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/debugfs.h>
  29 #include <linux/module.h>
  30 #include <linux/ktime.h>
  31 #include <net/genetlink.h>
  32 #include "mac80211_hwsim.h"
  33
  34 #define WARN_QUEUE 100
  35 #define MAX_QUEUE 200
  36
  37 MODULE_AUTHOR("Jouni Malinen");
  38 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  39 MODULE_LICENSE("GPL");
  40
  41 static u32 wmediumd_pid;
  42
  43 static int radios = 2;
  44 module_param(radios, int, 0444);
  45 MODULE_PARM_DESC(radios, "Number of simulated radios");
  46
  47 static bool fake_hw_scan;
  48 module_param(fake_hw_scan, bool, 0444);
  49 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
  50
  51 /**
  52  * enum hwsim_regtest - the type of regulatory tests we offer
  53  *
  54  * These are the different values you can use for the regtest
  55  * module parameter. This is useful to help test world roaming
  56  * and the driver regulatory_hint() call and combinations of these.
  57  * If you want to do specific alpha2 regulatory domain tests simply
  58  * use the userspace regulatory request as that will be respected as
  59  * well without the need of this module parameter. This is designed
  60  * only for testing the driver regulatory request, world roaming
  61  * and all possible combinations.
  62  *
  63  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  64  *      this is the default value.
  65  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  66  *      hint, only one driver regulatory hint will be sent as such the
  67  *      secondary radios are expected to follow.
  68  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  69  *      request with all radios reporting the same regulatory domain.
  70  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  71  *      different regulatory domains requests. Expected behaviour is for
  72  *      an intersection to occur but each device will still use their
  73  *      respective regulatory requested domains. Subsequent radios will
  74  *      use the resulting intersection.
  75  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  76  *      this by using a custom beacon-capable regulatory domain for the first
  77  *      radio. All other device world roam.
  78  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  79  *      domain requests. All radios will adhere to this custom world regulatory
  80  *      domain.
  81  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  82  *      domain requests. The first radio will adhere to the first custom world
  83  *      regulatory domain, the second one to the second custom world regulatory
  84  *      domain. All other devices will world roam.
  85  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  86  *      settings, only the first radio will send a regulatory domain request
  87  *      and use strict settings. The rest of the radios are expected to follow.
  88  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  89  *      settings. All radios will adhere to this.
  90  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  91  *      domain settings, combined with secondary driver regulatory domain
  92  *      settings. The first radio will get a strict regulatory domain setting
  93  *      using the first driver regulatory request and the second radio will use
  94  *      non-strict settings using the second driver regulatory request. All
  95  *      other devices should follow the intersection created between the
  96  *      first two.
  97  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  98  *      at least 6 radios for a complete test. We will test in this order:
  99  *      1 - driver custom world regulatory domain
 100  *      2 - second custom world regulatory domain
 101  *      3 - first driver regulatory domain request
 102  *      4 - second driver regulatory domain request
 103  *      5 - strict regulatory domain settings using the third driver regulatory
 104  *          domain request
 105  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 106  *                 regulatory requests.
 107  */
 108 enum hwsim_regtest {
 109         HWSIM_REGTEST_DISABLED = 0,
 110         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 111         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 112         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 113         HWSIM_REGTEST_WORLD_ROAM = 4,
 114         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 115         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 116         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 117         HWSIM_REGTEST_STRICT_ALL = 8,
 118         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 119         HWSIM_REGTEST_ALL = 10,
 120 };
 121
 122 /* Set to one of the HWSIM_REGTEST_* values above */
 123 static int regtest = HWSIM_REGTEST_DISABLED;
 124 module_param(regtest, int, 0444);
 125 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 126
 127 static const char *hwsim_alpha2s[] = {
 128         "FI",
 129         "AL",
 130         "US",
 131         "DE",
 132         "JP",
 133         "AL",
 134 };
 135
 136 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 137         .n_reg_rules = 4,
 138         .alpha2 =  "99",
 139         .reg_rules = {
 140                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 141                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 142                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 143                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 144         }
 145 };
 146
 147 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 148         .n_reg_rules = 2,
 149         .alpha2 =  "99",
 150         .reg_rules = {
 151                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 152                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 153                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 154         }
 155 };
 156
 157 struct hwsim_vif_priv {
 158         u32 magic;
 159         u8 bssid[ETH_ALEN];
 160         bool assoc;
 161         u16 aid;
 162 };
 163
 164 #define HWSIM_VIF_MAGIC 0x69537748
 165
 166 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 167 {
 168         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 169         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 170 }
 171
 172 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 173 {
 174         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 175         vp->magic = HWSIM_VIF_MAGIC;
 176 }
 177
 178 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 179 {
 180         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 181         vp->magic = 0;
 182 }
 183
 184 struct hwsim_sta_priv {
 185         u32 magic;
 186 };
 187
 188 #define HWSIM_STA_MAGIC 0x6d537748
 189
 190 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 191 {
 192         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 193         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 194 }
 195
 196 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 197 {
 198         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 199         sp->magic = HWSIM_STA_MAGIC;
 200 }
 201
 202 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 203 {
 204         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 205         sp->magic = 0;
 206 }
 207
 208 static struct class *hwsim_class;
 209
 210 static struct net_device *hwsim_mon; /* global monitor netdev */
 211
 212 #define CHAN2G(_freq)  { \
 213         .band = IEEE80211_BAND_2GHZ, \
 214         .center_freq = (_freq), \
 215         .hw_value = (_freq), \
 216         .max_power = 20, \
 217 }
 218
 219 #define CHAN5G(_freq) { \
 220         .band = IEEE80211_BAND_5GHZ, \
 221         .center_freq = (_freq), \
 222         .hw_value = (_freq), \
 223         .max_power = 20, \
 224 }
 225
 226 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 227         CHAN2G(2412), /* Channel 1 */
 228         CHAN2G(2417), /* Channel 2 */
 229         CHAN2G(2422), /* Channel 3 */
 230         CHAN2G(2427), /* Channel 4 */
 231         CHAN2G(2432), /* Channel 5 */
 232         CHAN2G(2437), /* Channel 6 */
 233         CHAN2G(2442), /* Channel 7 */
 234         CHAN2G(2447), /* Channel 8 */
 235         CHAN2G(2452), /* Channel 9 */
 236         CHAN2G(2457), /* Channel 10 */
 237         CHAN2G(2462), /* Channel 11 */
 238         CHAN2G(2467), /* Channel 12 */
 239         CHAN2G(2472), /* Channel 13 */
 240         CHAN2G(2484), /* Channel 14 */
 241 };
 242
 243 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 244         CHAN5G(5180), /* Channel 36 */
 245         CHAN5G(5200), /* Channel 40 */
 246         CHAN5G(5220), /* Channel 44 */
 247         CHAN5G(5240), /* Channel 48 */
 248
 249         CHAN5G(5260), /* Channel 52 */
 250         CHAN5G(5280), /* Channel 56 */
 251         CHAN5G(5300), /* Channel 60 */
 252         CHAN5G(5320), /* Channel 64 */
 253
 254         CHAN5G(5500), /* Channel 100 */
 255         CHAN5G(5520), /* Channel 104 */
 256         CHAN5G(5540), /* Channel 108 */
 257         CHAN5G(5560), /* Channel 112 */
 258         CHAN5G(5580), /* Channel 116 */
 259         CHAN5G(5600), /* Channel 120 */
 260         CHAN5G(5620), /* Channel 124 */
 261         CHAN5G(5640), /* Channel 128 */
 262         CHAN5G(5660), /* Channel 132 */
 263         CHAN5G(5680), /* Channel 136 */
 264         CHAN5G(5700), /* Channel 140 */
 265
 266         CHAN5G(5745), /* Channel 149 */
 267         CHAN5G(5765), /* Channel 153 */
 268         CHAN5G(5785), /* Channel 157 */
 269         CHAN5G(5805), /* Channel 161 */
 270         CHAN5G(5825), /* Channel 165 */
 271 };
 272
 273 static const struct ieee80211_rate hwsim_rates[] = {
 274         { .bitrate = 10 },
 275         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 276         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 277         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 278         { .bitrate = 60 },
 279         { .bitrate = 90 },
 280         { .bitrate = 120 },
 281         { .bitrate = 180 },
 282         { .bitrate = 240 },
 283         { .bitrate = 360 },
 284         { .bitrate = 480 },
 285         { .bitrate = 540 }
 286 };
 287
 288 static spinlock_t hwsim_radio_lock;
 289 static struct list_head hwsim_radios;
 290
 291 struct mac80211_hwsim_data {
 292         struct list_head list;
 293         struct ieee80211_hw *hw;
 294         struct device *dev;
 295         struct ieee80211_supported_band bands[2];
 296         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 297         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 298         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 299
 300         struct mac_address addresses[2];
 301
 302         struct ieee80211_channel *channel;
 303         unsigned long beacon_int; /* in jiffies unit */
 304         unsigned int rx_filter;
 305         bool started, idle, scanning;
 306         struct mutex mutex;
 307         struct timer_list beacon_timer;
 308         enum ps_mode {
 309                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 310         } ps;
 311         bool ps_poll_pending;
 312         struct dentry *debugfs;
 313         struct dentry *debugfs_ps;
 314
 315         struct sk_buff_head pending;    /* packets pending */
 316         /*
 317          * Only radios in the same group can communicate together (the
 318          * channel has to match too). Each bit represents a group. A
 319          * radio can be in more then one group.
