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/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include "mac80211_hwsim.h"
  34
  35 #define WARN_QUEUE 100
  36 #define MAX_QUEUE 200
  37
  38 MODULE_AUTHOR("Jouni Malinen");
  39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  40 MODULE_LICENSE("GPL");
  41
  42 static u32 wmediumd_portid;
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 /**
  61  * enum hwsim_regtest - the type of regulatory tests we offer
  62  *
  63  * These are the different values you can use for the regtest
  64  * module parameter. This is useful to help test world roaming
  65  * and the driver regulatory_hint() call and combinations of these.
  66  * If you want to do specific alpha2 regulatory domain tests simply
  67  * use the userspace regulatory request as that will be respected as
  68  * well without the need of this module parameter. This is designed
  69  * only for testing the driver regulatory request, world roaming
  70  * and all possible combinations.
  71  *
  72  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  73  *      this is the default value.
  74  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  75  *      hint, only one driver regulatory hint will be sent as such the
  76  *      secondary radios are expected to follow.
  77  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  78  *      request with all radios reporting the same regulatory domain.
  79  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  80  *      different regulatory domains requests. Expected behaviour is for
  81  *      an intersection to occur but each device will still use their
  82  *      respective regulatory requested domains. Subsequent radios will
  83  *      use the resulting intersection.
  84  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  85  *      this by using a custom beacon-capable regulatory domain for the first
  86  *      radio. All other device world roam.
  87  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  88  *      domain requests. All radios will adhere to this custom world regulatory
  89  *      domain.
  90  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  91  *      domain requests. The first radio will adhere to the first custom world
  92  *      regulatory domain, the second one to the second custom world regulatory
  93  *      domain. All other devices will world roam.
  94  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  95  *      settings, only the first radio will send a regulatory domain request
  96  *      and use strict settings. The rest of the radios are expected to follow.
  97  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  98  *      settings. All radios will adhere to this.
  99  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 100  *      domain settings, combined with secondary driver regulatory domain
 101  *      settings. The first radio will get a strict regulatory domain setting
 102  *      using the first driver regulatory request and the second radio will use
 103  *      non-strict settings using the second driver regulatory request. All
 104  *      other devices should follow the intersection created between the
 105  *      first two.
 106  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 107  *      at least 6 radios for a complete test. We will test in this order:
 108  *      1 - driver custom world regulatory domain
 109  *      2 - second custom world regulatory domain
 110  *      3 - first driver regulatory domain request
 111  *      4 - second driver regulatory domain request
 112  *      5 - strict regulatory domain settings using the third driver regulatory
 113  *          domain request
 114  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 115  *                 regulatory requests.
 116  */
 117 enum hwsim_regtest {
 118         HWSIM_REGTEST_DISABLED = 0,
 119         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 120         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 121         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 122         HWSIM_REGTEST_WORLD_ROAM = 4,
 123         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 124         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 125         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 126         HWSIM_REGTEST_STRICT_ALL = 8,
 127         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 128         HWSIM_REGTEST_ALL = 10,
 129 };
 130
 131 /* Set to one of the HWSIM_REGTEST_* values above */
 132 static int regtest = HWSIM_REGTEST_DISABLED;
 133 module_param(regtest, int, 0444);
 134 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 135
 136 static const char *hwsim_alpha2s[] = {
 137         "FI",
 138         "AL",
 139         "US",
 140         "DE",
 141         "JP",
 142         "AL",
 143 };
 144
 145 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 146         .n_reg_rules = 4,
 147         .alpha2 =  "99",
 148         .reg_rules = {
 149                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 150                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 151                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 152                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 153         }
 154 };
 155
 156 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 157         .n_reg_rules = 2,
 158         .alpha2 =  "99",
 159         .reg_rules = {
 160                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 161                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 162                          NL80211_RRF_NO_IR),
 163         }
 164 };
 165
 166 struct hwsim_vif_priv {
 167         u32 magic;
 168         u8 bssid[ETH_ALEN];
 169         bool assoc;
 170         bool bcn_en;
 171         u16 aid;
 172 };
 173
 174 #define HWSIM_VIF_MAGIC 0x69537748
 175
 176 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 177 {
 178         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 179         WARN(vp->magic != HWSIM_VIF_MAGIC,
 180              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 181              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 182 }
 183
 184 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 185 {
 186         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 187         vp->magic = HWSIM_VIF_MAGIC;
 188 }
 189
 190 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 191 {
 192         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 193         vp->magic = 0;
 194 }
 195
 196 struct hwsim_sta_priv {
 197         u32 magic;
 198 };
 199
 200 #define HWSIM_STA_MAGIC 0x6d537749
 201
 202 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 203 {
 204         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 205         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 206 }
 207
 208 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 209 {
 210         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 211         sp->magic = HWSIM_STA_MAGIC;
 212 }
 213
 214 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 215 {
 216         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 217         sp->magic = 0;
 218 }
 219
 220 struct hwsim_chanctx_priv {
 221         u32 magic;
 222 };
 223
 224 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 225
 226 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 227 {
 228         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 229         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 230 }
 231
 232 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 233 {
 234         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 235         cp->magic = HWSIM_CHANCTX_MAGIC;
 236 }
 237
 238 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 239 {
 240         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 241         cp->magic = 0;
 242 }
 243
 244 static struct class *hwsim_class;
 245
 246 static struct net_device *hwsim_mon; /* global monitor netdev */
 247
 248 #define CHAN2G(_freq)  { \
 249         .band = IEEE80211_BAND_2GHZ, \
 250         .center_freq = (_freq), \
 251         .hw_value = (_freq), \
 252         .max_power = 20, \
 253 }
 254
 255 #define CHAN5G(_freq) { \
 256         .band = IEEE80211_BAND_5GHZ, \
 257         .center_freq = (_freq), \
 258         .hw_value = (_freq), \
 259         .max_power = 20, \
 260 }
 261
 262 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 263         CHAN2G(2412), /* Channel 1 */
 264         CHAN2G(2417), /* Channel 2 */
 265         CHAN2G(2422), /* Channel 3 */
 266         CHAN2G(2427), /* Channel 4 */
 267         CHAN2G(2432), /* Channel 5 */
 268         CHAN2G(2437), /* Channel 6 */
 269         CHAN2G(2442), /* Channel 7 */
 270         CHAN2G(2447), /* Channel 8 */
 271         CHAN2G(2452), /* Channel 9 */
 272         CHAN2G(2457), /* Channel 10 */
 273         CHAN2G(2462), /* Channel 11 */
 274         CHAN2G(2467), /* Channel 12 */
 275         CHAN2G(2472), /* Channel 13 */
 276         CHAN2G(2484), /* Channel 14 */
 277 };
 278
 279 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 280         CHAN5G(5180), /* Channel 36 */
 281         CHAN5G(5200), /* Channel 40 */
 282         CHAN5G(5220), /* Channel 44 */
 283         CHAN5G(5240), /* Channel 48 */
 284
 285         CHAN5G(5260), /* Channel 52 */
 286         CHAN5G(5280), /* Channel 56 */
 287         CHAN5G(5300), /* Channel 60 */
 288         CHAN5G(5320), /* Channel 64 */
 289
 290         CHAN5G(5500), /* Channel 100 */
 291         CHAN5G(5520), /* Channel 104 */
 292         CHAN5G(5540), /* Channel 108 */
 293         CHAN5G(5560), /* Channel 112 */
 294         CHAN5G(5580), /* Channel 116 */
 295         CHAN5G(5600), /* Channel 120 */
 296         CHAN5G(5620), /* Channel 124 */
 297         CHAN5G(5640), /* Channel 128 */
 298         CHAN5G(5660), /* Channel 132 */
 299         CHAN5G(5680), /* Channel 136 */
 300         CHAN5G(5700), /* Channel 140 */
 301
 302         CHAN5G(5745), /* Channel 149 */
 303         CHAN5G(5765), /* Channel 153 */
 304         CHAN5G(5785), /* Channel 157 */
 305         CHAN5G(5805), /* Channel 161 */
 306         CHAN5G(5825), /* Channel 165 */
 307 };
 308
 309 static const struct ieee80211_rate hwsim_rates[] = {
 310         { .bitrate = 10 },
 311         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 312         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 313         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 314         { .bitrate = 60 },
 315         { .bitrate = 90 },
 316         { .bitrate = 120 },
 317         { .bitrate = 180 },
 318         { .bitrate = 240 },
 319         { .bitrate = 360 },
 320         { .bitrate = 480 },
 321         { .bitrate = 540 }
 322 };
 323
 324 static spinlock_t hwsim_radio_lock;
 325 static struct list_head hwsim_radios;
 326
 327 struct mac80211_hwsim_data {
 328         struct list_head list;
 329         struct ieee80211_hw *hw;
 330         struct device *dev;
 331         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 332         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 333         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 334         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 335
 336         struct mac_address addresses[2];
 337
 338         struct ieee80211_channel *tmp_chan;
 339         struct delayed_work roc_done;
 340         struct delayed_work hw_scan;
 341         struct cfg80211_scan_request *hw_scan_request;
 342         struct ieee80211_vif *hw_scan_vif;
 343         int scan_chan_idx;
 344
 345         struct ieee80211_channel *channel;
 346         u64 beacon_int  /* beacon interval in us */;
 347         unsigned int rx_filter;
 348         bool started, idle, scanning;
 349         struct mutex mutex;
 350         struct tasklet_hrtimer beacon_timer;
 351         enum ps_mode {
 352                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 353         } ps;
 354         bool ps_poll_pending;
 355         struct dentry *debugfs;
 356
 357         struct sk_buff_head pending;    /* packets pending */
 358         /*
 359          * Only radios in the same group can communicate together (the
 360          * channel has to match too). Each bit represents a group. A
 361          * radio can be in more then one group.
