SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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  * - IBSS mode simulation (Beacon transmission with competition for "air time")
  13  * - RX filtering based on filter configuration (data->rx_filter)
  14  */
  15
  16 #include <linux/list.h>
  17 #include <linux/spinlock.h>
  18 #include <net/dst.h>
  19 #include <net/xfrm.h>
  20 #include <net/mac80211.h>
  21 #include <net/ieee80211_radiotap.h>
  22 #include <linux/if_arp.h>
  23 #include <linux/rtnetlink.h>
  24 #include <linux/etherdevice.h>
  25 #include <linux/debugfs.h>
  26
  27 MODULE_AUTHOR("Jouni Malinen");
  28 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  29 MODULE_LICENSE("GPL");
  30
  31 static int radios = 2;
  32 module_param(radios, int, 0444);
  33 MODULE_PARM_DESC(radios, "Number of simulated radios");
  34
  35 static bool fake_hw_scan;
  36 module_param(fake_hw_scan, bool, 0444);
  37 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
  38
  39 /**
  40  * enum hwsim_regtest - the type of regulatory tests we offer
  41  *
  42  * These are the different values you can use for the regtest
  43  * module parameter. This is useful to help test world roaming
  44  * and the driver regulatory_hint() call and combinations of these.
  45  * If you want to do specific alpha2 regulatory domain tests simply
  46  * use the userspace regulatory request as that will be respected as
  47  * well without the need of this module parameter. This is designed
  48  * only for testing the driver regulatory request, world roaming
  49  * and all possible combinations.
  50  *
  51  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  52  *      this is the default value.
  53  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  54  *      hint, only one driver regulatory hint will be sent as such the
  55  *      secondary radios are expected to follow.
  56  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  57  *      request with all radios reporting the same regulatory domain.
  58  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  59  *      different regulatory domains requests. Expected behaviour is for
  60  *      an intersection to occur but each device will still use their
  61  *      respective regulatory requested domains. Subsequent radios will
  62  *      use the resulting intersection.
  63  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
  64  *      this by using a custom beacon-capable regulatory domain for the first
  65  *      radio. All other device world roam.
  66  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  67  *      domain requests. All radios will adhere to this custom world regulatory
  68  *      domain.
  69  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  70  *      domain requests. The first radio will adhere to the first custom world
  71  *      regulatory domain, the second one to the second custom world regulatory
  72  *      domain. All other devices will world roam.
  73  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  74  *      settings, only the first radio will send a regulatory domain request
  75  *      and use strict settings. The rest of the radios are expected to follow.
  76  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  77  *      settings. All radios will adhere to this.
  78  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  79  *      domain settings, combined with secondary driver regulatory domain
  80  *      settings. The first radio will get a strict regulatory domain setting
  81  *      using the first driver regulatory request and the second radio will use
  82  *      non-strict settings using the second driver regulatory request. All
  83  *      other devices should follow the intersection created between the
  84  *      first two.
  85  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  86  *      at least 6 radios for a complete test. We will test in this order:
  87  *      1 - driver custom world regulatory domain
  88  *      2 - second custom world regulatory domain
  89  *      3 - first driver regulatory domain request
  90  *      4 - second driver regulatory domain request
  91  *      5 - strict regulatory domain settings using the third driver regulatory
  92  *          domain request
  93  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
  94  *                 regulatory requests.
  95  */
  96 enum hwsim_regtest {
  97         HWSIM_REGTEST_DISABLED = 0,
  98         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
  99         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 100         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 101         HWSIM_REGTEST_WORLD_ROAM = 4,
 102         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 103         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 104         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 105         HWSIM_REGTEST_STRICT_ALL = 8,
 106         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 107         HWSIM_REGTEST_ALL = 10,
 108 };
 109
 110 /* Set to one of the HWSIM_REGTEST_* values above */
 111 static int regtest = HWSIM_REGTEST_DISABLED;
 112 module_param(regtest, int, 0444);
 113 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 114
 115 static const char *hwsim_alpha2s[] = {
 116         "FI",
 117         "AL",
 118         "US",
 119         "DE",
 120         "JP",
 121         "AL",
 122 };
 123
 124 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 125         .n_reg_rules = 4,
 126         .alpha2 =  "99",
 127         .reg_rules = {
 128                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 129                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 130                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 131                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 132         }
 133 };
 134
 135 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 136         .n_reg_rules = 2,
 137         .alpha2 =  "99",
 138         .reg_rules = {
 139                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 140                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 141                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 142         }
 143 };
 144
 145 struct hwsim_vif_priv {
 146         u32 magic;
 147         u8 bssid[ETH_ALEN];
 148         bool assoc;
 149         u16 aid;
 150 };
 151
 152 #define HWSIM_VIF_MAGIC 0x69537748
 153
 154 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 155 {
 156         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 157         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 158 }
 159
 160 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 161 {
 162         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 163         vp->magic = HWSIM_VIF_MAGIC;
 164 }
 165
 166 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 167 {
 168         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 169         vp->magic = 0;
 170 }
 171
 172 struct hwsim_sta_priv {
 173         u32 magic;
 174 };
 175
 176 #define HWSIM_STA_MAGIC 0x6d537748
 177
