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  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 /*
  11  * TODO:
  12  * - Add TSF sync and fix IBSS beacon transmission by adding
  13  *   competition for "air time" at TBTT
  14  * - RX filtering based on filter configuration (data->rx_filter)
  15  */
  16
  17 #include <linux/list.h>
  18 #include <linux/slab.h>
  19 #include <linux/spinlock.h>
  20 #include <net/dst.h>
  21 #include <net/xfrm.h>
  22 #include <net/mac80211.h>
  23 #include <net/ieee80211_radiotap.h>
  24 #include <linux/if_arp.h>
  25 #include <linux/rtnetlink.h>
  26 #include <linux/etherdevice.h>
  27 #include <linux/debugfs.h>
  28
  29 MODULE_AUTHOR("Jouni Malinen");
  30 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  31 MODULE_LICENSE("GPL");
  32
  33 static int radios = 2;
  34 module_param(radios, int, 0444);
  35 MODULE_PARM_DESC(radios, "Number of simulated radios");
  36
  37 static bool fake_hw_scan;
  38 module_param(fake_hw_scan, bool, 0444);
  39 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
  40
  41 /**
  42  * enum hwsim_regtest - the type of regulatory tests we offer
  43  *
  44  * These are the different values you can use for the regtest
  45  * module parameter. This is useful to help test world roaming
  46  * and the driver regulatory_hint() call and combinations of these.
  47  * If you want to do specific alpha2 regulatory domain tests simply
  48  * use the userspace regulatory request as that will be respected as
  49  * well without the need of this module parameter. This is designed
  50  * only for testing the driver regulatory request, world roaming
  51  * and all possible combinations.
  52  *
  53  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  54  *      this is the default value.
  55  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  56  *      hint, only one driver regulatory hint will be sent as such the
  57  *      secondary radios are expected to follow.
  58  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  59  *      request with all radios reporting the same regulatory domain.
  60  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  61  *      different regulatory domains requests. Expected behaviour is for
  62  *      an intersection to occur but each device will still use their
  63  *      respective regulatory requested domains. Subsequent radios will
  64  *      use the resulting intersection.
  65  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
  66  *      this by using a custom beacon-capable regulatory domain for the first
  67  *      radio. All other device world roam.
  68  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  69  *      domain requests. All radios will adhere to this custom world regulatory
  70  *      domain.
  71  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  72  *      domain requests. The first radio will adhere to the first custom world
  73  *      regulatory domain, the second one to the second custom world regulatory
  74  *      domain. All other devices will world roam.
  75  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  76  *      settings, only the first radio will send a regulatory domain request
  77  *      and use strict settings. The rest of the radios are expected to follow.
  78  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  79  *      settings. All radios will adhere to this.
  80  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  81  *      domain settings, combined with secondary driver regulatory domain
  82  *      settings. The first radio will get a strict regulatory domain setting
  83  *      using the first driver regulatory request and the second radio will use
  84  *      non-strict settings using the second driver regulatory request. All
  85  *      other devices should follow the intersection created between the
  86  *      first two.
  87  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  88  *      at least 6 radios for a complete test. We will test in this order:
  89  *      1 - driver custom world regulatory domain
  90  *      2 - second custom world regulatory domain
  91  *      3 - first driver regulatory domain request
  92  *      4 - second driver regulatory domain request
  93  *      5 - strict regulatory domain settings using the third driver regulatory
  94  *          domain request
  95  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
  96  *                 regulatory requests.
  97  */
  98 enum hwsim_regtest {
  99         HWSIM_REGTEST_DISABLED = 0,
 100         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 101         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 102         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 103         HWSIM_REGTEST_WORLD_ROAM = 4,
 104         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 105         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 106         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 107         HWSIM_REGTEST_STRICT_ALL = 8,
 108         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 109         HWSIM_REGTEST_ALL = 10,
 110 };
 111
 112 /* Set to one of the HWSIM_REGTEST_* values above */
 113 static int regtest = HWSIM_REGTEST_DISABLED;
 114 module_param(regtest, int, 0444);
 115 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 116
 117 static const char *hwsim_alpha2s[] = {
 118         "FI",
 119         "AL",
 120         "US",
 121         "DE",
 122         "JP",
 123         "AL",
 124 };
 125
 126 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 127         .n_reg_rules = 4,
 128         .alpha2 =  "99",
 129         .reg_rules = {
 130                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 131                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 132                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 133                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 134         }
 135 };
 136
 137 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 138         .n_reg_rules = 2,
 139         .alpha2 =  "99",
 140         .reg_rules = {
 141                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 142                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 143                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 144         }
 145 };
 146
 147 struct hwsim_vif_priv {
 148         u32 magic;
 149         u8 bssid[ETH_ALEN];
 150         bool assoc;
 151         u16 aid;
 152 };
 153
 154 #define HWSIM_VIF_MAGIC 0x69537748
 155
 156 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 157 {
 158         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 159         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 160 }
 161
 162 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 163 {
 164         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 165         vp->magic = HWSIM_VIF_MAGIC;
 166 }
 167
 168 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 169 {
 170         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 171         vp->magic = 0;
 172 }
 173
 174 struct hwsim_sta_priv {
 175         u32 magic;
 176 };
 177
 178 #define HWSIM_STA_MAGIC 0x6d537748
 179
