drivers/staging/rtl8188eu/core/rtw_sta_mgt.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   5  *
   6  ******************************************************************************/
   7 #define _RTW_STA_MGT_C_
   8
   9 #include <osdep_service.h>
  10 #include <drv_types.h>
  11 #include <recv_osdep.h>
  12 #include <xmit_osdep.h>
  13 #include <mlme_osdep.h>
  14 #include <sta_info.h>
  15 #include <linux/vmalloc.h>
  16
  17 static void _rtw_init_stainfo(struct sta_info *psta)
  18 {
  19         memset((u8 *)psta, 0, sizeof(struct sta_info));
  20
  21         spin_lock_init(&psta->lock);
  22         INIT_LIST_HEAD(&psta->list);
  23         INIT_LIST_HEAD(&psta->hash_list);
  24         _rtw_init_queue(&psta->sleep_q);
  25         psta->sleepq_len = 0;
  26
  27         _rtw_init_sta_xmit_priv(&psta->sta_xmitpriv);
  28         _rtw_init_sta_recv_priv(&psta->sta_recvpriv);
  29
  30 #ifdef CONFIG_88EU_AP_MODE
  31
  32         INIT_LIST_HEAD(&psta->asoc_list);
  33
  34         INIT_LIST_HEAD(&psta->auth_list);
  35
  36         psta->expire_to = 0;
  37
  38         psta->flags = 0;
  39
  40         psta->capability = 0;
  41
  42         psta->bpairwise_key_installed = false;
  43
  44         psta->nonerp_set = 0;
  45         psta->no_short_slot_time_set = 0;
  46         psta->no_short_preamble_set = 0;
  47         psta->no_ht_gf_set = 0;
  48         psta->no_ht_set = 0;
  49         psta->ht_20mhz_set = 0;
  50
  51         psta->under_exist_checking = 0;
  52
  53         psta->keep_alive_trycnt = 0;
  54
  55 #endif  /*  CONFIG_88EU_AP_MODE */
  56 }
  57
  58 u32 _rtw_init_sta_priv(struct sta_priv *pstapriv)
  59 {
  60         struct sta_info *psta;
  61         s32 i;
  62
  63         pstapriv->pallocated_stainfo_buf = vzalloc(sizeof(struct sta_info) * NUM_STA + 4);
  64
  65         if (!pstapriv->pallocated_stainfo_buf)
  66                 return _FAIL;
  67
  68         pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 -
  69                 ((size_t)(pstapriv->pallocated_stainfo_buf) & 3);
  70
  71         _rtw_init_queue(&pstapriv->free_sta_queue);
  72
  73         spin_lock_init(&pstapriv->sta_hash_lock);
  74
  75         pstapriv->asoc_sta_count = 0;
  76         _rtw_init_queue(&pstapriv->sleep_q);
  77         _rtw_init_queue(&pstapriv->wakeup_q);
  78
  79         psta = (struct sta_info *)(pstapriv->pstainfo_buf);
  80
  81         for (i = 0; i < NUM_STA; i++) {
  82                 _rtw_init_stainfo(psta);
  83
  84                 INIT_LIST_HEAD(&pstapriv->sta_hash[i]);
  85
  86                 list_add_tail(&psta->list,
  87                               get_list_head(&pstapriv->free_sta_queue));
  88
  89                 psta++;
  90         }
  91
  92 #ifdef CONFIG_88EU_AP_MODE
  93
  94         pstapriv->sta_dz_bitmap = 0;
  95         pstapriv->tim_bitmap = 0;
  96
  97         INIT_LIST_HEAD(&pstapriv->asoc_list);
  98         INIT_LIST_HEAD(&pstapriv->auth_list);
  99         spin_lock_init(&pstapriv->asoc_list_lock);
 100         spin_lock_init(&pstapriv->auth_list_lock);
 101         pstapriv->asoc_list_cnt = 0;
 102         pstapriv->auth_list_cnt = 0;
 103
 104         pstapriv->auth_to = 3; /*  3*2 = 6 sec */
 105         pstapriv->assoc_to = 3;
 106         pstapriv->expire_to = 3; /*  3*2 = 6 sec */
 107         pstapriv->max_num_sta = NUM_STA;
 108 #endif
 109
 110         return _SUCCESS;
 111 }
 112
 113 inline int rtw_stainfo_offset(struct sta_priv *stapriv, struct sta_info *sta)
 114 {
 115         int offset = (((u8 *)sta) - stapriv->pstainfo_buf)/sizeof(struct sta_info);
 116
 117         if (!stainfo_offset_valid(offset))
 118                 DBG_88E("%s invalid offset(%d), out of range!!!", __func__, offset);
