Pileus Git - ~andy/linux/blob - drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include "mac80211_hwsim.h"
  34
  35 #define WARN_QUEUE 100
  36 #define MAX_QUEUE 200
  37
  38 MODULE_AUTHOR("Jouni Malinen");
  39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  40 MODULE_LICENSE("GPL");
  41
  42 static u32 wmediumd_portid;
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 /**
  61  * enum hwsim_regtest - the type of regulatory tests we offer
  62  *
  63  * These are the different values you can use for the regtest
  64  * module parameter. This is useful to help test world roaming
  65  * and the driver regulatory_hint() call and combinations of these.
  66  * If you want to do specific alpha2 regulatory domain tests simply
  67  * use the userspace regulatory request as that will be respected as
  68  * well without the need of this module parameter. This is designed
  69  * only for testing the driver regulatory request, world roaming
  70  * and all possible combinations.
  71  *
  72  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  73  *      this is the default value.
  74  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  75  *      hint, only one driver regulatory hint will be sent as such the
  76  *      secondary radios are expected to follow.
  77  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  78  *      request with all radios reporting the same regulatory domain.
  79  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  80  *      different regulatory domains requests. Expected behaviour is for
  81  *      an intersection to occur but each device will still use their
  82  *      respective regulatory requested domains. Subsequent radios will
  83  *      use the resulting intersection.
  84  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  85  *      this by using a custom beacon-capable regulatory domain for the first
  86  *      radio. All other device world roam.
  87  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  88  *      domain requests. All radios will adhere to this custom world regulatory
  89  *      domain.
  90  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  91  *      domain requests. The first radio will adhere to the first custom world
  92  *      regulatory domain, the second one to the second custom world regulatory
  93  *      domain. All other devices will world roam.
  94  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  95  *      settings, only the first radio will send a regulatory domain request
  96  *      and use strict settings. The rest of the radios are expected to follow.
  97  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  98  *      settings. All radios will adhere to this.
  99  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 100  *      domain settings, combined with secondary driver regulatory domain
 101  *      settings. The first radio will get a strict regulatory domain setting
 102  *      using the first driver regulatory request and the second radio will use
 103  *      non-strict settings using the second driver regulatory request. All
 104  *      other devices should follow the intersection created between the
 105  *      first two.
 106  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 107  *      at least 6 radios for a complete test. We will test in this order:
 108  *      1 - driver custom world regulatory domain
 109  *      2 - second custom world regulatory domain
 110  *      3 - first driver regulatory domain request
 111  *      4 - second driver regulatory domain request
 112  *      5 - strict regulatory domain settings using the third driver regulatory
 113  *          domain request
 114  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 115  *                 regulatory requests.
 116  */
 117 enum hwsim_regtest {
 118         HWSIM_REGTEST_DISABLED = 0,
 119         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 120         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 121         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 122         HWSIM_REGTEST_WORLD_ROAM = 4,
 123         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 124         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 125         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 126         HWSIM_REGTEST_STRICT_ALL = 8,
 127         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 128         HWSIM_REGTEST_ALL = 10,
 129 };
 130
 131 /* Set to one of the HWSIM_REGTEST_* values above */
 132 static int regtest = HWSIM_REGTEST_DISABLED;
 133 module_param(regtest, int, 0444);
 134 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 135
 136 static const char *hwsim_alpha2s[] = {
 137         "FI",
 138         "AL",
 139         "US",
 140         "DE",
 141         "JP",
 142         "AL",
 143 };
 144
 145 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 146         .n_reg_rules = 4,
 147         .alpha2 =  "99",
 148         .reg_rules = {
 149                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 150                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 151                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 152                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 153         }
 154 };
 155
 156 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 157         .n_reg_rules = 2,
 158         .alpha2 =  "99",
 159         .reg_rules = {
 160                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 161                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 162                          NL80211_RRF_NO_IR),
 163         }
 164 };
 165
 166 struct hwsim_vif_priv {
 167         u32 magic;
 168         u8 bssid[ETH_ALEN];
 169         bool assoc;
 170         bool bcn_en;
 171         u16 aid;
 172 };
 173
 174 #define HWSIM_VIF_MAGIC 0x69537748
 175
 176 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 177 {
 178         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 179         WARN(vp->magic != HWSIM_VIF_MAGIC,
 180              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 181              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 182 }
 183
 184 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 185 {
 186         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 187         vp->magic = HWSIM_VIF_MAGIC;
 188 }
 189
 190 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 191 {
 192         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 193         vp->magic = 0;
 194 }
 195
 196 struct hwsim_sta_priv {
 197         u32 magic;
 198 };
 199
 200 #define HWSIM_STA_MAGIC 0x6d537749
 201
 202 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 203 {
 204         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 205         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 206 }
 207
 208 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 209 {
 210         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 211         sp->magic = HWSIM_STA_MAGIC;
 212 }
 213
 214 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 215 {
 216         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 217         sp->magic = 0;
 218 }
 219
 220 struct hwsim_chanctx_priv {
 221         u32 magic;
 222 };
 223
 224 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 225
 226 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 227 {
 228         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 229         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 230 }
 231
 232 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 233 {
 234         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 235         cp->magic = HWSIM_CHANCTX_MAGIC;
 236 }
 237
 238 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 239 {
 240         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 241         cp->magic = 0;
 242 }
 243
 244 static struct class *hwsim_class;
 245
 246 static struct net_device *hwsim_mon; /* global monitor netdev */
 247
 248 #define CHAN2G(_freq)  { \
 249         .band = IEEE80211_BAND_2GHZ, \
 250         .center_freq = (_freq), \
 251         .hw_value = (_freq), \
 252         .max_power = 20, \
 253 }
 254
 255 #define CHAN5G(_freq) { \
 256         .band = IEEE80211_BAND_5GHZ, \
 257         .center_freq = (_freq), \
 258         .hw_value = (_freq), \
 259         .max_power = 20, \
 260 }
 261
 262 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 263         CHAN2G(2412), /* Channel 1 */
 264         CHAN2G(2417), /* Channel 2 */
 265         CHAN2G(2422), /* Channel 3 */
 266         CHAN2G(2427), /* Channel 4 */
 267         CHAN2G(2432), /* Channel 5 */
 268         CHAN2G(2437), /* Channel 6 */
 269         CHAN2G(2442), /* Channel 7 */
 270         CHAN2G(2447), /* Channel 8 */
 271         CHAN2G(2452), /* Channel 9 */
 272         CHAN2G(2457), /* Channel 10 */
 273         CHAN2G(2462), /* Channel 11 */
 274         CHAN2G(2467), /* Channel 12 */
 275         CHAN2G(2472), /* Channel 13 */
 276         CHAN2G(2484), /* Channel 14 */
 277 };
 278
 279 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 280         CHAN5G(5180), /* Channel 36 */
 281         CHAN5G(5200), /* Channel 40 */
 282         CHAN5G(5220), /* Channel 44 */
 283         CHAN5G(5240), /* Channel 48 */
 284
 285         CHAN5G(5260), /* Channel 52 */
 286         CHAN5G(5280), /* Channel 56 */
 287         CHAN5G(5300), /* Channel 60 */
 288         CHAN5G(5320), /* Channel 64 */
 289
 290         CHAN5G(5500), /* Channel 100 */
 291         CHAN5G(5520), /* Channel 104 */
 292         CHAN5G(5540), /* Channel 108 */
 293         CHAN5G(5560), /* Channel 112 */
 294         CHAN5G(5580), /* Channel 116 */
 295         CHAN5G(5600), /* Channel 120 */
 296         CHAN5G(5620), /* Channel 124 */
 297         CHAN5G(5640), /* Channel 128 */
 298         CHAN5G(5660), /* Channel 132 */
 299         CHAN5G(5680), /* Channel 136 */
 300         CHAN5G(5700), /* Channel 140 */
 301
 302         CHAN5G(5745), /* Channel 149 */
 303         CHAN5G(5765), /* Channel 153 */
 304         CHAN5G(5785), /* Channel 157 */
 305         CHAN5G(5805), /* Channel 161 */
 306         CHAN5G(5825), /* Channel 165 */
 307 };
 308
 309 static const struct ieee80211_rate hwsim_rates[] = {
 310         { .bitrate = 10 },
 311         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 312         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 313         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 314         { .bitrate = 60 },
 315         { .bitrate = 90 },
 316         { .bitrate = 120 },
 317         { .bitrate = 180 },
 318         { .bitrate = 240 },
 319         { .bitrate = 360 },
 320         { .bitrate = 480 },
 321         { .bitrate = 540 }
 322 };
 323
 324 static spinlock_t hwsim_radio_lock;
 325 static struct list_head hwsim_radios;
 326
 327 struct mac80211_hwsim_data {
 328         struct list_head list;
 329         struct ieee80211_hw *hw;
 330         struct device *dev;
 331         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 332         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 333         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 334         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 335
 336         struct mac_address addresses[2];
 337
 338         struct ieee80211_channel *tmp_chan;
 339         struct delayed_work roc_done;
 340         struct delayed_work hw_scan;
 341         struct cfg80211_scan_request *hw_scan_request;
 342         struct ieee80211_vif *hw_scan_vif;
 343         int scan_chan_idx;
 344
 345         struct ieee80211_channel *channel;
 346         u64 beacon_int  /* beacon interval in us */;
 347         unsigned int rx_filter;
 348         bool started, idle, scanning;
 349         struct mutex mutex;
 350         struct tasklet_hrtimer beacon_timer;
 351         enum ps_mode {
 352                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 353         } ps;
 354         bool ps_poll_pending;
 355         struct dentry *debugfs;
 356
 357         struct sk_buff_head pending;    /* packets pending */
 358         /*
 359          * Only radios in the same group can communicate together (the
 360          * channel has to match too). Each bit represents a group. A
 361          * radio can be in more then one group.
