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 <[email protected]>
   4  * Copyright (c) 2011, Javier Lopez <[email protected]>
   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[IEEE80211_NUM_BANDS];
 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(GENLMSG_DEFAULT_SIZE, 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         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 586                     sizeof(struct mac_address), data->addresses[1].addr))
 587                 goto nla_put_failure;
 588
 589         /* We get the skb->data */
 590         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 591                 goto nla_put_failure;
 592
 593         /* We get the flags for this transmission, and we translate them to
 594            wmediumd flags  */
 595
 596         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 597                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 598
 599         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 600                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 601
 602         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 603                 goto nla_put_failure;
 604
 605         /* We get the tx control (rate and retries) info*/
 606
 607         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 608                 tx_attempts[i].idx = info->status.rates[i].idx;
 609                 tx_attempts[i].count = info->status.rates[i].count;
 610         }
 611
 612         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 613                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 614                     tx_attempts))
 615                 goto nla_put_failure;
 616
 617         /* We create a cookie to identify this skb */
 618         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 619                 goto nla_put_failure;
 620
 621         genlmsg_end(skb, msg_head);
 622         genlmsg_unicast(&init_net, skb, dst_pid);
 623
 624         /* Enqueue the packet */
 625         skb_queue_tail(&data->pending, my_skb);
 626         return;
 627
 628 nla_put_failure:
 629         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 630 }
 631
 632 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 633                                           struct sk_buff *skb)
 634 {
 635         struct mac80211_hwsim_data *data = hw->priv, *data2;
 636         bool ack = false;
 637         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 638         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 639         struct ieee80211_rx_status rx_status;
 640         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 641
 642         if (data->idle) {
 643                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 644                 return false;
 645         }
 646
 647         memset(&rx_status, 0, sizeof(rx_status));
 648         rx_status.flag |= RX_FLAG_MACTIME_MPDU;
 649         rx_status.freq = data->channel->center_freq;
 650         rx_status.band = data->channel->band;
 651         rx_status.rate_idx = info->control.rates[0].idx;
 652         if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 653                 rx_status.flag |= RX_FLAG_HT;
 654         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 655                 rx_status.flag |= RX_FLAG_40MHZ;
 656         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 657                 rx_status.flag |= RX_FLAG_SHORT_GI;
 658         /* TODO: simulate real signal strength (and optional packet loss) */
 659         rx_status.signal = data->power_level - 50;
 660
 661         if (data->ps != PS_DISABLED)
 662                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 663
 664         /* release the skb's source info */
 665         skb_orphan(skb);
 666         skb_dst_drop(skb);
 667         skb->mark = 0;
 668         secpath_reset(skb);
 669         nf_reset(skb);
 670
 671         /* Copy skb to all enabled radios that are on the current frequency */
 672         spin_lock(&hwsim_radio_lock);
 673         list_for_each_entry(data2, &hwsim_radios, list) {
 674                 struct sk_buff *nskb;
 675                 struct ieee80211_mgmt *mgmt;
 676
 677                 if (data == data2)
 678                         continue;
 679
 680                 if (data2->idle || !data2->started ||
 681                     !hwsim_ps_rx_ok(data2, skb) || !data2->channel ||
 682                     data->channel->center_freq != data2->channel->center_freq ||
 683                     !(data->group & data2->group))
 684                         continue;
 685
 686                 nskb = skb_copy(skb, GFP_ATOMIC);
 687                 if (nskb == NULL)
 688                         continue;
 689
 690                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 691                         ack = true;
 692
 693                 /* set bcn timestamp relative to receiver mactime */
 694                 rx_status.mactime =
 695                                 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
 696                 mgmt = (struct ieee80211_mgmt *) nskb->data;
 697                 if (ieee80211_is_beacon(mgmt->frame_control) ||
 698                     ieee80211_is_probe_resp(mgmt->frame_control))
 699                         mgmt->u.beacon.timestamp = cpu_to_le64(
 700                                 rx_status.mactime +
 701                                 (data->tsf_offset - data2->tsf_offset) +
 702                                 24 * 8 * 10 / txrate->bitrate);
 703
 704                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 705                 ieee80211_rx_irqsafe(data2->hw, nskb);
 706         }
 707         spin_unlock(&hwsim_radio_lock);
 708
 709         return ack;
 710 }
 711
 712 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 713 {
 714         bool ack;
 715         struct ieee80211_tx_info *txi;
 716         u32 _pid;
 717
 718         mac80211_hwsim_monitor_rx(hw, skb);
 719
 720         if (skb->len < 10) {
 721                 /* Should not happen; just a sanity check for addr1 use */
 722                 dev_kfree_skb(skb);
 723                 return;
 724         }
 725
 726         /* wmediumd mode check */
 727         _pid = ACCESS_ONCE(wmediumd_pid);
 728
 729         if (_pid)
 730                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 731
 732         /* NO wmediumd detected, perfect medium simulation */
 733         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
 734
 735         if (ack && skb->len >= 16) {
 736                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 737                 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 738         }
 739
 740         txi = IEEE80211_SKB_CB(skb);
 741
 742         ieee80211_tx_info_clear_status(txi);
 743
 744         /* frame was transmitted at most favorable rate at first attempt */
 745         txi->control.rates[0].count = 1;
 746         txi->control.rates[1].idx = -1;
 747
 748         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 749                 txi->flags |= IEEE80211_TX_STAT_ACK;
 750         ieee80211_tx_status_irqsafe(hw, skb);
 751 }
 752
 753
 754 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 755 {
