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// SPDX-License-Identifier: GPL-2.0
/******************************************************************************
* recv_linux.c
*
* Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
* Linux device driver for RTL8192SU
*
* 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*/
void r8712_os_recv_resource_alloc(struct _adapter *padapter,
union recv_frame *precvframe)
{
precvframe->u.hdr.pkt_newalloc = NULL;
precvframe->u.hdr.pkt = NULL;
}
/*alloc os related resource in struct recv_buf*/
int r8712_os_recvbuf_resource_alloc(struct _adapter *padapter,
struct recv_buf *precvbuf)
{
int res = 0;
precvbuf->irp_pending = false;
precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
if (!precvbuf->purb)
res = -ENOMEM;
precvbuf->pskb = NULL;
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*/
void 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);
}
}
void r8712_handle_tkip_mic_err(struct _adapter *adapter, u8 bgroup)
{
union iwreq_data wrqu;
struct iw_michaelmicfailure ev;
struct mlme_priv *mlmepriv = &adapter->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;
ether_addr_copy(ev.src_addr.sa_data, &mlmepriv->assoc_bssid[0]);
memset(&wrqu, 0x00, sizeof(wrqu));
wrqu.data.length = sizeof(ev);
wireless_send_event(adapter->pnetdev, IWEVMICHAELMICFAILURE, &wrqu,
(char *)&ev);
}
void r8712_recv_indicatepkt(struct _adapter *adapter,
union recv_frame *recvframe)
{
struct recv_priv *recvpriv;
struct __queue *free_recv_queue;
_pkt *skb;
struct rx_pkt_attrib *attrib = &recvframe->u.hdr.attrib;
recvpriv = &adapter->recvpriv;
free_recv_queue = &recvpriv->free_recv_queue;
skb = recvframe->u.hdr.pkt;
if (!skb)
goto _recv_indicatepkt_drop;
skb->data = recvframe->u.hdr.rx_data;
skb->len = recvframe->u.hdr.len;
skb_set_tail_pointer(skb, skb->len);
if ((attrib->tcpchk_valid == 1) && (attrib->tcp_chkrpt == 1))
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb->ip_summed = CHECKSUM_NONE;
skb->dev = adapter->pnetdev;
skb->protocol = eth_type_trans(skb, adapter->pnetdev);
netif_rx(skb);
recvframe->u.hdr.pkt = NULL; /* pointers to NULL before
* r8712_free_recvframe()
*/
r8712_free_recvframe(recvframe, free_recv_queue);
return;
_recv_indicatepkt_drop:
/*enqueue back to free_recv_queue*/
if (recvframe)
r8712_free_recvframe(recvframe, free_recv_queue);
recvpriv->rx_drop++;
}
static void _r8712_reordering_ctrl_timeout_handler (struct timer_list *t)
{
struct recv_reorder_ctrl *reorder_ctrl =
from_timer(reorder_ctrl, t, reordering_ctrl_timer);
r8712_reordering_ctrl_timeout_handler(reorder_ctrl);
}
void r8712_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
{
timer_setup(&preorder_ctrl->reordering_ctrl_timer,
_r8712_reordering_ctrl_timeout_handler, 0);
}
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