 178 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 179 {
 180         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 181         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 182 }
 183
 184 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 185 {
 186         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 187         sp->magic = HWSIM_STA_MAGIC;
 188 }
 189
 190 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 191 {
 192         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 193         sp->magic = 0;
 194 }
 195
 196 static struct class *hwsim_class;
 197
 198 static struct net_device *hwsim_mon; /* global monitor netdev */
 199
 200 #define CHAN2G(_freq)  { \
 201         .band = IEEE80211_BAND_2GHZ, \
 202         .center_freq = (_freq), \
 203         .hw_value = (_freq), \
 204         .max_power = 20, \
 205 }
 206
 207 #define CHAN5G(_freq) { \
 208         .band = IEEE80211_BAND_5GHZ, \
 209         .center_freq = (_freq), \
 210         .hw_value = (_freq), \
 211         .max_power = 20, \
 212 }
 213
 214 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 215         CHAN2G(2412), /* Channel 1 */
 216         CHAN2G(2417), /* Channel 2 */
 217         CHAN2G(2422), /* Channel 3 */
 218         CHAN2G(2427), /* Channel 4 */
 219         CHAN2G(2432), /* Channel 5 */
 220         CHAN2G(2437), /* Channel 6 */
 221         CHAN2G(2442), /* Channel 7 */
 222         CHAN2G(2447), /* Channel 8 */
 223         CHAN2G(2452), /* Channel 9 */
 224         CHAN2G(2457), /* Channel 10 */
 225         CHAN2G(2462), /* Channel 11 */
 226         CHAN2G(2467), /* Channel 12 */
 227         CHAN2G(2472), /* Channel 13 */
 228         CHAN2G(2484), /* Channel 14 */
 229 };
 230
 231 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 232         CHAN5G(5180), /* Channel 36 */
 233         CHAN5G(5200), /* Channel 40 */
 234         CHAN5G(5220), /* Channel 44 */
 235         CHAN5G(5240), /* Channel 48 */
 236
 237         CHAN5G(5260), /* Channel 52 */
 238         CHAN5G(5280), /* Channel 56 */
 239         CHAN5G(5300), /* Channel 60 */
 240         CHAN5G(5320), /* Channel 64 */
 241
 242         CHAN5G(5500), /* Channel 100 */
 243         CHAN5G(5520), /* Channel 104 */
 244         CHAN5G(5540), /* Channel 108 */
 245         CHAN5G(5560), /* Channel 112 */
 246         CHAN5G(5580), /* Channel 116 */
 247         CHAN5G(5600), /* Channel 120 */
 248         CHAN5G(5620), /* Channel 124 */
 249         CHAN5G(5640), /* Channel 128 */
 250         CHAN5G(5660), /* Channel 132 */
 251         CHAN5G(5680), /* Channel 136 */
 252         CHAN5G(5700), /* Channel 140 */
 253
 254         CHAN5G(5745), /* Channel 149 */
 255         CHAN5G(5765), /* Channel 153 */
 256         CHAN5G(5785), /* Channel 157 */
 257         CHAN5G(5805), /* Channel 161 */
 258         CHAN5G(5825), /* Channel 165 */
 259 };
 260
 261 static const struct ieee80211_rate hwsim_rates[] = {
 262         { .bitrate = 10 },
 263         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 264         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 265         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 266         { .bitrate = 60 },
 267         { .bitrate = 90 },
 268         { .bitrate = 120 },
 269         { .bitrate = 180 },
 270         { .bitrate = 240 },
 271         { .bitrate = 360 },
 272         { .bitrate = 480 },
 273         { .bitrate = 540 }
 274 };
 275
 276 static spinlock_t hwsim_radio_lock;
 277 static struct list_head hwsim_radios;
 278
 279 struct mac80211_hwsim_data {
 280         struct list_head list;
 281         struct ieee80211_hw *hw;
 282         struct device *dev;
 283         struct ieee80211_supported_band bands[2];
 284         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 285         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 286         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 287
 288         struct mac_address addresses[2];
 289
 290         struct ieee80211_channel *channel;
 291         unsigned long beacon_int; /* in jiffies unit */
 292         unsigned int rx_filter;
 293         bool started, idle, scanning;
 294         struct mutex mutex;
 295         struct timer_list beacon_timer;
 296         enum ps_mode {
 297                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 298         } ps;
 299         bool ps_poll_pending;
 300         struct dentry *debugfs;
 301         struct dentry *debugfs_ps;
 302
 303         /*
 304          * Only radios in the same group can communicate together (the
 305          * channel has to match too). Each bit represents a group. A
 306          * radio can be in more then one group.
 307          */
 308         u64 group;
 309         struct dentry *debugfs_group;
 310 };
 311
 312
 313 struct hwsim_radiotap_hdr {
 314         struct ieee80211_radiotap_header hdr;
 315         u8 rt_flags;
 316         u8 rt_rate;
 317         __le16 rt_channel;
 318         __le16 rt_chbitmask;
 319 } __attribute__ ((packed));
 320
 321
 322 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 323                                         struct net_device *dev)
 324 {
 325         /* TODO: allow packet injection */
 326         dev_kfree_skb(skb);
 327         return NETDEV_TX_OK;
 328 }
 329
 330
 331 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 332                                       struct sk_buff *tx_skb)
 333 {
 334         struct mac80211_hwsim_data *data = hw->priv;
 335         struct sk_buff *skb;
 336         struct hwsim_radiotap_hdr *hdr;
 337         u16 flags;
 338         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 339         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 340
 341         if (!netif_running(hwsim_mon))
 342                 return;
 343
 344         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 345         if (skb == NULL)
 346                 return;
 347
 348         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 349         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 350         hdr->hdr.it_pad = 0;
 351         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 352         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 353                                           (1 << IEEE80211_RADIOTAP_RATE) |
 354                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 355         hdr->rt_flags = 0;
 356         hdr->rt_rate = txrate->bitrate / 5;
 357         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 358         flags = IEEE80211_CHAN_2GHZ;
 359         if (txrate->flags & IEEE80211_RATE_ERP_G)
 360                 flags |= IEEE80211_CHAN_OFDM;
 361         else
 362                 flags |= IEEE80211_CHAN_CCK;
 363         hdr->rt_chbitmask = cpu_to_le16(flags);
 364
 365         skb->dev = hwsim_mon;
 366         skb_set_mac_header(skb, 0);
 367         skb->ip_summed = CHECKSUM_UNNECESSARY;
 368         skb->pkt_type = PACKET_OTHERHOST;
 369         skb->protocol = htons(ETH_P_802_2);
 370         memset(skb->cb, 0, sizeof(skb->cb));
 371         netif_rx(skb);
 372 }
 373
 374
 375 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 376 {
