drivers/net/wireless/quantenna/qtnfmac/cfg80211.c

   1 /*
   2  * Copyright (c) 2012-2012 Quantenna Communications, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/vmalloc.h>
  20 #include <linux/ieee80211.h>
  21 #include <net/cfg80211.h>
  22 #include <net/netlink.h>
  23
  24 #include "cfg80211.h"
  25 #include "commands.h"
  26 #include "core.h"
  27 #include "util.h"
  28 #include "bus.h"
  29
  30 /* Supported rates to be advertised to the cfg80211 */
  31 static struct ieee80211_rate qtnf_rates_2g[] = {
  32         {.bitrate = 10, .hw_value = 2, },
  33         {.bitrate = 20, .hw_value = 4, },
  34         {.bitrate = 55, .hw_value = 11, },
  35         {.bitrate = 110, .hw_value = 22, },
  36         {.bitrate = 60, .hw_value = 12, },
  37         {.bitrate = 90, .hw_value = 18, },
  38         {.bitrate = 120, .hw_value = 24, },
  39         {.bitrate = 180, .hw_value = 36, },
  40         {.bitrate = 240, .hw_value = 48, },
  41         {.bitrate = 360, .hw_value = 72, },
  42         {.bitrate = 480, .hw_value = 96, },
  43         {.bitrate = 540, .hw_value = 108, },
  44 };
  45
  46 /* Supported rates to be advertised to the cfg80211 */
  47 static struct ieee80211_rate qtnf_rates_5g[] = {
  48         {.bitrate = 60, .hw_value = 12, },
  49         {.bitrate = 90, .hw_value = 18, },
  50         {.bitrate = 120, .hw_value = 24, },
  51         {.bitrate = 180, .hw_value = 36, },
  52         {.bitrate = 240, .hw_value = 48, },
  53         {.bitrate = 360, .hw_value = 72, },
  54         {.bitrate = 480, .hw_value = 96, },
  55         {.bitrate = 540, .hw_value = 108, },
  56 };
  57
  58 /* Supported crypto cipher suits to be advertised to cfg80211 */
  59 static const u32 qtnf_cipher_suites[] = {
  60         WLAN_CIPHER_SUITE_TKIP,
  61         WLAN_CIPHER_SUITE_CCMP,
  62         WLAN_CIPHER_SUITE_AES_CMAC,
  63 };
  64
  65 /* Supported mgmt frame types to be advertised to cfg80211 */
  66 static const struct ieee80211_txrx_stypes
  67 qtnf_mgmt_stypes[NUM_NL80211_IFTYPES] = {
  68         [NL80211_IFTYPE_STATION] = {
  69                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4),
  70                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  71                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
  72         },
  73         [NL80211_IFTYPE_AP] = {
  74                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4),
  75                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
  76                       BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
  77                       BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
  78                       BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
  79                       BIT(IEEE80211_STYPE_AUTH >> 4),
  80         },
  81 };
  82
  83 static int
  84 qtnf_validate_iface_combinations(struct wiphy *wiphy,
  85                                  struct qtnf_vif *change_vif,
  86                                  enum nl80211_iftype new_type)
  87 {
  88         struct qtnf_wmac *mac;
  89         struct qtnf_vif *vif;
  90         int i;
  91         int ret = 0;
  92         struct iface_combination_params params = {
  93                 .num_different_channels = 1,
  94         };
  95
  96         mac = wiphy_priv(wiphy);
  97         if (!mac)
  98                 return -EFAULT;
  99
 100         for (i = 0; i < QTNF_MAX_INTF; i++) {
 101                 vif = &mac->iflist[i];
 102                 if (vif->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
 103                         params.iftype_num[vif->wdev.iftype]++;
 104         }
 105
 106         if (change_vif) {
 107                 params.iftype_num[new_type]++;
 108                 params.iftype_num[change_vif->wdev.iftype]--;
 109         } else {
 110                 params.iftype_num[new_type]++;
 111         }
 112
 113         ret = cfg80211_check_combinations(wiphy, &params);
 114
 115         return ret;
 116 }
 117
 118 static int
 119 qtnf_change_virtual_intf(struct wiphy *wiphy,
 120                          struct net_device *dev,
 121                          enum nl80211_iftype type,
 122                          struct vif_params *params)
 123 {
 124         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 125         u8 *mac_addr;
 126         int ret;
 127
 128         ret = qtnf_validate_iface_combinations(wiphy, vif, type);
 129         if (ret) {
 130                 pr_err("VIF%u.%u combination check: failed to set type %d\n",
 131                        vif->mac->macid, vif->vifid, type);
 132                 return ret;
 133         }
 134
 135         if (params)
 136                 mac_addr = params->macaddr;
 137         else
 138                 mac_addr = NULL;
 139
 140         qtnf_scan_done(vif->mac, true);
 141
 142         ret = qtnf_cmd_send_change_intf_type(vif, type, mac_addr);
 143         if (ret) {
 144                 pr_err("VIF%u.%u: failed to change VIF type: %d\n",
 145                        vif->mac->macid, vif->vifid, ret);
 146                 return ret;
 147         }
 148
 149         vif->wdev.iftype = type;
 150         return 0;
 151 }
 152
 153 int qtnf_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
 154 {
 155         struct net_device *netdev =  wdev->netdev;
 156         struct qtnf_vif *vif;
 157
 158         if (WARN_ON(!netdev))
 159                 return -EFAULT;
 160
