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_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 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         struct dentry *debugfs_ps;
 357
 358         struct sk_buff_head pending;    /* packets pending */
 359         /*
 360          * Only radios in the same group can communicate together (the
 361          * channel has to match too). Each bit represents a group. A
 362          * radio can be in more then one group.
 363          */
 364         u64 group;
 365         struct dentry *debugfs_group;
 366
 367         int power_level;
 368
 369         /* difference between this hw's clock and the real clock, in usecs */
 370         s64 tsf_offset;
 371         s64 bcn_delta;
 372         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 373         u64 abs_bcn_ts;
 374 };
 375
 376
 377 struct hwsim_radiotap_hdr {
 378         struct ieee80211_radiotap_header hdr;
 379         __le64 rt_tsft;
 380         u8 rt_flags;
 381         u8 rt_rate;
 382         __le16 rt_channel;
 383         __le16 rt_chbitmask;
 384 } __packed;
 385
 386 struct hwsim_radiotap_ack_hdr {
 387         struct ieee80211_radiotap_header hdr;
 388         u8 rt_flags;
 389         u8 pad;
 390         __le16 rt_channel;
 391         __le16 rt_chbitmask;
 392 } __packed;
 393
 394 /* MAC80211_HWSIM netlinf family */
 395 static struct genl_family hwsim_genl_family = {
 396         .id = GENL_ID_GENERATE,
 397         .hdrsize = 0,
 398         .name = "MAC80211_HWSIM",
 399         .version = 1,
 400         .maxattr = HWSIM_ATTR_MAX,
 401 };
 402
 403 /* MAC80211_HWSIM netlink policy */
 404
 405 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 406         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 407                                        .len = 6*sizeof(u8) },
 408         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 409                                           .len = 6*sizeof(u8) },
 410         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 411                                .len = IEEE80211_MAX_DATA_LEN },
 412         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 413         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 414         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 415         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 416                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 417                                         struct hwsim_tx_rate)},
 418         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 419 };
 420
 421 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 422                                         struct net_device *dev)
 423 {
 424         /* TODO: allow packet injection */
 425         dev_kfree_skb(skb);
 426         return NETDEV_TX_OK;
 427 }
 428
 429 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 430 {
 431         return ktime_to_us(ktime_get_real());
 432 }
 433
 434 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 435 {
 436         u64 now = mac80211_hwsim_get_tsf_raw();
 437         return cpu_to_le64(now + data->tsf_offset);
 438 }
 439
 440 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 441                                   struct ieee80211_vif *vif)
 442 {
 443         struct mac80211_hwsim_data *data = hw->priv;
 444         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 445 }
 446
 447 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 448                 struct ieee80211_vif *vif, u64 tsf)
 449 {
 450         struct mac80211_hwsim_data *data = hw->priv;
 451         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 452         u32 bcn_int = data->beacon_int;
 453         s64 delta = tsf - now;
 454
 455         data->tsf_offset += delta;
 456         /* adjust after beaconing with new timestamp at old TBTT */
 457         data->bcn_delta = do_div(delta, bcn_int);
 458 }
 459
 460 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 461                                       struct sk_buff *tx_skb,
 462                                       struct ieee80211_channel *chan)
 463 {
 464         struct mac80211_hwsim_data *data = hw->priv;
 465         struct sk_buff *skb;
 466         struct hwsim_radiotap_hdr *hdr;
 467         u16 flags;
 468         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 469         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 470
 471         if (!netif_running(hwsim_mon))
 472                 return;
 473
 474         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 475         if (skb == NULL)
 476                 return;
 477
 478         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 479         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 480         hdr->hdr.it_pad = 0;
 481         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 482         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 483                                           (1 << IEEE80211_RADIOTAP_RATE) |
 484                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 485                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 486         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 487         hdr->rt_flags = 0;
 488         hdr->rt_rate = txrate->bitrate / 5;
 489         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 490         flags = IEEE80211_CHAN_2GHZ;
 491         if (txrate->flags & IEEE80211_RATE_ERP_G)
 492                 flags |= IEEE80211_CHAN_OFDM;
 493         else
 494                 flags |= IEEE80211_CHAN_CCK;
 495         hdr->rt_chbitmask = cpu_to_le16(flags);
 496
 497         skb->dev = hwsim_mon;
 498         skb_set_mac_header(skb, 0);
 499         skb->ip_summed = CHECKSUM_UNNECESSARY;
 500         skb->pkt_type = PACKET_OTHERHOST;
 501         skb->protocol = htons(ETH_P_802_2);
 502         memset(skb->cb, 0, sizeof(skb->cb));
 503         netif_rx(skb);
 504 }
 505
 506
 507 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 508                                        const u8 *addr)
 509 {
 510         struct sk_buff *skb;
 511         struct hwsim_radiotap_ack_hdr *hdr;
 512         u16 flags;
 513         struct ieee80211_hdr *hdr11;
 514
 515         if (!netif_running(hwsim_mon))
 516                 return;
 517
 518         skb = dev_alloc_skb(100);
 519         if (skb == NULL)
 520                 return;
 521
 522         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 523         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 524         hdr->hdr.it_pad = 0;
 525         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 526         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 527                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 528         hdr->rt_flags = 0;
 529         hdr->pad = 0;
 530         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 531         flags = IEEE80211_CHAN_2GHZ;
 532         hdr->rt_chbitmask = cpu_to_le16(flags);
 533
 534         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 535         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 536                                            IEEE80211_STYPE_ACK);
 537         hdr11->duration_id = cpu_to_le16(0);
 538         memcpy(hdr11->addr1, addr, ETH_ALEN);
 539
 540         skb->dev = hwsim_mon;
 541         skb_set_mac_header(skb, 0);
 542         skb->ip_summed = CHECKSUM_UNNECESSARY;
 543         skb->pkt_type = PACKET_OTHERHOST;
 544         skb->protocol = htons(ETH_P_802_2);
 545         memset(skb->cb, 0, sizeof(skb->cb));
 546         netif_rx(skb);
 547 }
 548
 549
 550 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 551                            struct sk_buff *skb)
 552 {
 553         switch (data->ps) {
 554         case PS_DISABLED:
 555                 return true;
 556         case PS_ENABLED:
 557                 return false;
 558         case PS_AUTO_POLL:
 559                 /* TODO: accept (some) Beacons by default and other frames only
 560                  * if pending PS-Poll has been sent */
 561                 return true;
 562         case PS_MANUAL_POLL:
 563                 /* Allow unicast frames to own address if there is a pending
 564                  * PS-Poll */
 565                 if (data->ps_poll_pending &&
 566                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 567                            ETH_ALEN) == 0) {
 568                         data->ps_poll_pending = false;
 569                         return true;
 570                 }
 571                 return false;
 572         }
 573
 574         return true;
 575 }
 576
 577
 578 struct mac80211_hwsim_addr_match_data {
 579         bool ret;
 580         const u8 *addr;
 581 };
 582
 583 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 584                                      struct ieee80211_vif *vif)
 585 {
 586         struct mac80211_hwsim_addr_match_data *md = data;
 587         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 588                 md->ret = true;
 589 }
 590
 591
 592 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 593                                       const u8 *addr)
 594 {
 595         struct mac80211_hwsim_addr_match_data md;
 596
 597         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 598                 return true;
 599
 600         md.ret = false;
 601         md.addr = addr;
 602         ieee80211_iterate_active_interfaces_atomic(data->hw,
 603                                                    IEEE80211_IFACE_ITER_NORMAL,
 604                                                    mac80211_hwsim_addr_iter,
 605                                                    &md);
 606
 607         return md.ret;
 608 }
 609
 610 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 611                                        struct sk_buff *my_skb,
 612                                        int dst_portid)
 613 {
 614         struct sk_buff *skb;
 615         struct mac80211_hwsim_data *data = hw->priv;
 616         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 617         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 618         void *msg_head;
 619         unsigned int hwsim_flags = 0;
 620         int i;
 621         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 622
 623         if (data->ps != PS_DISABLED)
 624                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 625         /* If the queue contains MAX_QUEUE skb's drop some */
 626         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 627                 /* Droping until WARN_QUEUE level */
 628                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 629                         skb_dequeue(&data->pending);
 630         }
 631
 632         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 633         if (skb == NULL)
 634                 goto nla_put_failure;
 635
 636         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 637                                HWSIM_CMD_FRAME);
 638         if (msg_head == NULL) {
 639                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 640                 goto nla_put_failure;
 641         }
 642
 643         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 644                     sizeof(struct mac_address), data->addresses[1].addr))
 645                 goto nla_put_failure;
 646
