drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include "mac80211_hwsim.h"
  34
  35 #define WARN_QUEUE 100
  36 #define MAX_QUEUE 200
  37
  38 MODULE_AUTHOR("Jouni Malinen");
  39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  40 MODULE_LICENSE("GPL");
  41
  42 static u32 wmediumd_portid;
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 /**
  61  * enum hwsim_regtest - the type of regulatory tests we offer
  62  *
  63  * These are the different values you can use for the regtest
  64  * module parameter. This is useful to help test world roaming
  65  * and the driver regulatory_hint() call and combinations of these.
  66  * If you want to do specific alpha2 regulatory domain tests simply
  67  * use the userspace regulatory request as that will be respected as
  68  * well without the need of this module parameter. This is designed
  69  * only for testing the driver regulatory request, world roaming
  70  * and all possible combinations.
  71  *
  72  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  73  *      this is the default value.
  74  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  75  *      hint, only one driver regulatory hint will be sent as such the
  76  *      secondary radios are expected to follow.
  77  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  78  *      request with all radios reporting the same regulatory domain.
  79  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  80  *      different regulatory domains requests. Expected behaviour is for
  81  *      an intersection to occur but each device will still use their
  82  *      respective regulatory requested domains. Subsequent radios will
  83  *      use the resulting intersection.
  84  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  85  *      this by using a custom beacon-capable regulatory domain for the first
  86  *      radio. All other device world roam.
  87  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  88  *      domain requests. All radios will adhere to this custom world regulatory
  89  *      domain.
  90  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  91  *      domain requests. The first radio will adhere to the first custom world
  92  *      regulatory domain, the second one to the second custom world regulatory
  93  *      domain. All other devices will world roam.
  94  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  95  *      settings, only the first radio will send a regulatory domain request
  96  *      and use strict settings. The rest of the radios are expected to follow.
  97  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  98  *      settings. All radios will adhere to this.
  99  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 100  *      domain settings, combined with secondary driver regulatory domain
 101  *      settings. The first radio will get a strict regulatory domain setting
 102  *      using the first driver regulatory request and the second radio will use
 103  *      non-strict settings using the second driver regulatory request. All
 104  *      other devices should follow the intersection created between the
 105  *      first two.
 106  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 107  *      at least 6 radios for a complete test. We will test in this order:
 108  *      1 - driver custom world regulatory domain
 109  *      2 - second custom world regulatory domain
 110  *      3 - first driver regulatory domain request
 111  *      4 - second driver regulatory domain request
 112  *      5 - strict regulatory domain settings using the third driver regulatory
 113  *          domain request
 114  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 115  *                 regulatory requests.
 116  */
 117 enum hwsim_regtest {
 118         HWSIM_REGTEST_DISABLED = 0,
 119         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 120         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 121         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 122         HWSIM_REGTEST_WORLD_ROAM = 4,
 123         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 124         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 125         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 126         HWSIM_REGTEST_STRICT_ALL = 8,
 127         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 128         HWSIM_REGTEST_ALL = 10,
 129 };
 130
 131 /* Set to one of the HWSIM_REGTEST_* values above */
 132 static int regtest = HWSIM_REGTEST_DISABLED;
 133 module_param(regtest, int, 0444);
 134 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 135
 136 static const char *hwsim_alpha2s[] = {
 137         "FI",
 138         "AL",
 139         "US",
 140         "DE",
 141         "JP",
 142         "AL",
 143 };
 144
 145 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 146         .n_reg_rules = 4,
 147         .alpha2 =  "99",
 148         .reg_rules = {
 149                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 150                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 151                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 152                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 153         }
 154 };
 155
 156 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 157         .n_reg_rules = 2,
 158         .alpha2 =  "99",
 159         .reg_rules = {
 160                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 161                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 162                         NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 163         }
 164 };
 165
 166 struct hwsim_vif_priv {
 167         u32 magic;
 168         u8 bssid[ETH_ALEN];
 169         bool assoc;
 170         bool bcn_en;
 171         u16 aid;
 172 };
 173
 174 #define HWSIM_VIF_MAGIC 0x69537748
 175
 176 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 177 {
 178         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 179         WARN(vp->magic != HWSIM_VIF_MAGIC,
 180              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 181              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 182 }
 183
 184 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 185 {
 186         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 187         vp->magic = HWSIM_VIF_MAGIC;
 188 }
 189
 190 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 191 {
 192         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 193         vp->magic = 0;
 194 }
 195
 196 struct hwsim_sta_priv {
 197         u32 magic;
 198 };
 199
 200 #define HWSIM_STA_MAGIC 0x6d537749
 201
 202 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 203 {
 204         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 205         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 206 }
 207
 208 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 209 {
 210         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 211         sp->magic = HWSIM_STA_MAGIC;
 212 }
 213
 214 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 215 {
 216         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 217         sp->magic = 0;
 218 }
 219
 220 struct hwsim_chanctx_priv {
 221         u32 magic;
 222 };
 223
 224 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 225
 226 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 227 {
 228         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 229         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 230 }
 231
 232 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 233 {
 234         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 235         cp->magic = HWSIM_CHANCTX_MAGIC;
 236 }
 237
 238 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 239 {
 240         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 241         cp->magic = 0;
 242 }
 243
 244 static struct class *hwsim_class;
 245
 246 static struct net_device *hwsim_mon; /* global monitor netdev */
 247
 248 #define CHAN2G(_freq)  { \
 249         .band = IEEE80211_BAND_2GHZ, \
 250         .center_freq = (_freq), \
 251         .hw_value = (_freq), \
 252         .max_power = 20, \
 253 }
 254
 255 #define CHAN5G(_freq) { \
 256         .band = IEEE80211_BAND_5GHZ, \
 257         .center_freq = (_freq), \
 258         .hw_value = (_freq), \
 259         .max_power = 20, \
 260 }
 261
 262 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 263         CHAN2G(2412), /* Channel 1 */
 264         CHAN2G(2417), /* Channel 2 */
 265         CHAN2G(2422), /* Channel 3 */
 266         CHAN2G(2427), /* Channel 4 */
 267         CHAN2G(2432), /* Channel 5 */
 268         CHAN2G(2437), /* Channel 6 */
 269         CHAN2G(2442), /* Channel 7 */
 270         CHAN2G(2447), /* Channel 8 */
 271         CHAN2G(2452), /* Channel 9 */
 272         CHAN2G(2457), /* Channel 10 */
 273         CHAN2G(2462), /* Channel 11 */
 274         CHAN2G(2467), /* Channel 12 */
 275         CHAN2G(2472), /* Channel 13 */
 276         CHAN2G(2484), /* Channel 14 */
 277 };
 278
 279 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 280         CHAN5G(5180), /* Channel 36 */
 281         CHAN5G(5200), /* Channel 40 */
 282         CHAN5G(5220), /* Channel 44 */
 283         CHAN5G(5240), /* Channel 48 */
 284
 285         CHAN5G(5260), /* Channel 52 */
 286         CHAN5G(5280), /* Channel 56 */
 287         CHAN5G(5300), /* Channel 60 */
 288         CHAN5G(5320), /* Channel 64 */
 289
 290         CHAN5G(5500), /* Channel 100 */
 291         CHAN5G(5520), /* Channel 104 */
 292         CHAN5G(5540), /* Channel 108 */
 293         CHAN5G(5560), /* Channel 112 */
 294         CHAN5G(5580), /* Channel 116 */
 295         CHAN5G(5600), /* Channel 120 */
 296         CHAN5G(5620), /* Channel 124 */
 297         CHAN5G(5640), /* Channel 128 */
 298         CHAN5G(5660), /* Channel 132 */
 299         CHAN5G(5680), /* Channel 136 */
 300         CHAN5G(5700), /* Channel 140 */
 301
 302         CHAN5G(5745), /* Channel 149 */
 303         CHAN5G(5765), /* Channel 153 */
 304         CHAN5G(5785), /* Channel 157 */
 305         CHAN5G(5805), /* Channel 161 */
 306         CHAN5G(5825), /* Channel 165 */
 307 };
 308
 309 static const struct ieee80211_rate hwsim_rates[] = {
 310         { .bitrate = 10 },
 311         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 312         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 313         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 314         { .bitrate = 60 },
 315         { .bitrate = 90 },
 316         { .bitrate = 120 },
 317         { .bitrate = 180 },
 318         { .bitrate = 240 },
 319         { .bitrate = 360 },
 320         { .bitrate = 480 },
 321         { .bitrate = 540 }
 322 };
 323
 324 static spinlock_t hwsim_radio_lock;
 325 static struct list_head hwsim_radios;
 326
 327 struct mac80211_hwsim_data {
 328         struct list_head list;
 329         struct ieee80211_hw *hw;
 330         struct device *dev;
 331         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 332         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 333         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 334         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 335
 336         struct mac_address addresses[2];
 337
 338         struct ieee80211_channel *tmp_chan;
 339         struct delayed_work roc_done;
 340         struct delayed_work hw_scan;
 341         struct cfg80211_scan_request *hw_scan_request;
 342         struct ieee80211_vif *hw_scan_vif;
 343         int scan_chan_idx;
 344
 345         struct ieee80211_channel *channel;
 346         u64 beacon_int  /* beacon interval in us */;
 347         unsigned int rx_filter;
 348         bool started, idle, scanning;
 349         struct mutex mutex;
 350         struct tasklet_hrtimer beacon_timer;
 351         enum ps_mode {
 352                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 353         } ps;
 354         bool ps_poll_pending;
 355         struct dentry *debugfs;
 356         struct dentry *debugfs_ps;
 357
 358         struct sk_buff_head pending;    /* packets pending */
 359         /*
 360          * Only radios in the same group can communicate together (the
 361          * channel has to match too). Each bit represents a group. A
 362          * radio can be in more then one group.
