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

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include "mac80211_hwsim.h"
  34
  35 #define WARN_QUEUE 100
  36 #define MAX_QUEUE 200
  37
  38 MODULE_AUTHOR("Jouni Malinen");
  39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  40 MODULE_LICENSE("GPL");
  41
  42 static u32 wmediumd_portid;
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 struct hwsim_vif_priv {
  61         u32 magic;
  62         u8 bssid[ETH_ALEN];
  63         bool assoc;
  64         bool bcn_en;
  65         u16 aid;
  66 };
  67
  68 #define HWSIM_VIF_MAGIC 0x69537748
  69
  70 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
  71 {
  72         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
  73         WARN(vp->magic != HWSIM_VIF_MAGIC,
  74              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
  75              vif, vp->magic, vif->addr, vif->type, vif->p2p);
  76 }
  77
  78 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
  79 {
  80         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
  81         vp->magic = HWSIM_VIF_MAGIC;
  82 }
  83
  84 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
  85 {
  86         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
  87         vp->magic = 0;
  88 }
  89
  90 struct hwsim_sta_priv {
  91         u32 magic;
  92 };
  93
  94 #define HWSIM_STA_MAGIC 0x6d537749
  95
  96 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
  97 {
  98         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
  99         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 100 }
 101
 102 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 103 {
 104         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 105         sp->magic = HWSIM_STA_MAGIC;
 106 }
 107
 108 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 109 {
 110         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 111         sp->magic = 0;
 112 }
 113
 114 struct hwsim_chanctx_priv {
 115         u32 magic;
 116 };
 117
 118 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 119
 120 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 121 {
 122         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 123         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 124 }
 125
 126 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 127 {
 128         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 129         cp->magic = HWSIM_CHANCTX_MAGIC;
 130 }
 131
 132 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 133 {
 134         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 135         cp->magic = 0;
 136 }
 137
 138 static struct class *hwsim_class;
 139
 140 static struct net_device *hwsim_mon; /* global monitor netdev */
 141
 142 #define CHAN2G(_freq)  { \
 143         .band = IEEE80211_BAND_2GHZ, \
 144         .center_freq = (_freq), \
 145         .hw_value = (_freq), \
 146         .max_power = 20, \
 147 }
 148
 149 #define CHAN5G(_freq) { \
 150         .band = IEEE80211_BAND_5GHZ, \
 151         .center_freq = (_freq), \
 152         .hw_value = (_freq), \
 153         .max_power = 20, \
 154 }
 155
 156 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 157         CHAN2G(2412), /* Channel 1 */
 158         CHAN2G(2417), /* Channel 2 */
 159         CHAN2G(2422), /* Channel 3 */
 160         CHAN2G(2427), /* Channel 4 */
 161         CHAN2G(2432), /* Channel 5 */
 162         CHAN2G(2437), /* Channel 6 */
 163         CHAN2G(2442), /* Channel 7 */
 164         CHAN2G(2447), /* Channel 8 */
 165         CHAN2G(2452), /* Channel 9 */
 166         CHAN2G(2457), /* Channel 10 */
 167         CHAN2G(2462), /* Channel 11 */
 168         CHAN2G(2467), /* Channel 12 */
 169         CHAN2G(2472), /* Channel 13 */
 170         CHAN2G(2484), /* Channel 14 */
 171 };
 172
 173 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 174         CHAN5G(5180), /* Channel 36 */
 175         CHAN5G(5200), /* Channel 40 */
 176         CHAN5G(5220), /* Channel 44 */
 177         CHAN5G(5240), /* Channel 48 */
 178
 179         CHAN5G(5260), /* Channel 52 */
 180         CHAN5G(5280), /* Channel 56 */
 181         CHAN5G(5300), /* Channel 60 */
 182         CHAN5G(5320), /* Channel 64 */
 183
 184         CHAN5G(5500), /* Channel 100 */
 185         CHAN5G(5520), /* Channel 104 */
 186         CHAN5G(5540), /* Channel 108 */
 187         CHAN5G(5560), /* Channel 112 */
 188         CHAN5G(5580), /* Channel 116 */
 189         CHAN5G(5600), /* Channel 120 */
 190         CHAN5G(5620), /* Channel 124 */
 191         CHAN5G(5640), /* Channel 128 */
 192         CHAN5G(5660), /* Channel 132 */
 193         CHAN5G(5680), /* Channel 136 */
 194         CHAN5G(5700), /* Channel 140 */
 195
 196         CHAN5G(5745), /* Channel 149 */
 197         CHAN5G(5765), /* Channel 153 */
 198         CHAN5G(5785), /* Channel 157 */
 199         CHAN5G(5805), /* Channel 161 */
 200         CHAN5G(5825), /* Channel 165 */
 201 };
 202
 203 static const struct ieee80211_rate hwsim_rates[] = {
 204         { .bitrate = 10 },
 205         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 206         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 207         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 208         { .bitrate = 60 },
 209         { .bitrate = 90 },
 210         { .bitrate = 120 },
 211         { .bitrate = 180 },
 212         { .bitrate = 240 },
 213         { .bitrate = 360 },
 214         { .bitrate = 480 },
 215         { .bitrate = 540 }
 216 };
 217
 218 static spinlock_t hwsim_radio_lock;
 219 static struct list_head hwsim_radios;
 220
 221 struct mac80211_hwsim_data {
 222         struct list_head list;
 223         struct ieee80211_hw *hw;
 224         struct device *dev;
 225         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 226         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 227         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 228         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 229         struct ieee80211_iface_combination if_combination;
 230
 231         struct mac_address addresses[2];
 232         int channels;
 233
 234         struct ieee80211_channel *tmp_chan;
 235         struct delayed_work roc_done;
 236         struct delayed_work hw_scan;
 237         struct cfg80211_scan_request *hw_scan_request;
 238         struct ieee80211_vif *hw_scan_vif;
 239         int scan_chan_idx;
 240
 241         struct ieee80211_channel *channel;
 242         u64 beacon_int  /* beacon interval in us */;
 243         unsigned int rx_filter;
 244         bool started, idle, scanning;
 245         struct mutex mutex;
 246         struct tasklet_hrtimer beacon_timer;
 247         enum ps_mode {
 248                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 249         } ps;
 250         bool ps_poll_pending;
 251         struct dentry *debugfs;
 252
 253         struct sk_buff_head pending;    /* packets pending */
 254         /*
 255          * Only radios in the same group can communicate together (the
 256          * channel has to match too). Each bit represents a group. A
 257          * radio can be in more then one group.
