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  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/debugfs.h>
  29 #include <net/genetlink.h>
  30 #include "mac80211_hwsim.h"
  31
  32 #define WARN_QUEUE 100
  33 #define MAX_QUEUE 200
  34
  35 MODULE_AUTHOR("Jouni Malinen");
  36 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  37 MODULE_LICENSE("GPL");
  38
  39 int wmediumd_pid;
  40 static int radios = 2;
  41 module_param(radios, int, 0444);
  42 MODULE_PARM_DESC(radios, "Number of simulated radios");
  43
  44 static bool fake_hw_scan;
  45 module_param(fake_hw_scan, bool, 0444);
  46 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
  47
  48 /**
  49  * enum hwsim_regtest - the type of regulatory tests we offer
  50  *
  51  * These are the different values you can use for the regtest
  52  * module parameter. This is useful to help test world roaming
  53  * and the driver regulatory_hint() call and combinations of these.
  54  * If you want to do specific alpha2 regulatory domain tests simply
  55  * use the userspace regulatory request as that will be respected as
  56  * well without the need of this module parameter. This is designed
  57  * only for testing the driver regulatory request, world roaming
  58  * and all possible combinations.
  59  *
  60  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  61  *      this is the default value.
  62  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  63  *      hint, only one driver regulatory hint will be sent as such the
  64  *      secondary radios are expected to follow.
  65  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  66  *      request with all radios reporting the same regulatory domain.
  67  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  68  *      different regulatory domains requests. Expected behaviour is for
  69  *      an intersection to occur but each device will still use their
  70  *      respective regulatory requested domains. Subsequent radios will
  71  *      use the resulting intersection.
  72  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  73  *      this by using a custom beacon-capable regulatory domain for the first
  74  *      radio. All other device world roam.
  75  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  76  *      domain requests. All radios will adhere to this custom world regulatory
  77  *      domain.
  78  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  79  *      domain requests. The first radio will adhere to the first custom world
  80  *      regulatory domain, the second one to the second custom world regulatory
  81  *      domain. All other devices will world roam.
  82  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  83  *      settings, only the first radio will send a regulatory domain request
  84  *      and use strict settings. The rest of the radios are expected to follow.
  85  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  86  *      settings. All radios will adhere to this.
  87  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  88  *      domain settings, combined with secondary driver regulatory domain
  89  *      settings. The first radio will get a strict regulatory domain setting
  90  *      using the first driver regulatory request and the second radio will use
  91  *      non-strict settings using the second driver regulatory request. All
  92  *      other devices should follow the intersection created between the
  93  *      first two.
  94  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  95  *      at least 6 radios for a complete test. We will test in this order:
  96  *      1 - driver custom world regulatory domain
  97  *      2 - second custom world regulatory domain
  98  *      3 - first driver regulatory domain request
  99  *      4 - second driver regulatory domain request
 100  *      5 - strict regulatory domain settings using the third driver regulatory
 101  *          domain request
 102  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 103  *                 regulatory requests.
 104  */
 105 enum hwsim_regtest {
 106         HWSIM_REGTEST_DISABLED = 0,
 107         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 108         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 109         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 110         HWSIM_REGTEST_WORLD_ROAM = 4,
 111         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 112         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 113         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 114         HWSIM_REGTEST_STRICT_ALL = 8,
 115         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 116         HWSIM_REGTEST_ALL = 10,
 117 };
 118
 119 /* Set to one of the HWSIM_REGTEST_* values above */
 120 static int regtest = HWSIM_REGTEST_DISABLED;
 121 module_param(regtest, int, 0444);
 122 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 123
 124 static const char *hwsim_alpha2s[] = {
 125         "FI",
 126         "AL",
 127         "US",
 128         "DE",
 129         "JP",
 130         "AL",
 131 };
 132
 133 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 134         .n_reg_rules = 4,
 135         .alpha2 =  "99",
 136         .reg_rules = {
 137                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 138                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 139                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 140                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 141         }
 142 };
 143
 144 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 145         .n_reg_rules = 2,
 146         .alpha2 =  "99",
 147         .reg_rules = {
 148                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 149                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 150                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 151         }
 152 };
 153
 154 struct hwsim_vif_priv {
 155         u32 magic;
 156         u8 bssid[ETH_ALEN];
 157         bool assoc;
 158         u16 aid;
 159 };
 160
 161 #define HWSIM_VIF_MAGIC 0x69537748
 162
 163 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 164 {
 165         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 166         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 167 }
 168
 169 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 170 {
 171         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 172         vp->magic = HWSIM_VIF_MAGIC;
 173 }
 174
 175 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 176 {
 177         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 178         vp->magic = 0;
 179 }
 180
 181 struct hwsim_sta_priv {
 182         u32 magic;
 183 };
 184
 185 #define HWSIM_STA_MAGIC 0x6d537748
 186
 187 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 188 {
 189         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 190         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 191 }
 192
 193 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 194 {
 195         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 196         sp->magic = HWSIM_STA_MAGIC;
 197 }
 198
 199 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 200 {
 201         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 202         sp->magic = 0;
 203 }
 204
 205 static struct class *hwsim_class;
 206
 207 static struct net_device *hwsim_mon; /* global monitor netdev */
 208
 209 #define CHAN2G(_freq)  { \
 210         .band = IEEE80211_BAND_2GHZ, \
 211         .center_freq = (_freq), \
 212         .hw_value = (_freq), \
 213         .max_power = 20, \
 214 }
 215
 216 #define CHAN5G(_freq) { \
 217         .band = IEEE80211_BAND_5GHZ, \
 218         .center_freq = (_freq), \
 219         .hw_value = (_freq), \
 220         .max_power = 20, \
 221 }
 222
 223 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 224         CHAN2G(2412), /* Channel 1 */
 225         CHAN2G(2417), /* Channel 2 */
 226         CHAN2G(2422), /* Channel 3 */
 227         CHAN2G(2427), /* Channel 4 */
 228         CHAN2G(2432), /* Channel 5 */
 229         CHAN2G(2437), /* Channel 6 */
 230         CHAN2G(2442), /* Channel 7 */
 231         CHAN2G(2447), /* Channel 8 */
 232         CHAN2G(2452), /* Channel 9 */
 233         CHAN2G(2457), /* Channel 10 */
 234         CHAN2G(2462), /* Channel 11 */
 235         CHAN2G(2467), /* Channel 12 */
 236         CHAN2G(2472), /* Channel 13 */
 237         CHAN2G(2484), /* Channel 14 */
 238 };
 239
 240 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 241         CHAN5G(5180), /* Channel 36 */
 242         CHAN5G(5200), /* Channel 40 */
 243         CHAN5G(5220), /* Channel 44 */
 244         CHAN5G(5240), /* Channel 48 */
 245
 246         CHAN5G(5260), /* Channel 52 */
 247         CHAN5G(5280), /* Channel 56 */
 248         CHAN5G(5300), /* Channel 60 */
 249         CHAN5G(5320), /* Channel 64 */
 250
 251         CHAN5G(5500), /* Channel 100 */
 252         CHAN5G(5520), /* Channel 104 */
 253         CHAN5G(5540), /* Channel 108 */
 254         CHAN5G(5560), /* Channel 112 */
 255         CHAN5G(5580), /* Channel 116 */
 256         CHAN5G(5600), /* Channel 120 */
 257         CHAN5G(5620), /* Channel 124 */
 258         CHAN5G(5640), /* Channel 128 */
 259         CHAN5G(5660), /* Channel 132 */
 260         CHAN5G(5680), /* Channel 136 */
 261         CHAN5G(5700), /* Channel 140 */
 262
 263         CHAN5G(5745), /* Channel 149 */
 264         CHAN5G(5765), /* Channel 153 */
 265         CHAN5G(5785), /* Channel 157 */
 266         CHAN5G(5805), /* Channel 161 */
 267         CHAN5G(5825), /* Channel 165 */
 268 };
 269
 270 static const struct ieee80211_rate hwsim_rates[] = {
 271         { .bitrate = 10 },
 272         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 273         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 274         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 275         { .bitrate = 60 },
 276         { .bitrate = 90 },
 277         { .bitrate = 120 },
 278         { .bitrate = 180 },
 279         { .bitrate = 240 },
 280         { .bitrate = 360 },
 281         { .bitrate = 480 },
 282         { .bitrate = 540 }
 283 };
 284
 285 static spinlock_t hwsim_radio_lock;
 286 static struct list_head hwsim_radios;
 287
 288 struct mac80211_hwsim_data {
 289         struct list_head list;
 290         struct ieee80211_hw *hw;
 291         struct device *dev;
 292         struct ieee80211_supported_band bands[2];
 293         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 294         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 295         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 296
 297         struct mac_address addresses[2];
 298
 299         struct ieee80211_channel *channel;
 300         unsigned long beacon_int; /* in jiffies unit */
 301         unsigned int rx_filter;
 302         bool started, idle, scanning;
 303         struct mutex mutex;
 304         struct timer_list beacon_timer;
 305         enum ps_mode {
 306                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 307         } ps;
 308         bool ps_poll_pending;
 309         struct dentry *debugfs;
 310         struct dentry *debugfs_ps;
 311
 312         struct sk_buff_head pending;    /* packets pending */
 313         /*
 314          * Only radios in the same group can communicate together (the
 315          * channel has to match too). Each bit represents a group. A
 316          * radio can be in more then one group.
