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 static int hwsim_radio_idx;
 221
 222 struct mac80211_hwsim_data {
 223         struct list_head list;
 224         struct ieee80211_hw *hw;
 225         struct device *dev;
 226         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 227         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 228         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 229         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 230         struct ieee80211_iface_combination if_combination;
 231
 232         struct mac_address addresses[2];
 233         int channels;
 234
 235         struct ieee80211_channel *tmp_chan;
 236         struct delayed_work roc_done;
 237         struct delayed_work hw_scan;
 238         struct cfg80211_scan_request *hw_scan_request;
 239         struct ieee80211_vif *hw_scan_vif;
 240         int scan_chan_idx;
 241
 242         struct ieee80211_channel *channel;
 243         u64 beacon_int  /* beacon interval in us */;
 244         unsigned int rx_filter;
 245         bool started, idle, scanning;
 246         struct mutex mutex;
 247         struct tasklet_hrtimer beacon_timer;
 248         enum ps_mode {
 249                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 250         } ps;
 251         bool ps_poll_pending;
 252         struct dentry *debugfs;
 253
 254         struct sk_buff_head pending;    /* packets pending */
 255         /*
 256          * Only radios in the same group can communicate together (the
 257          * channel has to match too). Each bit represents a group. A
 258          * radio can be in more then one group.
 259          */
 260         u64 group;
 261
 262         int power_level;
 263
 264         /* difference between this hw's clock and the real clock, in usecs */
 265         s64 tsf_offset;
 266         s64 bcn_delta;
 267         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 268         u64 abs_bcn_ts;
 269 };
 270
 271
 272 struct hwsim_radiotap_hdr {
 273         struct ieee80211_radiotap_header hdr;
 274         __le64 rt_tsft;
 275         u8 rt_flags;
 276         u8 rt_rate;
 277         __le16 rt_channel;
 278         __le16 rt_chbitmask;
 279 } __packed;
 280
 281 struct hwsim_radiotap_ack_hdr {
 282         struct ieee80211_radiotap_header hdr;
 283         u8 rt_flags;
 284         u8 pad;
 285         __le16 rt_channel;
 286         __le16 rt_chbitmask;
 287 } __packed;
 288
 289 /* MAC80211_HWSIM netlinf family */
 290 static struct genl_family hwsim_genl_family = {
 291         .id = GENL_ID_GENERATE,
 292         .hdrsize = 0,
 293         .name = "MAC80211_HWSIM",
 294         .version = 1,
 295         .maxattr = HWSIM_ATTR_MAX,
 296 };
 297
 298 /* MAC80211_HWSIM netlink policy */
 299
 300 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 301         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 302         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 303         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 304                                .len = IEEE80211_MAX_DATA_LEN },
 305         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 306         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 307         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 308         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 309                                  .len = IEEE80211_TX_MAX_RATES *
 310                                         sizeof(struct hwsim_tx_rate)},
 311         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 312 };
 313
 314 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 315                                         struct net_device *dev)
 316 {
 317         /* TODO: allow packet injection */
 318         dev_kfree_skb(skb);
 319         return NETDEV_TX_OK;
 320 }
 321
 322 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 323 {
 324         return ktime_to_us(ktime_get_real());
 325 }
 326
 327 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 328 {
 329         u64 now = mac80211_hwsim_get_tsf_raw();
 330         return cpu_to_le64(now + data->tsf_offset);
 331 }
 332
 333 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 334                                   struct ieee80211_vif *vif)
 335 {
 336         struct mac80211_hwsim_data *data = hw->priv;
 337         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 338 }
 339
 340 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 341                 struct ieee80211_vif *vif, u64 tsf)
 342 {
 343         struct mac80211_hwsim_data *data = hw->priv;
 344         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 345         u32 bcn_int = data->beacon_int;
 346         s64 delta = tsf - now;
 347
 348         data->tsf_offset += delta;
 349         /* adjust after beaconing with new timestamp at old TBTT */
 350         data->bcn_delta = do_div(delta, bcn_int);
 351 }
 352
 353 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 354                                       struct sk_buff *tx_skb,
 355                                       struct ieee80211_channel *chan)
 356 {
 357         struct mac80211_hwsim_data *data = hw->priv;
 358         struct sk_buff *skb;
 359         struct hwsim_radiotap_hdr *hdr;
 360         u16 flags;
 361         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 362         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 363
 364         if (!netif_running(hwsim_mon))
 365                 return;
 366
 367         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 368         if (skb == NULL)
 369                 return;
 370
 371         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 372         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 373         hdr->hdr.it_pad = 0;
 374         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 375         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 376                                           (1 << IEEE80211_RADIOTAP_RATE) |
 377                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 378                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 379         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 380         hdr->rt_flags = 0;
 381         hdr->rt_rate = txrate->bitrate / 5;
 382         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 383         flags = IEEE80211_CHAN_2GHZ;
 384         if (txrate->flags & IEEE80211_RATE_ERP_G)
 385                 flags |= IEEE80211_CHAN_OFDM;
 386         else
 387                 flags |= IEEE80211_CHAN_CCK;
 388         hdr->rt_chbitmask = cpu_to_le16(flags);
 389
 390         skb->dev = hwsim_mon;
 391         skb_set_mac_header(skb, 0);
 392         skb->ip_summed = CHECKSUM_UNNECESSARY;
 393         skb->pkt_type = PACKET_OTHERHOST;
 394         skb->protocol = htons(ETH_P_802_2);
 395         memset(skb->cb, 0, sizeof(skb->cb));
 396         netif_rx(skb);
 397 }
 398
 399
 400 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 401                                        const u8 *addr)
 402 {
 403         struct sk_buff *skb;
 404         struct hwsim_radiotap_ack_hdr *hdr;
 405         u16 flags;
 406         struct ieee80211_hdr *hdr11;
 407
 408         if (!netif_running(hwsim_mon))
 409                 return;
 410
 411         skb = dev_alloc_skb(100);
 412         if (skb == NULL)
 413                 return;
 414
 415         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 416         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 417         hdr->hdr.it_pad = 0;
 418         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 419         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 420                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 421         hdr->rt_flags = 0;
 422         hdr->pad = 0;
 423         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 424         flags = IEEE80211_CHAN_2GHZ;
 425         hdr->rt_chbitmask = cpu_to_le16(flags);
 426
 427         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 428         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 429                                            IEEE80211_STYPE_ACK);
 430         hdr11->duration_id = cpu_to_le16(0);
 431         memcpy(hdr11->addr1, addr, ETH_ALEN);
 432
 433         skb->dev = hwsim_mon;
 434         skb_set_mac_header(skb, 0);
 435         skb->ip_summed = CHECKSUM_UNNECESSARY;
 436         skb->pkt_type = PACKET_OTHERHOST;
 437         skb->protocol = htons(ETH_P_802_2);
 438         memset(skb->cb, 0, sizeof(skb->cb));
 439         netif_rx(skb);
 440 }
 441
 442
 443 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 444                            struct sk_buff *skb)
 445 {
 446         switch (data->ps) {
 447         case PS_DISABLED:
 448                 return true;
 449         case PS_ENABLED:
 450                 return false;
 451         case PS_AUTO_POLL:
 452                 /* TODO: accept (some) Beacons by default and other frames only
 453                  * if pending PS-Poll has been sent */
 454                 return true;
 455         case PS_MANUAL_POLL:
 456                 /* Allow unicast frames to own address if there is a pending
 457                  * PS-Poll */
 458                 if (data->ps_poll_pending &&
 459                     memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 460                            ETH_ALEN) == 0) {
 461                         data->ps_poll_pending = false;
 462                         return true;
 463                 }
 464                 return false;
 465         }
 466
 467         return true;
 468 }
 469
 470
 471 struct mac80211_hwsim_addr_match_data {
 472         bool ret;
 473         const u8 *addr;
 474 };
 475
 476 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 477                                      struct ieee80211_vif *vif)
 478 {
 479         struct mac80211_hwsim_addr_match_data *md = data;
 480         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 481                 md->ret = true;
 482 }
 483
 484
 485 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 486                                       const u8 *addr)
 487 {
 488         struct mac80211_hwsim_addr_match_data md;
 489
 490         if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 491                 return true;
 492
 493         md.ret = false;
 494         md.addr = addr;
 495         ieee80211_iterate_active_interfaces_atomic(data->hw,