 756         struct mac80211_hwsim_data *data = hw->priv;
 757         wiphy_debug(hw->wiphy, "%s\n", __func__);
 758         data->started = true;
 759         return 0;
 760 }
 761
 762
 763 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 764 {
 765         struct mac80211_hwsim_data *data = hw->priv;
 766         data->started = false;
 767         del_timer(&data->beacon_timer);
 768         wiphy_debug(hw->wiphy, "%s\n", __func__);
 769 }
 770
 771
 772 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 773                                         struct ieee80211_vif *vif)
 774 {
 775         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 776                     __func__, ieee80211_vif_type_p2p(vif),
 777                     vif->addr);
 778         hwsim_set_magic(vif);
 779         return 0;
 780 }
 781
 782
 783 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 784                                            struct ieee80211_vif *vif,
 785                                            enum nl80211_iftype newtype,
 786                                            bool newp2p)
 787 {
 788         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 789         wiphy_debug(hw->wiphy,
 790                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 791                     __func__, ieee80211_vif_type_p2p(vif),
 792                     newtype, vif->addr);
 793         hwsim_check_magic(vif);
 794
 795         return 0;
 796 }
 797
 798 static void mac80211_hwsim_remove_interface(
 799         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 800 {
 801         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 802                     __func__, ieee80211_vif_type_p2p(vif),
 803                     vif->addr);
 804         hwsim_check_magic(vif);
 805         hwsim_clear_magic(vif);
 806 }
 807
 808
 809 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 810                                      struct ieee80211_vif *vif)
 811 {
 812         struct ieee80211_hw *hw = arg;
 813         struct sk_buff *skb;
 814         struct ieee80211_tx_info *info;
 815         u32 _pid;
 816
 817         hwsim_check_magic(vif);
 818
 819         if (vif->type != NL80211_IFTYPE_AP &&
 820             vif->type != NL80211_IFTYPE_MESH_POINT &&
 821             vif->type != NL80211_IFTYPE_ADHOC)
 822                 return;
 823
 824         skb = ieee80211_beacon_get(hw, vif);
 825         if (skb == NULL)
 826                 return;
 827         info = IEEE80211_SKB_CB(skb);
 828
 829         mac80211_hwsim_monitor_rx(hw, skb);
 830
 831         /* wmediumd mode check */
 832         _pid = ACCESS_ONCE(wmediumd_pid);
 833
 834         if (_pid)
 835                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 836
 837         mac80211_hwsim_tx_frame_no_nl(hw, skb);
 838         dev_kfree_skb(skb);
 839 }
 840
 841
 842 static void mac80211_hwsim_beacon(unsigned long arg)
 843 {
 844         struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 845         struct mac80211_hwsim_data *data = hw->priv;
 846
 847         if (!data->started)
 848                 return;
 849
 850         ieee80211_iterate_active_interfaces_atomic(
 851                 hw, mac80211_hwsim_beacon_tx, hw);
 852
 853         data->beacon_timer.expires = jiffies + data->beacon_int;
 854         add_timer(&data->beacon_timer);
 855 }
 856
 857 static const char *hwsim_chantypes[] = {
 858         [NL80211_CHAN_NO_HT] = "noht",
 859         [NL80211_CHAN_HT20] = "ht20",
 860         [NL80211_CHAN_HT40MINUS] = "ht40-",
 861         [NL80211_CHAN_HT40PLUS] = "ht40+",
 862 };
 863
 864 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 865 {
 866         struct mac80211_hwsim_data *data = hw->priv;
 867         struct ieee80211_conf *conf = &hw->conf;
 868         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 869                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
 870                 [IEEE80211_SMPS_OFF] = "off",
 871                 [IEEE80211_SMPS_STATIC] = "static",
 872                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
 873         };
 874
 875         wiphy_debug(hw->wiphy,
 876                     "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 877                     __func__,
 878                     conf->channel->center_freq,
 879                     hwsim_chantypes[conf->channel_type],
 880                     !!(conf->flags & IEEE80211_CONF_IDLE),
 881                     !!(conf->flags & IEEE80211_CONF_PS),
 882                     smps_modes[conf->smps_mode]);
 883
 884         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 885
 886         data->channel = conf->channel;
 887         data->power_level = conf->power_level;
 888         if (!data->started || !data->beacon_int)
 889                 del_timer(&data->beacon_timer);
 890         else
 891                 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 892
 893         return 0;
 894 }
 895
 896
 897 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 898                                             unsigned int changed_flags,
 899                                             unsigned int *total_flags,u64 multicast)
 900 {
 901         struct mac80211_hwsim_data *data = hw->priv;
 902
 903         wiphy_debug(hw->wiphy, "%s\n", __func__);
 904
 905         data->rx_filter = 0;
 906         if (*total_flags & FIF_PROMISC_IN_BSS)
 907                 data->rx_filter |= FIF_PROMISC_IN_BSS;
 908         if (*total_flags & FIF_ALLMULTI)
 909                 data->rx_filter |= FIF_ALLMULTI;
 910
 911         *total_flags = data->rx_filter;
 912 }
 913
 914 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 915                                             struct ieee80211_vif *vif,
 916                                             struct ieee80211_bss_conf *info,
 917                                             u32 changed)
 918 {
 919         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 920         struct mac80211_hwsim_data *data = hw->priv;
 921
 922         hwsim_check_magic(vif);
 923
 924         wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
 925
 926         if (changed & BSS_CHANGED_BSSID) {
 927                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
 928                             __func__, info->bssid);
 929                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
 930         }
 931
 932         if (changed & BSS_CHANGED_ASSOC) {
 933                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
 934                             info->assoc, info->aid);
 935                 vp->assoc = info->assoc;
 936                 vp->aid = info->aid;
 937         }
 938
 939         if (changed & BSS_CHANGED_BEACON_INT) {
 940                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
 941                 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 942                 if (WARN_ON(!data->beacon_int))
 943                         data->beacon_int = 1;
 944                 if (data->started)
 945                         mod_timer(&data->beacon_timer,
 946                                   jiffies + data->beacon_int);
 947         }
 948
 949         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 950                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
