drivers/staging/r8188eu/core/rtw_sta_mgt.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2007 - 2011 Realtek Corporation. */
   3
   4 #define _RTW_STA_MGT_C_
   5
   6 #include "../include/osdep_service.h"
   7 #include "../include/drv_types.h"
   8 #include "../include/recv_osdep.h"
   9 #include "../include/xmit_osdep.h"
  10 #include "../include/mlme_osdep.h"
  11 #include "../include/sta_info.h"
  12
  13 static void _rtw_init_stainfo(struct sta_info *psta)
  14 {
  15
  16         memset((u8 *)psta, 0, sizeof (struct sta_info));
  17
  18          spin_lock_init(&psta->lock);
  19         INIT_LIST_HEAD(&psta->list);
  20         INIT_LIST_HEAD(&psta->hash_list);
  21         _rtw_init_queue(&psta->sleep_q);
  22         psta->sleepq_len = 0;
  23
  24         _rtw_init_sta_xmit_priv(&psta->sta_xmitpriv);
  25         _rtw_init_sta_recv_priv(&psta->sta_recvpriv);
  26
  27 #ifdef CONFIG_88EU_AP_MODE
  28
  29         INIT_LIST_HEAD(&psta->asoc_list);
  30
  31         INIT_LIST_HEAD(&psta->auth_list);
  32
  33         psta->expire_to = 0;
  34
  35         psta->flags = 0;
  36
  37         psta->capability = 0;
  38
  39         psta->bpairwise_key_installed = false;
  40
  41 #ifdef CONFIG_88EU_AP_MODE
  42         psta->nonerp_set = 0;
  43         psta->no_short_slot_time_set = 0;
  44         psta->no_short_preamble_set = 0;
  45         psta->no_ht_gf_set = 0;
  46         psta->no_ht_set = 0;
  47         psta->ht_20mhz_set = 0;
  48 #endif
  49
  50         psta->under_exist_checking = 0;
  51
  52         psta->keep_alive_trycnt = 0;
  53
  54 #endif  /*  CONFIG_88EU_AP_MODE */
  55
  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 = rtw_zvmalloc(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, get_list_head(&pstapriv->free_sta_queue));
  87
  88                 psta++;
  89         }
  90
  91 #ifdef CONFIG_88EU_AP_MODE
  92
  93         pstapriv->sta_dz_bitmap = 0;
  94         pstapriv->tim_bitmap = 0;
  95
  96         INIT_LIST_HEAD(&pstapriv->asoc_list);
  97         INIT_LIST_HEAD(&pstapriv->auth_list);
  98         spin_lock_init(&pstapriv->asoc_list_lock);
  99         spin_lock_init(&pstapriv->auth_list_lock);
 100         pstapriv->asoc_list_cnt = 0;
 101         pstapriv->auth_list_cnt = 0;
 102
 103         pstapriv->auth_to = 3; /*  3*2 = 6 sec */
 104         pstapriv->assoc_to = 3;
 105         pstapriv->expire_to = 3; /*  3*2 = 6 sec */
 106         pstapriv->max_num_sta = NUM_STA;
 107 #endif
 108
 109         return _SUCCESS;
 110 }
 111
 112 inline int rtw_stainfo_offset(struct sta_priv *stapriv, struct sta_info *sta)
 113 {
 114         int offset = (((u8 *)sta) - stapriv->pstainfo_buf)/sizeof(struct sta_info);
 115
 116         if (!stainfo_offset_valid(offset))
 117                 DBG_88E("%s invalid offset(%d), out of range!!!", __func__, offset);
 118
 119         return offset;
 120 }
 121
 122 inline struct sta_info *rtw_get_stainfo_by_offset(struct sta_priv *stapriv, int offset)
 123 {
 124         if (!stainfo_offset_valid(offset))
 125                 DBG_88E("%s invalid offset(%d), out of range!!!", __func__, offset);
 126
 127         return (struct sta_info *)(stapriv->pstainfo_buf + offset * sizeof(struct sta_info));
 128 }
 129
 130 static void rtw_mfree_sta_priv_lock(struct sta_priv *pstapriv)
 131 {
 132 #ifdef CONFIG_88EU_AP_MODE
 133         struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
 134 #endif
 135 }
 136
 137 u32     _rtw_free_sta_priv(struct       sta_priv *pstapriv)
 138 {
 139         struct list_head *phead, *plist;
 140         struct sta_info *psta = NULL;
 141         struct recv_reorder_ctrl *preorder_ctrl;
 142         int     index;
 143
 144         if (pstapriv) {
 145                 /*      delete all reordering_ctrl_timer                */
 146                 spin_lock_bh(&pstapriv->sta_hash_lock);
 147                 for (index = 0; index < NUM_STA; index++) {
 148                         phead = &pstapriv->sta_hash[index];
 149                         plist = phead->next;
 150
 151                         while (phead != plist) {
 152                                 int i;
 153                                 psta = container_of(plist, struct sta_info, hash_list);
 154                                 plist = plist->next;
 155
 156                                 for (i = 0; i < 16; i++) {
