mac80211_hwsim_data *hwsim = hw->priv;
1935
1936         mutex_lock(&hwsim->mutex);
1937         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1938                 mutex_unlock(&hwsim->mutex);
1939                 return -EBUSY;
1940         }
1941
1942         hwsim->tmp_chan = chan;
1943         mutex_unlock(&hwsim->mutex);
1944
1945         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1946                     chan->center_freq, duration);
1947
1948         ieee80211_ready_on_channel(hw);
1949
1950         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1951                                      msecs_to_jiffies(duration));
1952         return 0;
1953 }
1954
1955 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1956 {
1957         struct mac80211_hwsim_data *hwsim = hw->priv;
1958
1959         cancel_delayed_work_sync(&hwsim->roc_done);
1960
1961         mutex_lock(&hwsim->mutex);
1962         hwsim->tmp_chan = NULL;
1963         mutex_unlock(&hwsim->mutex);
1964
1965         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1966
1967         return 0;
1968 }
1969
1970 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1971                                       struct ieee80211_chanctx_conf *ctx)
1972 {
1973         hwsim_set_chanctx_magic(ctx);
1974         wiphy_debug(hw->wiphy,
1975                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1976                     ctx->def.chan->center_freq, ctx->def.width,
1977                     ctx->def.center_freq1, ctx->def.center_freq2);
1978         return 0;
1979 }
1980
1981 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1982                                           struct ieee80211_chanctx_conf *ctx)
1983 {
1984         wiphy_debug(hw->wiphy,
1985                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1986                     ctx->def.chan->center_freq, ctx->def.width,
1987                     ctx->def.center_freq1, ctx->def.center_freq2);
1988         hwsim_check_chanctx_magic(ctx);
1989         hwsim_clear_chanctx_magic(ctx);
1990 }
1991
1992 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1993                                           struct ieee80211_chanctx_conf *ctx,
1994                                           u32 changed)
1995 {
1996         hwsim_check_chanctx_magic(ctx);
1997         wiphy_debug(hw->wiphy,
1998                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1999                     ctx->def.chan->center_freq, ctx->def.width,
2000                     ctx->def.center_freq1, ctx->def.center_freq2);
2001 }
2002
2003 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2004                                              struct ieee80211_vif *vif,
2005                                              struct ieee80211_chanctx_conf *ctx)
2006 {
2007         hwsim_check_magic(vif);
2008         hwsim_check_chanctx_magic(ctx);
2009
2010         return 0;
2011 }
2012
2013 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2014                                                 struct ieee80211_vif *vif,
2015                                                 struct ieee80211_chanctx_conf *ctx)
2016 {
2017         hwsim_check_magic(vif);
2018         hwsim_check_chanctx_magic(ctx);
2019 }
2020
2021 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2022         "tx_pkts_nic",
2023         "tx_bytes_nic",
2024         "rx_pkts_nic",
2025         "rx_bytes_nic",
2026         "d_tx_dropped",
2027         "d_tx_failed",
2028         "d_ps_mode",
2029         "d_group",
2030         "d_tx_power",
2031 };
2032
2033 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2034
2035 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2036                                           struct ieee80211_vif *vif,
2037                                           u32 sset, u8 *data)
2038 {
2039         if (sset == ETH_SS_STATS)
2040                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2041                        sizeof(mac80211_hwsim_gstrings_stats));
2042 }
2043
2044 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2045                                             struct ieee80211_vif *vif, int sset)
2046 {
2047         if (sset == ETH_SS_STATS)
2048                 return MAC80211_HWSIM_SSTATS_LEN;
2049         return 0;
2050 }
2051
2052 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2053                                         struct ieee80211_vif *vif,
2054                                         struct ethtool_stats *stats, u64 *data)
2055 {
2056         struct mac80211_hwsim_data *ar = hw->priv;
2057         int i = 0;
2058
2059         data[i++] = ar->tx_pkts;
2060         data[i++] = ar->tx_bytes;
2061         data[i++] = ar->rx_pkts;
2062         data[i++] = ar->rx_bytes;
2063         data[i++] = ar->tx_dropped;
2064         data[i++] = ar->tx_failed;
2065         data[i++] = ar->ps;
2066         data[i++] = ar->group;
2067         data[i++] = ar->power_level;
2068
2069         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2070 }
2071
2072 static const struct ieee80211_ops mac80211_hwsim_ops = {
2073         .tx = mac80211_hwsim_tx,
2074         .start = mac80211_hwsim_start,
2075         .stop = mac80211_hwsim_stop,
2076         .add_interface = mac80211_hwsim_add_interface,
2077         .change_interface = mac80211_hwsim_change_interface,
2078         .remove_interface = mac80211_hwsim_remove_interface,
2079         .config = mac80211_hwsim_config,
2080         .configure_filter = mac80211_hwsim_configure_filter,
2081         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2082         .sta_add = mac80211_hwsim_sta_add,
2083         .sta_remove = mac80211_hwsim_sta_remove,
2084         .sta_notify = mac80211_hwsim_sta_notify,
2085         .set_tim = mac80211_hwsim_set_tim,
