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 <linux/module.h>
  30 #include <linux/ktime.h>
  31 #include <net/genetlink.h>
  32 #include "mac80211_hwsim.h"
  33
  34 #define WARN_QUEUE 100
  35 #define MAX_QUEUE 200
  36
  37 MODULE_AUTHOR("Jouni Malinen");
  38 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  39 MODULE_LICENSE("GPL");
  40
  41 static u32 wmediumd_pid;
  42
  43 static int radios = 2;
  44 module_param(radios, int, 0444);
  45 MODULE_PARM_DESC(radios, "Number of simulated radios");
  46
  47 static bool fake_hw_scan;
  48 module_param(fake_hw_scan, bool, 0444);
  49 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
  50
  51 /**
  52  * enum hwsim_regtest - the type of regulatory tests we offer
  53  *
  54  * These are the different values you can use for the regtest
  55  * module parameter. This is useful to help test world roaming
  56  * and the driver regulatory_hint() call and combinations of these.
  57  * If you want to do specific alpha2 regulatory domain tests simply
  58  * use the userspace regulatory request as that will be respected as
  59  * well without the need of this module parameter. This is designed
  60  * only for testing the driver regulatory request, world roaming
  61  * and all possible combinations.
  62  *
  63  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  64  *      this is the default value.
  65  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  66  *      hint, only one driver regulatory hint will be sent as such the
  67  *      secondary radios are expected to follow.
  68  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  69  *      request with all radios reporting the same regulatory domain.
  70  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  71  *      different regulatory domains requests. Expected behaviour is for
  72  *      an intersection to occur but each device will still use their
  73  *      respective regulatory requested domains. Subsequent radios will
  74  *      use the resulting intersection.
  75  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  76  *      this by using a custom beacon-capable regulatory domain for the first
  77  *      radio. All other device world roam.
  78  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  79  *      domain requests. All radios will adhere to this custom world regulatory
  80  *      domain.
  81  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  82  *      domain requests. The first radio will adhere to the first custom world
  83  *      regulatory domain, the second one to the second custom world regulatory
  84  *      domain. All other devices will world roam.
  85  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  86  *      settings, only the first radio will send a regulatory domain request
  87  *      and use strict settings. The rest of the radios are expected to follow.
  88  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  89  *      settings. All radios will adhere to this.
  90  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  91  *      domain settings, combined with secondary driver regulatory domain
  92  *      settings. The first radio will get a strict regulatory domain setting
  93  *      using the first driver regulatory request and the second radio will use
  94  *      non-strict settings using the second driver regulatory request. All
  95  *      other devices should follow the intersection created between the
  96  *      first two.
  97  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  98  *      at least 6 radios for a complete test. We will test in this order:
  99  *      1 - driver custom world regulatory domain
 100  *      2 - second custom world regulatory domain
 101  *      3 - first driver regulatory domain request
 102  *      4 - second driver regulatory domain request
 103  *      5 - strict regulatory domain settings using the third driver regulatory
 104  *          domain request
 105  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 106  *                 regulatory requests.
 107  */
 108 enum hwsim_regtest {
 109         HWSIM_REGTEST_DISABLED = 0,
 110         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 111         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 112         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 113         HWSIM_REGTEST_WORLD_ROAM = 4,
 114         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 115         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 116         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 117         HWSIM_REGTEST_STRICT_ALL = 8,
 118         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 119         HWSIM_REGTEST_ALL = 10,
 120 };
 121
 122 /* Set to one of the HWSIM_REGTEST_* values above */
 123 static int regtest = HWSIM_REGTEST_DISABLED;
 124 module_param(regtest, int, 0444);
 125 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 126
 127 static const char *hwsim_alpha2s[] = {
 128         "FI",
 129         "AL",
 130         "US",
 131         "DE",
 132         "JP",
 133         "AL",
 134 };
 135
 136 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 137         .n_reg_rules = 4,
 138         .alpha2 =  "99",
 139         .reg_rules = {
 140                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 141                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 142                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 143                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 144         }
 145 };
 146
 147 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 148         .n_reg_rules = 2,
 149         .alpha2 =  "99",
 150         .reg_rules = {
 151                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 152                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 153                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 154         }
 155 };
 156
 157 struct hwsim_vif_priv {
 158         u32 magic;
 159         u8 bssid[ETH_ALEN];
 160         bool assoc;
 161         u16 aid;
 162 };
 163
 164 #define HWSIM_VIF_MAGIC 0x69537748
 165
 166 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 167 {
 168         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 169         WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 170 }
 171
 172 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 173 {
 174         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 175         vp->magic = HWSIM_VIF_MAGIC;
 176 }
 177
 178 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 179 {
 180         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 181         vp->magic = 0;
 182 }
 183
 184 struct hwsim_sta_priv {
 185         u32 magic;
 186 };
 187
 188 #define HWSIM_STA_MAGIC 0x6d537748
 189
 190 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 191 {
 192         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 193         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 194 }
 195
 196 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 197 {
 198         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 199         sp->magic = HWSIM_STA_MAGIC;
 200 }
 201
 202 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 203 {
 204         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 205         sp->magic = 0;
 206 }
 207
 208 static struct class *hwsim_class;
 209
 210 static struct net_device *hwsim_mon; /* global monitor netdev */
 211
 212 #define CHAN2G(_freq)  { \
 213         .band = IEEE80211_BAND_2GHZ, \
 214         .center_freq = (_freq), \
 215         .hw_value = (_freq), \
 216         .max_power = 20, \
 217 }
 218
 219 #define CHAN5G(_freq) { \
 220         .band = IEEE80211_BAND_5GHZ, \
 221         .center_freq = (_freq), \
 222         .hw_value = (_freq), \
 223         .max_power = 20, \
 224 }
 225
 226 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 227         CHAN2G(2412), /* Channel 1 */
 228         CHAN2G(2417), /* Channel 2 */
 229         CHAN2G(2422), /* Channel 3 */
 230         CHAN2G(2427), /* Channel 4 */
 231         CHAN2G(2432), /* Channel 5 */
 232         CHAN2G(2437), /* Channel 6 */
 233         CHAN2G(2442), /* Channel 7 */
 234         CHAN2G(2447), /* Channel 8 */
 235         CHAN2G(2452), /* Channel 9 */
 236         CHAN2G(2457), /* Channel 10 */
 237         CHAN2G(2462), /* Channel 11 */
 238         CHAN2G(2467), /* Channel 12 */
 239         CHAN2G(2472), /* Channel 13 */
 240         CHAN2G(2484), /* Channel 14 */
 241 };
 242
 243 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 244         CHAN5G(5180), /* Channel 36 */
 245         CHAN5G(5200), /* Channel 40 */
 246         CHAN5G(5220), /* Channel 44 */
 247         CHAN5G(5240), /* Channel 48 */
 248
 249         CHAN5G(5260), /* Channel 52 */
 250         CHAN5G(5280), /* Channel 56 */
 251         CHAN5G(5300), /* Channel 60 */
 252         CHAN5G(5320), /* Channel 64 */
 253
 254         CHAN5G(5500), /* Channel 100 */
 255         CHAN5G(5520), /* Channel 104 */
 256         CHAN5G(5540), /* Channel 108 */
 257         CHAN5G(5560), /* Channel 112 */
 258         CHAN5G(5580), /* Channel 116 */
 259         CHAN5G(5600), /* Channel 120 */
 260         CHAN5G(5620), /* Channel 124 */
 261         CHAN5G(5640), /* Channel 128 */
 262         CHAN5G(5660), /* Channel 132 */
 263         CHAN5G(5680), /* Channel 136 */
 264         CHAN5G(5700), /* Channel 140 */
 265
 266         CHAN5G(5745), /* Channel 149 */
 267         CHAN5G(5765), /* Channel 153 */
 268         CHAN5G(5785), /* Channel 157 */
 269         CHAN5G(5805), /* Channel 161 */
 270         CHAN5G(5825), /* Channel 165 */
 271 };
 272
 273 static const struct ieee80211_rate hwsim_rates[] = {
 274         { .bitrate = 10 },
 275         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 276         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 277         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 278         { .bitrate = 60 },
 279         { .bitrate = 90 },
 280         { .bitrate = 120 },
 281         { .bitrate = 180 },
 282         { .bitrate = 240 },
 283         { .bitrate = 360 },
 284         { .bitrate = 480 },
 285         { .bitrate = 540 }
 286 };
 287
 288 static spinlock_t hwsim_radio_lock;
 289 static struct list_head hwsim_radios;
 290
 291 struct mac80211_hwsim_data {
 292         struct list_head list;
 293         struct ieee80211_hw *hw;
 294         struct device *dev;
 295         struct ieee80211_supported_band bands[2];
 296         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 297         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 298         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 299
 300         struct mac_address addresses[2];
 301
 302         struct ieee80211_channel *channel;
 303         unsigned long beacon_int; /* in jiffies unit */
 304         unsigned int rx_filter;
 305         bool started, idle, scanning;
 306         struct mutex mutex;
 307         struct timer_list beacon_timer;
 308         enum ps_mode {
 309                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 310         } ps;
 311         bool ps_poll_pending;
 312         struct dentry *debugfs;
 313         struct dentry *debugfs_ps;
 314
 315         struct sk_buff_head pending;    /* packets pending */
 316         /*
 317          * Only radios in the same group can communicate together (the
 318          * channel has to match too). Each bit represents a group. A
 319          * radio can be in more then one group.