 362          */
 363         u64 group;
 364
 365         int power_level;
 366
 367         /* difference between this hw's clock and the real clock, in usecs */
 368         s64 tsf_offset;
 369         s64 bcn_delta;
 370         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 371         u64 abs_bcn_ts;
 372 };
 373
 374
 375 struct hwsim_radiotap_hdr {
 376         struct ieee80211_radiotap_header hdr;
 377         __le64 rt_tsft;
 378         u8 rt_flags;
 379         u8 rt_rate;
 380         __le16 rt_channel;
 381         __le16 rt_chbitmask;
 382 } __packed;
 383
 384 /* MAC80211_HWSIM netlinf family */
 385 static struct genl_family hwsim_genl_family = {
 386         .id = GENL_ID_GENERATE,
 387         .hdrsize = 0,
 388         .name = "MAC80211_HWSIM",
 389         .version = 1,
 390         .maxattr = HWSIM_ATTR_MAX,
 391 };
 392
 393 /* MAC80211_HWSIM netlink policy */
 394
 395 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 396         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 397                                        .len = 6*sizeof(u8) },
 398         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 399                                           .len = 6*sizeof(u8) },
 400         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 401                                .len = IEEE80211_MAX_DATA_LEN },
 402         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 403         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 404         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 405         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 406                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 407                                         struct hwsim_tx_rate)},
 408         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 409 };
 410
 411 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 412                                         struct net_device *dev)
 413 {
 414         /* TODO: allow packet injection */
 415         dev_kfree_skb(skb);
 416         return NETDEV_TX_OK;
 417 }
 418
 419 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 420 {
 421         return ktime_to_us(ktime_get_real());
 422 }
 423
 424 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 425 {
 426         u64 now = mac80211_hwsim_get_tsf_raw();
 427         return cpu_to_le64(now + data->tsf_offset);
 428 }
 429
 430 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 431                                   struct ieee80211_vif *vif)
 432 {
 433         struct mac80211_hwsim_data *data = hw->priv;
 434         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 435 }
 436
 437 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 438                 struct ieee80211_vif *vif, u64 tsf)
 439 {
 440         struct mac80211_hwsim_data *data = hw->priv;
 441         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 442         u32 bcn_int = data->beacon_int;
 443         s64 delta = tsf - now;
 444
 445         data->tsf_offset += delta;
 446         /* adjust after beaconing with new timestamp at old TBTT */
 447         data->bcn_delta = do_div(delta, bcn_int);
 448 }
 449
 450 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 451                                       struct sk_buff *tx_skb,
 452                                       struct ieee80211_channel *chan)
 453 {
 454         struct mac80211_hwsim_data *data = hw->priv;
 455         struct sk_buff *skb;
 456         struct hwsim_radiotap_hdr *hdr;
 457         u16 flags;
 458         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 459         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 460
 461         if (!netif_running(hwsim_mon))
 462                 return;
 463
 464         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 465         if (skb == NULL)
 466                 return;
 467
 468         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 469         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 470         hdr->hdr.it_pad = 0;
 471         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 472         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 473                                           (1 << IEEE80211_RADIOTAP_RATE) |
 474                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 475                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 476         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 477         hdr->rt_flags = 0;
 478         hdr->rt_rate = txrate->bitrate / 5;
 479         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 480         flags = IEEE80211_CHAN_2GHZ;
 481         if (txrate->flags & IEEE80211_RATE_ERP_G)
 482                 flags |= IEEE80211_CHAN_OFDM;
 483         else
 484                 flags |= IEEE80211_CHAN_CCK;
 485         hdr->rt_chbitmask = cpu_to_le16(flags);
 486
 487         skb->dev = hwsim_mon;
 488         skb_set_mac_header(skb, 0);
 489         skb->ip_summed = CHECKSUM_UNNECESSARY;
 490         skb->pkt_type = PACKET_OTHERHOST;
 491         skb->protocol = htons(ETH_P_802_2);
 492         memset(skb->cb, 0, sizeof(skb->cb));
 493         netif_rx(skb);
 494 }
 495
 496
 497 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 498                                        const u8 *addr)
 499 {
 500         struct sk_buff *skb;
 501         struct hwsim_radiotap_hdr *hdr;
 502         u16 flags;
 503         struct ieee80211_hdr *hdr11;
 504
 505         if (!netif_running(hwsim_mon))
 506                 return;
 507
 508         skb = dev_alloc_skb(100);
 509         if (skb == NULL)
 510                 return;
 511
 512         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 513         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 514         hdr->hdr.it_pad = 0;
 515         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 516         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 517                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 518         hdr->rt_flags = 0;
 519         hdr->rt_rate = 0;
 520         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 521         flags = IEEE80211_CHAN_2GHZ;
 522         hdr->rt_chbitmask = cpu_to_le16(flags);
 523
 524         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 525         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 526                                            IEEE80211_STYPE_ACK);
 527         hdr11->duration_id = cpu_to_le16(0);
 528         memcpy(hdr11->addr1, addr, ETH_ALEN);
 529
 530         skb->dev = hwsim_mon;
 531         skb_set_mac_header(skb, 0);
 532         skb->ip_summed = CHECKSUM_UNNECESSARY;
 533         skb->pkt_type = PACKET_OTHERHOST;
 534         skb->protocol = htons(ETH_P_802_2);
 535         memset(skb->cb, 0, sizeof(skb->cb));
 536         netif_rx(skb);
 537 }
 538
 539
 540 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 541                            struct sk_buff *skb)
 542 {
 543         switch (data->ps) {
 544         case PS_DISABLED:
 545                 return true;
 546         case PS_ENABLED:
 547                 return false;
 548         case PS_AUTO_POLL:
 549                 /* TODO: accept (some) Beacons by default and other frames only
 550                  * if pending PS-Poll has been sent */
 551                 return true;
 552         case PS_MANUAL_POLL:
 553                 /* Allow unicast frames to own address if there is a pending
 554                  * PS-Poll */
 555                 if (data->ps_poll_pending &&
 556                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 557                            ETH_ALEN) == 0) {
 558                         data->ps_poll_pending = false;
 559                         return true;
 560                 }
 561                 return false;
 562         }
 563
 564         return true;
 565 }
 566
 567
 568 struct mac80211_hwsim_addr_match_data {
 569         bool ret;
 570         const u8 *addr;
 571 };
 572
 573 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 574                                      struct ieee80211_vif *vif)
 575 {
 576         struct mac80211_hwsim_addr_match_data *md = data;
 577         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 578                 md->ret = true;
 579 }
 580
 581
 582 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 583                                       const u8 *addr)
 584 {
 585         struct mac80211_hwsim_addr_match_data md;
 586
 587         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 588                 return true;
 589
 590         md.ret = false;
 591         md.addr = addr;
 592         ieee80211_iterate_active_interfaces_atomic(data->hw,
 593                                                    IEEE80211_IFACE_ITER_NORMAL,
 594                                                    mac80211_hwsim_addr_iter,
 595                                                    &md);
 596
 597         return md.ret;
 598 }
 599
 600 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 601                                        struct sk_buff *my_skb,
 602                                        int dst_portid)
 603 {
 604         struct sk_buff *skb;
 605         struct mac80211_hwsim_data *data = hw->priv;
 606         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 607         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 608         void *msg_head;
 609         unsigned int hwsim_flags = 0;
 610         int i;
 611         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 612
 613         if (data->ps != PS_DISABLED)
 614                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 615         /* If the queue contains MAX_QUEUE skb's drop some */
 616         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 617                 /* Droping until WARN_QUEUE level */
 618                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 619                         skb_dequeue(&data->pending);
 620         }
 621
 622         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 623         if (skb == NULL)
 624                 goto nla_put_failure;
 625
 626         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 627                                HWSIM_CMD_FRAME);
 628         if (msg_head == NULL) {
 629                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 630                 goto nla_put_failure;
 631         }
 632
 633         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 634                     sizeof(struct mac_address), data->addresses[1].addr))
 635                 goto nla_put_failure;
 636
 637         /* We get the skb->data */
 638         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 639                 goto nla_put_failure;
 640
 641         /* We get the flags for this transmission, and we translate them to
 642            wmediumd flags  */
 643
 644         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 645                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 646
 647         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 648                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 649
 650         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 651                 goto nla_put_failure;
 652
 653         /* We get the tx control (rate and retries) info*/
 654
 655         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 656                 tx_attempts[i].idx = info->status.rates[i].idx;
 657                 tx_attempts[i].count = info->status.rates[i].count;
 658         }
 659
 660         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 661                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 662                     tx_attempts))
 663                 goto nla_put_failure;
 664
 665         /* We create a cookie to identify this skb */
 666         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 667                 goto nla_put_failure;
 668
 669         genlmsg_end(skb, msg_head);
 670         genlmsg_unicast(&init_net, skb, dst_portid);
 671
 672         /* Enqueue the packet */
 673         skb_queue_tail(&data->pending, my_skb);
 674         return;
 675
 676 nla_put_failure:
 677         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 678 }
 679
 680 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 681                                struct ieee80211_channel *c2)
 682 {
 683         if (!c1 || !c2)
 684                 return false;
 685
 686         return c1->center_freq == c2->center_freq;
 687 }
 688
 689 struct tx_iter_data {
 690         struct ieee80211_channel *channel;
 691         bool receive;
 692 };
 693
 694 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 695                                    struct ieee80211_vif *vif)
 696 {
 697         struct tx_iter_data *data = _data;
 698
 699         if (!vif->chanctx_conf)
 700                 return;
 701
 702         if (!hwsim_chans_compat(data->channel,
 703                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 704                 return;
 705
 706         data->receive = true;
 707 }
 708
 709 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 710                                           struct sk_buff *skb,
 711                                           struct ieee80211_channel *chan)
 712 {
 713         struct mac80211_hwsim_data *data = hw->priv, *data2;
 714         bool ack = false;
 715         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 716         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 717         struct ieee80211_rx_status rx_status;
 718         u64 now;
 719
 720         memset(&rx_status, 0, sizeof(rx_status));
 721         rx_status.flag |= RX_FLAG_MACTIME_START;
 722         rx_status.freq = chan->center_freq;
 723         rx_status.band = chan->band;
 724         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 725                 rx_status.rate_idx =
 726                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
 727                 rx_status.vht_nss =
 728                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
 729                 rx_status.flag |= RX_FLAG_VHT;
 730         } else {
 731                 rx_status.rate_idx = info->control.rates[0].idx;
 732                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 733                         rx_status.flag |= RX_FLAG_HT;
 734         }
 735         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 736                 rx_status.flag |= RX_FLAG_40MHZ;
 737         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 738                 rx_status.flag |= RX_FLAG_SHORT_GI;
 739         /* TODO: simulate real signal strength (and optional packet loss) */
 740         rx_status.signal = data->power_level - 50;
 741
 742         if (data->ps != PS_DISABLED)
 743                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 744
 745         /* release the skb's source info */
 746         skb_orphan(skb);
 747         skb_dst_drop(skb);
 748         skb->mark = 0;
 749         secpath_reset(skb);
 750         nf_reset(skb);
 751
 752         /*
 753          * Get absolute mactime here so all HWs RX at the "same time", and
 754          * absolute TX time for beacon mactime so the timestamp matches.