 180 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 181 {
 182         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 183         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 184 }
 185
 186 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 187 {
 188         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 189         sp->magic = HWSIM_STA_MAGIC;
 190 }
 191
 192 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 193 {
 194         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 195         sp->magic = 0;
 196 }
 197
 198 static struct class *hwsim_class;
 199
 200 static struct net_device *hwsim_mon; /* global monitor netdev */
 201
 202 #define CHAN2G(_freq)  { \
 203         .band = IEEE80211_BAND_2GHZ, \
 204         .center_freq = (_freq), \
 205         .hw_value = (_freq), \
 206         .max_power = 20, \
 207 }
 208
 209 #define CHAN5G(_freq) { \
 210         .band = IEEE80211_BAND_5GHZ, \
 211         .center_freq = (_freq), \
 212         .hw_value = (_freq), \
 213         .max_power = 20, \
 214 }
 215
 216 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 217         CHAN2G(2412), /* Channel 1 */
 218         CHAN2G(2417), /* Channel 2 */
 219         CHAN2G(2422), /* Channel 3 */
 220         CHAN2G(2427), /* Channel 4 */
 221         CHAN2G(2432), /* Channel 5 */
 222         CHAN2G(2437), /* Channel 6 */
 223         CHAN2G(2442), /* Channel 7 */
 224         CHAN2G(2447), /* Channel 8 */
 225         CHAN2G(2452), /* Channel 9 */
 226         CHAN2G(2457), /* Channel 10 */
 227         CHAN2G(2462), /* Channel 11 */
 228         CHAN2G(2467), /* Channel 12 */
 229         CHAN2G(2472), /* Channel 13 */
 230         CHAN2G(2484), /* Channel 14 */
 231 };
 232
 233 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 234         CHAN5G(5180), /* Channel 36 */
 235         CHAN5G(5200), /* Channel 40 */
 236         CHAN5G(5220), /* Channel 44 */
 237         CHAN5G(5240), /* Channel 48 */
 238
 239         CHAN5G(5260), /* Channel 52 */
 240         CHAN5G(5280), /* Channel 56 */
 241         CHAN5G(5300), /* Channel 60 */
 242         CHAN5G(5320), /* Channel 64 */
 243
 244         CHAN5G(5500), /* Channel 100 */
 245         CHAN5G(5520), /* Channel 104 */
 246         CHAN5G(5540), /* Channel 108 */
 247         CHAN5G(5560), /* Channel 112 */
 248         CHAN5G(5580), /* Channel 116 */
 249         CHAN5G(5600), /* Channel 120 */
 250         CHAN5G(5620), /* Channel 124 */
 251         CHAN5G(5640), /* Channel 128 */
 252         CHAN5G(5660), /* Channel 132 */
 253         CHAN5G(5680), /* Channel 136 */
 254         CHAN5G(5700), /* Channel 140 */
 255
 256         CHAN5G(5745), /* Channel 149 */
 257         CHAN5G(5765), /* Channel 153 */
 258         CHAN5G(5785), /* Channel 157 */
 259         CHAN5G(5805), /* Channel 161 */
 260         CHAN5G(5825), /* Channel 165 */
 261 };
 262
 263 static const struct ieee80211_rate hwsim_rates[] = {
 264         { .bitrate = 10 },
 265         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 266         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 267         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 268         { .bitrate = 60 },
 269         { .bitrate = 90 },
 270         { .bitrate = 120 },
 271         { .bitrate = 180 },
 272         { .bitrate = 240 },
 273         { .bitrate = 360 },
 274         { .bitrate = 480 },
 275         { .bitrate = 540 }
 276 };
 277
 278 static spinlock_t hwsim_radio_lock;
 279 static struct list_head hwsim_radios;
 280
 281 struct mac80211_hwsim_data {
 282         struct list_head list;
 283         struct ieee80211_hw *hw;
 284         struct device *dev;
 285         struct ieee80211_supported_band bands[2];
 286         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 287         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 288         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 289
 290         struct mac_address addresses[2];
 291
 292         struct ieee80211_channel *channel;
 293         unsigned long beacon_int; /* in jiffies unit */
 294         unsigned int rx_filter;
 295         bool started, idle, scanning;
 296         struct mutex mutex;
 297         struct timer_list beacon_timer;
 298         enum ps_mode {
 299                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 300         } ps;
 301         bool ps_poll_pending;
 302         struct dentry *debugfs;
 303         struct dentry *debugfs_ps;
 304
 305         /*
 306          * Only radios in the same group can communicate together (the
 307          * channel has to match too). Each bit represents a group. A
 308          * radio can be in more then one group.
 309          */
 310         u64 group;
 311         struct dentry *debugfs_group;
 312 };
 313
 314
 315 struct hwsim_radiotap_hdr {
 316         struct ieee80211_radiotap_header hdr;
 317         u8 rt_flags;
 318         u8 rt_rate;
 319         __le16 rt_channel;
 320         __le16 rt_chbitmask;
 321 } __packed;
 322
 323
 324 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 325                                         struct net_device *dev)
 326 {
 327         /* TODO: allow packet injection */
 328         dev_kfree_skb(skb);
 329         return NETDEV_TX_OK;
 330 }
 331
 332
 333 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 334                                       struct sk_buff *tx_skb)
 335 {
 336         struct mac80211_hwsim_data *data = hw->priv;
 337         struct sk_buff *skb;
 338         struct hwsim_radiotap_hdr *hdr;
 339         u16 flags;
 340         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 341         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 342
 343         if (!netif_running(hwsim_mon))
 344                 return;
 345
 346         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 347         if (skb == NULL)
 348                 return;
 349
 350         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 351         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 352         hdr->hdr.it_pad = 0;
 353         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 354         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 355                                           (1 << IEEE80211_RADIOTAP_RATE) |
 356                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 357         hdr->rt_flags = 0;
 358         hdr->rt_rate = txrate->bitrate / 5;
 359         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 360         flags = IEEE80211_CHAN_2GHZ;
 361         if (txrate->flags & IEEE80211_RATE_ERP_G)
 362                 flags |= IEEE80211_CHAN_OFDM;
 363         else
 364                 flags |= IEEE80211_CHAN_CCK;
 365         hdr->rt_chbitmask = cpu_to_le16(flags);
 366
 367         skb->dev = hwsim_mon;
 368         skb_set_mac_header(skb, 0);
 369         skb->ip_summed = CHECKSUM_UNNECESSARY;
 370         skb->pkt_type = PACKET_OTHERHOST;
 371         skb->protocol = htons(ETH_P_802_2);
 372         memset(skb->cb, 0, sizeof(skb->cb));
 373         netif_rx(skb);
 374 }
 375
 376
 377 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 378 {
 379         struct mac80211_hwsim_data *data = hw->priv;
 380         struct sk_buff *skb;