 362          */
 363         u64 group;
 364
 365         int power_level;
 366
 367         /* difference between this hw's clock and the real clock, in usecs */
 368         s64 tsf_offset;
 369         s64 bcn_delta;
 370         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 371         u64 abs_bcn_ts;
 372 };
 373
 374
 375 struct hwsim_radiotap_hdr {
 376         struct ieee80211_radiotap_header hdr;
 377         __le64 rt_tsft;
 378         u8 rt_flags;
 379         u8 rt_rate;
 380         __le16 rt_channel;
 381         __le16 rt_chbitmask;
 382 } __packed;
 383
 384 struct hwsim_radiotap_ack_hdr {
 385         struct ieee80211_radiotap_header hdr;
 386         u8 rt_flags;
 387         u8 pad;
 388         __le16 rt_channel;
 389         __le16 rt_chbitmask;
 390 } __packed;
 391
 392 /* MAC80211_HWSIM netlinf family */
 393 static struct genl_family hwsim_genl_family = {
 394         .id = GENL_ID_GENERATE,
 395         .hdrsize = 0,
 396         .name = "MAC80211_HWSIM",
 397         .version = 1,
 398         .maxattr = HWSIM_ATTR_MAX,
 399 };
 400
 401 /* MAC80211_HWSIM netlink policy */
 402
 403 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 404         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 405                                        .len = 6*sizeof(u8) },
 406         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 407                                           .len = 6*sizeof(u8) },
 408         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 409                                .len = IEEE80211_MAX_DATA_LEN },
 410         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 411         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 412         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 413         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 414                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 415                                         struct hwsim_tx_rate)},
 416         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 417 };
 418
 419 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 420                                         struct net_device *dev)
 421 {
 422         /* TODO: allow packet injection */
 423         dev_kfree_skb(skb);
 424         return NETDEV_TX_OK;
 425 }
 426
 427 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 428 {
 429         return ktime_to_us(ktime_get_real());
 430 }
 431
 432 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 433 {
 434         u64 now = mac80211_hwsim_get_tsf_raw();
 435         return cpu_to_le64(now + data->tsf_offset);
 436 }
 437
 438 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 439                                   struct ieee80211_vif *vif)
 440 {
 441         struct mac80211_hwsim_data *data = hw->priv;
 442         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 443 }
 444
 445 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 446                 struct ieee80211_vif *vif, u64 tsf)
 447 {
 448         struct mac80211_hwsim_data *data = hw->priv;
 449         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 450         u32 bcn_int = data->beacon_int;
 451         s64 delta = tsf - now;
 452
 453         data->tsf_offset += delta;
 454         /* adjust after beaconing with new timestamp at old TBTT */
 455         data->bcn_delta = do_div(delta, bcn_int);
 456 }
 457
 458 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 459                                       struct sk_buff *tx_skb,
 460                                       struct ieee80211_channel *chan)
 461 {
 462         struct mac80211_hwsim_data *data = hw->priv;
 463         struct sk_buff *skb;
 464         struct hwsim_radiotap_hdr *hdr;
 465         u16 flags;
 466         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 467         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 468
 469         if (!netif_running(hwsim_mon))
 470                 return;
 471
 472         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 473         if (skb == NULL)
 474                 return;
 475
 476         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 477         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 478         hdr->hdr.it_pad = 0;
 479         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 480         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 481                                           (1 << IEEE80211_RADIOTAP_RATE) |
 482                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 483                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 484         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 485         hdr->rt_flags = 0;
 486         hdr->rt_rate = txrate->bitrate / 5;
 487         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 488         flags = IEEE80211_CHAN_2GHZ;
 489         if (txrate->flags & IEEE80211_RATE_ERP_G)
 490                 flags |= IEEE80211_CHAN_OFDM;
 491         else
 492                 flags |= IEEE80211_CHAN_CCK;
 493         hdr->rt_chbitmask = cpu_to_le16(flags);
 494
 495         skb->dev = hwsim_mon;
 496         skb_set_mac_header(skb, 0);
 497         skb->ip_summed = CHECKSUM_UNNECESSARY;
 498         skb->pkt_type = PACKET_OTHERHOST;
 499         skb->protocol = htons(ETH_P_802_2);
 500         memset(skb->cb, 0, sizeof(skb->cb));
 501         netif_rx(skb);
 502 }
 503
 504
 505 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 506                                        const u8 *addr)
 507 {
 508         struct sk_buff *skb;
 509         struct hwsim_radiotap_ack_hdr *hdr;
 510         u16 flags;
 511         struct ieee80211_hdr *hdr11;
 512
 513         if (!netif_running(hwsim_mon))
 514                 return;
 515
 516         skb = dev_alloc_skb(100);
 517         if (skb == NULL)
 518                 return;
 519
 520         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 521         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 522         hdr->hdr.it_pad = 0;
 523         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 524         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 525                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 526         hdr->rt_flags = 0;
 527         hdr->pad = 0;
 528         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 529         flags = IEEE80211_CHAN_2GHZ;
 530         hdr->rt_chbitmask = cpu_to_le16(flags);
 531
 532         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 533         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 534                                            IEEE80211_STYPE_ACK);
 535         hdr11->duration_id = cpu_to_le16(0);
 536         memcpy(hdr11->addr1, addr, ETH_ALEN);
 537
 538         skb->dev = hwsim_mon;
 539         skb_set_mac_header(skb, 0);
 540         skb->ip_summed = CHECKSUM_UNNECESSARY;
 541         skb->pkt_type = PACKET_OTHERHOST;
 542         skb->protocol = htons(ETH_P_802_2);
 543         memset(skb->cb, 0, sizeof(skb->cb));
 544         netif_rx(skb);
 545 }
 546
 547
 548 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 549                            struct sk_buff *skb)
 550 {
 551         switch (data->ps) {
 552         case PS_DISABLED:
 553                 return true;
 554         case PS_ENABLED:
 555                 return false;
 556         case PS_AUTO_POLL:
 557                 /* TODO: accept (some) Beacons by default and other frames only
 558                  * if pending PS-Poll has been sent */
 559                 return true;
 560         case PS_MANUAL_POLL:
 561                 /* Allow unicast frames to own address if there is a pending
 562                  * PS-Poll */
 563                 if (data->ps_poll_pending &&
 564                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 565                            ETH_ALEN) == 0) {
 566                         data->ps_poll_pending = false;
 567                         return true;
 568                 }
 569                 return false;
 570         }
 571
 572         return true;
 573 }
 574
 575
 576 struct mac80211_hwsim_addr_match_data {
 577         bool ret;
 578         const u8 *addr;
 579 };
 580
 581 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 582                                      struct ieee80211_vif *vif)
 583 {
 584         struct mac80211_hwsim_addr_match_data *md = data;
 585         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 586                 md->ret = true;
 587 }
 588
 589
 590 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 591                                       const u8 *addr)
 592 {
 593         struct mac80211_hwsim_addr_match_data md;
 594
 595         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 596                 return true;
 597
 598         md.ret = false;
 599         md.addr = addr;
 600         ieee80211_iterate_active_interfaces_atomic(data->hw,
 601                                                    IEEE80211_IFACE_ITER_NORMAL,
 602                                                    mac80211_hwsim_addr_iter,
 603                                                    &md);
 604
 605         return md.ret;
 606 }
 607
 608 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 609                                        struct sk_buff *my_skb,
 610                                        int dst_portid)
 611 {
 612         struct sk_buff *skb;
 613         struct mac80211_hwsim_data *data = hw->priv;
 614         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 615         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 616         void *msg_head;
 617         unsigned int hwsim_flags = 0;
 618         int i;
 619         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 620
 621         if (data->ps != PS_DISABLED)
 622                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 623         /* If the queue contains MAX_QUEUE skb's drop some */
 624         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 625                 /* Droping until WARN_QUEUE level */
 626                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 627                         skb_dequeue(&data->pending);
 628         }
 629
 630         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 631         if (skb == NULL)
 632                 goto nla_put_failure;
 633
 634         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 635                                HWSIM_CMD_FRAME);
 636         if (msg_head == NULL) {
 637                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 638                 goto nla_put_failure;
 639         }
 640
 641         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 642                     sizeof(struct mac_address), data->addresses[1].addr))
 643                 goto nla_put_failure;
 644
 645         /* We get the skb->data */
 646         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 647                 goto nla_put_failure;
 648
 649         /* We get the flags for this transmission, and we translate them to
 650            wmediumd flags  */
 651
 652         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 653                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 654
 655         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 656                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 657
 658         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 659                 goto nla_put_failure;
 660
 661         /* We get the tx control (rate and retries) info*/
 662
 663         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 664                 tx_attempts[i].idx = info->status.rates[i].idx;
 665                 tx_attempts[i].count = info->status.rates[i].count;
 666         }
 667
 668         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 669                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 670                     tx_attempts))
 671                 goto nla_put_failure;
 672
 673         /* We create a cookie to identify this skb */
 674         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 675                 goto nla_put_failure;
 676
 677         genlmsg_end(skb, msg_head);
 678         genlmsg_unicast(&init_net, skb, dst_portid);
 679
 680         /* Enqueue the packet */
 681         skb_queue_tail(&data->pending, my_skb);
 682         return;
 683
 684 nla_put_failure:
 685         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 686 }
 687
 688 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 689                                struct ieee80211_channel *c2)
 690 {
 691         if (!c1 || !c2)
 692                 return false;
 693
 694         return c1->center_freq == c2->center_freq;
 695 }
 696
 697 struct tx_iter_data {
 698         struct ieee80211_channel *channel;
 699         bool receive;
 700 };
 701
 702 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 703                                    struct ieee80211_vif *vif)
 704 {
 705         struct tx_iter_data *data = _data;
 706
 707         if (!vif->chanctx_conf)
 708                 return;
 709
 710         if (!hwsim_chans_compat(data->channel,
 711                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 712                 return;
 713
 714         data->receive = true;
 715 }
 716
 717 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 718                                           struct sk_buff *skb,
 719                                           struct ieee80211_channel *chan)
 720 {
 721         struct mac80211_hwsim_data *data = hw->priv, *data2;
 722         bool ack = false;
 723         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 724         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 725         struct ieee80211_rx_status rx_status;
 726         u64 now;
 727
 728         memset(&rx_status, 0, sizeof(rx_status));
 729         rx_status.flag |= RX_FLAG_MACTIME_START;
 730         rx_status.freq = chan->center_freq;
 731         rx_status.band = chan->band;
 732         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 733                 rx_status.rate_idx =
 734                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
 735                 rx_status.vht_nss =
 736                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
 737                 rx_status.flag |= RX_FLAG_VHT;
 738         } else {
 739                 rx_status.rate_idx = info->control.rates[0].idx;
 740                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 741                         rx_status.flag |= RX_FLAG_HT;
 742         }
 743         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 744                 rx_status.flag |= RX_FLAG_40MHZ;
 745         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 746                 rx_status.flag |= RX_FLAG_SHORT_GI;
 747         /* TODO: simulate real signal strength (and optional packet loss) */
 748         rx_status.signal = data->power_level - 50;
 749
 750         if (data->ps != PS_DISABLED)
 751                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 752
 753         /* release the skb's source info */
 754         skb_orphan(skb);
 755         skb_dst_drop(skb);
 756         skb->mark = 0;
 757         secpath_reset(skb);
 758         nf_reset(skb);
 759
 760         /*
 761          * Get absolute mactime here so all HWs RX at the "same time", and
 762          * absolute TX time for beacon mactime so the timestamp matches.
