/****************************************************************************** * * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * ******************************************************************************/ #define _RTW_RECV_C_ #include #include #include #include #include #include #include #include #include #include #include void rtw_signal_stat_timer_hdl23a(unsigned long data); void _rtw_init_sta_recv_priv23a(struct sta_recv_priv *psta_recvpriv) { spin_lock_init(&psta_recvpriv->lock); /* for (i = 0; iblk_strms[i]); */ _rtw_init_queue23a(&psta_recvpriv->defrag_q); } int _rtw_init_recv_priv23a(struct recv_priv *precvpriv, struct rtw_adapter *padapter) { struct recv_frame *precvframe; int i; int res = _SUCCESS; spin_lock_init(&precvpriv->lock); _rtw_init_queue23a(&precvpriv->free_recv_queue); _rtw_init_queue23a(&precvpriv->recv_pending_queue); _rtw_init_queue23a(&precvpriv->uc_swdec_pending_queue); precvpriv->adapter = padapter; for (i = 0; i < NR_RECVFRAME ; i++) { precvframe = kzalloc(sizeof(struct recv_frame), GFP_KERNEL); if (!precvframe) break; INIT_LIST_HEAD(&precvframe->list); list_add_tail(&precvframe->list, &precvpriv->free_recv_queue.queue); precvframe->adapter = padapter; precvframe++; } precvpriv->free_recvframe_cnt = i; precvpriv->rx_pending_cnt = 1; res = rtl8723au_init_recv_priv(padapter); setup_timer(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl23a, (unsigned long)padapter); precvpriv->signal_stat_sampling_interval = 1000; /* ms */ rtw_set_signal_stat_timer(precvpriv); return res; } void _rtw_free_recv_priv23a (struct recv_priv *precvpriv) { struct rtw_adapter *padapter = precvpriv->adapter; struct recv_frame *precvframe; struct list_head *plist, *ptmp; rtw_free_uc_swdec_pending_queue23a(padapter); list_for_each_safe(plist, ptmp, &precvpriv->free_recv_queue.queue) { precvframe = container_of(plist, struct recv_frame, list); list_del_init(&precvframe->list); kfree(precvframe); } rtl8723au_free_recv_priv(padapter); } struct recv_frame *rtw_alloc_recvframe23a(struct rtw_queue *pfree_recv_queue) { struct recv_frame *pframe; struct list_head *plist, *phead; struct rtw_adapter *padapter; struct recv_priv *precvpriv; spin_lock_bh(&pfree_recv_queue->lock); if (list_empty(&pfree_recv_queue->queue)) pframe = NULL; else { phead = get_list_head(pfree_recv_queue); plist = phead->next; pframe = container_of(plist, struct recv_frame, list); list_del_init(&pframe->list); padapter = pframe->adapter; if (padapter) { precvpriv = &padapter->recvpriv; if (pfree_recv_queue == &precvpriv->free_recv_queue) precvpriv->free_recvframe_cnt--; } } spin_unlock_bh(&pfree_recv_queue->lock); return pframe; } int rtw_free_recvframe23a(struct recv_frame *precvframe) { struct rtw_adapter *padapter = precvframe->adapter; struct recv_priv *precvpriv = &padapter->recvpriv; struct rtw_queue *pfree_recv_queue; if (precvframe->pkt) { dev_kfree_skb_any(precvframe->pkt);/* free skb by driver */ precvframe->pkt = NULL; } pfree_recv_queue = &precvpriv->free_recv_queue; spin_lock_bh(&pfree_recv_queue->lock); list_del_init(&precvframe->list); list_add_tail(&precvframe->list, get_list_head(pfree_recv_queue)); if (padapter) { if (pfree_recv_queue == &precvpriv->free_recv_queue) precvpriv->free_recvframe_cnt++; } spin_unlock_bh(&pfree_recv_queue->lock); return _SUCCESS; } int rtw_enqueue_recvframe23a(struct recv_frame *precvframe, struct rtw_queue *queue) { struct rtw_adapter *padapter = precvframe->adapter; struct recv_priv *precvpriv = &padapter->recvpriv; spin_lock_bh(&queue->lock); list_del_init(&precvframe->list); list_add_tail(&precvframe->list, get_list_head(queue)); if (padapter) { if (queue == &precvpriv->free_recv_queue) precvpriv->free_recvframe_cnt++; } spin_unlock_bh(&queue->lock); return _SUCCESS; } /* caller : defrag ; recvframe_chk_defrag23a in recv_thread (passive) pframequeue: defrag_queue : will be accessed in recv_thread (passive) using spinlock to protect */ static void rtw_free_recvframe23a_queue(struct rtw_queue *pframequeue) { struct recv_frame *hdr; struct list_head *plist, *phead, *ptmp; spin_lock(&pframequeue->lock); phead = get_list_head(pframequeue); plist = phead->next; list_for_each_safe(plist, ptmp, phead) { hdr = container_of(plist, struct recv_frame, list); rtw_free_recvframe23a(hdr); } spin_unlock(&pframequeue->lock); } u32 rtw_free_uc_swdec_pending_queue23a(struct rtw_adapter *adapter) { u32 cnt = 0; struct recv_frame *pending_frame; while ((pending_frame = rtw_alloc_recvframe23a(&adapter->recvpriv.uc_swdec_pending_queue))) { rtw_free_recvframe23a(pending_frame); DBG_8723A("%s: dequeue uc_swdec_pending_queue\n", __func__); cnt++; } return cnt; } int rtw_enqueue_recvbuf23a_to_head(struct recv_buf *precvbuf, struct rtw_queue *queue) { spin_lock_bh(&queue->lock); list_del_init(&precvbuf->list); list_add(&precvbuf->list, get_list_head(queue)); spin_unlock_bh(&queue->lock); return _SUCCESS; } int rtw_enqueue_recvbuf23a(struct recv_buf *precvbuf, struct rtw_queue *queue) { unsigned long irqL; spin_lock_irqsave(&queue->lock, irqL); list_del_init(&precvbuf->list); list_add_tail(&precvbuf->list, get_list_head(queue)); spin_unlock_irqrestore(&queue->lock, irqL); return _SUCCESS; } struct recv_buf *rtw_dequeue_recvbuf23a (struct rtw_queue *queue) { unsigned long irqL; struct recv_buf *precvbuf; struct list_head *plist, *phead; spin_lock_irqsave(&queue->lock, irqL); if (list_empty(&queue->queue)) { precvbuf = NULL; } else { phead = get_list_head(queue); plist = phead->next; precvbuf = container_of(plist, struct recv_buf, list); list_del_init(&precvbuf->list); } spin_unlock_irqrestore(&queue->lock, irqL); return precvbuf; } int recvframe_chkmic(struct rtw_adapter *adapter, struct recv_frame *precvframe); int recvframe_chkmic(struct rtw_adapter *adapter, struct recv_frame *precvframe) { int i, res = _SUCCESS; u32 datalen; u8 miccode[8]; u8 bmic_err = false, brpt_micerror = true; u8 *pframe, *payload, *pframemic; u8 *mickey; /* u8 *iv, rxdata_key_idx = 0; */ struct sta_info *stainfo; struct rx_pkt_attrib *prxattrib = &precvframe->attrib; struct security_priv *psecuritypriv = &adapter->securitypriv; struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv; struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info; stainfo = rtw_get_stainfo23a(&adapter->stapriv, &prxattrib->ta[0]); if (prxattrib->encrypt == WLAN_CIPHER_SUITE_TKIP) { RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "recvframe_chkmic:prxattrib->encrypt == WLAN_CIPHER_SUITE_TKIP\n"); RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "recvframe_chkmic:da = %pM\n", prxattrib->ra); /* calculate mic code */ if (stainfo != NULL) { if (is_multicast_ether_addr(prxattrib->ra)) { mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0]; RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "recvframe_chkmic: bcmc key\n"); if (!psecuritypriv->binstallGrpkey) { res = _FAIL; RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "recvframe_chkmic:didn't install group key!\n"); DBG_8723A("\n recvframe_chkmic:didn't " "install group key!!!!!!