1 /******************************************************************************
3 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
19 ******************************************************************************/
20 #define _RECV_OSDEP_C_
22 #include <drv_types.h>
24 int rtw_os_alloc_recvframe(_adapter *padapter, union recv_frame *precvframe, u8 *pdata, _pkt *pskb)
28 u32 skb_len, alloc_sz;
29 _pkt *pkt_copy = NULL;
30 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
35 precvframe->u.hdr.pkt = NULL;
41 // Modified by Albert 20101213
42 // For 8 bytes IP header alignment.
43 shift_sz = pattrib->qos ? 6:0;// Qos data, wireless lan header length is 26
45 skb_len = pattrib->pkt_len;
47 // for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet.
48 // modify alloc_sz for recvive crc error packet by thomas 2011-06-02
49 if((pattrib->mfrag == 1)&&(pattrib->frag_num == 0))
51 //alloc_sz = 1664; //1664 is 128 alignment.
52 alloc_sz = (skb_len <= 1650) ? 1664:(skb_len + 14);
57 // 6 is for IP header 8 bytes alignment in QoS packet case.
58 // 8 is for skb->data 4 bytes alignment.
62 pkt_copy = rtw_skb_alloc(alloc_sz);
66 pkt_copy->dev = padapter->pnetdev;
67 precvframe->u.hdr.pkt = pkt_copy;
68 precvframe->u.hdr.rx_head = pkt_copy->data;
69 precvframe->u.hdr.rx_end = pkt_copy->data + alloc_sz;
70 skb_reserve(pkt_copy, 8 - ((SIZE_PTR)( pkt_copy->data) & 7 ));//force pkt_copy->data at 8-byte alignment address
71 skb_reserve(pkt_copy, shift_sz);//force ip_hdr at 8-byte alignment address according to shift_sz.
72 _rtw_memcpy(pkt_copy->data, pdata, skb_len);
73 precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pkt_copy->data;
77 #ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
78 DBG_871X("%s:can not allocate memory for skb copy\n", __FUNCTION__);
80 precvframe->u.hdr.pkt = NULL;
82 //rtw_free_recvframe(precvframe, pfree_recv_queue);
83 //goto _exit_recvbuf2recvframe;
87 if((pattrib->mfrag == 1)&&(pattrib->frag_num == 0))
89 DBG_871X("%s: alloc_skb fail , drop frag frame \n", __FUNCTION__);
90 //rtw_free_recvframe(precvframe, pfree_recv_queue);
92 goto exit_rtw_os_recv_resource_alloc;
98 goto exit_rtw_os_recv_resource_alloc;
101 precvframe->u.hdr.pkt = rtw_skb_clone(pskb);
102 if(precvframe->u.hdr.pkt)
104 precvframe->u.hdr.rx_head = precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pdata;
105 precvframe->u.hdr.rx_end = pdata + alloc_sz;
109 DBG_871X("%s: rtw_skb_clone fail\n", __FUNCTION__);
110 //rtw_free_recvframe(precvframe, pfree_recv_queue);
111 //goto _exit_recvbuf2recvframe;
117 exit_rtw_os_recv_resource_alloc:
123 void rtw_os_free_recvframe(union recv_frame *precvframe)
125 if(precvframe->u.hdr.pkt)
127 rtw_skb_free(precvframe->u.hdr.pkt);//free skb by driver
129 precvframe->u.hdr.pkt = NULL;
133 //init os related resource in struct recv_priv
134 int rtw_os_recv_resource_init(struct recv_priv *precvpriv, _adapter *padapter)
141 //alloc os related resource in union recv_frame
142 int rtw_os_recv_resource_alloc(_adapter *padapter, union recv_frame *precvframe)
146 precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL;
151 //free os related resource in union recv_frame
152 void rtw_os_recv_resource_free(struct recv_priv *precvpriv)
155 union recv_frame *precvframe;