 119
 120         return offset;
 121 }
 122
 123 inline struct sta_info *rtw_get_stainfo_by_offset(struct sta_priv *stapriv, int offset)
 124 {
 125         if (!stainfo_offset_valid(offset))
 126                 DBG_88E("%s invalid offset(%d), out of range!!!", __func__, offset);
 127
 128         return (struct sta_info *)(stapriv->pstainfo_buf + offset * sizeof(struct sta_info));
 129 }
 130
 131 u32 _rtw_free_sta_priv(struct sta_priv *pstapriv)
 132 {
 133         struct list_head *phead, *plist;
 134         struct sta_info *psta = NULL;
 135         struct recv_reorder_ctrl *preorder_ctrl;
 136         int index;
 137
 138         if (!pstapriv)
 139                 return _SUCCESS;
 140
 141         /* delete all reordering_ctrl_timer */
 142         spin_lock_bh(&pstapriv->sta_hash_lock);
 143         for (index = 0; index < NUM_STA; index++) {
 144                 phead = &pstapriv->sta_hash[index];
 145                 plist = phead->next;
 146
 147                 while (phead != plist) {
 148                         int i;
 149
 150                         psta = container_of(plist, struct sta_info, hash_list);
 151                         plist = plist->next;
 152
 153                         for (i = 0; i < 16; i++) {
 154                                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 155                                 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 156                         }
 157                 }
 158         }
 159         spin_unlock_bh(&pstapriv->sta_hash_lock);
 160
 161         vfree(pstapriv->pallocated_stainfo_buf);
 162
 163         return _SUCCESS;
 164 }
 165
 166 struct sta_info *rtw_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
 167 {
 168         s32 index;
 169         struct list_head *phash_list;
 170         struct sta_info *psta;
 171         struct __queue *pfree_sta_queue;
 172         struct recv_reorder_ctrl *preorder_ctrl;
 173         int i = 0;
 174         u16 wRxSeqInitialValue = 0xffff;
 175
 176         pfree_sta_queue = &pstapriv->free_sta_queue;
 177
 178         spin_lock_bh(&pfree_sta_queue->lock);
 179         psta = list_first_entry_or_null(&pfree_sta_queue->queue,
 180                                         struct sta_info, list);
 181         if (!psta) {
 182                 spin_unlock_bh(&pfree_sta_queue->lock);
 183                 return NULL;
 184         }
 185
 186         list_del_init(&psta->list);
 187         spin_unlock_bh(&pfree_sta_queue->lock);
 188         _rtw_init_stainfo(psta);
 189         memcpy(psta->hwaddr, hwaddr, ETH_ALEN);
 190         index = wifi_mac_hash(hwaddr);
 191         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 192                  ("%s: index=%x", __func__, index));
 193         if (index >= NUM_STA) {
 194                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 195                          ("ERROR => %s: index >= NUM_STA", __func__));
 196                 return NULL;
 197         }
 198         phash_list = &pstapriv->sta_hash[index];
 199
 200         spin_lock_bh(&pstapriv->sta_hash_lock);
 201         list_add_tail(&psta->hash_list, phash_list);
 202         pstapriv->asoc_sta_count++;
 203         spin_unlock_bh(&pstapriv->sta_hash_lock);
 204
 205         /* Commented by Albert 2009/08/13
 206          * For the SMC router, the sequence number of first packet of
 207          * WPS handshake will be 0. In this case, this packet will be
 208          * dropped by recv_decache function if we use the 0x00 as the
 209          * default value for tid_rxseq variable. So, we initialize the
 210          * tid_rxseq variable as the 0xffff.
