drivers/staging/rtl8188eu/os_dep/recv_linux.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  *
  19  ******************************************************************************/
  20 #define _RECV_OSDEP_C_
  21
  22 #include <osdep_service.h>
  23 #include <drv_types.h>
  24
  25 #include <wifi.h>
  26 #include <recv_osdep.h>
  27
  28 #include <osdep_intf.h>
  29 #include <usb_ops.h>
  30
  31 /* init os related resource in struct recv_priv */
  32 int rtw_os_recv_resource_init(struct recv_priv *precvpriv,
  33                               struct adapter *padapter)
  34 {
  35         return _SUCCESS;
  36 }
  37
  38 /* alloc os related resource in struct recv_frame */
  39 int rtw_os_recv_resource_alloc(struct adapter *padapter,
  40                                struct recv_frame *precvframe)
  41 {
  42         precvframe->pkt_newalloc = NULL;
  43         precvframe->pkt = NULL;
  44         return _SUCCESS;
  45 }
  46
  47 /* free os related resource in struct recv_frame */
  48 void rtw_os_recv_resource_free(struct recv_priv *precvpriv)
  49 {
  50 }
  51
  52 /* alloc os related resource in struct recv_buf */
  53 int rtw_os_recvbuf_resource_alloc(struct adapter *padapter,
  54                                   struct recv_buf *precvbuf)
  55 {
  56         int res = _SUCCESS;
  57
  58         precvbuf->irp_pending = false;
  59         precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
  60         if (precvbuf->purb == NULL)
  61                 res = _FAIL;
  62         precvbuf->pskb = NULL;
  63         precvbuf->reuse = false;
  64         precvbuf->pallocated_buf = NULL;
  65         precvbuf->pbuf = NULL;
  66         precvbuf->pdata = NULL;
  67         precvbuf->phead = NULL;
  68         precvbuf->ptail = NULL;
  69         precvbuf->pend = NULL;
  70         precvbuf->transfer_len = 0;
  71         precvbuf->len = 0;
  72         return res;
  73 }
  74
  75 /* free os related resource in struct recv_buf */
  76 int rtw_os_recvbuf_resource_free(struct adapter *padapter,
  77                                  struct recv_buf *precvbuf)
  78 {
  79         usb_free_urb(precvbuf->purb);
  80         return _SUCCESS;
  81 }
  82
  83 void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup)
  84 {
  85         union iwreq_data wrqu;
  86         struct iw_michaelmicfailure    ev;
  87         struct mlme_priv *pmlmepriv  = &padapter->mlmepriv;
  88         struct security_priv    *psecuritypriv = &padapter->securitypriv;
  89         u32 cur_time = 0;
  90
  91         if (psecuritypriv->last_mic_err_time == 0) {
  92                 psecuritypriv->last_mic_err_time = jiffies;
  93         } else {
  94                 cur_time = jiffies;
  95
  96                 if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ) {
  97                         psecuritypriv->btkip_countermeasure = true;
  98                         psecuritypriv->last_mic_err_time = 0;
  99                         psecuritypriv->btkip_countermeasure_time = cur_time;
 100                 } else {
 101                         psecuritypriv->last_mic_err_time = jiffies;
 102                 }
 103         }
 104
 105         _rtw_memset(&ev, 0x00, sizeof(ev));
 106         if (bgroup)
 107                 ev.flags |= IW_MICFAILURE_GROUP;
 108         else
 109                 ev.flags |= IW_MICFAILURE_PAIRWISE;
 110
 111         ev.src_addr.sa_family = ARPHRD_ETHER;
 112         memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN);
 113         _rtw_memset(&wrqu, 0x00, sizeof(wrqu));
 114         wrqu.data.length = sizeof(ev);
 115         wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE,
 116                             &wrqu, (char *)&ev);
 117 }
 118
 119 void rtw_hostapd_mlme_rx(struct adapter *padapter,
 120                          struct recv_frame *precv_frame)
 121 {
 122 }
 123
 124 int rtw_recv_indicatepkt(struct adapter *padapter,
 125                          struct recv_frame *precv_frame)
 126 {
 127         struct recv_priv *precvpriv;
 128         struct __queue *pfree_recv_queue;
 129         struct sk_buff *skb;
 130         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 131
 132
 133         precvpriv = &(padapter->recvpriv);
 134         pfree_recv_queue = &(precvpriv->free_recv_queue);
 135
 136         skb = precv_frame->pkt;
 137         if (skb == NULL) {
 138                 RT_TRACE(_module_recv_osdep_c_, _drv_err_,
 139                          ("rtw_recv_indicatepkt():skb == NULL something wrong!!!!\n"));
 140                 goto _recv_indicatepkt_drop;
 141         }
 142
