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 void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
 988 {
 989         /*
 990          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
 991          * e.g. like this:
 992          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
 993          * (but you should use a valid OUI, not that)
 994          *
 995          * If anyone wants to 'donate' a radiotap OUI/subns code
 996          * please send a patch removing this #ifdef and changing
 997          * the values accordingly.
 998          */
 999 #ifdef HWSIM_RADIOTAP_OUI
1000         struct ieee80211_vendor_radiotap *rtap;
1001
1002         /*
1003          * Note that this code requires the headroom in the SKB
1004          * that was allocated earlier.
1005          */
1006         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1007         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1008         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1009         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1010         rtap->subns = 127;
1011
1012         /*
1013          * Radiotap vendor namespaces can (and should) also be
1014          * split into fields by using the standard radiotap
1015          * presence bitmap mechanism. Use just BIT(0) here for
1016          * the presence bitmap.
1017          */
1018         rtap->present = BIT(0);
1019         /* We have 8 bytes of (dummy) data */
1020         rtap->len = 8;
1021         /* For testing, also require it to be aligned */
1022         rtap->align = 8;
1023         /* And also test that padding works, 4 bytes */
1024         rtap->pad = 4;
1025         /* push the data */
1026         memcpy(rtap->data, "ABCDEFGH", 8);
1027         /* make sure to clear padding, mac80211 doesn't */
1028         memset(rtap->data + 8, 0, 4);
1029
1030         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1031 #endif
1032 }
1033
1034 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1035                                           struct sk_buff *skb,
1036                                           struct ieee80211_channel *chan)
1037 {
1038         struct mac80211_hwsim_data *data = hw->priv, *data2;
1039         bool ack = false;
1040         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1041         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1042         struct ieee80211_rx_status rx_status;
1043         u64 now;
1044
1045         memset(&rx_status, 0, sizeof(rx_status));
1046         rx_status.flag |= RX_FLAG_MACTIME_START;
1047         rx_status.freq = chan->center_freq;
1048         rx_status.band = chan->band;
1049         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1050                 rx_status.rate_idx =
1051                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1052                 rx_status.vht_nss =
1053                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1054                 rx_status.flag |= RX_FLAG_VHT;
1055         } else {
1056                 rx_status.rate_idx = info->control.rates[0].idx;
1057                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1058                         rx_status.flag |= RX_FLAG_HT;
1059         }
1060         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1061                 rx_status.flag |= RX_FLAG_40MHZ;
1062         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1063                 rx_status.flag |= RX_FLAG_SHORT_GI;
1064         /* TODO: simulate real signal strength (and optional packet loss) */
1065         rx_status.signal = data->power_level - 50;
1066
1067         if (data->ps != PS_DISABLED)
1068                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1069
1070         /* release the skb's source info */
1071         skb_orphan(skb);
1072         skb_dst_drop(skb);
1073         skb->mark = 0;
1074         secpath_reset(skb);
1075         nf_reset(skb);
1076
1077         /*
1078          * Get absolute mactime here so all HWs RX at the "same time", and
1079          * absolute TX time for beacon mactime so the timestamp matches.
1080          * Giving beacons a different mactime than non-beacons looks messy, but
1081          * it helps the Toffset be exact and a ~10us mactime discrepancy
1082          * probably doesn't really matter.
1083          */
1084         if (ieee80211_is_beacon(hdr->frame_control) ||
1085             ieee80211_is_probe_resp(hdr->frame_control))
1086                 now = data->abs_bcn_ts;
1087         else
1088                 now = mac80211_hwsim_get_tsf_raw();
1089
1090         /* Copy skb to all enabled radios that are on the current frequency */
1091         spin_lock(&hwsim_radio_lock);
1092         list_for_each_entry(data2, &hwsim_radios, list) {
1093                 struct sk_buff *nskb;
1094                 struct tx_iter_data tx_iter_data = {
1095                         .receive = false,
1096                         .channel = chan,
1097                 };
1098
1099                 if (data == data2)
1100                         continue;
1101
1102                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1103                     !hwsim_ps_rx_ok(data2, skb))
1104                         continue;
1105
1106                 if (!(data->group & data2->group))
1107                         continue;
1108
1109                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1110                     !hwsim_chans_compat(chan, data2->channel)) {
1111                         ieee80211_iterate_active_interfaces_atomic(
1112                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1113                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1114                         if (!tx_iter_data.receive)
1115                                 continue;
1116                 }
1117
1118                 /*
1119                  * reserve some space for our vendor and the normal
1120                  * radiotap header, since we're copying anyway
1121                  */
1122                 if (skb->len < PAGE_SIZE && paged_rx) {
1123                         struct page *page = alloc_page(GFP_ATOMIC);
1124
1125                         if (!page)
1126                                 continue;
1127
1128                         nskb = dev_alloc_skb(128);
1129                         if (!nskb) {
1130                                 __free_page(page);
1131                                 continue;
1132                         }
1133
1134                         memcpy(page_address(page), skb->data, skb->len);
1135                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1136                 } else {
1137                         nskb = skb_copy(skb, GFP_ATOMIC);
1138                         if (!nskb)
1139                                 continue;
1140                 }
1141
1142                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1143                         ack = true;
1144
1145                 rx_status.mactime = now + data2->tsf_offset;
1146
1147                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1148
1149                 mac80211_hwsim_add_vendor_rtap(nskb);
1150
1151                 data2->rx_pkts++;
1152                 data2->rx_bytes += nskb->len;
1153                 ieee80211_rx_irqsafe(data2->hw, nskb);
1154         }
1155         spin_unlock(&hwsim_radio_lock);
1156
1157         return ack;
1158 }
1159
1160 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1161                               struct ieee80211_tx_control *control,
1162                               struct sk_buff *skb)
1163 {
1164         struct mac80211_hwsim_data *data = hw->priv;
1165         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1166         struct ieee80211_chanctx_conf *chanctx_conf;
1167         struct ieee80211_channel *channel;
1168         bool ack;
1169         u32 _portid;
1170
1171         if (WARN_ON(skb->len < 10)) {
1172                 /* Should not happen; just a sanity check for addr1 use */
1173                 ieee80211_free_txskb(hw, skb);
1174                 return;
1175         }
1176
1177         if (!data->use_chanctx) {
1178                 channel = data->channel;
1179         } else if (txi->hw_queue == 4) {
1180                 channel = data->tmp_chan;
1181         } else {
1182                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1183                 if (chanctx_conf)
1184                         channel = chanctx_conf->def.chan;
1185                 else
1186                         channel = NULL;
1187         }
1188
1189         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1190                 ieee80211_free_txskb(hw, skb);
1191                 return;
1192         }
1193
1194         if (data->idle && !data->tmp_chan) {
1195                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1196                 ieee80211_free_txskb(hw, skb);
1197                 return;
1198         }
1199
1200         if (txi->control.vif)
1201                 hwsim_check_magic(txi->control.vif);
1202         if (control->sta)
1203                 hwsim_check_sta_magic(control->sta);
1204
1205         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1206                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1207                                        txi->control.rates,
1208                                        ARRAY_SIZE(txi->control.rates));
1209
1210         txi->rate_driver_data[0] = channel;
1211         mac80211_hwsim_monitor_rx(hw, skb, channel);
1212
1213         /* wmediumd mode check */
1214         _portid = ACCESS_ONCE(wmediumd_portid);
1215
1216         if (_portid)
1217                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1218
1219         /* NO wmediumd detected, perfect medium simulation */
1220         data->tx_pkts++;
1221         data->tx_bytes += skb->len;
1222         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1223
1224         if (ack && skb->len >= 16) {
1225                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1226                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1227         }
1228
1229         ieee80211_tx_info_clear_status(txi);
1230
1231         /* frame was transmitted at most favorable rate at first attempt */
1232         txi->control.rates[0].count = 1;
1233         txi->control.rates[1].idx = -1;
1234
