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linux / linux / kernel / git / bpf / bpf / 242a6df688dcad7c55105280a79aaff83addf7ce / . / drivers / staging / rtl8723bs / core / rtw_recv.c
blob: 7fa8c84cf5f4fcfb3386d212d9c1d7152e55ca81 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/******************************************************************************
*
* Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
*
******************************************************************************/
#define _RTW_RECV_C_
#include <drv_types.h>
#include <rtw_debug.h>
#include <linux/jiffies.h>
#include <rtw_recv.h>
static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
u8 rtw_rfc1042_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
u8 rtw_bridge_tunnel_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
static void rtw_signal_stat_timer_hdl(struct timer_list *t);
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);
/* for (i = 0; i<MAX_RX_NUMBLKS; i++) */
/* _rtw_init_queue(&psta_recvpriv->blk_strms[i]); */
_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;
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;
precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ);
if (!precvpriv->pallocated_frame_buf) {
res = _FAIL;
goto exit;
}
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++) {
INIT_LIST_HEAD(&(precvframe->u.list));
list_add_tail(&(precvframe->u.list), &(precvpriv->free_recv_queue.queue));
rtw_os_recv_resource_alloc(padapter, precvframe);
precvframe->u.hdr.len = 0;
precvframe->u.hdr.adapter = padapter;
precvframe++;
}
res = rtw_hal_init_recv_priv(padapter);
timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl,
0);
precvpriv->signal_stat_sampling_interval = 2000; /* 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)
vfree(precvpriv->pallocated_frame_buf);
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 (list_empty(&pfree_recv_queue->queue))
precvframe = NULL;
else {
phead = get_list_head(pfree_recv_queue);
plist = get_next(phead);
precvframe = (union recv_frame *)plist;
list_del_init(&precvframe->u.hdr.list);
padapter = precvframe->u.hdr.adapter;
if (padapter) {
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)
{
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;
}
int rtw_free_recvframe(union recv_frame *precvframe, struct __queue *pfree_recv_queue)
{
struct adapter *padapter = precvframe->u.hdr.adapter;
struct recv_priv *precvpriv = &padapter->recvpriv;
rtw_os_free_recvframe(precvframe);
spin_lock_bh(&pfree_recv_queue->lock);
list_del_init(&(precvframe->u.hdr.list));
precvframe->u.hdr.len = 0;
list_add_tail(&(precvframe->u.hdr.list), get_list_head(pfree_recv_queue));
if (padapter) {
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;
/* INIT_LIST_HEAD(&(precvframe->u.hdr.list)); */
list_del_init(&(precvframe->u.hdr.list));
list_add_tail(&(precvframe->u.hdr.list), get_list_head(queue));
if (padapter)
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;
/* _spinlock(&pfree_recv_queue->lock); */
spin_lock_bh(&queue->lock);
ret = _rtw_enqueue_recvframe(precvframe, queue);
/* spin_unlock(&pfree_recv_queue->lock); */
spin_unlock_bh(&queue->lock);
return ret;
}
/*
sint rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
{
return rtw_free_recvframe(precvframe, queue);
}
*/
/*
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;
spin_lock(&pframequeue->lock);
phead = get_list_head(pframequeue);
plist = get_next(phead);
while (phead != plist) {
precvframe = (union recv_frame *)plist;
plist = get_next(plist);
rtw_free_recvframe(precvframe, pfree_recv_queue);
}
spin_unlock(&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_871X(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)
{
spin_lock_bh(&queue->lock);
list_del_init(&precvbuf->list);
list_add(&precvbuf->list, get_list_head(queue));
spin_unlock_bh(&queue->lock);
return _SUCCESS;
}
sint rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue)
{
spin_lock_bh(&queue->lock);
list_del_init(&precvbuf->list);
list_add_tail(&precvbuf->list, get_list_head(queue));
spin_unlock_bh(&queue->lock);
return _SUCCESS;
}
struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue)
{
struct recv_buf *precvbuf;
struct list_head *plist, *phead;
spin_lock_bh(&queue->lock);
if (list_empty(&queue->queue))
precvbuf = NULL;
else {
phead = get_list_head(queue);
plist = get_next(phead);
precvbuf = LIST_CONTAINOR(plist, struct recv_buf, list);
list_del_init(&precvbuf->list);
}
spin_unlock_bh(&queue->lock);
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) {
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_871X("\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_871X("\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_871X(" 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_871X(" 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 */
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;
DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt);