 496                                                    IEEE80211_IFACE_ITER_NORMAL,
 497                                                    mac80211_hwsim_addr_iter,
 498                                                    &md);
 499
 500         return md.ret;
 501 }
 502
 503 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 504                                        struct sk_buff *my_skb,
 505                                        int dst_portid)
 506 {
 507         struct sk_buff *skb;
 508         struct mac80211_hwsim_data *data = hw->priv;
 509         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 510         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 511         void *msg_head;
 512         unsigned int hwsim_flags = 0;
 513         int i;
 514         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 515
 516         if (data->ps != PS_DISABLED)
 517                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 518         /* If the queue contains MAX_QUEUE skb's drop some */
 519         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 520                 /* Droping until WARN_QUEUE level */
 521                 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 522                         skb_dequeue(&data->pending);
 523         }
 524
 525         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 526         if (skb == NULL)
 527                 goto nla_put_failure;
 528
 529         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 530                                HWSIM_CMD_FRAME);
 531         if (msg_head == NULL) {
 532                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 533                 goto nla_put_failure;
 534         }
 535
 536         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 537                     ETH_ALEN, data->addresses[1].addr))
 538                 goto nla_put_failure;
 539
 540         /* We get the skb->data */
 541         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 542                 goto nla_put_failure;
 543
 544         /* We get the flags for this transmission, and we translate them to
 545            wmediumd flags  */
 546
 547         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 548                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 549
 550         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 551                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 552
 553         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 554                 goto nla_put_failure;
 555
 556         /* We get the tx control (rate and retries) info*/
 557
 558         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 559                 tx_attempts[i].idx = info->status.rates[i].idx;
 560                 tx_attempts[i].count = info->status.rates[i].count;
 561         }
 562
 563         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 564                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 565                     tx_attempts))
 566                 goto nla_put_failure;
 567
 568         /* We create a cookie to identify this skb */
 569         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 570                 goto nla_put_failure;
 571
 572         genlmsg_end(skb, msg_head);
 573         genlmsg_unicast(&init_net, skb, dst_portid);
 574
 575         /* Enqueue the packet */
 576         skb_queue_tail(&data->pending, my_skb);
 577         return;
 578
 579 nla_put_failure:
 580         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 581 }
 582
 583 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 584                                struct ieee80211_channel *c2)
 585 {
 586         if (!c1 || !c2)
 587                 return false;
 588
 589         return c1->center_freq == c2->center_freq;
 590 }
 591
 592 struct tx_iter_data {
 593         struct ieee80211_channel *channel;
 594         bool receive;
 595 };
 596
 597 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 598                                    struct ieee80211_vif *vif)
 599 {
 600         struct tx_iter_data *data = _data;
 601
 602         if (!vif->chanctx_conf)
 603                 return;
 604
 605         if (!hwsim_chans_compat(data->channel,
 606                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 607                 return;
 608
 609         data->receive = true;
 610 }
 611
 612 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 613                                           struct sk_buff *skb,
 614                                           struct ieee80211_channel *chan)
 615 {
 616         struct mac80211_hwsim_data *data = hw->priv, *data2;
 617         bool ack = false;
 618         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 619         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 620         struct ieee80211_rx_status rx_status;
 621         u64 now;
 622
 623         memset(&rx_status, 0, sizeof(rx_status));
 624         rx_status.flag |= RX_FLAG_MACTIME_START;
 625         rx_status.freq = chan->center_freq;
 626         rx_status.band = chan->band;
 627         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 628                 rx_status.rate_idx =
 629                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
 630                 rx_status.vht_nss =
 631                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
 632                 rx_status.flag |= RX_FLAG_VHT;
 633         } else {
 634                 rx_status.rate_idx = info->control.rates[0].idx;
 635                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 636                         rx_status.flag |= RX_FLAG_HT;
 637         }
 638         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 639                 rx_status.flag |= RX_FLAG_40MHZ;
 640         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 641                 rx_status.flag |= RX_FLAG_SHORT_GI;
 642         /* TODO: simulate real signal strength (and optional packet loss) */
 643         rx_status.signal = data->power_level - 50;
 644
 645         if (data->ps != PS_DISABLED)
 646                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 647
 648         /* release the skb's source info */
 649         skb_orphan(skb);
 650         skb_dst_drop(skb);
 651         skb->mark = 0;
 652         secpath_reset(skb);
 653         nf_reset(skb);
 654
 655         /*
 656          * Get absolute mactime here so all HWs RX at the "same time", and
 657          * absolute TX time for beacon mactime so the timestamp matches.
 658          * Giving beacons a different mactime than non-beacons looks messy, but
 659          * it helps the Toffset be exact and a ~10us mactime discrepancy
 660          * probably doesn't really matter.
 661          */
 662         if (ieee80211_is_beacon(hdr->frame_control) ||
 663             ieee80211_is_probe_resp(hdr->frame_control))
 664                 now = data->abs_bcn_ts;
 665         else
 666                 now = mac80211_hwsim_get_tsf_raw();
 667
 668         /* Copy skb to all enabled radios that are on the current frequency */
 669         spin_lock(&hwsim_radio_lock);
 670         list_for_each_entry(data2, &hwsim_radios, list) {
 671                 struct sk_buff *nskb;
 672                 struct tx_iter_data tx_iter_data = {
 673                         .receive = false,
 674                         .channel = chan,
 675                 };
 676
 677                 if (data == data2)
 678                         continue;
 679
 680                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 681                     !hwsim_ps_rx_ok(data2, skb))
 682                         continue;
 683
 684                 if (!(data->group & data2->group))
 685                         continue;
 686
 687                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 688                     !hwsim_chans_compat(chan, data2->channel)) {
 689                         ieee80211_iterate_active_interfaces_atomic(
 690                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 691                                 mac80211_hwsim_tx_iter, &tx_iter_data);
 692                         if (!tx_iter_data.receive)
 693                                 continue;
 694                 }
 695
 696                 /*
 697                  * reserve some space for our vendor and the normal
 698                  * radiotap header, since we're copying anyway
 699                  */
 700                 if (skb->len < PAGE_SIZE && paged_rx) {
 701                         struct page *page = alloc_page(GFP_ATOMIC);
 702
 703                         if (!page)
 704                                 continue;
 705
 706                         nskb = dev_alloc_skb(128);
 707                         if (!nskb) {
 708                                 __free_page(page);
 709                                 continue;
 710                         }
 711
 712                         memcpy(page_address(page), skb->data, skb->len);
 713                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 714                 } else {
 715                         nskb = skb_copy(skb, GFP_ATOMIC);
 716                         if (!nskb)
 717                                 continue;
 718                 }
 719
 720                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 721                         ack = true;
 722
 723                 rx_status.mactime = now + data2->tsf_offset;
 724 #if 0
 725                 /*
 726                  * Don't enable this code by default as the OUI 00:00:00
 727                  * is registered to Xerox so we shouldn't use it here, it
 728                  * might find its way into pcap files.
 729                  * Note that this code requires the headroom in the SKB
 730                  * that was allocated earlier.
 731                  */
 732                 rx_status.vendor_radiotap_oui[0] = 0x00;
 733                 rx_status.vendor_radiotap_oui[1] = 0x00;
 734                 rx_status.vendor_radiotap_oui[2] = 0x00;
 735                 rx_status.vendor_radiotap_subns = 127;
 736                 /*
 737                  * Radiotap vendor namespaces can (and should) also be
 738                  * split into fields by using the standard radiotap
 739                  * presence bitmap mechanism. Use just BIT(0) here for
 740                  * the presence bitmap.
