/******************************************************************************
* rtl871x_recv.c
*
* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
* Linux device driver for RTL8192SU
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* Modifications for inclusion into the Linux staging tree are
* Copyright(c) 2010 Larry Finger. All rights reserved.
*
* Contact information:
* WLAN FAE <wlanfae@realtek.com>
* Larry Finger <Larry.Finger@lwfinger.net>
*
******************************************************************************/
#define _RTL871X_RECV_C_
#include <linux/ip.h>
#include <linux/slab.h>
#include <linux/if_ether.h>
#include <linux/kmemleak.h>
#include <linux/etherdevice.h>
#include "osdep_service.h"
#include "drv_types.h"
#include "recv_osdep.h"
#include "mlme_osdep.h"
#include "ethernet.h"
#include "usb_ops.h"
#include "wifi.h"
static const u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
/* Datagram Delivery Protocol */
static const u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
static const u8 bridge_tunnel_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8};
/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
static const u8 rfc1042_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
void _r8712_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);
_init_queue(&psta_recvpriv->defrag_q);
}
sint _r8712_init_recv_priv(struct recv_priv *precvpriv,
struct _adapter *padapter)
{
sint i;
union recv_frame *precvframe;
memset((unsigned char *)precvpriv, 0, sizeof(struct recv_priv));
spin_lock_init(&precvpriv->lock);
_init_queue(&precvpriv->free_recv_queue);
_init_queue(&precvpriv->recv_pending_queue);
precvpriv->adapter = padapter;
precvpriv->free_recvframe_cnt = NR_RECVFRAME;
precvpriv->pallocated_frame_buf = _malloc(NR_RECVFRAME *
sizeof(union recv_frame) +
RXFRAME_ALIGN_SZ);
if (precvpriv->pallocated_frame_buf == NULL)
return _FAIL;
kmemleak_not_leak(precvpriv->pallocated_frame_buf);
memset(precvpriv->pallocated_frame_buf, 0, NR_RECVFRAME *
sizeof(union recv_frame) + RXFRAME_ALIGN_SZ);
precvpriv->precv_frame_buf = precvpriv->pallocated_frame_buf +
RXFRAME_ALIGN_SZ -
((addr_t)(precvpriv->pallocated_frame_buf) &
(RXFRAME_ALIGN_SZ-1));
precvframe = (union recv_frame *)precvpriv->precv_frame_buf;
for (i = 0; i < NR_RECVFRAME; i++) {
_init_listhead(&(precvframe->u.list));
list_insert_tail(&(precvframe->u.list),
&(precvpriv->free_recv_queue.queue));
r8712_os_recv_resource_alloc(padapter, precvframe);
precvframe->u.hdr.adapter = padapter;
precvframe++;
}
precvpriv->rx_pending_cnt = 1;
return r8712_init_recv_priv(precvpriv, padapter);
}
void _r8712_free_recv_priv(struct recv_priv *precvpriv)
{
kfree(precvpriv->pallocated_frame_buf);
r8712_free_recv_priv(precvpriv);
}
union recv_frame *r8712_alloc_recvframe(struct __queue *pfree_recv_queue)
{
unsigned long irqL;
union recv_frame *precvframe;
struct list_head *plist, *phead;
struct _adapter *padapter;
struct recv_priv *precvpriv;
spin_lock_irqsave(&pfree_recv_queue->lock, irqL);
if (_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);
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--;
}
}
spin_unlock_irqrestore(&pfree_recv_queue->lock, irqL);
return precvframe;
}
/*
caller : defrag; recvframe_chk_defrag in recv_thread (passive)
pframequeue: defrag_queue : will be accessed in recv_thread (passive)
using spin_lock to protect
*/
