drivers/net/wireless/ath/wil6210/cfg80211.c

   1 /*
   2  * Copyright (c) 2012 Qualcomm Atheros, Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/netdevice.h>
  19 #include <linux/sched.h>
  20 #include <linux/etherdevice.h>
  21 #include <linux/wireless.h>
  22 #include <linux/ieee80211.h>
  23 #include <linux/slab.h>
  24 #include <linux/version.h>
  25 #include <net/cfg80211.h>
  26
  27 #include "wil6210.h"
  28 #include "wmi.h"
  29
  30 #define CHAN60G(_channel, _flags) {                             \
  31         .band                   = IEEE80211_BAND_60GHZ,         \
  32         .center_freq            = 56160 + (2160 * (_channel)),  \
  33         .hw_value               = (_channel),                   \
  34         .flags                  = (_flags),                     \
  35         .max_antenna_gain       = 0,                            \
  36         .max_power              = 40,                           \
  37 }
  38
  39 static struct ieee80211_channel wil_60ghz_channels[] = {
  40         CHAN60G(1, 0),
  41         CHAN60G(2, 0),
  42         CHAN60G(3, 0),
  43 /* channel 4 not supported yet */
  44 };
  45
  46 static struct ieee80211_supported_band wil_band_60ghz = {
  47         .channels = wil_60ghz_channels,
  48         .n_channels = ARRAY_SIZE(wil_60ghz_channels),
  49         .ht_cap = {
  50                 .ht_supported = true,
  51                 .cap = 0, /* TODO */
  52                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, /* TODO */
  53                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_8, /* TODO */
  54                 .mcs = {
  55                                 /* MCS 1..12 - SC PHY */
  56                         .rx_mask = {0xfe, 0x1f}, /* 1..12 */
  57                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED, /* TODO */
  58                 },
  59         },
  60 };
  61
  62 static const struct ieee80211_txrx_stypes
  63 wil_mgmt_stypes[NUM_NL80211_IFTYPES] = {
  64         [NL80211_IFTYPE_STATION] = {
  65                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  66                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
  67                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  68                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
  69         },
  70         [NL80211_IFTYPE_AP] = {
  71                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  72                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
  73                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  74                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
  75         },
  76         [NL80211_IFTYPE_P2P_CLIENT] = {
  77                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  78                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
  79                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  80                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
  81         },
  82         [NL80211_IFTYPE_P2P_GO] = {
  83                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  84                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
  85                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  86                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
  87         },
  88 };
  89
  90 static const u32 wil_cipher_suites[] = {
  91         WLAN_CIPHER_SUITE_GCMP,
  92 };
  93
  94 int wil_iftype_nl2wmi(enum nl80211_iftype type)
  95 {
  96         static const struct {
  97                 enum nl80211_iftype nl;
  98                 enum wmi_network_type wmi;
  99         } __nl2wmi[] = {
 100                 {NL80211_IFTYPE_ADHOC,          WMI_NETTYPE_ADHOC},
 101                 {NL80211_IFTYPE_STATION,        WMI_NETTYPE_INFRA},
 102                 {NL80211_IFTYPE_AP,             WMI_NETTYPE_AP},
 103                 {NL80211_IFTYPE_P2P_CLIENT,     WMI_NETTYPE_P2P},
 104                 {NL80211_IFTYPE_P2P_GO,         WMI_NETTYPE_P2P},
 105                 {NL80211_IFTYPE_MONITOR,        WMI_NETTYPE_ADHOC}, /* FIXME */
 106         };
 107         uint i;
 108
 109         for (i = 0; i < ARRAY_SIZE(__nl2wmi); i++) {
 110                 if (__nl2wmi[i].nl == type)
 111                         return __nl2wmi[i].wmi;
 112         }
 113
 114         return -EOPNOTSUPP;
 115 }
 116
 117 static int wil_cfg80211_get_station(struct wiphy *wiphy,
 118                                     struct net_device *ndev,
 119                                     u8 *mac, struct station_info *sinfo)
 120 {
 121         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 122         int rc;
 123         struct wmi_notify_req_cmd cmd = {
 124                 .cid = 0,
 125                 .interval_usec = 0,
 126         };
 127
 128         if (memcmp(mac, wil->dst_addr[0], ETH_ALEN))
 129                 return -ENOENT;
 130
 131         /* WMI_NOTIFY_REQ_DONE_EVENTID handler fills wil->stats.bf_mcs */
 132         rc = wmi_call(wil, WMI_NOTIFY_REQ_CMDID, &cmd, sizeof(cmd),