 763          * Giving beacons a different mactime than non-beacons looks messy, but
 764          * it helps the Toffset be exact and a ~10us mactime discrepancy
 765          * probably doesn't really matter.
 766          */
 767         if (ieee80211_is_beacon(hdr->frame_control) ||
 768             ieee80211_is_probe_resp(hdr->frame_control))
 769                 now = data->abs_bcn_ts;
 770         else
 771                 now = mac80211_hwsim_get_tsf_raw();
 772
 773         /* Copy skb to all enabled radios that are on the current frequency */
 774         spin_lock(&hwsim_radio_lock);
 775         list_for_each_entry(data2, &hwsim_radios, list) {
 776                 struct sk_buff *nskb;
 777                 struct tx_iter_data tx_iter_data = {
 778                         .receive = false,
 779                         .channel = chan,
 780                 };
 781
 782                 if (data == data2)
 783                         continue;
 784
 785                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 786                     !hwsim_ps_rx_ok(data2, skb))
 787                         continue;
 788
 789                 if (!(data->group & data2->group))
 790                         continue;
 791
 792                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 793                     !hwsim_chans_compat(chan, data2->channel)) {
 794                         ieee80211_iterate_active_interfaces_atomic(
 795                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 796                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 797                         if (!tx_iter_data.receive)
 798                                 continue;
 799                 }
 800
 801                 /*
 802                  * reserve some space for our vendor and the normal
 803                  * radiotap header, since we're copying anyway
 804                  */
 805                 if (skb->len < PAGE_SIZE && paged_rx) {
 806                         struct page *page = alloc_page(GFP_ATOMIC);
 807
 808                         if (!page)
 809                                 continue;
 810
 811                         nskb = dev_alloc_skb(128);
 812                         if (!nskb) {
 813                                 __free_page(page);
 814                                 continue;
 815                         }
 816
 817                         memcpy(page_address(page), skb->data, skb->len);
 818                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 819                 } else {
 820                         nskb = skb_copy(skb, GFP_ATOMIC);
 821                         if (!nskb)
 822                                 continue;
 823                 }
 824
 825                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 826                         ack = true;
 827
 828                 rx_status.mactime = now + data2->tsf_offset;
 829 #if 0
 830                 /*
 831                  * Don't enable this code by default as the OUI 00:00:00
 832                  * is registered to Xerox so we shouldn't use it here, it
 833                  * might find its way into pcap files.
 834                  * Note that this code requires the headroom in the SKB
 835                  * that was allocated earlier.
 836                  */
 837                 rx_status.vendor_radiotap_oui[0] = 0x00;
 838                 rx_status.vendor_radiotap_oui[1] = 0x00;
 839                 rx_status.vendor_radiotap_oui[2] = 0x00;
 840                 rx_status.vendor_radiotap_subns = 127;
 841                 /*
 842                  * Radiotap vendor namespaces can (and should) also be
 843                  * split into fields by using the standard radiotap
 844                  * presence bitmap mechanism. Use just BIT(0) here for
 845                  * the presence bitmap.
 846                  */
 847                 rx_status.vendor_radiotap_bitmap = BIT(0);
 848                 /* We have 8 bytes of (dummy) data */
 849                 rx_status.vendor_radiotap_len = 8;
 850                 /* For testing, also require it to be aligned */
 851                 rx_status.vendor_radiotap_align = 8;
 852                 /* push the data */
 853                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 854 #endif
 855
 856                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 857                 ieee80211_rx_irqsafe(data2->hw, nskb);
 858         }
 859         spin_unlock(&hwsim_radio_lock);
 860
 861         return ack;
 862 }
 863
 864 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 865                               struct ieee80211_tx_control *control,
 866                               struct sk_buff *skb)
 867 {
 868         struct mac80211_hwsim_data *data = hw->priv;
 869         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 870         struct ieee80211_chanctx_conf *chanctx_conf;
 871         struct ieee80211_channel *channel;
 872         bool ack;
 873         u32 _portid;
 874
 875         if (WARN_ON(skb->len < 10)) {
 876                 /* Should not happen; just a sanity check for addr1 use */
 877                 ieee80211_free_txskb(hw, skb);
 878                 return;
 879         }
 880
 881         if (channels == 1) {
 882                 channel = data->channel;
 883         } else if (txi->hw_queue == 4) {
 884                 channel = data->tmp_chan;
 885         } else {
 886                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 887                 if (chanctx_conf)
 888                         channel = chanctx_conf->def.chan;
 889                 else
 890                         channel = NULL;
 891         }
 892
 893         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 894                 ieee80211_free_txskb(hw, skb);
 895                 return;
 896         }
 897
 898         if (data->idle && !data->tmp_chan) {
 899                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 900                 ieee80211_free_txskb(hw, skb);
 901                 return;
 902         }
 903
 904         if (txi->control.vif)
 905                 hwsim_check_magic(txi->control.vif);
 906         if (control->sta)
 907                 hwsim_check_sta_magic(control->sta);
 908
 909         if (rctbl)
 910                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
 911                                        txi->control.rates,
 912                                        ARRAY_SIZE(txi->control.rates));
 913
 914         txi->rate_driver_data[0] = channel;
 915         mac80211_hwsim_monitor_rx(hw, skb, channel);
 916
 917         /* wmediumd mode check */
 918         _portid = ACCESS_ONCE(wmediumd_portid);
 919
 920         if (_portid)
 921                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 922
 923         /* NO wmediumd detected, perfect medium simulation */
 924         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 925
 926         if (ack && skb->len >= 16) {
 927                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 928                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 929         }
 930
 931         ieee80211_tx_info_clear_status(txi);
 932
 933         /* frame was transmitted at most favorable rate at first attempt */
 934         txi->control.rates[0].count = 1;
 935         txi->control.rates[1].idx = -1;
 936
 937         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 938                 txi->flags |= IEEE80211_TX_STAT_ACK;
 939         ieee80211_tx_status_irqsafe(hw, skb);
 940 }
 941
 942
 943 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 944 {
 945         struct mac80211_hwsim_data *data = hw->priv;
 946         wiphy_debug(hw->wiphy, "%s\n", __func__);
 947         data->started = true;
 948         return 0;
 949 }
 950
 951
 952 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 953 {
 954         struct mac80211_hwsim_data *data = hw->priv;
 955         data->started = false;
 956         tasklet_hrtimer_cancel(&data->beacon_timer);
 957         wiphy_debug(hw->wiphy, "%s\n", __func__);
 958 }
 959
 960
 961 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 962                                         struct ieee80211_vif *vif)
 963 {
 964         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 965                     __func__, ieee80211_vif_type_p2p(vif),
 966                     vif->addr);
 967         hwsim_set_magic(vif);
 968
 969         vif->cab_queue = 0;
 970         vif->hw_queue[IEEE80211_AC_VO] = 0;
 971         vif->hw_queue[IEEE80211_AC_VI] = 1;
 972         vif->hw_queue[IEEE80211_AC_BE] = 2;
 973         vif->hw_queue[IEEE80211_AC_BK] = 3;
 974
 975         return 0;
 976 }
 977
 978
 979 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 980                                            struct ieee80211_vif *vif,
 981                                            enum nl80211_iftype newtype,
 982                                            bool newp2p)
 983 {
 984         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 985         wiphy_debug(hw->wiphy,
 986                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 987                     __func__, ieee80211_vif_type_p2p(vif),
 988                     newtype, vif->addr);
 989         hwsim_check_magic(vif);
 990
 991         /*
 992          * interface may change from non-AP to AP in
 993          * which case this needs to be set up again
 994          */
 995         vif->cab_queue = 0;
 996
 997         return 0;
 998 }
 999
1000 static void mac80211_hwsim_remove_interface(
1001         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1002 {
1003         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1004                     __func__, ieee80211_vif_type_p2p(vif),
1005                     vif->addr);
1006         hwsim_check_magic(vif);
1007         hwsim_clear_magic(vif);
1008 }
1009
1010 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1011                                     struct sk_buff *skb,
1012                                     struct ieee80211_channel *chan)
1013 {
1014         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1015
1016         if (rctbl) {
1017                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1018                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1019                                        txi->control.rates,
1020                                        ARRAY_SIZE(txi->control.rates));
1021         }
1022
1023         mac80211_hwsim_monitor_rx(hw, skb, chan);
1024
1025         if (_pid)
1026                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1027
1028         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1029         dev_kfree_skb(skb);
1030 }
1031
1032 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1033                                      struct ieee80211_vif *vif)
1034 {
1035         struct mac80211_hwsim_data *data = arg;
1036         struct ieee80211_hw *hw = data->hw;
1037         struct ieee80211_tx_info *info;
1038         struct ieee80211_rate *txrate;
1039         struct ieee80211_mgmt *mgmt;
1040         struct sk_buff *skb;
1041
1042         hwsim_check_magic(vif);
1043
1044         if (vif->type != NL80211_IFTYPE_AP &&
1045             vif->type != NL80211_IFTYPE_MESH_POINT &&
1046             vif->type != NL80211_IFTYPE_ADHOC)
1047                 return;
1048
1049         skb = ieee80211_beacon_get(hw, vif);
1050         if (skb == NULL)
1051                 return;
1052         info = IEEE80211_SKB_CB(skb);
1053         if (rctbl)
1054                 ieee80211_get_tx_rates(vif, NULL, skb,
1055                                        info->control.rates,
1056                                        ARRAY_SIZE(info->control.rates));
1057
1058         txrate = ieee80211_get_tx_rate(hw, info);
1059
1060         mgmt = (struct ieee80211_mgmt *) skb->data;
1061         /* fake header transmission time */
1062         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1063         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1064                                                data->tsf_offset +