 320          */
 321         u64 group;
 322         struct dentry *debugfs_group;
 323
 324         int power_level;
 325
 326         /* difference between this hw's clock and the real clock, in usecs */
 327         u64 tsf_offset;
 328 };
 329
 330
 331 struct hwsim_radiotap_hdr {
 332         struct ieee80211_radiotap_header hdr;
 333         __le64 rt_tsft;
 334         u8 rt_flags;
 335         u8 rt_rate;
 336         __le16 rt_channel;
 337         __le16 rt_chbitmask;
 338 } __packed;
 339
 340 /* MAC80211_HWSIM netlinf family */
 341 static struct genl_family hwsim_genl_family = {
 342         .id = GENL_ID_GENERATE,
 343         .hdrsize = 0,
 344         .name = "MAC80211_HWSIM",
 345         .version = 1,
 346         .maxattr = HWSIM_ATTR_MAX,
 347 };
 348
 349 /* MAC80211_HWSIM netlink policy */
 350
 351 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 352         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 353                                        .len = 6*sizeof(u8) },
 354         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 355                                           .len = 6*sizeof(u8) },
 356         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 357                                .len = IEEE80211_MAX_DATA_LEN },
 358         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 359         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 360         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 361         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 362                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 363                                         struct hwsim_tx_rate)},
 364         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 365 };
 366
 367 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 368                                         struct net_device *dev)
 369 {
 370         /* TODO: allow packet injection */
 371         dev_kfree_skb(skb);
 372         return NETDEV_TX_OK;
 373 }
 374
 375 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 376 {
 377         struct timeval tv = ktime_to_timeval(ktime_get_real());
 378         u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
 379         return cpu_to_le64(now + data->tsf_offset);
 380 }
 381
 382 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 383                 struct ieee80211_vif *vif)
 384 {
 385         struct mac80211_hwsim_data *data = hw->priv;
 386         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 387 }
 388
 389 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 390                 struct ieee80211_vif *vif, u64 tsf)
 391 {
 392         struct mac80211_hwsim_data *data = hw->priv;
 393         struct timeval tv = ktime_to_timeval(ktime_get_real());
 394         u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
 395         data->tsf_offset = tsf - now;
 396 }
 397
 398 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 399                                       struct sk_buff *tx_skb)
 400 {
 401         struct mac80211_hwsim_data *data = hw->priv;
 402         struct sk_buff *skb;
 403         struct hwsim_radiotap_hdr *hdr;
 404         u16 flags;
 405         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 406         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 407
 408         if (!netif_running(hwsim_mon))
 409                 return;
 410
 411         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 412         if (skb == NULL)
 413                 return;
 414
 415         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 416         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 417         hdr->hdr.it_pad = 0;
 418         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 419         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 420                                           (1 << IEEE80211_RADIOTAP_RATE) |
 421                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 422                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 423         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 424         hdr->rt_flags = 0;
 425         hdr->rt_rate = txrate->bitrate / 5;
 426         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 427         flags = IEEE80211_CHAN_2GHZ;
 428         if (txrate->flags & IEEE80211_RATE_ERP_G)
 429                 flags |= IEEE80211_CHAN_OFDM;
 430         else
 431                 flags |= IEEE80211_CHAN_CCK;
 432         hdr->rt_chbitmask = cpu_to_le16(flags);
 433
 434         skb->dev = hwsim_mon;
 435         skb_set_mac_header(skb, 0);
 436         skb->ip_summed = CHECKSUM_UNNECESSARY;
 437         skb->pkt_type = PACKET_OTHERHOST;
 438         skb->protocol = htons(ETH_P_802_2);
 439         memset(skb->cb, 0, sizeof(skb->cb));
 440         netif_rx(skb);
 441 }
 442
 443
 444 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 445 {
 446         struct mac80211_hwsim_data *data = hw->priv;
 447         struct sk_buff *skb;
 448         struct hwsim_radiotap_hdr *hdr;
 449         u16 flags;
 450         struct ieee80211_hdr *hdr11;
 451
 452         if (!netif_running(hwsim_mon))
 453                 return;
 454
 455         skb = dev_alloc_skb(100);
 456         if (skb == NULL)
 457                 return;
 458
 459         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 460         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 461         hdr->hdr.it_pad = 0;
 462         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 463         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 464                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 465         hdr->rt_flags = 0;
 466         hdr->rt_rate = 0;
 467         hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 468         flags = IEEE80211_CHAN_2GHZ;
 469         hdr->rt_chbitmask = cpu_to_le16(flags);
 470
 471         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 472         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 473                                            IEEE80211_STYPE_ACK);
 474         hdr11->duration_id = cpu_to_le16(0);
 475         memcpy(hdr11->addr1, addr, ETH_ALEN);
 476
 477         skb->dev = hwsim_mon;
 478         skb_set_mac_header(skb, 0);
 479         skb->ip_summed = CHECKSUM_UNNECESSARY;
 480         skb->pkt_type = PACKET_OTHERHOST;
 481         skb->protocol = htons(ETH_P_802_2);
 482         memset(skb->cb, 0, sizeof(skb->cb));
 483         netif_rx(skb);
 484 }
 485
 486
 487 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 488                            struct sk_buff *skb)
 489 {
 490         switch (data->ps) {
 491         case PS_DISABLED:
 492                 return true;
 493         case PS_ENABLED:
 494                 return false;
 495         case PS_AUTO_POLL:
 496                 /* TODO: accept (some) Beacons by default and other frames only
 497                  * if pending PS-Poll has been sent */
 498                 return true;
 499         case PS_MANUAL_POLL:
 500                 /* Allow unicast frames to own address if there is a pending
 501                  * PS-Poll */
 502                 if (data->ps_poll_pending &&
 503                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 504                            ETH_ALEN) == 0) {
 505                         data->ps_poll_pending = false;
 506                         return true;
 507                 }
 508                 return false;
 509         }
 510
 511         return true;
 512 }
 513
 514
 515 struct mac80211_hwsim_addr_match_data {
 516         bool ret;
 517         const u8 *addr;
 518 };
 519
 520 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 521                                      struct ieee80211_vif *vif)
 522 {
 523         struct mac80211_hwsim_addr_match_data *md = data;
 524         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 525                 md->ret = true;
 526 }
 527
 528
 529 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 530                                       const u8 *addr)
 531 {
 532         struct mac80211_hwsim_addr_match_data md;
 533
 534         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 535                 return true;
 536
 537         md.ret = false;
 538         md.addr = addr;
 539         ieee80211_iterate_active_interfaces_atomic(data->hw,
 540                                                    mac80211_hwsim_addr_iter,
 541                                                    &md);
 542
 543         return md.ret;
 544 }
 545
 546 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 547                                        struct sk_buff *my_skb,
 548                                        int dst_pid)
 549 {
 550         struct sk_buff *skb;
 551         struct mac80211_hwsim_data *data = hw->priv;
 552         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 553         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 554         void *msg_head;
 555         unsigned int hwsim_flags = 0;
 556         int i;
 557         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 558
 559         if (data->idle) {
 560                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 561                 dev_kfree_skb(my_skb);
