drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 /*
  11  * TODO:
  12  * - IBSS mode simulation (Beacon transmission with competition for "air time")
  13  * - RX filtering based on filter configuration (data->rx_filter)
  14  */
  15
  16 #include <linux/list.h>
  17 #include <linux/spinlock.h>
  18 #include <net/dst.h>
  19 #include <net/xfrm.h>
  20 #include <net/mac80211.h>
  21 #include <net/ieee80211_radiotap.h>
  22 #include <linux/if_arp.h>
  23 #include <linux/rtnetlink.h>
  24 #include <linux/etherdevice.h>
  25 #include <linux/debugfs.h>
  26
  27 MODULE_AUTHOR("Jouni Malinen");
  28 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  29 MODULE_LICENSE("GPL");
  30
  31 static int radios = 2;
  32 module_param(radios, int, 0444);
  33 MODULE_PARM_DESC(radios, "Number of simulated radios");
  34
  35 static bool fake_hw_scan;
  36 module_param(fake_hw_scan, bool, 0444);
  37 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
  38
  39 /**
  40  * enum hwsim_regtest - the type of regulatory tests we offer
  41  *
  42  * These are the different values you can use for the regtest
  43  * module parameter. This is useful to help test world roaming
  44  * and the driver regulatory_hint() call and combinations of these.
  45  * If you want to do specific alpha2 regulatory domain tests simply
  46  * use the userspace regulatory request as that will be respected as
  47  * well without the need of this module parameter. This is designed
  48  * only for testing the driver regulatory request, world roaming
  49  * and all possible combinations.
  50  *
  51  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  52  *      this is the default value.
  53  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  54  *      hint, only one driver regulatory hint will be sent as such the
  55  *      secondary radios are expected to follow.
  56  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  57  *      request with all radios reporting the same regulatory domain.
  58  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  59  *      different regulatory domains requests. Expected behaviour is for
  60  *      an intersection to occur but each device will still use their
  61  *      respective regulatory requested domains. Subsequent radios will
  62  *      use the resulting intersection.
  63  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We acomplish
  64  *      this by using a custom beacon-capable regulatory domain for the first
  65  *      radio. All other device world roam.
  66  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  67  *      domain requests. All radios will adhere to this custom world regulatory
  68  *      domain.
  69  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  70  *      domain requests. The first radio will adhere to the first custom world
  71  *      regulatory domain, the second one to the second custom world regulatory
  72  *      domain. All other devices will world roam.
  73  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  74  *      settings, only the first radio will send a regulatory domain request
  75  *      and use strict settings. The rest of the radios are expected to follow.
  76  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  77  *      settings. All radios will adhere to this.
  78  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  79  *      domain settings, combined with secondary driver regulatory domain
  80  *      settings. The first radio will get a strict regulatory domain setting
  81  *      using the first driver regulatory request and the second radio will use
  82  *      non-strict settings using the second driver regulatory request. All
  83  *      other devices should follow the intersection created between the
  84  *      first two.
  85  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  86  *      at least 6 radios for a complete test. We will test in this order:
  87  *      1 - driver custom world regulatory domain
  88  *      2 - second custom world regulatory domain
  89  *      3 - first driver regulatory domain request
  90  *      4 - second driver regulatory domain request
  91  *      5 - strict regulatory domain settings using the third driver regulatory
  92  *          domain request
  93  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
  94  *                 regulatory requests.
  95  */
  96 enum hwsim_regtest {
  97         HWSIM_REGTEST_DISABLED = 0,
  98         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
  99         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 100         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 101         HWSIM_REGTEST_WORLD_ROAM = 4,
 102         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 103         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 104         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 105         HWSIM_REGTEST_STRICT_ALL = 8,
 106         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 107         HWSIM_REGTEST_ALL = 10,
 108 };
 109
 110 /* Set to one of the HWSIM_REGTEST_* values above */
 111 static int regtest = HWSIM_REGTEST_DISABLED;
 112 module_param(regtest, int, 0444);
 113 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 114
 115 static const char *hwsim_alpha2s[] = {
 116         "FI",
 117         "AL",
 118         "US",
 119         "DE",
 120         "JP",
 121         "AL",
 122 };
 123
 124 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 125         .n_reg_rules = 4,
 126         .alpha2 =  "99",
 127         .reg_rules = {
 128                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 129                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 130                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 131                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 132         }
 133 };
 134
 135 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 136         .n_reg_rules = 2,
 137         .alpha2 =  "99",
 138         .reg_rules = {
 139                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 140                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 141                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 142         }
 143 };
 144
 145 struct hwsim_vif_priv {
 146         u32 magic;
 147         u8 bssid[ETH_ALEN];
 148         bool assoc;
 149         u16 aid;
 150 };
 151
 152 #define HWSIM_VIF_MAGIC 0x69537748
 153
 154 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 155 {
 156         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 157         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 158 }
 159
 160 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 161 {
 162         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 163         vp->magic = HWSIM_VIF_MAGIC;
 164 }
 165