 320          */
 321         u64 group;
 322         struct dentry *debugfs_group;
 323
 324         int power_level;
 325
 326         /* difference between this hw's clock and the real clock, in usecs */
 327         u64 tsf_offset;
 328 };
 329
 330
 331 struct hwsim_radiotap_hdr {
 332         struct ieee80211_radiotap_header hdr;
 333         __le64 rt_tsft;
 334         u8 rt_flags;
 335         u8 rt_rate;
 336         __le16 rt_channel;
 337         __le16 rt_chbitmask;
 338 } __packed;
 339
 340 /* MAC80211_HWSIM netlinf family */
 341 static struct genl_family hwsim_genl_family = {
 342         .id = GENL_ID_GENERATE,
 343         .hdrsize = 0,
 344         .name = "MAC80211_HWSIM",
 345         .version = 1,
 346         .maxattr = HWSIM_ATTR_MAX,
 347 };
 348
 349 /* MAC80211_HWSIM netlink policy */
 350
 351 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 352         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 353                                        .len = 6*sizeof(u8) },
 354         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 355                                           .len = 6*sizeof(u8) },
 356         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 357                                .len = IEEE80211_MAX_DATA_LEN },
 358         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 359         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 360         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 361         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 362                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 363                                         struct hwsim_tx_rate)},
 364         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 365 };
 366
 367 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 368                                         struct net_device *dev)
 369 {
 370         /* TODO: allow packet injection */
 371         dev_kfree_skb(skb);
 372         return NETDEV_TX_OK;
 373 }
 374
 375 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 376 {
 377         struct timeval tv = ktime_to_timeval(ktime_get_real());
 378         u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
 379         return cpu_to_le64(now + data->tsf_offset);
 380 }
 381
 382 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 383                 struct ieee80211_vif *vif)
 384 {
 385         struct mac80211_hwsim_data *data = hw->priv;
 386         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 387 }
 388
 389 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 390                 struct ieee80211_vif *vif, u64 tsf)
 391 {
 392         struct mac80211_hwsim_data *data = hw->priv;
 393         struct timeval tv = ktime_to_timeval(ktime_get_real());
 394         u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
 395         data->tsf_offset = tsf - now;
 396 }
 397
 398 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 399                                       struct sk_buff *tx_skb)
 400 {
 401         struct mac80211_hwsim_data *data = hw->priv;
 402         struct sk_buff *skb;
 403         struct hwsim_radiotap_hdr *hdr;
 404         u16 flags;
 405         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 406         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 407
 408         if (!netif_running(hwsim_mon))
 409                 return;
 410
 411         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 412         if (skb == NULL)
 413                 return;
 414
 415         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 416         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 417         hdr->hdr.it_pad = 0;
 418         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 419         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 420                                           (1 << IEEE80211_RADIOTAP_RATE) |
 421                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 422                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 423         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 424         hdr->rt_flags = 0;
 425         hdr->rt_rate = txrate->bitrate / 5;
 426         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 427         flags = IEEE80211_CHAN_2GHZ;
 428         if (txrate->flags & IEEE80211_RATE_ERP_G)
 429                 flags |= IEEE80211_CHAN_OFDM;
 430         else
 431                 flags |= IEEE80211_CHAN_CCK;
 432         hdr->rt_chbitmask = cpu_to_le16(flags);
 433
 434         skb->dev = hwsim_mon;
 435         skb_set_mac_header(skb, 0);
 436         skb->ip_summed = CHECKSUM_UNNECESSARY;
 437         skb->pkt_type = PACKET_OTHERHOST;
 438         skb->protocol = htons(ETH_P_802_2);
 439         memset(skb->cb, 0, sizeof(skb->cb));
 440         netif_rx(skb);
 441 }
 442
 443
 444 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 445 {
 446         struct mac80211_hwsim_data *data = hw->priv;
 447         struct sk_buff *skb;
 448         struct hwsim_radiotap_hdr *hdr;
 449         u16 flags;
 450         struct ieee80211_hdr *hdr11;
 451
 452         if (!netif_running(hwsim_mon))
 453                 return;
 454
 455         skb = dev_alloc_skb(100);
 456         if (skb == NULL)
 457                 return;
 458
 459         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 460         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 461         hdr->hdr.it_pad = 0;
 462         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 463         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 464                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 465         hdr->rt_flags = 0;
 466         hdr->rt_rate = 0;
 467         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 468         flags = IEEE80211_CHAN_2GHZ;
 469         hdr->rt_chbitmask = cpu_to_le16(flags);
 470
 471         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 472         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 473                                            IEEE80211_STYPE_ACK);
 474         hdr11->duration_id = cpu_to_le16(0);
 475         memcpy(hdr11->addr1, addr, ETH_ALEN);
 476
 477         skb->dev = hwsim_mon;
 478         skb_set_mac_header(skb, 0);
 479         skb->ip_summed = CHECKSUM_UNNECESSARY;
 480         skb->pkt_type = PACKET_OTHERHOST;
 481         skb->protocol = htons(ETH_P_802_2);
 482         memset(skb->cb, 0, sizeof(skb->cb));
 483         netif_rx(skb);
 484 }
 485
 486
 487 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 488                            struct sk_buff *skb)
 489 {
 490         switch (data->ps) {
 491         case PS_DISABLED:
 492                 return true;
 493         case PS_ENABLED:
 494                 return false;
 495         case PS_AUTO_POLL:
 496                 /* TODO: accept (some) Beacons by default and other frames only
 497                  * if pending PS-Poll has been sent */
 498                 return true;
 499         case PS_MANUAL_POLL:
 500                 /* Allow unicast frames to own address if there is a pending
 501                  * PS-Poll */
 502                 if (data->ps_poll_pending &&
 503                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 504                            ETH_ALEN) == 0) {
 505                         data->ps_poll_pending = false;
 506                         return true;
 507                 }
 508                 return false;
 509         }
 510
 511         return true;
 512 }
 513
 514
 515 struct mac80211_hwsim_addr_match_data {
 516         bool ret;
 517         const u8 *addr;
 518 };
 519
 520 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 521                                      struct ieee80211_vif *vif)
 522 {
 523         struct mac80211_hwsim_addr_match_data *md = data;
 524         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 525                 md->ret = true;
 526 }
 527
 528
 529 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 530                                       const u8 *addr)
 531 {
 532         struct mac80211_hwsim_addr_match_data md;
 533
 534         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 535                 return true;
 536
 537         md.ret = false;
 538         md.addr = addr;
 539         ieee80211_iterate_active_interfaces_atomic(data->hw,
 540                                                    mac80211_hwsim_addr_iter,
 541                                                    &md);
 542
 543         return md.ret;
 544 }
 545
 546 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 547                                        struct sk_buff *my_skb,
 548                                        int dst_pid)
 549 {
 550         struct sk_buff *skb;
 551         struct mac80211_hwsim_data *data = hw->priv;
 552         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 553         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 554         void *msg_head;
 555         unsigned int hwsim_flags = 0;
 556         int i;
 557         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 558
 559         if (data->idle) {
 560                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 561                 dev_kfree_skb(my_skb);