 647         /* We get the skb->data */
 648         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 649                 goto nla_put_failure;
 650
 651         /* We get the flags for this transmission, and we translate them to
 652            wmediumd flags  */
 653
 654         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 655                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 656
 657         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 658                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 659
 660         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 661                 goto nla_put_failure;
 662
 663         /* We get the tx control (rate and retries) info*/
 664
 665         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 666                 tx_attempts[i].idx = info->status.rates[i].idx;
 667                 tx_attempts[i].count = info->status.rates[i].count;
 668         }
 669
 670         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 671                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 672                     tx_attempts))
 673                 goto nla_put_failure;
 674
 675         /* We create a cookie to identify this skb */
 676         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 677                 goto nla_put_failure;
 678
 679         genlmsg_end(skb, msg_head);
 680         genlmsg_unicast(&init_net, skb, dst_portid);
 681
 682         /* Enqueue the packet */
 683         skb_queue_tail(&data->pending, my_skb);
 684         return;
 685
 686 nla_put_failure:
 687         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 688 }
 689
 690 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 691                                struct ieee80211_channel *c2)
 692 {
 693         if (!c1 || !c2)
 694                 return false;
 695
 696         return c1->center_freq == c2->center_freq;
 697 }
 698
 699 struct tx_iter_data {
 700         struct ieee80211_channel *channel;
 701         bool receive;
 702 };
 703
 704 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 705                                    struct ieee80211_vif *vif)
 706 {
 707         struct tx_iter_data *data = _data;
 708
 709         if (!vif->chanctx_conf)
 710                 return;
 711
 712         if (!hwsim_chans_compat(data->channel,
 713                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 714                 return;
 715
 716         data->receive = true;
 717 }
 718
 719 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 720                                           struct sk_buff *skb,
 721                                           struct ieee80211_channel *chan)
 722 {
 723         struct mac80211_hwsim_data *data = hw->priv, *data2;
 724         bool ack = false;
 725         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 726         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 727         struct ieee80211_rx_status rx_status;
 728         u64 now;
 729
 730         memset(&rx_status, 0, sizeof(rx_status));
 731         rx_status.flag |= RX_FLAG_MACTIME_START;
 732         rx_status.freq = chan->center_freq;
 733         rx_status.band = chan->band;
 734         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 735                 rx_status.rate_idx =
 736                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
 737                 rx_status.vht_nss =
 738                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
 739                 rx_status.flag |= RX_FLAG_VHT;
 740         } else {
 741                 rx_status.rate_idx = info->control.rates[0].idx;
 742                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 743                         rx_status.flag |= RX_FLAG_HT;
 744         }
 745         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 746                 rx_status.flag |= RX_FLAG_40MHZ;
 747         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 748                 rx_status.flag |= RX_FLAG_SHORT_GI;
 749         /* TODO: simulate real signal strength (and optional packet loss) */
 750         rx_status.signal = data->power_level - 50;
 751
 752         if (data->ps != PS_DISABLED)
 753                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 754
 755         /* release the skb's source info */
 756         skb_orphan(skb);
 757         skb_dst_drop(skb);
 758         skb->mark = 0;
 759         secpath_reset(skb);
 760         nf_reset(skb);
 761
 762         /*
 763          * Get absolute mactime here so all HWs RX at the "same time", and
 764          * absolute TX time for beacon mactime so the timestamp matches.
 765          * Giving beacons a different mactime than non-beacons looks messy, but
 766          * it helps the Toffset be exact and a ~10us mactime discrepancy
 767          * probably doesn't really matter.
 768          */
 769         if (ieee80211_is_beacon(hdr->frame_control) ||
 770             ieee80211_is_probe_resp(hdr->frame_control))
 771                 now = data->abs_bcn_ts;
 772         else
 773                 now = mac80211_hwsim_get_tsf_raw();
 774
 775         /* Copy skb to all enabled radios that are on the current frequency */
 776         spin_lock(&hwsim_radio_lock);
 777         list_for_each_entry(data2, &hwsim_radios, list) {
 778                 struct sk_buff *nskb;
 779                 struct tx_iter_data tx_iter_data = {
 780                         .receive = false,
 781                         .channel = chan,
 782                 };
 783
 784                 if (data == data2)
 785                         continue;
 786
 787                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 788                     !hwsim_ps_rx_ok(data2, skb))
 789                         continue;
 790
 791                 if (!(data->group & data2->group))
 792                         continue;
 793
 794                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 795                     !hwsim_chans_compat(chan, data2->channel)) {
 796                         ieee80211_iterate_active_interfaces_atomic(
 797                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 798                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 799                         if (!tx_iter_data.receive)
 800                                 continue;
 801                 }
 802
 803                 /*
 804                  * reserve some space for our vendor and the normal
 805                  * radiotap header, since we're copying anyway
 806                  */
 807                 if (skb->len < PAGE_SIZE && paged_rx) {
 808                         struct page *page = alloc_page(GFP_ATOMIC);
 809
 810                         if (!page)
 811                                 continue;
 812
 813                         nskb = dev_alloc_skb(128);
 814                         if (!nskb) {
 815                                 __free_page(page);
 816                                 continue;
 817                         }
 818
 819                         memcpy(page_address(page), skb->data, skb->len);
 820                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 821                 } else {
 822                         nskb = skb_copy(skb, GFP_ATOMIC);
 823                         if (!nskb)
 824                                 continue;
 825                 }
 826
 827                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 828                         ack = true;
 829
 830                 rx_status.mactime = now + data2->tsf_offset;
 831 #if 0
 832                 /*
 833                  * Don't enable this code by default as the OUI 00:00:00
 834                  * is registered to Xerox so we shouldn't use it here, it
 835                  * might find its way into pcap files.
 836                  * Note that this code requires the headroom in the SKB
 837                  * that was allocated earlier.
 838                  */
 839                 rx_status.vendor_radiotap_oui[0] = 0x00;
 840                 rx_status.vendor_radiotap_oui[1] = 0x00;
 841                 rx_status.vendor_radiotap_oui[2] = 0x00;
 842                 rx_status.vendor_radiotap_subns = 127;
 843                 /*
 844                  * Radiotap vendor namespaces can (and should) also be
 845                  * split into fields by using the standard radiotap
 846                  * presence bitmap mechanism. Use just BIT(0) here for
 847                  * the presence bitmap.
 848                  */
 849                 rx_status.vendor_radiotap_bitmap = BIT(0);
 850                 /* We have 8 bytes of (dummy) data */
 851                 rx_status.vendor_radiotap_len = 8;
 852                 /* For testing, also require it to be aligned */
 853                 rx_status.vendor_radiotap_align = 8;
 854                 /* push the data */
 855                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 856 #endif
 857
 858                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 859                 ieee80211_rx_irqsafe(data2->hw, nskb);
 860         }
 861         spin_unlock(&hwsim_radio_lock);
 862
 863         return ack;
 864 }
 865
 866 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 867                               struct ieee80211_tx_control *control,
 868                               struct sk_buff *skb)
 869 {
 870         struct mac80211_hwsim_data *data = hw->priv;
 871         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 872         struct ieee80211_chanctx_conf *chanctx_conf;
 873         struct ieee80211_channel *channel;
 874         bool ack;
 875         u32 _portid;
 876
 877         if (WARN_ON(skb->len < 10)) {
 878                 /* Should not happen; just a sanity check for addr1 use */
 879                 ieee80211_free_txskb(hw, skb);
 880                 return;
 881         }
 882
 883         if (channels == 1) {
 884                 channel = data->channel;
 885         } else if (txi->hw_queue == 4) {
 886                 channel = data->tmp_chan;
 887         } else {
 888                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 889                 if (chanctx_conf)
 890                         channel = chanctx_conf->def.chan;
 891                 else
 892                         channel = NULL;
 893         }
 894
 895         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 896                 ieee80211_free_txskb(hw, skb);
 897                 return;
 898         }
 899
 900         if (data->idle && !data->tmp_chan) {
 901                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 902                 ieee80211_free_txskb(hw, skb);
 903                 return;
 904         }
 905
 906         if (txi->control.vif)
 907                 hwsim_check_magic(txi->control.vif);
 908         if (control->sta)
 909                 hwsim_check_sta_magic(control->sta);
 910
 911         if (rctbl)
 912                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
 913                                        txi->control.rates,
 914                                        ARRAY_SIZE(txi->control.rates));
 915
 916         txi->rate_driver_data[0] = channel;
 917         mac80211_hwsim_monitor_rx(hw, skb, channel);
 918
 919         /* wmediumd mode check */
 920         _portid = ACCESS_ONCE(wmediumd_portid);
 921
