drivers/staging/rtl8723bs/os_dep/recv_linux.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   5  *
   6  ******************************************************************************/
   7 #define _RECV_OSDEP_C_
   8
   9 #include <drv_types.h>
  10 #include <rtw_debug.h>
  11 #include <linux/jiffies.h>
  12
  13 void rtw_os_free_recvframe(union recv_frame *precvframe)
  14 {
  15         if (precvframe->u.hdr.pkt)
  16         {
  17                 dev_kfree_skb_any(precvframe->u.hdr.pkt);/* free skb by driver */
  18
  19                 precvframe->u.hdr.pkt = NULL;
  20         }
  21 }
  22
  23 /* alloc os related resource in union recv_frame */
  24 int rtw_os_recv_resource_alloc(struct adapter *padapter, union recv_frame *precvframe)
  25 {
  26         int     res = _SUCCESS;
  27
  28         precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL;
  29
  30         return res;
  31 }
  32
  33 /* free os related resource in union recv_frame */
  34 void rtw_os_recv_resource_free(struct recv_priv *precvpriv)
  35 {
  36         sint i;
  37         union recv_frame *precvframe;
  38
  39         precvframe = (union recv_frame*) precvpriv->precv_frame_buf;
  40
  41         for (i = 0; i < NR_RECVFRAME; i++)
  42         {
  43                 if (precvframe->u.hdr.pkt)
  44                 {
  45                         dev_kfree_skb_any(precvframe->u.hdr.pkt);/* free skb by driver */
  46                         precvframe->u.hdr.pkt = NULL;
  47                 }
  48                 precvframe++;
  49         }
  50 }
  51
  52 /* free os related resource in struct recv_buf */
  53 int rtw_os_recvbuf_resource_free(struct adapter *padapter, struct recv_buf *precvbuf)
  54 {
  55         int ret = _SUCCESS;
  56
  57         if (precvbuf->pskb)
  58         {
  59                 dev_kfree_skb_any(precvbuf->pskb);
  60         }
  61         return ret;
  62
  63 }
  64
  65 _pkt *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, u16 nSubframe_Length, u8 *pdata)
  66 {
  67         u16 eth_type;
  68         _pkt *sub_skb;
  69         struct rx_pkt_attrib *pattrib;
  70
  71         pattrib = &prframe->u.hdr.attrib;
  72
  73         sub_skb = rtw_skb_alloc(nSubframe_Length + 12);
  74         if (sub_skb)
  75         {
  76                 skb_reserve(sub_skb, 12);
  77                 skb_put_data(sub_skb, (pdata + ETH_HLEN), nSubframe_Length);
  78         }
  79         else
  80         {
  81                 sub_skb = rtw_skb_clone(prframe->u.hdr.pkt);
  82                 if (sub_skb)
  83                 {
  84                         sub_skb->data = pdata + ETH_HLEN;
  85                         sub_skb->len = nSubframe_Length;
  86                         skb_set_tail_pointer(sub_skb, nSubframe_Length);
  87                 }
  88                 else
  89                 {
  90                         DBG_871X("%s(): rtw_skb_clone() Fail!!!\n", __func__);
  91                         return NULL;
  92                 }
  93         }
  94
  95         eth_type = RTW_GET_BE16(&sub_skb->data[6]);
  96
  97         if (sub_skb->len >= 8 &&
  98                 ((!memcmp(sub_skb->data, rtw_rfc1042_header, SNAP_SIZE) &&
  99                   eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
 100                  !memcmp(sub_skb->data, rtw_bridge_tunnel_header, SNAP_SIZE))) {
 101                 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
 102                 skb_pull(sub_skb, SNAP_SIZE);
 103                 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
 104                 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
 105         } else {
 106                 __be16 len;
 107                 /* Leave Ethernet header part of hdr and full payload */
 108                 len = htons(sub_skb->len);
 109                 memcpy(skb_push(sub_skb, 2), &len, 2);
 110                 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN);
 111                 memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN);
 112         }
 113
 114         return sub_skb;
 115 }
 116
 117 void rtw_os_recv_indicate_pkt(struct adapter *padapter, _pkt *pkt, struct rx_pkt_attrib *pattrib)
 118 {
 119         struct mlme_priv*pmlmepriv = &padapter->mlmepriv;
 120         int ret;
 121
 122         /* Indicat the packets to upper layer */
 123         if (pkt) {
 124                 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true)
 125                 {
 126                         _pkt *pskb2 = NULL;
 127                         struct sta_info *psta = NULL;
 128                         struct sta_priv *pstapriv = &padapter->stapriv;
 129                         int bmcast = IS_MCAST(pattrib->dst);
 130
 131                         /* DBG_871X("bmcast =%d\n", bmcast); */