 161         vif = qtnf_netdev_get_priv(wdev->netdev);
 162
 163         qtnf_scan_done(vif->mac, true);
 164
 165         /* Stop data */
 166         netif_tx_stop_all_queues(netdev);
 167         if (netif_carrier_ok(netdev))
 168                 netif_carrier_off(netdev);
 169
 170         if (netdev->reg_state == NETREG_REGISTERED)
 171                 unregister_netdevice(netdev);
 172
 173         if (qtnf_cmd_send_del_intf(vif))
 174                 pr_err("VIF%u.%u: failed to delete VIF\n", vif->mac->macid,
 175                        vif->vifid);
 176
 177         vif->netdev->ieee80211_ptr = NULL;
 178         vif->netdev = NULL;
 179         vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
 180
 181         return 0;
 182 }
 183
 184 static struct wireless_dev *qtnf_add_virtual_intf(struct wiphy *wiphy,
 185                                                   const char *name,
 186                                                   unsigned char name_assign_t,
 187                                                   enum nl80211_iftype type,
 188                                                   struct vif_params *params)
 189 {
 190         struct qtnf_wmac *mac;
 191         struct qtnf_vif *vif;
 192         u8 *mac_addr = NULL;
 193         int ret;
 194
 195         mac = wiphy_priv(wiphy);
 196
 197         if (!mac)
 198                 return ERR_PTR(-EFAULT);
 199
 200         ret = qtnf_validate_iface_combinations(wiphy, NULL, type);
 201         if (ret) {
 202                 pr_err("MAC%u invalid combination: failed to add type %d\n",
 203                        mac->macid, type);
 204                 return ERR_PTR(ret);
 205         }
 206
 207         switch (type) {
 208         case NL80211_IFTYPE_STATION:
 209         case NL80211_IFTYPE_AP:
 210                 vif = qtnf_mac_get_free_vif(mac);
 211                 if (!vif) {
 212                         pr_err("MAC%u: no free VIF available\n", mac->macid);
 213                         return ERR_PTR(-EFAULT);
 214                 }
 215
 216                 eth_zero_addr(vif->mac_addr);
 217                 eth_zero_addr(vif->bssid);
 218                 vif->bss_priority = QTNF_DEF_BSS_PRIORITY;
 219                 vif->sta_state = QTNF_STA_DISCONNECTED;
 220                 memset(&vif->wdev, 0, sizeof(vif->wdev));
 221                 vif->wdev.wiphy = wiphy;
 222                 vif->wdev.iftype = type;
 223                 break;
 224         default:
 225                 pr_err("MAC%u: unsupported IF type %d\n", mac->macid, type);
 226                 return ERR_PTR(-ENOTSUPP);
 227         }
 228
 229         if (params)
 230                 mac_addr = params->macaddr;
 231
 232         if (qtnf_cmd_send_add_intf(vif, type, mac_addr)) {
 233                 pr_err("VIF%u.%u: failed to add VIF\n", mac->macid, vif->vifid);
 234                 goto err_cmd;
 235         }
 236
 237         if (!is_valid_ether_addr(vif->mac_addr)) {
 238                 pr_err("VIF%u.%u: FW reported bad MAC: %pM\n",
 239                        mac->macid, vif->vifid, vif->mac_addr);
 240                 goto err_mac;
 241         }
 242
 243         if (qtnf_core_net_attach(mac, vif, name, name_assign_t)) {
 244                 pr_err("VIF%u.%u: failed to attach netdev\n", mac->macid,
 245                        vif->vifid);
 246                 goto err_net;
 247         }
 248
 249         vif->wdev.netdev = vif->netdev;
 250         return &vif->wdev;
 251
 252 err_net:
 253         vif->netdev = NULL;
 254 err_mac:
 255         qtnf_cmd_send_del_intf(vif);
 256 err_cmd:
 257         vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
 258
 259         return ERR_PTR(-EFAULT);
 260 }
 261
 262 static int qtnf_mgmt_set_appie(struct qtnf_vif *vif,
 263                                const struct cfg80211_beacon_data *info)
 264 {
 265         int ret = 0;
 266
 267         if (!info->beacon_ies || !info->beacon_ies_len) {
 268                 ret = qtnf_cmd_send_mgmt_set_appie(vif, QLINK_IE_SET_BEACON_IES,
 269                                                    NULL, 0);
 270         } else {
 271                 ret = qtnf_cmd_send_mgmt_set_appie(vif, QLINK_IE_SET_BEACON_IES,
 272                                                    info->beacon_ies,
 273                                                    info->beacon_ies_len);
 274         }
 275
 276         if (ret)
 277                 goto out;
 278
 279         if (!info->proberesp_ies || !info->proberesp_ies_len) {
 280                 ret = qtnf_cmd_send_mgmt_set_appie(vif,
 281                                                    QLINK_IE_SET_PROBE_RESP_IES,
 282                                                    NULL, 0);
 283         } else {
 284                 ret = qtnf_cmd_send_mgmt_set_appie(vif,
 285                                                    QLINK_IE_SET_PROBE_RESP_IES,
 286                                                    info->proberesp_ies,
 287                                                    info->proberesp_ies_len);
 288         }
 289
 290         if (ret)
 291                 goto out;
 292
 293         if (!info->assocresp_ies || !info->assocresp_ies_len) {
 294                 ret = qtnf_cmd_send_mgmt_set_appie(vif,
 295                                                    QLINK_IE_SET_ASSOC_RESP,
 296                                                    NULL, 0);
 297         } else {
 298                 ret = qtnf_cmd_send_mgmt_set_appie(vif,