 951                             info->use_cts_prot);
 952         }
 953
 954         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 955                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
 956                             info->use_short_preamble);
 957         }
 958
 959         if (changed & BSS_CHANGED_ERP_SLOT) {
 960                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
 961         }
 962
 963         if (changed & BSS_CHANGED_HT) {
 964                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
 965                             info->ht_operation_mode,
 966                             hwsim_chantypes[info->channel_type]);
 967         }
 968
 969         if (changed & BSS_CHANGED_BASIC_RATES) {
 970                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
 971                             (unsigned long long) info->basic_rates);
 972         }
 973 }
 974
 975 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 976                                   struct ieee80211_vif *vif,
 977                                   struct ieee80211_sta *sta)
 978 {
 979         hwsim_check_magic(vif);
 980         hwsim_set_sta_magic(sta);
 981
 982         return 0;
 983 }
 984
 985 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 986                                      struct ieee80211_vif *vif,
 987                                      struct ieee80211_sta *sta)
 988 {
 989         hwsim_check_magic(vif);
 990         hwsim_clear_sta_magic(sta);
 991
 992         return 0;
 993 }
 994
 995 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 996                                       struct ieee80211_vif *vif,
 997                                       enum sta_notify_cmd cmd,
 998                                       struct ieee80211_sta *sta)
 999 {
1000         hwsim_check_magic(vif);
1001
1002         switch (cmd) {
1003         case STA_NOTIFY_SLEEP:
1004         case STA_NOTIFY_AWAKE:
1005                 /* TODO: make good use of these flags */
1006                 break;
1007         default:
1008                 WARN(1, "Invalid sta notify: %d\n", cmd);
1009                 break;
1010         }
1011 }
1012
1013 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1014                                   struct ieee80211_sta *sta,
1015                                   bool set)
1016 {
1017         hwsim_check_sta_magic(sta);
1018         return 0;
1019 }
1020
1021 static int mac80211_hwsim_conf_tx(
1022         struct ieee80211_hw *hw,
1023         struct ieee80211_vif *vif, u16 queue,
1024         const struct ieee80211_tx_queue_params *params)
1025 {
1026         wiphy_debug(hw->wiphy,
1027                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1028                     __func__, queue,
1029                     params->txop, params->cw_min,
1030                     params->cw_max, params->aifs);
1031         return 0;
1032 }
1033
1034 static int mac80211_hwsim_get_survey(
1035         struct ieee80211_hw *hw, int idx,
1036         struct survey_info *survey)
1037 {
1038         struct ieee80211_conf *conf = &hw->conf;
1039
1040         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1041
1042         if (idx != 0)
1043                 return -ENOENT;
1044
1045         /* Current channel */
1046         survey->channel = conf->channel;
1047
1048         /*
1049          * Magically conjured noise level --- this is only ok for simulated hardware.
1050          *
1051          * A real driver which cannot determine the real channel noise MUST NOT
1052          * report any noise, especially not a magically conjured one :-)
1053          */
1054         survey->filled = SURVEY_INFO_NOISE_DBM;
1055         survey->noise = -92;
1056
1057         return 0;
1058 }
1059
1060 #ifdef CONFIG_NL80211_TESTMODE
1061 /*
1062  * This section contains example code for using netlink
1063  * attributes with the testmode command in nl80211.
1064  */
1065
1066 /* These enums need to be kept in sync with userspace */
1067 enum hwsim_testmode_attr {
1068         __HWSIM_TM_ATTR_INVALID = 0,
1069         HWSIM_TM_ATTR_CMD       = 1,
1070         HWSIM_TM_ATTR_PS        = 2,
1071
1072         /* keep last */
1073         __HWSIM_TM_ATTR_AFTER_LAST,
1074         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1075 };
1076
1077 enum hwsim_testmode_cmd {
1078         HWSIM_TM_CMD_SET_PS             = 0,
1079         HWSIM_TM_CMD_GET_PS             = 1,
1080         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1081         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1082 };
1083
1084 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1085         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1086         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1087 };
1088
1089 static int hwsim_fops_ps_write(void *dat, u64 val);
1090
1091 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1092                                        void *data, int len)
1093 {
1094         struct mac80211_hwsim_data *hwsim = hw->priv;
1095         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1096         struct sk_buff *skb;
1097         int err, ps;
1098
1099         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1100                         hwsim_testmode_policy);
1101         if (err)
1102                 return err;
1103
1104         if (!tb[HWSIM_TM_ATTR_CMD])
1105                 return -EINVAL;
1106
1107         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1108         case HWSIM_TM_CMD_SET_PS:
1109                 if (!tb[HWSIM_TM_ATTR_PS])
1110                         return -EINVAL;
1111                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1112                 return hwsim_fops_ps_write(hwsim, ps);
1113         case HWSIM_TM_CMD_GET_PS:
1114                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1115                                                 nla_total_size(sizeof(u32)));
1116                 if (!skb)
1117                         return -ENOMEM;
1118                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1119                         goto nla_put_failure;
1120                 return cfg80211_testmode_reply(skb);
1121         case HWSIM_TM_CMD_STOP_QUEUES:
1122                 ieee80211_stop_queues(hw);
1123                 return 0;
1124         case HWSIM_TM_CMD_WAKE_QUEUES:
1125                 ieee80211_wake_queues(hw);
1126                 return 0;
1127         default:
1128                 return -EOPNOTSUPP;
1129         }
1130
1131  nla_put_failure:
1132         kfree_skb(skb);
1133         return -ENOBUFS;
1134 }
1135 #endif
1136
1137 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1138                                        struct ieee80211_vif *vif,
1139                                        enum ieee80211_ampdu_mlme_action action,
1140                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1141                                        u8 buf_size)
1142 {
1143         switch (action) {
1144         case IEEE80211_AMPDU_TX_START:
1145                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1146                 break;
1147         case IEEE80211_AMPDU_TX_STOP:
