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rtl8188eu/core/rtw_recv.c
Larry Finger 4f92869c5b rtl8188eu: Remove "if 1" statements 
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
2013-07-26 21:37:57 -05:00

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/******************************************************************************
*
* Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
*
* 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
*
*
******************************************************************************/
#define _RTW_RECV_C_
#include <osdep_service.h>
#include <drv_types.h>
#include <recv_osdep.h>
#include <mlme_osdep.h>
#include <ip.h>
#include <if_ether.h>
#include <ethernet.h>
#include <usb_ops.h>
#include <wifi.h>
#include <circ_buf.h>
void rtw_signal_stat_timer_hdl(RTW_TIMER_HDL_ARGS);
void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
{
_func_enter_;
_rtw_memset((u8 *)psta_recvpriv, 0, sizeof (struct sta_recv_priv));
_rtw_spinlock_init(&psta_recvpriv->lock);
_rtw_init_queue(&psta_recvpriv->defrag_q);
_func_exit_;
}
int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
{
int i;
union recv_frame *precvframe;
int res=_SUCCESS;
_func_enter_;
_rtw_spinlock_init(&precvpriv->lock);
_rtw_init_queue(&precvpriv->free_recv_queue);
_rtw_init_queue(&precvpriv->recv_pending_queue);
_rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
precvpriv->adapter = padapter;
precvpriv->free_recvframe_cnt = NR_RECVFRAME;
rtw_os_recv_resource_init(precvpriv, padapter);
precvpriv->pallocated_frame_buf = rtw_zvmalloc(NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ);
if (precvpriv->pallocated_frame_buf==NULL){
res= _FAIL;
goto exit;
}
precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((size_t)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ);
precvframe = (union recv_frame*) precvpriv->precv_frame_buf;
for (i=0; i < NR_RECVFRAME ; i++)
{
_rtw_init_listhead(&(precvframe->u.list));
rtw_list_insert_tail(&(precvframe->u.list), &(precvpriv->free_recv_queue.queue));
res = rtw_os_recv_resource_alloc(padapter, precvframe);
precvframe->u.hdr.len = 0;
precvframe->u.hdr.adapter =padapter;
precvframe++;
}
precvpriv->rx_pending_cnt=1;
_rtw_init_sema(&precvpriv->allrxreturnevt, 0);
res = rtw_hal_init_recv_priv(padapter);
_init_timer(&precvpriv->signal_stat_timer, padapter->pnetdev, RTW_TIMER_HDL_NAME(signal_stat), padapter);
precvpriv->signal_stat_sampling_interval = 1000; /* ms */
rtw_set_signal_stat_timer(precvpriv);
exit:
_func_exit_;
return res;
}
void rtw_mfree_recv_priv_lock(struct recv_priv *precvpriv)
{
_rtw_spinlock_free(&precvpriv->lock);
_rtw_spinlock_free(&precvpriv->free_recv_queue.lock);
_rtw_spinlock_free(&precvpriv->recv_pending_queue.lock);
_rtw_spinlock_free(&precvpriv->free_recv_buf_queue.lock);
}
void _rtw_free_recv_priv (struct recv_priv *precvpriv)
{
struct adapter *padapter = precvpriv->adapter;
_func_enter_;
rtw_free_uc_swdec_pending_queue(padapter);
rtw_mfree_recv_priv_lock(precvpriv);
rtw_os_recv_resource_free(precvpriv);
if (precvpriv->pallocated_frame_buf) {
rtw_vmfree(precvpriv->pallocated_frame_buf, NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ);
}
rtw_hal_free_recv_priv(padapter);
_func_exit_;
}
union recv_frame *_rtw_alloc_recvframe (struct __queue *pfree_recv_queue)
{
union recv_frame *precvframe;
struct list_head *plist, *phead;
struct adapter *padapter;
struct recv_priv *precvpriv;
_func_enter_;
if (_rtw_queue_empty(pfree_recv_queue) == true)
{
precvframe = NULL;
}
else
{
phead = get_list_head(pfree_recv_queue);
plist = get_next(phead);
precvframe = LIST_CONTAINOR(plist, union recv_frame, u);
rtw_list_delete(&precvframe->u.hdr.list);
padapter=precvframe->u.hdr.adapter;
if (padapter !=NULL){
precvpriv=&padapter->recvpriv;
if (pfree_recv_queue == &precvpriv->free_recv_queue)
precvpriv->free_recvframe_cnt--;
}
}
_func_exit_;
return precvframe;
}
union recv_frame *rtw_alloc_recvframe (struct __queue *pfree_recv_queue)
{
unsigned long irqL;
union recv_frame *precvframe;
_enter_critical_bh(&pfree_recv_queue->lock, &irqL);
precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
_exit_critical_bh(&pfree_recv_queue->lock, &irqL);
return precvframe;
}
void rtw_init_recvframe(union recv_frame *precvframe, struct recv_priv *precvpriv)
{
/* Perry: This can be removed */
_rtw_init_listhead(&precvframe->u.hdr.list);
precvframe->u.hdr.len=0;
}
int rtw_free_recvframe(union recv_frame *precvframe, struct __queue *pfree_recv_queue)
{
unsigned long irqL;
struct adapter *padapter=precvframe->u.hdr.adapter;
struct recv_priv *precvpriv = &padapter->recvpriv;
_func_enter_;
if (precvframe->u.hdr.pkt) {
dev_kfree_skb_any(precvframe->u.hdr.pkt);/* free skb by driver */
precvframe->u.hdr.pkt = NULL;
}
_enter_critical_bh(&pfree_recv_queue->lock, &irqL);
rtw_list_delete(&(precvframe->u.hdr.list));
precvframe->u.hdr.len = 0;
rtw_list_insert_tail(&(precvframe->u.hdr.list), get_list_head(pfree_recv_queue));
if (padapter !=NULL){
if (pfree_recv_queue == &precvpriv->free_recv_queue)
precvpriv->free_recvframe_cnt++;
}
_exit_critical_bh(&pfree_recv_queue->lock, &irqL);
_func_exit_;
return _SUCCESS;
}
int _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
{
struct adapter *padapter=precvframe->u.hdr.adapter;
struct recv_priv *precvpriv = &padapter->recvpriv;
_func_enter_;
rtw_list_delete(&(precvframe->u.hdr.list));
rtw_list_insert_tail(&(precvframe->u.hdr.list), get_list_head(queue));
if (padapter != NULL) {
if (queue == &precvpriv->free_recv_queue)
precvpriv->free_recvframe_cnt++;
}
_func_exit_;
return _SUCCESS;
}
int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
{
int ret;
unsigned long irqL;
_enter_critical_bh(&queue->lock, &irqL);
ret = _rtw_enqueue_recvframe(precvframe, queue);
_exit_critical_bh(&queue->lock, &irqL);
return ret;
}
/*
caller : defrag ; recvframe_chk_defrag in recv_thread (passive)
pframequeue: defrag_queue : will be accessed in recv_thread (passive)
using spinlock to protect
*/
void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue)
{
union recv_frame *precvframe;
struct list_head *plist, *phead;
_func_enter_;
spin_lock(&pframequeue->lock);
phead = get_list_head(pframequeue);
plist = get_next(phead);
while (rtw_end_of_queue_search(phead, plist) == false)
{
precvframe = LIST_CONTAINOR(plist, union recv_frame, u);
plist = get_next(plist);
rtw_free_recvframe(precvframe, pfree_recv_queue);
}
spin_unlock(&pframequeue->lock);
_func_exit_;
}
u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
{
u32 cnt = 0;
union recv_frame *pending_frame;
while ((pending_frame=rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__);
cnt++;
}
return cnt;
}
int rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue)
{
unsigned long irqL;
_enter_critical_bh(&queue->lock, &irqL);
rtw_list_delete(&precvbuf->list);
rtw_list_insert_head(&precvbuf->list, get_list_head(queue));
_exit_critical_bh(&queue->lock, &irqL);
return _SUCCESS;
}
int rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue)
{
unsigned long irqL;
_enter_critical_ex(&queue->lock, &irqL);
rtw_list_delete(&precvbuf->list);
rtw_list_insert_tail(&precvbuf->list, get_list_head(queue));
_exit_critical_ex(&queue->lock, &irqL);
return _SUCCESS;
}
struct recv_buf *rtw_dequeue_recvbuf (struct __queue *queue)
{
unsigned long irqL;
struct recv_buf *precvbuf;
struct list_head *plist, *phead;
_enter_critical_ex(&queue->lock, &irqL);
if (_rtw_queue_empty(queue) == true)
{
precvbuf = NULL;
}
else
{
phead = get_list_head(queue);
plist = get_next(phead);
precvbuf = LIST_CONTAINOR(plist, struct recv_buf, list);
rtw_list_delete(&precvbuf->list);
}
_exit_critical_ex(&queue->lock, &irqL);
return precvbuf;
}
int recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe){
int i,res=_SUCCESS;
u32 datalen;
u8 miccode[8];
u8 bmic_err=false,brpt_micerror = true;
u8 *pframe, *payload,*pframemic;
u8 *mickey;
struct sta_info *stainfo;
struct rx_pkt_attrib *prxattrib=&precvframe->u.hdr.attrib;
struct security_priv *psecuritypriv=&adapter->securitypriv;
struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