 157                                         preorder_ctrl = &psta->recvreorder_ctrl[i];
 158                                         _cancel_timer_ex(&preorder_ctrl->reordering_ctrl_timer);
 159                                 }
 160                         }
 161                 }
 162                 spin_unlock_bh(&pstapriv->sta_hash_lock);
 163                 /*===============================*/
 164
 165                 rtw_mfree_sta_priv_lock(pstapriv);
 166
 167                 if (pstapriv->pallocated_stainfo_buf)
 168                         vfree(pstapriv->pallocated_stainfo_buf);
 169                 }
 170
 171         return _SUCCESS;
 172 }
 173
 174 struct  sta_info *rtw_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
 175 {
 176         s32     index;
 177         struct list_head *phash_list;
 178         struct sta_info *psta;
 179         struct __queue *pfree_sta_queue;
 180         struct recv_reorder_ctrl *preorder_ctrl;
 181         int i = 0;
 182         u16  wRxSeqInitialValue = 0xffff;
 183
 184         pfree_sta_queue = &pstapriv->free_sta_queue;
 185
 186         spin_lock_bh(&pfree_sta_queue->lock);
 187
 188         if (list_empty(&pfree_sta_queue->queue)) {
 189                 spin_unlock_bh(&pfree_sta_queue->lock);
 190                 psta = NULL;
 191         } else {
 192                 psta = container_of((&pfree_sta_queue->queue)->next, struct sta_info, list);
 193                 list_del_init(&psta->list);
 194                 spin_unlock_bh(&pfree_sta_queue->lock);
 195                 _rtw_init_stainfo(psta);
 196                 memcpy(psta->hwaddr, hwaddr, ETH_ALEN);
 197                 index = wifi_mac_hash(hwaddr);
 198                 if (index >= NUM_STA) {
 199                         psta = NULL;
 200                         goto exit;
 201                 }
 202                 phash_list = &pstapriv->sta_hash[index];
 203
 204                 spin_lock_bh(&pstapriv->sta_hash_lock);
 205
 206                 list_add_tail(&psta->hash_list, phash_list);
 207
 208                 pstapriv->asoc_sta_count++ ;
 209
 210                 spin_unlock_bh(&pstapriv->sta_hash_lock);
 211
 212 /*  Commented by Albert 2009/08/13 */
 213 /*  For the SMC router, the sequence number of first packet of WPS handshake will be 0. */
 214 /*  In this case, this packet will be dropped by recv_decache function if we use the 0x00 as the default value for tid_rxseq variable. */
 215 /*  So, we initialize the tid_rxseq variable as the 0xffff. */
 216
 217                 for (i = 0; i < 16; i++)
 218                         memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i], &wRxSeqInitialValue, 2);
 219
 220                 init_addba_retry_timer(pstapriv->padapter, psta);
 221
 222                 /* for A-MPDU Rx reordering buffer control */
 223                 for (i = 0; i < 16; i++) {
 224                         preorder_ctrl = &psta->recvreorder_ctrl[i];
 225
 226                         preorder_ctrl->padapter = pstapriv->padapter;
 227
 228                         preorder_ctrl->enable = false;
 229
 230                         preorder_ctrl->indicate_seq = 0xffff;
 231                         preorder_ctrl->wend_b = 0xffff;
 232                         preorder_ctrl->wsize_b = 64;/* 64; */
 233
 234                         _rtw_init_queue(&preorder_ctrl->pending_recvframe_queue);
 235
 236                         rtw_init_recv_timer(preorder_ctrl);
 237                 }
 238
 239                 /* init for DM */
 240                 psta->rssi_stat.UndecoratedSmoothedPWDB = (-1);
 241                 psta->rssi_stat.UndecoratedSmoothedCCK = (-1);
 242
 243                 /* init for the sequence number of received management frame */
 244                 psta->RxMgmtFrameSeqNum = 0xffff;
 245         }
 246
 247 exit:
 248
 249         return psta;
 250 }
 251
 252 /*  using pstapriv->sta_hash_lock to protect */
 253 u32     rtw_free_stainfo(struct adapter *padapter, struct sta_info *psta)
 254 {
 255         int i;
 256         struct __queue *pfree_sta_queue;
 257         struct recv_reorder_ctrl *preorder_ctrl;
 258         struct  sta_xmit_priv   *pstaxmitpriv;
 259         struct  xmit_priv       *pxmitpriv = &padapter->xmitpriv;
 260         struct  sta_priv *pstapriv = &padapter->stapriv;
 261
 262         if (!psta)
