rtl8188eu/os_dep/recv_linux.c

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/******************************************************************************
*
* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
*
******************************************************************************/
#define _RECV_OSDEP_C_
#include <drv_conf.h>
#include <osdep_service.h>
#include <drv_types.h>
#include <wifi.h>
#include <recv_osdep.h>
#include <osdep_intf.h>
#include <ethernet.h>
#include <usb_ops.h>
//init os related resource in struct recv_priv
int rtw_os_recv_resource_init(struct recv_priv *precvpriv, struct adapter *padapter)
{
int res=_SUCCESS;
return res;
}
//alloc os related resource in union recv_frame
int rtw_os_recv_resource_alloc(struct adapter *padapter, union recv_frame *precvframe)
{
int res=_SUCCESS;
precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL;
return res;
}
//free os related resource in union recv_frame
void rtw_os_recv_resource_free(struct recv_priv *precvpriv)
{
sint i;
union recv_frame *precvframe;
precvframe = (union recv_frame*) precvpriv->precv_frame_buf;
for(i=0; i < NR_RECVFRAME; i++)
{
if(precvframe->u.hdr.pkt)
{
rtw_skb_free(precvframe->u.hdr.pkt);//free skb by driver
precvframe->u.hdr.pkt = NULL;
}
precvframe++;
}
}
//alloc os related resource in struct recv_buf
int rtw_os_recvbuf_resource_alloc(struct adapter *padapter, struct recv_buf *precvbuf)
{
int res=_SUCCESS;
struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
struct usb_device *pusbd = pdvobjpriv->pusbdev;
precvbuf->irp_pending = false;
precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
if(precvbuf->purb == NULL){
res = _FAIL;
}
precvbuf->pskb = NULL;
precvbuf->reuse = false;
precvbuf->pallocated_buf = precvbuf->pbuf = NULL;
precvbuf->pdata = precvbuf->phead = precvbuf->ptail = precvbuf->pend = NULL;
precvbuf->transfer_len = 0;
precvbuf->len = 0;
#ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
precvbuf->pallocated_buf = rtw_usb_buffer_alloc(pusbd, (size_t)precvbuf->alloc_sz, &precvbuf->dma_transfer_addr);
precvbuf->pbuf = precvbuf->pallocated_buf;
if(precvbuf->pallocated_buf == NULL)
return _FAIL;
#endif //CONFIG_USE_USB_BUFFER_ALLOC_RX
return res;
}
//free os related resource in struct recv_buf
int rtw_os_recvbuf_resource_free(struct adapter *padapter, struct recv_buf *precvbuf)
{
int ret = _SUCCESS;
#ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
struct usb_device *pusbd = pdvobjpriv->pusbdev;
rtw_usb_buffer_free(pusbd, (size_t)precvbuf->alloc_sz, precvbuf->pallocated_buf, precvbuf->dma_transfer_addr);
precvbuf->pallocated_buf = NULL;
precvbuf->dma_transfer_addr = 0;
#endif //CONFIG_USE_USB_BUFFER_ALLOC_RX
if(precvbuf->purb)
{
//usb_kill_urb(precvbuf->purb);
usb_free_urb(precvbuf->purb);
}
if(precvbuf->pskb)
rtw_skb_free(precvbuf->pskb);
return ret;
}
void rtw_handle_tkip_mic_err(struct adapter *padapter,u8 bgroup)
{
#ifdef CONFIG_IOCTL_CFG80211
enum nl80211_key_type key_type;
#endif
union iwreq_data wrqu;
struct iw_michaelmicfailure ev;
struct mlme_priv* pmlmepriv = &padapter->mlmepriv;
struct security_priv *psecuritypriv = &padapter->securitypriv;
u32 cur_time = 0;
if( psecuritypriv->last_mic_err_time == 0 )
{
psecuritypriv->last_mic_err_time = rtw_get_current_time();
}
else
{
cur_time = rtw_get_current_time();
if( cur_time - psecuritypriv->last_mic_err_time < 60*HZ )
{
psecuritypriv->btkip_countermeasure = true;
psecuritypriv->last_mic_err_time = 0;
psecuritypriv->btkip_countermeasure_time = cur_time;
}
else
{
psecuritypriv->last_mic_err_time = rtw_get_current_time();
}
}
#ifdef CONFIG_IOCTL_CFG80211
if ( bgroup )
{
key_type |= NL80211_KEYTYPE_GROUP;
}
else
{
key_type |= NL80211_KEYTYPE_PAIRWISE;
}
cfg80211_michael_mic_failure(padapter->pnetdev, (u8 *)&pmlmepriv->assoc_bssid[ 0 ], key_type, -1,
NULL, GFP_ATOMIC);
