gnab-rtl8812au/os_dep/linux/recv_linux.c
2013-11-19 21:24:49 +01:00

681 lines
18 KiB
C

/******************************************************************************
*
* 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_types.h>
int rtw_os_alloc_recvframe(_adapter *padapter, union recv_frame *precvframe, u8 *pdata, _pkt *pskb)
{
int res = _SUCCESS;
u8 shift_sz = 0;
u32 skb_len, alloc_sz;
_pkt *pkt_copy = NULL;
struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
if(pdata == NULL)
{
precvframe->u.hdr.pkt = NULL;
res = _FAIL;
return res;
}
// Modified by Albert 20101213
// For 8 bytes IP header alignment.
shift_sz = pattrib->qos ? 6:0;// Qos data, wireless lan header length is 26
skb_len = pattrib->pkt_len;
// for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet.
// modify alloc_sz for recvive crc error packet by thomas 2011-06-02
if((pattrib->mfrag == 1)&&(pattrib->frag_num == 0))
{
//alloc_sz = 1664; //1664 is 128 alignment.
alloc_sz = (skb_len <= 1650) ? 1664:(skb_len + 14);
}
else
{
alloc_sz = skb_len;
// 6 is for IP header 8 bytes alignment in QoS packet case.
// 8 is for skb->data 4 bytes alignment.
alloc_sz += 14;
}
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)) // http://www.mail-archive.com/netdev@vger.kernel.org/msg17214.html
pkt_copy = dev_alloc_skb(alloc_sz);
#else
pkt_copy = netdev_alloc_skb(padapter->pnetdev, alloc_sz);
#endif
if(pkt_copy)
{
pkt_copy->dev = padapter->pnetdev;
precvframe->u.hdr.pkt = pkt_copy;
precvframe->u.hdr.rx_head = pkt_copy->data;
precvframe->u.hdr.rx_end = pkt_copy->data + alloc_sz;
skb_reserve(pkt_copy, 8 - ((SIZE_PTR)( pkt_copy->data) & 7 ));//force pkt_copy->data at 8-byte alignment address
skb_reserve(pkt_copy, shift_sz);//force ip_hdr at 8-byte alignment address according to shift_sz.
_rtw_memcpy(pkt_copy->data, pdata, skb_len);
precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pkt_copy->data;
}
else
{
#ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
DBG_871X("%s:can not allocate memory for skb copy\n", __FUNCTION__);
precvframe->u.hdr.pkt = NULL;
//rtw_free_recvframe(precvframe, pfree_recv_queue);
//goto _exit_recvbuf2recvframe;
res = _FAIL;
#else
if((pattrib->mfrag == 1)&&(pattrib->frag_num == 0))
{
DBG_871X("%s: alloc_skb fail , drop frag frame \n", __FUNCTION__);
//rtw_free_recvframe(precvframe, pfree_recv_queue);
res = _FAIL;
goto exit_rtw_os_recv_resource_alloc;
}
if(pskb == NULL)
{
res = _FAIL;
goto exit_rtw_os_recv_resource_alloc;
}
precvframe->u.hdr.pkt = skb_clone(pskb, GFP_ATOMIC);
if(precvframe->u.hdr.pkt)
{
precvframe->u.hdr.rx_head = precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pdata;
precvframe->u.hdr.rx_end = pdata + alloc_sz;
}
else
{
DBG_871X("%s: skb_clone fail\n", __FUNCTION__);
//rtw_free_recvframe(precvframe, pfree_recv_queue);
//goto _exit_recvbuf2recvframe;
res = _FAIL;
}
#endif
}
exit_rtw_os_recv_resource_alloc:
return res;
}
void rtw_os_free_recvframe(union recv_frame *precvframe)
{
if(precvframe->u.hdr.pkt)
{
dev_kfree_skb_any(precvframe->u.hdr.pkt);//free skb by driver
precvframe->u.hdr.pkt = NULL;
}
}
//init os related resource in struct recv_priv