2086         .conf_tx = mac80211_hwsim_conf_tx,
2087         .get_survey = mac80211_hwsim_get_survey,
2088         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2089         .ampdu_action = mac80211_hwsim_ampdu_action,
2090         .sw_scan_start = mac80211_hwsim_sw_scan,
2091         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2092         .flush = mac80211_hwsim_flush,
2093         .get_tsf = mac80211_hwsim_get_tsf,
2094         .set_tsf = mac80211_hwsim_set_tsf,
2095         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2096         .get_et_stats = mac80211_hwsim_get_et_stats,
2097         .get_et_strings = mac80211_hwsim_get_et_strings,
2098 };
2099
2100 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2101
2102 struct hwsim_new_radio_params {
2103         unsigned int channels;
2104         const char *reg_alpha2;
2105         const struct ieee80211_regdomain *regd;
2106         bool reg_strict;
2107         bool p2p_device;
2108         bool use_chanctx;
2109         bool destroy_on_close;
2110         const char *hwname;
2111         bool no_vif;
2112 };
2113
2114 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2115                                    struct genl_info *info)
2116 {
2117         if (info)
2118                 genl_notify(&hwsim_genl_family, mcast_skb,
2119                             genl_info_net(info), info->snd_portid,
2120                             HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
2121         else
2122                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2123                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2124 }
2125
2126 static struct sk_buff *build_radio_msg(int cmd, int id,
2127                                        struct hwsim_new_radio_params *param)
2128 {
2129         struct sk_buff *skb;
2130         void *data;
2131         int ret;
2132
2133         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2134         if (!skb)
2135                 return NULL;
2136
2137         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0, cmd);
2138         if (!data)
2139                 goto error;
2140
2141         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2142         if (ret < 0)
2143                 goto error;
2144
2145         if (param->channels) {
2146                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2147                 if (ret < 0)
2148                         goto error;
2149         }
2150
2151         if (param->reg_alpha2) {
2152                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2153                               param->reg_alpha2);
2154                 if (ret < 0)
2155                         goto error;
2156         }
2157
2158         if (param->regd) {
2159                 int i;
2160
2161                 for (i = 0; hwsim_world_regdom_custom[i] != param->regd &&
2162                      i < ARRAY_SIZE(hwsim_world_regdom_custom); i++)
2163                         ;
2164
2165                 if (i < ARRAY_SIZE(hwsim_world_regdom_custom)) {
2166                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2167                         if (ret < 0)
2168                                 goto error;
2169                 }
2170         }
2171
2172         if (param->reg_strict) {
2173                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2174                 if (ret < 0)
2175                         goto error;
2176         }
2177
2178         if (param->p2p_device) {
2179                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2180                 if (ret < 0)
2181                         goto error;
2182         }
2183
2184         if (param->use_chanctx) {
2185                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2186                 if (ret < 0)
2187                         goto error;
2188         }
2189
2190         if (param->hwname) {
2191                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2192                               strlen(param->hwname), param->hwname);
2193                 if (ret < 0)
2194                         goto error;
2195         }
2196
2197         genlmsg_end(skb, data);
2198
2199         return skb;
2200
2201 error:
2202         nlmsg_free(skb);
2203         return NULL;
2204 }
2205
2206 static void hswim_mcast_new_radio(int id, struct genl_info *info,
2207                                   struct hwsim_new_radio_params *param)
2208 {
2209         struct sk_buff *mcast_skb;
2210
2211         mcast_skb = build_radio_msg(HWSIM_CMD_NEW_RADIO, id, param);
2212         if (!mcast_skb)
2213                 return;
2214
2215         hwsim_mcast_config_msg(mcast_skb, info);
2216 }
2217
2218 static int mac80211_hwsim_new_radio(struct genl_info *info,
2219                                     struct hwsim_new_radio_params *param)
2220 {
2221         int err;
2222         u8 addr[ETH_ALEN];
2223         struct mac80211_hwsim_data *data;
2224         struct ieee80211_hw *hw;
2225         enum ieee80211_band band;
2226         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2227         int idx;
2228
2229         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2230                 return -EINVAL;
2231
2232         spin_lock_bh(&hwsim_radio_lock);
2233         idx = hwsim_radio_idx++;
2234         spin_unlock_bh(&hwsim_radio_lock);
2235
2236         if (param->use_chanctx)
2237                 ops = &mac80211_hwsim_mchan_ops;
2238         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2239         if (!hw) {
2240                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2241                 err = -ENOMEM;
2242                 goto failed;
2243         }
2244         data = hw->priv;
2245         data->hw = hw;