1065                                                24 * 8 * 10 / txrate->bitrate);
1066
1067         mac80211_hwsim_tx_frame(hw, skb,
1068                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1069 }
1070
1071 static enum hrtimer_restart
1072 mac80211_hwsim_beacon(struct hrtimer *timer)
1073 {
1074         struct mac80211_hwsim_data *data =
1075                 container_of(timer, struct mac80211_hwsim_data,
1076                              beacon_timer.timer);
1077         struct ieee80211_hw *hw = data->hw;
1078         u64 bcn_int = data->beacon_int;
1079         ktime_t next_bcn;
1080
1081         if (!data->started)
1082                 goto out;
1083
1084         ieee80211_iterate_active_interfaces_atomic(
1085                 hw, IEEE80211_IFACE_ITER_NORMAL,
1086                 mac80211_hwsim_beacon_tx, data);
1087
1088         /* beacon at new TBTT + beacon interval */
1089         if (data->bcn_delta) {
1090                 bcn_int -= data->bcn_delta;
1091                 data->bcn_delta = 0;
1092         }
1093
1094         next_bcn = ktime_add(hrtimer_get_expires(timer),
1095                              ns_to_ktime(bcn_int * 1000));
1096         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1097 out:
1098         return HRTIMER_NORESTART;
1099 }
1100
1101 static const char * const hwsim_chanwidths[] = {
1102         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1103         [NL80211_CHAN_WIDTH_20] = "ht20",
1104         [NL80211_CHAN_WIDTH_40] = "ht40",
1105         [NL80211_CHAN_WIDTH_80] = "vht80",
1106         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1107         [NL80211_CHAN_WIDTH_160] = "vht160",
1108 };
1109
1110 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1111 {
1112         struct mac80211_hwsim_data *data = hw->priv;
1113         struct ieee80211_conf *conf = &hw->conf;
1114         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1115                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1116                 [IEEE80211_SMPS_OFF] = "off",
1117                 [IEEE80211_SMPS_STATIC] = "static",
1118                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1119         };
1120
1121         if (conf->chandef.chan)
1122                 wiphy_debug(hw->wiphy,
1123                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1124                             __func__,
1125                             conf->chandef.chan->center_freq,
1126                             conf->chandef.center_freq1,
1127                             conf->chandef.center_freq2,
1128                             hwsim_chanwidths[conf->chandef.width],
1129                             !!(conf->flags & IEEE80211_CONF_IDLE),
1130                             !!(conf->flags & IEEE80211_CONF_PS),
1131                             smps_modes[conf->smps_mode]);
1132         else
1133                 wiphy_debug(hw->wiphy,
1134                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1135                             __func__,
1136                             !!(conf->flags & IEEE80211_CONF_IDLE),
1137                             !!(conf->flags & IEEE80211_CONF_PS),
1138                             smps_modes[conf->smps_mode]);
1139
1140         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1141
1142         data->channel = conf->chandef.chan;
1143
1144         WARN_ON(data->channel && channels > 1);
1145
1146         data->power_level = conf->power_level;
1147         if (!data->started || !data->beacon_int)
1148                 tasklet_hrtimer_cancel(&data->beacon_timer);
1149         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1150                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1151                 u32 bcn_int = data->beacon_int;
1152                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1153
1154                 tasklet_hrtimer_start(&data->beacon_timer,
1155                                       ns_to_ktime(until_tbtt * 1000),
1156                                       HRTIMER_MODE_REL);
1157         }
1158
1159         return 0;
1160 }
1161
1162
1163 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1164                                             unsigned int changed_flags,
1165                                             unsigned int *total_flags,u64 multicast)
1166 {
1167         struct mac80211_hwsim_data *data = hw->priv;
1168
1169         wiphy_debug(hw->wiphy, "%s\n", __func__);
1170
1171         data->rx_filter = 0;
1172         if (*total_flags & FIF_PROMISC_IN_BSS)
1173                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1174         if (*total_flags & FIF_ALLMULTI)
1175                 data->rx_filter |= FIF_ALLMULTI;
1176
1177         *total_flags = data->rx_filter;
1178 }
1179
1180 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1181                                        struct ieee80211_vif *vif)
1182 {
1183         unsigned int *count = data;
1184         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1185
1186         if (vp->bcn_en)
1187                 (*count)++;
1188 }
1189
1190 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1191                                             struct ieee80211_vif *vif,
1192                                             struct ieee80211_bss_conf *info,
1193                                             u32 changed)
1194 {
1195         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1196         struct mac80211_hwsim_data *data = hw->priv;
1197
1198         hwsim_check_magic(vif);
1199
1200         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1201                     __func__, changed, vif->addr);
1202
1203         if (changed & BSS_CHANGED_BSSID) {
1204                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1205                             __func__, info->bssid);
1206                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1207         }
1208
1209         if (changed & BSS_CHANGED_ASSOC) {
1210                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1211                             info->assoc, info->aid);
1212                 vp->assoc = info->assoc;
1213                 vp->aid = info->aid;
1214         }
1215
1216         if (changed & BSS_CHANGED_BEACON_INT) {
1217                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1218                 data->beacon_int = info->beacon_int * 1024;
1219         }
1220
1221         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1222                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1223                 vp->bcn_en = info->enable_beacon;
1224                 if (data->started &&
1225                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1226                     info->enable_beacon) {
1227                         u64 tsf, until_tbtt;
1228                         u32 bcn_int;
1229                         if (WARN_ON(!data->beacon_int))
1230                                 data->beacon_int = 1000 * 1024;
1231                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1232                         bcn_int = data->beacon_int;
1233                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1234                         tasklet_hrtimer_start(&data->beacon_timer,
1235                                               ns_to_ktime(until_tbtt * 1000),
1236                                               HRTIMER_MODE_REL);
1237                 } else if (!info->enable_beacon) {
1238                         unsigned int count = 0;
1239                         ieee80211_iterate_active_interfaces_atomic(
1240                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1241                                 mac80211_hwsim_bcn_en_iter, &count);
1242                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1243                                     count);
1244                         if (count == 0)
1245                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1246                 }
1247         }
1248
1249         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1250                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1251                             info->use_cts_prot);
1252         }
1253
1254         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1255                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1256                             info->use_short_preamble);
1257         }
1258
1259         if (changed & BSS_CHANGED_ERP_SLOT) {
1260                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1261         }
1262
1263         if (changed & BSS_CHANGED_HT) {
1264                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1265                             info->ht_operation_mode);
1266         }
1267
1268         if (changed & BSS_CHANGED_BASIC_RATES) {
1269                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1270                             (unsigned long long) info->basic_rates);
1271         }
1272
1273         if (changed & BSS_CHANGED_TXPOWER)
1274                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1275 }
1276
1277 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1278                                   struct ieee80211_vif *vif,
1279                                   struct ieee80211_sta *sta)
1280 {
1281         hwsim_check_magic(vif);
1282         hwsim_set_sta_magic(sta);
1283
1284         return 0;
1285 }
1286
1287 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1288                                      struct ieee80211_vif *vif,
1289                                      struct ieee80211_sta *sta)
1290 {
1291         hwsim_check_magic(vif);
1292         hwsim_clear_sta_magic(sta);
1293
1294         return 0;
1295 }
1296
1297 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1298                                       struct ieee80211_vif *vif,
1299                                       enum sta_notify_cmd cmd,
1300                                       struct ieee80211_sta *sta)
1301 {
1302         hwsim_check_magic(vif);
1303
1304         switch (cmd) {
1305         case STA_NOTIFY_SLEEP:
1306         case STA_NOTIFY_AWAKE:
1307                 /* TODO: make good use of these flags */
1308                 break;
1309         default:
1310                 WARN(1, "Invalid sta notify: %d\n", cmd);
1311                 break;
1312         }
1313 }
1314
1315 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1316                                   struct ieee80211_sta *sta,
1317                                   bool set)
1318 {
1319         hwsim_check_sta_magic(sta);
1320         return 0;
1321 }
1322
1323 static int mac80211_hwsim_conf_tx(
1324         struct ieee80211_hw *hw,
1325         struct ieee80211_vif *vif, u16 queue,
1326         const struct ieee80211_tx_queue_params *params)
1327 {
1328         wiphy_debug(hw->wiphy,
1329                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1330                     __func__, queue,
1331                     params->txop, params->cw_min,
1332                     params->cw_max, params->aifs);
1333         return 0;
1334 }
1335
1336 static int mac80211_hwsim_get_survey(
1337         struct ieee80211_hw *hw, int idx,
1338         struct survey_info *survey)
1339 {
1340         struct ieee80211_conf *conf = &hw->conf;
1341
1342         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1343
1344         if (idx != 0)
1345                 return -ENOENT;
1346
1347         /* Current channel */
1348         survey->channel = conf->chandef.chan;
1349
1350         /*
1351          * Magically conjured noise level --- this is only ok for simulated hardware.
1352          *
1353          * A real driver which cannot determine the real channel noise MUST NOT
1354          * report any noise, especially not a magically conjured one :-)
1355          */
1356         survey->filled = SURVEY_INFO_NOISE_DBM;
1357         survey->noise = -92;
1358
1359         return 0;
1360 }
1361
1362 #ifdef CONFIG_NL80211_TESTMODE
1363 /*
1364  * This section contains example code for using netlink
1365  * attributes with the testmode command in nl80211.