_func_enter_;
stainfo=rtw_get_stainfo(&adapter->stapriv ,&prxattrib->ta[0]);
if (prxattrib->encrypt ==_TKIP_)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("\n recvframe_chkmic:prxattrib->encrypt ==_TKIP_\n"));
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("\n recvframe_chkmic:da=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
prxattrib->ra[0],prxattrib->ra[1],prxattrib->ra[2],prxattrib->ra[3],prxattrib->ra[4],prxattrib->ra[5]));
/* calculate mic code */
if (stainfo!= NULL)
{
if (IS_MCAST(prxattrib->ra))
{
mickey=&psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("\n recvframe_chkmic: bcmc key\n"));
if (psecuritypriv->binstallGrpkey==false)
{
res=_FAIL;
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n"));
DBG_88E("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n");
goto exit;
}
}
else{
mickey=&stainfo->dot11tkiprxmickey.skey[0];
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("\n recvframe_chkmic: unicast key\n"));
}
datalen=precvframe->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */
pframe=precvframe->u.hdr.rx_data;
payload=pframe+prxattrib->hdrlen+prxattrib->iv_len;
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("\n prxattrib->iv_len=%d prxattrib->icv_len=%d\n",prxattrib->iv_len,prxattrib->icv_len));
rtw_seccalctkipmic(mickey,pframe,payload, datalen ,&miccode[0],(unsigned char)prxattrib->priority); /* care the length of the data */
pframemic=payload+datalen;
bmic_err=false;
for (i=0;i<8;i++){
if (miccode[i] != *(pframemic+i)){
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("recvframe_chkmic:miccode[%d](%02x) != *(pframemic+%d)(%02x) ",i,miccode[i],i,*(pframemic+i)));
bmic_err=true;
}
}
if (bmic_err==true){
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("\n *(pframemic-8)-*(pframemic-1)=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
*(pframemic-8),*(pframemic-7),*(pframemic-6),*(pframemic-5),*(pframemic-4),*(pframemic-3),*(pframemic-2),*(pframemic-1)));
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("\n *(pframemic-16)-*(pframemic-9)=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
*(pframemic-16),*(pframemic-15),*(pframemic-14),*(pframemic-13),*(pframemic-12),*(pframemic-11),*(pframemic-10),*(pframemic-9)));
{
uint i;
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("\n ======demp packet (len=%d)======\n",precvframe->u.hdr.len));
for (i=0;i<precvframe->u.hdr.len;i=i+8){
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x",
*(precvframe->u.hdr.rx_data+i),*(precvframe->u.hdr.rx_data+i+1),
*(precvframe->u.hdr.rx_data+i+2),*(precvframe->u.hdr.rx_data+i+3),
*(precvframe->u.hdr.rx_data+i+4),*(precvframe->u.hdr.rx_data+i+5),
*(precvframe->u.hdr.rx_data+i+6),*(precvframe->u.hdr.rx_data+i+7)));
}
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("\n ======demp packet end [len=%d]======\n",precvframe->u.hdr.len));
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("\n hrdlen=%d,\n",prxattrib->hdrlen));
}
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("ra=0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x psecuritypriv->binstallGrpkey=%d ",
prxattrib->ra[0],prxattrib->ra[1],prxattrib->ra[2],
prxattrib->ra[3],prxattrib->ra[4],prxattrib->ra[5],psecuritypriv->binstallGrpkey));
/* double check key_index for some timing issue , */
/* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
if ((IS_MCAST(prxattrib->ra)==true) && (prxattrib->key_index != pmlmeinfo->key_index ))
brpt_micerror = false;
if ((prxattrib->bdecrypted ==true)&& (brpt_micerror == true))
{
rtw_handle_tkip_mic_err(adapter,(u8)IS_MCAST(prxattrib->ra));
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,(" mic error :prxattrib->bdecrypted=%d ",prxattrib->bdecrypted));
DBG_88E(" mic error :prxattrib->bdecrypted=%d\n",prxattrib->bdecrypted);
}
else
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,(" mic error :prxattrib->bdecrypted=%d ",prxattrib->bdecrypted));
DBG_88E(" mic error :prxattrib->bdecrypted=%d\n",prxattrib->bdecrypted);
}
res=_FAIL;
}
else{
/* mic checked ok */
if ((psecuritypriv->bcheck_grpkey ==false)&&(IS_MCAST(prxattrib->ra)==true)){
psecuritypriv->bcheck_grpkey =true;
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("psecuritypriv->bcheck_grpkey =true"));
}
}
}
else
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("recvframe_chkmic: rtw_get_stainfo==NULL!!!\n"));
}
recvframe_pull_tail(precvframe, 8);
}
exit:
_func_exit_;
return res;
}
/* decrypt and set the ivlen,icvlen of the recv_frame */
union recv_frame * decryptor(struct adapter *padapter,union recv_frame *precv_frame);
union recv_frame * decryptor(struct adapter *padapter,union recv_frame *precv_frame)
{
struct rx_pkt_attrib *prxattrib = &precv_frame->u.hdr.attrib;
struct security_priv *psecuritypriv=&padapter->securitypriv;
union recv_frame *return_packet=precv_frame;
u32 res=_SUCCESS;
_func_enter_;
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("prxstat->decrypted=%x prxattrib->encrypt = 0x%03x\n",prxattrib->bdecrypted,prxattrib->encrypt));
if (prxattrib->encrypt>0)
{
u8 *iv = precv_frame->u.hdr.rx_data+prxattrib->hdrlen;
prxattrib->key_index = ( ((iv[3])>>6)&0x3) ;
if (prxattrib->key_index > WEP_KEYS)
{
DBG_88E("prxattrib->key_index(%d) > WEP_KEYS\n", prxattrib->key_index);
switch (prxattrib->encrypt){
case _WEP40_:
case _WEP104_:
prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
break;
case _TKIP_:
case _AES_:
default:
prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
break;
}
}
}
if ((prxattrib->encrypt>0) && ((prxattrib->bdecrypted==0) ||(psecuritypriv->sw_decrypt==true)))
{
psecuritypriv->hw_decrypted=false;
switch (prxattrib->encrypt){
case _WEP40_:
case _WEP104_:
rtw_wep_decrypt(padapter, (u8 *)precv_frame);
break;
case _TKIP_:
res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
break;
case _AES_:
res = rtw_aes_decrypt(padapter, (u8 * )precv_frame);
break;
default:
break;
}
}
else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 &&
(psecuritypriv->busetkipkey==1 || prxattrib->encrypt !=_TKIP_))
psecuritypriv->hw_decrypted=true;
if (res == _FAIL) {
rtw_free_recvframe(return_packet,&padapter->recvpriv.free_recv_queue);
return_packet = NULL;
}
_func_exit_;
return return_packet;
}
/* set the security information in the recv_frame */
union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame)
{
u8 *psta_addr, *ptr;
uint auth_alg;
struct recv_frame_hdr *pfhdr;
struct sta_info *psta;
struct sta_priv *pstapriv ;
union recv_frame *prtnframe;
u16 ether_type=0;
u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */
struct rx_pkt_attrib *pattrib;
__be16 be_tmp;
_func_enter_;
pstapriv = &adapter->stapriv;
psta = rtw_get_stainfo(pstapriv, psta_addr);
auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
ptr = get_recvframe_data(precv_frame);
pfhdr = &precv_frame->u.hdr;
pattrib = &pfhdr->attrib;
psta_addr = pattrib->ta;
prtnframe = NULL;
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("########portctrl:adapter->securitypriv.dot11AuthAlgrthm=%d\n",adapter->securitypriv.dot11AuthAlgrthm));
if (auth_alg==2)
{
if ((psta!=NULL) && (psta->ieee8021x_blocked))
{
/* blocked */
/* only accept EAPOL frame */
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("########portctrl:psta->ieee8021x_blocked==1\n"));
prtnframe=precv_frame;
/* get ether_type */
ptr=ptr+pfhdr->attrib.hdrlen+pfhdr->attrib.iv_len+LLC_HEADER_SIZE;
_rtw_memcpy(&be_tmp, ptr, 2);
ether_type= ntohs(be_tmp);
if (ether_type == eapol_type) {
prtnframe=precv_frame;
}
else {
/* free this frame */
rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
prtnframe=NULL;
}
}
else
{
/* allowed */
/* check decryption status, and decrypt the frame if needed */
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("########portctrl:psta->ieee8021x_blocked==0\n"));
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("portctrl:precv_frame->hdr.attrib.privacy=%x\n",precv_frame->u.hdr.attrib.privacy));
if (pattrib->bdecrypted == 0)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("portctrl:prxstat->decrypted=%x\n", pattrib->bdecrypted));