156 precvframe = (union recv_frame*) precvpriv->precv_frame_buf;
158 for(i=0; i < NR_RECVFRAME; i++)
160 if(precvframe->u.hdr.pkt)
162 rtw_skb_free(precvframe->u.hdr.pkt);//free skb by driver
163 precvframe->u.hdr.pkt = NULL;
169 //alloc os related resource in struct recv_buf
170 int rtw_os_recvbuf_resource_alloc(_adapter *padapter, struct recv_buf *precvbuf)
174 #ifdef CONFIG_USB_HCI
175 struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
176 struct usb_device *pusbd = pdvobjpriv->pusbdev;
178 precvbuf->irp_pending = _FALSE;
179 precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
180 if(precvbuf->purb == NULL){
184 precvbuf->pskb = NULL;
186 precvbuf->reuse = _FALSE;
188 precvbuf->pallocated_buf = precvbuf->pbuf = NULL;
190 precvbuf->pdata = precvbuf->phead = precvbuf->ptail = precvbuf->pend = NULL;
192 precvbuf->transfer_len = 0;
196 #ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
197 precvbuf->pallocated_buf = rtw_usb_buffer_alloc(pusbd, (size_t)precvbuf->alloc_sz, &precvbuf->dma_transfer_addr);
198 precvbuf->pbuf = precvbuf->pallocated_buf;
199 if(precvbuf->pallocated_buf == NULL)
201 #endif //CONFIG_USE_USB_BUFFER_ALLOC_RX
203 #endif //CONFIG_USB_HCI
208 //free os related resource in struct recv_buf
209 int rtw_os_recvbuf_resource_free(_adapter *padapter, struct recv_buf *precvbuf)
213 #ifdef CONFIG_USB_HCI
215 #ifdef CONFIG_USE_USB_BUFFER_ALLOC_RX
217 struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
218 struct usb_device *pusbd = pdvobjpriv->pusbdev;
220 rtw_usb_buffer_free(pusbd, (size_t)precvbuf->alloc_sz, precvbuf->pallocated_buf, precvbuf->dma_transfer_addr);
221 precvbuf->pallocated_buf = NULL;
222 precvbuf->dma_transfer_addr = 0;
224 #endif //CONFIG_USE_USB_BUFFER_ALLOC_RX
228 //usb_kill_urb(precvbuf->purb);
229 usb_free_urb(precvbuf->purb);
232 #endif //CONFIG_USB_HCI
237 #ifdef CONFIG_PREALLOC_RX_SKB_BUFFER
238 if(rtw_free_skb_premem(precvbuf->pskb)!=0)
240 rtw_skb_free(precvbuf->pskb);
246 _pkt *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, u16 nSubframe_Length, u8 *pdata)
251 struct rx_pkt_attrib *pattrib;
253 pattrib = &prframe->u.hdr.attrib;
255 #ifdef CONFIG_SKB_COPY
256 sub_skb = rtw_skb_alloc(nSubframe_Length + 12);
259 skb_reserve(sub_skb, 12);
260 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
261 _rtw_memcpy(data_ptr, (pdata + ETH_HLEN), nSubframe_Length);
264 #endif // CONFIG_SKB_COPY
266 sub_skb = rtw_skb_clone(prframe->u.hdr.pkt);
269 sub_skb->data = pdata + ETH_HLEN;
270 sub_skb->len = nSubframe_Length;
271 skb_set_tail_pointer(sub_skb, nSubframe_Length);
275 DBG_871X("%s(): rtw_skb_clone() Fail!!!\n",__FUNCTION__);
280 eth_type = RTW_GET_BE16(&sub_skb->data[6]);
282 if (sub_skb->len >= 8 &&
283 ((_rtw_memcmp(sub_skb->data, rtw_rfc1042_header, SNAP_SIZE) &&
284 eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
285 _rtw_memcmp(sub_skb->data, rtw_bridge_tunnel_header, SNAP_SIZE) )) {
286 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
287 skb_pull(sub_skb, SNAP_SIZE);
288 _rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
289 _rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
292 /* Leave Ethernet header part of hdr and full payload */
293 len = htons(sub_skb->len);
294 _rtw_memcpy(skb_push(sub_skb, 2), &len, 2);
295 _rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