\n"); goto exit; } } else { mickey = &stainfo->dot11tkiprxmickey.skey[0]; RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "recvframe_chkmic: unicast key\n"); } /* icv_len included the mic code */ datalen = precvframe->pkt->len-prxattrib-> hdrlen-prxattrib->iv_len-prxattrib->icv_len - 8; pframe = precvframe->pkt->data; payload = pframe + prxattrib->hdrlen + prxattrib->iv_len; RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "prxattrib->iv_len =%d prxattrib->icv_len =%d\n", prxattrib->iv_len, prxattrib->icv_len); /* care the length of the data */ rtw_seccalctkipmic23a(mickey, pframe, payload, datalen, &miccode[0], (unsigned char)prxattrib->priority); pframemic = payload + datalen; bmic_err = false; for (i = 0; i < 8; i++) { if (miccode[i] != *(pframemic + i)) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "recvframe_chkmic:miccode[%d](%02x) != *(pframemic+%d)(%02x)\n", i, miccode[i], i, *(pframemic + i)); bmic_err = true; } } if (bmic_err == true) { int i; RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "*(pframemic-8)-*(pframemic-1) =0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n", *(pframemic - 8), *(pframemic - 7), *(pframemic - 6), *(pframemic - 5), *(pframemic - 4), *(pframemic - 3), *(pframemic - 2), *(pframemic - 1)); RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "*(pframemic-16)-*(pframemic-9) =0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n", *(pframemic - 16), *(pframemic - 15), *(pframemic - 14), *(pframemic - 13), *(pframemic - 12), *(pframemic - 11), *(pframemic - 10), *(pframemic - 9)); RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "====== demp packet (len =%d) ======\n", precvframe->pkt->len); for (i = 0; i < precvframe->pkt->len; i = i + 8) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n", *(precvframe->pkt->data+i), *(precvframe->pkt->data+i+1), *(precvframe->pkt->data+i+2), *(precvframe->pkt->data+i+3), *(precvframe->pkt->data+i+4), *(precvframe->pkt->data+i+5), *(precvframe->pkt->data+i+6), *(precvframe->pkt->data+i+7)); } RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "====== demp packet end [len =%d]======\n", precvframe->pkt->len); RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "hrdlen =%d\n", prxattrib->hdrlen); RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "ra = %pM psecuritypriv->binstallGrpkey =%d\n", prxattrib->ra, psecuritypriv->binstallGrpkey); /* double check key_index for some timing issue, cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */ if ((is_multicast_ether_addr(prxattrib->ra)) && (prxattrib->key_index != pmlmeinfo->key_index)) brpt_micerror = false; if ((prxattrib->bdecrypted == true) && (brpt_micerror == true)) { rtw_handle_tkip_mic_err23a(adapter, (u8)is_multicast_ether_addr(prxattrib->ra)); RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "mic error :prxattrib->bdecrypted =%d\n", prxattrib->bdecrypted); DBG_8723A(" mic error :prxattrib->" "bdecrypted =%d\n", prxattrib->bdecrypted); } else { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "mic error :prxattrib->bdecrypted =%d\n", prxattrib->bdecrypted); DBG_8723A(" mic error :prxattrib->" "bdecrypted =%d\n", prxattrib->bdecrypted); } res = _FAIL; } else { /* mic checked ok */ if (!psecuritypriv->bcheck_grpkey && is_multicast_ether_addr(prxattrib->ra)) { psecuritypriv->bcheck_grpkey = 1; RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "psecuritypriv->bcheck_grpkey = true\n"); } } } else { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "recvframe_chkmic: rtw_get_stainfo23a ==NULL!!!