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rtl8188eu/core/rtw_recv.c
Larry Finger 594a5a050d rtl8188eu: Fix builds for branch v4.1.8_9499 for newer kernels 
These changes allow builds up through kernel 4.16.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
2018-04-11 10:19:48 -05:00

2943 lines
82 KiB
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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 <drv_conf.h>
#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 <usb_osintf.h>
#ifdef CONFIG_BT_COEXIST
#include <rtl8723a_hal.h>
#endif
#include <wifi.h>
#include <circ_buf.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
void rtw_signal_stat_timer_hdl(RTW_TIMER_HDL_ARGS);
#else
void rtw_signal_stat_timer_hdl(struct timer_list *t);
#endif
void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
{
;
memset((u8 *)psta_recvpriv, 0, sizeof (struct sta_recv_priv));
spin_lock_init(&psta_recvpriv->lock);
_rtw_init_queue(&psta_recvpriv->defrag_q);
;
}
sint _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
{
sint i;
union recv_frame *precvframe;
sint res =_SUCCESS;
;
/* We don't need to memset padapter->XXX to zero, because adapter is allocated by rtw_zvmalloc(). */
/* memset((unsigned char *)precvpriv, 0, sizeof (struct recv_priv)); */
spin_lock_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;
}
/* memset(precvpriv->pallocated_frame_buf, 0, NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ); */
precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ);
/* precvpriv->precv_frame_buf = precvpriv->pallocated_frame_buf + RXFRAME_ALIGN_SZ - */
/* ((SIZE_PTR) (precvpriv->pallocated_frame_buf) &(RXFRAME_ALIGN_SZ-1)); */
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);
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
_init_timer(&precvpriv->signal_stat_timer, padapter->pnetdev, RTW_TIMER_HDL_NAME(signal_stat), padapter);
#else
timer_setup(&precvpriv->signal_stat_timer, RTW_TIMER_HDL_NAME(signal_stat), 0);
#endif
precvpriv->signal_stat_sampling_interval = 1000; /* ms */
rtw_set_signal_stat_timer(precvpriv);
exit:
return res;
}
void _rtw_free_recv_priv (struct recv_priv *precvpriv)
{
struct adapter *padapter = precvpriv->adapter;
rtw_free_uc_swdec_pending_queue(padapter);
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);
;
}
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;
;
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--;
}
}
;
return precvframe;
}
union recv_frame *rtw_alloc_recvframe (struct __queue *pfree_recv_queue)
{
unsigned long irqL;
union recv_frame *precvframe;
spin_lock_bh(&pfree_recv_queue->lock);
precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
spin_unlock_bh(&pfree_recv_queue->lock);
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;
if (precvframe->u.hdr.pkt) {
rtw_skb_free(precvframe->u.hdr.pkt);/* free skb by driver */
precvframe->u.hdr.pkt = NULL;
}
spin_lock_bh(&pfree_recv_queue->lock);
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++;
}
spin_unlock_bh(&pfree_recv_queue->lock);
return _SUCCESS;
}
sint _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
{
struct adapter *padapter =precvframe->u.hdr.adapter;
struct recv_priv *precvpriv = &padapter->recvpriv;
;
/* _rtw_init_listhead(&(precvframe->u.hdr.list)); */
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++;
}
;
return _SUCCESS;
}
sint rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
{
sint ret;
unsigned long irqL;
spin_lock_bh(&queue->lock);
ret = _rtw_enqueue_recvframe(precvframe, queue);
spin_unlock_bh(&queue->lock);
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;
;
_rtw_spinlock(&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);
}
_rtw_spinunlock(&pframequeue->lock);
;
}
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);
cnt++;
}
if (cnt)
DBG_88E(FUNC_ADPT_FMT" dequeue %d\n", FUNC_ADPT_ARG(adapter), cnt);
return cnt;
}
sint rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue)
{
unsigned long irqL;
spin_lock_bh(&queue->lock);
rtw_list_delete(&precvbuf->list);
rtw_list_insert_head(&precvbuf->list, get_list_head(queue));
spin_unlock_bh(&queue->lock);