 299                                                    QLINK_IE_SET_ASSOC_RESP,
 300                                                    info->assocresp_ies,
 301                                                    info->assocresp_ies_len);
 302         }
 303
 304 out:
 305         return ret;
 306 }
 307
 308 static int qtnf_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 309                               struct cfg80211_beacon_data *info)
 310 {
 311         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 312
 313         return qtnf_mgmt_set_appie(vif, info);
 314 }
 315
 316 static int qtnf_start_ap(struct wiphy *wiphy, struct net_device *dev,
 317                          struct cfg80211_ap_settings *settings)
 318 {
 319         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 320         int ret;
 321
 322         ret = qtnf_cmd_send_start_ap(vif, settings);
 323         if (ret)
 324                 pr_err("VIF%u.%u: failed to start AP\n", vif->mac->macid,
 325                        vif->vifid);
 326
 327         return ret;
 328 }
 329
 330 static int qtnf_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 331 {
 332         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 333         int ret;
 334
 335         qtnf_scan_done(vif->mac, true);
 336
 337         ret = qtnf_cmd_send_stop_ap(vif);
 338         if (ret) {
 339                 pr_err("VIF%u.%u: failed to stop AP operation in FW\n",
 340                        vif->mac->macid, vif->vifid);
 341
 342                 netif_carrier_off(vif->netdev);
 343         }
 344
 345         return ret;
 346 }
 347
 348 static int qtnf_set_wiphy_params(struct wiphy *wiphy, u32 changed)
 349 {
 350         struct qtnf_wmac *mac = wiphy_priv(wiphy);
 351         struct qtnf_vif *vif;
 352         int ret;
 353
 354         vif = qtnf_mac_get_base_vif(mac);
 355         if (!vif) {
 356                 pr_err("MAC%u: primary VIF is not configured\n", mac->macid);
 357                 return -EFAULT;
 358         }
 359
 360         if (changed & (WIPHY_PARAM_RETRY_LONG | WIPHY_PARAM_RETRY_SHORT)) {
 361                 pr_err("MAC%u: can't modify retry params\n", mac->macid);
 362                 return -EOPNOTSUPP;
 363         }
 364
 365         ret = qtnf_cmd_send_update_phy_params(mac, changed);
 366         if (ret)
 367                 pr_err("MAC%u: failed to update PHY params\n", mac->macid);
 368
 369         return ret;
 370 }
 371
 372 static void
 373 qtnf_mgmt_frame_register(struct wiphy *wiphy, struct wireless_dev *wdev,
 374                          u16 frame_type, bool reg)
 375 {
 376         struct qtnf_vif *vif = qtnf_netdev_get_priv(wdev->netdev);
 377         u16 mgmt_type;
 378         u16 new_mask;
 379         u16 qlink_frame_type = 0;
 380
 381         mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4;
 382
 383         if (reg)
 384                 new_mask = vif->mgmt_frames_bitmask | BIT(mgmt_type);
 385         else
 386                 new_mask = vif->mgmt_frames_bitmask & ~BIT(mgmt_type);
 387
 388         if (new_mask == vif->mgmt_frames_bitmask)
 389                 return;
 390
 391         switch (frame_type & IEEE80211_FCTL_STYPE) {
 392         case IEEE80211_STYPE_REASSOC_REQ:
 393         case IEEE80211_STYPE_ASSOC_REQ:
 394                 qlink_frame_type = QLINK_MGMT_FRAME_ASSOC_REQ;
 395                 break;
 396         case IEEE80211_STYPE_AUTH:
 397                 qlink_frame_type = QLINK_MGMT_FRAME_AUTH;
 398                 break;
 399         case IEEE80211_STYPE_PROBE_REQ:
 400                 qlink_frame_type = QLINK_MGMT_FRAME_PROBE_REQ;
 401                 break;
 402         case IEEE80211_STYPE_ACTION:
 403                 qlink_frame_type = QLINK_MGMT_FRAME_ACTION;
 404                 break;
 405         default:
 406                 pr_warn("VIF%u.%u: unsupported frame type: %X\n",
 407                         vif->mac->macid, vif->vifid,
 408                         (frame_type & IEEE80211_FCTL_STYPE) >> 4);
 409                 return;
 410         }
 411
 412         if (qtnf_cmd_send_register_mgmt(vif, qlink_frame_type, reg)) {
 413                 pr_warn("VIF%u.%u: failed to %sregister mgmt frame type 0x%x\n",
 414                         vif->mac->macid, vif->vifid, reg ? "" : "un",
 415                         frame_type);
 416                 return;
 417         }
 418
 419         vif->mgmt_frames_bitmask = new_mask;
 420         pr_debug("VIF%u.%u: %sregistered mgmt frame type 0x%x\n",
 421                  vif->mac->macid, vif->vifid, reg ? "" : "un", frame_type);
 422 }
 423
 424 static int
 425 qtnf_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
 426              struct cfg80211_mgmt_tx_params *params, u64 *cookie)
 427 {
 428         struct qtnf_vif *vif = qtnf_netdev_get_priv(wdev->netdev);
 429         const struct ieee80211_mgmt *mgmt_frame = (void *)params->buf;
 430         u32 short_cookie = prandom_u32();
 431         u16 flags = 0;
 432         u16 freq;
 433
 434         *cookie = short_cookie;
 435
 436         if (params->offchan)
 437                 flags |= QLINK_MGMT_FRAME_TX_FLAG_OFFCHAN;
 438
 439         if (params->no_cck)
 440                 flags |= QLINK_MGMT_FRAME_TX_FLAG_NO_CCK;
 441
 442         if (params->dont_wait_for_ack)
 443                 flags |= QLINK_MGMT_FRAME_TX_FLAG_ACK_NOWAIT;
 444
 445         /* If channel is not specified, pass "freq = 0" to tell device
 446          * firmware to use current channel.