1148                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1149                 break;
1150         case IEEE80211_AMPDU_TX_OPERATIONAL:
1151                 break;
1152         case IEEE80211_AMPDU_RX_START:
1153         case IEEE80211_AMPDU_RX_STOP:
1154                 break;
1155         default:
1156                 return -EOPNOTSUPP;
1157         }
1158
1159         return 0;
1160 }
1161
1162 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1163 {
1164         /* Not implemented, queues only on kernel side */
1165 }
1166
1167 struct hw_scan_done {
1168         struct delayed_work w;
1169         struct ieee80211_hw *hw;
1170 };
1171
1172 static void hw_scan_done(struct work_struct *work)
1173 {
1174         struct hw_scan_done *hsd =
1175                 container_of(work, struct hw_scan_done, w.work);
1176
1177         ieee80211_scan_completed(hsd->hw, false);
1178         kfree(hsd);
1179 }
1180
1181 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1182                                   struct ieee80211_vif *vif,
1183                                   struct cfg80211_scan_request *req)
1184 {
1185         struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1186         int i;
1187
1188         if (!hsd)
1189                 return -ENOMEM;
1190
1191         hsd->hw = hw;
1192         INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1193
1194         printk(KERN_DEBUG "hwsim hw_scan request\n");
1195         for (i = 0; i < req->n_channels; i++)
1196                 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1197                         req->channels[i]->center_freq);
1198         print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1199                         16, 1, req->ie, req->ie_len, 1);
1200
1201         ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1202
1203         return 0;
1204 }
1205
1206 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1207 {
1208         struct mac80211_hwsim_data *hwsim = hw->priv;
1209
1210         mutex_lock(&hwsim->mutex);
1211
1212         if (hwsim->scanning) {
1213                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1214                 goto out;
1215         }
1216
1217         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1218         hwsim->scanning = true;
1219
1220 out:
1221         mutex_unlock(&hwsim->mutex);
1222 }
1223
1224 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1225 {
1226         struct mac80211_hwsim_data *hwsim = hw->priv;
1227
1228         mutex_lock(&hwsim->mutex);
1229
1230         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1231         hwsim->scanning = false;
1232
1233         mutex_unlock(&hwsim->mutex);
1234 }
1235
1236 static struct ieee80211_ops mac80211_hwsim_ops =
1237 {
1238         .tx = mac80211_hwsim_tx,
1239         .start = mac80211_hwsim_start,
1240         .stop = mac80211_hwsim_stop,
1241         .add_interface = mac80211_hwsim_add_interface,
1242         .change_interface = mac80211_hwsim_change_interface,
1243         .remove_interface = mac80211_hwsim_remove_interface,
1244         .config = mac80211_hwsim_config,
1245         .configure_filter = mac80211_hwsim_configure_filter,
1246         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1247         .sta_add = mac80211_hwsim_sta_add,
1248         .sta_remove = mac80211_hwsim_sta_remove,
1249         .sta_notify = mac80211_hwsim_sta_notify,
1250         .set_tim = mac80211_hwsim_set_tim,
1251         .conf_tx = mac80211_hwsim_conf_tx,
1252         .get_survey = mac80211_hwsim_get_survey,
1253         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1254         .ampdu_action = mac80211_hwsim_ampdu_action,
1255         .sw_scan_start = mac80211_hwsim_sw_scan,
1256         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1257         .flush = mac80211_hwsim_flush,
1258         .get_tsf = mac80211_hwsim_get_tsf,
1259         .set_tsf = mac80211_hwsim_set_tsf,
1260 };
1261
1262
1263 static void mac80211_hwsim_free(void)
1264 {
1265         struct list_head tmplist, *i, *tmp;
1266         struct mac80211_hwsim_data *data, *tmpdata;
1267
1268         INIT_LIST_HEAD(&tmplist);
1269
1270         spin_lock_bh(&hwsim_radio_lock);
1271         list_for_each_safe(i, tmp, &hwsim_radios)
1272                 list_move(i, &tmplist);
1273         spin_unlock_bh(&hwsim_radio_lock);
1274
1275         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1276                 debugfs_remove(data->debugfs_group);
1277                 debugfs_remove(data->debugfs_ps);
1278                 debugfs_remove(data->debugfs);
1279                 ieee80211_unregister_hw(data->hw);
1280                 device_unregister(data->dev);
1281                 ieee80211_free_hw(data->hw);
1282         }
1283         class_destroy(hwsim_class);
1284 }
1285
1286
1287 static struct device_driver mac80211_hwsim_driver = {
1288         .name = "mac80211_hwsim"
1289 };
1290
1291 static const struct net_device_ops hwsim_netdev_ops = {
1292         .ndo_start_xmit         = hwsim_mon_xmit,
1293         .ndo_change_mtu         = eth_change_mtu,
1294         .ndo_set_mac_address    = eth_mac_addr,
1295         .ndo_validate_addr      = eth_validate_addr,
1296 };
1297
1298 static void hwsim_mon_setup(struct net_device *dev)
1299 {
1300         dev->netdev_ops = &hwsim_netdev_ops;
1301         dev->destructor = free_netdev;
1302         ether_setup(dev);
1303         dev->tx_queue_len = 0;
1304         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1305         memset(dev->dev_addr, 0, ETH_ALEN);
1306         dev->dev_addr[0] = 0x12;
1307 }
1308
1309
1310 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1311 {
1312         struct mac80211_hwsim_data *data = dat;
1313         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1314         struct sk_buff *skb;
1315         struct ieee80211_pspoll *pspoll;
1316         u32 _pid;
1317
1318         if (!vp->assoc)
1319                 return;
1320
1321         wiphy_debug(data->hw->wiphy,
1322                     "%s: send PS-Poll to %pM for aid %d\n",
1323                     __func__, vp->bssid, vp->aid);
1324
1325         skb = dev_alloc_skb(sizeof(*pspoll));
1326         if (!skb)
1327                 return;
1328         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1329         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1330                                             IEEE80211_STYPE_PSPOLL |
1331                                             IEEE80211_FCTL_PM);
1332         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1333         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1334         memcpy(pspoll->ta, mac, ETH_ALEN);
1335
1336         /* wmediumd mode check */
1337         _pid = ACCESS_ONCE(wmediumd_pid);
1338
1339         if (_pid)
1340                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1341
1342         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1343                 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1344         dev_kfree_skb(skb);
1345 }
1346
1347
1348 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1349                                 struct ieee80211_vif *vif, int ps)
1350 {
1351         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1352         struct sk_buff *skb;