 381         struct hwsim_radiotap_hdr *hdr;
 382         u16 flags;
 383         struct ieee80211_hdr *hdr11;
 384
 385         if (!netif_running(hwsim_mon))
 386                 return;
 387
 388         skb = dev_alloc_skb(100);
 389         if (skb == NULL)
 390                 return;
 391
 392         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 393         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 394         hdr->hdr.it_pad = 0;
 395         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 396         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 397                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 398         hdr->rt_flags = 0;
 399         hdr->rt_rate = 0;
 400         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 401         flags = IEEE80211_CHAN_2GHZ;
 402         hdr->rt_chbitmask = cpu_to_le16(flags);
 403
 404         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 405         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 406                                            IEEE80211_STYPE_ACK);
 407         hdr11->duration_id = cpu_to_le16(0);
 408         memcpy(hdr11->addr1, addr, ETH_ALEN);
 409
 410         skb->dev = hwsim_mon;
 411         skb_set_mac_header(skb, 0);
 412         skb->ip_summed = CHECKSUM_UNNECESSARY;
 413         skb->pkt_type = PACKET_OTHERHOST;
 414         skb->protocol = htons(ETH_P_802_2);
 415         memset(skb->cb, 0, sizeof(skb->cb));
 416         netif_rx(skb);
 417 }
 418
 419
 420 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 421                            struct sk_buff *skb)
 422 {
 423         switch (data->ps) {
 424         case PS_DISABLED:
 425                 return true;
 426         case PS_ENABLED:
 427                 return false;
 428         case PS_AUTO_POLL:
 429                 /* TODO: accept (some) Beacons by default and other frames only
 430                  * if pending PS-Poll has been sent */
 431                 return true;
 432         case PS_MANUAL_POLL:
 433                 /* Allow unicast frames to own address if there is a pending
 434                  * PS-Poll */
 435                 if (data->ps_poll_pending &&
 436                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 437                            ETH_ALEN) == 0) {
 438                         data->ps_poll_pending = false;
 439                         return true;
 440                 }
 441                 return false;
 442         }
 443
 444         return true;
 445 }
 446
 447
 448 struct mac80211_hwsim_addr_match_data {
 449         bool ret;
 450         const u8 *addr;
 451 };
 452
 453 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 454                                      struct ieee80211_vif *vif)
 455 {
 456         struct mac80211_hwsim_addr_match_data *md = data;
 457         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 458                 md->ret = true;
 459 }
 460
 461
 462 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 463                                       const u8 *addr)
 464 {
 465         struct mac80211_hwsim_addr_match_data md;
 466
 467         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 468                 return true;
 469
 470         md.ret = false;
 471         md.addr = addr;
 472         ieee80211_iterate_active_interfaces_atomic(data->hw,
 473                                                    mac80211_hwsim_addr_iter,
 474                                                    &md);
 475
 476         return md.ret;
 477 }
 478
 479
 480 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 481                                     struct sk_buff *skb)
 482 {
 483         struct mac80211_hwsim_data *data = hw->priv, *data2;
 484         bool ack = false;
 485         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 486         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 487         struct ieee80211_rx_status rx_status;
 488
 489         if (data->idle) {
 490                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 491                 return false;
 492         }
 493
 494         memset(&rx_status, 0, sizeof(rx_status));
 495         /* TODO: set mactime */
 496         rx_status.freq = data->channel->center_freq;
 497         rx_status.band = data->channel->band;
 498         rx_status.rate_idx = info->control.rates[0].idx;
 499         /* TODO: simulate real signal strength (and optional packet loss) */
 500         rx_status.signal = -50;
 501
 502         if (data->ps != PS_DISABLED)
 503                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 504
 505         /* release the skb's source info */
 506         skb_orphan(skb);
 507         skb_dst_drop(skb);
 508         skb->mark = 0;
 509         secpath_reset(skb);
 510         nf_reset(skb);
 511
 512         /* Copy skb to all enabled radios that are on the current frequency */
 513         spin_lock(&hwsim_radio_lock);
 514         list_for_each_entry(data2, &hwsim_radios, list) {
 515                 struct sk_buff *nskb;
 516
 517                 if (data == data2)
 518                         continue;
 519
 520                 if (data2->idle || !data2->started ||
 521                     !hwsim_ps_rx_ok(data2, skb) ||
 522                     !data->channel || !data2->channel ||
 523                     data->channel->center_freq != data2->channel->center_freq ||
 524                     !(data->group & data2->group))
 525                         continue;
 526
 527                 nskb = skb_copy(skb, GFP_ATOMIC);
 528                 if (nskb == NULL)
 529                         continue;
 530
 531                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 532                         ack = true;
 533                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 534                 ieee80211_rx_irqsafe(data2->hw, nskb);
 535         }
 536         spin_unlock(&hwsim_radio_lock);
 537
 538         return ack;
 539 }
 540
 541
 542 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 543 {
 544         bool ack;
 545         struct ieee80211_tx_info *txi;
 546
 547         mac80211_hwsim_monitor_rx(hw, skb);
 548
 549         if (skb->len < 10) {
 550                 /* Should not happen; just a sanity check for addr1 use */
 551                 dev_kfree_skb(skb);
 552                 return NETDEV_TX_OK;
 553         }
 554
 555         ack = mac80211_hwsim_tx_frame(hw, skb);
 556         if (ack && skb->len >= 16) {
 557                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 558                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 559         }
 560
 561         txi = IEEE80211_SKB_CB(skb);
 562
 563         if (txi->control.vif)
 564                 hwsim_check_magic(txi->control.vif);
 565         if (txi->control.sta)
 566                 hwsim_check_sta_magic(txi->control.sta);
 567
 568         ieee80211_tx_info_clear_status(txi);
 569         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 570                 txi->flags |= IEEE80211_TX_STAT_ACK;
 571         ieee80211_tx_status_irqsafe(hw, skb);
 572         return NETDEV_TX_OK;
 573 }
 574
 575
 576 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 577 {