\n"); } skb_trim(precvframe->pkt, precvframe->pkt->len - 8); } exit: return res; } /* decrypt and set the ivlen, icvlen of the recv_frame */ struct recv_frame *decryptor(struct rtw_adapter *padapter, struct recv_frame *precv_frame); struct recv_frame *decryptor(struct rtw_adapter *padapter, struct recv_frame *precv_frame) { struct rx_pkt_attrib *prxattrib = &precv_frame->attrib; struct security_priv *psecuritypriv = &padapter->securitypriv; struct recv_frame *return_packet = precv_frame; int res = _SUCCESS; RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "prxstat->decrypted =%x prxattrib->encrypt = 0x%03x\n", prxattrib->bdecrypted, prxattrib->encrypt); if (prxattrib->encrypt > 0) { u8 *iv = precv_frame->pkt->data + prxattrib->hdrlen; prxattrib->key_index = (((iv[3]) >> 6) & 0x3); if (prxattrib->key_index > WEP_KEYS) { DBG_8723A("prxattrib->key_index(%d) > WEP_KEYS\n", prxattrib->key_index); switch (prxattrib->encrypt) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex; break; case WLAN_CIPHER_SUITE_TKIP: case WLAN_CIPHER_SUITE_CCMP: default: prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid; break; } } } if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0))) { psecuritypriv->hw_decrypted = 0; switch (prxattrib->encrypt) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: rtw_wep_decrypt23a(padapter, precv_frame); break; case WLAN_CIPHER_SUITE_TKIP: res = rtw_tkip_decrypt23a(padapter, precv_frame); break; case WLAN_CIPHER_SUITE_CCMP: res = rtw_aes_decrypt23a(padapter, precv_frame); break; default: break; } } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 && (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != WLAN_CIPHER_SUITE_TKIP)) { psecuritypriv->hw_decrypted = 1; } if (res == _FAIL) { rtw_free_recvframe23a(return_packet); return_packet = NULL; } return return_packet; } /* set the security information in the recv_frame */ static struct recv_frame *portctrl(struct rtw_adapter *adapter, struct recv_frame *precv_frame) { u8 *psta_addr, *ptr; uint auth_alg; struct recv_frame *pfhdr; struct sta_info *psta; struct sta_priv *pstapriv ; struct recv_frame *prtnframe; u16 ether_type; u16 eapol_type = ETH_P_PAE;/* for Funia BD's WPA issue */ struct rx_pkt_attrib *pattrib; pstapriv = &adapter->stapriv; auth_alg = adapter->securitypriv.dot11AuthAlgrthm; pfhdr = precv_frame; pattrib = &pfhdr->attrib; psta_addr = pattrib->ta; psta = rtw_get_stainfo23a(pstapriv, psta_addr); RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "########portctrl:adapter->securitypriv.dot11AuthAlgrthm =%d\n", adapter->securitypriv.dot11AuthAlgrthm); prtnframe = precv_frame; if (auth_alg == dot11AuthAlgrthm_8021X) { /* get ether_type */ ptr = pfhdr->pkt->data + pfhdr->attrib.hdrlen; ether_type = (ptr[6] << 8) | ptr[7]; if (psta && psta->ieee8021x_blocked) { /* blocked */ /* only accept EAPOL frame */ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "########portctrl:psta->ieee8021x_blocked ==1\n"); if (ether_type != eapol_type) { /* free this frame */ rtw_free_recvframe23a(precv_frame); prtnframe = NULL; } } } return prtnframe; } int recv_decache(struct recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache); int recv_decache(struct recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache) { int tid = precv_frame->attrib.priority; u16 seq_ctrl = ((precv_frame->attrib.seq_num & 0xffff) << 4) | (precv_frame->attrib.frag_num & 0xf); if (tid > 15) { RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, "recv_decache, (tid>15)! seq_ctrl = 0x%x, tid = 0x%x\n", seq_ctrl, tid); return _FAIL; } if (1) { /* if (bretry) */ if (seq_ctrl == prxcache->tid_rxseq[tid]) { RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, "recv_decache, seq_ctrl = 0x%x, tid = 0x%x, tid_rxseq = 0x%x\n", seq_ctrl, tid, prxcache->tid_rxseq[tid]); return _FAIL; } } prxcache->tid_rxseq[tid] = seq_ctrl; return _SUCCESS; } void process23a_pwrbit_data(struct rtw_adapter *padapter, struct recv_frame *precv_frame); void process23a_pwrbit_data(struct rtw_adapter *padapter, struct recv_frame *precv_frame) { #ifdef CONFIG_8723AU_AP_MODE unsigned char pwrbit; struct sk_buff *skb = precv_frame->pkt; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct rx_pkt_attrib *pattrib = &precv_frame->attrib; struct sta_priv *pstapriv = &padapter->stapriv; struct sta_info *psta = NULL; psta = rtw_get_stainfo23a(pstapriv, pattrib->src); if (psta) { pwrbit = ieee80211_has_pm(hdr->frame_control); if (pwrbit) { if (!(psta->state & WIFI_SLEEP_STATE)) stop_sta_xmit23a(padapter, psta); } else { if (psta->state & WIFI_SLEEP_STATE) wakeup_sta_to_xmit23a(padapter, psta); } } #endif } void process_wmmps_data(struct rtw_adapter *padapter, struct recv_frame *precv_frame); void process_wmmps_data(struct rtw_adapter *padapter, struct recv_frame *precv_frame) { #ifdef CONFIG_8723AU_AP_MODE struct rx_pkt_attrib *pattrib = &precv_frame->attrib; struct sta_priv *pstapriv = &padapter->stapriv; struct sta_info *psta = NULL; psta = rtw_get_stainfo23a(pstapriv, pattrib->src); if (!psta) return; if (!psta->qos_option) return; if (!(psta->qos_info & 0xf)) return; if (psta->state & WIFI_SLEEP_STATE) { u8 wmmps_ac = 0; switch (pattrib->priority) { case 1: case 2: wmmps_ac = psta->uapsd_bk & BIT(1); break; case 4: case 5: wmmps_ac = psta->uapsd_vi & BIT(1); break; case 6: case 7: wmmps_ac = psta->uapsd_vo & BIT(1); break; case 0: case 3: default: wmmps_ac = psta->uapsd_be & BIT(1); break; } if (wmmps_ac) { if (psta->sleepq_ac_len > 0) { /* process received triggered frame */ xmit_delivery_enabled_frames23a(padapter, psta); } else { /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */ issue_qos_nulldata23a(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0); } } } #endif } static void count_rx_stats(struct rtw_adapter *padapter, struct recv_frame *prframe, struct sta_info *sta) { int sz; struct sta_info *psta = NULL; struct stainfo_stats *pstats = NULL; struct rx_pkt_attrib *pattrib = & prframe->attrib; struct recv_priv *precvpriv = &padapter->recvpriv; sz = prframe->pkt->len; precvpriv->rx_bytes += sz; padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++; if ((!is_broadcast_ether_addr(pattrib->dst)) && (!is_multicast_ether_addr(pattrib->dst))) padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++; if (sta) psta = sta; else psta = prframe->psta; if (psta) { pstats = &psta->sta_stats; pstats->rx_data_pkts++; pstats->rx_bytes += sz; } } static int sta2sta_data_frame(struct rtw_adapter *adapter, struct recv_frame *precv_frame, struct sta_info**psta) { struct sk_buff *skb = precv_frame->pkt; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; int ret = _SUCCESS; struct rx_pkt_attrib *pattrib = & precv_frame->attrib; struct sta_priv *pstapriv = &adapter->stapriv; struct mlme_priv *pmlmepriv = &adapter->mlmepriv; u8 *mybssid = get_bssid(pmlmepriv); u8 *myhwaddr = myid(&adapter->eeprompriv); u8 *sta_addr = NULL; int bmcast = is_multicast_ether_addr(pattrib->dst); if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) || check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) { /* filter packets that SA is myself or multicast or broadcast */ if (ether_addr_equal(myhwaddr, pattrib->src)) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "SA == myself\n"); ret = _FAIL; goto exit; } if (!ether_addr_equal(myhwaddr, pattrib->dst) && !bmcast) { ret = _FAIL; goto exit; } if (ether_addr_equal(pattrib->bssid, "\x0\x0\x0\x0\x0\x0") || ether_addr_equal(mybssid, "\x0\x0\x0\x0\x0\x0") || !ether_addr_equal(pattrib->bssid, mybssid)) { ret = _FAIL; goto exit; } sta_addr = pattrib->src; } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) { /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */ if (!ether_addr_equal(pattrib->bssid, pattrib->src)) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "bssid != TA under STATION_MODE; drop pkt\n"); ret = _FAIL; goto exit; } sta_addr = pattrib->bssid; } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) { if (bmcast) { /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */ if (!is_multicast_ether_addr(pattrib->bssid)) { ret = _FAIL; goto exit; } } else { /* not mc-frame */ /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */ if (!ether_addr_equal(pattrib->bssid, pattrib->dst)) { ret = _FAIL; goto exit; } sta_addr = pattrib->src; } } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { ether_addr_copy(pattrib->dst, hdr->addr1); ether_addr_copy(pattrib->src, hdr->addr2); ether_addr_copy(pattrib->bssid, hdr->addr3); ether_addr_copy(pattrib->ra, pattrib->dst); ether_addr_copy(pattrib->ta, pattrib->src); sta_addr = mybssid; } else { ret = _FAIL; } if (bmcast) *psta = rtw_get_bcmc_stainfo23a(adapter); else *psta = rtw_get_stainfo23a(pstapriv, sta_addr); /* get ap_info */ if (*psta == NULL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "can't get psta under sta2sta_data_frame ; drop pkt\n"); ret = _FAIL; goto exit; } exit: return ret; } int ap2sta_data_frame(struct rtw_adapter *adapter, struct recv_frame *precv_frame, struct sta_info **psta); int ap2sta_data_frame(struct rtw_adapter *adapter, struct recv_frame *precv_frame, struct sta_info **psta) { struct sk_buff *skb = precv_frame->pkt; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct rx_pkt_attrib *pattrib = & precv_frame->attrib; int ret = _SUCCESS; struct sta_priv *pstapriv = &adapter->stapriv; struct mlme_priv *pmlmepriv = &adapter->mlmepriv; u8 *mybssid = get_bssid(pmlmepriv); u8 *myhwaddr = myid(&adapter->eeprompriv); int bmcast = is_multicast_ether_addr(pattrib->dst); if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && (check_fwstate(pmlmepriv, _FW_LINKED) || check_fwstate(pmlmepriv, _FW_UNDER_LINKING))) { /* filter packets that SA is myself or multicast or broadcast */ if (ether_addr_equal(myhwaddr, pattrib->src)) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "SA == myself\n"); ret = _FAIL; goto exit; } /* da should be for me */ if (!ether_addr_equal(myhwaddr, pattrib->dst) && !bmcast) { RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "ap2sta_data_frame: compare DA failed; DA=%pM\n", pattrib->dst); ret = _FAIL; goto exit; } /* check BSSID */ if (ether_addr_equal(pattrib->bssid, "\x0\x0\x0\x0\x0\x0") || ether_addr_equal(mybssid, "\x0\x0\x0\x0\x0\x0") || !ether_addr_equal(pattrib->bssid, mybssid)) { RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "ap2sta_data_frame: compare BSSID failed; BSSID=%pM\n", pattrib->bssid); RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "mybssid=%pM\n", mybssid); if (!bmcast) { DBG_8723A("issue_deauth23a to the nonassociated ap=%pM for the reason(7)\n", pattrib->bssid); issue_deauth23a(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); } ret = _FAIL; goto exit; } if (bmcast) *psta = rtw_get_bcmc_stainfo23a(adapter); else /* get ap_info */ *psta = rtw_get_stainfo23a(pstapriv, pattrib->bssid); if (*psta == NULL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "ap2sta: can't get psta under STATION_MODE; drop pkt\n"); ret = _FAIL; goto exit; } if (ieee80211_is_nullfunc(hdr->frame_control)) { /* No data, will not indicate to upper