}
prtnframe=precv_frame;
/* check is the EAPOL frame or not (Rekey) */
if (ether_type == eapol_type){
RT_TRACE(_module_rtl871x_recv_c_,_drv_notice_,("########portctrl:ether_type == 0x888e\n"));
/* check Rekey */
prtnframe=precv_frame;
}
else{
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("########portctrl:ether_type=0x%04x\n", ether_type));
}
}
}
else
{
prtnframe=precv_frame;
}
_func_exit_;
return prtnframe;
}
int recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache)
{
int tid = precv_frame->u.hdr.attrib.priority;
u16 seq_ctrl = ( (precv_frame->u.hdr.attrib.seq_num&0xffff) << 4) |
(precv_frame->u.hdr.attrib.frag_num & 0xf);
_func_enter_;
if (tid>15)
{
RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_decache, (tid>15)! seq_ctrl=0x%x, tid=0x%x\n", seq_ctrl, tid));
return _FAIL;
}
if (1)/* if (bretry) */
{
if (seq_ctrl == prxcache->tid_rxseq[tid])
{
RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_decache, seq_ctrl=0x%x, tid=0x%x, tid_rxseq=0x%x\n", seq_ctrl, tid, prxcache->tid_rxseq[tid]));
return _FAIL;
}
}
prxcache->tid_rxseq[tid] = seq_ctrl;
_func_exit_;
return _SUCCESS;
}
void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame);
void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame)
{
#ifdef CONFIG_AP_MODE
unsigned char pwrbit;
u8 *ptr = precv_frame->u.hdr.rx_data;
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
struct sta_priv *pstapriv = &padapter->stapriv;
struct sta_info *psta=NULL;
psta = rtw_get_stainfo(pstapriv, pattrib->src);
pwrbit = GetPwrMgt(ptr);
if (psta)
{
if (pwrbit)
{
if (!(psta->state & WIFI_SLEEP_STATE))
{
/* psta->state |= WIFI_SLEEP_STATE; */
/* pstapriv->sta_dz_bitmap |= BIT(psta->aid); */
stop_sta_xmit(padapter, psta);
/* DBG_88E("to sleep, sta_dz_bitmap=%x\n", pstapriv->sta_dz_bitmap); */
}
}
else
{
if (psta->state & WIFI_SLEEP_STATE)
{
/* psta->state ^= WIFI_SLEEP_STATE; */
/* pstapriv->sta_dz_bitmap &= ~BIT(psta->aid); */
wakeup_sta_to_xmit(padapter, psta);
/* DBG_88E("to wakeup, sta_dz_bitmap=%x\n", pstapriv->sta_dz_bitmap); */
}
}
}
#endif
}
void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame);
void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame)
{
#ifdef CONFIG_AP_MODE
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
struct sta_priv *pstapriv = &padapter->stapriv;
struct sta_info *psta=NULL;
psta = rtw_get_stainfo(pstapriv, pattrib->src);
if (!psta) return;
if (!psta->qos_option)
return;
if (!(psta->qos_info&0xf))
return;
if (psta->state&WIFI_SLEEP_STATE) {
u8 wmmps_ac=0;
switch (pattrib->priority)
{
case 1:
case 2:
wmmps_ac = psta->uapsd_bk&BIT(1);
break;
case 4:
case 5:
wmmps_ac = psta->uapsd_vi&BIT(1);
break;
case 6:
case 7:
wmmps_ac = psta->uapsd_vo&BIT(1);
break;
case 0:
case 3:
default:
wmmps_ac = psta->uapsd_be&BIT(1);
break;
}
if (wmmps_ac)
{
if (psta->sleepq_ac_len>0)
{
/* process received triggered frame */
xmit_delivery_enabled_frames(padapter, psta);
}
else
{
/* issue one qos null frame with More data bit = 0 and the EOSP bit set (=1) */
issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
}
}
}
#endif
}
void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info*sta)
{
int sz;
struct sta_info *psta = NULL;
struct stainfo_stats *pstats = NULL;
struct rx_pkt_attrib *pattrib = & prframe->u.hdr.attrib;
struct recv_priv *precvpriv = &padapter->recvpriv;
sz = get_recvframe_len(prframe);
precvpriv->rx_bytes += sz;
padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
if ( (!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst))){
padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
}
if (sta)
psta = sta;
else
psta = prframe->u.hdr.psta;
if (psta)
{
pstats = &psta->sta_stats;
pstats->rx_data_pkts++;
pstats->rx_bytes += sz;
}
}
int sta2sta_data_frame(
struct adapter *adapter,
union recv_frame *precv_frame,
struct sta_info**psta
);
int sta2sta_data_frame(
struct adapter *adapter,
union recv_frame *precv_frame,
struct sta_info**psta
)
{
u8 *ptr = precv_frame->u.hdr.rx_data;
int ret = _SUCCESS;
struct rx_pkt_attrib *pattrib = & precv_frame->u.hdr.attrib;
struct sta_priv *pstapriv = &adapter->stapriv;
struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
u8 *mybssid = get_bssid(pmlmepriv);
u8 *myhwaddr = myid(&adapter->eeprompriv);
u8 * sta_addr = NULL;
int bmcast = IS_MCAST(pattrib->dst);
_func_enter_;
if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
(check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true))
{
/* filter packets that SA is myself or multicast or broadcast */
if (_rtw_memcmp(myhwaddr, pattrib->src, ETH_ALEN)){
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,(" SA==myself\n"));
ret= _FAIL;
goto exit;
}
if ( (!_rtw_memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast) ){
ret= _FAIL;
goto exit;
}
if ( _rtw_memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
_rtw_memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
(!_rtw_memcmp(pattrib->bssid, mybssid, ETH_ALEN)) ) {
ret= _FAIL;
goto exit;
}
sta_addr = pattrib->src;
}
else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)
{
/* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
if (!_rtw_memcmp(pattrib->bssid, pattrib->src, ETH_ALEN) )
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("bssid != TA under STATION_MODE; drop pkt\n"));
ret= _FAIL;
goto exit;
}
sta_addr = pattrib->bssid;
}
else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true)
{
if (bmcast)
{
/* For AP mode, if DA == MCAST, then BSSID should be also MCAST */
if (!IS_MCAST(pattrib->bssid)){
ret= _FAIL;
goto exit;
}
}
else /* not mc-frame */
{
/* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
if (!_rtw_memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
ret= _FAIL;
goto exit;
}
sta_addr = pattrib->src;
}
}
else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
{
_rtw_memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
_rtw_memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
_rtw_memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
_rtw_memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
_rtw_memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
sta_addr = mybssid;
}
else
{
ret = _FAIL;
}
if (bmcast)
*psta = rtw_get_bcmc_stainfo(adapter);
else
*psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */
if (*psta == NULL) {
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("can't get psta under sta2sta_data_frame ; drop pkt\n"));
if (adapter->registrypriv.mp_mode == 1)
{
if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
adapter->mppriv.rx_pktloss++;
}
ret= _FAIL;
goto exit;
}
exit:
_func_exit_;
return ret;
}
int ap2sta_data_frame(
struct adapter *adapter,
union recv_frame *precv_frame,
struct sta_info**psta )
{
u8 *ptr = precv_frame->u.hdr.rx_data;
struct rx_pkt_attrib *pattrib = & precv_frame->u.hdr.attrib;
int ret = _SUCCESS;
struct sta_priv *pstapriv = &adapter->stapriv;
struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
u8 *mybssid = get_bssid(pmlmepriv);
u8 *myhwaddr = myid(&adapter->eeprompriv);
int bmcast = IS_MCAST(pattrib->dst);
_func_enter_;
if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)
&& (check_fwstate(pmlmepriv, _FW_LINKED) == true
|| check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true )
)
{
/* filter packets that SA is myself or multicast or broadcast */
if (_rtw_memcmp(myhwaddr, pattrib->src, ETH_ALEN)){
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,(" SA==myself\n"));
ret= _FAIL;
goto exit;
}
/* da should be for me */
if ((!_rtw_memcmp(myhwaddr, pattrib->dst, ETH_ALEN))&& (!bmcast))
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,
(" ap2sta_data_frame: compare DA fail; DA=%pM\n", (pattrib->dst)));
ret= _FAIL;
goto exit;
}
/* check BSSID */
if ( _rtw_memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
_rtw_memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
(!_rtw_memcmp(pattrib->bssid, mybssid, ETH_ALEN)) )
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,
(" ap2sta_data_frame: compare BSSID fail ; BSSID=%pM\n", (pattrib->bssid)));
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("mybssid=%pM\n", (mybssid)));