 363          */
 364         u64 group;
 365         struct dentry *debugfs_group;
 366
 367         int power_level;
 368
 369         /* difference between this hw's clock and the real clock, in usecs */
 370         s64 tsf_offset;
 371         s64 bcn_delta;
 372         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 373         u64 abs_bcn_ts;
 374 };
 375
 376
 377 struct hwsim_radiotap_hdr {
 378         struct ieee80211_radiotap_header hdr;
 379         __le64 rt_tsft;
 380         u8 rt_flags;
 381         u8 rt_rate;
 382         __le16 rt_channel;
 383         __le16 rt_chbitmask;
 384 } __packed;
 385
 386 /* MAC80211_HWSIM netlinf family */
 387 static struct genl_family hwsim_genl_family = {
 388         .id = GENL_ID_GENERATE,
 389         .hdrsize = 0,
 390         .name = "MAC80211_HWSIM",
 391         .version = 1,
 392         .maxattr = HWSIM_ATTR_MAX,
 393 };
 394
 395 /* MAC80211_HWSIM netlink policy */
 396
 397 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 398         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 399                                        .len = 6*sizeof(u8) },
 400         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 401                                           .len = 6*sizeof(u8) },
 402         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 403                                .len = IEEE80211_MAX_DATA_LEN },
 404         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 405         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 406         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 407         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 408                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 409                                         struct hwsim_tx_rate)},
 410         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 411 };
 412
 413 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 414                                         struct net_device *dev)
 415 {
 416         /* TODO: allow packet injection */
 417         dev_kfree_skb(skb);
 418         return NETDEV_TX_OK;
 419 }
 420
 421 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 422 {
 423         return ktime_to_us(ktime_get_real());
 424 }
 425
 426 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 427 {
 428         u64 now = mac80211_hwsim_get_tsf_raw();
 429         return cpu_to_le64(now + data->tsf_offset);
 430 }
 431
 432 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 433                                   struct ieee80211_vif *vif)
 434 {
 435         struct mac80211_hwsim_data *data = hw->priv;
 436         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 437 }
 438
 439 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 440                 struct ieee80211_vif *vif, u64 tsf)
 441 {
 442         struct mac80211_hwsim_data *data = hw->priv;
 443         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 444         u32 bcn_int = data->beacon_int;
 445         s64 delta = tsf - now;
 446
 447         data->tsf_offset += delta;
 448         /* adjust after beaconing with new timestamp at old TBTT */
 449         data->bcn_delta = do_div(delta, bcn_int);
 450 }
 451
 452 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 453                                       struct sk_buff *tx_skb,
 454                                       struct ieee80211_channel *chan)
 455 {
 456         struct mac80211_hwsim_data *data = hw->priv;
 457         struct sk_buff *skb;
 458         struct hwsim_radiotap_hdr *hdr;
 459         u16 flags;
 460         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 461         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 462
 463         if (!netif_running(hwsim_mon))
 464                 return;
 465
 466         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 467         if (skb == NULL)
 468                 return;
 469
 470         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 471         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 472         hdr->hdr.it_pad = 0;
 473         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 474         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 475                                           (1 << IEEE80211_RADIOTAP_RATE) |
 476                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 477                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 478         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 479         hdr->rt_flags = 0;
 480         hdr->rt_rate = txrate->bitrate / 5;
 481         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 482         flags = IEEE80211_CHAN_2GHZ;
 483         if (txrate->flags & IEEE80211_RATE_ERP_G)
 484                 flags |= IEEE80211_CHAN_OFDM;
 485         else
 486                 flags |= IEEE80211_CHAN_CCK;
 487         hdr->rt_chbitmask = cpu_to_le16(flags);
 488
 489         skb->dev = hwsim_mon;
 490         skb_set_mac_header(skb, 0);
 491         skb->ip_summed = CHECKSUM_UNNECESSARY;
 492         skb->pkt_type = PACKET_OTHERHOST;
 493         skb->protocol = htons(ETH_P_802_2);
 494         memset(skb->cb, 0, sizeof(skb->cb));
 495         netif_rx(skb);
 496 }
 497
 498
 499 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 500                                        const u8 *addr)
 501 {
 502         struct sk_buff *skb;
 503         struct hwsim_radiotap_hdr *hdr;
 504         u16 flags;
 505         struct ieee80211_hdr *hdr11;
 506
 507         if (!netif_running(hwsim_mon))
 508                 return;
 509
 510         skb = dev_alloc_skb(100);
 511         if (skb == NULL)
 512                 return;
 513
 514         hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 515         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 516         hdr->hdr.it_pad = 0;
 517         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 518         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 519                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 520         hdr->rt_flags = 0;
 521         hdr->rt_rate = 0;
 522         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 523         flags = IEEE80211_CHAN_2GHZ;
 524         hdr->rt_chbitmask = cpu_to_le16(flags);
 525
 526         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 527         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 528                                            IEEE80211_STYPE_ACK);
 529         hdr11->duration_id = cpu_to_le16(0);
 530         memcpy(hdr11->addr1, addr, ETH_ALEN);
 531
 532         skb->dev = hwsim_mon;
 533         skb_set_mac_header(skb, 0);
 534         skb->ip_summed = CHECKSUM_UNNECESSARY;
 535         skb->pkt_type = PACKET_OTHERHOST;
 536         skb->protocol = htons(ETH_P_802_2);
 537         memset(skb->cb, 0, sizeof(skb->cb));
 538         netif_rx(skb);
 539 }
 540
 541
 542 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 543                            struct sk_buff *skb)
 544 {
 545         switch (data->ps) {
 546         case PS_DISABLED:
 547                 return true;
 548         case PS_ENABLED:
 549                 return false;
 550         case PS_AUTO_POLL:
 551                 /* TODO: accept (some) Beacons by default and other frames only
 552                  * if pending PS-Poll has been sent */
 553                 return true;
 554         case PS_MANUAL_POLL:
 555                 /* Allow unicast frames to own address if there is a pending
 556                  * PS-Poll */
 557                 if (data->ps_poll_pending &&
 558                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 559                            ETH_ALEN) == 0) {
 560                         data->ps_poll_pending = false;
 561                         return true;
 562                 }
 563                 return false;
 564         }
 565
 566         return true;
 567 }
 568
 569
 570 struct mac80211_hwsim_addr_match_data {
 571         bool ret;
 572         const u8 *addr;
 573 };
 574
 575 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 576                                      struct ieee80211_vif *vif)
 577 {
 578         struct mac80211_hwsim_addr_match_data *md = data;
 579         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 580                 md->ret = true;
 581 }
 582
 583
 584 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 585                                       const u8 *addr)
 586 {
 587         struct mac80211_hwsim_addr_match_data md;
 588
 589         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 590                 return true;
 591
 592         md.ret = false;
 593         md.addr = addr;
 594         ieee80211_iterate_active_interfaces_atomic(data->hw,
 595                                                    IEEE80211_IFACE_ITER_NORMAL,
 596                                                    mac80211_hwsim_addr_iter,
 597                                                    &md);
 598
 599         return md.ret;
 600 }
 601
 602 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 603                                        struct sk_buff *my_skb,
 604                                        int dst_portid)
 605 {
 606         struct sk_buff *skb;
 607         struct mac80211_hwsim_data *data = hw->priv;
 608         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 609         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 610         void *msg_head;
 611         unsigned int hwsim_flags = 0;
 612         int i;
 613         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 614
 615         if (data->ps != PS_DISABLED)
 616                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 617         /* If the queue contains MAX_QUEUE skb's drop some */
 618         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 619                 /* Droping until WARN_QUEUE level */
 620                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 621                         skb_dequeue(&data->pending);
 622         }
 623
 624         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 625         if (skb == NULL)
 626                 goto nla_put_failure;
 627
 628         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 629                                HWSIM_CMD_FRAME);
 630         if (msg_head == NULL) {
 631                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 632                 goto nla_put_failure;
 633         }
 634
 635         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 636                     sizeof(struct mac_address), data->addresses[1].addr))
 637                 goto nla_put_failure;
 638
 639         /* We get the skb->data */
 640         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 641                 goto nla_put_failure;
 642
 643         /* We get the flags for this transmission, and we translate them to
 644            wmediumd flags  */
 645
 646         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 647                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 648
 649         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 650                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 651
 652         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 653                 goto nla_put_failure;
 654
 655         /* We get the tx control (rate and retries) info*/
 656
 657         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 658                 tx_attempts[i].idx = info->status.rates[i].idx;
 659                 tx_attempts[i].count = info->status.rates[i].count;
 660         }
 661
 662         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 663                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 664                     tx_attempts))
 665                 goto nla_put_failure;
 666
 667         /* We create a cookie to identify this skb */
 668         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 669                 goto nla_put_failure;
 670
 671         genlmsg_end(skb, msg_head);
 672         genlmsg_unicast(&init_net, skb, dst_portid);
 673
 674         /* Enqueue the packet */
 675         skb_queue_tail(&data->pending, my_skb);
 676         return;
 677
 678 nla_put_failure:
 679         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 680 }
 681
 682 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 683                                struct ieee80211_channel *c2)
 684 {
 685         if (!c1 || !c2)
 686                 return false;
 687
 688         return c1->center_freq == c2->center_freq;
 689 }
 690
 691 struct tx_iter_data {
 692         struct ieee80211_channel *channel;
 693         bool receive;
 694 };
 695
 696 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 697                                    struct ieee80211_vif *vif)
 698 {
 699         struct tx_iter_data *data = _data;
 700
 701         if (!vif->chanctx_conf)
 702                 return;
 703
 704         if (!hwsim_chans_compat(data->channel,
 705                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 706                 return;
 707
 708         data->receive = true;
 709 }
 710
 711 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 712                                           struct sk_buff *skb,
 713                                           struct ieee80211_channel *chan)
 714 {
 715         struct mac80211_hwsim_data *data = hw->priv, *data2;
 716         bool ack = false;
 717         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 718         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 719         struct ieee80211_rx_status rx_status;
 720         u64 now;
 721
 722         memset(&rx_status, 0, sizeof(rx_status));
 723         rx_status.flag |= RX_FLAG_MACTIME_START;
 724         rx_status.freq = chan->center_freq;
 725         rx_status.band = chan->band;
 726         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 727                 rx_status.rate_idx =
 728                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
 729                 rx_status.vht_nss =
 730                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
 731                 rx_status.flag |= RX_FLAG_VHT;
 732         } else {
 733                 rx_status.rate_idx = info->control.rates[0].idx;
 734                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 735                         rx_status.flag |= RX_FLAG_HT;
 736         }
 737         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 738                 rx_status.flag |= RX_FLAG_40MHZ;
 739         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 740                 rx_status.flag |= RX_FLAG_SHORT_GI;
 741         /* TODO: simulate real signal strength (and optional packet loss) */
 742         rx_status.signal = data->power_level - 50;
 743
 744         if (data->ps != PS_DISABLED)
 745                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 746
 747         /* release the skb's source info */
 748         skb_orphan(skb);
 749         skb_dst_drop(skb);
 750         skb->mark = 0;
 751         secpath_reset(skb);
 752         nf_reset(skb);
 753
 754         /*
 755          * Get absolute mactime here so all HWs RX at the "same time", and
 756          * absolute TX time for beacon mactime so the timestamp matches.
