kernel/drivers/staging/rtl8723au/hal/rtl8723au_recv.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  ******************************************************************************/
  15 #define _RTL8192CU_RECV_C_
  16 #include <osdep_service.h>
  17 #include <drv_types.h>
  18 #include <recv_osdep.h>
  19 #include <mlme_osdep.h>
  20 #include <linux/ip.h>
  21 #include <linux/if_ether.h>
  22 #include <usb_ops.h>
  23 #include <wifi.h>
  24 #include <rtl8723a_hal.h>
  25
  26 int rtl8723au_init_recv_priv(struct rtw_adapter *padapter)
  27 {
  28         struct recv_priv *precvpriv = &padapter->recvpriv;
  29         int i, size, res = _SUCCESS;
  30         struct recv_buf *precvbuf;
  31         unsigned long tmpaddr;
  32         unsigned long alignment;
  33         struct sk_buff *pskb;
  34
  35         tasklet_init(&precvpriv->recv_tasklet,
  36                      (void(*)(unsigned long))rtl8723au_recv_tasklet,
  37                      (unsigned long)padapter);
  38
  39         precvpriv->int_in_urb = usb_alloc_urb(0, GFP_KERNEL);
  40         if (!precvpriv->int_in_urb)
  41                 DBG_8723A("alloc_urb for interrupt in endpoint fail !!!!\n");
  42         precvpriv->int_in_buf = kzalloc(USB_INTR_CONTENT_LENGTH, GFP_KERNEL);
  43         if (!precvpriv->int_in_buf)
  44                 DBG_8723A("alloc_mem for interrupt in endpoint fail !!!!\n");
  45
  46         size = NR_RECVBUFF * sizeof(struct recv_buf);
  47         precvpriv->precv_buf = kzalloc(size, GFP_KERNEL);
  48         if (!precvpriv->precv_buf) {
  49                 res = _FAIL;
  50                 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
  51                          "alloc recv_buf fail!\n");
  52                 goto exit;
  53         }
  54
  55         precvbuf = (struct recv_buf *)precvpriv->precv_buf;
  56
  57         for (i = 0; i < NR_RECVBUFF; i++) {
  58                 INIT_LIST_HEAD(&precvbuf->list);
  59
  60                 precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
  61                 if (!precvbuf->purb)
  62                         break;
  63
  64                 precvbuf->adapter = padapter;
  65
  66                 precvbuf++;
  67         }
  68
  69         skb_queue_head_init(&precvpriv->rx_skb_queue);
  70         skb_queue_head_init(&precvpriv->free_recv_skb_queue);
  71
  72         for (i = 0; i < NR_PREALLOC_RECV_SKB; i++) {
  73                 size = MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ;
  74                 pskb = __netdev_alloc_skb(padapter->pnetdev, size, GFP_KERNEL);
  75
  76                 if (pskb) {
  77                         pskb->dev = padapter->pnetdev;
  78
  79                         tmpaddr = (unsigned long)pskb->data;
  80                         alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1);
  81                         skb_reserve(pskb, (RECVBUFF_ALIGN_SZ - alignment));
  82
  83                         skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
  84                 }
  85
  86                 pskb = NULL;
  87         }
  88
  89 exit:
  90         return res;
  91 }
  92
  93 void rtl8723au_free_recv_priv(struct rtw_adapter *padapter)
  94 {
  95         int     i;
  96         struct recv_buf *precvbuf;
  97         struct recv_priv *precvpriv = &padapter->recvpriv;
  98
  99         precvbuf = (struct recv_buf *)precvpriv->precv_buf;
 100
 101         for (i = 0; i < NR_RECVBUFF; i++) {
 102                 usb_free_urb(precvbuf->purb);
 103
 104                 if (precvbuf->pskb)
 105                         dev_kfree_skb_any(precvbuf->pskb);
 106
 107                 precvbuf++;
 108         }
 109
 110         kfree(precvpriv->precv_buf);
 111
 112         usb_free_urb(precvpriv->int_in_urb);
 113         kfree(precvpriv->int_in_buf);
 114
 115         if (skb_queue_len(&precvpriv->rx_skb_queue))
 116                 DBG_8723A(KERN_WARNING "rx_skb_queue not empty\n");
 117
 118         skb_queue_purge(&precvpriv->rx_skb_queue);
 119
 120         if (skb_queue_len(&precvpriv->free_recv_skb_queue)) {
 121                 DBG_8723A(KERN_WARNING "free_recv_skb_queue not empty, %d\n",
 122                           skb_queue_len(&precvpriv->free_recv_skb_queue));
 123         }
 124
 125         skb_queue_purge(&precvpriv->free_recv_skb_queue);
 126 }
 127
 128 struct recv_stat_cpu {
 129         u32 rxdw0;
 130         u32 rxdw1;
 131         u32 rxdw2;
 132         u32 rxdw3;
 133         u32 rxdw4;
 134         u32 rxdw5;
 135 };
 136
 137 void update_recvframe_attrib(struct recv_frame *precvframe,
 138                              struct recv_stat *prxstat)
 139 {
 140         struct rx_pkt_attrib *pattrib;
 141         struct recv_stat_cpu report;
 142         struct rxreport_8723a *prxreport;
 143
 144         report.rxdw0 = le32_to_cpu(prxstat->rxdw0);
 145         report.rxdw1 = le32_to_cpu(prxstat->rxdw1);
 146         report.rxdw2 = le32_to_cpu(prxstat->rxdw2);
 147         report.rxdw3 = le32_to_cpu(prxstat->rxdw3);
 148         report.rxdw4 = le32_to_cpu(prxstat->rxdw4);