 132
 133                         if (memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN))
 134                         {
 135                                 /* DBG_871X("not ap psta =%p, addr =%pM\n", psta, pattrib->dst); */
 136
 137                                 if (bmcast)
 138                                 {
 139                                         psta = rtw_get_bcmc_stainfo(padapter);
 140                                         pskb2 = rtw_skb_clone(pkt);
 141                                 } else {
 142                                         psta = rtw_get_stainfo(pstapriv, pattrib->dst);
 143                                 }
 144
 145                                 if (psta)
 146                                 {
 147                                         struct net_device *pnetdev = (struct net_device*)padapter->pnetdev;
 148
 149                                         /* DBG_871X("directly forwarding to the rtw_xmit_entry\n"); */
 150
 151                                         /* skb->ip_summed = CHECKSUM_NONE; */
 152                                         pkt->dev = pnetdev;
 153                                         skb_set_queue_mapping(pkt, rtw_recv_select_queue(pkt));
 154
 155                                         _rtw_xmit_entry(pkt, pnetdev);
 156
 157                                         if (bmcast && (pskb2 != NULL)) {
 158                                                 pkt = pskb2;
 159                                                 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_mcast);
 160                                         } else {
 161                                                 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_forward);
 162                                                 return;
 163                                         }
 164                                 }
 165                         }
 166                         else/*  to APself */
 167                         {
 168                                 /* DBG_871X("to APSelf\n"); */
 169                                 DBG_COUNTER(padapter->rx_logs.os_indicate_ap_self);
 170                         }
 171                 }
 172
 173                 pkt->protocol = eth_type_trans(pkt, padapter->pnetdev);
 174                 pkt->dev = padapter->pnetdev;
 175
 176 #ifdef CONFIG_TCP_CSUM_OFFLOAD_RX
 177                 if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1))
 178                         pkt->ip_summed = CHECKSUM_UNNECESSARY;
 179                 else
 180                         pkt->ip_summed = CHECKSUM_NONE;
 181
 182 #else /* !CONFIG_TCP_CSUM_OFFLOAD_RX */
 183                 pkt->ip_summed = CHECKSUM_NONE;
 184 #endif /* CONFIG_TCP_CSUM_OFFLOAD_RX */
 185
 186                 ret = rtw_netif_rx(padapter->pnetdev, pkt);
 187                 if (ret == NET_RX_SUCCESS)
 188                         DBG_COUNTER(padapter->rx_logs.os_netif_ok);
 189                 else
 190                         DBG_COUNTER(padapter->rx_logs.os_netif_err);
 191         }
 192 }
 193
 194 void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup)
 195 {
 196         enum nl80211_key_type key_type = 0;
 197         union iwreq_data wrqu;
 198         struct iw_michaelmicfailure    ev;
 199         struct mlme_priv*              pmlmepriv  = &padapter->mlmepriv;
 200         struct security_priv *psecuritypriv = &padapter->securitypriv;
 201         unsigned long cur_time = 0;
 202
 203         if (psecuritypriv->last_mic_err_time == 0)
 204         {
 205                 psecuritypriv->last_mic_err_time = jiffies;
 206         }
 207         else
 208         {
 209                 cur_time = jiffies;
 210
 211                 if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ)
 212                 {
 213                         psecuritypriv->btkip_countermeasure = true;
 214                         psecuritypriv->last_mic_err_time = 0;
 215                         psecuritypriv->btkip_countermeasure_time = cur_time;
 216                 }
 217                 else
 218                 {
 219                         psecuritypriv->last_mic_err_time = jiffies;
 220                 }
 221         }
 222
 223         if (bgroup)
 224         {
 225                 key_type |= NL80211_KEYTYPE_GROUP;
 226         }
 227         else
 228         {
 229                 key_type |= NL80211_KEYTYPE_PAIRWISE;
 230         }
 231
 232         cfg80211_michael_mic_failure(padapter->pnetdev, (u8 *)&pmlmepriv->assoc_bssid[ 0 ], key_type, -1,
 233                 NULL, GFP_ATOMIC);
 234
 235         memset(&ev, 0x00, sizeof(ev));
 236         if (bgroup)
 237         {
 238             ev.flags |= IW_MICFAILURE_GROUP;