2246
2247         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2248         if (IS_ERR(data->dev)) {
2249                 printk(KERN_DEBUG
2250                        "mac80211_hwsim: device_create failed (%ld)\n",
2251                        PTR_ERR(data->dev));
2252                 err = -ENOMEM;
2253                 goto failed_drvdata;
2254         }
2255         data->dev->driver = &mac80211_hwsim_driver.driver;
2256         err = device_bind_driver(data->dev);
2257         if (err != 0) {
2258                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2259                        err);
2260                 goto failed_hw;
2261         }
2262
2263         skb_queue_head_init(&data->pending);
2264
2265         SET_IEEE80211_DEV(hw, data->dev);
2266         memset(addr, 0, ETH_ALEN);
2267         addr[0] = 0x02;
2268         addr[3] = idx >> 8;
2269         addr[4] = idx;
2270         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2271         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2272         data->addresses[1].addr[0] |= 0x40;
2273         hw->wiphy->n_addresses = 2;
2274         hw->wiphy->addresses = data->addresses;
2275
2276         data->channels = param->channels;
2277         data->use_chanctx = param->use_chanctx;
2278         data->idx = idx;
2279         data->destroy_on_close = param->destroy_on_close;
2280         if (info)
2281                 data->portid = info->snd_portid;
2282
2283         if (data->use_chanctx) {
2284                 hw->wiphy->max_scan_ssids = 255;
2285                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2286                 hw->wiphy->max_remain_on_channel_duration = 1000;
2287                 /* For channels > 1 DFS is not allowed */
2288                 hw->wiphy->n_iface_combinations = 1;
2289                 hw->wiphy->iface_combinations = &data->if_combination;
2290                 if (param->p2p_device)
2291                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2292                 else
2293                         data->if_combination = hwsim_if_comb[0];
2294                 data->if_combination.num_different_channels = data->channels;
2295         } else if (param->p2p_device) {
2296                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2297                 hw->wiphy->n_iface_combinations =
2298                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2299         } else {
2300                 hw->wiphy->iface_combinations = hwsim_if_comb;
2301                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2302         }
2303
2304         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2305         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2306
2307         hw->queues = 5;
2308         hw->offchannel_tx_hw_queue = 4;
2309         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2310                                      BIT(NL80211_IFTYPE_AP) |
2311                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2312                                      BIT(NL80211_IFTYPE_P2P_GO) |
2313                                      BIT(NL80211_IFTYPE_ADHOC) |
2314                                      BIT(NL80211_IFTYPE_MESH_POINT);
2315
2316         if (param->p2p_device)
2317                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2318
2319         hw->flags = IEEE80211_HW_MFP_CAPABLE |
2320                     IEEE80211_HW_SIGNAL_DBM |
2321                     IEEE80211_HW_AMPDU_AGGREGATION |
2322                     IEEE80211_HW_WANT_MONITOR_VIF |
2323                     IEEE80211_HW_QUEUE_CONTROL |
2324                     IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2325                     IEEE80211_HW_CHANCTX_STA_CSA;
2326         if (rctbl)
2327                 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2328
2329         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2330                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2331                             WIPHY_FLAG_AP_UAPSD |
2332                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2333         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2334                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2335                                NL80211_FEATURE_STATIC_SMPS |
2336                                NL80211_FEATURE_DYNAMIC_SMPS |
2337                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2338
2339         /* ask mac80211 to reserve space for magic */
2340         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2341         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2342         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2343
2344         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2345                 sizeof(hwsim_channels_2ghz));
2346         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2347                 sizeof(hwsim_channels_5ghz));
2348         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2349
2350         for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2351                 struct ieee80211_supported_band *sband = &data->bands[band];
2352                 switch (band) {
2353                 case IEEE80211_BAND_2GHZ:
2354                         sband->channels = data->channels_2ghz;
2355                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2356                         sband->bitrates = data->rates;
2357                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2358                         break;
2359                 case IEEE80211_BAND_5GHZ:
2360                         sband->channels = data->channels_5ghz;
2361                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2362                         sband->bitrates = data->rates + 4;