 317          */
 318         u64 group;
 319         struct dentry *debugfs_group;
 320
 321         int power_level;
 322 };
 323
 324
 325 struct hwsim_radiotap_hdr {
 326         struct ieee80211_radiotap_header hdr;
 327         u8 rt_flags;
 328         u8 rt_rate;
 329         __le16 rt_channel;
 330         __le16 rt_chbitmask;
 331 } __packed;
 332
 333 /* MAC80211_HWSIM netlinf family */
 334 static struct genl_family hwsim_genl_family = {
 335         .id = GENL_ID_GENERATE,
 336         .hdrsize = 0,
 337         .name = "MAC80211_HWSIM",
 338         .version = 1,
 339         .maxattr = HWSIM_ATTR_MAX,
 340 };
 341
 342 /* MAC80211_HWSIM netlink policy */
 343
 344 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 345         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 346                                        .len = 6*sizeof(u8) },
 347         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 348                                           .len = 6*sizeof(u8) },
 349         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 350                                .len = IEEE80211_MAX_DATA_LEN },
 351         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 352         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 353         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 354         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 355                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 356                                         struct hwsim_tx_rate)},
 357         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 358 };
 359
 360 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 361                                         struct net_device *dev)
 362 {
 363         /* TODO: allow packet injection */
 364         dev_kfree_skb(skb);
 365         return NETDEV_TX_OK;
 366 }
 367
 368
 369 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 370                                       struct sk_buff *tx_skb)
 371 {
 372         struct mac80211_hwsim_data *data = hw->priv;
 373         struct sk_buff *skb;
 374         struct hwsim_radiotap_hdr *hdr;
 375         u16 flags;
 376         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 377         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 378
 379         if (!netif_running(hwsim_mon))
 380                 return;
 381
 382         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 383         if (skb == NULL)
 384                 return;
 385
 386         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 387         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 388         hdr->hdr.it_pad = 0;
 389         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 390         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 391                                           (1 << IEEE80211_RADIOTAP_RATE) |
 392                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 393         hdr->rt_flags = 0;
 394         hdr->rt_rate = txrate->bitrate / 5;
 395         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 396         flags = IEEE80211_CHAN_2GHZ;
 397         if (txrate->flags & IEEE80211_RATE_ERP_G)
 398                 flags |= IEEE80211_CHAN_OFDM;
 399         else
 400                 flags |= IEEE80211_CHAN_CCK;
 401         hdr->rt_chbitmask = cpu_to_le16(flags);
 402
 403         skb->dev = hwsim_mon;
 404         skb_set_mac_header(skb, 0);
 405         skb->ip_summed = CHECKSUM_UNNECESSARY;
 406         skb->pkt_type = PACKET_OTHERHOST;
 407         skb->protocol = htons(ETH_P_802_2);
 408         memset(skb->cb, 0, sizeof(skb->cb));
 409         netif_rx(skb);
 410 }
 411
 412
 413 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 414 {
 415         struct mac80211_hwsim_data *data = hw->priv;
 416         struct sk_buff *skb;
 417         struct hwsim_radiotap_hdr *hdr;
 418         u16 flags;
 419         struct ieee80211_hdr *hdr11;
 420
 421         if (!netif_running(hwsim_mon))
 422                 return;
 423
 424         skb = dev_alloc_skb(100);
 425         if (skb == NULL)
 426                 return;
 427
 428         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 429         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 430         hdr->hdr.it_pad = 0;
 431         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 432         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 433                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 434         hdr->rt_flags = 0;
 435         hdr->rt_rate = 0;
 436         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 437         flags = IEEE80211_CHAN_2GHZ;
 438         hdr->rt_chbitmask = cpu_to_le16(flags);
 439
 440         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 441         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 442                                            IEEE80211_STYPE_ACK);
 443         hdr11->duration_id = cpu_to_le16(0);
 444         memcpy(hdr11->addr1, addr, ETH_ALEN);
 445
 446         skb->dev = hwsim_mon;
 447         skb_set_mac_header(skb, 0);
 448         skb->ip_summed = CHECKSUM_UNNECESSARY;
 449         skb->pkt_type = PACKET_OTHERHOST;
 450         skb->protocol = htons(ETH_P_802_2);
 451         memset(skb->cb, 0, sizeof(skb->cb));
 452         netif_rx(skb);
 453 }
 454
 455
 456 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 457                            struct sk_buff *skb)
 458 {
 459         switch (data->ps) {
 460         case PS_DISABLED:
 461                 return true;
 462         case PS_ENABLED:
 463                 return false;
 464         case PS_AUTO_POLL:
 465                 /* TODO: accept (some) Beacons by default and other frames only
 466                  * if pending PS-Poll has been sent */
 467                 return true;
 468         case PS_MANUAL_POLL:
 469                 /* Allow unicast frames to own address if there is a pending
 470                  * PS-Poll */
 471                 if (data->ps_poll_pending &&
 472                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 473                            ETH_ALEN) == 0) {
 474                         data->ps_poll_pending = false;
 475                         return true;
 476                 }
 477                 return false;
 478         }
 479
 480         return true;
 481 }
 482
 483
 484 struct mac80211_hwsim_addr_match_data {
 485         bool ret;
 486         const u8 *addr;
 487 };
 488
 489 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 490                                      struct ieee80211_vif *vif)
 491 {
 492         struct mac80211_hwsim_addr_match_data *md = data;
 493         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 494                 md->ret = true;
 495 }
 496
 497
 498 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 499                                       const u8 *addr)
 500 {
 501         struct mac80211_hwsim_addr_match_data md;
 502
 503         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 504                 return true;
 505
 506         md.ret = false;
 507         md.addr = addr;
 508         ieee80211_iterate_active_interfaces_atomic(data->hw,
 509                                                    mac80211_hwsim_addr_iter,
 510                                                    &md);
 511
 512         return md.ret;
 513 }
 514
 515 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 516                                        struct sk_buff *my_skb,
 517                                        int dst_pid)
 518 {
 519         struct sk_buff *skb;
 520         struct mac80211_hwsim_data *data = hw->priv;
 521         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 522         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 523         void *msg_head;
 524         unsigned int hwsim_flags = 0;
 525         int i;
 526         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 527
 528         if (data->idle) {
 529                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 530                 dev_kfree_skb(my_skb);
 531                 return;
 532         }
 533
 534         if (data->ps != PS_DISABLED)
 535                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 536         /* If the queue contains MAX_QUEUE skb's drop some */
 537         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 538                 /* Droping until WARN_QUEUE level */
 539                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 540                         skb_dequeue(&data->pending);
 541         }
 542
 543         skb = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
 544         if (skb == NULL)
 545                 goto nla_put_failure;