 258          */
 259         u64 group;
 260
 261         int power_level;
 262
 263         /* difference between this hw's clock and the real clock, in usecs */
 264         s64 tsf_offset;
 265         s64 bcn_delta;
 266         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 267         u64 abs_bcn_ts;
 268 };
 269
 270
 271 struct hwsim_radiotap_hdr {
 272         struct ieee80211_radiotap_header hdr;
 273         __le64 rt_tsft;
 274         u8 rt_flags;
 275         u8 rt_rate;
 276         __le16 rt_channel;
 277         __le16 rt_chbitmask;
 278 } __packed;
 279
 280 struct hwsim_radiotap_ack_hdr {
 281         struct ieee80211_radiotap_header hdr;
 282         u8 rt_flags;
 283         u8 pad;
 284         __le16 rt_channel;
 285         __le16 rt_chbitmask;
 286 } __packed;
 287
 288 /* MAC80211_HWSIM netlinf family */
 289 static struct genl_family hwsim_genl_family = {
 290         .id = GENL_ID_GENERATE,
 291         .hdrsize = 0,
 292         .name = "MAC80211_HWSIM",
 293         .version = 1,
 294         .maxattr = HWSIM_ATTR_MAX,
 295 };
 296
 297 /* MAC80211_HWSIM netlink policy */
 298
 299 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 300         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 301                                        .len = 6*sizeof(u8) },
 302         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 303                                           .len = 6*sizeof(u8) },
 304         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 305                                .len = IEEE80211_MAX_DATA_LEN },
 306         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 307         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 308         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 309         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 310                                  .len = IEEE80211_TX_MAX_RATES*sizeof(
 311                                         struct hwsim_tx_rate)},
 312         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 313 };
 314
 315 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 316                                         struct net_device *dev)
 317 {
 318         /* TODO: allow packet injection */
 319         dev_kfree_skb(skb);
 320         return NETDEV_TX_OK;
 321 }
 322
 323 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 324 {
 325         return ktime_to_us(ktime_get_real());
 326 }
 327
 328 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 329 {
 330         u64 now = mac80211_hwsim_get_tsf_raw();
 331         return cpu_to_le64(now + data->tsf_offset);
 332 }
 333
 334 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 335                                   struct ieee80211_vif *vif)
 336 {
 337         struct mac80211_hwsim_data *data = hw->priv;
 338         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 339 }
 340
 341 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 342                 struct ieee80211_vif *vif, u64 tsf)
 343 {
 344         struct mac80211_hwsim_data *data = hw->priv;
 345         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 346         u32 bcn_int = data->beacon_int;
 347         s64 delta = tsf - now;
 348
 349         data->tsf_offset += delta;
 350         /* adjust after beaconing with new timestamp at old TBTT */
 351         data->bcn_delta = do_div(delta, bcn_int);
 352 }
 353
 354 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 355                                       struct sk_buff *tx_skb,
 356                                       struct ieee80211_channel *chan)
 357 {
 358         struct mac80211_hwsim_data *data = hw->priv;
 359         struct sk_buff *skb;
 360         struct hwsim_radiotap_hdr *hdr;
 361         u16 flags;
 362         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 363         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 364
 365         if (!netif_running(hwsim_mon))
 366                 return;
 367
 368         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 369         if (skb == NULL)
 370                 return;
 371
 372         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 373         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 374         hdr->hdr.it_pad = 0;
 375         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 376         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 377                                           (1 << IEEE80211_RADIOTAP_RATE) |
 378                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 379                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 380         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 381         hdr->rt_flags = 0;
 382         hdr->rt_rate = txrate->bitrate / 5;
 383         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 384         flags = IEEE80211_CHAN_2GHZ;
 385         if (txrate->flags & IEEE80211_RATE_ERP_G)
 386                 flags |= IEEE80211_CHAN_OFDM;
 387         else
 388                 flags |= IEEE80211_CHAN_CCK;
 389         hdr->rt_chbitmask = cpu_to_le16(flags);
 390
 391         skb->dev = hwsim_mon;
 392         skb_set_mac_header(skb, 0);
 393         skb->ip_summed = CHECKSUM_UNNECESSARY;
 394         skb->pkt_type = PACKET_OTHERHOST;
 395         skb->protocol = htons(ETH_P_802_2);
 396         memset(skb->cb, 0, sizeof(skb->cb));
 397         netif_rx(skb);
 398 }
 399
 400
 401 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 402                                        const u8 *addr)
 403 {
 404         struct sk_buff *skb;
 405         struct hwsim_radiotap_ack_hdr *hdr;
 406         u16 flags;
 407         struct ieee80211_hdr *hdr11;
 408
 409         if (!netif_running(hwsim_mon))
 410                 return;
 411
 412         skb = dev_alloc_skb(100);
 413         if (skb == NULL)
 414                 return;
 415
 416         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 417         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 418         hdr->hdr.it_pad = 0;
 419         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 420         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 421                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 422         hdr->rt_flags = 0;
 423         hdr->pad = 0;
 424         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 425         flags = IEEE80211_CHAN_2GHZ;
 426         hdr->rt_chbitmask = cpu_to_le16(flags);
 427
 428         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 429         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 430                                            IEEE80211_STYPE_ACK);
 431         hdr11->duration_id = cpu_to_le16(0);
 432         memcpy(hdr11->addr1, addr, ETH_ALEN);
 433
 434         skb->dev = hwsim_mon;
 435         skb_set_mac_header(skb, 0);
 436         skb->ip_summed = CHECKSUM_UNNECESSARY;
 437         skb->pkt_type = PACKET_OTHERHOST;
 438         skb->protocol = htons(ETH_P_802_2);
 439         memset(skb->cb, 0, sizeof(skb->cb));
 440         netif_rx(skb);
 441 }
 442
 443
 444 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 445                            struct sk_buff *skb)
 446 {
 447         switch (data->ps) {
 448         case PS_DISABLED:
 449                 return true;
 450         case PS_ENABLED:
 451                 return false;
 452         case PS_AUTO_POLL:
 453                 /* TODO: accept (some) Beacons by default and other frames only
 454                  * if pending PS-Poll has been sent */
 455                 return true;
 456         case PS_MANUAL_POLL:
 457                 /* Allow unicast frames to own address if there is a pending
 458                  * PS-Poll */
 459                 if (data->ps_poll_pending &&
 460                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 461                            ETH_ALEN) == 0) {
 462                         data->ps_poll_pending = false;
 463                         return true;
 464                 }
 465                 return false;
 466         }
 467
 468         return true;
 469 }
 470
 471
 472 struct mac80211_hwsim_addr_match_data {
 473         bool ret;
 474         const u8 *addr;
 475 };
 476
 477 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 478                                      struct ieee80211_vif *vif)
 479 {
 480         struct mac80211_hwsim_addr_match_data *md = data;
 481         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 482                 md->ret = true;
 483 }
 484
 485
 486 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 487                                       const u8 *addr)
 488 {
 489         struct mac80211_hwsim_addr_match_data md;
 490
 491         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 492                 return true;
 493
 494         md.ret = false;
 495         md.addr = addr;
 496         ieee80211_iterate_active_interfaces_atomic(data->hw,
 497                                                    IEEE80211_IFACE_ITER_NORMAL,
 498                                                    mac80211_hwsim_addr_iter,
 499                                                    &md);
 500
 501         return md.ret;
 502 }
 503
 504 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 505                                        struct sk_buff *my_skb,
 506                                        int dst_portid)
 507 {
 508         struct sk_buff *skb;
 509         struct mac80211_hwsim_data *data = hw->priv;
 510         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 511         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 512         void *msg_head;
 513         unsigned int hwsim_flags = 0;
 514         int i;
 515         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 516
 517         if (data->ps != PS_DISABLED)
 518                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 519         /* If the queue contains MAX_QUEUE skb's drop some */
 520         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 521                 /* Droping until WARN_QUEUE level */
 522                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 523                         skb_dequeue(&data->pending);
 524         }
 525
 526         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 527         if (skb == NULL)
 528                 goto nla_put_failure;
 529
 530         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 531                                HWSIM_CMD_FRAME);
 532         if (msg_head == NULL) {
 533                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 534                 goto nla_put_failure;
 535         }
 536
 537         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 538                     sizeof(struct mac_address), data->addresses[1].addr))
 539                 goto nla_put_failure;
 540
 541         /* We get the skb->data */
 542         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 543                 goto nla_put_failure;
 544
 545         /* We get the flags for this transmission, and we translate them to
 546            wmediumd flags  */
 547
 548         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 549                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 550
 551         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 552                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 553
 554         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 555                 goto nla_put_failure;
 556
 557         /* We get the tx control (rate and retries) info*/
 558
 559         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 560                 tx_attempts[i].idx = info->status.rates[i].idx;
 561                 tx_attempts[i].count = info->status.rates[i].count;
 562         }
 563
 564         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 565                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 566                     tx_attempts))
 567                 goto nla_put_failure;
 568
 569         /* We create a cookie to identify this skb */
 570         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 571                 goto nla_put_failure;
 572
 573         genlmsg_end(skb, msg_head);
 574         genlmsg_unicast(&init_net, skb, dst_portid);
 575
 576         /* Enqueue the packet */
 577         skb_queue_tail(&data->pending, my_skb);
 578         return;
 579
 580 nla_put_failure:
 581         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 582 }
 583
 584 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 585                                struct ieee80211_channel *c2)
 586 {
 587         if (!c1 || !c2)
 588                 return false;
 589
 590         return c1->center_freq == c2->center_freq;
 591 }
 592
 593 struct tx_iter_data {
 594         struct ieee80211_channel *channel;
 595         bool receive;
 596 };
 597
 598 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 599                                    struct ieee80211_vif *vif)
 600 {
 601         struct tx_iter_data *data = _data;
 602
 603         if (!vif->chanctx_conf)
 604                 return;
 605
 606         if (!hwsim_chans_compat(data->channel,
 607                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 608                 return;
 609
 610         data->receive = true;
 611 }
 612
 613 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 614                                           struct sk_buff *skb,
 615                                           struct ieee80211_channel *chan)
 616 {
 617         struct mac80211_hwsim_data *data = hw->priv, *data2;
 618         bool ack = false;
 619         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 620         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 621         struct ieee80211_rx_status rx_status;
 622         u64 now;
 623
 624         memset(&rx_status, 0, sizeof(rx_status));
 625         rx_status.flag |= RX_FLAG_MACTIME_START;
 626         rx_status.freq = chan->center_freq;
 627         rx_status.band = chan->band;
 628         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 629                 rx_status.rate_idx =
 630                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
 631                 rx_status.vht_nss =
 632                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
 633                 rx_status.flag |= RX_FLAG_VHT;
 634         } else {
 635                 rx_status.rate_idx = info->control.rates[0].idx;
 636                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 637                         rx_status.flag |= RX_FLAG_HT;
 638         }
 639         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 640                 rx_status.flag |= RX_FLAG_40MHZ;
 641         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 642                 rx_status.flag |= RX_FLAG_SHORT_GI;
 643         /* TODO: simulate real signal strength (and optional packet loss) */
 644         rx_status.signal = data->power_level - 50;
 645
 646         if (data->ps != PS_DISABLED)
 647                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 648
 649         /* release the skb's source info */
 650         skb_orphan(skb);
 651         skb_dst_drop(skb);
 652         skb->mark = 0;
 653         secpath_reset(skb);
 654         nf_reset(skb);
 655
 656         /*
 657          * Get absolute mactime here so all HWs RX at the "same time", and
 658          * absolute TX time for beacon mactime so the timestamp matches.
 659          * Giving beacons a different mactime than non-beacons looks messy, but
 660          * it helps the Toffset be exact and a ~10us mactime discrepancy
 661          * probably doesn't really matter.
