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