LXR linux/drivers/staging/rtl8188eu/hal/rtl8188eu

   1// SPDX-License-Identifier: GPL-2.0
   2/******************************************************************************
   3 *
   4 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   5 *
   6 ******************************************************************************/
   7#define _RTL8188EU_RECV_C_
   8#include <linux/kmemleak.h>
   9#include <osdep_service.h>
  10#include <drv_types.h>
  11#include <recv_osdep.h>
  12#include <mlme_osdep.h>
  13
  14#include <usb_ops_linux.h>
  15#include <wifi.h>
  16
  17#include <rtl8188e_hal.h>
  18
  19int rtw_hal_init_recv_priv(struct adapter *padapter)
  20{
  21        struct recv_priv *precvpriv = &padapter->recvpriv;
  22        int i, res = _SUCCESS;
  23        struct recv_buf *precvbuf;
  24
  25        tasklet_setup(&precvpriv->recv_tasklet, rtl8188eu_recv_tasklet);
  26
  27        /* init recv_buf */
  28        _rtw_init_queue(&precvpriv->free_recv_buf_queue);
  29
  30        precvpriv->precv_buf =
  31                kcalloc(NR_RECVBUFF, sizeof(struct recv_buf), GFP_KERNEL);
  32        if (!precvpriv->precv_buf) {
  33                res = _FAIL;
  34                goto exit;
  35        }
  36        precvbuf = precvpriv->precv_buf;
  37
  38        for (i = 0; i < NR_RECVBUFF; i++) {
  39                res = rtw_os_recvbuf_resource_alloc(precvbuf);
  40                if (res == _FAIL)
  41                        break;
  42                precvbuf->adapter = padapter;
  43                precvbuf++;
  44        }
  45        skb_queue_head_init(&precvpriv->rx_skb_queue);
  46        {
  47                int i;
  48                struct sk_buff *pskb = NULL;
  49
  50                skb_queue_head_init(&precvpriv->free_recv_skb_queue);
  51
  52                for (i = 0; i < NR_PREALLOC_RECV_SKB; i++) {
  53                        pskb = __netdev_alloc_skb(padapter->pnetdev,
  54                                                  MAX_RECVBUF_SZ, GFP_KERNEL);
  55                        if (pskb) {
  56                                kmemleak_not_leak(pskb);
  57                                skb_queue_tail(&precvpriv->free_recv_skb_queue,
  58                                               pskb);
  59                        }
  60                        pskb = NULL;
  61                }
  62        }
  63exit:
  64        return res;
  65}
  66
  67void rtw_hal_free_recv_priv(struct adapter *padapter)
  68{
  69        int i;
  70        struct recv_buf *precvbuf;
  71        struct recv_priv *precvpriv = &padapter->recvpriv;
  72
  73        precvbuf = precvpriv->precv_buf;
  74
  75        for (i = 0; i < NR_RECVBUFF; i++) {
  76                usb_free_urb(precvbuf->purb);
  77                precvbuf++;
  78        }
  79
  80        kfree(precvpriv->precv_buf);
  81        skb_queue_purge(&precvpriv->rx_skb_queue);
  82        skb_queue_purge(&precvpriv->free_recv_skb_queue);
  83}
  84