 133                       WMI_NOTIFY_REQ_DONE_EVENTID, NULL, 0, 20);
 134         if (rc)
 135                 return rc;
 136
 137         sinfo->generation = wil->sinfo_gen;
 138
 139         sinfo->filled |= STATION_INFO_TX_BITRATE;
 140         sinfo->txrate.flags = RATE_INFO_FLAGS_MCS | RATE_INFO_FLAGS_60G;
 141         sinfo->txrate.mcs = wil->stats.bf_mcs;
 142         sinfo->filled |= STATION_INFO_RX_BITRATE;
 143         sinfo->rxrate.flags = RATE_INFO_FLAGS_MCS | RATE_INFO_FLAGS_60G;
 144         sinfo->rxrate.mcs = wil->stats.last_mcs_rx;
 145
 146         if (test_bit(wil_status_fwconnected, &wil->status)) {
 147                 sinfo->filled |= STATION_INFO_SIGNAL;
 148                 sinfo->signal = 12; /* TODO: provide real value */
 149         }
 150
 151         return 0;
 152 }
 153
 154 static int wil_cfg80211_change_iface(struct wiphy *wiphy,
 155                                      struct net_device *ndev,
 156                                      enum nl80211_iftype type, u32 *flags,
 157                                      struct vif_params *params)
 158 {
 159         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 160         struct wireless_dev *wdev = wil->wdev;
 161
 162         switch (type) {
 163         case NL80211_IFTYPE_STATION:
 164         case NL80211_IFTYPE_AP:
 165         case NL80211_IFTYPE_P2P_CLIENT:
 166         case NL80211_IFTYPE_P2P_GO:
 167                 break;
 168         case NL80211_IFTYPE_MONITOR:
 169                 if (flags)
 170                         wil->monitor_flags = *flags;
 171                 else
 172                         wil->monitor_flags = 0;
 173
 174                 break;
 175         default:
 176                 return -EOPNOTSUPP;
 177         }
 178
 179         wdev->iftype = type;
 180
 181         return 0;
 182 }
 183
 184 static int wil_cfg80211_scan(struct wiphy *wiphy,
 185                              struct cfg80211_scan_request *request)
 186 {
 187         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 188         struct wireless_dev *wdev = wil->wdev;
 189         struct {
 190                 struct wmi_start_scan_cmd cmd;
 191                 u16 chnl[4];
 192         } __packed cmd;
 193         uint i, n;
 194
 195         if (wil->scan_request) {
 196                 wil_err(wil, "Already scanning\n");
 197                 return -EAGAIN;
 198         }
 199
 200         /* check we are client side */
 201         switch (wdev->iftype) {
 202         case NL80211_IFTYPE_STATION:
 203         case NL80211_IFTYPE_P2P_CLIENT:
 204                 break;
 205         default:
 206                 return -EOPNOTSUPP;
 207         }
 208
 209         /* FW don't support scan after connection attempt */
 210         if (test_bit(wil_status_dontscan, &wil->status)) {
 211                 wil_err(wil, "Scan after connect attempt not supported\n");
 212                 return -EBUSY;
 213         }
 214
 215         wil->scan_request = request;
 216
 217         memset(&cmd, 0, sizeof(cmd));
 218         cmd.cmd.num_channels = 0;
 219         n = min(request->n_channels, 4U);
 220         for (i = 0; i < n; i++) {
 221                 int ch = request->channels[i]->hw_value;
 222                 if (ch == 0) {
 223                         wil_err(wil,
 224                                 "Scan requested for unknown frequency %dMhz\n",
 225                                 request->channels[i]->center_freq);
 226                         continue;
 227                 }
 228                 /* 0-based channel indexes */
 229                 cmd.cmd.channel_list[cmd.cmd.num_channels++].channel = ch - 1;
 230                 wil_dbg_misc(wil, "Scan for ch %d  : %d MHz\n", ch,
 231                              request->channels[i]->center_freq);
 232         }
 233
 234         return wmi_send(wil, WMI_START_SCAN_CMDID, &cmd, sizeof(cmd.cmd) +
 235                         cmd.cmd.num_channels * sizeof(cmd.cmd.channel_list[0]));
 236 }
 237
 238 static int wil_cfg80211_connect(struct wiphy *wiphy,
 239                                 struct net_device *ndev,
 240                                 struct cfg80211_connect_params *sme)
 241 {
 242         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 243         struct cfg80211_bss *bss;
 244         struct wmi_connect_cmd conn;
 245         const u8 *ssid_eid;
 246         const u8 *rsn_eid;
 247         int ch;
 248         int rc = 0;
 249
 250         bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
 251                                sme->ssid, sme->ssid_len,
 252                                WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 253         if (!bss) {
 254                 wil_err(wil, "Unable to find BSS\n");
 255                 return -ENOENT;
 256         }
 257
 258         ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
 259         if (!ssid_eid) {
 260                 wil_err(wil, "No SSID\n");
 261                 rc = -ENOENT;
 262                 goto out;
 263         }
 264
 265         rsn_eid = sme->ie ?