1366  */
1367
1368 /* These enums need to be kept in sync with userspace */
1369 enum hwsim_testmode_attr {
1370         __HWSIM_TM_ATTR_INVALID = 0,
1371         HWSIM_TM_ATTR_CMD       = 1,
1372         HWSIM_TM_ATTR_PS        = 2,
1373
1374         /* keep last */
1375         __HWSIM_TM_ATTR_AFTER_LAST,
1376         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1377 };
1378
1379 enum hwsim_testmode_cmd {
1380         HWSIM_TM_CMD_SET_PS             = 0,
1381         HWSIM_TM_CMD_GET_PS             = 1,
1382         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1383         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1384 };
1385
1386 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1387         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1388         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1389 };
1390
1391 static int hwsim_fops_ps_write(void *dat, u64 val);
1392
1393 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1394                                        struct ieee80211_vif *vif,
1395                                        void *data, int len)
1396 {
1397         struct mac80211_hwsim_data *hwsim = hw->priv;
1398         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1399         struct sk_buff *skb;
1400         int err, ps;
1401
1402         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1403                         hwsim_testmode_policy);
1404         if (err)
1405                 return err;
1406
1407         if (!tb[HWSIM_TM_ATTR_CMD])
1408                 return -EINVAL;
1409
1410         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1411         case HWSIM_TM_CMD_SET_PS:
1412                 if (!tb[HWSIM_TM_ATTR_PS])
1413                         return -EINVAL;
1414                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1415                 return hwsim_fops_ps_write(hwsim, ps);
1416         case HWSIM_TM_CMD_GET_PS:
1417                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1418                                                 nla_total_size(sizeof(u32)));
1419                 if (!skb)
1420                         return -ENOMEM;
1421                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1422                         goto nla_put_failure;
1423                 return cfg80211_testmode_reply(skb);
1424         case HWSIM_TM_CMD_STOP_QUEUES:
1425                 ieee80211_stop_queues(hw);
1426                 return 0;
1427         case HWSIM_TM_CMD_WAKE_QUEUES:
1428                 ieee80211_wake_queues(hw);
1429                 return 0;
1430         default:
1431                 return -EOPNOTSUPP;
1432         }
1433
1434  nla_put_failure:
1435         kfree_skb(skb);
1436         return -ENOBUFS;
1437 }
1438 #endif
1439
1440 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1441                                        struct ieee80211_vif *vif,
1442                                        enum ieee80211_ampdu_mlme_action action,
1443                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1444                                        u8 buf_size)
1445 {
1446         switch (action) {
1447         case IEEE80211_AMPDU_TX_START:
1448                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1449                 break;
1450         case IEEE80211_AMPDU_TX_STOP_CONT:
1451         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1452         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1453                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1454                 break;
1455         case IEEE80211_AMPDU_TX_OPERATIONAL:
1456                 break;
1457         case IEEE80211_AMPDU_RX_START:
1458         case IEEE80211_AMPDU_RX_STOP:
1459                 break;
1460         default:
1461                 return -EOPNOTSUPP;
1462         }
1463
1464         return 0;
1465 }
1466
1467 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1468 {
1469         /* Not implemented, queues only on kernel side */
1470 }
1471
1472 static void hw_scan_work(struct work_struct *work)
1473 {
1474         struct mac80211_hwsim_data *hwsim =
1475                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1476         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1477         int dwell, i;
1478
1479         mutex_lock(&hwsim->mutex);
1480         if (hwsim->scan_chan_idx >= req->n_channels) {
1481                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1482                 ieee80211_scan_completed(hwsim->hw, false);
1483                 hwsim->hw_scan_request = NULL;
1484                 hwsim->hw_scan_vif = NULL;
1485                 hwsim->tmp_chan = NULL;
1486                 mutex_unlock(&hwsim->mutex);
1487                 return;
1488         }
1489
1490         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1491                     req->channels[hwsim->scan_chan_idx]->center_freq);
1492
1493         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1494         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1495             !req->n_ssids) {
1496                 dwell = 120;
1497         } else {
1498                 dwell = 30;
1499                 /* send probes */
1500                 for (i = 0; i < req->n_ssids; i++) {
1501                         struct sk_buff *probe;
1502
1503                         probe = ieee80211_probereq_get(hwsim->hw,
1504                                                        hwsim->hw_scan_vif,
1505                                                        req->ssids[i].ssid,
1506                                                        req->ssids[i].ssid_len,
1507                                                        req->ie_len);
1508                         if (!probe)
1509                                 continue;
1510
1511                         if (req->ie_len)
1512                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1513                                        req->ie_len);
1514
1515                         local_bh_disable();
1516                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1517                                                 hwsim->tmp_chan);
1518                         local_bh_enable();
1519                 }
1520         }
1521         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1522                                      msecs_to_jiffies(dwell));
1523         hwsim->scan_chan_idx++;
1524         mutex_unlock(&hwsim->mutex);
1525 }
1526
1527 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1528                                   struct ieee80211_vif *vif,
1529                                   struct cfg80211_scan_request *req)
1530 {
1531         struct mac80211_hwsim_data *hwsim = hw->priv;
1532
1533         mutex_lock(&hwsim->mutex);
1534         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1535                 mutex_unlock(&hwsim->mutex);
1536                 return -EBUSY;
1537         }
1538         hwsim->hw_scan_request = req;
1539         hwsim->hw_scan_vif = vif;
1540         hwsim->scan_chan_idx = 0;
1541         mutex_unlock(&hwsim->mutex);
1542
1543         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1544
1545         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1546
1547         return 0;
1548 }
1549
1550 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1551                                           struct ieee80211_vif *vif)
1552 {
1553         struct mac80211_hwsim_data *hwsim = hw->priv;
1554
1555         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1556
1557         cancel_delayed_work_sync(&hwsim->hw_scan);
1558
1559         mutex_lock(&hwsim->mutex);
1560         ieee80211_scan_completed(hwsim->hw, true);
1561         hwsim->tmp_chan = NULL;
1562         hwsim->hw_scan_request = NULL;
1563         hwsim->hw_scan_vif = NULL;
1564         mutex_unlock(&hwsim->mutex);
1565 }
1566
1567 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1568 {
1569         struct mac80211_hwsim_data *hwsim = hw->priv;
1570
1571         mutex_lock(&hwsim->mutex);
1572
1573         if (hwsim->scanning) {
1574                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1575                 goto out;
1576         }
1577
1578         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1579         hwsim->scanning = true;
1580
1581 out:
1582         mutex_unlock(&hwsim->mutex);
1583 }
1584
1585 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1586 {
1587         struct mac80211_hwsim_data *hwsim = hw->priv;
1588
1589         mutex_lock(&hwsim->mutex);
1590
1591         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1592         hwsim->scanning = false;
1593
1594         mutex_unlock(&hwsim->mutex);
1595 }
1596
1597 static void hw_roc_done(struct work_struct *work)
1598 {
1599         struct mac80211_hwsim_data *hwsim =
1600                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1601
1602         mutex_lock(&hwsim->mutex);
1603         ieee80211_remain_on_channel_expired(hwsim->hw);
1604         hwsim->tmp_chan = NULL;
1605         mutex_unlock(&hwsim->mutex);
1606
1607         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1608 }
1609
1610 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1611                               struct ieee80211_vif *vif,
1612                               struct ieee80211_channel *chan,
1613                               int duration,
1614                               enum ieee80211_roc_type type)
1615 {
1616         struct mac80211_hwsim_data *hwsim = hw->priv;
1617
1618         mutex_lock(&hwsim->mutex);
1619         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1620                 mutex_unlock(&hwsim->mutex);
1621                 return -EBUSY;
1622         }
1623
1624         hwsim->tmp_chan = chan;
1625         mutex_unlock(&hwsim->mutex);
1626
1627         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1628                     chan->center_freq, duration);
1629
1630         ieee80211_ready_on_channel(hw);
1631
1632         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1633                                      msecs_to_jiffies(duration));
1634         return 0;
1635 }
1636
1637 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1638 {
1639         struct mac80211_hwsim_data *hwsim = hw->priv;
1640
1641         cancel_delayed_work_sync(&hwsim->roc_done);
1642
1643         mutex_lock(&hwsim->mutex);
1644         hwsim->tmp_chan = NULL;
1645         mutex_unlock(&hwsim->mutex);
1646
1647         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1648
1649         return 0;
1650 }
1651
1652 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1653                                       struct ieee80211_chanctx_conf *ctx)
1654 {
1655         hwsim_set_chanctx_magic(ctx);
1656         wiphy_debug(hw->wiphy,
1657                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1658                     ctx->def.chan->center_freq, ctx->def.width,
1659                     ctx->def.center_freq1, ctx->def.center_freq2);
1660         return 0;
1661 }
1662
1663 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1664                                           struct ieee80211_chanctx_conf *ctx)
1665 {
1666         wiphy_debug(hw->wiphy,
1667                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1668                     ctx->def.chan->center_freq, ctx->def.width,
1669                     ctx->def.center_freq1, ctx->def.center_freq2);
1670         hwsim_check_chanctx_magic(ctx);
1671         hwsim_clear_chanctx_magic(ctx);
1672 }
1673
1674 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1675                                           struct ieee80211_chanctx_conf *ctx,
1676                                           u32 changed)
1677 {
1678         hwsim_check_chanctx_magic(ctx);
1679         wiphy_debug(hw->wiphy,
1680                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1681                     ctx->def.chan->center_freq, ctx->def.width,
1682                     ctx->def.center_freq1, ctx->def.center_freq2);
1683 }
1684
1685 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1686                                              struct ieee80211_vif *vif,
1687                                              struct ieee80211_chanctx_conf *ctx)
1688 {
1689         hwsim_check_magic(vif);
1690         hwsim_check_chanctx_magic(ctx);
1691
1692         return 0;
1693 }
1694
1695 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1696                                                 struct ieee80211_vif *vif,
1697                                                 struct ieee80211_chanctx_conf *ctx)
1698 {
1699         hwsim_check_magic(vif);
1700         hwsim_check_chanctx_magic(ctx);
1701 }
1702
1703 static struct ieee80211_ops mac80211_hwsim_ops =
1704 {
1705         .tx = mac80211_hwsim_tx,
1706         .start = mac80211_hwsim_start,
1707         .stop = mac80211_hwsim_stop,
1708         .add_interface = mac80211_hwsim_add_interface,
1709         .change_interface = mac80211_hwsim_change_interface,
1710         .remove_interface = mac80211_hwsim_remove_interface,
1711         .config = mac80211_hwsim_config,
1712         .configure_filter = mac80211_hwsim_configure_filter,