 755          * Giving beacons a different mactime than non-beacons looks messy, but
 756          * it helps the Toffset be exact and a ~10us mactime discrepancy
 757          * probably doesn't really matter.
 758          */
 759         if (ieee80211_is_beacon(hdr->frame_control) ||
 760             ieee80211_is_probe_resp(hdr->frame_control))
 761                 now = data->abs_bcn_ts;
 762         else
 763                 now = mac80211_hwsim_get_tsf_raw();
 764
 765         /* Copy skb to all enabled radios that are on the current frequency */
 766         spin_lock(&hwsim_radio_lock);
 767         list_for_each_entry(data2, &hwsim_radios, list) {
 768                 struct sk_buff *nskb;
 769                 struct tx_iter_data tx_iter_data = {
 770                         .receive = false,
 771                         .channel = chan,
 772                 };
 773
 774                 if (data == data2)
 775                         continue;
 776
 777                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 778                     !hwsim_ps_rx_ok(data2, skb))
 779                         continue;
 780
 781                 if (!(data->group & data2->group))
 782                         continue;
 783
 784                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 785                     !hwsim_chans_compat(chan, data2->channel)) {
 786                         ieee80211_iterate_active_interfaces_atomic(
 787                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 788                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 789                         if (!tx_iter_data.receive)
 790                                 continue;
 791                 }
 792
 793                 /*
 794                  * reserve some space for our vendor and the normal
 795                  * radiotap header, since we're copying anyway
 796                  */
 797                 if (skb->len < PAGE_SIZE && paged_rx) {
 798                         struct page *page = alloc_page(GFP_ATOMIC);
 799
 800                         if (!page)
 801                                 continue;
 802
 803                         nskb = dev_alloc_skb(128);
 804                         if (!nskb) {
 805                                 __free_page(page);
 806                                 continue;
 807                         }
 808
 809                         memcpy(page_address(page), skb->data, skb->len);
 810                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 811                 } else {
 812                         nskb = skb_copy(skb, GFP_ATOMIC);
 813                         if (!nskb)
 814                                 continue;
 815                 }
 816
 817                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 818                         ack = true;
 819
 820                 rx_status.mactime = now + data2->tsf_offset;
 821 #if 0
 822                 /*
 823                  * Don't enable this code by default as the OUI 00:00:00
 824                  * is registered to Xerox so we shouldn't use it here, it
 825                  * might find its way into pcap files.
 826                  * Note that this code requires the headroom in the SKB
 827                  * that was allocated earlier.
 828                  */
 829                 rx_status.vendor_radiotap_oui[0] = 0x00;
 830                 rx_status.vendor_radiotap_oui[1] = 0x00;
 831                 rx_status.vendor_radiotap_oui[2] = 0x00;
 832                 rx_status.vendor_radiotap_subns = 127;
 833                 /*
 834                  * Radiotap vendor namespaces can (and should) also be
 835                  * split into fields by using the standard radiotap
 836                  * presence bitmap mechanism. Use just BIT(0) here for
 837                  * the presence bitmap.
 838                  */
 839                 rx_status.vendor_radiotap_bitmap = BIT(0);
 840                 /* We have 8 bytes of (dummy) data */
 841                 rx_status.vendor_radiotap_len = 8;
 842                 /* For testing, also require it to be aligned */
 843                 rx_status.vendor_radiotap_align = 8;
 844                 /* push the data */
 845                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 846 #endif
 847
 848                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 849                 ieee80211_rx_irqsafe(data2->hw, nskb);
 850         }
 851         spin_unlock(&hwsim_radio_lock);
 852
 853         return ack;
 854 }
 855
 856 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 857                               struct ieee80211_tx_control *control,
 858                               struct sk_buff *skb)
 859 {
 860         struct mac80211_hwsim_data *data = hw->priv;
 861         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 862         struct ieee80211_chanctx_conf *chanctx_conf;
 863         struct ieee80211_channel *channel;
 864         bool ack;
 865         u32 _portid;
 866
 867         if (WARN_ON(skb->len < 10)) {
 868                 /* Should not happen; just a sanity check for addr1 use */
 869                 ieee80211_free_txskb(hw, skb);
 870                 return;
 871         }
 872
 873         if (channels == 1) {
 874                 channel = data->channel;
 875         } else if (txi->hw_queue == 4) {
 876                 channel = data->tmp_chan;
 877         } else {
 878                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 879                 if (chanctx_conf)
 880                         channel = chanctx_conf->def.chan;
 881                 else
 882                         channel = NULL;
 883         }
 884
 885         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 886                 ieee80211_free_txskb(hw, skb);
 887                 return;
 888         }
 889
 890         if (data->idle && !data->tmp_chan) {
 891                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 892                 ieee80211_free_txskb(hw, skb);
 893                 return;
 894         }
 895
 896         if (txi->control.vif)
 897                 hwsim_check_magic(txi->control.vif);
 898         if (control->sta)
 899                 hwsim_check_sta_magic(control->sta);
 900
 901         if (rctbl)
 902                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
 903                                        txi->control.rates,
 904                                        ARRAY_SIZE(txi->control.rates));
 905
 906         txi->rate_driver_data[0] = channel;
 907         mac80211_hwsim_monitor_rx(hw, skb, channel);
 908
 909         /* wmediumd mode check */
 910         _portid = ACCESS_ONCE(wmediumd_portid);
 911
 912         if (_portid)
 913                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 914
 915         /* NO wmediumd detected, perfect medium simulation */
 916         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 917
 918         if (ack && skb->len >= 16) {
 919                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 920                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 921         }
 922
 923         ieee80211_tx_info_clear_status(txi);
 924
 925         /* frame was transmitted at most favorable rate at first attempt */
 926         txi->control.rates[0].count = 1;
 927         txi->control.rates[1].idx = -1;
 928
 929         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 930                 txi->flags |= IEEE80211_TX_STAT_ACK;
 931         ieee80211_tx_status_irqsafe(hw, skb);
 932 }
 933
 934
 935 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 936 {
 937         struct mac80211_hwsim_data *data = hw->priv;
 938         wiphy_debug(hw->wiphy, "%s\n", __func__);
 939         data->started = true;
 940         return 0;
 941 }
 942
 943
 944 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 945 {
 946         struct mac80211_hwsim_data *data = hw->priv;
 947         data->started = false;
 948         tasklet_hrtimer_cancel(&data->beacon_timer);
 949         wiphy_debug(hw->wiphy, "%s\n", __func__);
 950 }
 951
 952
 953 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 954                                         struct ieee80211_vif *vif)
 955 {
 956         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 957                     __func__, ieee80211_vif_type_p2p(vif),
 958                     vif->addr);
 959         hwsim_set_magic(vif);
 960
 961         vif->cab_queue = 0;
 962         vif->hw_queue[IEEE80211_AC_VO] = 0;
 963         vif->hw_queue[IEEE80211_AC_VI] = 1;
 964         vif->hw_queue[IEEE80211_AC_BE] = 2;
 965         vif->hw_queue[IEEE80211_AC_BK] = 3;
 966
 967         return 0;
 968 }
 969
 970
 971 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 972                                            struct ieee80211_vif *vif,
 973                                            enum nl80211_iftype newtype,
 974                                            bool newp2p)
 975 {
 976         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 977         wiphy_debug(hw->wiphy,
 978                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 979                     __func__, ieee80211_vif_type_p2p(vif),
 980                     newtype, vif->addr);
 981         hwsim_check_magic(vif);
 982
 983         /*
 984          * interface may change from non-AP to AP in
 985          * which case this needs to be set up again
 986          */
 987         vif->cab_queue = 0;
 988
 989         return 0;
 990 }
 991
 992 static void mac80211_hwsim_remove_interface(
 993         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 994 {
 995         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 996                     __func__, ieee80211_vif_type_p2p(vif),
 997                     vif->addr);
 998         hwsim_check_magic(vif);
 999         hwsim_clear_magic(vif);
1000 }
1001
1002 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1003                                     struct sk_buff *skb,
1004                                     struct ieee80211_channel *chan)
1005 {
1006         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1007
1008         if (rctbl) {
1009                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1010                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1011                                        txi->control.rates,
1012                                        ARRAY_SIZE(txi->control.rates));
1013         }
1014
1015         mac80211_hwsim_monitor_rx(hw, skb, chan);
1016
1017         if (_pid)
1018                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1019
1020         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1021         dev_kfree_skb(skb);
1022 }
1023
1024 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1025                                      struct ieee80211_vif *vif)
1026 {
1027         struct mac80211_hwsim_data *data = arg;
1028         struct ieee80211_hw *hw = data->hw;
1029         struct ieee80211_tx_info *info;
1030         struct ieee80211_rate *txrate;
1031         struct ieee80211_mgmt *mgmt;
1032         struct sk_buff *skb;
1033
1034         hwsim_check_magic(vif);
1035
1036         if (vif->type != NL80211_IFTYPE_AP &&
1037             vif->type != NL80211_IFTYPE_MESH_POINT &&
1038             vif->type != NL80211_IFTYPE_ADHOC)
1039                 return;
1040
1041         skb = ieee80211_beacon_get(hw, vif);
1042         if (skb == NULL)
1043                 return;
1044         info = IEEE80211_SKB_CB(skb);
1045         if (rctbl)
1046                 ieee80211_get_tx_rates(vif, NULL, skb,
1047                                        info->control.rates,
1048                                        ARRAY_SIZE(info->control.rates));
1049
1050         txrate = ieee80211_get_tx_rate(hw, info);
1051
1052         mgmt = (struct ieee80211_mgmt *) skb->data;
1053         /* fake header transmission time */
1054         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1055         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1056                                                data->tsf_offset +