 741                  */
 742                 rx_status.vendor_radiotap_bitmap = BIT(0);
 743                 /* We have 8 bytes of (dummy) data */
 744                 rx_status.vendor_radiotap_len = 8;
 745                 /* For testing, also require it to be aligned */
 746                 rx_status.vendor_radiotap_align = 8;
 747                 /* push the data */
 748                 memcpy(skb_push(nskb, 8), "ABCDEFGH", 8);
 749 #endif
 750
 751                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 752                 ieee80211_rx_irqsafe(data2->hw, nskb);
 753         }
 754         spin_unlock(&hwsim_radio_lock);
 755
 756         return ack;
 757 }
 758
 759 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 760                               struct ieee80211_tx_control *control,
 761                               struct sk_buff *skb)
 762 {
 763         struct mac80211_hwsim_data *data = hw->priv;
 764         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 765         struct ieee80211_chanctx_conf *chanctx_conf;
 766         struct ieee80211_channel *channel;
 767         bool ack;
 768         u32 _portid;
 769
 770         if (WARN_ON(skb->len < 10)) {
 771                 /* Should not happen; just a sanity check for addr1 use */
 772                 ieee80211_free_txskb(hw, skb);
 773                 return;
 774         }
 775
 776         if (data->channels == 1) {
 777                 channel = data->channel;
 778         } else if (txi->hw_queue == 4) {
 779                 channel = data->tmp_chan;
 780         } else {
 781                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
 782                 if (chanctx_conf)
 783                         channel = chanctx_conf->def.chan;
 784                 else
 785                         channel = NULL;
 786         }
 787
 788         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 789                 ieee80211_free_txskb(hw, skb);
 790                 return;
 791         }
 792
 793         if (data->idle && !data->tmp_chan) {
 794                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 795                 ieee80211_free_txskb(hw, skb);
 796                 return;
 797         }
 798
 799         if (txi->control.vif)
 800                 hwsim_check_magic(txi->control.vif);
 801         if (control->sta)
 802                 hwsim_check_sta_magic(control->sta);
 803
 804         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
 805                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
 806                                        txi->control.rates,
 807                                        ARRAY_SIZE(txi->control.rates));
 808
 809         txi->rate_driver_data[0] = channel;
 810         mac80211_hwsim_monitor_rx(hw, skb, channel);
 811
 812         /* wmediumd mode check */
 813         _portid = ACCESS_ONCE(wmediumd_portid);
 814
 815         if (_portid)
 816                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
 817
 818         /* NO wmediumd detected, perfect medium simulation */
 819         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
 820
 821         if (ack && skb->len >= 16) {
 822                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 823                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
 824         }
 825
 826         ieee80211_tx_info_clear_status(txi);
 827
 828         /* frame was transmitted at most favorable rate at first attempt */
 829         txi->control.rates[0].count = 1;
 830         txi->control.rates[1].idx = -1;
 831
 832         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 833                 txi->flags |= IEEE80211_TX_STAT_ACK;
 834         ieee80211_tx_status_irqsafe(hw, skb);
 835 }
 836
 837
 838 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 839 {
 840         struct mac80211_hwsim_data *data = hw->priv;
 841         wiphy_debug(hw->wiphy, "%s\n", __func__);
 842         data->started = true;
 843         return 0;
 844 }
 845
 846
 847 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 848 {
 849         struct mac80211_hwsim_data *data = hw->priv;
 850         data->started = false;
 851         tasklet_hrtimer_cancel(&data->beacon_timer);
 852         wiphy_debug(hw->wiphy, "%s\n", __func__);
 853 }
 854
 855
 856 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 857                                         struct ieee80211_vif *vif)
 858 {
 859         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 860                     __func__, ieee80211_vif_type_p2p(vif),
 861                     vif->addr);
 862         hwsim_set_magic(vif);
 863
 864         vif->cab_queue = 0;
 865         vif->hw_queue[IEEE80211_AC_VO] = 0;
 866         vif->hw_queue[IEEE80211_AC_VI] = 1;
 867         vif->hw_queue[IEEE80211_AC_BE] = 2;
 868         vif->hw_queue[IEEE80211_AC_BK] = 3;
 869
 870         return 0;
 871 }
 872
 873
 874 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 875                                            struct ieee80211_vif *vif,
 876                                            enum nl80211_iftype newtype,
 877                                            bool newp2p)
 878 {
 879         newtype = ieee80211_iftype_p2p(newtype, newp2p);
 880         wiphy_debug(hw->wiphy,
 881                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 882                     __func__, ieee80211_vif_type_p2p(vif),
 883                     newtype, vif->addr);
 884         hwsim_check_magic(vif);
 885
 886         /*
 887          * interface may change from non-AP to AP in
 888          * which case this needs to be set up again
 889          */
 890         vif->cab_queue = 0;
 891
 892         return 0;
 893 }
 894
 895 static void mac80211_hwsim_remove_interface(
 896         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 897 {
 898         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 899                     __func__, ieee80211_vif_type_p2p(vif),
 900                     vif->addr);
 901         hwsim_check_magic(vif);
 902         hwsim_clear_magic(vif);
 903 }
 904
 905 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 906                                     struct sk_buff *skb,
 907                                     struct ieee80211_channel *chan)
 908 {
 909         u32 _pid = ACCESS_ONCE(wmediumd_portid);
 910
 911         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
 912                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 913                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
 914                                        txi->control.rates,
 915                                        ARRAY_SIZE(txi->control.rates));
 916         }
 917
 918         mac80211_hwsim_monitor_rx(hw, skb, chan);
 919
 920         if (_pid)
 921                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 922
 923         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
 924         dev_kfree_skb(skb);
 925 }
 926
 927 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 928                                      struct ieee80211_vif *vif)
 929 {
 930         struct mac80211_hwsim_data *data = arg;
 931         struct ieee80211_hw *hw = data->hw;
 932         struct ieee80211_tx_info *info;
 933         struct ieee80211_rate *txrate;
 934         struct ieee80211_mgmt *mgmt;
 935         struct sk_buff *skb;
 936
 937         hwsim_check_magic(vif);
 938
 939         if (vif->type != NL80211_IFTYPE_AP &&
 940             vif->type != NL80211_IFTYPE_MESH_POINT &&
 941             vif->type != NL80211_IFTYPE_ADHOC)
 942                 return;
 943
 944         skb = ieee80211_beacon_get(hw, vif);
 945         if (skb == NULL)
 946                 return;
 947         info = IEEE80211_SKB_CB(skb);
 948         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
 949                 ieee80211_get_tx_rates(vif, NULL, skb,
 950                                        info->control.rates,
 951                                        ARRAY_SIZE(info->control.rates));
 952
 953         txrate = ieee80211_get_tx_rate(hw, info);
 954
 955         mgmt = (struct ieee80211_mgmt *) skb->data;
 956         /* fake header transmission time */
 957         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
 958         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
 959                                                data->tsf_offset +
 960                                                24 * 8 * 10 / txrate->bitrate);
 961
 962         mac80211_hwsim_tx_frame(hw, skb,
 963                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 964 }
 965
 966 static enum hrtimer_restart
 967 mac80211_hwsim_beacon(struct hrtimer *timer)
 968 {
 969         struct mac80211_hwsim_data *data =
 970                 container_of(timer, struct mac80211_hwsim_data,
 971                              beacon_timer.timer);
 972         struct ieee80211_hw *hw = data->hw;
 973         u64 bcn_int = data->beacon_int;
 974         ktime_t next_bcn;
 975
 976         if (!data->started)
 977                 goto out;
 978
 979         ieee80211_iterate_active_interfaces_atomic(
 980                 hw, IEEE80211_IFACE_ITER_NORMAL,
 981                 mac80211_hwsim_beacon_tx, data);
 982
 983         /* beacon at new TBTT + beacon interval */
 984         if (data->bcn_delta) {
 985                 bcn_int -= data->bcn_delta;
 986                 data->bcn_delta = 0;
 987         }
 988
 989         next_bcn = ktime_add(hrtimer_get_expires(timer),
 990                              ns_to_ktime(bcn_int * 1000));
 991         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
 992 out:
 993         return HRTIMER_NORESTART;
 994 }
 995
 996 static const char * const hwsim_chanwidths[] = {
 997         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
 998         [NL80211_CHAN_WIDTH_20] = "ht20",
 999         [NL80211_CHAN_WIDTH_40] = "ht40",
1000         [NL80211_CHAN_WIDTH_80] = "vht80",
1001         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1002         [NL80211_CHAN_WIDTH_160] = "vht160",
1003 };
1004
1005 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1006 {
1007         struct mac80211_hwsim_data *data = hw->priv;
1008         struct ieee80211_conf *conf = &hw->conf;