 266                         cfg80211_find_ie(WLAN_EID_RSN, sme->ie, sme->ie_len) :
 267                         NULL;
 268         if (rsn_eid) {
 269                 if (sme->ie_len > WMI_MAX_IE_LEN) {
 270                         rc = -ERANGE;
 271                         wil_err(wil, "IE too large (%td bytes)\n",
 272                                 sme->ie_len);
 273                         goto out;
 274                 }
 275                 /*
 276                  * For secure assoc, send:
 277                  * (1) WMI_DELETE_CIPHER_KEY_CMD
 278                  * (2) WMI_SET_APPIE_CMD
 279                  */
 280                 rc = wmi_del_cipher_key(wil, 0, bss->bssid);
 281                 if (rc) {
 282                         wil_err(wil, "WMI_DELETE_CIPHER_KEY_CMD failed\n");
 283                         goto out;
 284                 }
 285                 /* WMI_SET_APPIE_CMD */
 286                 rc = wmi_set_ie(wil, WMI_FRAME_ASSOC_REQ, sme->ie_len, sme->ie);
 287                 if (rc) {
 288                         wil_err(wil, "WMI_SET_APPIE_CMD failed\n");
 289                         goto out;
 290                 }
 291         }
 292
 293         /* WMI_CONNECT_CMD */
 294         memset(&conn, 0, sizeof(conn));
 295         switch (bss->capability & 0x03) {
 296         case WLAN_CAPABILITY_DMG_TYPE_AP:
 297                 conn.network_type = WMI_NETTYPE_INFRA;
 298                 break;
 299         case WLAN_CAPABILITY_DMG_TYPE_PBSS:
 300                 conn.network_type = WMI_NETTYPE_P2P;
 301                 break;
 302         default:
 303                 wil_err(wil, "Unsupported BSS type, capability= 0x%04x\n",
 304                         bss->capability);
 305                 goto out;
 306         }
 307         if (rsn_eid) {
 308                 conn.dot11_auth_mode = WMI_AUTH11_SHARED;
 309                 conn.auth_mode = WMI_AUTH_WPA2_PSK;
 310                 conn.pairwise_crypto_type = WMI_CRYPT_AES_GCMP;
 311                 conn.pairwise_crypto_len = 16;
 312         } else {
 313                 conn.dot11_auth_mode = WMI_AUTH11_OPEN;
 314                 conn.auth_mode = WMI_AUTH_NONE;
 315         }
 316
 317         conn.ssid_len = min_t(u8, ssid_eid[1], 32);
 318         memcpy(conn.ssid, ssid_eid+2, conn.ssid_len);
 319
 320         ch = bss->channel->hw_value;
 321         if (ch == 0) {
 322                 wil_err(wil, "BSS at unknown frequency %dMhz\n",
 323                         bss->channel->center_freq);
 324                 rc = -EOPNOTSUPP;
 325                 goto out;
 326         }
 327         conn.channel = ch - 1;
 328
 329         memcpy(conn.bssid, bss->bssid, 6);
 330         memcpy(conn.dst_mac, bss->bssid, 6);
 331         /*
 332          * FW don't support scan after connection attempt
 333          */
 334         set_bit(wil_status_dontscan, &wil->status);
 335
 336         rc = wmi_send(wil, WMI_CONNECT_CMDID, &conn, sizeof(conn));
 337         if (rc == 0) {
 338                 /* Connect can take lots of time */
 339                 mod_timer(&wil->connect_timer,
 340                           jiffies + msecs_to_jiffies(2000));
 341         }
 342
 343  out:
 344         cfg80211_put_bss(wiphy, bss);
 345
 346         return rc;
 347 }
 348
 349 static int wil_cfg80211_disconnect(struct wiphy *wiphy,
 350                                    struct net_device *ndev,
 351                                    u16 reason_code)
 352 {
 353         int rc;
 354         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 355
 356         rc = wmi_send(wil, WMI_DISCONNECT_CMDID, NULL, 0);
 357
 358         return rc;
 359 }
 360
 361 static int wil_cfg80211_set_channel(struct wiphy *wiphy,
 362                                     struct cfg80211_chan_def *chandef)
 363 {
