drivers/staging/rtl8723au/core/rtw_sta_mgt.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  ******************************************************************************/
  15 #define _RTW_STA_MGT_C_
  16
  17 #include <osdep_service.h>
  18 #include <drv_types.h>
  19 #include <recv_osdep.h>
  20 #include <xmit_osdep.h>
  21 #include <mlme_osdep.h>
  22 #include <sta_info.h>
  23
  24 void _rtw_init_stainfo(struct sta_info *psta)
  25 {
  26         memset((u8 *)psta, 0, sizeof (struct sta_info));
  27         spin_lock_init(&psta->lock);
  28         INIT_LIST_HEAD(&psta->list);
  29         INIT_LIST_HEAD(&psta->hash_list);
  30         _rtw_init_queue23a(&psta->sleep_q);
  31         psta->sleepq_len = 0;
  32         _rtw_init_sta_xmit_priv23a(&psta->sta_xmitpriv);
  33         _rtw_init_sta_recv_priv23a(&psta->sta_recvpriv);
  34 #ifdef CONFIG_8723AU_AP_MODE
  35         INIT_LIST_HEAD(&psta->asoc_list);
  36         INIT_LIST_HEAD(&psta->auth_list);
  37         psta->expire_to = 0;
  38         psta->flags = 0;
  39         psta->capability = 0;
  40         psta->bpairwise_key_installed = false;
  41         psta->nonerp_set = 0;
  42         psta->no_short_slot_time_set = 0;
  43         psta->no_short_preamble_set = 0;
  44         psta->no_ht_gf_set = 0;
  45         psta->no_ht_set = 0;
  46         psta->ht_20mhz_set = 0;
  47         psta->keep_alive_trycnt = 0;
  48 #endif  /*  CONFIG_8723AU_AP_MODE */
  49 }
  50
  51 u32 _rtw_init_sta_priv23a(struct sta_priv *pstapriv)
  52 {
  53         struct sta_info *psta;
  54         s32 i;
  55
  56         pstapriv->pallocated_stainfo_buf = rtw_zvmalloc(sizeof(struct sta_info) * NUM_STA+ 4);
  57
  58         if (!pstapriv->pallocated_stainfo_buf)
  59                 return _FAIL;
  60
  61         pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 -
  62                 ((unsigned long)(pstapriv->pallocated_stainfo_buf) & 3);
  63         _rtw_init_queue23a(&pstapriv->free_sta_queue);
  64         spin_lock_init(&pstapriv->sta_hash_lock);
  65         pstapriv->asoc_sta_count = 0;
  66         _rtw_init_queue23a(&pstapriv->sleep_q);
  67         _rtw_init_queue23a(&pstapriv->wakeup_q);
  68         psta = (struct sta_info *)(pstapriv->pstainfo_buf);
  69
  70         for (i = 0; i < NUM_STA; i++) {
  71                 _rtw_init_stainfo(psta);
  72                 INIT_LIST_HEAD(&pstapriv->sta_hash[i]);
  73                 list_add_tail(&psta->list, get_list_head(&pstapriv->free_sta_queue));
  74                 psta++;
  75         }
  76 #ifdef CONFIG_8723AU_AP_MODE
  77         pstapriv->sta_dz_bitmap = 0;
  78         pstapriv->tim_bitmap = 0;
  79         INIT_LIST_HEAD(&pstapriv->asoc_list);
  80         INIT_LIST_HEAD(&pstapriv->auth_list);
  81         spin_lock_init(&pstapriv->asoc_list_lock);
  82         spin_lock_init(&pstapriv->auth_list_lock);
  83         pstapriv->asoc_list_cnt = 0;
  84         pstapriv->auth_list_cnt = 0;
  85         pstapriv->auth_to = 3; /*  3*2 = 6 sec */
  86         pstapriv->assoc_to = 3;
  87         /* pstapriv->expire_to = 900;  900*2 = 1800 sec = 30 min, expire after no any traffic. */
  88         /* pstapriv->expire_to = 30;  30*2 = 60 sec = 1 min, expire after no any traffic. */
  89         pstapriv->expire_to = 3; /*  3*2 = 6 sec */
  90         pstapriv->max_num_sta = NUM_STA;
  91 #endif
  92         return _SUCCESS;
  93 }
  94
  95 inline int rtw_stainfo_offset23a(struct sta_priv *stapriv, struct sta_info *sta)
  96 {
  97         int offset = (((u8 *)sta) - stapriv->pstainfo_buf)/sizeof(struct sta_info);
  98
  99         if (!stainfo_offset_valid(offset))
 100                 DBG_8723A("%s invalid offset(%d), out of range!!!", __func__, offset);
 101         return offset;
 102 }
 103
 104 inline struct sta_info *rtw_get_stainfo23a_by_offset23a(struct sta_priv *stapriv, int offset)