 166 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 167 {
 168         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 169         vp->magic = 0;
 170 }
 171
 172 struct hwsim_sta_priv {
 173         u32 magic;
 174 };
 175
 176 #define HWSIM_STA_MAGIC 0x6d537748
 177
 178 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 179 {
 180         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 181         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 182 }
 183
 184 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 185 {
 186         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 187         sp->magic = HWSIM_STA_MAGIC;
 188 }
 189
 190 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 191 {
 192         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 193         sp->magic = 0;
 194 }
 195
 196 static struct class *hwsim_class;
 197
 198 static struct net_device *hwsim_mon; /* global monitor netdev */
 199
 200 #define CHAN2G(_freq)  { \
 201         .band = IEEE80211_BAND_2GHZ, \
 202         .center_freq = (_freq), \
 203         .hw_value = (_freq), \
 204         .max_power = 20, \
 205 }
 206
 207 #define CHAN5G(_freq) { \
 208         .band = IEEE80211_BAND_5GHZ, \
 209         .center_freq = (_freq), \
 210         .hw_value = (_freq), \
 211         .max_power = 20, \
 212 }
 213
 214 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 215         CHAN2G(2412), /* Channel 1 */
 216         CHAN2G(2417), /* Channel 2 */
 217         CHAN2G(2422), /* Channel 3 */
 218         CHAN2G(2427), /* Channel 4 */
 219         CHAN2G(2432), /* Channel 5 */
 220         CHAN2G(2437), /* Channel 6 */
 221         CHAN2G(2442), /* Channel 7 */
 222         CHAN2G(2447), /* Channel 8 */
 223         CHAN2G(2452), /* Channel 9 */
 224         CHAN2G(2457), /* Channel 10 */
 225         CHAN2G(2462), /* Channel 11 */
 226         CHAN2G(2467), /* Channel 12 */
 227         CHAN2G(2472), /* Channel 13 */
 228         CHAN2G(2484), /* Channel 14 */
 229 };
 230
 231 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 232         CHAN5G(5180), /* Channel 36 */
 233         CHAN5G(5200), /* Channel 40 */
 234         CHAN5G(5220), /* Channel 44 */
 235         CHAN5G(5240), /* Channel 48 */
 236
 237         CHAN5G(5260), /* Channel 52 */
 238         CHAN5G(5280), /* Channel 56 */
 239         CHAN5G(5300), /* Channel 60 */
 240         CHAN5G(5320), /* Channel 64 */
 241
 242         CHAN5G(5500), /* Channel 100 */
 243         CHAN5G(5520), /* Channel 104 */
 244         CHAN5G(5540), /* Channel 108 */
 245         CHAN5G(5560), /* Channel 112 */
 246         CHAN5G(5580), /* Channel 116 */
 247         CHAN5G(5600), /* Channel 120 */
 248         CHAN5G(5620), /* Channel 124 */
 249         CHAN5G(5640), /* Channel 128 */
 250         CHAN5G(5660), /* Channel 132 */
 251         CHAN5G(5680), /* Channel 136 */
 252         CHAN5G(5700), /* Channel 140 */
 253
 254         CHAN5G(5745), /* Channel 149 */
 255         CHAN5G(5765), /* Channel 153 */
 256         CHAN5G(5785), /* Channel 157 */
 257         CHAN5G(5805), /* Channel 161 */
 258         CHAN5G(5825), /* Channel 165 */
 259 };
 260
 261 static const struct ieee80211_rate hwsim_rates[] = {
 262         { .bitrate = 10 },
 263         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 264         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 265         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 266         { .bitrate = 60 },
 267         { .bitrate = 90 },
 268         { .bitrate = 120 },
 269         { .bitrate = 180 },
 270         { .bitrate = 240 },
 271         { .bitrate = 360 },
 272         { .bitrate = 480 },
 273         { .bitrate = 540 }
 274 };
 275
 276 static spinlock_t hwsim_radio_lock;
 277 static struct list_head hwsim_radios;
 278
 279 struct mac80211_hwsim_data {
 280         struct list_head list;
 281         struct ieee80211_hw *hw;
 282         struct device *dev;
 283         struct ieee80211_supported_band bands[2];
 284         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 285         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 286         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 287
 288         struct mac_address addresses[2];
 289
 290         struct ieee80211_channel *channel;
 291         unsigned long beacon_int; /* in jiffies unit */
 292         unsigned int rx_filter;
 293         bool started, idle;
 294         struct timer_list beacon_timer;
 295         enum ps_mode {
 296                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 297         } ps;
 298         bool ps_poll_pending;
 299         struct dentry *debugfs;
 300         struct dentry *debugfs_ps;
 301
 302         /*
 303          * Only radios in the same group can communicate together (the
 304          * channel has to match too). Each bit represents a group. A
 305          * radio can be in more then one group.
 306          */
 307         u64 group;
 308         struct dentry *debugfs_group;
 309 };
 310
 311
 312 struct hwsim_radiotap_hdr {
 313         struct ieee80211_radiotap_header hdr;
 314         u8 rt_flags;
 315         u8 rt_rate;
 316         __le16 rt_channel;
 317         __le16 rt_chbitmask;
 318 } __attribute__ ((packed));
 319
 320
 321 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 322                                         struct net_device *dev)
 323 {
 324         /* TODO: allow packet injection */
 325         dev_kfree_skb(skb);
 326         return NETDEV_TX_OK;
 327 }
 328
 329
 330 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 331                                       struct sk_buff *tx_skb)
 332 {
 333         struct mac80211_hwsim_data *data = hw->priv;
 334         struct sk_buff *skb;
 335         struct hwsim_radiotap_hdr *hdr;
 336         u16 flags;
 337         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 338         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 339
 340         if (!netif_running(hwsim_mon))
 341                 return;
 342
 343         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 344         if (skb == NULL)
 345                 return;
 346
 347         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 348         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 349         hdr->hdr.it_pad = 0;
 350         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 351         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 352                                           (1 << IEEE80211_RADIOTAP_RATE) |
 353                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 354         hdr->rt_flags = 0;
 355         hdr->rt_rate = txrate->bitrate / 5;
 356         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 357         flags = IEEE80211_CHAN_2GHZ;
 358         if (txrate->flags & IEEE80211_RATE_ERP_G)
