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;
 294         struct timer_list beacon_timer;
 295         enum ps_mode {
 296                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 297         } ps;
 298         bool ps_poll_pending;
 299         struct dentry *debugfs;
 300         struct dentry *debugfs_ps;
 301
 302         /*
 303          * Only radios in the same group can communicate together (the
 304          * channel has to match too). Each bit represents a group. A
 305          * radio can be in more then one group.
 306          */
 307         u64 group;
 308         struct dentry *debugfs_group;
 309 };
 310
 311
 312 struct hwsim_radiotap_hdr {
 313         struct ieee80211_radiotap_header hdr;
 314         u8 rt_flags;
 315         u8 rt_rate;
 316         __le16 rt_channel;
 317         __le16 rt_chbitmask;
 318 } __attribute__ ((packed));
 319
 320
 321 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 322                                         struct net_device *dev)
 323 {
 324         /* TODO: allow packet injection */
 325         dev_kfree_skb(skb);
 326         return NETDEV_TX_OK;
 327 }
 328
 329
 330 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 331                                       struct sk_buff *tx_skb)
 332 {
 333         struct mac80211_hwsim_data *data = hw->priv;
 334         struct sk_buff *skb;
 335         struct hwsim_radiotap_hdr *hdr;
 336         u16 flags;
 337         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 338         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 339
 340         if (!netif_running(hwsim_mon))
 341                 return;
 342
 343         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 344         if (skb == NULL)
 345                 return;
 346
 347         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 348         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 349         hdr->hdr.it_pad = 0;
 350         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 351         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 352                                           (1 << IEEE80211_RADIOTAP_RATE) |
 353                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 354         hdr->rt_flags = 0;
 355         hdr->rt_rate = txrate->bitrate / 5;
 356         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 357         flags = IEEE80211_CHAN_2GHZ;
 358         if (txrate->flags & IEEE80211_RATE_ERP_G)
 359                 flags |= IEEE80211_CHAN_OFDM;
 360         else
 361                 flags |= IEEE80211_CHAN_CCK;
 362         hdr->rt_chbitmask = cpu_to_le16(flags);
 363
 364         skb->dev = hwsim_mon;
 365         skb_set_mac_header(skb, 0);
 366         skb->ip_summed = CHECKSUM_UNNECESSARY;
 367         skb->pkt_type = PACKET_OTHERHOST;
 368         skb->protocol = htons(ETH_P_802_2);
 369         memset(skb->cb, 0, sizeof(skb->cb));
 370         netif_rx(skb);
 371 }
 372
 373
 374 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 375 {
 376         struct mac80211_hwsim_data *data = hw->priv;
 377         struct sk_buff *skb;
 378         struct hwsim_radiotap_hdr *hdr;
 379         u16 flags;
 380         struct ieee80211_hdr *hdr11;
 381
 382         if (!netif_running(hwsim_mon))
 383                 return;
 384
 385         skb = dev_alloc_skb(100);
 386         if (skb == NULL)
 387                 return;
 388
 389         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 390         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 391         hdr->hdr.it_pad = 0;
 392         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 393         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 394                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 395         hdr->rt_flags = 0;
 396         hdr->rt_rate = 0;
 397         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 398         flags = IEEE80211_CHAN_2GHZ;
 399         hdr->rt_chbitmask = cpu_to_le16(flags);
 400
 401         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 402         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 403                                            IEEE80211_STYPE_ACK);
 404         hdr11->duration_id = cpu_to_le16(0);
 405         memcpy(hdr11->addr1, addr, ETH_ALEN);
 406
 407         skb->dev = hwsim_mon;
 408         skb_set_mac_header(skb, 0);
 409         skb->ip_summed = CHECKSUM_UNNECESSARY;
 410         skb->pkt_type = PACKET_OTHERHOST;
 411         skb->protocol = htons(ETH_P_802_2);
 412         memset(skb->cb, 0, sizeof(skb->cb));
 413         netif_rx(skb);
 414 }
 415
 416
 417 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 418                            struct sk_buff *skb)
 419 {
 420         switch (data->ps) {
 421         case PS_DISABLED:
 422                 return true;
 423         case PS_ENABLED:
 424                 return false;
 425         case PS_AUTO_POLL:
 426                 /* TODO: accept (some) Beacons by default and other frames only
 427                  * if pending PS-Poll has been sent */
 428                 return true;
 429         case PS_MANUAL_POLL:
 430                 /* Allow unicast frames to own address if there is a pending
 431                  * PS-Poll */
 432                 if (data->ps_poll_pending &&
 433                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 434                            ETH_ALEN) == 0) {
 435                         data->ps_poll_pending = false;
 436                         return true;
 437                 }
 438                 return false;
 439         }
 440
 441         return true;
 442 }
 443
 444
 445 struct mac80211_hwsim_addr_match_data {
 446         bool ret;
 447         const u8 *addr;
 448 };
 449
 450 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 451                                      struct ieee80211_vif *vif)