layer, temporily count it here */ count_rx_stats(adapter, precv_frame, *psta); ret = RTW_RX_HANDLED; goto exit; } } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) && check_fwstate(pmlmepriv, _FW_LINKED)) { ether_addr_copy(pattrib->dst, hdr->addr1); ether_addr_copy(pattrib->src, hdr->addr2); ether_addr_copy(pattrib->bssid, hdr->addr3); ether_addr_copy(pattrib->ra, pattrib->dst); ether_addr_copy(pattrib->ta, pattrib->src); /* */ ether_addr_copy(pattrib->bssid, mybssid); /* get sta_info */ *psta = rtw_get_stainfo23a(pstapriv, pattrib->bssid); if (*psta == NULL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "can't get psta under MP_MODE ; drop pkt\n"); ret = _FAIL; goto exit; } } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) { /* Special case */ ret = RTW_RX_HANDLED; goto exit; } else { if (ether_addr_equal(myhwaddr, pattrib->dst) && !bmcast) { *psta = rtw_get_stainfo23a(pstapriv, pattrib->bssid); if (*psta == NULL) { DBG_8723A("issue_deauth23a to the ap=%pM for the reason(7)\n", pattrib->bssid); issue_deauth23a(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); } } ret = _FAIL; } exit: return ret; } int sta2ap_data_frame(struct rtw_adapter *adapter, struct recv_frame *precv_frame, struct sta_info **psta); int sta2ap_data_frame(struct rtw_adapter *adapter, struct recv_frame *precv_frame, struct sta_info **psta) { struct sk_buff *skb = precv_frame->pkt; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct rx_pkt_attrib *pattrib = & precv_frame->attrib; struct sta_priv *pstapriv = &adapter->stapriv; struct mlme_priv *pmlmepriv = &adapter->mlmepriv; unsigned char *mybssid = get_bssid(pmlmepriv); int ret = _SUCCESS; if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) { /* For AP mode, RA = BSSID, TX = STA(SRC_ADDR), A3 = DST_ADDR */ if (!ether_addr_equal(pattrib->bssid, mybssid)) { ret = _FAIL; goto exit; } *psta = rtw_get_stainfo23a(pstapriv, pattrib->src); if (*psta == NULL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "can't get psta under AP_MODE; drop pkt\n"); DBG_8723A("issue_deauth23a to sta=%pM for the reason(7)\n", pattrib->src); issue_deauth23a(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); ret = RTW_RX_HANDLED; goto exit; } process23a_pwrbit_data(adapter, precv_frame); /* We only get here if it's a data frame, so no need to * confirm data frame type first */ if (ieee80211_is_data_qos(hdr->frame_control)) process_wmmps_data(adapter, precv_frame); if (ieee80211_is_nullfunc(hdr->frame_control)) { /* No data, will not indicate to upper layer, temporily count it here */ count_rx_stats(adapter, precv_frame, *psta); ret = RTW_RX_HANDLED; goto exit; } } else { u8 *myhwaddr = myid(&adapter->eeprompriv); if (!ether_addr_equal(pattrib->ra, myhwaddr)) { ret = RTW_RX_HANDLED; goto exit; } DBG_8723A("issue_deauth23a to sta=%pM for the reason(7)\n", pattrib->src); issue_deauth23a(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); ret = RTW_RX_HANDLED; goto exit; } exit: return ret; } static int validate_recv_ctrl_frame(struct rtw_adapter *padapter, struct recv_frame *precv_frame) { #ifdef CONFIG_8723AU_AP_MODE struct rx_pkt_attrib *pattrib = &precv_frame->attrib; struct sta_priv *pstapriv = &padapter->stapriv; struct sk_buff *skb = precv_frame->pkt; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; if (!ieee80211_is_ctl(hdr->frame_control)) return _FAIL; /* receive the frames that ra(a1) is my address */ if (!ether_addr_equal(hdr->addr1, myid(&padapter->eeprompriv))) return _FAIL; /* only handle ps-poll */ if (ieee80211_is_pspoll(hdr->frame_control)) { struct ieee80211_pspoll *psp = (struct