 562                 return;
 563         }
 564
 565         if (data->ps != PS_DISABLED)
 566                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 567         /* If the queue contains MAX_QUEUE skb's drop some */
 568         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 569                 /* Droping until WARN_QUEUE level */
 570                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 571                         skb_dequeue(&data->pending);
 572         }
 573
 574         skb = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
 575         if (skb == NULL)
 576                 goto nla_put_failure;
 577
 578         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 579                                HWSIM_CMD_FRAME);
 580         if (msg_head == NULL) {
 581                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 582                 goto nla_put_failure;
 583         }
 584
 585         NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 586                      sizeof(struct mac_address), data->addresses[1].addr);
 587
 588         /* We get the skb->data */
 589         NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
 590
 591         /* We get the flags for this transmission, and we translate them to
 592            wmediumd flags  */
 593
 594         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 595                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 596
 597         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 598                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 599
 600         NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
 601
 602         /* We get the tx control (rate and retries) info*/
 603
 604         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 605                 tx_attempts[i].idx = info->status.rates[i].idx;
 606                 tx_attempts[i].count = info->status.rates[i].count;
 607         }
 608
 609         NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
 610                      sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 611                      tx_attempts);
 612
 613         /* We create a cookie to identify this skb */
 614         NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
 615
 616         genlmsg_end(skb, msg_head);
 617         genlmsg_unicast(&init_net, skb, dst_pid);
 618
 619         /* Enqueue the packet */
 620         skb_queue_tail(&data->pending, my_skb);
 621         return;
 622
 623 nla_put_failure:
 624         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 625 }
 626
 627 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 628                                           struct sk_buff *skb)
 629 {
 630         struct mac80211_hwsim_data *data = hw->priv, *data2;
 631         bool ack = false;
 632         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 633         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 634         struct ieee80211_rx_status rx_status;
 635         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 636
 637         if (data->idle) {
 638                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 639                 return false;
 640         }
 641
 642         memset(&rx_status, 0, sizeof(rx_status));
 643         rx_status.flag |= RX_FLAG_MACTIME_MPDU;
 644         rx_status.freq = data->channel->center_freq;
 645         rx_status.band = data->channel->band;
 646         rx_status.rate_idx = info->control.rates[0].idx;
 647         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 648                 rx_status.flag |= RX_FLAG_HT;
 649         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 650                 rx_status.flag |= RX_FLAG_40MHZ;
 651         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 652                 rx_status.flag |= RX_FLAG_SHORT_GI;
 653         /* TODO: simulate real signal strength (and optional packet loss) */
 654         rx_status.signal = data->power_level - 50;
 655
 656         if (data->ps != PS_DISABLED)
 657                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 658
 659         /* release the skb's source info */
 660         skb_orphan(skb);
 661         skb_dst_drop(skb);
 662         skb->mark = 0;
 663         secpath_reset(skb);
 664         nf_reset(skb);
 665
 666         /* Copy skb to all enabled radios that are on the current frequency */
 667         spin_lock(&hwsim_radio_lock);
 668         list_for_each_entry(data2, &hwsim_radios, list) {
 669                 struct sk_buff *nskb;
 670                 struct ieee80211_mgmt *mgmt;
 671
 672                 if (data == data2)
 673                         continue;
 674
 675                 if (data2->idle || !data2->started ||
 676                     !hwsim_ps_rx_ok(data2, skb) ||
 677                     !data->channel || !data2->channel ||
 678                     data->channel->center_freq != data2->channel->center_freq ||
 679                     !(data->group & data2->group))
 680                         continue;
 681
 682                 nskb = skb_copy(skb, GFP_ATOMIC);
 683                 if (nskb == NULL)
 684                         continue;
 685
 686                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 687                         ack = true;
 688
 689                 /* set bcn timestamp relative to receiver mactime */
 690                 rx_status.mactime =
 691                                 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
 692                 mgmt = (struct ieee80211_mgmt *) nskb->data;
 693                 if (ieee80211_is_beacon(mgmt->frame_control) ||
 694                     ieee80211_is_probe_resp(mgmt->frame_control))
 695                         mgmt->u.beacon.timestamp = cpu_to_le64(
 696                                 rx_status.mactime +
 697                                 (data->tsf_offset - data2->tsf_offset) +
 698                                 24 * 8 * 10 / txrate->bitrate);
 699
 700                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 701                 ieee80211_rx_irqsafe(data2->hw, nskb);
 702         }
 703         spin_unlock(&hwsim_radio_lock);
 704
 705         return ack;
 706 }
 707
 708 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 709 {
 710         bool ack;
 711         struct ieee80211_tx_info *txi;
 712         u32 _pid;
 713
 714         mac80211_hwsim_monitor_rx(hw, skb);
 715
 716         if (skb->len < 10) {
 717                 /* Should not happen; just a sanity check for addr1 use */
 718                 dev_kfree_skb(skb);
 719                 return;
 720         }
 721
 722         /* wmediumd mode check */
 723         _pid = ACCESS_ONCE(wmediumd_pid);
 724
 725         if (_pid)
 726                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 727
 728         /* NO wmediumd detected, perfect medium simulation */
 729         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
 730
 731         if (ack && skb->len >= 16) {
 732                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 733                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 734         }
 735
 736         txi = IEEE80211_SKB_CB(skb);
 737
 738         if (txi->control.vif)
 739                 hwsim_check_magic(txi->control.vif);
 740         if (txi->control.sta)
 741                 hwsim_check_sta_magic(txi->control.sta);
 742
 743         ieee80211_tx_info_clear_status(txi);
 744         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 745                 txi->flags |= IEEE80211_TX_STAT_ACK;
 746         ieee80211_tx_status_irqsafe(hw, skb);
 747 }
 748
 749
 750 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 751 {
 752         struct mac80211_hwsim_data *data = hw->priv;
 753         wiphy_debug(hw->wiphy, "%s\n", __func__);
 754         data->started = true;
 755         return 0;
 756 }
 757
 758
 759 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 760 {
 761         struct mac80211_hwsim_data *data = hw->priv;
 762         data->started = false;
 763         del_timer(&data->beacon_timer);
 764         wiphy_debug(hw->wiphy, "%s\n", __func__);
 765 }
 766
 767
 768 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 769                                         struct ieee80211_vif *vif)
 770 {
 771         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 772                     __func__, ieee80211_vif_type_p2p(vif),
 773                     vif->addr);
 774         hwsim_set_magic(vif);
 775         return 0;
 776 }
 777
 778
 779 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 780                                            struct ieee80211_vif *vif,
 781                                            enum nl80211_iftype newtype,
 782                                            bool newp2p)
 783 {
 784         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 785         wiphy_debug(hw->wiphy,
 786                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 787                     __func__, ieee80211_vif_type_p2p(vif),
 788                     newtype, vif->addr);
 789         hwsim_check_magic(vif);
 790
 791         return 0;
 792 }
 793
 794 static void mac80211_hwsim_remove_interface(