 546
 547         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 548                                HWSIM_CMD_FRAME);
 549         if (msg_head == NULL) {
 550                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 551                 goto nla_put_failure;
 552         }
 553
 554         NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 555                      sizeof(struct mac_address), data->addresses[1].addr);
 556
 557         /* We get the skb->data */
 558         NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
 559
 560         /* We get the flags for this transmission, and we translate them to
 561            wmediumd flags  */
 562
 563         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 564                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 565
 566         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 567                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 568
 569         NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
 570
 571         /* We get the tx control (rate and retries) info*/
 572
 573         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 574                 tx_attempts[i].idx = info->status.rates[i].idx;
 575                 tx_attempts[i].count = info->status.rates[i].count;
 576         }
 577
 578         NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
 579                      sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 580                      tx_attempts);
 581
 582         /* We create a cookie to identify this skb */
 583         NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
 584
 585         genlmsg_end(skb, msg_head);
 586         genlmsg_unicast(&init_net, skb, dst_pid);
 587
 588         /* Enqueue the packet */
 589         skb_queue_tail(&data->pending, my_skb);
 590         return;
 591
 592 nla_put_failure:
 593         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
 594 }
 595
 596 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 597                                           struct sk_buff *skb)
 598 {
 599         struct mac80211_hwsim_data *data = hw->priv, *data2;
 600         bool ack = false;
 601         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 602         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 603         struct ieee80211_rx_status rx_status;
 604
 605         if (data->idle) {
 606                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 607                 return false;
 608         }
 609
 610         memset(&rx_status, 0, sizeof(rx_status));
 611         /* TODO: set mactime */
 612         rx_status.freq = data->channel->center_freq;
 613         rx_status.band = data->channel->band;
 614         rx_status.rate_idx = info->control.rates[0].idx;
 615         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 616                 rx_status.flag |= RX_FLAG_HT;
 617         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 618                 rx_status.flag |= RX_FLAG_40MHZ;
 619         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 620                 rx_status.flag |= RX_FLAG_SHORT_GI;
 621         /* TODO: simulate real signal strength (and optional packet loss) */
 622         rx_status.signal = data->power_level - 50;
 623
 624         if (data->ps != PS_DISABLED)
 625                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 626
 627         /* release the skb's source info */
 628         skb_orphan(skb);
 629         skb_dst_drop(skb);
 630         skb->mark = 0;
 631         secpath_reset(skb);
 632         nf_reset(skb);
 633
 634         /* Copy skb to all enabled radios that are on the current frequency */
 635         spin_lock(&hwsim_radio_lock);
 636         list_for_each_entry(data2, &hwsim_radios, list) {
 637                 struct sk_buff *nskb;
 638
 639                 if (data == data2)
 640                         continue;
 641
 642                 if (data2->idle || !data2->started ||
 643                     !hwsim_ps_rx_ok(data2, skb) ||
 644                     !data->channel || !data2->channel ||
 645                     data->channel->center_freq != data2->channel->center_freq ||
 646                     !(data->group & data2->group))
 647                         continue;
 648
 649                 nskb = skb_copy(skb, GFP_ATOMIC);
 650                 if (nskb == NULL)
 651                         continue;
 652
 653                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 654                         ack = true;
 655                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 656                 ieee80211_rx_irqsafe(data2->hw, nskb);
 657         }
 658         spin_unlock(&hwsim_radio_lock);
 659
 660         return ack;
 661 }
 662
 663 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 664 {
 665         bool ack;
 666         struct ieee80211_tx_info *txi;
 667         int _pid;
 668
 669         mac80211_hwsim_monitor_rx(hw, skb);
 670
 671         if (skb->len < 10) {
 672                 /* Should not happen; just a sanity check for addr1 use */
 673                 dev_kfree_skb(skb);
 674                 return;
 675         }
 676
 677         /* wmediumd mode check */
 678         _pid = wmediumd_pid;
 679
 680         if (_pid)
 681                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 682
 683         /* NO wmediumd detected, perfect medium simulation */
 684         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
 685
 686         if (ack && skb->len >= 16) {
 687                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 688                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 689         }
 690
 691         txi = IEEE80211_SKB_CB(skb);
 692
 693         if (txi->control.vif)
 694                 hwsim_check_magic(txi->control.vif);
 695         if (txi->control.sta)
 696                 hwsim_check_sta_magic(txi->control.sta);
 697
 698         ieee80211_tx_info_clear_status(txi);
 699         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 700                 txi->flags |= IEEE80211_TX_STAT_ACK;
 701         ieee80211_tx_status_irqsafe(hw, skb);
 702 }
 703
 704
 705 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 706 {
 707         struct mac80211_hwsim_data *data = hw->priv;
 708         wiphy_debug(hw->wiphy, "%s\n", __func__);
 709         data->started = 1;
 710         return 0;
 711 }
 712
 713
 714 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 715 {
 716         struct mac80211_hwsim_data *data = hw->priv;
 717         data->started = 0;
 718         del_timer(&data->beacon_timer);
 719         wiphy_debug(hw->wiphy, "%s\n", __func__);
 720 }
 721
 722
 723 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 724                                         struct ieee80211_vif *vif)
 725 {
 726         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 727                     __func__, ieee80211_vif_type_p2p(vif),
 728                     vif->addr);
 729         hwsim_set_magic(vif);
 730         return 0;
 731 }
 732
 733
 734 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 735                                            struct ieee80211_vif *vif,
 736                                            enum nl80211_iftype newtype,
 737                                            bool newp2p)
 738 {
 739         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 740         wiphy_debug(hw->wiphy,
 741                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 742                     __func__, ieee80211_vif_type_p2p(vif),
 743                     newtype, vif->addr);
 744         hwsim_check_magic(vif);
 745
 746         return 0;
 747 }
 748
 749 static void mac80211_hwsim_remove_interface(
 750         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 751 {
 752         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 753                     __func__, ieee80211_vif_type_p2p(vif),
 754                     vif->addr);
 755         hwsim_check_magic(vif);
 756         hwsim_clear_magic(vif);
 757 }
 758
 759
 760 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 761                                      struct ieee80211_vif *vif)
 762 {
 763         struct ieee80211_hw *hw = arg;
 764         struct sk_buff *skb;
 765         struct ieee80211_tx_info *info;
 766         int _pid;
 767
 768         hwsim_check_magic(vif);
 769
 770         if (vif->type != NL80211_IFTYPE_AP &&
 771             vif->type != NL80211_IFTYPE_MESH_POINT &&
 772             vif->type != NL80211_IFTYPE_ADHOC)
 773                 return;
 774
 775         skb = ieee80211_beacon_get(hw, vif);
 776         if (skb == NULL)
 777                 return;
 778         info = IEEE80211_SKB_CB(skb);