 105 {
 106         if (!stainfo_offset_valid(offset))
 107                 DBG_8723A("%s invalid offset(%d), out of range!!!", __func__, offset);
 108         return (struct sta_info *)(stapriv->pstainfo_buf + offset * sizeof(struct sta_info));
 109 }
 110
 111 /*  this function is used to free the memory of lock || sema for all stainfos */
 112 void rtw_mfree_all_stainfo(struct sta_priv *pstapriv)
 113 {
 114         struct list_head *plist, *phead;
 115         struct sta_info *psta;
 116
 117         spin_lock_bh(&pstapriv->sta_hash_lock);
 118
 119         phead = get_list_head(&pstapriv->free_sta_queue);
 120
 121         /* we really achieve a lot in this loop .... */
 122         list_for_each(plist, phead)
 123                 psta = container_of(plist, struct sta_info, list);
 124         spin_unlock_bh(&pstapriv->sta_hash_lock);
 125 }
 126
 127 void rtw_mfree_sta_priv_lock(struct     sta_priv *pstapriv)
 128 {
 129         rtw_mfree_all_stainfo(pstapriv); /* be done before free sta_hash_lock */
 130 }
 131
 132 u32     _rtw_free_sta_priv23a(struct    sta_priv *pstapriv)
 133 {
 134         struct list_head *phead, *plist, *ptmp;
 135         struct sta_info *psta;
 136         struct recv_reorder_ctrl *preorder_ctrl;
 137         int     index;
 138
 139         if (pstapriv) {
 140                 /*      delete all reordering_ctrl_timer                */
 141                 spin_lock_bh(&pstapriv->sta_hash_lock);
 142                 for (index = 0; index < NUM_STA; index++) {
 143                         phead = &pstapriv->sta_hash[index];
 144
 145                         list_for_each_safe(plist, ptmp, phead) {
 146                                 int i;
 147                                 psta = container_of(plist, struct sta_info,
 148                                                     hash_list);
 149                                 for (i = 0; i < 16 ; i++) {
 150                                         preorder_ctrl = &psta->recvreorder_ctrl[i];
 151                                         del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 152                                 }
 153                         }
 154                 }
 155                 spin_unlock_bh(&pstapriv->sta_hash_lock);
 156                 /*===============================*/
 157
 158                 rtw_mfree_sta_priv_lock(pstapriv);
 159
 160                 if (pstapriv->pallocated_stainfo_buf)
 161                         rtw_vmfree(pstapriv->pallocated_stainfo_buf, sizeof(struct sta_info)*NUM_STA+4);
 162         }
 163         return _SUCCESS;
 164 }
 165
 166 struct  sta_info *rtw_alloc_stainfo23a(struct sta_priv *pstapriv, u8 *hwaddr)
 167 {
 168         struct list_head        *phash_list;
 169         struct sta_info *psta;
 170         struct rtw_queue *pfree_sta_queue;
 171         struct recv_reorder_ctrl *preorder_ctrl;
 172         uint tmp_aid;
 173         s32     index;
 174         int i = 0;
 175         u16  wRxSeqInitialValue = 0xffff;
 176
 177         pfree_sta_queue = &pstapriv->free_sta_queue;
 178
 179         spin_lock_bh(&pstapriv->sta_hash_lock);
 180
 181         if (_rtw_queue_empty23a(pfree_sta_queue)) {
 182                 spin_unlock_bh(&pstapriv->sta_hash_lock);
 183                 return NULL;
 184         }
 185         psta = container_of((&pfree_sta_queue->queue)->next, struct sta_info, list);
 186
 187         list_del_init(&psta->list);
 188
 189         tmp_aid = psta->aid;
 190
 191         _rtw_init_stainfo(psta);
 192
 193         psta->padapter = pstapriv->padapter;
 194
 195         memcpy(psta->hwaddr, hwaddr, ETH_ALEN);
 196
 197         index = wifi_mac_hash(hwaddr);
 198
 199         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 200                  ("rtw_alloc_stainfo23a: index  = %x", index));