1235         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1236                 txi->flags |= IEEE80211_TX_STAT_ACK;
1237         ieee80211_tx_status_irqsafe(hw, skb);
1238 }
1239
1240
1241 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1242 {
1243         struct mac80211_hwsim_data *data = hw->priv;
1244         wiphy_debug(hw->wiphy, "%s\n", __func__);
1245         data->started = true;
1246         return 0;
1247 }
1248
1249
1250 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1251 {
1252         struct mac80211_hwsim_data *data = hw->priv;
1253         data->started = false;
1254         tasklet_hrtimer_cancel(&data->beacon_timer);
1255         wiphy_debug(hw->wiphy, "%s\n", __func__);
1256 }
1257
1258
1259 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1260                                         struct ieee80211_vif *vif)
1261 {
1262         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1263                     __func__, ieee80211_vif_type_p2p(vif),
1264                     vif->addr);
1265         hwsim_set_magic(vif);
1266
1267         vif->cab_queue = 0;
1268         vif->hw_queue[IEEE80211_AC_VO] = 0;
1269         vif->hw_queue[IEEE80211_AC_VI] = 1;
1270         vif->hw_queue[IEEE80211_AC_BE] = 2;
1271         vif->hw_queue[IEEE80211_AC_BK] = 3;
1272
1273         return 0;
1274 }
1275
1276
1277 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1278                                            struct ieee80211_vif *vif,
1279                                            enum nl80211_iftype newtype,
1280                                            bool newp2p)
1281 {
1282         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1283         wiphy_debug(hw->wiphy,
1284                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1285                     __func__, ieee80211_vif_type_p2p(vif),
1286                     newtype, vif->addr);
1287         hwsim_check_magic(vif);
1288
1289         /*
1290          * interface may change from non-AP to AP in
1291          * which case this needs to be set up again
1292          */
1293         vif->cab_queue = 0;
1294
1295         return 0;
1296 }
1297
1298 static void mac80211_hwsim_remove_interface(
1299         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1300 {
1301         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1302                     __func__, ieee80211_vif_type_p2p(vif),
1303                     vif->addr);
1304         hwsim_check_magic(vif);
1305         hwsim_clear_magic(vif);
1306 }
1307
1308 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1309                                     struct sk_buff *skb,
1310                                     struct ieee80211_channel *chan)
1311 {
1312         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1313
1314         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1315                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1316                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1317                                        txi->control.rates,
1318                                        ARRAY_SIZE(txi->control.rates));
1319         }
1320
1321         mac80211_hwsim_monitor_rx(hw, skb, chan);
1322
1323         if (_pid)
1324                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1325
1326         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1327         dev_kfree_skb(skb);
1328 }
1329
1330 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1331                                      struct ieee80211_vif *vif)
1332 {
1333         struct mac80211_hwsim_data *data = arg;
1334         struct ieee80211_hw *hw = data->hw;
1335         struct ieee80211_tx_info *info;
1336         struct ieee80211_rate *txrate;
1337         struct ieee80211_mgmt *mgmt;
1338         struct sk_buff *skb;
1339
1340         hwsim_check_magic(vif);
1341
1342         if (vif->type != NL80211_IFTYPE_AP &&
1343             vif->type != NL80211_IFTYPE_MESH_POINT &&
1344             vif->type != NL80211_IFTYPE_ADHOC)
1345                 return;
1346
1347         skb = ieee80211_beacon_get(hw, vif);
1348         if (skb == NULL)
1349                 return;
1350         info = IEEE80211_SKB_CB(skb);
1351         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1352                 ieee80211_get_tx_rates(vif, NULL, skb,
1353                                        info->control.rates,
1354                                        ARRAY_SIZE(info->control.rates));
1355
1356         txrate = ieee80211_get_tx_rate(hw, info);
1357
1358         mgmt = (struct ieee80211_mgmt *) skb->data;
1359         /* fake header transmission time */
1360         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1361         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1362                                                data->tsf_offset +
1363                                                24 * 8 * 10 / txrate->bitrate);
1364
1365         mac80211_hwsim_tx_frame(hw, skb,
1366                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1367
1368         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1369                 ieee80211_csa_finish(vif);
1370 }
1371
1372 static enum hrtimer_restart
1373 mac80211_hwsim_beacon(struct hrtimer *timer)
1374 {
1375         struct mac80211_hwsim_data *data =
1376                 container_of(timer, struct mac80211_hwsim_data,
1377                              beacon_timer.timer);
1378         struct ieee80211_hw *hw = data->hw;
1379         u64 bcn_int = data->beacon_int;
1380         ktime_t next_bcn;
1381
1382         if (!data->started)
1383                 goto out;
1384
1385         ieee80211_iterate_active_interfaces_atomic(
1386                 hw, IEEE80211_IFACE_ITER_NORMAL,
1387                 mac80211_hwsim_beacon_tx, data);
1388
1389         /* beacon at new TBTT + beacon interval */
1390         if (data->bcn_delta) {
1391                 bcn_int -= data->bcn_delta;
1392                 data->bcn_delta = 0;
1393         }
1394
1395         next_bcn = ktime_add(hrtimer_get_expires(timer),
1396                              ns_to_ktime(bcn_int * 1000));
1397         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1398 out:
1399         return HRTIMER_NORESTART;
1400 }
1401
1402 static const char * const hwsim_chanwidths[] = {
1403         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1404         [NL80211_CHAN_WIDTH_20] = "ht20",
1405         [NL80211_CHAN_WIDTH_40] = "ht40",
1406         [NL80211_CHAN_WIDTH_80] = "vht80",
1407         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1408         [NL80211_CHAN_WIDTH_160] = "vht160",
1409 };
1410
1411 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1412 {
1413         struct mac80211_hwsim_data *data = hw->priv;
1414         struct ieee80211_conf *conf = &hw->conf;
1415         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1416                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1417                 [IEEE80211_SMPS_OFF] = "off",
1418                 [IEEE80211_SMPS_STATIC] = "static",
1419                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1420         };
1421
1422         if (conf->chandef.chan)
1423                 wiphy_debug(hw->wiphy,
1424                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1425                             __func__,
1426                             conf->chandef.chan->center_freq,
1427                             conf->chandef.center_freq1,
1428                             conf->chandef.center_freq2,
1429                             hwsim_chanwidths[conf->chandef.width],
1430                             !!(conf->flags & IEEE80211_CONF_IDLE),
1431                             !!(conf->flags & IEEE80211_CONF_PS),
1432                             smps_modes[conf->smps_mode]);
1433         else
1434                 wiphy_debug(hw->wiphy,
1435                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1436                             __func__,
1437                             !!(conf->flags & IEEE80211_CONF_IDLE),
1438                             !!(conf->flags & IEEE80211_CONF_PS),
1439                             smps_modes[conf->smps_mode]);
1440
1441         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1442
1443         data->channel = conf->chandef.chan;
1444
1445         WARN_ON(data->channel && data->use_chanctx);
1446
1447         data->power_level = conf->power_level;
1448         if (!data->started || !data->beacon_int)
1449                 tasklet_hrtimer_cancel(&data->beacon_timer);
1450         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1451                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1452                 u32 bcn_int = data->beacon_int;
1453                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1454
1455                 tasklet_hrtimer_start(&data->beacon_timer,
1456                                       ns_to_ktime(until_tbtt * 1000),
1457                                       HRTIMER_MODE_REL);
1458         }
1459
1460         return 0;
1461 }
1462
1463
1464 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1465                                             unsigned int changed_flags,
1466                                             unsigned int *total_flags,u64 multicast)
1467 {
1468         struct mac80211_hwsim_data *data = hw->priv;
1469
1470         wiphy_debug(hw->wiphy, "%s\n", __func__);
1471
1472         data->rx_filter = 0;
1473         if (*total_flags & FIF_PROMISC_IN_BSS)
1474                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1475         if (*total_flags & FIF_ALLMULTI)
1476                 data->rx_filter |= FIF_ALLMULTI;
1477
1478         *total_flags = data->rx_filter;
1479 }
1480
1481 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1482                                        struct ieee80211_vif *vif)
1483 {
1484         unsigned int *count = data;
1485         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1486
1487         if (vp->bcn_en)
1488                 (*count)++;
1489 }
1490
1491 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1492                                             struct ieee80211_vif *vif,
1493                                             struct ieee80211_bss_conf *info,
1494                                             u32 changed)
1495 {
