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- /******************************************************************************
- * rtl871x_sta_mgt.c
- *
- * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
- * Linux device driver for RTL8192SU
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
- * Modifications for inclusion into the Linux staging tree are
- * Copyright(c) 2010 Larry Finger. All rights reserved.
- *
- * Contact information:
- * WLAN FAE <wlanfae@realtek.com>
- * Larry Finger <Larry.Finger@lwfinger.net>
- *
- ******************************************************************************/
- #define _RTL871X_STA_MGT_C_
- #include "osdep_service.h"
- #include "drv_types.h"
- #include "recv_osdep.h"
- #include "xmit_osdep.h"
- #include "sta_info.h"
- static void _init_stainfo(struct sta_info *psta)
- {
- memset((u8 *)psta, 0, sizeof(struct sta_info));
- spin_lock_init(&psta->lock);
- INIT_LIST_HEAD(&psta->list);
- INIT_LIST_HEAD(&psta->hash_list);
- _r8712_init_sta_xmit_priv(&psta->sta_xmitpriv);
- _r8712_init_sta_recv_priv(&psta->sta_recvpriv);
- INIT_LIST_HEAD(&psta->asoc_list);
- INIT_LIST_HEAD(&psta->auth_list);
- }
- u32 _r8712_init_sta_priv(struct sta_priv *pstapriv)
- {
- struct sta_info *psta;
- s32 i;
- pstapriv->pallocated_stainfo_buf = kmalloc(sizeof(struct sta_info) *
- NUM_STA + 4, GFP_ATOMIC);
- if (pstapriv->pallocated_stainfo_buf == NULL)
- return _FAIL;
- pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 -
- ((addr_t)(pstapriv->pallocated_stainfo_buf) & 3);
- _init_queue(&pstapriv->free_sta_queue);
- spin_lock_init(&pstapriv->sta_hash_lock);
- pstapriv->asoc_sta_count = 0;
- _init_queue(&pstapriv->sleep_q);
- _init_queue(&pstapriv->wakeup_q);
- psta = (struct sta_info *)(pstapriv->pstainfo_buf);
- for (i = 0; i < NUM_STA; i++) {
- _init_stainfo(psta);
- INIT_LIST_HEAD(&(pstapriv->sta_hash[i]));
- list_add_tail(&psta->list, &pstapriv->free_sta_queue.queue);
- psta++;
- }
- INIT_LIST_HEAD(&pstapriv->asoc_list);
- INIT_LIST_HEAD(&pstapriv->auth_list);
- return _SUCCESS;
- }
- /* this function is used to free the memory of lock || sema for all stainfos */
- static void mfree_all_stainfo(struct sta_priv *pstapriv)
- {
- unsigned long irqL;
- struct list_head *plist, *phead;
- spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
- phead = &pstapriv->free_sta_queue.queue;
- plist = phead->next;
- while (!end_of_queue_search(phead, plist))
- plist = plist->next;
- spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
- }
- static void mfree_sta_priv_lock(struct sta_priv *pstapriv)
- {
- mfree_all_stainfo(pstapriv); /* be done before free sta_hash_lock */
- }
- u32 _r8712_free_sta_priv(struct sta_priv *pstapriv)
- {
- if (pstapriv) {
- mfree_sta_priv_lock(pstapriv);
- kfree(pstapriv->pallocated_stainfo_buf);
- }
- return _SUCCESS;
- }
- struct sta_info *r8712_alloc_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
- {
- s32 index;
- struct list_head *phash_list;
- struct sta_info *psta;
- struct __queue *pfree_sta_queue;
- struct recv_reorder_ctrl *preorder_ctrl;
- int i = 0;
- u16 wRxSeqInitialValue = 0xffff;
- unsigned long flags;
- pfree_sta_queue = &pstapriv->free_sta_queue;
- spin_lock_irqsave(&(pfree_sta_queue->lock), flags);
- if (list_empty(&pfree_sta_queue->queue)) {
- psta = NULL;
- } else {
- psta = LIST_CONTAINOR(pfree_sta_queue->queue.next,
- struct sta_info, list);
- list_del_init(&(psta->list));
- _init_stainfo(psta);
- memcpy(psta->hwaddr, hwaddr, ETH_ALEN);
- index = wifi_mac_hash(hwaddr);
- if (index >= NUM_STA) {
- psta = NULL;
- goto exit;
- }
- phash_list = &(pstapriv->sta_hash[index]);
- list_add_tail(&psta->hash_list, phash_list);
- pstapriv->asoc_sta_count++;
- /* For the SMC router, the sequence number of first packet of WPS handshake
- * will be 0. 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. So, we
- * initialize the tid_rxseq variable as the 0xffff.