 447          */
 448         if (params->chan)
 449                 freq = params->chan->center_freq;
 450         else
 451                 freq = 0;
 452
 453         pr_debug("%s freq:%u; FC:%.4X; DA:%pM; len:%zu; C:%.8X; FL:%.4X\n",
 454                  wdev->netdev->name, freq,
 455                  le16_to_cpu(mgmt_frame->frame_control), mgmt_frame->da,
 456                  params->len, short_cookie, flags);
 457
 458         return qtnf_cmd_send_mgmt_frame(vif, short_cookie, flags,
 459                                         freq,
 460                                         params->buf, params->len);
 461 }
 462
 463 static int
 464 qtnf_get_station(struct wiphy *wiphy, struct net_device *dev,
 465                  const u8 *mac, struct station_info *sinfo)
 466 {
 467         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 468
 469         sinfo->generation = vif->generation;
 470         return qtnf_cmd_get_sta_info(vif, mac, sinfo);
 471 }
 472
 473 static int
 474 qtnf_dump_station(struct wiphy *wiphy, struct net_device *dev,
 475                   int idx, u8 *mac, struct station_info *sinfo)
 476 {
 477         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 478         const struct qtnf_sta_node *sta_node;
 479         int ret;
 480
 481         sta_node = qtnf_sta_list_lookup_index(&vif->sta_list, idx);
 482
 483         if (unlikely(!sta_node))
 484                 return -ENOENT;
 485
 486         ether_addr_copy(mac, sta_node->mac_addr);
 487
 488         ret = qtnf_cmd_get_sta_info(vif, sta_node->mac_addr, sinfo);
 489
 490         if (unlikely(ret == -ENOENT)) {
 491                 qtnf_sta_list_del(vif, mac);
 492                 cfg80211_del_sta(vif->netdev, mac, GFP_KERNEL);
 493                 sinfo->filled = 0;
 494         }
 495
 496         sinfo->generation = vif->generation;
 497
 498         return ret;
 499 }
 500
 501 static int qtnf_add_key(struct wiphy *wiphy, struct net_device *dev,
 502                         u8 key_index, bool pairwise, const u8 *mac_addr,
 503                         struct key_params *params)
 504 {
 505         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 506         int ret;
 507
 508         ret = qtnf_cmd_send_add_key(vif, key_index, pairwise, mac_addr, params);
 509         if (ret)
 510                 pr_err("VIF%u.%u: failed to add key: cipher=%x idx=%u pw=%u\n",
 511                        vif->mac->macid, vif->vifid, params->cipher, key_index,
 512                        pairwise);
 513
 514         return ret;
 515 }
 516
 517 static int qtnf_del_key(struct wiphy *wiphy, struct net_device *dev,
 518                         u8 key_index, bool pairwise, const u8 *mac_addr)
 519 {
 520         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 521         int ret;
 522
 523         ret = qtnf_cmd_send_del_key(vif, key_index, pairwise, mac_addr);
 524         if (ret)
 525                 pr_err("VIF%u.%u: failed to delete key: idx=%u pw=%u\n",
 526                        vif->mac->macid, vif->vifid, key_index, pairwise);
 527
 528         return ret;
 529 }
 530
 531 static int qtnf_set_default_key(struct wiphy *wiphy, struct net_device *dev,
 532                                 u8 key_index, bool unicast, bool multicast)
 533 {
 534         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 535         int ret;
 536
 537         ret = qtnf_cmd_send_set_default_key(vif, key_index, unicast, multicast);
 538         if (ret)
 539                 pr_err("VIF%u.%u: failed to set dflt key: idx=%u uc=%u mc=%u\n",
 540                        vif->mac->macid, vif->vifid, key_index, unicast,
 541                        multicast);
 542
 543         return ret;
 544 }
 545
 546 static int
 547 qtnf_set_default_mgmt_key(struct wiphy *wiphy, struct net_device *dev,
 548                           u8 key_index)
 549 {
 550         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 551         int ret;
 552
 553         ret = qtnf_cmd_send_set_default_mgmt_key(vif, key_index);
 554         if (ret)
 555                 pr_err("VIF%u.%u: failed to set default MGMT key: idx=%u\n",
 556                        vif->mac->macid, vif->vifid, key_index);
 557
 558         return ret;
 559 }
 560
 561 static int
 562 qtnf_change_station(struct wiphy *wiphy, struct net_device *dev,
 563                     const u8 *mac, struct station_parameters *params)
 564 {
 565         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 566         int ret;
 567
 568         ret = qtnf_cmd_send_change_sta(vif, mac, params);
 569         if (ret)
 570                 pr_err("VIF%u.%u: failed to change STA %pM\n",
 571                        vif->mac->macid, vif->vifid, mac);
 572
 573         return ret;
 574 }
 575
 576 static int
 577 qtnf_del_station(struct wiphy *wiphy, struct net_device *dev,
 578                  struct station_del_parameters *params)
 579 {
 580         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 581         int ret;
 582
 583         if (params->mac &&
 584             (vif->wdev.iftype == NL80211_IFTYPE_AP) &&
 585             !is_broadcast_ether_addr(params->mac) &&
 586             !qtnf_sta_list_lookup(&vif->sta_list, params->mac))
 587                 return 0;
 588