 757          * Giving beacons a different mactime than non-beacons looks messy, but
 758          * it helps the Toffset be exact and a ~10us mactime discrepancy
 759          * probably doesn't really matter.
 760          */
 761         if (ieee80211_is_beacon(hdr->frame_control) ||
 762             ieee80211_is_probe_resp(hdr->frame_control))
 763                 now = data->abs_bcn_ts;
 764         else
 765                 now = mac80211_hwsim_get_tsf_raw();
 766
 767         /* Copy skb to all enabled radios that are on the current frequency */
 768         spin_lock(&hwsim_radio_lock);
 769         list_for_each_entry(data2, &hwsim_radios, list) {
 770                 struct sk_buff *nskb;
 771                 struct tx_iter_data tx_iter_data = {
 772                         .receive = false,
 773                         .channel = chan,
 774                 };
 775
 776                 if (data == data2)
 777                         continue;
 778
 779                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 780                     !hwsim_ps_rx_ok(data2, skb))
 781                         continue;
 782
 783                 if (!(data->group & data2->group))
 784                         continue;
 785
 786                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 787                     !hwsim_chans_compat(chan, data2->channel)) {
 788                         ieee80211_iterate_active_interfaces_atomic(
 789                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 790                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 791                         if (!tx_iter_data.receive)
 792                                 continue;
 793                 }
 794
 795                 /*
 796                  * reserve some space for our vendor and the normal
 797                  * radiotap header, since we're copying anyway
 798                  */
 799                 if (skb->len < PAGE_SIZE && paged_rx) {
 800                         struct page *page = alloc_page(GFP_ATOMIC);
 801
 802                         if (!page)
 803                                 continue;
 804
 805                         nskb = dev_alloc_skb(128);
 806                         if (!nskb) {
 807                                 __free_page(page);
 808                                 continue;
 809                         }
 810
 811                         memcpy(page_address(page), skb->data, skb->len);
 812                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 813                 } else {
 814                         nskb = skb_copy(skb, GFP_ATOMIC);
 815                         if (!nskb)
 816                                 continue;
 817                 }
 818
 819                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 820                         ack = true;
 821
 822                 rx_status.mactime = now + data2->tsf_offset;
 823 #if 0
 824                 /*
 825                  * Don't enable this code by default as the OUI 00:00:00
 826                  * is registered to Xerox so we shouldn't use it here, it
 827                  * might find its way into pcap files.
 828                  * Note that this code requires the headroom in the SKB
 829                  * that was allocated earlier.
 830                  */
 831                 rx_status.vendor_radiotap_oui[0] = 0x00;
 832                 rx_status.vendor_radiotap_oui[1] = 0x00;
 833                 rx_status.vendor_radiotap_oui[2] = 0x00;
 834                 rx_status.vendor_radiotap_subns = 127;
 835                 /*
 836                  * Radiotap vendor namespaces can (and should) also be
 837                  * split into fields by using the standard radiotap
 838                  * presence bitmap mechanism. Use just BIT(0) here for
 839                  * the presence bitmap.
 840                  */
 841                 rx_status.vendor_radiotap_bitmap = BIT(0);
 842                 /* We have 8 bytes of (dummy) data */
 843                 rx_status.vendor_radiotap_len = 8;
 844                 /* For testing, also require it to be aligned */
 845                 rx_status.vendor_radiotap_align = 8;
 846                 /* push the data */
 847                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 848 #endif
 849
 850                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 851                 ieee80211_rx_irqsafe(data2->hw, nskb);
 852         }
 853         spin_unlock(&hwsim_radio_lock);
 854
 855         return ack;
 856 }
 857
 858 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 859                               struct ieee80211_tx_control *control,
 860                               struct sk_buff *skb)
 861 {
 862         struct mac80211_hwsim_data *data = hw->priv;
 863         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 864         struct ieee80211_chanctx_conf *chanctx_conf;
 865         struct ieee80211_channel *channel;
 866         bool ack;
 867         u32 _portid;
 868
 869         if (WARN_ON(skb->len < 10)) {
 870                 /* Should not happen; just a sanity check for addr1 use */
 871                 ieee80211_free_txskb(hw, skb);
 872                 return;
 873         }
 874
 875         if (channels == 1) {
 876                 channel = data->channel;
 877         } else if (txi->hw_queue == 4) {
 878                 channel = data->tmp_chan;
 879         } else {
 880                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 881                 if (chanctx_conf)
 882                         channel = chanctx_conf->def.chan;
 883                 else
 884                         channel = NULL;
 885         }
 886
 887         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 888                 ieee80211_free_txskb(hw, skb);
 889                 return;
 890         }
 891
 892         if (data->idle && !data->tmp_chan) {
 893                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 894                 ieee80211_free_txskb(hw, skb);
 895                 return;
 896         }
 897
 898         if (txi->control.vif)
 899                 hwsim_check_magic(txi->control.vif);
 900         if (control->sta)
 901                 hwsim_check_sta_magic(control->sta);
 902
 903         if (rctbl)
 904                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
 905                                        txi->control.rates,
 906                                        ARRAY_SIZE(txi->control.rates));
 907
 908         txi->rate_driver_data[0] = channel;
 909         mac80211_hwsim_monitor_rx(hw, skb, channel);
 910
 911         /* wmediumd mode check */
 912         _portid = ACCESS_ONCE(wmediumd_portid);
 913
 914         if (_portid)
 915                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 916
 917         /* NO wmediumd detected, perfect medium simulation */
 918         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 919
 920         if (ack && skb->len >= 16) {
 921                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 922                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 923         }
 924
 925         ieee80211_tx_info_clear_status(txi);
 926
 927         /* frame was transmitted at most favorable rate at first attempt */
 928         txi->control.rates[0].count = 1;
 929         txi->control.rates[1].idx = -1;
 930
 931         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 932                 txi->flags |= IEEE80211_TX_STAT_ACK;
 933         ieee80211_tx_status_irqsafe(hw, skb);
 934 }
 935
 936
 937 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 938 {
 939         struct mac80211_hwsim_data *data = hw->priv;
 940         wiphy_debug(hw->wiphy, "%s\n", __func__);
 941         data->started = true;
 942         return 0;
 943 }
 944
 945
 946 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 947 {
 948         struct mac80211_hwsim_data *data = hw->priv;
 949         data->started = false;
 950         tasklet_hrtimer_cancel(&data->beacon_timer);
 951         wiphy_debug(hw->wiphy, "%s\n", __func__);
 952 }
 953
 954
 955 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 956                                         struct ieee80211_vif *vif)
 957 {
 958         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 959                     __func__, ieee80211_vif_type_p2p(vif),
 960                     vif->addr);
 961         hwsim_set_magic(vif);
 962
 963         vif->cab_queue = 0;
 964         vif->hw_queue[IEEE80211_AC_VO] = 0;
 965         vif->hw_queue[IEEE80211_AC_VI] = 1;
 966         vif->hw_queue[IEEE80211_AC_BE] = 2;
 967         vif->hw_queue[IEEE80211_AC_BK] = 3;
 968
 969         return 0;
 970 }
 971
 972
 973 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 974                                            struct ieee80211_vif *vif,
 975                                            enum nl80211_iftype newtype,
 976                                            bool newp2p)
 977 {
 978         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 979         wiphy_debug(hw->wiphy,
 980                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 981                     __func__, ieee80211_vif_type_p2p(vif),
 982                     newtype, vif->addr);
 983         hwsim_check_magic(vif);
 984
 985         /*
 986          * interface may change from non-AP to AP in
 987          * which case this needs to be set up again
 988          */
 989         vif->cab_queue = 0;
 990
 991         return 0;
 992 }
 993
 994 static void mac80211_hwsim_remove_interface(
 995         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 996 {
 997         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 998                     __func__, ieee80211_vif_type_p2p(vif),
 999                     vif->addr);
1000         hwsim_check_magic(vif);
1001         hwsim_clear_magic(vif);
1002 }
1003
1004 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1005                                     struct sk_buff *skb,
1006                                     struct ieee80211_channel *chan)
1007 {
1008         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1009
1010         if (rctbl) {
1011                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1012                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1013                                        txi->control.rates,
1014                                        ARRAY_SIZE(txi->control.rates));
1015         }
1016
1017         mac80211_hwsim_monitor_rx(hw, skb, chan);
1018
1019         if (_pid)
1020                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1021
1022         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1023         dev_kfree_skb(skb);
1024 }
1025
1026 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1027                                      struct ieee80211_vif *vif)
1028 {
1029         struct mac80211_hwsim_data *data = arg;
1030         struct ieee80211_hw *hw = data->hw;
1031         struct ieee80211_tx_info *info;
1032         struct ieee80211_rate *txrate;
1033         struct ieee80211_mgmt *mgmt;
1034         struct sk_buff *skb;
1035
1036         hwsim_check_magic(vif);
1037
1038         if (vif->type != NL80211_IFTYPE_AP &&
1039             vif->type != NL80211_IFTYPE_MESH_POINT &&
1040             vif->type != NL80211_IFTYPE_ADHOC)
1041                 return;
1042
1043         skb = ieee80211_beacon_get(hw, vif);
1044         if (skb == NULL)
1045                 return;
1046         info = IEEE80211_SKB_CB(skb);
1047         if (rctbl)
1048                 ieee80211_get_tx_rates(vif, NULL, skb,
1049                                        info->control.rates,
1050                                        ARRAY_SIZE(info->control.rates));
1051
1052         txrate = ieee80211_get_tx_rate(hw, info);
1053
1054         mgmt = (struct ieee80211_mgmt *) skb->data;
1055         /* fake header transmission time */
1056         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1057         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1058                                                data->tsf_offset +