 359                 flags |= IEEE80211_CHAN_OFDM;
 360         else
 361                 flags |= IEEE80211_CHAN_CCK;
 362         hdr->rt_chbitmask = cpu_to_le16(flags);
 363
 364         skb->dev = hwsim_mon;
 365         skb_set_mac_header(skb, 0);
 366         skb->ip_summed = CHECKSUM_UNNECESSARY;
 367         skb->pkt_type = PACKET_OTHERHOST;
 368         skb->protocol = htons(ETH_P_802_2);
 369         memset(skb->cb, 0, sizeof(skb->cb));
 370         netif_rx(skb);
 371 }
 372
 373
 374 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 375 {
 376         struct mac80211_hwsim_data *data = hw->priv;
 377         struct sk_buff *skb;
 378         struct hwsim_radiotap_hdr *hdr;
 379         u16 flags;
 380         struct ieee80211_hdr *hdr11;
 381
 382         if (!netif_running(hwsim_mon))
 383                 return;
 384
 385         skb = dev_alloc_skb(100);
 386         if (skb == NULL)
 387                 return;
 388
 389         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 390         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 391         hdr->hdr.it_pad = 0;
 392         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 393         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 394                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 395         hdr->rt_flags = 0;
 396         hdr->rt_rate = 0;
 397         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 398         flags = IEEE80211_CHAN_2GHZ;
 399         hdr->rt_chbitmask = cpu_to_le16(flags);
 400
 401         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 402         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 403                                            IEEE80211_STYPE_ACK);
 404         hdr11->duration_id = cpu_to_le16(0);
 405         memcpy(hdr11->addr1, addr, ETH_ALEN);
 406
 407         skb->dev = hwsim_mon;
 408         skb_set_mac_header(skb, 0);
 409         skb->ip_summed = CHECKSUM_UNNECESSARY;
 410         skb->pkt_type = PACKET_OTHERHOST;
 411         skb->protocol = htons(ETH_P_802_2);
 412         memset(skb->cb, 0, sizeof(skb->cb));
 413         netif_rx(skb);
 414 }
 415
 416
 417 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 418                            struct sk_buff *skb)
 419 {
 420         switch (data->ps) {
 421         case PS_DISABLED:
 422                 return true;
 423         case PS_ENABLED:
 424                 return false;
 425         case PS_AUTO_POLL:
 426                 /* TODO: accept (some) Beacons by default and other frames only
 427                  * if pending PS-Poll has been sent */
 428                 return true;
 429         case PS_MANUAL_POLL:
 430                 /* Allow unicast frames to own address if there is a pending
 431                  * PS-Poll */
 432                 if (data->ps_poll_pending &&
 433                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 434                            ETH_ALEN) == 0) {
 435                         data->ps_poll_pending = false;
 436                         return true;
 437                 }
 438                 return false;
 439         }
 440
 441         return true;
 442 }
 443
 444
 445 struct mac80211_hwsim_addr_match_data {
 446         bool ret;
 447         const u8 *addr;
 448 };
 449
 450 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 451                                      struct ieee80211_vif *vif)
 452 {
 453         struct mac80211_hwsim_addr_match_data *md = data;
 454         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 455                 md->ret = true;
 456 }
 457
 458
 459 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 460                                       const u8 *addr)
 461 {
 462         struct mac80211_hwsim_addr_match_data md;
 463
 464         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 465                 return true;
 466
 467         md.ret = false;
 468         md.addr = addr;
 469         ieee80211_iterate_active_interfaces_atomic(data->hw,
 470                                                    mac80211_hwsim_addr_iter,
 471                                                    &md);
 472
 473         return md.ret;
 474 }
 475
 476
 477 static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 478                                     struct sk_buff *skb)
 479 {
 480         struct mac80211_hwsim_data *data = hw->priv, *data2;
 481         bool ack = false;
 482         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 483         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 484         struct ieee80211_rx_status rx_status;
 485
 486         if (data->idle) {
 487                 printk(KERN_DEBUG "%s: Trying to TX when idle - reject\n",
 488                        wiphy_name(hw->wiphy));
 489                 return false;
 490         }
 491
 492         memset(&rx_status, 0, sizeof(rx_status));
 493         /* TODO: set mactime */
 494         rx_status.freq = data->channel->center_freq;
 495         rx_status.band = data->channel->band;
 496         rx_status.rate_idx = info->control.rates[0].idx;
 497         /* TODO: simulate real signal strength (and optional packet loss) */
 498         rx_status.signal = -50;
 499
 500         if (data->ps != PS_DISABLED)
 501                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 502
 503         /* release the skb's source info */
 504         skb_orphan(skb);
 505         skb_dst_drop(skb);
 506         skb->mark = 0;
 507         secpath_reset(skb);
 508         nf_reset(skb);
 509
 510         /* Copy skb to all enabled radios that are on the current frequency */
 511         spin_lock(&hwsim_radio_lock);
 512         list_for_each_entry(data2, &hwsim_radios, list) {
 513                 struct sk_buff *nskb;
 514
 515                 if (data == data2)
 516                         continue;
 517
 518                 if (data2->idle || !data2->started ||
 519                     !hwsim_ps_rx_ok(data2, skb) ||
 520                     !data->channel || !data2->channel ||
 521                     data->channel->center_freq != data2->channel->center_freq ||
 522                     !(data->group & data2->group))
 523                         continue;
 524
 525                 nskb = skb_copy(skb, GFP_ATOMIC);
 526                 if (nskb == NULL)
 527                         continue;
 528
 529                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 530                         ack = true;
 531                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 532                 ieee80211_rx_irqsafe(data2->hw, nskb);
 533         }
 534         spin_unlock(&hwsim_radio_lock);
 535
 536         return ack;
 537 }
 538
 539
 540 static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 541 {
 542         bool ack;
 543         struct ieee80211_tx_info *txi;
 544