 662          */
 663         if (ieee80211_is_beacon(hdr->frame_control) ||
 664             ieee80211_is_probe_resp(hdr->frame_control))
 665                 now = data->abs_bcn_ts;
 666         else
 667                 now = mac80211_hwsim_get_tsf_raw();
 668
 669         /* Copy skb to all enabled radios that are on the current frequency */
 670         spin_lock(&hwsim_radio_lock);
 671         list_for_each_entry(data2, &hwsim_radios, list) {
 672                 struct sk_buff *nskb;
 673                 struct tx_iter_data tx_iter_data = {
 674                         .receive = false,
 675                         .channel = chan,
 676                 };
 677
 678                 if (data == data2)
 679                         continue;
 680
 681                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 682                     !hwsim_ps_rx_ok(data2, skb))
 683                         continue;
 684
 685                 if (!(data->group & data2->group))
 686                         continue;
 687
 688                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 689                     !hwsim_chans_compat(chan, data2->channel)) {
 690                         ieee80211_iterate_active_interfaces_atomic(
 691                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 692                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 693                         if (!tx_iter_data.receive)
 694                                 continue;
 695                 }
 696
 697                 /*
 698                  * reserve some space for our vendor and the normal
 699                  * radiotap header, since we're copying anyway
 700                  */
 701                 if (skb->len < PAGE_SIZE && paged_rx) {
 702                         struct page *page = alloc_page(GFP_ATOMIC);
 703
 704                         if (!page)
 705                                 continue;
 706
 707                         nskb = dev_alloc_skb(128);
 708                         if (!nskb) {
 709                                 __free_page(page);
 710                                 continue;
 711                         }
 712
 713                         memcpy(page_address(page), skb->data, skb->len);
 714                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 715                 } else {
 716                         nskb = skb_copy(skb, GFP_ATOMIC);
 717                         if (!nskb)
 718                                 continue;
 719                 }
 720
 721                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 722                         ack = true;
 723
 724                 rx_status.mactime = now + data2->tsf_offset;
 725 #if 0
 726                 /*
 727                  * Don't enable this code by default as the OUI 00:00:00
 728                  * is registered to Xerox so we shouldn't use it here, it
 729                  * might find its way into pcap files.
 730                  * Note that this code requires the headroom in the SKB
 731                  * that was allocated earlier.
 732                  */
 733                 rx_status.vendor_radiotap_oui[0] = 0x00;
 734                 rx_status.vendor_radiotap_oui[1] = 0x00;
 735                 rx_status.vendor_radiotap_oui[2] = 0x00;
 736                 rx_status.vendor_radiotap_subns = 127;
 737                 /*
 738                  * Radiotap vendor namespaces can (and should) also be
 739                  * split into fields by using the standard radiotap
 740                  * presence bitmap mechanism. Use just BIT(0) here for
 741                  * the presence bitmap.
 742                  */
 743                 rx_status.vendor_radiotap_bitmap = BIT(0);
 744                 /* We have 8 bytes of (dummy) data */
 745                 rx_status.vendor_radiotap_len = 8;
 746                 /* For testing, also require it to be aligned */
 747                 rx_status.vendor_radiotap_align = 8;
 748                 /* push the data */
 749                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 750 #endif
 751
 752                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 753                 ieee80211_rx_irqsafe(data2->hw, nskb);
 754         }
 755         spin_unlock(&hwsim_radio_lock);
 756
 757         return ack;
 758 }
 759
 760 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 761                               struct ieee80211_tx_control *control,
 762                               struct sk_buff *skb)
 763 {
 764         struct mac80211_hwsim_data *data = hw->priv;
 765         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 766         struct ieee80211_chanctx_conf *chanctx_conf;
 767         struct ieee80211_channel *channel;
 768         bool ack;
 769         u32 _portid;
 770
 771         if (WARN_ON(skb->len < 10)) {
 772                 /* Should not happen; just a sanity check for addr1 use */
 773                 ieee80211_free_txskb(hw, skb);
 774                 return;
 775         }
 776
 777         if (data->channels == 1) {
 778                 channel = data->channel;
 779         } else if (txi->hw_queue == 4) {
 780                 channel = data->tmp_chan;
 781         } else {
 782                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 783                 if (chanctx_conf)
 784                         channel = chanctx_conf->def.chan;
 785                 else
 786                         channel = NULL;
 787         }
 788
 789         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 790                 ieee80211_free_txskb(hw, skb);
 791                 return;
 792         }
 793
 794         if (data->idle && !data->tmp_chan) {
 795                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 796                 ieee80211_free_txskb(hw, skb);
 797                 return;
 798         }
 799
 800         if (txi->control.vif)
 801                 hwsim_check_magic(txi->control.vif);
 802         if (control->sta)
 803                 hwsim_check_sta_magic(control->sta);
 804
 805         if (rctbl)
 806                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
 807                                        txi->control.rates,
 808                                        ARRAY_SIZE(txi->control.rates));
 809
 810         txi->rate_driver_data[0] = channel;
 811         mac80211_hwsim_monitor_rx(hw, skb, channel);
 812
 813         /* wmediumd mode check */
 814         _portid = ACCESS_ONCE(wmediumd_portid);
 815
 816         if (_portid)
 817                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 818
 819         /* NO wmediumd detected, perfect medium simulation */
 820         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 821
 822         if (ack && skb->len >= 16) {
 823                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 824                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 825         }
 826
 827         ieee80211_tx_info_clear_status(txi);
 828
 829         /* frame was transmitted at most favorable rate at first attempt */
 830         txi->control.rates[0].count = 1;
 831         txi->control.rates[1].idx = -1;
 832
 833         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 834                 txi->flags |= IEEE80211_TX_STAT_ACK;
 835         ieee80211_tx_status_irqsafe(hw, skb);
 836 }
 837
 838
 839 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 840 {
 841         struct mac80211_hwsim_data *data = hw->priv;
 842         wiphy_debug(hw->wiphy, "%s\n", __func__);
 843         data->started = true;
 844         return 0;
 845 }
 846
 847
 848 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 849 {
 850         struct mac80211_hwsim_data *data = hw->priv;
 851         data->started = false;
 852         tasklet_hrtimer_cancel(&data->beacon_timer);
 853         wiphy_debug(hw->wiphy, "%s\n", __func__);
 854 }
 855
 856
 857 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 858                                         struct ieee80211_vif *vif)
 859 {
 860         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 861                     __func__, ieee80211_vif_type_p2p(vif),
 862                     vif->addr);
 863         hwsim_set_magic(vif);
 864
 865         vif->cab_queue = 0;
 866         vif->hw_queue[IEEE80211_AC_VO] = 0;
 867         vif->hw_queue[IEEE80211_AC_VI] = 1;
 868         vif->hw_queue[IEEE80211_AC_BE] = 2;
 869         vif->hw_queue[IEEE80211_AC_BK] = 3;
 870
 871         return 0;
 872 }
 873
 874
 875 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 876                                            struct ieee80211_vif *vif,
 877                                            enum nl80211_iftype newtype,
 878                                            bool newp2p)
 879 {
 880         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 881         wiphy_debug(hw->wiphy,
 882                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 883                     __func__, ieee80211_vif_type_p2p(vif),
 884                     newtype, vif->addr);
 885         hwsim_check_magic(vif);
 886
 887         /*
 888          * interface may change from non-AP to AP in
 889          * which case this needs to be set up again
 890          */
 891         vif->cab_queue = 0;
 892
 893         return 0;
 894 }
 895
 896 static void mac80211_hwsim_remove_interface(
 897         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 898 {
 899         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 900                     __func__, ieee80211_vif_type_p2p(vif),
 901                     vif->addr);
 902         hwsim_check_magic(vif);
 903         hwsim_clear_magic(vif);
 904 }
 905
 906 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 907                                     struct sk_buff *skb,
 908                                     struct ieee80211_channel *chan)
 909 {
 910         u32 _pid = ACCESS_ONCE(wmediumd_portid);
 911
 912         if (rctbl) {
 913                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 914                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
 915                                        txi->control.rates,
 916                                        ARRAY_SIZE(txi->control.rates));
 917         }
 918
 919         mac80211_hwsim_monitor_rx(hw, skb, chan);
 920
 921         if (_pid)
 922                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 923
 924         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
 925         dev_kfree_skb(skb);
 926 }
 927
 928 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 929                                      struct ieee80211_vif *vif)
 930 {
 931         struct mac80211_hwsim_data *data = arg;
 932         struct ieee80211_hw *hw = data->hw;
 933         struct ieee80211_tx_info *info;
 934         struct ieee80211_rate *txrate;
 935         struct ieee80211_mgmt *mgmt;
 936         struct sk_buff *skb;
 937
 938         hwsim_check_magic(vif);
 939
 940         if (vif->type != NL80211_IFTYPE_AP &&
 941             vif->type != NL80211_IFTYPE_MESH_POINT &&
 942             vif->type != NL80211_IFTYPE_ADHOC)
 943                 return;
 944
 945         skb = ieee80211_beacon_get(hw, vif);
 946         if (skb == NULL)
 947                 return;
 948         info = IEEE80211_SKB_CB(skb);
 949         if (rctbl)
 950                 ieee80211_get_tx_rates(vif, NULL, skb,
 951                                        info->control.rates,
 952                                        ARRAY_SIZE(info->control.rates));
 953
 954         txrate = ieee80211_get_tx_rate(hw, info);
 955
 956         mgmt = (struct ieee80211_mgmt *) skb->data;
 957         /* fake header transmission time */
 958         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