1059                                                24 * 8 * 10 / txrate->bitrate);
1060
1061         mac80211_hwsim_tx_frame(hw, skb,
1062                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1063 }
1064
1065 static enum hrtimer_restart
1066 mac80211_hwsim_beacon(struct hrtimer *timer)
1067 {
1068         struct mac80211_hwsim_data *data =
1069                 container_of(timer, struct mac80211_hwsim_data,
1070                              beacon_timer.timer);
1071         struct ieee80211_hw *hw = data->hw;
1072         u64 bcn_int = data->beacon_int;
1073         ktime_t next_bcn;
1074
1075         if (!data->started)
1076                 goto out;
1077
1078         ieee80211_iterate_active_interfaces_atomic(
1079                 hw, IEEE80211_IFACE_ITER_NORMAL,
1080                 mac80211_hwsim_beacon_tx, data);
1081
1082         /* beacon at new TBTT + beacon interval */
1083         if (data->bcn_delta) {
1084                 bcn_int -= data->bcn_delta;
1085                 data->bcn_delta = 0;
1086         }
1087
1088         next_bcn = ktime_add(hrtimer_get_expires(timer),
1089                              ns_to_ktime(bcn_int * 1000));
1090         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1091 out:
1092         return HRTIMER_NORESTART;
1093 }
1094
1095 static const char * const hwsim_chanwidths[] = {
1096         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1097         [NL80211_CHAN_WIDTH_20] = "ht20",
1098         [NL80211_CHAN_WIDTH_40] = "ht40",
1099         [NL80211_CHAN_WIDTH_80] = "vht80",
1100         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1101         [NL80211_CHAN_WIDTH_160] = "vht160",
1102 };
1103
1104 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1105 {
1106         struct mac80211_hwsim_data *data = hw->priv;
1107         struct ieee80211_conf *conf = &hw->conf;
1108         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1109                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1110                 [IEEE80211_SMPS_OFF] = "off",
1111                 [IEEE80211_SMPS_STATIC] = "static",
1112                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1113         };
1114
1115         if (conf->chandef.chan)
1116                 wiphy_debug(hw->wiphy,
1117                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1118                             __func__,
1119                             conf->chandef.chan->center_freq,
1120                             conf->chandef.center_freq1,
1121                             conf->chandef.center_freq2,
1122                             hwsim_chanwidths[conf->chandef.width],
1123                             !!(conf->flags & IEEE80211_CONF_IDLE),
1124                             !!(conf->flags & IEEE80211_CONF_PS),
1125                             smps_modes[conf->smps_mode]);
1126         else
1127                 wiphy_debug(hw->wiphy,
1128                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1129                             __func__,
1130                             !!(conf->flags & IEEE80211_CONF_IDLE),
1131                             !!(conf->flags & IEEE80211_CONF_PS),
1132                             smps_modes[conf->smps_mode]);
1133
1134         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1135
1136         data->channel = conf->chandef.chan;
1137
1138         WARN_ON(data->channel && channels > 1);
1139
1140         data->power_level = conf->power_level;
1141         if (!data->started || !data->beacon_int)
1142                 tasklet_hrtimer_cancel(&data->beacon_timer);
1143         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1144                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1145                 u32 bcn_int = data->beacon_int;
1146                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1147
1148                 tasklet_hrtimer_start(&data->beacon_timer,
1149                                       ns_to_ktime(until_tbtt * 1000),
1150                                       HRTIMER_MODE_REL);
1151         }
1152
1153         return 0;
1154 }
1155
1156
1157 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1158                                             unsigned int changed_flags,
1159                                             unsigned int *total_flags,u64 multicast)
1160 {
1161         struct mac80211_hwsim_data *data = hw->priv;
1162
1163         wiphy_debug(hw->wiphy, "%s\n", __func__);
1164
1165         data->rx_filter = 0;
1166         if (*total_flags & FIF_PROMISC_IN_BSS)
1167                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1168         if (*total_flags & FIF_ALLMULTI)
1169                 data->rx_filter |= FIF_ALLMULTI;
1170
1171         *total_flags = data->rx_filter;
1172 }
1173
1174 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1175                                        struct ieee80211_vif *vif)
1176 {
1177         unsigned int *count = data;
1178         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1179
1180         if (vp->bcn_en)
1181                 (*count)++;
1182 }
1183
1184 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1185                                             struct ieee80211_vif *vif,
1186                                             struct ieee80211_bss_conf *info,
1187                                             u32 changed)
1188 {
1189         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1190         struct mac80211_hwsim_data *data = hw->priv;
1191
1192         hwsim_check_magic(vif);
1193
1194         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1195                     __func__, changed, vif->addr);
1196
1197         if (changed & BSS_CHANGED_BSSID) {
1198                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1199                             __func__, info->bssid);
1200                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1201         }
1202
1203         if (changed & BSS_CHANGED_ASSOC) {
1204                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1205                             info->assoc, info->aid);
1206                 vp->assoc = info->assoc;
1207                 vp->aid = info->aid;
1208         }
1209
1210         if (changed & BSS_CHANGED_BEACON_INT) {
1211                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1212                 data->beacon_int = info->beacon_int * 1024;
1213         }
1214
1215         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1216                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1217                 vp->bcn_en = info->enable_beacon;
1218                 if (data->started &&
1219                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1220                     info->enable_beacon) {
1221                         u64 tsf, until_tbtt;
1222                         u32 bcn_int;
1223                         if (WARN_ON(!data->beacon_int))
1224                                 data->beacon_int = 1000 * 1024;
1225                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1226                         bcn_int = data->beacon_int;
1227                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1228                         tasklet_hrtimer_start(&data->beacon_timer,
1229                                               ns_to_ktime(until_tbtt * 1000),
1230                                               HRTIMER_MODE_REL);
1231                 } else if (!info->enable_beacon) {
1232                         unsigned int count = 0;
1233                         ieee80211_iterate_active_interfaces(
1234                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1235                                 mac80211_hwsim_bcn_en_iter, &count);
1236                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1237                                     count);
1238                         if (count == 0)
1239                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1240                 }
1241         }
1242
1243         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1244                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1245                             info->use_cts_prot);
1246         }
1247
1248         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1249                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1250                             info->use_short_preamble);
1251         }
1252
1253         if (changed & BSS_CHANGED_ERP_SLOT) {
1254                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1255         }
1256
1257         if (changed & BSS_CHANGED_HT) {
1258                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1259                             info->ht_operation_mode);
1260         }
1261
1262         if (changed & BSS_CHANGED_BASIC_RATES) {
1263                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1264                             (unsigned long long) info->basic_rates);
1265         }
1266
1267         if (changed & BSS_CHANGED_TXPOWER)
1268                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1269 }
1270
1271 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1272                                   struct ieee80211_vif *vif,
1273                                   struct ieee80211_sta *sta)
1274 {
1275         hwsim_check_magic(vif);
1276         hwsim_set_sta_magic(sta);
1277
1278         return 0;
1279 }
1280
1281 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1282                                      struct ieee80211_vif *vif,
1283                                      struct ieee80211_sta *sta)
1284 {
1285         hwsim_check_magic(vif);
1286         hwsim_clear_sta_magic(sta);
1287
1288         return 0;
1289 }
1290
1291 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1292                                       struct ieee80211_vif *vif,
1293                                       enum sta_notify_cmd cmd,
1294                                       struct ieee80211_sta *sta)
1295 {
1296         hwsim_check_magic(vif);
1297
1298         switch (cmd) {
1299         case STA_NOTIFY_SLEEP:
1300         case STA_NOTIFY_AWAKE:
1301                 /* TODO: make good use of these flags */
1302                 break;
1303         default:
1304                 WARN(1, "Invalid sta notify: %d\n", cmd);
1305                 break;
1306         }
1307 }
1308
1309 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1310                                   struct ieee80211_sta *sta,
1311                                   bool set)
1312 {
1313         hwsim_check_sta_magic(sta);
1314         return 0;
1315 }
1316
1317 static int mac80211_hwsim_conf_tx(
1318         struct ieee80211_hw *hw,
1319         struct ieee80211_vif *vif, u16 queue,
1320         const struct ieee80211_tx_queue_params *params)
1321 {
1322         wiphy_debug(hw->wiphy,
1323                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1324                     __func__, queue,
1325                     params->txop, params->cw_min,
1326                     params->cw_max, params->aifs);
1327         return 0;
1328 }
1329
1330 static int mac80211_hwsim_get_survey(
1331         struct ieee80211_hw *hw, int idx,
1332         struct survey_info *survey)
1333 {
1334         struct ieee80211_conf *conf = &hw->conf;
1335
1336         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1337
1338         if (idx != 0)
1339                 return -ENOENT;
1340
1341         /* Current channel */
1342         survey->channel = conf->chandef.chan;
1343
1344         /*
1345          * Magically conjured noise level --- this is only ok for simulated hardware.
1346          *
1347          * A real driver which cannot determine the real channel noise MUST NOT
1348          * report any noise, especially not a magically conjured one :-)
1349          */
1350         survey->filled = SURVEY_INFO_NOISE_DBM;
1351         survey->noise = -92;
1352
1353         return 0;
1354 }
1355
1356 #ifdef CONFIG_NL80211_TESTMODE
1357 /*
1358  * This section contains example code for using netlink
1359  * attributes with the testmode command in nl80211.