 239         }
 240         else
 241         {
 242             ev.flags |= IW_MICFAILURE_PAIRWISE;
 243         }
 244
 245         ev.src_addr.sa_family = ARPHRD_ETHER;
 246         memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[ 0 ], ETH_ALEN);
 247
 248         memset(&wrqu, 0x00, sizeof(wrqu));
 249         wrqu.data.length = sizeof(ev);
 250 }
 251
 252 #ifdef CONFIG_AUTO_AP_MODE
 253 static void rtw_os_ksocket_send(struct adapter *padapter, union recv_frame *precv_frame)
 254 {
 255         _pkt *skb = precv_frame->u.hdr.pkt;
 256         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
 257         struct sta_info *psta = precv_frame->u.hdr.psta;
 258
 259         DBG_871X("eth rx: got eth_type = 0x%x\n", pattrib->eth_type);
 260
 261         if (psta && psta->isrc && psta->pid>0)
 262         {
 263                 u16 rx_pid;
 264
 265                 rx_pid = *(u16*)(skb->data+ETH_HLEN);
 266
 267                 DBG_871X("eth rx(pid = 0x%x): sta("MAC_FMT") pid = 0x%x\n",
 268                         rx_pid, MAC_ARG(psta->hwaddr), psta->pid);
 269
 270                 if (rx_pid == psta->pid)
 271                 {
 272                         int i;
 273                         u16 len = *(u16*)(skb->data+ETH_HLEN+2);
 274                         /* u16 ctrl_type = *(u16*)(skb->data+ETH_HLEN+4); */
 275
 276                         /* DBG_871X("eth, RC: len = 0x%x, ctrl_type = 0x%x\n", len, ctrl_type); */
 277                         DBG_871X("eth, RC: len = 0x%x\n", len);
 278
 279                         for (i = 0;i<len;i++)
 280                                 DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+4+i));
 281                                 /* DBG_871X("0x%x\n", *(skb->data+ETH_HLEN+6+i)); */
 282
 283                         DBG_871X("eth, RC-end\n");
 284                 }
 285
 286         }
 287
 288 }
 289 #endif /* CONFIG_AUTO_AP_MODE */
 290
 291 int rtw_recv_indicatepkt(struct adapter *padapter, union recv_frame *precv_frame)
 292 {
 293         struct recv_priv *precvpriv;
 294         struct __queue  *pfree_recv_queue;
 295         _pkt *skb;
 296         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
 297
 298         DBG_COUNTER(padapter->rx_logs.os_indicate);
 299
 300         precvpriv = &(padapter->recvpriv);
 301         pfree_recv_queue = &(precvpriv->free_recv_queue);
 302
 303         skb = precv_frame->u.hdr.pkt;
 304         if (skb == NULL)
 305         {
 306                 RT_TRACE(_module_recv_osdep_c_, _drv_err_, ("rtw_recv_indicatepkt():skb == NULL something wrong!!!!\n"));
 307                 goto _recv_indicatepkt_drop;
 308         }
 309
 310         RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("rtw_recv_indicatepkt():skb != NULL !!!\n"));
 311         RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("rtw_recv_indicatepkt():precv_frame->u.hdr.rx_head =%p  precv_frame->hdr.rx_data =%p\n", precv_frame->u.hdr.rx_head, precv_frame->u.hdr.rx_data));
 312         RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("precv_frame->hdr.rx_tail =%p precv_frame->u.hdr.rx_end =%p precv_frame->hdr.len =%d\n", precv_frame->u.hdr.rx_tail, precv_frame->u.hdr.rx_end, precv_frame->u.hdr.len));
 313
 314         skb->data = precv_frame->u.hdr.rx_data;
 315
 316         skb_set_tail_pointer(skb, precv_frame->u.hdr.len);
 317
 318         skb->len = precv_frame->u.hdr.len;
 319
 320         RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("\n skb->head =%p skb->data =%p skb->tail =%p skb->end =%p skb->len =%d\n", skb->head, skb->data, skb_tail_pointer(skb), skb_end_pointer(skb), skb->len));
 321
 322 #ifdef CONFIG_AUTO_AP_MODE
 323         if (0x8899 == pattrib->eth_type)
 324         {
 325                 rtw_os_ksocket_send(padapter, precv_frame);
 326
 327                 /* goto _recv_indicatepkt_drop; */
 328         }
 329 #endif /* CONFIG_AUTO_AP_MODE */
 330
 331         rtw_os_recv_indicate_pkt(padapter, skb, pattrib);
 332
 333         precv_frame->u.hdr.pkt = NULL; /*  pointers to NULL before rtw_free_recvframe() */
 334
 335         rtw_free_recvframe(precv_frame, pfree_recv_queue);
 336
 337         RT_TRACE(_module_recv_osdep_c_, _drv_info_, ("\n rtw_recv_indicatepkt :after rtw_os_recv_indicate_pkt!!!!\n"));
 338
 339         return _SUCCESS;
 340
 341 _recv_indicatepkt_drop:
 342
 343          /* enqueue back to free_recv_queue */
 344          rtw_free_recvframe(precv_frame, pfree_recv_queue);
 345
 346          DBG_COUNTER(padapter->rx_logs.os_indicate_err);
 347          return _FAIL;
 348 }
 349
 350 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
 351 {
 352         timer_setup(&preorder_ctrl->reordering_ctrl_timer,
 353                     rtw_reordering_ctrl_timeout_handler, 0);
 354
 355 }