 779
 780         mac80211_hwsim_monitor_rx(hw, skb);
 781
 782         /* wmediumd mode check */
 783         _pid = wmediumd_pid;
 784
 785         if (_pid)
 786                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 787
 788         mac80211_hwsim_tx_frame_no_nl(hw, skb);
 789         dev_kfree_skb(skb);
 790 }
 791
 792
 793 static void mac80211_hwsim_beacon(unsigned long arg)
 794 {
 795         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 796         struct mac80211_hwsim_data *data = hw->priv;
 797
 798         if (!data->started)
 799                 return;
 800
 801         ieee80211_iterate_active_interfaces_atomic(
 802                 hw, mac80211_hwsim_beacon_tx, hw);
 803
 804         data->beacon_timer.expires = jiffies + data->beacon_int;
 805         add_timer(&data->beacon_timer);
 806 }
 807
 808 static const char *hwsim_chantypes[] = {
 809         [NL80211_CHAN_NO_HT] = "noht",
 810         [NL80211_CHAN_HT20] = "ht20",
 811         [NL80211_CHAN_HT40MINUS] = "ht40-",
 812         [NL80211_CHAN_HT40PLUS] = "ht40+",
 813 };
 814
 815 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 816 {
 817         struct mac80211_hwsim_data *data = hw->priv;
 818         struct ieee80211_conf *conf = &hw->conf;
 819         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 820                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 821                 [IEEE80211_SMPS_OFF] = "off",
 822                 [IEEE80211_SMPS_STATIC] = "static",
 823                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 824         };
 825
 826         wiphy_debug(hw->wiphy,
 827                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 828                     __func__,
 829                     conf->channel->center_freq,
 830                     hwsim_chantypes[conf->channel_type],
 831                     !!(conf->flags & IEEE80211_CONF_IDLE),
 832                     !!(conf->flags & IEEE80211_CONF_PS),
 833                     smps_modes[conf->smps_mode]);
 834
 835         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 836
 837         data->channel = conf->channel;
 838         data->power_level = conf->power_level;
 839         if (!data->started || !data->beacon_int)
 840                 del_timer(&data->beacon_timer);
 841         else
 842                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 843
 844         return 0;
 845 }
 846
 847
 848 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 849                                             unsigned int changed_flags,
 850                                             unsigned int *total_flags,u64 multicast)
 851 {
 852         struct mac80211_hwsim_data *data = hw->priv;
 853
 854         wiphy_debug(hw->wiphy, "%s\n", __func__);
 855
 856         data->rx_filter = 0;
 857         if (*total_flags & FIF_PROMISC_IN_BSS)
 858                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 859         if (*total_flags & FIF_ALLMULTI)
 860                 data->rx_filter |= FIF_ALLMULTI;
 861
 862         *total_flags = data->rx_filter;
 863 }
 864
 865 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 866                                             struct ieee80211_vif *vif,
 867                                             struct ieee80211_bss_conf *info,
 868                                             u32 changed)
 869 {
 870         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 871         struct mac80211_hwsim_data *data = hw->priv;
 872
 873         hwsim_check_magic(vif);
 874
 875         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
 876
 877         if (changed & BSS_CHANGED_BSSID) {
 878                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
 879                             __func__, info->bssid);
 880                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 881         }
 882
 883         if (changed & BSS_CHANGED_ASSOC) {
 884                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
 885                             info->assoc, info->aid);
 886                 vp->assoc = info->assoc;
 887                 vp->aid = info->aid;
 888         }
 889
 890         if (changed & BSS_CHANGED_BEACON_INT) {
 891                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
 892                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 893                 if (WARN_ON(!data->beacon_int))
 894                         data->beacon_int = 1;
 895                 if (data->started)
 896                         mod_timer(&data->beacon_timer,
 897                                   jiffies + data->beacon_int);
 898         }
 899
 900         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 901                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
 902                             info->use_cts_prot);
 903         }
 904
 905         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 906                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
 907                             info->use_short_preamble);
 908         }
 909
 910         if (changed & BSS_CHANGED_ERP_SLOT) {
 911                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
 912         }
 913
 914         if (changed & BSS_CHANGED_HT) {
 915                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
 916                             info->ht_operation_mode,
 917                             hwsim_chantypes[info->channel_type]);
 918         }
 919
 920         if (changed & BSS_CHANGED_BASIC_RATES) {
 921                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
 922                             (unsigned long long) info->basic_rates);
 923         }
 924 }
 925
 926 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 927                                   struct ieee80211_vif *vif,
 928                                   struct ieee80211_sta *sta)
 929 {
 930         hwsim_check_magic(vif);
 931         hwsim_set_sta_magic(sta);
 932
 933         return 0;
 934 }
 935
 936 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 937                                      struct ieee80211_vif *vif,
 938                                      struct ieee80211_sta *sta)
 939 {
 940         hwsim_check_magic(vif);
 941         hwsim_clear_sta_magic(sta);
 942
 943         return 0;
 944 }
 945
 946 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 947                                       struct ieee80211_vif *vif,
 948                                       enum sta_notify_cmd cmd,
 949                                       struct ieee80211_sta *sta)
 950 {
 951         hwsim_check_magic(vif);
 952
 953         switch (cmd) {
 954         case STA_NOTIFY_SLEEP:
 955         case STA_NOTIFY_AWAKE:
 956                 /* TODO: make good use of these flags */
 957                 break;
 958         default:
 959                 WARN(1, "Invalid sta notify: %d\n", cmd);
 960                 break;
 961         }
 962 }
 963
 964 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 965                                   struct ieee80211_sta *sta,
 966                                   bool set)
 967 {
 968         hwsim_check_sta_magic(sta);
 969         return 0;
 970 }
 971
 972 static int mac80211_hwsim_conf_tx(
 973         struct ieee80211_hw *hw,
 974         struct ieee80211_vif *vif, u16 queue,
 975         const struct ieee80211_tx_queue_params *params)
 976 {
 977         wiphy_debug(hw->wiphy,
 978                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
 979                     __func__, queue,
 980                     params->txop, params->cw_min,
 981                     params->cw_max, params->aifs);
 982         return 0;
 983 }
 984
 985 static int mac80211_hwsim_get_survey(
 986         struct ieee80211_hw *hw, int idx,
 987         struct survey_info *survey)
 988 {
 989         struct ieee80211_conf *conf = &hw->conf;
 990
 991         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
 992
 993         if (idx != 0)
 994                 return -ENOENT;
 995
 996         /* Current channel */
 997         survey->channel = conf->channel;
 998
 999         /*
1000          * Magically conjured noise level --- this is only ok for simulated hardware.
1001          *
1002          * A real driver which cannot determine the real channel noise MUST NOT
1003          * report any noise, especially not a magically conjured one :-)
1004          */
1005         survey->filled = SURVEY_INFO_NOISE_DBM;
1006         survey->noise = -92;
1007
1008         return 0;
1009 }
1010
1011 #ifdef CONFIG_NL80211_TESTMODE
1012 /*
1013  * This section contains example code for using netlink
1014  * attributes with the testmode command in nl80211.