 922         if (_portid)
 923                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 924
 925         /* NO wmediumd detected, perfect medium simulation */
 926         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 927
 928         if (ack && skb->len >= 16) {
 929                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 930                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 931         }
 932
 933         ieee80211_tx_info_clear_status(txi);
 934
 935         /* frame was transmitted at most favorable rate at first attempt */
 936         txi->control.rates[0].count = 1;
 937         txi->control.rates[1].idx = -1;
 938
 939         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 940                 txi->flags |= IEEE80211_TX_STAT_ACK;
 941         ieee80211_tx_status_irqsafe(hw, skb);
 942 }
 943
 944
 945 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 946 {
 947         struct mac80211_hwsim_data *data = hw->priv;
 948         wiphy_debug(hw->wiphy, "%s\n", __func__);
 949         data->started = true;
 950         return 0;
 951 }
 952
 953
 954 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 955 {
 956         struct mac80211_hwsim_data *data = hw->priv;
 957         data->started = false;
 958         tasklet_hrtimer_cancel(&data->beacon_timer);
 959         wiphy_debug(hw->wiphy, "%s\n", __func__);
 960 }
 961
 962
 963 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 964                                         struct ieee80211_vif *vif)
 965 {
 966         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 967                     __func__, ieee80211_vif_type_p2p(vif),
 968                     vif->addr);
 969         hwsim_set_magic(vif);
 970
 971         vif->cab_queue = 0;
 972         vif->hw_queue[IEEE80211_AC_VO] = 0;
 973         vif->hw_queue[IEEE80211_AC_VI] = 1;
 974         vif->hw_queue[IEEE80211_AC_BE] = 2;
 975         vif->hw_queue[IEEE80211_AC_BK] = 3;
 976
 977         return 0;
 978 }
 979
 980
 981 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 982                                            struct ieee80211_vif *vif,
 983                                            enum nl80211_iftype newtype,
 984                                            bool newp2p)
 985 {
 986         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 987         wiphy_debug(hw->wiphy,
 988                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 989                     __func__, ieee80211_vif_type_p2p(vif),
 990                     newtype, vif->addr);
 991         hwsim_check_magic(vif);
 992
 993         /*
 994          * interface may change from non-AP to AP in
 995          * which case this needs to be set up again
 996          */
 997         vif->cab_queue = 0;
 998
 999         return 0;
1000 }
1001
1002 static void mac80211_hwsim_remove_interface(
1003         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1004 {
1005         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1006                     __func__, ieee80211_vif_type_p2p(vif),
1007                     vif->addr);
1008         hwsim_check_magic(vif);
1009         hwsim_clear_magic(vif);
1010 }
1011
1012 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1013                                     struct sk_buff *skb,
1014                                     struct ieee80211_channel *chan)
1015 {
1016         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1017
1018         if (rctbl) {
1019                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1020                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1021                                        txi->control.rates,
1022                                        ARRAY_SIZE(txi->control.rates));
1023         }
1024
1025         mac80211_hwsim_monitor_rx(hw, skb, chan);
1026
1027         if (_pid)
1028                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1029
1030         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1031         dev_kfree_skb(skb);
1032 }
1033
1034 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1035                                      struct ieee80211_vif *vif)
1036 {
1037         struct mac80211_hwsim_data *data = arg;
1038         struct ieee80211_hw *hw = data->hw;
1039         struct ieee80211_tx_info *info;
1040         struct ieee80211_rate *txrate;
1041         struct ieee80211_mgmt *mgmt;
1042         struct sk_buff *skb;
1043
1044         hwsim_check_magic(vif);
1045
1046         if (vif->type != NL80211_IFTYPE_AP &&
1047             vif->type != NL80211_IFTYPE_MESH_POINT &&
1048             vif->type != NL80211_IFTYPE_ADHOC)
1049                 return;
1050
1051         skb = ieee80211_beacon_get(hw, vif);
1052         if (skb == NULL)
1053                 return;
1054         info = IEEE80211_SKB_CB(skb);
1055         if (rctbl)
1056                 ieee80211_get_tx_rates(vif, NULL, skb,
1057                                        info->control.rates,
1058                                        ARRAY_SIZE(info->control.rates));
1059
1060         txrate = ieee80211_get_tx_rate(hw, info);
1061
1062         mgmt = (struct ieee80211_mgmt *) skb->data;
1063         /* fake header transmission time */
1064         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1065         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1066                                                data->tsf_offset +
1067                                                24 * 8 * 10 / txrate->bitrate);
1068
1069         mac80211_hwsim_tx_frame(hw, skb,
1070                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1071 }
1072
1073 static enum hrtimer_restart
1074 mac80211_hwsim_beacon(struct hrtimer *timer)
1075 {
1076         struct mac80211_hwsim_data *data =
1077                 container_of(timer, struct mac80211_hwsim_data,
1078                              beacon_timer.timer);
1079         struct ieee80211_hw *hw = data->hw;
1080         u64 bcn_int = data->beacon_int;
1081         ktime_t next_bcn;
1082
1083         if (!data->started)
1084                 goto out;
1085
1086         ieee80211_iterate_active_interfaces_atomic(
1087                 hw, IEEE80211_IFACE_ITER_NORMAL,
1088                 mac80211_hwsim_beacon_tx, data);
1089
1090         /* beacon at new TBTT + beacon interval */
1091         if (data->bcn_delta) {
1092                 bcn_int -= data->bcn_delta;
1093                 data->bcn_delta = 0;
1094         }
1095
1096         next_bcn = ktime_add(hrtimer_get_expires(timer),
1097                              ns_to_ktime(bcn_int * 1000));
1098         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1099 out:
1100         return HRTIMER_NORESTART;
1101 }
1102
1103 static const char * const hwsim_chanwidths[] = {
1104         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1105         [NL80211_CHAN_WIDTH_20] = "ht20",
1106         [NL80211_CHAN_WIDTH_40] = "ht40",
1107         [NL80211_CHAN_WIDTH_80] = "vht80",
1108         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1109         [NL80211_CHAN_WIDTH_160] = "vht160",
1110 };
1111
1112 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1113 {
1114         struct mac80211_hwsim_data *data = hw->priv;
1115         struct ieee80211_conf *conf = &hw->conf;
1116         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1117                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1118                 [IEEE80211_SMPS_OFF] = "off",
1119                 [IEEE80211_SMPS_STATIC] = "static",
1120                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1121         };
1122
1123         if (conf->chandef.chan)
1124                 wiphy_debug(hw->wiphy,
1125                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1126                             __func__,
1127                             conf->chandef.chan->center_freq,
1128                             conf->chandef.center_freq1,
1129                             conf->chandef.center_freq2,
1130                             hwsim_chanwidths[conf->chandef.width],
1131                             !!(conf->flags & IEEE80211_CONF_IDLE),
1132                             !!(conf->flags & IEEE80211_CONF_PS),
1133                             smps_modes[conf->smps_mode]);
1134         else
1135                 wiphy_debug(hw->wiphy,
1136                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1137                             __func__,
1138                             !!(conf->flags & IEEE80211_CONF_IDLE),
1139                             !!(conf->flags & IEEE80211_CONF_PS),
1140                             smps_modes[conf->smps_mode]);
1141
1142         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1143
1144         data->channel = conf->chandef.chan;
1145
1146         WARN_ON(data->channel && channels > 1);
1147
1148         data->power_level = conf->power_level;
1149         if (!data->started || !data->beacon_int)
1150                 tasklet_hrtimer_cancel(&data->beacon_timer);
1151         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1152                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1153                 u32 bcn_int = data->beacon_int;
1154                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1155
1156                 tasklet_hrtimer_start(&data->beacon_timer,
1157                                       ns_to_ktime(until_tbtt * 1000),
1158                                       HRTIMER_MODE_REL);
1159         }
1160
1161         return 0;
1162 }
1163
1164
1165 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1166                                             unsigned int changed_flags,
1167                                             unsigned int *total_flags,u64 multicast)
1168 {
1169         struct mac80211_hwsim_data *data = hw->priv;
1170
1171         wiphy_debug(hw->wiphy, "%s\n", __func__);
1172
1173         data->rx_filter = 0;
1174         if (*total_flags & FIF_PROMISC_IN_BSS)
1175                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1176         if (*total_flags & FIF_ALLMULTI)
1177                 data->rx_filter |= FIF_ALLMULTI;
1178
1179         *total_flags = data->rx_filter;
1180 }
1181
1182 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1183                                        struct ieee80211_vif *vif)
1184 {
1185         unsigned int *count = data;
1186         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1187
1188         if (vp->bcn_en)
1189                 (*count)++;
1190 }
1191
1192 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1193                                             struct ieee80211_vif *vif,
1194                                             struct ieee80211_bss_conf *info,
1195                                             u32 changed)
1196 {
1197         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1198         struct mac80211_hwsim_data *data = hw->priv;
1199
1200         hwsim_check_magic(vif);
1201
1202         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1203                     __func__, changed, vif->addr);
1204
1205         if (changed & BSS_CHANGED_BSSID) {
1206                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1207                             __func__, info->bssid);
1208                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1209         }
1210