 452 {
 453         struct mac80211_hwsim_addr_match_data *md = data;
 454         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 455                 md->ret = true;
 456 }
 457
 458
 459 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 460                                       const u8 *addr)
 461 {
 462         struct mac80211_hwsim_addr_match_data md;
 463
 464         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 465                 return true;
 466
 467         md.ret = false;
 468         md.addr = addr;
 469         ieee80211_iterate_active_interfaces_atomic(data->hw,
 470                                                    mac80211_hwsim_addr_iter,
 471                                                    &md);
 472
 473         return md.ret;
 474 }
 475
 476
 477 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 478                                     struct sk_buff *skb)
 479 {
 480         struct mac80211_hwsim_data *data = hw->priv, *data2;
 481         bool ack = false;
 482         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 483         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 484         struct ieee80211_rx_status rx_status;
 485
 486         if (data->idle) {
 487                 printk(KERN_DEBUG "%s: Trying to TX when idle - reject\n",
 488                        wiphy_name(hw->wiphy));
 489                 return false;
 490         }
 491
 492         memset(&rx_status, 0, sizeof(rx_status));
 493         /* TODO: set mactime */
 494         rx_status.freq = data->channel->center_freq;
 495         rx_status.band = data->channel->band;
 496         rx_status.rate_idx = info->control.rates[0].idx;
 497         /* TODO: simulate real signal strength (and optional packet loss) */
 498         rx_status.signal = -50;
 499
 500         if (data->ps != PS_DISABLED)
 501                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 502
 503         /* release the skb's source info */
 504         skb_orphan(skb);
 505         skb_dst_drop(skb);
 506         skb->mark = 0;
 507         secpath_reset(skb);
 508         nf_reset(skb);
 509
 510         /* Copy skb to all enabled radios that are on the current frequency */
 511         spin_lock(&hwsim_radio_lock);
 512         list_for_each_entry(data2, &hwsim_radios, list) {
 513                 struct sk_buff *nskb;
 514
 515                 if (data == data2)
 516                         continue;
 517
 518                 if (data2->idle || !data2->started ||
 519                     !hwsim_ps_rx_ok(data2, skb) ||
 520                     !data->channel || !data2->channel ||
 521                     data->channel->center_freq != data2->channel->center_freq ||
 522                     !(data->group & data2->group))
 523                         continue;
 524
 525                 nskb = skb_copy(skb, GFP_ATOMIC);
 526                 if (nskb == NULL)
 527                         continue;
 528
 529                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 530                         ack = true;
 531                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 532                 ieee80211_rx_irqsafe(data2->hw, nskb);
 533         }
 534         spin_unlock(&hwsim_radio_lock);
 535
 536         return ack;
 537 }
 538
 539
 540 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 541 {
 542         bool ack;
 543         struct ieee80211_tx_info *txi;
 544
 545         mac80211_hwsim_monitor_rx(hw, skb);
 546
 547         if (skb->len < 10) {
 548                 /* Should not happen; just a sanity check for addr1 use */
 549                 dev_kfree_skb(skb);
 550                 return NETDEV_TX_OK;
 551         }
 552
 553         ack = mac80211_hwsim_tx_frame(hw, skb);
 554         if (ack && skb->len >= 16) {
 555                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 556                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 557         }
 558
 559         txi = IEEE80211_SKB_CB(skb);
 560
 561         if (txi->control.vif)
 562                 hwsim_check_magic(txi->control.vif);
 563         if (txi->control.sta)
 564                 hwsim_check_sta_magic(txi->control.sta);
 565
 566         ieee80211_tx_info_clear_status(txi);
 567         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 568                 txi->flags |= IEEE80211_TX_STAT_ACK;
 569         ieee80211_tx_status_irqsafe(hw, skb);
 570         return NETDEV_TX_OK;
 571 }
 572
 573
 574 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 575 {
 576         struct mac80211_hwsim_data *data = hw->priv;
 577         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 578         data->started = 1;
 579         return 0;
 580 }
 581
 582
 583 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 584 {
 585         struct mac80211_hwsim_data *data = hw->priv;
 586         data->started = 0;
 587         del_timer(&data->beacon_timer);
 588         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 589 }
 590
 591
 592 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 593                                         struct ieee80211_vif *vif)
 594 {
 595         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 596                wiphy_name(hw->wiphy), __func__, vif->type,
 597                vif->addr);
 598         hwsim_set_magic(vif);
 599         return 0;
 600 }
 601
 602
 603 static void mac80211_hwsim_remove_interface(
 604         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 605 {
 606         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 607                wiphy_name(hw->wiphy), __func__, vif->type,
 608                vif->addr);
 609         hwsim_check_magic(vif);
 610         hwsim_clear_magic(vif);
 611 }
 612
 613
 614 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 615                                      struct ieee80211_vif *vif)
 616 {