296 _rtw_memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
302 void rtw_os_recv_indicate_pkt(_adapter *padapter, _pkt *pkt, struct rx_pkt_attrib *pattrib)
304 struct mlme_priv*pmlmepriv = &padapter->mlmepriv;
305 struct recv_priv *precvpriv = &(padapter->recvpriv);
307 void *br_port = NULL;
311 /* Indicat the packets to upper layer */
313 if(check_fwstate(pmlmepriv, WIFI_AP_STATE) == _TRUE)
316 struct sta_info *psta = NULL;
317 struct sta_priv *pstapriv = &padapter->stapriv;
318 int bmcast = IS_MCAST(pattrib->dst);
320 //DBG_871X("bmcast=%d\n", bmcast);
322 if(_rtw_memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN)==_FALSE)
324 //DBG_871X("not ap psta=%p, addr=%pM\n", psta, pattrib->dst);
328 psta = rtw_get_bcmc_stainfo(padapter);
329 pskb2 = rtw_skb_clone(pkt);
331 psta = rtw_get_stainfo(pstapriv, pattrib->dst);
336 struct net_device *pnetdev= (struct net_device*)padapter->pnetdev;
338 //DBG_871X("directly forwarding to the rtw_xmit_entry\n");
340 //skb->ip_summed = CHECKSUM_NONE;
342 #if (LINUX_VERSION_CODE>=KERNEL_VERSION(2,6,35))
343 skb_set_queue_mapping(pkt, rtw_recv_select_queue(pkt));
344 #endif //LINUX_VERSION_CODE>=KERNEL_VERSION(2,6,35)
346 _rtw_xmit_entry(pkt, pnetdev);
348 if(bmcast && (pskb2 != NULL) ) {
350 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_mcast);
352 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_forward);
359 //DBG_871X("to APSelf\n");
360 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_self);
365 // Insert NAT2.5 RX here!
366 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35))
367 br_port = padapter->pnetdev->br_port;
368 #else // (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35))
370 br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
372 #endif // (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 35))
375 if( br_port && (check_fwstate(pmlmepriv, WIFI_STATION_STATE|WIFI_ADHOC_STATE) == _TRUE) )
377 int nat25_handle_frame(_adapter *priv, struct sk_buff *skb);
378 if (nat25_handle_frame(padapter, pkt) == -1) {
379 //priv->ext_stats.rx_data_drops++;
380 //DEBUG_ERR("RX DROP: nat25_handle_frame fail!\n");
384 // bypass this frame to upper layer!!
386 rtw_skb_free(sub_skb);
391 #endif // CONFIG_BR_EXT
392 if( precvpriv->sink_udpport > 0)
393 rtw_sink_rtp_seq_dbg(padapter,pkt);
394 pkt->protocol = eth_type_trans(pkt, padapter->pnetdev);
395 pkt->dev = padapter->pnetdev;
397 #ifdef CONFIG_TCP_CSUM_OFFLOAD_RX
398 if ( (pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1) ) {
399 pkt->ip_summed = CHECKSUM_UNNECESSARY;
401 pkt->ip_summed = CHECKSUM_NONE;
403 #else /* !CONFIG_TCP_CSUM_OFFLOAD_RX */
404 pkt->ip_summed = CHECKSUM_NONE;
405 #endif //CONFIG_TCP_CSUM_OFFLOAD_RX
407 ret = rtw_netif_rx(padapter->pnetdev, pkt);
408 if (ret == NET_RX_SUCCESS)
409 DBG_COUNTER(padapter->rx_logs.os_netif_ok);
411 DBG_COUNTER(padapter->rx_logs.os_netif_err);
415 void rtw_handle_tkip_mic_err(_adapter *padapter,u8 bgroup)
417 #ifdef CONFIG_IOCTL_CFG80211
418 enum nl80211_key_type key_type = 0;
420 union iwreq_data wrqu;
421 struct iw_michaelmicfailure ev;
422 struct mlme_priv* pmlmepriv = &padapter->mlmepriv;
423 struct security_priv *psecuritypriv = &padapter->securitypriv;
426 if( psecuritypriv->last_mic_err_time == 0 )
428 psecuritypriv->last_mic_err_time = rtw_get_current_time();