return _SUCCESS;
}
sint 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;
}
sint recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe);
sint recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe) {
sint i, res =_SUCCESS;
u32 datalen;
u8 miccode[8];
u8 bmic_err =false, brpt_micerror = true;
u8 *pframe, *payload,*pframemic;
u8 *mickey;
/* u8 *iv, rxdata_key_idx =0; */
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);
;
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.skey[0]; */
/* iv = precvframe->u.hdr.rx_data+prxattrib->hdrlen; */
/* rxdata_key_idx =( ((iv[3])>>6)&0x3) ; */
mickey =&psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic: bcmc key\n"));
/* DBG_88E("\n recvframe_chkmic: bcmc key psecuritypriv->dot118021XGrpKeyid(%d), pmlmeinfo->key_index(%d) , recv key_id(%d)\n", */
/* psecuritypriv->dot118021XGrpKeyid, pmlmeinfo->key_index, rxdata_key_idx); */
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:
;
return res;
}
/* decrypt and set the ivlen, icvlen of the recv_frame */
static 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;
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;
#ifdef DBG_RX_DECRYPTOR
DBG_88E("prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n"
, prxattrib->bdecrypted , prxattrib->encrypt, psecuritypriv->hw_decrypted);
#endif
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;
#ifdef DBG_RX_DECRYPTOR
DBG_88E("prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n"
, prxattrib->bdecrypted , prxattrib->encrypt, psecuritypriv->hw_decrypted);
#endif
} else {
#ifdef DBG_RX_DECRYPTOR
DBG_88E("prxstat->bdecrypted:%d, prxattrib->encrypt:%d, psecuritypriv->hw_decrypted:%d\n"
, prxattrib->bdecrypted , prxattrib->encrypt, psecuritypriv->hw_decrypted);
#endif
}
if (res == _FAIL)
{
rtw_free_recvframe(return_packet,&padapter->recvpriv.free_recv_queue);
return_packet = NULL;
}
else {
prxattrib->bdecrypted = true;
}
return return_packet;
}
/* set the security information in the recv_frame */
static 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;
;
pstapriv = &adapter->stapriv;
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;
psta = rtw_get_stainfo(pstapriv, psta_addr);
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;
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;
}
;
return prtnframe;
}
sint recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache);
sint recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache)
{
sint 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);
;
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;
;
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
}
static 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;
}
}
sint sta2sta_data_frame(
struct adapter *adapter,
union recv_frame *precv_frame,
struct sta_info**psta
);
sint sta2sta_data_frame(
struct adapter *adapter,
union recv_frame *precv_frame,
struct sta_info**psta
)
{
u8 *ptr = precv_frame->u.hdr.rx_data;
sint 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;
sint bmcast = IS_MCAST(pattrib->dst);
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)
{
memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
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"));
ret = _FAIL;
goto exit;
}
exit:
;
return ret;
}
sint ap2sta_data_frame(
struct adapter *adapter,
union recv_frame *precv_frame,
struct sta_info**psta );
sint 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;
sint ret = _SUCCESS;
struct sta_priv *pstapriv = &adapter->stapriv;
struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
u8 *mybssid = get_bssid(pmlmepriv);
u8 *myhwaddr = myid(&adapter->eeprompriv);
sint bmcast = IS_MCAST(pattrib->dst);
;
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"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s SA ="MAC_FMT", myhwaddr ="MAC_FMT"\n",
__FUNCTION__, MAC_ARG(pattrib->src), MAC_ARG(myhwaddr));
#endif
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 ="MAC_FMT"\n", MAC_ARG(pattrib->dst)));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s DA ="MAC_FMT"\n", __func__, MAC_ARG(pattrib->dst));
#endif