1713         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1714         .sta_add = mac80211_hwsim_sta_add,
1715         .sta_remove = mac80211_hwsim_sta_remove,
1716         .sta_notify = mac80211_hwsim_sta_notify,
1717         .set_tim = mac80211_hwsim_set_tim,
1718         .conf_tx = mac80211_hwsim_conf_tx,
1719         .get_survey = mac80211_hwsim_get_survey,
1720         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1721         .ampdu_action = mac80211_hwsim_ampdu_action,
1722         .sw_scan_start = mac80211_hwsim_sw_scan,
1723         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1724         .flush = mac80211_hwsim_flush,
1725         .get_tsf = mac80211_hwsim_get_tsf,
1726         .set_tsf = mac80211_hwsim_set_tsf,
1727 };
1728
1729
1730 static void mac80211_hwsim_free(void)
1731 {
1732         struct list_head tmplist, *i, *tmp;
1733         struct mac80211_hwsim_data *data, *tmpdata;
1734
1735         INIT_LIST_HEAD(&tmplist);
1736
1737         spin_lock_bh(&hwsim_radio_lock);
1738         list_for_each_safe(i, tmp, &hwsim_radios)
1739                 list_move(i, &tmplist);
1740         spin_unlock_bh(&hwsim_radio_lock);
1741
1742         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1743                 debugfs_remove_recursive(data->debugfs);
1744                 ieee80211_unregister_hw(data->hw);
1745                 device_release_driver(data->dev);
1746                 device_unregister(data->dev);
1747                 ieee80211_free_hw(data->hw);
1748         }
1749         class_destroy(hwsim_class);
1750 }
1751
1752 static struct platform_driver mac80211_hwsim_driver = {
1753         .driver = {
1754                 .name = "mac80211_hwsim",
1755                 .owner = THIS_MODULE,
1756         },
1757 };
1758
1759 static const struct net_device_ops hwsim_netdev_ops = {
1760         .ndo_start_xmit         = hwsim_mon_xmit,
1761         .ndo_change_mtu         = eth_change_mtu,
1762         .ndo_set_mac_address    = eth_mac_addr,
1763         .ndo_validate_addr      = eth_validate_addr,
1764 };
1765
1766 static void hwsim_mon_setup(struct net_device *dev)
1767 {
1768         dev->netdev_ops = &hwsim_netdev_ops;
1769         dev->destructor = free_netdev;
1770         ether_setup(dev);
1771         dev->tx_queue_len = 0;
1772         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1773         memset(dev->dev_addr, 0, ETH_ALEN);
1774         dev->dev_addr[0] = 0x12;
1775 }
1776
1777
1778 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1779 {
1780         struct mac80211_hwsim_data *data = dat;
1781         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1782         struct sk_buff *skb;
1783         struct ieee80211_pspoll *pspoll;
1784
1785         if (!vp->assoc)
1786                 return;
1787
1788         wiphy_debug(data->hw->wiphy,
1789                     "%s: send PS-Poll to %pM for aid %d\n",
1790                     __func__, vp->bssid, vp->aid);
1791
1792         skb = dev_alloc_skb(sizeof(*pspoll));
1793         if (!skb)
1794                 return;
1795         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1796         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1797                                             IEEE80211_STYPE_PSPOLL |
1798                                             IEEE80211_FCTL_PM);
1799         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1800         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1801         memcpy(pspoll->ta, mac, ETH_ALEN);
1802
1803         rcu_read_lock();
1804         mac80211_hwsim_tx_frame(data->hw, skb,
1805                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1806         rcu_read_unlock();
1807 }
1808
1809 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1810                                 struct ieee80211_vif *vif, int ps)
1811 {
1812         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1813         struct sk_buff *skb;
1814         struct ieee80211_hdr *hdr;
1815
1816         if (!vp->assoc)
1817                 return;
1818
1819         wiphy_debug(data->hw->wiphy,
1820                     "%s: send data::nullfunc to %pM ps=%d\n",
1821                     __func__, vp->bssid, ps);
1822
1823         skb = dev_alloc_skb(sizeof(*hdr));
1824         if (!skb)
1825                 return;
1826         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1827         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1828                                          IEEE80211_STYPE_NULLFUNC |
1829                                          (ps ? IEEE80211_FCTL_PM : 0));
1830         hdr->duration_id = cpu_to_le16(0);
1831         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1832         memcpy(hdr->addr2, mac, ETH_ALEN);
1833         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1834
1835         rcu_read_lock();
1836         mac80211_hwsim_tx_frame(data->hw, skb,
1837                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1838         rcu_read_unlock();
1839 }
1840
1841
1842 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1843                                    struct ieee80211_vif *vif)
1844 {
1845         struct mac80211_hwsim_data *data = dat;
1846         hwsim_send_nullfunc(data, mac, vif, 1);
1847 }
1848
1849
1850 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1851                                       struct ieee80211_vif *vif)
1852 {
1853         struct mac80211_hwsim_data *data = dat;
1854         hwsim_send_nullfunc(data, mac, vif, 0);
1855 }
1856
1857
1858 static int hwsim_fops_ps_read(void *dat, u64 *val)
1859 {
1860         struct mac80211_hwsim_data *data = dat;
1861         *val = data->ps;
1862         return 0;
1863 }
1864
1865 static int hwsim_fops_ps_write(void *dat, u64 val)
1866 {
1867         struct mac80211_hwsim_data *data = dat;
1868         enum ps_mode old_ps;
1869
1870         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1871             val != PS_MANUAL_POLL)
1872                 return -EINVAL;
1873
1874         old_ps = data->ps;
1875         data->ps = val;
1876
1877         if (val == PS_MANUAL_POLL) {
1878                 ieee80211_iterate_active_interfaces(data->hw,
1879                                                     IEEE80211_IFACE_ITER_NORMAL,
1880                                                     hwsim_send_ps_poll, data);
1881                 data->ps_poll_pending = true;
1882         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1883                 ieee80211_iterate_active_interfaces(data->hw,
1884                                                     IEEE80211_IFACE_ITER_NORMAL,
1885                                                     hwsim_send_nullfunc_ps,
1886                                                     data);
1887         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1888                 ieee80211_iterate_active_interfaces(data->hw,
1889                                                     IEEE80211_IFACE_ITER_NORMAL,
1890                                                     hwsim_send_nullfunc_no_ps,
1891                                                     data);
1892         }
1893
1894         return 0;
1895 }
1896
1897 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1898                         "%llu\n");
1899
1900 static int hwsim_write_simulate_radar(void *dat, u64 val)
1901 {
1902         struct mac80211_hwsim_data *data = dat;
1903
1904         ieee80211_radar_detected(data->hw);
1905
1906         return 0;
1907 }
1908
1909 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
1910                         hwsim_write_simulate_radar, "%llu\n");
1911
1912 static int hwsim_fops_group_read(void *dat, u64 *val)
1913 {
1914         struct mac80211_hwsim_data *data = dat;
1915         *val = data->group;
1916         return 0;
1917 }
1918
1919 static int hwsim_fops_group_write(void *dat, u64 val)
1920 {
1921         struct mac80211_hwsim_data *data = dat;
1922         data->group = val;
1923         return 0;
1924 }
1925
1926 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1927                         hwsim_fops_group_read, hwsim_fops_group_write,
1928                         "%llx\n");
1929
1930 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1931                              struct mac_address *addr)
1932 {
1933         struct mac80211_hwsim_data *data;
1934         bool _found = false;
1935
1936         spin_lock_bh(&hwsim_radio_lock);
1937         list_for_each_entry(data, &hwsim_radios, list) {
1938                 if (memcmp(data->addresses[1].addr, addr,
1939                           sizeof(struct mac_address)) == 0) {
1940                         _found = true;
1941                         break;
1942                 }
1943         }
1944         spin_unlock_bh(&hwsim_radio_lock);
1945
1946         if (!_found)
1947                 return NULL;
1948
1949         return data;
1950 }
1951
1952 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1953                                            struct genl_info *info)
1954 {
1955
1956         struct ieee80211_hdr *hdr;
1957         struct mac80211_hwsim_data *data2;
1958         struct ieee80211_tx_info *txi;
1959         struct hwsim_tx_rate *tx_attempts;
1960         unsigned long ret_skb_ptr;
1961         struct sk_buff *skb, *tmp;
1962         struct mac_address *src;
1963         unsigned int hwsim_flags;
1964
1965         int i;
1966         bool found = false;
1967
1968         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1969            !info->attrs[HWSIM_ATTR_FLAGS] ||
1970            !info->attrs[HWSIM_ATTR_COOKIE] ||
1971            !info->attrs[HWSIM_ATTR_TX_INFO])
1972                 goto out;
1973
1974         src = (struct mac_address *)nla_data(
1975                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1976         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1977
1978         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1979
1980         data2 = get_hwsim_data_ref_from_addr(src);
1981
1982         if (data2 == NULL)
1983                 goto out;
1984
1985         /* look for the skb matching the cookie passed back from user */
1986         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1987                 if ((unsigned long)skb == ret_skb_ptr) {
1988                         skb_unlink(skb, &data2->pending);
1989                         found = true;
1990                         break;
1991                 }
1992         }
1993
1994         /* not found */
1995         if (!found)
1996                 goto out;
1997
1998         /* Tx info received because the frame was broadcasted on user space,
1999          so we get all the necessary info: tx attempts and skb control buff */
2000
2001         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2002                        info->attrs[HWSIM_ATTR_TX_INFO]);
2003
2004         /* now send back TX status */
2005         txi = IEEE80211_SKB_CB(skb);
2006
2007         ieee80211_tx_info_clear_status(txi);
2008
2009         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2010                 txi->status.rates[i].idx = tx_attempts[i].idx;
2011                 txi->status.rates[i].count = tx_attempts[i].count;
2012                 /*txi->status.rates[i].flags = 0;*/
2013         }
2014
2015         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2016
2017         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2018            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2019                 if (skb->len >= 16) {
2020                         hdr = (struct ieee80211_hdr *) skb->data;
2021                         mac80211_hwsim_monitor_ack(data2->channel,
2022                                                    hdr->addr2);
2023                 }
2024                 txi->flags |= IEEE80211_TX_STAT_ACK;
2025         }
2026         ieee80211_tx_status_irqsafe(data2->hw, skb);
2027         return 0;
2028 out:
2029         return -EINVAL;
2030
2031 }
2032
2033 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2034                                           struct genl_info *info)
2035 {
2036
2037         struct mac80211_hwsim_data *data2;
2038         struct ieee80211_rx_status rx_status;
2039         struct mac_address *dst;
2040         int frame_data_len;
2041         char *frame_data;
2042         struct sk_buff *skb = NULL;
2043
2044         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2045             !info->attrs[HWSIM_ATTR_FRAME] ||
2046             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2047             !info->attrs[HWSIM_ATTR_SIGNAL])
2048                 goto out;
2049
2050         dst = (struct mac_address *)nla_data(
2051                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2052
2053         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2054         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2055
2056         /* Allocate new skb here */
2057         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2058         if (skb == NULL)
2059                 goto err;
2060
2061         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
2062                 /* Copy the data */
2063                 memcpy(skb_put(skb, frame_data_len), frame_data,
2064                        frame_data_len);
2065         } else