432 cur_time = rtw_get_current_time();
434 if( cur_time - psecuritypriv->last_mic_err_time < 60*HZ )
436 psecuritypriv->btkip_countermeasure = _TRUE;
437 psecuritypriv->last_mic_err_time = 0;
438 psecuritypriv->btkip_countermeasure_time = cur_time;
442 psecuritypriv->last_mic_err_time = rtw_get_current_time();
446 #ifdef CONFIG_IOCTL_CFG80211
449 key_type |= NL80211_KEYTYPE_GROUP;
453 key_type |= NL80211_KEYTYPE_PAIRWISE;
456 cfg80211_michael_mic_failure(padapter->pnetdev, (u8 *)&pmlmepriv->assoc_bssid[ 0 ], key_type, -1,
460 _rtw_memset( &ev, 0x00, sizeof( ev ) );
463 ev.flags |= IW_MICFAILURE_GROUP;
467 ev.flags |= IW_MICFAILURE_PAIRWISE;
470 ev.src_addr.sa_family = ARPHRD_ETHER;
471 _rtw_memcpy( ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[ 0 ], ETH_ALEN );
473 _rtw_memset( &wrqu, 0x00, sizeof( wrqu ) );
474 wrqu.data.length = sizeof( ev );
476 #ifndef CONFIG_IOCTL_CFG80211
477 wireless_send_event( padapter->pnetdev, IWEVMICHAELMICFAILURE, &wrqu, (char*) &ev );
481 void rtw_hostapd_mlme_rx(_adapter *padapter, union recv_frame *precv_frame)
483 #ifdef CONFIG_HOSTAPD_MLME
485 struct hostapd_priv *phostapdpriv = padapter->phostapdpriv;
486 struct net_device *pmgnt_netdev = phostapdpriv->pmgnt_netdev;
488 RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("+rtw_hostapd_mlme_rx\n"));
490 skb = precv_frame->u.hdr.pkt;
495 skb->data = precv_frame->u.hdr.rx_data;
496 skb->tail = precv_frame->u.hdr.rx_tail;
497 skb->len = precv_frame->u.hdr.len;
499 //pskb_copy = rtw_skb_copy(skb);
500 // if(skb == NULL) goto _exit;
502 skb->dev = pmgnt_netdev;
503 skb->ip_summed = CHECKSUM_NONE;
504 skb->pkt_type = PACKET_OTHERHOST;
505 //skb->protocol = __constant_htons(0x0019); /*ETH_P_80211_RAW*/
506 skb->protocol = __constant_htons(0x0003); /*ETH_P_80211_RAW*/
508 //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);
510 //skb->mac.raw = skb->data;
511 skb_reset_mac_header(skb);
514 _rtw_memset(skb->cb, 0, sizeof(skb->cb));
516 rtw_netif_rx(pmgnt_netdev, skb);
518 precv_frame->u.hdr.pkt = NULL; // set pointer to NULL before rtw_free_recvframe() if call rtw_netif_rx()
522 #ifdef CONFIG_AUTO_AP_MODE
523 static void rtw_os_ksocket_send(_adapter *padapter, union recv_frame *precv_frame)
525 _pkt *skb = precv_frame->u.hdr.pkt;
526 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
527 struct sta_info *psta = precv_frame->u.hdr.psta;
529 DBG_871X("eth rx: got eth_type=0x%x\n", pattrib->eth_type);
531 if (psta && psta->isrc && psta->pid>0)
535 rx_pid = *(u16*)(skb->data+ETH_HLEN);
537 DBG_871X("eth rx(pid=0x%x): sta("MAC_FMT") pid=0x%x\n",
538 rx_pid, MAC_ARG(psta->hwaddr), psta->pid);
540 if(rx_pid == psta->pid)
543 u16 len = *(u16*)(skb->data+ETH_HLEN+2);
544 //u16 ctrl_type = *(u16*)(skb->data+ETH_HLEN+4);
546 //DBG_871X("eth, RC: len=0x%x, ctrl_type=0x%x\n", len, ctrl_type);
547 DBG_871X("eth, RC: len=0x%x\n", len);
550 DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+4+i));
551 //DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+6+i));
553 DBG_871X("eth, RC-end\n");
556 //send_sz = ksocket_send(padapter->ksock_send, &padapter->kaddr_send, (skb->data+ETH_HLEN+2), len);
557 rtw_recv_ksocket_send_cmd(padapter, (skb->data+ETH_HLEN+2), len);
559 //DBG_871X("ksocket_send size=%d\n", send_sz);