1496         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1497         struct mac80211_hwsim_data *data = hw->priv;
1498
1499         hwsim_check_magic(vif);
1500
1501         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1502                     __func__, changed, vif->addr);
1503
1504         if (changed & BSS_CHANGED_BSSID) {
1505                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1506                             __func__, info->bssid);
1507                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1508         }
1509
1510         if (changed & BSS_CHANGED_ASSOC) {
1511                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1512                             info->assoc, info->aid);
1513                 vp->assoc = info->assoc;
1514                 vp->aid = info->aid;
1515         }
1516
1517         if (changed & BSS_CHANGED_BEACON_INT) {
1518                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1519                 data->beacon_int = info->beacon_int * 1024;
1520         }
1521
1522         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1523                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1524                 vp->bcn_en = info->enable_beacon;
1525                 if (data->started &&
1526                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1527                     info->enable_beacon) {
1528                         u64 tsf, until_tbtt;
1529                         u32 bcn_int;
1530                         if (WARN_ON(!data->beacon_int))
1531                                 data->beacon_int = 1000 * 1024;
1532                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1533                         bcn_int = data->beacon_int;
1534                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1535                         tasklet_hrtimer_start(&data->beacon_timer,
1536                                               ns_to_ktime(until_tbtt * 1000),
1537                                               HRTIMER_MODE_REL);
1538                 } else if (!info->enable_beacon) {
1539                         unsigned int count = 0;
1540                         ieee80211_iterate_active_interfaces_atomic(
1541                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1542                                 mac80211_hwsim_bcn_en_iter, &count);
1543                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1544                                     count);
1545                         if (count == 0)
1546                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1547                 }
1548         }
1549
1550         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1551                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1552                             info->use_cts_prot);
1553         }
1554
1555         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1556                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1557                             info->use_short_preamble);
1558         }
1559
1560         if (changed & BSS_CHANGED_ERP_SLOT) {
1561                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1562         }
1563
1564         if (changed & BSS_CHANGED_HT) {
1565                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1566                             info->ht_operation_mode);
1567         }
1568
1569         if (changed & BSS_CHANGED_BASIC_RATES) {
1570                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1571                             (unsigned long long) info->basic_rates);
1572         }
1573
1574         if (changed & BSS_CHANGED_TXPOWER)
1575                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1576 }
1577
1578 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1579                                   struct ieee80211_vif *vif,
1580                                   struct ieee80211_sta *sta)
1581 {
1582         hwsim_check_magic(vif);
1583         hwsim_set_sta_magic(sta);
1584
1585         return 0;
1586 }
1587
1588 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1589                                      struct ieee80211_vif *vif,
1590                                      struct ieee80211_sta *sta)
1591 {
1592         hwsim_check_magic(vif);
1593         hwsim_clear_sta_magic(sta);
1594
1595         return 0;
1596 }
1597
1598 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1599                                       struct ieee80211_vif *vif,
1600                                       enum sta_notify_cmd cmd,
1601                                       struct ieee80211_sta *sta)
1602 {
1603         hwsim_check_magic(vif);
1604
1605         switch (cmd) {
1606         case STA_NOTIFY_SLEEP:
1607         case STA_NOTIFY_AWAKE:
1608                 /* TODO: make good use of these flags */
1609                 break;
1610         default:
1611                 WARN(1, "Invalid sta notify: %d\n", cmd);
1612                 break;
1613         }
1614 }
1615
1616 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1617                                   struct ieee80211_sta *sta,
1618                                   bool set)
1619 {
1620         hwsim_check_sta_magic(sta);
1621         return 0;
1622 }
1623
1624 static int mac80211_hwsim_conf_tx(
1625         struct ieee80211_hw *hw,
1626         struct ieee80211_vif *vif, u16 queue,
1627         const struct ieee80211_tx_queue_params *params)
1628 {
1629         wiphy_debug(hw->wiphy,
1630                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1631                     __func__, queue,
1632                     params->txop, params->cw_min,
1633                     params->cw_max, params->aifs);
1634         return 0;
1635 }
1636
1637 static int mac80211_hwsim_get_survey(
1638         struct ieee80211_hw *hw, int idx,
1639         struct survey_info *survey)
1640 {
1641         struct ieee80211_conf *conf = &hw->conf;
1642
1643         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1644
1645         if (idx != 0)
1646                 return -ENOENT;
1647
1648         /* Current channel */
1649         survey->channel = conf->chandef.chan;
1650
1651         /*
1652          * Magically conjured noise level --- this is only ok for simulated hardware.
1653          *
1654          * A real driver which cannot determine the real channel noise MUST NOT
1655          * report any noise, especially not a magically conjured one :-)
1656          */
1657         survey->filled = SURVEY_INFO_NOISE_DBM;
1658         survey->noise = -92;
1659
1660         return 0;
1661 }
1662
1663 #ifdef CONFIG_NL80211_TESTMODE
1664 /*
1665  * This section contains example code for using netlink
1666  * attributes with the testmode command in nl80211.
1667  */
1668
1669 /* These enums need to be kept in sync with userspace */
1670 enum hwsim_testmode_attr {
1671         __HWSIM_TM_ATTR_INVALID = 0,
1672         HWSIM_TM_ATTR_CMD       = 1,
1673         HWSIM_TM_ATTR_PS        = 2,
1674
1675         /* keep last */
1676         __HWSIM_TM_ATTR_AFTER_LAST,
1677         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1678 };
1679
1680 enum hwsim_testmode_cmd {
1681         HWSIM_TM_CMD_SET_PS             = 0,
1682         HWSIM_TM_CMD_GET_PS             = 1,
1683         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1684         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1685 };
1686
1687 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1688         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1689         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1690 };
1691
1692 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1693                                        struct ieee80211_vif *vif,
1694                                        void *data, int len)
1695 {
1696         struct mac80211_hwsim_data *hwsim = hw->priv;
1697         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1698         struct sk_buff *skb;
1699         int err, ps;
1700
1701         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1702                         hwsim_testmode_policy);
1703         if (err)
1704                 return err;
1705
1706         if (!tb[HWSIM_TM_ATTR_CMD])
1707                 return -EINVAL;
1708
1709         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1710         case HWSIM_TM_CMD_SET_PS:
1711                 if (!tb[HWSIM_TM_ATTR_PS])
1712                         return -EINVAL;
1713                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1714                 return hwsim_fops_ps_write(hwsim, ps);
1715         case HWSIM_TM_CMD_GET_PS:
1716                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1717                                                 nla_total_size(sizeof(u32)));
1718                 if (!skb)
1719                         return -ENOMEM;
1720                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1721                         goto nla_put_failure;
1722                 return cfg80211_testmode_reply(skb);
1723         case HWSIM_TM_CMD_STOP_QUEUES:
1724                 ieee80211_stop_queues(hw);
1725                 return 0;
1726         case HWSIM_TM_CMD_WAKE_QUEUES:
1727                 ieee80211_wake_queues(hw);
1728                 return 0;
1729         default:
1730                 return -EOPNOTSUPP;
1731         }
1732
1733  nla_put_failure:
1734         kfree_skb(skb);
1735         return -ENOBUFS;
1736 }
1737 #endif
1738
1739 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1740                                        struct ieee80211_vif *vif,
1741                                        enum ieee80211_ampdu_mlme_action action,
1742                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1743                                        u8 buf_size)
1744 {
1745         switch (action) {
1746         case IEEE80211_AMPDU_TX_START:
1747                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1748                 break;
1749         case IEEE80211_AMPDU_TX_STOP_CONT:
1750         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1751         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1752                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1753                 break;
1754         case IEEE80211_AMPDU_TX_OPERATIONAL:
1755                 break;
1756         case IEEE80211_AMPDU_RX_START:
1757         case IEEE80211_AMPDU_RX_STOP:
1758                 break;
1759         default:
1760                 return -EOPNOTSUPP;
1761         }
1762
1763         return 0;
1764 }
1765
1766 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1767                                  struct ieee80211_vif *vif,
1768                                  u32 queues, bool drop)
1769 {
1770         /* Not implemented, queues only on kernel side */
1771 }
1772
1773 static void hw_scan_work(struct work_struct *work)
1774 {
1775         struct mac80211_hwsim_data *hwsim =
1776                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1777         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1778         int dwell, i;
1779
1780         mutex_lock(&hwsim->mutex);
1781         if (hwsim->scan_chan_idx >= req->n_channels) {
1782                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1783                 ieee80211_scan_completed(hwsim->hw, false);
1784                 hwsim->hw_scan_request = NULL;
1785                 hwsim->hw_scan_vif = NULL;
1786                 hwsim->tmp_chan = NULL;
1787                 mutex_unlock(&hwsim->mutex);
1788                 return;
1789         }
1790
1791         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1792                     req->channels[hwsim->scan_chan_idx]->center_freq);
1793
1794         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1795         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1796             !req->n_ssids) {
1797                 dwell = 120;
1798         } else {
1799                 dwell = 30;
1800                 /* send probes */
1801                 for (i = 0; i < req->n_ssids; i++) {
1802                         struct sk_buff *probe;
1803
1804                         probe = ieee80211_probereq_get(hwsim->hw,
1805                                                        hwsim->hw_scan_vif,
1806                                                        req->ssids[i].ssid,
1807                                                        req->ssids[i].ssid_len,
1808                                                        req->ie_len);
1809                         if (!probe)
1810                                 continue;
1811
1812                         if (req->ie_len)
1813                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1814                                        req->ie_len);
1815
1816                         local_bh_disable();
1817                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1818                                                 hwsim->tmp_chan);
1819                         local_bh_enable();
1820                 }
1821         }
1822         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1823                                      msecs_to_jiffies(dwell));
1824         hwsim->scan_chan_idx++;
1825         mutex_unlock(&hwsim->mutex);
1826 }
1827
1828 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1829                                   struct ieee80211_vif *vif,
1830                                   struct ieee80211_scan_request *hw_req)
1831 {
1832         struct mac80211_hwsim_data *hwsim = hw->priv;
1833         struct cfg80211_scan_request *req = &hw_req->req;
1834
1835         mutex_lock(&hwsim->mutex);
1836         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1837                 mutex_unlock(&hwsim->mutex);
1838                 return -EBUSY;
1839         }
1840         hwsim->hw_scan_request = req;
1841         hwsim->hw_scan_vif = vif;
1842         hwsim->scan_chan_idx = 0;
1843         mutex_unlock(&hwsim->mutex);
1844
1845         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1846
1847         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1848
1849         return 0;
1850 }
1851
1852 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1853                                           struct ieee80211_vif *vif)
1854 {
1855         struct mac80211_hwsim_data *hwsim = hw->priv;
1856
1857         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1858
1859         cancel_delayed_work_sync(&hwsim->hw_scan);
1860
1861         mutex_lock(&hwsim->mutex);
1862         ieee80211_scan_completed(hwsim->hw, true);
1863         hwsim->tmp_chan = NULL;
1864         hwsim->hw_scan_request = NULL;
1865         hwsim->hw_scan_vif = NULL;
1866         mutex_unlock(&hwsim->mutex);
1867 }
1868
1869 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1870 {
1871         struct mac80211_hwsim_data *hwsim = hw->priv;
1872
1873         mutex_lock(&hwsim->mutex);
1874
1875         if (hwsim->scanning) {
1876                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1877                 goto out;
1878         }
1879
1880         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1881         hwsim->scanning = true;
1882
1883 out:
1884         mutex_unlock(&hwsim->mutex);
1885 }
1886
1887 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1888 {
1889         struct mac80211_hwsim_data *hwsim = hw->priv;
1890
1891         mutex_lock(&hwsim->mutex);
1892
1893         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1894         hwsim->scanning = false;
1895
1896         mutex_unlock(&hwsim->mutex);
1897 }
1898
1899 static void hw_roc_done(struct work_struct *work)
1900 {
1901         struct mac80211_hwsim_data *hwsim =
1902                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1903
1904         mutex_lock(&hwsim->mutex);
1905         ieee80211_remain_on_channel_expired(hwsim->hw);
1906         hwsim->tmp_chan = NULL;
1907         mutex_unlock(&hwsim->mutex);
1908
1909         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1910 }
1911
1912 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1913                               struct ieee80211_vif *vif,
1914                               struct ieee80211_channel *chan,
1915                               int duration,
1916                               enum ieee80211_roc_type type)
1917 {
1918         struct mac80211_hwsim_data *hwsim = hw->priv;
1919
1920         mutex_lock(&hwsim->mutex);
1921         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1922                 mutex_unlock(&hwsim->mutex);
1923                 return -EBUSY;
1924         }
1925
1926         hwsim->tmp_chan = chan;
1927         mutex_unlock(&hwsim->mutex);
1928
1929         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1930                     chan->center_freq, duration);
1931
1932         ieee80211_ready_on_channel(hw);
1933
1934         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1935                                      msecs_to_jiffies(duration));
1936         return 0;
1937 }
1938
1939 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1940 {
1941         struct mac80211_hwsim_data *hwsim = hw->priv;
1942
1943         cancel_delayed_work_sync(&hwsim->roc_done);
1944
1945         mutex_lock(&hwsim->mutex);
1946         hwsim->tmp_chan = NULL;
1947         mutex_unlock(&hwsim->mutex);
1948
1949         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1950
1951         return 0;
1952 }
1953
1954 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1955                                       struct ieee80211_chanctx_conf *ctx)
1956 {
1957         hwsim_set_chanctx_magic(ctx);
1958         wiphy_debug(hw->wiphy,
1959                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1960                     ctx->def.chan->center_freq, ctx->def.width,
1961                     ctx->def.center_freq1, ctx->def.center_freq2);
1962         return 0;
1963 }
1964
1965 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1966                                           struct ieee80211_chanctx_conf *ctx)
1967 {
1968         wiphy_debug(hw->wiphy,
1969                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1970                     ctx->def.chan->center_freq, ctx->def.width,
1971                     ctx->def.center_freq1, ctx->def.center_freq2);
1972         hwsim_check_chanctx_magic(ctx);
1973         hwsim_clear_chanctx_magic(ctx);
1974 }
1975
1976 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1977                                           struct ieee80211_chanctx_conf *ctx,
1978                                           u32 changed)
1979 {
1980         hwsim_check_chanctx_magic(ctx);
1981         wiphy_debug(hw->wiphy,
1982                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1983                     ctx->def.chan->center_freq, ctx->def.width,
1984                     ctx->def.center_freq1, ctx->def.center_freq2);
1985 }
1986
1987 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1988                                              struct ieee80211_vif *vif,
1989                                              struct ieee80211_chanctx_conf *ctx)
1990 {
1991         hwsim_check_magic(vif);
1992         hwsim_check_chanctx_magic(ctx);
1993
1994         return 0;
1995 }
1996
1997 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1998                                                 struct ieee80211_vif *vif,
1999                                                 struct ieee80211_chanctx_conf *ctx)
2000 {
2001         hwsim_check_magic(vif);
2002         hwsim_check_chanctx_magic(ctx);
2003 }
2004
2005 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2006         "tx_pkts_nic",
2007         "tx_bytes_nic",
2008         "rx_pkts_nic",
2009         "rx_bytes_nic",
2010         "d_tx_dropped",
2011         "d_tx_failed",
2012         "d_ps_mode",
2013         "d_group",
2014         "d_tx_power",
2015 };
2016
2017 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2018
2019 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2020                                           struct ieee80211_vif *vif,
2021                                           u32 sset, u8 *data)
2022 {
2023         if (sset == ETH_SS_STATS)
2024                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2025                        sizeof(mac80211_hwsim_gstrings_stats));
2026 }
2027
2028 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2029                                             struct ieee80211_vif *vif, int sset)
2030 {
2031         if (sset == ETH_SS_STATS)
2032                 return MAC80211_HWSIM_SSTATS_LEN;
2033         return 0;
2034 }
2035
2036 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2037                                         struct ieee80211_vif *vif,