#endif
_rtw_memset( &ev, 0x00, sizeof( ev ) );
if ( bgroup )
{
ev.flags |= IW_MICFAILURE_GROUP;
}
else
{
ev.flags |= IW_MICFAILURE_PAIRWISE;
}
ev.src_addr.sa_family = ARPHRD_ETHER;
_rtw_memcpy( ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[ 0 ], ETH_ALEN );
_rtw_memset( &wrqu, 0x00, sizeof( wrqu ) );
wrqu.data.length = sizeof( ev );
#ifndef CONFIG_IOCTL_CFG80211
wireless_send_event( padapter->pnetdev, IWEVMICHAELMICFAILURE, &wrqu, (char*) &ev );
#endif
}
void rtw_hostapd_mlme_rx(struct adapter *padapter, union recv_frame *precv_frame)
{
#ifdef CONFIG_HOSTAPD_MLME
_pkt *skb;
struct hostapd_priv *phostapdpriv = padapter->phostapdpriv;
struct net_device *pmgnt_netdev = phostapdpriv->pmgnt_netdev;
RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("+rtw_hostapd_mlme_rx\n"));
skb = precv_frame->u.hdr.pkt;
if (skb == NULL)
return;
skb->data = precv_frame->u.hdr.rx_data;
skb->tail = precv_frame->u.hdr.rx_tail;
skb->len = precv_frame->u.hdr.len;
//pskb_copy = rtw_skb_copy(skb);
// if(skb == NULL) goto _exit;
skb->dev = pmgnt_netdev;
skb->ip_summed = CHECKSUM_NONE;
skb->pkt_type = PACKET_OTHERHOST;
//skb->protocol = __constant_htons(0x0019); /*ETH_P_80211_RAW*/
skb->protocol = __constant_htons(0x0003); /*ETH_P_80211_RAW*/
//DBG_871X("(1)data=0x%x, head=0x%x, tail=0x%x, mac_header=0x%x, len=%d\n", skb->data, skb->head, skb->tail, skb->mac_header, skb->len);
//skb->mac.raw = skb->data;
skb_reset_mac_header(skb);
//skb_pull(skb, 24);
_rtw_memset(skb->cb, 0, sizeof(skb->cb));
rtw_netif_rx(pmgnt_netdev, skb);
precv_frame->u.hdr.pkt = NULL; // set pointer to NULL before rtw_free_recvframe() if call rtw_netif_rx()
#endif
}
int rtw_recv_indicatepkt(struct adapter *padapter, union recv_frame *precv_frame)
{
struct recv_priv *precvpriv;
_queue *pfree_recv_queue;
_pkt *skb;
struct mlme_priv*pmlmepriv = &padapter->mlmepriv;
#ifdef CONFIG_TCP_CSUM_OFFLOAD_RX
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
#endif
#ifdef CONFIG_BR_EXT
void *br_port = NULL;
#endif
;
precvpriv = &(padapter->recvpriv);
pfree_recv_queue = &(precvpriv->free_recv_queue);
#ifdef CONFIG_DRVEXT_MODULE
if (drvext_rx_handler(padapter, precv_frame->u.hdr.rx_data, precv_frame->u.hdr.len) == _SUCCESS)
{
goto _recv_indicatepkt_drop;
}
#endif
#ifdef CONFIG_WAPI_SUPPORT
if (rtw_wapi_check_for_drop(padapter,precv_frame))
{
WAPI_TRACE(WAPI_ERR, "%s(): Rx Reorder Drop case!!\n", __FUNCTION__);
goto _recv_indicatepkt_drop;
}
#endif
skb = precv_frame->u.hdr.pkt;
if(skb == NULL)
{
RT_TRACE(_module_recv_osdep_c_,_drv_err_,("rtw_recv_indicatepkt():skb==NULL something wrong!!!!\n"));
goto _recv_indicatepkt_drop;
}
RT_TRACE(_module_recv_osdep_c_,_drv_info_,("rtw_recv_indicatepkt():skb != NULL !!!\n"));
RT_TRACE(_module_recv_osdep_c_,_drv_info_,("rtw_recv_indicatepkt():precv_frame->u.hdr.rx_head=%p precv_frame->hdr.rx_data=%p\n", precv_frame->u.hdr.rx_head, precv_frame->u.hdr.rx_data));
RT_TRACE(_module_recv_osdep_c_,_drv_info_,("precv_frame->hdr.rx_tail=%p precv_frame->u.hdr.rx_end=%p precv_frame->hdr.len=%d \n", precv_frame->u.hdr.rx_tail, precv_frame->u.hdr.rx_end, precv_frame->u.hdr.len));
skb->data = precv_frame->u.hdr.rx_data;
skb_set_tail_pointer(skb, precv_frame->u.hdr.len);
skb->len = precv_frame->u.hdr.len;
RT_TRACE(_module_recv_osdep_c_,_drv_info_,("\n skb->head=%p skb->data=%p skb->tail=%p skb->end=%p skb->len=%d\n", skb->head, skb->data, skb->tail, skb->end, skb->len));
if(check_fwstate(pmlmepriv, WIFI_AP_STATE) == true)
{
_pkt *pskb2=NULL;
struct sta_info *psta = NULL;
struct sta_priv *pstapriv = &padapter->stapriv;
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
int bmcast = IS_MCAST(pattrib->dst);
//DBG_871X("bmcast=%d\n", bmcast);
if(_rtw_memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN)==false)
{
//DBG_871X("not ap psta=%p, addr=%pM\n", psta, pattrib->dst);