 578         struct mac80211_hwsim_data *data = hw->priv;
 579         wiphy_debug(hw->wiphy, "%s\n", __func__);
 580         data->started = 1;
 581         return 0;
 582 }
 583
 584
 585 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 586 {
 587         struct mac80211_hwsim_data *data = hw->priv;
 588         data->started = 0;
 589         del_timer(&data->beacon_timer);
 590         wiphy_debug(hw->wiphy, "%s\n", __func__);
 591 }
 592
 593
 594 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 595                                         struct ieee80211_vif *vif)
 596 {
 597         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 598                     __func__, ieee80211_vif_type_p2p(vif),
 599                     vif->addr);
 600         hwsim_set_magic(vif);
 601         return 0;
 602 }
 603
 604
 605 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 606                                            struct ieee80211_vif *vif,
 607                                            enum nl80211_iftype newtype,
 608                                            bool newp2p)
 609 {
 610         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 611         wiphy_debug(hw->wiphy,
 612                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 613                     __func__, ieee80211_vif_type_p2p(vif),
 614                     newtype, vif->addr);
 615         hwsim_check_magic(vif);
 616
 617         return 0;
 618 }
 619
 620 static void mac80211_hwsim_remove_interface(
 621         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 622 {
 623         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 624                     __func__, ieee80211_vif_type_p2p(vif),
 625                     vif->addr);
 626         hwsim_check_magic(vif);
 627         hwsim_clear_magic(vif);
 628 }
 629
 630
 631 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 632                                      struct ieee80211_vif *vif)
 633 {
 634         struct ieee80211_hw *hw = arg;
 635         struct sk_buff *skb;
 636         struct ieee80211_tx_info *info;
 637
 638         hwsim_check_magic(vif);
 639
 640         if (vif->type != NL80211_IFTYPE_AP &&
 641             vif->type != NL80211_IFTYPE_MESH_POINT &&
 642             vif->type != NL80211_IFTYPE_ADHOC)
 643                 return;
 644
 645         skb = ieee80211_beacon_get(hw, vif);
 646         if (skb == NULL)
 647                 return;
 648         info = IEEE80211_SKB_CB(skb);
 649
 650         mac80211_hwsim_monitor_rx(hw, skb);
 651         mac80211_hwsim_tx_frame(hw, skb);
 652         dev_kfree_skb(skb);
 653 }
 654
 655
 656 static void mac80211_hwsim_beacon(unsigned long arg)
 657 {
 658         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 659         struct mac80211_hwsim_data *data = hw->priv;
 660
 661         if (!data->started)
 662                 return;
 663
 664         ieee80211_iterate_active_interfaces_atomic(
 665                 hw, mac80211_hwsim_beacon_tx, hw);
 666
 667         data->beacon_timer.expires = jiffies + data->beacon_int;
 668         add_timer(&data->beacon_timer);
 669 }
 670
 671 static const char *hwsim_chantypes[] = {
 672         [NL80211_CHAN_NO_HT] = "noht",
 673         [NL80211_CHAN_HT20] = "ht20",
 674         [NL80211_CHAN_HT40MINUS] = "ht40-",
 675         [NL80211_CHAN_HT40PLUS] = "ht40+",
 676 };
 677
 678 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 679 {
 680         struct mac80211_hwsim_data *data = hw->priv;
 681         struct ieee80211_conf *conf = &hw->conf;
 682         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 683                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 684                 [IEEE80211_SMPS_OFF] = "off",
 685                 [IEEE80211_SMPS_STATIC] = "static",
 686                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 687         };
 688
 689         wiphy_debug(hw->wiphy,
 690                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 691                     __func__,
 692                     conf->channel->center_freq,
 693                     hwsim_chantypes[conf->channel_type],
 694                     !!(conf->flags & IEEE80211_CONF_IDLE),
 695                     !!(conf->flags & IEEE80211_CONF_PS),
 696                     smps_modes[conf->smps_mode]);
 697
 698         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 699
 700         data->channel = conf->channel;
 701         if (!data->started || !data->beacon_int)
 702                 del_timer(&data->beacon_timer);
 703         else
 704                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 705
 706         return 0;
 707 }
 708
 709
 710 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 711                                             unsigned int changed_flags,
 712                                             unsigned int *total_flags,u64 multicast)
 713 {
 714         struct mac80211_hwsim_data *data = hw->priv;
 715
 716         wiphy_debug(hw->wiphy, "%s\n", __func__);
 717
 718         data->rx_filter = 0;
 719         if (*total_flags & FIF_PROMISC_IN_BSS)
 720                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 721         if (*total_flags & FIF_ALLMULTI)
 722                 data->rx_filter |= FIF_ALLMULTI;
 723
 724         *total_flags = data->rx_filter;
 725 }
 726
 727 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 728                                             struct ieee80211_vif *vif,
 729                                             struct ieee80211_bss_conf *info,
 730                                             u32 changed)
 731 {
 732         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 733         struct mac80211_hwsim_data *data = hw->priv;
 734
 735         hwsim_check_magic(vif);
 736
 737         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
 738
 739         if (changed & BSS_CHANGED_BSSID) {
 740                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
 741                             __func__, info->bssid);
 742                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 743         }
 744
 745         if (changed & BSS_CHANGED_ASSOC) {
 746                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
 747                             info->assoc, info->aid);
 748                 vp->assoc = info->assoc;
 749                 vp->aid = info->aid;
 750         }
 751
 752         if (changed & BSS_CHANGED_BEACON_INT) {
 753                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
 754                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 755                 if (WARN_ON(!data->beacon_int))
 756                         data->beacon_int = 1;
 757                 if (data->started)
 758                         mod_timer(&data->beacon_timer,
 759                                   jiffies + data->beacon_int);
 760         }
 761
 762         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 763                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
 764                             info->use_cts_prot);
 765         }
 766
 767         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 768                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