 617         struct ieee80211_hw *hw = arg;
 618         struct sk_buff *skb;
 619         struct ieee80211_tx_info *info;
 620
 621         hwsim_check_magic(vif);
 622
 623         if (vif->type != NL80211_IFTYPE_AP &&
 624             vif->type != NL80211_IFTYPE_MESH_POINT)
 625                 return;
 626
 627         skb = ieee80211_beacon_get(hw, vif);
 628         if (skb == NULL)
 629                 return;
 630         info = IEEE80211_SKB_CB(skb);
 631
 632         mac80211_hwsim_monitor_rx(hw, skb);
 633         mac80211_hwsim_tx_frame(hw, skb);
 634         dev_kfree_skb(skb);
 635 }
 636
 637
 638 static void mac80211_hwsim_beacon(unsigned long arg)
 639 {
 640         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 641         struct mac80211_hwsim_data *data = hw->priv;
 642
 643         if (!data->started)
 644                 return;
 645
 646         ieee80211_iterate_active_interfaces_atomic(
 647                 hw, mac80211_hwsim_beacon_tx, hw);
 648
 649         data->beacon_timer.expires = jiffies + data->beacon_int;
 650         add_timer(&data->beacon_timer);
 651 }
 652
 653
 654 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 655 {
 656         struct mac80211_hwsim_data *data = hw->priv;
 657         struct ieee80211_conf *conf = &hw->conf;
 658         static const char *chantypes[4] = {
 659                 [NL80211_CHAN_NO_HT] = "noht",
 660                 [NL80211_CHAN_HT20] = "ht20",
 661                 [NL80211_CHAN_HT40MINUS] = "ht40-",
 662                 [NL80211_CHAN_HT40PLUS] = "ht40+",
 663         };
 664         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 665                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 666                 [IEEE80211_SMPS_OFF] = "off",
 667                 [IEEE80211_SMPS_STATIC] = "static",
 668                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 669         };
 670
 671         printk(KERN_DEBUG "%s:%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 672                wiphy_name(hw->wiphy), __func__,
 673                conf->channel->center_freq,
 674                chantypes[conf->channel_type],
 675                !!(conf->flags & IEEE80211_CONF_IDLE),
 676                !!(conf->flags & IEEE80211_CONF_PS),
 677                smps_modes[conf->smps_mode]);
 678
 679         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 680
 681         data->channel = conf->channel;
 682         if (!data->started || !data->beacon_int)
 683                 del_timer(&data->beacon_timer);
 684         else
 685                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 686
 687         return 0;
 688 }
 689
 690
 691 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 692                                             unsigned int changed_flags,
 693                                             unsigned int *total_flags,u64 multicast)
 694 {
 695         struct mac80211_hwsim_data *data = hw->priv;
 696
 697         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 698
 699         data->rx_filter = 0;
 700         if (*total_flags & FIF_PROMISC_IN_BSS)
 701                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 702         if (*total_flags & FIF_ALLMULTI)
 703                 data->rx_filter |= FIF_ALLMULTI;
 704
 705         *total_flags = data->rx_filter;
 706 }
 707
 708 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 709                                             struct ieee80211_vif *vif,
 710                                             struct ieee80211_bss_conf *info,
 711                                             u32 changed)
 712 {
 713         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 714         struct mac80211_hwsim_data *data = hw->priv;
 715
 716         hwsim_check_magic(vif);
 717
 718         printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
 719                wiphy_name(hw->wiphy), __func__, changed);
 720
 721         if (changed & BSS_CHANGED_BSSID) {
 722                 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
 723                        wiphy_name(hw->wiphy), __func__,
 724                        info->bssid);
 725                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 726         }
 727
 728         if (changed & BSS_CHANGED_ASSOC) {
 729                 printk(KERN_DEBUG "  %s: ASSOC: assoc=%d aid=%d\n",
 730                        wiphy_name(hw->wiphy), info->assoc, info->aid);
 731                 vp->assoc = info->assoc;
 732                 vp->aid = info->aid;
 733         }
 734
 735         if (changed & BSS_CHANGED_BEACON_INT) {
 736                 printk(KERN_DEBUG "  %s: BCNINT: %d\n",
 737                        wiphy_name(hw->wiphy), info->beacon_int);
 738                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 739                 if (WARN_ON(!data->beacon_int))
 740                         data->beacon_int = 1;
 741                 if (data->started)
 742                         mod_timer(&data->beacon_timer,
 743                                   jiffies + data->beacon_int);
 744         }
 745
 746         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 747                 printk(KERN_DEBUG "  %s: ERP_CTS_PROT: %d\n",
 748                        wiphy_name(hw->wiphy), info->use_cts_prot);
 749         }
 750
 751         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 752                 printk(KERN_DEBUG "  %s: ERP_PREAMBLE: %d\n",
 753                        wiphy_name(hw->wiphy), info->use_short_preamble);
 754         }
 755
 756         if (changed & BSS_CHANGED_ERP_SLOT) {
 757                 printk(KERN_DEBUG "  %s: ERP_SLOT: %d\n",
 758                        wiphy_name(hw->wiphy), info->use_short_slot);
 759         }
 760
 761         if (changed & BSS_CHANGED_HT) {
 762                 printk(KERN_DEBUG "  %s: HT: op_mode=0x%x\n",
 763                        wiphy_name(hw->wiphy),