int rtw_os_recv_resource_init(struct recv_priv *precvpriv, _adapter *padapter)
{
int res=_SUCCESS;
return res;
}
//alloc os related resource in union recv_frame
int rtw_os_recv_resource_alloc(_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)
{
}
//alloc os related resource in struct recv_buf
int rtw_os_recvbuf_resource_alloc(_adapter *padapter, struct recv_buf *precvbuf)
{
int res=_SUCCESS;
#ifdef CONFIG_USB_HCI
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
#endif //CONFIG_USB_HCI
return res;
}
//free os related resource in struct recv_buf
int rtw_os_recvbuf_resource_free(_adapter *padapter, struct recv_buf *precvbuf)
{
int ret = _SUCCESS;
#ifdef CONFIG_USB_HCI
#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);
}
#endif //CONFIG_USB_HCI
if(precvbuf->pskb)
dev_kfree_skb_any(precvbuf->pskb);
return ret;
}
_pkt *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, u16 nSubframe_Length, u8 *pdata)
{
u16 eth_type;
u8 *data_ptr;
_pkt *sub_skb;
struct rx_pkt_attrib *pattrib;
pattrib = &prframe->u.hdr.attrib;
#ifdef CONFIG_SKB_COPY
sub_skb = dev_alloc_skb(nSubframe_Length + 12);
if(sub_skb)
{
skb_reserve(sub_skb, 12);
data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
_rtw_memcpy(data_ptr, (pdata + ETH_HLEN), nSubframe_Length);
}
else
#endif // CONFIG_SKB_COPY
{
sub_skb = skb_clone(prframe->u.hdr.pkt, GFP_ATOMIC);
if(sub_skb)
{
sub_skb->data = pdata + ETH_HLEN;
sub_skb->len = nSubframe_Length;
skb_set_tail_pointer(sub_skb, nSubframe_Length);
}
else
{
DBG_871X("%s(): skb_clone() Fail!!!\n",__FUNCTION__);
return NULL;
}
}
eth_type = RTW_GET_BE16(&sub_skb->data[6]);
if (sub_skb->len >= 8 &&
((_rtw_memcmp(sub_skb->data, rtw_rfc1042_header, SNAP_SIZE) &&
eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
_rtw_memcmp(sub_skb->data, rtw_bridge_tunnel_header, SNAP_SIZE) )) {
/* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
skb_pull(sub_skb, SNAP_SIZE);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
} else {
u16 len;
/* Leave Ethernet header part of hdr and full payload */
len = htons(sub_skb->len);
_rtw_memcpy(skb_push(sub_skb, 2), &len, 2);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
_rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
}
return sub_skb;
}
void rtw_os_recv_indicate_pkt(_adapter *padapter, _pkt *pkt, struct rx_pkt_attrib *pattrib)
{
struct mlme_priv*pmlmepriv = &padapter->mlmepriv;
#ifdef CONFIG_BR_EXT
void *br_port = NULL;
#endif
/* Indicat the packets to upper layer */
if (pkt) {
if(check_fwstate(pmlmepriv, WIFI_AP_STATE) == _TRUE)
{
_pkt *pskb2=NULL;
struct sta_info *psta = NULL;
struct sta_priv *pstapriv = &padapter->stapriv;
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 = skb_clone(pkt, GFP_ATOMIC);
} 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;
pkt->dev = pnetdev;
#if (LINUX_VERSION_CODE>=KERNEL_VERSION(2,6,35))
skb_set_queue_mapping(pkt, rtw_recv_select_queue(pkt));
#endif //LINUX_VERSION_CODE>=KERNEL_VERSION(2,6,35)
rtw_xmit_entry(pkt, pnetdev);
if(bmcast && (pskb2 != NULL) ) {
pkt = pskb2;
} else {
return;
}
}
}
else// to APself
{
//DBG_871X("to APSelf\n");
}
}
#ifdef CONFIG_BR_EXT
// Insert NAT2.5 RX here!
