diff options
Diffstat (limited to 'drivers/staging/rtl8712/rtl871x_sta_mgt.c')
| -rw-r--r-- | drivers/staging/rtl8712/rtl871x_sta_mgt.c | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/drivers/staging/rtl8712/rtl871x_sta_mgt.c b/drivers/staging/rtl8712/rtl871x_sta_mgt.c new file mode 100644 index 0000000..64f5696 --- /dev/null +++ b/drivers/staging/rtl8712/rtl871x_sta_mgt.c @@ -0,0 +1,299 @@ +/****************************************************************************** + * 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_listhead(&psta->list); + _init_listhead(&psta->hash_list); + _r8712_init_sta_xmit_priv(&psta->sta_xmitpriv); + _r8712_init_sta_recv_priv(&psta->sta_recvpriv); +#ifdef CONFIG_R8712_AP + _init_listhead(&psta->auth_list); +#endif +} + +u32 _r8712_init_sta_priv(struct sta_priv *pstapriv) +{ + struct sta_info *psta; + s32 i; + + pstapriv->pallocated_stainfo_buf = _malloc(sizeof(struct sta_info) * + NUM_STA + 4); + 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_listhead(&(pstapriv->sta_hash[i])); + list_insert_tail(&psta->list, + get_list_head(&pstapriv->free_sta_queue)); + psta++; + } +#ifdef CONFIG_R8712_AP + _init_listhead(&pstapriv->asoc_list); + _init_listhead(&pstapriv->auth_list); +#endif + 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; + struct sta_info *psta = NULL; + + spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL); + phead = get_list_head(&pstapriv->free_sta_queue); + plist = get_next(phead); + while ((end_of_queue_search(phead, plist)) == false) { + psta = LIST_CONTAINOR(plist, struct sta_info, list); + plist = get_next(plist); + } + + 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) +{ + uint tmp_aid; + 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 (_queue_empty(pfree_sta_queue) == true) + psta = NULL; + else { + psta = LIST_CONTAINOR(get_next(&pfree_sta_queue->queue), + struct sta_info, list); + list_delete(&(psta->list)); + tmp_aid = psta->aid; + _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_insert_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_delete(&(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_delete(&(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_delete(&(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_delete(&(pstaxmitpriv->be_q.tx_pending)); + spin_unlock_irqrestore(&(pxmitpriv->be_pending.lock), irqL0); + list_delete(&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]; + _cancel_timer_ex(&preorder_ctrl->reordering_ctrl_timer); + } + spin_lock(&(pfree_sta_queue->lock)); + /* insert into free_sta_queue; 20061114 */ + list_insert_tail(&psta->list, get_list_head(pfree_sta_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 = get_next(phead); + while ((end_of_queue_search(phead, plist)) == false) { + psta = LIST_CONTAINOR(plist, + struct sta_info, hash_list); + plist = get_next(plist); + 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 = get_next(phead); + while ((end_of_queue_search(phead, plist)) == false) { + 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 = get_next(plist); + } + spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL); + return psta; +} + +void r8712_init_bcmc_stainfo(struct _adapter *padapter) +{ + struct sta_info *psta; + struct tx_servq *ptxservq; + unsigned char bcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + struct sta_priv *pstapriv = &padapter->stapriv; + + psta = r8712_alloc_stainfo(pstapriv, bcast_addr); + if (psta == NULL) + return; + ptxservq = &(psta->sta_xmitpriv.be_q); +} + +struct sta_info *r8712_get_bcmc_stainfo(struct _adapter *padapter) +{ + struct sta_info *psta; + struct sta_priv *pstapriv = &padapter->stapriv; + u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + + psta = r8712_get_stainfo(pstapriv, bc_addr); + return psta; +} + + +u8 r8712_access_ctrl(struct wlan_acl_pool *pacl_list, u8 *mac_addr) +{ + return true; +} |
