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 #include <rtl8723a_hal.h>
  24
  25 static u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
  26
  27 static void _rtw_init_stainfo(struct sta_info *psta)
  28 {
  29         memset((u8 *)psta, 0, sizeof (struct sta_info));
  30         spin_lock_init(&psta->lock);
  31         INIT_LIST_HEAD(&psta->list);
  32         INIT_LIST_HEAD(&psta->hash_list);
  33         _rtw_init_queue23a(&psta->sleep_q);
  34         psta->sleepq_len = 0;
  35         _rtw_init_sta_xmit_priv23a(&psta->sta_xmitpriv);
  36         _rtw_init_sta_recv_priv23a(&psta->sta_recvpriv);
  37 #ifdef CONFIG_8723AU_AP_MODE
  38         INIT_LIST_HEAD(&psta->asoc_list);
  39         INIT_LIST_HEAD(&psta->auth_list);
  40         psta->expire_to = 0;
  41         psta->flags = 0;
  42         psta->capability = 0;
  43         psta->bpairwise_key_installed = false;
  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         psta->keep_alive_trycnt = 0;
  51 #endif  /*  CONFIG_8723AU_AP_MODE */
  52 }
  53
  54 int _rtw_init_sta_priv23a(struct sta_priv *pstapriv)
  55 {
  56         int i;
  57
  58         spin_lock_init(&pstapriv->sta_hash_lock);
  59         pstapriv->asoc_sta_count = 0;
  60         for (i = 0; i < NUM_STA; i++)
  61                 INIT_LIST_HEAD(&pstapriv->sta_hash[i]);
  62
  63 #ifdef CONFIG_8723AU_AP_MODE
  64         pstapriv->sta_dz_bitmap = 0;
  65         pstapriv->tim_bitmap = 0;
  66         INIT_LIST_HEAD(&pstapriv->asoc_list);
  67         INIT_LIST_HEAD(&pstapriv->auth_list);
  68         spin_lock_init(&pstapriv->asoc_list_lock);
  69         spin_lock_init(&pstapriv->auth_list_lock);
  70         pstapriv->asoc_list_cnt = 0;
  71         pstapriv->auth_list_cnt = 0;
  72         pstapriv->auth_to = 3; /*  3*2 = 6 sec */
  73         pstapriv->assoc_to = 3;
  74         /* pstapriv->expire_to = 900;  900*2 = 1800 sec = 30 min, expire after no any traffic. */
  75         /* pstapriv->expire_to = 30;  30*2 = 60 sec = 1 min, expire after no any traffic. */
  76         pstapriv->expire_to = 3; /*  3*2 = 6 sec */
  77         pstapriv->max_num_sta = NUM_STA;
  78 #endif
  79         return _SUCCESS;
  80 }
  81
  82 int _rtw_free_sta_priv23a(struct sta_priv *pstapriv)
  83 {
  84         struct list_head *phead, *plist, *ptmp;
  85         struct sta_info *psta;
  86         struct recv_reorder_ctrl *preorder_ctrl;
  87         int index;
  88
  89         if (pstapriv) {
  90                 /*      delete all reordering_ctrl_timer                */
  91                 spin_lock_bh(&pstapriv->sta_hash_lock);
  92                 for (index = 0; index < NUM_STA; index++) {
  93                         phead = &pstapriv->sta_hash[index];
  94
  95                         list_for_each_safe(plist, ptmp, phead) {
  96                                 int i;
  97                                 psta = container_of(plist, struct sta_info,
  98                                                     hash_list);
  99                                 for (i = 0; i < 16 ; i++) {
 100                                         preorder_ctrl = &psta->recvreorder_ctrl[i];
 101                                         del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 102                                 }
 103                         }
 104                 }
 105                 spin_unlock_bh(&pstapriv->sta_hash_lock);
 106                 /*===============================*/
 107         }
 108         return _SUCCESS;
 109 }
 110
 111 struct sta_info *
 112 rtw_alloc_stainfo23a(struct sta_priv *pstapriv, u8 *hwaddr, gfp_t gfp)
 113 {
 114         struct list_head        *phash_list;
 115         struct sta_info *psta;
 116         struct recv_reorder_ctrl *preorder_ctrl;
 117         s32     index;
 118         int i = 0;
 119         u16  wRxSeqInitialValue = 0xffff;
 120
 121         psta = kmalloc(sizeof(struct sta_info), gfp);
 122         if (!psta)
 123                 return NULL;
 124