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 ="MAC_FMT"\n", MAC_ARG(pattrib->bssid)));
RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("mybssid ="MAC_FMT"\n", MAC_ARG(mybssid)));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s BSSID ="MAC_FMT", mybssid ="MAC_FMT"\n",
__FUNCTION__, MAC_ARG(pattrib->bssid), MAC_ARG(mybssid));
DBG_88E( "this adapter = %d, buddy adapter = %d\n", adapter->adapter_type, adapter->pbuddy_adapter->adapter_type );
#endif
if (!bmcast)
{
DBG_88E("issue_deauth to the nonassociated ap =" MAC_FMT " for the reason(7)\n", MAC_ARG(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"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s can't get psta under STATION_MODE ; drop pkt\n", __FUNCTION__);
#endif
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) )
{
memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
/* */
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"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s can't get psta under WIFI_MP_STATE ; drop pkt\n", __FUNCTION__);
#endif
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 =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->bssid));
issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
}
}
ret = _FAIL;
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s fw_state:0x%x\n", __FUNCTION__, get_fwstate(pmlmepriv));
#endif
}
exit:
;
return ret;
}
sint sta2ap_data_frame(
struct adapter *adapter,
union recv_frame *precv_frame,
struct sta_info**psta );
sint 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);
sint ret =_SUCCESS;
;
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 =" MAC_FMT " for the reason(7)\n", MAC_ARG(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 =" MAC_FMT " for the reason(7)\n", MAC_ARG(pattrib->src));
issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
ret = RTW_RX_HANDLED;
goto exit;
}
exit:
;
return ret;
}
sint validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame);
sint 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;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
/* spin_lock_bh(&psta->sleep_q.lock); */
spin_lock_bh(&pxmitpriv->lock);
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); */
rtw_hal_xmitframe_enqueue(padapter, pxmitframe);
if (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);
}
/* spin_unlock_bh(&psta->sleep_q.lock); */
spin_unlock_bh(&pxmitpriv->lock);
}
else
{
/* spin_unlock_bh(&psta->sleep_q.lock); */
spin_unlock_bh(&pxmitpriv->lock);
/* 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);
}
}
}
}
#endif
return _FAIL;
}
union recv_frame* recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame);
sint validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame);
sint validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame)
{
/* struct mlme_priv *pmlmepriv = &padapter->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", __FUNCTION__));
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;
}
sint validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame);
sint 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;
sint ret = _SUCCESS;
bretry = GetRetry(ptr);
pda = get_da(ptr);
psa = get_sa(ptr);
pbssid = get_hdr_bssid(ptr);
if (pbssid == NULL) {
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s pbssid == NULL\n", __func__);
#endif
ret = _FAIL;
goto exit;
}
memcpy(pattrib->dst, pda, ETH_ALEN);
memcpy(pattrib->src, psa, ETH_ALEN);
memcpy(pattrib->bssid, pbssid, ETH_ALEN);
switch (pattrib->to_fr_ds)
{
case 0:
memcpy(pattrib->ra, pda, ETH_ALEN);
memcpy(pattrib->ta, psa, ETH_ALEN);
ret = sta2sta_data_frame(adapter, precv_frame, &psta);
break;
case 1:
memcpy(pattrib->ra, pda, ETH_ALEN);
memcpy(pattrib->ta, pbssid, ETH_ALEN);
ret = ap2sta_data_frame(adapter, precv_frame, &psta);
break;
case 2:
memcpy(pattrib->ra, pbssid, ETH_ALEN);
memcpy(pattrib->ta, psa, ETH_ALEN);
ret = sta2ap_data_frame(adapter, precv_frame, &psta);
break;
case 3:
memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
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) {