1353         struct ieee80211_hdr *hdr;
1354         u32 _pid;
1355
1356         if (!vp->assoc)
1357                 return;
1358
1359         wiphy_debug(data->hw->wiphy,
1360                     "%s: send data::nullfunc to %pM ps=%d\n",
1361                     __func__, vp->bssid, ps);
1362
1363         skb = dev_alloc_skb(sizeof(*hdr));
1364         if (!skb)
1365                 return;
1366         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1367         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1368                                          IEEE80211_STYPE_NULLFUNC |
1369                                          (ps ? IEEE80211_FCTL_PM : 0));
1370         hdr->duration_id = cpu_to_le16(0);
1371         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1372         memcpy(hdr->addr2, mac, ETH_ALEN);
1373         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1374
1375         /* wmediumd mode check */
1376         _pid = ACCESS_ONCE(wmediumd_pid);
1377
1378         if (_pid)
1379                 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1380
1381         if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1382                 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1383         dev_kfree_skb(skb);
1384 }
1385
1386
1387 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1388                                    struct ieee80211_vif *vif)
1389 {
1390         struct mac80211_hwsim_data *data = dat;
1391         hwsim_send_nullfunc(data, mac, vif, 1);
1392 }
1393
1394
1395 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1396                                       struct ieee80211_vif *vif)
1397 {
1398         struct mac80211_hwsim_data *data = dat;
1399         hwsim_send_nullfunc(data, mac, vif, 0);
1400 }
1401
1402
1403 static int hwsim_fops_ps_read(void *dat, u64 *val)
1404 {
1405         struct mac80211_hwsim_data *data = dat;
1406         *val = data->ps;
1407         return 0;
1408 }
1409
1410 static int hwsim_fops_ps_write(void *dat, u64 val)
1411 {
1412         struct mac80211_hwsim_data *data = dat;
1413         enum ps_mode old_ps;
1414
1415         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1416             val != PS_MANUAL_POLL)
1417                 return -EINVAL;
1418
1419         old_ps = data->ps;
1420         data->ps = val;
1421
1422         if (val == PS_MANUAL_POLL) {
1423                 ieee80211_iterate_active_interfaces(data->hw,
1424                                                     hwsim_send_ps_poll, data);
1425                 data->ps_poll_pending = true;
1426         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1427                 ieee80211_iterate_active_interfaces(data->hw,
1428                                                     hwsim_send_nullfunc_ps,
1429                                                     data);
1430         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1431                 ieee80211_iterate_active_interfaces(data->hw,
1432                                                     hwsim_send_nullfunc_no_ps,
1433                                                     data);
1434         }
1435
1436         return 0;
1437 }
1438
1439 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1440                         "%llu\n");
1441
1442
1443 static int hwsim_fops_group_read(void *dat, u64 *val)
1444 {
1445         struct mac80211_hwsim_data *data = dat;
1446         *val = data->group;
1447         return 0;
1448 }
1449
1450 static int hwsim_fops_group_write(void *dat, u64 val)
1451 {
1452         struct mac80211_hwsim_data *data = dat;
1453         data->group = val;
1454         return 0;
1455 }
1456
1457 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1458                         hwsim_fops_group_read, hwsim_fops_group_write,
1459                         "%llx\n");
1460
1461 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1462                              struct mac_address *addr)
1463 {
1464         struct mac80211_hwsim_data *data;
1465         bool _found = false;
1466
1467         spin_lock_bh(&hwsim_radio_lock);
1468         list_for_each_entry(data, &hwsim_radios, list) {
1469                 if (memcmp(data->addresses[1].addr, addr,
1470                           sizeof(struct mac_address)) == 0) {
1471                         _found = true;
1472                         break;
1473                 }
1474         }
1475         spin_unlock_bh(&hwsim_radio_lock);
1476
1477         if (!_found)
1478                 return NULL;
1479
1480         return data;
1481 }
1482
1483 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1484                                            struct genl_info *info)
1485 {
1486
1487         struct ieee80211_hdr *hdr;
1488         struct mac80211_hwsim_data *data2;
1489         struct ieee80211_tx_info *txi;
1490         struct hwsim_tx_rate *tx_attempts;
1491         unsigned long ret_skb_ptr;
1492         struct sk_buff *skb, *tmp;
1493         struct mac_address *src;
1494         unsigned int hwsim_flags;
1495
1496         int i;
1497         bool found = false;
1498
1499         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1500            !info->attrs[HWSIM_ATTR_FLAGS] ||
1501            !info->attrs[HWSIM_ATTR_COOKIE] ||
1502            !info->attrs[HWSIM_ATTR_TX_INFO])
1503                 goto out;
1504
1505         src = (struct mac_address *)nla_data(
1506                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1507         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1508
1509         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1510
1511         data2 = get_hwsim_data_ref_from_addr(src);
1512
1513         if (data2 == NULL)
1514                 goto out;
1515
1516         /* look for the skb matching the cookie passed back from user */
1517         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1518                 if ((unsigned long)skb == ret_skb_ptr) {
1519                         skb_unlink(skb, &data2->pending);
1520                         found = true;
1521                         break;
1522                 }
1523         }
1524
1525         /* not found */
1526         if (!found)
1527                 goto out;
1528
1529         /* Tx info received because the frame was broadcasted on user space,
1530          so we get all the necessary info: tx attempts and skb control buff */
1531
1532         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1533                        info->attrs[HWSIM_ATTR_TX_INFO]);
1534
1535         /* now send back TX status */
1536         txi = IEEE80211_SKB_CB(skb);
1537
1538         ieee80211_tx_info_clear_status(txi);
1539
1540         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1541                 txi->status.rates[i].idx = tx_attempts[i].idx;
1542                 txi->status.rates[i].count = tx_attempts[i].count;
1543                 /*txi->status.rates[i].flags = 0;*/
1544         }
1545
1546         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1547
1548         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1549            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1550                 if (skb->len >= 16) {
1551                         hdr = (struct ieee80211_hdr *) skb->data;