 562                 return;
 563         }
 564
 565         if (data->ps != PS_DISABLED)
 566                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 567         /* If the queue contains MAX_QUEUE skb's drop some */
 568         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 569                 /* Droping until WARN_QUEUE level */
 570                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 571                         skb_dequeue(&data->pending);
 572         }
 573
 574         skb = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
 575         if (skb == NULL)
 576                 goto nla_put_failure;
 577
 578         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 579                                HWSIM_CMD_FRAME);
 580         if (msg_head == NULL) {
 581                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 582                 goto nla_put_failure;
 583         }
 584
 585         NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 586                      sizeof(struct mac_address), data->addresses[1].addr);
 587
 588         /* We get the skb->data */
 589         NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
 590
 591         /* We get the flags for this transmission, and we translate them to
 592            wmediumd flags  */
 593
 594         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 595                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 596
 597         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 598                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 599
 600         NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
 601
 602         /* We get the tx control (rate and retries) info*/
 603
 604         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 605                 tx_attempts[i].idx = info->status.rates[i].idx;
 606                 tx_attempts[i].count = info->status.rates[i].count;
 607         }
 608
 609         NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
 610                      sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 611                      tx_attempts);
 612
 613         /* We create a cookie to identify this skb */
 614         NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
 615
 616         genlmsg_end(skb, msg_head);
 617         genlmsg_unicast(&init_net, skb, dst_pid);
 618
 619         /* Enqueue the packet */
 620         skb_queue_tail(&data->pending, my_skb);
 621         return;
 622
 623 nla_put_failure:
 624         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 625 }
 626
 627 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 628                                           struct sk_buff *skb)
 629 {
 630         struct mac80211_hwsim_data *data = hw->priv, *data2;
 631         bool ack = false;
 632         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 633         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 634         struct ieee80211_rx_status rx_status;
 635
 636         if (data->idle) {
 637                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 638                 return false;
 639         }
 640
 641         memset(&rx_status, 0, sizeof(rx_status));
 642         rx_status.flag |= RX_FLAG_MACTIME_MPDU;
 643         rx_status.freq = data->channel->center_freq;
 644         rx_status.band = data->channel->band;
 645         rx_status.rate_idx = info->control.rates[0].idx;
 646         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 647                 rx_status.flag |= RX_FLAG_HT;
 648         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 649                 rx_status.flag |= RX_FLAG_40MHZ;
 650         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 651                 rx_status.flag |= RX_FLAG_SHORT_GI;
 652         /* TODO: simulate real signal strength (and optional packet loss) */
 653         rx_status.signal = data->power_level - 50;
 654
 655         if (data->ps != PS_DISABLED)
 656                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 657
 658         /* release the skb's source info */
 659         skb_orphan(skb);
 660         skb_dst_drop(skb);
 661         skb->mark = 0;
 662         secpath_reset(skb);
 663         nf_reset(skb);
 664
 665         /* Copy skb to all enabled radios that are on the current frequency */
 666         spin_lock(&hwsim_radio_lock);
 667         list_for_each_entry(data2, &hwsim_radios, list) {
 668                 struct sk_buff *nskb;
 669
 670                 if (data == data2)
 671                         continue;
 672
 673                 if (data2->idle || !data2->started ||
 674                     !hwsim_ps_rx_ok(data2, skb) ||
 675                     !data->channel || !data2->channel ||
 676                     data->channel->center_freq != data2->channel->center_freq ||
 677                     !(data->group & data2->group))
 678                         continue;
 679
 680                 nskb = skb_copy(skb, GFP_ATOMIC);
 681                 if (nskb == NULL)
 682                         continue;
 683
 684                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 685                         ack = true;
 686                 rx_status.mactime =
 687                         le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
 688                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 689                 ieee80211_rx_irqsafe(data2->hw, nskb);
 690         }
 691         spin_unlock(&hwsim_radio_lock);
 692
 693         return ack;
 694 }
 695
 696 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 697 {
 698         bool ack;
 699         struct ieee80211_tx_info *txi;
 700         u32 _pid;
 701         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) skb->data;
 702         struct mac80211_hwsim_data *data = hw->priv;
 703
 704         if (ieee80211_is_beacon(mgmt->frame_control) ||
 705             ieee80211_is_probe_resp(mgmt->frame_control))
 706                 mgmt->u.beacon.timestamp = __mac80211_hwsim_get_tsf(data);
 707
 708         mac80211_hwsim_monitor_rx(hw, skb);
 709
 710         if (skb->len < 10) {
 711                 /* Should not happen; just a sanity check for addr1 use */
 712                 dev_kfree_skb(skb);
 713                 return;
 714         }
 715
 716         /* wmediumd mode check */
 717         _pid = ACCESS_ONCE(wmediumd_pid);
 718
 719         if (_pid)
 720                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 721
 722         /* NO wmediumd detected, perfect medium simulation */
 723         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
 724
 725         if (ack && skb->len >= 16) {
 726                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 727                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 728         }
 729
 730         txi = IEEE80211_SKB_CB(skb);
 731
 732         if (txi->control.vif)
 733                 hwsim_check_magic(txi->control.vif);
 734         if (txi->control.sta)
 735                 hwsim_check_sta_magic(txi->control.sta);
 736
 737         ieee80211_tx_info_clear_status(txi);
 738         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 739                 txi->flags |= IEEE80211_TX_STAT_ACK;
 740         ieee80211_tx_status_irqsafe(hw, skb);
 741 }
 742
 743
 744 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 745 {
 746         struct mac80211_hwsim_data *data = hw->priv;
 747         wiphy_debug(hw->wiphy, "%s\n", __func__);
 748         data->started = true;
 749         return 0;
 750 }
 751
 752
 753 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 754 {
 755         struct mac80211_hwsim_data *data = hw->priv;
 756         data->started = false;
 757         del_timer(&data->beacon_timer);
 758         wiphy_debug(hw->wiphy, "%s\n", __func__);
 759 }
 760
 761
 762 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 763                                         struct ieee80211_vif *vif)
 764 {
 765         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 766                     __func__, ieee80211_vif_type_p2p(vif),
 767                     vif->addr);
 768         hwsim_set_magic(vif);
 769         return 0;
 770 }
 771
 772
 773 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 774                                            struct ieee80211_vif *vif,
 775                                            enum nl80211_iftype newtype,
 776                                            bool newp2p)
 777 {
 778         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 779         wiphy_debug(hw->wiphy,
 780                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 781                     __func__, ieee80211_vif_type_p2p(vif),
 782                     newtype, vif->addr);
 783         hwsim_check_magic(vif);
 784
 785         return 0;
 786 }
 787
 788 static void mac80211_hwsim_remove_interface(
 789         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 790 {
 791         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 792                     __func__, ieee80211_vif_type_p2p(vif),
 793                     vif->addr);
 794         hwsim_check_magic(vif);