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s case:%d, res:%d\n", __FUNCTION__, pattrib->to_fr_ds, ret);
#endif
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"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s psta == NULL\n", __func__);
#endif
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"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s recv_decache return _FAIL\n", __func__);
#endif
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:
;
return ret;
}
#ifdef CONFIG_IEEE80211W
static sint validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame)
{
struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
struct rx_pkt_attrib *pattrib = & precv_frame->u.hdr.attrib;
u8 *ptr = precv_frame->u.hdr.rx_data;
u8 type;
u8 subtype;
type = GetFrameType(ptr);
subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
/* only support station mode */
if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED)
&& adapter->securitypriv.binstallBIPkey == true)
{
/* unicast management frame decrypt */
if (pattrib->privacy && !(IS_MCAST(GetAddr1Ptr(ptr))) &&
(subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION))
{
u8 *ppp, *mgmt_DATA;
u32 data_len =0;
ppp = GetAddr2Ptr(ptr);
pattrib->bdecrypted = 0;
pattrib->encrypt = _AES_;
pattrib->hdrlen = sizeof(struct rtw_ieee80211_hdr_3addr);
/* set iv and icv length */
SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
/* actual management data frame body */
data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
mgmt_DATA = rtw_zmalloc(data_len);
if (mgmt_DATA == NULL)
{
DBG_88E("%s mgmt allocate fail !!!!!!!!!\n", __FUNCTION__);
goto validate_80211w_fail;
}
/*/* dump the packet content before decrypt */
{
int pp;
printk("pattrib->pktlen = %d =>", pattrib->pkt_len);
for (pp =0;pp< pattrib->pkt_len; pp++)
printk(" %02x ", ptr[pp]);
printk("\n");
}*/
precv_frame = decryptor(adapter, precv_frame);
/* save actual management data frame body */
memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len);
/* overwrite the iv field */
memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len);
/* remove the iv and icv length */
pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len;
rtw_mfree(mgmt_DATA, data_len);
/*/* print packet content after decryption */
{
int pp;
printk("after decryption pattrib->pktlen = %d @@=>", pattrib->pkt_len);
for (pp =0;pp< pattrib->pkt_len; pp++)
printk(" %02x ", ptr[pp]);
printk("\n");
}*/
if (!precv_frame)
{
DBG_88E("%s mgmt descrypt fail !!!!!!!!!\n", __FUNCTION__);
goto validate_80211w_fail;
}
}
else if (IS_MCAST(GetAddr1Ptr(ptr)) &&
(subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC))
{
sint BIP_ret = _SUCCESS;
/* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */
BIP_ret = rtw_BIP_verify(adapter, (u8 * )precv_frame);
if (BIP_ret == _FAIL)
{
/* DBG_88E("802.11w BIP verify fail\n"); */
goto validate_80211w_fail;
}
else if (BIP_ret == RTW_RX_HANDLED)
{
/* DBG_88E("802.11w recv none protected packet\n"); */
/* issue sa query request */
issue_action_SA_Query(adapter, NULL, 0, 0);
goto validate_80211w_fail;
}
}/* 802.11w protect */
else
{
if (subtype == WIFI_ACTION)
{
/* according 802.11-2012 standard, these five types are not robust types */
if ( ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC &&
ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT &&
ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM &&
ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED &&
ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P)
{
DBG_88E("action frame category =%d should robust\n", ptr[WLAN_HDR_A3_LEN]);
goto validate_80211w_fail;
}
}
else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)
{
DBG_88E("802.11w recv none protected packet\n");
/* issue sa query request */
issue_action_SA_Query(adapter, NULL, 0, 0);
goto validate_80211w_fail;
}
}
}
return _SUCCESS;
validate_80211w_fail:
return _FAIL;
}
#endif /* CONFIG_IEEE80211W */
sint validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame);
sint 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;
sint retval = _SUCCESS;
struct rx_pkt_attrib *pattrib = & precv_frame->u.hdr.attrib;
u8 bDumpRxPkt;