1211         if (changed & BSS_CHANGED_ASSOC) {
1212                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1213                             info->assoc, info->aid);
1214                 vp->assoc = info->assoc;
1215                 vp->aid = info->aid;
1216         }
1217
1218         if (changed & BSS_CHANGED_BEACON_INT) {
1219                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1220                 data->beacon_int = info->beacon_int * 1024;
1221         }
1222
1223         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1224                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1225                 vp->bcn_en = info->enable_beacon;
1226                 if (data->started &&
1227                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1228                     info->enable_beacon) {
1229                         u64 tsf, until_tbtt;
1230                         u32 bcn_int;
1231                         if (WARN_ON(!data->beacon_int))
1232                                 data->beacon_int = 1000 * 1024;
1233                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1234                         bcn_int = data->beacon_int;
1235                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1236                         tasklet_hrtimer_start(&data->beacon_timer,
1237                                               ns_to_ktime(until_tbtt * 1000),
1238                                               HRTIMER_MODE_REL);
1239                 } else if (!info->enable_beacon) {
1240                         unsigned int count = 0;
1241                         ieee80211_iterate_active_interfaces_atomic(
1242                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1243                                 mac80211_hwsim_bcn_en_iter, &count);
1244                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1245                                     count);
1246                         if (count == 0)
1247                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1248                 }
1249         }
1250
1251         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1252                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1253                             info->use_cts_prot);
1254         }
1255
1256         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1257                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1258                             info->use_short_preamble);
1259         }
1260
1261         if (changed & BSS_CHANGED_ERP_SLOT) {
1262                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1263         }
1264
1265         if (changed & BSS_CHANGED_HT) {
1266                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1267                             info->ht_operation_mode);
1268         }
1269
1270         if (changed & BSS_CHANGED_BASIC_RATES) {
1271                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1272                             (unsigned long long) info->basic_rates);
1273         }
1274
1275         if (changed & BSS_CHANGED_TXPOWER)
1276                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1277 }
1278
1279 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1280                                   struct ieee80211_vif *vif,
1281                                   struct ieee80211_sta *sta)
1282 {
1283         hwsim_check_magic(vif);
1284         hwsim_set_sta_magic(sta);
1285
1286         return 0;
1287 }
1288
1289 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1290                                      struct ieee80211_vif *vif,
1291                                      struct ieee80211_sta *sta)
1292 {
1293         hwsim_check_magic(vif);
1294         hwsim_clear_sta_magic(sta);
1295
1296         return 0;
1297 }
1298
1299 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1300                                       struct ieee80211_vif *vif,
1301                                       enum sta_notify_cmd cmd,
1302                                       struct ieee80211_sta *sta)
1303 {
1304         hwsim_check_magic(vif);
1305
1306         switch (cmd) {
1307         case STA_NOTIFY_SLEEP:
1308         case STA_NOTIFY_AWAKE:
1309                 /* TODO: make good use of these flags */
1310                 break;
1311         default:
1312                 WARN(1, "Invalid sta notify: %d\n", cmd);
1313                 break;
1314         }
1315 }
1316
1317 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1318                                   struct ieee80211_sta *sta,
1319                                   bool set)
1320 {
1321         hwsim_check_sta_magic(sta);
1322         return 0;
1323 }
1324
1325 static int mac80211_hwsim_conf_tx(
1326         struct ieee80211_hw *hw,
1327         struct ieee80211_vif *vif, u16 queue,
1328         const struct ieee80211_tx_queue_params *params)
1329 {
1330         wiphy_debug(hw->wiphy,
1331                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1332                     __func__, queue,
1333                     params->txop, params->cw_min,
1334                     params->cw_max, params->aifs);
1335         return 0;
1336 }
1337
1338 static int mac80211_hwsim_get_survey(
1339         struct ieee80211_hw *hw, int idx,
1340         struct survey_info *survey)
1341 {
1342         struct ieee80211_conf *conf = &hw->conf;
1343
1344         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1345
1346         if (idx != 0)
1347                 return -ENOENT;
1348
1349         /* Current channel */
1350         survey->channel = conf->chandef.chan;
1351
1352         /*
1353          * Magically conjured noise level --- this is only ok for simulated hardware.
1354          *
1355          * A real driver which cannot determine the real channel noise MUST NOT
1356          * report any noise, especially not a magically conjured one :-)
1357          */
1358         survey->filled = SURVEY_INFO_NOISE_DBM;
1359         survey->noise = -92;
1360
1361         return 0;
1362 }
1363
1364 #ifdef CONFIG_NL80211_TESTMODE
1365 /*
1366  * This section contains example code for using netlink
1367  * attributes with the testmode command in nl80211.
1368  */
1369
1370 /* These enums need to be kept in sync with userspace */
1371 enum hwsim_testmode_attr {
1372         __HWSIM_TM_ATTR_INVALID = 0,
1373         HWSIM_TM_ATTR_CMD       = 1,
1374         HWSIM_TM_ATTR_PS        = 2,
1375
1376         /* keep last */
1377         __HWSIM_TM_ATTR_AFTER_LAST,
1378         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1379 };
1380
1381 enum hwsim_testmode_cmd {
1382         HWSIM_TM_CMD_SET_PS             = 0,
1383         HWSIM_TM_CMD_GET_PS             = 1,
1384         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1385         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1386 };
1387
1388 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1389         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1390         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1391 };
1392
1393 static int hwsim_fops_ps_write(void *dat, u64 val);
1394
1395 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1396                                        struct ieee80211_vif *vif,
1397                                        void *data, int len)
1398 {
1399         struct mac80211_hwsim_data *hwsim = hw->priv;
1400         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1401         struct sk_buff *skb;
1402         int err, ps;
1403
1404         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1405                         hwsim_testmode_policy);
1406         if (err)
1407                 return err;
1408
1409         if (!tb[HWSIM_TM_ATTR_CMD])
1410                 return -EINVAL;
1411
1412         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1413         case HWSIM_TM_CMD_SET_PS:
1414                 if (!tb[HWSIM_TM_ATTR_PS])
1415                         return -EINVAL;
1416                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1417                 return hwsim_fops_ps_write(hwsim, ps);
1418         case HWSIM_TM_CMD_GET_PS:
1419                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1420                                                 nla_total_size(sizeof(u32)));
1421                 if (!skb)
1422                         return -ENOMEM;
1423                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1424                         goto nla_put_failure;
1425                 return cfg80211_testmode_reply(skb);
1426         case HWSIM_TM_CMD_STOP_QUEUES:
1427                 ieee80211_stop_queues(hw);
1428                 return 0;
1429         case HWSIM_TM_CMD_WAKE_QUEUES:
1430                 ieee80211_wake_queues(hw);
1431                 return 0;
1432         default:
1433                 return -EOPNOTSUPP;
1434         }
1435
1436  nla_put_failure:
1437         kfree_skb(skb);
1438         return -ENOBUFS;
1439 }
1440 #endif
1441
1442 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1443                                        struct ieee80211_vif *vif,
1444                                        enum ieee80211_ampdu_mlme_action action,
1445                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1446                                        u8 buf_size)
1447 {
1448         switch (action) {
1449         case IEEE80211_AMPDU_TX_START:
1450                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1451                 break;
1452         case IEEE80211_AMPDU_TX_STOP_CONT:
1453         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1454         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1455                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1456                 break;
1457         case IEEE80211_AMPDU_TX_OPERATIONAL:
1458                 break;
1459         case IEEE80211_AMPDU_RX_START:
1460         case IEEE80211_AMPDU_RX_STOP:
1461                 break;
1462         default:
1463                 return -EOPNOTSUPP;
1464         }
1465
1466         return 0;
1467 }
1468
1469 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1470 {
1471         /* Not implemented, queues only on kernel side */
1472 }
1473
1474 static void hw_scan_work(struct work_struct *work)
1475 {
1476         struct mac80211_hwsim_data *hwsim =
1477                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1478         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1479         int dwell, i;
1480
1481         mutex_lock(&hwsim->mutex);
1482         if (hwsim->scan_chan_idx >= req->n_channels) {
1483                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1484                 ieee80211_scan_completed(hwsim->hw, false);
1485                 hwsim->hw_scan_request = NULL;
1486                 hwsim->hw_scan_vif = NULL;
1487                 hwsim->tmp_chan = NULL;
1488                 mutex_unlock(&hwsim->mutex);
1489                 return;
1490         }
1491
1492         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1493                     req->channels[hwsim->scan_chan_idx]->center_freq);
1494
1495         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1496         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
1497             !req->n_ssids) {
1498                 dwell = 120;
1499         } else {
1500                 dwell = 30;