 545         mac80211_hwsim_monitor_rx(hw, skb);
 546
 547         if (skb->len < 10) {
 548                 /* Should not happen; just a sanity check for addr1 use */
 549                 dev_kfree_skb(skb);
 550                 return NETDEV_TX_OK;
 551         }
 552
 553         ack = mac80211_hwsim_tx_frame(hw, skb);
 554         if (ack && skb->len >= 16) {
 555                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 556                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 557         }
 558
 559         txi = IEEE80211_SKB_CB(skb);
 560
 561         if (txi->control.vif)
 562                 hwsim_check_magic(txi->control.vif);
 563         if (txi->control.sta)
 564                 hwsim_check_sta_magic(txi->control.sta);
 565
 566         ieee80211_tx_info_clear_status(txi);
 567         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 568                 txi->flags |= IEEE80211_TX_STAT_ACK;
 569         ieee80211_tx_status_irqsafe(hw, skb);
 570         return NETDEV_TX_OK;
 571 }
 572
 573
 574 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 575 {
 576         struct mac80211_hwsim_data *data = hw->priv;
 577         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 578         data->started = 1;
 579         return 0;
 580 }
 581
 582
 583 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 584 {
 585         struct mac80211_hwsim_data *data = hw->priv;
 586         data->started = 0;
 587         del_timer(&data->beacon_timer);
 588         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 589 }
 590
 591
 592 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 593                                         struct ieee80211_vif *vif)
 594 {
 595         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 596                wiphy_name(hw->wiphy), __func__, vif->type,
 597                vif->addr);
 598         hwsim_set_magic(vif);
 599         return 0;
 600 }
 601
 602
 603 static void mac80211_hwsim_remove_interface(
 604         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 605 {
 606         printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n",
 607                wiphy_name(hw->wiphy), __func__, vif->type,
 608                vif->addr);
 609         hwsim_check_magic(vif);
 610         hwsim_clear_magic(vif);
 611 }
 612
 613
 614 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 615                                      struct ieee80211_vif *vif)
 616 {
 617         struct ieee80211_hw *hw = arg;
 618         struct sk_buff *skb;
 619         struct ieee80211_tx_info *info;
 620
 621         hwsim_check_magic(vif);
 622
 623         if (vif->type != NL80211_IFTYPE_AP &&
 624             vif->type != NL80211_IFTYPE_MESH_POINT)
 625                 return;
 626
 627         skb = ieee80211_beacon_get(hw, vif);
 628         if (skb == NULL)
 629                 return;
 630         info = IEEE80211_SKB_CB(skb);
 631
 632         mac80211_hwsim_monitor_rx(hw, skb);
 633         mac80211_hwsim_tx_frame(hw, skb);
 634         dev_kfree_skb(skb);
 635 }
 636
 637
 638 static void mac80211_hwsim_beacon(unsigned long arg)
 639 {
 640         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 641         struct mac80211_hwsim_data *data = hw->priv;
 642
 643         if (!data->started)
 644                 return;
 645
 646         ieee80211_iterate_active_interfaces_atomic(
 647                 hw, mac80211_hwsim_beacon_tx, hw);
 648
 649         data->beacon_timer.expires = jiffies + data->beacon_int;
 650         add_timer(&data->beacon_timer);
 651 }
 652
 653
 654 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 655 {
 656         struct mac80211_hwsim_data *data = hw->priv;
 657         struct ieee80211_conf *conf = &hw->conf;
 658         static const char *chantypes[4] = {
 659                 [NL80211_CHAN_NO_HT] = "noht",
 660                 [NL80211_CHAN_HT20] = "ht20",
 661                 [NL80211_CHAN_HT40MINUS] = "ht40-",
 662                 [NL80211_CHAN_HT40PLUS] = "ht40+",
 663         };
 664         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 665                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 666                 [IEEE80211_SMPS_OFF] = "off",
 667                 [IEEE80211_SMPS_STATIC] = "static",
 668                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 669         };
 670
 671         printk(KERN_DEBUG "%s:%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 672                wiphy_name(hw->wiphy), __func__,
 673                conf->channel->center_freq,
 674                chantypes[conf->channel_type],
 675                !!(conf->flags & IEEE80211_CONF_IDLE),
 676                !!(conf->flags & IEEE80211_CONF_PS),
 677                smps_modes[conf->smps_mode]);
 678
 679         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 680
 681         data->channel = conf->channel;
 682         if (!data->started || !data->beacon_int)
 683                 del_timer(&data->beacon_timer);
 684         else
 685                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 686
 687         return 0;
 688 }
 689
 690
 691 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 692                                             unsigned int changed_flags,
 693                                             unsigned int *total_flags,u64 multicast)
 694 {
 695         struct mac80211_hwsim_data *data = hw->priv;
 696
 697         printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 698
 699         data->rx_filter = 0;
 700         if (*total_flags & FIF_PROMISC_IN_BSS)
 701                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 702         if (*total_flags & FIF_ALLMULTI)
 703                 data->rx_filter |= FIF_ALLMULTI;
 704
 705         *total_flags = data->rx_filter;
 706 }
 707
 708 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 709                                             struct ieee80211_vif *vif,
 710                                             struct ieee80211_bss_conf *info,
 711                                             u32 changed)
 712 {
 713         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 714         struct mac80211_hwsim_data *data = hw->priv;
 715
 716         hwsim_check_magic(vif);
 717
 718         printk(KERN_DEBUG "%s:%s(changed=0x%x)\n",
 719                wiphy_name(hw->wiphy), __func__, changed);
 720
 721         if (changed & BSS_CHANGED_BSSID) {
 722                 printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n",
 723                        wiphy_name(hw->wiphy), __func__,
 724                        info->bssid);
 725                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 726         }
 727
 728         if (changed & BSS_CHANGED_ASSOC) {
 729                 printk(KERN_DEBUG "  %s: ASSOC: assoc=%d aid=%d\n",
 730                        wiphy_name(hw->wiphy), info->assoc, info->aid);
