drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c

   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
  19 int 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         }
  63 exit:
  64         return res;
  65 }
  66
  67 void 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 }