LXR linux/drivers/staging/rtl8712/recv

   1// SPDX-License-Identifier: GPL-2.0
   2/******************************************************************************
   3 * recv_linux.c
   4 *
   5 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
   6 * Linux device driver for RTL8192SU
   7 *
   8 * Modifications for inclusion into the Linux staging tree are
   9 * Copyright(c) 2010 Larry Finger. All rights reserved.
  10 *
  11 * Contact information:
  12 * WLAN FAE <wlanfae@realtek.com>.
  13 * Larry Finger <Larry.Finger@lwfinger.net>
  14 *
  15 ******************************************************************************/
  16
  17#define _RECV_OSDEP_C_
  18
  19#include <linux/usb.h>
  20
  21#include "osdep_service.h"
  22#include "drv_types.h"
  23#include "wifi.h"
  24#include "recv_osdep.h"
  25#include "osdep_intf.h"
  26#include "ethernet.h"
  27#include <linux/if_arp.h>
  28#include "usb_ops.h"
  29
  30/*init os related resource in struct recv_priv*/
  31/*alloc os related resource in union recv_frame*/
  32void r8712_os_recv_resource_alloc(struct _adapter *padapter,
  33                                  union recv_frame *precvframe)
  34{
  35        precvframe->u.hdr.pkt_newalloc = NULL;
  36        precvframe->u.hdr.pkt = NULL;
  37}
  38
  39/*alloc os related resource in struct recv_buf*/
  40int r8712_os_recvbuf_resource_alloc(struct _adapter *padapter,
  41                                    struct recv_buf *precvbuf)
  42{
  43        int res = 0;
  44
  45        precvbuf->irp_pending = false;
  46        precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
  47        if (!precvbuf->purb)
  48                res = -ENOMEM;
  49        precvbuf->pskb = NULL;
  50        precvbuf->pallocated_buf = NULL;
  51        precvbuf->pbuf = NULL;
  52        precvbuf->pdata = NULL;
  53        precvbuf->phead = NULL;
  54        precvbuf->ptail = NULL;
  55        precvbuf->pend = NULL;
  56        precvbuf->transfer_len = 0;
  57        precvbuf->len = 0;
  58        return res;
  59}
  60
  61/*free os related resource in struct recv_buf*/
  62void r8712_os_recvbuf_resource_free(struct _adapter *padapter,
  63                                    struct recv_buf *precvbuf)
  64{
  65        if (precvbuf->pskb)
  66                dev_kfree_skb_any(precvbuf->pskb);
  67        if (precvbuf->purb) {
  68                usb_kill_urb(precvbuf->purb);
  69                usb_free_urb(precvbuf->purb);
  70        }
  71}
  72
  73void r8712_handle_tkip_mic_err(struct _adapter *adapter, u8 bgroup)
  74{
  75        union iwreq_data wrqu;
  76        struct iw_michaelmicfailure ev;
  77        struct mlme_priv *mlmepriv  = &adapter->mlmepriv;
  78
  79        memset(&ev, 0x00, sizeof(ev));
  80        if (bgroup)
  81                ev.flags |= IW_MICFAILURE_GROUP;
  82        else
  83                ev.flags |= IW_MICFAILURE_PAIRWISE;
  84        ev.src_addr.sa_family = ARPHRD_ETHER;
  85        ether_addr_copy(ev.src_addr.sa_data, &mlmepriv->assoc_bssid[0]);
  86        memset(&wrqu, 0x00, sizeof(wrqu));
  87        wrqu.data.length = sizeof(ev);
  88        wireless_send_event(adapter->pnetdev, IWEVMICHAELMICFAILURE, &wrqu,
  89                            (char *)&ev);
  90}
  91
  92void r8712_recv_indicatepkt(struct _adapter *adapter,
  93                            union recv_frame *recvframe)
  94{
  95        struct recv_priv *recvpriv;
  96        struct  __queue *free_recv_queue;
  97        _pkt *skb;
  98        struct rx_pkt_attrib *attrib = &recvframe->u.hdr.attrib;
  99
 100        recvpriv = &adapter->recvpriv;
 101        free_recv_queue = &recvpriv->free_recv_queue;
 102        skb = recvframe->u.hdr.pkt;
 103        if (!skb)
 104                goto _recv_indicatepkt_drop;
 105        skb->data = recvframe->u.hdr.rx_data;
 106        skb->len = recvframe->u.hdr.len;
 107        skb_set_tail_pointer(skb, skb->len);
 108        if ((attrib->tcpchk_valid == 1) && (attrib->tcp_chkrpt == 1))
 109                skb->ip_summed = CHECKSUM_UNNECESSARY;
 110        else
 111                skb->ip_summed = CHECKSUM_NONE;
 112        skb->dev = adapter->pnetdev;
 113        skb->protocol = eth_type_trans(skb, adapter->pnetdev);
 114        netif_rx(skb);
 115        recvframe->u.hdr.pkt = NULL; /* pointers to NULL before
 116                                      * r8712_free_recvframe()
 117                                      */
 118        r8712_free_recvframe(recvframe, free_recv_queue);
 119        return;
 120_recv_indicatepkt_drop:
 121         /*enqueue back to free_recv_queue*/
 122        if (recvframe)
 123                r8712_free_recvframe(recvframe, free_recv_queue);
 124        recvpriv->rx_drop++;
 125}
 126
 127static void _r8712_reordering_ctrl_timeout_handler (struct timer_list *t)
 128{
 129        struct recv_reorder_ctrl *reorder_ctrl =
 130                         from_timer(reorder_ctrl, t, reordering_ctrl_timer);
 131
 132        r8712_reordering_ctrl_timeout_handler(reorder_ctrl);
 133}
 134
 135void r8712_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
 136{
 137        timer_setup(&preorder_ctrl->reordering_ctrl_timer,
 138                    _r8712_reordering_ctrl_timeout_handler, 0);
 139}
 140