void r8712_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 (end_of_queue_search(phead, plist) == false) {
precvframe = LIST_CONTAINOR(plist, union recv_frame, u);
plist = get_next(plist);
r8712_free_recvframe(precvframe, pfree_recv_queue);
}
spin_unlock(&pframequeue->lock);
}
sint r8712_recvframe_chkmic(struct _adapter *adapter,
union recv_frame *precvframe)
{
sint i, res = _SUCCESS;
u32 datalen;
u8 miccode[8];
u8 bmic_err = false;
u8 *pframe, *payload, *pframemic;
u8 *mickey, idx, *iv;
struct sta_info *stainfo;
struct rx_pkt_attrib *prxattrib = &precvframe->u.hdr.attrib;
struct security_priv *psecuritypriv = &adapter->securitypriv;
stainfo = r8712_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
if (prxattrib->encrypt == _TKIP_) {
/* calculate mic code */
if (stainfo != NULL) {
if (IS_MCAST(prxattrib->ra)) {
iv = precvframe->u.hdr.rx_data +
prxattrib->hdrlen;
idx = iv[3];
mickey = &psecuritypriv->XGrprxmickey[(((idx >>
6) & 0x3)) - 1].skey[0];
if (psecuritypriv->binstallGrpkey == false)
return _FAIL;
} else
mickey = &stainfo->tkiprxmickey.skey[0];
/*icv_len included the mic code*/
datalen = precvframe->u.hdr.len - prxattrib->hdrlen -
prxattrib->iv_len - prxattrib->icv_len - 8;
pframe = precvframe->u.hdr.rx_data;
payload = pframe + prxattrib->hdrlen +
prxattrib->iv_len;
seccalctkipmic(mickey, pframe, payload, datalen,
&miccode[0],
(unsigned char)prxattrib->priority);
pframemic = payload + datalen;
bmic_err = false;
for (i = 0; i < 8; i++) {
if (miccode[i] != *(pframemic + i))
bmic_err = true;
}
if (bmic_err == true) {
if (prxattrib->bdecrypted == true)
r8712_handle_tkip_mic_err(adapter,
(u8)IS_MCAST(prxattrib->ra));
res = _FAIL;
} else {
/* mic checked ok */
if ((psecuritypriv->bcheck_grpkey ==
false) && (IS_MCAST(prxattrib->ra) ==
true))
psecuritypriv->bcheck_grpkey = true;
}
recvframe_pull_tail(precvframe, 8);
}
}
return res;
}
/* decrypt and set the ivlen,icvlen of the recv_frame */
union recv_frame *r8712_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;
if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) ||
(psecuritypriv->sw_decrypt == true))) {
psecuritypriv->hw_decrypted = false;
switch (prxattrib->encrypt) {
case _WEP40_:
case _WEP104_:
r8712_wep_decrypt(padapter, (u8 *)precv_frame);
break;
case _TKIP_:
r8712_tkip_decrypt(padapter, (u8 *)precv_frame);
break;
case _AES_:
r8712_aes_decrypt(padapter, (u8 *)precv_frame);
break;
default:
break;
}
} else if (prxattrib->bdecrypted == 1)
psecuritypriv->hw_decrypted = true;
return return_packet;
}
/*###set the security information in the recv_frame */
union recv_frame *r8712_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;
pstapriv = &adapter->stapriv;
ptr = get_recvframe_data(precv_frame);
pfhdr = &precv_frame->u.hdr;
psta_addr = pfhdr->attrib.ta;
psta = r8712_get_stainfo(pstapriv, psta_addr);
auth_alg = adapter->securitypriv.AuthAlgrthm;
if (auth_alg == 2) {
if ((psta != NULL) && (psta->ieee8021x_blocked)) {
/* blocked
* only accept EAPOL frame */
prtnframe = precv_frame;
/*get ether_type */
ptr = ptr + pfhdr->attrib.hdrlen +
pfhdr->attrib.iv_len + LLC_HEADER_SIZE;
memcpy(ðer_type, ptr, 2);
ether_type = ntohs((unsigned short)ether_type);
if (ether_type == 0x888e)
prtnframe = precv_frame;
else {
/*free this frame*/
r8712_free_recvframe(precv_frame,
&adapter->recvpriv.free_recv_queue);
prtnframe = NULL;
}
} else {
/* allowed
* check decryption status, and decrypt the
* frame if needed */
