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 static 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         int i;
  54
  55         spin_lock_init(&pstapriv->sta_hash_lock);
  56         pstapriv->asoc_sta_count = 0;
  57         _rtw_init_queue23a(&pstapriv->sleep_q);
  58         _rtw_init_queue23a(&pstapriv->wakeup_q);
  59         for (i = 0; i < NUM_STA; i++)
  60                 INIT_LIST_HEAD(&pstapriv->sta_hash[i]);
  61
  62 #ifdef CONFIG_8723AU_AP_MODE
  63         pstapriv->sta_dz_bitmap = 0;
  64         pstapriv->tim_bitmap = 0;
  65         INIT_LIST_HEAD(&pstapriv->asoc_list);
  66         INIT_LIST_HEAD(&pstapriv->auth_list);
  67         spin_lock_init(&pstapriv->asoc_list_lock);
  68         spin_lock_init(&pstapriv->auth_list_lock);
  69         pstapriv->asoc_list_cnt = 0;
  70         pstapriv->auth_list_cnt = 0;
  71         pstapriv->auth_to = 3; /*  3*2 = 6 sec */
  72         pstapriv->assoc_to = 3;
  73         /* pstapriv->expire_to = 900;  900*2 = 1800 sec = 30 min, expire after no any traffic. */
  74         /* pstapriv->expire_to = 30;  30*2 = 60 sec = 1 min, expire after no any traffic. */
  75         pstapriv->expire_to = 3; /*  3*2 = 6 sec */
  76         pstapriv->max_num_sta = NUM_STA;
  77 #endif
  78         return _SUCCESS;
  79 }
  80
  81 u32     _rtw_free_sta_priv23a(struct    sta_priv *pstapriv)
  82 {
  83         struct list_head *phead, *plist, *ptmp;
  84         struct sta_info *psta;
  85         struct recv_reorder_ctrl *preorder_ctrl;
  86         int     index;
  87
  88         if (pstapriv) {
  89                 /*      delete all reordering_ctrl_timer                */
  90                 spin_lock_bh(&pstapriv->sta_hash_lock);
  91                 for (index = 0; index < NUM_STA; index++) {
  92                         phead = &pstapriv->sta_hash[index];
  93
  94                         list_for_each_safe(plist, ptmp, phead) {
  95                                 int i;
  96                                 psta = container_of(plist, struct sta_info,
  97                                                     hash_list);
  98                                 for (i = 0; i < 16 ; i++) {
  99                                         preorder_ctrl = &psta->recvreorder_ctrl[i];
 100                                         del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 101                                 }
 102                         }
 103                 }
 104                 spin_unlock_bh(&pstapriv->sta_hash_lock);
 105                 /*===============================*/
 106         }
 107         return _SUCCESS;
 108 }
 109
 110 struct sta_info *
 111 rtw_alloc_stainfo23a(struct sta_priv *pstapriv, u8 *hwaddr, int gfp)
 112 {
 113         struct list_head        *phash_list;
 114         struct sta_info *psta;
 115         struct recv_reorder_ctrl *preorder_ctrl;
 116         s32     index;
 117         int i = 0;
 118         u16  wRxSeqInitialValue = 0xffff;
 119
 120         psta = (struct sta_info *)kmalloc(sizeof(struct sta_info), gfp);
 121         if (!psta)
 122                 return NULL;
 123
 124         spin_lock_bh(&pstapriv->sta_hash_lock);
 125
 126         _rtw_init_stainfo(psta);
 127
 128         psta->padapter = pstapriv->padapter;
 129
 130         memcpy(psta->hwaddr, hwaddr, ETH_ALEN);
 131
 132         index = wifi_mac_hash(hwaddr);
 133
 134         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 135                  ("rtw_alloc_stainfo23a: index  = %x", index));
 136         if (index >= NUM_STA) {
 137                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 138                          ("ERROR => rtw_alloc_stainfo23a: index >= NUM_STA"));
 139                 psta = NULL;
 140                 goto exit;
 141         }
 142         phash_list = &pstapriv->sta_hash[index];
 143
 144         list_add_tail(&psta->hash_list, phash_list);
 145
 146         pstapriv->asoc_sta_count ++ ;
 147
 148 /*  For the SMC router, the sequence number of first packet of WPS handshake will be 0. */
