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