if (!bmcast)
{
DBG_88E("issue_deauth to the nonassociated ap=%pM for the reason(7)\n", (pattrib->bssid));
issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
}
ret= _FAIL;
goto exit;
}
if (bmcast)
*psta = rtw_get_bcmc_stainfo(adapter);
else
*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */
if (*psta == NULL) {
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("ap2sta: can't get psta under STATION_MODE ; drop pkt\n"));
ret= _FAIL;
goto exit;
}
/* if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) { */
/* */
if (GetFrameSubType(ptr) & BIT(6)) {
/* No data, will not indicate to upper layer, temporily count it here */
count_rx_stats(adapter, precv_frame, *psta);
ret = RTW_RX_HANDLED;
goto exit;
}
}
else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) &&
(check_fwstate(pmlmepriv, _FW_LINKED) == true) )
{
_rtw_memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
_rtw_memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
_rtw_memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
_rtw_memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
_rtw_memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
/* */
_rtw_memcpy(pattrib->bssid, mybssid, ETH_ALEN);
*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
if (*psta == NULL) {
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("can't get psta under MP_MODE ; drop pkt\n"));
ret= _FAIL;
goto exit;
}
}
else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true)
{
/* Special case */
ret = RTW_RX_HANDLED;
goto exit;
}
else
{
if (_rtw_memcmp(myhwaddr, pattrib->dst, ETH_ALEN)&& (!bmcast))
{
*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
if (*psta == NULL)
{
DBG_88E("issue_deauth to the ap=%pM for the reason(7)\n", (pattrib->bssid));
issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
}
}
ret = _FAIL;
}
exit:
_func_exit_;
return ret;
}
int sta2ap_data_frame(
struct adapter *adapter,
union recv_frame *precv_frame,
struct sta_info**psta )
{
u8 *ptr = precv_frame->u.hdr.rx_data;
struct rx_pkt_attrib *pattrib = & precv_frame->u.hdr.attrib;
struct sta_priv *pstapriv = &adapter->stapriv;
struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
unsigned char *mybssid = get_bssid(pmlmepriv);
int ret=_SUCCESS;
_func_enter_;
if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true)
{
/* For AP mode, RA=BSSID, TX=STA(SRC_ADDR), A3=DST_ADDR */
if (!_rtw_memcmp(pattrib->bssid, mybssid, ETH_ALEN))
{
ret= _FAIL;
goto exit;
}
*psta = rtw_get_stainfo(pstapriv, pattrib->src);
if (*psta == NULL)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("can't get psta under AP_MODE; drop pkt\n"));
DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
ret = RTW_RX_HANDLED;
goto exit;
}
process_pwrbit_data(adapter, precv_frame);
if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) {
process_wmmps_data(adapter, precv_frame);
}
if (GetFrameSubType(ptr) & BIT(6)) {
/* No data, will not indicate to upper layer, temporily count it here */
count_rx_stats(adapter, precv_frame, *psta);
ret = RTW_RX_HANDLED;
goto exit;
}
}
else {
u8 *myhwaddr = myid(&adapter->eeprompriv);
if (!_rtw_memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
ret = RTW_RX_HANDLED;
goto exit;
}
DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
ret = RTW_RX_HANDLED;
goto exit;
}
exit:
_func_exit_;
return ret;
}
int validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame)
{
#ifdef CONFIG_AP_MODE
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
struct sta_priv *pstapriv = &padapter->stapriv;
u8 *pframe = precv_frame->u.hdr.rx_data;
/* uint len = precv_frame->u.hdr.len; */
/* DBG_88E("+validate_recv_ctrl_frame\n"); */
if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
{
return _FAIL;
}
/* receive the frames that ra(a1) is my address */
if (!_rtw_memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
{
return _FAIL;
}
/* only handle ps-poll */
if (GetFrameSubType(pframe) == WIFI_PSPOLL)
{
u16 aid;
u8 wmmps_ac=0;
struct sta_info *psta=NULL;
aid = GetAid(pframe);
psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
if ((psta==NULL) || (psta->aid!=aid))
{
return _FAIL;
}
/* for rx pkt statistics */
psta->sta_stats.rx_ctrl_pkts++;
switch (pattrib->priority)
{
case 1:
case 2:
wmmps_ac = psta->uapsd_bk&BIT(0);
break;
case 4:
case 5:
wmmps_ac = psta->uapsd_vi&BIT(0);
break;
case 6:
case 7:
wmmps_ac = psta->uapsd_vo&BIT(0);
break;
case 0:
case 3:
default:
wmmps_ac = psta->uapsd_be&BIT(0);
break;
}
if (wmmps_ac)
return _FAIL;
if (psta->state & WIFI_STA_ALIVE_CHK_STATE)
{
DBG_88E("%s alive check-rx ps-poll\n", __func__);
psta->expire_to = pstapriv->expire_to;
psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
}
if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid)))
{
unsigned long irqL;
struct list_head *xmitframe_plist, *xmitframe_phead;
struct xmit_frame *pxmitframe=NULL;
_enter_critical_bh(&psta->sleep_q.lock, &irqL);
xmitframe_phead = get_list_head(&psta->sleep_q);
xmitframe_plist = get_next(xmitframe_phead);
if ((rtw_end_of_queue_search(xmitframe_phead, xmitframe_plist)) == false)
{
pxmitframe = LIST_CONTAINOR(xmitframe_plist, struct xmit_frame, list);
xmitframe_plist = get_next(xmitframe_plist);
rtw_list_delete(&pxmitframe->list);
psta->sleepq_len--;
if (psta->sleepq_len>0)
pxmitframe->attrib.mdata = 1;
else
pxmitframe->attrib.mdata = 0;
pxmitframe->attrib.triggered = 1;
/* DBG_88E("handling ps-poll, q_len=%d, tim=%x\n", psta->sleepq_len, pstapriv->tim_bitmap); */
_exit_critical_bh(&psta->sleep_q.lock, &irqL);
if (rtw_hal_xmit(padapter, pxmitframe) == true)
{
rtw_os_xmit_complete(padapter, pxmitframe);
}
_enter_critical_bh(&psta->sleep_q.lock, &irqL);
if (psta->sleepq_len==0)
{
pstapriv->tim_bitmap &= ~BIT(psta->aid);
/* DBG_88E("after handling ps-poll, tim=%x\n", pstapriv->tim_bitmap); */
/* upate BCN for TIM IE */
/* update_BCNTIM(padapter); */
update_beacon(padapter, _TIM_IE_, NULL, false);
}
}
else
{
/* DBG_88E("no buffered packets to xmit\n"); */
if (pstapriv->tim_bitmap&BIT(psta->aid))
{
if (psta->sleepq_len==0)
{
DBG_88E("no buffered packets to xmit\n");
/* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
issue_nulldata(padapter, psta->hwaddr, 0, 0, 0);
}
else
{
DBG_88E("error!psta->sleepq_len=%d\n", psta->sleepq_len);
psta->sleepq_len=0;
}
pstapriv->tim_bitmap &= ~BIT(psta->aid);
/* upate BCN for TIM IE */
/* update_BCNTIM(padapter); */
update_beacon(padapter, _TIM_IE_, NULL, false);
}
}
_exit_critical_bh(&psta->sleep_q.lock, &irqL);
}
}
#endif
return _FAIL;
}
union recv_frame* recvframe_chk_defrag(struct adapter * padapter, union recv_frame *precv_frame);
int validate_recv_mgnt_frame(struct adapter * padapter, union recv_frame *precv_frame)
{
/* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */
RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+validate_recv_mgnt_frame\n"));
precv_frame = recvframe_chk_defrag(padapter, precv_frame);
if (precv_frame == NULL) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,("%s: fragment packet\n",__func__));
return _SUCCESS;
}
{
/* for rx pkt statistics */
struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data));
if (psta) {
psta->sta_stats.rx_mgnt_pkts++;
if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON)
psta->sta_stats.rx_beacon_pkts++;
else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ)
psta->sta_stats.rx_probereq_pkts++;
else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) {
if (_rtw_memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN) == true)
psta->sta_stats.rx_probersp_pkts++;
else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data))
|| is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
psta->sta_stats.rx_probersp_bm_pkts++;
else
psta->sta_stats.rx_probersp_uo_pkts++;
}
}
}
mgt_dispatcher(padapter, precv_frame);
return _SUCCESS;
}
int validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame)
{
u8 bretry;
u8 *psa, *pda, *pbssid;
struct sta_info *psta = NULL;
u8 *ptr = precv_frame->u.hdr.rx_data;
struct rx_pkt_attrib *pattrib = & precv_frame->u.hdr.attrib;