1015  */
1016
1017 /* These enums need to be kept in sync with userspace */
1018 enum hwsim_testmode_attr {
1019         __HWSIM_TM_ATTR_INVALID = 0,
1020         HWSIM_TM_ATTR_CMD       = 1,
1021         HWSIM_TM_ATTR_PS        = 2,
1022
1023         /* keep last */
1024         __HWSIM_TM_ATTR_AFTER_LAST,
1025         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1026 };
1027
1028 enum hwsim_testmode_cmd {
1029         HWSIM_TM_CMD_SET_PS             = 0,
1030         HWSIM_TM_CMD_GET_PS             = 1,
1031 };
1032
1033 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1034         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1035         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1036 };
1037
1038 static int hwsim_fops_ps_write(void *dat, u64 val);
1039
1040 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1041                                        void *data, int len)
1042 {
1043         struct mac80211_hwsim_data *hwsim = hw->priv;
1044         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1045         struct sk_buff *skb;
1046         int err, ps;
1047
1048         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1049                         hwsim_testmode_policy);
1050         if (err)
1051                 return err;
1052
1053         if (!tb[HWSIM_TM_ATTR_CMD])
1054                 return -EINVAL;
1055
1056         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1057         case HWSIM_TM_CMD_SET_PS:
1058                 if (!tb[HWSIM_TM_ATTR_PS])
1059                         return -EINVAL;
1060                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1061                 return hwsim_fops_ps_write(hwsim, ps);
1062         case HWSIM_TM_CMD_GET_PS:
1063                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1064                                                 nla_total_size(sizeof(u32)));
1065                 if (!skb)
1066                         return -ENOMEM;
1067                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
1068                 return cfg80211_testmode_reply(skb);
1069         default:
1070                 return -EOPNOTSUPP;
1071         }
1072
1073  nla_put_failure:
1074         kfree_skb(skb);
1075         return -ENOBUFS;
1076 }
1077 #endif
1078
1079 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1080                                        struct ieee80211_vif *vif,
1081                                        enum ieee80211_ampdu_mlme_action action,
1082                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1083                                        u8 buf_size)
1084 {
1085         switch (action) {
1086         case IEEE80211_AMPDU_TX_START:
1087                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1088                 break;
1089         case IEEE80211_AMPDU_TX_STOP:
1090                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1091                 break;
1092         case IEEE80211_AMPDU_TX_OPERATIONAL:
1093                 break;
1094         case IEEE80211_AMPDU_RX_START:
1095         case IEEE80211_AMPDU_RX_STOP:
1096                 break;
1097         default:
1098                 return -EOPNOTSUPP;
1099         }
1100
1101         return 0;
1102 }
1103
1104 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1105 {
1106         /* Not implemented, queues only on kernel side */
1107 }
1108
1109 struct hw_scan_done {
1110         struct delayed_work w;
1111         struct ieee80211_hw *hw;
1112 };
1113
1114 static void hw_scan_done(struct work_struct *work)
1115 {
1116         struct hw_scan_done *hsd =
1117                 container_of(work, struct hw_scan_done, w.work);
1118
1119         ieee80211_scan_completed(hsd->hw, false);
1120         kfree(hsd);
1121 }
1122
1123 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1124                                   struct ieee80211_vif *vif,
1125                                   struct cfg80211_scan_request *req)
1126 {
1127         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1128         int i;
1129
1130         if (!hsd)
1131                 return -ENOMEM;
1132
1133         hsd->hw = hw;
1134         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1135
1136         printk(KERN_DEBUG "hwsim hw_scan request\n");
1137         for (i = 0; i < req->n_channels; i++)
1138                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1139                         req->channels[i]->center_freq);
1140         print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1141                         16, 1, req->ie, req->ie_len, 1);
1142
1143         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1144
1145         return 0;
1146 }
1147
1148 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1149 {
1150         struct mac80211_hwsim_data *hwsim = hw->priv;
1151
1152         mutex_lock(&hwsim->mutex);
1153
1154         if (hwsim->scanning) {
1155                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1156                 goto out;
1157         }
1158
1159         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1160         hwsim->scanning = true;
1161
1162 out:
1163         mutex_unlock(&hwsim->mutex);
1164 }
1165
1166 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1167 {
1168         struct mac80211_hwsim_data *hwsim = hw->priv;
1169
1170         mutex_lock(&hwsim->mutex);
1171
1172         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1173         hwsim->scanning = false;
1174
1175         mutex_unlock(&hwsim->mutex);
1176 }
1177
1178 static struct ieee80211_ops mac80211_hwsim_ops =
1179 {
1180         .tx = mac80211_hwsim_tx,
1181         .start = mac80211_hwsim_start,
1182         .stop = mac80211_hwsim_stop,
1183         .add_interface = mac80211_hwsim_add_interface,
1184         .change_interface = mac80211_hwsim_change_interface,
1185         .remove_interface = mac80211_hwsim_remove_interface,
1186         .config = mac80211_hwsim_config,
1187         .configure_filter = mac80211_hwsim_configure_filter,
1188         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1189         .sta_add = mac80211_hwsim_sta_add,
1190         .sta_remove = mac80211_hwsim_sta_remove,
1191         .sta_notify = mac80211_hwsim_sta_notify,
1192         .set_tim = mac80211_hwsim_set_tim,
1193         .conf_tx = mac80211_hwsim_conf_tx,
1194         .get_survey = mac80211_hwsim_get_survey,
1195         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1196         .ampdu_action = mac80211_hwsim_ampdu_action,
1197         .sw_scan_start = mac80211_hwsim_sw_scan,
1198         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1199         .flush = mac80211_hwsim_flush,
1200 };
1201
1202
1203 static void mac80211_hwsim_free(void)
1204 {
1205         struct list_head tmplist, *i, *tmp;
1206         struct mac80211_hwsim_data *data, *tmpdata;
1207
1208         INIT_LIST_HEAD(&tmplist);
1209
1210         spin_lock_bh(&hwsim_radio_lock);
1211         list_for_each_safe(i, tmp, &hwsim_radios)
1212                 list_move(i, &tmplist);
1213         spin_unlock_bh(&hwsim_radio_lock);
1214
1215         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1216                 debugfs_remove(data->debugfs_group);
1217                 debugfs_remove(data->debugfs_ps);
1218                 debugfs_remove(data->debugfs);
1219                 ieee80211_unregister_hw(data->hw);
1220                 device_unregister(data->dev);
1221                 ieee80211_free_hw(data->hw);
1222         }
1223         class_destroy(hwsim_class);
1224 }
1225
1226
1227 static struct device_driver mac80211_hwsim_driver = {
1228         .name = "mac80211_hwsim"
1229 };
1230
1231 static const struct net_device_ops hwsim_netdev_ops = {
1232         .ndo_start_xmit         = hwsim_mon_xmit,
1233         .ndo_change_mtu         = eth_change_mtu,
1234         .ndo_set_mac_address    = eth_mac_addr,
1235         .ndo_validate_addr      = eth_validate_addr,
1236 };
1237
1238 static void hwsim_mon_setup(struct net_device *dev)
1239 {
1240         dev->netdev_ops = &hwsim_netdev_ops;
1241         dev->destructor = free_netdev;
1242         ether_setup(dev);
1243         dev->tx_queue_len = 0;
1244         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1245         memset(dev->dev_addr, 0, ETH_ALEN);
1246         dev->dev_addr[0] = 0x12;
1247 }
1248
1249
1250 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1251 {
1252         struct mac80211_hwsim_data *data = dat;
1253         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1254         struct sk_buff *skb;
1255         struct ieee80211_pspoll *pspoll;
1256         int _pid;
1257
1258         if (!vp->assoc)
1259                 return;
1260
1261         wiphy_debug(data->hw->wiphy,
1262                     "%s: send PS-Poll to %pM for aid %d\n",
1263                     __func__, vp->bssid, vp->aid);
1264
1265         skb = dev_alloc_skb(sizeof(*pspoll));
1266         if (!skb)
1267                 return;
1268         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1269         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1270                                             IEEE80211_STYPE_PSPOLL |
1271                                             IEEE80211_FCTL_PM);
1272         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1273         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1274         memcpy(pspoll->ta, mac, ETH_ALEN);
1275
1276         /* wmediumd mode check */
1277         _pid = wmediumd_pid;
1278
1279         if (_pid)
1280                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1281