 211          */
 212
 213         for (i = 0; i < 16; i++)
 214                 memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i],
 215                        &wRxSeqInitialValue, 2);
 216
 217         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 218                  ("alloc number_%d stainfo  with hwaddr = %pM\n",
 219                   pstapriv->asoc_sta_count, hwaddr));
 220
 221         init_addba_retry_timer(pstapriv->padapter, psta);
 222
 223         /* for A-MPDU Rx reordering buffer control */
 224         for (i = 0; i < 16; i++) {
 225                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 226
 227                 preorder_ctrl->padapter = pstapriv->padapter;
 228
 229                 preorder_ctrl->enable = false;
 230
 231                 preorder_ctrl->indicate_seq = 0xffff;
 232                 preorder_ctrl->wend_b = 0xffff;
 233                 preorder_ctrl->wsize_b = 64;/* 64; */
 234
 235                 _rtw_init_queue(&preorder_ctrl->pending_recvframe_queue);
 236
 237                 rtw_init_recv_timer(preorder_ctrl);
 238         }
 239
 240         /* init for DM */
 241         psta->rssi_stat.UndecoratedSmoothedPWDB = -1;
 242         psta->rssi_stat.UndecoratedSmoothedCCK = -1;
 243
 244         /* init for the sequence number of received management frame */
 245         psta->RxMgmtFrameSeqNum = 0xffff;
 246
 247         return psta;
 248 }
 249
 250 /*  using pstapriv->sta_hash_lock to protect */
 251 u32 rtw_free_stainfo(struct adapter *padapter, struct sta_info *psta)
 252 {
 253         int i;
 254         struct __queue *pfree_sta_queue;
 255         struct recv_reorder_ctrl *preorder_ctrl;
 256         struct sta_xmit_priv *pstaxmitpriv;
 257         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 258         struct sta_priv *pstapriv = &padapter->stapriv;
 259
 260         if (!psta)
 261                 goto exit;
 262
 263         pfree_sta_queue = &pstapriv->free_sta_queue;
 264
 265         pstaxmitpriv = &psta->sta_xmitpriv;
 266
 267         spin_lock_bh(&pxmitpriv->lock);
 268
 269         rtw_free_xmitframe_queue(pxmitpriv, &psta->sleep_q);
 270         psta->sleepq_len = 0;
 271
 272         rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
 273
 274         list_del_init(&pstaxmitpriv->vo_q.tx_pending);
 275
 276         rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
 277
 278         list_del_init(&pstaxmitpriv->vi_q.tx_pending);
 279
 280         rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
 281
 282         list_del_init(&pstaxmitpriv->bk_q.tx_pending);
 283
 284         rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
 285
 286         list_del_init(&pstaxmitpriv->be_q.tx_pending);
 287
 288         spin_unlock_bh(&pxmitpriv->lock);
 289
 290         list_del_init(&psta->hash_list);
 291         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 292                  ("\n free number_%d stainfo with hwaddr=0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x\n",
 293                  pstapriv->asoc_sta_count, psta->hwaddr[0], psta->hwaddr[1],
 294                  psta->hwaddr[2], psta->hwaddr[3], psta->hwaddr[4],
 295                  psta->hwaddr[5]));
 296         pstapriv->asoc_sta_count--;
 297
 298         /*  re-init sta_info; 20061114 */
 299         _rtw_init_sta_xmit_priv(&psta->sta_xmitpriv);
 300         _rtw_init_sta_recv_priv(&psta->sta_recvpriv);
 301
 302         del_timer_sync(&psta->addba_retry_timer);
 303
 304         /* for A-MPDU Rx reordering buffer control, cancel
 305          * reordering_ctrl_timer
 306          */
 307         for (i = 0; i < 16; i++) {
 308                 struct list_head *phead, *plist;
 309                 struct recv_frame *prframe;
 310                 struct __queue *ppending_recvframe_queue;
 311                 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
 312
 313                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 314
 315                 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 316
 317                 ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
 318
 319                 spin_lock_bh(&ppending_recvframe_queue->lock);
 320
 321                 phead = get_list_head(ppending_recvframe_queue);
 322                 plist = phead->next;
 323
 324                 while (!list_empty(phead)) {
 325                         prframe = container_of(plist, struct recv_frame, list);
 326
 327                         plist = plist->next;
 328
 329                         list_del_init(&prframe->list);
 330
 331                         rtw_free_recvframe(prframe, pfree_recv_queue);
 332                 }
 333
 334                 spin_unlock_bh(&ppending_recvframe_queue->lock);
 335         }
 336
 337         if (!(psta->state & WIFI_AP_STATE))
 338                 rtw_hal_set_odm_var(padapter, HAL_ODM_STA_INFO, psta, false);
 339
 340 #ifdef CONFIG_88EU_AP_MODE
 341
 342         spin_lock_bh(&pstapriv->auth_list_lock);
 343         if (!list_empty(&psta->auth_list)) {
 344                 list_del_init(&psta->auth_list);
 345                 pstapriv->auth_list_cnt--;
 346         }
 347         spin_unlock_bh(&pstapriv->auth_list_lock);
 348
 349         psta->expire_to = 0;
 350
 351         psta->sleepq_ac_len = 0;
 352         psta->qos_info = 0;
 353
 354         psta->max_sp_len = 0;
 355         psta->uapsd_bk = 0;
 356         psta->uapsd_be = 0;