 377         struct mac80211_hwsim_data *data = hw->priv;
 378         struct sk_buff *skb;
 379         struct hwsim_radiotap_hdr *hdr;
 380         u16 flags;
 381         struct ieee80211_hdr *hdr11;
 382
 383         if (!netif_running(hwsim_mon))
 384                 return;
 385
 386         skb = dev_alloc_skb(100);
 387         if (skb == NULL)
 388                 return;
 389
 390         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 391         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 392         hdr->hdr.it_pad = 0;
 393         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 394         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 395                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 396         hdr->rt_flags = 0;
 397         hdr->rt_rate = 0;
 398         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 399         flags = IEEE80211_CHAN_2GHZ;
 400         hdr->rt_chbitmask = cpu_to_le16(flags);
 401
 402         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 403         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 404                                            IEEE80211_STYPE_ACK);
 405         hdr11->duration_id = cpu_to_le16(0);
 406         memcpy(hdr11->addr1, addr, ETH_ALEN);
 407
 408         skb->dev = hwsim_mon;
 409         skb_set_mac_header(skb, 0);
 410         skb->ip_summed = CHECKSUM_UNNECESSARY;
 411         skb->pkt_type = PACKET_OTHERHOST;
 412         skb->protocol = htons(ETH_P_802_2);
 413         memset(skb->cb, 0, sizeof(skb->cb));
 414         netif_rx(skb);
 415 }
 416
 417
 418 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 419                            struct sk_buff *skb)
 420 {
 421         switch (data->ps) {
 422         case PS_DISABLED:
 423                 return true;
 424         case PS_ENABLED:
 425                 return false;
 426         case PS_AUTO_POLL:
 427                 /* TODO: accept (some) Beacons by default and other frames only
 428                  * if pending PS-Poll has been sent */
 429                 return true;
 430         case PS_MANUAL_POLL:
 431                 /* Allow unicast frames to own address if there is a pending
 432                  * PS-Poll */
 433                 if (data->ps_poll_pending &&
 434                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 435                            ETH_ALEN) == 0) {
 436                         data->ps_poll_pending = false;
 437                         return true;
 438                 }
 439                 return false;
 440         }
 441
 442         return true;
 443 }
 444
 445
 446 struct mac80211_hwsim_addr_match_data {
 447         bool ret;
 448         const u8 *addr;
 449 };
 450
 451 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 452                                      struct ieee80211_vif *vif)
 453 {
 454         struct mac80211_hwsim_addr_match_data *md = data;
 455         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 456                 md->ret = true;
 457 }
 458
 459
 460 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 461                                       const u8 *addr)
 462 {
 463         struct mac80211_hwsim_addr_match_data md;
 464
 465         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 466                 return true;
 467
 468         md.ret = false;
 469         md.addr = addr;
 470         ieee80211_iterate_active_interfaces_atomic(data->hw,
 471                                                    mac80211_hwsim_addr_iter,
 472                                                    &md);
 473
 474         return md.ret;
 475 }
 476
 477
 478 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 479                                     struct sk_buff *skb)
 480 {
 481         struct mac80211_hwsim_data *data = hw->priv, *data2;
 482         bool ack = false;
 483         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 484         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 485         struct ieee80211_rx_status rx_status;
 486
 487         if (data->idle) {
 488                 printk(KERN_DEBUG "%s: Trying to TX when idle - reject\n",
 489                        wiphy_name(hw->wiphy));
 490                 return false;
 491         }
 492
 493         memset(&rx_status, 0, sizeof(rx_status));
 494         /* TODO: set mactime */
 495         rx_status.freq = data->channel->center_freq;
 496         rx_status.band = data->channel->band;
 497         rx_status.rate_idx = info->control.rates[0].idx;
 498         /* TODO: simulate real signal strength (and optional packet loss) */
 499         rx_status.signal = -50;
 500
 501         if (data->ps != PS_DISABLED)
 502                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 503
 504         /* release the skb's source info */
 505         skb_orphan(skb);
 506         skb_dst_drop(skb);
 507         skb->mark = 0;
 508         secpath_reset(skb);
 509         nf_reset(skb);
 510
 511         /* Copy skb to all enabled radios that are on the current frequency */
 512         spin_lock(&hwsim_radio_lock);
 513         list_for_each_entry(data2, &hwsim_radios, list) {
 514                 struct sk_buff *nskb;
 515
 516                 if (data == data2)
 517                         continue;
 518
 519                 if (data2->idle || !data2->started ||
 520                     !hwsim_ps_rx_ok(data2, skb) ||
 521                     !data->channel || !data2->channel ||
 522                     data->channel->center_freq != data2->channel->center_freq ||
 523                     !(data->group & data2->group))
 524                         continue;
 525
 526                 nskb = skb_copy(skb, GFP_ATOMIC);
 527                 if (nskb == NULL)
 528                         continue;
 529
 530                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 531                         ack = true;
 532                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 533                 ieee80211_rx_irqsafe(data2->hw, nskb);
 534         }
 535         spin_unlock(&hwsim_radio_lock);
 536
 537         return ack;
 538 }
 539
 540
 541 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 542 {
 543         bool ack;
 544         struct ieee80211_tx_info *txi;
 545
 546         mac80211_hwsim_monitor_rx(hw, skb);
 547
 548         if (skb->len < 10) {
 549                 /* Should not happen; just a sanity check for addr1 use */
 550                 dev_kfree_skb(skb);
 551                 return NETDEV_TX_OK;
 552         }
 553
 554         ack = mac80211_hwsim_tx_frame(hw, skb);
 555         if (ack && skb->len >= 16) {
 556                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 557                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 558         }
 559
 560         txi = IEEE80211_SKB_CB(skb);
 561
 562         if (txi->control.vif)
 563                 hwsim_check_magic(txi->control.vif);
 564         if (txi->control.sta)
 565                 hwsim_check_sta_magic(txi->control.sta);
 566
 567         ieee80211_tx_info_clear_status(txi);
