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