if(bmcast)
{
psta = rtw_get_bcmc_stainfo(padapter);
pskb2 = rtw_skb_clone(skb);
} else {
psta = rtw_get_stainfo(pstapriv, pattrib->dst);
}
if(psta)
{
struct net_device *pnetdev= (struct net_device*)padapter->pnetdev;
//DBG_871X("directly forwarding to the rtw_xmit_entry\n");
//skb->ip_summed = CHECKSUM_NONE;
skb->dev = pnetdev;
#if (LINUX_VERSION_CODE>=KERNEL_VERSION(2,6,35))
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0))
skb_set_queue_mapping(skb, rtw_recv_select_queue(skb));
#else
skb_set_queue_mapping(skb, rtw_recv_select_queue(skb,
NULL, NULL));
#endif
#endif //LINUX_VERSION_CODE>=KERNEL_VERSION(2,6,35)
_rtw_xmit_entry(skb, pnetdev);
if(bmcast)
skb = pskb2;
else
goto _recv_indicatepkt_end;
}
}
else// to APself
{
//DBG_871X("to APSelf\n");
}
}
#ifdef CONFIG_BR_EXT
#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35))
br_port = padapter->pnetdev->br_port;
#else // (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35))
rcu_read_lock();
br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
rcu_read_unlock();
#endif // (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35))
if( br_port && (check_fwstate(pmlmepriv, WIFI_STATION_STATE|WIFI_ADHOC_STATE) == true) )
{
int nat25_handle_frame(struct adapter *priv, struct sk_buff *skb);
if (nat25_handle_frame(padapter, skb) == -1) {
//priv->ext_stats.rx_data_drops++;
//DEBUG_ERR("RX DROP: nat25_handle_frame fail!\n");
//return FAIL;
#if 1
// bypass this frame to upper layer!!
#else
goto _recv_indicatepkt_drop;
#endif
}
}
#endif // CONFIG_BR_EXT
#ifdef CONFIG_TCP_CSUM_OFFLOAD_RX
if ( (pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1) ) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
//DBG_871X("CHECKSUM_UNNECESSARY \n");
} else {
skb->ip_summed = CHECKSUM_NONE;
//DBG_871X("CHECKSUM_NONE(%d, %d) \n", pattrib->tcpchk_valid, pattrib->tcp_chkrpt);
}
#else /* !CONFIG_TCP_CSUM_OFFLOAD_RX */
skb->ip_summed = CHECKSUM_NONE;
#endif
skb->dev = padapter->pnetdev;
skb->protocol = eth_type_trans(skb, padapter->pnetdev);
#ifdef DBG_TRX_STA_PKTS
{
struct sta_info *psta = NULL;
struct sta_priv *pstapriv = &padapter->stapriv;
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
int bmcast = IS_MCAST(pattrib->dst);
if(bmcast)
{
psta = rtw_get_bcmc_stainfo(padapter);
} else {
psta = rtw_get_stainfo(pstapriv, pattrib->src);
}
if(psta)
{
switch(pattrib->priority)
{
case 1:
case 2:
psta->rx_bk_cnt++;
break;
case 4:
case 5:
psta->rx_vi_cnt++;
break;
case 6:
case 7:
psta->rx_vo_cnt++;
break;
case 0:
case 3:
default:
psta->rx_be_cnt++;
break;
}
}
}
#endif
rtw_netif_rx(padapter->pnetdev, skb);
_recv_indicatepkt_end:
precv_frame->u.hdr.pkt = NULL; // pointers to NULL before rtw_free_recvframe()
rtw_free_recvframe(precv_frame, pfree_recv_queue);
RT_TRACE(_module_recv_osdep_c_,_drv_info_,("\n rtw_recv_indicatepkt :after rtw_netif_rx!!!!\n"));
;
return _SUCCESS;
_recv_indicatepkt_drop:
//enqueue back to free_recv_queue
if(precv_frame)
rtw_free_recvframe(precv_frame, pfree_recv_queue);
return _FAIL;
;
}
void rtw_os_read_port(struct adapter *padapter, struct recv_buf *precvbuf)
{
struct recv_priv *precvpriv = &padapter->recvpriv;
precvbuf->ref_cnt--;
//free skb in recv_buf
rtw_skb_free(precvbuf->pskb);
precvbuf->pskb = NULL;
precvbuf->reuse = false;
if(precvbuf->irp_pending == false)
{
rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
}
}
void _rtw_reordering_ctrl_timeout_handler (void *FunctionContext)
{
struct recv_reorder_ctrl *preorder_ctrl = (struct recv_reorder_ctrl *)FunctionContext;
rtw_reordering_ctrl_timeout_handler(preorder_ctrl);
}
void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
{
struct adapter *padapter = preorder_ctrl->padapter;
_init_timer(&(preorder_ctrl->reordering_ctrl_timer), padapter->pnetdev, _rtw_reordering_ctrl_timeout_handler, preorder_ctrl);
}