 201         if (index >= NUM_STA) {
 202                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 203                          ("ERROR => rtw_alloc_stainfo23a: index >= NUM_STA"));
 204                 psta = NULL;
 205                 goto exit;
 206         }
 207         phash_list = &pstapriv->sta_hash[index];
 208
 209         list_add_tail(&psta->hash_list, phash_list);
 210
 211         pstapriv->asoc_sta_count ++ ;
 212
 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         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 221                  ("alloc number_%d stainfo  with hwaddr = %pM\n",
 222                  pstapriv->asoc_sta_count, hwaddr));
 223
 224         init_addba_retry_timer23a(psta);
 225
 226         /* for A-MPDU Rx reordering buffer control */
 227         for (i = 0; i < 16; i++) {
 228                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 229
 230                 preorder_ctrl->padapter = pstapriv->padapter;
 231
 232                 preorder_ctrl->enable = false;
 233
 234                 preorder_ctrl->indicate_seq = 0xffff;
 235                 preorder_ctrl->wend_b = 0xffff;
 236                 /* preorder_ctrl->wsize_b = (NR_RECVBUFF-2); */
 237                 preorder_ctrl->wsize_b = 64;/* 64; */
 238
 239                 _rtw_init_queue23a(&preorder_ctrl->pending_recvframe_queue);
 240
 241                 rtw_init_recv_timer23a(preorder_ctrl);
 242         }
 243         /* init for DM */
 244         psta->rssi_stat.UndecoratedSmoothedPWDB = (-1);
 245         psta->rssi_stat.UndecoratedSmoothedCCK = (-1);
 246
 247         /* init for the sequence number of received management frame */
 248         psta->RxMgmtFrameSeqNum = 0xffff;
 249 exit:
 250         spin_unlock_bh(&pstapriv->sta_hash_lock);
 251         return psta;
 252 }
 253
 254 /*  using pstapriv->sta_hash_lock to protect */
 255 u32     rtw_free_stainfo23a(struct rtw_adapter *padapter, struct sta_info *psta)
 256 {
 257         struct rtw_queue *pfree_sta_queue;
 258         struct recv_reorder_ctrl *preorder_ctrl;
 259         struct  sta_xmit_priv   *pstaxmitpriv;
 260         struct  xmit_priv       *pxmitpriv = &padapter->xmitpriv;
 261         struct  sta_priv *pstapriv = &padapter->stapriv;
 262         struct hw_xmit *phwxmit;
 263         int i;
 264
 265         if (psta == NULL)
 266                 goto exit;
 267
 268         spin_lock_bh(&psta->lock);
 269         psta->state &= ~_FW_LINKED;
 270         spin_unlock_bh(&psta->lock);
 271
 272         pfree_sta_queue = &pstapriv->free_sta_queue;
 273
 274         pstaxmitpriv = &psta->sta_xmitpriv;
 275
 276         spin_lock_bh(&pxmitpriv->lock);
 277
 278         rtw_free_xmitframe_queue23a(pxmitpriv, &psta->sleep_q);
 279         psta->sleepq_len = 0;
 280
 281         /* vo */
 282         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
 283         list_del_init(&pstaxmitpriv->vo_q.tx_pending);
 284         phwxmit = pxmitpriv->hwxmits;
 285         phwxmit->accnt -= pstaxmitpriv->vo_q.qcnt;
 286         pstaxmitpriv->vo_q.qcnt = 0;
 287
 288         /* vi */
 289         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
 290         list_del_init(&pstaxmitpriv->vi_q.tx_pending);
 291         phwxmit = pxmitpriv->hwxmits+1;
 292         phwxmit->accnt -= pstaxmitpriv->vi_q.qcnt;
 293         pstaxmitpriv->vi_q.qcnt = 0;
 294
 295         /* be */
 296         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
 297         list_del_init(&pstaxmitpriv->be_q.tx_pending);
 298         phwxmit = pxmitpriv->hwxmits+2;
 299         phwxmit->accnt -= pstaxmitpriv->be_q.qcnt;
 300         pstaxmitpriv->be_q.qcnt = 0;
 301
 302         /* bk */
 303         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