1552                         mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1553                 }
1554                 txi->flags |= IEEE80211_TX_STAT_ACK;
1555         }
1556         ieee80211_tx_status_irqsafe(data2->hw, skb);
1557         return 0;
1558 out:
1559         return -EINVAL;
1560
1561 }
1562
1563 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1564                                           struct genl_info *info)
1565 {
1566
1567         struct mac80211_hwsim_data  *data2;
1568         struct ieee80211_rx_status rx_status;
1569         struct mac_address *dst;
1570         int frame_data_len;
1571         char *frame_data;
1572         struct sk_buff *skb = NULL;
1573
1574         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1575            !info->attrs[HWSIM_ATTR_FRAME] ||
1576            !info->attrs[HWSIM_ATTR_RX_RATE] ||
1577            !info->attrs[HWSIM_ATTR_SIGNAL])
1578                 goto out;
1579
1580         dst = (struct mac_address *)nla_data(
1581                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1582
1583         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1584         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1585
1586         /* Allocate new skb here */
1587         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1588         if (skb == NULL)
1589                 goto err;
1590
1591         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1592                 /* Copy the data */
1593                 memcpy(skb_put(skb, frame_data_len), frame_data,
1594                        frame_data_len);
1595         } else
1596                 goto err;
1597
1598         data2 = get_hwsim_data_ref_from_addr(dst);
1599
1600         if (data2 == NULL)
1601                 goto out;
1602
1603         /* check if radio is configured properly */
1604
1605         if (data2->idle || !data2->started || !data2->channel)
1606                 goto out;
1607
1608         /*A frame is received from user space*/
1609         memset(&rx_status, 0, sizeof(rx_status));
1610         rx_status.freq = data2->channel->center_freq;
1611         rx_status.band = data2->channel->band;
1612         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1613         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1614
1615         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1616         ieee80211_rx_irqsafe(data2->hw, skb);
1617
1618         return 0;
1619 err:
1620         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1621         goto out;
1622 out:
1623         dev_kfree_skb(skb);
1624         return -EINVAL;
1625 }
1626
1627 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1628                                       struct genl_info *info)
1629 {
1630         if (info == NULL)
1631                 goto out;
1632
1633         wmediumd_pid = info->snd_pid;
1634
1635         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1636                "switching to wmediumd mode with pid %d\n", info->snd_pid);
1637
1638         return 0;
1639 out:
1640         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1641         return -EINVAL;
1642 }
1643
1644 /* Generic Netlink operations array */
1645 static struct genl_ops hwsim_ops[] = {
1646         {
1647                 .cmd = HWSIM_CMD_REGISTER,
1648                 .policy = hwsim_genl_policy,
1649                 .doit = hwsim_register_received_nl,
1650                 .flags = GENL_ADMIN_PERM,
1651         },
1652         {
1653                 .cmd = HWSIM_CMD_FRAME,
1654                 .policy = hwsim_genl_policy,
1655                 .doit = hwsim_cloned_frame_received_nl,
1656         },
1657         {
1658                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1659                 .policy = hwsim_genl_policy,
1660                 .doit = hwsim_tx_info_frame_received_nl,
1661         },
1662 };
1663
1664 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1665                                          unsigned long state,
1666                                          void *_notify)
1667 {
1668         struct netlink_notify *notify = _notify;
1669
1670         if (state != NETLINK_URELEASE)
1671                 return NOTIFY_DONE;
1672
1673         if (notify->pid == wmediumd_pid) {
1674                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1675                        " socket, switching to perfect channel medium\n");
1676                 wmediumd_pid = 0;
1677         }
1678         return NOTIFY_DONE;
1679
1680 }
1681
1682 static struct notifier_block hwsim_netlink_notifier = {
1683         .notifier_call = mac80211_hwsim_netlink_notify,
1684 };
1685
1686 static int hwsim_init_netlink(void)
1687 {
1688         int rc;
1689         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1690
1691         rc = genl_register_family_with_ops(&hwsim_genl_family,
1692                 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1693         if (rc)
1694                 goto failure;
1695
1696         rc = netlink_register_notifier(&hwsim_netlink_notifier);
1697         if (rc)
1698                 goto failure;
1699
1700         return 0;
1701
1702 failure:
1703         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1704         return -EINVAL;
1705 }
1706
1707 static void hwsim_exit_netlink(void)
1708 {
1709         int ret;
1710
1711         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1712         /* unregister the notifier */
1713         netlink_unregister_notifier(&hwsim_netlink_notifier);
1714         /* unregister the family */
1715         ret = genl_unregister_family(&hwsim_genl_family);
1716         if (ret)
1717                 printk(KERN_DEBUG "mac80211_hwsim: "
1718                        "unregister family %i\n", ret);
1719 }
1720
1721 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
1722         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
1723         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
1724                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
1725 #ifdef CONFIG_MAC80211_MESH
1726                                  BIT(NL80211_IFTYPE_MESH_POINT) |
1727 #endif
1728                                  BIT(NL80211_IFTYPE_AP) |
1729                                  BIT(NL80211_IFTYPE_P2P_GO) },
1730 };
1731
1732 static const struct ieee80211_iface_combination hwsim_if_comb = {
1733         .limits = hwsim_if_limits,
1734         .n_limits = ARRAY_SIZE(hwsim_if_limits),
1735         .max_interfaces = 2048,
1736         .num_different_channels = 1,
1737 };
1738
1739 static int __init init_mac80211_hwsim(void)
1740 {
1741         int i, err = 0;
1742         u8 addr[ETH_ALEN];
1743         struct mac80211_hwsim_data *data;
1744         struct ieee80211_hw *hw;
1745         enum ieee80211_band band;
1746
1747         if (radios < 1 || radios > 100)
1748                 return -EINVAL;
1749
1750         if (fake_hw_scan) {
1751                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1752                 mac80211_hwsim_ops.sw_scan_start = NULL;
1753                 mac80211_hwsim_ops.sw_scan_complete = NULL;
1754         }
1755
1756         spin_lock_init(&hwsim_radio_lock);
1757         INIT_LIST_HEAD(&hwsim_radios);
1758
1759         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1760         if (IS_ERR(hwsim_class))
