/****************************************************************************** * recv_linux.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 _RECV_OSDEP_C_ #include <linux/usb.h> #include "osdep_service.h" #include "drv_types.h" #include "wifi.h" #include "recv_osdep.h" #include "osdep_intf.h" #include "ethernet.h" #include <linux/if_arp.h> #include "usb_ops.h" /*init os related resource in struct recv_priv*/ /*alloc os related resource in union recv_frame*/ int r8712_os_recv_resource_alloc(struct _adapter *padapter, union recv_frame *precvframe) { precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL; return _SUCCESS; } /*alloc os related resource in struct recv_buf*/ int r8712_os_recvbuf_resource_alloc(struct _adapter *padapter, struct recv_buf *precvbuf) { int res = _SUCCESS; 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 = NULL; precvbuf->pbuf = NULL; precvbuf->pdata = NULL; precvbuf->phead = NULL; precvbuf->ptail = NULL; precvbuf->pend = NULL; precvbuf->transfer_len = 0; precvbuf->len = 0; return res; } /*free os related resource in struct recv_buf*/ int r8712_os_recvbuf_resource_free(struct _adapter *padapter, struct recv_buf *precvbuf) { if (precvbuf->pskb) dev_kfree_skb_any(precvbuf->pskb); if (precvbuf->purb) { usb_kill_urb(precvbuf->purb); usb_free_urb(precvbuf->purb); } return _SUCCESS; } void r8712_handle_tkip_mic_err(struct _adapter *padapter, u8 bgroup) { union iwreq_data wrqu; struct iw_michaelmicfailure ev; struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 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; memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN); memset(&wrqu, 0x00, sizeof(wrqu)); wrqu.data.length = sizeof(ev); wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev); } void r8712_recv_indicatepkt(struct _adapter *padapter, union recv_frame *precv_frame) { struct recv_priv *precvpriv; struct __queue *pfree_recv_queue; _pkt *skb; struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; precvpriv = &(padapter->recvpriv); pfree_recv_queue = &(precvpriv->free_recv_queue); skb = precv_frame->u.hdr.pkt; if (skb == NULL) goto _recv_indicatepkt_drop; skb->data = precv_frame->u.hdr.rx_data; #ifdef NET_SKBUFF_DATA_USES_OFFSET skb->tail = (sk_buff_data_t)(precv_frame->u.hdr.rx_tail - precv_frame->u.hdr.rx_head); #else skb->tail = (sk_buff_data_t)precv_frame->u.hdr.rx_tail; #endif skb->len = precv_frame->u.hdr.len; if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1)) skb->ip_summed = CHECKSUM_UNNECESSARY; else skb->ip_summed = CHECKSUM_NONE; skb->dev = padapter->pnetdev; skb->protocol = eth_type_trans(skb, padapter->pnetdev); netif_rx(skb); precv_frame->u.hdr.pkt = NULL; /* pointers to NULL before * r8712_free_recvframe() */ r8712_free_recvframe(precv_frame, pfree_recv_queue); return; _recv_indicatepkt_drop: /*enqueue back to free_recv_queue*/ if (precv_frame) r8712_free_recvframe(precv_frame, pfree_recv_queue); precvpriv->rx_drop++; } void r8712_os_read_port(struct _adapter *padapter, struct recv_buf *precvbuf) { struct recv_priv *precvpriv = &padapter->recvpriv; 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) r8712_read_port(padapter, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf); } static void _r8712_reordering_ctrl_timeout_handler (void *FunctionContext) { struct recv_reorder_ctrl *preorder_ctrl = (struct recv_reorder_ctrl *)FunctionContext; r8712_reordering_ctrl_timeout_handler(preorder_ctrl); } void r8712_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl) { struct _adapter *padapter = preorder_ctrl->padapter; _init_timer(&(preorder_ctrl->reordering_ctrl_timer), padapter->pnetdev, _r8712_reordering_ctrl_timeout_handler, preorder_ctrl); }