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 const 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,
  75             expire after no any traffic. */
  76         /* pstapriv->expire_to = 30;  30*2 = 60 sec = 1 min,
  77             expire after no any traffic. */
  78         pstapriv->expire_to = 3; /*  3*2 = 6 sec */
  79         pstapriv->max_num_sta = NUM_STA;
  80 #endif
  81         return _SUCCESS;
  82 }
  83
  84 int _rtw_free_sta_priv23a(struct sta_priv *pstapriv)
  85 {
  86         struct list_head *phead;
  87         struct sta_info *psta, *ptmp;
  88         struct recv_reorder_ctrl *preorder_ctrl;
  89         int index;
  90
  91         if (pstapriv) {
  92                 /*      delete all reordering_ctrl_timer                */
  93                 spin_lock_bh(&pstapriv->sta_hash_lock);
  94                 for (index = 0; index < NUM_STA; index++) {
  95                         phead = &pstapriv->sta_hash[index];
  96                         list_for_each_entry_safe(psta, ptmp, phead, hash_list) {
  97                                 int i;
  98
  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, const 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\n", index);
 137         if (index >= NUM_STA) {
 138                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 139                          "ERROR => rtw_alloc_stainfo23a: index >= NUM_STA\n");
 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
 150      handshake will be 0. */
 151 /*  In this case, this packet will be dropped by recv_decache function
 152     if we use the 0x00 as the default value for tid_rxseq variable. */
 153 /*  So, we initialize the tid_rxseq variable as the 0xffff. */
 154
 155         for (i = 0; i < 16; i++)
 156                 memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i],
 157                         &wRxSeqInitialValue, 2);
 158
 159         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 160                  "alloc number_%d stainfo  with hwaddr = %pM\n",
 161                  pstapriv->asoc_sta_count, hwaddr);
 162
 163         init_addba_retry_timer23a(psta);
 164
 165         /* for A-MPDU Rx reordering buffer control */
 166         for (i = 0; i < 16; i++) {
 167                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 168
 169                 preorder_ctrl->padapter = pstapriv->padapter;
 170
 171                 preorder_ctrl->enable = false;
 172
 173                 preorder_ctrl->indicate_seq = 0xffff;
 174                 preorder_ctrl->wend_b = 0xffff;
 175                 /* preorder_ctrl->wsize_b = (NR_RECVBUFF-2); */
 176                 preorder_ctrl->wsize_b = 64;/* 64; */
 177
 178                 _rtw_init_queue23a(&preorder_ctrl->pending_recvframe_queue);
 179
 180                 rtw_init_recv_timer23a(preorder_ctrl);
 181         }
 182         /* init for DM */
 183         psta->rssi_stat.UndecoratedSmoothedPWDB = (-1);
 184         psta->rssi_stat.UndecoratedSmoothedCCK = (-1);
 185
 186         /* init for the sequence number of received management frame */
 187         psta->RxMgmtFrameSeqNum = 0xffff;
 188 exit:
 189         spin_unlock_bh(&pstapriv->sta_hash_lock);
 190         return psta;
 191 }
 192
 193 /*  using pstapriv->sta_hash_lock to protect */
 194 int rtw_free_stainfo23a(struct rtw_adapter *padapter, struct sta_info *psta)
 195 {
 196         struct recv_reorder_ctrl *preorder_ctrl;
 197         struct  sta_xmit_priv   *pstaxmitpriv;
 198         struct  xmit_priv       *pxmitpriv = &padapter->xmitpriv;
 199         struct  sta_priv *pstapriv = &padapter->stapriv;
 200         struct hw_xmit *phwxmit;
 201         int i;
 202
 203         if (!psta)
 204                 goto exit;
 205
 206         spin_lock_bh(&psta->lock);
 207         psta->state &= ~_FW_LINKED;
 208         spin_unlock_bh(&psta->lock);
 209
 210         pstaxmitpriv = &psta->sta_xmitpriv;
 211
 212         spin_lock_bh(&pxmitpriv->lock);
 213
 214         rtw_free_xmitframe_queue23a(pxmitpriv, &psta->sleep_q);
 215         psta->sleepq_len = 0;
 216
 217         /* vo */
 218         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
 219         list_del_init(&pstaxmitpriv->vo_q.tx_pending);
