kernel/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, *plist, *ptmp;
  87         struct sta_info *psta;
  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
  97                         list_for_each_safe(plist, ptmp, phead) {
  98                                 int i;
  99
 100                                 psta = container_of(plist, struct sta_info,
 101                                                     hash_list);
 102                                 for (i = 0; i < 16 ; i++) {
 103                                         preorder_ctrl = &psta->recvreorder_ctrl[i];
 104                                         del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 105                                 }
 106                         }
 107                 }
 108                 spin_unlock_bh(&pstapriv->sta_hash_lock);
 109                 /*===============================*/
 110         }
 111         return _SUCCESS;
 112 }
 113
 114 struct sta_info *
 115 rtw_alloc_stainfo23a(struct sta_priv *pstapriv, const u8 *hwaddr, gfp_t gfp)
 116 {
 117         struct list_head        *phash_list;
 118         struct sta_info *psta;
 119         struct recv_reorder_ctrl *preorder_ctrl;
 120         s32     index;
 121         int i = 0;
 122         u16  wRxSeqInitialValue = 0xffff;
 123
 124         psta = kmalloc(sizeof(struct sta_info), gfp);
 125         if (!psta)
 126                 return NULL;
 127
 128         spin_lock_bh(&pstapriv->sta_hash_lock);
 129
 130         _rtw_init_stainfo(psta);
 131
 132         psta->padapter = pstapriv->padapter;
 133
 134         ether_addr_copy(psta->hwaddr, hwaddr);
 135
 136         index = wifi_mac_hash(hwaddr);
 137
 138         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 139                  "rtw_alloc_stainfo23a: index  = %x\n", index);
 140         if (index >= NUM_STA) {
 141                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 142                          "ERROR => rtw_alloc_stainfo23a: index >= NUM_STA\n");
 143                 psta = NULL;
 144                 goto exit;
 145         }
 146         phash_list = &pstapriv->sta_hash[index];
 147
 148         list_add_tail(&psta->hash_list, phash_list);
 149
 150         pstapriv->asoc_sta_count++;
 151
 152 /*  For the SMC router, the sequence number of first packet of WPS
 153      handshake will be 0. */
 154 /*  In this case, this packet will be dropped by recv_decache function
 155     if we use the 0x00 as the default value for tid_rxseq variable. */
 156 /*  So, we initialize the tid_rxseq variable as the 0xffff. */
 157
 158         for (i = 0; i < 16; i++)
 159                 memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i],
 160                         &wRxSeqInitialValue, 2);
 161
 162         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_info_,
 163                  "alloc number_%d stainfo  with hwaddr = %pM\n",
 164                  pstapriv->asoc_sta_count, hwaddr);
 165
 166         init_addba_retry_timer23a(psta);
 167
 168         /* for A-MPDU Rx reordering buffer control */
 169         for (i = 0; i < 16; i++) {
 170                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 171
 172                 preorder_ctrl->padapter = pstapriv->padapter;
 173
 174                 preorder_ctrl->enable = false;
 175
 176                 preorder_ctrl->indicate_seq = 0xffff;
 177                 preorder_ctrl->wend_b = 0xffff;
 178                 /* preorder_ctrl->wsize_b = (NR_RECVBUFF-2); */
 179                 preorder_ctrl->wsize_b = 64;/* 64; */
 180
 181                 _rtw_init_queue23a(&preorder_ctrl->pending_recvframe_queue);
 182
 183                 rtw_init_recv_timer23a(preorder_ctrl);
 184         }
 185         /* init for DM */
 186         psta->rssi_stat.UndecoratedSmoothedPWDB = (-1);
 187         psta->rssi_stat.UndecoratedSmoothedCCK = (-1);
 188
 189         /* init for the sequence number of received management frame */
 190         psta->RxMgmtFrameSeqNum = 0xffff;
 191 exit:
 192         spin_unlock_bh(&pstapriv->sta_hash_lock);
 193         return psta;
 194 }
 195
 196 /*  using pstapriv->sta_hash_lock to protect */
 197 int rtw_free_stainfo23a(struct rtw_adapter *padapter, struct sta_info *psta)
 198 {
 199         struct recv_reorder_ctrl *preorder_ctrl;
 200         struct  sta_xmit_priv   *pstaxmitpriv;
 201         struct  xmit_priv       *pxmitpriv = &padapter->xmitpriv;
 202         struct  sta_priv *pstapriv = &padapter->stapriv;
 203         struct hw_xmit *phwxmit;
 204         int i;
 205
 206         if (psta == NULL)