struct sta_priv *pstapriv = &adapter->stapriv;
struct security_priv *psecuritypriv = &adapter->securitypriv;
int ret = _SUCCESS;
_func_enter_;
bretry = GetRetry(ptr);
pda = get_da(ptr);
psa = get_sa(ptr);
pbssid = get_hdr_bssid(ptr);
if (pbssid == NULL){
ret= _FAIL;
goto exit;
}
_rtw_memcpy(pattrib->dst, pda, ETH_ALEN);
_rtw_memcpy(pattrib->src, psa, ETH_ALEN);
_rtw_memcpy(pattrib->bssid, pbssid, ETH_ALEN);
switch (pattrib->to_fr_ds)
{
case 0:
_rtw_memcpy(pattrib->ra, pda, ETH_ALEN);
_rtw_memcpy(pattrib->ta, psa, ETH_ALEN);
ret = sta2sta_data_frame(adapter, precv_frame, &psta);
break;
case 1:
_rtw_memcpy(pattrib->ra, pda, ETH_ALEN);
_rtw_memcpy(pattrib->ta, pbssid, ETH_ALEN);
ret = ap2sta_data_frame(adapter, precv_frame, &psta);
break;
case 2:
_rtw_memcpy(pattrib->ra, pbssid, ETH_ALEN);
_rtw_memcpy(pattrib->ta, psa, ETH_ALEN);
ret = sta2ap_data_frame(adapter, precv_frame, &psta);
break;
case 3:
_rtw_memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
_rtw_memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
ret =_FAIL;
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,(" case 3\n"));
break;
default:
ret =_FAIL;
break;
}
if (ret ==_FAIL){
goto exit;
} else if (ret == RTW_RX_HANDLED) {
goto exit;
}
if (psta==NULL){
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,(" after to_fr_ds_chk; psta==NULL\n"));
ret= _FAIL;
goto exit;
}
/* psta->rssi = prxcmd->rssi; */
/* psta->signal_quality= prxcmd->sq; */
precv_frame->u.hdr.psta = psta;
pattrib->amsdu=0;
pattrib->ack_policy = 0;
/* parsing QC field */
if (pattrib->qos == 1)
{
pattrib->priority = GetPriority((ptr + 24));
pattrib->ack_policy = GetAckpolicy((ptr + 24));
pattrib->amsdu = GetAMsdu((ptr + 24));
pattrib->hdrlen = pattrib->to_fr_ds==3 ? 32 : 26;
if (pattrib->priority!=0 && pattrib->priority!=3)
{
adapter->recvpriv.bIsAnyNonBEPkts = true;
}
}
else
{
pattrib->priority=0;
pattrib->hdrlen = pattrib->to_fr_ds==3 ? 30 : 24;
}
if (pattrib->order)/* HT-CTRL 11n */
{
pattrib->hdrlen += 4;
}
precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
/* decache, drop duplicate recv packets */
if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("decache : drop pkt\n"));
ret= _FAIL;
goto exit;
}
if (pattrib->privacy){
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("validate_recv_data_frame:pattrib->privacy=%x\n", pattrib->privacy));
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("\n ^^^^^^^^^^^IS_MCAST(pattrib->ra(0x%02x))=%d^^^^^^^^^^^^^^^6\n", pattrib->ra[0],IS_MCAST(pattrib->ra)));
GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("\n pattrib->encrypt=%d\n",pattrib->encrypt));
SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
}
else
{
pattrib->encrypt = 0;
pattrib->iv_len = pattrib->icv_len = 0;
}
exit:
_func_exit_;
return ret;
}
int validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame)
{
/* shall check frame subtype, to / from ds, da, bssid */
/* then call check if rx seq/frag. duplicated. */
u8 type;
u8 subtype;
int retval = _SUCCESS;
u8 bDumpRxPkt;
struct rx_pkt_attrib *pattrib = & precv_frame->u.hdr.attrib;
u8 *ptr = precv_frame->u.hdr.rx_data;
u8 ver =(unsigned char) (*ptr)&0x3 ;
struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
_func_enter_;
if (pmlmeext->sitesurvey_res.state == SCAN_PROCESS) {
int ch_set_idx = rtw_ch_set_search_ch(pmlmeext->channel_set, rtw_get_oper_ch(adapter));
if (ch_set_idx >= 0)
pmlmeext->channel_set[ch_set_idx].rx_count++;
}
/* add version chk */
if (ver!=0){
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("validate_recv_data_frame fail! (ver!=0)\n"));
retval= _FAIL;
goto exit;
}
type = GetFrameType(ptr);
subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
pattrib->to_fr_ds = get_tofr_ds(ptr);
pattrib->frag_num = GetFragNum(ptr);
pattrib->seq_num = GetSequence(ptr);
pattrib->pw_save = GetPwrMgt(ptr);
pattrib->mfrag = GetMFrag(ptr);
pattrib->mdata = GetMData(ptr);
pattrib->privacy = GetPrivacy(ptr);
pattrib->order = GetOrder(ptr);
/* Dump rx packets */
rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
if (bDumpRxPkt ==1){/* dump all rx packets */
int i;
DBG_88E("#############################\n");
for (i=0; i<64;i=i+8)
DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
*(ptr+i+1), *(ptr+i+2) ,*(ptr+i+3) ,*(ptr+i+4),*(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
DBG_88E("#############################\n");
}
else if (bDumpRxPkt ==2){
if (type== WIFI_MGT_TYPE){
int i;
DBG_88E("#############################\n");
for (i=0; i<64;i=i+8)
DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
*(ptr+i+1), *(ptr+i+2) ,*(ptr+i+3) ,*(ptr+i+4),*(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
DBG_88E("#############################\n");
}
} else if (bDumpRxPkt ==3){
if (type== WIFI_DATA_TYPE){
int i;
DBG_88E("#############################\n");
for (i=0; i<64;i=i+8)
DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
*(ptr+i+1), *(ptr+i+2) ,*(ptr+i+3) ,*(ptr+i+4),*(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
DBG_88E("#############################\n");
}
}
switch (type) {
case WIFI_MGT_TYPE: /* mgnt */
retval = validate_recv_mgnt_frame(adapter, precv_frame);
if (retval == _FAIL)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("validate_recv_mgnt_frame fail\n"));
}
retval = _FAIL; /* only data frame return _SUCCESS */
break;
case WIFI_CTRL_TYPE: /* ctrl */
retval = validate_recv_ctrl_frame(adapter, precv_frame);
if (retval == _FAIL)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("validate_recv_ctrl_frame fail\n"));
}
retval = _FAIL; /* only data frame return _SUCCESS */
break;
case WIFI_DATA_TYPE: /* data */
rtw_led_control(adapter, LED_CTL_RX);
pattrib->qos = (subtype & BIT(7))? 1:0;
retval = validate_recv_data_frame(adapter, precv_frame);
if (retval == _FAIL) {
struct recv_priv *precvpriv = &adapter->recvpriv;
precvpriv->rx_drop++;
}
break;
default:
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("validate_recv_data_frame fail! type=0x%x\n", type));
retval = _FAIL;
break;
}
exit:
_func_exit_;
return retval;
}
/* remove the wlanhdr and add the eth_hdr */
int wlanhdr_to_ethhdr ( union recv_frame *precvframe)
{
int rmv_len;
u16 eth_type, len;
__be16 be_tmp;
u8 bsnaphdr;
u8 *psnap_type;
struct ieee80211_snap_hdr *psnap;
int ret=_SUCCESS;
struct adapter *adapter =precvframe->u.hdr.adapter;
struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
u8 *ptr = get_recvframe_data(precvframe) ; /* point to frame_ctrl field */
struct rx_pkt_attrib *pattrib = & precvframe->u.hdr.attrib;
_func_enter_;
if (pattrib->encrypt){
recvframe_pull_tail(precvframe, pattrib->icv_len);
}
psnap=(struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
psnap_type=ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
/* convert hdr + possible LLC headers into Ethernet header */
/* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */
if ((_rtw_memcmp(psnap, rtw_rfc1042_header, SNAP_SIZE) &&
(_rtw_memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2) == false) &&
(_rtw_memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2)==false) )||
/* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */
_rtw_memcmp(psnap, rtw_bridge_tunnel_header, SNAP_SIZE)){
/* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
bsnaphdr = true;
} else {
/* Leave Ethernet header part of hdr and full payload */
bsnaphdr = false;
}
rmv_len = pattrib->hdrlen + pattrib->iv_len +(bsnaphdr?SNAP_SIZE:0);
len = precvframe->u.hdr.len - rmv_len;
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("\n===pattrib->hdrlen: %x, pattrib->iv_len:%x ===\n\n", pattrib->hdrlen, pattrib->iv_len));
_rtw_memcpy(&be_tmp, ptr+rmv_len, 2);
eth_type = ntohs(be_tmp); /* pattrib->ether_type */
pattrib->eth_type = eth_type;
if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) {
ptr += rmv_len ;
*ptr = 0x87;
*(ptr+1) = 0x12;
eth_type = 0x8712;
/* append rx status for mp test packets */
ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
_rtw_memcpy(ptr, get_rxmem(precvframe), 24);
ptr+=24;
}
else {
ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+ (bsnaphdr?2:0)));
}
_rtw_memcpy(ptr, pattrib->dst, ETH_ALEN);