1501                 /* send probes */
1502                 for (i = 0; i < req->n_ssids; i++) {
1503                         struct sk_buff *probe;
1504
1505                         probe = ieee80211_probereq_get(hwsim->hw,
1506                                                        hwsim->hw_scan_vif,
1507                                                        req->ssids[i].ssid,
1508                                                        req->ssids[i].ssid_len,
1509                                                        req->ie_len);
1510                         if (!probe)
1511                                 continue;
1512
1513                         if (req->ie_len)
1514                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1515                                        req->ie_len);
1516
1517                         local_bh_disable();
1518                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1519                                                 hwsim->tmp_chan);
1520                         local_bh_enable();
1521                 }
1522         }
1523         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1524                                      msecs_to_jiffies(dwell));
1525         hwsim->scan_chan_idx++;
1526         mutex_unlock(&hwsim->mutex);
1527 }
1528
1529 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1530                                   struct ieee80211_vif *vif,
1531                                   struct cfg80211_scan_request *req)
1532 {
1533         struct mac80211_hwsim_data *hwsim = hw->priv;
1534
1535         mutex_lock(&hwsim->mutex);
1536         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1537                 mutex_unlock(&hwsim->mutex);
1538                 return -EBUSY;
1539         }
1540         hwsim->hw_scan_request = req;
1541         hwsim->hw_scan_vif = vif;
1542         hwsim->scan_chan_idx = 0;
1543         mutex_unlock(&hwsim->mutex);
1544
1545         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1546
1547         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1548
1549         return 0;
1550 }
1551
1552 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1553                                           struct ieee80211_vif *vif)
1554 {
1555         struct mac80211_hwsim_data *hwsim = hw->priv;
1556
1557         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1558
1559         cancel_delayed_work_sync(&hwsim->hw_scan);
1560
1561         mutex_lock(&hwsim->mutex);
1562         ieee80211_scan_completed(hwsim->hw, true);
1563         hwsim->tmp_chan = NULL;
1564         hwsim->hw_scan_request = NULL;
1565         hwsim->hw_scan_vif = NULL;
1566         mutex_unlock(&hwsim->mutex);
1567 }
1568
1569 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1570 {
1571         struct mac80211_hwsim_data *hwsim = hw->priv;
1572
1573         mutex_lock(&hwsim->mutex);
1574
1575         if (hwsim->scanning) {
1576                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1577                 goto out;
1578         }
1579
1580         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1581         hwsim->scanning = true;
1582
1583 out:
1584         mutex_unlock(&hwsim->mutex);
1585 }
1586
1587 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1588 {
1589         struct mac80211_hwsim_data *hwsim = hw->priv;
1590
1591         mutex_lock(&hwsim->mutex);
1592
1593         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1594         hwsim->scanning = false;
1595
1596         mutex_unlock(&hwsim->mutex);
1597 }
1598
1599 static void hw_roc_done(struct work_struct *work)
1600 {
1601         struct mac80211_hwsim_data *hwsim =
1602                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1603
1604         mutex_lock(&hwsim->mutex);
1605         ieee80211_remain_on_channel_expired(hwsim->hw);
1606         hwsim->tmp_chan = NULL;
1607         mutex_unlock(&hwsim->mutex);
1608
1609         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1610 }
1611
1612 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1613                               struct ieee80211_vif *vif,
1614                               struct ieee80211_channel *chan,
1615                               int duration,
1616                               enum ieee80211_roc_type type)
1617 {
1618         struct mac80211_hwsim_data *hwsim = hw->priv;
1619
1620         mutex_lock(&hwsim->mutex);
1621         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1622                 mutex_unlock(&hwsim->mutex);
1623                 return -EBUSY;
1624         }
1625
1626         hwsim->tmp_chan = chan;
1627         mutex_unlock(&hwsim->mutex);
1628
1629         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1630                     chan->center_freq, duration);
1631
1632         ieee80211_ready_on_channel(hw);
1633
1634         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1635                                      msecs_to_jiffies(duration));
1636         return 0;
1637 }
1638
1639 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1640 {
1641         struct mac80211_hwsim_data *hwsim = hw->priv;
1642
1643         cancel_delayed_work_sync(&hwsim->roc_done);
1644
1645         mutex_lock(&hwsim->mutex);
1646         hwsim->tmp_chan = NULL;
1647         mutex_unlock(&hwsim->mutex);
1648
1649         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1650
1651         return 0;
1652 }
1653
1654 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1655                                       struct ieee80211_chanctx_conf *ctx)
1656 {
1657         hwsim_set_chanctx_magic(ctx);
1658         wiphy_debug(hw->wiphy,
1659                     "add 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         return 0;
1663 }
1664
1665 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1666                                           struct ieee80211_chanctx_conf *ctx)
1667 {
1668         wiphy_debug(hw->wiphy,
1669                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1670                     ctx->def.chan->center_freq, ctx->def.width,
1671                     ctx->def.center_freq1, ctx->def.center_freq2);
1672         hwsim_check_chanctx_magic(ctx);
1673         hwsim_clear_chanctx_magic(ctx);
1674 }
1675
1676 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1677                                           struct ieee80211_chanctx_conf *ctx,
1678                                           u32 changed)
1679 {
1680         hwsim_check_chanctx_magic(ctx);
1681         wiphy_debug(hw->wiphy,
1682                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1683                     ctx->def.chan->center_freq, ctx->def.width,
1684                     ctx->def.center_freq1, ctx->def.center_freq2);
1685 }
1686
1687 static int mac80211_hwsim_assign_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         return 0;
1695 }
1696
1697 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1698                                                 struct ieee80211_vif *vif,
1699                                                 struct ieee80211_chanctx_conf *ctx)
1700 {
1701         hwsim_check_magic(vif);
1702         hwsim_check_chanctx_magic(ctx);
1703 }
1704
1705 static struct ieee80211_ops mac80211_hwsim_ops =
1706 {
1707         .tx = mac80211_hwsim_tx,
1708         .start = mac80211_hwsim_start,
1709         .stop = mac80211_hwsim_stop,
1710         .add_interface = mac80211_hwsim_add_interface,
1711         .change_interface = mac80211_hwsim_change_interface,
1712         .remove_interface = mac80211_hwsim_remove_interface,
1713         .config = mac80211_hwsim_config,
1714         .configure_filter = mac80211_hwsim_configure_filter,
1715         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1716         .sta_add = mac80211_hwsim_sta_add,
1717         .sta_remove = mac80211_hwsim_sta_remove,
1718         .sta_notify = mac80211_hwsim_sta_notify,
1719         .set_tim = mac80211_hwsim_set_tim,
1720         .conf_tx = mac80211_hwsim_conf_tx,
1721         .get_survey = mac80211_hwsim_get_survey,
1722         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1723         .ampdu_action = mac80211_hwsim_ampdu_action,
1724         .sw_scan_start = mac80211_hwsim_sw_scan,
1725         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1726         .flush = mac80211_hwsim_flush,
1727         .get_tsf = mac80211_hwsim_get_tsf,
1728         .set_tsf = mac80211_hwsim_set_tsf,
1729 };
1730
1731
1732 static void mac80211_hwsim_free(void)
1733 {
1734         struct list_head tmplist, *i, *tmp;
1735         struct mac80211_hwsim_data *data, *tmpdata;
1736
1737         INIT_LIST_HEAD(&tmplist);
1738
1739         spin_lock_bh(&hwsim_radio_lock);
1740         list_for_each_safe(i, tmp, &hwsim_radios)
1741                 list_move(i, &tmplist);
1742         spin_unlock_bh(&hwsim_radio_lock);
1743
1744         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1745                 debugfs_remove(data->debugfs_group);
1746                 debugfs_remove(data->debugfs_ps);
1747                 debugfs_remove(data->debugfs);
1748                 ieee80211_unregister_hw(data->hw);
1749                 device_release_driver(data->dev);
1750                 device_unregister(data->dev);
1751                 ieee80211_free_hw(data->hw);
1752         }
1753         class_destroy(hwsim_class);
1754 }
1755
1756 static struct platform_driver mac80211_hwsim_driver = {
1757         .driver = {
1758                 .name = "mac80211_hwsim",
1759                 .owner = THIS_MODULE,
1760         },
1761 };
1762
1763 static const struct net_device_ops hwsim_netdev_ops = {
1764         .ndo_start_xmit         = hwsim_mon_xmit,
1765         .ndo_change_mtu         = eth_change_mtu,
1766         .ndo_set_mac_address    = eth_mac_addr,
1767         .ndo_validate_addr      = eth_validate_addr,
1768 };
1769
1770 static void hwsim_mon_setup(struct net_device *dev)
1771 {
1772         dev->netdev_ops = &hwsim_netdev_ops;
1773         dev->destructor = free_netdev;
1774         ether_setup(dev);
1775         dev->tx_queue_len = 0;
1776         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1777         memset(dev->dev_addr, 0, ETH_ALEN);
1778         dev->dev_addr[0] = 0x12;
1779 }
1780
1781
1782 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1783 {
1784         struct mac80211_hwsim_data *data = dat;
1785         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1786         struct sk_buff *skb;
1787         struct ieee80211_pspoll *pspoll;
1788
1789         if (!vp->assoc)
1790                 return;
1791
1792         wiphy_debug(data->hw->wiphy,
1793                     "%s: send PS-Poll to %pM for aid %d\n",
1794                     __func__, vp->bssid, vp->aid);
1795
1796         skb = dev_alloc_skb(sizeof(*pspoll));
1797         if (!skb)
1798                 return;
1799         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1800         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1801                                             IEEE80211_STYPE_PSPOLL |
1802                                             IEEE80211_FCTL_PM);
1803         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1804         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1805         memcpy(pspoll->ta, mac, ETH_ALEN);
1806
1807         rcu_read_lock();
1808         mac80211_hwsim_tx_frame(data->hw, skb,