2066                 goto err;
2067
2068         data2 = get_hwsim_data_ref_from_addr(dst);
2069
2070         if (data2 == NULL)
2071                 goto out;
2072
2073         /* check if radio is configured properly */
2074
2075         if (data2->idle || !data2->started)
2076                 goto out;
2077
2078         /*A frame is received from user space*/
2079         memset(&rx_status, 0, sizeof(rx_status));
2080         rx_status.freq = data2->channel->center_freq;
2081         rx_status.band = data2->channel->band;
2082         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2083         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2084
2085         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2086         ieee80211_rx_irqsafe(data2->hw, skb);
2087
2088         return 0;
2089 err:
2090         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2091         goto out;
2092 out:
2093         dev_kfree_skb(skb);
2094         return -EINVAL;
2095 }
2096
2097 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2098                                       struct genl_info *info)
2099 {
2100         if (info == NULL)
2101                 goto out;
2102
2103         wmediumd_portid = info->snd_portid;
2104
2105         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2106                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2107
2108         return 0;
2109 out:
2110         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2111         return -EINVAL;
2112 }
2113
2114 /* Generic Netlink operations array */
2115 static const struct genl_ops hwsim_ops[] = {
2116         {
2117                 .cmd = HWSIM_CMD_REGISTER,
2118                 .policy = hwsim_genl_policy,
2119                 .doit = hwsim_register_received_nl,
2120                 .flags = GENL_ADMIN_PERM,
2121         },
2122         {
2123                 .cmd = HWSIM_CMD_FRAME,
2124                 .policy = hwsim_genl_policy,
2125                 .doit = hwsim_cloned_frame_received_nl,
2126         },
2127         {
2128                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2129                 .policy = hwsim_genl_policy,
2130                 .doit = hwsim_tx_info_frame_received_nl,
2131         },
2132 };
2133
2134 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2135                                          unsigned long state,
2136                                          void *_notify)
2137 {
2138         struct netlink_notify *notify = _notify;
2139
2140         if (state != NETLINK_URELEASE)
2141                 return NOTIFY_DONE;
2142
2143         if (notify->portid == wmediumd_portid) {
2144                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2145                        " socket, switching to perfect channel medium\n");
2146                 wmediumd_portid = 0;
2147         }
2148         return NOTIFY_DONE;
2149
2150 }
2151
2152 static struct notifier_block hwsim_netlink_notifier = {
2153         .notifier_call = mac80211_hwsim_netlink_notify,
2154 };
2155
2156 static int hwsim_init_netlink(void)
2157 {
2158         int rc;
2159
2160         /* userspace test API hasn't been adjusted for multi-channel */
2161         if (channels > 1)
2162                 return 0;
2163
2164         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2165
2166         rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2167         if (rc)
2168                 goto failure;
2169
2170         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2171         if (rc)
2172                 goto failure;
2173
2174         return 0;
2175
2176 failure:
2177         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2178         return -EINVAL;
2179 }
2180
2181 static void hwsim_exit_netlink(void)
2182 {
2183         int ret;
2184
2185         /* userspace test API hasn't been adjusted for multi-channel */
2186         if (channels > 1)
2187                 return;
2188
2189         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2190         /* unregister the notifier */
2191         netlink_unregister_notifier(&hwsim_netlink_notifier);
2192         /* unregister the family */
2193         ret = genl_unregister_family(&hwsim_genl_family);
2194         if (ret)
2195                 printk(KERN_DEBUG "mac80211_hwsim: "
2196                        "unregister family %i\n", ret);
2197 }
2198
2199 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2200         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2201         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2202                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2203 #ifdef CONFIG_MAC80211_MESH
2204                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2205 #endif
2206                                  BIT(NL80211_IFTYPE_AP) |
2207                                  BIT(NL80211_IFTYPE_P2P_GO) },
2208         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2209 };
2210
2211 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
2212         { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
2213 };
2214
2215 static struct ieee80211_iface_combination hwsim_if_comb[] = {
2216         {
2217                 .limits = hwsim_if_limits,
2218                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
2219                 .max_interfaces = 2048,
2220                 .num_different_channels = 1,
2221         },
2222         {
2223                 .limits = hwsim_if_dfs_limits,
2224                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
2225                 .max_interfaces = 8,
2226                 .num_different_channels = 1,
2227                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2228                                        BIT(NL80211_CHAN_WIDTH_20) |
2229                                        BIT(NL80211_CHAN_WIDTH_40) |
2230                                        BIT(NL80211_CHAN_WIDTH_80) |
2231                                        BIT(NL80211_CHAN_WIDTH_160),
2232         }
2233 };
2234
2235 static int __init init_mac80211_hwsim(void)
2236 {
2237         int i, err = 0;
2238         u8 addr[ETH_ALEN];
2239         struct mac80211_hwsim_data *data;
2240         struct ieee80211_hw *hw;
2241         enum ieee80211_band band;
2242
2243         if (radios < 1 || radios > 100)
2244                 return -EINVAL;
2245
2246         if (channels < 1)
2247                 return -EINVAL;
2248
2249         if (channels > 1) {
2250                 hwsim_if_comb[0].num_different_channels = channels;
2251                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2252                 mac80211_hwsim_ops.cancel_hw_scan =
2253                         mac80211_hwsim_cancel_hw_scan;
2254                 mac80211_hwsim_ops.sw_scan_start = NULL;
2255                 mac80211_hwsim_ops.sw_scan_complete = NULL;
2256                 mac80211_hwsim_ops.remain_on_channel =
2257                         mac80211_hwsim_roc;
2258                 mac80211_hwsim_ops.cancel_remain_on_channel =
2259                         mac80211_hwsim_croc;
2260                 mac80211_hwsim_ops.add_chanctx =
2261                         mac80211_hwsim_add_chanctx;
2262                 mac80211_hwsim_ops.remove_chanctx =
2263                         mac80211_hwsim_remove_chanctx;
2264                 mac80211_hwsim_ops.change_chanctx =
2265                         mac80211_hwsim_change_chanctx;
2266                 mac80211_hwsim_ops.assign_vif_chanctx =
2267                         mac80211_hwsim_assign_vif_chanctx;
2268                 mac80211_hwsim_ops.unassign_vif_chanctx =
2269                         mac80211_hwsim_unassign_vif_chanctx;
2270         }
2271
2272         spin_lock_init(&hwsim_radio_lock);
2273         INIT_LIST_HEAD(&hwsim_radios);
2274
2275         err = platform_driver_register(&mac80211_hwsim_driver);
2276         if (err)
2277                 return err;
2278
2279         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2280         if (IS_ERR(hwsim_class)) {
2281                 err = PTR_ERR(hwsim_class);
2282                 goto failed_unregister_driver;
2283         }
2284
2285         memset(addr, 0, ETH_ALEN);
2286         addr[0] = 0x02;
2287
2288         for (i = 0; i < radios; i++) {
2289                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2290                        i);
2291                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2292                 if (!hw) {
2293                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2294                                "failed\n");
2295                         err = -ENOMEM;
2296                         goto failed;
2297                 }
2298                 data = hw->priv;
2299                 data->hw = hw;
2300
2301                 data->dev = device_create(hwsim_class, NULL, 0, hw,
2302                                           "hwsim%d", i);
2303                 if (IS_ERR(data->dev)) {
2304                         printk(KERN_DEBUG
2305                                "mac80211_hwsim: device_create failed (%ld)\n",
2306                                PTR_ERR(data->dev));
2307                         err = -ENOMEM;
2308                         goto failed_drvdata;
2309                 }
2310                 data->dev->driver = &mac80211_hwsim_driver.driver;
2311                 err = device_bind_driver(data->dev);
2312                 if (err != 0) {
2313                         printk(KERN_DEBUG
2314                                "mac80211_hwsim: device_bind_driver failed (%d)\n",
2315                                err);
2316                         goto failed_hw;
2317                 }
2318
2319                 skb_queue_head_init(&data->pending);
2320
2321                 SET_IEEE80211_DEV(hw, data->dev);
2322                 addr[3] = i >> 8;
2323                 addr[4] = i;
2324                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2325                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2326                 data->addresses[1].addr[0] |= 0x40;
2327                 hw->wiphy->n_addresses = 2;
2328                 hw->wiphy->addresses = data->addresses;
2329
2330                 hw->wiphy->iface_combinations = hwsim_if_comb;
2331                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2332
2333                 if (channels > 1) {
2334                         hw->wiphy->max_scan_ssids = 255;
2335                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2336                         hw->wiphy->max_remain_on_channel_duration = 1000;
2337                         /* For channels > 1 DFS is not allowed */
2338                         hw->wiphy->n_iface_combinations = 1;
2339                 }
2340
2341                 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2342                 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2343
2344                 hw->channel_change_time = 1;
2345                 hw->queues = 5;
2346                 hw->offchannel_tx_hw_queue = 4;
2347                 hw->wiphy->interface_modes =
2348                         BIT(NL80211_IFTYPE_STATION) |
2349                         BIT(NL80211_IFTYPE_AP) |
2350                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
2351                         BIT(NL80211_IFTYPE_P2P_GO) |
2352                         BIT(NL80211_IFTYPE_ADHOC) |
2353                         BIT(NL80211_IFTYPE_MESH_POINT) |
2354                         BIT(NL80211_IFTYPE_P2P_DEVICE);
2355
2356                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2357                             IEEE80211_HW_SIGNAL_DBM |
2358                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2359                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2360                             IEEE80211_HW_AMPDU_AGGREGATION |
2361                             IEEE80211_HW_WANT_MONITOR_VIF |
2362                             IEEE80211_HW_QUEUE_CONTROL |
2363                             IEEE80211_HW_SUPPORTS_HT_CCK_RATES;
2364                 if (rctbl)
2365                         hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2366
2367                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2368                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2369                                     WIPHY_FLAG_AP_UAPSD;
2370                 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
2371
2372                 /* ask mac80211 to reserve space for magic */
2373                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2374                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2375                 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2376
2377                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2378                         sizeof(hwsim_channels_2ghz));
2379                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2380                         sizeof(hwsim_channels_5ghz));
2381                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2382
2383                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2384                         struct ieee80211_supported_band *sband = &data->bands[band];
2385                         switch (band) {