 220         phwxmit = pxmitpriv->hwxmits;
 221         phwxmit->accnt -= pstaxmitpriv->vo_q.qcnt;
 222         pstaxmitpriv->vo_q.qcnt = 0;
 223
 224         /* vi */
 225         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
 226         list_del_init(&pstaxmitpriv->vi_q.tx_pending);
 227         phwxmit = pxmitpriv->hwxmits+1;
 228         phwxmit->accnt -= pstaxmitpriv->vi_q.qcnt;
 229         pstaxmitpriv->vi_q.qcnt = 0;
 230
 231         /* be */
 232         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
 233         list_del_init(&pstaxmitpriv->be_q.tx_pending);
 234         phwxmit = pxmitpriv->hwxmits+2;
 235         phwxmit->accnt -= pstaxmitpriv->be_q.qcnt;
 236         pstaxmitpriv->be_q.qcnt = 0;
 237
 238         /* bk */
 239         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
 240         list_del_init(&pstaxmitpriv->bk_q.tx_pending);
 241         phwxmit = pxmitpriv->hwxmits+3;
 242         phwxmit->accnt -= pstaxmitpriv->bk_q.qcnt;
 243         pstaxmitpriv->bk_q.qcnt = 0;
 244
 245         spin_unlock_bh(&pxmitpriv->lock);
 246
 247         list_del_init(&psta->hash_list);
 248         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 249                  "free number_%d stainfo  with hwaddr = %pM\n",
 250                  pstapriv->asoc_sta_count, psta->hwaddr);
 251         pstapriv->asoc_sta_count--;
 252
 253         /*  re-init sta_info; 20061114  will be init in alloc_stainfo */
 254         /* _rtw_init_sta_xmit_priv23a(&psta->sta_xmitpriv); */
 255         /* _rtw_init_sta_recv_priv23a(&psta->sta_recvpriv); */
 256
 257         del_timer_sync(&psta->addba_retry_timer);
 258
 259         /* for A-MPDU Rx reordering buffer control,
 260            cancel reordering_ctrl_timer */
 261         for (i = 0; i < 16; i++) {
 262                 struct list_head        *phead, *plist;
 263                 struct recv_frame *prframe;
 264                 struct rtw_queue *ppending_recvframe_queue;
 265
 266                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 267
 268                 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 269
 270                 ppending_recvframe_queue =
 271                         &preorder_ctrl->pending_recvframe_queue;
 272
 273                 spin_lock_bh(&ppending_recvframe_queue->lock);
 274                 phead =         get_list_head(ppending_recvframe_queue);
 275                 plist = phead->next;
 276
 277                 while (!list_empty(phead)) {
 278                         prframe = container_of(plist, struct recv_frame, list);
 279                         plist = plist->next;
 280                         list_del_init(&prframe->list);
 281                         rtw_free_recvframe23a(prframe);
 282                 }
 283                 spin_unlock_bh(&ppending_recvframe_queue->lock);
 284         }
 285         if (!(psta->state & WIFI_AP_STATE))
 286                 rtl8723a_SetHalODMVar(padapter, HAL_ODM_STA_INFO, psta, false);
 287 #ifdef CONFIG_8723AU_AP_MODE
 288         spin_lock_bh(&pstapriv->auth_list_lock);
 289         if (!list_empty(&psta->auth_list)) {
 290                 list_del_init(&psta->auth_list);
 291                 pstapriv->auth_list_cnt--;
 292         }
 293         spin_unlock_bh(&pstapriv->auth_list_lock);
 294
 295         psta->expire_to = 0;
 296
 297         psta->sleepq_ac_len = 0;
 298         psta->qos_info = 0;
 299
 300         psta->max_sp_len = 0;
 301         psta->uapsd_bk = 0;
 302         psta->uapsd_be = 0;
 303         psta->uapsd_vi = 0;
 304         psta->uapsd_vo = 0;
 305
 306         psta->has_legacy_ac = 0;
 307
 308         pstapriv->sta_dz_bitmap &= ~CHKBIT(psta->aid);
 309         pstapriv->tim_bitmap &= ~CHKBIT(psta->aid);
 310
 311         if ((psta->aid > 0) && (pstapriv->sta_aid[psta->aid - 1] == psta)) {
 312                 pstapriv->sta_aid[psta->aid - 1] = NULL;
 313                 psta->aid = 0;
 314         }
 315 #endif  /*  CONFIG_8723AU_AP_MODE */
 316
 317         kfree(psta);
 318 exit:
 319         return _SUCCESS;
 320 }
 321
 322 /*  free all stainfo which in sta_hash[all] */
 323 void rtw_free_all_stainfo23a(struct rtw_adapter *padapter)
 324 {