1761                 return PTR_ERR(hwsim_class);
1762
1763         memset(addr, 0, ETH_ALEN);
1764         addr[0] = 0x02;
1765
1766         for (i = 0; i < radios; i++) {
1767                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1768                        i);
1769                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1770                 if (!hw) {
1771                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1772                                "failed\n");
1773                         err = -ENOMEM;
1774                         goto failed;
1775                 }
1776                 data = hw->priv;
1777                 data->hw = hw;
1778
1779                 data->dev = device_create(hwsim_class, NULL, 0, hw,
1780                                           "hwsim%d", i);
1781                 if (IS_ERR(data->dev)) {
1782                         printk(KERN_DEBUG
1783                                "mac80211_hwsim: device_create "
1784                                "failed (%ld)\n", PTR_ERR(data->dev));
1785                         err = -ENOMEM;
1786                         goto failed_drvdata;
1787                 }
1788                 data->dev->driver = &mac80211_hwsim_driver;
1789                 skb_queue_head_init(&data->pending);
1790
1791                 SET_IEEE80211_DEV(hw, data->dev);
1792                 addr[3] = i >> 8;
1793                 addr[4] = i;
1794                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1795                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1796                 data->addresses[1].addr[0] |= 0x40;
1797                 hw->wiphy->n_addresses = 2;
1798                 hw->wiphy->addresses = data->addresses;
1799
1800                 hw->wiphy->iface_combinations = &hwsim_if_comb;
1801                 hw->wiphy->n_iface_combinations = 1;
1802
1803                 if (fake_hw_scan) {
1804                         hw->wiphy->max_scan_ssids = 255;
1805                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1806                 }
1807
1808                 hw->channel_change_time = 1;
1809                 hw->queues = 4;
1810                 hw->wiphy->interface_modes =
1811                         BIT(NL80211_IFTYPE_STATION) |
1812                         BIT(NL80211_IFTYPE_AP) |
1813                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
1814                         BIT(NL80211_IFTYPE_P2P_GO) |
1815                         BIT(NL80211_IFTYPE_ADHOC) |
1816                         BIT(NL80211_IFTYPE_MESH_POINT);
1817
1818                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1819                             IEEE80211_HW_SIGNAL_DBM |
1820                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1821                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1822                             IEEE80211_HW_AMPDU_AGGREGATION |
1823                             IEEE80211_HW_WANT_MONITOR_VIF;
1824
1825                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
1826                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1827
1828                 /* ask mac80211 to reserve space for magic */
1829                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1830                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1831
1832                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1833                         sizeof(hwsim_channels_2ghz));
1834                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1835                         sizeof(hwsim_channels_5ghz));
1836                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1837
1838                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1839                         struct ieee80211_supported_band *sband = &data->bands[band];
1840                         switch (band) {
1841                         case IEEE80211_BAND_2GHZ:
1842                                 sband->channels = data->channels_2ghz;
1843                                 sband->n_channels =
1844                                         ARRAY_SIZE(hwsim_channels_2ghz);
1845                                 sband->bitrates = data->rates;
1846                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1847                                 break;
1848                         case IEEE80211_BAND_5GHZ:
1849                                 sband->channels = data->channels_5ghz;
1850                                 sband->n_channels =
1851                                         ARRAY_SIZE(hwsim_channels_5ghz);
1852                                 sband->bitrates = data->rates + 4;
1853                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1854                                 break;
1855                         default:
1856                                 continue;
1857                         }
1858
1859                         sband->ht_cap.ht_supported = true;
1860                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1861                                 IEEE80211_HT_CAP_GRN_FLD |
1862                                 IEEE80211_HT_CAP_SGI_40 |
1863                                 IEEE80211_HT_CAP_DSSSCCK40;
1864                         sband->ht_cap.ampdu_factor = 0x3;
1865                         sband->ht_cap.ampdu_density = 0x6;
1866                         memset(&sband->ht_cap.mcs, 0,
1867                                sizeof(sband->ht_cap.mcs));
1868                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
1869                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
1870                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1871
1872                         hw->wiphy->bands[band] = sband;
1873                 }
1874                 /* By default all radios are belonging to the first group */
1875                 data->group = 1;
1876                 mutex_init(&data->mutex);
1877
1878                 /* Enable frame retransmissions for lossy channels */
1879                 hw->max_rates = 4;
1880                 hw->max_rate_tries = 11;
1881
1882                 /* Work to be done prior to ieee80211_register_hw() */
1883                 switch (regtest) {
1884                 case HWSIM_REGTEST_DISABLED:
1885                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1886                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1887                 case HWSIM_REGTEST_DIFF_COUNTRY:
1888                         /*
1889                          * Nothing to be done for driver regulatory domain
1890                          * hints prior to ieee80211_register_hw()
1891                          */
1892                         break;
1893                 case HWSIM_REGTEST_WORLD_ROAM:
1894                         if (i == 0) {
1895                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1896                                 wiphy_apply_custom_regulatory(hw->wiphy,
1897                                         &hwsim_world_regdom_custom_01);
1898                         }
1899                         break;
1900                 case HWSIM_REGTEST_CUSTOM_WORLD:
1901                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1902                         wiphy_apply_custom_regulatory(hw->wiphy,