1009         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1010                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1011                 [IEEE80211_SMPS_OFF] = "off",
1012                 [IEEE80211_SMPS_STATIC] = "static",
1013                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1014         };
1015
1016         if (conf->chandef.chan)
1017                 wiphy_debug(hw->wiphy,
1018                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1019                             __func__,
1020                             conf->chandef.chan->center_freq,
1021                             conf->chandef.center_freq1,
1022                             conf->chandef.center_freq2,
1023                             hwsim_chanwidths[conf->chandef.width],
1024                             !!(conf->flags & IEEE80211_CONF_IDLE),
1025                             !!(conf->flags & IEEE80211_CONF_PS),
1026                             smps_modes[conf->smps_mode]);
1027         else
1028                 wiphy_debug(hw->wiphy,
1029                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1030                             __func__,
1031                             !!(conf->flags & IEEE80211_CONF_IDLE),
1032                             !!(conf->flags & IEEE80211_CONF_PS),
1033                             smps_modes[conf->smps_mode]);
1034
1035         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1036
1037         data->channel = conf->chandef.chan;
1038
1039         WARN_ON(data->channel && data->channels > 1);
1040
1041         data->power_level = conf->power_level;
1042         if (!data->started || !data->beacon_int)
1043                 tasklet_hrtimer_cancel(&data->beacon_timer);
1044         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1045                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1046                 u32 bcn_int = data->beacon_int;
1047                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1048
1049                 tasklet_hrtimer_start(&data->beacon_timer,
1050                                       ns_to_ktime(until_tbtt * 1000),
1051                                       HRTIMER_MODE_REL);
1052         }
1053
1054         return 0;
1055 }
1056
1057
1058 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1059                                             unsigned int changed_flags,
1060                                             unsigned int *total_flags,u64 multicast)
1061 {
1062         struct mac80211_hwsim_data *data = hw->priv;
1063
1064         wiphy_debug(hw->wiphy, "%s\n", __func__);
1065
1066         data->rx_filter = 0;
1067         if (*total_flags & FIF_PROMISC_IN_BSS)
1068                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1069         if (*total_flags & FIF_ALLMULTI)
1070                 data->rx_filter |= FIF_ALLMULTI;
1071
1072         *total_flags = data->rx_filter;
1073 }
1074
1075 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1076                                        struct ieee80211_vif *vif)
1077 {
1078         unsigned int *count = data;
1079         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1080
1081         if (vp->bcn_en)
1082                 (*count)++;
1083 }
1084
1085 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1086                                             struct ieee80211_vif *vif,
1087                                             struct ieee80211_bss_conf *info,
1088                                             u32 changed)
1089 {
1090         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1091         struct mac80211_hwsim_data *data = hw->priv;
1092
1093         hwsim_check_magic(vif);
1094
1095         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1096                     __func__, changed, vif->addr);
1097
1098         if (changed & BSS_CHANGED_BSSID) {
1099                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1100                             __func__, info->bssid);
1101                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1102         }
1103
1104         if (changed & BSS_CHANGED_ASSOC) {
1105                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1106                             info->assoc, info->aid);
1107                 vp->assoc = info->assoc;
1108                 vp->aid = info->aid;
1109         }
1110
1111         if (changed & BSS_CHANGED_BEACON_INT) {
1112                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1113                 data->beacon_int = info->beacon_int * 1024;
1114         }
1115
1116         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1117                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1118                 vp->bcn_en = info->enable_beacon;
1119                 if (data->started &&
1120                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1121                     info->enable_beacon) {
1122                         u64 tsf, until_tbtt;
1123                         u32 bcn_int;
1124                         if (WARN_ON(!data->beacon_int))
1125                                 data->beacon_int = 1000 * 1024;
1126                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1127                         bcn_int = data->beacon_int;
1128                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1129                         tasklet_hrtimer_start(&data->beacon_timer,
1130                                               ns_to_ktime(until_tbtt * 1000),
1131                                               HRTIMER_MODE_REL);
1132                 } else if (!info->enable_beacon) {
1133                         unsigned int count = 0;
1134                         ieee80211_iterate_active_interfaces_atomic(
1135                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1136                                 mac80211_hwsim_bcn_en_iter, &count);
1137                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1138                                     count);
1139                         if (count == 0)
1140                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1141                 }
1142         }
1143
1144         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1145                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1146                             info->use_cts_prot);
1147         }
1148
1149         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1150                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1151                             info->use_short_preamble);
1152         }
1153
1154         if (changed & BSS_CHANGED_ERP_SLOT) {
1155                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1156         }
1157
1158         if (changed & BSS_CHANGED_HT) {
1159                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1160                             info->ht_operation_mode);
1161         }
1162
1163         if (changed & BSS_CHANGED_BASIC_RATES) {
1164                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1165                             (unsigned long long) info->basic_rates);
1166         }
1167
1168         if (changed & BSS_CHANGED_TXPOWER)
1169                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1170 }
1171
1172 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1173                                   struct ieee80211_vif *vif,
1174                                   struct ieee80211_sta *sta)
1175 {
1176         hwsim_check_magic(vif);
1177         hwsim_set_sta_magic(sta);
1178
1179         return 0;
1180 }
1181
1182 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1183                                      struct ieee80211_vif *vif,
1184                                      struct ieee80211_sta *sta)
1185 {
1186         hwsim_check_magic(vif);
1187         hwsim_clear_sta_magic(sta);
1188
1189         return 0;
1190 }
1191
1192 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1193                                       struct ieee80211_vif *vif,
1194                                       enum sta_notify_cmd cmd,
1195                                       struct ieee80211_sta *sta)
1196 {
1197         hwsim_check_magic(vif);
1198
1199         switch (cmd) {
1200         case STA_NOTIFY_SLEEP:
1201         case STA_NOTIFY_AWAKE:
1202                 /* TODO: make good use of these flags */
1203                 break;
1204         default:
1205                 WARN(1, "Invalid sta notify: %d\n", cmd);
1206                 break;
1207         }
1208 }
1209
1210 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1211                                   struct ieee80211_sta *sta,
1212                                   bool set)
1213 {
1214         hwsim_check_sta_magic(sta);
1215         return 0;
1216 }
1217
1218 static int mac80211_hwsim_conf_tx(
1219         struct ieee80211_hw *hw,
1220         struct ieee80211_vif *vif, u16 queue,
1221         const struct ieee80211_tx_queue_params *params)
1222 {
1223         wiphy_debug(hw->wiphy,
1224                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1225                     __func__, queue,
1226                     params->txop, params->cw_min,
1227                     params->cw_max, params->aifs);
1228         return 0;
1229 }
1230
1231 static int mac80211_hwsim_get_survey(
1232         struct ieee80211_hw *hw, int idx,
1233         struct survey_info *survey)
1234 {
1235         struct ieee80211_conf *conf = &hw->conf;
1236
1237         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1238
1239         if (idx != 0)
1240                 return -ENOENT;
1241
1242         /* Current channel */
1243         survey->channel = conf->chandef.chan;
1244
1245         /*
1246          * Magically conjured noise level --- this is only ok for simulated hardware.
1247          *
1248          * A real driver which cannot determine the real channel noise MUST NOT
1249          * report any noise, especially not a magically conjured one :-)
1250          */
1251         survey->filled = SURVEY_INFO_NOISE_DBM;
1252         survey->noise = -92;
1253
1254         return 0;
1255 }
1256
1257 #ifdef CONFIG_NL80211_TESTMODE
1258 /*
1259  * This section contains example code for using netlink
1260  * attributes with the testmode command in nl80211.