 795         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 796 {
 797         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 798                     __func__, ieee80211_vif_type_p2p(vif),
 799                     vif->addr);
 800         hwsim_check_magic(vif);
 801         hwsim_clear_magic(vif);
 802 }
 803
 804
 805 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 806                                      struct ieee80211_vif *vif)
 807 {
 808         struct ieee80211_hw *hw = arg;
 809         struct sk_buff *skb;
 810         struct ieee80211_tx_info *info;
 811         u32 _pid;
 812
 813         hwsim_check_magic(vif);
 814
 815         if (vif->type != NL80211_IFTYPE_AP &&
 816             vif->type != NL80211_IFTYPE_MESH_POINT &&
 817             vif->type != NL80211_IFTYPE_ADHOC)
 818                 return;
 819
 820         skb = ieee80211_beacon_get(hw, vif);
 821         if (skb == NULL)
 822                 return;
 823         info = IEEE80211_SKB_CB(skb);
 824
 825         mac80211_hwsim_monitor_rx(hw, skb);
 826
 827         /* wmediumd mode check */
 828         _pid = ACCESS_ONCE(wmediumd_pid);
 829
 830         if (_pid)
 831                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 832
 833         mac80211_hwsim_tx_frame_no_nl(hw, skb);
 834         dev_kfree_skb(skb);
 835 }
 836
 837
 838 static void mac80211_hwsim_beacon(unsigned long arg)
 839 {
 840         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 841         struct mac80211_hwsim_data *data = hw->priv;
 842
 843         if (!data->started)
 844                 return;
 845
 846         ieee80211_iterate_active_interfaces_atomic(
 847                 hw, mac80211_hwsim_beacon_tx, hw);
 848
 849         data->beacon_timer.expires = jiffies + data->beacon_int;
 850         add_timer(&data->beacon_timer);
 851 }
 852
 853 static const char *hwsim_chantypes[] = {
 854         [NL80211_CHAN_NO_HT] = "noht",
 855         [NL80211_CHAN_HT20] = "ht20",
 856         [NL80211_CHAN_HT40MINUS] = "ht40-",
 857         [NL80211_CHAN_HT40PLUS] = "ht40+",
 858 };
 859
 860 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 861 {
 862         struct mac80211_hwsim_data *data = hw->priv;
 863         struct ieee80211_conf *conf = &hw->conf;
 864         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 865                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 866                 [IEEE80211_SMPS_OFF] = "off",
 867                 [IEEE80211_SMPS_STATIC] = "static",
 868                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 869         };
 870
 871         wiphy_debug(hw->wiphy,
 872                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 873                     __func__,
 874                     conf->channel->center_freq,
 875                     hwsim_chantypes[conf->channel_type],
 876                     !!(conf->flags & IEEE80211_CONF_IDLE),
 877                     !!(conf->flags & IEEE80211_CONF_PS),
 878                     smps_modes[conf->smps_mode]);
 879
 880         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 881
 882         data->channel = conf->channel;
 883         data->power_level = conf->power_level;
 884         if (!data->started || !data->beacon_int)
 885                 del_timer(&data->beacon_timer);
 886         else
 887                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 888
 889         return 0;
 890 }
 891
 892
 893 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 894                                             unsigned int changed_flags,
 895                                             unsigned int *total_flags,u64 multicast)
 896 {
 897         struct mac80211_hwsim_data *data = hw->priv;
 898
 899         wiphy_debug(hw->wiphy, "%s\n", __func__);
 900
 901         data->rx_filter = 0;
 902         if (*total_flags & FIF_PROMISC_IN_BSS)
 903                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 904         if (*total_flags & FIF_ALLMULTI)
 905                 data->rx_filter |= FIF_ALLMULTI;
 906
 907         *total_flags = data->rx_filter;
 908 }
 909
 910 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 911                                             struct ieee80211_vif *vif,
 912                                             struct ieee80211_bss_conf *info,
 913                                             u32 changed)
 914 {
 915         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 916         struct mac80211_hwsim_data *data = hw->priv;
 917
 918         hwsim_check_magic(vif);
 919
 920         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
 921
 922         if (changed & BSS_CHANGED_BSSID) {
 923                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
 924                             __func__, info->bssid);
 925                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 926         }
 927
 928         if (changed & BSS_CHANGED_ASSOC) {
 929                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
 930                             info->assoc, info->aid);
 931                 vp->assoc = info->assoc;
 932                 vp->aid = info->aid;
 933         }
 934
 935         if (changed & BSS_CHANGED_BEACON_INT) {
 936                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
 937                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 938                 if (WARN_ON(!data->beacon_int))
 939                         data->beacon_int = 1;
 940                 if (data->started)
 941                         mod_timer(&data->beacon_timer,
 942                                   jiffies + data->beacon_int);
 943         }
 944
 945         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 946                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
 947                             info->use_cts_prot);
 948         }
 949
 950         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 951                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
 952                             info->use_short_preamble);
 953         }
 954
 955         if (changed & BSS_CHANGED_ERP_SLOT) {
 956                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
 957         }
 958
 959         if (changed & BSS_CHANGED_HT) {
 960                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
 961                             info->ht_operation_mode,
 962                             hwsim_chantypes[info->channel_type]);
 963         }
 964
 965         if (changed & BSS_CHANGED_BASIC_RATES) {
 966                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
 967                             (unsigned long long) info->basic_rates);
 968         }
 969 }
 970
 971 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 972                                   struct ieee80211_vif *vif,
 973                                   struct ieee80211_sta *sta)
 974 {
 975         hwsim_check_magic(vif);
 976         hwsim_set_sta_magic(sta);
 977
 978         return 0;
 979 }
 980
 981 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 982                                      struct ieee80211_vif *vif,
 983                                      struct ieee80211_sta *sta)
 984 {
 985         hwsim_check_magic(vif);
 986         hwsim_clear_sta_magic(sta);
 987
 988         return 0;
 989 }
 990
 991 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 992                                       struct ieee80211_vif *vif,
 993                                       enum sta_notify_cmd cmd,
 994                                       struct ieee80211_sta *sta)
 995 {
 996         hwsim_check_magic(vif);
 997
 998         switch (cmd) {
 999         case STA_NOTIFY_SLEEP:
1000         case STA_NOTIFY_AWAKE:
1001                 /* TODO: make good use of these flags */
1002                 break;
1003         default:
1004                 WARN(1, "Invalid sta notify: %d\n", cmd);
1005                 break;
1006         }
1007 }
1008
1009 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1010                                   struct ieee80211_sta *sta,
1011                                   bool set)
1012 {
1013         hwsim_check_sta_magic(sta);
1014         return 0;
1015 }
1016
1017 static int mac80211_hwsim_conf_tx(
1018         struct ieee80211_hw *hw,
1019         struct ieee80211_vif *vif, u16 queue,
1020         const struct ieee80211_tx_queue_params *params)
1021 {
1022         wiphy_debug(hw->wiphy,
1023                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1024                     __func__, queue,
1025                     params->txop, params->cw_min,
1026                     params->cw_max, params->aifs);
1027         return 0;
1028 }
1029
1030 static int mac80211_hwsim_get_survey(
1031         struct ieee80211_hw *hw, int idx,
1032         struct survey_info *survey)
1033 {
1034         struct ieee80211_conf *conf = &hw->conf;
1035
1036         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1037
1038         if (idx != 0)
1039                 return -ENOENT;
1040
1041         /* Current channel */
1042         survey->channel = conf->channel;
1043
1044         /*
1045          * Magically conjured noise level --- this is only ok for simulated hardware.