 959         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
 960                                                data->tsf_offset +
 961                                                24 * 8 * 10 / txrate->bitrate);
 962
 963         mac80211_hwsim_tx_frame(hw, skb,
 964                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 965 }
 966
 967 static enum hrtimer_restart
 968 mac80211_hwsim_beacon(struct hrtimer *timer)
 969 {
 970         struct mac80211_hwsim_data *data =
 971                 container_of(timer, struct mac80211_hwsim_data,
 972                              beacon_timer.timer);
 973         struct ieee80211_hw *hw = data->hw;
 974         u64 bcn_int = data->beacon_int;
 975         ktime_t next_bcn;
 976
 977         if (!data->started)
 978                 goto out;
 979
 980         ieee80211_iterate_active_interfaces_atomic(
 981                 hw, IEEE80211_IFACE_ITER_NORMAL,
 982                 mac80211_hwsim_beacon_tx, data);
 983
 984         /* beacon at new TBTT + beacon interval */
 985         if (data->bcn_delta) {
 986                 bcn_int -= data->bcn_delta;
 987                 data->bcn_delta = 0;
 988         }
 989
 990         next_bcn = ktime_add(hrtimer_get_expires(timer),
 991                              ns_to_ktime(bcn_int * 1000));
 992         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
 993 out:
 994         return HRTIMER_NORESTART;
 995 }
 996
 997 static const char * const hwsim_chanwidths[] = {
 998         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
 999         [NL80211_CHAN_WIDTH_20] = "ht20",
1000         [NL80211_CHAN_WIDTH_40] = "ht40",
1001         [NL80211_CHAN_WIDTH_80] = "vht80",
1002         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1003         [NL80211_CHAN_WIDTH_160] = "vht160",
1004 };
1005
1006 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1007 {
1008         struct mac80211_hwsim_data *data = hw->priv;
1009         struct ieee80211_conf *conf = &hw->conf;
1010         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1011                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1012                 [IEEE80211_SMPS_OFF] = "off",
1013                 [IEEE80211_SMPS_STATIC] = "static",
1014                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1015         };
1016
1017         if (conf->chandef.chan)
1018                 wiphy_debug(hw->wiphy,
1019                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1020                             __func__,
1021                             conf->chandef.chan->center_freq,
1022                             conf->chandef.center_freq1,
1023                             conf->chandef.center_freq2,
1024                             hwsim_chanwidths[conf->chandef.width],
1025                             !!(conf->flags & IEEE80211_CONF_IDLE),
1026                             !!(conf->flags & IEEE80211_CONF_PS),
1027                             smps_modes[conf->smps_mode]);
1028         else
1029                 wiphy_debug(hw->wiphy,
1030                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1031                             __func__,
1032                             !!(conf->flags & IEEE80211_CONF_IDLE),
1033                             !!(conf->flags & IEEE80211_CONF_PS),
1034                             smps_modes[conf->smps_mode]);
1035
1036         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1037
1038         data->channel = conf->chandef.chan;
1039
1040         WARN_ON(data->channel && data->channels > 1);
1041
1042         data->power_level = conf->power_level;
1043         if (!data->started || !data->beacon_int)
1044                 tasklet_hrtimer_cancel(&data->beacon_timer);
1045         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1046                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1047                 u32 bcn_int = data->beacon_int;
1048                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1049
1050                 tasklet_hrtimer_start(&data->beacon_timer,
1051                                       ns_to_ktime(until_tbtt * 1000),
1052                                       HRTIMER_MODE_REL);
1053         }
1054
1055         return 0;
1056 }
1057
1058
1059 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1060                                             unsigned int changed_flags,
1061                                             unsigned int *total_flags,u64 multicast)
1062 {
1063         struct mac80211_hwsim_data *data = hw->priv;
1064
1065         wiphy_debug(hw->wiphy, "%s\n", __func__);
1066
1067         data->rx_filter = 0;
1068         if (*total_flags & FIF_PROMISC_IN_BSS)
1069                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1070         if (*total_flags & FIF_ALLMULTI)
1071                 data->rx_filter |= FIF_ALLMULTI;
1072
1073         *total_flags = data->rx_filter;
1074 }
1075
1076 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1077                                        struct ieee80211_vif *vif)
1078 {
1079         unsigned int *count = data;
1080         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1081
1082         if (vp->bcn_en)
1083                 (*count)++;
1084 }
1085
1086 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1087                                             struct ieee80211_vif *vif,
1088                                             struct ieee80211_bss_conf *info,
1089                                             u32 changed)
1090 {
1091         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1092         struct mac80211_hwsim_data *data = hw->priv;
1093
1094         hwsim_check_magic(vif);
1095
1096         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1097                     __func__, changed, vif->addr);
1098
1099         if (changed & BSS_CHANGED_BSSID) {
1100                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1101                             __func__, info->bssid);
1102                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1103         }
1104
1105         if (changed & BSS_CHANGED_ASSOC) {
1106                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1107                             info->assoc, info->aid);
1108                 vp->assoc = info->assoc;
1109                 vp->aid = info->aid;
1110         }
1111
1112         if (changed & BSS_CHANGED_BEACON_INT) {
1113                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1114                 data->beacon_int = info->beacon_int * 1024;
1115         }
1116
1117         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1118                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1119                 vp->bcn_en = info->enable_beacon;
1120                 if (data->started &&
1121                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1122                     info->enable_beacon) {
1123                         u64 tsf, until_tbtt;
1124                         u32 bcn_int;
1125                         if (WARN_ON(!data->beacon_int))
1126                                 data->beacon_int = 1000 * 1024;
1127                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1128                         bcn_int = data->beacon_int;
1129                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1130                         tasklet_hrtimer_start(&data->beacon_timer,
1131                                               ns_to_ktime(until_tbtt * 1000),
1132                                               HRTIMER_MODE_REL);
1133                 } else if (!info->enable_beacon) {
1134                         unsigned int count = 0;
1135                         ieee80211_iterate_active_interfaces_atomic(
1136                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1137                                 mac80211_hwsim_bcn_en_iter, &count);
1138                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1139                                     count);
1140                         if (count == 0)
1141                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1142                 }
1143         }
1144
1145         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1146                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1147                             info->use_cts_prot);
1148         }
1149
1150         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1151                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1152                             info->use_short_preamble);
1153         }
1154
1155         if (changed & BSS_CHANGED_ERP_SLOT) {
1156                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1157         }
1158
1159         if (changed & BSS_CHANGED_HT) {
1160                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1161                             info->ht_operation_mode);
1162         }
1163
1164         if (changed & BSS_CHANGED_BASIC_RATES) {
1165                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1166                             (unsigned long long) info->basic_rates);
1167         }
1168
1169         if (changed & BSS_CHANGED_TXPOWER)
1170                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1171 }
1172
1173 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1174                                   struct ieee80211_vif *vif,
1175                                   struct ieee80211_sta *sta)
1176 {
1177         hwsim_check_magic(vif);
1178         hwsim_set_sta_magic(sta);
1179
1180         return 0;
1181 }
1182
1183 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1184                                      struct ieee80211_vif *vif,
1185                                      struct ieee80211_sta *sta)
1186 {
1187         hwsim_check_magic(vif);
1188         hwsim_clear_sta_magic(sta);
1189
1190         return 0;
1191 }
1192
1193 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1194                                       struct ieee80211_vif *vif,
1195                                       enum sta_notify_cmd cmd,
1196                                       struct ieee80211_sta *sta)
1197 {
1198         hwsim_check_magic(vif);
1199
1200         switch (cmd) {
1201         case STA_NOTIFY_SLEEP:
1202         case STA_NOTIFY_AWAKE:
1203                 /* TODO: make good use of these flags */
1204                 break;
1205         default:
1206                 WARN(1, "Invalid sta notify: %d\n", cmd);
1207                 break;
1208         }
1209 }
1210
1211 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1212                                   struct ieee80211_sta *sta,
1213                                   bool set)
1214 {
1215         hwsim_check_sta_magic(sta);
1216         return 0;
1217 }
1218
1219 static int mac80211_hwsim_conf_tx(
1220         struct ieee80211_hw *hw,
1221         struct ieee80211_vif *vif, u16 queue,
1222         const struct ieee80211_tx_queue_params *params)
1223 {
1224         wiphy_debug(hw->wiphy,
1225                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1226                     __func__, queue,
1227                     params->txop, params->cw_min,
1228                     params->cw_max, params->aifs);
1229         return 0;
1230 }
1231
1232 static int mac80211_hwsim_get_survey(
1233         struct ieee80211_hw *hw, int idx,
1234         struct survey_info *survey)
1235 {
1236         struct ieee80211_conf *conf = &hw->conf;
1237
1238         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1239
1240         if (idx != 0)
1241                 return -ENOENT;
1242
1243         /* Current channel */
1244         survey->channel = conf->chandef.chan;
1245
1246         /*
1247          * Magically conjured noise level --- this is only ok for simulated hardware.