 795         hwsim_clear_magic(vif);
 796 }
 797
 798
 799 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 800                                      struct ieee80211_vif *vif)
 801 {
 802         struct ieee80211_hw *hw = arg;
 803         struct mac80211_hwsim_data *data = hw->priv;
 804         struct sk_buff *skb;
 805         struct ieee80211_tx_info *info;
 806         u32 _pid;
 807         struct ieee80211_mgmt *mgmt;
 808
 809         hwsim_check_magic(vif);
 810
 811         if (vif->type != NL80211_IFTYPE_AP &&
 812             vif->type != NL80211_IFTYPE_MESH_POINT &&
 813             vif->type != NL80211_IFTYPE_ADHOC)
 814                 return;
 815
 816         skb = ieee80211_beacon_get(hw, vif);
 817         if (skb == NULL)
 818                 return;
 819         info = IEEE80211_SKB_CB(skb);
 820
 821         mgmt = (struct ieee80211_mgmt *) skb->data;
 822         mgmt->u.beacon.timestamp = __mac80211_hwsim_get_tsf(data);
 823
 824         mac80211_hwsim_monitor_rx(hw, skb);
 825
 826         /* wmediumd mode check */
 827         _pid = ACCESS_ONCE(wmediumd_pid);
 828
 829         if (_pid)
 830                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 831
 832         mac80211_hwsim_tx_frame_no_nl(hw, skb);
 833         dev_kfree_skb(skb);
 834 }
 835
 836
 837 static void mac80211_hwsim_beacon(unsigned long arg)
 838 {
 839         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 840         struct mac80211_hwsim_data *data = hw->priv;
 841
 842         if (!data->started)
 843                 return;
 844
 845         ieee80211_iterate_active_interfaces_atomic(
 846                 hw, mac80211_hwsim_beacon_tx, hw);
 847
 848         data->beacon_timer.expires = jiffies + data->beacon_int;
 849         add_timer(&data->beacon_timer);
 850 }
 851
 852 static const char *hwsim_chantypes[] = {
 853         [NL80211_CHAN_NO_HT] = "noht",
 854         [NL80211_CHAN_HT20] = "ht20",
 855         [NL80211_CHAN_HT40MINUS] = "ht40-",
 856         [NL80211_CHAN_HT40PLUS] = "ht40+",
 857 };
 858
 859 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 860 {
 861         struct mac80211_hwsim_data *data = hw->priv;
 862         struct ieee80211_conf *conf = &hw->conf;
 863         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 864                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 865                 [IEEE80211_SMPS_OFF] = "off",
 866                 [IEEE80211_SMPS_STATIC] = "static",
 867                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 868         };
 869
 870         wiphy_debug(hw->wiphy,
 871                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 872                     __func__,
 873                     conf->channel->center_freq,
 874                     hwsim_chantypes[conf->channel_type],
 875                     !!(conf->flags & IEEE80211_CONF_IDLE),
 876                     !!(conf->flags & IEEE80211_CONF_PS),
 877                     smps_modes[conf->smps_mode]);
 878
 879         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 880
 881         data->channel = conf->channel;
 882         data->power_level = conf->power_level;
 883         if (!data->started || !data->beacon_int)
 884                 del_timer(&data->beacon_timer);
 885         else
 886                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 887
 888         return 0;
 889 }
 890
 891
 892 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 893                                             unsigned int changed_flags,
 894                                             unsigned int *total_flags,u64 multicast)
 895 {
 896         struct mac80211_hwsim_data *data = hw->priv;
 897
 898         wiphy_debug(hw->wiphy, "%s\n", __func__);
 899
 900         data->rx_filter = 0;
 901         if (*total_flags & FIF_PROMISC_IN_BSS)
 902                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 903         if (*total_flags & FIF_ALLMULTI)
 904                 data->rx_filter |= FIF_ALLMULTI;
 905
 906         *total_flags = data->rx_filter;
 907 }
 908
 909 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 910                                             struct ieee80211_vif *vif,
 911                                             struct ieee80211_bss_conf *info,
 912                                             u32 changed)
 913 {
 914         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 915         struct mac80211_hwsim_data *data = hw->priv;
 916
 917         hwsim_check_magic(vif);
 918
 919         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
 920
 921         if (changed & BSS_CHANGED_BSSID) {
 922                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
 923                             __func__, info->bssid);
 924                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 925         }
 926
 927         if (changed & BSS_CHANGED_ASSOC) {
 928                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
 929                             info->assoc, info->aid);
 930                 vp->assoc = info->assoc;
 931                 vp->aid = info->aid;
 932         }
 933
 934         if (changed & BSS_CHANGED_BEACON_INT) {
 935                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
 936                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 937                 if (WARN_ON(!data->beacon_int))
 938                         data->beacon_int = 1;
 939                 if (data->started)
 940                         mod_timer(&data->beacon_timer,
 941                                   jiffies + data->beacon_int);
 942         }
 943
 944         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 945                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
 946                             info->use_cts_prot);
 947         }
 948
 949         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 950                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
 951                             info->use_short_preamble);
 952         }
 953
 954         if (changed & BSS_CHANGED_ERP_SLOT) {
 955                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
 956         }
 957
 958         if (changed & BSS_CHANGED_HT) {
 959                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
 960                             info->ht_operation_mode,
 961                             hwsim_chantypes[info->channel_type]);
 962         }
 963
 964         if (changed & BSS_CHANGED_BASIC_RATES) {
 965                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
 966                             (unsigned long long) info->basic_rates);
 967         }
 968 }
 969
 970 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 971                                   struct ieee80211_vif *vif,
 972                                   struct ieee80211_sta *sta)
 973 {
 974         hwsim_check_magic(vif);
 975         hwsim_set_sta_magic(sta);
 976
 977         return 0;
 978 }
 979
 980 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 981                                      struct ieee80211_vif *vif,
 982                                      struct ieee80211_sta *sta)
 983 {
 984         hwsim_check_magic(vif);
 985         hwsim_clear_sta_magic(sta);
 986
 987         return 0;
 988 }
 989
 990 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 991                                       struct ieee80211_vif *vif,
 992                                       enum sta_notify_cmd cmd,
 993                                       struct ieee80211_sta *sta)
 994 {
 995         hwsim_check_magic(vif);
 996
 997         switch (cmd) {
 998         case STA_NOTIFY_SLEEP:
 999         case STA_NOTIFY_AWAKE:
1000                 /* TODO: make good use of these flags */
1001                 break;
1002         default:
1003                 WARN(1, "Invalid sta notify: %d\n", cmd);
1004                 break;
1005         }
1006 }
1007
1008 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1009                                   struct ieee80211_sta *sta,
1010                                   bool set)
1011 {
1012         hwsim_check_sta_magic(sta);
1013         return 0;
1014 }
1015
1016 static int mac80211_hwsim_conf_tx(
1017         struct ieee80211_hw *hw,
1018         struct ieee80211_vif *vif, u16 queue,
1019         const struct ieee80211_tx_queue_params *params)
1020 {
1021         wiphy_debug(hw->wiphy,
1022                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1023                     __func__, queue,
1024                     params->txop, params->cw_min,
1025                     params->cw_max, params->aifs);
1026         return 0;
1027 }
1028
1029 static int mac80211_hwsim_get_survey(
1030         struct ieee80211_hw *hw, int idx,
1031         struct survey_info *survey)
1032 {
1033         struct ieee80211_conf *conf = &hw->conf;
1034
1035         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1036
1037         if (idx != 0)
1038                 return -ENOENT;
1039
1040         /* Current channel */
1041         survey->channel = conf->channel;
1042
1043         /*
1044          * Magically conjured noise level --- this is only ok for simulated hardware.