1057                                                24 * 8 * 10 / txrate->bitrate);
1058
1059         mac80211_hwsim_tx_frame(hw, skb,
1060                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1061 }
1062
1063 static enum hrtimer_restart
1064 mac80211_hwsim_beacon(struct hrtimer *timer)
1065 {
1066         struct mac80211_hwsim_data *data =
1067                 container_of(timer, struct mac80211_hwsim_data,
1068                              beacon_timer.timer);
1069         struct ieee80211_hw *hw = data->hw;
1070         u64 bcn_int = data->beacon_int;
1071         ktime_t next_bcn;
1072
1073         if (!data->started)
1074                 goto out;
1075
1076         ieee80211_iterate_active_interfaces_atomic(
1077                 hw, IEEE80211_IFACE_ITER_NORMAL,
1078                 mac80211_hwsim_beacon_tx, data);
1079
1080         /* beacon at new TBTT + beacon interval */
1081         if (data->bcn_delta) {
1082                 bcn_int -= data->bcn_delta;
1083                 data->bcn_delta = 0;
1084         }
1085
1086         next_bcn = ktime_add(hrtimer_get_expires(timer),
1087                              ns_to_ktime(bcn_int * 1000));
1088         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1089 out:
1090         return HRTIMER_NORESTART;
1091 }
1092
1093 static const char * const hwsim_chanwidths[] = {
1094         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1095         [NL80211_CHAN_WIDTH_20] = "ht20",
1096         [NL80211_CHAN_WIDTH_40] = "ht40",
1097         [NL80211_CHAN_WIDTH_80] = "vht80",
1098         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1099         [NL80211_CHAN_WIDTH_160] = "vht160",
1100 };
1101
1102 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1103 {
1104         struct mac80211_hwsim_data *data = hw->priv;
1105         struct ieee80211_conf *conf = &hw->conf;
1106         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1107                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1108                 [IEEE80211_SMPS_OFF] = "off",
1109                 [IEEE80211_SMPS_STATIC] = "static",
1110                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1111         };
1112
1113         if (conf->chandef.chan)
1114                 wiphy_debug(hw->wiphy,
1115                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1116                             __func__,
1117                             conf->chandef.chan->center_freq,
1118                             conf->chandef.center_freq1,
1119                             conf->chandef.center_freq2,
1120                             hwsim_chanwidths[conf->chandef.width],
1121                             !!(conf->flags & IEEE80211_CONF_IDLE),
1122                             !!(conf->flags & IEEE80211_CONF_PS),
1123                             smps_modes[conf->smps_mode]);
1124         else
1125                 wiphy_debug(hw->wiphy,
1126                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1127                             __func__,
1128                             !!(conf->flags & IEEE80211_CONF_IDLE),
1129                             !!(conf->flags & IEEE80211_CONF_PS),
1130                             smps_modes[conf->smps_mode]);
1131
1132         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1133
1134         data->channel = conf->chandef.chan;
1135
1136         WARN_ON(data->channel && channels > 1);
1137
1138         data->power_level = conf->power_level;
1139         if (!data->started || !data->beacon_int)
1140                 tasklet_hrtimer_cancel(&data->beacon_timer);
1141         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1142                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1143                 u32 bcn_int = data->beacon_int;
1144                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1145
1146                 tasklet_hrtimer_start(&data->beacon_timer,
1147                                       ns_to_ktime(until_tbtt * 1000),
1148                                       HRTIMER_MODE_REL);
1149         }
1150
1151         return 0;
1152 }
1153
1154
1155 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1156                                             unsigned int changed_flags,
1157                                             unsigned int *total_flags,u64 multicast)
1158 {
1159         struct mac80211_hwsim_data *data = hw->priv;
1160
1161         wiphy_debug(hw->wiphy, "%s\n", __func__);
1162
1163         data->rx_filter = 0;
1164         if (*total_flags & FIF_PROMISC_IN_BSS)
1165                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1166         if (*total_flags & FIF_ALLMULTI)
1167                 data->rx_filter |= FIF_ALLMULTI;
1168
1169         *total_flags = data->rx_filter;
1170 }
1171
1172 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1173                                        struct ieee80211_vif *vif)
1174 {
1175         unsigned int *count = data;
1176         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1177
1178         if (vp->bcn_en)
1179                 (*count)++;
1180 }
1181
1182 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1183                                             struct ieee80211_vif *vif,
1184                                             struct ieee80211_bss_conf *info,
1185                                             u32 changed)
1186 {
1187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1188         struct mac80211_hwsim_data *data = hw->priv;
1189
1190         hwsim_check_magic(vif);
1191
1192         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1193                     __func__, changed, vif->addr);
1194
1195         if (changed & BSS_CHANGED_BSSID) {
1196                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1197                             __func__, info->bssid);
1198                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1199         }
1200
1201         if (changed & BSS_CHANGED_ASSOC) {
1202                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1203                             info->assoc, info->aid);
1204                 vp->assoc = info->assoc;
1205                 vp->aid = info->aid;
1206         }
1207
1208         if (changed & BSS_CHANGED_BEACON_INT) {
1209                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1210                 data->beacon_int = info->beacon_int * 1024;
1211         }
1212
1213         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1214                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1215                 vp->bcn_en = info->enable_beacon;
1216                 if (data->started &&
1217                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1218                     info->enable_beacon) {
1219                         u64 tsf, until_tbtt;
1220                         u32 bcn_int;
1221                         if (WARN_ON(!data->beacon_int))
1222                                 data->beacon_int = 1000 * 1024;
1223                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1224                         bcn_int = data->beacon_int;
1225                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1226                         tasklet_hrtimer_start(&data->beacon_timer,
1227                                               ns_to_ktime(until_tbtt * 1000),
1228                                               HRTIMER_MODE_REL);
1229                 } else if (!info->enable_beacon) {
1230                         unsigned int count = 0;
1231                         ieee80211_iterate_active_interfaces(
1232                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1233                                 mac80211_hwsim_bcn_en_iter, &count);
1234                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1235                                     count);
1236                         if (count == 0)
1237                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1238                 }
1239         }
1240
1241         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1242                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1243                             info->use_cts_prot);
1244         }
1245
1246         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1247                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1248                             info->use_short_preamble);
1249         }
1250
1251         if (changed & BSS_CHANGED_ERP_SLOT) {
1252                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1253         }
1254
1255         if (changed & BSS_CHANGED_HT) {
1256                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1257                             info->ht_operation_mode);
1258         }
1259
1260         if (changed & BSS_CHANGED_BASIC_RATES) {
1261                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1262                             (unsigned long long) info->basic_rates);
1263         }
1264
1265         if (changed & BSS_CHANGED_TXPOWER)
1266                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1267 }
1268
1269 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1270                                   struct ieee80211_vif *vif,
1271                                   struct ieee80211_sta *sta)
1272 {
1273         hwsim_check_magic(vif);
1274         hwsim_set_sta_magic(sta);
1275
1276         return 0;
1277 }
1278
1279 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1280                                      struct ieee80211_vif *vif,
1281                                      struct ieee80211_sta *sta)
1282 {
1283         hwsim_check_magic(vif);
1284         hwsim_clear_sta_magic(sta);
1285
1286         return 0;
1287 }
1288
1289 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1290                                       struct ieee80211_vif *vif,
1291                                       enum sta_notify_cmd cmd,
1292                                       struct ieee80211_sta *sta)
1293 {
1294         hwsim_check_magic(vif);
1295
1296         switch (cmd) {
1297         case STA_NOTIFY_SLEEP:
1298         case STA_NOTIFY_AWAKE:
1299                 /* TODO: make good use of these flags */
1300                 break;
1301         default:
1302                 WARN(1, "Invalid sta notify: %d\n", cmd);
1303                 break;
1304         }
1305 }
1306
1307 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1308                                   struct ieee80211_sta *sta,
1309                                   bool set)
1310 {
1311         hwsim_check_sta_magic(sta);
1312         return 0;
1313 }
1314
1315 static int mac80211_hwsim_conf_tx(
1316         struct ieee80211_hw *hw,
1317         struct ieee80211_vif *vif, u16 queue,
1318         const struct ieee80211_tx_queue_params *params)
1319 {
1320         wiphy_debug(hw->wiphy,
1321                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1322                     __func__, queue,
1323                     params->txop, params->cw_min,
1324                     params->cw_max, params->aifs);
1325         return 0;
1326 }
1327
1328 static int mac80211_hwsim_get_survey(
1329         struct ieee80211_hw *hw, int idx,
1330         struct survey_info *survey)
1331 {
1332         struct ieee80211_conf *conf = &hw->conf;
1333
1334         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1335
1336         if (idx != 0)
1337                 return -ENOENT;
1338
1339         /* Current channel */
1340         survey->channel = conf->chandef.chan;
1341
1342         /*
1343          * Magically conjured noise level --- this is only ok for simulated hardware.
1344          *
1345          * A real driver which cannot determine the real channel noise MUST NOT
1346          * report any noise, especially not a magically conjured one :-)
1347          */
1348         survey->filled = SURVEY_INFO_NOISE_DBM;
1349         survey->noise = -92;
1350
1351         return 0;
1352 }
1353
1354 #ifdef CONFIG_NL80211_TESTMODE
1355 /*
1356  * This section contains example code for using netlink
1357  * attributes with the testmode command in nl80211.