2386                         case IEEE80211_BAND_2GHZ:
2387                                 sband->channels = data->channels_2ghz;
2388                                 sband->n_channels =
2389                                         ARRAY_SIZE(hwsim_channels_2ghz);
2390                                 sband->bitrates = data->rates;
2391                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2392                                 break;
2393                         case IEEE80211_BAND_5GHZ:
2394                                 sband->channels = data->channels_5ghz;
2395                                 sband->n_channels =
2396                                         ARRAY_SIZE(hwsim_channels_5ghz);
2397                                 sband->bitrates = data->rates + 4;
2398                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2399                                 break;
2400                         default:
2401                                 continue;
2402                         }
2403
2404                         sband->ht_cap.ht_supported = true;
2405                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2406                                 IEEE80211_HT_CAP_GRN_FLD |
2407                                 IEEE80211_HT_CAP_SGI_40 |
2408                                 IEEE80211_HT_CAP_DSSSCCK40;
2409                         sband->ht_cap.ampdu_factor = 0x3;
2410                         sband->ht_cap.ampdu_density = 0x6;
2411                         memset(&sband->ht_cap.mcs, 0,
2412                                sizeof(sband->ht_cap.mcs));
2413                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
2414                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
2415                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2416
2417                         hw->wiphy->bands[band] = sband;
2418
2419                         sband->vht_cap.vht_supported = true;
2420                         sband->vht_cap.cap =
2421                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2422                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2423                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2424                                 IEEE80211_VHT_CAP_RXLDPC |
2425                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2426                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2427                                 IEEE80211_VHT_CAP_TXSTBC |
2428                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2429                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2430                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2431                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2432                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2433                         sband->vht_cap.vht_mcs.rx_mcs_map =
2434                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2435                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2436                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2437                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2438                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2439                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2440                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2441                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2442                         sband->vht_cap.vht_mcs.tx_mcs_map =
2443                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2444                 }
2445                 /* By default all radios are belonging to the first group */
2446                 data->group = 1;
2447                 mutex_init(&data->mutex);
2448
2449                 /* Enable frame retransmissions for lossy channels */
2450                 hw->max_rates = 4;
2451                 hw->max_rate_tries = 11;
2452
2453                 /* Work to be done prior to ieee80211_register_hw() */
2454                 switch (regtest) {
2455                 case HWSIM_REGTEST_DISABLED:
2456                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2457                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2458                 case HWSIM_REGTEST_DIFF_COUNTRY:
2459                         /*
2460                          * Nothing to be done for driver regulatory domain
2461                          * hints prior to ieee80211_register_hw()
2462                          */
2463                         break;
2464                 case HWSIM_REGTEST_WORLD_ROAM:
2465                         if (i == 0) {
2466                                 hw->wiphy->regulatory_flags |=
2467                                         REGULATORY_CUSTOM_REG;
2468                                 wiphy_apply_custom_regulatory(hw->wiphy,
2469                                         &hwsim_world_regdom_custom_01);
2470                         }
2471                         break;
2472                 case HWSIM_REGTEST_CUSTOM_WORLD:
2473                         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2474                         wiphy_apply_custom_regulatory(hw->wiphy,
2475                                 &hwsim_world_regdom_custom_01);
2476                         break;
2477                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2478                         if (i == 0) {
2479                                 hw->wiphy->regulatory_flags |=
2480                                         REGULATORY_CUSTOM_REG;
2481                                 wiphy_apply_custom_regulatory(hw->wiphy,
2482                                         &hwsim_world_regdom_custom_01);
2483                         } else if (i == 1) {
2484                                 hw->wiphy->regulatory_flags |=
2485                                         REGULATORY_CUSTOM_REG;
2486                                 wiphy_apply_custom_regulatory(hw->wiphy,
2487                                         &hwsim_world_regdom_custom_02);
2488                         }
2489                         break;
2490                 case HWSIM_REGTEST_STRICT_ALL:
2491                         hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2492                         break;
2493                 case HWSIM_REGTEST_STRICT_FOLLOW:
2494                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2495                         if (i == 0)
2496                                 hw->wiphy->regulatory_flags |=
2497                                         REGULATORY_STRICT_REG;
2498                         break;
2499                 case HWSIM_REGTEST_ALL:
2500                         if (i == 0) {
2501                                 hw->wiphy->regulatory_flags |=
2502                                         REGULATORY_CUSTOM_REG;
2503                                 wiphy_apply_custom_regulatory(hw->wiphy,
2504                                         &hwsim_world_regdom_custom_01);
2505                         } else if (i == 1) {
2506                                 hw->wiphy->regulatory_flags |=
2507                                         REGULATORY_CUSTOM_REG;
2508                                 wiphy_apply_custom_regulatory(hw->wiphy,
2509                                         &hwsim_world_regdom_custom_02);
2510                         } else if (i == 4)
2511                                 hw->wiphy->regulatory_flags |=
2512                                         REGULATORY_STRICT_REG;
2513                         break;
2514                 default:
2515                         break;
2516                 }
2517
2518                 /* give the regulatory workqueue a chance to run */
2519                 if (regtest)
2520                         schedule_timeout_interruptible(1);
2521                 err = ieee80211_register_hw(hw);
2522                 if (err < 0) {
2523                         printk(KERN_DEBUG "mac80211_hwsim: "
2524                                "ieee80211_register_hw failed (%d)\n", err);
2525                         goto failed_hw;
2526                 }
2527
2528                 /* Work to be done after to ieee80211_register_hw() */
2529                 switch (regtest) {
2530                 case HWSIM_REGTEST_WORLD_ROAM:
2531                 case HWSIM_REGTEST_DISABLED:
2532                         break;
2533                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2534                         if (!i)
2535                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2536                         break;
2537                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2538                 case HWSIM_REGTEST_STRICT_ALL:
2539                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2540                         break;
2541                 case HWSIM_REGTEST_DIFF_COUNTRY:
2542                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2543                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2544                         break;
2545                 case HWSIM_REGTEST_CUSTOM_WORLD:
2546                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2547                         /*
2548                          * Nothing to be done for custom world regulatory
2549                          * domains after to ieee80211_register_hw
2550                          */
2551                         break;
2552                 case HWSIM_REGTEST_STRICT_FOLLOW:
2553                         if (i == 0)
2554                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2555                         break;
2556                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2557                         if (i == 0)
2558                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2559                         else if (i == 1)
2560                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2561                         break;
2562                 case HWSIM_REGTEST_ALL:
2563                         if (i == 2)
2564                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2565                         else if (i == 3)
2566                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2567                         else if (i == 4)
2568                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2569                         break;
2570                 default:
2571                         break;
2572                 }
2573
2574                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2575                             hw->wiphy->perm_addr);
2576
2577                 data->debugfs = debugfs_create_dir("hwsim",
2578                                                    hw->wiphy->debugfsdir);
2579                 debugfs_create_file("ps", 0666, data->debugfs, data,
2580                                     &hwsim_fops_ps);
2581                 debugfs_create_file("group", 0666, data->debugfs, data,
2582                                     &hwsim_fops_group);
2583                 if (channels == 1)
2584                         debugfs_create_file("dfs_simulate_radar", 0222,
2585                                             data->debugfs,
2586                                             data, &hwsim_simulate_radar);
2587
2588                 tasklet_hrtimer_init(&data->beacon_timer,
2589                                      mac80211_hwsim_beacon,
2590                                      CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2591
2592                 list_add_tail(&data->list, &hwsim_radios);
2593         }
2594
2595         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2596         if (hwsim_mon == NULL) {
2597                 err = -ENOMEM;
2598                 goto failed;
2599         }
2600
2601         rtnl_lock();
2602
2603         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2604         if (err < 0)
2605                 goto failed_mon;
2606
2607
2608         err = register_netdevice(hwsim_mon);
2609         if (err < 0)
2610                 goto failed_mon;
2611
2612         rtnl_unlock();
2613
2614         err = hwsim_init_netlink();
2615         if (err < 0)
2616                 goto failed_nl;
2617
2618         return 0;
2619
2620 failed_nl:
2621         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2622         return err;
2623
2624 failed_mon:
2625         rtnl_unlock();
2626         free_netdev(hwsim_mon);
2627         mac80211_hwsim_free();
2628         return err;
2629
2630 failed_hw:
2631         device_unregister(data->dev);
2632 failed_drvdata:
2633         ieee80211_free_hw(hw);
2634 failed:
2635         mac80211_hwsim_free();
2636 failed_unregister_driver:
2637         platform_driver_unregister(&mac80211_hwsim_driver);
2638         return err;
2639 }
2640 module_init(init_mac80211_hwsim);
2641
2642 static void __exit exit_mac80211_hwsim(void)
2643 {
2644         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2645
2646         hwsim_exit_netlink();
2647
2648         mac80211_hwsim_free();
2649         unregister_netdev(hwsim_mon);
2650         platform_driver_unregister(&mac80211_hwsim_driver);
2651 }
2652 module_exit(exit_mac80211_hwsim);