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