 731                 vp->assoc = info->assoc;
 732                 vp->aid = info->aid;
 733         }
 734
 735         if (changed & BSS_CHANGED_BEACON_INT) {
 736                 printk(KERN_DEBUG "  %s: BCNINT: %d\n",
 737                        wiphy_name(hw->wiphy), info->beacon_int);
 738                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 739                 if (WARN_ON(!data->beacon_int))
 740                         data->beacon_int = 1;
 741                 if (data->started)
 742                         mod_timer(&data->beacon_timer,
 743                                   jiffies + data->beacon_int);
 744         }
 745
 746         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 747                 printk(KERN_DEBUG "  %s: ERP_CTS_PROT: %d\n",
 748                        wiphy_name(hw->wiphy), info->use_cts_prot);
 749         }
 750
 751         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 752                 printk(KERN_DEBUG "  %s: ERP_PREAMBLE: %d\n",
 753                        wiphy_name(hw->wiphy), info->use_short_preamble);
 754         }
 755
 756         if (changed & BSS_CHANGED_ERP_SLOT) {
 757                 printk(KERN_DEBUG "  %s: ERP_SLOT: %d\n",
 758                        wiphy_name(hw->wiphy), info->use_short_slot);
 759         }
 760
 761         if (changed & BSS_CHANGED_HT) {
 762                 printk(KERN_DEBUG "  %s: HT: op_mode=0x%x\n",
 763                        wiphy_name(hw->wiphy),
 764                        info->ht_operation_mode);
 765         }
 766
 767         if (changed & BSS_CHANGED_BASIC_RATES) {
 768                 printk(KERN_DEBUG "  %s: BASIC_RATES: 0x%llx\n",
 769                        wiphy_name(hw->wiphy),
 770                        (unsigned long long) info->basic_rates);
 771         }
 772 }
 773
 774 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 775                                       struct ieee80211_vif *vif,
 776                                       enum sta_notify_cmd cmd,
 777                                       struct ieee80211_sta *sta)
 778 {
 779         hwsim_check_magic(vif);
 780         switch (cmd) {
 781         case STA_NOTIFY_ADD:
 782                 hwsim_set_sta_magic(sta);
 783                 break;
 784         case STA_NOTIFY_REMOVE:
 785                 hwsim_clear_sta_magic(sta);
 786                 break;
 787         case STA_NOTIFY_SLEEP:
 788         case STA_NOTIFY_AWAKE:
 789                 /* TODO: make good use of these flags */
 790                 break;
 791         }
 792 }
 793
 794 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 795                                   struct ieee80211_sta *sta,
 796                                   bool set)
 797 {
 798         hwsim_check_sta_magic(sta);
 799         return 0;
 800 }
 801
 802 static int mac80211_hwsim_conf_tx(
 803         struct ieee80211_hw *hw, u16 queue,
 804         const struct ieee80211_tx_queue_params *params)
 805 {
 806         printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d "
 807                "aifs=%d)\n",
 808                wiphy_name(hw->wiphy), __func__, queue,
 809                params->txop, params->cw_min, params->cw_max, params->aifs);
 810         return 0;
 811 }
 812
 813 #ifdef CONFIG_NL80211_TESTMODE
 814 /*
 815  * This section contains example code for using netlink
 816  * attributes with the testmode command in nl80211.
 817  */
 818
 819 /* These enums need to be kept in sync with userspace */
 820 enum hwsim_testmode_attr {
 821         __HWSIM_TM_ATTR_INVALID = 0,
 822         HWSIM_TM_ATTR_CMD       = 1,
 823         HWSIM_TM_ATTR_PS        = 2,
 824
 825         /* keep last */
 826         __HWSIM_TM_ATTR_AFTER_LAST,
 827         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
 828 };
 829
 830 enum hwsim_testmode_cmd {
 831         HWSIM_TM_CMD_SET_PS             = 0,
 832         HWSIM_TM_CMD_GET_PS             = 1,
 833 };
 834
 835 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
 836         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
 837         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
 838 };
 839
 840 static int hwsim_fops_ps_write(void *dat, u64 val);
 841
 842 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
 843                                        void *data, int len)
 844 {
 845         struct mac80211_hwsim_data *hwsim = hw->priv;
 846         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
 847         struct sk_buff *skb;
 848         int err, ps;
 849
 850         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
 851                         hwsim_testmode_policy);
 852         if (err)
 853                 return err;
 854
 855         if (!tb[HWSIM_TM_ATTR_CMD])
 856                 return -EINVAL;
 857
 858         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
 859         case HWSIM_TM_CMD_SET_PS:
 860                 if (!tb[HWSIM_TM_ATTR_PS])
 861                         return -EINVAL;
 862                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
 863                 return hwsim_fops_ps_write(hwsim, ps);
 864         case HWSIM_TM_CMD_GET_PS:
 865                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
 866                                                 nla_total_size(sizeof(u32)));
 867                 if (!skb)
 868                         return -ENOMEM;
 869                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
 870                 return cfg80211_testmode_reply(skb);
 871         default:
 872                 return -EOPNOTSUPP;
 873         }
 874
 875  nla_put_failure:
 876         kfree_skb(skb);
 877         return -ENOBUFS;
 878 }
 879 #endif
 880
 881 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
 882                                        struct ieee80211_vif *vif,
 883                                        enum ieee80211_ampdu_mlme_action action,
 884                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn)
 885 {
 886         switch (action) {
 887         case IEEE80211_AMPDU_TX_START:
 888                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 889                 break;
 890         case IEEE80211_AMPDU_TX_STOP:
 891                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 892                 break;
 893         case IEEE80211_AMPDU_TX_OPERATIONAL:
 894                 break;
 895         case IEEE80211_AMPDU_RX_START:
 896         case IEEE80211_AMPDU_RX_STOP:
 897                 break;
 898         default:
 899                 return -EOPNOTSUPP;
 900         }
 901
 902         return 0;
 903 }
 904
 905 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
 906 {
 907         /*
 908          * In this special case, there's nothing we need to
 909          * do because hwsim does transmission synchronously.
