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