566 #endif //CONFIG_AUTO_AP_MODE
568 int rtw_recv_indicatepkt(_adapter *padapter, union recv_frame *precv_frame)
570 struct recv_priv *precvpriv;
571 _queue *pfree_recv_queue;
573 struct mlme_priv*pmlmepriv = &padapter->mlmepriv;
574 struct rx_pkt_attrib *pattrib;
576 if(NULL == precv_frame)
577 goto _recv_indicatepkt_drop;
579 DBG_COUNTER(padapter->rx_logs.os_indicate);
580 pattrib = &precv_frame->u.hdr.attrib;
581 precvpriv = &(padapter->recvpriv);
582 pfree_recv_queue = &(precvpriv->free_recv_queue);
584 #ifdef CONFIG_DRVEXT_MODULE
585 if (drvext_rx_handler(padapter, precv_frame->u.hdr.rx_data, precv_frame->u.hdr.len) == _SUCCESS)
587 goto _recv_indicatepkt_drop;
591 #ifdef CONFIG_WAPI_SUPPORT
592 if (rtw_wapi_check_for_drop(padapter,precv_frame))
594 WAPI_TRACE(WAPI_ERR, "%s(): Rx Reorder Drop case!!\n", __FUNCTION__);
595 goto _recv_indicatepkt_drop;
599 skb = precv_frame->u.hdr.pkt;
602 RT_TRACE(_module_recv_osdep_c_,_drv_err_,("rtw_recv_indicatepkt():skb==NULL something wrong!!!!\n"));
603 goto _recv_indicatepkt_drop;
606 RT_TRACE(_module_recv_osdep_c_,_drv_info_,("rtw_recv_indicatepkt():skb != NULL !!!\n"));
607 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));
608 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));
610 skb->data = precv_frame->u.hdr.rx_data;
612 skb_set_tail_pointer(skb, precv_frame->u.hdr.len);
614 skb->len = precv_frame->u.hdr.len;
616 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_pointer(skb), skb_end_pointer(skb), skb->len));
618 #ifdef CONFIG_AUTO_AP_MODE
621 if (0x8899 == pattrib->eth_type)
623 rtw_os_ksocket_send(padapter, precv_frame);
625 //goto _recv_indicatepkt_drop;
628 if (0x8899 == pattrib->eth_type)
630 rtw_auto_ap_mode_rx(padapter, precv_frame);
632 goto _recv_indicatepkt_end;
636 #endif //CONFIG_AUTO_AP_MODE
638 rtw_os_recv_indicate_pkt(padapter, skb, pattrib);
640 _recv_indicatepkt_end:
642 precv_frame->u.hdr.pkt = NULL; // pointers to NULL before rtw_free_recvframe()
644 rtw_free_recvframe(precv_frame, pfree_recv_queue);
646 RT_TRACE(_module_recv_osdep_c_,_drv_info_,("\n rtw_recv_indicatepkt :after rtw_os_recv_indicate_pkt!!!!\n"));
651 _recv_indicatepkt_drop:
653 //enqueue back to free_recv_queue
655 rtw_free_recvframe(precv_frame, pfree_recv_queue);
657 DBG_COUNTER(padapter->rx_logs.os_indicate_err);
663 void rtw_os_read_port(_adapter *padapter, struct recv_buf *precvbuf)
665 struct recv_priv *precvpriv = &padapter->recvpriv;
667 #ifdef CONFIG_USB_HCI
671 //free skb in recv_buf
672 rtw_skb_free(precvbuf->pskb);
674 precvbuf->pskb = NULL;
675 precvbuf->reuse = _FALSE;
677 if(precvbuf->irp_pending == _FALSE)
679 rtw_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
684 #if defined(CONFIG_SDIO_HCI) || defined(CONFIG_GSPI_HCI)
685 precvbuf->pskb = NULL;
689 void _rtw_reordering_ctrl_timeout_handler (void *FunctionContext);
690 void _rtw_reordering_ctrl_timeout_handler (void *FunctionContext)
692 struct recv_reorder_ctrl *preorder_ctrl = (struct recv_reorder_ctrl *)FunctionContext;
693 rtw_reordering_ctrl_timeout_handler(preorder_ctrl);
696 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
698 _adapter *padapter = preorder_ctrl->padapter;
700 _init_timer(&(preorder_ctrl->reordering_ctrl_timer), padapter->pnetdev, _rtw_reordering_ctrl_timeout_handler, preorder_ctrl);