 149         report.rxdw5 = le32_to_cpu(prxstat->rxdw5);
 150
 151         prxreport = (struct rxreport_8723a *)&report;
 152
 153         pattrib = &precvframe->attrib;
 154         memset(pattrib, 0, sizeof(struct rx_pkt_attrib));
 155
 156         /*  update rx report to recv_frame attribute */
 157         pattrib->pkt_len = (u16)prxreport->pktlen;
 158         pattrib->drvinfo_sz = (u8)(prxreport->drvinfosize << 3);
 159         pattrib->physt = (u8)prxreport->physt;
 160
 161         pattrib->crc_err = (u8)prxreport->crc32;
 162         pattrib->icv_err = (u8)prxreport->icverr;
 163
 164         pattrib->bdecrypted = (u8)(prxreport->swdec ? 0 : 1);
 165         pattrib->encrypt = (u8)prxreport->security;
 166
 167         pattrib->qos = (u8)prxreport->qos;
 168         pattrib->priority = (u8)prxreport->tid;
 169
 170         pattrib->amsdu = (u8)prxreport->amsdu;
 171
 172         pattrib->seq_num = (u16)prxreport->seq;
 173         pattrib->frag_num = (u8)prxreport->frag;
 174         pattrib->mfrag = (u8)prxreport->mf;
 175         pattrib->mdata = (u8)prxreport->md;
 176
 177         pattrib->mcs_rate = (u8)prxreport->rxmcs;
 178         pattrib->rxht = (u8)prxreport->rxht;
 179 }
 180
 181 void update_recvframe_phyinfo(struct recv_frame *precvframe,
 182                               struct phy_stat *pphy_status)
 183 {
 184         struct rtw_adapter *padapter = precvframe->adapter;
 185         struct rx_pkt_attrib *pattrib = &precvframe->attrib;
 186         struct hal_data_8723a *pHalData = GET_HAL_DATA(padapter);
 187         struct phy_info *pPHYInfo = &pattrib->phy_info;
 188         struct odm_packet_info pkt_info;
 189         u8 *sa = NULL, *da;
 190         struct sta_priv *pstapriv;
 191         struct sta_info *psta;
 192         struct sk_buff *skb = precvframe->pkt;
 193         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 194         bool matchbssid = false;
 195         u8 *bssid;
 196
 197         matchbssid = !ieee80211_is_ctl(hdr->frame_control) &&
 198                       !pattrib->icv_err && !pattrib->crc_err;
 199
 200         if (matchbssid) {
 201                 switch (hdr->frame_control &
 202                         cpu_to_le16(IEEE80211_FCTL_TODS |
 203                                     IEEE80211_FCTL_FROMDS)) {
 204                 case cpu_to_le16(IEEE80211_FCTL_TODS):
 205                         bssid = hdr->addr1;
 206                         break;
 207                 case cpu_to_le16(IEEE80211_FCTL_FROMDS):
 208                         bssid = hdr->addr2;
 209                         break;
 210                 case cpu_to_le16(0):
 211                         bssid = hdr->addr3;
 212                         break;
 213                 default:
 214                         bssid = NULL;
 215                         matchbssid = false;
 216                 }
 217
 218                 if (bssid)
 219                         matchbssid = ether_addr_equal(
 220                                 get_bssid(&padapter->mlmepriv), bssid);
 221         }
 222
 223         pkt_info.bPacketMatchBSSID = matchbssid;
 224
 225         da = ieee80211_get_DA(hdr);
 226         pkt_info.bPacketToSelf = pkt_info.bPacketMatchBSSID &&
 227                 (!memcmp(da, myid(&padapter->eeprompriv), ETH_ALEN));
 228
 229         pkt_info.bPacketBeacon = pkt_info.bPacketMatchBSSID &&
 230                 ieee80211_is_beacon(hdr->frame_control);
 231
 232         pkt_info.StationID = 0xFF;
 233         if (pkt_info.bPacketBeacon) {
 234                 if (check_fwstate(&padapter->mlmepriv, WIFI_STATION_STATE) == true)
 235                         sa = padapter->mlmepriv.cur_network.network.MacAddress;
 236                 /* to do Ad-hoc */
 237         } else {
 238                 sa = ieee80211_get_SA(hdr);
 239         }
 240
 241         pstapriv = &padapter->stapriv;
 242         psta = rtw_get_stainfo23a(pstapriv, sa);
 243         if (psta) {
 244                 pkt_info.StationID = psta->mac_id;
 245                 /* printk("%s ==> StationID(%d)\n", __func__, pkt_info.StationID); */
 246         }
 247         pkt_info.Rate = pattrib->mcs_rate;
 248
 249         ODM_PhyStatusQuery23a(&pHalData->odmpriv, pPHYInfo,
 250                               (u8 *)pphy_status, &pkt_info);
 251         precvframe->psta = NULL;
 252         if (pkt_info.bPacketMatchBSSID &&
 253             (check_fwstate(&padapter->mlmepriv, WIFI_AP_STATE) == true)) {
 254                 if (psta) {
 255                         precvframe->psta = psta;
 256                         rtl8723a_process_phy_info(padapter, precvframe);
 257                 }
 258         } else if (pkt_info.bPacketToSelf || pkt_info.bPacketBeacon) {
 259                 if (check_fwstate(&padapter->mlmepriv,
 260                                   WIFI_ADHOC_STATE|WIFI_ADHOC_MASTER_STATE) ==
 261                     true) {
 262                         if (psta)
 263                                 precvframe->psta = psta;
 264                 }
 265                 rtl8723a_process_phy_info(padapter, precvframe);
 266         }
 267 }