1282         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1283                 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1284         dev_kfree_skb(skb);
1285 }
1286
1287
1288 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1289                                 struct ieee80211_vif *vif, int ps)
1290 {
1291         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1292         struct sk_buff *skb;
1293         struct ieee80211_hdr *hdr;
1294         int _pid;
1295
1296         if (!vp->assoc)
1297                 return;
1298
1299         wiphy_debug(data->hw->wiphy,
1300                     "%s: send data::nullfunc to %pM ps=%d\n",
1301                     __func__, vp->bssid, ps);
1302
1303         skb = dev_alloc_skb(sizeof(*hdr));
1304         if (!skb)
1305                 return;
1306         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1307         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1308                                          IEEE80211_STYPE_NULLFUNC |
1309                                          (ps ? IEEE80211_FCTL_PM : 0));
1310         hdr->duration_id = cpu_to_le16(0);
1311         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1312         memcpy(hdr->addr2, mac, ETH_ALEN);
1313         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1314
1315         /* wmediumd mode check */
1316         _pid = wmediumd_pid;
1317
1318         if (_pid)
1319                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1320
1321         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1322                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1323         dev_kfree_skb(skb);
1324 }
1325
1326
1327 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1328                                    struct ieee80211_vif *vif)
1329 {
1330         struct mac80211_hwsim_data *data = dat;
1331         hwsim_send_nullfunc(data, mac, vif, 1);
1332 }
1333
1334
1335 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1336                                       struct ieee80211_vif *vif)
1337 {
1338         struct mac80211_hwsim_data *data = dat;
1339         hwsim_send_nullfunc(data, mac, vif, 0);
1340 }
1341
1342
1343 static int hwsim_fops_ps_read(void *dat, u64 *val)
1344 {
1345         struct mac80211_hwsim_data *data = dat;
1346         *val = data->ps;
1347         return 0;
1348 }
1349
1350 static int hwsim_fops_ps_write(void *dat, u64 val)
1351 {
1352         struct mac80211_hwsim_data *data = dat;
1353         enum ps_mode old_ps;
1354
1355         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1356             val != PS_MANUAL_POLL)
1357                 return -EINVAL;
1358
1359         old_ps = data->ps;
1360         data->ps = val;
1361
1362         if (val == PS_MANUAL_POLL) {
1363                 ieee80211_iterate_active_interfaces(data->hw,
1364                                                     hwsim_send_ps_poll, data);
1365                 data->ps_poll_pending = true;
1366         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1367                 ieee80211_iterate_active_interfaces(data->hw,
1368                                                     hwsim_send_nullfunc_ps,
1369                                                     data);
1370         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1371                 ieee80211_iterate_active_interfaces(data->hw,
1372                                                     hwsim_send_nullfunc_no_ps,
1373                                                     data);
1374         }
1375
1376         return 0;
1377 }
1378
1379 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1380                         "%llu\n");
1381
1382
1383 static int hwsim_fops_group_read(void *dat, u64 *val)
1384 {
1385         struct mac80211_hwsim_data *data = dat;
1386         *val = data->group;
1387         return 0;
1388 }
1389
1390 static int hwsim_fops_group_write(void *dat, u64 val)
1391 {
1392         struct mac80211_hwsim_data *data = dat;
1393         data->group = val;
1394         return 0;
1395 }
1396
1397 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1398                         hwsim_fops_group_read, hwsim_fops_group_write,
1399                         "%llx\n");
1400
1401 struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1402                              struct mac_address *addr)
1403 {
1404         struct mac80211_hwsim_data *data;
1405         bool _found = false;
1406
1407         spin_lock_bh(&hwsim_radio_lock);
1408         list_for_each_entry(data, &hwsim_radios, list) {
1409                 if (memcmp(data->addresses[1].addr, addr,
1410                           sizeof(struct mac_address)) == 0) {
1411                         _found = true;
1412                         break;
1413                 }
1414         }
1415         spin_unlock_bh(&hwsim_radio_lock);
1416
1417         if (!_found)
1418                 return NULL;
1419
1420         return data;
1421 }
1422
1423 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1424                                            struct genl_info *info)
1425 {
1426
1427         struct ieee80211_hdr *hdr;
1428         struct mac80211_hwsim_data *data2;
1429         struct ieee80211_tx_info *txi;
1430         struct hwsim_tx_rate *tx_attempts;
1431         struct sk_buff __user *ret_skb;
1432         struct sk_buff *skb, *tmp;
1433         struct mac_address *src;
1434         unsigned int hwsim_flags;
1435
1436         int i;
1437         bool found = false;
1438
1439         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1440            !info->attrs[HWSIM_ATTR_FLAGS] ||
1441            !info->attrs[HWSIM_ATTR_COOKIE] ||
1442            !info->attrs[HWSIM_ATTR_TX_INFO])
1443                 goto out;
1444
1445         src = (struct mac_address *)nla_data(
1446                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1447         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1448
1449         ret_skb = (struct sk_buff __user *)
1450                   (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1451
1452         data2 = get_hwsim_data_ref_from_addr(src);
1453
1454         if (data2 == NULL)
1455                 goto out;
1456
1457         /* look for the skb matching the cookie passed back from user */
1458         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1459                 if (skb == ret_skb) {
1460                         skb_unlink(skb, &data2->pending);
1461                         found = true;
1462                         break;
1463                 }
1464         }
1465
1466         /* not found */
1467         if (!found)
1468                 goto out;
1469
1470         /* Tx info received because the frame was broadcasted on user space,
1471          so we get all the necessary info: tx attempts and skb control buff */
1472
1473         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1474                        info->attrs[HWSIM_ATTR_TX_INFO]);
1475
1476         /* now send back TX status */
1477         txi = IEEE80211_SKB_CB(skb);
1478
1479         if (txi->control.vif)
1480                 hwsim_check_magic(txi->control.vif);
1481         if (txi->control.sta)
1482                 hwsim_check_sta_magic(txi->control.sta);
1483
1484         ieee80211_tx_info_clear_status(txi);
1485
1486         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1487                 txi->status.rates[i].idx = tx_attempts[i].idx;
1488                 txi->status.rates[i].count = tx_attempts[i].count;
1489                 /*txi->status.rates[i].flags = 0;*/
1490         }
1491
1492         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1493
1494         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1495            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1496                 if (skb->len >= 16) {
1497                         hdr = (struct ieee80211_hdr *) skb->data;
1498                         mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1499                 }
1500         }
1501         ieee80211_tx_status_irqsafe(data2->hw, skb);
1502         return 0;
1503 out:
1504         return -EINVAL;
1505
1506 }
1507
1508 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1509                                           struct genl_info *info)
1510 {
1511
1512         struct mac80211_hwsim_data  *data2;
1513         struct ieee80211_rx_status rx_status;
1514         struct mac_address *dst;
1515         int frame_data_len;
1516         char *frame_data;
1517         struct sk_buff *skb = NULL;
1518
1519         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1520            !info->attrs[HWSIM_ATTR_FRAME] ||
1521            !info->attrs[HWSIM_ATTR_RX_RATE] ||
1522            !info->attrs[HWSIM_ATTR_SIGNAL])
1523                 goto out;
1524
1525         dst = (struct mac_address *)nla_data(
1526                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1527
1528         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1529         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1530
1531         /* Allocate new skb here */
1532         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1533         if (skb == NULL)
1534                 goto err;
1535
1536         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1537                 /* Copy the data */
1538                 memcpy(skb_put(skb, frame_data_len), frame_data,
1539                        frame_data_len);
1540         } else
1541                 goto err;
1542
1543         data2 = get_hwsim_data_ref_from_addr(dst);