 769                             info->use_short_preamble);
 770         }
 771
 772         if (changed & BSS_CHANGED_ERP_SLOT) {
 773                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
 774         }
 775
 776         if (changed & BSS_CHANGED_HT) {
 777                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
 778                             info->ht_operation_mode,
 779                             hwsim_chantypes[info->channel_type]);
 780         }
 781
 782         if (changed & BSS_CHANGED_BASIC_RATES) {
 783                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
 784                             (unsigned long long) info->basic_rates);
 785         }
 786 }
 787
 788 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 789                                   struct ieee80211_vif *vif,
 790                                   struct ieee80211_sta *sta)
 791 {
 792         hwsim_check_magic(vif);
 793         hwsim_set_sta_magic(sta);
 794
 795         return 0;
 796 }
 797
 798 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 799                                      struct ieee80211_vif *vif,
 800                                      struct ieee80211_sta *sta)
 801 {
 802         hwsim_check_magic(vif);
 803         hwsim_clear_sta_magic(sta);
 804
 805         return 0;
 806 }
 807
 808 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 809                                       struct ieee80211_vif *vif,
 810                                       enum sta_notify_cmd cmd,
 811                                       struct ieee80211_sta *sta)
 812 {
 813         hwsim_check_magic(vif);
 814
 815         switch (cmd) {
 816         case STA_NOTIFY_SLEEP:
 817         case STA_NOTIFY_AWAKE:
 818                 /* TODO: make good use of these flags */
 819                 break;
 820         default:
 821                 WARN(1, "Invalid sta notify: %d\n", cmd);
 822                 break;
 823         }
 824 }
 825
 826 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 827                                   struct ieee80211_sta *sta,
 828                                   bool set)
 829 {
 830         hwsim_check_sta_magic(sta);
 831         return 0;
 832 }
 833
 834 static int mac80211_hwsim_conf_tx(
 835         struct ieee80211_hw *hw, u16 queue,
 836         const struct ieee80211_tx_queue_params *params)
 837 {
 838         wiphy_debug(hw->wiphy,
 839                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
 840                     __func__, queue,
 841                     params->txop, params->cw_min,
 842                     params->cw_max, params->aifs);
 843         return 0;
 844 }
 845
 846 static int mac80211_hwsim_get_survey(
 847         struct ieee80211_hw *hw, int idx,
 848         struct survey_info *survey)
 849 {
 850         struct ieee80211_conf *conf = &hw->conf;
 851
 852         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
 853
 854         if (idx != 0)
 855                 return -ENOENT;
 856
 857         /* Current channel */
 858         survey->channel = conf->channel;
 859
 860         /*
 861          * Magically conjured noise level --- this is only ok for simulated hardware.
 862          *
 863          * A real driver which cannot determine the real channel noise MUST NOT
 864          * report any noise, especially not a magically conjured one :-)
 865          */
 866         survey->filled = SURVEY_INFO_NOISE_DBM;
 867         survey->noise = -92;
 868
 869         return 0;
 870 }
 871
 872 #ifdef CONFIG_NL80211_TESTMODE
 873 /*
 874  * This section contains example code for using netlink
 875  * attributes with the testmode command in nl80211.
 876  */
 877
 878 /* These enums need to be kept in sync with userspace */
 879 enum hwsim_testmode_attr {
 880         __HWSIM_TM_ATTR_INVALID = 0,
 881         HWSIM_TM_ATTR_CMD       = 1,
 882         HWSIM_TM_ATTR_PS        = 2,
 883
 884         /* keep last */
 885         __HWSIM_TM_ATTR_AFTER_LAST,
 886         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
 887 };
 888
 889 enum hwsim_testmode_cmd {
 890         HWSIM_TM_CMD_SET_PS             = 0,
 891         HWSIM_TM_CMD_GET_PS             = 1,
 892 };
 893
 894 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
 895         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
 896         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
 897 };
 898
 899 static int hwsim_fops_ps_write(void *dat, u64 val);
 900
 901 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
 902                                        void *data, int len)
 903 {
 904         struct mac80211_hwsim_data *hwsim = hw->priv;
 905         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
 906         struct sk_buff *skb;
 907         int err, ps;
 908
 909         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
 910                         hwsim_testmode_policy);
 911         if (err)
 912                 return err;
 913
 914         if (!tb[HWSIM_TM_ATTR_CMD])
 915                 return -EINVAL;
 916
 917         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
 918         case HWSIM_TM_CMD_SET_PS:
 919                 if (!tb[HWSIM_TM_ATTR_PS])
 920                         return -EINVAL;
 921                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
 922                 return hwsim_fops_ps_write(hwsim, ps);
 923         case HWSIM_TM_CMD_GET_PS:
 924                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
 925                                                 nla_total_size(sizeof(u32)));
 926                 if (!skb)
 927                         return -ENOMEM;
 928                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
 929                 return cfg80211_testmode_reply(skb);
 930         default:
 931                 return -EOPNOTSUPP;
 932         }
 933
 934  nla_put_failure:
 935         kfree_skb(skb);
 936         return -ENOBUFS;
 937 }
 938 #endif
 939
 940 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
 941                                        struct ieee80211_vif *vif,
 942                                        enum ieee80211_ampdu_mlme_action action,
 943                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 944 {
 945         switch (action) {
 946         case IEEE80211_AMPDU_TX_START:
 947                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 948                 break;
 949         case IEEE80211_AMPDU_TX_STOP:
 950                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 951                 break;
 952         case IEEE80211_AMPDU_TX_OPERATIONAL:
 953                 break;
 954         case IEEE80211_AMPDU_RX_START:
 955         case IEEE80211_AMPDU_RX_STOP:
 956                 break;
 957         default:
 958                 return -EOPNOTSUPP;
 959         }
 960
 961         return 0;
 962 }
 963
 964 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
 965 {
 966         /*
 967          * In this special case, there's nothing we need to
 968          * do because hwsim does transmission synchronously.
 969          * In the future, when it does transmissions via
 970          * userspace, we may need to do something.