prtnframe = precv_frame;
/* check is the EAPOL frame or not (Rekey) */
if (ether_type == 0x888e) {
/* check Rekey */
prtnframe = precv_frame;
}
}
} else
prtnframe = precv_frame;
return prtnframe;
}
static 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)
return _FAIL;
if (seq_ctrl == prxcache->tid_rxseq[tid])
return _FAIL;
prxcache->tid_rxseq[tid] = seq_ctrl;
return _SUCCESS;
}
static 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 (!memcmp(myhwaddr, pattrib->src, ETH_ALEN))
return _FAIL;
if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast))
return _FAIL;
if (is_zero_ether_addr(pattrib->bssid) ||
is_zero_ether_addr(mybssid) ||
(memcmp(pattrib->bssid, mybssid, ETH_ALEN)))
return _FAIL;
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))
return _FAIL;
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))
return _FAIL;
} 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))
return _FAIL;
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 = r8712_get_bcmc_stainfo(adapter);
else
*psta = r8712_get_stainfo(pstapriv, sta_addr); /* get ap_info */
if (*psta == NULL) {
if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
adapter->mppriv.rx_pktloss++;
return _FAIL;
}
return ret;
}
static 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;
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)) {
/* if NULL-frame, drop packet */
if ((GetFrameSubType(ptr)) == WIFI_DATA_NULL)
return _FAIL;
/* drop QoS-SubType Data, including QoS NULL,
* excluding QoS-Data */
if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) ==
WIFI_QOS_DATA_TYPE) {
if (GetFrameSubType(ptr) & (BIT(4) | BIT(5) | BIT(6)))
return _FAIL;
}
/* filter packets that SA is myself or multicast or broadcast */
if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN))
return _FAIL;
/* da should be for me */
if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast))
return _FAIL;
/* check BSSID */
if (is_zero_ether_addr(pattrib->bssid) ||
is_zero_ether_addr(mybssid) ||
(memcmp(pattrib->bssid, mybssid, ETH_ALEN)))
return _FAIL;
if (bmcast)
*psta = r8712_get_bcmc_stainfo(adapter);
else
*psta = r8712_get_stainfo(pstapriv, pattrib->bssid);
if (*psta == NULL)
return _FAIL;
} 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 = r8712_get_stainfo(pstapriv, pattrib->bssid);
if (*psta == NULL)
return _FAIL;
} else
return _FAIL;
return _SUCCESS;
}
static sint sta2ap_data_frame(struct _adapter *adapter,
union recv_frame *precv_frame,
struct sta_info **psta)
{
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);
if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
/* For AP mode, if DA is non-MCAST, then it must be BSSID,
* and bssid == BSSID
* For AP mode, RA=BSSID, TX=STA(SRC_ADDR), A3=DST_ADDR */
if (memcmp(pattrib->bssid, mybssid, ETH_ALEN))
return _FAIL;
*psta = r8712_get_stainfo(pstapriv, pattrib->src);
if (*psta == NULL)
return _FAIL;
}
return _SUCCESS;
}
static sint validate_recv_ctrl_frame(struct _adapter *adapter,
union recv_frame *precv_frame)
{
return _FAIL;
}
static sint validate_recv_mgnt_frame(struct _adapter *adapter,
union recv_frame *precv_frame)
{
return _FAIL;
}
static sint validate_recv_data_frame(struct _adapter *adapter,
union recv_frame *precv_frame)
{
int res;
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;
bretry = GetRetry(ptr);
pda = get_da(ptr);
psa = get_sa(ptr);
pbssid = get_hdr_bssid(ptr);
if (pbssid == NULL)
return _FAIL;