1360  */
1361
1362 /* These enums need to be kept in sync with userspace */
1363 enum hwsim_testmode_attr {
1364         __HWSIM_TM_ATTR_INVALID = 0,
1365         HWSIM_TM_ATTR_CMD       = 1,
1366         HWSIM_TM_ATTR_PS        = 2,
1367
1368         /* keep last */
1369         __HWSIM_TM_ATTR_AFTER_LAST,
1370         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1371 };
1372
1373 enum hwsim_testmode_cmd {
1374         HWSIM_TM_CMD_SET_PS             = 0,
1375         HWSIM_TM_CMD_GET_PS             = 1,
1376         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1377         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1378 };
1379
1380 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1381         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1382         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1383 };
1384
1385 static int hwsim_fops_ps_write(void *dat, u64 val);
1386
1387 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1388                                        struct ieee80211_vif *vif,
1389                                        void *data, int len)
1390 {
1391         struct mac80211_hwsim_data *hwsim = hw->priv;
1392         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1393         struct sk_buff *skb;
1394         int err, ps;
1395
1396         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1397                         hwsim_testmode_policy);
1398         if (err)
1399                 return err;
1400
1401         if (!tb[HWSIM_TM_ATTR_CMD])
1402                 return -EINVAL;
1403
1404         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1405         case HWSIM_TM_CMD_SET_PS:
1406                 if (!tb[HWSIM_TM_ATTR_PS])
1407                         return -EINVAL;
1408                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1409                 return hwsim_fops_ps_write(hwsim, ps);
1410         case HWSIM_TM_CMD_GET_PS:
1411                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1412                                                 nla_total_size(sizeof(u32)));
1413                 if (!skb)
1414                         return -ENOMEM;
1415                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1416                         goto nla_put_failure;
1417                 return cfg80211_testmode_reply(skb);
1418         case HWSIM_TM_CMD_STOP_QUEUES:
1419                 ieee80211_stop_queues(hw);
1420                 return 0;
1421         case HWSIM_TM_CMD_WAKE_QUEUES:
1422                 ieee80211_wake_queues(hw);
1423                 return 0;
1424         default:
1425                 return -EOPNOTSUPP;
1426         }
1427
1428  nla_put_failure:
1429         kfree_skb(skb);
1430         return -ENOBUFS;
1431 }
1432 #endif
1433
1434 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1435                                        struct ieee80211_vif *vif,
1436                                        enum ieee80211_ampdu_mlme_action action,
1437                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1438                                        u8 buf_size)
1439 {
1440         switch (action) {
1441         case IEEE80211_AMPDU_TX_START:
1442                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1443                 break;
1444         case IEEE80211_AMPDU_TX_STOP_CONT:
1445         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1446         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1447                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1448                 break;
1449         case IEEE80211_AMPDU_TX_OPERATIONAL:
1450                 break;
1451         case IEEE80211_AMPDU_RX_START:
1452         case IEEE80211_AMPDU_RX_STOP:
1453                 break;
1454         default:
1455                 return -EOPNOTSUPP;
1456         }
1457
1458         return 0;
1459 }
1460
1461 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1462 {
1463         /* Not implemented, queues only on kernel side */
1464 }
1465
1466 static void hw_scan_work(struct work_struct *work)
1467 {
1468         struct mac80211_hwsim_data *hwsim =
1469                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1470         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1471         int dwell, i;
1472
1473         mutex_lock(&hwsim->mutex);
1474         if (hwsim->scan_chan_idx >= req->n_channels) {
1475                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1476                 ieee80211_scan_completed(hwsim->hw, false);
1477                 hwsim->hw_scan_request = NULL;
1478                 hwsim->hw_scan_vif = NULL;
1479                 hwsim->tmp_chan = NULL;
1480                 mutex_unlock(&hwsim->mutex);
1481                 return;
1482         }
1483
1484         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1485                     req->channels[hwsim->scan_chan_idx]->center_freq);
1486
1487         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1488         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_PASSIVE_SCAN ||
1489             !req->n_ssids) {
1490                 dwell = 120;
1491         } else {
1492                 dwell = 30;
1493                 /* send probes */
1494                 for (i = 0; i < req->n_ssids; i++) {
1495                         struct sk_buff *probe;
1496
1497                         probe = ieee80211_probereq_get(hwsim->hw,
1498                                                        hwsim->hw_scan_vif,
1499                                                        req->ssids[i].ssid,
1500                                                        req->ssids[i].ssid_len,
1501                                                        req->ie_len);
1502                         if (!probe)
1503                                 continue;
1504
1505                         if (req->ie_len)
1506                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1507                                        req->ie_len);
1508
1509                         local_bh_disable();
1510                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1511                                                 hwsim->tmp_chan);
1512                         local_bh_enable();
1513                 }
1514         }
1515         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1516                                      msecs_to_jiffies(dwell));
1517         hwsim->scan_chan_idx++;
1518         mutex_unlock(&hwsim->mutex);
1519 }
1520
1521 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1522                                   struct ieee80211_vif *vif,
1523                                   struct cfg80211_scan_request *req)
1524 {
1525         struct mac80211_hwsim_data *hwsim = hw->priv;
1526
1527         mutex_lock(&hwsim->mutex);
1528         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1529                 mutex_unlock(&hwsim->mutex);
1530                 return -EBUSY;
1531         }
1532         hwsim->hw_scan_request = req;
1533         hwsim->hw_scan_vif = vif;
1534         hwsim->scan_chan_idx = 0;
1535         mutex_unlock(&hwsim->mutex);
1536
1537         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1538
1539         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1540
1541         return 0;
1542 }
1543
1544 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1545                                           struct ieee80211_vif *vif)
1546 {
1547         struct mac80211_hwsim_data *hwsim = hw->priv;
1548
1549         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1550
1551         cancel_delayed_work_sync(&hwsim->hw_scan);
1552
1553         mutex_lock(&hwsim->mutex);
1554         ieee80211_scan_completed(hwsim->hw, true);
1555         hwsim->tmp_chan = NULL;
1556         hwsim->hw_scan_request = NULL;
1557         hwsim->hw_scan_vif = NULL;
1558         mutex_unlock(&hwsim->mutex);
1559 }
1560
1561 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1562 {
1563         struct mac80211_hwsim_data *hwsim = hw->priv;
1564
1565         mutex_lock(&hwsim->mutex);
1566
1567         if (hwsim->scanning) {
1568                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1569                 goto out;
1570         }
1571
1572         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1573         hwsim->scanning = true;
1574
1575 out:
1576         mutex_unlock(&hwsim->mutex);
1577 }
1578
1579 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1580 {
1581         struct mac80211_hwsim_data *hwsim = hw->priv;
1582
1583         mutex_lock(&hwsim->mutex);
1584
1585         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1586         hwsim->scanning = false;
1587
1588         mutex_unlock(&hwsim->mutex);
1589 }
1590
1591 static void hw_roc_done(struct work_struct *work)
1592 {
1593         struct mac80211_hwsim_data *hwsim =
1594                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1595
1596         mutex_lock(&hwsim->mutex);
1597         ieee80211_remain_on_channel_expired(hwsim->hw);
1598         hwsim->tmp_chan = NULL;
1599         mutex_unlock(&hwsim->mutex);
1600
1601         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1602 }
1603
1604 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1605                               struct ieee80211_vif *vif,
1606                               struct ieee80211_channel *chan,
1607                               int duration,
1608                               enum ieee80211_roc_type type)
1609 {
1610         struct mac80211_hwsim_data *hwsim = hw->priv;
1611
1612         mutex_lock(&hwsim->mutex);
1613         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1614                 mutex_unlock(&hwsim->mutex);
1615                 return -EBUSY;
1616         }
1617
1618         hwsim->tmp_chan = chan;
1619         mutex_unlock(&hwsim->mutex);
1620
1621         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1622                     chan->center_freq, duration);
1623
1624         ieee80211_ready_on_channel(hw);
1625
1626         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1627                                      msecs_to_jiffies(duration));
1628         return 0;
1629 }
1630
1631 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1632 {
1633         struct mac80211_hwsim_data *hwsim = hw->priv;
1634
1635         cancel_delayed_work_sync(&hwsim->roc_done);
1636
1637         mutex_lock(&hwsim->mutex);
1638         hwsim->tmp_chan = NULL;
1639         mutex_unlock(&hwsim->mutex);
1640
1641         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1642
1643         return 0;
1644 }
1645
1646 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1647                                       struct ieee80211_chanctx_conf *ctx)
1648 {
1649         hwsim_set_chanctx_magic(ctx);
1650         wiphy_debug(hw->wiphy,
1651                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1652                     ctx->def.chan->center_freq, ctx->def.width,
1653                     ctx->def.center_freq1, ctx->def.center_freq2);
1654         return 0;
1655 }
1656
1657 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1658                                           struct ieee80211_chanctx_conf *ctx)
1659 {
1660         wiphy_debug(hw->wiphy,
1661                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1662                     ctx->def.chan->center_freq, ctx->def.width,
1663                     ctx->def.center_freq1, ctx->def.center_freq2);
1664         hwsim_check_chanctx_magic(ctx);
1665         hwsim_clear_chanctx_magic(ctx);
1666 }
1667
1668 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1669                                           struct ieee80211_chanctx_conf *ctx,
1670                                           u32 changed)
1671 {
1672         hwsim_check_chanctx_magic(ctx);
1673         wiphy_debug(hw->wiphy,
1674                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1675                     ctx->def.chan->center_freq, ctx->def.width,
1676                     ctx->def.center_freq1, ctx->def.center_freq2);
1677 }
1678
1679 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1680                                              struct ieee80211_vif *vif,
1681                                              struct ieee80211_chanctx_conf *ctx)
1682 {
1683         hwsim_check_magic(vif);
1684         hwsim_check_chanctx_magic(ctx);
1685
1686         return 0;
1687 }
1688
1689 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1690                                                 struct ieee80211_vif *vif,
1691                                                 struct ieee80211_chanctx_conf *ctx)
1692 {
1693         hwsim_check_magic(vif);
1694         hwsim_check_chanctx_magic(ctx);
1695 }
1696
1697 static struct ieee80211_ops mac80211_hwsim_ops =
1698 {