1248          *
1249          * A real driver which cannot determine the real channel noise MUST NOT
1250          * report any noise, especially not a magically conjured one :-)
1251          */
1252         survey->filled = SURVEY_INFO_NOISE_DBM;
1253         survey->noise = -92;
1254
1255         return 0;
1256 }
1257
1258 #ifdef CONFIG_NL80211_TESTMODE
1259 /*
1260  * This section contains example code for using netlink
1261  * attributes with the testmode command in nl80211.
1262  */
1263
1264 /* These enums need to be kept in sync with userspace */
1265 enum hwsim_testmode_attr {
1266         __HWSIM_TM_ATTR_INVALID = 0,
1267         HWSIM_TM_ATTR_CMD       = 1,
1268         HWSIM_TM_ATTR_PS        = 2,
1269
1270         /* keep last */
1271         __HWSIM_TM_ATTR_AFTER_LAST,
1272         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1273 };
1274
1275 enum hwsim_testmode_cmd {
1276         HWSIM_TM_CMD_SET_PS             = 0,
1277         HWSIM_TM_CMD_GET_PS             = 1,
1278         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1279         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1280 };
1281
1282 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1283         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1284         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1285 };
1286
1287 static int hwsim_fops_ps_write(void *dat, u64 val);
1288
1289 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1290                                        struct ieee80211_vif *vif,
1291                                        void *data, int len)
1292 {
1293         struct mac80211_hwsim_data *hwsim = hw->priv;
1294         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1295         struct sk_buff *skb;
1296         int err, ps;
1297
1298         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1299                         hwsim_testmode_policy);
1300         if (err)
1301                 return err;
1302
1303         if (!tb[HWSIM_TM_ATTR_CMD])
1304                 return -EINVAL;
1305
1306         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1307         case HWSIM_TM_CMD_SET_PS:
1308                 if (!tb[HWSIM_TM_ATTR_PS])
1309                         return -EINVAL;
1310                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1311                 return hwsim_fops_ps_write(hwsim, ps);
1312         case HWSIM_TM_CMD_GET_PS:
1313                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1314                                                 nla_total_size(sizeof(u32)));
1315                 if (!skb)
1316                         return -ENOMEM;
1317                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1318                         goto nla_put_failure;
1319                 return cfg80211_testmode_reply(skb);
1320         case HWSIM_TM_CMD_STOP_QUEUES:
1321                 ieee80211_stop_queues(hw);
1322                 return 0;
1323         case HWSIM_TM_CMD_WAKE_QUEUES:
1324                 ieee80211_wake_queues(hw);
1325                 return 0;
1326         default:
1327                 return -EOPNOTSUPP;
1328         }
1329
1330  nla_put_failure:
1331         kfree_skb(skb);
1332         return -ENOBUFS;
1333 }
1334 #endif
1335
1336 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1337                                        struct ieee80211_vif *vif,
1338                                        enum ieee80211_ampdu_mlme_action action,
1339                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1340                                        u8 buf_size)
1341 {
1342         switch (action) {
1343         case IEEE80211_AMPDU_TX_START:
1344                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1345                 break;
1346         case IEEE80211_AMPDU_TX_STOP_CONT:
1347         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1348         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1349                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1350                 break;
1351         case IEEE80211_AMPDU_TX_OPERATIONAL:
1352                 break;
1353         case IEEE80211_AMPDU_RX_START:
1354         case IEEE80211_AMPDU_RX_STOP:
1355                 break;
1356         default:
1357                 return -EOPNOTSUPP;
1358         }
1359
1360         return 0;
1361 }
1362
1363 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1364 {
1365         /* Not implemented, queues only on kernel side */
1366 }
1367
1368 static void hw_scan_work(struct work_struct *work)
1369 {
1370         struct mac80211_hwsim_data *hwsim =
1371                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1372         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1373         int dwell, i;
1374
1375         mutex_lock(&hwsim->mutex);
1376         if (hwsim->scan_chan_idx >= req->n_channels) {
1377                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1378                 ieee80211_scan_completed(hwsim->hw, false);
1379                 hwsim->hw_scan_request = NULL;
1380                 hwsim->hw_scan_vif = NULL;
1381                 hwsim->tmp_chan = NULL;
1382                 mutex_unlock(&hwsim->mutex);
1383                 return;
1384         }
1385
1386         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1387                     req->channels[hwsim->scan_chan_idx]->center_freq);
1388
1389         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1390         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1391             !req->n_ssids) {
1392                 dwell = 120;
1393         } else {
1394                 dwell = 30;
1395                 /* send probes */
1396                 for (i = 0; i < req->n_ssids; i++) {
1397                         struct sk_buff *probe;
1398
1399                         probe = ieee80211_probereq_get(hwsim->hw,
1400                                                        hwsim->hw_scan_vif,
1401                                                        req->ssids[i].ssid,
1402                                                        req->ssids[i].ssid_len,
1403                                                        req->ie_len);
1404                         if (!probe)
1405                                 continue;
1406
1407                         if (req->ie_len)
1408                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1409                                        req->ie_len);
1410
1411                         local_bh_disable();
1412                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1413                                                 hwsim->tmp_chan);
1414                         local_bh_enable();
1415                 }
1416         }
1417         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1418                                      msecs_to_jiffies(dwell));
1419         hwsim->scan_chan_idx++;
1420         mutex_unlock(&hwsim->mutex);
1421 }
1422
1423 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1424                                   struct ieee80211_vif *vif,
1425                                   struct cfg80211_scan_request *req)
1426 {
1427         struct mac80211_hwsim_data *hwsim = hw->priv;
1428
1429         mutex_lock(&hwsim->mutex);
1430         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1431                 mutex_unlock(&hwsim->mutex);
1432                 return -EBUSY;
1433         }
1434         hwsim->hw_scan_request = req;
1435         hwsim->hw_scan_vif = vif;
1436         hwsim->scan_chan_idx = 0;
1437         mutex_unlock(&hwsim->mutex);
1438
1439         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1440
1441         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1442
1443         return 0;
1444 }
1445
1446 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1447                                           struct ieee80211_vif *vif)
1448 {
1449         struct mac80211_hwsim_data *hwsim = hw->priv;
1450
1451         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1452
1453         cancel_delayed_work_sync(&hwsim->hw_scan);
1454
1455         mutex_lock(&hwsim->mutex);
1456         ieee80211_scan_completed(hwsim->hw, true);
1457         hwsim->tmp_chan = NULL;
1458         hwsim->hw_scan_request = NULL;
1459         hwsim->hw_scan_vif = NULL;
1460         mutex_unlock(&hwsim->mutex);
1461 }
1462
1463 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1464 {
1465         struct mac80211_hwsim_data *hwsim = hw->priv;
1466
1467         mutex_lock(&hwsim->mutex);
1468
1469         if (hwsim->scanning) {
1470                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1471                 goto out;
1472         }
1473
1474         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1475         hwsim->scanning = true;
1476
1477 out:
1478         mutex_unlock(&hwsim->mutex);
1479 }
1480
1481 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1482 {
1483         struct mac80211_hwsim_data *hwsim = hw->priv;
1484
1485         mutex_lock(&hwsim->mutex);
1486
1487         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1488         hwsim->scanning = false;
1489
1490         mutex_unlock(&hwsim->mutex);
1491 }
1492
1493 static void hw_roc_done(struct work_struct *work)
1494 {
1495         struct mac80211_hwsim_data *hwsim =
1496                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1497
1498         mutex_lock(&hwsim->mutex);
1499         ieee80211_remain_on_channel_expired(hwsim->hw);
1500         hwsim->tmp_chan = NULL;
1501         mutex_unlock(&hwsim->mutex);
1502
1503         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1504 }
1505
1506 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1507                               struct ieee80211_vif *vif,
1508                               struct ieee80211_channel *chan,
1509                               int duration,
1510                               enum ieee80211_roc_type type)
1511 {
1512         struct mac80211_hwsim_data *hwsim = hw->priv;
1513
1514         mutex_lock(&hwsim->mutex);
1515         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1516                 mutex_unlock(&hwsim->mutex);
1517                 return -EBUSY;
1518         }
1519
1520         hwsim->tmp_chan = chan;
1521         mutex_unlock(&hwsim->mutex);
1522
1523         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1524                     chan->center_freq, duration);
1525
1526         ieee80211_ready_on_channel(hw);
1527
1528         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1529                                      msecs_to_jiffies(duration));
1530         return 0;
1531 }
1532
1533 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1534 {
1535         struct mac80211_hwsim_data *hwsim = hw->priv;
1536
1537         cancel_delayed_work_sync(&hwsim->roc_done);
1538
1539         mutex_lock(&hwsim->mutex);
1540         hwsim->tmp_chan = NULL;
1541         mutex_unlock(&hwsim->mutex);
1542
1543         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1544
1545         return 0;
1546 }
1547
1548 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1549                                       struct ieee80211_chanctx_conf *ctx)
1550 {
1551         hwsim_set_chanctx_magic(ctx);
1552         wiphy_debug(hw->wiphy,
1553                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1554                     ctx->def.chan->center_freq, ctx->def.width,
1555                     ctx->def.center_freq1, ctx->def.center_freq2);