u8 *ptr = precv_frame->u.hdr.rx_data;
u8 ver =(unsigned char) (*ptr)&0x3 ;
#ifdef CONFIG_AP_MODE
struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
#endif
#ifdef CONFIG_AP_MODE
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++;
}
#endif
/* 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);
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 */
#ifdef CONFIG_IEEE80211W
if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL)
{
retval = _FAIL;
break;
}
#endif /* CONFIG_IEEE80211W */
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;
/* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail\n")); */
precvpriv->rx_drop++;
}
break;
default:
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type =0x%x\n", type));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME validate_recv_data_frame fail! type =0x%x\n", type);
#endif
retval = _FAIL;
break;
}
exit:
;
return retval;
}
/* remove the wlanhdr and add the eth_hdr */
static sint wlanhdr_to_ethhdr ( union recv_frame *precvframe)
{
sint rmv_len;
u16 eth_type, len;
u8 bsnaphdr;
u8 *psnap_type;
struct ieee80211_snap_hdr *psnap;
__be16 be_tmp;
sint 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;
;
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));
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);
memcpy(ptr, get_rxmem(precvframe), 24);
ptr+=24;
}
else {
ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+ (bsnaphdr?2:0)));
}
memcpy(ptr, pattrib->dst, ETH_ALEN);
memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
if (!bsnaphdr) {
be_tmp = htons(len);
memcpy(ptr+12, &be_tmp, 2);
}
;
return ret;
}
/* perform defrag */
static union recv_frame * recvframe_defrag(struct adapter *adapter, struct __queue *defrag_q)
{
struct list_head *plist, *phead;
u8 *data, wlanhdr_offset;
u8 curfragnum;
struct recv_frame_hdr *pfhdr,*pnfhdr;
union recv_frame* prframe, *pnextrframe;
struct __queue *pfree_recv_queue;
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;
if (!pfhdr) {
pr_err("pfhdr NULL in %s\n", __func__);
return NULL;
}
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);
data =get_recvframe_data(prframe);
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 */
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"));
;
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;
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 */
/* _rtw_spinlock(&pdefrag_q->lock); */
phead = get_list_head(pdefrag_q);
rtw_list_insert_tail(&pfhdr->list, phead);
/* _rtw_spinunlock(&pdefrag_q->lock); */
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)
{
/* _rtw_spinlock(&pdefrag_q->lock); */
phead = get_list_head(pdefrag_q);
rtw_list_insert_tail(&pfhdr->list, phead);
/* _rtw_spinunlock(&pdefrag_q->lock); */
/* 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;
}
}
;
return prtnframe;
}
#define ENDIAN_FREE 1
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 */
#ifdef ENDIAN_FREE
/* nSubframe_Length = ntohs(*((u16*)(pdata + 12))); */
nSubframe_Length = RTW_GET_BE16(pdata + 12);
#else /* ENDIAN_FREE */
nSubframe_Length = *((u16*)(pdata + 12));
/* m ==>change the length order */
nSubframe_Length = (nSubframe_Length>>8) + (nSubframe_Length<<8);
/* ntohs(nSubframe_Length); */
#endif /* ENDIAN_FREE */
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 = rtw_skb_alloc(nSubframe_Length + 12);
if (sub_skb) {
skb_reserve(sub_skb, 12);
data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
memcpy(data_ptr, pdata, nSubframe_Length);
} else {
sub_skb = rtw_skb_clone(prframe->u.hdr.pkt);
if (sub_skb)
{
sub_skb->data = pdata;
sub_skb->len = nSubframe_Length;
skb_set_tail_pointer(sub_skb, nSubframe_Length);
}
else
{
DBG_88E("rtw_skb_clone() Fail!!! , nr_subframes = %d\n", nr_subframes);
break;
}
}
/* sub_skb->dev = padapter->pnetdev; */
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 */
#ifdef ENDIAN_FREE
/* eth_type = ntohs(*(u16*)&sub_skb->data[6]); */
eth_type = RTW_GET_BE16(&sub_skb->data[6]);
#else /* ENDIAN_FREE */
eth_type = (sub_skb->data[6] << 8) | sub_skb->data[7];
#endif /* ENDIAN_FREE */
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);
memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
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);
memcpy(skb_push(sub_skb, 2), &len, 2);
memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
}
/* Indicat the packets to upper layer */
{
/* memset(sub_skb->cb, 0, sizeof(sub_skb->cb)); */
#ifdef CONFIG_BR_EXT
/* Insert NAT2.5 RX here! */
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
void *br_port = NULL;
#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35))
br_port = padapter->pnetdev->br_port;
#else /* (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35)) */
rcu_read_lock();
br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
rcu_read_unlock();
#endif /* (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35)) */
if ( br_port && (check_fwstate(pmlmepriv, WIFI_STATION_STATE|WIFI_ADHOC_STATE) == true) )
{
if (nat25_handle_frame(padapter, sub_skb) == -1) {
/* priv->ext_stats.rx_data_drops++; */
/* DEBUG_ERR("RX DROP: nat25_handle_frame fail!\n"); */
/* return FAIL; */
/* bypass this frame to upper layer!! */
}
}
#endif /* CONFIG_BR_EXT */
sub_skb->protocol = eth_type_trans(sub_skb, padapter->pnetdev);
sub_skb->dev = padapter->pnetdev;
sub_skb->ip_summed = CHECKSUM_NONE;
rtw_netif_rx(padapter->pnetdev, 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;
#ifdef DBG_RX_SEQ
DBG_88E("DBG_RX_SEQ %s:%d init IndicateSeq: %d, NewSeq: %d\n", __FUNCTION__, __LINE__,
preorder_ctrl->indicate_seq, seq_num);
#endif
/* DbgPrint("check_indicate_seq, 1st->indicate_seq =%d\n", precvpriv->indicate_seq); */
}
/* DbgPrint("enter->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
/* Drop out the packet which SeqNum is smaller than WinStart */
if ( SN_LESS(seq_num, preorder_ctrl->indicate_seq) )
{
/* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
/* DbgPrint("CheckRxTsIndicateSeq(): Packet Drop! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
#ifdef DBG_RX_DROP_FRAME
DBG_88E("%s IndicateSeq: %d > NewSeq: %d\n", __FUNCTION__,
preorder_ctrl->indicate_seq, seq_num);
#endif
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;
#ifdef DBG_RX_SEQ
DBG_88E("DBG_RX_SEQ %s:%d SN_EQUAL IndicateSeq: %d, NewSeq: %d\n", __FUNCTION__, __LINE__,
preorder_ctrl->indicate_seq, seq_num);
#endif
}
else if (SN_LESS(wend, seq_num))
{
/* RT_TRACE(COMP_RX_REORDER, DBG_LOUD, ("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, NewSeqNum)); */
/* DbgPrint("CheckRxTsIndicateSeq(): Window Shift! IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
/* boundary situation, when seq_num cross 0xFFF */
if (seq_num >= (wsize - 1))
preorder_ctrl->indicate_seq = seq_num + 1 -wsize;
else
preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
#ifdef DBG_RX_SEQ
DBG_88E("DBG_RX_SEQ %s:%d SN_LESS(wend, seq_num) IndicateSeq: %d, NewSeq: %d\n", __FUNCTION__, __LINE__,
preorder_ctrl->indicate_seq, seq_num);
#endif
}
/* DbgPrint("exit->check_indicate_seq(): IndicateSeq: %d, NewSeq: %d\n", precvpriv->indicate_seq, seq_num); */
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;
}
int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced);
int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
{
/* unsigned long irql; */
/* u8 bcancelled; */
struct list_head *phead, *plist;
union recv_frame *prframe;
struct rx_pkt_attrib *pattrib;
/* u8 index = 0; */
int bPktInBuf = false;
struct recv_priv *precvpriv = &padapter->recvpriv;
struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
/* DbgPrint("+recv_indicatepkts_in_order\n"); */
/* _enter_critical_ex(&ppending_recvframe_queue->lock); */
/* _rtw_spinlock_ex(&ppending_recvframe_queue->lock); */
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))
{
/* _exit_critical_ex(&ppending_recvframe_queue->lock); */
/* _rtw_spinunlock_ex(&ppending_recvframe_queue->lock); */
return true;
}
prframe = LIST_CONTAINOR(plist, union recv_frame, u);
pattrib = &prframe->u.hdr.attrib;
preorder_ctrl->indicate_seq = pattrib->seq_num;
#ifdef DBG_RX_SEQ
DBG_88E("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __FUNCTION__, __LINE__,
preorder_ctrl->indicate_seq, pattrib->seq_num);
#endif
}