 589         ret = qtnf_cmd_send_del_sta(vif, params);
 590         if (ret)
 591                 pr_err("VIF%u.%u: failed to delete STA %pM\n",
 592                        vif->mac->macid, vif->vifid, params->mac);
 593         return ret;
 594 }
 595
 596 static int
 597 qtnf_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
 598 {
 599         struct qtnf_wmac *mac = wiphy_priv(wiphy);
 600
 601         cancel_delayed_work_sync(&mac->scan_timeout);
 602
 603         mac->scan_req = request;
 604
 605         if (qtnf_cmd_send_scan(mac)) {
 606                 pr_err("MAC%u: failed to start scan\n", mac->macid);
 607                 mac->scan_req = NULL;
 608                 return -EFAULT;
 609         }
 610
 611         queue_delayed_work(mac->bus->workqueue, &mac->scan_timeout,
 612                            QTNF_SCAN_TIMEOUT_SEC * HZ);
 613
 614         return 0;
 615 }
 616
 617 static int
 618 qtnf_connect(struct wiphy *wiphy, struct net_device *dev,
 619              struct cfg80211_connect_params *sme)
 620 {
 621         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 622         int ret;
 623
 624         if (vif->wdev.iftype != NL80211_IFTYPE_STATION)
 625                 return -EOPNOTSUPP;
 626
 627         if (vif->sta_state != QTNF_STA_DISCONNECTED)
 628                 return -EBUSY;
 629
 630         if (sme->bssid)
 631                 ether_addr_copy(vif->bssid, sme->bssid);
 632         else
 633                 eth_zero_addr(vif->bssid);
 634
 635         ret = qtnf_cmd_send_connect(vif, sme);
 636         if (ret) {
 637                 pr_err("VIF%u.%u: failed to connect\n", vif->mac->macid,
 638                        vif->vifid);
 639                 return ret;
 640         }
 641
 642         vif->sta_state = QTNF_STA_CONNECTING;
 643         return 0;
 644 }
 645
 646 static int
 647 qtnf_disconnect(struct wiphy *wiphy, struct net_device *dev,
 648                 u16 reason_code)
 649 {
 650         struct qtnf_wmac *mac = wiphy_priv(wiphy);
 651         struct qtnf_vif *vif;
 652         int ret = 0;
 653
 654         vif = qtnf_mac_get_base_vif(mac);
 655         if (!vif) {
 656                 pr_err("MAC%u: primary VIF is not configured\n", mac->macid);
 657                 ret = -EFAULT;
 658                 goto out;
 659         }
 660
 661         if (vif->wdev.iftype != NL80211_IFTYPE_STATION) {
 662                 ret = -EOPNOTSUPP;
 663                 goto out;
 664         }
 665
 666         qtnf_scan_done(mac, true);
 667
 668         if (vif->sta_state == QTNF_STA_DISCONNECTED)
 669                 goto out;
 670
 671         ret = qtnf_cmd_send_disconnect(vif, reason_code);
 672         if (ret) {
 673                 pr_err("VIF%u.%u: failed to disconnect\n", mac->macid,
 674                        vif->vifid);
 675                 goto out;
 676         }
 677
 678 out:
 679         if (vif->sta_state == QTNF_STA_CONNECTING)
 680                 vif->sta_state = QTNF_STA_DISCONNECTED;
 681
 682         return ret;
 683 }
 684
 685 static int
 686 qtnf_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 687                  int idx, struct survey_info *survey)
 688 {
 689         struct qtnf_wmac *mac = wiphy_priv(wiphy);
 690         struct wireless_dev *wdev = dev->ieee80211_ptr;
 691         struct ieee80211_supported_band *sband;
 692         const struct cfg80211_chan_def *chandef = &wdev->chandef;
 693         struct ieee80211_channel *chan;
 694         struct qtnf_chan_stats stats;
 695         struct qtnf_vif *vif;
 696         int ret;
 697
 698         vif = qtnf_netdev_get_priv(dev);
 699
 700         sband = wiphy->bands[NL80211_BAND_2GHZ];
 701         if (sband && idx >= sband->n_channels) {
 702                 idx -= sband->n_channels;
 703                 sband = NULL;
 704         }
 705
 706         if (!sband)
 707                 sband = wiphy->bands[NL80211_BAND_5GHZ];
 708
 709         if (!sband || idx >= sband->n_channels)
 710                 return -ENOENT;
 711
 712         chan = &sband->channels[idx];
 713         memset(&stats, 0, sizeof(stats));
 714
 715         survey->channel = chan;
 716         survey->filled = 0x0;
 717
 718         if (chandef->chan) {
 719                 if (chan->hw_value == chandef->chan->hw_value)
 720                         survey->filled = SURVEY_INFO_IN_USE;
 721         }
 722
 723         ret = qtnf_cmd_get_chan_stats(mac, chan->hw_value, &stats);
 724         switch (ret) {
 725         case 0:
 726                 if (unlikely(stats.chan_num != chan->hw_value)) {
 727                         pr_err("received stats for channel %d instead of %d\n",
 728                                stats.chan_num, chan->hw_value);
 729                         ret = -EINVAL;
 730                         break;
 731                 }
 732
 733                 survey->filled |= SURVEY_INFO_TIME |
 734                                  SURVEY_INFO_TIME_SCAN |
 735                                  SURVEY_INFO_TIME_BUSY |
 736                                  SURVEY_INFO_TIME_RX |
 737                                  SURVEY_INFO_TIME_TX |
 738                                  SURVEY_INFO_NOISE_DBM;
 739
 740                 survey->time_scan = stats.cca_try;