 125         spin_lock_bh(&pstapriv->sta_hash_lock);
 126
 127         _rtw_init_stainfo(psta);
 128
 129         psta->padapter = pstapriv->padapter;
 130
 131         ether_addr_copy(psta->hwaddr, hwaddr);
 132
 133         index = wifi_mac_hash(hwaddr);
 134
 135         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 136                  ("rtw_alloc_stainfo23a: index  = %x", index));
 137         if (index >= NUM_STA) {
 138                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 139                          ("ERROR => rtw_alloc_stainfo23a: index >= NUM_STA"));
 140                 psta = NULL;
 141                 goto exit;
 142         }
 143         phash_list = &pstapriv->sta_hash[index];
 144
 145         list_add_tail(&psta->hash_list, phash_list);
 146
 147         pstapriv->asoc_sta_count ++ ;
 148
 149 /*  For the SMC router, the sequence number of first packet of WPS handshake will be 0. */
 150 /*  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. */
 151 /*  So, we initialize the tid_rxseq variable as the 0xffff. */
 152
 153         for (i = 0; i < 16; i++)
 154                 memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i], &wRxSeqInitialValue, 2);
 155
 156         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 157                  ("alloc number_%d stainfo  with hwaddr = %pM\n",
 158                  pstapriv->asoc_sta_count, hwaddr));
 159
 160         init_addba_retry_timer23a(psta);
 161
 162         /* for A-MPDU Rx reordering buffer control */
 163         for (i = 0; i < 16; i++) {
 164                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 165
 166                 preorder_ctrl->padapter = pstapriv->padapter;
 167
 168                 preorder_ctrl->enable = false;
 169
 170                 preorder_ctrl->indicate_seq = 0xffff;
 171                 preorder_ctrl->wend_b = 0xffff;
 172                 /* preorder_ctrl->wsize_b = (NR_RECVBUFF-2); */
 173                 preorder_ctrl->wsize_b = 64;/* 64; */
 174
 175                 _rtw_init_queue23a(&preorder_ctrl->pending_recvframe_queue);
 176
 177                 rtw_init_recv_timer23a(preorder_ctrl);
 178         }
 179         /* init for DM */
 180         psta->rssi_stat.UndecoratedSmoothedPWDB = (-1);
 181         psta->rssi_stat.UndecoratedSmoothedCCK = (-1);
 182
 183         /* init for the sequence number of received management frame */
 184         psta->RxMgmtFrameSeqNum = 0xffff;
 185 exit:
 186         spin_unlock_bh(&pstapriv->sta_hash_lock);
 187         return psta;
 188 }
 189
 190 /*  using pstapriv->sta_hash_lock to protect */
 191 int rtw_free_stainfo23a(struct rtw_adapter *padapter, struct sta_info *psta)
 192 {
 193         struct recv_reorder_ctrl *preorder_ctrl;
 194         struct  sta_xmit_priv   *pstaxmitpriv;
 195         struct  xmit_priv       *pxmitpriv = &padapter->xmitpriv;
 196         struct  sta_priv *pstapriv = &padapter->stapriv;
 197         struct hw_xmit *phwxmit;
 198         int i;
 199
 200         if (psta == NULL)
 201                 goto exit;
 202
 203         spin_lock_bh(&psta->lock);
 204         psta->state &= ~_FW_LINKED;
 205         spin_unlock_bh(&psta->lock);
 206
 207         pstaxmitpriv = &psta->sta_xmitpriv;
 208
 209         spin_lock_bh(&pxmitpriv->lock);
 210
 211         rtw_free_xmitframe_queue23a(pxmitpriv, &psta->sleep_q);
 212         psta->sleepq_len = 0;
 213
 214         /* vo */
 215         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
 216         list_del_init(&pstaxmitpriv->vo_q.tx_pending);
 217         phwxmit = pxmitpriv->hwxmits;
 218         phwxmit->accnt -= pstaxmitpriv->vo_q.qcnt;
 219         pstaxmitpriv->vo_q.qcnt = 0;
 220
 221         /* vi */
 222         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
 223         list_del_init(&pstaxmitpriv->vi_q.tx_pending);
 224         phwxmit = pxmitpriv->hwxmits+1;
 225         phwxmit->accnt -= pstaxmitpriv->vi_q.qcnt;
 226         pstaxmitpriv->vi_q.qcnt = 0;
 227
 228         /* be */