 357         psta->uapsd_vi = 0;
 358         psta->uapsd_vo = 0;
 359         psta->has_legacy_ac = 0;
 360
 361         pstapriv->sta_dz_bitmap &= ~BIT(psta->aid);
 362         pstapriv->tim_bitmap &= ~BIT(psta->aid);
 363
 364         if ((psta->aid > 0) && (pstapriv->sta_aid[psta->aid - 1] == psta)) {
 365                 pstapriv->sta_aid[psta->aid - 1] = NULL;
 366                 psta->aid = 0;
 367         }
 368
 369         psta->under_exist_checking = 0;
 370
 371 #endif  /*  CONFIG_88EU_AP_MODE */
 372
 373         spin_lock_bh(&pfree_sta_queue->lock);
 374         list_add_tail(&psta->list, get_list_head(pfree_sta_queue));
 375         spin_unlock_bh(&pfree_sta_queue->lock);
 376
 377 exit:
 378
 379         return _SUCCESS;
 380 }
 381
 382 /*  free all stainfo which in sta_hash[all] */
 383 void rtw_free_all_stainfo(struct adapter *padapter)
 384 {
 385         struct list_head *plist, *phead;
 386         s32 index;
 387         struct sta_info *psta = NULL;
 388         struct sta_priv *pstapriv = &padapter->stapriv;
 389         struct sta_info *pbcmc_stainfo = rtw_get_bcmc_stainfo(padapter);
 390
 391         if (pstapriv->asoc_sta_count == 1)
 392                 return;
 393
 394         spin_lock_bh(&pstapriv->sta_hash_lock);
 395
 396         for (index = 0; index < NUM_STA; index++) {
 397                 phead = &pstapriv->sta_hash[index];
 398                 plist = phead->next;
 399
 400                 while (phead != plist) {
 401                         psta = container_of(plist, struct sta_info, hash_list);
 402
 403                         plist = plist->next;
 404
 405                         if (pbcmc_stainfo != psta)
 406                                 rtw_free_stainfo(padapter, psta);
 407                 }
 408         }
 409         spin_unlock_bh(&pstapriv->sta_hash_lock);
 410 }
 411
 412 /* any station allocated can be searched by hash list */
 413 struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
 414 {
 415         struct list_head *plist, *phead;
 416         struct sta_info *psta = NULL;
 417         u32 index;
 418         u8 *addr;
 419         u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 420
 421         if (!hwaddr)
 422                 return NULL;
 423
 424         if (is_multicast_ether_addr(hwaddr))
 425                 addr = bc_addr;
 426         else
 427                 addr = hwaddr;
 428
 429         index = wifi_mac_hash(addr);
 430
 431         spin_lock_bh(&pstapriv->sta_hash_lock);
 432
 433         phead = &pstapriv->sta_hash[index];
 434         plist = phead->next;
 435
 436         while (phead != plist) {
 437                 psta = container_of(plist, struct sta_info, hash_list);
 438
 439                 if (!memcmp(psta->hwaddr, addr, ETH_ALEN)) {
 440                         /*  if found the matched address */
 441                         break;
 442                 }
 443                 psta = NULL;
 444                 plist = plist->next;
 445         }
 446
 447         spin_unlock_bh(&pstapriv->sta_hash_lock);
 448         return psta;
 449 }
 450
 451 u32 rtw_init_bcmc_stainfo(struct adapter *padapter)
 452 {
 453         struct sta_info *psta;
 454         u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 455         struct sta_priv *pstapriv = &padapter->stapriv;
 456
 457         psta = rtw_alloc_stainfo(pstapriv, bc_addr);
 458
 459         if (!psta) {
 460                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 461                          ("rtw_alloc_stainfo fail"));
 462                 return _FAIL;
 463         }
 464
 465         /*  default broadcast & multicast use macid 1 */
 466         psta->mac_id = 1;
 467
 468         return _SUCCESS;
 469 }
 470
 471 struct sta_info *rtw_get_bcmc_stainfo(struct adapter *padapter)
 472 {
 473         struct sta_priv *pstapriv = &padapter->stapriv;
 474         u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 475
 476         return rtw_get_stainfo(pstapriv, bc_addr);
 477 }
 478
 479 bool rtw_access_ctrl(struct adapter *padapter, u8 *mac_addr)
 480 {
 481         bool res = true;
 482 #ifdef CONFIG_88EU_AP_MODE
 483         struct list_head *plist, *phead;
 484         struct rtw_wlan_acl_node *paclnode;
 485         bool match = false;
 486         struct sta_priv *pstapriv = &padapter->stapriv;
 487         struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
 488         struct __queue *pacl_node_q = &pacl_list->acl_node_q;
 489
 490         spin_lock_bh(&pacl_node_q->lock);
 491         phead = get_list_head(pacl_node_q);
 492         plist = phead->next;
 493         while (phead != plist) {
 494                 paclnode = container_of(plist, struct rtw_wlan_acl_node, list);
 495                 plist = plist->next;
 496
 497                 if (!memcmp(paclnode->addr, mac_addr, ETH_ALEN)) {
 498                         if (paclnode->valid) {
 499                                 match = true;
 500                                 break;
 501                         }
 502                 }
 503         }
 504         spin_unlock_bh(&pacl_node_q->lock);
 505
 506         if (pacl_list->mode == 1)/* accept unless in deny list */
 507                 res = !match;
 508         else if (pacl_list->mode == 2)/* deny unless in accept list */
 509                 res = match;
 510         else
 511                 res = true;
 512
 513 #endif
 514
 515         return res;
 516 }