2038                                         struct ethtool_stats *stats, u64 *data)
2039 {
2040         struct mac80211_hwsim_data *ar = hw->priv;
2041         int i = 0;
2042
2043         data[i++] = ar->tx_pkts;
2044         data[i++] = ar->tx_bytes;
2045         data[i++] = ar->rx_pkts;
2046         data[i++] = ar->rx_bytes;
2047         data[i++] = ar->tx_dropped;
2048         data[i++] = ar->tx_failed;
2049         data[i++] = ar->ps;
2050         data[i++] = ar->group;
2051         data[i++] = ar->power_level;
2052
2053         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2054 }
2055
2056 static const struct ieee80211_ops mac80211_hwsim_ops = {
2057         .tx = mac80211_hwsim_tx,
2058         .start = mac80211_hwsim_start,
2059         .stop = mac80211_hwsim_stop,
2060         .add_interface = mac80211_hwsim_add_interface,
2061         .change_interface = mac80211_hwsim_change_interface,
2062         .remove_interface = mac80211_hwsim_remove_interface,
2063         .config = mac80211_hwsim_config,
2064         .configure_filter = mac80211_hwsim_configure_filter,
2065         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2066         .sta_add = mac80211_hwsim_sta_add,
2067         .sta_remove = mac80211_hwsim_sta_remove,
2068         .sta_notify = mac80211_hwsim_sta_notify,
2069         .set_tim = mac80211_hwsim_set_tim,
2070         .conf_tx = mac80211_hwsim_conf_tx,
2071         .get_survey = mac80211_hwsim_get_survey,
2072         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2073         .ampdu_action = mac80211_hwsim_ampdu_action,
2074         .sw_scan_start = mac80211_hwsim_sw_scan,
2075         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2076         .flush = mac80211_hwsim_flush,
2077         .get_tsf = mac80211_hwsim_get_tsf,
2078         .set_tsf = mac80211_hwsim_set_tsf,
2079         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2080         .get_et_stats = mac80211_hwsim_get_et_stats,
2081         .get_et_strings = mac80211_hwsim_get_et_strings,
2082 };
2083
2084 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2085
2086 struct hwsim_new_radio_params {
2087         unsigned int channels;
2088         const char *reg_alpha2;
2089         const struct ieee80211_regdomain *regd;
2090         bool reg_strict;
2091         bool p2p_device;
2092         bool use_chanctx;
2093         bool destroy_on_close;
2094         const char *hwname;
2095         bool no_vif;
2096 };
2097
2098 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2099                                    struct genl_info *info)
2100 {
2101         if (info)
2102                 genl_notify(&hwsim_genl_family, mcast_skb,
2103                             genl_info_net(info), info->snd_portid,
2104                             HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
2105         else
2106                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2107                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2108 }
2109
2110 static struct sk_buff *build_radio_msg(int cmd, int id,
2111                                        struct hwsim_new_radio_params *param)
2112 {
2113         struct sk_buff *skb;
2114         void *data;
2115         int ret;
2116
2117         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2118         if (!skb)
2119                 return NULL;
2120
2121         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0, cmd);
2122         if (!data)
2123                 goto error;
2124
2125         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2126         if (ret < 0)
2127                 goto error;
2128
2129         if (param->channels) {
2130                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2131                 if (ret < 0)
2132                         goto error;
2133         }
2134
2135         if (param->reg_alpha2) {
2136                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2137                               param->reg_alpha2);
2138                 if (ret < 0)
2139                         goto error;
2140         }
2141
2142         if (param->regd) {
2143                 int i;
2144
2145                 for (i = 0; hwsim_world_regdom_custom[i] != param->regd &&
2146                      i < ARRAY_SIZE(hwsim_world_regdom_custom); i++)
2147                         ;
2148
2149                 if (i < ARRAY_SIZE(hwsim_world_regdom_custom)) {
2150                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2151                         if (ret < 0)
2152                                 goto error;
2153                 }
2154         }
2155
2156         if (param->reg_strict) {
2157                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2158                 if (ret < 0)
2159                         goto error;
2160         }
2161
2162         if (param->p2p_device) {
2163                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2164                 if (ret < 0)
2165                         goto error;
2166         }
2167
2168         if (param->use_chanctx) {
2169                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2170                 if (ret < 0)
2171                         goto error;
2172         }
2173
2174         if (param->hwname) {
2175                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2176                               strlen(param->hwname), param->hwname);
2177                 if (ret < 0)
2178                         goto error;
2179         }
2180
2181         genlmsg_end(skb, data);
2182
2183         return skb;
2184
2185 error:
2186         nlmsg_free(skb);
2187         return NULL;
2188 }
2189
2190 static void hswim_mcast_new_radio(int id, struct genl_info *info,
2191                                   struct hwsim_new_radio_params *param)
2192 {
2193         struct sk_buff *mcast_skb;
2194
2195         mcast_skb = build_radio_msg(HWSIM_CMD_NEW_RADIO, id, param);
2196         if (!mcast_skb)
2197                 return;
2198
2199         hwsim_mcast_config_msg(mcast_skb, info);
2200 }
2201
2202 static int mac80211_hwsim_new_radio(struct genl_info *info,
2203                                     struct hwsim_new_radio_params *param)
2204 {
2205         int err;
2206         u8 addr[ETH_ALEN];
2207         struct mac80211_hwsim_data *data;
2208         struct ieee80211_hw *hw;
2209         enum ieee80211_band band;
2210         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2211         int idx;
2212
2213         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2214                 return -EINVAL;
2215
2216         spin_lock_bh(&hwsim_radio_lock);
2217         idx = hwsim_radio_idx++;
2218         spin_unlock_bh(&hwsim_radio_lock);
2219
2220         if (param->use_chanctx)
2221                 ops = &mac80211_hwsim_mchan_ops;
2222         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2223         if (!hw) {
2224                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2225                 err = -ENOMEM;
2226                 goto failed;
2227         }
2228         data = hw->priv;
2229         data->hw = hw;
2230
2231         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2232         if (IS_ERR(data->dev)) {
2233                 printk(KERN_DEBUG
2234                        "mac80211_hwsim: device_create failed (%ld)\n",
2235                        PTR_ERR(data->dev));
2236                 err = -ENOMEM;
2237                 goto failed_drvdata;
2238         }
2239         data->dev->driver = &mac80211_hwsim_driver.driver;
2240         err = device_bind_driver(data->dev);
2241         if (err != 0) {
2242                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2243                        err);
2244                 goto failed_hw;
2245         }
2246
2247         skb_queue_head_init(&data->pending);
2248
2249         SET_IEEE80211_DEV(hw, data->dev);
2250         memset(addr, 0, ETH_ALEN);
2251         addr[0] = 0x02;
2252         addr[3] = idx >> 8;
2253         addr[4] = idx;
2254         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2255         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2256         data->addresses[1].addr[0] |= 0x40;
2257         hw->wiphy->n_addresses = 2;
2258         hw->wiphy->addresses = data->addresses;
2259
2260         data->channels = param->channels;
2261         data->use_chanctx = param->use_chanctx;
2262         data->idx = idx;
2263         data->destroy_on_close = param->destroy_on_close;
2264         if (info)
2265                 data->portid = info->snd_portid;
2266
2267         if (data->use_chanctx) {
2268                 hw->wiphy->max_scan_ssids = 255;
2269                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2270                 hw->wiphy->max_remain_on_channel_duration = 1000;
2271                 /* For channels > 1 DFS is not allowed */
2272                 hw->wiphy->n_iface_combinations = 1;
2273                 hw->wiphy->iface_combinations = &data->if_combination;
2274                 if (param->p2p_device)
2275                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2276                 else
2277                         data->if_combination = hwsim_if_comb[0];
2278                 data->if_combination.num_different_channels = data->channels;
2279         } else if (param->p2p_device) {
2280                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2281                 hw->wiphy->n_iface_combinations =
2282                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2283         } else {
2284                 hw->wiphy->iface_combinations = hwsim_if_comb;
2285                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2286         }
2287
2288         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2289         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2290
2291         hw->queues = 5;
2292         hw->offchannel_tx_hw_queue = 4;
2293         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2294                                      BIT(NL80211_IFTYPE_AP) |
2295                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2296                                      BIT(NL80211_IFTYPE_P2P_GO) |
2297                                      BIT(NL80211_IFTYPE_ADHOC) |
2298                                      BIT(NL80211_IFTYPE_MESH_POINT);
2299
2300         if (param->p2p_device)