 229         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
 230         list_del_init(&pstaxmitpriv->be_q.tx_pending);
 231         phwxmit = pxmitpriv->hwxmits+2;
 232         phwxmit->accnt -= pstaxmitpriv->be_q.qcnt;
 233         pstaxmitpriv->be_q.qcnt = 0;
 234
 235         /* bk */
 236         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
 237         list_del_init(&pstaxmitpriv->bk_q.tx_pending);
 238         phwxmit = pxmitpriv->hwxmits+3;
 239         phwxmit->accnt -= pstaxmitpriv->bk_q.qcnt;
 240         pstaxmitpriv->bk_q.qcnt = 0;
 241
 242         spin_unlock_bh(&pxmitpriv->lock);
 243
 244         list_del_init(&psta->hash_list);
 245         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]));
 246         pstapriv->asoc_sta_count --;
 247
 248         /*  re-init sta_info; 20061114  will be init in alloc_stainfo */
 249         /* _rtw_init_sta_xmit_priv23a(&psta->sta_xmitpriv); */
 250         /* _rtw_init_sta_recv_priv23a(&psta->sta_recvpriv); */
 251
 252         del_timer_sync(&psta->addba_retry_timer);
 253
 254         /* for A-MPDU Rx reordering buffer control, cancel reordering_ctrl_timer */
 255         for (i = 0; i < 16; i++) {
 256                 struct list_head        *phead, *plist;
 257                 struct recv_frame *prframe;
 258                 struct rtw_queue *ppending_recvframe_queue;
 259
 260                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 261
 262                 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 263
 264                 ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
 265
 266                 spin_lock_bh(&ppending_recvframe_queue->lock);
 267                 phead =         get_list_head(ppending_recvframe_queue);
 268                 plist = phead->next;
 269
 270                 while (!list_empty(phead)) {
 271                         prframe = container_of(plist, struct recv_frame, list);
 272                         plist = plist->next;
 273                         list_del_init(&prframe->list);
 274                         rtw_free_recvframe23a(prframe);
 275                 }
 276                 spin_unlock_bh(&ppending_recvframe_queue->lock);
 277         }
 278         if (!(psta->state & WIFI_AP_STATE))
 279                 rtl8723a_SetHalODMVar(padapter, HAL_ODM_STA_INFO, psta, false);
 280 #ifdef CONFIG_8723AU_AP_MODE
 281         spin_lock_bh(&pstapriv->auth_list_lock);
 282         if (!list_empty(&psta->auth_list)) {
 283                 list_del_init(&psta->auth_list);
 284                 pstapriv->auth_list_cnt--;
 285         }
 286         spin_unlock_bh(&pstapriv->auth_list_lock);
 287
 288         psta->expire_to = 0;
 289
 290         psta->sleepq_ac_len = 0;
 291         psta->qos_info = 0;
 292
 293         psta->max_sp_len = 0;
 294         psta->uapsd_bk = 0;
 295         psta->uapsd_be = 0;
 296         psta->uapsd_vi = 0;
 297         psta->uapsd_vo = 0;
 298
 299         psta->has_legacy_ac = 0;
 300
 301         pstapriv->sta_dz_bitmap &= ~CHKBIT(psta->aid);
 302         pstapriv->tim_bitmap &= ~CHKBIT(psta->aid);
 303
 304         if ((psta->aid >0) && (pstapriv->sta_aid[psta->aid - 1] == psta)) {
 305                 pstapriv->sta_aid[psta->aid - 1] = NULL;
 306                 psta->aid = 0;
 307         }
 308 #endif  /*  CONFIG_8723AU_AP_MODE */
 309
 310         kfree(psta);
 311 exit:
 312         return _SUCCESS;
 313 }
 314
 315 /*  free all stainfo which in sta_hash[all] */
 316 void rtw_free_all_stainfo23a(struct rtw_adapter *padapter)
 317 {
 318         struct list_head *plist, *phead, *ptmp;
 319         struct sta_info *psta;
 320         struct sta_priv *pstapriv = &padapter->stapriv;
 321         struct sta_info* pbcmc_stainfo = rtw_get_bcmc_stainfo23a(padapter);
 322         s32 index;
 323
 324         if (pstapriv->asoc_sta_count == 1)
 325                 return;
 326
 327         spin_lock_bh(&pstapriv->sta_hash_lock);
 328
 329         for (index = 0; index < NUM_STA; index++) {
