LXR linux/drivers/staging/rtl8723bs/os_dep/recv

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