#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(_adapter *priv, struct sk_buff *skb);
if (nat25_handle_frame(padapter, pkt) == -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
dev_kfree_skb_any(sub_skb);
continue;
#endif
}
}
#endif // CONFIG_BR_EXT
pkt->protocol = eth_type_trans(pkt, padapter->pnetdev);
pkt->dev = padapter->pnetdev;
#ifdef CONFIG_TCP_CSUM_OFFLOAD_RX
if ( (pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1) ) {
pkt->ip_summed = CHECKSUM_UNNECESSARY;
} else {
pkt->ip_summed = CHECKSUM_NONE;
}
#else /* !CONFIG_TCP_CSUM_OFFLOAD_RX */
pkt->ip_summed = CHECKSUM_NONE;
#endif //CONFIG_TCP_CSUM_OFFLOAD_RX
netif_rx(pkt);
}
}
void rtw_handle_tkip_mic_err(_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(_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 = skb_copy(skb, GFP_ATOMIC);
// 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));
netif_rx(skb);
precv_frame->u.hdr.pkt = NULL; // set pointer to NULL before rtw_free_recvframe() if call netif_rx()
#endif
}
#ifdef CONFIG_AUTO_AP_MODE
static void rtw_os_ksocket_send(_adapter *padapter, union recv_frame *precv_frame)
{
_pkt *skb = precv_frame->u.hdr.pkt;
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
struct sta_info *psta = precv_frame->u.hdr.psta;
DBG_871X("eth rx: got eth_type=0x%x\n", pattrib->eth_type);
if (psta && psta->isrc && psta->pid>0)
{
u16 rx_pid;
rx_pid = *(u16*)(skb->data+ETH_HLEN);
DBG_871X("eth 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*)(skb->data+ETH_HLEN+2);
//u16 ctrl_type = *(u16*)(skb->data+ETH_HLEN+4);
//DBG_871X("eth, RC: len=0x%x, ctrl_type=0x%x\n", len, ctrl_type);
DBG_871X("eth, RC: len=0x%x\n", len);
for(i=0;i<len;i++)
DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+4+i));
//DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+6+i));
DBG_871X("eth, RC-end\n");
#if 0
//send_sz = ksocket_send(padapter->ksock_send, &padapter->kaddr_send, (skb->data+ETH_HLEN+2), len);
rtw_recv_ksocket_send_cmd(padapter, (skb->data+ETH_HLEN+2), len);
//DBG_871X("ksocket_send size=%d\n", send_sz);
#endif
}
}
}
#endif //CONFIG_AUTO_AP_MODE
int rtw_recv_indicatepkt(_adapter *padapter, union recv_frame *precv_frame)
{
struct recv_priv *precvpriv;
_queue *pfree_recv_queue;
_pkt *skb;
struct mlme_priv*pmlmepriv = &padapter->mlmepriv;
struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
_func_enter_;
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));
#ifdef CONFIG_AUTO_AP_MODE
#if 1 //for testing
#if 1
if (0x8899 == pattrib->eth_type)
{
rtw_os_ksocket_send(padapter, precv_frame);
//goto _recv_indicatepkt_drop;
}
#else
if (0x8899 == pattrib->eth_type)
{
rtw_auto_ap_mode_rx(padapter, precv_frame);
goto _recv_indicatepkt_end;
}
#endif
#endif
#endif //CONFIG_AUTO_AP_MODE
rtw_os_recv_indicate_pkt(padapter, skb, pattrib);
_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 netif_rx!!!!\n"));
_func_exit_;
return _SUCCESS;
_recv_indicatepkt_drop:
//enqueue back to free_recv_queue
if(precv_frame)
rtw_free_recvframe(precv_frame, pfree_recv_queue);
return _FAIL;
_func_exit_;
}
void rtw_os_read_port(_adapter *padapter, struct recv_buf *precvbuf)
{
struct recv_priv *precvpriv = &padapter->recvpriv;
#ifdef CONFIG_USB_HCI
precvbuf->ref_cnt--;
//free skb in recv_buf
dev_kfree_skb_any(precvbuf->pskb);
precvbuf->pskb = NULL;
precvbuf->reuse = _FALSE;
if(precvbuf->irp_pending == _FALSE)
{
rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
}
#endif
#if defined(CONFIG_SDIO_HCI) || defined(CONFIG_GSPI_HCI)
precvbuf->pskb = NULL;
#endif
}
void _rtw_reordering_ctrl_timeout_handler (void *FunctionContext);
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)
{
_adapter *padapter = preorder_ctrl->padapter;
_init_timer(&(preorder_ctrl->reordering_ctrl_timer), padapter->pnetdev, _rtw_reordering_ctrl_timeout_handler, preorder_ctrl);
}