1544
1545         if (data2 == NULL)
1546                 goto out;
1547
1548         /* check if radio is configured properly */
1549
1550         if (data2->idle || !data2->started || !data2->channel)
1551                 goto out;
1552
1553         /*A frame is received from user space*/
1554         memset(&rx_status, 0, sizeof(rx_status));
1555         rx_status.freq = data2->channel->center_freq;
1556         rx_status.band = data2->channel->band;
1557         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1558         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1559
1560         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1561         ieee80211_rx_irqsafe(data2->hw, skb);
1562
1563         return 0;
1564 err:
1565         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1566         goto out;
1567 out:
1568         dev_kfree_skb(skb);
1569         return -EINVAL;
1570 }
1571
1572 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1573                                       struct genl_info *info)
1574 {
1575         if (info == NULL)
1576                 goto out;
1577
1578         wmediumd_pid = info->snd_pid;
1579
1580         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1581         "switching to wmediumd mode with pid %d\n", info->snd_pid);
1582
1583         return 0;
1584 out:
1585         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1586         return -EINVAL;
1587 }
1588
1589 /* Generic Netlink operations array */
1590 static struct genl_ops hwsim_ops[] = {
1591         {
1592                 .cmd = HWSIM_CMD_REGISTER,
1593                 .policy = hwsim_genl_policy,
1594                 .doit = hwsim_register_received_nl,
1595                 .flags = GENL_ADMIN_PERM,
1596         },
1597         {
1598                 .cmd = HWSIM_CMD_FRAME,
1599                 .policy = hwsim_genl_policy,
1600                 .doit = hwsim_cloned_frame_received_nl,
1601         },
1602         {
1603                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1604                 .policy = hwsim_genl_policy,
1605                 .doit = hwsim_tx_info_frame_received_nl,
1606         },
1607 };
1608
1609 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1610                                          unsigned long state,
1611                                          void *_notify)
1612 {
1613         struct netlink_notify *notify = _notify;
1614
1615         if (state != NETLINK_URELEASE)
1616                 return NOTIFY_DONE;
1617
1618         if (notify->pid == wmediumd_pid) {
1619                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1620                        " socket, switching to perfect channel medium\n");
1621                 wmediumd_pid = 0;
1622         }
1623         return NOTIFY_DONE;
1624
1625 }
1626
1627 static struct notifier_block hwsim_netlink_notifier = {
1628         .notifier_call = mac80211_hwsim_netlink_notify,
1629 };
1630
1631 static int hwsim_init_netlink(void)
1632 {
1633         int rc;
1634         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1635
1636         wmediumd_pid = 0;
1637
1638         rc = genl_register_family_with_ops(&hwsim_genl_family,
1639                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1640         if (rc)
1641                 goto failure;
1642
1643         rc = netlink_register_notifier(&hwsim_netlink_notifier);
1644         if (rc)
1645                 goto failure;
1646
1647         return 0;
1648
1649 failure:
1650         printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1651         return -EINVAL;
1652 }
1653
1654 static void hwsim_exit_netlink(void)
1655 {
1656         int ret;
1657
1658         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1659         /* unregister the notifier */
1660         netlink_unregister_notifier(&hwsim_netlink_notifier);
1661         /* unregister the family */
1662         ret = genl_unregister_family(&hwsim_genl_family);
1663         if (ret)
1664                 printk(KERN_DEBUG "mac80211_hwsim: "
1665                        "unregister family %i\n", ret);
1666 }
1667
1668 static int __init init_mac80211_hwsim(void)
1669 {
1670         int i, err = 0;
1671         u8 addr[ETH_ALEN];
1672         struct mac80211_hwsim_data *data;
1673         struct ieee80211_hw *hw;
1674         enum ieee80211_band band;
1675
1676         if (radios < 1 || radios > 100)
1677                 return -EINVAL;
1678
1679         if (fake_hw_scan) {
1680                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1681                 mac80211_hwsim_ops.sw_scan_start = NULL;
1682                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1683         }
1684
1685         spin_lock_init(&hwsim_radio_lock);
1686         INIT_LIST_HEAD(&hwsim_radios);
1687
1688         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1689         if (IS_ERR(hwsim_class))
1690                 return PTR_ERR(hwsim_class);
1691
1692         memset(addr, 0, ETH_ALEN);
1693         addr[0] = 0x02;
1694
1695         for (i = 0; i < radios; i++) {
1696                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1697                        i);
1698                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1699                 if (!hw) {
1700                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1701                                "failed\n");
1702                         err = -ENOMEM;
1703                         goto failed;
1704                 }
1705                 data = hw->priv;
1706                 data->hw = hw;
1707
1708                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1709                                           "hwsim%d", i);
1710                 if (IS_ERR(data->dev)) {
1711                         printk(KERN_DEBUG
1712                                "mac80211_hwsim: device_create "
1713                                "failed (%ld)\n", PTR_ERR(data->dev));
1714                         err = -ENOMEM;
1715                         goto failed_drvdata;
1716                 }
1717                 data->dev->driver = &mac80211_hwsim_driver;
1718                 skb_queue_head_init(&data->pending);
1719
1720                 SET_IEEE80211_DEV(hw, data->dev);
1721                 addr[3] = i >> 8;
1722                 addr[4] = i;
1723                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1724                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1725                 data->addresses[1].addr[0] |= 0x40;
1726                 hw->wiphy->n_addresses = 2;
1727                 hw->wiphy->addresses = data->addresses;
1728
1729                 if (fake_hw_scan) {
1730                         hw->wiphy->max_scan_ssids = 255;
1731                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1732                 }
1733
1734                 hw->channel_change_time = 1;
1735                 hw->queues = 4;
1736                 hw->wiphy->interface_modes =
1737                         BIT(NL80211_IFTYPE_STATION) |
1738                         BIT(NL80211_IFTYPE_AP) |
1739                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1740                         BIT(NL80211_IFTYPE_P2P_GO) |
1741                         BIT(NL80211_IFTYPE_ADHOC) |
1742                         BIT(NL80211_IFTYPE_MESH_POINT);
1743
1744                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1745                             IEEE80211_HW_SIGNAL_DBM |
1746                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1747                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1748                             IEEE80211_HW_AMPDU_AGGREGATION;
1749
1750                 /* ask mac80211 to reserve space for magic */
1751                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1752                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1753
1754                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1755                         sizeof(hwsim_channels_2ghz));
1756                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1757                         sizeof(hwsim_channels_5ghz));
1758                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1759
1760                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1761                         struct ieee80211_supported_band *sband = &data->bands[band];
1762                         switch (band) {
1763                         case IEEE80211_BAND_2GHZ:
1764                                 sband->channels = data->channels_2ghz;
1765                                 sband->n_channels =
1766                                         ARRAY_SIZE(hwsim_channels_2ghz);
1767                                 sband->bitrates = data->rates;
1768                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1769                                 break;
1770                         case IEEE80211_BAND_5GHZ:
1771                                 sband->channels = data->channels_5ghz;
1772                                 sband->n_channels =
1773                                         ARRAY_SIZE(hwsim_channels_5ghz);
1774                                 sband->bitrates = data->rates + 4;
1775                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1776                                 break;
1777                         default:
1778                                 break;
1779                         }
1780
1781                         sband->ht_cap.ht_supported = true;