 764                        info->ht_operation_mode);
 765         }
 766
 767         if (changed & BSS_CHANGED_BASIC_RATES) {
 768                 printk(KERN_DEBUG "  %s: BASIC_RATES: 0x%llx\n",
 769                        wiphy_name(hw->wiphy),
 770                        (unsigned long long) info->basic_rates);
 771         }
 772 }
 773
 774 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 775                                   struct ieee80211_vif *vif,
 776                                   struct ieee80211_sta *sta)
 777 {
 778         hwsim_check_magic(vif);
 779         hwsim_set_sta_magic(sta);
 780
 781         return 0;
 782 }
 783
 784 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 785                                      struct ieee80211_vif *vif,
 786                                      struct ieee80211_sta *sta)
 787 {
 788         hwsim_check_magic(vif);
 789         hwsim_clear_sta_magic(sta);
 790
 791         return 0;
 792 }
 793
 794 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 795                                       struct ieee80211_vif *vif,
 796                                       enum sta_notify_cmd cmd,
 797                                       struct ieee80211_sta *sta)
 798 {
 799         hwsim_check_magic(vif);
 800
 801         switch (cmd) {
 802         case STA_NOTIFY_SLEEP:
 803         case STA_NOTIFY_AWAKE:
 804                 /* TODO: make good use of these flags */
 805                 break;
 806         default:
 807                 WARN(1, "Invalid sta notify: %d\n", cmd);
 808                 break;
 809         }
 810 }
 811
 812 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 813                                   struct ieee80211_sta *sta,
 814                                   bool set)
 815 {
 816         hwsim_check_sta_magic(sta);
 817         return 0;
 818 }
 819
 820 static int mac80211_hwsim_conf_tx(
 821         struct ieee80211_hw *hw, u16 queue,
 822         const struct ieee80211_tx_queue_params *params)
 823 {
 824         printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
 825                "aifs=%d)\n",
 826                wiphy_name(hw->wiphy), __func__, queue,
 827                params->txop, params->cw_min, params->cw_max, params->aifs);
 828         return 0;
 829 }
 830
 831 #ifdef CONFIG_NL80211_TESTMODE
 832 /*
 833  * This section contains example code for using netlink
 834  * attributes with the testmode command in nl80211.
 835  */
 836
 837 /* These enums need to be kept in sync with userspace */
 838 enum hwsim_testmode_attr {
 839         __HWSIM_TM_ATTR_INVALID = 0,
 840         HWSIM_TM_ATTR_CMD       = 1,
 841         HWSIM_TM_ATTR_PS        = 2,
 842
 843         /* keep last */
 844         __HWSIM_TM_ATTR_AFTER_LAST,
 845         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
 846 };
 847
 848 enum hwsim_testmode_cmd {
 849         HWSIM_TM_CMD_SET_PS             = 0,
 850         HWSIM_TM_CMD_GET_PS             = 1,
 851 };
 852
 853 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
 854         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
 855         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
 856 };
 857
 858 static int hwsim_fops_ps_write(void *dat, u64 val);
 859
 860 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
 861                                        void *data, int len)
 862 {
 863         struct mac80211_hwsim_data *hwsim = hw->priv;
 864         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
 865         struct sk_buff *skb;
 866         int err, ps;
 867
 868         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
 869                         hwsim_testmode_policy);
 870         if (err)
 871                 return err;
 872
 873         if (!tb[HWSIM_TM_ATTR_CMD])
 874                 return -EINVAL;
 875
 876         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
 877         case HWSIM_TM_CMD_SET_PS:
 878                 if (!tb[HWSIM_TM_ATTR_PS])
 879                         return -EINVAL;
 880                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
 881                 return hwsim_fops_ps_write(hwsim, ps);
 882         case HWSIM_TM_CMD_GET_PS:
 883                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
 884                                                 nla_total_size(sizeof(u32)));
 885                 if (!skb)
 886                         return -ENOMEM;
 887                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
 888                 return cfg80211_testmode_reply(skb);
 889         default:
 890                 return -EOPNOTSUPP;
 891         }
 892
 893  nla_put_failure:
 894         kfree_skb(skb);
 895         return -ENOBUFS;
 896 }
 897 #endif
 898
 899 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
 900                                        struct ieee80211_vif *vif,
 901                                        enum ieee80211_ampdu_mlme_action action,
 902                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 903 {
 904         switch (action) {
 905         case IEEE80211_AMPDU_TX_START:
 906                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 907                 break;
 908         case IEEE80211_AMPDU_TX_STOP:
 909                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 910                 break;
 911         case IEEE80211_AMPDU_TX_OPERATIONAL:
 912                 break;
 913         case IEEE80211_AMPDU_RX_START:
 914         case IEEE80211_AMPDU_RX_STOP:
 915                 break;
 916         default:
 917                 return -EOPNOTSUPP;
 918         }
 919
 920         return 0;
 921 }
 922
 923 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
 924 {
 925         /*
 926          * In this special case, there's nothing we need to
 927          * do because hwsim does transmission synchronously.