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);
res = sta2sta_data_frame(adapter, precv_frame, &psta);
break;
case 1:
memcpy(pattrib->ra, pda, ETH_ALEN);
memcpy(pattrib->ta, pbssid, ETH_ALEN);
res = ap2sta_data_frame(adapter, precv_frame, &psta);
break;
case 2:
memcpy(pattrib->ra, pbssid, ETH_ALEN);
memcpy(pattrib->ta, psa, ETH_ALEN);
res = sta2ap_data_frame(adapter, precv_frame, &psta);
break;
case 3:
memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
return _FAIL;
default:
return _FAIL;
}
if (res == _FAIL)
return _FAIL;
if (psta == NULL)
return _FAIL;
else
precv_frame->u.hdr.psta = psta;
pattrib->amsdu = 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;
} 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)
return _FAIL;
if (pattrib->privacy) {
GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt,
IS_MCAST(pattrib->ra));
SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len,
pattrib->encrypt);
} else {
pattrib->encrypt = 0;
pattrib->iv_len = pattrib->icv_len = 0;
}
return _SUCCESS;
}
sint r8712_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 *ptr = precv_frame->u.hdr.rx_data;
u8 ver = (unsigned char)(*ptr) & 0x3;
/*add version chk*/
if (ver != 0)
return _FAIL;
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);
switch (type) {
case WIFI_MGT_TYPE: /*mgnt*/
retval = validate_recv_mgnt_frame(adapter, precv_frame);
break;
case WIFI_CTRL_TYPE:/*ctrl*/
retval = validate_recv_ctrl_frame(adapter, precv_frame);
break;
case WIFI_DATA_TYPE: /*data*/
pattrib->qos = (subtype & BIT(7)) ? 1 : 0;
retval = validate_recv_data_frame(adapter, precv_frame);
break;
default:
return _FAIL;
}
return retval;
}
sint r8712_wlanhdr_to_ethhdr(union recv_frame *precvframe)
{
/*remove the wlanhdr and add the eth_hdr*/
sint rmv_len;
u16 eth_type, len;
u8 bsnaphdr;
u8 *psnap_type;
struct ieee80211_snap_hdr *psnap;
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 */
if ((!memcmp(psnap, (void *)rfc1042_header, SNAP_SIZE) &&
(memcmp(psnap_type, (void *)SNAP_ETH_TYPE_IPX, 2)) &&
(memcmp(psnap_type, (void *)SNAP_ETH_TYPE_APPLETALK_AARP, 2))) ||
!memcmp(psnap, (void *)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;
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) {
len = htons(len);
memcpy(ptr + 12, &len, 2);
}
return ret;
}
s32 r8712_recv_entry(union recv_frame *precvframe)
{
struct _adapter *padapter;
struct recv_priv *precvpriv;
struct mlme_priv *pmlmepriv;
struct recv_stat *prxstat;
struct dvobj_priv *pdev;
u8 *phead, *pdata, *ptail, *pend;
struct __queue *pfree_recv_queue, *ppending_recv_queue;
s32 ret = _SUCCESS;
struct intf_hdl *pintfhdl;
padapter = precvframe->u.hdr.adapter;
pintfhdl = &padapter->pio_queue->intf;
pmlmepriv = &padapter->mlmepriv;
precvpriv = &(padapter->recvpriv);
pdev = &padapter->dvobjpriv;
pfree_recv_queue = &(precvpriv->free_recv_queue);
ppending_recv_queue = &(precvpriv->recv_pending_queue);
phead = precvframe->u.hdr.rx_head;
pdata = precvframe->u.hdr.rx_data;
ptail = precvframe->u.hdr.rx_tail;
pend = precvframe->u.hdr.rx_end;
prxstat = (struct recv_stat *)phead;
padapter->ledpriv.LedControlHandler(padapter, LED_CTL_RX);
ret = recv_func(padapter, precvframe);
if (ret == _FAIL)
goto _recv_entry_drop;
precvpriv->rx_pkts++;
precvpriv->rx_bytes += (uint)(precvframe->u.hdr.rx_tail -
precvframe->u.hdr.rx_data);
return ret;
_recv_entry_drop:
precvpriv->rx_drop++;
padapter->mppriv.rx_pktloss = precvpriv->rx_drop;
return ret;
}