1556         return 0;
1557 }
1558
1559 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1560                                           struct ieee80211_chanctx_conf *ctx)
1561 {
1562         wiphy_debug(hw->wiphy,
1563                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1564                     ctx->def.chan->center_freq, ctx->def.width,
1565                     ctx->def.center_freq1, ctx->def.center_freq2);
1566         hwsim_check_chanctx_magic(ctx);
1567         hwsim_clear_chanctx_magic(ctx);
1568 }
1569
1570 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1571                                           struct ieee80211_chanctx_conf *ctx,
1572                                           u32 changed)
1573 {
1574         hwsim_check_chanctx_magic(ctx);
1575         wiphy_debug(hw->wiphy,
1576                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1577                     ctx->def.chan->center_freq, ctx->def.width,
1578                     ctx->def.center_freq1, ctx->def.center_freq2);
1579 }
1580
1581 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1582                                              struct ieee80211_vif *vif,
1583                                              struct ieee80211_chanctx_conf *ctx)
1584 {
1585         hwsim_check_magic(vif);
1586         hwsim_check_chanctx_magic(ctx);
1587
1588         return 0;
1589 }
1590
1591 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1592                                                 struct ieee80211_vif *vif,
1593                                                 struct ieee80211_chanctx_conf *ctx)
1594 {
1595         hwsim_check_magic(vif);
1596         hwsim_check_chanctx_magic(ctx);
1597 }
1598
1599 static const struct ieee80211_ops mac80211_hwsim_ops = {
1600         .tx = mac80211_hwsim_tx,
1601         .start = mac80211_hwsim_start,
1602         .stop = mac80211_hwsim_stop,
1603         .add_interface = mac80211_hwsim_add_interface,
1604         .change_interface = mac80211_hwsim_change_interface,
1605         .remove_interface = mac80211_hwsim_remove_interface,
1606         .config = mac80211_hwsim_config,
1607         .configure_filter = mac80211_hwsim_configure_filter,
1608         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1609         .sta_add = mac80211_hwsim_sta_add,
1610         .sta_remove = mac80211_hwsim_sta_remove,
1611         .sta_notify = mac80211_hwsim_sta_notify,
1612         .set_tim = mac80211_hwsim_set_tim,
1613         .conf_tx = mac80211_hwsim_conf_tx,
1614         .get_survey = mac80211_hwsim_get_survey,
1615         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1616         .ampdu_action = mac80211_hwsim_ampdu_action,
1617         .sw_scan_start = mac80211_hwsim_sw_scan,
1618         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1619         .flush = mac80211_hwsim_flush,
1620         .get_tsf = mac80211_hwsim_get_tsf,
1621         .set_tsf = mac80211_hwsim_set_tsf,
1622 };
1623
1624 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
1625
1626 static void mac80211_hwsim_free(void)
1627 {
1628         struct list_head tmplist, *i, *tmp;
1629         struct mac80211_hwsim_data *data, *tmpdata;
1630
1631         INIT_LIST_HEAD(&tmplist);
1632
1633         spin_lock_bh(&hwsim_radio_lock);
1634         list_for_each_safe(i, tmp, &hwsim_radios)
1635                 list_move(i, &tmplist);
1636         spin_unlock_bh(&hwsim_radio_lock);
1637
1638         list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1639                 debugfs_remove_recursive(data->debugfs);
1640                 ieee80211_unregister_hw(data->hw);
1641                 device_release_driver(data->dev);
1642                 device_unregister(data->dev);
1643                 ieee80211_free_hw(data->hw);
1644         }
1645         class_destroy(hwsim_class);
1646 }
1647
1648 static struct platform_driver mac80211_hwsim_driver = {
1649         .driver = {
1650                 .name = "mac80211_hwsim",
1651                 .owner = THIS_MODULE,
1652         },
1653 };
1654
1655 static const struct net_device_ops hwsim_netdev_ops = {
1656         .ndo_start_xmit         = hwsim_mon_xmit,
1657         .ndo_change_mtu         = eth_change_mtu,
1658         .ndo_set_mac_address    = eth_mac_addr,
1659         .ndo_validate_addr      = eth_validate_addr,
1660 };
1661
1662 static void hwsim_mon_setup(struct net_device *dev)
1663 {
1664         dev->netdev_ops = &hwsim_netdev_ops;
1665         dev->destructor = free_netdev;
1666         ether_setup(dev);
1667         dev->tx_queue_len = 0;
1668         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1669         memset(dev->dev_addr, 0, ETH_ALEN);
1670         dev->dev_addr[0] = 0x12;
1671 }
1672
1673
1674 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1675 {
1676         struct mac80211_hwsim_data *data = dat;
1677         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1678         struct sk_buff *skb;
1679         struct ieee80211_pspoll *pspoll;
1680
1681         if (!vp->assoc)
1682                 return;
1683
1684         wiphy_debug(data->hw->wiphy,
1685                     "%s: send PS-Poll to %pM for aid %d\n",
1686                     __func__, vp->bssid, vp->aid);
1687
1688         skb = dev_alloc_skb(sizeof(*pspoll));
1689         if (!skb)
1690                 return;
1691         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1692         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1693                                             IEEE80211_STYPE_PSPOLL |
1694                                             IEEE80211_FCTL_PM);
1695         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1696         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1697         memcpy(pspoll->ta, mac, ETH_ALEN);
1698
1699         rcu_read_lock();
1700         mac80211_hwsim_tx_frame(data->hw, skb,
1701                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1702         rcu_read_unlock();
1703 }
1704
1705 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1706                                 struct ieee80211_vif *vif, int ps)
1707 {
1708         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1709         struct sk_buff *skb;
1710         struct ieee80211_hdr *hdr;
1711
1712         if (!vp->assoc)
1713                 return;
1714
1715         wiphy_debug(data->hw->wiphy,
1716                     "%s: send data::nullfunc to %pM ps=%d\n",
1717                     __func__, vp->bssid, ps);
1718
1719         skb = dev_alloc_skb(sizeof(*hdr));
1720         if (!skb)
1721                 return;
1722         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1723         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1724                                          IEEE80211_STYPE_NULLFUNC |
1725                                          (ps ? IEEE80211_FCTL_PM : 0));
1726         hdr->duration_id = cpu_to_le16(0);
1727         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1728         memcpy(hdr->addr2, mac, ETH_ALEN);
1729         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1730
1731         rcu_read_lock();
1732         mac80211_hwsim_tx_frame(data->hw, skb,
1733                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1734         rcu_read_unlock();
1735 }
1736
1737
1738 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1739                                    struct ieee80211_vif *vif)
1740 {
1741         struct mac80211_hwsim_data *data = dat;
1742         hwsim_send_nullfunc(data, mac, vif, 1);
1743 }
1744
1745
1746 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1747                                       struct ieee80211_vif *vif)
1748 {
1749         struct mac80211_hwsim_data *data = dat;
1750         hwsim_send_nullfunc(data, mac, vif, 0);
1751 }
1752
1753
1754 static int hwsim_fops_ps_read(void *dat, u64 *val)
1755 {
1756         struct mac80211_hwsim_data *data = dat;
1757         *val = data->ps;
1758         return 0;
1759 }
1760
1761 static int hwsim_fops_ps_write(void *dat, u64 val)
1762 {
1763         struct mac80211_hwsim_data *data = dat;
1764         enum ps_mode old_ps;
1765
1766         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1767             val != PS_MANUAL_POLL)
1768                 return -EINVAL;
1769
1770         old_ps = data->ps;
1771         data->ps = val;
1772
1773         if (val == PS_MANUAL_POLL) {
1774                 ieee80211_iterate_active_interfaces(data->hw,
1775                                                     IEEE80211_IFACE_ITER_NORMAL,
1776                                                     hwsim_send_ps_poll, data);
1777                 data->ps_poll_pending = true;
1778         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1779                 ieee80211_iterate_active_interfaces(data->hw,
1780                                                     IEEE80211_IFACE_ITER_NORMAL,
1781                                                     hwsim_send_nullfunc_ps,
1782                                                     data);
1783         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1784                 ieee80211_iterate_active_interfaces(data->hw,
1785                                                     IEEE80211_IFACE_ITER_NORMAL,
1786                                                     hwsim_send_nullfunc_no_ps,
1787                                                     data);
1788         }
1789
1790         return 0;
1791 }
1792
1793 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1794                         "%llu\n");
1795
1796 static int hwsim_write_simulate_radar(void *dat, u64 val)
1797 {
1798         struct mac80211_hwsim_data *data = dat;
1799
1800         ieee80211_radar_detected(data->hw);
1801
1802         return 0;
1803 }
1804
1805 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
1806                         hwsim_write_simulate_radar, "%llu\n");
1807
1808 static int hwsim_fops_group_read(void *dat, u64 *val)
1809 {
1810         struct mac80211_hwsim_data *data = dat;
1811         *val = data->group;
1812         return 0;
1813 }
1814
1815 static int hwsim_fops_group_write(void *dat, u64 val)
1816 {
1817         struct mac80211_hwsim_data *data = dat;
1818         data->group = val;
1819         return 0;
1820 }
1821
1822 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1823                         hwsim_fops_group_read, hwsim_fops_group_write,
1824                         "%llx\n");
1825
1826 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1827                              struct mac_address *addr)
1828 {
1829         struct mac80211_hwsim_data *data;
1830         bool _found = false;
1831
1832         spin_lock_bh(&hwsim_radio_lock);
1833         list_for_each_entry(data, &hwsim_radios, list) {
1834                 if (memcmp(data->addresses[1].addr, addr,
1835                           sizeof(struct mac_address)) == 0) {
1836                         _found = true;
1837                         break;
1838                 }
1839         }
1840         spin_unlock_bh(&hwsim_radio_lock);
1841
1842         if (!_found)
1843                 return NULL;
1844
1845         return data;
1846 }
1847
1848 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1849                                            struct genl_info *info)
1850 {
1851
1852         struct ieee80211_hdr *hdr;
1853         struct mac80211_hwsim_data *data2;
1854         struct ieee80211_tx_info *txi;
1855         struct hwsim_tx_rate *tx_attempts;