_rtw_memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
if (!bsnaphdr) {
be_tmp = htons(len);
_rtw_memcpy(ptr+12, &be_tmp, 2);
}
_func_exit_;
return ret;
}
/* perform defrag */
union recv_frame *recvframe_defrag(struct adapter *adapter, struct __queue *defrag_q)
{
struct list_head *plist, *phead;
u8 wlanhdr_offset;
u8 curfragnum;
struct recv_frame_hdr *pfhdr,*pnfhdr;
union recv_frame* prframe, *pnextrframe;
struct __queue *pfree_recv_queue;
_func_enter_;
curfragnum=0;
pfree_recv_queue=&adapter->recvpriv.free_recv_queue;
phead = get_list_head(defrag_q);
plist = get_next(phead);
prframe = LIST_CONTAINOR(plist, union recv_frame, u);
pfhdr=&prframe->u.hdr;
rtw_list_delete(&(prframe->u.list));
if (curfragnum!=pfhdr->attrib.frag_num)
{
/* the first fragment number must be 0 */
/* free the whole queue */
rtw_free_recvframe(prframe, pfree_recv_queue);
rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
return NULL;
}
curfragnum++;
plist= get_list_head(defrag_q);
plist = get_next(plist);
while (rtw_end_of_queue_search(phead, plist) == false)
{
pnextrframe = LIST_CONTAINOR(plist, union recv_frame , u);
pnfhdr=&pnextrframe->u.hdr;
/* check the fragment sequence (2nd ~n fragment frame) */
if (curfragnum!=pnfhdr->attrib.frag_num)
{
/* the fragment number must be increasing (after decache) */
/* release the defrag_q & prframe */
rtw_free_recvframe(prframe, pfree_recv_queue);
rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
return NULL;
}
curfragnum++;
/* copy the 2nd~n fragment frame's payload to the first fragment */
/* get the 2nd~last fragment frame's payload */
wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
recvframe_pull(pnextrframe, wlanhdr_offset);
/* append to first fragment frame's tail (if privacy frame, pull the ICV) */
recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
/* memcpy */
_rtw_memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
recvframe_put(prframe, pnfhdr->len);
pfhdr->attrib.icv_len=pnfhdr->attrib.icv_len;
plist = get_next(plist);
};
/* free the defrag_q queue and return the prframe */
rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("Performance defrag!!!!!\n"));
_func_exit_;
return prframe;
}
/* check if need to defrag, if needed queue the frame to defrag_q */
union recv_frame* recvframe_chk_defrag(struct adapter * padapter, union recv_frame *precv_frame)
{
u8 ismfrag;
u8 fragnum;
u8 *psta_addr;
struct recv_frame_hdr *pfhdr;
struct sta_info *psta;
struct sta_priv *pstapriv;
struct list_head *phead;
union recv_frame *prtnframe = NULL;
struct __queue *pfree_recv_queue, *pdefrag_q;
_func_enter_;
pstapriv = &padapter->stapriv;
pfhdr = &precv_frame->u.hdr;
pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
/* need to define struct of wlan header frame ctrl */
ismfrag = pfhdr->attrib.mfrag;
fragnum = pfhdr->attrib.frag_num;
psta_addr = pfhdr->attrib.ta;
psta = rtw_get_stainfo(pstapriv, psta_addr);
if (psta == NULL)
{
u8 type = GetFrameType(pfhdr->rx_data);
if (type != WIFI_DATA_TYPE) {
psta = rtw_get_bcmc_stainfo(padapter);
pdefrag_q = &psta->sta_recvpriv.defrag_q;
} else
pdefrag_q = NULL;
}
else
pdefrag_q = &psta->sta_recvpriv.defrag_q;
if ((ismfrag==0) && (fragnum==0))
{
prtnframe = precv_frame;/* isn't a fragment frame */
}
if (ismfrag==1)
{
/* 0~(n-1) fragment frame */
/* enqueue to defraf_g */
if (pdefrag_q != NULL)
{
if (fragnum==0)
{
/* the first fragment */
if (_rtw_queue_empty(pdefrag_q) == false)
{
/* free current defrag_q */
rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
}
}
/* Then enqueue the 0~(n-1) fragment into the defrag_q */
phead = get_list_head(pdefrag_q);
rtw_list_insert_tail(&pfhdr->list, phead);
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("Enqueuq: ismfrag = %d, fragnum= %d\n", ismfrag,fragnum));
prtnframe=NULL;
}
else
{
/* can't find this ta's defrag_queue, so free this recv_frame */
rtw_free_recvframe(precv_frame, pfree_recv_queue);
prtnframe=NULL;
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("Free because pdefrag_q ==NULL: ismfrag = %d, fragnum= %d\n", ismfrag, fragnum));
}
}
if ((ismfrag==0)&&(fragnum!=0))
{
/* the last fragment frame */
/* enqueue the last fragment */
if (pdefrag_q != NULL)
{
phead = get_list_head(pdefrag_q);
rtw_list_insert_tail(&pfhdr->list,phead);
/* call recvframe_defrag to defrag */
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("defrag: ismfrag = %d, fragnum= %d\n", ismfrag, fragnum));
precv_frame = recvframe_defrag(padapter, pdefrag_q);
prtnframe=precv_frame;
}
else
{
/* can't find this ta's defrag_queue, so free this recv_frame */
rtw_free_recvframe(precv_frame, pfree_recv_queue);
prtnframe=NULL;
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("Free because pdefrag_q ==NULL: ismfrag = %d, fragnum= %d\n", ismfrag,fragnum));
}
}
if ((prtnframe!=NULL)&&(prtnframe->u.hdr.attrib.privacy))
{
/* after defrag we must check tkip mic code */
if (recvframe_chkmic(padapter, prtnframe)==_FAIL)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("recvframe_chkmic(padapter, prtnframe)==_FAIL\n"));
rtw_free_recvframe(prtnframe,pfree_recv_queue);
prtnframe=NULL;
}
}
_func_exit_;
return prtnframe;
}
static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe)
{
int a_len, padding_len;
u16 eth_type, nSubframe_Length;
u8 nr_subframes, i;
unsigned char *pdata;
struct rx_pkt_attrib *pattrib;
unsigned char *data_ptr;
struct sk_buff *sub_skb,*subframes[MAX_SUBFRAME_COUNT];
struct recv_priv *precvpriv = &padapter->recvpriv;
struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
int ret = _SUCCESS;
nr_subframes = 0;
pattrib = &prframe->u.hdr.attrib;
recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen);
if (prframe->u.hdr.attrib.iv_len >0)
recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len);
a_len = prframe->u.hdr.len;
pdata = prframe->u.hdr.rx_data;
while (a_len > ETH_HLEN) {
/* Offset 12 denote 2 mac address */
nSubframe_Length = RTW_GET_BE16(pdata + 12);
if ( a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length) ) {
DBG_88E("nRemain_Length is %d and nSubframe_Length is : %d\n",a_len,nSubframe_Length);
goto exit;
}
/* move the data point to data content */
pdata += ETH_HLEN;
a_len -= ETH_HLEN;
/* Allocate new skb for releasing to upper layer */
sub_skb = dev_alloc_skb(nSubframe_Length + 12);
if (sub_skb) {
skb_reserve(sub_skb, 12);
data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
_rtw_memcpy(data_ptr, pdata, nSubframe_Length);
} else {
sub_skb = skb_clone(prframe->u.hdr.pkt, GFP_ATOMIC);
if (sub_skb) {
sub_skb->data = pdata;
sub_skb->len = nSubframe_Length;
skb_set_tail_pointer(sub_skb, nSubframe_Length);
} else {
DBG_88E("skb_clone() Fail!!! , nr_subframes = %d\n",nr_subframes);
break;
}
}
subframes[nr_subframes++] = sub_skb;
if (nr_subframes >= MAX_SUBFRAME_COUNT) {
DBG_88E("ParseSubframe(): Too many Subframes! Packets dropped!\n");
break;
}
pdata += nSubframe_Length;
a_len -= nSubframe_Length;
if (a_len != 0) {
padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
if (padding_len == 4) {
padding_len = 0;
}
if (a_len < padding_len) {
goto exit;
}
pdata += padding_len;
a_len -= padding_len;
}
}
for (i=0; i<nr_subframes; i++){
sub_skb = subframes[i];
/* convert hdr + possible LLC headers into Ethernet header */
eth_type = RTW_GET_BE16(&sub_skb->data[6]);
if (sub_skb->len >= 8 &&
((_rtw_memcmp(sub_skb->data, rtw_rfc1042_header, SNAP_SIZE) &&
eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
_rtw_memcmp(sub_skb->data, rtw_bridge_tunnel_header, SNAP_SIZE) )) {
/* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
skb_pull(sub_skb, SNAP_SIZE);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
} else {
__be16 len;
/* Leave Ethernet header part of hdr and full payload */
len = htons(sub_skb->len);
_rtw_memcpy(skb_push(sub_skb, 2), &len, 2);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
}
/* Indicat the packets to upper layer */
if (sub_skb) {
/* Insert NAT2.5 RX here! */
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 35))
rcu_read_lock();
rcu_read_unlock();
#endif /* (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 35)) */