 568         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 569                 txi->flags |= IEEE80211_TX_STAT_ACK;
 570         ieee80211_tx_status_irqsafe(hw, skb);
 571         return NETDEV_TX_OK;
 572 }
 573
 574
 575 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 576 {
 577         struct mac80211_hwsim_data *data = hw->priv;
 578         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 579         data->started = 1;
 580         return 0;
 581 }
 582
 583
 584 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 585 {
 586         struct mac80211_hwsim_data *data = hw->priv;
 587         data->started = 0;
 588         del_timer(&data->beacon_timer);
 589         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 590 }
 591
 592
 593 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 594                                         struct ieee80211_vif *vif)
 595 {
 596         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 597                wiphy_name(hw->wiphy), __func__, vif->type,
 598                vif->addr);
 599         hwsim_set_magic(vif);
 600         return 0;
 601 }
 602
 603
 604 static void mac80211_hwsim_remove_interface(
 605         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 606 {
 607         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 608                wiphy_name(hw->wiphy), __func__, vif->type,
 609                vif->addr);
 610         hwsim_check_magic(vif);
 611         hwsim_clear_magic(vif);
 612 }
 613
 614
 615 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 616                                      struct ieee80211_vif *vif)
 617 {
 618         struct ieee80211_hw *hw = arg;
 619         struct sk_buff *skb;
 620         struct ieee80211_tx_info *info;
 621
 622         hwsim_check_magic(vif);
 623
 624         if (vif->type != NL80211_IFTYPE_AP &&
 625             vif->type != NL80211_IFTYPE_MESH_POINT)
 626                 return;
 627
 628         skb = ieee80211_beacon_get(hw, vif);
 629         if (skb == NULL)
 630                 return;
 631         info = IEEE80211_SKB_CB(skb);
 632
 633         mac80211_hwsim_monitor_rx(hw, skb);
 634         mac80211_hwsim_tx_frame(hw, skb);
 635         dev_kfree_skb(skb);
 636 }
 637
 638
 639 static void mac80211_hwsim_beacon(unsigned long arg)
 640 {
 641         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 642         struct mac80211_hwsim_data *data = hw->priv;
 643
 644         if (!data->started)
 645                 return;
 646
 647         ieee80211_iterate_active_interfaces_atomic(
 648                 hw, mac80211_hwsim_beacon_tx, hw);
 649
 650         data->beacon_timer.expires = jiffies + data->beacon_int;
 651         add_timer(&data->beacon_timer);
 652 }
 653
 654 static const char *hwsim_chantypes[] = {
 655         [NL80211_CHAN_NO_HT] = "noht",
 656         [NL80211_CHAN_HT20] = "ht20",
 657         [NL80211_CHAN_HT40MINUS] = "ht40-",
 658         [NL80211_CHAN_HT40PLUS] = "ht40+",
 659 };
 660
 661 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 662 {
 663         struct mac80211_hwsim_data *data = hw->priv;
 664         struct ieee80211_conf *conf = &hw->conf;
 665         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 666                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 667                 [IEEE80211_SMPS_OFF] = "off",
 668                 [IEEE80211_SMPS_STATIC] = "static",
 669                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 670         };
 671
 672         printk(KERN_DEBUG "%s:%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 673                wiphy_name(hw->wiphy), __func__,
 674                conf->channel->center_freq,
 675                hwsim_chantypes[conf->channel_type],
 676                !!(conf->flags & IEEE80211_CONF_IDLE),
 677                !!(conf->flags & IEEE80211_CONF_PS),
 678                smps_modes[conf->smps_mode]);
 679
 680         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 681
 682         data->channel = conf->channel;
 683         if (!data->started || !data->beacon_int)
 684                 del_timer(&data->beacon_timer);
 685         else
 686                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 687
 688         return 0;
 689 }
 690
 691
 692 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 693                                             unsigned int changed_flags,
 694                                             unsigned int *total_flags,u64 multicast)
 695 {
 696         struct mac80211_hwsim_data *data = hw->priv;
 697
 698         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 699
 700         data->rx_filter = 0;
 701         if (*total_flags & FIF_PROMISC_IN_BSS)
 702                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 703         if (*total_flags & FIF_ALLMULTI)
 704                 data->rx_filter |= FIF_ALLMULTI;
 705
 706         *total_flags = data->rx_filter;
 707 }
 708
 709 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 710                                             struct ieee80211_vif *vif,
 711                                             struct ieee80211_bss_conf *info,
 712                                             u32 changed)
 713 {
 714         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 715         struct mac80211_hwsim_data *data = hw->priv;
 716
 717         hwsim_check_magic(vif);
 718
 719         printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
 720                wiphy_name(hw->wiphy), __func__, changed);
 721
 722         if (changed & BSS_CHANGED_BSSID) {
 723                 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
 724                        wiphy_name(hw->wiphy), __func__,
 725                        info->bssid);
 726                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 727         }
 728
 729         if (changed & BSS_CHANGED_ASSOC) {
 730                 printk(KERN_DEBUG "  %s: ASSOC: assoc=%d aid=%d\n",
 731                        wiphy_name(hw->wiphy), info->assoc, info->aid);
 732                 vp->assoc = info->assoc;
 733                 vp->aid = info->aid;
 734         }
 735
 736         if (changed & BSS_CHANGED_BEACON_INT) {
 737                 printk(KERN_DEBUG "  %s: BCNINT: %d\n",
 738                        wiphy_name(hw->wiphy), info->beacon_int);
 739                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 740                 if (WARN_ON(!data->beacon_int))
 741                         data->beacon_int = 1;
 742                 if (data->started)
 743                         mod_timer(&data->beacon_timer,
 744                                   jiffies + data->beacon_int);
 745         }
 746
 747         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 748                 printk(KERN_DEBUG "  %s: ERP_CTS_PROT: %d\n",
 749                        wiphy_name(hw->wiphy), info->use_cts_prot);
 750         }
 751
 752         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 753                 printk(KERN_DEBUG "  %s: ERP_PREAMBLE: %d\n",
 754                        wiphy_name(hw->wiphy), info->use_short_preamble);
 755         }
 756
 757         if (changed & BSS_CHANGED_ERP_SLOT) {