1261  */
1262
1263 /* These enums need to be kept in sync with userspace */
1264 enum hwsim_testmode_attr {
1265         __HWSIM_TM_ATTR_INVALID = 0,
1266         HWSIM_TM_ATTR_CMD       = 1,
1267         HWSIM_TM_ATTR_PS        = 2,
1268
1269         /* keep last */
1270         __HWSIM_TM_ATTR_AFTER_LAST,
1271         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1272 };
1273
1274 enum hwsim_testmode_cmd {
1275         HWSIM_TM_CMD_SET_PS             = 0,
1276         HWSIM_TM_CMD_GET_PS             = 1,
1277         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1278         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1279 };
1280
1281 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1282         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1283         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1284 };
1285
1286 static int hwsim_fops_ps_write(void *dat, u64 val);
1287
1288 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1289                                        struct ieee80211_vif *vif,
1290                                        void *data, int len)
1291 {
1292         struct mac80211_hwsim_data *hwsim = hw->priv;
1293         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1294         struct sk_buff *skb;
1295         int err, ps;
1296
1297         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1298                         hwsim_testmode_policy);
1299         if (err)
1300                 return err;
1301
1302         if (!tb[HWSIM_TM_ATTR_CMD])
1303                 return -EINVAL;
1304
1305         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1306         case HWSIM_TM_CMD_SET_PS:
1307                 if (!tb[HWSIM_TM_ATTR_PS])
1308                         return -EINVAL;
1309                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1310                 return hwsim_fops_ps_write(hwsim, ps);
1311         case HWSIM_TM_CMD_GET_PS:
1312                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1313                                                 nla_total_size(sizeof(u32)));
1314                 if (!skb)
1315                         return -ENOMEM;
1316                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1317                         goto nla_put_failure;
1318                 return cfg80211_testmode_reply(skb);
1319         case HWSIM_TM_CMD_STOP_QUEUES:
1320                 ieee80211_stop_queues(hw);
1321                 return 0;
1322         case HWSIM_TM_CMD_WAKE_QUEUES:
1323                 ieee80211_wake_queues(hw);
1324                 return 0;
1325         default:
1326                 return -EOPNOTSUPP;
1327         }
1328
1329  nla_put_failure:
1330         kfree_skb(skb);
1331         return -ENOBUFS;
1332 }
1333 #endif
1334
1335 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1336                                        struct ieee80211_vif *vif,
1337                                        enum ieee80211_ampdu_mlme_action action,
1338                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1339                                        u8 buf_size)
1340 {
1341         switch (action) {
1342         case IEEE80211_AMPDU_TX_START:
1343                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1344                 break;
1345         case IEEE80211_AMPDU_TX_STOP_CONT:
1346         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1347         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1348                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1349                 break;
1350         case IEEE80211_AMPDU_TX_OPERATIONAL:
1351                 break;
1352         case IEEE80211_AMPDU_RX_START:
1353         case IEEE80211_AMPDU_RX_STOP:
1354                 break;
1355         default:
1356                 return -EOPNOTSUPP;
1357         }
1358
1359         return 0;
1360 }
1361
1362 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1363 {
1364         /* Not implemented, queues only on kernel side */
1365 }
1366
1367 static void hw_scan_work(struct work_struct *work)
1368 {
1369         struct mac80211_hwsim_data *hwsim =
1370                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1371         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1372         int dwell, i;
1373
1374         mutex_lock(&hwsim->mutex);
1375         if (hwsim->scan_chan_idx >= req->n_channels) {
1376                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1377                 ieee80211_scan_completed(hwsim->hw, false);
1378                 hwsim->hw_scan_request = NULL;
1379                 hwsim->hw_scan_vif = NULL;
1380                 hwsim->tmp_chan = NULL;
1381                 mutex_unlock(&hwsim->mutex);
1382                 return;
1383         }
1384
1385         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1386                     req->channels[hwsim->scan_chan_idx]->center_freq);
1387
1388         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1389         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1390             !req->n_ssids) {
1391                 dwell = 120;
1392         } else {
1393                 dwell = 30;
1394                 /* send probes */
1395                 for (i = 0; i < req->n_ssids; i++) {
1396                         struct sk_buff *probe;
1397
1398                         probe = ieee80211_probereq_get(hwsim->hw,
1399                                                        hwsim->hw_scan_vif,
1400                                                        req->ssids[i].ssid,
1401                                                        req->ssids[i].ssid_len,
1402                                                        req->ie_len);
1403                         if (!probe)
1404                                 continue;
1405
1406                         if (req->ie_len)
1407                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1408                                        req->ie_len);
1409
1410                         local_bh_disable();
1411                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1412                                                 hwsim->tmp_chan);
1413                         local_bh_enable();
1414                 }
1415         }
1416         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1417                                      msecs_to_jiffies(dwell));
1418         hwsim->scan_chan_idx++;
1419         mutex_unlock(&hwsim->mutex);
1420 }
1421
1422 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1423                                   struct ieee80211_vif *vif,
1424                                   struct cfg80211_scan_request *req)
1425 {
1426         struct mac80211_hwsim_data *hwsim = hw->priv;
1427
1428         mutex_lock(&hwsim->mutex);
1429         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1430                 mutex_unlock(&hwsim->mutex);
1431                 return -EBUSY;
1432         }
1433         hwsim->hw_scan_request = req;
1434         hwsim->hw_scan_vif = vif;
1435         hwsim->scan_chan_idx = 0;
1436         mutex_unlock(&hwsim->mutex);
1437
1438         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1439
1440         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1441
1442         return 0;
1443 }
1444
1445 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1446                                           struct ieee80211_vif *vif)
1447 {
1448         struct mac80211_hwsim_data *hwsim = hw->priv;
1449
1450         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1451
1452         cancel_delayed_work_sync(&hwsim->hw_scan);
1453
1454         mutex_lock(&hwsim->mutex);
1455         ieee80211_scan_completed(hwsim->hw, true);
1456         hwsim->tmp_chan = NULL;
1457         hwsim->hw_scan_request = NULL;
1458         hwsim->hw_scan_vif = NULL;
1459         mutex_unlock(&hwsim->mutex);
1460 }
1461
1462 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1463 {
1464         struct mac80211_hwsim_data *hwsim = hw->priv;
1465
1466         mutex_lock(&hwsim->mutex);
1467
1468         if (hwsim->scanning) {
1469                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1470                 goto out;
1471         }
1472
1473         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1474         hwsim->scanning = true;
1475
1476 out:
1477         mutex_unlock(&hwsim->mutex);
1478 }
1479
1480 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1481 {
1482         struct mac80211_hwsim_data *hwsim = hw->priv;
1483
1484         mutex_lock(&hwsim->mutex);
1485
1486         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1487         hwsim->scanning = false;
1488
1489         mutex_unlock(&hwsim->mutex);
1490 }
1491
1492 static void hw_roc_done(struct work_struct *work)
1493 {
1494         struct mac80211_hwsim_data *hwsim =
1495                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1496
1497         mutex_lock(&hwsim->mutex);
1498         ieee80211_remain_on_channel_expired(hwsim->hw);
1499         hwsim->tmp_chan = NULL;
1500         mutex_unlock(&hwsim->mutex);
1501
1502         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1503 }
1504
1505 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1506                               struct ieee80211_vif *vif,
1507                               struct ieee80211_channel *chan,
1508                               int duration,
1509                               enum ieee80211_roc_type type)
1510 {
1511         struct mac80211_hwsim_data *hwsim = hw->priv;
1512
1513         mutex_lock(&hwsim->mutex);
1514         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1515                 mutex_unlock(&hwsim->mutex);
1516                 return -EBUSY;
1517         }
1518
1519         hwsim->tmp_chan = chan;
1520         mutex_unlock(&hwsim->mutex);
1521
1522         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1523                     chan->center_freq, duration);
1524
1525         ieee80211_ready_on_channel(hw);
1526
1527         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1528                                      msecs_to_jiffies(duration));
1529         return 0;
1530 }
1531
1532 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1533 {
1534         struct mac80211_hwsim_data *hwsim = hw->priv;
1535
1536         cancel_delayed_work_sync(&hwsim->roc_done);
1537
1538         mutex_lock(&hwsim->mutex);
1539         hwsim->tmp_chan = NULL;
1540         mutex_unlock(&hwsim->mutex);
1541
1542         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1543
1544         return 0;
1545 }
1546
1547 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1548                                       struct ieee80211_chanctx_conf *ctx)
1549 {
1550         hwsim_set_chanctx_magic(ctx);
1551         wiphy_debug(hw->wiphy,
1552                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1553                     ctx->def.chan->center_freq, ctx->def.width,
1554                     ctx->def.center_freq1, ctx->def.center_freq2);
1555         return 0;
1556 }
1557
1558 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1559                                           struct ieee80211_chanctx_conf *ctx)
1560 {
1561         wiphy_debug(hw->wiphy,