1903                                 &hwsim_world_regdom_custom_01);
1904                         break;
1905                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1906                         if (i == 0) {
1907                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1908                                 wiphy_apply_custom_regulatory(hw->wiphy,
1909                                         &hwsim_world_regdom_custom_01);
1910                         } else if (i == 1) {
1911                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1912                                 wiphy_apply_custom_regulatory(hw->wiphy,
1913                                         &hwsim_world_regdom_custom_02);
1914                         }
1915                         break;
1916                 case HWSIM_REGTEST_STRICT_ALL:
1917                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1918                         break;
1919                 case HWSIM_REGTEST_STRICT_FOLLOW:
1920                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1921                         if (i == 0)
1922                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1923                         break;
1924                 case HWSIM_REGTEST_ALL:
1925                         if (i == 0) {
1926                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1927                                 wiphy_apply_custom_regulatory(hw->wiphy,
1928                                         &hwsim_world_regdom_custom_01);
1929                         } else if (i == 1) {
1930                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1931                                 wiphy_apply_custom_regulatory(hw->wiphy,
1932                                         &hwsim_world_regdom_custom_02);
1933                         } else if (i == 4)
1934                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1935                         break;
1936                 default:
1937                         break;
1938                 }
1939
1940                 /* give the regulatory workqueue a chance to run */
1941                 if (regtest)
1942                         schedule_timeout_interruptible(1);
1943                 err = ieee80211_register_hw(hw);
1944                 if (err < 0) {
1945                         printk(KERN_DEBUG "mac80211_hwsim: "
1946                                "ieee80211_register_hw failed (%d)\n", err);
1947                         goto failed_hw;
1948                 }
1949
1950                 /* Work to be done after to ieee80211_register_hw() */
1951                 switch (regtest) {
1952                 case HWSIM_REGTEST_WORLD_ROAM:
1953                 case HWSIM_REGTEST_DISABLED:
1954                         break;
1955                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1956                         if (!i)
1957                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1958                         break;
1959                 case HWSIM_REGTEST_DRIVER_REG_ALL:
1960                 case HWSIM_REGTEST_STRICT_ALL:
1961                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1962                         break;
1963                 case HWSIM_REGTEST_DIFF_COUNTRY:
1964                         if (i < ARRAY_SIZE(hwsim_alpha2s))
1965                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1966                         break;
1967                 case HWSIM_REGTEST_CUSTOM_WORLD:
1968                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1969                         /*
1970                          * Nothing to be done for custom world regulatory
1971                          * domains after to ieee80211_register_hw
1972                          */
1973                         break;
1974                 case HWSIM_REGTEST_STRICT_FOLLOW:
1975                         if (i == 0)
1976                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1977                         break;
1978                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1979                         if (i == 0)
1980                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1981                         else if (i == 1)
1982                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1983                         break;
1984                 case HWSIM_REGTEST_ALL:
1985                         if (i == 2)
1986                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1987                         else if (i == 3)
1988                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1989                         else if (i == 4)
1990                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1991                         break;
1992                 default:
1993                         break;
1994                 }
1995
1996                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1997                             hw->wiphy->perm_addr);
1998
1999                 data->debugfs = debugfs_create_dir("hwsim",
2000                                                    hw->wiphy->debugfsdir);
2001                 data->debugfs_ps = debugfs_create_file("ps", 0666,
2002                                                        data->debugfs, data,
2003                                                        &hwsim_fops_ps);
2004                 data->debugfs_group = debugfs_create_file("group", 0666,
2005                                                         data->debugfs, data,
2006                                                         &hwsim_fops_group);
2007
2008                 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
2009                             (unsigned long) hw);
2010
2011                 list_add_tail(&data->list, &hwsim_radios);
2012         }
2013
2014         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2015         if (hwsim_mon == NULL)
2016                 goto failed;
2017
2018         rtnl_lock();
2019
2020         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2021         if (err < 0)
2022                 goto failed_mon;
2023
2024
2025         err = register_netdevice(hwsim_mon);
2026         if (err < 0)
2027                 goto failed_mon;
2028
2029         rtnl_unlock();
2030
2031         err = hwsim_init_netlink();
2032         if (err < 0)
2033                 goto failed_nl;
2034
2035         return 0;
2036
2037 failed_nl:
2038         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2039         return err;
2040
2041 failed_mon:
2042         rtnl_unlock();
2043         free_netdev(hwsim_mon);
2044         mac80211_hwsim_free();
2045         return err;
2046
2047 failed_hw:
2048         device_unregister(data->dev);
2049 failed_drvdata:
2050         ieee80211_free_hw(hw);
2051 failed:
2052         mac80211_hwsim_free();
2053         return err;
2054 }
2055
2056
2057 static void __exit exit_mac80211_hwsim(void)
2058 {
2059         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2060
2061         hwsim_exit_netlink();
2062
2063         mac80211_hwsim_free();
2064         unregister_netdev(hwsim_mon);
2065 }
2066
2067
2068 module_init(init_mac80211_hwsim);
2069 module_exit(exit_mac80211_hwsim);