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_871X("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_871X("[%s] %d:prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n",
__func__,
__LINE__,
prxattrib->bdecrypted,
prxattrib->encrypt,
psecuritypriv->hw_decrypted);
#endif
switch (prxattrib->encrypt) {
case _WEP40_:
case _WEP104_:
DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_wep);
rtw_wep_decrypt(padapter, (u8 *)precv_frame);
break;
case _TKIP_:
DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_tkip);
res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
break;
case _AES_:
DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_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_)
) {
DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_hw);
psecuritypriv->hw_decrypted = true;
#ifdef DBG_RX_DECRYPTOR
DBG_871X("[%s] %d:prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n",
__func__,
__LINE__,
prxattrib->bdecrypted,
prxattrib->encrypt,
psecuritypriv->hw_decrypted);
#endif
} else {
DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_unknown);
#ifdef DBG_RX_DECRYPTOR
DBG_871X("[%s] %d:prxstat->bdecrypted:%d, prxattrib->encrypt:%d, Setting psecuritypriv->hw_decrypted = %d\n",
__func__,
__LINE__,
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 */
union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame);
union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame)
{
u8 *psta_addr = NULL;
u8 *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;
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) && (psta->ieee8021x_blocked)) {
__be16 be_tmp;
/* 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)
{
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_871X("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_871X("to wakeup, sta_dz_bitmap =%x\n", pstapriv->sta_dz_bitmap); */
}
}
}
}
void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame);
void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame)
{
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);
}
}
}
void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta);
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;
}
traffic_check_for_leave_lps(padapter, false, 0);
}
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);
/* DBG_871X("[%s] %d, seqnum:%d\n", __func__, __LINE__, pattrib->seq_num); */
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 (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA ==myself\n"));
ret = _FAIL;
goto exit;
}
if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
ret = _FAIL;
goto exit;
}
if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
!memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
(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 (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 (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) {
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 (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA ==myself\n"));
#ifdef DBG_RX_DROP_FRAME
DBG_871X("DBG_RX_DROP_FRAME %s SA ="MAC_FMT", myhwaddr ="MAC_FMT"\n",
__func__, MAC_ARG(pattrib->src), MAC_ARG(myhwaddr));
#endif
ret = _FAIL;
goto exit;
}
/* da should be for me */
if ((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_871X("DBG_RX_DROP_FRAME %s DA ="MAC_FMT"\n", __func__, MAC_ARG(pattrib->dst));
#endif
ret = _FAIL;
goto exit;
}
/* check BSSID */
if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
!memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
(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_871X("DBG_RX_DROP_FRAME %s BSSID ="MAC_FMT", mybssid ="MAC_FMT"\n",
__func__, MAC_ARG(pattrib->bssid), MAC_ARG(mybssid));
DBG_871X("this adapter = %d, buddy adapter = %d\n", adapter->adapter_type, adapter->pbuddystruct adapter->adapter_type);
#endif
if (!bmcast) {
DBG_871X("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) {
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_871X("DBG_RX_DROP_FRAME %s can't get psta under STATION_MODE ; drop pkt\n", __func__);
#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) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under MP_MODE ; drop pkt\n"));
#ifdef DBG_RX_DROP_FRAME
DBG_871X("DBG_RX_DROP_FRAME %s can't get psta under WIFI_MP_STATE ; drop pkt\n", __func__);
#endif
ret = _FAIL;
goto exit;
}
} else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
/* Special case */
ret = RTW_RX_HANDLED;
goto exit;
} else {
if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
*psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
if (!*psta) {
/* for AP multicast issue , modify by yiwei */
static unsigned long send_issue_deauth_time;
/* DBG_871X("After send deauth , %u ms has elapsed.\n", jiffies_to_msecs(jiffies - send_issue_deauth_time)); */
if (jiffies_to_msecs(jiffies - send_issue_deauth_time) > 10000 || send_issue_deauth_time == 0) {
send_issue_deauth_time = jiffies;