1046          *
1047          * A real driver which cannot determine the real channel noise MUST NOT
1048          * report any noise, especially not a magically conjured one :-)
1049          */
1050         survey->filled = SURVEY_INFO_NOISE_DBM;
1051         survey->noise = -92;
1052
1053         return 0;
1054 }
1055
1056 #ifdef CONFIG_NL80211_TESTMODE
1057 /*
1058  * This section contains example code for using netlink
1059  * attributes with the testmode command in nl80211.
1060  */
1061
1062 /* These enums need to be kept in sync with userspace */
1063 enum hwsim_testmode_attr {
1064         __HWSIM_TM_ATTR_INVALID = 0,
1065         HWSIM_TM_ATTR_CMD       = 1,
1066         HWSIM_TM_ATTR_PS        = 2,
1067
1068         /* keep last */
1069         __HWSIM_TM_ATTR_AFTER_LAST,
1070         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1071 };
1072
1073 enum hwsim_testmode_cmd {
1074         HWSIM_TM_CMD_SET_PS             = 0,
1075         HWSIM_TM_CMD_GET_PS             = 1,
1076 };
1077
1078 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1079         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1080         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1081 };
1082
1083 static int hwsim_fops_ps_write(void *dat, u64 val);
1084
1085 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1086                                        void *data, int len)
1087 {
1088         struct mac80211_hwsim_data *hwsim = hw->priv;
1089         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1090         struct sk_buff *skb;
1091         int err, ps;
1092
1093         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1094                         hwsim_testmode_policy);
1095         if (err)
1096                 return err;
1097
1098         if (!tb[HWSIM_TM_ATTR_CMD])
1099                 return -EINVAL;
1100
1101         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1102         case HWSIM_TM_CMD_SET_PS:
1103                 if (!tb[HWSIM_TM_ATTR_PS])
1104                         return -EINVAL;
1105                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1106                 return hwsim_fops_ps_write(hwsim, ps);
1107         case HWSIM_TM_CMD_GET_PS:
1108                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1109                                                 nla_total_size(sizeof(u32)));
1110                 if (!skb)
1111                         return -ENOMEM;
1112                 NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
1113                 return cfg80211_testmode_reply(skb);
1114         default:
1115                 return -EOPNOTSUPP;
1116         }
1117
1118  nla_put_failure:
1119         kfree_skb(skb);
1120         return -ENOBUFS;
1121 }
1122 #endif
1123
1124 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1125                                        struct ieee80211_vif *vif,
1126                                        enum ieee80211_ampdu_mlme_action action,
1127                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1128                                        u8 buf_size)
1129 {
1130         switch (action) {
1131         case IEEE80211_AMPDU_TX_START:
1132                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1133                 break;
1134         case IEEE80211_AMPDU_TX_STOP:
1135                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1136                 break;
1137         case IEEE80211_AMPDU_TX_OPERATIONAL:
1138                 break;
1139         case IEEE80211_AMPDU_RX_START:
1140         case IEEE80211_AMPDU_RX_STOP:
1141                 break;
1142         default:
1143                 return -EOPNOTSUPP;
1144         }
1145
1146         return 0;
1147 }
1148
1149 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1150 {
1151         /* Not implemented, queues only on kernel side */
1152 }
1153
1154 struct hw_scan_done {
1155         struct delayed_work w;
1156         struct ieee80211_hw *hw;
1157 };
1158
1159 static void hw_scan_done(struct work_struct *work)
1160 {
1161         struct hw_scan_done *hsd =
1162                 container_of(work, struct hw_scan_done, w.work);
1163
1164         ieee80211_scan_completed(hsd->hw, false);
1165         kfree(hsd);
1166 }
1167
1168 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1169                                   struct ieee80211_vif *vif,
1170                                   struct cfg80211_scan_request *req)
1171 {
1172         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1173         int i;
1174
1175         if (!hsd)
1176                 return -ENOMEM;
1177
1178         hsd->hw = hw;
1179         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1180
1181         printk(KERN_DEBUG "hwsim hw_scan request\n");
1182         for (i = 0; i < req->n_channels; i++)
1183                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1184                         req->channels[i]->center_freq);
1185         print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1186                         16, 1, req->ie, req->ie_len, 1);
1187
1188         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1189
1190         return 0;
1191 }
1192
1193 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1194 {
1195         struct mac80211_hwsim_data *hwsim = hw->priv;
1196
1197         mutex_lock(&hwsim->mutex);
1198
1199         if (hwsim->scanning) {
1200                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1201                 goto out;
1202         }
1203
1204         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1205         hwsim->scanning = true;
1206
1207 out:
1208         mutex_unlock(&hwsim->mutex);
1209 }
1210
1211 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1212 {
1213         struct mac80211_hwsim_data *hwsim = hw->priv;
1214
1215         mutex_lock(&hwsim->mutex);
1216
1217         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1218         hwsim->scanning = false;
1219
1220         mutex_unlock(&hwsim->mutex);
1221 }
1222
1223 static struct ieee80211_ops mac80211_hwsim_ops =
1224 {
1225         .tx = mac80211_hwsim_tx,
1226         .start = mac80211_hwsim_start,
1227         .stop = mac80211_hwsim_stop,
1228         .add_interface = mac80211_hwsim_add_interface,
1229         .change_interface = mac80211_hwsim_change_interface,
1230         .remove_interface = mac80211_hwsim_remove_interface,
1231         .config = mac80211_hwsim_config,
1232         .configure_filter = mac80211_hwsim_configure_filter,
1233         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1234         .sta_add = mac80211_hwsim_sta_add,
1235         .sta_remove = mac80211_hwsim_sta_remove,
1236         .sta_notify = mac80211_hwsim_sta_notify,
1237         .set_tim = mac80211_hwsim_set_tim,
1238         .conf_tx = mac80211_hwsim_conf_tx,
1239         .get_survey = mac80211_hwsim_get_survey,
1240         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1241         .ampdu_action = mac80211_hwsim_ampdu_action,
1242         .sw_scan_start = mac80211_hwsim_sw_scan,
1243         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1244         .flush = mac80211_hwsim_flush,
1245         .get_tsf = mac80211_hwsim_get_tsf,
1246         .set_tsf = mac80211_hwsim_set_tsf,
1247 };
1248
1249
1250 static void mac80211_hwsim_free(void)
1251 {
1252         struct list_head tmplist, *i, *tmp;
1253         struct mac80211_hwsim_data *data, *tmpdata;
1254
1255         INIT_LIST_HEAD(&tmplist);
1256
1257         spin_lock_bh(&hwsim_radio_lock);
1258         list_for_each_safe(i, tmp, &hwsim_radios)
1259                 list_move(i, &tmplist);
1260         spin_unlock_bh(&hwsim_radio_lock);
1261
1262         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1263                 debugfs_remove(data->debugfs_group);
1264                 debugfs_remove(data->debugfs_ps);
1265                 debugfs_remove(data->debugfs);
1266                 ieee80211_unregister_hw(data->hw);
1267                 device_unregister(data->dev);
1268                 ieee80211_free_hw(data->hw);
1269         }
1270         class_destroy(hwsim_class);
1271 }
1272
1273
1274 static struct device_driver mac80211_hwsim_driver = {
1275         .name = "mac80211_hwsim"
1276 };
1277
1278 static const struct net_device_ops hwsim_netdev_ops = {
1279         .ndo_start_xmit         = hwsim_mon_xmit,
1280         .ndo_change_mtu         = eth_change_mtu,
1281         .ndo_set_mac_address    = eth_mac_addr,
1282         .ndo_validate_addr      = eth_validate_addr,
1283 };
1284
1285 static void hwsim_mon_setup(struct net_device *dev)
1286 {
1287         dev->netdev_ops = &hwsim_netdev_ops;
1288         dev->destructor = free_netdev;
1289         ether_setup(dev);
1290         dev->tx_queue_len = 0;
1291         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1292         memset(dev->dev_addr, 0, ETH_ALEN);
1293         dev->dev_addr[0] = 0x12;
1294 }
1295
1296
1297 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1298 {
1299         struct mac80211_hwsim_data *data = dat;
1300         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1301         struct sk_buff *skb;
1302         struct ieee80211_pspoll *pspoll;
1303         u32 _pid;
1304
1305         if (!vp->assoc)
1306                 return;
1307
1308         wiphy_debug(data->hw->wiphy,
1309                     "%s: send PS-Poll to %pM for aid %d\n",
1310                     __func__, vp->bssid, vp->aid);
1311
1312         skb = dev_alloc_skb(sizeof(*pspoll));
1313         if (!skb)
1314                 return;
1315         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1316         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1317                                             IEEE80211_STYPE_PSPOLL |