 741                 survey->time = stats.cca_try;
 742                 survey->time_tx = stats.cca_tx;
 743                 survey->time_rx = stats.cca_rx;
 744                 survey->time_busy = stats.cca_busy;
 745                 survey->noise = stats.chan_noise;
 746                 break;
 747         case -ENOENT:
 748                 pr_debug("no stats for channel %u\n", chan->hw_value);
 749                 ret = 0;
 750                 break;
 751         default:
 752                 pr_debug("failed to get chan(%d) stats from card\n",
 753                          chan->hw_value);
 754                 ret = -EINVAL;
 755                 break;
 756         }
 757
 758         return ret;
 759 }
 760
 761 static int
 762 qtnf_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
 763                  struct cfg80211_chan_def *chandef)
 764 {
 765         struct net_device *ndev = wdev->netdev;
 766         struct qtnf_vif *vif;
 767         int ret;
 768
 769         if (!ndev)
 770                 return -ENODEV;
 771
 772         vif = qtnf_netdev_get_priv(wdev->netdev);
 773
 774         ret = qtnf_cmd_get_channel(vif, chandef);
 775         if (ret) {
 776                 pr_err("%s: failed to get channel: %d\n", ndev->name, ret);
 777                 goto out;
 778         }
 779
 780         if (!cfg80211_chandef_valid(chandef)) {
 781                 pr_err("%s: bad channel freq=%u cf1=%u cf2=%u bw=%u\n",
 782                        ndev->name, chandef->chan->center_freq,
 783                        chandef->center_freq1, chandef->center_freq2,
 784                        chandef->width);
 785                 ret = -ENODATA;
 786         }
 787
 788 out:
 789         return ret;
 790 }
 791
 792 static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
 793                                struct cfg80211_csa_settings *params)
 794 {
 795         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 796         int ret;
 797
 798         pr_debug("%s: chan(%u) count(%u) radar(%u) block_tx(%u)\n", dev->name,
 799                  params->chandef.chan->hw_value, params->count,
 800                  params->radar_required, params->block_tx);
 801
 802         if (!cfg80211_chandef_valid(&params->chandef)) {
 803                 pr_err("%s: invalid channel\n", dev->name);
 804                 return -EINVAL;
 805         }
 806
 807         ret = qtnf_cmd_send_chan_switch(vif, params);
 808         if (ret)
 809                 pr_warn("%s: failed to switch to channel (%u)\n",
 810                         dev->name, params->chandef.chan->hw_value);
 811
 812         return ret;
 813 }
 814
 815 static int qtnf_start_radar_detection(struct wiphy *wiphy,
 816                                       struct net_device *ndev,
 817                                       struct cfg80211_chan_def *chandef,
 818                                       u32 cac_time_ms)
 819 {
 820         struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
 821         int ret;
 822
 823         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
 824                 return -ENOTSUPP;
 825
 826         ret = qtnf_cmd_start_cac(vif, chandef, cac_time_ms);
 827         if (ret)
 828                 pr_err("%s: failed to start CAC ret=%d\n", ndev->name, ret);
 829
 830         return ret;
 831 }
 832
 833 static int qtnf_set_mac_acl(struct wiphy *wiphy,
 834                             struct net_device *dev,
 835                             const struct cfg80211_acl_data *params)
 836 {
 837         struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 838         int ret;
 839
 840         ret = qtnf_cmd_set_mac_acl(vif, params);
 841         if (ret)
 842                 pr_err("%s: failed to set mac ACL ret=%d\n", dev->name, ret);
 843
 844         return ret;
 845 }
 846
 847 static struct cfg80211_ops qtn_cfg80211_ops = {
 848         .add_virtual_intf       = qtnf_add_virtual_intf,
 849         .change_virtual_intf    = qtnf_change_virtual_intf,
 850         .del_virtual_intf       = qtnf_del_virtual_intf,
 851         .start_ap               = qtnf_start_ap,
 852         .change_beacon          = qtnf_change_beacon,
 853         .stop_ap                = qtnf_stop_ap,
 854         .set_wiphy_params       = qtnf_set_wiphy_params,
 855         .mgmt_frame_register    = qtnf_mgmt_frame_register,
 856         .mgmt_tx                = qtnf_mgmt_tx,
 857         .change_station         = qtnf_change_station,
 858         .del_station            = qtnf_del_station,
 859         .get_station            = qtnf_get_station,
 860         .dump_station           = qtnf_dump_station,
 861         .add_key                = qtnf_add_key,
 862         .del_key                = qtnf_del_key,
 863         .set_default_key        = qtnf_set_default_key,
 864         .set_default_mgmt_key   = qtnf_set_default_mgmt_key,
 865         .scan                   = qtnf_scan,
 866         .connect                = qtnf_connect,
 867         .disconnect             = qtnf_disconnect,
 868         .dump_survey            = qtnf_dump_survey,
 869         .get_channel            = qtnf_get_channel,
 870         .channel_switch         = qtnf_channel_switch,
 871         .start_radar_detection  = qtnf_start_radar_detection,