2301                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2302
2303         hw->flags = IEEE80211_HW_MFP_CAPABLE |
2304                     IEEE80211_HW_SIGNAL_DBM |
2305                     IEEE80211_HW_AMPDU_AGGREGATION |
2306                     IEEE80211_HW_WANT_MONITOR_VIF |
2307                     IEEE80211_HW_QUEUE_CONTROL |
2308                     IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2309                     IEEE80211_HW_CHANCTX_STA_CSA;
2310         if (rctbl)
2311                 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2312
2313         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2314                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2315                             WIPHY_FLAG_AP_UAPSD |
2316                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2317         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2318                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2319                                NL80211_FEATURE_STATIC_SMPS |
2320                                NL80211_FEATURE_DYNAMIC_SMPS;
2321
2322         /* ask mac80211 to reserve space for magic */
2323         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2324         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2325         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2326
2327         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2328                 sizeof(hwsim_channels_2ghz));
2329         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2330                 sizeof(hwsim_channels_5ghz));
2331         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2332
2333         for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2334                 struct ieee80211_supported_band *sband = &data->bands[band];
2335                 switch (band) {
2336                 case IEEE80211_BAND_2GHZ:
2337                         sband->channels = data->channels_2ghz;
2338                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2339                         sband->bitrates = data->rates;
2340                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2341                         break;
2342                 case IEEE80211_BAND_5GHZ:
2343                         sband->channels = data->channels_5ghz;
2344                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2345                         sband->bitrates = data->rates + 4;
2346                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2347                         break;
2348                 default:
2349                         continue;
2350                 }
2351
2352                 sband->ht_cap.ht_supported = true;
2353                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2354                                     IEEE80211_HT_CAP_GRN_FLD |
2355                                     IEEE80211_HT_CAP_SGI_20 |
2356                                     IEEE80211_HT_CAP_SGI_40 |
2357                                     IEEE80211_HT_CAP_DSSSCCK40;
2358                 sband->ht_cap.ampdu_factor = 0x3;
2359                 sband->ht_cap.ampdu_density = 0x6;
2360                 memset(&sband->ht_cap.mcs, 0,
2361                        sizeof(sband->ht_cap.mcs));
2362                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2363                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2364                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2365
2366                 hw->wiphy->bands[band] = sband;
2367
2368                 sband->vht_cap.vht_supported = true;
2369                 sband->vht_cap.cap =
2370                         IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2371                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2372                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2373                         IEEE80211_VHT_CAP_RXLDPC |
2374                         IEEE80211_VHT_CAP_SHORT_GI_80 |
2375                         IEEE80211_VHT_CAP_SHORT_GI_160 |
2376                         IEEE80211_VHT_CAP_TXSTBC |
2377                         IEEE80211_VHT_CAP_RXSTBC_1 |
2378                         IEEE80211_VHT_CAP_RXSTBC_2 |
2379                         IEEE80211_VHT_CAP_RXSTBC_3 |
2380                         IEEE80211_VHT_CAP_RXSTBC_4 |
2381                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2382                 sband->vht_cap.vht_mcs.rx_mcs_map =
2383                         cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2384                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2385                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2386                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2387                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2388                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2389                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2390                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2391                 sband->vht_cap.vht_mcs.tx_mcs_map =
2392                         sband->vht_cap.vht_mcs.rx_mcs_map;
2393         }
2394
2395         /* By default all radios belong to the first group */
2396         data->group = 1;
2397         mutex_init(&data->mutex);
2398
2399         /* Enable frame retransmissions for lossy channels */
2400         hw->max_rates = 4;
2401         hw->max_rate_tries = 11;
2402
2403         if (param->reg_strict)
2404                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2405         if (param->regd) {
2406                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2407                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2408                 /* give the regulatory workqueue a chance to run */
2409                 schedule_timeout_interruptible(1);
2410         }
2411
2412         if (param->no_vif)
2413                 hw->flags |= IEEE80211_HW_NO_AUTO_VIF;
2414
2415         err = ieee80211_register_hw(hw);
2416         if (err < 0) {
2417                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2418                        err);
2419                 goto failed_hw;
2420         }
2421
2422         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2423
2424         if (param->reg_alpha2)
2425                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2426
2427         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2428         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2429         debugfs_create_file("group", 0666, data->debugfs, data,
2430                             &hwsim_fops_group);
2431         if (!data->use_chanctx)
2432                 debugfs_create_file("dfs_simulate_radar", 0222,
2433                                     data->debugfs,
2434                                     data, &hwsim_simulate_radar);
2435
2436         tasklet_hrtimer_init(&data->beacon_timer,
2437                              mac80211_hwsim_beacon,
2438                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2439
2440         spin_lock_bh(&hwsim_radio_lock);
2441         list_add_tail(&data->list, &hwsim_radios);
2442         spin_unlock_bh(&hwsim_radio_lock);
2443
2444         if (idx > 0)
2445                 hswim_mcast_new_radio(idx, info, param);
2446
2447         return idx;
2448
2449 failed_hw:
2450         device_unregister(data->dev);
2451 failed_drvdata:
2452         ieee80211_free_hw(hw);
2453 failed:
2454         return err;
2455 }
2456
2457 static void hwsim_mcast_del_radio(int id, const char *hwname,
2458                                   struct genl_info *info)
2459 {
2460         struct sk_buff *skb;
2461         void *data;
2462         int ret;
2463
2464         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2465         if (!skb)
2466                 return;
2467
2468         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2469                            HWSIM_CMD_DEL_RADIO);
2470         if (!data)
2471                 goto error;
2472
2473         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2474         if (ret < 0)
2475                 goto error;
2476
2477         if (hwname) {
2478                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2479                               hwname);
2480                 if (ret < 0)
2481                         goto error;
2482         }
2483
2484         genlmsg_end(skb, data);
2485
2486         hwsim_mcast_config_msg(skb, info);
2487
2488         return;
2489
2490 error:
2491         nlmsg_free(skb);
2492 }
2493
2494 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2495                                      const char *hwname,
2496                                      struct genl_info *info)
2497 {
2498         hwsim_mcast_del_radio(data->idx, hwname, info);
2499         debugfs_remove_recursive(data->debugfs);
2500         ieee80211_unregister_hw(data->hw);
2501         device_release_driver(data->dev);
2502         device_unregister(data->dev);
2503         ieee80211_free_hw(data->hw);
2504 }
2505
2506 static void mac80211_hwsim_free(void)
2507 {
2508         struct mac80211_hwsim_data *data;
2509
2510         spin_lock_bh(&hwsim_radio_lock);
2511         while ((data = list_first_entry_or_null(&hwsim_radios,
2512                                                 struct mac80211_hwsim_data,
2513                                                 list))) {
2514                 list_del(&data->list);
2515                 spin_unlock_bh(&hwsim_radio_lock);
2516                 mac80211_hwsim_del_radio(data, NULL, NULL);
2517                 spin_lock_bh(&hwsim_radio_lock);
2518         }
2519         spin_unlock_bh(&hwsim_radio_lock);
2520         class_destroy(hwsim_class);
2521 }
2522
2523 static const struct net_device_ops hwsim_netdev_ops = {
2524         .ndo_start_xmit         = hwsim_mon_xmit,
2525         .ndo_change_mtu         = eth_change_mtu,
2526         .ndo_set_mac_address    = eth_mac_addr,
2527         .ndo_validate_addr      = eth_validate_addr,
2528 };
2529
2530 static void hwsim_mon_setup(struct net_device *dev)
2531 {
2532         dev->netdev_ops = &hwsim_netdev_ops;
2533         dev->destructor = free_netdev;
2534         ether_setup(dev);
2535         dev->tx_queue_len = 0;
2536         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2537         memset(dev->dev_addr, 0, ETH_ALEN);