1809                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1810         rcu_read_unlock();
1811 }
1812
1813 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1814                                 struct ieee80211_vif *vif, int ps)
1815 {
1816         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1817         struct sk_buff *skb;
1818         struct ieee80211_hdr *hdr;
1819
1820         if (!vp->assoc)
1821                 return;
1822
1823         wiphy_debug(data->hw->wiphy,
1824                     "%s: send data::nullfunc to %pM ps=%d\n",
1825                     __func__, vp->bssid, ps);
1826
1827         skb = dev_alloc_skb(sizeof(*hdr));
1828         if (!skb)
1829                 return;
1830         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1831         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1832                                          IEEE80211_STYPE_NULLFUNC |
1833                                          (ps ? IEEE80211_FCTL_PM : 0));
1834         hdr->duration_id = cpu_to_le16(0);
1835         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1836         memcpy(hdr->addr2, mac, ETH_ALEN);
1837         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1838
1839         rcu_read_lock();
1840         mac80211_hwsim_tx_frame(data->hw, skb,
1841                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1842         rcu_read_unlock();
1843 }
1844
1845
1846 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1847                                    struct ieee80211_vif *vif)
1848 {
1849         struct mac80211_hwsim_data *data = dat;
1850         hwsim_send_nullfunc(data, mac, vif, 1);
1851 }
1852
1853
1854 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1855                                       struct ieee80211_vif *vif)
1856 {
1857         struct mac80211_hwsim_data *data = dat;
1858         hwsim_send_nullfunc(data, mac, vif, 0);
1859 }
1860
1861
1862 static int hwsim_fops_ps_read(void *dat, u64 *val)
1863 {
1864         struct mac80211_hwsim_data *data = dat;
1865         *val = data->ps;
1866         return 0;
1867 }
1868
1869 static int hwsim_fops_ps_write(void *dat, u64 val)
1870 {
1871         struct mac80211_hwsim_data *data = dat;
1872         enum ps_mode old_ps;
1873
1874         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1875             val != PS_MANUAL_POLL)
1876                 return -EINVAL;
1877
1878         old_ps = data->ps;
1879         data->ps = val;
1880
1881         if (val == PS_MANUAL_POLL) {
1882                 ieee80211_iterate_active_interfaces(data->hw,
1883                                                     IEEE80211_IFACE_ITER_NORMAL,
1884                                                     hwsim_send_ps_poll, data);
1885                 data->ps_poll_pending = true;
1886         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1887                 ieee80211_iterate_active_interfaces(data->hw,
1888                                                     IEEE80211_IFACE_ITER_NORMAL,
1889                                                     hwsim_send_nullfunc_ps,
1890                                                     data);
1891         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1892                 ieee80211_iterate_active_interfaces(data->hw,
1893                                                     IEEE80211_IFACE_ITER_NORMAL,
1894                                                     hwsim_send_nullfunc_no_ps,
1895                                                     data);
1896         }
1897
1898         return 0;
1899 }
1900
1901 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1902                         "%llu\n");
1903
1904
1905 static int hwsim_fops_group_read(void *dat, u64 *val)
1906 {
1907         struct mac80211_hwsim_data *data = dat;
1908         *val = data->group;
1909         return 0;
1910 }
1911
1912 static int hwsim_fops_group_write(void *dat, u64 val)
1913 {
1914         struct mac80211_hwsim_data *data = dat;
1915         data->group = val;
1916         return 0;
1917 }
1918
1919 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1920                         hwsim_fops_group_read, hwsim_fops_group_write,
1921                         "%llx\n");
1922
1923 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1924                              struct mac_address *addr)
1925 {
1926         struct mac80211_hwsim_data *data;
1927         bool _found = false;
1928
1929         spin_lock_bh(&hwsim_radio_lock);
1930         list_for_each_entry(data, &hwsim_radios, list) {
1931                 if (memcmp(data->addresses[1].addr, addr,
1932                           sizeof(struct mac_address)) == 0) {
1933                         _found = true;
1934                         break;
1935                 }
1936         }
1937         spin_unlock_bh(&hwsim_radio_lock);
1938
1939         if (!_found)
1940                 return NULL;
1941
1942         return data;
1943 }
1944
1945 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1946                                            struct genl_info *info)
1947 {
1948
1949         struct ieee80211_hdr *hdr;
1950         struct mac80211_hwsim_data *data2;
1951         struct ieee80211_tx_info *txi;
1952         struct hwsim_tx_rate *tx_attempts;
1953         unsigned long ret_skb_ptr;
1954         struct sk_buff *skb, *tmp;
1955         struct mac_address *src;
1956         unsigned int hwsim_flags;
1957
1958         int i;
1959         bool found = false;
1960
1961         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1962            !info->attrs[HWSIM_ATTR_FLAGS] ||
1963            !info->attrs[HWSIM_ATTR_COOKIE] ||
1964            !info->attrs[HWSIM_ATTR_TX_INFO])
1965                 goto out;
1966
1967         src = (struct mac_address *)nla_data(
1968                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1969         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1970
1971         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1972
1973         data2 = get_hwsim_data_ref_from_addr(src);
1974
1975         if (data2 == NULL)
1976                 goto out;
1977
1978         /* look for the skb matching the cookie passed back from user */
1979         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1980                 if ((unsigned long)skb == ret_skb_ptr) {
1981                         skb_unlink(skb, &data2->pending);
1982                         found = true;
1983                         break;
1984                 }
1985         }
1986
1987         /* not found */
1988         if (!found)
1989                 goto out;
1990
1991         /* Tx info received because the frame was broadcasted on user space,
1992          so we get all the necessary info: tx attempts and skb control buff */
1993
1994         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1995                        info->attrs[HWSIM_ATTR_TX_INFO]);
1996
1997         /* now send back TX status */
1998         txi = IEEE80211_SKB_CB(skb);
1999
2000         ieee80211_tx_info_clear_status(txi);
2001
2002         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2003                 txi->status.rates[i].idx = tx_attempts[i].idx;
2004                 txi->status.rates[i].count = tx_attempts[i].count;
2005                 /*txi->status.rates[i].flags = 0;*/
2006         }
2007
2008         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2009
2010         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2011            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2012                 if (skb->len >= 16) {
2013                         hdr = (struct ieee80211_hdr *) skb->data;
2014                         mac80211_hwsim_monitor_ack(data2->channel,
2015                                                    hdr->addr2);
2016                 }
2017                 txi->flags |= IEEE80211_TX_STAT_ACK;
2018         }
2019         ieee80211_tx_status_irqsafe(data2->hw, skb);
2020         return 0;
2021 out:
2022         return -EINVAL;
2023
2024 }
2025
2026 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2027                                           struct genl_info *info)
2028 {
2029
2030         struct mac80211_hwsim_data *data2;
2031         struct ieee80211_rx_status rx_status;
2032         struct mac_address *dst;
2033         int frame_data_len;
2034         char *frame_data;
2035         struct sk_buff *skb = NULL;
2036
2037         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2038             !info->attrs[HWSIM_ATTR_FRAME] ||
2039             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2040             !info->attrs[HWSIM_ATTR_SIGNAL])
2041                 goto out;
2042
2043         dst = (struct mac_address *)nla_data(
2044                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2045
2046         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2047         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2048
2049         /* Allocate new skb here */
2050         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2051         if (skb == NULL)
2052                 goto err;
2053
2054         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
2055                 /* Copy the data */
2056                 memcpy(skb_put(skb, frame_data_len), frame_data,
2057                        frame_data_len);
2058         } else
2059                 goto err;
2060
2061         data2 = get_hwsim_data_ref_from_addr(dst);
2062
2063         if (data2 == NULL)
2064                 goto out;
2065
2066         /* check if radio is configured properly */
2067
2068         if (data2->idle || !data2->started)
2069                 goto out;
2070
2071         /*A frame is received from user space*/
2072         memset(&rx_status, 0, sizeof(rx_status));
2073         rx_status.freq = data2->channel->center_freq;
2074         rx_status.band = data2->channel->band;
2075         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2076         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2077
2078         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2079         ieee80211_rx_irqsafe(data2->hw, skb);
2080
2081         return 0;
2082 err:
2083         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2084         goto out;
2085 out:
2086         dev_kfree_skb(skb);
2087         return -EINVAL;
2088 }
2089
2090 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2091                                       struct genl_info *info)
2092 {
2093         if (info == NULL)
2094                 goto out;
2095
2096         wmediumd_portid = info->snd_portid;
2097
2098         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2099                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2100
2101         return 0;
2102 out:
2103         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2104         return -EINVAL;
2105 }
2106
2107 /* Generic Netlink operations array */
2108 static const struct genl_ops hwsim_ops[] = {
2109         {
2110                 .cmd = HWSIM_CMD_REGISTER,
2111                 .policy = hwsim_genl_policy,
2112                 .doit = hwsim_register_received_nl,
2113                 .flags = GENL_ADMIN_PERM,
2114         },
2115         {
2116                 .cmd = HWSIM_CMD_FRAME,
2117                 .policy = hwsim_genl_policy,
2118                 .doit = hwsim_cloned_frame_received_nl,
2119         },
2120         {