DBG_871X("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_871X("DBG_RX_DROP_FRAME %s fw_state:0x%x\n", __func__, 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 (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
ret = _FAIL;
goto exit;
}
*psta = rtw_get_stainfo(pstapriv, pattrib->src);
if (!*psta) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under AP_MODE; drop pkt\n"));
DBG_871X("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 (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
ret = RTW_RX_HANDLED;
goto exit;
}
DBG_871X("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)
{
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
struct sta_priv *pstapriv = &padapter->stapriv;
u8 *pframe = precv_frame->u.hdr.rx_data;
struct sta_info *psta = NULL;
/* uint len = precv_frame->u.hdr.len; */
/* DBG_871X("+validate_recv_ctrl_frame\n"); */
if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
return _FAIL;
/* receive the frames that ra(a1) is my address */
if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
return _FAIL;
psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
if (!psta)
return _FAIL;
/* for rx pkt statistics */
psta->sta_stats.rx_ctrl_pkts++;
/* only handle ps-poll */
if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
u16 aid;
u8 wmmps_ac = 0;
aid = GetAid(pframe);
if (psta->aid != aid)
return _FAIL;
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_871X("%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))) {
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 (xmitframe_phead != xmitframe_plist) {
pxmitframe = LIST_CONTAINOR(xmitframe_plist, struct xmit_frame, list);
xmitframe_plist = get_next(xmitframe_plist);
list_del_init(&pxmitframe->list);
psta->sleepq_len--;
if (psta->sleepq_len > 0)
pxmitframe->attrib.mdata = 1;
else
pxmitframe->attrib.mdata = 0;
pxmitframe->attrib.triggered = 1;
/* DBG_871X("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);
/* DBG_871X("after handling ps-poll, tim =%x\n", pstapriv->tim_bitmap); */
/* upate BCN for TIM IE */
/* update_BCNTIM(padapter); */
update_beacon(padapter, _TIM_IE_, NULL, true);
}
/* 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_871X("no buffered packets to xmit\n"); */
if (pstapriv->tim_bitmap&BIT(psta->aid)) {
if (psta->sleepq_len == 0) {
DBG_871X("no buffered packets to xmit\n");
/* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
issue_nulldata_in_interrupt(padapter, psta->hwaddr);
} else {
DBG_871X("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, true);
}
}
}
}
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 = &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) {
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 (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN))
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 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) {
#ifdef DBG_RX_DROP_FRAME
DBG_871X("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_871X("DBG_RX_DROP_FRAME %s case:%d, res:%d\n", __func__, pattrib->to_fr_ds, ret);
#endif
goto exit;
} else if (ret == RTW_RX_HANDLED) {
goto exit;
}
if (!psta) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta == NULL\n"));
#ifdef DBG_RX_DROP_FRAME
DBG_871X("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_871X("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;
}
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 subtype;
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 *mgmt_DATA;
u32 data_len = 0;
pattrib->bdecrypted = 0;
pattrib->encrypt = _AES_;
pattrib->hdrlen = sizeof(struct 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) {
DBG_871X("%s mgmt allocate fail !!!!!!!!!\n", __func__);
goto validate_80211w_fail;
}
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;
kfree(mgmt_DATA);
if (!precv_frame) {
DBG_871X("%s mgmt descrypt fail !!!!!!!!!\n", __func__);
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_871X("802.11w BIP verify fail\n"); */
goto validate_80211w_fail;
} else if (BIP_ret == RTW_RX_HANDLED) {
/* DBG_871X("802.11w recv none protected packet\n"); */
/* issue sa query request */
issue_action_SA_Query(adapter, NULL, 0, 0);
goto validate_80211w_fail;
}
} else { /* 802.11w protect */
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_871X("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_871X("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;
}
static inline void dump_rx_packet(u8 *ptr)
{
int i;
DBG_871X("#############################\n");
for (i = 0; i < 64; i = i+8)
DBG_871X("%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_871X("#############################\n");
}
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;
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;
/* add version chk */
if (ver != 0) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! (ver!= 0)\n"));
retval = _FAIL;
DBG_COUNTER(adapter->rx_logs.core_rx_pre_ver_err);
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 */
dump_rx_packet(ptr);
else if ((bDumpRxPkt == 2) && (type == WIFI_MGT_TYPE))
dump_rx_packet(ptr);