 971          */
 972 }
 973
 974 struct hw_scan_done {
 975         struct delayed_work w;
 976         struct ieee80211_hw *hw;
 977 };
 978
 979 static void hw_scan_done(struct work_struct *work)
 980 {
 981         struct hw_scan_done *hsd =
 982                 container_of(work, struct hw_scan_done, w.work);
 983
 984         ieee80211_scan_completed(hsd->hw, false);
 985         kfree(hsd);
 986 }
 987
 988 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
 989                                   struct ieee80211_vif *vif,
 990                                   struct cfg80211_scan_request *req)
 991 {
 992         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
 993         int i;
 994
 995         if (!hsd)
 996                 return -ENOMEM;
 997
 998         hsd->hw = hw;
 999         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1000
1001         printk(KERN_DEBUG "hwsim hw_scan request\n");
1002         for (i = 0; i < req->n_channels; i++)
1003                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1004                         req->channels[i]->center_freq);
1005
1006         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1007
1008         return 0;
1009 }
1010
1011 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1012 {
1013         struct mac80211_hwsim_data *hwsim = hw->priv;
1014
1015         mutex_lock(&hwsim->mutex);
1016
1017         if (hwsim->scanning) {
1018                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1019                 goto out;
1020         }
1021
1022         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1023         hwsim->scanning = true;
1024
1025 out:
1026         mutex_unlock(&hwsim->mutex);
1027 }
1028
1029 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1030 {
1031         struct mac80211_hwsim_data *hwsim = hw->priv;
1032
1033         mutex_lock(&hwsim->mutex);
1034
1035         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1036         hwsim->scanning = false;
1037
1038         mutex_unlock(&hwsim->mutex);
1039 }
1040
1041 static struct ieee80211_ops mac80211_hwsim_ops =
1042 {
1043         .tx = mac80211_hwsim_tx,
1044         .start = mac80211_hwsim_start,
1045         .stop = mac80211_hwsim_stop,
1046         .add_interface = mac80211_hwsim_add_interface,
1047         .change_interface = mac80211_hwsim_change_interface,
1048         .remove_interface = mac80211_hwsim_remove_interface,
1049         .config = mac80211_hwsim_config,
1050         .configure_filter = mac80211_hwsim_configure_filter,
1051         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1052         .sta_add = mac80211_hwsim_sta_add,
1053         .sta_remove = mac80211_hwsim_sta_remove,
1054         .sta_notify = mac80211_hwsim_sta_notify,
1055         .set_tim = mac80211_hwsim_set_tim,
1056         .conf_tx = mac80211_hwsim_conf_tx,
1057         .get_survey = mac80211_hwsim_get_survey,
1058         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1059         .ampdu_action = mac80211_hwsim_ampdu_action,
1060         .sw_scan_start = mac80211_hwsim_sw_scan,
1061         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1062         .flush = mac80211_hwsim_flush,
1063 };
1064
1065
1066 static void mac80211_hwsim_free(void)
1067 {
1068         struct list_head tmplist, *i, *tmp;
1069         struct mac80211_hwsim_data *data, *tmpdata;
1070
1071         INIT_LIST_HEAD(&tmplist);
1072
1073         spin_lock_bh(&hwsim_radio_lock);
1074         list_for_each_safe(i, tmp, &hwsim_radios)
1075                 list_move(i, &tmplist);
1076         spin_unlock_bh(&hwsim_radio_lock);
1077
1078         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1079                 debugfs_remove(data->debugfs_group);
1080                 debugfs_remove(data->debugfs_ps);
1081                 debugfs_remove(data->debugfs);
1082                 ieee80211_unregister_hw(data->hw);
1083                 device_unregister(data->dev);
1084                 ieee80211_free_hw(data->hw);
1085         }
1086         class_destroy(hwsim_class);
1087 }
1088
1089
1090 static struct device_driver mac80211_hwsim_driver = {
1091         .name = "mac80211_hwsim"
1092 };
1093
1094 static const struct net_device_ops hwsim_netdev_ops = {
1095         .ndo_start_xmit         = hwsim_mon_xmit,
1096         .ndo_change_mtu         = eth_change_mtu,
1097         .ndo_set_mac_address    = eth_mac_addr,
1098         .ndo_validate_addr      = eth_validate_addr,
1099 };
1100
1101 static void hwsim_mon_setup(struct net_device *dev)
1102 {
1103         dev->netdev_ops = &hwsim_netdev_ops;
1104         dev->destructor = free_netdev;
1105         ether_setup(dev);
1106         dev->tx_queue_len = 0;
1107         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1108         memset(dev->dev_addr, 0, ETH_ALEN);
1109         dev->dev_addr[0] = 0x12;
1110 }
1111
1112
1113 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1114 {
1115         struct mac80211_hwsim_data *data = dat;
1116         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1117         struct sk_buff *skb;
1118         struct ieee80211_pspoll *pspoll;
1119
1120         if (!vp->assoc)
1121                 return;
1122
1123         wiphy_debug(data->hw->wiphy,
1124                     "%s: send PS-Poll to %pM for aid %d\n",
1125                     __func__, vp->bssid, vp->aid);
1126
1127         skb = dev_alloc_skb(sizeof(*pspoll));
1128         if (!skb)
1129                 return;
1130         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1131         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1132                                             IEEE80211_STYPE_PSPOLL |
1133                                             IEEE80211_FCTL_PM);
1134         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1135         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1136         memcpy(pspoll->ta, mac, ETH_ALEN);
1137         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1138                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1139         dev_kfree_skb(skb);
1140 }
1141
1142
1143 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1144                                 struct ieee80211_vif *vif, int ps)
1145 {
1146         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1147         struct sk_buff *skb;
1148         struct ieee80211_hdr *hdr;
1149
1150         if (!vp->assoc)
1151                 return;
1152
1153         wiphy_debug(data->hw->wiphy,
1154                     "%s: send data::nullfunc to %pM ps=%d\n",
1155                     __func__, vp->bssid, ps);
1156
1157         skb = dev_alloc_skb(sizeof(*hdr));
1158         if (!skb)
1159                 return;
1160         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1161         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1162                                          IEEE80211_STYPE_NULLFUNC |
1163                                          (ps ? IEEE80211_FCTL_PM : 0));
1164         hdr->duration_id = cpu_to_le16(0);
1165         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1166         memcpy(hdr->addr2, mac, ETH_ALEN);
1167         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1168         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1169                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1170         dev_kfree_skb(skb);
1171 }
1172
1173
1174 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1175                                    struct ieee80211_vif *vif)
1176 {
1177         struct mac80211_hwsim_data *data = dat;
1178         hwsim_send_nullfunc(data, mac, vif, 1);
1179 }
1180
1181
1182 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1183                                       struct ieee80211_vif *vif)
1184 {
1185         struct mac80211_hwsim_data *data = dat;
1186         hwsim_send_nullfunc(data, mac, vif, 0);
1187 }
1188
1189
1190 static int hwsim_fops_ps_read(void *dat, u64 *val)
1191 {
1192         struct mac80211_hwsim_data *data = dat;
1193         *val = data->ps;
1194         return 0;
1195 }
1196
1197 static int hwsim_fops_ps_write(void *dat, u64 val)
1198 {