 872         .set_mac_acl            = qtnf_set_mac_acl,
 873 };
 874
 875 static void qtnf_cfg80211_reg_notifier(struct wiphy *wiphy_in,
 876                                        struct regulatory_request *req)
 877 {
 878         struct qtnf_wmac *mac = wiphy_priv(wiphy_in);
 879         struct qtnf_bus *bus = mac->bus;
 880         struct wiphy *wiphy;
 881         unsigned int mac_idx;
 882         enum nl80211_band band;
 883         int ret;
 884
 885         pr_debug("MAC%u: initiator=%d alpha=%c%c\n", mac->macid, req->initiator,
 886                  req->alpha2[0], req->alpha2[1]);
 887
 888         ret = qtnf_cmd_reg_notify(bus, req);
 889         if (ret) {
 890                 if (ret != -EOPNOTSUPP && ret != -EALREADY)
 891                         pr_err("failed to update reg domain to %c%c\n",
 892                                req->alpha2[0], req->alpha2[1]);
 893                 return;
 894         }
 895
 896         for (mac_idx = 0; mac_idx < QTNF_MAX_MAC; ++mac_idx) {
 897                 if (!(bus->hw_info.mac_bitmap & (1 << mac_idx)))
 898                         continue;
 899
 900                 mac = bus->mac[mac_idx];
 901                 if (!mac)
 902                         continue;
 903
 904                 wiphy = priv_to_wiphy(mac);
 905
 906                 for (band = 0; band < NUM_NL80211_BANDS; ++band) {
 907                         if (!wiphy->bands[band])
 908                                 continue;
 909
 910                         ret = qtnf_cmd_band_info_get(mac, wiphy->bands[band]);
 911                         if (ret)
 912                                 pr_err("failed to get chan info for mac %u band %u\n",
 913                                        mac_idx, band);
 914                 }
 915         }
 916 }
 917
 918 struct wiphy *qtnf_wiphy_allocate(struct qtnf_bus *bus)
 919 {
 920         struct wiphy *wiphy;
 921
 922         if (bus->hw_info.hw_capab & QLINK_HW_CAPAB_DFS_OFFLOAD)
 923                 qtn_cfg80211_ops.start_radar_detection = NULL;
 924
 925         wiphy = wiphy_new(&qtn_cfg80211_ops, sizeof(struct qtnf_wmac));
 926         if (!wiphy)
 927                 return NULL;
 928
 929         set_wiphy_dev(wiphy, bus->dev);
 930
 931         return wiphy;
 932 }
 933
 934 static int
 935 qtnf_wiphy_setup_if_comb(struct wiphy *wiphy, struct qtnf_mac_info *mac_info)
 936 {
 937         struct ieee80211_iface_combination *if_comb;
 938         size_t n_if_comb;
 939         u16 interface_modes = 0;
 940         size_t i, j;
 941
 942         if_comb = mac_info->if_comb;
 943         n_if_comb = mac_info->n_if_comb;
 944
 945         if (!if_comb || !n_if_comb)
 946                 return -ENOENT;
 947
 948         for (i = 0; i < n_if_comb; i++) {
 949                 if_comb[i].radar_detect_widths = mac_info->radar_detect_widths;
 950
 951                 for (j = 0; j < if_comb[i].n_limits; j++)
 952                         interface_modes |= if_comb[i].limits[j].types;
 953         }
 954
 955         wiphy->iface_combinations = if_comb;
 956         wiphy->n_iface_combinations = n_if_comb;
 957         wiphy->interface_modes = interface_modes;
 958
 959         return 0;
 960 }
 961
 962 int qtnf_wiphy_register(struct qtnf_hw_info *hw_info, struct qtnf_wmac *mac)
 963 {
 964         struct wiphy *wiphy = priv_to_wiphy(mac);
 965         struct qtnf_mac_info *macinfo = &mac->macinfo;
 966         int ret;
 967
 968         if (!wiphy) {
 969                 pr_err("invalid wiphy pointer\n");
 970                 return -EFAULT;
 971         }
 972
 973         wiphy->frag_threshold = macinfo->frag_thr;
 974         wiphy->rts_threshold = macinfo->rts_thr;
 975         wiphy->retry_short = macinfo->sretry_limit;
 976         wiphy->retry_long = macinfo->lretry_limit;
 977         wiphy->coverage_class = macinfo->coverage_class;
 978
 979         wiphy->max_scan_ssids = QTNF_MAX_SSID_LIST_LENGTH;
 980         wiphy->max_scan_ie_len = QTNF_MAX_VSIE_LEN;
 981         wiphy->mgmt_stypes = qtnf_mgmt_stypes;
 982         wiphy->max_remain_on_channel_duration = 5000;
 983         wiphy->max_acl_mac_addrs = macinfo->max_acl_mac_addrs;
 984         wiphy->max_num_csa_counters = 2;
 985
 986         ret = qtnf_wiphy_setup_if_comb(wiphy, macinfo);
 987         if (ret)
 988                 goto out;
 989
 990         /* Initialize cipher suits */
 991         wiphy->cipher_suites = qtnf_cipher_suites;
 992         wiphy->n_cipher_suites = ARRAY_SIZE(qtnf_cipher_suites);
 993         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
 994         wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME |
 995                         WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD |
 996                         WIPHY_FLAG_AP_UAPSD |
 997                         WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 998
 999         if (hw_info->hw_capab & QLINK_HW_CAPAB_DFS_OFFLOAD)
1000                 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD);
1001
1002         wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
1003                                     NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2;
1004
1005         wiphy->available_antennas_tx = macinfo->num_tx_chain;