 304         list_del_init(&pstaxmitpriv->bk_q.tx_pending);
 305         phwxmit = pxmitpriv->hwxmits+3;
 306         phwxmit->accnt -= pstaxmitpriv->bk_q.qcnt;
 307         pstaxmitpriv->bk_q.qcnt = 0;
 308
 309         spin_unlock_bh(&pxmitpriv->lock);
 310
 311         list_del_init(&psta->hash_list);
 312         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_, ("\n free number_%d stainfo  with hwaddr = 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x \n", pstapriv->asoc_sta_count, psta->hwaddr[0], psta->hwaddr[1], psta->hwaddr[2], psta->hwaddr[3], psta->hwaddr[4], psta->hwaddr[5]));
 313         pstapriv->asoc_sta_count --;
 314
 315         /*  re-init sta_info; 20061114  will be init in alloc_stainfo */
 316         /* _rtw_init_sta_xmit_priv23a(&psta->sta_xmitpriv); */
 317         /* _rtw_init_sta_recv_priv23a(&psta->sta_recvpriv); */
 318
 319         del_timer_sync(&psta->addba_retry_timer);
 320
 321         /* for A-MPDU Rx reordering buffer control, cancel reordering_ctrl_timer */
 322         for (i = 0; i < 16; i++) {
 323                 struct list_head        *phead, *plist;
 324                 struct recv_frame *prframe;
 325                 struct rtw_queue *ppending_recvframe_queue;
 326                 struct rtw_queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
 327
 328                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 329
 330                 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 331
 332                 ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
 333
 334                 spin_lock_bh(&ppending_recvframe_queue->lock);
 335                 phead =         get_list_head(ppending_recvframe_queue);
 336                 plist = phead->next;
 337
 338                 while (!list_empty(phead)) {
 339                         prframe = container_of(plist, struct recv_frame, list);
 340                         plist = plist->next;
 341                         list_del_init(&prframe->list);
 342                         rtw_free_recvframe23a(prframe, pfree_recv_queue);
 343                 }
 344                 spin_unlock_bh(&ppending_recvframe_queue->lock);
 345         }
 346         if (!(psta->state & WIFI_AP_STATE))
 347                 rtw_hal_set_odm_var23a(padapter, HAL_ODM_STA_INFO, psta, false);
 348 #ifdef CONFIG_8723AU_AP_MODE
 349         spin_lock_bh(&pstapriv->auth_list_lock);
 350         if (!list_empty(&psta->auth_list)) {
 351                 list_del_init(&psta->auth_list);
 352                 pstapriv->auth_list_cnt--;
 353         }
 354         spin_unlock_bh(&pstapriv->auth_list_lock);
 355
 356         psta->expire_to = 0;
 357
 358         psta->sleepq_ac_len = 0;
 359         psta->qos_info = 0;
 360
 361         psta->max_sp_len = 0;
 362         psta->uapsd_bk = 0;
 363         psta->uapsd_be = 0;
 364         psta->uapsd_vi = 0;
 365         psta->uapsd_vo = 0;
 366
 367         psta->has_legacy_ac = 0;
 368
 369         pstapriv->sta_dz_bitmap &= ~CHKBIT(psta->aid);
 370         pstapriv->tim_bitmap &= ~CHKBIT(psta->aid);
 371
 372         if ((psta->aid >0) && (pstapriv->sta_aid[psta->aid - 1] == psta)) {
 373                 pstapriv->sta_aid[psta->aid - 1] = NULL;
 374                 psta->aid = 0;
 375         }
 376 #endif  /*  CONFIG_8723AU_AP_MODE */
 377         list_add_tail(&psta->list, get_list_head(pfree_sta_queue));
 378 exit:
 379         return _SUCCESS;
 380 }
 381
 382 /*  free all stainfo which in sta_hash[all] */
 383 void rtw_free_all_stainfo23a(struct rtw_adapter *padapter)
 384 {
 385         struct list_head *plist, *phead, *ptmp;
 386         struct sta_info *psta;
 387         struct  sta_priv *pstapriv = &padapter->stapriv;
 388         struct sta_info* pbcmc_stainfo = rtw_get_bcmc_stainfo23a(padapter);