1856         unsigned long ret_skb_ptr;
1857         struct sk_buff *skb, *tmp;
1858         struct mac_address *src;
1859         unsigned int hwsim_flags;
1860
1861         int i;
1862         bool found = false;
1863
1864         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1865            !info->attrs[HWSIM_ATTR_FLAGS] ||
1866            !info->attrs[HWSIM_ATTR_COOKIE] ||
1867            !info->attrs[HWSIM_ATTR_TX_INFO])
1868                 goto out;
1869
1870         src = (struct mac_address *)nla_data(
1871                                    info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1872         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1873
1874         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1875
1876         data2 = get_hwsim_data_ref_from_addr(src);
1877
1878         if (data2 == NULL)
1879                 goto out;
1880
1881         /* look for the skb matching the cookie passed back from user */
1882         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1883                 if ((unsigned long)skb == ret_skb_ptr) {
1884                         skb_unlink(skb, &data2->pending);
1885                         found = true;
1886                         break;
1887                 }
1888         }
1889
1890         /* not found */
1891         if (!found)
1892                 goto out;
1893
1894         /* Tx info received because the frame was broadcasted on user space,
1895          so we get all the necessary info: tx attempts and skb control buff */
1896
1897         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1898                        info->attrs[HWSIM_ATTR_TX_INFO]);
1899
1900         /* now send back TX status */
1901         txi = IEEE80211_SKB_CB(skb);
1902
1903         ieee80211_tx_info_clear_status(txi);
1904
1905         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1906                 txi->status.rates[i].idx = tx_attempts[i].idx;
1907                 txi->status.rates[i].count = tx_attempts[i].count;
1908                 /*txi->status.rates[i].flags = 0;*/
1909         }
1910
1911         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1912
1913         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1914            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1915                 if (skb->len >= 16) {
1916                         hdr = (struct ieee80211_hdr *) skb->data;
1917                         mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
1918                                                    hdr->addr2);
1919                 }
1920                 txi->flags |= IEEE80211_TX_STAT_ACK;
1921         }
1922         ieee80211_tx_status_irqsafe(data2->hw, skb);
1923         return 0;
1924 out:
1925         return -EINVAL;
1926
1927 }
1928
1929 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1930                                           struct genl_info *info)
1931 {
1932
1933         struct mac80211_hwsim_data *data2;
1934         struct ieee80211_rx_status rx_status;
1935         struct mac_address *dst;
1936         int frame_data_len;
1937         char *frame_data;
1938         struct sk_buff *skb = NULL;
1939
1940         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1941             !info->attrs[HWSIM_ATTR_FRAME] ||
1942             !info->attrs[HWSIM_ATTR_RX_RATE] ||
1943             !info->attrs[HWSIM_ATTR_SIGNAL])
1944                 goto out;
1945
1946         dst = (struct mac_address *)nla_data(
1947                                    info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1948
1949         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1950         frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1951
1952         /* Allocate new skb here */
1953         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1954         if (skb == NULL)
1955                 goto err;
1956
1957         if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1958                 /* Copy the data */
1959                 memcpy(skb_put(skb, frame_data_len), frame_data,
1960                        frame_data_len);
1961         } else
1962                 goto err;
1963
1964         data2 = get_hwsim_data_ref_from_addr(dst);
1965
1966         if (data2 == NULL)
1967                 goto out;
1968
1969         /* check if radio is configured properly */
1970
1971         if (data2->idle || !data2->started)
1972                 goto out;
1973
1974         /*A frame is received from user space*/
1975         memset(&rx_status, 0, sizeof(rx_status));
1976         rx_status.freq = data2->channel->center_freq;
1977         rx_status.band = data2->channel->band;
1978         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1979         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1980
1981         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1982         ieee80211_rx_irqsafe(data2->hw, skb);
1983
1984         return 0;
1985 err:
1986         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1987         goto out;
1988 out:
1989         dev_kfree_skb(skb);
1990         return -EINVAL;
1991 }
1992
1993 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1994                                       struct genl_info *info)
1995 {
1996         if (info == NULL)
1997                 goto out;
1998
1999         wmediumd_portid = info->snd_portid;
2000
2001         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2002                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2003
2004         return 0;
2005 out:
2006         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2007         return -EINVAL;
2008 }
2009
2010 /* Generic Netlink operations array */
2011 static const struct genl_ops hwsim_ops[] = {
2012         {
2013                 .cmd = HWSIM_CMD_REGISTER,
2014                 .policy = hwsim_genl_policy,
2015                 .doit = hwsim_register_received_nl,
2016                 .flags = GENL_ADMIN_PERM,
2017         },
2018         {
2019                 .cmd = HWSIM_CMD_FRAME,
2020                 .policy = hwsim_genl_policy,
2021                 .doit = hwsim_cloned_frame_received_nl,
2022         },
2023         {
2024                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2025                 .policy = hwsim_genl_policy,
2026                 .doit = hwsim_tx_info_frame_received_nl,
2027         },
2028 };
2029
2030 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2031                                          unsigned long state,
2032                                          void *_notify)
2033 {
2034         struct netlink_notify *notify = _notify;
2035
2036         if (state != NETLINK_URELEASE)
2037                 return NOTIFY_DONE;
2038
2039         if (notify->portid == wmediumd_portid) {
2040                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2041                        " socket, switching to perfect channel medium\n");
2042                 wmediumd_portid = 0;
2043         }
2044         return NOTIFY_DONE;
2045
2046 }
2047
2048 static struct notifier_block hwsim_netlink_notifier = {
2049         .notifier_call = mac80211_hwsim_netlink_notify,
2050 };
2051
2052 static int hwsim_init_netlink(void)
2053 {
2054         int rc;
2055
2056         /* userspace test API hasn't been adjusted for multi-channel */
2057         if (channels > 1)
2058                 return 0;
2059
2060         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2061
2062         rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2063         if (rc)
2064                 goto failure;
2065
2066         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2067         if (rc)
2068                 goto failure;
2069
2070         return 0;
2071
2072 failure:
2073         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2074         return -EINVAL;
2075 }
2076
2077 static void hwsim_exit_netlink(void)
2078 {
2079         /* userspace test API hasn't been adjusted for multi-channel */
2080         if (channels > 1)
2081                 return;
2082
2083         /* unregister the notifier */
2084         netlink_unregister_notifier(&hwsim_netlink_notifier);
2085         /* unregister the family */
2086         genl_unregister_family(&hwsim_genl_family);
2087 }
2088
2089 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2090         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2091         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2092                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2093 #ifdef CONFIG_MAC80211_MESH
2094                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2095 #endif
2096                                  BIT(NL80211_IFTYPE_AP) |
2097                                  BIT(NL80211_IFTYPE_P2P_GO) },
2098         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2099 };
2100
2101 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
2102         { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
2103 };
2104
2105 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
2106         {
2107                 .limits = hwsim_if_limits,
2108                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
2109                 .max_interfaces = 2048,
2110                 .num_different_channels = 1,
2111         },
2112         {
2113                 .limits = hwsim_if_dfs_limits,
2114                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
2115                 .max_interfaces = 8,
2116                 .num_different_channels = 1,
2117                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2118                                        BIT(NL80211_CHAN_WIDTH_20) |
2119                                        BIT(NL80211_CHAN_WIDTH_40) |
2120                                        BIT(NL80211_CHAN_WIDTH_80) |
2121                                        BIT(NL80211_CHAN_WIDTH_160),
2122         }
2123 };
2124
2125 static int __init mac80211_hwsim_create_radio(int idx)
2126 {
2127         int err;
2128         u8 addr[ETH_ALEN];
2129         struct mac80211_hwsim_data *data;
2130         struct ieee80211_hw *hw;
2131         enum ieee80211_band band;
2132         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2133
2134         if (channels > 1)
2135                 ops = &mac80211_hwsim_mchan_ops;
2136         hw = ieee80211_alloc_hw(sizeof(*data), ops);
2137         if (!hw) {
2138                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2139                 err = -ENOMEM;
2140                 goto failed;
2141         }
2142         data = hw->priv;
2143         data->hw = hw;
2144
2145         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2146         if (IS_ERR(data->dev)) {
2147                 printk(KERN_DEBUG
2148                        "mac80211_hwsim: device_create failed (%ld)\n",
2149                        PTR_ERR(data->dev));
2150                 err = -ENOMEM;
2151                 goto failed_drvdata;
2152         }
2153         data->dev->driver = &mac80211_hwsim_driver.driver;
2154         err = device_bind_driver(data->dev);
2155         if (err != 0) {
2156                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2157                        err);
2158                 goto failed_hw;
2159         }
2160
2161         skb_queue_head_init(&data->pending);
2162
2163         SET_IEEE80211_DEV(hw, data->dev);
2164         memset(addr, 0, ETH_ALEN);
2165         addr[0] = 0x02;
2166         addr[3] = idx >> 8;