else if ((bDumpRxPkt == 3) && (type == WIFI_DATA_TYPE))
dump_rx_packet(ptr);
switch (type) {
case WIFI_MGT_TYPE: /* mgnt */
DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt);
if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) {
retval = _FAIL;
DBG_COUNTER(padapter->rx_logs.core_rx_pre_mgmt_err_80211w);
break;
}
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"));
DBG_COUNTER(adapter->rx_logs.core_rx_pre_mgmt_err);
}
retval = _FAIL; /* only data frame return _SUCCESS */
break;
case WIFI_CTRL_TYPE: /* ctrl */
DBG_COUNTER(adapter->rx_logs.core_rx_pre_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"));
DBG_COUNTER(adapter->rx_logs.core_rx_pre_ctrl_err);
}
retval = _FAIL; /* only data frame return _SUCCESS */
break;
case WIFI_DATA_TYPE: /* data */
DBG_COUNTER(adapter->rx_logs.core_rx_pre_data);
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++;
DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_err);
} else if (retval == _SUCCESS) {
#ifdef DBG_RX_DUMP_EAP
u8 bDumpRxPkt;
u16 eth_type;
/* dump eapol */
rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
/* get ether_type */
memcpy(&eth_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_SIZE, 2);
eth_type = ntohs((unsigned short) eth_type);
if ((bDumpRxPkt == 4) && (eth_type == 0x888e))
dump_rx_packet(ptr);
#endif
} else
DBG_COUNTER(adapter->rx_logs.core_rx_pre_data_handled);
break;
default:
DBG_COUNTER(adapter->rx_logs.core_rx_pre_unknown);
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type = 0x%x\n", type));
#ifdef DBG_RX_DROP_FRAME
DBG_871X("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 */
sint wlanhdr_to_ethhdr(union recv_frame *precvframe);
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;
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 ((!memcmp(psnap, rtw_rfc1042_header, SNAP_SIZE) &&
(memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) &&
(memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) ||
/* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */
!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;
#ifdef CONFIG_AUTO_AP_MODE
if (0x8899 == pattrib->eth_type) {
struct sta_info *psta = precvframe->u.hdr.psta;
DBG_871X("wlan rx: got eth_type = 0x%x\n", pattrib->eth_type);
if (psta && psta->isrc && psta->pid > 0) {
u16 rx_pid;
rx_pid = *(u16 *)(ptr+rmv_len+2);
DBG_871X("wlan rx(pid = 0x%x): sta("MAC_FMT") pid = 0x%x\n",
rx_pid, MAC_ARG(psta->hwaddr), psta->pid);
if (rx_pid == psta->pid) {
int i;
u16 len = *(u16 *)(ptr+rmv_len+4);
/* u16 ctrl_type = *(u16*)(ptr+rmv_len+6); */
/* DBG_871X("RC: len = 0x%x, ctrl_type = 0x%x\n", len, ctrl_type); */
DBG_871X("RC: len = 0x%x\n", len);
for (i = 0; i < len ; i++)
DBG_871X("0x%x\n", *(ptr+rmv_len+6+i));
/* DBG_871X("0x%x\n", *(ptr+rmv_len+8+i)); */
DBG_871X("RC-end\n");
}
}
}
#endif /* CONFIG_AUTO_AP_MODE */
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 _SUCCESS;
}
/* perform defrag */
static 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;
curfragnum = 0;
pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
phead = get_list_head(defrag_q);
plist = get_next(phead);
prframe = (union recv_frame *)plist;
pfhdr = &prframe->u.hdr;
list_del_init(&(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 (phead != plist) {
pnextrframe = (union recv_frame *)plist;
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) {
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) {
if (fragnum == 0)
/* the first fragment */
if (!list_empty(&pdefrag_q->queue))
/* free current defrag_q */
rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
/* Then enqueue the 0~(n-1) fragment into the defrag_q */
/* spin_lock(&pdefrag_q->lock); */
phead = get_list_head(pdefrag_q);
list_add_tail(&pfhdr->list, phead);
/* spin_unlock(&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) {
/* spin_lock(&pdefrag_q->lock); */
phead = get_list_head(pdefrag_q);
list_add_tail(&pfhdr->list, phead);
/* spin_unlock(&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) && (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;
}
static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe)
{
int a_len, padding_len;
u16 nSubframe_Length;
u8 nr_subframes, i;
u8 *pdata;
_pkt *sub_pkt, *subframes[MAX_SUBFRAME_COUNT];
struct recv_priv *precvpriv = &padapter->recvpriv;
struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
nr_subframes = 0;
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_871X("nRemain_Length is %d and nSubframe_Length is : %d\n", a_len, nSubframe_Length);
break;
}
sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata);
if (!sub_pkt) {
DBG_871X("%s(): allocate sub packet fail !!!\n", __func__);
break;
}
/* move the data point to data content */
pdata += ETH_HLEN;
a_len -= ETH_HLEN;
subframes[nr_subframes++] = sub_pkt;
if (nr_subframes >= MAX_SUBFRAME_COUNT) {
DBG_871X("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) {
DBG_871X("ParseSubframe(): a_len < padding_len !\n");
break;
}
pdata += padding_len;
a_len -= padding_len;