 330                 phead = &pstapriv->sta_hash[index];
 331
 332                 list_for_each_safe(plist, ptmp, phead) {
 333                         psta = container_of(plist, struct sta_info, hash_list);
 334
 335                         if (pbcmc_stainfo!= psta)
 336                                 rtw_free_stainfo23a(padapter, psta);
 337                 }
 338         }
 339         spin_unlock_bh(&pstapriv->sta_hash_lock);
 340 }
 341
 342 /* any station allocated can be searched by hash list */
 343 struct sta_info *rtw_get_stainfo23a(struct sta_priv *pstapriv, const u8 *hwaddr)
 344 {
 345         struct list_head *plist, *phead;
 346         struct sta_info *psta = NULL;
 347         u32     index;
 348         const u8 *addr;
 349
 350         if (hwaddr == NULL)
 351                 return NULL;
 352
 353         if (is_multicast_ether_addr(hwaddr))
 354                 addr = bc_addr;
 355         else
 356                 addr = hwaddr;
 357
 358         index = wifi_mac_hash(addr);
 359
 360         spin_lock_bh(&pstapriv->sta_hash_lock);
 361
 362         phead = &pstapriv->sta_hash[index];
 363
 364         list_for_each(plist, phead) {
 365                 psta = container_of(plist, struct sta_info, hash_list);
 366
 367                 /*  if found the matched address */
 368                 if (ether_addr_equal(psta->hwaddr, addr))
 369                         break;
 370
 371                 psta = NULL;
 372         }
 373         spin_unlock_bh(&pstapriv->sta_hash_lock);
 374         return psta;
 375 }
 376
 377 int rtw_init_bcmc_stainfo23a(struct rtw_adapter* padapter)
 378 {
 379         struct  sta_priv *pstapriv = &padapter->stapriv;
 380         struct sta_info         *psta;
 381         struct tx_servq *ptxservq;
 382         int res = _SUCCESS;
 383
 384         psta = rtw_alloc_stainfo23a(pstapriv, bc_addr, GFP_KERNEL);
 385         if (psta == NULL) {
 386                 res = _FAIL;
 387                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 388                          ("rtw_alloc_stainfo23a fail"));
 389                 return res;
 390         }
 391         /*  default broadcast & multicast use macid 1 */
 392         psta->mac_id = 1;
 393
 394         ptxservq = &psta->sta_xmitpriv.be_q;
 395         return _SUCCESS;
 396 }
 397
 398 struct sta_info *rtw_get_bcmc_stainfo23a(struct rtw_adapter *padapter)
 399 {
 400         struct sta_info         *psta;
 401         struct sta_priv         *pstapriv = &padapter->stapriv;
 402
 403         psta = rtw_get_stainfo23a(pstapriv, bc_addr);
 404         return psta;
 405 }
 406
 407 bool rtw_access_ctrl23a(struct rtw_adapter *padapter, u8 *mac_addr)
 408 {
 409         bool res = true;
 410 #ifdef CONFIG_8723AU_AP_MODE
 411         struct list_head *plist, *phead;
 412         struct rtw_wlan_acl_node *paclnode;
 413         bool match = false;
 414         struct sta_priv *pstapriv = &padapter->stapriv;
 415         struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
 416         struct rtw_queue *pacl_node_q = &pacl_list->acl_node_q;
 417
 418         spin_lock_bh(&pacl_node_q->lock);
 419         phead = get_list_head(pacl_node_q);
 420
 421         list_for_each(plist, phead) {
 422                 paclnode = container_of(plist, struct rtw_wlan_acl_node, list);
 423
 424                 if (ether_addr_equal(paclnode->addr, mac_addr)) {
 425                         if (paclnode->valid) {
 426                                 match = true;
 427                                 break;
 428                         }
 429                 }
 430         }
 431         spin_unlock_bh(&pacl_node_q->lock);
 432
 433         if (pacl_list->mode == 1)/* accept unless in deny list */
 434                 res = (match) ?  false : true;
 435         else if (pacl_list->mode == 2)/* deny unless in accept list */
 436                 res = (match) ?  true : false;
 437         else
 438                  res = true;
 439 #endif
 440         return res;
 441 }