 207                 goto exit;
 208
 209         spin_lock_bh(&psta->lock);
 210         psta->state &= ~_FW_LINKED;
 211         spin_unlock_bh(&psta->lock);
 212
 213         pstaxmitpriv = &psta->sta_xmitpriv;
 214
 215         spin_lock_bh(&pxmitpriv->lock);
 216
 217         rtw_free_xmitframe_queue23a(pxmitpriv, &psta->sleep_q);
 218         psta->sleepq_len = 0;
 219
 220         /* vo */
 221         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
 222         list_del_init(&pstaxmitpriv->vo_q.tx_pending);
 223         phwxmit = pxmitpriv->hwxmits;
 224         phwxmit->accnt -= pstaxmitpriv->vo_q.qcnt;
 225         pstaxmitpriv->vo_q.qcnt = 0;
 226
 227         /* vi */
 228         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
 229         list_del_init(&pstaxmitpriv->vi_q.tx_pending);
 230         phwxmit = pxmitpriv->hwxmits+1;
 231         phwxmit->accnt -= pstaxmitpriv->vi_q.qcnt;
 232         pstaxmitpriv->vi_q.qcnt = 0;
 233
 234         /* be */
 235         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
 236         list_del_init(&pstaxmitpriv->be_q.tx_pending);
 237         phwxmit = pxmitpriv->hwxmits+2;
 238         phwxmit->accnt -= pstaxmitpriv->be_q.qcnt;
 239         pstaxmitpriv->be_q.qcnt = 0;
 240
 241         /* bk */
 242         rtw_free_xmitframe_queue23a(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
 243         list_del_init(&pstaxmitpriv->bk_q.tx_pending);
 244         phwxmit = pxmitpriv->hwxmits+3;
 245         phwxmit->accnt -= pstaxmitpriv->bk_q.qcnt;
 246         pstaxmitpriv->bk_q.qcnt = 0;
 247
 248         spin_unlock_bh(&pxmitpriv->lock);
 249
 250         list_del_init(&psta->hash_list);
 251         RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 252                  "free number_%d stainfo  with hwaddr = %pM\n",
 253                  pstapriv->asoc_sta_count, psta->hwaddr);
 254         pstapriv->asoc_sta_count--;
 255
 256         /*  re-init sta_info; 20061114  will be init in alloc_stainfo */
 257         /* _rtw_init_sta_xmit_priv23a(&psta->sta_xmitpriv); */
 258         /* _rtw_init_sta_recv_priv23a(&psta->sta_recvpriv); */
 259
 260         del_timer_sync(&psta->addba_retry_timer);
 261
 262         /* for A-MPDU Rx reordering buffer control,
 263            cancel reordering_ctrl_timer */
 264         for (i = 0; i < 16; i++) {
 265                 struct list_head        *phead, *plist;
 266                 struct recv_frame *prframe;
 267                 struct rtw_queue *ppending_recvframe_queue;
 268
 269                 preorder_ctrl = &psta->recvreorder_ctrl[i];
 270
 271                 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
 272
 273                 ppending_recvframe_queue =
 274                         &preorder_ctrl->pending_recvframe_queue;
 275
 276                 spin_lock_bh(&ppending_recvframe_queue->lock);
 277                 phead =         get_list_head(ppending_recvframe_queue);
 278                 plist = phead->next;
 279
 280                 while (!list_empty(phead)) {
 281                         prframe = container_of(plist, struct recv_frame, list);
 282                         plist = plist->next;
 283                         list_del_init(&prframe->list);
 284                         rtw_free_recvframe23a(prframe);
 285                 }
 286                 spin_unlock_bh(&ppending_recvframe_queue->lock);
 287         }
 288         if (!(psta->state & WIFI_AP_STATE))
 289                 rtl8723a_SetHalODMVar(padapter, HAL_ODM_STA_INFO, psta, false);
 290 #ifdef CONFIG_8723AU_AP_MODE
 291         spin_lock_bh(&pstapriv->auth_list_lock);
 292         if (!list_empty(&psta->auth_list)) {
 293                 list_del_init(&psta->auth_list);
 294                 pstapriv->auth_list_cnt--;
 295         }
 296         spin_unlock_bh(&pstapriv->auth_list_lock);
 297
 298         psta->expire_to = 0;
 299
 300         psta->sleepq_ac_len = 0;
 301         psta->qos_info = 0;
 302
 303         psta->max_sp_len = 0;
 304         psta->uapsd_bk = 0;
 305         psta->uapsd_be = 0;
 306         psta->uapsd_vi = 0;
 307         psta->uapsd_vo = 0;
 308
 309         psta->has_legacy_ac = 0;
 310
 311         pstapriv->sta_dz_bitmap &= ~CHKBIT(psta->aid);
 312         pstapriv->tim_bitmap &= ~CHKBIT(psta->aid);
 313
 314         if ((psta->aid > 0) && (pstapriv->sta_aid[psta->aid - 1] == psta)) {
 315                 pstapriv->sta_aid[psta->aid - 1] = NULL;
 316                 psta->aid = 0;
 317         }
 318 #endif  /*  CONFIG_8723AU_AP_MODE */
 319
 320         kfree(psta);
 321 exit:
 322         return _SUCCESS;