1045          *
1046          * A real driver which cannot determine the real channel noise MUST NOT
1047          * report any noise, especially not a magically conjured one :-)
1048          */
1049         survey->filled = SURVEY_INFO_NOISE_DBM;
1050         survey->noise = -92;
1051
1052         return 0;
1053 }
1054
1055 #ifdef CONFIG_NL80211_TESTMODE
1056 /*
1057  * This section contains example code for using netlink
1058  * attributes with the testmode command in nl80211.
1059  */
1060
1061 /* These enums need to be kept in sync with userspace */
1062 enum hwsim_testmode_attr {
1063         __HWSIM_TM_ATTR_INVALID = 0,
1064         HWSIM_TM_ATTR_CMD       = 1,
1065         HWSIM_TM_ATTR_PS        = 2,
1066
1067         /* keep last */
1068         __HWSIM_TM_ATTR_AFTER_LAST,
1069         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1070 };
1071
1072 enum hwsim_testmode_cmd {
1073         HWSIM_TM_CMD_SET_PS             = 0,
1074         HWSIM_TM_CMD_GET_PS             = 1,
1075 };
1076
1077 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1078         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1079         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1080 };
1081
1082 static int hwsim_fops_ps_write(void *dat, u64 val);
1083
1084 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1085                                        void *data, int len)
1086 {
1087         struct mac80211_hwsim_data *hwsim = hw->priv;
1088         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1089         struct sk_buff *skb;
1090         int err, ps;
1091
1092         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1093                         hwsim_testmode_policy);
1094         if (err)
1095                 return err;
1096
1097         if (!tb[HWSIM_TM_ATTR_CMD])
1098                 return -EINVAL;
1099
1100         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1101         case HWSIM_TM_CMD_SET_PS:
1102                 if (!tb[HWSIM_TM_ATTR_PS])
1103                         return -EINVAL;
1104                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1105                 return hwsim_fops_ps_write(hwsim, ps);
1106         case HWSIM_TM_CMD_GET_PS:
1107                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1108                                                 nla_total_size(sizeof(u32)));
1109                 if (!skb)
1110                         return -ENOMEM;
1111                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
1112                 return cfg80211_testmode_reply(skb);
1113         default:
1114                 return -EOPNOTSUPP;
1115         }
1116
1117  nla_put_failure:
1118         kfree_skb(skb);
1119         return -ENOBUFS;
1120 }
1121 #endif
1122
1123 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1124                                        struct ieee80211_vif *vif,
1125                                        enum ieee80211_ampdu_mlme_action action,
1126                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1127                                        u8 buf_size)
1128 {
1129         switch (action) {
1130         case IEEE80211_AMPDU_TX_START:
1131                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1132                 break;
1133         case IEEE80211_AMPDU_TX_STOP:
1134                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1135                 break;
1136         case IEEE80211_AMPDU_TX_OPERATIONAL:
1137                 break;
1138         case IEEE80211_AMPDU_RX_START:
1139         case IEEE80211_AMPDU_RX_STOP:
1140                 break;
1141         default:
1142                 return -EOPNOTSUPP;
1143         }
1144
1145         return 0;
1146 }
1147
1148 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1149 {
1150         /* Not implemented, queues only on kernel side */
1151 }
1152
1153 struct hw_scan_done {
1154         struct delayed_work w;
1155         struct ieee80211_hw *hw;
1156 };
1157
1158 static void hw_scan_done(struct work_struct *work)
1159 {
1160         struct hw_scan_done *hsd =
1161                 container_of(work, struct hw_scan_done, w.work);
1162
1163         ieee80211_scan_completed(hsd->hw, false);
1164         kfree(hsd);
1165 }
1166
1167 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1168                                   struct ieee80211_vif *vif,
1169                                   struct cfg80211_scan_request *req)
1170 {
1171         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1172         int i;
1173
1174         if (!hsd)
1175                 return -ENOMEM;
1176
1177         hsd->hw = hw;
1178         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1179
1180         printk(KERN_DEBUG "hwsim hw_scan request\n");
1181         for (i = 0; i < req->n_channels; i++)
1182                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1183                         req->channels[i]->center_freq);
1184         print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1185                         16, 1, req->ie, req->ie_len, 1);
1186
1187         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1188
1189         return 0;
1190 }
1191
1192 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1193 {
1194         struct mac80211_hwsim_data *hwsim = hw->priv;
1195
1196         mutex_lock(&hwsim->mutex);
1197
1198         if (hwsim->scanning) {
1199                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1200                 goto out;
1201         }
1202
1203         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1204         hwsim->scanning = true;
1205
1206 out:
1207         mutex_unlock(&hwsim->mutex);
1208 }
1209
1210 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1211 {
1212         struct mac80211_hwsim_data *hwsim = hw->priv;
1213
1214         mutex_lock(&hwsim->mutex);
1215
1216         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1217         hwsim->scanning = false;
1218
1219         mutex_unlock(&hwsim->mutex);
1220 }
1221
1222 static struct ieee80211_ops mac80211_hwsim_ops =
1223 {
1224         .tx = mac80211_hwsim_tx,
1225         .start = mac80211_hwsim_start,
1226         .stop = mac80211_hwsim_stop,
1227         .add_interface = mac80211_hwsim_add_interface,
1228         .change_interface = mac80211_hwsim_change_interface,
1229         .remove_interface = mac80211_hwsim_remove_interface,
1230         .config = mac80211_hwsim_config,
1231         .configure_filter = mac80211_hwsim_configure_filter,
1232         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1233         .sta_add = mac80211_hwsim_sta_add,
1234         .sta_remove = mac80211_hwsim_sta_remove,
1235         .sta_notify = mac80211_hwsim_sta_notify,
1236         .set_tim = mac80211_hwsim_set_tim,
1237         .conf_tx = mac80211_hwsim_conf_tx,
1238         .get_survey = mac80211_hwsim_get_survey,
1239         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1240         .ampdu_action = mac80211_hwsim_ampdu_action,
1241         .sw_scan_start = mac80211_hwsim_sw_scan,
1242         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1243         .flush = mac80211_hwsim_flush,
1244         .get_tsf = mac80211_hwsim_get_tsf,
1245         .set_tsf = mac80211_hwsim_set_tsf,
1246 };
1247
1248
1249 static void mac80211_hwsim_free(void)
1250 {
1251         struct list_head tmplist, *i, *tmp;
1252         struct mac80211_hwsim_data *data, *tmpdata;
1253
1254         INIT_LIST_HEAD(&tmplist);
1255
1256         spin_lock_bh(&hwsim_radio_lock);
1257         list_for_each_safe(i, tmp, &hwsim_radios)
1258                 list_move(i, &tmplist);
1259         spin_unlock_bh(&hwsim_radio_lock);
1260
1261         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1262                 debugfs_remove(data->debugfs_group);
1263                 debugfs_remove(data->debugfs_ps);
1264                 debugfs_remove(data->debugfs);
1265                 ieee80211_unregister_hw(data->hw);
1266                 device_unregister(data->dev);
1267                 ieee80211_free_hw(data->hw);
1268         }
1269         class_destroy(hwsim_class);
1270 }
1271
1272
1273 static struct device_driver mac80211_hwsim_driver = {
1274         .name = "mac80211_hwsim"
1275 };
1276
1277 static const struct net_device_ops hwsim_netdev_ops = {
1278         .ndo_start_xmit         = hwsim_mon_xmit,
1279         .ndo_change_mtu         = eth_change_mtu,
1280         .ndo_set_mac_address    = eth_mac_addr,
1281         .ndo_validate_addr      = eth_validate_addr,
1282 };
1283
1284 static void hwsim_mon_setup(struct net_device *dev)
1285 {
1286         dev->netdev_ops = &hwsim_netdev_ops;
1287         dev->destructor = free_netdev;
1288         ether_setup(dev);
1289         dev->tx_queue_len = 0;
1290         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1291         memset(dev->dev_addr, 0, ETH_ALEN);
1292         dev->dev_addr[0] = 0x12;
1293 }
1294
1295
1296 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1297 {
1298         struct mac80211_hwsim_data *data = dat;
1299         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1300         struct sk_buff *skb;
1301         struct ieee80211_pspoll *pspoll;
1302         u32 _pid;
1303
1304         if (!vp->assoc)
1305                 return;
1306
1307         wiphy_debug(data->hw->wiphy,
1308                     "%s: send PS-Poll to %pM for aid %d\n",
1309                     __func__, vp->bssid, vp->aid);
1310
1311         skb = dev_alloc_skb(sizeof(*pspoll));
1312         if (!skb)
1313                 return;
1314         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1315         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1316                                             IEEE80211_STYPE_PSPOLL |