1562                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1563                     ctx->def.chan->center_freq, ctx->def.width,
1564                     ctx->def.center_freq1, ctx->def.center_freq2);
1565         hwsim_check_chanctx_magic(ctx);
1566         hwsim_clear_chanctx_magic(ctx);
1567 }
1568
1569 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1570                                           struct ieee80211_chanctx_conf *ctx,
1571                                           u32 changed)
1572 {
1573         hwsim_check_chanctx_magic(ctx);
1574         wiphy_debug(hw->wiphy,
1575                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1576                     ctx->def.chan->center_freq, ctx->def.width,
1577                     ctx->def.center_freq1, ctx->def.center_freq2);
1578 }
1579
1580 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
1581                                              struct ieee80211_vif *vif,
1582                                              struct ieee80211_chanctx_conf *ctx)
1583 {
1584         hwsim_check_magic(vif);
1585         hwsim_check_chanctx_magic(ctx);
1586
1587         return 0;
1588 }
1589
1590 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
1591                                                 struct ieee80211_vif *vif,
1592                                                 struct ieee80211_chanctx_conf *ctx)
1593 {
1594         hwsim_check_magic(vif);
1595         hwsim_check_chanctx_magic(ctx);
1596 }
1597
1598 static const struct ieee80211_ops mac80211_hwsim_ops = {
1599         .tx = mac80211_hwsim_tx,
1600         .start = mac80211_hwsim_start,
1601         .stop = mac80211_hwsim_stop,
1602         .add_interface = mac80211_hwsim_add_interface,
1603         .change_interface = mac80211_hwsim_change_interface,
1604         .remove_interface = mac80211_hwsim_remove_interface,
1605         .config = mac80211_hwsim_config,
1606         .configure_filter = mac80211_hwsim_configure_filter,
1607         .bss_info_changed = mac80211_hwsim_bss_info_changed,
1608         .sta_add = mac80211_hwsim_sta_add,
1609         .sta_remove = mac80211_hwsim_sta_remove,
1610         .sta_notify = mac80211_hwsim_sta_notify,
1611         .set_tim = mac80211_hwsim_set_tim,
1612         .conf_tx = mac80211_hwsim_conf_tx,
1613         .get_survey = mac80211_hwsim_get_survey,
1614         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1615         .ampdu_action = mac80211_hwsim_ampdu_action,
1616         .sw_scan_start = mac80211_hwsim_sw_scan,
1617         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1618         .flush = mac80211_hwsim_flush,
1619         .get_tsf = mac80211_hwsim_get_tsf,
1620         .set_tsf = mac80211_hwsim_set_tsf,
1621 };
1622
1623 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
1624
1625 static void mac80211_hwsim_destroy_radio(struct mac80211_hwsim_data *data)
1626 {
1627         debugfs_remove_recursive(data->debugfs);
1628         ieee80211_unregister_hw(data->hw);
1629         device_release_driver(data->dev);
1630         device_unregister(data->dev);
1631         ieee80211_free_hw(data->hw);
1632 }
1633
1634 static void mac80211_hwsim_free(void)
1635 {
1636         struct mac80211_hwsim_data *data;
1637
1638         spin_lock_bh(&hwsim_radio_lock);
1639         while ((data = list_first_entry_or_null(&hwsim_radios,
1640                                                 struct mac80211_hwsim_data,
1641                                                 list))) {
1642                 list_del(&data->list);
1643                 spin_unlock_bh(&hwsim_radio_lock);
1644                 mac80211_hwsim_destroy_radio(data);
1645                 spin_lock_bh(&hwsim_radio_lock);
1646         }
1647         spin_unlock_bh(&hwsim_radio_lock);
1648         class_destroy(hwsim_class);
1649 }
1650
1651 static struct platform_driver mac80211_hwsim_driver = {
1652         .driver = {
1653                 .name = "mac80211_hwsim",
1654                 .owner = THIS_MODULE,
1655         },
1656 };
1657
1658 static const struct net_device_ops hwsim_netdev_ops = {
1659         .ndo_start_xmit         = hwsim_mon_xmit,
1660         .ndo_change_mtu         = eth_change_mtu,
1661         .ndo_set_mac_address    = eth_mac_addr,
1662         .ndo_validate_addr      = eth_validate_addr,
1663 };
1664
1665 static void hwsim_mon_setup(struct net_device *dev)
1666 {
1667         dev->netdev_ops = &hwsim_netdev_ops;
1668         dev->destructor = free_netdev;
1669         ether_setup(dev);
1670         dev->tx_queue_len = 0;
1671         dev->type = ARPHRD_IEEE80211_RADIOTAP;
1672         memset(dev->dev_addr, 0, ETH_ALEN);
1673         dev->dev_addr[0] = 0x12;
1674 }
1675
1676
1677 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1678 {
1679         struct mac80211_hwsim_data *data = dat;
1680         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1681         struct sk_buff *skb;
1682         struct ieee80211_pspoll *pspoll;
1683
1684         if (!vp->assoc)
1685                 return;
1686
1687         wiphy_debug(data->hw->wiphy,
1688                     "%s: send PS-Poll to %pM for aid %d\n",
1689                     __func__, vp->bssid, vp->aid);
1690
1691         skb = dev_alloc_skb(sizeof(*pspoll));
1692         if (!skb)
1693                 return;
1694         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1695         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1696                                             IEEE80211_STYPE_PSPOLL |
1697                                             IEEE80211_FCTL_PM);
1698         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1699         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1700         memcpy(pspoll->ta, mac, ETH_ALEN);
1701
1702         rcu_read_lock();
1703         mac80211_hwsim_tx_frame(data->hw, skb,
1704                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1705         rcu_read_unlock();
1706 }
1707
1708 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1709                                 struct ieee80211_vif *vif, int ps)
1710 {
1711         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1712         struct sk_buff *skb;
1713         struct ieee80211_hdr *hdr;
1714
1715         if (!vp->assoc)
1716                 return;
1717
1718         wiphy_debug(data->hw->wiphy,
1719                     "%s: send data::nullfunc to %pM ps=%d\n",
1720                     __func__, vp->bssid, ps);
1721
1722         skb = dev_alloc_skb(sizeof(*hdr));
1723         if (!skb)
1724                 return;
1725         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1726         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1727                                          IEEE80211_STYPE_NULLFUNC |
1728                                          (ps ? IEEE80211_FCTL_PM : 0));
1729         hdr->duration_id = cpu_to_le16(0);
1730         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1731         memcpy(hdr->addr2, mac, ETH_ALEN);
1732         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1733
1734         rcu_read_lock();
1735         mac80211_hwsim_tx_frame(data->hw, skb,
1736                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1737         rcu_read_unlock();
1738 }
1739
1740
1741 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1742                                    struct ieee80211_vif *vif)
1743 {
1744         struct mac80211_hwsim_data *data = dat;
1745         hwsim_send_nullfunc(data, mac, vif, 1);
1746 }
1747
1748
1749 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1750                                       struct ieee80211_vif *vif)
1751 {
1752         struct mac80211_hwsim_data *data = dat;
1753         hwsim_send_nullfunc(data, mac, vif, 0);
1754 }
1755
1756
1757 static int hwsim_fops_ps_read(void *dat, u64 *val)
1758 {
1759         struct mac80211_hwsim_data *data = dat;
1760         *val = data->ps;
1761         return 0;
1762 }
1763
1764 static int hwsim_fops_ps_write(void *dat, u64 val)
1765 {
1766         struct mac80211_hwsim_data *data = dat;
1767         enum ps_mode old_ps;
1768
1769         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1770             val != PS_MANUAL_POLL)
1771                 return -EINVAL;
1772
1773         old_ps = data->ps;
1774         data->ps = val;
1775
1776         if (val == PS_MANUAL_POLL) {
1777                 ieee80211_iterate_active_interfaces(data->hw,
1778                                                     IEEE80211_IFACE_ITER_NORMAL,
1779                                                     hwsim_send_ps_poll, data);
1780                 data->ps_poll_pending = true;
1781         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1782                 ieee80211_iterate_active_interfaces(data->hw,
1783                                                     IEEE80211_IFACE_ITER_NORMAL,
1784                                                     hwsim_send_nullfunc_ps,
1785                                                     data);
1786         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1787                 ieee80211_iterate_active_interfaces(data->hw,
1788                                                     IEEE80211_IFACE_ITER_NORMAL,
1789                                                     hwsim_send_nullfunc_no_ps,
1790                                                     data);
1791         }
1792
1793         return 0;
1794 }
1795
1796 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1797                         "%llu\n");
1798
1799 static int hwsim_write_simulate_radar(void *dat, u64 val)
1800 {
1801         struct mac80211_hwsim_data *data = dat;
1802
1803         ieee80211_radar_detected(data->hw);
1804
1805         return 0;
1806 }
1807
1808 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
1809                         hwsim_write_simulate_radar, "%llu\n");
1810
1811 static int hwsim_fops_group_read(void *dat, u64 *val)
1812 {
1813         struct mac80211_hwsim_data *data = dat;
1814         *val = data->group;
1815         return 0;
1816 }
1817
1818 static int hwsim_fops_group_write(void *dat, u64 val)
1819 {
1820         struct mac80211_hwsim_data *data = dat;
1821         data->group = val;
1822         return 0;
1823 }
1824
1825 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1826                         hwsim_fops_group_read, hwsim_fops_group_write,
1827                         "%llx\n");
1828
1829 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
1830 {
1831         struct mac80211_hwsim_data *data;
1832         bool _found = false;
1833
1834         spin_lock_bh(&hwsim_radio_lock);
1835         list_for_each_entry(data, &hwsim_radios, list) {
1836                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
1837                         _found = true;
1838                         break;
1839                 }
1840         }
1841         spin_unlock_bh(&hwsim_radio_lock);
1842
1843         if (!_found)
1844                 return NULL;
1845
1846         return data;
1847 }
1848
1849 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1850                                            struct genl_info *info)
1851 {
1852
1853         struct ieee80211_hdr *hdr;
1854         struct mac80211_hwsim_data *data2;