2121                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2122                 .policy = hwsim_genl_policy,
2123                 .doit = hwsim_tx_info_frame_received_nl,
2124         },
2125 };
2126
2127 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2128                                          unsigned long state,
2129                                          void *_notify)
2130 {
2131         struct netlink_notify *notify = _notify;
2132
2133         if (state != NETLINK_URELEASE)
2134                 return NOTIFY_DONE;
2135
2136         if (notify->portid == wmediumd_portid) {
2137                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2138                        " socket, switching to perfect channel medium\n");
2139                 wmediumd_portid = 0;
2140         }
2141         return NOTIFY_DONE;
2142
2143 }
2144
2145 static struct notifier_block hwsim_netlink_notifier = {
2146         .notifier_call = mac80211_hwsim_netlink_notify,
2147 };
2148
2149 static int hwsim_init_netlink(void)
2150 {
2151         int rc;
2152
2153         /* userspace test API hasn't been adjusted for multi-channel */
2154         if (channels > 1)
2155                 return 0;
2156
2157         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2158
2159         rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2160         if (rc)
2161                 goto failure;
2162
2163         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2164         if (rc)
2165                 goto failure;
2166
2167         return 0;
2168
2169 failure:
2170         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2171         return -EINVAL;
2172 }
2173
2174 static void hwsim_exit_netlink(void)
2175 {
2176         int ret;
2177
2178         /* userspace test API hasn't been adjusted for multi-channel */
2179         if (channels > 1)
2180                 return;
2181
2182         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2183         /* unregister the notifier */
2184         netlink_unregister_notifier(&hwsim_netlink_notifier);
2185         /* unregister the family */
2186         ret = genl_unregister_family(&hwsim_genl_family);
2187         if (ret)
2188                 printk(KERN_DEBUG "mac80211_hwsim: "
2189                        "unregister family %i\n", ret);
2190 }
2191
2192 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2193         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2194         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2195                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2196 #ifdef CONFIG_MAC80211_MESH
2197                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2198 #endif
2199                                  BIT(NL80211_IFTYPE_AP) |
2200                                  BIT(NL80211_IFTYPE_P2P_GO) },
2201         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2202 };
2203
2204 static struct ieee80211_iface_combination hwsim_if_comb = {
2205         .limits = hwsim_if_limits,
2206         .n_limits = ARRAY_SIZE(hwsim_if_limits),
2207         .max_interfaces = 2048,
2208         .num_different_channels = 1,
2209 };
2210
2211 static int __init init_mac80211_hwsim(void)
2212 {
2213         int i, err = 0;
2214         u8 addr[ETH_ALEN];
2215         struct mac80211_hwsim_data *data;
2216         struct ieee80211_hw *hw;
2217         enum ieee80211_band band;
2218
2219         if (radios < 1 || radios > 100)
2220                 return -EINVAL;
2221
2222         if (channels < 1)
2223                 return -EINVAL;
2224
2225         if (channels > 1) {
2226                 hwsim_if_comb.num_different_channels = channels;
2227                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2228                 mac80211_hwsim_ops.cancel_hw_scan =
2229                         mac80211_hwsim_cancel_hw_scan;
2230                 mac80211_hwsim_ops.sw_scan_start = NULL;
2231                 mac80211_hwsim_ops.sw_scan_complete = NULL;
2232                 mac80211_hwsim_ops.remain_on_channel =
2233                         mac80211_hwsim_roc;
2234                 mac80211_hwsim_ops.cancel_remain_on_channel =
2235                         mac80211_hwsim_croc;
2236                 mac80211_hwsim_ops.add_chanctx =
2237                         mac80211_hwsim_add_chanctx;
2238                 mac80211_hwsim_ops.remove_chanctx =
2239                         mac80211_hwsim_remove_chanctx;
2240                 mac80211_hwsim_ops.change_chanctx =
2241                         mac80211_hwsim_change_chanctx;
2242                 mac80211_hwsim_ops.assign_vif_chanctx =
2243                         mac80211_hwsim_assign_vif_chanctx;
2244                 mac80211_hwsim_ops.unassign_vif_chanctx =
2245                         mac80211_hwsim_unassign_vif_chanctx;
2246         }
2247
2248         spin_lock_init(&hwsim_radio_lock);
2249         INIT_LIST_HEAD(&hwsim_radios);
2250
2251         err = platform_driver_register(&mac80211_hwsim_driver);
2252         if (err)
2253                 return err;
2254
2255         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2256         if (IS_ERR(hwsim_class)) {
2257                 err = PTR_ERR(hwsim_class);
2258                 goto failed_unregister_driver;
2259         }
2260
2261         memset(addr, 0, ETH_ALEN);
2262         addr[0] = 0x02;
2263
2264         for (i = 0; i < radios; i++) {
2265                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2266                        i);
2267                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2268                 if (!hw) {
2269                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2270                                "failed\n");
2271                         err = -ENOMEM;
2272                         goto failed;
2273                 }
2274                 data = hw->priv;
2275                 data->hw = hw;
2276
2277                 data->dev = device_create(hwsim_class, NULL, 0, hw,
2278                                           "hwsim%d", i);
2279                 if (IS_ERR(data->dev)) {
2280                         printk(KERN_DEBUG
2281                                "mac80211_hwsim: device_create failed (%ld)\n",
2282                                PTR_ERR(data->dev));
2283                         err = -ENOMEM;
2284                         goto failed_drvdata;
2285                 }
2286                 data->dev->driver = &mac80211_hwsim_driver.driver;
2287                 err = device_bind_driver(data->dev);
2288                 if (err != 0) {
2289                         printk(KERN_DEBUG
2290                                "mac80211_hwsim: device_bind_driver failed (%d)\n",
2291                                err);
2292                         goto failed_hw;
2293                 }
2294
2295                 skb_queue_head_init(&data->pending);
2296
2297                 SET_IEEE80211_DEV(hw, data->dev);
2298                 addr[3] = i >> 8;
2299                 addr[4] = i;
2300                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2301                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2302                 data->addresses[1].addr[0] |= 0x40;
2303                 hw->wiphy->n_addresses = 2;
2304                 hw->wiphy->addresses = data->addresses;
2305
2306                 hw->wiphy->iface_combinations = &hwsim_if_comb;
2307                 hw->wiphy->n_iface_combinations = 1;
2308
2309                 if (channels > 1) {
2310                         hw->wiphy->max_scan_ssids = 255;
2311                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2312                         hw->wiphy->max_remain_on_channel_duration = 1000;
2313                 }
2314
2315                 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2316                 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2317
2318                 hw->channel_change_time = 1;
2319                 hw->queues = 5;
2320                 hw->offchannel_tx_hw_queue = 4;
2321                 hw->wiphy->interface_modes =
2322                         BIT(NL80211_IFTYPE_STATION) |
2323                         BIT(NL80211_IFTYPE_AP) |
2324                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
2325                         BIT(NL80211_IFTYPE_P2P_GO) |
2326                         BIT(NL80211_IFTYPE_ADHOC) |
2327                         BIT(NL80211_IFTYPE_MESH_POINT) |
2328                         BIT(NL80211_IFTYPE_P2P_DEVICE);
2329
2330                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2331                             IEEE80211_HW_SIGNAL_DBM |
2332                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2333                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2334                             IEEE80211_HW_AMPDU_AGGREGATION |
2335                             IEEE80211_HW_WANT_MONITOR_VIF |
2336                             IEEE80211_HW_QUEUE_CONTROL;
2337                 if (rctbl)
2338                         hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2339
2340                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2341                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2342                                     WIPHY_FLAG_AP_UAPSD;
2343                 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
2344
2345                 /* ask mac80211 to reserve space for magic */
2346                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2347                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2348                 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2349
2350                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2351                         sizeof(hwsim_channels_2ghz));
2352                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2353                         sizeof(hwsim_channels_5ghz));
2354                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2355
2356                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2357                         struct ieee80211_supported_band *sband = &data->bands[band];
2358                         switch (band) {
2359                         case IEEE80211_BAND_2GHZ:
2360                                 sband->channels = data->channels_2ghz;
2361                                 sband->n_channels =
2362                                         ARRAY_SIZE(hwsim_channels_2ghz);
2363                                 sband->bitrates = data->rates;
2364                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2365                                 break;
2366                         case IEEE80211_BAND_5GHZ:
2367                                 sband->channels = data->channels_5ghz;
2368                                 sband->n_channels =
2369                                         ARRAY_SIZE(hwsim_channels_5ghz);
2370                                 sband->bitrates = data->rates + 4;
2371                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2372                                 break;
2373                         default:
2374                                 continue;
2375                         }
2376
2377                         sband->ht_cap.ht_supported = true;
2378                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2379                                 IEEE80211_HT_CAP_GRN_FLD |