1318                                             IEEE80211_FCTL_PM);
1319         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1320         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1321         memcpy(pspoll->ta, mac, ETH_ALEN);
1322
1323         /* wmediumd mode check */
1324         _pid = ACCESS_ONCE(wmediumd_pid);
1325
1326         if (_pid)
1327                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1328
1329         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1330                 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1331         dev_kfree_skb(skb);
1332 }
1333
1334
1335 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1336                                 struct ieee80211_vif *vif, int ps)
1337 {
1338         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1339         struct sk_buff *skb;
1340         struct ieee80211_hdr *hdr;
1341         u32 _pid;
1342
1343         if (!vp->assoc)
1344                 return;
1345
1346         wiphy_debug(data->hw->wiphy,
1347                     "%s: send data::nullfunc to %pM ps=%d\n",
1348                     __func__, vp->bssid, ps);
1349
1350         skb = dev_alloc_skb(sizeof(*hdr));
1351         if (!skb)
1352                 return;
1353         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1354         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1355                                          IEEE80211_STYPE_NULLFUNC |
1356                                          (ps ? IEEE80211_FCTL_PM : 0));
1357         hdr->duration_id = cpu_to_le16(0);
1358         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1359         memcpy(hdr->addr2, mac, ETH_ALEN);
1360         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1361
1362         /* wmediumd mode check */
1363         _pid = ACCESS_ONCE(wmediumd_pid);
1364
1365         if (_pid)
1366                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1367
1368         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1369                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1370         dev_kfree_skb(skb);
1371 }
1372
1373
1374 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1375                                    struct ieee80211_vif *vif)
1376 {
1377         struct mac80211_hwsim_data *data = dat;
1378         hwsim_send_nullfunc(data, mac, vif, 1);
1379 }
1380
1381
1382 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1383                                       struct ieee80211_vif *vif)
1384 {
1385         struct mac80211_hwsim_data *data = dat;
1386         hwsim_send_nullfunc(data, mac, vif, 0);
1387 }
1388
1389
1390 static int hwsim_fops_ps_read(void *dat, u64 *val)
1391 {
1392         struct mac80211_hwsim_data *data = dat;
1393         *val = data->ps;
1394         return 0;
1395 }
1396
1397 static int hwsim_fops_ps_write(void *dat, u64 val)
1398 {
1399         struct mac80211_hwsim_data *data = dat;
1400         enum ps_mode old_ps;
1401
1402         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1403             val != PS_MANUAL_POLL)
1404                 return -EINVAL;
1405
1406         old_ps = data->ps;
1407         data->ps = val;
1408
1409         if (val == PS_MANUAL_POLL) {
1410                 ieee80211_iterate_active_interfaces(data->hw,
1411                                                     hwsim_send_ps_poll, data);
1412                 data->ps_poll_pending = true;
1413         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1414                 ieee80211_iterate_active_interfaces(data->hw,
1415                                                     hwsim_send_nullfunc_ps,
1416                                                     data);
1417         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1418                 ieee80211_iterate_active_interfaces(data->hw,
1419                                                     hwsim_send_nullfunc_no_ps,
1420                                                     data);
1421         }
1422
1423         return 0;
1424 }
1425
1426 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1427                         "%llu\n");
1428
1429
1430 static int hwsim_fops_group_read(void *dat, u64 *val)
1431 {
1432         struct mac80211_hwsim_data *data = dat;
1433         *val = data->group;
1434         return 0;
1435 }
1436
1437 static int hwsim_fops_group_write(void *dat, u64 val)
1438 {
1439         struct mac80211_hwsim_data *data = dat;
1440         data->group = val;
1441         return 0;
1442 }
1443
1444 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1445                         hwsim_fops_group_read, hwsim_fops_group_write,
1446                         "%llx\n");
1447
1448 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1449                              struct mac_address *addr)
1450 {
1451         struct mac80211_hwsim_data *data;
1452         bool _found = false;
1453
1454         spin_lock_bh(&hwsim_radio_lock);
1455         list_for_each_entry(data, &hwsim_radios, list) {
1456                 if (memcmp(data->addresses[1].addr, addr,
1457                           sizeof(struct mac_address)) == 0) {
1458                         _found = true;
1459                         break;
1460                 }
1461         }
1462         spin_unlock_bh(&hwsim_radio_lock);
1463
1464         if (!_found)
1465                 return NULL;
1466
1467         return data;
1468 }
1469
1470 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1471                                            struct genl_info *info)
1472 {
1473
1474         struct ieee80211_hdr *hdr;
1475         struct mac80211_hwsim_data *data2;
1476         struct ieee80211_tx_info *txi;
1477         struct hwsim_tx_rate *tx_attempts;
1478         struct sk_buff __user *ret_skb;
1479         struct sk_buff *skb, *tmp;
1480         struct mac_address *src;
1481         unsigned int hwsim_flags;
1482
1483         int i;
1484         bool found = false;
1485
1486         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1487            !info->attrs[HWSIM_ATTR_FLAGS] ||
1488            !info->attrs[HWSIM_ATTR_COOKIE] ||
1489            !info->attrs[HWSIM_ATTR_TX_INFO])
1490                 goto out;
1491
1492         src = (struct mac_address *)nla_data(
1493                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1494         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1495
1496         ret_skb = (struct sk_buff __user *)
1497                   (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1498
1499         data2 = get_hwsim_data_ref_from_addr(src);
1500
1501         if (data2 == NULL)
1502                 goto out;
1503
1504         /* look for the skb matching the cookie passed back from user */
1505         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1506                 if (skb == ret_skb) {
1507                         skb_unlink(skb, &data2->pending);
1508                         found = true;
1509                         break;
1510                 }
1511         }
1512
1513         /* not found */
1514         if (!found)
1515                 goto out;
1516
1517         /* Tx info received because the frame was broadcasted on user space,
1518          so we get all the necessary info: tx attempts and skb control buff */
1519
1520         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1521                        info->attrs[HWSIM_ATTR_TX_INFO]);
1522
1523         /* now send back TX status */
1524         txi = IEEE80211_SKB_CB(skb);
1525
1526         if (txi->control.vif)
1527                 hwsim_check_magic(txi->control.vif);
1528         if (txi->control.sta)
1529                 hwsim_check_sta_magic(txi->control.sta);
1530
1531         ieee80211_tx_info_clear_status(txi);
1532
1533         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1534                 txi->status.rates[i].idx = tx_attempts[i].idx;
1535                 txi->status.rates[i].count = tx_attempts[i].count;
1536                 /*txi->status.rates[i].flags = 0;*/
1537         }
1538
1539         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1540
1541         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1542            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1543                 if (skb->len >= 16) {
1544                         hdr = (struct ieee80211_hdr *) skb->data;
1545                         mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1546                 }
1547         }
1548         ieee80211_tx_status_irqsafe(data2->hw, skb);
1549         return 0;
1550 out:
1551         return -EINVAL;
1552
1553 }
1554
1555 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1556                                           struct genl_info *info)
1557 {
1558
1559         struct mac80211_hwsim_data  *data2;
1560         struct ieee80211_rx_status rx_status;
1561         struct mac_address *dst;
1562         int frame_data_len;
1563         char *frame_data;
1564         struct sk_buff *skb = NULL;
1565
1566         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1567            !info->attrs[HWSIM_ATTR_FRAME] ||
1568            !info->attrs[HWSIM_ATTR_RX_RATE] ||
1569            !info->attrs[HWSIM_ATTR_SIGNAL])
1570                 goto out;
1571
1572         dst = (struct mac_address *)nla_data(
1573                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1574
1575         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1576         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1577
1578         /* Allocate new skb here */
1579         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1580         if (skb == NULL)
1581                 goto err;
1582
1583         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1584                 /* Copy the data */