1782                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1783                                 IEEE80211_HT_CAP_GRN_FLD |
1784                                 IEEE80211_HT_CAP_SGI_40 |
1785                                 IEEE80211_HT_CAP_DSSSCCK40;
1786                         sband->ht_cap.ampdu_factor = 0x3;
1787                         sband->ht_cap.ampdu_density = 0x6;
1788                         memset(&sband->ht_cap.mcs, 0,
1789                                sizeof(sband->ht_cap.mcs));
1790                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1791                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1792                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1793
1794                         hw->wiphy->bands[band] = sband;
1795                 }
1796                 /* By default all radios are belonging to the first group */
1797                 data->group = 1;
1798                 mutex_init(&data->mutex);
1799
1800                 /* Enable frame retransmissions for lossy channels */
1801                 hw->max_rates = 4;
1802                 hw->max_rate_tries = 11;
1803
1804                 /* Work to be done prior to ieee80211_register_hw() */
1805                 switch (regtest) {
1806                 case HWSIM_REGTEST_DISABLED:
1807                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1808                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1809                 case HWSIM_REGTEST_DIFF_COUNTRY:
1810                         /*
1811                          * Nothing to be done for driver regulatory domain
1812                          * hints prior to ieee80211_register_hw()
1813                          */
1814                         break;
1815                 case HWSIM_REGTEST_WORLD_ROAM:
1816                         if (i == 0) {
1817                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1818                                 wiphy_apply_custom_regulatory(hw->wiphy,
1819                                         &hwsim_world_regdom_custom_01);
1820                         }
1821                         break;
1822                 case HWSIM_REGTEST_CUSTOM_WORLD:
1823                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1824                         wiphy_apply_custom_regulatory(hw->wiphy,
1825                                 &hwsim_world_regdom_custom_01);
1826                         break;
1827                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1828                         if (i == 0) {
1829                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1830                                 wiphy_apply_custom_regulatory(hw->wiphy,
1831                                         &hwsim_world_regdom_custom_01);
1832                         } else if (i == 1) {
1833                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1834                                 wiphy_apply_custom_regulatory(hw->wiphy,
1835                                         &hwsim_world_regdom_custom_02);
1836                         }
1837                         break;
1838                 case HWSIM_REGTEST_STRICT_ALL:
1839                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1840                         break;
1841                 case HWSIM_REGTEST_STRICT_FOLLOW:
1842                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1843                         if (i == 0)
1844                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1845                         break;
1846                 case HWSIM_REGTEST_ALL:
1847                         if (i == 0) {
1848                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1849                                 wiphy_apply_custom_regulatory(hw->wiphy,
1850                                         &hwsim_world_regdom_custom_01);
1851                         } else if (i == 1) {
1852                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1853                                 wiphy_apply_custom_regulatory(hw->wiphy,
1854                                         &hwsim_world_regdom_custom_02);
1855                         } else if (i == 4)
1856                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1857                         break;
1858                 default:
1859                         break;
1860                 }
1861
1862                 /* give the regulatory workqueue a chance to run */
1863                 if (regtest)
1864                         schedule_timeout_interruptible(1);
1865                 err = ieee80211_register_hw(hw);
1866                 if (err < 0) {
1867                         printk(KERN_DEBUG "mac80211_hwsim: "
1868                                "ieee80211_register_hw failed (%d)\n", err);
1869                         goto failed_hw;
1870                 }
1871
1872                 /* Work to be done after to ieee80211_register_hw() */
1873                 switch (regtest) {
1874                 case HWSIM_REGTEST_WORLD_ROAM:
1875                 case HWSIM_REGTEST_DISABLED:
1876                         break;
1877                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1878                         if (!i)
1879                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1880                         break;
1881                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1882                 case HWSIM_REGTEST_STRICT_ALL:
1883                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1884                         break;
1885                 case HWSIM_REGTEST_DIFF_COUNTRY:
1886                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1887                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1888                         break;
1889                 case HWSIM_REGTEST_CUSTOM_WORLD:
1890                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1891                         /*
1892                          * Nothing to be done for custom world regulatory
1893                          * domains after to ieee80211_register_hw
1894                          */
1895                         break;
1896                 case HWSIM_REGTEST_STRICT_FOLLOW:
1897                         if (i == 0)
1898                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1899                         break;
1900                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1901                         if (i == 0)
1902                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1903                         else if (i == 1)
1904                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1905                         break;
1906                 case HWSIM_REGTEST_ALL:
1907                         if (i == 2)
1908                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1909                         else if (i == 3)
1910                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1911                         else if (i == 4)
1912                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1913                         break;
1914                 default:
1915                         break;
1916                 }
1917
1918                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1919                             hw->wiphy->perm_addr);
1920
1921                 data->debugfs = debugfs_create_dir("hwsim",
1922                                                    hw->wiphy->debugfsdir);
1923                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1924                                                        data->debugfs, data,
1925                                                        &hwsim_fops_ps);
1926                 data->debugfs_group = debugfs_create_file("group", 0666,
1927                                                         data->debugfs, data,
1928                                                         &hwsim_fops_group);
1929
1930                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1931                             (unsigned long) hw);
1932
1933                 list_add_tail(&data->list, &hwsim_radios);
1934         }
1935
1936         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1937         if (hwsim_mon == NULL)
1938                 goto failed;
1939
1940         rtnl_lock();
1941
1942         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1943         if (err < 0)
1944                 goto failed_mon;
1945
1946
1947         err = register_netdevice(hwsim_mon);
1948         if (err < 0)
1949                 goto failed_mon;
1950
1951         rtnl_unlock();
1952
1953         err = hwsim_init_netlink();
1954         if (err < 0)
1955                 goto failed_nl;
1956
1957         return 0;
1958
1959 failed_nl:
1960         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
1961         return err;
1962
1963 failed_mon:
1964         rtnl_unlock();
1965         free_netdev(hwsim_mon);
1966         mac80211_hwsim_free();
1967         return err;
1968
1969 failed_hw:
1970         device_unregister(data->dev);
1971 failed_drvdata:
1972         ieee80211_free_hw(hw);
1973 failed:
1974         mac80211_hwsim_free();
1975         return err;
1976 }
1977
1978
1979 static void __exit exit_mac80211_hwsim(void)
1980 {
1981         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1982
1983         hwsim_exit_netlink();
1984
1985         mac80211_hwsim_free();
1986         unregister_netdev(hwsim_mon);
1987 }
1988
1989
1990 module_init(init_mac80211_hwsim);
1991 module_exit(exit_mac80211_hwsim);