 758                 printk(KERN_DEBUG "  %s: ERP_SLOT: %d\n",
 759                        wiphy_name(hw->wiphy), info->use_short_slot);
 760         }
 761
 762         if (changed & BSS_CHANGED_HT) {
 763                 printk(KERN_DEBUG "  %s: HT: op_mode=0x%x, chantype=%s\n",
 764                        wiphy_name(hw->wiphy),
 765                        info->ht_operation_mode,
 766                        hwsim_chantypes[info->channel_type]);
 767         }
 768
 769         if (changed & BSS_CHANGED_BASIC_RATES) {
 770                 printk(KERN_DEBUG "  %s: BASIC_RATES: 0x%llx\n",
 771                        wiphy_name(hw->wiphy),
 772                        (unsigned long long) info->basic_rates);
 773         }
 774 }
 775
 776 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 777                                   struct ieee80211_vif *vif,
 778                                   struct ieee80211_sta *sta)
 779 {
 780         hwsim_check_magic(vif);
 781         hwsim_set_sta_magic(sta);
 782
 783         return 0;
 784 }
 785
 786 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 787                                      struct ieee80211_vif *vif,
 788                                      struct ieee80211_sta *sta)
 789 {
 790         hwsim_check_magic(vif);
 791         hwsim_clear_sta_magic(sta);
 792
 793         return 0;
 794 }
 795
 796 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 797                                       struct ieee80211_vif *vif,
 798                                       enum sta_notify_cmd cmd,
 799                                       struct ieee80211_sta *sta)
 800 {
 801         hwsim_check_magic(vif);
 802
 803         switch (cmd) {
 804         case STA_NOTIFY_SLEEP:
 805         case STA_NOTIFY_AWAKE:
 806                 /* TODO: make good use of these flags */
 807                 break;
 808         default:
 809                 WARN(1, "Invalid sta notify: %d\n", cmd);
 810                 break;
 811         }
 812 }
 813
 814 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 815                                   struct ieee80211_sta *sta,
 816                                   bool set)
 817 {
 818         hwsim_check_sta_magic(sta);
 819         return 0;
 820 }
 821
 822 static int mac80211_hwsim_conf_tx(
 823         struct ieee80211_hw *hw, u16 queue,
 824         const struct ieee80211_tx_queue_params *params)
 825 {
 826         printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
 827                "aifs=%d)\n",
 828                wiphy_name(hw->wiphy), __func__, queue,
 829                params->txop, params->cw_min, params->cw_max, params->aifs);
 830         return 0;
 831 }
 832
 833 static int mac80211_hwsim_get_survey(
 834         struct ieee80211_hw *hw, int idx,
 835         struct survey_info *survey)
 836 {
 837         struct ieee80211_conf *conf = &hw->conf;
 838
 839         printk(KERN_DEBUG "%s:%s (idx=%d)\n",
 840                wiphy_name(hw->wiphy), __func__, idx);
 841
 842         if (idx != 0)
 843                 return -ENOENT;
 844
 845         /* Current channel */
 846         survey->channel = conf->channel;
 847
 848         /*
 849          * Magically conjured noise level --- this is only ok for simulated hardware.
 850          *
 851          * A real driver which cannot determine the real channel noise MUST NOT
 852          * report any noise, especially not a magically conjured one :-)
 853          */
 854         survey->filled = SURVEY_INFO_NOISE_DBM;
 855         survey->noise = -92;
 856
 857         return 0;
 858 }
 859
 860 #ifdef CONFIG_NL80211_TESTMODE
 861 /*
 862  * This section contains example code for using netlink
 863  * attributes with the testmode command in nl80211.
 864  */
 865
 866 /* These enums need to be kept in sync with userspace */
 867 enum hwsim_testmode_attr {
 868         __HWSIM_TM_ATTR_INVALID = 0,
 869         HWSIM_TM_ATTR_CMD       = 1,
 870         HWSIM_TM_ATTR_PS        = 2,
 871
 872         /* keep last */
 873         __HWSIM_TM_ATTR_AFTER_LAST,
 874         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
 875 };
 876
 877 enum hwsim_testmode_cmd {
 878         HWSIM_TM_CMD_SET_PS             = 0,
 879         HWSIM_TM_CMD_GET_PS             = 1,
 880 };
 881
 882 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
 883         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
 884         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
 885 };
 886
 887 static int hwsim_fops_ps_write(void *dat, u64 val);
 888
 889 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
 890                                        void *data, int len)
 891 {
 892         struct mac80211_hwsim_data *hwsim = hw->priv;
 893         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
 894         struct sk_buff *skb;
 895         int err, ps;
 896
 897         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
 898                         hwsim_testmode_policy);
 899         if (err)
 900                 return err;
 901
 902         if (!tb[HWSIM_TM_ATTR_CMD])
 903                 return -EINVAL;
 904
 905         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
 906         case HWSIM_TM_CMD_SET_PS:
 907                 if (!tb[HWSIM_TM_ATTR_PS])
 908                         return -EINVAL;
 909                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
 910                 return hwsim_fops_ps_write(hwsim, ps);
 911         case HWSIM_TM_CMD_GET_PS:
 912                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
 913                                                 nla_total_size(sizeof(u32)));
 914                 if (!skb)
 915                         return -ENOMEM;
 916                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
 917                 return cfg80211_testmode_reply(skb);
 918         default:
 919                 return -EOPNOTSUPP;
 920         }
 921
 922  nla_put_failure:
 923         kfree_skb(skb);
 924         return -ENOBUFS;
 925 }
 926 #endif
 927
 928 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
 929                                        struct ieee80211_vif *vif,
 930                                        enum ieee80211_ampdu_mlme_action action,
 931                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 932 {
 933         switch (action) {
 934         case IEEE80211_AMPDU_TX_START:
 935                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 936                 break;
 937         case IEEE80211_AMPDU_TX_STOP:
 938                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 939                 break;
 940         case IEEE80211_AMPDU_TX_OPERATIONAL:
 941                 break;
 942         case IEEE80211_AMPDU_RX_START:
 943         case IEEE80211_AMPDU_RX_STOP:
 944                 break;
 945         default:
 946                 return -EOPNOTSUPP;
 947         }
 948
 949         return 0;
 950 }
 951
 952 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
 953 {
 954         /*
 955          * In this special case, there's nothing we need to
 956          * do because hwsim does transmission synchronously.