1317                                             IEEE80211_FCTL_PM);
1318         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1319         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1320         memcpy(pspoll->ta, mac, ETH_ALEN);
1321
1322         /* wmediumd mode check */
1323         _pid = ACCESS_ONCE(wmediumd_pid);
1324
1325         if (_pid)
1326                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1327
1328         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1329                 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1330         dev_kfree_skb(skb);
1331 }
1332
1333
1334 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1335                                 struct ieee80211_vif *vif, int ps)
1336 {
1337         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1338         struct sk_buff *skb;
1339         struct ieee80211_hdr *hdr;
1340         u32 _pid;
1341
1342         if (!vp->assoc)
1343                 return;
1344
1345         wiphy_debug(data->hw->wiphy,
1346                     "%s: send data::nullfunc to %pM ps=%d\n",
1347                     __func__, vp->bssid, ps);
1348
1349         skb = dev_alloc_skb(sizeof(*hdr));
1350         if (!skb)
1351                 return;
1352         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1353         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1354                                          IEEE80211_STYPE_NULLFUNC |
1355                                          (ps ? IEEE80211_FCTL_PM : 0));
1356         hdr->duration_id = cpu_to_le16(0);
1357         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1358         memcpy(hdr->addr2, mac, ETH_ALEN);
1359         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1360
1361         /* wmediumd mode check */
1362         _pid = ACCESS_ONCE(wmediumd_pid);
1363
1364         if (_pid)
1365                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1366
1367         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1368                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1369         dev_kfree_skb(skb);
1370 }
1371
1372
1373 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1374                                    struct ieee80211_vif *vif)
1375 {
1376         struct mac80211_hwsim_data *data = dat;
1377         hwsim_send_nullfunc(data, mac, vif, 1);
1378 }
1379
1380
1381 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1382                                       struct ieee80211_vif *vif)
1383 {
1384         struct mac80211_hwsim_data *data = dat;
1385         hwsim_send_nullfunc(data, mac, vif, 0);
1386 }
1387
1388
1389 static int hwsim_fops_ps_read(void *dat, u64 *val)
1390 {
1391         struct mac80211_hwsim_data *data = dat;
1392         *val = data->ps;
1393         return 0;
1394 }
1395
1396 static int hwsim_fops_ps_write(void *dat, u64 val)
1397 {
1398         struct mac80211_hwsim_data *data = dat;
1399         enum ps_mode old_ps;
1400
1401         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1402             val != PS_MANUAL_POLL)
1403                 return -EINVAL;
1404
1405         old_ps = data->ps;
1406         data->ps = val;
1407
1408         if (val == PS_MANUAL_POLL) {
1409                 ieee80211_iterate_active_interfaces(data->hw,
1410                                                     hwsim_send_ps_poll, data);
1411                 data->ps_poll_pending = true;
1412         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1413                 ieee80211_iterate_active_interfaces(data->hw,
1414                                                     hwsim_send_nullfunc_ps,
1415                                                     data);
1416         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1417                 ieee80211_iterate_active_interfaces(data->hw,
1418                                                     hwsim_send_nullfunc_no_ps,
1419                                                     data);
1420         }
1421
1422         return 0;
1423 }
1424
1425 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1426                         "%llu\n");
1427
1428
1429 static int hwsim_fops_group_read(void *dat, u64 *val)
1430 {
1431         struct mac80211_hwsim_data *data = dat;
1432         *val = data->group;
1433         return 0;
1434 }
1435
1436 static int hwsim_fops_group_write(void *dat, u64 val)
1437 {
1438         struct mac80211_hwsim_data *data = dat;
1439         data->group = val;
1440         return 0;
1441 }
1442
1443 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1444                         hwsim_fops_group_read, hwsim_fops_group_write,
1445                         "%llx\n");
1446
1447 struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1448                              struct mac_address *addr)
1449 {
1450         struct mac80211_hwsim_data *data;
1451         bool _found = false;
1452
1453         spin_lock_bh(&hwsim_radio_lock);
1454         list_for_each_entry(data, &hwsim_radios, list) {
1455                 if (memcmp(data->addresses[1].addr, addr,
1456                           sizeof(struct mac_address)) == 0) {
1457                         _found = true;
1458                         break;
1459                 }
1460         }
1461         spin_unlock_bh(&hwsim_radio_lock);
1462
1463         if (!_found)
1464                 return NULL;
1465
1466         return data;
1467 }
1468
1469 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1470                                            struct genl_info *info)
1471 {
1472
1473         struct ieee80211_hdr *hdr;
1474         struct mac80211_hwsim_data *data2;
1475         struct ieee80211_tx_info *txi;
1476         struct hwsim_tx_rate *tx_attempts;
1477         struct sk_buff __user *ret_skb;
1478         struct sk_buff *skb, *tmp;
1479         struct mac_address *src;
1480         unsigned int hwsim_flags;
1481
1482         int i;
1483         bool found = false;
1484
1485         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1486            !info->attrs[HWSIM_ATTR_FLAGS] ||
1487            !info->attrs[HWSIM_ATTR_COOKIE] ||
1488            !info->attrs[HWSIM_ATTR_TX_INFO])
1489                 goto out;
1490
1491         src = (struct mac_address *)nla_data(
1492                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1493         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1494
1495         ret_skb = (struct sk_buff __user *)
1496                   (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1497
1498         data2 = get_hwsim_data_ref_from_addr(src);
1499
1500         if (data2 == NULL)
1501                 goto out;
1502
1503         /* look for the skb matching the cookie passed back from user */
1504         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1505                 if (skb == ret_skb) {
1506                         skb_unlink(skb, &data2->pending);
1507                         found = true;
1508                         break;
1509                 }
1510         }
1511
1512         /* not found */
1513         if (!found)
1514                 goto out;
1515
1516         /* Tx info received because the frame was broadcasted on user space,
1517          so we get all the necessary info: tx attempts and skb control buff */
1518
1519         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1520                        info->attrs[HWSIM_ATTR_TX_INFO]);
1521
1522         /* now send back TX status */
1523         txi = IEEE80211_SKB_CB(skb);
1524
1525         if (txi->control.vif)
1526                 hwsim_check_magic(txi->control.vif);
1527         if (txi->control.sta)
1528                 hwsim_check_sta_magic(txi->control.sta);
1529
1530         ieee80211_tx_info_clear_status(txi);
1531
1532         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1533                 txi->status.rates[i].idx = tx_attempts[i].idx;
1534                 txi->status.rates[i].count = tx_attempts[i].count;
1535                 /*txi->status.rates[i].flags = 0;*/
1536         }
1537
1538         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1539
1540         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1541            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1542                 if (skb->len >= 16) {
1543                         hdr = (struct ieee80211_hdr *) skb->data;
1544                         mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1545                 }
1546         }
1547         ieee80211_tx_status_irqsafe(data2->hw, skb);
1548         return 0;
1549 out:
1550         return -EINVAL;
1551
1552 }
1553
1554 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1555                                           struct genl_info *info)
1556 {
1557
1558         struct mac80211_hwsim_data  *data2;
1559         struct ieee80211_rx_status rx_status;
1560         struct mac_address *dst;
1561         int frame_data_len;
1562         char *frame_data;
1563         struct sk_buff *skb = NULL;
1564
1565         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1566            !info->attrs[HWSIM_ATTR_FRAME] ||
1567            !info->attrs[HWSIM_ATTR_RX_RATE] ||
1568            !info->attrs[HWSIM_ATTR_SIGNAL])
1569                 goto out;
1570
1571         dst = (struct mac_address *)nla_data(
1572                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1573
1574         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1575         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1576
1577         /* Allocate new skb here */
1578         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1579         if (skb == NULL)
1580                 goto err;
1581