1358  */
1359
1360 /* These enums need to be kept in sync with userspace */
1361 enum hwsim_testmode_attr {
1362         __HWSIM_TM_ATTR_INVALID = 0,
1363         HWSIM_TM_ATTR_CMD       = 1,
1364         HWSIM_TM_ATTR_PS        = 2,
1365
1366         /* keep last */
1367         __HWSIM_TM_ATTR_AFTER_LAST,
1368         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1369 };
1370
1371 enum hwsim_testmode_cmd {
1372         HWSIM_TM_CMD_SET_PS             = 0,
1373         HWSIM_TM_CMD_GET_PS             = 1,
1374         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1375         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1376 };
1377
1378 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1379         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1380         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1381 };
1382
1383 static int hwsim_fops_ps_write(void *dat, u64 val);
1384
1385 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1386                                        struct ieee80211_vif *vif,
1387                                        void *data, int len)
1388 {
1389         struct mac80211_hwsim_data *hwsim = hw->priv;
1390         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1391         struct sk_buff *skb;
1392         int err, ps;
1393
1394         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1395                         hwsim_testmode_policy);
1396         if (err)
1397                 return err;
1398
1399         if (!tb[HWSIM_TM_ATTR_CMD])
1400                 return -EINVAL;
1401
1402         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1403         case HWSIM_TM_CMD_SET_PS:
1404                 if (!tb[HWSIM_TM_ATTR_PS])
1405                         return -EINVAL;
1406                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1407                 return hwsim_fops_ps_write(hwsim, ps);
1408         case HWSIM_TM_CMD_GET_PS:
1409                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1410                                                 nla_total_size(sizeof(u32)));
1411                 if (!skb)
1412                         return -ENOMEM;
1413                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1414                         goto nla_put_failure;
1415                 return cfg80211_testmode_reply(skb);
1416         case HWSIM_TM_CMD_STOP_QUEUES:
1417                 ieee80211_stop_queues(hw);
1418                 return 0;
1419         case HWSIM_TM_CMD_WAKE_QUEUES:
1420                 ieee80211_wake_queues(hw);
1421                 return 0;
1422         default:
1423                 return -EOPNOTSUPP;
1424         }
1425
1426  nla_put_failure:
1427         kfree_skb(skb);
1428         return -ENOBUFS;
1429 }
1430 #endif
1431
1432 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1433                                        struct ieee80211_vif *vif,
1434                                        enum ieee80211_ampdu_mlme_action action,
1435                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1436                                        u8 buf_size)
1437 {
1438         switch (action) {
1439         case IEEE80211_AMPDU_TX_START:
1440                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1441                 break;
1442         case IEEE80211_AMPDU_TX_STOP_CONT:
1443         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1444         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1445                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1446                 break;
1447         case IEEE80211_AMPDU_TX_OPERATIONAL:
1448                 break;
1449         case IEEE80211_AMPDU_RX_START:
1450         case IEEE80211_AMPDU_RX_STOP:
1451                 break;
1452         default:
1453                 return -EOPNOTSUPP;
1454         }
1455
1456         return 0;
1457 }
1458
1459 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1460 {
1461         /* Not implemented, queues only on kernel side */
1462 }
1463
1464 static void hw_scan_work(struct work_struct *work)
1465 {
1466         struct mac80211_hwsim_data *hwsim =
1467                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1468         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1469         int dwell, i;
1470
1471         mutex_lock(&hwsim->mutex);
1472         if (hwsim->scan_chan_idx >= req->n_channels) {
1473                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1474                 ieee80211_scan_completed(hwsim->hw, false);
1475                 hwsim->hw_scan_request = NULL;
1476                 hwsim->hw_scan_vif = NULL;
1477                 hwsim->tmp_chan = NULL;
1478                 mutex_unlock(&hwsim->mutex);
1479                 return;
1480         }
1481
1482         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1483                     req->channels[hwsim->scan_chan_idx]->center_freq);
1484
1485         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1486         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1487             !req->n_ssids) {
1488                 dwell = 120;
1489         } else {
1490                 dwell = 30;
1491                 /* send probes */
1492                 for (i = 0; i < req->n_ssids; i++) {
1493                         struct sk_buff *probe;
1494
1495                         probe = ieee80211_probereq_get(hwsim->hw,
1496                                                        hwsim->hw_scan_vif,
1497                                                        req->ssids[i].ssid,
1498                                                        req->ssids[i].ssid_len,
1499                                                        req->ie_len);
1500                         if (!probe)
1501                                 continue;
1502
1503                         if (req->ie_len)
1504                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1505                                        req->ie_len);
1506
1507                         local_bh_disable();
1508                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1509                                                 hwsim->tmp_chan);
1510                         local_bh_enable();
1511                 }
1512         }
1513         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1514                                      msecs_to_jiffies(dwell));
1515         hwsim->scan_chan_idx++;
1516         mutex_unlock(&hwsim->mutex);
1517 }
1518
1519 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1520                                   struct ieee80211_vif *vif,
1521                                   struct cfg80211_scan_request *req)
1522 {
1523         struct mac80211_hwsim_data *hwsim = hw->priv;
1524
1525         mutex_lock(&hwsim->mutex);
1526         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1527                 mutex_unlock(&hwsim->mutex);
1528                 return -EBUSY;
1529         }
1530         hwsim->hw_scan_request = req;
1531         hwsim->hw_scan_vif = vif;
1532         hwsim->scan_chan_idx = 0;
1533         mutex_unlock(&hwsim->mutex);
1534
1535         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1536
1537         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1538
1539         return 0;
1540 }
1541
1542 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1543                                           struct ieee80211_vif *vif)
1544 {
1545         struct mac80211_hwsim_data *hwsim = hw->priv;
1546
1547         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1548
1549         cancel_delayed_work_sync(&hwsim->hw_scan);
1550
1551         mutex_lock(&hwsim->mutex);
1552         ieee80211_scan_completed(hwsim->hw, true);
1553         hwsim->tmp_chan = NULL;
1554         hwsim->hw_scan_request = NULL;
1555         hwsim->hw_scan_vif = NULL;
1556         mutex_unlock(&hwsim->mutex);
1557 }
1558
1559 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1560 {
1561         struct mac80211_hwsim_data *hwsim = hw->priv;
1562
1563         mutex_lock(&hwsim->mutex);
1564
1565         if (hwsim->scanning) {
1566                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1567                 goto out;
1568         }
1569
1570         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1571         hwsim->scanning = true;
1572
1573 out:
1574         mutex_unlock(&hwsim->mutex);
1575 }
1576
1577 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1578 {
1579         struct mac80211_hwsim_data *hwsim = hw->priv;
1580
1581         mutex_lock(&hwsim->mutex);
1582
1583         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1584         hwsim->scanning = false;
1585
1586         mutex_unlock(&hwsim->mutex);
1587 }
1588
1589 static void hw_roc_done(struct work_struct *work)
1590 {
1591         struct mac80211_hwsim_data *hwsim =
1592                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1593
1594         mutex_lock(&hwsim->mutex);
1595         ieee80211_remain_on_channel_expired(hwsim->hw);
1596         hwsim->tmp_chan = NULL;
1597         mutex_unlock(&hwsim->mutex);
1598
1599         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1600 }
1601
1602 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1603                               struct ieee80211_vif *vif,
1604                               struct ieee80211_channel *chan,
1605                               int duration,
1606                               enum ieee80211_roc_type type)
1607 {
1608         struct mac80211_hwsim_data *hwsim = hw->priv;
1609
1610         mutex_lock(&hwsim->mutex);
1611         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1612                 mutex_unlock(&hwsim->mutex);
1613                 return -EBUSY;
1614         }
1615
1616         hwsim->tmp_chan = chan;
1617         mutex_unlock(&hwsim->mutex);
1618
1619         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1620                     chan->center_freq, duration);
1621
1622         ieee80211_ready_on_channel(hw);
1623
1624         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1625                                      msecs_to_jiffies(duration));
1626         return 0;
1627 }
1628
1629 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1630 {
1631         struct mac80211_hwsim_data *hwsim = hw->priv;
1632
1633         cancel_delayed_work_sync(&hwsim->roc_done);
1634
1635         mutex_lock(&hwsim->mutex);
1636         hwsim->tmp_chan = NULL;
1637         mutex_unlock(&hwsim->mutex);
1638
1639         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1640
1641         return 0;
1642 }
1643
1644 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1645                                       struct ieee80211_chanctx_conf *ctx)
1646 {
1647         hwsim_set_chanctx_magic(ctx);
1648         wiphy_debug(hw->wiphy,
1649                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1650                     ctx->def.chan->center_freq, ctx->def.width,
1651                     ctx->def.center_freq1, ctx->def.center_freq2);
1652         return 0;
1653 }
1654
1655 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1656                                           struct ieee80211_chanctx_conf *ctx)
1657 {
1658         wiphy_debug(hw->wiphy,
1659                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1660                     ctx->def.chan->center_freq, ctx->def.width,
1661                     ctx->def.center_freq1, ctx->def.center_freq2);
1662         hwsim_check_chanctx_magic(ctx);
1663         hwsim_clear_chanctx_magic(ctx);
1664 }
1665
1666 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1667                                           struct ieee80211_chanctx_conf *ctx,
1668                                           u32 changed)
1669 {
1670         hwsim_check_chanctx_magic(ctx);
1671         wiphy_debug(hw->wiphy,
1672                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1673                     ctx->def.chan->center_freq, ctx->def.width,
1674                     ctx->def.center_freq1, ctx->def.center_freq2);
1675 }
1676
1677 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1678                                              struct ieee80211_vif *vif,
1679                                              struct ieee80211_chanctx_conf *ctx)
1680 {
1681         hwsim_check_magic(vif);
1682         hwsim_check_chanctx_magic(ctx);
1683
1684         return 0;
1685 }
1686
1687 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1688                                                 struct ieee80211_vif *vif,
1689                                                 struct ieee80211_chanctx_conf *ctx)
1690 {
1691         hwsim_check_magic(vif);
1692         hwsim_check_chanctx_magic(ctx);
1693 }
1694
1695 static struct ieee80211_ops mac80211_hwsim_ops =
1696 {
1697         .tx = mac80211_hwsim_tx,
1698         .start = mac80211_hwsim_start,
1699         .stop = mac80211_hwsim_stop,
1700         .add_interface = mac80211_hwsim_add_interface,
1701         .change_interface = mac80211_hwsim_change_interface,
1702         .remove_interface = mac80211_hwsim_remove_interface,
1703         .config = mac80211_hwsim_config,
1704         .configure_filter = mac80211_hwsim_configure_filter,