2363                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2364                         break;
2365                 default:
2366                         continue;
2367                 }
2368
2369                 sband->ht_cap.ht_supported = true;
2370                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2371                                     IEEE80211_HT_CAP_GRN_FLD |
2372                                     IEEE80211_HT_CAP_SGI_20 |
2373                                     IEEE80211_HT_CAP_SGI_40 |
2374                                     IEEE80211_HT_CAP_DSSSCCK40;
2375                 sband->ht_cap.ampdu_factor = 0x3;
2376                 sband->ht_cap.ampdu_density = 0x6;
2377                 memset(&sband->ht_cap.mcs, 0,
2378                        sizeof(sband->ht_cap.mcs));
2379                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2380                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2381                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2382
2383                 hw->wiphy->bands[band] = sband;
2384
2385                 sband->vht_cap.vht_supported = true;
2386                 sband->vht_cap.cap =
2387                         IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2388                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2389                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2390                         IEEE80211_VHT_CAP_RXLDPC |
2391                         IEEE80211_VHT_CAP_SHORT_GI_80 |
2392                         IEEE80211_VHT_CAP_SHORT_GI_160 |
2393                         IEEE80211_VHT_CAP_TXSTBC |
2394                         IEEE80211_VHT_CAP_RXSTBC_1 |
2395                         IEEE80211_VHT_CAP_RXSTBC_2 |
2396                         IEEE80211_VHT_CAP_RXSTBC_3 |
2397                         IEEE80211_VHT_CAP_RXSTBC_4 |
2398                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2399                 sband->vht_cap.vht_mcs.rx_mcs_map =
2400                         cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2401                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2402                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2403                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2404                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2405                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2406                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2407                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2408                 sband->vht_cap.vht_mcs.tx_mcs_map =
2409                         sband->vht_cap.vht_mcs.rx_mcs_map;
2410         }
2411
2412         /* By default all radios belong to the first group */
2413         data->group = 1;
2414         mutex_init(&data->mutex);
2415
2416         /* Enable frame retransmissions for lossy channels */
2417         hw->max_rates = 4;
2418         hw->max_rate_tries = 11;
2419
2420         if (param->reg_strict)
2421                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2422         if (param->regd) {
2423                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2424                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2425                 /* give the regulatory workqueue a chance to run */
2426                 schedule_timeout_interruptible(1);
2427         }
2428
2429         if (param->no_vif)
2430                 hw->flags |= IEEE80211_HW_NO_AUTO_VIF;
2431
2432         err = ieee80211_register_hw(hw);
2433         if (err < 0) {
2434                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2435                        err);
2436                 goto failed_hw;
2437         }
2438
2439         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2440
2441         if (param->reg_alpha2)
2442                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2443
2444         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2445         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2446         debugfs_create_file("group", 0666, data->debugfs, data,
2447                             &hwsim_fops_group);
2448         if (!data->use_chanctx)
2449                 debugfs_create_file("dfs_simulate_radar", 0222,
2450                                     data->debugfs,
2451                                     data, &hwsim_simulate_radar);
2452
2453         tasklet_hrtimer_init(&data->beacon_timer,
2454                              mac80211_hwsim_beacon,
2455                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2456
2457         spin_lock_bh(&hwsim_radio_lock);
2458         list_add_tail(&data->list, &hwsim_radios);
2459         spin_unlock_bh(&hwsim_radio_lock);
2460
2461         if (idx > 0)
2462                 hswim_mcast_new_radio(idx, info, param);
2463
2464         return idx;
2465
2466 failed_hw:
2467         device_unregister(data->dev);
2468 failed_drvdata:
2469         ieee80211_free_hw(hw);
2470 failed:
2471         return err;
2472 }
2473
2474 static void hwsim_mcast_del_radio(int id, const char *hwname,
2475                                   struct genl_info *info)
2476 {
2477         struct sk_buff *skb;
2478         void *data;
2479         int ret;
2480
2481         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2482         if (!skb)
2483                 return;
2484
2485         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2486                            HWSIM_CMD_DEL_RADIO);
2487         if (!data)
2488                 goto error;
2489
2490         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2491         if (ret < 0)
2492                 goto error;