2538         dev->dev_addr[0] = 0x12;
2539 }
2540
2541 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2542 {
2543         struct mac80211_hwsim_data *data;
2544         bool _found = false;
2545
2546         spin_lock_bh(&hwsim_radio_lock);
2547         list_for_each_entry(data, &hwsim_radios, list) {
2548                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2549                         _found = true;
2550                         break;
2551                 }
2552         }
2553         spin_unlock_bh(&hwsim_radio_lock);
2554
2555         if (!_found)
2556                 return NULL;
2557
2558         return data;
2559 }
2560
2561 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2562                                            struct genl_info *info)
2563 {
2564
2565         struct ieee80211_hdr *hdr;
2566         struct mac80211_hwsim_data *data2;
2567         struct ieee80211_tx_info *txi;
2568         struct hwsim_tx_rate *tx_attempts;
2569         unsigned long ret_skb_ptr;
2570         struct sk_buff *skb, *tmp;
2571         const u8 *src;
2572         unsigned int hwsim_flags;
2573         int i;
2574         bool found = false;
2575
2576         if (info->snd_portid != wmediumd_portid)
2577                 return -EINVAL;
2578
2579         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2580             !info->attrs[HWSIM_ATTR_FLAGS] ||
2581             !info->attrs[HWSIM_ATTR_COOKIE] ||
2582             !info->attrs[HWSIM_ATTR_TX_INFO])
2583                 goto out;
2584
2585         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2586         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2587         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2588
2589         data2 = get_hwsim_data_ref_from_addr(src);
2590         if (!data2)
2591                 goto out;
2592
2593         /* look for the skb matching the cookie passed back from user */
2594         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2595                 if ((unsigned long)skb == ret_skb_ptr) {
2596                         skb_unlink(skb, &data2->pending);
2597                         found = true;
2598                         break;
2599                 }
2600         }
2601
2602         /* not found */
2603         if (!found)
2604                 goto out;
2605
2606         /* Tx info received because the frame was broadcasted on user space,
2607          so we get all the necessary info: tx attempts and skb control buff */
2608
2609         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2610                        info->attrs[HWSIM_ATTR_TX_INFO]);
2611
2612         /* now send back TX status */
2613         txi = IEEE80211_SKB_CB(skb);
2614
2615         ieee80211_tx_info_clear_status(txi);
2616
2617         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2618                 txi->status.rates[i].idx = tx_attempts[i].idx;
2619                 txi->status.rates[i].count = tx_attempts[i].count;
2620                 /*txi->status.rates[i].flags = 0;*/
2621         }
2622
2623         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2624
2625         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2626            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2627                 if (skb->len >= 16) {
2628                         hdr = (struct ieee80211_hdr *) skb->data;
2629                         mac80211_hwsim_monitor_ack(data2->channel,
2630                                                    hdr->addr2);
2631                 }
2632                 txi->flags |= IEEE80211_TX_STAT_ACK;
2633         }
2634         ieee80211_tx_status_irqsafe(data2->hw, skb);
2635         return 0;
2636 out:
2637         return -EINVAL;
2638
2639 }
2640
2641 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2642                                           struct genl_info *info)
2643 {
2644         struct mac80211_hwsim_data *data2;
2645         struct ieee80211_rx_status rx_status;
2646         const u8 *dst;
2647         int frame_data_len;
2648         void *frame_data;
2649         struct sk_buff *skb = NULL;
2650
2651         if (info->snd_portid != wmediumd_portid)
2652                 return -EINVAL;
2653
2654         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2655             !info->attrs[HWSIM_ATTR_FRAME] ||
2656             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2657             !info->attrs[HWSIM_ATTR_SIGNAL])
2658                 goto out;
2659
2660         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2661         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2662         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2663
2664         /* Allocate new skb here */
2665         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2666         if (skb == NULL)
2667                 goto err;
2668
2669         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2670                 goto err;
2671
2672         /* Copy the data */
2673         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2674
2675         data2 = get_hwsim_data_ref_from_addr(dst);
2676         if (!data2)
2677                 goto out;
2678
2679         /* check if radio is configured properly */
2680
2681         if (data2->idle || !data2->started)
2682                 goto out;
2683
2684         /* A frame is received from user space */
2685         memset(&rx_status, 0, sizeof(rx_status));
2686         /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2687          * packets?
2688          */
2689         rx_status.freq = data2->channel->center_freq;
2690         rx_status.band = data2->channel->band;
2691         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2692         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2693
2694         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2695         data2->rx_pkts++;
2696         data2->rx_bytes += skb->len;
2697         ieee80211_rx_irqsafe(data2->hw, skb);
2698
2699         return 0;
2700 err:
2701         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2702 out:
2703         dev_kfree_skb(skb);
2704         return -EINVAL;
2705 }
2706
2707 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2708                                       struct genl_info *info)
2709 {
2710         struct mac80211_hwsim_data *data;
2711         int chans = 1;
2712
2713         spin_lock_bh(&hwsim_radio_lock);
2714         list_for_each_entry(data, &hwsim_radios, list)
2715                 chans = max(chans, data->channels);
2716         spin_unlock_bh(&hwsim_radio_lock);
2717
2718         /* In the future we should revise the userspace API and allow it
2719          * to set a flag that it does support multi-channel, then we can
2720          * let this pass conditionally on the flag.
2721          * For current userspace, prohibit it since it won't work right.
2722          */
2723         if (chans > 1)
2724                 return -EOPNOTSUPP;
2725
2726         if (wmediumd_portid)
2727                 return -EBUSY;
2728
2729         wmediumd_portid = info->snd_portid;
2730
2731         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2732                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2733
2734         return 0;
2735 }
2736
2737 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2738 {
2739         struct hwsim_new_radio_params param = { 0 };
2740
2741         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2742         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2743         param.channels = channels;
2744         param.destroy_on_close =
2745                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2746
2747         if (info->attrs[HWSIM_ATTR_CHANNELS])
2748                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2749
2750         if (info->attrs[HWSIM_ATTR_NO_VIF])
2751                 param.no_vif = true;
2752
2753         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2754                 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2755
2756         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2757                 param.use_chanctx = true;
2758         else
2759                 param.use_chanctx = (param.channels > 1);
2760
2761         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2762                 param.reg_alpha2 =
2763                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2764
2765         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2766                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2767
2768                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2769                         return -EINVAL;
2770                 param.regd = hwsim_world_regdom_custom[idx];
2771         }
2772
2773         return mac80211_hwsim_new_radio(info, &param);
2774 }
2775
2776 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2777 {
2778         struct mac80211_hwsim_data *data;
2779         s64 idx = -1;
2780         const char *hwname = NULL;
2781
2782         if (info->attrs[HWSIM_ATTR_RADIO_ID])
2783                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2784         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2785                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2786         else
2787                 return -EINVAL;
2788
2789         spin_lock_bh(&hwsim_radio_lock);
2790         list_for_each_entry(data, &hwsim_radios, list) {
2791                 if (idx >= 0) {
2792                         if (data->idx != idx)
2793                                 continue;
2794                 } else {
2795                         if (hwname &&
2796                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
2797                                 continue;
2798                 }
2799
2800                 list_del(&data->list);
2801                 spin_unlock_bh(&hwsim_radio_lock);
2802                 mac80211_hwsim_del_radio(data, hwname, info);
2803                 return 0;
2804         }
2805         spin_unlock_bh(&hwsim_radio_lock);
2806
2807         return -ENODEV;
2808 }
2809
2810 /* Generic Netlink operations array */
2811 static const struct genl_ops hwsim_ops[] = {
2812         {
2813                 .cmd = HWSIM_CMD_REGISTER,
2814                 .policy = hwsim_genl_policy,
2815                 .doit = hwsim_register_received_nl,