}
}
for (i = 0; i < nr_subframes; i++) {
sub_pkt = subframes[i];
/* Indicat the packets to upper layer */
if (sub_pkt) {
rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib);
}
}
prframe->u.hdr.len = 0;
rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
return _SUCCESS;
}
int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num);
int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
{
struct adapter *padapter = preorder_ctrl->padapter;
struct dvobj_priv *psdpriv = padapter->dvobj;
struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
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_871X("DBG_RX_SEQ %s:%d init IndicateSeq: %d, NewSeq: %d\n", __func__, __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_871X("%s IndicateSeq: %d > NewSeq: %d\n", __func__,
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_871X("DBG_RX_SEQ %s:%d SN_EQUAL IndicateSeq: %d, NewSeq: %d\n", __func__, __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;
pdbgpriv->dbg_rx_ampdu_window_shift_cnt++;
#ifdef DBG_RX_SEQ
DBG_871X("DBG_RX_SEQ %s:%d SN_LESS(wend, seq_num) IndicateSeq: %d, NewSeq: %d\n", __func__, __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;
/* DbgPrint("+enqueue_reorder_recvframe()\n"); */
/* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
/* spin_lock(&ppending_recvframe_queue->lock); */
phead = get_list_head(ppending_recvframe_queue);
plist = get_next(phead);
while (phead != plist) {
pnextrframe = (union recv_frame *)plist;
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))
/* Duplicate entry is found!! Do not insert current entry. */
/* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Duplicate packet is dropped!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
/* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
return false;
else
break;
/* DbgPrint("enqueue_reorder_recvframe():while\n"); */
}
/* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
/* spin_lock(&ppending_recvframe_queue->lock); */
list_del_init(&(prframe->u.hdr.list));
list_add_tail(&(prframe->u.hdr.list), plist);
/* spin_unlock(&ppending_recvframe_queue->lock); */
/* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
/* RT_TRACE(COMP_RX_REORDER, DBG_TRACE, ("InsertRxReorderList(): Pkt insert into buffer!! IndicateSeq: %d, NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum)); */
return true;
}
void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq);
void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq)
{
if (current_seq < prev_seq)
pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq);
else
pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq);
}
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)
{
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;
struct dvobj_priv *psdpriv = padapter->dvobj;
struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_in_oder);
/* DbgPrint("+recv_indicatepkts_in_order\n"); */
/* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
/* spin_lock(&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) {
pdbgpriv->dbg_rx_ampdu_forced_indicate_count++;
if (list_empty(phead)) {
/* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
/* spin_unlock(&ppending_recvframe_queue->lock); */
return true;
}
prframe = (union recv_frame *)plist;
pattrib = &prframe->u.hdr.attrib;
#ifdef DBG_RX_SEQ
DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
preorder_ctrl->indicate_seq, pattrib->seq_num);
#endif
recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num);
preorder_ctrl->indicate_seq = pattrib->seq_num;
}
/* Prepare indication list and indication. */
/* Check if there is any packet need indicate. */
while (!list_empty(phead)) {
prframe = (union recv_frame *)plist;
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);
list_del_init(&(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_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __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_871X("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;
}
/* DbgPrint("recv_indicatepkts_in_order():while\n"); */
}
/* spin_unlock(&ppending_recvframe_queue->lock); */
/* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
return bPktInBuf;
}
int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe);
int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe)
{
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;
struct dvobj_priv *psdpriv = padapter->dvobj;
struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_reoder);
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_871X("DBG_RX_DROP_FRAME %s pattrib->qos != 1\n", __func__);
#endif
return _FAIL;
}
if (preorder_ctrl->enable == false) {
/* indicate this recv_frame */
preorder_ctrl->indicate_seq = pattrib->seq_num;
#ifdef DBG_RX_SEQ
DBG_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __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_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __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_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __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_871X("DBG_RX_SEQ %s:%d IndicateSeq: %d, NewSeq: %d\n", __func__, __LINE__,