1705         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1706         .sta_add = mac80211_hwsim_sta_add,
1707         .sta_remove = mac80211_hwsim_sta_remove,
1708         .sta_notify = mac80211_hwsim_sta_notify,
1709         .set_tim = mac80211_hwsim_set_tim,
1710         .conf_tx = mac80211_hwsim_conf_tx,
1711         .get_survey = mac80211_hwsim_get_survey,
1712         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1713         .ampdu_action = mac80211_hwsim_ampdu_action,
1714         .sw_scan_start = mac80211_hwsim_sw_scan,
1715         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1716         .flush = mac80211_hwsim_flush,
1717         .get_tsf = mac80211_hwsim_get_tsf,
1718         .set_tsf = mac80211_hwsim_set_tsf,
1719 };
1720
1721
1722 static void mac80211_hwsim_free(void)
1723 {
1724         struct list_head tmplist, *i, *tmp;
1725         struct mac80211_hwsim_data *data, *tmpdata;
1726
1727         INIT_LIST_HEAD(&tmplist);
1728
1729         spin_lock_bh(&hwsim_radio_lock);
1730         list_for_each_safe(i, tmp, &hwsim_radios)
1731                 list_move(i, &tmplist);
1732         spin_unlock_bh(&hwsim_radio_lock);
1733
1734         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1735                 debugfs_remove_recursive(data->debugfs);
1736                 ieee80211_unregister_hw(data->hw);
1737                 device_release_driver(data->dev);
1738                 device_unregister(data->dev);
1739                 ieee80211_free_hw(data->hw);
1740         }
1741         class_destroy(hwsim_class);
1742 }
1743
1744 static struct platform_driver mac80211_hwsim_driver = {
1745         .driver = {
1746                 .name = "mac80211_hwsim",
1747                 .owner = THIS_MODULE,
1748         },
1749 };
1750
1751 static const struct net_device_ops hwsim_netdev_ops = {
1752         .ndo_start_xmit         = hwsim_mon_xmit,
1753         .ndo_change_mtu         = eth_change_mtu,
1754         .ndo_set_mac_address    = eth_mac_addr,
1755         .ndo_validate_addr      = eth_validate_addr,
1756 };
1757
1758 static void hwsim_mon_setup(struct net_device *dev)
1759 {
1760         dev->netdev_ops = &hwsim_netdev_ops;
1761         dev->destructor = free_netdev;
1762         ether_setup(dev);
1763         dev->tx_queue_len = 0;
1764         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1765         memset(dev->dev_addr, 0, ETH_ALEN);
1766         dev->dev_addr[0] = 0x12;
1767 }
1768
1769
1770 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1771 {
1772         struct mac80211_hwsim_data *data = dat;
1773         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1774         struct sk_buff *skb;
1775         struct ieee80211_pspoll *pspoll;
1776
1777         if (!vp->assoc)
1778                 return;
1779
1780         wiphy_debug(data->hw->wiphy,
1781                     "%s: send PS-Poll to %pM for aid %d\n",
1782                     __func__, vp->bssid, vp->aid);
1783
1784         skb = dev_alloc_skb(sizeof(*pspoll));
1785         if (!skb)
1786                 return;
1787         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1788         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1789                                             IEEE80211_STYPE_PSPOLL |
1790                                             IEEE80211_FCTL_PM);
1791         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1792         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1793         memcpy(pspoll->ta, mac, ETH_ALEN);
1794
1795         rcu_read_lock();
1796         mac80211_hwsim_tx_frame(data->hw, skb,
1797                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1798         rcu_read_unlock();
1799 }
1800
1801 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1802                                 struct ieee80211_vif *vif, int ps)
1803 {
1804         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1805         struct sk_buff *skb;
1806         struct ieee80211_hdr *hdr;
1807
1808         if (!vp->assoc)
1809                 return;
1810
1811         wiphy_debug(data->hw->wiphy,
1812                     "%s: send data::nullfunc to %pM ps=%d\n",
1813                     __func__, vp->bssid, ps);
1814
1815         skb = dev_alloc_skb(sizeof(*hdr));
1816         if (!skb)
1817                 return;
1818         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1819         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1820                                          IEEE80211_STYPE_NULLFUNC |
1821                                          (ps ? IEEE80211_FCTL_PM : 0));
1822         hdr->duration_id = cpu_to_le16(0);
1823         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1824         memcpy(hdr->addr2, mac, ETH_ALEN);
1825         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1826
1827         rcu_read_lock();
1828         mac80211_hwsim_tx_frame(data->hw, skb,
1829                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1830         rcu_read_unlock();
1831 }
1832
1833
1834 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1835                                    struct ieee80211_vif *vif)
1836 {
1837         struct mac80211_hwsim_data *data = dat;
1838         hwsim_send_nullfunc(data, mac, vif, 1);
1839 }
1840
1841
1842 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1843                                       struct ieee80211_vif *vif)
1844 {
1845         struct mac80211_hwsim_data *data = dat;
1846         hwsim_send_nullfunc(data, mac, vif, 0);
1847 }
1848
1849
1850 static int hwsim_fops_ps_read(void *dat, u64 *val)
1851 {
1852         struct mac80211_hwsim_data *data = dat;
1853         *val = data->ps;
1854         return 0;
1855 }
1856
1857 static int hwsim_fops_ps_write(void *dat, u64 val)
1858 {
1859         struct mac80211_hwsim_data *data = dat;
1860         enum ps_mode old_ps;
1861
1862         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1863             val != PS_MANUAL_POLL)
1864                 return -EINVAL;
1865
1866         old_ps = data->ps;
1867         data->ps = val;
1868
1869         if (val == PS_MANUAL_POLL) {
1870                 ieee80211_iterate_active_interfaces(data->hw,
1871                                                     IEEE80211_IFACE_ITER_NORMAL,
1872                                                     hwsim_send_ps_poll, data);
1873                 data->ps_poll_pending = true;
1874         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1875                 ieee80211_iterate_active_interfaces(data->hw,
1876                                                     IEEE80211_IFACE_ITER_NORMAL,
1877                                                     hwsim_send_nullfunc_ps,
1878                                                     data);
1879         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1880                 ieee80211_iterate_active_interfaces(data->hw,
1881                                                     IEEE80211_IFACE_ITER_NORMAL,
1882                                                     hwsim_send_nullfunc_no_ps,
1883                                                     data);
1884         }
1885
1886         return 0;
1887 }
1888
1889 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1890                         "%llu\n");
1891
1892 static int hwsim_write_simulate_radar(void *dat, u64 val)
1893 {
1894         struct mac80211_hwsim_data *data = dat;
1895
1896         ieee80211_radar_detected(data->hw);
1897
1898         return 0;
1899 }
1900
1901 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
1902                         hwsim_write_simulate_radar, "%llu\n");
1903
1904 static int hwsim_fops_group_read(void *dat, u64 *val)
1905 {
1906         struct mac80211_hwsim_data *data = dat;
1907         *val = data->group;
1908         return 0;
1909 }
1910
1911 static int hwsim_fops_group_write(void *dat, u64 val)
1912 {
1913         struct mac80211_hwsim_data *data = dat;
1914         data->group = val;
1915         return 0;
1916 }
1917
1918 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1919                         hwsim_fops_group_read, hwsim_fops_group_write,
1920                         "%llx\n");
1921
1922 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1923                              struct mac_address *addr)
1924 {
1925         struct mac80211_hwsim_data *data;
1926         bool _found = false;
1927
1928         spin_lock_bh(&hwsim_radio_lock);
1929         list_for_each_entry(data, &hwsim_radios, list) {
1930                 if (memcmp(data->addresses[1].addr, addr,
1931                           sizeof(struct mac_address)) == 0) {
1932                         _found = true;
1933                         break;
1934                 }
1935         }
1936         spin_unlock_bh(&hwsim_radio_lock);
1937
1938         if (!_found)
1939                 return NULL;
1940
1941         return data;
1942 }
1943
1944 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1945                                            struct genl_info *info)
1946 {
1947
1948         struct ieee80211_hdr *hdr;
1949         struct mac80211_hwsim_data *data2;
1950         struct ieee80211_tx_info *txi;
1951         struct hwsim_tx_rate *tx_attempts;
1952         unsigned long ret_skb_ptr;
1953         struct sk_buff *skb, *tmp;
1954         struct mac_address *src;
1955         unsigned int hwsim_flags;
1956
1957         int i;
1958         bool found = false;
1959
1960         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1961            !info->attrs[HWSIM_ATTR_FLAGS] ||
1962            !info->attrs[HWSIM_ATTR_COOKIE] ||
1963            !info->attrs[HWSIM_ATTR_TX_INFO])
1964                 goto out;
1965
1966         src = (struct mac_address *)nla_data(
1967                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1968         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1969
1970         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1971
1972         data2 = get_hwsim_data_ref_from_addr(src);
1973
1974         if (data2 == NULL)
1975                 goto out;
1976
1977         /* look for the skb matching the cookie passed back from user */
1978         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1979                 if ((unsigned long)skb == ret_skb_ptr) {
1980                         skb_unlink(skb, &data2->pending);
1981                         found = true;
1982                         break;
1983                 }
1984         }
1985
1986         /* not found */
1987         if (!found)
1988                 goto out;
1989
1990         /* Tx info received because the frame was broadcasted on user space,
1991          so we get all the necessary info: tx attempts and skb control buff */
1992
1993         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1994                        info->attrs[HWSIM_ATTR_TX_INFO]);
1995
1996         /* now send back TX status */
1997         txi = IEEE80211_SKB_CB(skb);
1998
1999         ieee80211_tx_info_clear_status(txi);
2000
2001         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2002                 txi->status.rates[i].idx = tx_attempts[i].idx;
2003                 txi->status.rates[i].count = tx_attempts[i].count;
2004                 /*txi->status.rates[i].flags = 0;*/
2005         }
2006
2007         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2008
2009         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2010            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2011                 if (skb->len >= 16) {
2012                         hdr = (struct ieee80211_hdr *) skb->data;
2013                         mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
2014                                                    hdr->addr2);
2015                 }
2016                 txi->flags |= IEEE80211_TX_STAT_ACK;
2017         }
2018         ieee80211_tx_status_irqsafe(data2->hw, skb);
2019         return 0;
2020 out:
2021         return -EINVAL;
2022
2023 }
2024
2025 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2026                                           struct genl_info *info)
2027 {
2028
2029         struct mac80211_hwsim_data *data2;
2030         struct ieee80211_rx_status rx_status;
2031         struct mac_address *dst;
2032         int frame_data_len;
2033         char *frame_data;
2034         struct sk_buff *skb = NULL;
2035
2036         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2037             !info->attrs[HWSIM_ATTR_FRAME] ||
2038             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2039             !info->attrs[HWSIM_ATTR_SIGNAL])
2040                 goto out;
2041
2042         dst = (struct mac_address *)nla_data(
2043                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2044
2045         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2046         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2047
2048         /* Allocate new skb here */
2049         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2050         if (skb == NULL)
2051                 goto err;
2052
2053         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
2054                 /* Copy the data */
2055                 memcpy(skb_put(skb, frame_data_len), frame_data,
2056                        frame_data_len);