 910          * In the future, when it does transmissions via
 911          * userspace, we may need to do something.
 912          */
 913 }
 914
 915 struct hw_scan_done {
 916         struct delayed_work w;
 917         struct ieee80211_hw *hw;
 918 };
 919
 920 static void hw_scan_done(struct work_struct *work)
 921 {
 922         struct hw_scan_done *hsd =
 923                 container_of(work, struct hw_scan_done, w.work);
 924
 925         ieee80211_scan_completed(hsd->hw, false);
 926         kfree(hsd);
 927 }
 928
 929 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
 930                                   struct cfg80211_scan_request *req)
 931 {
 932         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
 933         int i;
 934
 935         if (!hsd)
 936                 return -ENOMEM;
 937
 938         hsd->hw = hw;
 939         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
 940
 941         printk(KERN_DEBUG "hwsim scan request\n");
 942         for (i = 0; i < req->n_channels; i++)
 943                 printk(KERN_DEBUG "hwsim scan freq %d\n",
 944                         req->channels[i]->center_freq);
 945
 946         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
 947
 948         return 0;
 949 }
 950
 951 static struct ieee80211_ops mac80211_hwsim_ops =
 952 {
 953         .tx = mac80211_hwsim_tx,
 954         .start = mac80211_hwsim_start,
 955         .stop = mac80211_hwsim_stop,
 956         .add_interface = mac80211_hwsim_add_interface,
 957         .remove_interface = mac80211_hwsim_remove_interface,
 958         .config = mac80211_hwsim_config,
 959         .configure_filter = mac80211_hwsim_configure_filter,
 960         .bss_info_changed = mac80211_hwsim_bss_info_changed,
 961         .sta_notify = mac80211_hwsim_sta_notify,
 962         .set_tim = mac80211_hwsim_set_tim,
 963         .conf_tx = mac80211_hwsim_conf_tx,
 964         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
 965         .ampdu_action = mac80211_hwsim_ampdu_action,
 966         .flush = mac80211_hwsim_flush,
 967 };
 968
 969
 970 static void mac80211_hwsim_free(void)
 971 {
 972         struct list_head tmplist, *i, *tmp;
 973         struct mac80211_hwsim_data *data, *tmpdata;
 974
 975         INIT_LIST_HEAD(&tmplist);
 976
 977         spin_lock_bh(&hwsim_radio_lock);
 978         list_for_each_safe(i, tmp, &hwsim_radios)
 979                 list_move(i, &tmplist);
 980         spin_unlock_bh(&hwsim_radio_lock);
 981
 982         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
 983                 debugfs_remove(data->debugfs_group);
 984                 debugfs_remove(data->debugfs_ps);
 985                 debugfs_remove(data->debugfs);
 986                 ieee80211_unregister_hw(data->hw);
 987                 device_unregister(data->dev);
 988                 ieee80211_free_hw(data->hw);
 989         }
 990         class_destroy(hwsim_class);
 991 }
 992
 993
 994 static struct device_driver mac80211_hwsim_driver = {
 995         .name = "mac80211_hwsim"
 996 };
 997
 998 static const struct net_device_ops hwsim_netdev_ops = {
 999         .ndo_start_xmit         = hwsim_mon_xmit,
1000         .ndo_change_mtu         = eth_change_mtu,
1001         .ndo_set_mac_address    = eth_mac_addr,
1002         .ndo_validate_addr      = eth_validate_addr,
1003 };
1004
1005 static void hwsim_mon_setup(struct net_device *dev)
1006 {
1007         dev->netdev_ops = &hwsim_netdev_ops;
1008         dev->destructor = free_netdev;
1009         ether_setup(dev);
1010         dev->tx_queue_len = 0;
1011         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1012         memset(dev->dev_addr, 0, ETH_ALEN);
1013         dev->dev_addr[0] = 0x12;
1014 }
1015
1016
1017 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1018 {
1019         struct mac80211_hwsim_data *data = dat;
1020         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1021         struct sk_buff *skb;
1022         struct ieee80211_pspoll *pspoll;
1023
1024         if (!vp->assoc)
1025                 return;
1026
1027         printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n",
1028                wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid);
1029
1030         skb = dev_alloc_skb(sizeof(*pspoll));
1031         if (!skb)
1032                 return;
1033         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1034         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1035                                             IEEE80211_STYPE_PSPOLL |
1036                                             IEEE80211_FCTL_PM);
1037         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1038         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1039         memcpy(pspoll->ta, mac, ETH_ALEN);
1040         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1041                 printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__);
1042         dev_kfree_skb(skb);
1043 }
1044
1045
1046 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1047                                 struct ieee80211_vif *vif, int ps)
1048 {
1049         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1050         struct sk_buff *skb;
1051         struct ieee80211_hdr *hdr;
1052
1053         if (!vp->assoc)
1054                 return;
1055
1056         printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n",
1057                wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps);
1058
1059         skb = dev_alloc_skb(sizeof(*hdr));
1060         if (!skb)
1061                 return;
1062         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1063         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1064                                          IEEE80211_STYPE_NULLFUNC |
1065                                          (ps ? IEEE80211_FCTL_PM : 0));
1066         hdr->duration_id = cpu_to_le16(0);
1067         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1068         memcpy(hdr->addr2, mac, ETH_ALEN);
1069         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1070         if (!mac80211_hwsim_tx_frame(data->hw, skb))
1071                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1072         dev_kfree_skb(skb);
1073 }
1074
1075
1076 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1077                                    struct ieee80211_vif *vif)
1078 {
1079         struct mac80211_hwsim_data *data = dat;
1080         hwsim_send_nullfunc(data, mac, vif, 1);
1081 }
1082
1083
1084 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1085                                       struct ieee80211_vif *vif)
1086 {
1087         struct mac80211_hwsim_data *data = dat;
1088         hwsim_send_nullfunc(data, mac, vif, 0);
1089 }
1090
1091
1092 static int hwsim_fops_ps_read(void *dat, u64 *val)
1093 {
1094         struct mac80211_hwsim_data *data = dat;
1095         *val = data->ps;
1096         return 0;
1097 }
1098
1099 static int hwsim_fops_ps_write(void *dat, u64 val)
1100 {
1101         struct mac80211_hwsim_data *data = dat;
1102         enum ps_mode old_ps;
1103
1104         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1105             val != PS_MANUAL_POLL)
1106                 return -EINVAL;
1107
1108         old_ps = data->ps;
1109         data->ps = val;
1110
1111         if (val == PS_MANUAL_POLL) {
1112                 ieee80211_iterate_active_interfaces(data->hw,
1113                                                     hwsim_send_ps_poll, data);
1114                 data->ps_poll_pending = true;