 928          * In the future, when it does transmissions via
 929          * userspace, we may need to do something.
 930          */
 931 }
 932
 933 struct hw_scan_done {
 934         struct delayed_work w;
 935         struct ieee80211_hw *hw;
 936 };
 937
 938 static void hw_scan_done(struct work_struct *work)
 939 {
 940         struct hw_scan_done *hsd =
 941                 container_of(work, struct hw_scan_done, w.work);
 942
 943         ieee80211_scan_completed(hsd->hw, false);
 944         kfree(hsd);
 945 }
 946
 947 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
 948                                   struct cfg80211_scan_request *req)
 949 {
 950         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
 951         int i;
 952
 953         if (!hsd)
 954                 return -ENOMEM;
 955
 956         hsd->hw = hw;
 957         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
 958
 959         printk(KERN_DEBUG "hwsim scan request\n");
 960         for (i = 0; i < req->n_channels; i++)
 961                 printk(KERN_DEBUG "hwsim scan freq %d\n",
 962                         req->channels[i]->center_freq);
 963
 964         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
 965
 966         return 0;
 967 }
 968
 969 static struct ieee80211_ops mac80211_hwsim_ops =
 970 {
 971         .tx = mac80211_hwsim_tx,
 972         .start = mac80211_hwsim_start,
 973         .stop = mac80211_hwsim_stop,
 974         .add_interface = mac80211_hwsim_add_interface,
 975         .remove_interface = mac80211_hwsim_remove_interface,
 976         .config = mac80211_hwsim_config,
 977         .configure_filter = mac80211_hwsim_configure_filter,
 978         .bss_info_changed = mac80211_hwsim_bss_info_changed,
 979         .sta_add = mac80211_hwsim_sta_add,
 980         .sta_remove = mac80211_hwsim_sta_remove,
 981         .sta_notify = mac80211_hwsim_sta_notify,
 982         .set_tim = mac80211_hwsim_set_tim,
 983         .conf_tx = mac80211_hwsim_conf_tx,
 984         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
 985         .ampdu_action = mac80211_hwsim_ampdu_action,
 986         .flush = mac80211_hwsim_flush,
 987 };
 988
 989
 990 static void mac80211_hwsim_free(void)
 991 {
 992         struct list_head tmplist, *i, *tmp;
 993         struct mac80211_hwsim_data *data, *tmpdata;
 994
 995         INIT_LIST_HEAD(&tmplist);
 996
 997         spin_lock_bh(&hwsim_radio_lock);
 998         list_for_each_safe(i, tmp, &hwsim_radios)
 999                 list_move(i, &tmplist);
1000         spin_unlock_bh(&hwsim_radio_lock);
1001
1002         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1003                 debugfs_remove(data->debugfs_group);
1004                 debugfs_remove(data->debugfs_ps);
1005                 debugfs_remove(data->debugfs);
1006                 ieee80211_unregister_hw(data->hw);
1007                 device_unregister(data->dev);
1008                 ieee80211_free_hw(data->hw);
1009         }
1010         class_destroy(hwsim_class);
1011 }
1012
1013
1014 static struct device_driver mac80211_hwsim_driver = {
1015         .name = "mac80211_hwsim"
1016 };
1017
1018 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29))
1019 static const struct net_device_ops hwsim_netdev_ops = {
1020         .ndo_start_xmit         = hwsim_mon_xmit,
1021         .ndo_change_mtu         = eth_change_mtu,
1022         .ndo_set_mac_address    = eth_mac_addr,
1023         .ndo_validate_addr      = eth_validate_addr,
1024 };
1025 #endif
1026
1027 static void hwsim_mon_setup(struct net_device *dev)
1028 {
1029 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29))
1030         dev->netdev_ops = &hwsim_netdev_ops;
1031 #else
1032         dev->hard_start_xmit = hwsim_mon_xmit;
1033 #endif
1034         dev->destructor = free_netdev;
1035         ether_setup(dev);
1036         dev->tx_queue_len = 0;
1037         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1038         memset(dev->dev_addr, 0, ETH_ALEN);
1039         dev->dev_addr[0] = 0x12;
1040 }
1041
1042
1043 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1044 {
1045         struct mac80211_hwsim_data *data = dat;
1046         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1047         struct sk_buff *skb;
1048         struct ieee80211_pspoll *pspoll;
1049
1050         if (!vp->assoc)
1051                 return;
1052
1053         printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
1054                wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
1055
1056         skb = dev_alloc_skb(sizeof(*pspoll));
1057         if (!skb)
1058                 return;
1059         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1060         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1061                                             IEEE80211_STYPE_PSPOLL |
1062                                             IEEE80211_FCTL_PM);
1063         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1064         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1065         memcpy(pspoll->ta, mac, ETH_ALEN);
1066         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1067                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1068         dev_kfree_skb(skb);
1069 }
1070
1071
1072 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1073                                 struct ieee80211_vif *vif, int ps)
1074 {
1075         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1076         struct sk_buff *skb;
1077         struct ieee80211_hdr *hdr;
1078
1079         if (!vp->assoc)
1080                 return;
1081
1082         printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
1083                wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
1084