2380                                 IEEE80211_HT_CAP_SGI_40 |
2381                                 IEEE80211_HT_CAP_DSSSCCK40;
2382                         sband->ht_cap.ampdu_factor = 0x3;
2383                         sband->ht_cap.ampdu_density = 0x6;
2384                         memset(&sband->ht_cap.mcs, 0,
2385                                sizeof(sband->ht_cap.mcs));
2386                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
2387                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
2388                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2389
2390                         hw->wiphy->bands[band] = sband;
2391
2392                         sband->vht_cap.vht_supported = true;
2393                         sband->vht_cap.cap =
2394                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2395                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2396                                 IEEE80211_VHT_CAP_RXLDPC |
2397                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2398                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2399                                 IEEE80211_VHT_CAP_TXSTBC |
2400                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2401                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2402                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2403                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2404                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2405                         sband->vht_cap.vht_mcs.rx_mcs_map =
2406                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2407                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2408                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2409                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2410                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2411                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2412                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2413                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2414                         sband->vht_cap.vht_mcs.tx_mcs_map =
2415                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2416                 }
2417                 /* By default all radios are belonging to the first group */
2418                 data->group = 1;
2419                 mutex_init(&data->mutex);
2420
2421                 /* Enable frame retransmissions for lossy channels */
2422                 hw->max_rates = 4;
2423                 hw->max_rate_tries = 11;
2424
2425                 /* Work to be done prior to ieee80211_register_hw() */
2426                 switch (regtest) {
2427                 case HWSIM_REGTEST_DISABLED:
2428                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2429                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2430                 case HWSIM_REGTEST_DIFF_COUNTRY:
2431                         /*
2432                          * Nothing to be done for driver regulatory domain
2433                          * hints prior to ieee80211_register_hw()
2434                          */
2435                         break;
2436                 case HWSIM_REGTEST_WORLD_ROAM:
2437                         if (i == 0) {
2438                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2439                                 wiphy_apply_custom_regulatory(hw->wiphy,
2440                                         &hwsim_world_regdom_custom_01);
2441                         }
2442                         break;
2443                 case HWSIM_REGTEST_CUSTOM_WORLD:
2444                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2445                         wiphy_apply_custom_regulatory(hw->wiphy,
2446                                 &hwsim_world_regdom_custom_01);
2447                         break;
2448                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2449                         if (i == 0) {
2450                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2451                                 wiphy_apply_custom_regulatory(hw->wiphy,
2452                                         &hwsim_world_regdom_custom_01);
2453                         } else if (i == 1) {
2454                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2455                                 wiphy_apply_custom_regulatory(hw->wiphy,
2456                                         &hwsim_world_regdom_custom_02);
2457                         }
2458                         break;
2459                 case HWSIM_REGTEST_STRICT_ALL:
2460                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2461                         break;
2462                 case HWSIM_REGTEST_STRICT_FOLLOW:
2463                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2464                         if (i == 0)
2465                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2466                         break;
2467                 case HWSIM_REGTEST_ALL:
2468                         if (i == 0) {
2469                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2470                                 wiphy_apply_custom_regulatory(hw->wiphy,
2471                                         &hwsim_world_regdom_custom_01);
2472                         } else if (i == 1) {
2473                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2474                                 wiphy_apply_custom_regulatory(hw->wiphy,
2475                                         &hwsim_world_regdom_custom_02);
2476                         } else if (i == 4)
2477                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2478                         break;
2479                 default:
2480                         break;
2481                 }
2482
2483                 /* give the regulatory workqueue a chance to run */
2484                 if (regtest)
2485                         schedule_timeout_interruptible(1);
2486                 err = ieee80211_register_hw(hw);
2487                 if (err < 0) {
2488                         printk(KERN_DEBUG "mac80211_hwsim: "
2489                                "ieee80211_register_hw failed (%d)\n", err);
2490                         goto failed_hw;
2491                 }
2492
2493                 /* Work to be done after to ieee80211_register_hw() */
2494                 switch (regtest) {
2495                 case HWSIM_REGTEST_WORLD_ROAM:
2496                 case HWSIM_REGTEST_DISABLED:
2497                         break;
2498                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2499                         if (!i)
2500                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2501                         break;
2502                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2503                 case HWSIM_REGTEST_STRICT_ALL:
2504                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2505                         break;
2506                 case HWSIM_REGTEST_DIFF_COUNTRY:
2507                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2508                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2509                         break;
2510                 case HWSIM_REGTEST_CUSTOM_WORLD:
2511                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2512                         /*
2513                          * Nothing to be done for custom world regulatory
2514                          * domains after to ieee80211_register_hw
2515                          */
2516                         break;
2517                 case HWSIM_REGTEST_STRICT_FOLLOW:
2518                         if (i == 0)
2519                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2520                         break;
2521                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2522                         if (i == 0)
2523                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2524                         else if (i == 1)
2525                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2526                         break;
2527                 case HWSIM_REGTEST_ALL:
2528                         if (i == 2)
2529                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2530                         else if (i == 3)
2531                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2532                         else if (i == 4)
2533                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2534                         break;
2535                 default:
2536                         break;
2537                 }
2538
2539                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2540                             hw->wiphy->perm_addr);
2541
2542                 data->debugfs = debugfs_create_dir("hwsim",
2543                                                    hw->wiphy->debugfsdir);
2544                 data->debugfs_ps = debugfs_create_file("ps", 0666,
2545                                                        data->debugfs, data,
2546                                                        &hwsim_fops_ps);
2547                 data->debugfs_group = debugfs_create_file("group", 0666,
2548                                                         data->debugfs, data,
2549                                                         &hwsim_fops_group);
2550
2551                 tasklet_hrtimer_init(&data->beacon_timer,
2552                                      mac80211_hwsim_beacon,
2553                                      CLOCK_REALTIME, HRTIMER_MODE_ABS);
2554
2555                 list_add_tail(&data->list, &hwsim_radios);
2556         }
2557
2558         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2559         if (hwsim_mon == NULL) {
2560                 err = -ENOMEM;
2561                 goto failed;
2562         }
2563
2564         rtnl_lock();
2565
2566         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2567         if (err < 0)
2568                 goto failed_mon;
2569
2570
2571         err = register_netdevice(hwsim_mon);
2572         if (err < 0)
2573                 goto failed_mon;
2574
2575         rtnl_unlock();
2576
2577         err = hwsim_init_netlink();
2578         if (err < 0)
2579                 goto failed_nl;
2580
2581         return 0;
2582
2583 failed_nl:
2584         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2585         return err;
2586
2587 failed_mon:
2588         rtnl_unlock();
2589         free_netdev(hwsim_mon);
2590         mac80211_hwsim_free();
2591         return err;
2592
2593 failed_hw:
2594         device_unregister(data->dev);
2595 failed_drvdata:
2596         ieee80211_free_hw(hw);
2597 failed:
2598         mac80211_hwsim_free();
2599 failed_unregister_driver:
2600         platform_driver_unregister(&mac80211_hwsim_driver);
2601         return err;
2602 }
2603 module_init(init_mac80211_hwsim);
2604
2605 static void __exit exit_mac80211_hwsim(void)
2606 {
2607         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2608
2609         hwsim_exit_netlink();
2610
2611         mac80211_hwsim_free();
2612         unregister_netdev(hwsim_mon);
2613         platform_driver_unregister(&mac80211_hwsim_driver);
2614 }
2615 module_exit(exit_mac80211_hwsim);