 323 }
 324
 325 /*  free all stainfo which in sta_hash[all] */
 326 void rtw_free_all_stainfo23a(struct rtw_adapter *padapter)
 327 {
 328         struct list_head *plist, *phead, *ptmp;
 329         struct sta_info *psta;
 330         struct sta_priv *pstapriv = &padapter->stapriv;
 331         struct sta_info *pbcmc_stainfo = rtw_get_bcmc_stainfo23a(padapter);
 332         s32 index;
 333
 334         if (pstapriv->asoc_sta_count == 1)
 335                 return;
 336
 337         spin_lock_bh(&pstapriv->sta_hash_lock);
 338
 339         for (index = 0; index < NUM_STA; index++) {
 340                 phead = &pstapriv->sta_hash[index];
 341
 342                 list_for_each_safe(plist, ptmp, phead) {
 343                         psta = container_of(plist, struct sta_info, hash_list);
 344
 345                         if (pbcmc_stainfo != psta)
 346                                 rtw_free_stainfo23a(padapter, psta);
 347                 }
 348         }
 349         spin_unlock_bh(&pstapriv->sta_hash_lock);
 350 }
 351
 352 /* any station allocated can be searched by hash list */
 353 struct sta_info *rtw_get_stainfo23a(struct sta_priv *pstapriv, const u8 *hwaddr)
 354 {
 355         struct list_head *plist, *phead;
 356         struct sta_info *psta = NULL;
 357         u32     index;
 358         const u8 *addr;
 359
 360         if (hwaddr == NULL)
 361                 return NULL;
 362
 363         if (is_multicast_ether_addr(hwaddr))
 364                 addr = bc_addr;
 365         else
 366                 addr = hwaddr;
 367
 368         index = wifi_mac_hash(addr);
 369
 370         spin_lock_bh(&pstapriv->sta_hash_lock);
 371
 372         phead = &pstapriv->sta_hash[index];
 373
 374         list_for_each(plist, phead) {
 375                 psta = container_of(plist, struct sta_info, hash_list);
 376
 377                 /*  if found the matched address */
 378                 if (ether_addr_equal(psta->hwaddr, addr))
 379                         break;
 380
 381                 psta = NULL;
 382         }
 383         spin_unlock_bh(&pstapriv->sta_hash_lock);
 384         return psta;
 385 }
 386
 387 int rtw_init_bcmc_stainfo23a(struct rtw_adapter *padapter)
 388 {
 389         struct  sta_priv *pstapriv = &padapter->stapriv;
 390         struct sta_info         *psta;
 391         struct tx_servq *ptxservq;
 392         int res = _SUCCESS;
 393
 394         psta = rtw_alloc_stainfo23a(pstapriv, bc_addr, GFP_KERNEL);
 395         if (psta == NULL) {
 396                 res = _FAIL;
 397                 RT_TRACE(_module_rtl871x_sta_mgt_c_, _drv_err_,
 398                          "rtw_alloc_stainfo23a fail\n");
 399                 return res;
 400         }
 401         /*  default broadcast & multicast use macid 1 */
 402         psta->mac_id = 1;
 403
 404         ptxservq = &psta->sta_xmitpriv.be_q;
 405         return _SUCCESS;
 406 }
 407
 408 struct sta_info *rtw_get_bcmc_stainfo23a(struct rtw_adapter *padapter)
 409 {
 410         struct sta_info         *psta;
 411         struct sta_priv         *pstapriv = &padapter->stapriv;
 412
 413         psta = rtw_get_stainfo23a(pstapriv, bc_addr);
 414         return psta;
 415 }
 416
 417 bool rtw_access_ctrl23a(struct rtw_adapter *padapter, u8 *mac_addr)
 418 {
 419         bool res = true;
 420 #ifdef CONFIG_8723AU_AP_MODE
 421         struct list_head *plist, *phead;
 422         struct rtw_wlan_acl_node *paclnode;
 423         bool match = false;
 424         struct sta_priv *pstapriv = &padapter->stapriv;
 425         struct wlan_acl_pool *pacl_list = &pstapriv->acl_list;
 426         struct rtw_queue *pacl_node_q = &pacl_list->acl_node_q;
 427
 428         spin_lock_bh(&pacl_node_q->lock);
 429         phead = get_list_head(pacl_node_q);
 430
 431         list_for_each(plist, phead) {
 432                 paclnode = container_of(plist, struct rtw_wlan_acl_node, list);
 433
 434                 if (ether_addr_equal(paclnode->addr, mac_addr)) {
 435                         if (paclnode->valid) {
 436                                 match = true;
 437                                 break;
 438                         }
 439                 }
 440         }
 441         spin_unlock_bh(&pacl_node_q->lock);
 442
 443         if (pacl_list->mode == 1)/* accept unless in deny list */
 444                 res = (match) ?  false : true;
 445         else if (pacl_list->mode == 2)/* deny unless in accept list */
 446                 res = (match) ?  true : false;
 447         else
 448                  res = true;
 449 #endif
 450         return res;
 451 }