2493
2494         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2495                       hwname);
2496         if (ret < 0)
2497                 goto error;
2498
2499         genlmsg_end(skb, data);
2500
2501         hwsim_mcast_config_msg(skb, info);
2502
2503         return;
2504
2505 error:
2506         nlmsg_free(skb);
2507 }
2508
2509 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2510                                      const char *hwname,
2511                                      struct genl_info *info)
2512 {
2513         hwsim_mcast_del_radio(data->idx, hwname, info);
2514         debugfs_remove_recursive(data->debugfs);
2515         ieee80211_unregister_hw(data->hw);
2516         device_release_driver(data->dev);
2517         device_unregister(data->dev);
2518         ieee80211_free_hw(data->hw);
2519 }
2520
2521 static void mac80211_hwsim_free(void)
2522 {
2523         struct mac80211_hwsim_data *data;
2524
2525         spin_lock_bh(&hwsim_radio_lock);
2526         while ((data = list_first_entry_or_null(&hwsim_radios,
2527                                                 struct mac80211_hwsim_data,
2528                                                 list))) {
2529                 list_del(&data->list);
2530                 spin_unlock_bh(&hwsim_radio_lock);
2531                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2532                                          NULL);
2533                 spin_lock_bh(&hwsim_radio_lock);
2534         }
2535         spin_unlock_bh(&hwsim_radio_lock);
2536         class_destroy(hwsim_class);
2537 }
2538
2539 static const struct net_device_ops hwsim_netdev_ops = {
2540         .ndo_start_xmit         = hwsim_mon_xmit,
2541         .ndo_change_mtu         = eth_change_mtu,
2542         .ndo_set_mac_address    = eth_mac_addr,
2543         .ndo_validate_addr      = eth_validate_addr,
2544 };
2545
2546 static void hwsim_mon_setup(struct net_device *dev)
2547 {
2548         dev->netdev_ops = &hwsim_netdev_ops;
2549         dev->destructor = free_netdev;
2550         ether_setup(dev);
2551         dev->tx_queue_len = 0;
2552         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2553         memset(dev->dev_addr, 0, ETH_ALEN);
2554         dev->dev_addr[0] = 0x12;
2555 }
2556
2557 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2558 {
2559         struct mac80211_hwsim_data *data;
2560         bool _found = false;
2561
2562         spin_lock_bh(&hwsim_radio_lock);
2563         list_for_each_entry(data, &hwsim_radios, list) {
2564                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2565                         _found = true;
2566                         break;
2567                 }
2568         }
2569         spin_unlock_bh(&hwsim_radio_lock);
2570
2571         if (!_found)
2572                 return NULL;
2573
2574         return data;
2575 }
2576
2577 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2578                                            struct genl_info *info)
2579 {
2580
2581         struct ieee80211_hdr *hdr;
2582         struct mac80211_hwsim_data *data2;
2583         struct ieee80211_tx_info *txi;
2584         struct hwsim_tx_rate *tx_attempts;
2585         unsigned long ret_skb_ptr;
2586         struct sk_buff *skb, *tmp;
2587         const u8 *src;
2588         unsigned int hwsim_flags;
2589         int i;
2590         bool found = false;
2591
2592         if (info->snd_portid != wmediumd_portid)
2593                 return -EINVAL;
2594
2595         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2596             !info->attrs[HWSIM_ATTR_FLAGS] ||
2597             !info->attrs[HWSIM_ATTR_COOKIE] ||
2598             !info->attrs[HWSIM_ATTR_TX_INFO])
2599                 goto out;
2600
2601         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2602         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2603         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2604
2605         data2 = get_hwsim_data_ref_from_addr(src);
2606         if (!data2)
2607                 goto out;
2608
2609         /* look for the skb matching the cookie passed back from user */
2610         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2611                 if ((unsigned long)skb == ret_skb_ptr) {
2612                         skb_unlink(skb, &data2->pending);
2613                         found = true;
2614                         break;
2615                 }
2616         }
2617
2618         /* not found */
2619         if (!found)
2620                 goto out;
2621
2622         /* Tx info received because the frame was broadcasted on user space,
2623          so we get all the necessary info: tx attempts and skb control buff */
2624
2625         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2626                        info->attrs[HWSIM_ATTR_TX_INFO]);
2627
2628         /* now send back TX status */
2629         txi = IEEE80211_SKB_CB(skb);
2630
2631         ieee80211_tx_info_clear_status(txi);
2632
2633         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2634                 txi->status.rates[i].idx = tx_attempts[i].idx;
2635                 txi->status.rates[i].count = tx_attempts[i].count;
2636                 /*txi->status.rates[i].flags = 0;*/
2637         }
2638
2639         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2640
2641         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2642            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2643                 if (skb->len >= 16) {
2644                         hdr = (struct ieee80211_hdr *) skb->data;
2645                         mac80211_hwsim_monitor_ack(data2->channel,
2646                                                    hdr->addr2);
2647                 }