1006         wiphy->available_antennas_rx = macinfo->num_rx_chain;
1007
1008         wiphy->max_ap_assoc_sta = macinfo->max_ap_assoc_sta;
1009         wiphy->ht_capa_mod_mask = &macinfo->ht_cap_mod_mask;
1010         wiphy->vht_capa_mod_mask = &macinfo->vht_cap_mod_mask;
1011
1012         ether_addr_copy(wiphy->perm_addr, mac->macaddr);
1013
1014         if (hw_info->hw_capab & QLINK_HW_CAPAB_STA_INACT_TIMEOUT)
1015                 wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
1016
1017         if (hw_info->hw_capab & QLINK_HW_CAPAB_REG_UPDATE) {
1018                 wiphy->regulatory_flags |= REGULATORY_STRICT_REG |
1019                         REGULATORY_CUSTOM_REG;
1020                 wiphy->reg_notifier = qtnf_cfg80211_reg_notifier;
1021                 wiphy_apply_custom_regulatory(wiphy, hw_info->rd);
1022         } else {
1023                 wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
1024         }
1025
1026         strlcpy(wiphy->fw_version, hw_info->fw_version,
1027                 sizeof(wiphy->fw_version));
1028         wiphy->hw_version = hw_info->hw_version;
1029
1030         ret = wiphy_register(wiphy);
1031         if (ret < 0)
1032                 goto out;
1033
1034         if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED)
1035                 ret = regulatory_set_wiphy_regd(wiphy, hw_info->rd);
1036         else if (isalpha(hw_info->rd->alpha2[0]) &&
1037                  isalpha(hw_info->rd->alpha2[1]))
1038                 ret = regulatory_hint(wiphy, hw_info->rd->alpha2);
1039
1040 out:
1041         return ret;
1042 }
1043
1044 void qtnf_netdev_updown(struct net_device *ndev, bool up)
1045 {
1046         struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
1047
1048         if (qtnf_cmd_send_updown_intf(vif, up))
1049                 pr_err("failed to send up/down command to FW\n");
1050 }
1051
1052 void qtnf_virtual_intf_cleanup(struct net_device *ndev)
1053 {
1054         struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
1055         struct qtnf_wmac *mac = wiphy_priv(vif->wdev.wiphy);
1056
1057         if (vif->wdev.iftype == NL80211_IFTYPE_STATION) {
1058                 switch (vif->sta_state) {
1059                 case QTNF_STA_DISCONNECTED:
1060                         break;
1061                 case QTNF_STA_CONNECTING:
1062                         cfg80211_connect_result(vif->netdev,
1063                                                 vif->bssid, NULL, 0,
1064                                                 NULL, 0,
1065                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
1066                                                 GFP_KERNEL);
1067                         qtnf_disconnect(vif->wdev.wiphy, ndev,
1068                                         WLAN_REASON_DEAUTH_LEAVING);
1069                         break;
1070                 case QTNF_STA_CONNECTED:
1071                         cfg80211_disconnected(vif->netdev,
1072                                               WLAN_REASON_DEAUTH_LEAVING,
1073                                               NULL, 0, 1, GFP_KERNEL);
1074                         qtnf_disconnect(vif->wdev.wiphy, ndev,
1075                                         WLAN_REASON_DEAUTH_LEAVING);
1076                         break;
1077                 }
1078
1079                 vif->sta_state = QTNF_STA_DISCONNECTED;
1080         }
1081
1082         qtnf_scan_done(mac, true);
1083 }
1084
1085 void qtnf_cfg80211_vif_reset(struct qtnf_vif *vif)
1086 {
1087         if (vif->wdev.iftype == NL80211_IFTYPE_STATION) {
1088                 switch (vif->sta_state) {
1089                 case QTNF_STA_CONNECTING:
1090                         cfg80211_connect_result(vif->netdev,
1091                                                 vif->bssid, NULL, 0,
1092                                                 NULL, 0,
1093                                                 WLAN_STATUS_UNSPECIFIED_FAILURE,
1094                                                 GFP_KERNEL);
1095                         break;
1096                 case QTNF_STA_CONNECTED:
1097                         cfg80211_disconnected(vif->netdev,
1098                                               WLAN_REASON_DEAUTH_LEAVING,
1099                                               NULL, 0, 1, GFP_KERNEL);
1100                         break;
1101                 case QTNF_STA_DISCONNECTED:
1102                         break;
1103                 }
1104         }
1105
1106         cfg80211_shutdown_all_interfaces(vif->wdev.wiphy);
1107         vif->sta_state = QTNF_STA_DISCONNECTED;
1108 }
1109
1110 void qtnf_band_init_rates(struct ieee80211_supported_band *band)
1111 {
1112         switch (band->band) {
1113         case NL80211_BAND_2GHZ:
1114                 band->bitrates = qtnf_rates_2g;
1115                 band->n_bitrates = ARRAY_SIZE(qtnf_rates_2g);
1116                 break;
1117         case NL80211_BAND_5GHZ:
1118                 band->bitrates = qtnf_rates_5g;
1119                 band->n_bitrates = ARRAY_SIZE(qtnf_rates_5g);
1120                 break;
1121         default:
1122                 band->bitrates = NULL;
1123                 band->n_bitrates = 0;
1124                 break;
1125         }
1126 }