1855         struct ieee80211_tx_info *txi;
1856         struct hwsim_tx_rate *tx_attempts;
1857         unsigned long ret_skb_ptr;
1858         struct sk_buff *skb, *tmp;
1859         const u8 *src;
1860         unsigned int hwsim_flags;
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 = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1871         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1872         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1873
1874         data2 = get_hwsim_data_ref_from_addr(src);
1875         if (!data2)
1876                 goto out;
1877
1878         /* look for the skb matching the cookie passed back from user */
1879         skb_queue_walk_safe(&data2->pending, skb, tmp) {
1880                 if ((unsigned long)skb == ret_skb_ptr) {
1881                         skb_unlink(skb, &data2->pending);
1882                         found = true;
1883                         break;
1884                 }
1885         }
1886
1887         /* not found */
1888         if (!found)
1889                 goto out;
1890
1891         /* Tx info received because the frame was broadcasted on user space,
1892          so we get all the necessary info: tx attempts and skb control buff */
1893
1894         tx_attempts = (struct hwsim_tx_rate *)nla_data(
1895                        info->attrs[HWSIM_ATTR_TX_INFO]);
1896
1897         /* now send back TX status */
1898         txi = IEEE80211_SKB_CB(skb);
1899
1900         ieee80211_tx_info_clear_status(txi);
1901
1902         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1903                 txi->status.rates[i].idx = tx_attempts[i].idx;
1904                 txi->status.rates[i].count = tx_attempts[i].count;
1905                 /*txi->status.rates[i].flags = 0;*/
1906         }
1907
1908         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1909
1910         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1911            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1912                 if (skb->len >= 16) {
1913                         hdr = (struct ieee80211_hdr *) skb->data;
1914                         mac80211_hwsim_monitor_ack(txi->rate_driver_data[0],
1915                                                    hdr->addr2);
1916                 }
1917                 txi->flags |= IEEE80211_TX_STAT_ACK;
1918         }
1919         ieee80211_tx_status_irqsafe(data2->hw, skb);
1920         return 0;
1921 out:
1922         return -EINVAL;
1923
1924 }
1925
1926 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1927                                           struct genl_info *info)
1928 {
1929
1930         struct mac80211_hwsim_data *data2;
1931         struct ieee80211_rx_status rx_status;
1932         const u8 *dst;
1933         int frame_data_len;
1934         void *frame_data;
1935         struct sk_buff *skb = NULL;
1936
1937         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1938             !info->attrs[HWSIM_ATTR_FRAME] ||
1939             !info->attrs[HWSIM_ATTR_RX_RATE] ||
1940             !info->attrs[HWSIM_ATTR_SIGNAL])
1941                 goto out;
1942
1943         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1944         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1945         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1946
1947         /* Allocate new skb here */
1948         skb = alloc_skb(frame_data_len, GFP_KERNEL);
1949         if (skb == NULL)
1950                 goto err;
1951
1952         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
1953                 goto err;
1954
1955         /* Copy the data */
1956         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
1957
1958         data2 = get_hwsim_data_ref_from_addr(dst);
1959         if (!data2)
1960                 goto out;
1961
1962         /* check if radio is configured properly */
1963
1964         if (data2->idle || !data2->started)
1965                 goto out;
1966
1967         /* A frame is received from user space */
1968         memset(&rx_status, 0, sizeof(rx_status));
1969         rx_status.freq = data2->channel->center_freq;
1970         rx_status.band = data2->channel->band;
1971         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1972         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1973
1974         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1975         ieee80211_rx_irqsafe(data2->hw, skb);
1976
1977         return 0;
1978 err:
1979         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1980         goto out;
1981 out:
1982         dev_kfree_skb(skb);
1983         return -EINVAL;
1984 }
1985
1986 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1987                                       struct genl_info *info)
1988 {
1989         wmediumd_portid = info->snd_portid;
1990
1991         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1992                "switching to wmediumd mode with pid %d\n", info->snd_portid);
1993
1994         return 0;
1995 }
1996
1997 /* Generic Netlink operations array */
1998 static const struct genl_ops hwsim_ops[] = {
1999         {
2000                 .cmd = HWSIM_CMD_REGISTER,
2001                 .policy = hwsim_genl_policy,
2002                 .doit = hwsim_register_received_nl,
2003                 .flags = GENL_ADMIN_PERM,
2004         },
2005         {
2006                 .cmd = HWSIM_CMD_FRAME,
2007                 .policy = hwsim_genl_policy,
2008                 .doit = hwsim_cloned_frame_received_nl,
2009         },
2010         {
2011                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2012                 .policy = hwsim_genl_policy,
2013                 .doit = hwsim_tx_info_frame_received_nl,
2014         },
2015 };
2016
2017 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
2018                                          unsigned long state,
2019                                          void *_notify)
2020 {
2021         struct netlink_notify *notify = _notify;
2022
2023         if (state != NETLINK_URELEASE)
2024                 return NOTIFY_DONE;
2025
2026         if (notify->portid == wmediumd_portid) {
2027                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
2028                        " socket, switching to perfect channel medium\n");
2029                 wmediumd_portid = 0;
2030         }
2031         return NOTIFY_DONE;
2032
2033 }
2034
2035 static struct notifier_block hwsim_netlink_notifier = {
2036         .notifier_call = mac80211_hwsim_netlink_notify,
2037 };
2038
2039 static int hwsim_init_netlink(void)
2040 {
2041         int rc;
2042
2043         /* userspace test API hasn't been adjusted for multi-channel */
2044         if (channels > 1)
2045                 return 0;
2046
2047         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
2048
2049         rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
2050         if (rc)
2051                 goto failure;
2052
2053         rc = netlink_register_notifier(&hwsim_netlink_notifier);
2054         if (rc)
2055                 goto failure;
2056
2057         return 0;
2058
2059 failure:
2060         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2061         return -EINVAL;
2062 }
2063
2064 static void hwsim_exit_netlink(void)
2065 {
2066         /* userspace test API hasn't been adjusted for multi-channel */
2067         if (channels > 1)
2068                 return;
2069
2070         /* unregister the notifier */
2071         netlink_unregister_notifier(&hwsim_netlink_notifier);
2072         /* unregister the family */
2073         genl_unregister_family(&hwsim_genl_family);
2074 }
2075
2076 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
2077         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
2078         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
2079                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
2080 #ifdef CONFIG_MAC80211_MESH
2081                                  BIT(NL80211_IFTYPE_MESH_POINT) |
2082 #endif
2083                                  BIT(NL80211_IFTYPE_AP) |
2084                                  BIT(NL80211_IFTYPE_P2P_GO) },
2085         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) },
2086 };
2087
2088 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
2089         { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
2090 };
2091
2092 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
2093         {
2094                 .limits = hwsim_if_limits,
2095                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
2096                 .max_interfaces = 2048,
2097                 .num_different_channels = 1,
2098         },
2099         {
2100                 .limits = hwsim_if_dfs_limits,
2101                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
2102                 .max_interfaces = 8,
2103                 .num_different_channels = 1,
2104                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2105                                        BIT(NL80211_CHAN_WIDTH_20) |
2106                                        BIT(NL80211_CHAN_WIDTH_40) |
2107                                        BIT(NL80211_CHAN_WIDTH_80) |
2108                                        BIT(NL80211_CHAN_WIDTH_160),
2109         }
2110 };
2111
2112 static int __init mac80211_hwsim_create_radio(void)
2113 {
2114         int err;
2115         u8 addr[ETH_ALEN];
2116         struct mac80211_hwsim_data *data;
2117         struct ieee80211_hw *hw;
2118         enum ieee80211_band band;
2119         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2120         int idx;
2121
2122         spin_lock_bh(&hwsim_radio_lock);
2123         idx = hwsim_radio_idx++;
2124         spin_unlock_bh(&hwsim_radio_lock);
2125
2126         if (channels > 1)
2127                 ops = &mac80211_hwsim_mchan_ops;
2128         hw = ieee80211_alloc_hw(sizeof(*data), ops);
2129         if (!hw) {
2130                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2131                 err = -ENOMEM;
2132                 goto failed;
2133         }
2134         data = hw->priv;
2135         data->hw = hw;
2136
2137         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2138         if (IS_ERR(data->dev)) {
2139                 printk(KERN_DEBUG
2140                        "mac80211_hwsim: device_create failed (%ld)\n",
2141                        PTR_ERR(data->dev));
2142                 err = -ENOMEM;
2143                 goto failed_drvdata;
2144         }
2145         data->dev->driver = &mac80211_hwsim_driver.driver;
2146         err = device_bind_driver(data->dev);
2147         if (err != 0) {
2148                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2149                        err);
2150                 goto failed_hw;
2151         }
2152
2153         skb_queue_head_init(&data->pending);
2154
2155         SET_IEEE80211_DEV(hw, data->dev);
2156         memset(addr, 0, ETH_ALEN);
2157         addr[0] = 0x02;
2158         addr[3] = idx >> 8;
2159         addr[4] = idx;
2160         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2161         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2162         data->addresses[1].addr[0] |= 0x40;
2163         hw->wiphy->n_addresses = 2;