2648                 txi->flags |= IEEE80211_TX_STAT_ACK;
2649         }
2650         ieee80211_tx_status_irqsafe(data2->hw, skb);
2651         return 0;
2652 out:
2653         return -EINVAL;
2654
2655 }
2656
2657 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2658                                           struct genl_info *info)
2659 {
2660         struct mac80211_hwsim_data *data2;
2661         struct ieee80211_rx_status rx_status;
2662         const u8 *dst;
2663         int frame_data_len;
2664         void *frame_data;
2665         struct sk_buff *skb = NULL;
2666
2667         if (info->snd_portid != wmediumd_portid)
2668                 return -EINVAL;
2669
2670         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2671             !info->attrs[HWSIM_ATTR_FRAME] ||
2672             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2673             !info->attrs[HWSIM_ATTR_SIGNAL])
2674                 goto out;
2675
2676         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2677         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2678         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2679
2680         /* Allocate new skb here */
2681         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2682         if (skb == NULL)
2683                 goto err;
2684
2685         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2686                 goto err;
2687
2688         /* Copy the data */
2689         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2690
2691         data2 = get_hwsim_data_ref_from_addr(dst);
2692         if (!data2)
2693                 goto out;
2694
2695         /* check if radio is configured properly */
2696
2697         if (data2->idle || !data2->started)
2698                 goto out;
2699
2700         /* A frame is received from user space */
2701         memset(&rx_status, 0, sizeof(rx_status));
2702         /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2703          * packets?
2704          */
2705         rx_status.freq = data2->channel->center_freq;
2706         rx_status.band = data2->channel->band;
2707         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2708         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2709
2710         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2711         data2->rx_pkts++;
2712         data2->rx_bytes += skb->len;
2713         ieee80211_rx_irqsafe(data2->hw, skb);
2714
2715         return 0;
2716 err:
2717         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2718 out:
2719         dev_kfree_skb(skb);
2720         return -EINVAL;
2721 }
2722
2723 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2724                                       struct genl_info *info)
2725 {
2726         struct mac80211_hwsim_data *data;
2727         int chans = 1;
2728
2729         spin_lock_bh(&hwsim_radio_lock);
2730         list_for_each_entry(data, &hwsim_radios, list)
2731                 chans = max(chans, data->channels);
2732         spin_unlock_bh(&hwsim_radio_lock);
2733
2734         /* In the future we should revise the userspace API and allow it
2735          * to set a flag that it does support multi-channel, then we can
2736          * let this pass conditionally on the flag.
2737          * For current userspace, prohibit it since it won't work right.
2738          */
2739         if (chans > 1)
2740                 return -EOPNOTSUPP;
2741
2742         if (wmediumd_portid)
2743                 return -EBUSY;
2744
2745         wmediumd_portid = info->snd_portid;
2746
2747         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2748                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2749
2750         return 0;
2751 }
2752
2753 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2754 {
2755         struct hwsim_new_radio_params param = { 0 };
2756
2757         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2758         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2759         param.channels = channels;
2760         param.destroy_on_close =
2761                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2762
2763         if (info->attrs[HWSIM_ATTR_CHANNELS])
2764                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2765
2766         if (info->attrs[HWSIM_ATTR_NO_VIF])
2767                 param.no_vif = true;
2768
2769         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2770                 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2771
2772         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2773                 param.use_chanctx = true;
2774         else
2775                 param.use_chanctx = (param.channels > 1);
2776
2777         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2778                 param.reg_alpha2 =
2779                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2780
2781         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2782                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2783
2784                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2785                         return -EINVAL;
2786                 param.regd = hwsim_world_regdom_custom[idx];
2787         }
2788
2789         return mac80211_hwsim_new_radio(info, &param);
2790 }
2791
2792 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2793 {
2794         struct mac80211_hwsim_data *data;
2795         s64 idx = -1;
2796         const char *hwname = NULL;
2797
2798         if (info->attrs[HWSIM_ATTR_RADIO_ID])
2799                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2800         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2801                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2802         else
