[mirror_ubuntu-artful-kernel.git] / drivers / staging / rtl8712 / recv_linux.c

/******************************************************************************
 * 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;
	skb->len = precv_frame->u.hdr.len;
	skb_set_tail_pointer(skb, skb->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)
		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);
}
Commit	Line	Data
2865d42c LF	1	/******************************************************************************
	2	* recv_linux.c
	3	*
	4	* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
	5	* Linux device driver for RTL8192SU
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of version 2 of the GNU General Public License as
	9	* published by the Free Software Foundation.
	10	*
	11	* This program is distributed in the hope that it will be useful, but WITHOUT
	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	14	* more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along with
	17	* this program; if not, write to the Free Software Foundation, Inc.,
	18	* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
	19	*
	20	* Modifications for inclusion into the Linux staging tree are
	21	* Copyright(c) 2010 Larry Finger. All rights reserved.
	22	*
	23	* Contact information:
	24	* WLAN FAE <wlanfae@realtek.com>.
	25	* Larry Finger <Larry.Finger@lwfinger.net>
	26	*
	27	******************************************************************************/
	28
	29	#define _RECV_OSDEP_C_
	30
359140aa AB	31	#include <linux/usb.h>
359140aa AB	32
2865d42c LF	33	#include "osdep_service.h"
	34	#include "drv_types.h"
	35	#include "wifi.h"
	36	#include "recv_osdep.h"
	37	#include "osdep_intf.h"
359140aa AB	38	#include "ethernet.h"
359140aa AB	39	#include <linux/if_arp.h>
2865d42c LF	40	#include "usb_ops.h"
	41
	42	/init os related resource in struct recv_priv/
	43	/alloc os related resource in union recv_frame/
	44	int r8712_os_recv_resource_alloc(struct _adapter *padapter,
	45	union recv_frame *precvframe)
	46	{
	47	precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL;
	48	return _SUCCESS;
	49	}
	50
	51	/alloc os related resource in struct recv_buf/
	52	int r8712_os_recvbuf_resource_alloc(struct _adapter *padapter,
	53	struct recv_buf *precvbuf)
	54	{
	55	int res = _SUCCESS;
	56
	57	precvbuf->irp_pending = false;
68e9b249	58	precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
2865d42c LF	59	if (precvbuf->purb == NULL)
	60	res = _FAIL;
	61	precvbuf->pskb = NULL;
	62	precvbuf->reuse = false;
	63	precvbuf->pallocated_buf = NULL;
	64	precvbuf->pbuf = NULL;
	65	precvbuf->pdata = NULL;
	66	precvbuf->phead = NULL;
	67	precvbuf->ptail = NULL;
	68	precvbuf->pend = NULL;
	69	precvbuf->transfer_len = 0;
	70	precvbuf->len = 0;
	71	return res;
	72	}
	73
	74	/free os related resource in struct recv_buf/
	75	int r8712_os_recvbuf_resource_free(struct _adapter *padapter,
	76	struct recv_buf *precvbuf)
	77	{
	78	if (precvbuf->pskb)
	79	dev_kfree_skb_any(precvbuf->pskb);
	80	if (precvbuf->purb) {
	81	usb_kill_urb(precvbuf->purb);
	82	usb_free_urb(precvbuf->purb);
	83	}
	84	return _SUCCESS;
	85	}
	86
	87	void r8712_handle_tkip_mic_err(struct _adapter *padapter, u8 bgroup)
	88	{
	89	union iwreq_data wrqu;
	90	struct iw_michaelmicfailure ev;
	91	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
	92
	93	memset(&ev, 0x00, sizeof(ev));
	94	if (bgroup)
	95	ev.flags \|= IW_MICFAILURE_GROUP;
	96	else
	97	ev.flags \|= IW_MICFAILURE_PAIRWISE;
	98	ev.src_addr.sa_family = ARPHRD_ETHER;
	99	memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN);
	100	memset(&wrqu, 0x00, sizeof(wrqu));
	101	wrqu.data.length = sizeof(ev);
	102	wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE, &wrqu,
	103	(char *)&ev);
	104	}
	105
	106	void r8712_recv_indicatepkt(struct _adapter *padapter,
	107	union recv_frame *precv_frame)
	108	{
	109	struct recv_priv *precvpriv;
	110	struct __queue *pfree_recv_queue;
	111	_pkt *skb;
	112	struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
	113
	114	precvpriv = &(padapter->recvpriv);
	115	pfree_recv_queue = &(precvpriv->free_recv_queue);
	116	skb = precv_frame->u.hdr.pkt;
	117	if (skb == NULL)
	118	goto _recv_indicatepkt_drop;
	119	skb->data = precv_frame->u.hdr.rx_data;
2865d42c	120	skb->len = precv_frame->u.hdr.len;
abf02cfc	121	skb_set_tail_pointer(skb, skb->len);
2865d42c LF	122	if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1))
	123	skb->ip_summed = CHECKSUM_UNNECESSARY;
	124	else
	125	skb->ip_summed = CHECKSUM_NONE;
	126	skb->dev = padapter->pnetdev;
	127	skb->protocol = eth_type_trans(skb, padapter->pnetdev);
	128	netif_rx(skb);
	129	precv_frame->u.hdr.pkt = NULL; /* pointers to NULL before
	130	* r8712_free_recvframe() */
	131	r8712_free_recvframe(precv_frame, pfree_recv_queue);
	132	return;
	133	_recv_indicatepkt_drop:
	134	/enqueue back to free_recv_queue/
	135	if (precv_frame)
	136	r8712_free_recvframe(precv_frame, pfree_recv_queue);
	137	precvpriv->rx_drop++;
	138	}
	139
	140	void r8712_os_read_port(struct _adapter padapter, struct recv_buf precvbuf)
	141	{
	142	struct recv_priv *precvpriv = &padapter->recvpriv;
	143
	144	precvbuf->ref_cnt--;
	145	/free skb in recv_buf/
	146	dev_kfree_skb_any(precvbuf->pskb);
	147	precvbuf->pskb = NULL;
	148	precvbuf->reuse = false;
366ba427	149	if (!precvbuf->irp_pending)
2865d42c LF	150	r8712_read_port(padapter, precvpriv->ff_hwaddr, 0,
	151	(unsigned char *)precvbuf);
	152	}
	153
	154	static void _r8712_reordering_ctrl_timeout_handler (void *FunctionContext)
	155	{
	156	struct recv_reorder_ctrl *preorder_ctrl =
	157	(struct recv_reorder_ctrl *)FunctionContext;
	158
	159	r8712_reordering_ctrl_timeout_handler(preorder_ctrl);
	160	}
	161
	162	void r8712_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
	163	{
	164	struct _adapter *padapter = preorder_ctrl->padapter;
	165
	166	_init_timer(&(preorder_ctrl->reordering_ctrl_timer), padapter->pnetdev,
	167	_r8712_reordering_ctrl_timeout_handler, preorder_ctrl);
	168	}