/* 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;
#ifdef DBG_RX_SEQ
DBG_88E("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __FUNCTION__, __LINE__,
preorder_ctrl->indicate_seq, pattrib->seq_num);
#endif
}
/* Set this as a lock to make sure that only one thread is indicating packet. */
/* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */
/* Indicate packets */
/* RT_ASSERT((index<=REORDER_WIN_SIZE), ("RxReorderIndicatePacket(): Rx Reorder buffer full!!\n")); */
/* indicate this recv_frame */
/* DbgPrint("recv_indicatepkts_in_order, indicate_seq =%d, seq_num =%d\n", precvpriv->indicate_seq, pattrib->seq_num); */
if (!pattrib->amsdu)
{
/* DBG_88E("recv_indicatepkts_in_order, amsdu!=1, indicate_seq =%d, seq_num =%d\n", preorder_ctrl->indicate_seq, pattrib->seq_num); */
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 true; */
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) {
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;
}
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s pattrib->qos !=1\n", __FUNCTION__);
#endif
return _FAIL;
}
if (preorder_ctrl->enable == false) {
/* indicate this recv_frame */
preorder_ctrl->indicate_seq = pattrib->seq_num;
#ifdef DBG_RX_SEQ
DBG_88E("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __FUNCTION__, __LINE__,
preorder_ctrl->indicate_seq, pattrib->seq_num);
#endif
rtw_recv_indicatepkt(padapter, prframe);
preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
#ifdef DBG_RX_SEQ
DBG_88E("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __FUNCTION__, __LINE__,
preorder_ctrl->indicate_seq, pattrib->seq_num);
#endif
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;
#ifdef DBG_RX_SEQ
DBG_88E("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __FUNCTION__, __LINE__,
preorder_ctrl->indicate_seq, pattrib->seq_num);
#endif
retval = amsdu_to_msdu(padapter, prframe);
preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
#ifdef DBG_RX_SEQ
DBG_88E("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __FUNCTION__, __LINE__,
preorder_ctrl->indicate_seq, pattrib->seq_num);
#endif
if (retval != _SUCCESS) {
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s amsdu_to_msdu fail\n", __FUNCTION__);
#endif
}
return retval;
}
}
spin_lock_bh(&ppending_recvframe_queue->lock);
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)) {
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s check_indicate_seq fail\n", __FUNCTION__);
#endif
goto _err_exit;
}
/* s3. Insert all packet into Reorder Queue to maintain its ordering. */
if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) {
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s enqueue_reorder_recvframe fail\n", __FUNCTION__);
#endif
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. */
/* */
if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false)) {
_set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
spin_unlock_bh(&ppending_recvframe_queue->lock);
} else {
spin_unlock_bh(&ppending_recvframe_queue->lock);
_cancel_timer_ex(&preorder_ctrl->reordering_ctrl_timer);
}
return _SUCCESS;
_err_exit:
spin_unlock_bh(&ppending_recvframe_queue->lock);
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;
spin_lock_bh(&ppending_recvframe_queue->lock);
if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) ==true)
_set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
spin_unlock_bh(&ppending_recvframe_queue->lock);
}
static int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe)
{
int retval = _SUCCESS;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
struct ht_priv *phtpriv = &pmlmepriv->htpriv;
if (phtpriv->ht_option ==true) /* B/G/N Mode */
{
if (recv_indicatepkt_reorder(padapter, prframe)!=_SUCCESS)/* including perform A-MPDU Rx Ordering Buffer Control */
{
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s recv_indicatepkt_reorder error!\n", __FUNCTION__);
#endif
if ((padapter->bDriverStopped == false) &&
(padapter->bSurpriseRemoved == false))
{
retval = _FAIL;
return retval;
}
}
}
else /* B/G mode */
{
retval =wlanhdr_to_ethhdr (prframe);
if (retval != _SUCCESS)
{