1085         skb = dev_alloc_skb(sizeof(*hdr));
1086         if (!skb)
1087                 return;
1088         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1089         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1090                                          IEEE80211_STYPE_NULLFUNC |
1091                                          (ps ? IEEE80211_FCTL_PM : 0));
1092         hdr->duration_id = cpu_to_le16(0);
1093         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1094         memcpy(hdr->addr2, mac, ETH_ALEN);
1095         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1096         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1097                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1098         dev_kfree_skb(skb);
1099 }
1100
1101
1102 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1103                                    struct ieee80211_vif *vif)
1104 {
1105         struct mac80211_hwsim_data *data = dat;
1106         hwsim_send_nullfunc(data, mac, vif, 1);
1107 }
1108
1109
1110 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1111                                       struct ieee80211_vif *vif)
1112 {
1113         struct mac80211_hwsim_data *data = dat;
1114         hwsim_send_nullfunc(data, mac, vif, 0);
1115 }
1116
1117
1118 static int hwsim_fops_ps_read(void *dat, u64 *val)
1119 {
1120         struct mac80211_hwsim_data *data = dat;
1121         *val = data->ps;
1122         return 0;
1123 }
1124
1125 static int hwsim_fops_ps_write(void *dat, u64 val)
1126 {
1127         struct mac80211_hwsim_data *data = dat;
1128         enum ps_mode old_ps;
1129
1130         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1131             val != PS_MANUAL_POLL)
1132                 return -EINVAL;
1133
1134         old_ps = data->ps;
1135         data->ps = val;
1136
1137         if (val == PS_MANUAL_POLL) {
1138                 ieee80211_iterate_active_interfaces(data->hw,
1139                                                     hwsim_send_ps_poll, data);
1140                 data->ps_poll_pending = true;
1141         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1142                 ieee80211_iterate_active_interfaces(data->hw,
1143                                                     hwsim_send_nullfunc_ps,
1144                                                     data);
1145         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1146                 ieee80211_iterate_active_interfaces(data->hw,
1147                                                     hwsim_send_nullfunc_no_ps,
1148                                                     data);
1149         }
1150
1151         return 0;
1152 }
1153
1154 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1155                         "%llu\n");
1156
1157
1158 static int hwsim_fops_group_read(void *dat, u64 *val)
1159 {
1160         struct mac80211_hwsim_data *data = dat;
1161         *val = data->group;
1162         return 0;
1163 }
1164
1165 static int hwsim_fops_group_write(void *dat, u64 val)
1166 {
1167         struct mac80211_hwsim_data *data = dat;
1168         data->group = val;
1169         return 0;
1170 }
1171
1172 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1173                         hwsim_fops_group_read, hwsim_fops_group_write,
1174                         "%llx\n");
1175
1176 static int __init init_mac80211_hwsim(void)
1177 {
1178         int i, err = 0;
1179         u8 addr[ETH_ALEN];
1180         struct mac80211_hwsim_data *data;
1181         struct ieee80211_hw *hw;
1182         enum ieee80211_band band;
1183
1184         if (radios < 1 || radios > 100)
1185                 return -EINVAL;
1186
1187         if (fake_hw_scan)
1188                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1189
1190         spin_lock_init(&hwsim_radio_lock);
1191         INIT_LIST_HEAD(&hwsim_radios);
1192
1193         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1194         if (IS_ERR(hwsim_class))
1195                 return PTR_ERR(hwsim_class);
1196
1197         memset(addr, 0, ETH_ALEN);
1198         addr[0] = 0x02;
1199
1200         for (i = 0; i < radios; i++) {
1201                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1202                        i);
1203                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1204                 if (!hw) {
1205                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1206                                "failed\n");
1207                         err = -ENOMEM;
1208                         goto failed;
1209                 }
1210                 data = hw->priv;
1211                 data->hw = hw;
1212
1213                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1214                                           "hwsim%d", i);
1215                 if (IS_ERR(data->dev)) {
1216                         printk(KERN_DEBUG
1217                                "mac80211_hwsim: device_create "
1218                                "failed (%ld)\n", PTR_ERR(data->dev));
1219                         err = -ENOMEM;
1220                         goto failed_drvdata;
1221                 }
1222                 data->dev->driver = &mac80211_hwsim_driver;
1223
1224                 SET_IEEE80211_DEV(hw, data->dev);
1225                 addr[3] = i >> 8;
1226                 addr[4] = i;
1227                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1228                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1229                 data->addresses[1].addr[0] |= 0x40;
1230                 hw->wiphy->n_addresses = 2;
1231                 hw->wiphy->addresses = data->addresses;
1232
1233                 hw->channel_change_time = 1;
1234                 hw->queues = 4;
