diff options
Diffstat (limited to 'drivers/staging/rtl8712/recv_linux.c')
| -rw-r--r-- | drivers/staging/rtl8712/recv_linux.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/drivers/staging/rtl8712/recv_linux.c b/drivers/staging/rtl8712/recv_linux.c new file mode 100644 index 0000000..1f0949e --- /dev/null +++ b/drivers/staging/rtl8712/recv_linux.c @@ -0,0 +1,169 @@ +/****************************************************************************** + * 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 "osdep_service.h" +#include "drv_types.h" +#include "wifi.h" +#include "recv_osdep.h" +#include "osdep_intf.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); +} |