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("wlanhdr_to_ethhdr: drop pkt\n"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s wlanhdr_to_ethhdr error!\n", __FUNCTION__);
#endif
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;
/* 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"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s decryptor: drop pkt\n", __FUNCTION__);
#endif
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"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s recvframe_chk_defrag: drop pkt\n", __FUNCTION__);
#endif
goto _recv_data_drop;
}
prframe =portctrl(padapter, prframe);
if (prframe == NULL) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s portctrl: drop pkt\n", __FUNCTION__);
#endif
ret = _FAIL;
goto _recv_data_drop;
}
count_rx_stats(padapter, prframe, NULL);
ret = process_recv_indicatepkts(padapter, prframe);
if (ret != _SUCCESS)
{
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recv_func: process_recv_indicatepkts fail!\n"));
#ifdef DBG_RX_DROP_FRAME
DBG_88E("DBG_RX_DROP_FRAME %s process_recv_indicatepkts fail!\n", __FUNCTION__);
#endif
rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
goto _recv_data_drop;
}
_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;
int cnt = 0;
while ((pending_frame =rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
cnt++;
recv_func_posthandle(padapter, pending_frame);
}
if (cnt)
DBG_88E(FUNC_ADPT_FMT" dequeue %d from uc_swdec_pending_queue\n",
FUNC_ADPT_ARG(padapter), cnt);
}
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) &&
psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK &&
!psecuritypriv->busetkipkey)
{
rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
/* DBG_88E("%s: no key, enqueue uc_swdec_pending_queue\n", __func__); */
if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) {
/* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt */
rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
if (rframe)
goto do_posthandle;
}
goto exit;
}
do_posthandle:
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;
;
/* 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++;
;
return ret;
_recv_entry_drop:
;
return ret;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
void rtw_signal_stat_timer_hdl(RTW_TIMER_HDL_ARGS)
#else
void rtw_signal_stat_timer_hdl(struct timer_list *t)
#endif
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
struct adapter *adapter = (struct adapter *)FunctionContext;
#else
struct adapter *adapter = from_timer(adapter, t, recvpriv.signal_stat_timer);
#endif
struct recv_priv *recvpriv = &adapter->recvpriv;
u32 tmp_s, tmp_q;
u8 avg_signal_strength = 0;
u8 avg_signal_qual = 0;
u32 num_signal_strength = 0;
u32 num_signal_qual = 0;
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;
num_signal_strength = recvpriv->signal_strength_data.total_num;
/* 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;
num_signal_qual = recvpriv->signal_qual_data.total_num;
/* after avg_vals are accquired, we can re-stat the signal values */
recvpriv->signal_qual_data.update_req = 1;
}
if (num_signal_strength == 0) {
if (rtw_get_on_cur_ch_time(adapter) == 0
|| rtw_get_passing_time_ms(rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval
#ifdef CONFIG_BT_COEXIST
|| ((BTDM_IsBtDisabled(adapter) == false) && (BT_IsBtInquiryPage(adapter) == true))
#endif
) {
goto set_timer;
}
}
if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true
|| check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false
) {
goto set_timer;
}
/* update value of signal_strength, rssi, signal_qual */
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) && 1
DBG_88E(FUNC_ADPT_FMT" signal_strength:%3u, rssi:%3d, signal_qual:%3u"
", num_signal_strength:%u, num_signal_qual:%u"
", on_cur_ch_ms:%d"
"\n"
, FUNC_ADPT_ARG(adapter)
, recvpriv->signal_strength
, recvpriv->rssi
, recvpriv->signal_qual
, num_signal_strength, num_signal_qual
, rtw_get_on_cur_ch_time(adapter) ? rtw_get_passing_time_ms(rtw_get_on_cur_ch_time(adapter)) : 0
);
#endif
}
set_timer:
rtw_set_signal_stat_timer(recvpriv);
}
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