 263                 goto exit;
 264
 265         pfree_sta_queue = &pstapriv->free_sta_queue;
 266
 267         pstaxmitpriv = &psta->sta_xmitpriv;
 268
 269         spin_lock_bh(&pxmitpriv->lock);
 270
 271         rtw_free_xmitframe_queue(pxmitpriv, &psta->sleep_q);
 272         psta->sleepq_len = 0;
 273
 274         rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
 275
 276         list_del_init(&pstaxmitpriv->vo_q.tx_pending);
 277
 278         rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
 279
 280         list_del_init(&pstaxmitpriv->vi_q.tx_pending);
 281
 282         rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
 283
 284         list_del_init(&pstaxmitpriv->bk_q.tx_pending);
 285
 286         rtw_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
 287
 288         list_del_init(&pstaxmitpriv->be_q.tx_pending);
 289
 290         spin_unlock_bh(&pxmitpriv->lock);
 291
 292         list_del_init(&psta->hash_list);
 293         pstapriv->asoc_sta_count--;
 294
 295         /*  re-init sta_info; 20061114 */
 296         _rtw_init_sta_xmit_priv(&psta->sta_xmitpriv);
 297         _rtw_init_sta_recv_priv(&psta->sta_recvpriv);
 298
 299         _cancel_timer_ex(&psta->addba_retry_timer);
 300
 301         /* for A-MPDU Rx reordering buffer control, cancel reordering_ctrl_timer */
 302         for (i = 0; i < 16 ; i++) {
 303                 struct list_head *phead, *plist;
 304                 struct recv_frame *prframe;
 305                 struct __queue *ppending_recvframe_queue;
 306                 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
 307
 308                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 309
 310                 _cancel_timer_ex(&preorder_ctrl->reordering_ctrl_timer);
 311
 312                 ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
 313
 314                 spin_lock_bh(&ppending_recvframe_queue->lock);
 315
 316                 phead =         get_list_head(ppending_recvframe_queue);
 317                 plist = phead->next;
 318
 319                 while (!list_empty(phead)) {
 320                         prframe = container_of(plist, struct recv_frame, list);
 321
 322                         plist = plist->next;
 323
 324                         list_del_init(&prframe->list);
 325
 326                         rtw_free_recvframe(prframe, pfree_recv_queue);
 327                 }
 328
 329                 spin_unlock_bh(&ppending_recvframe_queue->lock);
 330         }
 331
 332         if (!(psta->state & WIFI_AP_STATE))
 333                 rtw_hal_set_odm_var(padapter, HAL_ODM_STA_INFO, psta, false);
 334
 335 #ifdef CONFIG_88EU_AP_MODE
 336
 337         spin_lock_bh(&pstapriv->auth_list_lock);
 338         if (!list_empty(&psta->auth_list)) {
 339                 list_del_init(&psta->auth_list);
 340                 pstapriv->auth_list_cnt--;
 341         }
 342         spin_unlock_bh(&pstapriv->auth_list_lock);
 343
 344         psta->expire_to = 0;
 345
 346         psta->sleepq_ac_len = 0;
 347         psta->qos_info = 0;
 348
 349         psta->max_sp_len = 0;
 350         psta->uapsd_bk = 0;
 351         psta->uapsd_be = 0;
 352         psta->uapsd_vi = 0;
 353         psta->uapsd_vo = 0;
 354         psta->has_legacy_ac = 0;
 355
 356         pstapriv->sta_dz_bitmap &= ~BIT(psta->aid);
 357         pstapriv->tim_bitmap &= ~BIT(psta->aid);
 358
 359         if ((psta->aid > 0) && (pstapriv->sta_aid[psta->aid - 1] == psta)) {
 360                 pstapriv->sta_aid[psta->aid - 1] = NULL;
 361                 psta->aid = 0;
 362         }
 363
 364         psta->under_exist_checking = 0;
 365
 366 #endif  /*  CONFIG_88EU_AP_MODE */
 367
 368         spin_lock_bh(&pfree_sta_queue->lock);
 369         list_add_tail(&psta->list, get_list_head(pfree_sta_queue));
 370         spin_unlock_bh(&pfree_sta_queue->lock);
 371
 372 exit:
 373
 374         return _SUCCESS;
 375 }
 376
 377 /*  free all stainfo which in sta_hash[all] */
 378 void rtw_free_all_stainfo(struct adapter *padapter)
 379 {
 380         struct list_head *plist, *phead;
 381         s32     index;
 382         struct sta_info *psta = NULL;
 383         struct  sta_priv *pstapriv = &padapter->stapriv;
 384         struct sta_info *pbcmc_stainfo = rtw_get_bcmc_stainfo(padapter);
 385
 386         if (pstapriv->asoc_sta_count == 1)