2816                 .flags = GENL_ADMIN_PERM,
2817         },
2818         {
2819                 .cmd = HWSIM_CMD_FRAME,
2820                 .policy = hwsim_genl_policy,
2821                 .doit = hwsim_cloned_frame_received_nl,
2822         },
2823         {
2824                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2825                 .policy = hwsim_genl_policy,
2826                 .doit = hwsim_tx_info_frame_received_nl,
2827         },
2828         {
2829                 .cmd = HWSIM_CMD_NEW_RADIO,
2830                 .policy = hwsim_genl_policy,
2831                 .doit = hwsim_new_radio_nl,
2832                 .flags = GENL_ADMIN_PERM,
2833         },
2834         {
2835                 .cmd = HWSIM_CMD_DEL_RADIO,
2836                 .policy = hwsim_genl_policy,
2837                 .doit = hwsim_del_radio_nl,
2838                 .flags = GENL_ADMIN_PERM,
2839         },
2840 };
2841
2842 static void destroy_radio(struct work_struct *work)
2843 {
2844         struct mac80211_hwsim_data *data =
2845                 container_of(work, struct mac80211_hwsim_data, destroy_work);
2846
2847         mac80211_hwsim_del_radio(data, NULL, NULL);
2848 }
2849
2850 static void remove_user_radios(u32 portid)
2851 {
2852         struct mac80211_hwsim_data *entry, *tmp;
2853
2854         spin_lock_bh(&hwsim_radio_lock);
2855         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
2856                 if (entry->destroy_on_close && entry->portid == portid) {
2857                         list_del(&entry->list);
2858                         INIT_WORK(&entry->destroy_work, destroy_radio);
2859                         schedule_work(&entry->destroy_work);
2860                 }
2861         }
2862         spin_unlock_bh(&hwsim_radio_lock);
2863 }
2864
2865 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2866                                          unsigned long state,
2867                                          void *_notify)
2868 {
2869         struct netlink_notify *notify = _notify;
2870
2871         if (state != NETLINK_URELEASE)
2872                 return NOTIFY_DONE;
2873
2874         remove_user_radios(notify->portid);
2875
2876         if (notify->portid == wmediumd_portid) {
2877                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2878                        " socket, switching to perfect channel medium\n");
2879                 wmediumd_portid = 0;
2880         }
2881         return NOTIFY_DONE;
2882
2883 }
2884
2885 static struct notifier_block hwsim_netlink_notifier = {
2886         .notifier_call = mac80211_hwsim_netlink_notify,
2887 };
2888
2889 static int hwsim_init_netlink(void)
2890 {
2891         int rc;
2892
2893         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2894
2895         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
2896                                                   hwsim_ops,
2897                                                   hwsim_mcgrps);
2898         if (rc)
2899                 goto failure;
2900
2901         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2902         if (rc)
2903                 goto failure;
2904
2905         return 0;
2906
2907 failure:
2908         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2909         return -EINVAL;
2910 }
2911
2912 static void hwsim_exit_netlink(void)
2913 {
2914         /* unregister the notifier */
2915         netlink_unregister_notifier(&hwsim_netlink_notifier);
2916         /* unregister the family */
2917         genl_unregister_family(&hwsim_genl_family);
2918 }
2919
2920 static int __init init_mac80211_hwsim(void)
2921 {
2922         int i, err;
2923
2924         if (radios < 0 || radios > 100)
2925                 return -EINVAL;
2926
2927         if (channels < 1)
2928                 return -EINVAL;
2929
2930         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
2931         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
2932         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
2933         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
2934         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
2935         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
2936         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
2937         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
2938         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
2939         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
2940         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
2941                 mac80211_hwsim_assign_vif_chanctx;
2942         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
2943                 mac80211_hwsim_unassign_vif_chanctx;
2944
2945         spin_lock_init(&hwsim_radio_lock);
2946         INIT_LIST_HEAD(&hwsim_radios);
2947
2948         err = platform_driver_register(&mac80211_hwsim_driver);
2949         if (err)
2950                 return err;
2951
2952         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2953         if (IS_ERR(hwsim_class)) {
2954                 err = PTR_ERR(hwsim_class);
2955                 goto out_unregister_driver;
2956         }
2957
2958         err = hwsim_init_netlink();
2959         if (err < 0)
2960                 goto out_unregister_driver;
2961
2962         for (i = 0; i < radios; i++) {
2963                 struct hwsim_new_radio_params param = { 0 };
2964
2965                 param.channels = channels;
2966
2967                 switch (regtest) {
2968                 case HWSIM_REGTEST_DIFF_COUNTRY:
2969                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2970                                 param.reg_alpha2 = hwsim_alpha2s[i];
2971                         break;
2972                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2973                         if (!i)
2974                                 param.reg_alpha2 = hwsim_alpha2s[0];
2975                         break;
2976                 case HWSIM_REGTEST_STRICT_ALL:
2977                         param.reg_strict = true;
2978                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2979                         param.reg_alpha2 = hwsim_alpha2s[0];
2980                         break;
2981                 case HWSIM_REGTEST_WORLD_ROAM:
2982                         if (i == 0)
2983                                 param.regd = &hwsim_world_regdom_custom_01;
2984                         break;
2985                 case HWSIM_REGTEST_CUSTOM_WORLD:
2986                         param.regd = &hwsim_world_regdom_custom_01;
2987                         break;
2988                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2989                         if (i == 0)
2990                                 param.regd = &hwsim_world_regdom_custom_01;
2991                         else if (i == 1)
2992                                 param.regd = &hwsim_world_regdom_custom_02;
2993                         break;
2994                 case HWSIM_REGTEST_STRICT_FOLLOW:
2995                         if (i == 0) {
2996                                 param.reg_strict = true;
2997                                 param.reg_alpha2 = hwsim_alpha2s[0];
2998                         }
2999                         break;
3000                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3001                         if (i == 0) {
3002                                 param.reg_strict = true;
3003                                 param.reg_alpha2 = hwsim_alpha2s[0];
3004                         } else if (i == 1) {
3005                                 param.reg_alpha2 = hwsim_alpha2s[1];
3006                         }
3007                         break;
3008                 case HWSIM_REGTEST_ALL:
3009                         switch (i) {
3010                         case 0:
3011                                 param.regd = &hwsim_world_regdom_custom_01;
3012                                 break;
3013                         case 1:
3014                                 param.regd = &hwsim_world_regdom_custom_02;
3015                                 break;
3016                         case 2:
3017                                 param.reg_alpha2 = hwsim_alpha2s[0];
3018                                 break;
3019                         case 3:
3020                                 param.reg_alpha2 = hwsim_alpha2s[1];
3021                                 break;
3022                         case 4:
3023                                 param.reg_strict = true;
3024                                 param.reg_alpha2 = hwsim_alpha2s[2];
3025                                 break;
3026                         }
3027                         break;
3028                 default:
3029                         break;
3030                 }
3031
3032                 param.p2p_device = support_p2p_device;
3033                 param.use_chanctx = channels > 1;
3034
3035                 err = mac80211_hwsim_new_radio(NULL, &param);
3036                 if (err < 0)
3037                         goto out_free_radios;
3038         }
3039
3040         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3041                                  hwsim_mon_setup);
3042         if (hwsim_mon == NULL) {
3043                 err = -ENOMEM;
3044                 goto out_free_radios;
3045         }
3046
3047         rtnl_lock();
3048         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3049         if (err < 0) {
3050                 rtnl_unlock();
3051                 goto out_free_radios;
3052         }
3053
3054         err = register_netdevice(hwsim_mon);
3055         if (err < 0) {
3056                 rtnl_unlock();
3057                 goto out_free_mon;
3058         }
3059         rtnl_unlock();
3060
3061         return 0;
3062
3063 out_free_mon:
3064         free_netdev(hwsim_mon);
3065 out_free_radios:
3066         mac80211_hwsim_free();
3067 out_unregister_driver:
3068         platform_driver_unregister(&mac80211_hwsim_driver);
3069         return err;
3070 }
3071 module_init(init_mac80211_hwsim);
3072
3073 static void __exit exit_mac80211_hwsim(void)
3074 {
3075         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3076
3077         hwsim_exit_netlink();
3078
3079         mac80211_hwsim_free();
3080         unregister_netdev(hwsim_mon);
3081         platform_driver_unregister(&mac80211_hwsim_driver);
3082 }
3083 module_exit(exit_mac80211_hwsim);