1199         struct mac80211_hwsim_data *data = dat;
1200         enum ps_mode old_ps;
1201
1202         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1203             val != PS_MANUAL_POLL)
1204                 return -EINVAL;
1205
1206         old_ps = data->ps;
1207         data->ps = val;
1208
1209         if (val == PS_MANUAL_POLL) {
1210                 ieee80211_iterate_active_interfaces(data->hw,
1211                                                     hwsim_send_ps_poll, data);
1212                 data->ps_poll_pending = true;
1213         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1214                 ieee80211_iterate_active_interfaces(data->hw,
1215                                                     hwsim_send_nullfunc_ps,
1216                                                     data);
1217         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1218                 ieee80211_iterate_active_interfaces(data->hw,
1219                                                     hwsim_send_nullfunc_no_ps,
1220                                                     data);
1221         }
1222
1223         return 0;
1224 }
1225
1226 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1227                         "%llu\n");
1228
1229
1230 static int hwsim_fops_group_read(void *dat, u64 *val)
1231 {
1232         struct mac80211_hwsim_data *data = dat;
1233         *val = data->group;
1234         return 0;
1235 }
1236
1237 static int hwsim_fops_group_write(void *dat, u64 val)
1238 {
1239         struct mac80211_hwsim_data *data = dat;
1240         data->group = val;
1241         return 0;
1242 }
1243
1244 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1245                         hwsim_fops_group_read, hwsim_fops_group_write,
1246                         "%llx\n");
1247
1248 static int __init init_mac80211_hwsim(void)
1249 {
1250         int i, err = 0;
1251         u8 addr[ETH_ALEN];
1252         struct mac80211_hwsim_data *data;
1253         struct ieee80211_hw *hw;
1254         enum ieee80211_band band;
1255
1256         if (radios < 1 || radios > 100)
1257                 return -EINVAL;
1258
1259         if (fake_hw_scan) {
1260                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1261                 mac80211_hwsim_ops.sw_scan_start = NULL;
1262                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1263         }
1264
1265         spin_lock_init(&hwsim_radio_lock);
1266         INIT_LIST_HEAD(&hwsim_radios);
1267
1268         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1269         if (IS_ERR(hwsim_class))
1270                 return PTR_ERR(hwsim_class);
1271
1272         memset(addr, 0, ETH_ALEN);
1273         addr[0] = 0x02;
1274
1275         for (i = 0; i < radios; i++) {
1276                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1277                        i);
1278                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1279                 if (!hw) {
1280                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1281                                "failed\n");
1282                         err = -ENOMEM;
1283                         goto failed;
1284                 }
1285                 data = hw->priv;
1286                 data->hw = hw;
1287
1288                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1289                                           "hwsim%d", i);
1290                 if (IS_ERR(data->dev)) {
1291                         printk(KERN_DEBUG
1292                                "mac80211_hwsim: device_create "
1293                                "failed (%ld)\n", PTR_ERR(data->dev));
1294                         err = -ENOMEM;
1295                         goto failed_drvdata;
1296                 }
1297                 data->dev->driver = &mac80211_hwsim_driver;
1298
1299                 SET_IEEE80211_DEV(hw, data->dev);
1300                 addr[3] = i >> 8;
1301                 addr[4] = i;
1302                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1303                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1304                 data->addresses[1].addr[0] |= 0x40;
1305                 hw->wiphy->n_addresses = 2;
1306                 hw->wiphy->addresses = data->addresses;
1307
1308                 if (fake_hw_scan) {
1309                         hw->wiphy->max_scan_ssids = 255;
1310                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1311                 }
1312
1313                 hw->channel_change_time = 1;
1314                 hw->queues = 4;
1315                 hw->wiphy->interface_modes =
1316                         BIT(NL80211_IFTYPE_STATION) |
1317                         BIT(NL80211_IFTYPE_AP) |
1318                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1319                         BIT(NL80211_IFTYPE_P2P_GO) |
1320                         BIT(NL80211_IFTYPE_ADHOC) |
1321                         BIT(NL80211_IFTYPE_MESH_POINT);
1322
1323                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1324                             IEEE80211_HW_SIGNAL_DBM |
1325                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1326                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1327                             IEEE80211_HW_AMPDU_AGGREGATION;
1328
1329                 /* ask mac80211 to reserve space for magic */
1330                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1331                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1332
1333                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1334                         sizeof(hwsim_channels_2ghz));
1335                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1336                         sizeof(hwsim_channels_5ghz));
1337                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1338
1339                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1340                         struct ieee80211_supported_band *sband = &data->bands[band];
1341                         switch (band) {
1342                         case IEEE80211_BAND_2GHZ:
1343                                 sband->channels = data->channels_2ghz;
1344                                 sband->n_channels =
1345                                         ARRAY_SIZE(hwsim_channels_2ghz);
1346                                 sband->bitrates = data->rates;
1347                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1348                                 break;
1349                         case IEEE80211_BAND_5GHZ:
1350                                 sband->channels = data->channels_5ghz;
1351                                 sband->n_channels =
1352                                         ARRAY_SIZE(hwsim_channels_5ghz);
1353                                 sband->bitrates = data->rates + 4;
1354                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1355                                 break;
1356                         default:
1357                                 break;
1358                         }
1359
1360                         sband->ht_cap.ht_supported = true;
1361                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1362                                 IEEE80211_HT_CAP_GRN_FLD |
1363                                 IEEE80211_HT_CAP_SGI_40 |
1364                                 IEEE80211_HT_CAP_DSSSCCK40;
1365                         sband->ht_cap.ampdu_factor = 0x3;
1366                         sband->ht_cap.ampdu_density = 0x6;
1367                         memset(&sband->ht_cap.mcs, 0,
1368                                sizeof(sband->ht_cap.mcs));
1369                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1370                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1371                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1372
1373                         hw->wiphy->bands[band] = sband;
1374                 }
1375                 /* By default all radios are belonging to the first group */
1376                 data->group = 1;
1377                 mutex_init(&data->mutex);
1378
1379                 /* Work to be done prior to ieee80211_register_hw() */