2167         addr[4] = idx;
2168         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2169         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2170         data->addresses[1].addr[0] |= 0x40;
2171         hw->wiphy->n_addresses = 2;
2172         hw->wiphy->addresses = data->addresses;
2173
2174         data->channels = channels;
2175
2176         if (data->channels > 1) {
2177                 hw->wiphy->max_scan_ssids = 255;
2178                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2179                 hw->wiphy->max_remain_on_channel_duration = 1000;
2180                 /* For channels > 1 DFS is not allowed */
2181                 hw->wiphy->n_iface_combinations = 1;
2182                 hw->wiphy->iface_combinations = &data->if_combination;
2183                 data->if_combination = hwsim_if_comb[0];
2184                 data->if_combination.num_different_channels = data->channels;
2185         } else {
2186                 hw->wiphy->iface_combinations = hwsim_if_comb;
2187                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2188         }
2189
2190         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2191         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2192
2193         hw->queues = 5;
2194         hw->offchannel_tx_hw_queue = 4;
2195         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2196                                      BIT(NL80211_IFTYPE_AP) |
2197                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2198                                      BIT(NL80211_IFTYPE_P2P_GO) |
2199                                      BIT(NL80211_IFTYPE_ADHOC) |
2200                                      BIT(NL80211_IFTYPE_MESH_POINT) |
2201                                      BIT(NL80211_IFTYPE_P2P_DEVICE);
2202
2203         hw->flags = IEEE80211_HW_MFP_CAPABLE |
2204                     IEEE80211_HW_SIGNAL_DBM |
2205                     IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2206                     IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2207                     IEEE80211_HW_AMPDU_AGGREGATION |
2208                     IEEE80211_HW_WANT_MONITOR_VIF |
2209                     IEEE80211_HW_QUEUE_CONTROL |
2210                     IEEE80211_HW_SUPPORTS_HT_CCK_RATES;
2211         if (rctbl)
2212                 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2213
2214         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2215                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2216                             WIPHY_FLAG_AP_UAPSD;
2217         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
2218
2219         /* ask mac80211 to reserve space for magic */
2220         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2221         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2222         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2223
2224         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2225                 sizeof(hwsim_channels_2ghz));
2226         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2227                 sizeof(hwsim_channels_5ghz));
2228         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2229
2230         for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2231                 struct ieee80211_supported_band *sband = &data->bands[band];
2232                 switch (band) {
2233                 case IEEE80211_BAND_2GHZ:
2234                         sband->channels = data->channels_2ghz;
2235                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2236                         sband->bitrates = data->rates;
2237                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2238                         break;
2239                 case IEEE80211_BAND_5GHZ:
2240                         sband->channels = data->channels_5ghz;
2241                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2242                         sband->bitrates = data->rates + 4;
2243                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2244                         break;
2245                 default:
2246                         continue;
2247                 }
2248
2249                 sband->ht_cap.ht_supported = true;
2250                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2251                                     IEEE80211_HT_CAP_GRN_FLD |
2252                                     IEEE80211_HT_CAP_SGI_40 |
2253                                     IEEE80211_HT_CAP_DSSSCCK40;
2254                 sband->ht_cap.ampdu_factor = 0x3;
2255                 sband->ht_cap.ampdu_density = 0x6;
2256                 memset(&sband->ht_cap.mcs, 0,
2257                        sizeof(sband->ht_cap.mcs));
2258                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2259                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2260                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2261
2262                 hw->wiphy->bands[band] = sband;
2263
2264                 sband->vht_cap.vht_supported = true;
2265                 sband->vht_cap.cap =
2266                         IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2267                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2268                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2269                         IEEE80211_VHT_CAP_RXLDPC |
2270                         IEEE80211_VHT_CAP_SHORT_GI_80 |
2271                         IEEE80211_VHT_CAP_SHORT_GI_160 |
2272                         IEEE80211_VHT_CAP_TXSTBC |
2273                         IEEE80211_VHT_CAP_RXSTBC_1 |
2274                         IEEE80211_VHT_CAP_RXSTBC_2 |
2275                         IEEE80211_VHT_CAP_RXSTBC_3 |
2276                         IEEE80211_VHT_CAP_RXSTBC_4 |
2277                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2278                 sband->vht_cap.vht_mcs.rx_mcs_map =
2279                         cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2280                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2281                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2282                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2283                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2284                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2285                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2286                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2287                 sband->vht_cap.vht_mcs.tx_mcs_map =
2288                         sband->vht_cap.vht_mcs.rx_mcs_map;
2289         }
2290
2291         /* By default all radios belong to the first group */
2292         data->group = 1;
2293         mutex_init(&data->mutex);
2294
2295         /* Enable frame retransmissions for lossy channels */
2296         hw->max_rates = 4;
2297         hw->max_rate_tries = 11;
2298
2299         err = ieee80211_register_hw(hw);
2300         if (err < 0) {
2301                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2302                        err);
2303                 goto failed_hw;
2304         }
2305
2306         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2307
2308         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2309         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2310         debugfs_create_file("group", 0666, data->debugfs, data,
2311                             &hwsim_fops_group);
2312         if (data->channels == 1)
2313                 debugfs_create_file("dfs_simulate_radar", 0222,
2314                                     data->debugfs,
2315                                     data, &hwsim_simulate_radar);
2316
2317         tasklet_hrtimer_init(&data->beacon_timer,
2318                              mac80211_hwsim_beacon,
2319                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2320
2321         spin_lock_bh(&hwsim_radio_lock);
2322         list_add_tail(&data->list, &hwsim_radios);
2323         spin_unlock_bh(&hwsim_radio_lock);
2324
2325         return 0;
2326
2327 failed_hw:
2328         device_unregister(data->dev);
2329 failed_drvdata:
2330         ieee80211_free_hw(hw);
2331 failed:
2332         return err;
2333 }
2334
2335 static int __init init_mac80211_hwsim(void)
2336 {
2337         int i, err;
2338
2339         if (radios < 1 || radios > 100)
2340                 return -EINVAL;
2341
2342         if (channels < 1)
2343                 return -EINVAL;
2344
2345         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
2346         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
2347         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
2348         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
2349         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
2350         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
2351         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
2352         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
2353         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
2354         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
2355         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
2356                 mac80211_hwsim_assign_vif_chanctx;
2357         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
2358                 mac80211_hwsim_unassign_vif_chanctx;
2359
2360         spin_lock_init(&hwsim_radio_lock);
2361         INIT_LIST_HEAD(&hwsim_radios);
2362
2363         err = platform_driver_register(&mac80211_hwsim_driver);
2364         if (err)
2365                 return err;
2366
2367         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2368         if (IS_ERR(hwsim_class)) {
2369                 err = PTR_ERR(hwsim_class);
2370                 goto out_unregister_driver;
2371         }
2372
2373         for (i = 0; i < radios; i++) {
2374                 err = mac80211_hwsim_create_radio(i);
2375                 if (err)
2376                         goto out_free_radios;
2377         }
2378
2379         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2380         if (hwsim_mon == NULL) {
2381                 err = -ENOMEM;
2382                 goto out_free_radios;
2383         }
2384
2385         rtnl_lock();
2386         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2387         if (err < 0) {
2388                 rtnl_unlock();
2389                 goto out_free_radios;
2390         }
2391
2392         err = register_netdevice(hwsim_mon);
2393         if (err < 0) {
2394                 rtnl_unlock();
2395                 goto out_free_mon;
2396         }
2397         rtnl_unlock();
2398
2399         err = hwsim_init_netlink();
2400         if (err < 0)
2401                 goto out_free_mon;
2402
2403         return 0;
2404
2405 out_free_mon:
2406         free_netdev(hwsim_mon);
2407 out_free_radios:
2408         mac80211_hwsim_free();
2409 out_unregister_driver:
2410         platform_driver_unregister(&mac80211_hwsim_driver);
2411         return err;
2412 }
2413 module_init(init_mac80211_hwsim);
2414
2415 static void __exit exit_mac80211_hwsim(void)
2416 {
2417         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2418
2419         hwsim_exit_netlink();
2420
2421         mac80211_hwsim_free();
2422         unregister_netdev(hwsim_mon);
2423         platform_driver_unregister(&mac80211_hwsim_driver);
2424 }
2425 module_exit(exit_mac80211_hwsim);