 143         RT_TRACE(_module_recv_osdep_c_, _drv_info_,
 144                  ("rtw_recv_indicatepkt():skb != NULL !!!\n"));
 145         RT_TRACE(_module_recv_osdep_c_, _drv_info_,
 146                  ("rtw_recv_indicatepkt():precv_frame->rx_head =%p  precv_frame->hdr.rx_data =%p\n",
 147                  precv_frame->rx_head, precv_frame->rx_data));
 148         RT_TRACE(_module_recv_osdep_c_, _drv_info_,
 149                  ("precv_frame->hdr.rx_tail =%p precv_frame->rx_end =%p precv_frame->hdr.len =%d\n",
 150                  precv_frame->rx_tail, precv_frame->rx_end,
 151                  precv_frame->len));
 152
 153         skb->data = precv_frame->rx_data;
 154
 155         skb_set_tail_pointer(skb, precv_frame->len);
 156
 157         skb->len = precv_frame->len;
 158
 159         RT_TRACE(_module_recv_osdep_c_, _drv_info_,
 160                  ("skb->head =%p skb->data =%p skb->tail =%p skb->end =%p skb->len =%d\n",
 161                  skb->head, skb->data, skb_tail_pointer(skb),
 162                  skb_end_pointer(skb), skb->len));
 163
 164         if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
 165                 struct sk_buff *pskb2 = NULL;
 166                 struct sta_info *psta = NULL;
 167                 struct sta_priv *pstapriv = &padapter->stapriv;
 168                 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
 169                 int bmcast = IS_MCAST(pattrib->dst);
 170
 171                 if (memcmp(pattrib->dst, myid(&padapter->eeprompriv),
 172                            ETH_ALEN)) {
 173                         if (bmcast) {
 174                                 psta = rtw_get_bcmc_stainfo(padapter);
 175                                 pskb2 = skb_clone(skb, GFP_ATOMIC);
 176                         } else {
 177                                 psta = rtw_get_stainfo(pstapriv, pattrib->dst);
 178                         }
 179
 180                         if (psta) {
 181                                 struct net_device *pnetdev;
 182
 183                                 pnetdev = (struct net_device *)padapter->pnetdev;
 184                                 skb->dev = pnetdev;
 185                                 skb_set_queue_mapping(skb, rtw_recv_select_queue(skb));
 186
 187                                 rtw_xmit_entry(skb, pnetdev);
 188
 189                                 if (bmcast)
 190                                         skb = pskb2;
 191                                 else
 192                                         goto _recv_indicatepkt_end;
 193                         }
 194                 }
 195         }
 196
 197         rcu_read_lock();
 198         rcu_dereference(padapter->pnetdev->rx_handler_data);
 199         rcu_read_unlock();
 200
 201         skb->ip_summed = CHECKSUM_NONE;
 202         skb->dev = padapter->pnetdev;
 203         skb->protocol = eth_type_trans(skb, padapter->pnetdev);
 204
 205         netif_rx(skb);
 206
 207 _recv_indicatepkt_end:
 208
 209         /*  pointers to NULL before rtw_free_recvframe() */
 210         precv_frame->pkt = NULL;
 211
 212         rtw_free_recvframe(precv_frame, pfree_recv_queue);
 213
 214         RT_TRACE(_module_recv_osdep_c_, _drv_info_,
 215                  ("\n rtw_recv_indicatepkt :after netif_rx!!!!\n"));
 216
 217
 218         return _SUCCESS;
 219
 220 _recv_indicatepkt_drop:
 221
 222          /* enqueue back to free_recv_queue */
 223         rtw_free_recvframe(precv_frame, pfree_recv_queue);
 224
 225          return _FAIL;
 226 }
 227
 228 void rtw_os_read_port(struct adapter *padapter, struct recv_buf *precvbuf)
 229 {
 230         struct recv_priv *precvpriv = &padapter->recvpriv;
 231
 232         precvbuf->ref_cnt--;
 233         /* free skb in recv_buf */
 234         dev_kfree_skb_any(precvbuf->pskb);
 235         precvbuf->pskb = NULL;
 236         precvbuf->reuse = false;
 237         if (!precvbuf->irp_pending)
 238                 rtw_read_port(padapter, precvpriv->ff_hwaddr, 0,
 239                               (unsigned char *)precvbuf);
 240 }
 241
 242 static void _rtw_reordering_ctrl_timeout_handler(void *func_context)
 243 {
 244         struct recv_reorder_ctrl *preorder_ctrl;
 245
 246         preorder_ctrl = (struct recv_reorder_ctrl *)func_context;
 247         rtw_reordering_ctrl_timeout_handler(preorder_ctrl);
 248 }
 249
 250 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
 251 {
 252         struct adapter *padapter = preorder_ctrl->padapter;
 253
 254         _init_timer(&(preorder_ctrl->reordering_ctrl_timer), padapter->pnetdev, _rtw_reordering_ctrl_timeout_handler, preorder_ctrl);
 255 }