diff options
Diffstat (limited to 'drivers/staging/rtl8723bs/os_dep/recv_linux.c')
| -rw-r--r-- | drivers/staging/rtl8723bs/os_dep/recv_linux.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/drivers/staging/rtl8723bs/os_dep/recv_linux.c b/drivers/staging/rtl8723bs/os_dep/recv_linux.c new file mode 100644 index 000000000..88a69c7ca --- /dev/null +++ b/drivers/staging/rtl8723bs/os_dep/recv_linux.c @@ -0,0 +1,229 @@ +// SPDX-License-Identifier: GPL-2.0 +/****************************************************************************** + * + * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved. + * + ******************************************************************************/ +#include <drv_types.h> +#include <rtw_debug.h> +#include <linux/jiffies.h> +#include <net/cfg80211.h> +#include <asm/unaligned.h> + +void rtw_os_free_recvframe(union recv_frame *precvframe) +{ + if (precvframe->u.hdr.pkt) { + dev_kfree_skb_any(precvframe->u.hdr.pkt);/* free skb by driver */ + + precvframe->u.hdr.pkt = NULL; + } +} + +/* alloc os related resource in union recv_frame */ +void rtw_os_recv_resource_alloc(struct adapter *padapter, union recv_frame *precvframe) +{ + precvframe->u.hdr.pkt_newalloc = precvframe->u.hdr.pkt = NULL; +} + +/* free os related resource in union recv_frame */ +void rtw_os_recv_resource_free(struct recv_priv *precvpriv) +{ + signed int i; + union recv_frame *precvframe; + + precvframe = (union recv_frame *) precvpriv->precv_frame_buf; + + for (i = 0; i < NR_RECVFRAME; i++) { + if (precvframe->u.hdr.pkt) { + /* free skb by driver */ + dev_kfree_skb_any(precvframe->u.hdr.pkt); + precvframe->u.hdr.pkt = NULL; + } + precvframe++; + } +} + +/* free os related resource in struct recv_buf */ +void rtw_os_recvbuf_resource_free(struct adapter *padapter, struct recv_buf *precvbuf) +{ + if (precvbuf->pskb) { + dev_kfree_skb_any(precvbuf->pskb); + } +} + +struct sk_buff *rtw_os_alloc_msdu_pkt(union recv_frame *prframe, u16 nSubframe_Length, u8 *pdata) +{ + u16 eth_type; + struct sk_buff *sub_skb; + struct rx_pkt_attrib *pattrib; + + pattrib = &prframe->u.hdr.attrib; + + sub_skb = rtw_skb_alloc(nSubframe_Length + 12); + if (!sub_skb) + return NULL; + + skb_reserve(sub_skb, 12); + skb_put_data(sub_skb, (pdata + ETH_HLEN), nSubframe_Length); + + eth_type = get_unaligned_be16(&sub_skb->data[6]); + + if (sub_skb->len >= 8 && + ((!memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) && + eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || + !memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE))) { + /* + * remove RFC1042 or Bridge-Tunnel encapsulation and replace + * EtherType + */ + skb_pull(sub_skb, SNAP_SIZE); + memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN); + memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN); + } else { + __be16 len; + /* Leave Ethernet header part of hdr and full payload */ + len = htons(sub_skb->len); + memcpy(skb_push(sub_skb, 2), &len, 2); + memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src, ETH_ALEN); + memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst, ETH_ALEN); + } + + return sub_skb; +} + +void rtw_os_recv_indicate_pkt(struct adapter *padapter, struct sk_buff *pkt, struct rx_pkt_attrib *pattrib) +{ + struct mlme_priv *pmlmepriv = &padapter->mlmepriv; + + /* Indicate the packets to