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