2803                 return -EINVAL;
2804
2805         spin_lock_bh(&hwsim_radio_lock);
2806         list_for_each_entry(data, &hwsim_radios, list) {
2807                 if (idx >= 0) {
2808                         if (data->idx != idx)
2809                                 continue;
2810                 } else {
2811                         if (hwname &&
2812                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
2813                                 continue;
2814                 }
2815
2816                 list_del(&data->list);
2817                 spin_unlock_bh(&hwsim_radio_lock);
2818                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2819                                          info);
2820                 return 0;
2821         }
2822         spin_unlock_bh(&hwsim_radio_lock);
2823
2824         return -ENODEV;
2825 }
2826
2827 /* Generic Netlink operations array */
2828 static const struct genl_ops hwsim_ops[] = {
2829         {
2830                 .cmd = HWSIM_CMD_REGISTER,
2831                 .policy = hwsim_genl_policy,
2832                 .doit = hwsim_register_received_nl,
2833                 .flags = GENL_ADMIN_PERM,
2834         },
2835         {
2836                 .cmd = HWSIM_CMD_FRAME,
2837                 .policy = hwsim_genl_policy,
2838                 .doit = hwsim_cloned_frame_received_nl,
2839         },
2840         {
2841                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2842                 .policy = hwsim_genl_policy,
2843                 .doit = hwsim_tx_info_frame_received_nl,
2844         },
2845         {
2846                 .cmd = HWSIM_CMD_NEW_RADIO,
2847                 .policy = hwsim_genl_policy,
2848                 .doit = hwsim_new_radio_nl,
2849                 .flags = GENL_ADMIN_PERM,
2850         },
2851         {
2852                 .cmd = HWSIM_CMD_DEL_RADIO,
2853                 .policy = hwsim_genl_policy,
2854                 .doit = hwsim_del_radio_nl,
2855                 .flags = GENL_ADMIN_PERM,
2856         },
2857 };
2858
2859 static void destroy_radio(struct work_struct *work)
2860 {
2861         struct mac80211_hwsim_data *data =
2862                 container_of(work, struct mac80211_hwsim_data, destroy_work);
2863
2864         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
2865 }
2866
2867 static void remove_user_radios(u32 portid)
2868 {
2869         struct mac80211_hwsim_data *entry, *tmp;
2870
2871         spin_lock_bh(&hwsim_radio_lock);
2872         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
2873                 if (entry->destroy_on_close && entry->portid == portid) {
2874                         list_del(&entry->list);
2875                         INIT_WORK(&entry->destroy_work, destroy_radio);
2876                         schedule_work(&entry->destroy_work);
2877                 }
2878         }
2879         spin_unlock_bh(&hwsim_radio_lock);
2880 }
2881
2882 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2883                                          unsigned long state,
2884                                          void *_notify)
2885 {
2886         struct netlink_notify *notify = _notify;
2887
2888         if (state != NETLINK_URELEASE)
2889                 return NOTIFY_DONE;
2890
2891         remove_user_radios(notify->portid);
2892
2893         if (notify->portid == wmediumd_portid) {
2894                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2895                        " socket, switching to perfect channel medium\n");
2896                 wmediumd_portid = 0;
2897         }
2898         return NOTIFY_DONE;
2899
2900 }
2901
2902 static struct notifier_block hwsim_netlink_notifier = {
2903         .notifier_call = mac80211_hwsim_netlink_notify,
2904 };
2905
2906 static int hwsim_init_netlink(void)
2907 {
2908         int rc;
2909
2910         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2911
2912         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
2913                                                   hwsim_ops,
2914                                                   hwsim_mcgrps);
2915         if (rc)
2916                 goto failure;
2917
2918         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2919         if (rc)
2920                 goto failure;
2921
2922         return 0;
2923
2924 failure:
2925         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2926         return -EINVAL;
2927 }
2928
2929 static void hwsim_exit_netlink(void)
2930 {
2931         /* unregister the notifier */
2932         netlink_unregister_notifier(&hwsim_netlink_notifier);
2933         /* unregister the family */
2934         genl_unregister_family(&hwsim_genl_family);
2935 }
2936
2937 static int __init init_mac80211_hwsim(void)
2938 {
2939         int i, err;
2940
2941         if (radios < 0 || radios > 100)
2942                 return -EINVAL;
2943
2944         if (channels < 1)
2945                 return -EINVAL;
2946
2947         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
2948         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
2949         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
2950         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
2951         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
2952         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
2953         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
2954         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
2955         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
2956         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
2957         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
2958                 mac80211_hwsim_assign_vif_chanctx;
2959         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