2057         } else
2058                 goto err;
2059
2060         data2 = get_hwsim_data_ref_from_addr(dst);
2061
2062         if (data2 == NULL)
2063                 goto out;
2064
2065         /* check if radio is configured properly */
2066
2067         if (data2->idle || !data2->started)
2068                 goto out;
2069
2070         /*A frame is received from user space*/
2071         memset(&rx_status, 0, sizeof(rx_status));
2072         rx_status.freq = data2->channel->center_freq;
2073         rx_status.band = data2->channel->band;
2074         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2075         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2076
2077         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2078         ieee80211_rx_irqsafe(data2->hw, skb);
2079
2080         return 0;
2081 err:
2082         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2083         goto out;
2084 out:
2085         dev_kfree_skb(skb);
2086         return -EINVAL;
2087 }
2088
2089 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2090                                       struct genl_info *info)
2091 {
2092         if (info == NULL)
2093                 goto out;
2094
2095         wmediumd_portid = info->snd_portid;
2096
2097         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2098                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2099
2100         return 0;
2101 out:
2102         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2103         return -EINVAL;
2104 }
2105
2106 /* Generic Netlink operations array */
2107 static const struct genl_ops hwsim_ops[] = {
2108         {
2109                 .cmd = HWSIM_CMD_REGISTER,
2110                 .policy = hwsim_genl_policy,
2111                 .doit = hwsim_register_received_nl,
2112                 .flags = GENL_ADMIN_PERM,
2113         },
2114         {
2115                 .cmd = HWSIM_CMD_FRAME,
2116                 .policy = hwsim_genl_policy,
2117                 .doit = hwsim_cloned_frame_received_nl,
2118         },
2119         {
2120                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2121                 .policy = hwsim_genl_policy,
2122                 .doit = hwsim_tx_info_frame_received_nl,
2123         },
2124 };
2125
2126 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2127                                          unsigned long state,
2128                                          void *_notify)
2129 {
2130         struct netlink_notify *notify = _notify;
2131
2132         if (state != NETLINK_URELEASE)
2133                 return NOTIFY_DONE;
2134
2135         if (notify->portid == wmediumd_portid) {
2136                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2137                        " socket, switching to perfect channel medium\n");
2138                 wmediumd_portid = 0;
2139         }
2140         return NOTIFY_DONE;
2141
2142 }
2143
2144 static struct notifier_block hwsim_netlink_notifier = {
2145         .notifier_call = mac80211_hwsim_netlink_notify,
2146 };
2147
2148 static int hwsim_init_netlink(void)
2149 {
2150         int rc;
2151
2152         /* userspace test API hasn't been adjusted for multi-channel */
2153         if (channels > 1)
2154                 return 0;
2155
2156         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2157
2158         rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2159         if (rc)
2160                 goto failure;
2161
2162         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2163         if (rc)
2164                 goto failure;
2165
2166         return 0;
2167
2168 failure:
2169         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2170         return -EINVAL;
2171 }
2172
2173 static void hwsim_exit_netlink(void)
2174 {
2175         int ret;
2176
2177         /* userspace test API hasn't been adjusted for multi-channel */
2178         if (channels > 1)
2179                 return;
2180
2181         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2182         /* unregister the notifier */
2183         netlink_unregister_notifier(&hwsim_netlink_notifier);
2184         /* unregister the family */
2185         ret = genl_unregister_family(&hwsim_genl_family);
2186         if (ret)
2187                 printk(KERN_DEBUG "mac80211_hwsim: "
2188                        "unregister family %i\n", ret);
2189 }
2190
2191 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2192         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2193         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2194                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2195 #ifdef CONFIG_MAC80211_MESH
2196                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2197 #endif
2198                                  BIT(NL80211_IFTYPE_AP) |
2199                                  BIT(NL80211_IFTYPE_P2P_GO) },
2200         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2201 };
2202
2203 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
2204         { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
2205 };
2206
2207 static struct ieee80211_iface_combination hwsim_if_comb[] = {
2208         {
2209                 .limits = hwsim_if_limits,
2210                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
2211                 .max_interfaces = 2048,
2212                 .num_different_channels = 1,
2213         },
2214         {
2215                 .limits = hwsim_if_dfs_limits,
2216                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
2217                 .max_interfaces = 8,
2218                 .num_different_channels = 1,
2219                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2220                                        BIT(NL80211_CHAN_WIDTH_20) |
2221                                        BIT(NL80211_CHAN_WIDTH_40) |
2222                                        BIT(NL80211_CHAN_WIDTH_80) |
2223                                        BIT(NL80211_CHAN_WIDTH_160),
2224         }
2225 };
2226
2227 static int __init init_mac80211_hwsim(void)
2228 {
2229         int i, err = 0;
2230         u8 addr[ETH_ALEN];
2231         struct mac80211_hwsim_data *data;
2232         struct ieee80211_hw *hw;
2233         enum ieee80211_band band;
2234
2235         if (radios < 1 || radios > 100)
2236                 return -EINVAL;
2237
2238         if (channels < 1)
2239                 return -EINVAL;
2240
2241         if (channels > 1) {
2242                 hwsim_if_comb[0].num_different_channels = channels;
2243                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2244                 mac80211_hwsim_ops.cancel_hw_scan =
2245                         mac80211_hwsim_cancel_hw_scan;
2246                 mac80211_hwsim_ops.sw_scan_start = NULL;
2247                 mac80211_hwsim_ops.sw_scan_complete = NULL;
2248                 mac80211_hwsim_ops.remain_on_channel =
2249                         mac80211_hwsim_roc;
2250                 mac80211_hwsim_ops.cancel_remain_on_channel =
2251                         mac80211_hwsim_croc;
2252                 mac80211_hwsim_ops.add_chanctx =
2253                         mac80211_hwsim_add_chanctx;
2254                 mac80211_hwsim_ops.remove_chanctx =
2255                         mac80211_hwsim_remove_chanctx;
2256                 mac80211_hwsim_ops.change_chanctx =
2257                         mac80211_hwsim_change_chanctx;
2258                 mac80211_hwsim_ops.assign_vif_chanctx =
2259                         mac80211_hwsim_assign_vif_chanctx;
2260                 mac80211_hwsim_ops.unassign_vif_chanctx =
2261                         mac80211_hwsim_unassign_vif_chanctx;
2262         }
2263
2264         spin_lock_init(&hwsim_radio_lock);
2265         INIT_LIST_HEAD(&hwsim_radios);
2266
2267         err = platform_driver_register(&mac80211_hwsim_driver);
2268         if (err)
2269                 return err;
2270
2271         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2272         if (IS_ERR(hwsim_class)) {
2273                 err = PTR_ERR(hwsim_class);
2274                 goto failed_unregister_driver;
2275         }
2276
2277         memset(addr, 0, ETH_ALEN);
2278         addr[0] = 0x02;
2279
2280         for (i = 0; i < radios; i++) {
2281                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2282                        i);
2283                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2284                 if (!hw) {
2285                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2286                                "failed\n");
2287                         err = -ENOMEM;
2288                         goto failed;
2289                 }
2290                 data = hw->priv;
2291                 data->hw = hw;
2292
2293                 data->dev = device_create(hwsim_class, NULL, 0, hw,
2294                                           "hwsim%d", i);
2295                 if (IS_ERR(data->dev)) {
2296                         printk(KERN_DEBUG
2297                                "mac80211_hwsim: device_create failed (%ld)\n",
2298                                PTR_ERR(data->dev));
2299                         err = -ENOMEM;
2300                         goto failed_drvdata;
2301                 }
2302                 data->dev->driver = &mac80211_hwsim_driver.driver;
2303                 err = device_bind_driver(data->dev);
2304                 if (err != 0) {
2305                         printk(KERN_DEBUG
2306                                "mac80211_hwsim: device_bind_driver failed (%d)\n",
2307                                err);
2308                         goto failed_hw;
2309                 }
2310
2311                 skb_queue_head_init(&data->pending);
2312
2313                 SET_IEEE80211_DEV(hw, data->dev);
2314                 addr[3] = i >> 8;
2315                 addr[4] = i;
2316                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2317                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2318                 data->addresses[1].addr[0] |= 0x40;
2319                 hw->wiphy->n_addresses = 2;
2320                 hw->wiphy->addresses = data->addresses;
2321
2322                 hw->wiphy->iface_combinations = hwsim_if_comb;
2323                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2324
2325                 if (channels > 1) {
2326                         hw->wiphy->max_scan_ssids = 255;
2327                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2328                         hw->wiphy->max_remain_on_channel_duration = 1000;
2329                         /* For channels > 1 DFS is not allowed */
2330                         hw->wiphy->n_iface_combinations = 1;
2331                 }
2332
2333                 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2334                 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2335
2336                 hw->channel_change_time = 1;
2337                 hw->queues = 5;
2338                 hw->offchannel_tx_hw_queue = 4;
2339                 hw->wiphy->interface_modes =
2340                         BIT(NL80211_IFTYPE_STATION) |
2341                         BIT(NL80211_IFTYPE_AP) |
2342                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
2343                         BIT(NL80211_IFTYPE_P2P_GO) |
2344                         BIT(NL80211_IFTYPE_ADHOC) |
2345                         BIT(NL80211_IFTYPE_MESH_POINT) |
2346                         BIT(NL80211_IFTYPE_P2P_DEVICE);
2347
2348                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2349                             IEEE80211_HW_SIGNAL_DBM |
2350                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2351                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2352                             IEEE80211_HW_AMPDU_AGGREGATION |
2353                             IEEE80211_HW_WANT_MONITOR_VIF |
2354                             IEEE80211_HW_QUEUE_CONTROL |
2355                             IEEE80211_HW_SUPPORTS_HT_CCK_RATES;
2356                 if (rctbl)
2357                         hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2358
2359                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2360                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2361                                     WIPHY_FLAG_AP_UAPSD;
2362                 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
2363
2364                 /* ask mac80211 to reserve space for magic */
2365                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2366                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2367                 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2368
2369                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2370                         sizeof(hwsim_channels_2ghz));
2371                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2372                         sizeof(hwsim_channels_5ghz));
2373                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2374
2375                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2376                         struct ieee80211_supported_band *sband = &data->bands[band];
2377                         switch (band) {