1699         .tx = mac80211_hwsim_tx,
1700         .start = mac80211_hwsim_start,
1701         .stop = mac80211_hwsim_stop,
1702         .add_interface = mac80211_hwsim_add_interface,
1703         .change_interface = mac80211_hwsim_change_interface,
1704         .remove_interface = mac80211_hwsim_remove_interface,
1705         .config = mac80211_hwsim_config,
1706         .configure_filter = mac80211_hwsim_configure_filter,
1707         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1708         .sta_add = mac80211_hwsim_sta_add,
1709         .sta_remove = mac80211_hwsim_sta_remove,
1710         .sta_notify = mac80211_hwsim_sta_notify,
1711         .set_tim = mac80211_hwsim_set_tim,
1712         .conf_tx = mac80211_hwsim_conf_tx,
1713         .get_survey = mac80211_hwsim_get_survey,
1714         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1715         .ampdu_action = mac80211_hwsim_ampdu_action,
1716         .sw_scan_start = mac80211_hwsim_sw_scan,
1717         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1718         .flush = mac80211_hwsim_flush,
1719         .get_tsf = mac80211_hwsim_get_tsf,
1720         .set_tsf = mac80211_hwsim_set_tsf,
1721 };
1722
1723
1724 static void mac80211_hwsim_free(void)
1725 {
1726         struct list_head tmplist, *i, *tmp;
1727         struct mac80211_hwsim_data *data, *tmpdata;
1728
1729         INIT_LIST_HEAD(&tmplist);
1730
1731         spin_lock_bh(&hwsim_radio_lock);
1732         list_for_each_safe(i, tmp, &hwsim_radios)
1733                 list_move(i, &tmplist);
1734         spin_unlock_bh(&hwsim_radio_lock);
1735
1736         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1737                 debugfs_remove(data->debugfs_group);
1738                 debugfs_remove(data->debugfs_ps);
1739                 debugfs_remove(data->debugfs);
1740                 ieee80211_unregister_hw(data->hw);
1741                 device_release_driver(data->dev);
1742                 device_unregister(data->dev);
1743                 ieee80211_free_hw(data->hw);
1744         }
1745         class_destroy(hwsim_class);
1746 }
1747
1748 static struct platform_driver mac80211_hwsim_driver = {
1749         .driver = {
1750                 .name = "mac80211_hwsim",
1751                 .owner = THIS_MODULE,
1752         },
1753 };
1754
1755 static const struct net_device_ops hwsim_netdev_ops = {
1756         .ndo_start_xmit         = hwsim_mon_xmit,
1757         .ndo_change_mtu         = eth_change_mtu,
1758         .ndo_set_mac_address    = eth_mac_addr,
1759         .ndo_validate_addr      = eth_validate_addr,
1760 };
1761
1762 static void hwsim_mon_setup(struct net_device *dev)
1763 {
1764         dev->netdev_ops = &hwsim_netdev_ops;
1765         dev->destructor = free_netdev;
1766         ether_setup(dev);
1767         dev->tx_queue_len = 0;
1768         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1769         memset(dev->dev_addr, 0, ETH_ALEN);
1770         dev->dev_addr[0] = 0x12;
1771 }
1772
1773
1774 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1775 {
1776         struct mac80211_hwsim_data *data = dat;
1777         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1778         struct sk_buff *skb;
1779         struct ieee80211_pspoll *pspoll;
1780
1781         if (!vp->assoc)
1782                 return;
1783
1784         wiphy_debug(data->hw->wiphy,
1785                     "%s: send PS-Poll to %pM for aid %d\n",
1786                     __func__, vp->bssid, vp->aid);
1787
1788         skb = dev_alloc_skb(sizeof(*pspoll));
1789         if (!skb)
1790                 return;
1791         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1792         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1793                                             IEEE80211_STYPE_PSPOLL |
1794                                             IEEE80211_FCTL_PM);
1795         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1796         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1797         memcpy(pspoll->ta, mac, ETH_ALEN);
1798
1799         rcu_read_lock();
1800         mac80211_hwsim_tx_frame(data->hw, skb,
1801                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1802         rcu_read_unlock();
1803 }
1804
1805 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1806                                 struct ieee80211_vif *vif, int ps)
1807 {
1808         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1809         struct sk_buff *skb;
1810         struct ieee80211_hdr *hdr;
1811
1812         if (!vp->assoc)
1813                 return;
1814
1815         wiphy_debug(data->hw->wiphy,
1816                     "%s: send data::nullfunc to %pM ps=%d\n",
1817                     __func__, vp->bssid, ps);
1818
1819         skb = dev_alloc_skb(sizeof(*hdr));
1820         if (!skb)
1821                 return;
1822         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1823         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1824                                          IEEE80211_STYPE_NULLFUNC |
1825                                          (ps ? IEEE80211_FCTL_PM : 0));
1826         hdr->duration_id = cpu_to_le16(0);
1827         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1828         memcpy(hdr->addr2, mac, ETH_ALEN);
1829         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1830
1831         rcu_read_lock();
1832         mac80211_hwsim_tx_frame(data->hw, skb,
1833                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1834         rcu_read_unlock();
1835 }
1836
1837
1838 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1839                                    struct ieee80211_vif *vif)
1840 {
1841         struct mac80211_hwsim_data *data = dat;
1842         hwsim_send_nullfunc(data, mac, vif, 1);
1843 }
1844
1845
1846 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1847                                       struct ieee80211_vif *vif)
1848 {
1849         struct mac80211_hwsim_data *data = dat;
1850         hwsim_send_nullfunc(data, mac, vif, 0);
1851 }
1852
1853
1854 static int hwsim_fops_ps_read(void *dat, u64 *val)
1855 {
1856         struct mac80211_hwsim_data *data = dat;
1857         *val = data->ps;
1858         return 0;
1859 }
1860
1861 static int hwsim_fops_ps_write(void *dat, u64 val)
1862 {
1863         struct mac80211_hwsim_data *data = dat;
1864         enum ps_mode old_ps;
1865
1866         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1867             val != PS_MANUAL_POLL)
1868                 return -EINVAL;
1869
1870         old_ps = data->ps;
1871         data->ps = val;
1872
1873         if (val == PS_MANUAL_POLL) {
1874                 ieee80211_iterate_active_interfaces(data->hw,
1875                                                     IEEE80211_IFACE_ITER_NORMAL,
1876                                                     hwsim_send_ps_poll, data);
1877                 data->ps_poll_pending = true;
1878         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1879                 ieee80211_iterate_active_interfaces(data->hw,
1880                                                     IEEE80211_IFACE_ITER_NORMAL,
1881                                                     hwsim_send_nullfunc_ps,
1882                                                     data);
1883         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1884                 ieee80211_iterate_active_interfaces(data->hw,
1885                                                     IEEE80211_IFACE_ITER_NORMAL,
1886                                                     hwsim_send_nullfunc_no_ps,
1887                                                     data);
1888         }
1889
1890         return 0;
1891 }
1892
1893 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1894                         "%llu\n");
1895
1896
1897 static int hwsim_fops_group_read(void *dat, u64 *val)
1898 {
1899         struct mac80211_hwsim_data *data = dat;
1900         *val = data->group;
1901         return 0;
1902 }
1903
1904 static int hwsim_fops_group_write(void *dat, u64 val)
1905 {
1906         struct mac80211_hwsim_data *data = dat;
1907         data->group = val;
1908         return 0;
1909 }
1910
1911 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1912                         hwsim_fops_group_read, hwsim_fops_group_write,
1913                         "%llx\n");
1914
1915 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1916                              struct mac_address *addr)
1917 {
1918         struct mac80211_hwsim_data *data;
1919         bool _found = false;
1920
1921         spin_lock_bh(&hwsim_radio_lock);
1922         list_for_each_entry(data, &hwsim_radios, list) {
1923                 if (memcmp(data->addresses[1].addr, addr,
1924                           sizeof(struct mac_address)) == 0) {
1925                         _found = true;
1926                         break;
1927                 }
1928         }
1929         spin_unlock_bh(&hwsim_radio_lock);
1930
1931         if (!_found)
1932                 return NULL;
1933
1934         return data;
1935 }
1936
1937 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1938                                            struct genl_info *info)
1939 {
1940
1941         struct ieee80211_hdr *hdr;
1942         struct mac80211_hwsim_data *data2;
1943         struct ieee80211_tx_info *txi;
1944         struct hwsim_tx_rate *tx_attempts;
1945         unsigned long ret_skb_ptr;
1946         struct sk_buff *skb, *tmp;
1947         struct mac_address *src;
1948         unsigned int hwsim_flags;
1949
1950         int i;
1951         bool found = false;
1952
1953         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1954            !info->attrs[HWSIM_ATTR_FLAGS] ||
1955            !info->attrs[HWSIM_ATTR_COOKIE] ||
1956            !info->attrs[HWSIM_ATTR_TX_INFO])
1957                 goto out;
1958
1959         src = (struct mac_address *)nla_data(
1960                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1961         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1962
1963         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1964
1965         data2 = get_hwsim_data_ref_from_addr(src);
1966
1967         if (data2 == NULL)
1968                 goto out;
1969
1970         /* look for the skb matching the cookie passed back from user */
1971         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1972                 if ((unsigned long)skb == ret_skb_ptr) {
1973                         skb_unlink(skb, &data2->pending);
1974                         found = true;
1975                         break;
1976                 }
1977         }
1978
1979         /* not found */
1980         if (!found)
1981                 goto out;
1982
1983         /* Tx info received because the frame was broadcasted on user space,
1984          so we get all the necessary info: tx attempts and skb control buff */
1985
1986         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1987                        info->attrs[HWSIM_ATTR_TX_INFO]);
1988
1989         /* now send back TX status */
1990         txi = IEEE80211_SKB_CB(skb);
1991
1992         ieee80211_tx_info_clear_status(txi);
1993
1994         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1995                 txi->status.rates[i].idx = tx_attempts[i].idx;
1996                 txi->status.rates[i].count = tx_attempts[i].count;
1997                 /*txi->status.rates[i].flags = 0;*/
1998         }
1999
2000         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2001
2002         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2003            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2004                 if (skb->len >= 16) {
2005                         hdr = (struct ieee80211_hdr *) skb->data;
2006                         mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
2007                                                    hdr->addr2);
2008                 }
2009                 txi->flags |= IEEE80211_TX_STAT_ACK;
2010         }
2011         ieee80211_tx_status_irqsafe(data2->hw, skb);
2012         return 0;
2013 out:
2014         return -EINVAL;
2015
2016 }
2017
2018 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2019                                           struct genl_info *info)
2020 {
2021
2022         struct mac80211_hwsim_data *data2;
2023         struct ieee80211_rx_status rx_status;
2024         struct mac_address *dst;
2025         int frame_data_len;
2026         char *frame_data;
2027         struct sk_buff *skb = NULL;
2028
2029         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2030             !info->attrs[HWSIM_ATTR_FRAME] ||
2031             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2032             !info->attrs[HWSIM_ATTR_SIGNAL])
2033                 goto out;
2034
2035         dst = (struct mac_address *)nla_data(