 957          * In the future, when it does transmissions via
 958          * userspace, we may need to do something.
 959          */
 960 }
 961
 962 struct hw_scan_done {
 963         struct delayed_work w;
 964         struct ieee80211_hw *hw;
 965 };
 966
 967 static void hw_scan_done(struct work_struct *work)
 968 {
 969         struct hw_scan_done *hsd =
 970                 container_of(work, struct hw_scan_done, w.work);
 971
 972         ieee80211_scan_completed(hsd->hw, false);
 973         kfree(hsd);
 974 }
 975
 976 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
 977                                   struct ieee80211_vif *vif,
 978                                   struct cfg80211_scan_request *req)
 979 {
 980         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
 981         int i;
 982
 983         if (!hsd)
 984                 return -ENOMEM;
 985
 986         hsd->hw = hw;
 987         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
 988
 989         printk(KERN_DEBUG "hwsim hw_scan request\n");
 990         for (i = 0; i < req->n_channels; i++)
 991                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
 992                         req->channels[i]->center_freq);
 993
 994         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
 995
 996         return 0;
 997 }
 998
 999 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1000 {
1001         struct mac80211_hwsim_data *hwsim = hw->priv;
1002
1003         mutex_lock(&hwsim->mutex);
1004
1005         if (hwsim->scanning) {
1006                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1007                 goto out;
1008         }
1009
1010         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1011         hwsim->scanning = true;
1012
1013 out:
1014         mutex_unlock(&hwsim->mutex);
1015 }
1016
1017 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1018 {
1019         struct mac80211_hwsim_data *hwsim = hw->priv;
1020
1021         mutex_lock(&hwsim->mutex);
1022
1023         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1024         hwsim->scanning = false;
1025
1026         mutex_unlock(&hwsim->mutex);
1027 }
1028
1029 static struct ieee80211_ops mac80211_hwsim_ops =
1030 {
1031         .tx = mac80211_hwsim_tx,
1032         .start = mac80211_hwsim_start,
1033         .stop = mac80211_hwsim_stop,
1034         .add_interface = mac80211_hwsim_add_interface,
1035         .remove_interface = mac80211_hwsim_remove_interface,
1036         .config = mac80211_hwsim_config,
1037         .configure_filter = mac80211_hwsim_configure_filter,
1038         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1039         .sta_add = mac80211_hwsim_sta_add,
1040         .sta_remove = mac80211_hwsim_sta_remove,
1041         .sta_notify = mac80211_hwsim_sta_notify,
1042         .set_tim = mac80211_hwsim_set_tim,
1043         .conf_tx = mac80211_hwsim_conf_tx,
1044         .get_survey = mac80211_hwsim_get_survey,
1045         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1046         .ampdu_action = mac80211_hwsim_ampdu_action,
1047         .sw_scan_start = mac80211_hwsim_sw_scan,
1048         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1049         .flush = mac80211_hwsim_flush,
1050 };
1051
1052
1053 static void mac80211_hwsim_free(void)
1054 {
1055         struct list_head tmplist, *i, *tmp;
1056         struct mac80211_hwsim_data *data, *tmpdata;
1057
1058         INIT_LIST_HEAD(&tmplist);
1059
1060         spin_lock_bh(&hwsim_radio_lock);
1061         list_for_each_safe(i, tmp, &hwsim_radios)
1062                 list_move(i, &tmplist);
1063         spin_unlock_bh(&hwsim_radio_lock);
1064
1065         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1066                 debugfs_remove(data->debugfs_group);
1067                 debugfs_remove(data->debugfs_ps);
1068                 debugfs_remove(data->debugfs);
1069                 ieee80211_unregister_hw(data->hw);
1070                 device_unregister(data->dev);
1071                 ieee80211_free_hw(data->hw);
1072         }
1073         class_destroy(hwsim_class);
1074 }
1075
1076
1077 static struct device_driver mac80211_hwsim_driver = {
1078         .name = "mac80211_hwsim"
1079 };
1080
1081 static const struct net_device_ops hwsim_netdev_ops = {
1082         .ndo_start_xmit         = hwsim_mon_xmit,
1083         .ndo_change_mtu         = eth_change_mtu,
1084         .ndo_set_mac_address    = eth_mac_addr,
1085         .ndo_validate_addr      = eth_validate_addr,
1086 };
1087
1088 static void hwsim_mon_setup(struct net_device *dev)
1089 {
1090         dev->netdev_ops = &hwsim_netdev_ops;
1091         dev->destructor = free_netdev;
1092         ether_setup(dev);
1093         dev->tx_queue_len = 0;
1094         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1095         memset(dev->dev_addr, 0, ETH_ALEN);
1096         dev->dev_addr[0] = 0x12;
1097 }
1098
1099
1100 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1101 {
1102         struct mac80211_hwsim_data *data = dat;
1103         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1104         struct sk_buff *skb;
1105         struct ieee80211_pspoll *pspoll;
1106
1107         if (!vp->assoc)
1108                 return;
1109
1110         printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
1111                wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
1112
1113         skb = dev_alloc_skb(sizeof(*pspoll));
1114         if (!skb)
1115                 return;
1116         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1117         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1118                                             IEEE80211_STYPE_PSPOLL |
1119                                             IEEE80211_FCTL_PM);
1120         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1121         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1122         memcpy(pspoll->ta, mac, ETH_ALEN);
1123         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1124                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1125         dev_kfree_skb(skb);
1126 }
1127
1128
1129 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1130                                 struct ieee80211_vif *vif, int ps)
1131 {
1132         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1133         struct sk_buff *skb;
1134         struct ieee80211_hdr *hdr;
1135
1136         if (!vp->assoc)
1137                 return;
1138
1139         printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
1140                wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
1141
1142         skb = dev_alloc_skb(sizeof(*hdr));
1143         if (!skb)
1144                 return;
1145         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1146         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1147                                          IEEE80211_STYPE_NULLFUNC |
1148                                          (ps ? IEEE80211_FCTL_PM : 0));
1149         hdr->duration_id = cpu_to_le16(0);
1150         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1151         memcpy(hdr->addr2, mac, ETH_ALEN);
1152         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1153         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1154                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1155         dev_kfree_skb(skb);
1156 }
1157
1158
1159 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1160                                    struct ieee80211_vif *vif)
1161 {
1162         struct mac80211_hwsim_data *data = dat;
1163         hwsim_send_nullfunc(data, mac, vif, 1);
1164 }
1165
1166
1167 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1168                                       struct ieee80211_vif *vif)
1169 {
1170         struct mac80211_hwsim_data *data = dat;
1171         hwsim_send_nullfunc(data, mac, vif, 0);
1172 }
1173
1174
1175 static int hwsim_fops_ps_read(void *dat, u64 *val)
1176 {
1177         struct mac80211_hwsim_data *data = dat;
1178         *val = data->ps;