1235                 hw->wiphy->interface_modes =
1236                         BIT(NL80211_IFTYPE_STATION) |
1237                         BIT(NL80211_IFTYPE_AP) |
1238                         BIT(NL80211_IFTYPE_MESH_POINT);
1239
1240                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1241                             IEEE80211_HW_SIGNAL_DBM |
1242                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1243                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;
1244
1245                 /* ask mac80211 to reserve space for magic */
1246                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1247                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1248
1249                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1250                         sizeof(hwsim_channels_2ghz));
1251                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1252                         sizeof(hwsim_channels_5ghz));
1253                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1254
1255                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1256                         struct ieee80211_supported_band *sband = &data->bands[band];
1257                         switch (band) {
1258                         case IEEE80211_BAND_2GHZ:
1259                                 sband->channels = data->channels_2ghz;
1260                                 sband->n_channels =
1261                                         ARRAY_SIZE(hwsim_channels_2ghz);
1262                                 sband->bitrates = data->rates;
1263                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1264                                 break;
1265                         case IEEE80211_BAND_5GHZ:
1266                                 sband->channels = data->channels_5ghz;
1267                                 sband->n_channels =
1268                                         ARRAY_SIZE(hwsim_channels_5ghz);
1269                                 sband->bitrates = data->rates + 4;
1270                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1271                                 break;
1272                         default:
1273                                 break;
1274                         }
1275
1276                         sband->ht_cap.ht_supported = true;
1277                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1278                                 IEEE80211_HT_CAP_GRN_FLD |
1279                                 IEEE80211_HT_CAP_SGI_40 |
1280                                 IEEE80211_HT_CAP_DSSSCCK40;
1281                         sband->ht_cap.ampdu_factor = 0x3;
1282                         sband->ht_cap.ampdu_density = 0x6;
1283                         memset(&sband->ht_cap.mcs, 0,
1284                                sizeof(sband->ht_cap.mcs));
1285                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1286                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1287                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1288
1289                         hw->wiphy->bands[band] = sband;
1290                 }
1291                 /* By default all radios are belonging to the first group */
1292                 data->group = 1;
1293
1294                 /* Work to be done prior to ieee80211_register_hw() */
1295                 switch (regtest) {
1296                 case HWSIM_REGTEST_DISABLED:
1297                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1298                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1299                 case HWSIM_REGTEST_DIFF_COUNTRY:
1300                         /*
1301                          * Nothing to be done for driver regulatory domain
1302                          * hints prior to ieee80211_register_hw()
1303                          */
1304                         break;
1305                 case HWSIM_REGTEST_WORLD_ROAM:
1306                         if (i == 0) {
1307                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1308                                 wiphy_apply_custom_regulatory(hw->wiphy,
1309                                         &hwsim_world_regdom_custom_01);
1310                         }
1311                         break;
1312                 case HWSIM_REGTEST_CUSTOM_WORLD:
1313                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1314                         wiphy_apply_custom_regulatory(hw->wiphy,
1315                                 &hwsim_world_regdom_custom_01);
1316                         break;
1317                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1318                         if (i == 0) {
1319                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1320                                 wiphy_apply_custom_regulatory(hw->wiphy,
1321                                         &hwsim_world_regdom_custom_01);
1322                         } else if (i == 1) {
1323                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1324                                 wiphy_apply_custom_regulatory(hw->wiphy,
1325                                         &hwsim_world_regdom_custom_02);
1326                         }
1327                         break;
1328                 case HWSIM_REGTEST_STRICT_ALL:
1329                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1330                         break;
1331                 case HWSIM_REGTEST_STRICT_FOLLOW:
1332                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1333                         if (i == 0)
1334                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1335                         break;
1336                 case HWSIM_REGTEST_ALL:
1337                         if (i == 0) {