- */
- for (i = 0; i < 16; i++)
- memcpy(&psta->sta_recvpriv.rxcache.tid_rxseq[i],
- &wRxSeqInitialValue, 2);
- /* for A-MPDU Rx reordering buffer control */
- for (i = 0; i < 16; i++) {
- preorder_ctrl = &psta->recvreorder_ctrl[i];
- preorder_ctrl->padapter = pstapriv->padapter;
- preorder_ctrl->indicate_seq = 0xffff;
- preorder_ctrl->wend_b = 0xffff;
- preorder_ctrl->wsize_b = 64;
- _init_queue(&preorder_ctrl->pending_recvframe_queue);
- r8712_init_recv_timer(preorder_ctrl);
- }
- }
- exit:
- spin_unlock_irqrestore(&(pfree_sta_queue->lock), flags);
- return psta;
- }
- /* using pstapriv->sta_hash_lock to protect */
- void r8712_free_stainfo(struct _adapter *padapter, struct sta_info *psta)
- {
- int i;
- unsigned long irqL0;
- struct __queue *pfree_sta_queue;
- struct recv_reorder_ctrl *preorder_ctrl;
- struct sta_xmit_priv *pstaxmitpriv;
- struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
- struct sta_priv *pstapriv = &padapter->stapriv;
- if (psta == NULL)
- return;
- pfree_sta_queue = &pstapriv->free_sta_queue;
- pstaxmitpriv = &psta->sta_xmitpriv;
- spin_lock_irqsave(&(pxmitpriv->vo_pending.lock), irqL0);
- r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vo_q.sta_pending);
- list_del_init(&(pstaxmitpriv->vo_q.tx_pending));
- spin_unlock_irqrestore(&(pxmitpriv->vo_pending.lock), irqL0);
- spin_lock_irqsave(&(pxmitpriv->vi_pending.lock), irqL0);
- r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->vi_q.sta_pending);
- list_del_init(&(pstaxmitpriv->vi_q.tx_pending));
- spin_unlock_irqrestore(&(pxmitpriv->vi_pending.lock), irqL0);
- spin_lock_irqsave(&(pxmitpriv->bk_pending.lock), irqL0);
- r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->bk_q.sta_pending);
- list_del_init(&(pstaxmitpriv->bk_q.tx_pending));
- spin_unlock_irqrestore(&(pxmitpriv->bk_pending.lock), irqL0);
- spin_lock_irqsave(&(pxmitpriv->be_pending.lock), irqL0);
- r8712_free_xmitframe_queue(pxmitpriv, &pstaxmitpriv->be_q.sta_pending);
- list_del_init(&(pstaxmitpriv->be_q.tx_pending));
- spin_unlock_irqrestore(&(pxmitpriv->be_pending.lock), irqL0);
- list_del_init(&psta->hash_list);
- pstapriv->asoc_sta_count--;
- /* re-init sta_info; 20061114 */
- _r8712_init_sta_xmit_priv(&psta->sta_xmitpriv);
- _r8712_init_sta_recv_priv(&psta->sta_recvpriv);
- /* for A-MPDU Rx reordering buffer control,
- * cancel reordering_ctrl_timer */
- for (i = 0; i < 16; i++) {
- preorder_ctrl = &psta->recvreorder_ctrl[i];
- del_timer(&preorder_ctrl->reordering_ctrl_timer);
- }
- spin_lock(&(pfree_sta_queue->lock));
- /* insert into free_sta_queue; 20061114 */
- list_add_tail(&psta->list, &pfree_sta_queue->queue);
- spin_unlock(&(pfree_sta_queue->lock));
- }
- /* free all stainfo which in sta_hash[all] */
- void r8712_free_all_stainfo(struct _adapter *padapter)
- {
- unsigned long irqL;
- struct list_head *plist, *phead;
- s32 index;
- struct sta_info *psta = NULL;
- struct sta_priv *pstapriv = &padapter->stapriv;
- struct sta_info *pbcmc_stainfo = r8712_get_bcmc_stainfo(padapter);
- if (pstapriv->asoc_sta_count == 1)
- return;
- spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
- for (index = 0; index < NUM_STA; index++) {
- phead = &(pstapriv->sta_hash[index]);
- plist = phead->next;
- while (!end_of_queue_search(phead, plist)) {
- psta = LIST_CONTAINOR(plist,
- struct sta_info, hash_list);
- plist = plist->next;
- if (pbcmc_stainfo != psta)
- r8712_free_stainfo(padapter, psta);
- }
- }
- spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
- }
- /* any station allocated can be searched by hash list */
- struct sta_info *r8712_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
- {
- unsigned long irqL;
- struct list_head *plist, *phead;
- struct sta_info *psta = NULL;
- u32 index;
- if (hwaddr == NULL)
- return NULL;
- index = wifi_mac_hash(hwaddr);
- spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
- phead = &(pstapriv->sta_hash[index]);
- plist = phead->next;
- while (!end_of_queue_search(phead, plist)) {
- psta = LIST_CONTAINOR(plist, struct sta_info, hash_list);
- if ((!memcmp(psta->hwaddr, hwaddr, ETH_ALEN))) {
- /* if found the matched address */
- break;
- }
- psta = NULL;
- plist = plist->next;
- }
- spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
- return psta;
- }
- void r8712_init_bcmc_stainfo(struct _adapter *padapter)
- {
- unsigned char bcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
- struct sta_priv *pstapriv = &padapter->stapriv;
- r8712_alloc_stainfo(pstapriv, bcast_addr);
- }
- struct sta_info *r8712_get_bcmc_stainfo(struct _adapter *padapter)
- {
- struct sta_priv *pstapriv = &padapter->stapriv;
- u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
- return r8712_get_stainfo(pstapriv, bc_addr);
- }
- u8 r8712_access_ctrl(struct wlan_acl_pool *pacl_list, u8 *mac_addr)
- {
- return true;
- }
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