/******************************************************************************
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* recv_linux.c
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*
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* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
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* Linux device driver for RTL8192SU
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* Modifications for inclusion into the Linux staging tree are
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* Copyright(c) 2010 Larry Finger. All rights reserved.
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*
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* Contact information:
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* WLAN FAE <wlanfae@realtek.com>.
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* Larry Finger <Larry.Finger@lwfinger.net>
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*
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******************************************************************************/
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#define _RECV_OSDEP_C_
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#include <linux/usb.h>
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#include "osdep_service.h"
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#include "drv_types.h"
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#include "wifi.h"
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#include "recv_osdep.h"
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#include "osdep_intf.h"
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#include "ethernet.h"
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#include <linux/if_arp.h>
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#include "usb_ops.h"
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/*init os related resource in struct recv_priv*/
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/*alloc os related resource in union recv_frame*/
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int r8712_os_recv_resource_alloc(struct _adapter *padapter,
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union recv_frame *precvframe)
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{
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precvframe->u.hdr.pkt_newalloc = NULL;
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precvframe->u.hdr.pkt = NULL;
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return _SUCCESS;
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}
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/*alloc os related resource in struct recv_buf*/
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int r8712_os_recvbuf_resource_alloc(struct _adapter *padapter,
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struct recv_buf *precvbuf)
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{
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int res = _SUCCESS;
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precvbuf->irp_pending = false;
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precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
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if (!precvbuf->purb)
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res = _FAIL;
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precvbuf->pskb = NULL;
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precvbuf->pallocated_buf = NULL;
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precvbuf->pbuf = NULL;
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precvbuf->pdata = NULL;
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precvbuf->phead = NULL;
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precvbuf->ptail = NULL;
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precvbuf->pend = NULL;
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precvbuf->transfer_len = 0;
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precvbuf->len = 0;
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return res;
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}
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/*free os related resource in struct recv_buf*/
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int r8712_os_recvbuf_resource_free(struct _adapter *padapter,
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struct recv_buf *precvbuf)
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{
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if (precvbuf->pskb)
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dev_kfree_skb_any(precvbuf->pskb);
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if (precvbuf->purb) {
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usb_kill_urb(precvbuf->purb);
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usb_free_urb(precvbuf->purb);
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}
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return _SUCCESS;
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}
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void r8712_handle_tkip_mic_err(struct _adapter *padapter, u8 bgroup)
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{
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union iwreq_data wrqu;
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struct iw_michaelmicfailure ev;
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struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
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memset(&ev, 0x00, sizeof(ev));
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if (bgroup)
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ev.flags |= IW_MICFAILURE_GROUP;
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else
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ev.flags |= IW_MICFAILURE_PAIRWISE;
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ev.src_addr.sa_family = ARPHRD_ETHER;
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ether_addr_copy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0]);
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memset(&wrqu, 0x00, sizeof(wrqu));
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wrqu.data.length = sizeof(ev);
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wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE, &wrqu,
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(char *)&ev);
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}
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void r8712_recv_indicatepkt(struct _adapter *padapter,
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union recv_frame *precv_frame)
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{
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struct recv_priv *precvpriv;
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struct __queue *pfree_recv_queue;
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_pkt *skb;
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struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
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precvpriv = &padapter->recvpriv;
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pfree_recv_queue = &precvpriv->free_recv_queue;
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skb = precv_frame->u.hdr.pkt;
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if (!skb)
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goto _recv_indicatepkt_drop;
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skb->data = precv_frame->u.hdr.rx_data;
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skb->len = precv_frame->u.hdr.len;
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skb_set_tail_pointer(skb, skb->len);
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if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1))
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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else
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skb->ip_summed = CHECKSUM_NONE;
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skb->dev = padapter->pnetdev;
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skb->protocol = eth_type_trans(skb, padapter->pnetdev);
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netif_rx(skb);
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precv_frame->u.hdr.pkt = NULL; /* pointers to NULL before
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* r8712_free_recvframe()
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*/
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r8712_free_recvframe(precv_frame, pfree_recv_queue);
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return;
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_recv_indicatepkt_drop:
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/*enqueue back to free_recv_queue*/
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if (precv_frame)
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r8712_free_recvframe(precv_frame, pfree_recv_queue);
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precvpriv->rx_drop++;
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}
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static void _r8712_reordering_ctrl_timeout_handler (struct timer_list *t)
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{
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struct recv_reorder_ctrl *preorder_ctrl =
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from_timer(preorder_ctrl, t, reordering_ctrl_timer);
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r8712_reordering_ctrl_timeout_handler(preorder_ctrl);
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}
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void r8712_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
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{
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timer_setup(&preorder_ctrl->reordering_ctrl_timer,
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_r8712_reordering_ctrl_timeout_handler, 0);
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}
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