1179         return 0;
1180 }
1181
1182 static int hwsim_fops_ps_write(void *dat, u64 val)
1183 {
1184         struct mac80211_hwsim_data *data = dat;
1185         enum ps_mode old_ps;
1186
1187         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1188             val != PS_MANUAL_POLL)
1189                 return -EINVAL;
1190
1191         old_ps = data->ps;
1192         data->ps = val;
1193
1194         if (val == PS_MANUAL_POLL) {
1195                 ieee80211_iterate_active_interfaces(data->hw,
1196                                                     hwsim_send_ps_poll, data);
1197                 data->ps_poll_pending = true;
1198         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1199                 ieee80211_iterate_active_interfaces(data->hw,
1200                                                     hwsim_send_nullfunc_ps,
1201                                                     data);
1202         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1203                 ieee80211_iterate_active_interfaces(data->hw,
1204                                                     hwsim_send_nullfunc_no_ps,
1205                                                     data);
1206         }
1207
1208         return 0;
1209 }
1210
1211 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1212                         "%llu\n");
1213
1214
1215 static int hwsim_fops_group_read(void *dat, u64 *val)
1216 {
1217         struct mac80211_hwsim_data *data = dat;
1218         *val = data->group;
1219         return 0;
1220 }
1221
1222 static int hwsim_fops_group_write(void *dat, u64 val)
1223 {
1224         struct mac80211_hwsim_data *data = dat;
1225         data->group = val;
1226         return 0;
1227 }
1228
1229 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1230                         hwsim_fops_group_read, hwsim_fops_group_write,
1231                         "%llx\n");
1232
1233 static int __init init_mac80211_hwsim(void)
1234 {
1235         int i, err = 0;
1236         u8 addr[ETH_ALEN];
1237         struct mac80211_hwsim_data *data;
1238         struct ieee80211_hw *hw;
1239         enum ieee80211_band band;
1240
1241         if (radios < 1 || radios > 100)
1242                 return -EINVAL;
1243
1244         if (fake_hw_scan) {
1245                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1246                 mac80211_hwsim_ops.sw_scan_start = NULL;
1247                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1248         }
1249
1250         spin_lock_init(&hwsim_radio_lock);
1251         INIT_LIST_HEAD(&hwsim_radios);
1252
1253         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1254         if (IS_ERR(hwsim_class))
1255                 return PTR_ERR(hwsim_class);
1256
1257         memset(addr, 0, ETH_ALEN);
1258         addr[0] = 0x02;
1259
1260         for (i = 0; i < radios; i++) {
1261                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1262                        i);
1263                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1264                 if (!hw) {
1265                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1266                                "failed\n");
1267                         err = -ENOMEM;
1268                         goto failed;
1269                 }
1270                 data = hw->priv;
1271                 data->hw = hw;
1272
1273                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1274                                           "hwsim%d", i);
1275                 if (IS_ERR(data->dev)) {
1276                         printk(KERN_DEBUG
1277                                "mac80211_hwsim: device_create "
1278                                "failed (%ld)\n", PTR_ERR(data->dev));
1279                         err = -ENOMEM;
1280                         goto failed_drvdata;
1281                 }
1282                 data->dev->driver = &mac80211_hwsim_driver;
1283
1284                 SET_IEEE80211_DEV(hw, data->dev);
1285                 addr[3] = i >> 8;
1286                 addr[4] = i;
1287                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1288                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1289                 data->addresses[1].addr[0] |= 0x40;
1290                 hw->wiphy->n_addresses = 2;
1291                 hw->wiphy->addresses = data->addresses;
1292
1293                 hw->channel_change_time = 1;
1294                 hw->queues = 4;
1295                 hw->wiphy->interface_modes =
1296                         BIT(NL80211_IFTYPE_STATION) |
1297                         BIT(NL80211_IFTYPE_AP) |
1298                         BIT(NL80211_IFTYPE_MESH_POINT);
1299
1300                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1301                             IEEE80211_HW_SIGNAL_DBM |
1302                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1303                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1304                             IEEE80211_HW_AMPDU_AGGREGATION;
1305
1306                 /* ask mac80211 to reserve space for magic */
1307                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1308                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1309
1310                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1311                         sizeof(hwsim_channels_2ghz));
1312                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1313                         sizeof(hwsim_channels_5ghz));
1314                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1315
1316                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1317                         struct ieee80211_supported_band *sband = &data->bands[band];
1318                         switch (band) {
1319                         case IEEE80211_BAND_2GHZ:
1320                                 sband->channels = data->channels_2ghz;
1321                                 sband->n_channels =
1322                                         ARRAY_SIZE(hwsim_channels_2ghz);
1323                                 sband->bitrates = data->rates;
1324                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1325                                 break;
1326                         case IEEE80211_BAND_5GHZ:
1327                                 sband->channels = data->channels_5ghz;
1328                                 sband->n_channels =
1329                                         ARRAY_SIZE(hwsim_channels_5ghz);
1330                                 sband->bitrates = data->rates + 4;
1331                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1332                                 break;
1333                         default:
1334                                 break;
1335                         }
1336
1337                         sband->ht_cap.ht_supported = true;
1338                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1339                                 IEEE80211_HT_CAP_GRN_FLD |
1340                                 IEEE80211_HT_CAP_SGI_40 |
1341                                 IEEE80211_HT_CAP_DSSSCCK40;
1342                         sband->ht_cap.ampdu_factor = 0x3;
1343                         sband->ht_cap.ampdu_density = 0x6;
1344                         memset(&sband->ht_cap.mcs, 0,
1345                                sizeof(sband->ht_cap.mcs));
1346                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1347                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1348                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1349
1350                         hw->wiphy->bands[band] = sband;
1351                 }
1352                 /* By default all radios are belonging to the first group */
1353                 data->group = 1;
1354                 mutex_init(&data->mutex);
1355
1356                 /* Work to be done prior to ieee80211_register_hw() */
1357                 switch (regtest) {
1358                 case HWSIM_REGTEST_DISABLED:
1359                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1360                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1361                 case HWSIM_REGTEST_DIFF_COUNTRY:
1362                         /*
1363                          * Nothing to be done for driver regulatory domain
1364                          * hints prior to ieee80211_register_hw()
1365                          */
1366                         break;
1367                 case HWSIM_REGTEST_WORLD_ROAM:
1368                         if (i == 0) {
1369                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1370                                 wiphy_apply_custom_regulatory(hw->wiphy,
1371                                         &hwsim_world_regdom_custom_01);
1372                         }
1373                         break;
1374                 case HWSIM_REGTEST_CUSTOM_WORLD:
1375                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1376                         wiphy_apply_custom_regulatory(hw->wiphy,
1377                                 &hwsim_world_regdom_custom_01);
1378                         break;
1379                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1380                         if (i == 0) {
1381                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1382                                 wiphy_apply_custom_regulatory(hw->wiphy,
1383                                         &hwsim_world_regdom_custom_01);
1384                         } else if (i == 1) {
1385                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1386                                 wiphy_apply_custom_regulatory(hw->wiphy,
1387                                         &hwsim_world_regdom_custom_02);
1388                         }
1389                         break;
1390                 case HWSIM_REGTEST_STRICT_ALL:
1391                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1392                         break;
1393                 case HWSIM_REGTEST_STRICT_FOLLOW:
1394                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1395                         if (i == 0)
1396                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1397                         break;
1398                 case HWSIM_REGTEST_ALL:
1399                         if (i == 0) {
1400                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1401                                 wiphy_apply_custom_regulatory(hw->wiphy,
1402                                         &hwsim_world_regdom_custom_01);
1403                         } else if (i == 1) {
1404                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1405                                 wiphy_apply_custom_regulatory(hw->wiphy,
1406                                         &hwsim_world_regdom_custom_02);
1407                         } else if (i == 4)
1408                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1409                         break;
1410                 default:
1411                         break;
1412                 }
1413
1414                 /* give the regulatory workqueue a chance to run */
1415                 if (regtest)
1416                         schedule_timeout_interruptible(1);
1417                 err = ieee80211_register_hw(hw);
1418                 if (err < 0) {
1419                         printk(KERN_DEBUG "mac80211_hwsim: "
1420                                "ieee80211_register_hw failed (%d)\n", err);
1421                         goto failed_hw;
1422                 }
1423
1424                 /* Work to be done after to ieee80211_register_hw() */
1425                 switch (regtest) {
1426                 case HWSIM_REGTEST_WORLD_ROAM:
1427                 case HWSIM_REGTEST_DISABLED:
1428                         break;
1429                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1430                         if (!i)
1431                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1432                         break;
1433                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1434                 case HWSIM_REGTEST_STRICT_ALL:
1435                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1436                         break;
1437                 case HWSIM_REGTEST_DIFF_COUNTRY:
1438                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1439                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1440                         break;
1441                 case HWSIM_REGTEST_CUSTOM_WORLD:
1442                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1443                         /*
1444                          * Nothing to be done for custom world regulatory
1445                          * domains after to ieee80211_register_hw
1446                          */
1447                         break;
1448                 case HWSIM_REGTEST_STRICT_FOLLOW:
1449                         if (i == 0)
1450                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1451                         break;
1452                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1453                         if (i == 0)
1454                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1455                         else if (i == 1)
1456                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1457                         break;
1458                 case HWSIM_REGTEST_ALL:
1459                         if (i == 2)
1460                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1461                         else if (i == 3)
1462                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1463                         else if (i == 4)
1464                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1465                         break;
1466                 default:
1467                         break;
1468                 }
1469
1470                 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1471                        wiphy_name(hw->wiphy),
1472                        hw->wiphy->perm_addr);
1473
1474                 data->debugfs = debugfs_create_dir("hwsim",
1475                                                    hw->wiphy->debugfsdir);
1476                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1477                                                        data->debugfs, data,
1478                                                        &hwsim_fops_ps);
1479                 data->debugfs_group = debugfs_create_file("group", 0666,
1480                                                         data->debugfs, data,
1481                                                         &hwsim_fops_group);
1482
1483                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1484                             (unsigned long) hw);
1485
1486                 list_add_tail(&data->list, &hwsim_radios);
1487         }
1488
1489         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1490         if (hwsim_mon == NULL)
1491                 goto failed;
1492
1493         rtnl_lock();
1494
1495         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1496         if (err < 0)
1497                 goto failed_mon;
1498
1499
1500         err = register_netdevice(hwsim_mon);
1501         if (err < 0)
1502                 goto failed_mon;
1503
1504         rtnl_unlock();
1505
1506         return 0;
1507
1508 failed_mon:
1509         rtnl_unlock();
1510         free_netdev(hwsim_mon);
1511         mac80211_hwsim_free();
1512         return err;
1513
1514 failed_hw:
1515         device_unregister(data->dev);
1516 failed_drvdata:
1517         ieee80211_free_hw(hw);
1518 failed:
1519         mac80211_hwsim_free();
1520         return err;
1521 }
1522
1523
1524 static void __exit exit_mac80211_hwsim(void)
1525 {
1526         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1527
1528         mac80211_hwsim_free();
1529         unregister_netdev(hwsim_mon);
1530 }
1531
1532
1533 module_init(init_mac80211_hwsim);
1534 module_exit(exit_mac80211_hwsim);