 389         s32     index;  if (pstapriv->asoc_sta_count == 1)
 390                 return;
 391
 392         spin_lock_bh(&pstapriv->sta_hash_lock);
 393
 394         for (index = 0; index < NUM_STA; index++) {
 395                 phead = &pstapriv->sta_hash[index];
 396
 397                 list_for_each_safe(plist, ptmp, phead) {
 398                         psta = container_of(plist, struct sta_info, hash_list);
 399
 400                         if (pbcmc_stainfo!= psta)
 401                                 rtw_free_stainfo23a(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_stainfo23a(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 == NULL)
 417                 return NULL;
 418
 419         if (is_multicast_ether_addr(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
 430         list_for_each(plist, phead) {
 431                 psta = container_of(plist, struct sta_info, hash_list);
 432
 433                 if (!memcmp(psta->hwaddr, addr, ETH_ALEN)) {
 434                         /*  if found the matched address */
 435                         break;
 436                 }
 437                 psta = NULL;
 438         }
 439         spin_unlock_bh(&pstapriv->sta_hash_lock);
 440         return psta;
 441 }
 442
 443 u32 rtw_init_bcmc_stainfo23a(struct rtw_adapter* padapter)
 444 {
 445         struct  sta_priv *pstapriv = &padapter->stapriv;
 446         struct sta_info         *psta;
 447         struct tx_servq *ptxservq;
 448         u32 res = _SUCCESS;
 449         unsigned char bcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 450
 451         psta = rtw_alloc_stainfo23a(pstapriv, bcast_addr);
 452         if (psta == NULL) {
 453                 res = _FAIL;
 454                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 455                          ("rtw_alloc_stainfo23a fail"));
 456                 return res;
 457         }
 458         /*  default broadcast & multicast use macid 1 */
 459         psta->mac_id = 1;
 460
 461         ptxservq = &psta->sta_xmitpriv.be_q;
 462         return _SUCCESS;
 463 }
 464
 465 struct sta_info *rtw_get_bcmc_stainfo23a(struct rtw_adapter *padapter)
 466 {
 467         struct sta_info         *psta;
 468         struct sta_priv         *pstapriv = &padapter->stapriv;
 469         u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 470
 471          psta = rtw_get_stainfo23a(pstapriv, bc_addr);
 472         return psta;
 473 }
 474
 475 u8 rtw_access_ctrl23a(struct rtw_adapter *padapter, u8 *mac_addr)
 476 {
 477         u8 res = true;
 478 #ifdef CONFIG_8723AU_AP_MODE
 479         struct list_head *plist, *phead;
 480         struct rtw_wlan_acl_node *paclnode;
 481         u8 match = false;
 482         struct sta_priv *pstapriv = &padapter->stapriv;
 483         struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
 484         struct rtw_queue *pacl_node_q = &pacl_list->acl_node_q;
 485
 486         spin_lock_bh(&pacl_node_q->lock);
 487         phead = get_list_head(pacl_node_q);
 488
 489         list_for_each(plist, phead) {
 490                 paclnode = container_of(plist, struct rtw_wlan_acl_node, list);
 491
 492                 if (!memcmp(paclnode->addr, mac_addr, ETH_ALEN)) {
 493                         if (paclnode->valid) {
 494                                 match = true;
 495                                 break;
 496                         }
 497                 }
 498         }
 499         spin_unlock_bh(&pacl_node_q->lock);
 500
 501         if (pacl_list->mode == 1)/* accept unless in deny list */
 502                 res = (match) ?  false : true;
 503         else if (pacl_list->mode == 2)/* deny unless in accept list */
 504                 res = (match) ?  true : false;
 505         else
 506                  res = true;
 507 #endif
 508         return res;
 509 }