sub_skb->protocol = eth_type_trans(sub_skb, padapter->pnetdev);
sub_skb->dev = padapter->pnetdev;
sub_skb->ip_summed = CHECKSUM_NONE;
netif_rx(sub_skb);
}
}
exit:
prframe->u.hdr.len=0;
rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
return ret;
}
static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
{
u8 wsize = preorder_ctrl->wsize_b;
u16 wend = (preorder_ctrl->indicate_seq + wsize -1) & 0xFFF;/* 4096; */
/* Rx Reorder initialize condition. */
if (preorder_ctrl->indicate_seq == 0xFFFF)
preorder_ctrl->indicate_seq = seq_num;
/* Drop out the packet which SeqNum is smaller than WinStart */
if ( SN_LESS(seq_num, preorder_ctrl->indicate_seq) )
return false;
/* */
/* Sliding window manipulation. Conditions includes: */
/* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
/* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */
/* */
if ( SN_EQUAL(seq_num, preorder_ctrl->indicate_seq) )
{
preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
}
else if (SN_LESS(wend, seq_num))
{
if (seq_num >= (wsize - 1))
preorder_ctrl->indicate_seq = seq_num + 1 -wsize;
else
preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
}
return true;
}
int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe);
int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe)
{
struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
struct list_head *phead, *plist;
union recv_frame *pnextrframe;
struct rx_pkt_attrib *pnextattrib;
phead = get_list_head(ppending_recvframe_queue);
plist = get_next(phead);
while (rtw_end_of_queue_search(phead, plist) == false) {
pnextrframe = LIST_CONTAINOR(plist, union recv_frame, u);
pnextattrib = &pnextrframe->u.hdr.attrib;
if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
plist = get_next(plist);
else if ( SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
return false;
else
break;
}
rtw_list_delete(&(prframe->u.hdr.list));
rtw_list_insert_tail(&(prframe->u.hdr.list), plist);
return true;
}
static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
{
struct list_head *phead, *plist;
union recv_frame *prframe;
struct rx_pkt_attrib *pattrib;
int bPktInBuf = false;
struct recv_priv *precvpriv = &padapter->recvpriv;
struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
phead = get_list_head(ppending_recvframe_queue);
plist = get_next(phead);
/* Handling some condition for forced indicate case. */
if (bforced==true) {
if (rtw_is_list_empty(phead))
return true;
prframe = LIST_CONTAINOR(plist, union recv_frame, u);
pattrib = &prframe->u.hdr.attrib;
preorder_ctrl->indicate_seq = pattrib->seq_num;
}
/* Prepare indication list and indication. */
/* Check if there is any packet need indicate. */
while (!rtw_is_list_empty(phead)) {
prframe = LIST_CONTAINOR(plist, union recv_frame, u);
pattrib = &prframe->u.hdr.attrib;
if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
("recv_indicatepkts_in_order: indicate=%d seq=%d amsdu=%d\n",
preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu));
plist = get_next(plist);
rtw_list_delete(&(prframe->u.hdr.list));
if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num))
preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
/* Set this as a lock to make sure that only one thread is indicating packet. */
/* indicate this recv_frame */
if (!pattrib->amsdu)
{
if ((padapter->bDriverStopped == false) &&
(padapter->bSurpriseRemoved == false))
{
rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
}
}
else if (pattrib->amsdu==1)
{
if (amsdu_to_msdu(padapter, prframe)!=_SUCCESS)
{
rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
}
}
else
{
/* error condition; */
}
/* Update local variables. */
bPktInBuf = false;
}
else
{
bPktInBuf = true;
break;
}
}
return bPktInBuf;
}
static int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe)
{
unsigned long irql;
int retval = _SUCCESS;
struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl;
struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
if (!pattrib->amsdu)
{
/* s1. */
wlanhdr_to_ethhdr(prframe);
if ((pattrib->qos!=1) /*|| pattrib->priority!=0 || IS_MCAST(pattrib->ra)*/
|| (pattrib->eth_type==0x0806) || (pattrib->ack_policy!=0))
{
if ((padapter->bDriverStopped == false) &&
(padapter->bSurpriseRemoved == false))
{
RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ recv_indicatepkt_reorder -recv_func recv_indicatepkt\n" ));
rtw_recv_indicatepkt(padapter, prframe);
return _SUCCESS;
}
return _FAIL;
}
if (preorder_ctrl->enable == false)
{
/* indicate this recv_frame */
preorder_ctrl->indicate_seq = pattrib->seq_num;
rtw_recv_indicatepkt(padapter, prframe);
preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
return _SUCCESS;
}
}
else if (pattrib->amsdu==1) /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
{
if (preorder_ctrl->enable == false)
{
preorder_ctrl->indicate_seq = pattrib->seq_num;
retval = amsdu_to_msdu(padapter, prframe);
preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
return retval;
}
}
else
{
}
_enter_critical_bh(&ppending_recvframe_queue->lock, &irql);
RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
("recv_indicatepkt_reorder: indicate=%d seq=%d\n",
preorder_ctrl->indicate_seq, pattrib->seq_num));
/* s2. check if winstart_b(indicate_seq) needs to been updated */
if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num))
{
rtw_recv_indicatepkt(padapter, prframe);
_exit_critical_bh(&ppending_recvframe_queue->lock, &irql);
goto _success_exit;
}
/* s3. Insert all packet into Reorder Queue to maintain its ordering. */
if (!enqueue_reorder_recvframe(preorder_ctrl, prframe))
goto _err_exit;
/* s4. */
/* Indication process. */
/* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
/* with the SeqNum smaller than latest WinStart and buffer other packets. */
/* */
/* For Rx Reorder condition: */
/* 1. All packets with SeqNum smaller than WinStart => Indicate */
/* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
/* */
/* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false)==true)
{
_set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
_exit_critical_bh(&ppending_recvframe_queue->lock, &irql);
}
else
{
_exit_critical_bh(&ppending_recvframe_queue->lock, &irql);
_cancel_timer_ex(&preorder_ctrl->reordering_ctrl_timer);
}
_success_exit:
return _SUCCESS;
_err_exit:
_exit_critical_bh(&ppending_recvframe_queue->lock, &irql);
return _FAIL;
}
void rtw_reordering_ctrl_timeout_handler(void *pcontext)
{
unsigned long irql;
struct recv_reorder_ctrl *preorder_ctrl = (struct recv_reorder_ctrl *)pcontext;
struct adapter *padapter = preorder_ctrl->padapter;
struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
if (padapter->bDriverStopped ||padapter->bSurpriseRemoved)
{
return;
}
/* DBG_88E("+rtw_reordering_ctrl_timeout_handler()=>\n"); */
_enter_critical_bh(&ppending_recvframe_queue->lock, &irql);
if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true)==true)
{
_set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
}
_exit_critical_bh(&ppending_recvframe_queue->lock, &irql);
}
int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe);
int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe)
{
int retval = _SUCCESS;
/* struct recv_priv *precvpriv = &padapter->recvpriv; */
/* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
#ifdef CONFIG_80211N_HT
struct ht_priv *phtpriv = &pmlmepriv->htpriv;
if (phtpriv->ht_option==true) /* B/G/N Mode */
{
/* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
if (recv_indicatepkt_reorder(padapter, prframe)!=_SUCCESS)/* including perform A-MPDU Rx Ordering Buffer Control */
{
if ((padapter->bDriverStopped == false) &&
(padapter->bSurpriseRemoved == false))
{
retval = _FAIL;
return retval;
}
}
}
else /* B/G mode */
#endif
{
retval=wlanhdr_to_ethhdr (prframe);
if (retval != _SUCCESS)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("wlanhdr_to_ethhdr: drop pkt\n"));
return retval;
}
if ((padapter->bDriverStopped ==false)&&( padapter->bSurpriseRemoved==false))
{
/* indicate this recv_frame */
RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func recv_indicatepkt\n" ));