1585                 memcpy(skb_put(skb, frame_data_len), frame_data,
1586                        frame_data_len);
1587         } else
1588                 goto err;
1589
1590         data2 = get_hwsim_data_ref_from_addr(dst);
1591
1592         if (data2 == NULL)
1593                 goto out;
1594
1595         /* check if radio is configured properly */
1596
1597         if (data2->idle || !data2->started || !data2->channel)
1598                 goto out;
1599
1600         /*A frame is received from user space*/
1601         memset(&rx_status, 0, sizeof(rx_status));
1602         rx_status.freq = data2->channel->center_freq;
1603         rx_status.band = data2->channel->band;
1604         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1605         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1606
1607         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1608         ieee80211_rx_irqsafe(data2->hw, skb);
1609
1610         return 0;
1611 err:
1612         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1613         goto out;
1614 out:
1615         dev_kfree_skb(skb);
1616         return -EINVAL;
1617 }
1618
1619 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1620                                       struct genl_info *info)
1621 {
1622         if (info == NULL)
1623                 goto out;
1624
1625         wmediumd_pid = info->snd_pid;
1626
1627         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1628                "switching to wmediumd mode with pid %d\n", info->snd_pid);
1629
1630         return 0;
1631 out:
1632         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1633         return -EINVAL;
1634 }
1635
1636 /* Generic Netlink operations array */
1637 static struct genl_ops hwsim_ops[] = {
1638         {
1639                 .cmd = HWSIM_CMD_REGISTER,
1640                 .policy = hwsim_genl_policy,
1641                 .doit = hwsim_register_received_nl,
1642                 .flags = GENL_ADMIN_PERM,
1643         },
1644         {
1645                 .cmd = HWSIM_CMD_FRAME,
1646                 .policy = hwsim_genl_policy,
1647                 .doit = hwsim_cloned_frame_received_nl,
1648         },
1649         {
1650                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1651                 .policy = hwsim_genl_policy,
1652                 .doit = hwsim_tx_info_frame_received_nl,
1653         },
1654 };
1655
1656 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1657                                          unsigned long state,
1658                                          void *_notify)
1659 {
1660         struct netlink_notify *notify = _notify;
1661
1662         if (state != NETLINK_URELEASE)
1663                 return NOTIFY_DONE;
1664
1665         if (notify->pid == wmediumd_pid) {
1666                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1667                        " socket, switching to perfect channel medium\n");
1668                 wmediumd_pid = 0;
1669         }
1670         return NOTIFY_DONE;
1671
1672 }
1673
1674 static struct notifier_block hwsim_netlink_notifier = {
1675         .notifier_call = mac80211_hwsim_netlink_notify,
1676 };
1677
1678 static int hwsim_init_netlink(void)
1679 {
1680         int rc;
1681         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1682
1683         rc = genl_register_family_with_ops(&hwsim_genl_family,
1684                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1685         if (rc)
1686                 goto failure;
1687
1688         rc = netlink_register_notifier(&hwsim_netlink_notifier);
1689         if (rc)
1690                 goto failure;
1691
1692         return 0;
1693
1694 failure:
1695         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1696         return -EINVAL;
1697 }
1698
1699 static void hwsim_exit_netlink(void)
1700 {
1701         int ret;
1702
1703         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1704         /* unregister the notifier */
1705         netlink_unregister_notifier(&hwsim_netlink_notifier);
1706         /* unregister the family */
1707         ret = genl_unregister_family(&hwsim_genl_family);
1708         if (ret)
1709                 printk(KERN_DEBUG "mac80211_hwsim: "
1710                        "unregister family %i\n", ret);
1711 }
1712
1713 static int __init init_mac80211_hwsim(void)
1714 {
1715         int i, err = 0;
1716         u8 addr[ETH_ALEN];
1717         struct mac80211_hwsim_data *data;
1718         struct ieee80211_hw *hw;
1719         enum ieee80211_band band;
1720
1721         if (radios < 1 || radios > 100)
1722                 return -EINVAL;
1723
1724         if (fake_hw_scan) {
1725                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1726                 mac80211_hwsim_ops.sw_scan_start = NULL;
1727                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1728         }
1729
1730         spin_lock_init(&hwsim_radio_lock);
1731         INIT_LIST_HEAD(&hwsim_radios);
1732
1733         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1734         if (IS_ERR(hwsim_class))
1735                 return PTR_ERR(hwsim_class);
1736
1737         memset(addr, 0, ETH_ALEN);
1738         addr[0] = 0x02;
1739
1740         for (i = 0; i < radios; i++) {
1741                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1742                        i);
1743                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1744                 if (!hw) {
1745                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1746                                "failed\n");
1747                         err = -ENOMEM;
1748                         goto failed;
1749                 }
1750                 data = hw->priv;
1751                 data->hw = hw;
1752
1753                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1754                                           "hwsim%d", i);
1755                 if (IS_ERR(data->dev)) {
1756                         printk(KERN_DEBUG
1757                                "mac80211_hwsim: device_create "
1758                                "failed (%ld)\n", PTR_ERR(data->dev));
1759                         err = -ENOMEM;
1760                         goto failed_drvdata;
1761                 }
1762                 data->dev->driver = &mac80211_hwsim_driver;
1763                 skb_queue_head_init(&data->pending);
1764
1765                 SET_IEEE80211_DEV(hw, data->dev);
1766                 addr[3] = i >> 8;
1767                 addr[4] = i;
1768                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1769                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1770                 data->addresses[1].addr[0] |= 0x40;
1771                 hw->wiphy->n_addresses = 2;
1772                 hw->wiphy->addresses = data->addresses;
1773
1774                 if (fake_hw_scan) {
1775                         hw->wiphy->max_scan_ssids = 255;
1776                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1777                 }
1778
1779                 hw->channel_change_time = 1;
1780                 hw->queues = 4;
1781                 hw->wiphy->interface_modes =
1782                         BIT(NL80211_IFTYPE_STATION) |
1783                         BIT(NL80211_IFTYPE_AP) |
1784                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1785                         BIT(NL80211_IFTYPE_P2P_GO) |
1786                         BIT(NL80211_IFTYPE_ADHOC) |
1787                         BIT(NL80211_IFTYPE_MESH_POINT);
1788
1789                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1790                             IEEE80211_HW_SIGNAL_DBM |
1791                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1792                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1793                             IEEE80211_HW_AMPDU_AGGREGATION |
1794                             IEEE80211_HW_WANT_MONITOR_VIF;
1795
1796                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
1797                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1798
1799                 /* ask mac80211 to reserve space for magic */
1800                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1801                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1802
1803                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1804                         sizeof(hwsim_channels_2ghz));
1805                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1806                         sizeof(hwsim_channels_5ghz));
1807                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1808
1809                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1810                         struct ieee80211_supported_band *sband = &data->bands[band];
1811                         switch (band) {
1812                         case IEEE80211_BAND_2GHZ:
1813                                 sband->channels = data->channels_2ghz;
1814                                 sband->n_channels =
1815                                         ARRAY_SIZE(hwsim_channels_2ghz);
1816                                 sband->bitrates = data->rates;
1817                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1818                                 break;
1819                         case IEEE80211_BAND_5GHZ:
1820                                 sband->channels = data->channels_5ghz;
1821                                 sband->n_channels =
1822                                         ARRAY_SIZE(hwsim_channels_5ghz);
1823                                 sband->bitrates = data->rates + 4;
1824                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1825                                 break;
1826                         default:
1827                                 break;
1828                         }
1829
1830                         sband->ht_cap.ht_supported = true;
1831                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1832                                 IEEE80211_HT_CAP_GRN_FLD |
1833                                 IEEE80211_HT_CAP_SGI_40 |
1834                                 IEEE80211_HT_CAP_DSSSCCK40;
1835                         sband->ht_cap.ampdu_factor = 0x3;
1836                         sband->ht_cap.ampdu_density = 0x6;
1837                         memset(&sband->ht_cap.mcs, 0,
1838                                sizeof(sband->ht_cap.mcs));
1839                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1840                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1841                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1842
1843                         hw->wiphy->bands[band] = sband;
1844                 }
1845                 /* By default all radios are belonging to the first group */
1846                 data->group = 1;
1847                 mutex_init(&data->mutex);
1848
1849                 /* Enable frame retransmissions for lossy channels */
1850                 hw->max_rates = 4;
1851                 hw->max_rate_tries = 11;
1852
1853                 /* Work to be done prior to ieee80211_register_hw() */
1854                 switch (regtest) {
1855                 case HWSIM_REGTEST_DISABLED:
1856                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1857                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1858                 case HWSIM_REGTEST_DIFF_COUNTRY:
1859                         /*
1860                          * Nothing to be done for driver regulatory domain
1861                          * hints prior to ieee80211_register_hw()
1862                          */
1863                         break;
1864                 case HWSIM_REGTEST_WORLD_ROAM:
1865                         if (i == 0) {
1866                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1867                                 wiphy_apply_custom_regulatory(hw->wiphy,
1868                                         &hwsim_world_regdom_custom_01);
1869                         }
1870                         break;
1871                 case HWSIM_REGTEST_CUSTOM_WORLD:
1872                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1873                         wiphy_apply_custom_regulatory(hw->wiphy,
1874                                 &hwsim_world_regdom_custom_01);
1875                         break;
1876                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1877                         if (i == 0) {
1878                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1879                                 wiphy_apply_custom_regulatory(hw->wiphy,
1880                                         &hwsim_world_regdom_custom_01);
1881                         } else if (i == 1) {
1882                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1883                                 wiphy_apply_custom_regulatory(hw->wiphy,
1884                                         &hwsim_world_regdom_custom_02);
1885                         }
1886                         break;
1887                 case HWSIM_REGTEST_STRICT_ALL:
1888                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1889                         break;
1890                 case HWSIM_REGTEST_STRICT_FOLLOW:
1891                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1892                         if (i == 0)
1893                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1894                         break;
1895                 case HWSIM_REGTEST_ALL:
1896                         if (i == 0) {
1897                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1898                                 wiphy_apply_custom_regulatory(hw->wiphy,
1899                                         &hwsim_world_regdom_custom_01);
1900                         } else if (i == 1) {
1901                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1902                                 wiphy_apply_custom_regulatory(hw->wiphy,
1903                                         &hwsim_world_regdom_custom_02);
1904                         } else if (i == 4)
1905                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1906                         break;
1907                 default:
1908                         break;
1909                 }
1910
1911                 /* give the regulatory workqueue a chance to run */
1912                 if (regtest)
1913                         schedule_timeout_interruptible(1);
1914                 err = ieee80211_register_hw(hw);
1915                 if (err < 0) {
1916                         printk(KERN_DEBUG "mac80211_hwsim: "
1917                                "ieee80211_register_hw failed (%d)\n", err);
1918                         goto failed_hw;
1919                 }
1920
1921                 /* Work to be done after to ieee80211_register_hw() */
1922                 switch (regtest) {
1923                 case HWSIM_REGTEST_WORLD_ROAM:
1924                 case HWSIM_REGTEST_DISABLED:
1925                         break;
1926                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1927                         if (!i)
1928                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1929                         break;
1930                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1931                 case HWSIM_REGTEST_STRICT_ALL:
1932                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1933                         break;
1934                 case HWSIM_REGTEST_DIFF_COUNTRY:
1935                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1936                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1937                         break;
1938                 case HWSIM_REGTEST_CUSTOM_WORLD:
1939                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1940                         /*
1941                          * Nothing to be done for custom world regulatory
1942                          * domains after to ieee80211_register_hw
1943                          */
1944                         break;
1945                 case HWSIM_REGTEST_STRICT_FOLLOW:
1946                         if (i == 0)
1947                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1948                         break;
1949                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1950                         if (i == 0)
1951                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1952                         else if (i == 1)
1953                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1954                         break;
1955                 case HWSIM_REGTEST_ALL:
1956                         if (i == 2)
1957                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1958                         else if (i == 3)
1959                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1960                         else if (i == 4)
1961                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1962                         break;
1963                 default:
1964                         break;
1965                 }
1966
1967                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1968                             hw->wiphy->perm_addr);
1969
1970                 data->debugfs = debugfs_create_dir("hwsim",
1971                                                    hw->wiphy->debugfsdir);
1972                 data->debugfs_ps = debugfs_create_file("ps", 0666,
1973                                                        data->debugfs, data,
1974                                                        &hwsim_fops_ps);
1975                 data->debugfs_group = debugfs_create_file("group", 0666,
1976                                                         data->debugfs, data,
1977                                                         &hwsim_fops_group);
1978
1979                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1980                             (unsigned long) hw);
1981
1982                 list_add_tail(&data->list, &hwsim_radios);
1983         }
1984
1985         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1986         if (hwsim_mon == NULL)
1987                 goto failed;
1988
1989         rtnl_lock();
1990
1991         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1992         if (err < 0)
1993                 goto failed_mon;
1994
1995
1996         err = register_netdevice(hwsim_mon);
1997         if (err < 0)
1998                 goto failed_mon;
1999
2000         rtnl_unlock();
2001
2002         err = hwsim_init_netlink();
2003         if (err < 0)
2004                 goto failed_nl;
2005
2006         return 0;
2007
2008 failed_nl:
2009         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2010         return err;
2011
2012 failed_mon:
2013         rtnl_unlock();
2014         free_netdev(hwsim_mon);
2015         mac80211_hwsim_free();
2016         return err;
2017
2018 failed_hw:
2019         device_unregister(data->dev);
2020 failed_drvdata:
2021         ieee80211_free_hw(hw);
2022 failed:
2023         mac80211_hwsim_free();
2024         return err;
2025 }
2026
2027
2028 static void __exit exit_mac80211_hwsim(void)
2029 {
2030         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2031
2032         hwsim_exit_netlink();
2033
2034         mac80211_hwsim_free();
2035         unregister_netdev(hwsim_mon);
2036 }
2037
2038
2039 module_init(init_mac80211_hwsim);
2040 module_exit(exit_mac80211_hwsim);