 149 /*  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. */
 150 /*  So, we initialize the tid_rxseq variable as the 0xffff. */
 151
 152         for (i = 0; i < 16; i++)
 153                 memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i], &wRxSeqInitialValue, 2);
 154
 155         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 156                  ("alloc number_%d stainfo  with hwaddr = %pM\n",
 157                  pstapriv->asoc_sta_count, hwaddr));
 158
 159         init_addba_retry_timer23a(psta);
 160
 161         /* for A-MPDU Rx reordering buffer control */
 162         for (i = 0; i < 16; i++) {
 163                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 164
 165                 preorder_ctrl->padapter = pstapriv->padapter;
 166
 167                 preorder_ctrl->enable = false;
 168
 169                 preorder_ctrl->indicate_seq = 0xffff;
 170                 preorder_ctrl->wend_b = 0xffff;
 171                 /* preorder_ctrl->wsize_b = (NR_RECVBUFF-2); */
 172                 preorder_ctrl->wsize_b = 64;/* 64; */
 173
 174                 _rtw_init_queue23a(&preorder_ctrl->pending_recvframe_queue);
 175
 176                 rtw_init_recv_timer23a(preorder_ctrl);
 177         }
 178         /* init for DM */
 179         psta->rssi_stat.UndecoratedSmoothedPWDB = (-1);
 180         psta->rssi_stat.UndecoratedSmoothedCCK = (-1);
 181
 182         /* init for the sequence number of received management frame */
 183         psta->RxMgmtFrameSeqNum = 0xffff;
 184 exit:
 185         spin_unlock_bh(&pstapriv->sta_hash_lock);
 186         return psta;
 187 }
 188
 189 /*  using pstapriv->sta_hash_lock to protect */
 190 u32 rtw_free_stainfo23a(struct rtw_adapter *padapter, struct sta_info *psta)
 191 {
 192         struct recv_reorder_ctrl *preorder_ctrl;
 193         struct  sta_xmit_priv   *pstaxmitpriv;
 194         struct  xmit_priv       *pxmitpriv = &padapter->xmitpriv;
 195         struct  sta_priv *pstapriv = &padapter->stapriv;
 196         struct hw_xmit *phwxmit;
 197         int i;
 198
 199         if (psta == NULL)
 200                 goto exit;
 201
 202         spin_lock_bh(&psta->lock);
 203         psta->state &= ~_FW_LINKED;
 204         spin_unlock_bh(&psta->lock);
 205
 206         pstaxmitpriv = &psta->sta_xmitpriv;
 207
 208         spin_lock_bh(&pxmitpriv->lock);
 209
 210         rtw_free_xmitframe_queue23a(pxmitpriv, &psta->sleep_q);
 211         psta->sleepq_len = 0;
 212
 213         /* vo */
 214         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
 215         list_del_init(&pstaxmitpriv->vo_q.tx_pending);
 216         phwxmit = pxmitpriv->hwxmits;
 217         phwxmit->accnt -= pstaxmitpriv->vo_q.qcnt;
 218         pstaxmitpriv->vo_q.qcnt = 0;
 219
 220         /* vi */
 221         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
 222         list_del_init(&pstaxmitpriv->vi_q.tx_pending);
 223         phwxmit = pxmitpriv->hwxmits+1;
 224         phwxmit->accnt -= pstaxmitpriv->vi_q.qcnt;
 225         pstaxmitpriv->vi_q.qcnt = 0;
 226
 227         /* be */
 228         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
 229         list_del_init(&pstaxmitpriv->be_q.tx_pending);
 230         phwxmit = pxmitpriv->hwxmits+2;
 231         phwxmit->accnt -= pstaxmitpriv->be_q.qcnt;
 232         pstaxmitpriv->be_q.qcnt = 0;
 233
 234         /* bk */
 235         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
 236         list_del_init(&pstaxmitpriv->bk_q.tx_pending);
 237         phwxmit = pxmitpriv->hwxmits+3;
 238         phwxmit->accnt -= pstaxmitpriv->bk_q.qcnt;
 239         pstaxmitpriv->bk_q.qcnt = 0;
 240
 241         spin_unlock_bh(&pxmitpriv->lock);
 242
 243         list_del_init(&psta->hash_list);
 244         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]));
 245         pstapriv->asoc_sta_count --;
 246
 247         /*  re-init sta_info; 20061114  will be init in alloc_stainfo */
 248         /* _rtw_init_sta_xmit_priv23a(&psta->sta_xmitpriv); */
 249         /* _rtw_init_sta_recv_priv23a(&psta->sta_recvpriv); */
 250