2960                 mac80211_hwsim_unassign_vif_chanctx;
2961
2962         spin_lock_init(&hwsim_radio_lock);
2963         INIT_LIST_HEAD(&hwsim_radios);
2964
2965         err = platform_driver_register(&mac80211_hwsim_driver);
2966         if (err)
2967                 return err;
2968
2969         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2970         if (IS_ERR(hwsim_class)) {
2971                 err = PTR_ERR(hwsim_class);
2972                 goto out_unregister_driver;
2973         }
2974
2975         err = hwsim_init_netlink();
2976         if (err < 0)
2977                 goto out_unregister_driver;
2978
2979         for (i = 0; i < radios; i++) {
2980                 struct hwsim_new_radio_params param = { 0 };
2981
2982                 param.channels = channels;
2983
2984                 switch (regtest) {
2985                 case HWSIM_REGTEST_DIFF_COUNTRY:
2986                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2987                                 param.reg_alpha2 = hwsim_alpha2s[i];
2988                         break;
2989                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2990                         if (!i)
2991                                 param.reg_alpha2 = hwsim_alpha2s[0];
2992                         break;
2993                 case HWSIM_REGTEST_STRICT_ALL:
2994                         param.reg_strict = true;
2995                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2996                         param.reg_alpha2 = hwsim_alpha2s[0];
2997                         break;
2998                 case HWSIM_REGTEST_WORLD_ROAM:
2999                         if (i == 0)
3000                                 param.regd = &hwsim_world_regdom_custom_01;
3001                         break;
3002                 case HWSIM_REGTEST_CUSTOM_WORLD:
3003                         param.regd = &hwsim_world_regdom_custom_01;
3004                         break;
3005                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3006                         if (i == 0)
3007                                 param.regd = &hwsim_world_regdom_custom_01;
3008                         else if (i == 1)
3009                                 param.regd = &hwsim_world_regdom_custom_02;
3010                         break;
3011                 case HWSIM_REGTEST_STRICT_FOLLOW:
3012                         if (i == 0) {
3013                                 param.reg_strict = true;
3014                                 param.reg_alpha2 = hwsim_alpha2s[0];
3015                         }
3016                         break;
3017                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3018                         if (i == 0) {
3019                                 param.reg_strict = true;
3020                                 param.reg_alpha2 = hwsim_alpha2s[0];
3021                         } else if (i == 1) {
3022                                 param.reg_alpha2 = hwsim_alpha2s[1];
3023                         }
3024                         break;
3025                 case HWSIM_REGTEST_ALL:
3026                         switch (i) {
3027                         case 0:
3028                                 param.regd = &hwsim_world_regdom_custom_01;
3029                                 break;
3030                         case 1:
3031                                 param.regd = &hwsim_world_regdom_custom_02;
3032                                 break;
3033                         case 2:
3034                                 param.reg_alpha2 = hwsim_alpha2s[0];
3035                                 break;
3036                         case 3:
3037                                 param.reg_alpha2 = hwsim_alpha2s[1];
3038                                 break;
3039                         case 4:
3040                                 param.reg_strict = true;
3041                                 param.reg_alpha2 = hwsim_alpha2s[2];
3042                                 break;
3043                         }
3044                         break;
3045                 default:
3046                         break;
3047                 }
3048
3049                 param.p2p_device = support_p2p_device;
3050                 param.use_chanctx = channels > 1;
3051
3052                 err = mac80211_hwsim_new_radio(NULL, &param);
3053                 if (err < 0)
3054                         goto out_free_radios;
3055         }
3056
3057         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3058                                  hwsim_mon_setup);
3059         if (hwsim_mon == NULL) {
3060                 err = -ENOMEM;
3061                 goto out_free_radios;
3062         }
3063
3064         rtnl_lock();
3065         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3066         if (err < 0) {
3067                 rtnl_unlock();
3068                 goto out_free_radios;
3069         }
3070
3071         err = register_netdevice(hwsim_mon);
3072         if (err < 0) {
3073                 rtnl_unlock();
3074                 goto out_free_mon;
3075         }
3076         rtnl_unlock();
3077
3078         return 0;
3079
3080 out_free_mon:
3081         free_netdev(hwsim_mon);
3082 out_free_radios:
3083         mac80211_hwsim_free();
3084 out_unregister_driver:
3085         platform_driver_unregister(&mac80211_hwsim_driver);
3086         return err;
3087 }
3088 module_init(init_mac80211_hwsim);
3089
3090 static void __exit exit_mac80211_hwsim(void)
3091 {
3092         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3093
3094         hwsim_exit_netlink();
3095
3096         mac80211_hwsim_free();
3097         unregister_netdev(hwsim_mon);
3098         platform_driver_unregister(&mac80211_hwsim_driver);
3099 }
3100 module_exit(exit_mac80211_hwsim);