 364         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 365         struct wireless_dev *wdev = wil->wdev;
 366
 367         wdev->preset_chandef = *chandef;
 368
 369         return 0;
 370 }
 371
 372 static int wil_cfg80211_add_key(struct wiphy *wiphy,
 373                                 struct net_device *ndev,
 374                                 u8 key_index, bool pairwise,
 375                                 const u8 *mac_addr,
 376                                 struct key_params *params)
 377 {
 378         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 379
 380         /* group key is not used */
 381         if (!pairwise)
 382                 return 0;
 383
 384         return wmi_add_cipher_key(wil, key_index, mac_addr,
 385                                   params->key_len, params->key);
 386 }
 387
 388 static int wil_cfg80211_del_key(struct wiphy *wiphy,
 389                                 struct net_device *ndev,
 390                                 u8 key_index, bool pairwise,
 391                                 const u8 *mac_addr)
 392 {
 393         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 394
 395         /* group key is not used */
 396         if (!pairwise)
 397                 return 0;
 398
 399         return wmi_del_cipher_key(wil, key_index, mac_addr);
 400 }
 401
 402 /* Need to be present or wiphy_new() will WARN */
 403 static int wil_cfg80211_set_default_key(struct wiphy *wiphy,
 404                                         struct net_device *ndev,
 405                                         u8 key_index, bool unicast,
 406                                         bool multicast)
 407 {
 408         return 0;
 409 }
 410
 411 static int wil_cfg80211_start_ap(struct wiphy *wiphy,
 412                                  struct net_device *ndev,
 413                                  struct cfg80211_ap_settings *info)
 414 {
 415         int rc = 0;
 416         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 417         struct wireless_dev *wdev = ndev->ieee80211_ptr;
 418         struct ieee80211_channel *channel = info->chandef.chan;
 419         struct cfg80211_beacon_data *bcon = &info->beacon;
 420         u8 wmi_nettype = wil_iftype_nl2wmi(wdev->iftype);
 421
 422         if (!channel) {
 423                 wil_err(wil, "AP: No channel???\n");
 424                 return -EINVAL;
 425         }
 426
 427         wil_dbg_misc(wil, "AP on Channel %d %d MHz, %s\n", channel->hw_value,
 428                      channel->center_freq, info->privacy ? "secure" : "open");
 429         print_hex_dump_bytes("SSID ", DUMP_PREFIX_OFFSET,
 430                              info->ssid, info->ssid_len);
 431
 432         rc = wil_reset(wil);
 433         if (rc)
 434                 return rc;
 435
 436         rc = wmi_set_ssid(wil, info->ssid_len, info->ssid);
 437         if (rc)
 438                 return rc;
 439
 440         rc = wmi_set_channel(wil, channel->hw_value);
 441         if (rc)
 442                 return rc;
 443
 444         /* MAC address - pre-requisite for other commands */
 445         wmi_set_mac_address(wil, ndev->dev_addr);
 446
 447         /* IE's */
 448         /* bcon 'head IE's are not relevant for 60g band */
 449         wmi_set_ie(wil, WMI_FRAME_BEACON, bcon->beacon_ies_len,
 450                    bcon->beacon_ies);
 451         wmi_set_ie(wil, WMI_FRAME_PROBE_RESP, bcon->proberesp_ies_len,
 452                    bcon->proberesp_ies);
 453         wmi_set_ie(wil, WMI_FRAME_ASSOC_RESP, bcon->assocresp_ies_len,
 454                    bcon->assocresp_ies);
 455
 456         wil->secure_pcp = info->privacy;
 457
 458         rc = wmi_set_bcon(wil, info->beacon_interval, wmi_nettype);
 459         if (rc)
 460                 return rc;
 461
 462         /* Rx VRING. After MAC and beacon */
 463         rc = wil_rx_init(wil);
 464