 251         del_timer_sync(&psta->addba_retry_timer);
 252
 253         /* for A-MPDU Rx reordering buffer control, cancel reordering_ctrl_timer */
 254         for (i = 0; i < 16; i++) {
 255                 struct list_head        *phead, *plist;
 256                 struct recv_frame *prframe;
 257                 struct rtw_queue *ppending_recvframe_queue;
 258                 struct rtw_queue *pfree_recv_queue = &padapter->recvpriv.free_recv_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, pfree_recv_queue);
 275                 }
 276                 spin_unlock_bh(&ppending_recvframe_queue->lock);
 277         }
 278         if (!(psta->state & WIFI_AP_STATE))
 279                 rtw_hal_set_odm_var23a(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         u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 350
 351         if (hwaddr == NULL)
 352                 return NULL;
 353
 354         if (is_multicast_ether_addr(hwaddr))
 355                 addr = bc_addr;
 356         else
 357                 addr = hwaddr;
 358
 359         index = wifi_mac_hash(addr);
 360
 361         spin_lock_bh(&pstapriv->sta_hash_lock);
 362
 363         phead = &pstapriv->sta_hash[index];
 364
 365         list_for_each(plist, phead) {
 366                 psta = container_of(plist, struct sta_info, hash_list);
 367
 368                 if (!memcmp(psta->hwaddr, addr, ETH_ALEN)) {
 369                         /*  if found the matched address */
 370                         break;
 371                 }
 372                 psta = NULL;
 373         }
 374         spin_unlock_bh(&pstapriv->sta_hash_lock);
 375         return psta;
 376 }
 377
 378 u32 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         u32 res = _SUCCESS;
 384         unsigned char bcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 385
 386         psta = rtw_alloc_stainfo23a(pstapriv, bcast_addr, GFP_KERNEL);
 387         if (psta == NULL) {
 388                 res = _FAIL;
 389                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 390                          ("rtw_alloc_stainfo23a fail"));
 391                 return res;
 392         }
 393         /*  default broadcast & multicast use macid 1 */
 394         psta->mac_id = 1;
 395
 396         ptxservq = &psta->sta_xmitpriv.be_q;
 397         return _SUCCESS;
 398 }
 399
 400 struct sta_info *rtw_get_bcmc_stainfo23a(struct rtw_adapter *padapter)
 401 {
 402         struct sta_info         *psta;
 403         struct sta_priv         *pstapriv = &padapter->stapriv;
 404         u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 405
 406          psta = rtw_get_stainfo23a(pstapriv, bc_addr);
 407         return psta;
 408 }
 409
 410 u8 rtw_access_ctrl23a(struct rtw_adapter *padapter, u8 *mac_addr)
 411 {
 412         u8 res = true;
 413 #ifdef CONFIG_8723AU_AP_MODE
 414         struct list_head *plist, *phead;
 415         struct rtw_wlan_acl_node *paclnode;
 416         u8 match = false;
 417         struct sta_priv *pstapriv = &padapter->stapriv;
 418         struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
 419         struct rtw_queue *pacl_node_q = &pacl_list->acl_node_q;
 420
 421         spin_lock_bh(&pacl_node_q->lock);
 422         phead = get_list_head(pacl_node_q);
 423
 424         list_for_each(plist, phead) {
 425                 paclnode = container_of(plist, struct rtw_wlan_acl_node, list);
 426
 427                 if (!memcmp(paclnode->addr, mac_addr, ETH_ALEN)) {
 428                         if (paclnode->valid) {
 429                                 match = true;
 430                                 break;
 431                         }
 432                 }
 433         }
 434         spin_unlock_bh(&pacl_node_q->lock);
 435
 436         if (pacl_list->mode == 1)/* accept unless in deny list */
 437                 res = (match) ?  false : true;
 438         else if (pacl_list->mode == 2)/* deny unless in accept list */
 439                 res = (match) ?  true : false;
 440         else
 441                  res = true;
 442 #endif
 443         return res;
 444 }