rtw_recv_indicatepkt(padapter, prframe);
}
else
{
RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func free_indicatepkt\n" ));
RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
retval = _FAIL;
return retval;
}
}
return retval;
}
static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe)
{
int ret = _SUCCESS;
struct rx_pkt_attrib *pattrib = &rframe->u.hdr.attrib;
struct recv_priv *precvpriv = &padapter->recvpriv;
struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
if (padapter->registrypriv.mp_mode == 1)
{
if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true))/* padapter->mppriv.check_mp_pkt == 0)) */
{
if (pattrib->crc_err == 1)
padapter->mppriv.rx_crcerrpktcount++;
else
padapter->mppriv.rx_pktcount++;
if (check_fwstate(pmlmepriv, WIFI_MP_LPBK_STATE) == false) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_alert_, ("MP - Not in loopback mode , drop pkt\n"));
ret = _FAIL;
rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
goto exit;
}
}
}
/* check the frame crtl field and decache */
ret = validate_recv_frame(padapter, rframe);
if (ret != _SUCCESS)
{
RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recv_func: validate_recv_frame fail! drop pkt\n"));
rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
goto exit;
}
exit:
return ret;
}
static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe)
{
int ret = _SUCCESS;
union recv_frame *orig_prframe = prframe;
struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
struct recv_priv *precvpriv = &padapter->recvpriv;
struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
/* DATA FRAME */
rtw_led_control(padapter, LED_CTL_RX);
prframe = decryptor(padapter, prframe);
if (prframe == NULL) {
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("decryptor: drop pkt\n"));
ret = _FAIL;
goto _recv_data_drop;
}
prframe = recvframe_chk_defrag(padapter, prframe);
if (prframe==NULL) {
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("recvframe_chk_defrag: drop pkt\n"));
goto _recv_data_drop;
}
prframe=portctrl(padapter, prframe);
if (prframe == NULL) {
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("portctrl: drop pkt\n"));
ret = _FAIL;
goto _recv_data_drop;
}
count_rx_stats(padapter, prframe, NULL);
#ifdef CONFIG_80211N_HT
ret = process_recv_indicatepkts(padapter, prframe);
if (ret != _SUCCESS)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("recv_func: process_recv_indicatepkts fail!\n"));
rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
goto _recv_data_drop;
}
#else /* CONFIG_80211N_HT */
if (!pattrib->amsdu)
{
ret = wlanhdr_to_ethhdr (prframe);
if (ret != _SUCCESS)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_err_,("wlanhdr_to_ethhdr: drop pkt\n"));
rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
goto _recv_data_drop;
}
if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false))
{
RT_TRACE(_module_rtl871x_recv_c_, _drv_alert_, ("@@@@ recv_func: recv_func rtw_recv_indicatepkt\n" ));
/* indicate this recv_frame */
ret = rtw_recv_indicatepkt(padapter, prframe);
if (ret != _SUCCESS)
{
goto _recv_data_drop;
}
}
else
{
RT_TRACE(_module_rtl871x_recv_c_, _drv_alert_, ("@@@@ recv_func: rtw_free_recvframe\n" ));
RT_TRACE(_module_rtl871x_recv_c_, _drv_debug_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
ret = _FAIL;
rtw_free_recvframe(orig_prframe, pfree_recv_queue); /* free this recv_frame */
}
}
else if (pattrib->amsdu==1)
{
ret = amsdu_to_msdu(padapter, prframe);
if (ret != _SUCCESS)
{
rtw_free_recvframe(orig_prframe, pfree_recv_queue);
goto _recv_data_drop;
}
}
else
{
goto _recv_data_drop;
}
#endif /* CONFIG_80211N_HT */
_exit_recv_func:
return ret;
_recv_data_drop:
precvpriv->rx_drop++;
return ret;
}
int recv_func(struct adapter *padapter, union recv_frame *rframe);
int recv_func(struct adapter *padapter, union recv_frame *rframe)
{
int ret;
struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib;
struct recv_priv *recvpriv = &padapter->recvpriv;
struct security_priv *psecuritypriv=&padapter->securitypriv;
struct mlme_priv *mlmepriv = &padapter->mlmepriv;
/* check if need to handle uc_swdec_pending_queue*/
if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey)
{
union recv_frame *pending_frame;
unsigned long irqL;
while ((pending_frame=rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
if (recv_func_posthandle(padapter, pending_frame) == _SUCCESS)
DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__);
}
}
ret = recv_func_prehandle(padapter, rframe);
if (ret == _SUCCESS) {
/* check if need to enqueue into uc_swdec_pending_queue*/
if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
!IS_MCAST(prxattrib->ra) && prxattrib->encrypt>0 &&
(prxattrib->bdecrypted == 0 ||psecuritypriv->sw_decrypt == true) &&
!is_wep_enc(psecuritypriv->dot11PrivacyAlgrthm) &&
!psecuritypriv->busetkipkey) {
rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
DBG_88E("%s: no key, enqueue uc_swdec_pending_queue\n", __func__);
goto exit;
}
ret = recv_func_posthandle(padapter, rframe);
}
exit:
return ret;
}
s32 rtw_recv_entry(union recv_frame *precvframe)
{
struct adapter *padapter;
struct recv_priv *precvpriv;
s32 ret=_SUCCESS;
_func_enter_;
/* RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("+rtw_recv_entry\n")); */
padapter = precvframe->u.hdr.adapter;
precvpriv = &padapter->recvpriv;
if ((ret = recv_func(padapter, precvframe)) == _FAIL)
{
RT_TRACE(_module_rtl871x_recv_c_,_drv_info_,("rtw_recv_entry: recv_func return fail!!!\n"));
goto _recv_entry_drop;
}
precvpriv->rx_pkts++;
_func_exit_;
return ret;
_recv_entry_drop:
if (padapter->registrypriv.mp_mode == 1)
padapter->mppriv.rx_pktloss = precvpriv->rx_drop;
_func_exit_;
return ret;
}
void rtw_signal_stat_timer_hdl(RTW_TIMER_HDL_ARGS){
struct adapter *adapter = (struct adapter *)FunctionContext;
struct recv_priv *recvpriv = &adapter->recvpriv;
u32 tmp_s, tmp_q;
u8 avg_signal_strength = 0;
u8 avg_signal_qual = 0;
#if defined(DBG_RX_SIGNAL_DISPLAY_PROCESSING)
u32 num_signal_strength = 0;
#endif
#if defined(DBG_RX_SIGNAL_DISPLAY_PROCESSING)
u32 num_signal_qual = 0;
#endif
u8 _alpha = 3; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */
if (adapter->recvpriv.is_signal_dbg) {
/* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
adapter->recvpriv.signal_strength= adapter->recvpriv.signal_strength_dbg;
adapter->recvpriv.rssi=(s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
} else {
if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */
avg_signal_strength = recvpriv->signal_strength_data.avg_val;
#if defined(DBG_RX_SIGNAL_DISPLAY_PROCESSING)
num_signal_strength = recvpriv->signal_strength_data.total_num;
#endif
/* after avg_vals are accquired, we can re-stat the signal values */
recvpriv->signal_strength_data.update_req = 1;
}
if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */
avg_signal_qual = recvpriv->signal_qual_data.avg_val;
#if defined(DBG_RX_SIGNAL_DISPLAY_PROCESSING)
num_signal_qual = recvpriv->signal_qual_data.total_num;
#endif
/* after avg_vals are accquired, we can re-stat the signal values */
recvpriv->signal_qual_data.update_req = 1;
}
/* update value of signal_strength, rssi, signal_qual */
if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == false) {
tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength);
if (tmp_s %_alpha)
tmp_s = tmp_s/_alpha + 1;
else
tmp_s = tmp_s/_alpha;
if (tmp_s>100)
tmp_s = 100;
tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual);
if (tmp_q %_alpha)
tmp_q = tmp_q/_alpha + 1;
else
tmp_q = tmp_q/_alpha;
if (tmp_q>100)
tmp_q = 100;
recvpriv->signal_strength = tmp_s;
recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
recvpriv->signal_qual = tmp_q;
#if defined(DBG_RX_SIGNAL_DISPLAY_PROCESSING)
DBG_88E("%s signal_strength:%3u, rssi:%3d, signal_qual:%3u"
", num_signal_strength:%u, num_signal_qual:%u"
"\n"
, __func__
, recvpriv->signal_strength
, recvpriv->rssi
, recvpriv->signal_qual
, num_signal_strength, num_signal_qual
);
#endif
}
}
rtw_set_signal_stat_timer(recvpriv);
}
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