 387                 return;
 388
 389         spin_lock_bh(&pstapriv->sta_hash_lock);
 390
 391         for (index = 0; index < NUM_STA; index++) {
 392                 phead = &pstapriv->sta_hash[index];
 393                 plist = phead->next;
 394
 395                 while (phead != plist) {
 396                         psta = container_of(plist, struct sta_info, hash_list);
 397
 398                         plist = plist->next;
 399
 400                         if (pbcmc_stainfo != psta)
 401                                 rtw_free_stainfo(padapter, psta);
 402                 }
 403         }
 404         spin_unlock_bh(&pstapriv->sta_hash_lock);
 405 }
 406
 407 /* any station allocated can be searched by hash list */
 408 struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
 409 {
 410         struct list_head *plist, *phead;
 411         struct sta_info *psta = NULL;
 412         u32     index;
 413         u8 *addr;
 414         u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 415
 416         if (!hwaddr)
 417                 return NULL;
 418
 419         if (IS_MCAST(hwaddr))
 420                 addr = bc_addr;
 421         else
 422                 addr = hwaddr;
 423
 424         index = wifi_mac_hash(addr);
 425
 426         spin_lock_bh(&pstapriv->sta_hash_lock);
 427
 428         phead = &pstapriv->sta_hash[index];
 429         plist = phead->next;
 430
 431         while (phead != plist) {
 432                 psta = container_of(plist, struct sta_info, hash_list);
 433
 434                 if ((!memcmp(psta->hwaddr, addr, ETH_ALEN))) {
 435                         /*  if found the matched address */
 436                         break;
 437                 }
 438                 psta = NULL;
 439                 plist = plist->next;
 440         }
 441
 442         spin_unlock_bh(&pstapriv->sta_hash_lock);
 443
 444         return psta;
 445 }
 446
 447 u32 rtw_init_bcmc_stainfo(struct adapter *padapter)
 448 {
 449         struct sta_info         *psta;
 450         u32 res = _SUCCESS;
 451         unsigned char bcast_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 452         struct  sta_priv *pstapriv = &padapter->stapriv;
 453
 454         psta = rtw_alloc_stainfo(pstapriv, bcast_addr);
 455
 456         if (!psta) {
 457                 res = _FAIL;
 458                 goto exit;
 459         }
 460
 461         /*  default broadcast & multicast use macid 1 */
 462         psta->mac_id = 1;
 463
 464 exit:
 465
 466         return res;
 467 }
 468
 469 struct sta_info *rtw_get_bcmc_stainfo(struct adapter *padapter)
 470 {
 471         struct sta_info         *psta;
 472         struct sta_priv         *pstapriv = &padapter->stapriv;
 473         u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 474
 475          psta = rtw_get_stainfo(pstapriv, bc_addr);
 476
 477         return psta;
 478 }
 479
 480 u8 rtw_access_ctrl(struct adapter *padapter, u8 *mac_addr)
 481 {
 482         u8 res = true;
 483 #ifdef CONFIG_88EU_AP_MODE
 484         struct list_head *plist, *phead;
 485         struct rtw_wlan_acl_node *paclnode;
 486         u8 match = false;
 487         struct sta_priv *pstapriv = &padapter->stapriv;
 488         struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
 489         struct __queue *pacl_node_q = &pacl_list->acl_node_q;
 490
 491         spin_lock_bh(&pacl_node_q->lock);
 492         phead = get_list_head(pacl_node_q);
 493         plist = phead->next;
 494         while (phead != plist) {
 495                 paclnode = container_of(plist, struct rtw_wlan_acl_node, list);
 496                 plist = plist->next;
 497
 498                 if (!memcmp(paclnode->addr, mac_addr, ETH_ALEN)) {
 499                         if (paclnode->valid) {
 500                                 match = true;
 501                                 break;
 502                         }
 503                 }
 504         }
 505         spin_unlock_bh(&pacl_node_q->lock);
 506
 507         if (pacl_list->mode == 1)/* accept unless in deny list */
 508                 res = (match) ? false : true;
 509         else if (pacl_list->mode == 2)/* deny unless in accept list */
 510                 res = (match) ? true : false;
 511         else
 512                  res = true;
 513
 514 #endif
 515
 516         return res;
 517 }