2036                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2037
2038         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2039         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2040
2041         /* Allocate new skb here */
2042         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2043         if (skb == NULL)
2044                 goto err;
2045
2046         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
2047                 /* Copy the data */
2048                 memcpy(skb_put(skb, frame_data_len), frame_data,
2049                        frame_data_len);
2050         } else
2051                 goto err;
2052
2053         data2 = get_hwsim_data_ref_from_addr(dst);
2054
2055         if (data2 == NULL)
2056                 goto out;
2057
2058         /* check if radio is configured properly */
2059
2060         if (data2->idle || !data2->started)
2061                 goto out;
2062
2063         /*A frame is received from user space*/
2064         memset(&rx_status, 0, sizeof(rx_status));
2065         rx_status.freq = data2->channel->center_freq;
2066         rx_status.band = data2->channel->band;
2067         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2068         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2069
2070         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2071         ieee80211_rx_irqsafe(data2->hw, skb);
2072
2073         return 0;
2074 err:
2075         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2076         goto out;
2077 out:
2078         dev_kfree_skb(skb);
2079         return -EINVAL;
2080 }
2081
2082 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2083                                       struct genl_info *info)
2084 {
2085         if (info == NULL)
2086                 goto out;
2087
2088         wmediumd_portid = info->snd_portid;
2089
2090         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2091                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2092
2093         return 0;
2094 out:
2095         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2096         return -EINVAL;
2097 }
2098
2099 /* Generic Netlink operations array */
2100 static const struct genl_ops hwsim_ops[] = {
2101         {
2102                 .cmd = HWSIM_CMD_REGISTER,
2103                 .policy = hwsim_genl_policy,
2104                 .doit = hwsim_register_received_nl,
2105                 .flags = GENL_ADMIN_PERM,
2106         },
2107         {
2108                 .cmd = HWSIM_CMD_FRAME,
2109                 .policy = hwsim_genl_policy,
2110                 .doit = hwsim_cloned_frame_received_nl,
2111         },
2112         {
2113                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2114                 .policy = hwsim_genl_policy,
2115                 .doit = hwsim_tx_info_frame_received_nl,
2116         },
2117 };
2118
2119 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2120                                          unsigned long state,
2121                                          void *_notify)
2122 {
2123         struct netlink_notify *notify = _notify;
2124
2125         if (state != NETLINK_URELEASE)
2126                 return NOTIFY_DONE;
2127
2128         if (notify->portid == wmediumd_portid) {
2129                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2130                        " socket, switching to perfect channel medium\n");
2131                 wmediumd_portid = 0;
2132         }
2133         return NOTIFY_DONE;
2134
2135 }
2136
2137 static struct notifier_block hwsim_netlink_notifier = {
2138         .notifier_call = mac80211_hwsim_netlink_notify,
2139 };
2140
2141 static int hwsim_init_netlink(void)
2142 {
2143         int rc;
2144
2145         /* userspace test API hasn't been adjusted for multi-channel */
2146         if (channels > 1)
2147                 return 0;
2148
2149         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2150
2151         rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2152         if (rc)
2153                 goto failure;
2154
2155         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2156         if (rc)
2157                 goto failure;
2158
2159         return 0;
2160
2161 failure:
2162         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2163         return -EINVAL;
2164 }
2165
2166 static void hwsim_exit_netlink(void)
2167 {
2168         int ret;
2169
2170         /* userspace test API hasn't been adjusted for multi-channel */
2171         if (channels > 1)
2172                 return;
2173
2174         printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
2175         /* unregister the notifier */
2176         netlink_unregister_notifier(&hwsim_netlink_notifier);
2177         /* unregister the family */
2178         ret = genl_unregister_family(&hwsim_genl_family);
2179         if (ret)
2180                 printk(KERN_DEBUG "mac80211_hwsim: "
2181                        "unregister family %i\n", ret);
2182 }
2183
2184 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2185         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2186         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2187                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2188 #ifdef CONFIG_MAC80211_MESH
2189                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2190 #endif
2191                                  BIT(NL80211_IFTYPE_AP) |
2192                                  BIT(NL80211_IFTYPE_P2P_GO) },
2193         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2194 };
2195
2196 static struct ieee80211_iface_combination hwsim_if_comb = {
2197         .limits = hwsim_if_limits,
2198         .n_limits = ARRAY_SIZE(hwsim_if_limits),
2199         .max_interfaces = 2048,
2200         .num_different_channels = 1,
2201 };
2202
2203 static int __init init_mac80211_hwsim(void)
2204 {
2205         int i, err = 0;
2206         u8 addr[ETH_ALEN];
2207         struct mac80211_hwsim_data *data;
2208         struct ieee80211_hw *hw;
2209         enum ieee80211_band band;
2210
2211         if (radios < 1 || radios > 100)
2212                 return -EINVAL;
2213
2214         if (channels < 1)
2215                 return -EINVAL;
2216
2217         if (channels > 1) {
2218                 hwsim_if_comb.num_different_channels = channels;
2219                 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
2220                 mac80211_hwsim_ops.cancel_hw_scan =
2221                         mac80211_hwsim_cancel_hw_scan;
2222                 mac80211_hwsim_ops.sw_scan_start = NULL;
2223                 mac80211_hwsim_ops.sw_scan_complete = NULL;
2224                 mac80211_hwsim_ops.remain_on_channel =
2225                         mac80211_hwsim_roc;
2226                 mac80211_hwsim_ops.cancel_remain_on_channel =
2227                         mac80211_hwsim_croc;
2228                 mac80211_hwsim_ops.add_chanctx =
2229                         mac80211_hwsim_add_chanctx;
2230                 mac80211_hwsim_ops.remove_chanctx =
2231                         mac80211_hwsim_remove_chanctx;
2232                 mac80211_hwsim_ops.change_chanctx =
2233                         mac80211_hwsim_change_chanctx;
2234                 mac80211_hwsim_ops.assign_vif_chanctx =
2235                         mac80211_hwsim_assign_vif_chanctx;
2236                 mac80211_hwsim_ops.unassign_vif_chanctx =
2237                         mac80211_hwsim_unassign_vif_chanctx;
2238         }
2239
2240         spin_lock_init(&hwsim_radio_lock);
2241         INIT_LIST_HEAD(&hwsim_radios);
2242
2243         err = platform_driver_register(&mac80211_hwsim_driver);
2244         if (err)
2245                 return err;
2246
2247         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2248         if (IS_ERR(hwsim_class)) {
2249                 err = PTR_ERR(hwsim_class);
2250                 goto failed_unregister_driver;
2251         }
2252
2253         memset(addr, 0, ETH_ALEN);
2254         addr[0] = 0x02;
2255
2256         for (i = 0; i < radios; i++) {
2257                 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
2258                        i);
2259                 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
2260                 if (!hw) {
2261                         printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
2262                                "failed\n");
2263                         err = -ENOMEM;
2264                         goto failed;
2265                 }
2266                 data = hw->priv;
2267                 data->hw = hw;
2268
2269                 data->dev = device_create(hwsim_class, NULL, 0, hw,
2270                                           "hwsim%d", i);
2271                 if (IS_ERR(data->dev)) {
2272                         printk(KERN_DEBUG
2273                                "mac80211_hwsim: device_create failed (%ld)\n",
2274                                PTR_ERR(data->dev));
2275                         err = -ENOMEM;
2276                         goto failed_drvdata;
2277                 }
2278                 data->dev->driver = &mac80211_hwsim_driver.driver;
2279                 err = device_bind_driver(data->dev);
2280                 if (err != 0) {
2281                         printk(KERN_DEBUG
2282                                "mac80211_hwsim: device_bind_driver failed (%d)\n",
2283                                err);
2284                         goto failed_hw;
2285                 }
2286
2287                 skb_queue_head_init(&data->pending);
2288
2289                 SET_IEEE80211_DEV(hw, data->dev);
2290                 addr[3] = i >> 8;
2291                 addr[4] = i;
2292                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2293                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2294                 data->addresses[1].addr[0] |= 0x40;
2295                 hw->wiphy->n_addresses = 2;
2296                 hw->wiphy->addresses = data->addresses;
2297
2298                 hw->wiphy->iface_combinations = &hwsim_if_comb;
2299                 hw->wiphy->n_iface_combinations = 1;
2300
2301                 if (channels > 1) {
2302                         hw->wiphy->max_scan_ssids = 255;
2303                         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2304                         hw->wiphy->max_remain_on_channel_duration = 1000;
2305                 }
2306
2307                 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2308                 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2309
2310                 hw->channel_change_time = 1;
2311                 hw->queues = 5;
2312                 hw->offchannel_tx_hw_queue = 4;
2313                 hw->wiphy->interface_modes =
2314                         BIT(NL80211_IFTYPE_STATION) |
2315                         BIT(NL80211_IFTYPE_AP) |
2316                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
2317                         BIT(NL80211_IFTYPE_P2P_GO) |
2318                         BIT(NL80211_IFTYPE_ADHOC) |
2319                         BIT(NL80211_IFTYPE_MESH_POINT) |
2320                         BIT(NL80211_IFTYPE_P2P_DEVICE);
2321
2322                 hw->flags = IEEE80211_HW_MFP_CAPABLE |
2323                             IEEE80211_HW_SIGNAL_DBM |
2324                             IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2325                             IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2326                             IEEE80211_HW_AMPDU_AGGREGATION |
2327                             IEEE80211_HW_WANT_MONITOR_VIF |
2328                             IEEE80211_HW_QUEUE_CONTROL;
2329                 if (rctbl)
2330                         hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2331
2332                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2333                                     WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2334                                     WIPHY_FLAG_AP_UAPSD;
2335                 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
2336
2337                 /* ask mac80211 to reserve space for magic */
2338                 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2339                 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2340                 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2341
2342                 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2343                         sizeof(hwsim_channels_2ghz));
2344                 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2345                         sizeof(hwsim_channels_5ghz));
2346                 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2347
2348                 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2349                         struct ieee80211_supported_band *sband = &data->bands[band];