1115         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1116                 ieee80211_iterate_active_interfaces(data->hw,
1117                                                     hwsim_send_nullfunc_ps,
1118                                                     data);
1119         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1120                 ieee80211_iterate_active_interfaces(data->hw,
1121                                                     hwsim_send_nullfunc_no_ps,
1122                                                     data);
1123         }
1124
1125         return 0;
1126 }
1127
1128 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1129                         "%llu\n");
1130
1131
1132 static int hwsim_fops_group_read(void *dat, u64 *val)
1133 {
1134         struct mac80211_hwsim_data *data = dat;
1135         *val = data->group;
1136         return 0;
1137 }
1138
1139 static int hwsim_fops_group_write(void *dat, u64 val)
1140 {
1141         struct mac80211_hwsim_data *data = dat;
1142         data->group = val;
1143         return 0;
1144 }
1145
1146 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1147                         hwsim_fops_group_read, hwsim_fops_group_write,
1148                         "%llx\n");
1149
1150 static int __init init_mac80211_hwsim(void)
1151 {
1152         int i, err = 0;
1153         u8 addr[ETH_ALEN];
1154         struct mac80211_hwsim_data *data;
1155         struct ieee80211_hw *hw;
1156         enum ieee80211_band band;
1157
1158         if (radios < 1 || radios > 100)
1159                 return -EINVAL;
1160
1161         if (fake_hw_scan)
1162                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1163
1164         spin_lock_init(&hwsim_radio_lock);
1165         INIT_LIST_HEAD(&hwsim_radios);
1166
1167         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1168         if (IS_ERR(hwsim_class))
1169                 return PTR_ERR(hwsim_class);
1170
1171         memset(addr, 0, ETH_ALEN);
1172         addr[0] = 0x02;
1173
1174         for (i = 0; i < radios; i++) {
1175                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1176                        i);
1177                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1178                 if (!hw) {
1179                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1180                                "failed\n");
1181                         err = -ENOMEM;
1182                         goto failed;
1183                 }
1184                 data = hw->priv;
1185                 data->hw = hw;
1186
1187                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1188                                           "hwsim%d", i);
1189                 if (IS_ERR(data->dev)) {
1190                         printk(KERN_DEBUG
1191                                "mac80211_hwsim: device_create "
1192                                "failed (%ld)\n", PTR_ERR(data->dev));
1193                         err = -ENOMEM;
1194                         goto failed_drvdata;
1195                 }
1196                 data->dev->driver = &mac80211_hwsim_driver;
1197
1198                 SET_IEEE80211_DEV(hw, data->dev);
1199                 addr[3] = i >> 8;
1200                 addr[4] = i;
1201                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1202                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1203                 data->addresses[1].addr[0] |= 0x40;
1204                 hw->wiphy->n_addresses = 2;
1205                 hw->wiphy->addresses = data->addresses;
1206
1207                 hw->channel_change_time = 1;
1208                 hw->queues = 4;
1209                 hw->wiphy->interface_modes =
1210                         BIT(NL80211_IFTYPE_STATION) |
1211                         BIT(NL80211_IFTYPE_AP) |
1212                         BIT(NL80211_IFTYPE_MESH_POINT);
1213
1214                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1215                             IEEE80211_HW_SIGNAL_DBM |
1216                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1217                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS;
1218
1219                 /* ask mac80211 to reserve space for magic */
1220                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1221                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1222
1223                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1224                         sizeof(hwsim_channels_2ghz));
1225                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1226                         sizeof(hwsim_channels_5ghz));
1227                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1228
1229                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1230                         struct ieee80211_supported_band *sband = &data->bands[band];
1231                         switch (band) {
1232                         case IEEE80211_BAND_2GHZ:
1233                                 sband->channels = data->channels_2ghz;
1234                                 sband->n_channels =
1235                                         ARRAY_SIZE(hwsim_channels_2ghz);
1236                                 sband->bitrates = data->rates;
1237                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1238                                 break;
1239                         case IEEE80211_BAND_5GHZ:
1240                                 sband->channels = data->channels_5ghz;
1241                                 sband->n_channels =
1242                                         ARRAY_SIZE(hwsim_channels_5ghz);
1243                                 sband->bitrates = data->rates + 4;
1244                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1245                                 break;
1246                         default:
1247                                 break;
1248                         }
1249
1250                         sband->ht_cap.ht_supported = true;
1251                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1252                                 IEEE80211_HT_CAP_GRN_FLD |
1253                                 IEEE80211_HT_CAP_SGI_40 |
1254                                 IEEE80211_HT_CAP_DSSSCCK40;
1255                         sband->ht_cap.ampdu_factor = 0x3;
1256                         sband->ht_cap.ampdu_density = 0x6;
1257                         memset(&sband->ht_cap.mcs, 0,
1258                                sizeof(sband->ht_cap.mcs));
1259                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1260                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1261                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1262
1263                         hw->wiphy->bands[band] = sband;
1264                 }
1265                 /* By default all radios are belonging to the first group */
1266                 data->group = 1;
1267
1268                 /* Work to be done prior to ieee80211_register_hw() */
1269                 switch (regtest) {
1270                 case HWSIM_REGTEST_DISABLED:
1271                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1272                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1273                 case HWSIM_REGTEST_DIFF_COUNTRY:
1274                         /*
1275                          * Nothing to be done for driver regulatory domain
1276                          * hints prior to ieee80211_register_hw()
1277                          */
1278                         break;
1279                 case HWSIM_REGTEST_WORLD_ROAM:
1280                         if (i == 0) {
1281                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1282                                 wiphy_apply_custom_regulatory(hw->wiphy,
1283                                         &hwsim_world_regdom_custom_01);
1284                         }
1285                         break;
1286                 case HWSIM_REGTEST_CUSTOM_WORLD:
1287                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1288                         wiphy_apply_custom_regulatory(hw->wiphy,
1289                                 &hwsim_world_regdom_custom_01);
1290                         break;
1291                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1292                         if (i == 0) {
1293                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1294                                 wiphy_apply_custom_regulatory(hw->wiphy,
1295                                         &hwsim_world_regdom_custom_01);
1296                         } else if (i == 1) {
1297                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1298                                 wiphy_apply_custom_regulatory(hw->wiphy,
1299                                         &hwsim_world_regdom_custom_02);
1300                         }
1301                         break;
1302                 case HWSIM_REGTEST_STRICT_ALL:
1303                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1304                         break;
1305                 case HWSIM_REGTEST_STRICT_FOLLOW:
1306                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1307                         if (i == 0)
1308                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1309                         break;
1310                 case HWSIM_REGTEST_ALL:
1311                         if (i == 0) {
1312                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1313                                 wiphy_apply_custom_regulatory(hw->wiphy,
1314                                         &hwsim_world_regdom_custom_01);
1315                         } else if (i == 1) {
1316                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1317                                 wiphy_apply_custom_regulatory(hw->wiphy,
1318                                         &hwsim_world_regdom_custom_02);
1319                         } else if (i == 4)
1320                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1321                         break;
1322                 default:
1323                         break;
1324                 }
1325
1326                 /* give the regulatory workqueue a chance to run */
1327                 if (regtest)
1328                         schedule_timeout_interruptible(1);
1329                 err = ieee80211_register_hw(hw);
1330                 if (err < 0) {
1331                         printk(KERN_DEBUG "mac80211_hwsim: "
1332                                "ieee80211_register_hw failed (%d)\n", err);
1333                         goto failed_hw;
1334                 }
1335
1336                 /* Work to be done after to ieee80211_register_hw() */
1337                 switch (regtest) {
1338                 case HWSIM_REGTEST_WORLD_ROAM:
1339                 case HWSIM_REGTEST_DISABLED:
1340                         break;
1341                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1342                         if (!i)
1343                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1344                         break;
1345                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1346                 case HWSIM_REGTEST_STRICT_ALL:
1347                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1348                         break;
1349                 case HWSIM_REGTEST_DIFF_COUNTRY:
1350                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1351                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1352                         break;
1353                 case HWSIM_REGTEST_CUSTOM_WORLD:
1354                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1355                         /*
1356                          * Nothing to be done for custom world regulatory
1357                          * domains after to ieee80211_register_hw
1358                          */
1359                         break;
1360                 case HWSIM_REGTEST_STRICT_FOLLOW:
1361                         if (i == 0)
1362                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1363                         break;
1364                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1365                         if (i == 0)
1366                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1367                         else if (i == 1)
1368                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1369                         break;
1370                 case HWSIM_REGTEST_ALL:
1371                         if (i == 2)
1372                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1373                         else if (i == 3)
1374                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1375                         else if (i == 4)
1376                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1377                         break;
1378                 default:
1379                         break;
1380                 }
1381
1382                 printk(KERN_DEBUG "%s: hwaddr %pM registered\n",
1383                        wiphy_name(hw->wiphy),
1384                        hw->wiphy->perm_addr);
1385
1386                 data->debugfs = debugfs_create_dir("hwsim",
1387                                                    hw->wiphy->debugfsdir);
1388                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1389                                                        data->debugfs, data,
1390                                                        &hwsim_fops_ps);
1391                 data->debugfs_group = debugfs_create_file("group", 0666,
1392                                                         data->debugfs, data,
1393                                                         &hwsim_fops_group);
1394
1395                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1396                             (unsigned long) hw);
1397
1398                 list_add_tail(&data->list, &hwsim_radios);
1399         }
1400
1401         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1402         if (hwsim_mon == NULL)
1403                 goto failed;
1404
1405         rtnl_lock();
1406
1407         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1408         if (err < 0)
1409                 goto failed_mon;
1410
1411
1412         err = register_netdevice(hwsim_mon);
1413         if (err < 0)
1414                 goto failed_mon;
1415
1416         rtnl_unlock();
1417
1418         return 0;
1419
1420 failed_mon:
1421         rtnl_unlock();
1422         free_netdev(hwsim_mon);
1423         mac80211_hwsim_free();
1424         return err;
1425
1426 failed_hw:
1427         device_unregister(data->dev);
1428 failed_drvdata:
1429         ieee80211_free_hw(hw);
1430 failed:
1431         mac80211_hwsim_free();
1432         return err;
1433 }
1434
1435
1436 static void __exit exit_mac80211_hwsim(void)
1437 {
1438         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1439
1440         mac80211_hwsim_free();
1441         unregister_netdev(hwsim_mon);
1442 }
1443
1444
1445 module_init(init_mac80211_hwsim);
1446 module_exit(exit_mac80211_hwsim);