1582         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1583                 /* Copy the data */
1584                 memcpy(skb_put(skb, frame_data_len), frame_data,
1585                        frame_data_len);
1586         } else
1587                 goto err;
1588
1589         data2 = get_hwsim_data_ref_from_addr(dst);
1590
1591         if (data2 == NULL)
1592                 goto out;
1593
1594         /* check if radio is configured properly */
1595
1596         if (data2->idle || !data2->started || !data2->channel)
1597                 goto out;
1598
1599         /*A frame is received from user space*/
1600         memset(&rx_status, 0, sizeof(rx_status));
1601         rx_status.freq = data2->channel->center_freq;
1602         rx_status.band = data2->channel->band;
1603         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1604         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1605
1606         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1607         ieee80211_rx_irqsafe(data2->hw, skb);
1608
1609         return 0;
1610 err:
1611         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1612         goto out;
1613 out:
1614         dev_kfree_skb(skb);
1615         return -EINVAL;
1616 }
1617
1618 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1619                                       struct genl_info *info)
1620 {
1621         if (info == NULL)
1622                 goto out;
1623
1624         wmediumd_pid = info->snd_pid;
1625
1626         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1627                "switching to wmediumd mode with pid %d\n", info->snd_pid);
1628
1629         return 0;
1630 out:
1631         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1632         return -EINVAL;
1633 }
1634
1635 /* Generic Netlink operations array */
1636 static struct genl_ops hwsim_ops[] = {
1637         {
1638                 .cmd = HWSIM_CMD_REGISTER,
1639                 .policy = hwsim_genl_policy,
1640                 .doit = hwsim_register_received_nl,
1641                 .flags = GENL_ADMIN_PERM,
1642         },
1643         {
1644                 .cmd = HWSIM_CMD_FRAME,
1645                 .policy = hwsim_genl_policy,
1646                 .doit = hwsim_cloned_frame_received_nl,
1647         },
1648         {
1649                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1650                 .policy = hwsim_genl_policy,
1651                 .doit = hwsim_tx_info_frame_received_nl,
1652         },
1653 };
1654
1655 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1656                                          unsigned long state,
1657                                          void *_notify)
1658 {
1659         struct netlink_notify *notify = _notify;
1660
1661         if (state != NETLINK_URELEASE)
1662                 return NOTIFY_DONE;
1663
1664         if (notify->pid == wmediumd_pid) {
1665                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1666                        " socket, switching to perfect channel medium\n");
1667                 wmediumd_pid = 0;
1668         }
1669         return NOTIFY_DONE;
1670
1671 }
1672
1673 static struct notifier_block hwsim_netlink_notifier = {
1674         .notifier_call = mac80211_hwsim_netlink_notify,
1675 };
1676
1677 static int hwsim_init_netlink(void)
1678 {
1679         int rc;
1680         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1681
1682         rc = genl_register_family_with_ops(&hwsim_genl_family,
1683                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1684         if (rc)
1685                 goto failure;
1686
1687         rc = netlink_register_notifier(&hwsim_netlink_notifier);
1688         if (rc)
1689                 goto failure;
1690
1691         return 0;
1692
1693 failure:
1694         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1695         return -EINVAL;
1696 }
1697
1698 static void hwsim_exit_netlink(void)
1699 {
1700         int ret;
1701
1702         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1703         /* unregister the notifier */
1704         netlink_unregister_notifier(&hwsim_netlink_notifier);
1705         /* unregister the family */
1706         ret = genl_unregister_family(&hwsim_genl_family);
1707         if (ret)
1708                 printk(KERN_DEBUG "mac80211_hwsim: "
1709                        "unregister family %i\n", ret);
1710 }
1711
1712 static int __init init_mac80211_hwsim(void)
1713 {
1714         int i, err = 0;
1715         u8 addr[ETH_ALEN];
1716         struct mac80211_hwsim_data *data;
1717         struct ieee80211_hw *hw;
1718         enum ieee80211_band band;
1719
1720         if (radios < 1 || radios > 100)
1721                 return -EINVAL;
1722
1723         if (fake_hw_scan) {
1724                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1725                 mac80211_hwsim_ops.sw_scan_start = NULL;
1726                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1727         }
1728
1729         spin_lock_init(&hwsim_radio_lock);
1730         INIT_LIST_HEAD(&hwsim_radios);
1731
1732         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1733         if (IS_ERR(hwsim_class))
1734                 return PTR_ERR(hwsim_class);
1735
1736         memset(addr, 0, ETH_ALEN);
1737         addr[0] = 0x02;
1738
1739         for (i = 0; i < radios; i++) {
1740                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1741                        i);
1742                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1743                 if (!hw) {
1744                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1745                                "failed\n");
1746                         err = -ENOMEM;
1747                         goto failed;
1748                 }
1749                 data = hw->priv;
1750                 data->hw = hw;
1751
1752                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1753                                           "hwsim%d", i);
1754                 if (IS_ERR(data->dev)) {
1755                         printk(KERN_DEBUG
1756                                "mac80211_hwsim: device_create "
1757                                "failed (%ld)\n", PTR_ERR(data->dev));
1758                         err = -ENOMEM;
1759                         goto failed_drvdata;
1760                 }
1761                 data->dev->driver = &mac80211_hwsim_driver;
1762                 skb_queue_head_init(&data->pending);
1763
1764                 SET_IEEE80211_DEV(hw, data->dev);
1765                 addr[3] = i >> 8;
1766                 addr[4] = i;
1767                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1768                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1769                 data->addresses[1].addr[0] |= 0x40;
1770                 hw->wiphy->n_addresses = 2;
1771                 hw->wiphy->addresses = data->addresses;
1772
1773                 if (fake_hw_scan) {
1774                         hw->wiphy->max_scan_ssids = 255;
1775                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1776                 }
1777
1778                 hw->channel_change_time = 1;
1779                 hw->queues = 4;
1780                 hw->wiphy->interface_modes =
1781                         BIT(NL80211_IFTYPE_STATION) |
1782                         BIT(NL80211_IFTYPE_AP) |
1783                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1784                         BIT(NL80211_IFTYPE_P2P_GO) |
1785                         BIT(NL80211_IFTYPE_ADHOC) |
1786                         BIT(NL80211_IFTYPE_MESH_POINT);
1787
1788                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1789                             IEEE80211_HW_SIGNAL_DBM |
1790                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1791                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1792                             IEEE80211_HW_AMPDU_AGGREGATION;
1793
1794                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
1795
1796                 /* ask mac80211 to reserve space for magic */
1797                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1798                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1799
1800                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1801                         sizeof(hwsim_channels_2ghz));
1802                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1803                         sizeof(hwsim_channels_5ghz));
1804                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1805
1806                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1807                         struct ieee80211_supported_band *sband = &data->bands[band];
1808                         switch (band) {
1809                         case IEEE80211_BAND_2GHZ:
1810                                 sband->channels = data->channels_2ghz;
1811                                 sband->n_channels =
1812                                         ARRAY_SIZE(hwsim_channels_2ghz);
1813                                 sband->bitrates = data->rates;
1814                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1815                                 break;
1816                         case IEEE80211_BAND_5GHZ:
1817                                 sband->channels = data->channels_5ghz;
1818                                 sband->n_channels =
1819                                         ARRAY_SIZE(hwsim_channels_5ghz);
1820                                 sband->bitrates = data->rates + 4;
1821                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1822                                 break;
1823                         default:
1824                                 break;
1825                         }
1826
1827                         sband->ht_cap.ht_supported = true;
1828                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1829                                 IEEE80211_HT_CAP_GRN_FLD |
1830                                 IEEE80211_HT_CAP_SGI_40 |
1831                                 IEEE80211_HT_CAP_DSSSCCK40;
1832                         sband->ht_cap.ampdu_factor = 0x3;
1833                         sband->ht_cap.ampdu_density = 0x6;
1834                         memset(&sband->ht_cap.mcs, 0,
1835                                sizeof(sband->ht_cap.mcs));
1836                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1837                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1838                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1839
1840                         hw->wiphy->bands[band] = sband;
1841                 }
1842                 /* By default all radios are belonging to the first group */
1843                 data->group = 1;
1844                 mutex_init(&data->mutex);
1845
1846                 /* Enable frame retransmissions for lossy channels */
1847                 hw->max_rates = 4;
1848                 hw->max_rate_tries = 11;
1849
1850                 /* Work to be done prior to ieee80211_register_hw() */
1851                 switch (regtest) {
1852                 case HWSIM_REGTEST_DISABLED:
1853                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1854                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1855                 case HWSIM_REGTEST_DIFF_COUNTRY:
1856                         /*
1857                          * Nothing to be done for driver regulatory domain
1858                          * hints prior to ieee80211_register_hw()
1859                          */
1860                         break;
1861                 case HWSIM_REGTEST_WORLD_ROAM:
1862                         if (i == 0) {
1863                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1864                                 wiphy_apply_custom_regulatory(hw->wiphy,
1865                                         &hwsim_world_regdom_custom_01);
1866                         }
1867                         break;
1868                 case HWSIM_REGTEST_CUSTOM_WORLD:
1869                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1870                         wiphy_apply_custom_regulatory(hw->wiphy,
1871                                 &hwsim_world_regdom_custom_01);
1872                         break;
1873                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1874                         if (i == 0) {
1875                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1876                                 wiphy_apply_custom_regulatory(hw->wiphy,
1877                                         &hwsim_world_regdom_custom_01);
1878                         } else if (i == 1) {
1879                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1880                                 wiphy_apply_custom_regulatory(hw->wiphy,
1881                                         &hwsim_world_regdom_custom_02);
1882                         }
1883                         break;
1884                 case HWSIM_REGTEST_STRICT_ALL:
1885                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1886                         break;
1887                 case HWSIM_REGTEST_STRICT_FOLLOW:
1888                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1889                         if (i == 0)
1890                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1891                         break;
1892                 case HWSIM_REGTEST_ALL:
1893                         if (i == 0) {
1894                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1895                                 wiphy_apply_custom_regulatory(hw->wiphy,
1896                                         &hwsim_world_regdom_custom_01);
1897                         } else if (i == 1) {
1898                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1899                                 wiphy_apply_custom_regulatory(hw->wiphy,
1900                                         &hwsim_world_regdom_custom_02);
1901                         } else if (i == 4)
1902                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1903                         break;
1904                 default:
1905                         break;
1906                 }
1907
1908                 /* give the regulatory workqueue a chance to run */
1909                 if (regtest)
1910                         schedule_timeout_interruptible(1);
1911                 err = ieee80211_register_hw(hw);
1912                 if (err < 0) {
1913                         printk(KERN_DEBUG "mac80211_hwsim: "
1914                                "ieee80211_register_hw failed (%d)\n", err);
1915                         goto failed_hw;
1916                 }
1917
1918                 /* Work to be done after to ieee80211_register_hw() */
1919                 switch (regtest) {
1920                 case HWSIM_REGTEST_WORLD_ROAM:
1921                 case HWSIM_REGTEST_DISABLED:
1922                         break;
1923                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1924                         if (!i)
1925                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1926                         break;
1927                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1928                 case HWSIM_REGTEST_STRICT_ALL:
1929                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1930                         break;
1931                 case HWSIM_REGTEST_DIFF_COUNTRY:
1932                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1933                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1934                         break;
1935                 case HWSIM_REGTEST_CUSTOM_WORLD:
1936                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1937                         /*
1938                          * Nothing to be done for custom world regulatory
1939                          * domains after to ieee80211_register_hw
1940                          */
1941                         break;
1942                 case HWSIM_REGTEST_STRICT_FOLLOW:
1943                         if (i == 0)
1944                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1945                         break;
1946                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1947                         if (i == 0)
1948                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1949                         else if (i == 1)
1950                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1951                         break;
1952                 case HWSIM_REGTEST_ALL:
1953                         if (i == 2)
1954                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1955                         else if (i == 3)
1956                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1957                         else if (i == 4)
1958                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1959                         break;
1960                 default:
1961                         break;
1962                 }
1963
1964                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1965                             hw->wiphy->perm_addr);
1966
1967                 data->debugfs = debugfs_create_dir("hwsim",
1968                                                    hw->wiphy->debugfsdir);
1969                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1970                                                        data->debugfs, data,
1971                                                        &hwsim_fops_ps);
1972                 data->debugfs_group = debugfs_create_file("group", 0666,
1973                                                         data->debugfs, data,
1974                                                         &hwsim_fops_group);
1975
1976                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1977                             (unsigned long) hw);
1978
1979                 list_add_tail(&data->list, &hwsim_radios);
1980         }
1981
1982         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1983         if (hwsim_mon == NULL)
1984                 goto failed;
1985
1986         rtnl_lock();
1987
1988         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1989         if (err < 0)
1990                 goto failed_mon;
1991
1992
1993         err = register_netdevice(hwsim_mon);
1994         if (err < 0)
1995                 goto failed_mon;
1996
1997         rtnl_unlock();
1998
1999         err = hwsim_init_netlink();
2000         if (err < 0)
2001                 goto failed_nl;
2002
2003         return 0;
2004
2005 failed_nl:
2006         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2007         return err;
2008
2009 failed_mon:
2010         rtnl_unlock();
2011         free_netdev(hwsim_mon);
2012         mac80211_hwsim_free();
2013         return err;
2014
2015 failed_hw:
2016         device_unregister(data->dev);
2017 failed_drvdata:
2018         ieee80211_free_hw(hw);
2019 failed:
2020         mac80211_hwsim_free();
2021         return err;
2022 }
2023
2024
2025 static void __exit exit_mac80211_hwsim(void)
2026 {
2027         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2028
2029         hwsim_exit_netlink();
2030
2031         mac80211_hwsim_free();
2032         unregister_netdev(hwsim_mon);
2033 }
2034
2035
2036 module_init(init_mac80211_hwsim);
2037 module_exit(exit_mac80211_hwsim);