2378                         case IEEE80211_BAND_2GHZ:
2379                                 sband->channels = data->channels_2ghz;
2380                                 sband->n_channels =
2381                                         ARRAY_SIZE(hwsim_channels_2ghz);
2382                                 sband->bitrates = data->rates;
2383                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2384                                 break;
2385                         case IEEE80211_BAND_5GHZ:
2386                                 sband->channels = data->channels_5ghz;
2387                                 sband->n_channels =
2388                                         ARRAY_SIZE(hwsim_channels_5ghz);
2389                                 sband->bitrates = data->rates + 4;
2390                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2391                                 break;
2392                         default:
2393                                 continue;
2394                         }
2395
2396                         sband->ht_cap.ht_supported = true;
2397                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2398                                 IEEE80211_HT_CAP_GRN_FLD |
2399                                 IEEE80211_HT_CAP_SGI_40 |
2400                                 IEEE80211_HT_CAP_DSSSCCK40;
2401                         sband->ht_cap.ampdu_factor = 0x3;
2402                         sband->ht_cap.ampdu_density = 0x6;
2403                         memset(&sband->ht_cap.mcs, 0,
2404                                sizeof(sband->ht_cap.mcs));
2405                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
2406                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
2407                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2408
2409                         hw->wiphy->bands[band] = sband;
2410
2411                         sband->vht_cap.vht_supported = true;
2412                         sband->vht_cap.cap =
2413                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2414                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2415                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2416                                 IEEE80211_VHT_CAP_RXLDPC |
2417                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2418                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2419                                 IEEE80211_VHT_CAP_TXSTBC |
2420                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2421                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2422                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2423                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2424                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2425                         sband->vht_cap.vht_mcs.rx_mcs_map =
2426                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2427                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2428                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2429                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2430                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2431                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2432                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2433                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2434                         sband->vht_cap.vht_mcs.tx_mcs_map =
2435                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2436                 }
2437                 /* By default all radios are belonging to the first group */
2438                 data->group = 1;
2439                 mutex_init(&data->mutex);
2440
2441                 /* Enable frame retransmissions for lossy channels */
2442                 hw->max_rates = 4;
2443                 hw->max_rate_tries = 11;
2444
2445                 /* Work to be done prior to ieee80211_register_hw() */
2446                 switch (regtest) {
2447                 case HWSIM_REGTEST_DISABLED:
2448                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2449                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2450                 case HWSIM_REGTEST_DIFF_COUNTRY:
2451                         /*
2452                          * Nothing to be done for driver regulatory domain
2453                          * hints prior to ieee80211_register_hw()
2454                          */
2455                         break;
2456                 case HWSIM_REGTEST_WORLD_ROAM:
2457                         if (i == 0) {
2458                                 hw->wiphy->regulatory_flags |=
2459                                         REGULATORY_CUSTOM_REG;
2460                                 wiphy_apply_custom_regulatory(hw->wiphy,
2461                                         &hwsim_world_regdom_custom_01);
2462                         }
2463                         break;
2464                 case HWSIM_REGTEST_CUSTOM_WORLD:
2465                         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2466                         wiphy_apply_custom_regulatory(hw->wiphy,
2467                                 &hwsim_world_regdom_custom_01);
2468                         break;
2469                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2470                         if (i == 0) {
2471                                 hw->wiphy->regulatory_flags |=
2472                                         REGULATORY_CUSTOM_REG;
2473                                 wiphy_apply_custom_regulatory(hw->wiphy,
2474                                         &hwsim_world_regdom_custom_01);
2475                         } else if (i == 1) {
2476                                 hw->wiphy->regulatory_flags |=
2477                                         REGULATORY_CUSTOM_REG;
2478                                 wiphy_apply_custom_regulatory(hw->wiphy,
2479                                         &hwsim_world_regdom_custom_02);
2480                         }
2481                         break;
2482                 case HWSIM_REGTEST_STRICT_ALL:
2483                         hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2484                         break;
2485                 case HWSIM_REGTEST_STRICT_FOLLOW:
2486                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2487                         if (i == 0)
2488                                 hw->wiphy->regulatory_flags |=
2489                                         REGULATORY_STRICT_REG;
2490                         break;
2491                 case HWSIM_REGTEST_ALL:
2492                         if (i == 0) {
2493                                 hw->wiphy->regulatory_flags |=
2494                                         REGULATORY_CUSTOM_REG;
2495                                 wiphy_apply_custom_regulatory(hw->wiphy,
2496                                         &hwsim_world_regdom_custom_01);
2497                         } else if (i == 1) {
2498                                 hw->wiphy->regulatory_flags |=
2499                                         REGULATORY_CUSTOM_REG;
2500                                 wiphy_apply_custom_regulatory(hw->wiphy,
2501                                         &hwsim_world_regdom_custom_02);
2502                         } else if (i == 4)
2503                                 hw->wiphy->regulatory_flags |=
2504                                         REGULATORY_STRICT_REG;
2505                         break;
2506                 default:
2507                         break;
2508                 }
2509
2510                 /* give the regulatory workqueue a chance to run */
2511                 if (regtest)
2512                         schedule_timeout_interruptible(1);
2513                 err = ieee80211_register_hw(hw);
2514                 if (err < 0) {
2515                         printk(KERN_DEBUG "mac80211_hwsim: "
2516                                "ieee80211_register_hw failed (%d)\n", err);
2517                         goto failed_hw;
2518                 }
2519
2520                 /* Work to be done after to ieee80211_register_hw() */
2521                 switch (regtest) {
2522                 case HWSIM_REGTEST_WORLD_ROAM:
2523                 case HWSIM_REGTEST_DISABLED:
2524                         break;
2525                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2526                         if (!i)
2527                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2528                         break;
2529                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2530                 case HWSIM_REGTEST_STRICT_ALL:
2531                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2532                         break;
2533                 case HWSIM_REGTEST_DIFF_COUNTRY:
2534                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2535                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2536                         break;
2537                 case HWSIM_REGTEST_CUSTOM_WORLD:
2538                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2539                         /*
2540                          * Nothing to be done for custom world regulatory
2541                          * domains after to ieee80211_register_hw
2542                          */
2543                         break;
2544                 case HWSIM_REGTEST_STRICT_FOLLOW:
2545                         if (i == 0)
2546                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2547                         break;
2548                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2549                         if (i == 0)
2550                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2551                         else if (i == 1)
2552                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2553                         break;
2554                 case HWSIM_REGTEST_ALL:
2555                         if (i == 2)
2556                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2557                         else if (i == 3)
2558                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2559                         else if (i == 4)
2560                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2561                         break;
2562                 default:
2563                         break;
2564                 }
2565
2566                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2567                             hw->wiphy->perm_addr);
2568
2569                 data->debugfs = debugfs_create_dir("hwsim",
2570                                                    hw->wiphy->debugfsdir);
2571                 debugfs_create_file("ps", 0666, data->debugfs, data,
2572                                     &hwsim_fops_ps);
2573                 debugfs_create_file("group", 0666, data->debugfs, data,
2574                                     &hwsim_fops_group);
2575                 if (channels == 1)
2576                         debugfs_create_file("dfs_simulate_radar", 0222,
2577                                             data->debugfs,
2578                                             data, &hwsim_simulate_radar);
2579
2580                 tasklet_hrtimer_init(&data->beacon_timer,
2581                                      mac80211_hwsim_beacon,
2582                                      CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2583
2584                 list_add_tail(&data->list, &hwsim_radios);
2585         }
2586
2587         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2588         if (hwsim_mon == NULL) {
2589                 err = -ENOMEM;
2590                 goto failed;
2591         }
2592
2593         rtnl_lock();
2594
2595         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2596         if (err < 0)
2597                 goto failed_mon;
2598
2599
2600         err = register_netdevice(hwsim_mon);
2601         if (err < 0)
2602                 goto failed_mon;
2603
2604         rtnl_unlock();
2605
2606         err = hwsim_init_netlink();
2607         if (err < 0)
2608                 goto failed_nl;
2609
2610         return 0;
2611
2612 failed_nl:
2613         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2614         return err;
2615
2616 failed_mon:
2617         rtnl_unlock();
2618         free_netdev(hwsim_mon);
2619         mac80211_hwsim_free();
2620         return err;
2621
2622 failed_hw:
2623         device_unregister(data->dev);
2624 failed_drvdata:
2625         ieee80211_free_hw(hw);
2626 failed:
2627         mac80211_hwsim_free();
2628 failed_unregister_driver:
2629         platform_driver_unregister(&mac80211_hwsim_driver);
2630         return err;
2631 }
2632 module_init(init_mac80211_hwsim);
2633
2634 static void __exit exit_mac80211_hwsim(void)
2635 {
2636         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2637
2638         hwsim_exit_netlink();
2639
2640         mac80211_hwsim_free();
2641         unregister_netdev(hwsim_mon);
2642         platform_driver_unregister(&mac80211_hwsim_driver);
2643 }
2644 module_exit(exit_mac80211_hwsim);