 325         struct list_head *phead;
 326         struct sta_info *psta, *ptmp;
 327         struct sta_priv *pstapriv = &padapter->stapriv;
 328         struct sta_info *pbcmc_stainfo = rtw_get_bcmc_stainfo23a(padapter);
 329         s32 index;
 330
 331         if (pstapriv->asoc_sta_count == 1)
 332                 return;
 333
 334         spin_lock_bh(&pstapriv->sta_hash_lock);
 335         for (index = 0; index < NUM_STA; index++) {
 336                 phead = &pstapriv->sta_hash[index];
 337                 list_for_each_entry_safe(psta, ptmp, phead, hash_list) {
 338                         if (pbcmc_stainfo != psta)
 339                                 rtw_free_stainfo23a(padapter, psta);
 340                 }
 341         }
 342         spin_unlock_bh(&pstapriv->sta_hash_lock);
 343 }
 344
 345 /* any station allocated can be searched by hash list */
 346 struct sta_info *rtw_get_stainfo23a(struct sta_priv *pstapriv, const u8 *hwaddr)
 347 {
 348         struct list_head *phead;
 349         struct sta_info *pos, *psta = NULL;
 350         u32 index;
 351         const u8 *addr;
 352
 353         if (!hwaddr)
 354                 return NULL;
 355
 356         if (is_multicast_ether_addr(hwaddr))
 357                 addr = bc_addr;
 358         else
 359                 addr = hwaddr;
 360
 361         index = wifi_mac_hash(addr);
 362
 363         spin_lock_bh(&pstapriv->sta_hash_lock);
 364         phead = &pstapriv->sta_hash[index];
 365         list_for_each_entry(pos, phead, hash_list) {
 366                 psta = pos;
 367
 368                 /*  if found the matched address */
 369                 if (ether_addr_equal(psta->hwaddr, addr))
 370                         break;
 371
 372                 psta = NULL;
 373         }
 374         spin_unlock_bh(&pstapriv->sta_hash_lock);
 375         return psta;
 376 }
 377
 378 int rtw_init_bcmc_stainfo23a(struct rtw_adapter *padapter)
 379 {
 380         struct  sta_priv *pstapriv = &padapter->stapriv;
 381         struct sta_info         *psta;
 382         struct tx_servq *ptxservq;
 383         int res = _SUCCESS;
 384
 385         psta = rtw_alloc_stainfo23a(pstapriv, bc_addr, GFP_KERNEL);
 386         if (!psta) {
 387                 res = _FAIL;
 388                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 389                          "rtw_alloc_stainfo23a fail\n");
 390                 return res;
 391         }
 392         /*  default broadcast & multicast use macid 1 */
 393         psta->mac_id = 1;
 394
 395         ptxservq = &psta->sta_xmitpriv.be_q;
 396         return _SUCCESS;
 397 }
 398
 399 struct sta_info *rtw_get_bcmc_stainfo23a(struct rtw_adapter *padapter)
 400 {
 401         struct sta_info         *psta;
 402         struct sta_priv         *pstapriv = &padapter->stapriv;
 403
 404         psta = rtw_get_stainfo23a(pstapriv, bc_addr);
 405         return psta;
 406 }
 407
 408 bool rtw_access_ctrl23a(struct rtw_adapter *padapter, u8 *mac_addr)
 409 {
 410         bool res = true;
 411 #ifdef CONFIG_8723AU_AP_MODE
 412         struct list_head *phead;
 413         struct rtw_wlan_acl_node *paclnode;
 414         bool match = false;
 415         struct sta_priv *pstapriv = &padapter->stapriv;
 416         struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
 417         struct rtw_queue *pacl_node_q = &pacl_list->acl_node_q;
 418
 419         spin_lock_bh(&pacl_node_q->lock);
 420         phead = get_list_head(pacl_node_q);
 421         list_for_each_entry(paclnode, phead, list) {
 422                 if (ether_addr_equal(paclnode->addr, mac_addr)) {
 423                         if (paclnode->valid) {
 424                                 match = true;
 425                                 break;
 426                         }
 427                 }
 428         }
 429         spin_unlock_bh(&pacl_node_q->lock);
 430
 431         if (pacl_list->mode == 1)/* accept unless in deny list */
 432                 res = (match) ?  false : true;
 433         else if (pacl_list->mode == 2)/* deny unless in accept list */
 434                 res = (match) ?  true : false;
 435         else
 436                  res = true;
 437 #endif
 438         return res;
 439 }