2164         hw->wiphy->addresses = data->addresses;
2165
2166         data->channels = channels;
2167
2168         if (data->channels > 1) {
2169                 hw->wiphy->max_scan_ssids = 255;
2170                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2171                 hw->wiphy->max_remain_on_channel_duration = 1000;
2172                 /* For channels > 1 DFS is not allowed */
2173                 hw->wiphy->n_iface_combinations = 1;
2174                 hw->wiphy->iface_combinations = &data->if_combination;
2175                 data->if_combination = hwsim_if_comb[0];
2176                 data->if_combination.num_different_channels = data->channels;
2177         } else {
2178                 hw->wiphy->iface_combinations = hwsim_if_comb;
2179                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2180         }
2181
2182         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2183         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2184
2185         hw->queues = 5;
2186         hw->offchannel_tx_hw_queue = 4;
2187         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2188                                      BIT(NL80211_IFTYPE_AP) |
2189                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2190                                      BIT(NL80211_IFTYPE_P2P_GO) |
2191                                      BIT(NL80211_IFTYPE_ADHOC) |
2192                                      BIT(NL80211_IFTYPE_MESH_POINT) |
2193                                      BIT(NL80211_IFTYPE_P2P_DEVICE);
2194
2195         hw->flags = IEEE80211_HW_MFP_CAPABLE |
2196                     IEEE80211_HW_SIGNAL_DBM |
2197                     IEEE80211_HW_SUPPORTS_STATIC_SMPS |
2198                     IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2199                     IEEE80211_HW_AMPDU_AGGREGATION |
2200                     IEEE80211_HW_WANT_MONITOR_VIF |
2201                     IEEE80211_HW_QUEUE_CONTROL |
2202                     IEEE80211_HW_SUPPORTS_HT_CCK_RATES;
2203         if (rctbl)
2204                 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2205
2206         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2207                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2208                             WIPHY_FLAG_AP_UAPSD;
2209         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
2210
2211         /* ask mac80211 to reserve space for magic */
2212         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2213         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2214         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2215
2216         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2217                 sizeof(hwsim_channels_2ghz));
2218         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2219                 sizeof(hwsim_channels_5ghz));
2220         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2221
2222         for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2223                 struct ieee80211_supported_band *sband = &data->bands[band];
2224                 switch (band) {
2225                 case IEEE80211_BAND_2GHZ:
2226                         sband->channels = data->channels_2ghz;
2227                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2228                         sband->bitrates = data->rates;
2229                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2230                         break;
2231                 case IEEE80211_BAND_5GHZ:
2232                         sband->channels = data->channels_5ghz;
2233                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2234                         sband->bitrates = data->rates + 4;
2235                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2236                         break;
2237                 default:
2238                         continue;
2239                 }
2240
2241                 sband->ht_cap.ht_supported = true;
2242                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2243                                     IEEE80211_HT_CAP_GRN_FLD |
2244                                     IEEE80211_HT_CAP_SGI_40 |
2245                                     IEEE80211_HT_CAP_DSSSCCK40;
2246                 sband->ht_cap.ampdu_factor = 0x3;
2247                 sband->ht_cap.ampdu_density = 0x6;
2248                 memset(&sband->ht_cap.mcs, 0,
2249                        sizeof(sband->ht_cap.mcs));
2250                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2251                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2252                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2253
2254                 hw->wiphy->bands[band] = sband;
2255
2256                 sband->vht_cap.vht_supported = true;
2257                 sband->vht_cap.cap =
2258                         IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2259                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2260                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2261                         IEEE80211_VHT_CAP_RXLDPC |
2262                         IEEE80211_VHT_CAP_SHORT_GI_80 |
2263                         IEEE80211_VHT_CAP_SHORT_GI_160 |
2264                         IEEE80211_VHT_CAP_TXSTBC |
2265                         IEEE80211_VHT_CAP_RXSTBC_1 |
2266                         IEEE80211_VHT_CAP_RXSTBC_2 |
2267                         IEEE80211_VHT_CAP_RXSTBC_3 |
2268                         IEEE80211_VHT_CAP_RXSTBC_4 |
2269                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2270                 sband->vht_cap.vht_mcs.rx_mcs_map =
2271                         cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2272                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2273                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2274                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2275                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2276                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2277                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2278                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2279                 sband->vht_cap.vht_mcs.tx_mcs_map =
2280                         sband->vht_cap.vht_mcs.rx_mcs_map;
2281         }
2282
2283         /* By default all radios belong to the first group */
2284         data->group = 1;
2285         mutex_init(&data->mutex);
2286
2287         /* Enable frame retransmissions for lossy channels */
2288         hw->max_rates = 4;
2289         hw->max_rate_tries = 11;
2290
2291         err = ieee80211_register_hw(hw);
2292         if (err < 0) {
2293                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2294                        err);
2295                 goto failed_hw;
2296         }
2297
2298         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2299
2300         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2301         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2302         debugfs_create_file("group", 0666, data->debugfs, data,
2303                             &hwsim_fops_group);
2304         if (data->channels == 1)
2305                 debugfs_create_file("dfs_simulate_radar", 0222,
2306                                     data->debugfs,
2307                                     data, &hwsim_simulate_radar);
2308
2309         tasklet_hrtimer_init(&data->beacon_timer,
2310                              mac80211_hwsim_beacon,
2311                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2312
2313         spin_lock_bh(&hwsim_radio_lock);
2314         list_add_tail(&data->list, &hwsim_radios);
2315         spin_unlock_bh(&hwsim_radio_lock);
2316
2317         return 0;
2318
2319 failed_hw:
2320         device_unregister(data->dev);
2321 failed_drvdata:
2322         ieee80211_free_hw(hw);
2323 failed:
2324         return err;
2325 }
2326
2327 static int __init init_mac80211_hwsim(void)
2328 {
2329         int i, err;
2330
2331         if (radios < 1 || radios > 100)
2332                 return -EINVAL;
2333
2334         if (channels < 1)
2335                 return -EINVAL;
2336
2337         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
2338         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
2339         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
2340         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
2341         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
2342         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
2343         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
2344         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
2345         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
2346         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
2347         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
2348                 mac80211_hwsim_assign_vif_chanctx;
2349         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
2350                 mac80211_hwsim_unassign_vif_chanctx;
2351
2352         spin_lock_init(&hwsim_radio_lock);
2353         INIT_LIST_HEAD(&hwsim_radios);
2354
2355         err = platform_driver_register(&mac80211_hwsim_driver);
2356         if (err)
2357                 return err;
2358
2359         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
2360         if (IS_ERR(hwsim_class)) {
2361                 err = PTR_ERR(hwsim_class);
2362                 goto out_unregister_driver;
2363         }
2364
2365         for (i = 0; i < radios; i++) {
2366                 err = mac80211_hwsim_create_radio();
2367                 if (err)
2368                         goto out_free_radios;
2369         }
2370
2371         hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
2372         if (hwsim_mon == NULL) {
2373                 err = -ENOMEM;
2374                 goto out_free_radios;
2375         }
2376
2377         rtnl_lock();
2378         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
2379         if (err < 0) {
2380                 rtnl_unlock();
2381                 goto out_free_radios;
2382         }
2383
2384         err = register_netdevice(hwsim_mon);
2385         if (err < 0) {
2386                 rtnl_unlock();
2387                 goto out_free_mon;
2388         }
2389         rtnl_unlock();
2390
2391         err = hwsim_init_netlink();
2392         if (err < 0)
2393                 goto out_free_mon;
2394
2395         return 0;
2396
2397 out_free_mon:
2398         free_netdev(hwsim_mon);
2399 out_free_radios:
2400         mac80211_hwsim_free();
2401 out_unregister_driver:
2402         platform_driver_unregister(&mac80211_hwsim_driver);
2403         return err;
2404 }
2405 module_init(init_mac80211_hwsim);
2406
2407 static void __exit exit_mac80211_hwsim(void)
2408 {
2409         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2410
2411         hwsim_exit_netlink();
2412
2413         mac80211_hwsim_free();
2414         unregister_netdev(hwsim_mon);
2415         platform_driver_unregister(&mac80211_hwsim_driver);
2416 }
2417 module_exit(exit_mac80211_hwsim);