1338                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1339                                 wiphy_apply_custom_regulatory(hw->wiphy,
1340                                         &hwsim_world_regdom_custom_01);
1341                         } else if (i == 1) {
1342                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1343                                 wiphy_apply_custom_regulatory(hw->wiphy,
1344                                         &hwsim_world_regdom_custom_02);
1345                         } else if (i == 4)
1346                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1347                         break;
1348                 default:
1349                         break;
1350                 }
1351
1352                 /* give the regulatory workqueue a chance to run */
1353                 if (regtest)
1354                         schedule_timeout_interruptible(1);
1355                 err = ieee80211_register_hw(hw);
1356                 if (err < 0) {
1357                         printk(KERN_DEBUG "mac80211_hwsim: "
1358                                "ieee80211_register_hw failed (%d)\n", err);
1359                         goto failed_hw;
1360                 }
1361
1362                 /* Work to be done after to ieee80211_register_hw() */
1363                 switch (regtest) {
1364                 case HWSIM_REGTEST_WORLD_ROAM:
1365                 case HWSIM_REGTEST_DISABLED:
1366                         break;
1367                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1368                         if (!i)
1369                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1370                         break;
1371                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1372                 case HWSIM_REGTEST_STRICT_ALL:
1373                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1374                         break;
1375                 case HWSIM_REGTEST_DIFF_COUNTRY:
1376                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1377                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1378                         break;
1379                 case HWSIM_REGTEST_CUSTOM_WORLD:
1380                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1381                         /*
1382                          * Nothing to be done for custom world regulatory
1383                          * domains after to ieee80211_register_hw
1384                          */
1385                         break;
1386                 case HWSIM_REGTEST_STRICT_FOLLOW:
1387                         if (i == 0)
1388                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1389                         break;
1390                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1391                         if (i == 0)
1392                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1393                         else if (i == 1)
1394                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1395                         break;
1396                 case HWSIM_REGTEST_ALL:
1397                         if (i == 2)
1398                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1399                         else if (i == 3)
1400                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1401                         else if (i == 4)
1402                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1403                         break;
1404                 default:
1405                         break;
1406                 }
1407
1408                 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1409                        wiphy_name(hw->wiphy),
1410                        hw->wiphy->perm_addr);
1411
1412                 data->debugfs = debugfs_create_dir("hwsim",
1413                                                    hw->wiphy->debugfsdir);
1414                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1415                                                        data->debugfs, data,
1416                                                        &hwsim_fops_ps);
1417                 data->debugfs_group = debugfs_create_file("group", 0666,
1418                                                         data->debugfs, data,
1419                                                         &hwsim_fops_group);
1420
1421                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1422                             (unsigned long) hw);
1423
1424                 list_add_tail(&data->list, &hwsim_radios);
1425         }
1426
1427         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1428         if (hwsim_mon == NULL)
1429                 goto failed;
1430
1431         rtnl_lock();
1432
1433         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1434         if (err < 0)
1435                 goto failed_mon;
1436
1437
1438         err = register_netdevice(hwsim_mon);
1439         if (err < 0)
1440                 goto failed_mon;
1441
1442         rtnl_unlock();
1443
1444         return 0;
1445
1446 failed_mon:
1447         rtnl_unlock();
1448         free_netdev(hwsim_mon);
1449         mac80211_hwsim_free();
1450         return err;
1451
1452 failed_hw:
1453         device_unregister(data->dev);
1454 failed_drvdata:
1455         ieee80211_free_hw(hw);
1456 failed:
1457         mac80211_hwsim_free();
1458         return err;
1459 }
1460
1461
1462 static void __exit exit_mac80211_hwsim(void)
1463 {
1464         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1465
1466         mac80211_hwsim_free();
1467         unregister_netdev(hwsim_mon);
1468 }
1469
1470
1471 module_init(init_mac80211_hwsim);
1472 module_exit(exit_mac80211_hwsim);