2350                         switch (band) {
2351                         case IEEE80211_BAND_2GHZ:
2352                                 sband->channels = data->channels_2ghz;
2353                                 sband->n_channels =
2354                                         ARRAY_SIZE(hwsim_channels_2ghz);
2355                                 sband->bitrates = data->rates;
2356                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2357                                 break;
2358                         case IEEE80211_BAND_5GHZ:
2359                                 sband->channels = data->channels_5ghz;
2360                                 sband->n_channels =
2361                                         ARRAY_SIZE(hwsim_channels_5ghz);
2362                                 sband->bitrates = data->rates + 4;
2363                                 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2364                                 break;
2365                         default:
2366                                 continue;
2367                         }
2368
2369                         sband->ht_cap.ht_supported = true;
2370                         sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2371                                 IEEE80211_HT_CAP_GRN_FLD |
2372                                 IEEE80211_HT_CAP_SGI_40 |
2373                                 IEEE80211_HT_CAP_DSSSCCK40;
2374                         sband->ht_cap.ampdu_factor = 0x3;
2375                         sband->ht_cap.ampdu_density = 0x6;
2376                         memset(&sband->ht_cap.mcs, 0,
2377                                sizeof(sband->ht_cap.mcs));
2378                         sband->ht_cap.mcs.rx_mask[0] = 0xff;
2379                         sband->ht_cap.mcs.rx_mask[1] = 0xff;
2380                         sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2381
2382                         hw->wiphy->bands[band] = sband;
2383
2384                         sband->vht_cap.vht_supported = true;
2385                         sband->vht_cap.cap =
2386                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2387                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2388                                 IEEE80211_VHT_CAP_RXLDPC |
2389                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2390                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2391                                 IEEE80211_VHT_CAP_TXSTBC |
2392                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2393                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2394                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2395                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2396                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2397                         sband->vht_cap.vht_mcs.rx_mcs_map =
2398                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2399                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2400                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2401                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2402                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2403                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2404                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2405                                             IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2406                         sband->vht_cap.vht_mcs.tx_mcs_map =
2407                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2408                 }
2409                 /* By default all radios are belonging to the first group */
2410                 data->group = 1;
2411                 mutex_init(&data->mutex);
2412
2413                 /* Enable frame retransmissions for lossy channels */
2414                 hw->max_rates = 4;
2415                 hw->max_rate_tries = 11;
2416
2417                 /* Work to be done prior to ieee80211_register_hw() */
2418                 switch (regtest) {
2419                 case HWSIM_REGTEST_DISABLED:
2420                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2421                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2422                 case HWSIM_REGTEST_DIFF_COUNTRY:
2423                         /*
2424                          * Nothing to be done for driver regulatory domain
2425                          * hints prior to ieee80211_register_hw()
2426                          */
2427                         break;
2428                 case HWSIM_REGTEST_WORLD_ROAM:
2429                         if (i == 0) {
2430                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2431                                 wiphy_apply_custom_regulatory(hw->wiphy,
2432                                         &hwsim_world_regdom_custom_01);
2433                         }
2434                         break;
2435                 case HWSIM_REGTEST_CUSTOM_WORLD:
2436                         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2437                         wiphy_apply_custom_regulatory(hw->wiphy,
2438                                 &hwsim_world_regdom_custom_01);
2439                         break;
2440                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2441                         if (i == 0) {
2442                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2443                                 wiphy_apply_custom_regulatory(hw->wiphy,
2444                                         &hwsim_world_regdom_custom_01);
2445                         } else if (i == 1) {
2446                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2447                                 wiphy_apply_custom_regulatory(hw->wiphy,
2448                                         &hwsim_world_regdom_custom_02);
2449                         }
2450                         break;
2451                 case HWSIM_REGTEST_STRICT_ALL:
2452                         hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2453                         break;
2454                 case HWSIM_REGTEST_STRICT_FOLLOW:
2455                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2456                         if (i == 0)
2457                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2458                         break;
2459                 case HWSIM_REGTEST_ALL:
2460                         if (i == 0) {
2461                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2462                                 wiphy_apply_custom_regulatory(hw->wiphy,
2463                                         &hwsim_world_regdom_custom_01);
2464                         } else if (i == 1) {
2465                                 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
2466                                 wiphy_apply_custom_regulatory(hw->wiphy,
2467                                         &hwsim_world_regdom_custom_02);
2468                         } else if (i == 4)
2469                                 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
2470                         break;
2471                 default:
2472                         break;
2473                 }
2474
2475                 /* give the regulatory workqueue a chance to run */
2476                 if (regtest)
2477                         schedule_timeout_interruptible(1);
2478                 err = ieee80211_register_hw(hw);
2479                 if (err < 0) {
2480                         printk(KERN_DEBUG "mac80211_hwsim: "
2481                                "ieee80211_register_hw failed (%d)\n", err);
2482                         goto failed_hw;
2483                 }
2484
2485                 /* Work to be done after to ieee80211_register_hw() */
2486                 switch (regtest) {
2487                 case HWSIM_REGTEST_WORLD_ROAM:
2488                 case HWSIM_REGTEST_DISABLED:
2489                         break;
2490                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
2491                         if (!i)
2492                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2493                         break;
2494                 case HWSIM_REGTEST_DRIVER_REG_ALL:
2495                 case HWSIM_REGTEST_STRICT_ALL:
2496                         regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2497                         break;
2498                 case HWSIM_REGTEST_DIFF_COUNTRY:
2499                         if (i < ARRAY_SIZE(hwsim_alpha2s))
2500                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
2501                         break;
2502                 case HWSIM_REGTEST_CUSTOM_WORLD:
2503                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
2504                         /*
2505                          * Nothing to be done for custom world regulatory
2506                          * domains after to ieee80211_register_hw
2507                          */
2508                         break;
2509                 case HWSIM_REGTEST_STRICT_FOLLOW:
2510                         if (i == 0)
2511                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2512                         break;
2513                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
2514                         if (i == 0)
2515                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2516                         else if (i == 1)
2517                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2518                         break;
2519                 case HWSIM_REGTEST_ALL:
2520                         if (i == 2)
2521                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
2522                         else if (i == 3)
2523                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
2524                         else if (i == 4)
2525                                 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
2526                         break;
2527                 default:
2528                         break;
2529                 }
2530
2531                 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
2532                             hw->wiphy->perm_addr);
2533
2534                 data->debugfs = debugfs_create_dir("hwsim",
2535                                                    hw->wiphy->debugfsdir);
2536                 data->debugfs_ps = debugfs_create_file("ps", 0666,
2537                                                        data->debugfs, data,
2538                                                        &hwsim_fops_ps);
2539                 data->debugfs_group = debugfs_create_file("group", 0666,
2540                                                         data->debugfs, data,
2541                                                         &hwsim_fops_group);
2542
2543                 tasklet_hrtimer_init(&data->beacon_timer,
2544                                      mac80211_hwsim_beacon,
2545                                      CLOCK_REALTIME, HRTIMER_MODE_ABS);
2546
2547                 list_add_tail(&data->list, &hwsim_radios);
2548         }
2549
2550         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2551         if (hwsim_mon == NULL) {
2552                 err = -ENOMEM;
2553                 goto failed;
2554         }
2555
2556         rtnl_lock();
2557
2558         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2559         if (err < 0)
2560                 goto failed_mon;
2561
2562
2563         err = register_netdevice(hwsim_mon);
2564         if (err < 0)
2565                 goto failed_mon;
2566
2567         rtnl_unlock();
2568
2569         err = hwsim_init_netlink();
2570         if (err < 0)
2571                 goto failed_nl;
2572
2573         return 0;
2574
2575 failed_nl:
2576         printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2577         return err;
2578
2579 failed_mon:
2580         rtnl_unlock();
2581         free_netdev(hwsim_mon);
2582         mac80211_hwsim_free();
2583         return err;
2584
2585 failed_hw:
2586         device_unregister(data->dev);
2587 failed_drvdata:
2588         ieee80211_free_hw(hw);
2589 failed:
2590         mac80211_hwsim_free();
2591 failed_unregister_driver:
2592         platform_driver_unregister(&mac80211_hwsim_driver);
2593         return err;
2594 }
2595 module_init(init_mac80211_hwsim);
2596
2597 static void __exit exit_mac80211_hwsim(void)
2598 {
2599         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2600
2601         hwsim_exit_netlink();
2602
2603         mac80211_hwsim_free();
2604         unregister_netdev(hwsim_mon);
2605         platform_driver_unregister(&mac80211_hwsim_driver);
2606 }
2607 module_exit(exit_mac80211_hwsim);