 465         netif_carrier_on(ndev);
 466
 467         return rc;
 468 }
 469
 470 static int wil_cfg80211_stop_ap(struct wiphy *wiphy,
 471                                 struct net_device *ndev)
 472 {
 473         int rc = 0;
 474         struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 475         struct wireless_dev *wdev = ndev->ieee80211_ptr;
 476         u8 wmi_nettype = wil_iftype_nl2wmi(wdev->iftype);
 477
 478         /* To stop beaconing, set BI to 0 */
 479         rc = wmi_set_bcon(wil, 0, wmi_nettype);
 480
 481         return rc;
 482 }
 483
 484 static struct cfg80211_ops wil_cfg80211_ops = {
 485         .scan = wil_cfg80211_scan,
 486         .connect = wil_cfg80211_connect,
 487         .disconnect = wil_cfg80211_disconnect,
 488         .change_virtual_intf = wil_cfg80211_change_iface,
 489         .get_station = wil_cfg80211_get_station,
 490         .set_monitor_channel = wil_cfg80211_set_channel,
 491         .add_key = wil_cfg80211_add_key,
 492         .del_key = wil_cfg80211_del_key,
 493         .set_default_key = wil_cfg80211_set_default_key,
 494         /* AP mode */
 495         .start_ap = wil_cfg80211_start_ap,
 496         .stop_ap = wil_cfg80211_stop_ap,
 497 };
 498
 499 static void wil_wiphy_init(struct wiphy *wiphy)
 500 {
 501         /* TODO: set real value */
 502         wiphy->max_scan_ssids = 10;
 503         wiphy->max_num_pmkids = 0 /* TODO: */;
 504         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 505                                  BIT(NL80211_IFTYPE_AP) |
 506                                  BIT(NL80211_IFTYPE_MONITOR);
 507         /* TODO: enable P2P when integrated with supplicant:
 508          * BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO)
 509          */
 510         wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
 511                         WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
 512         dev_warn(wiphy_dev(wiphy), "%s : flags = 0x%08x\n",
 513                  __func__, wiphy->flags);
 514         wiphy->probe_resp_offload =
 515                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
 516                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
 517                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
 518
 519         wiphy->bands[IEEE80211_BAND_60GHZ] = &wil_band_60ghz;
 520
 521         /* TODO: figure this out */
 522         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
 523
 524         wiphy->cipher_suites = wil_cipher_suites;
 525         wiphy->n_cipher_suites = ARRAY_SIZE(wil_cipher_suites);
 526         wiphy->mgmt_stypes = wil_mgmt_stypes;
 527 }
 528
 529 struct wireless_dev *wil_cfg80211_init(struct device *dev)
 530 {
 531         int rc = 0;
 532         struct wireless_dev *wdev;
 533
 534         wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
 535         if (!wdev)
 536                 return ERR_PTR(-ENOMEM);
 537
 538         wdev->wiphy = wiphy_new(&wil_cfg80211_ops,
 539                                 sizeof(struct wil6210_priv));
 540         if (!wdev->wiphy) {
 541                 rc = -ENOMEM;
 542                 goto out;
 543         }
 544
 545         set_wiphy_dev(wdev->wiphy, dev);
 546         wil_wiphy_init(wdev->wiphy);
 547
 548         rc = wiphy_register(wdev->wiphy);
 549         if (rc < 0)
 550                 goto out_failed_reg;
 551
 552         return wdev;
 553
 554 out_failed_reg:
 555         wiphy_free(wdev->wiphy);
 556 out:
 557         kfree(wdev);
 558
 559         return ERR_PTR(rc);
 560 }
 561
 562 void wil_wdev_free(struct wil6210_priv *wil)
 563 {
 564         struct wireless_dev *wdev = wil_to_wdev(wil);
 565
 566         if (!wdev)
 567                 return;
 568
 569         wiphy_unregister(wdev->wiphy);
 570         wiphy_free(wdev->wiphy);
 571         kfree(wdev);
 572 }