1380                 switch (regtest) {
1381                 case HWSIM_REGTEST_DISABLED:
1382                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1383                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1384                 case HWSIM_REGTEST_DIFF_COUNTRY:
1385                         /*
1386                          * Nothing to be done for driver regulatory domain
1387                          * hints prior to ieee80211_register_hw()
1388                          */
1389                         break;
1390                 case HWSIM_REGTEST_WORLD_ROAM:
1391                         if (i == 0) {
1392                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1393                                 wiphy_apply_custom_regulatory(hw->wiphy,
1394                                         &hwsim_world_regdom_custom_01);
1395                         }
1396                         break;
1397                 case HWSIM_REGTEST_CUSTOM_WORLD:
1398                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1399                         wiphy_apply_custom_regulatory(hw->wiphy,
1400                                 &hwsim_world_regdom_custom_01);
1401                         break;
1402                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1403                         if (i == 0) {
1404                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1405                                 wiphy_apply_custom_regulatory(hw->wiphy,
1406                                         &hwsim_world_regdom_custom_01);
1407                         } else if (i == 1) {
1408                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1409                                 wiphy_apply_custom_regulatory(hw->wiphy,
1410                                         &hwsim_world_regdom_custom_02);
1411                         }
1412                         break;
1413                 case HWSIM_REGTEST_STRICT_ALL:
1414                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1415                         break;
1416                 case HWSIM_REGTEST_STRICT_FOLLOW:
1417                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1418                         if (i == 0)
1419                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1420                         break;
1421                 case HWSIM_REGTEST_ALL:
1422                         if (i == 0) {
1423                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1424                                 wiphy_apply_custom_regulatory(hw->wiphy,
1425                                         &hwsim_world_regdom_custom_01);
1426                         } else if (i == 1) {
1427                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1428                                 wiphy_apply_custom_regulatory(hw->wiphy,
1429                                         &hwsim_world_regdom_custom_02);
1430                         } else if (i == 4)
1431                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1432                         break;
1433                 default:
1434                         break;
1435                 }
1436
1437                 /* give the regulatory workqueue a chance to run */
1438                 if (regtest)
1439                         schedule_timeout_interruptible(1);
1440                 err = ieee80211_register_hw(hw);
1441                 if (err < 0) {
1442                         printk(KERN_DEBUG "mac80211_hwsim: "
1443                                "ieee80211_register_hw failed (%d)\n", err);
1444                         goto failed_hw;
1445                 }
1446
1447                 /* Work to be done after to ieee80211_register_hw() */
1448                 switch (regtest) {
1449                 case HWSIM_REGTEST_WORLD_ROAM:
1450                 case HWSIM_REGTEST_DISABLED:
1451                         break;
1452                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1453                         if (!i)
1454                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1455                         break;
1456                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1457                 case HWSIM_REGTEST_STRICT_ALL:
1458                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1459                         break;
1460                 case HWSIM_REGTEST_DIFF_COUNTRY:
1461                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1462                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1463                         break;
1464                 case HWSIM_REGTEST_CUSTOM_WORLD:
1465                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1466                         /*
1467                          * Nothing to be done for custom world regulatory
1468                          * domains after to ieee80211_register_hw
1469                          */
1470                         break;
1471                 case HWSIM_REGTEST_STRICT_FOLLOW:
1472                         if (i == 0)
1473                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1474                         break;
1475                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1476                         if (i == 0)
1477                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1478                         else if (i == 1)
1479                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1480                         break;
1481                 case HWSIM_REGTEST_ALL:
1482                         if (i == 2)
1483                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1484                         else if (i == 3)
1485                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1486                         else if (i == 4)
1487                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1488                         break;
1489                 default:
1490                         break;
1491                 }
1492
1493                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1494                             hw->wiphy->perm_addr);
1495
1496                 data->debugfs = debugfs_create_dir("hwsim",
1497                                                    hw->wiphy->debugfsdir);
1498                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1499                                                        data->debugfs, data,
1500                                                        &hwsim_fops_ps);
1501                 data->debugfs_group = debugfs_create_file("group", 0666,
1502                                                         data->debugfs, data,
1503                                                         &hwsim_fops_group);
1504
1505                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1506                             (unsigned long) hw);
1507
1508                 list_add_tail(&data->list, &hwsim_radios);
1509         }
1510
1511         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1512         if (hwsim_mon == NULL)
1513                 goto failed;
1514
1515         rtnl_lock();
1516
1517         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1518         if (err < 0)
1519                 goto failed_mon;
1520
1521
1522         err = register_netdevice(hwsim_mon);
1523         if (err < 0)
1524                 goto failed_mon;
1525
1526         rtnl_unlock();
1527
1528         return 0;
1529
1530 failed_mon:
1531         rtnl_unlock();
1532         free_netdev(hwsim_mon);
1533         mac80211_hwsim_free();
1534         return err;
1535
1536 failed_hw:
1537         device_unregister(data->dev);
1538 failed_drvdata:
1539         ieee80211_free_hw(hw);
1540 failed:
1541         mac80211_hwsim_free();
1542         return err;
1543 }
1544
1545
1546 static void __exit exit_mac80211_hwsim(void)
1547 {
1548         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1549
1550         mac80211_hwsim_free();
1551         unregister_netdev(hwsim_mon);
1552 }
1553
1554
1555 module_init(init_mac80211_hwsim);
1556 module_exit(exit_mac80211_hwsim);