upper layer */ + if (pkt) { + if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { + struct sk_buff *pskb2 = NULL; + struct sta_info *psta = NULL; + struct sta_priv *pstapriv = &padapter->stapriv; + int bmcast = IS_MCAST(pattrib->dst); + + if (memcmp(pattrib->dst, myid(&padapter->eeprompriv), ETH_ALEN)) { + if (bmcast) { + psta = rtw_get_bcmc_stainfo(padapter); + pskb2 = skb_clone(pkt, GFP_ATOMIC); + } else { + psta = rtw_get_stainfo(pstapriv, pattrib->dst); + } + + if (psta) { + struct net_device *pnetdev = (struct net_device *)padapter->pnetdev; + /* skb->ip_summed = CHECKSUM_NONE; */ + pkt->dev = pnetdev; + skb_set_queue_mapping(pkt, rtw_recv_select_queue(pkt)); + + _rtw_xmit_entry(pkt, pnetdev); + + if (bmcast && pskb2) + pkt = pskb2; + else + return; + } + } else { + /* to APself */ + } + } + + pkt->protocol = eth_type_trans(pkt, padapter->pnetdev); + pkt->dev = padapter->pnetdev; + + pkt->ip_summed = CHECKSUM_NONE; + + rtw_netif_rx(padapter->pnetdev, pkt); + } +} + +void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup) +{ + enum nl80211_key_type key_type = 0; + union iwreq_data wrqu; + struct iw_michaelmicfailure ev; + struct mlme_priv *pmlmepriv = &padapter->mlmepriv; + struct security_priv *psecuritypriv = &padapter->securitypriv; + unsigned long cur_time = 0; + + if (psecuritypriv->last_mic_err_time == 0) { + psecuritypriv->last_mic_err_time = jiffies; + } else { + cur_time = jiffies; + + if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ) { + psecuritypriv->btkip_countermeasure = true; + psecuritypriv->last_mic_err_time = 0; + psecuritypriv->btkip_countermeasure_time = cur_time; + } else { + psecuritypriv->last_mic_err_time = jiffies; + } + } + + if (bgroup) { + key_type |= NL80211_KEYTYPE_GROUP; + } else { + key_type |= NL80211_KEYTYPE_PAIRWISE; + } + + cfg80211_michael_mic_failure(padapter->pnetdev, (u8 *)&pmlmepriv->assoc_bssid[0], key_type, -1, + NULL, GFP_ATOMIC); + + memset(&ev, 0x00, sizeof(ev)); + if (bgroup) { + ev.flags |= IW_MICFAILURE_GROUP; + } else { + ev.flags |= IW_MICFAILURE_PAIRWISE; + } + + ev.src_addr.sa_family = ARPHRD_ETHER; + memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN); + + memset(&wrqu, 0x00, sizeof(wrqu)); + wrqu.data.length = sizeof(ev); +} + +int rtw_recv_indicatepkt(struct adapter *padapter, union recv_frame *precv_frame) +{ + struct recv_priv *precvpriv; + struct __queue *pfree_recv_queue; + struct sk_buff *skb; + struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; + + precvpriv = &(padapter->recvpriv); + pfree_recv_queue = &(precvpriv->free_recv_queue); + + skb = precv_frame->u.hdr.pkt; + if (!skb) + goto _recv_indicatepkt_drop; + + skb->data = precv_frame->u.hdr.rx_data; + + skb_set_tail_pointer(skb, precv_frame->u.hdr.len); + + skb->len = precv_frame->u.hdr.len; + + rtw_os_recv_indicate_pkt(padapter, skb, pattrib); + + /* pointers to NULL before rtw_free_recvframe() */ + precv_frame->u.hdr.pkt = NULL; + + rtw_free_recvframe(precv_frame, pfree_recv_queue); + + return _SUCCESS; + +_recv_indicatepkt_drop: + + /* enqueue back to free_recv_queue */ + rtw_free_recvframe(precv_frame, pfree_recv_queue); + + return _FAIL; +} + +void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl) +{ + timer_setup(&preorder_ctrl->reordering_ctrl_timer, + rtw_reordering_ctrl_timeout_handler, 0); + +} |