preorder_ctrl->indicate_seq, pattrib->seq_num);
#endif
if (retval != _SUCCESS) {
#ifdef DBG_RX_DROP_FRAME
DBG_871X("DBG_RX_DROP_FRAME %s amsdu_to_msdu fail\n", __func__);
#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)) {
pdbgpriv->dbg_rx_ampdu_drop_count++;
#ifdef DBG_RX_DROP_FRAME
DBG_871X("DBG_RX_DROP_FRAME %s check_indicate_seq fail\n", __func__);
#endif
goto _err_exit;
}
/* s3. Insert all packet into Reorder Queue to maintain its ordering. */
if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) {
/* DbgPrint("recv_indicatepkt_reorder, enqueue_reorder_recvframe fail!\n"); */
/* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
/* return _FAIL; */
#ifdef DBG_RX_DROP_FRAME
DBG_871X("DBG_RX_DROP_FRAME %s enqueue_reorder_recvframe fail\n", __func__);
#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. */
/* */
/* 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);
spin_unlock_bh(&ppending_recvframe_queue->lock);
} else {
spin_unlock_bh(&ppending_recvframe_queue->lock);
del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
}
return _SUCCESS;
_err_exit:
spin_unlock_bh(&ppending_recvframe_queue->lock);
return _FAIL;
}
void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
{
struct recv_reorder_ctrl *preorder_ctrl =
from_timer(preorder_ctrl, t, reordering_ctrl_timer);
struct adapter *padapter = preorder_ctrl->padapter;
struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
return;
/* DBG_871X("+rtw_reordering_ctrl_timeout_handler() =>\n"); */
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);
}
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;
struct ht_priv *phtpriv = &pmlmepriv->htpriv;
DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate);
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 */
#ifdef DBG_RX_DROP_FRAME
DBG_871X("DBG_RX_DROP_FRAME %s recv_indicatepkt_reorder error!\n", __func__);
#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_871X("DBG_RX_DROP_FRAME %s wlanhdr_to_ethhdr error!\n", __func__);
#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 __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
DBG_COUNTER(padapter->rx_logs.core_rx_pre);
/* 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 recv_priv *precvpriv = &padapter->recvpriv;
struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
DBG_COUNTER(padapter->rx_logs.core_rx_post);
prframe = decryptor(padapter, prframe);
if (!prframe) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
#ifdef DBG_RX_DROP_FRAME
DBG_871X("DBG_RX_DROP_FRAME %s decryptor: drop pkt\n", __func__);
#endif
ret = _FAIL;
DBG_COUNTER(padapter->rx_logs.core_rx_post_decrypt_err);
goto _recv_data_drop;
}
prframe = recvframe_chk_defrag(padapter, prframe);
if (!prframe) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
#ifdef DBG_RX_DROP_FRAME
DBG_871X("DBG_RX_DROP_FRAME %s recvframe_chk_defrag: drop pkt\n", __func__);
#endif
DBG_COUNTER(padapter->rx_logs.core_rx_post_defrag_err);
goto _recv_data_drop;
}
prframe = portctrl(padapter, prframe);
if (!prframe) {
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
#ifdef DBG_RX_DROP_FRAME
DBG_871X("DBG_RX_DROP_FRAME %s portctrl: drop pkt\n", __func__);
#endif
ret = _FAIL;
DBG_COUNTER(padapter->rx_logs.core_rx_post_portctrl_err);
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_871X("DBG_RX_DROP_FRAME %s process_recv_indicatepkts fail!\n", __func__);
#endif
rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
DBG_COUNTER(padapter->rx_logs.core_rx_post_indicate_err);
goto _recv_data_drop;
}
_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++;
DBG_COUNTER(padapter->rx_logs.core_rx_dequeue);
recv_func_posthandle(padapter, pending_frame);
}
if (cnt)
DBG_871X(FUNC_ADPT_FMT" dequeue %d from uc_swdec_pending_queue\n",
FUNC_ADPT_ARG(padapter), cnt);
}
DBG_COUNTER(padapter->rx_logs.core_rx);
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) {
DBG_COUNTER(padapter->rx_logs.core_rx_enqueue);
rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
/* DBG_871X("%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;
ret = recv_func(padapter, precvframe);
if (ret == _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:
/* RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("_recv_entry_drop\n")); */
return ret;
}
static void rtw_signal_stat_timer_hdl(struct timer_list *t)
{
struct adapter *adapter =
from_timer(adapter, t, recvpriv.signal_stat_timer);
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 = 5; /* 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
|| jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval
) {
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_871X(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) ? jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) : 0
);
#endif
}
set_timer:
rtw_set_signal_stat_timer(recvpriv);
}