| // 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*/ |
| int r8712_os_recv_resource_alloc(struct _adapter *padapter, |
| union recv_frame *precvframe) |
| { |
| precvframe->u.hdr.pkt_newalloc = NULL; |
| 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) |
| res = _FAIL; |
| 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*/ |
| 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; |
| ether_addr_copy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0]); |
| 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) |
| 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++; |
| } |
| |
| static void _r8712_reordering_ctrl_timeout_handler (struct timer_list *t) |
| { |
| struct recv_reorder_ctrl *preorder_ctrl = |
| from_timer(preorder_ctrl, t, reordering_ctrl_timer); |
| |
| r8712_reordering_ctrl_timeout_handler(preorder_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); |
| } |