| // SPDX-License-Identifier: GPL-2.0 |
| /* Copyright(c) 2007 - 2011 Realtek Corporation. */ |
| |
| #define _RTL8188EU_RECV_C_ |
| #include "../include/osdep_service.h" |
| #include "../include/drv_types.h" |
| #include "../include/recv_osdep.h" |
| #include "../include/mlme_osdep.h" |
| |
| #include "../include/usb_ops.h" |
| #include "../include/wifi.h" |
| |
| #include "../include/rtl8188e_hal.h" |
| |
| void rtl8188eu_init_recvbuf(struct recv_buf *precvbuf) |
| { |
| precvbuf->transfer_len = 0; |
| |
| precvbuf->len = 0; |
| |
| precvbuf->ref_cnt = 0; |
| |
| if (precvbuf->pbuf) { |
| precvbuf->pdata = precvbuf->pbuf; |
| precvbuf->phead = precvbuf->pbuf; |
| precvbuf->ptail = precvbuf->pbuf; |
| precvbuf->pend = precvbuf->pdata + MAX_RECVBUF_SZ; |
| } |
| } |
| |
| int rtl8188eu_init_recv_priv(struct adapter *padapter) |
| { |
| struct recv_priv *precvpriv = &padapter->recvpriv; |
| int i, res = _SUCCESS; |
| struct recv_buf *precvbuf; |
| |
| tasklet_init(&precvpriv->recv_tasklet, |
| rtl8188eu_recv_tasklet, |
| (unsigned long)padapter); |
| |
| /* init recv_buf */ |
| rtw_init_queue(&precvpriv->free_recv_buf_queue); |
| |
| precvpriv->pallocated_recv_buf = kzalloc(NR_RECVBUFF * sizeof(struct recv_buf) + 4, |
| GFP_KERNEL); |
| if (!precvpriv->pallocated_recv_buf) { |
| res = _FAIL; |
| goto exit; |
| } |
| memset(precvpriv->pallocated_recv_buf, 0, NR_RECVBUFF * sizeof(struct recv_buf) + 4); |
| |
| precvpriv->precv_buf = (u8 *)N_BYTE_ALIGMENT((size_t)(precvpriv->pallocated_recv_buf), 4); |
| |
| precvbuf = (struct recv_buf *)precvpriv->precv_buf; |
| |
| for (i = 0; i < NR_RECVBUFF; i++) { |
| INIT_LIST_HEAD(&precvbuf->list); |
| spin_lock_init(&precvbuf->recvbuf_lock); |
| precvbuf->alloc_sz = MAX_RECVBUF_SZ; |
| res = rtw_os_recvbuf_resource_alloc(padapter, precvbuf); |
| if (res == _FAIL) |
| break; |
| precvbuf->ref_cnt = 0; |
| precvbuf->adapter = padapter; |
| precvbuf++; |
| } |
| precvpriv->free_recv_buf_queue_cnt = NR_RECVBUFF; |
| skb_queue_head_init(&precvpriv->rx_skb_queue); |
| { |
| int i; |
| size_t tmpaddr = 0; |
| size_t alignment = 0; |
| struct sk_buff *pskb = NULL; |
| |
| skb_queue_head_init(&precvpriv->free_recv_skb_queue); |
| |
| for (i = 0; i < NR_PREALLOC_RECV_SKB; i++) { |
| pskb = __netdev_alloc_skb(padapter->pnetdev, MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ, GFP_KERNEL); |
| if (pskb) { |
| pskb->dev = padapter->pnetdev; |
| tmpaddr = (size_t)pskb->data; |
| alignment = tmpaddr & (RECVBUFF_ALIGN_SZ - 1); |
| skb_reserve(pskb, (RECVBUFF_ALIGN_SZ - alignment)); |
| |
| skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb); |
| } |
| pskb = NULL; |
| } |
| } |
| exit: |
| return res; |
| } |
| |
| void rtl8188eu_free_recv_priv(struct adapter *padapter) |
| { |
| int i; |
| struct recv_buf *precvbuf; |
| struct recv_priv *precvpriv = &padapter->recvpriv; |
| |
| precvbuf = (struct recv_buf *)precvpriv->precv_buf; |
| |
| for (i = 0; i < NR_RECVBUFF; i++) { |
| rtw_os_recvbuf_resource_free(padapter, precvbuf); |
| precvbuf++; |
| } |
| |
| kfree(precvpriv->pallocated_recv_buf); |
| |
| if (skb_queue_len(&precvpriv->rx_skb_queue)) |
| DBG_88E(KERN_WARNING "rx_skb_queue not empty\n"); |
| skb_queue_purge(&precvpriv->rx_skb_queue); |
| |
| if (skb_queue_len(&precvpriv->free_recv_skb_queue)) |
| DBG_88E(KERN_WARNING "free_recv_skb_queue not empty, %d\n", skb_queue_len(&precvpriv->free_recv_skb_queue)); |
| |
| skb_queue_purge(&precvpriv->free_recv_skb_queue); |
| } |