ieee80211_pspoll *)hdr; u16 aid; u8 wmmps_ac = 0; struct sta_info *psta = NULL; aid = le16_to_cpu(psp->aid) & 0x3fff; psta = rtw_get_stainfo23a(pstapriv, hdr->addr2); if (!psta || psta->aid != aid) return _FAIL; /* for rx pkt statistics */ psta->sta_stats.rx_ctrl_pkts++; switch (pattrib->priority) { case 1: case 2: wmmps_ac = psta->uapsd_bk & BIT(0); break; case 4: case 5: wmmps_ac = psta->uapsd_vi & BIT(0); break; case 6: case 7: wmmps_ac = psta->uapsd_vo & BIT(0); break; case 0: case 3: default: wmmps_ac = psta->uapsd_be & BIT(0); break; } if (wmmps_ac) return _FAIL; if (psta->state & WIFI_STA_ALIVE_CHK_STATE) { DBG_8723A("%s alive check-rx ps-poll\n", __func__); psta->expire_to = pstapriv->expire_to; psta->state ^= WIFI_STA_ALIVE_CHK_STATE; } if ((psta->state & WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap & CHKBIT(psta->aid))) { struct list_head *xmitframe_plist, *xmitframe_phead; struct xmit_frame *pxmitframe; struct xmit_priv *pxmitpriv = &padapter->xmitpriv; spin_lock_bh(&pxmitpriv->lock); xmitframe_phead = get_list_head(&psta->sleep_q); xmitframe_plist = xmitframe_phead->next; if (!list_empty(xmitframe_phead)) { pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list); xmitframe_plist = xmitframe_plist->next; list_del_init(&pxmitframe->list); psta->sleepq_len--; if (psta->sleepq_len>0) pxmitframe->attrib.mdata = 1; else pxmitframe->attrib.mdata = 0; pxmitframe->attrib.triggered = 1; /* DBG_8723A("handling ps-poll, q_len =%d, tim =%x\n", psta->sleepq_len, pstapriv->tim_bitmap); */ rtl8723au_hal_xmitframe_enqueue(padapter, pxmitframe); if (psta->sleepq_len == 0) { pstapriv->tim_bitmap &= ~CHKBIT(psta->aid); /* DBG_8723A("after handling ps-poll, tim =%x\n", pstapriv->tim_bitmap); */ /* update BCN for TIM IE */ /* update_BCNTIM(padapter); */ update_beacon23a(padapter, WLAN_EID_TIM, NULL, false); } /* spin_unlock_bh(&psta->sleep_q.lock); */ spin_unlock_bh(&pxmitpriv->lock); } else { /* spin_unlock_bh(&psta->sleep_q.lock); */ spin_unlock_bh(&pxmitpriv->lock); /* DBG_8723A("no buffered packets to xmit\n"); */ if (pstapriv->tim_bitmap & CHKBIT(psta->aid)) { if (psta->sleepq_len == 0) { DBG_8723A("no buffered packets " "to xmit\n"); /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */ issue_nulldata23a(padapter, psta->hwaddr, 0, 0, 0); } else { DBG_8723A("error!psta->sleepq" "_len =%d\n", psta->sleepq_len); psta->sleepq_len = 0; } pstapriv->tim_bitmap &= ~CHKBIT(psta->aid); /* update BCN for TIM IE */ /* update_BCNTIM(padapter); */ update_beacon23a(padapter, WLAN_EID_TIM, NULL, false); } } } } #endif return _FAIL; } struct recv_frame *recvframe_chk_defrag23a(struct rtw_adapter *padapter, struct recv_frame *precv_frame); static int validate_recv_mgnt_frame(struct rtw_adapter *padapter, struct recv_frame *precv_frame) { struct sta_info *psta; struct sk_buff *skb; struct ieee80211_hdr *hdr; /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "+validate_recv_mgnt_frame\n"); precv_frame = recvframe_chk_defrag23a(padapter, precv_frame); if (precv_frame == NULL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, "%s: fragment packet\n", __func__); return _SUCCESS; } skb = precv_frame->pkt; hdr = (struct ieee80211_hdr *) skb->data; /* for rx pkt statistics */ psta = rtw_get_stainfo23a(&padapter->stapriv, hdr->addr2); if (psta) { psta->sta_stats.rx_mgnt_pkts++; if (ieee80211_is_beacon(hdr->frame_control)) psta->sta_stats.rx_beacon_pkts++; else if (ieee80211_is_probe_req(hdr->frame_control)) psta->sta_stats.rx_probereq_pkts++; else if (ieee80211_is_probe_resp(hdr->frame_control)) { if (ether_addr_equal(padapter->eeprompriv.mac_addr, hdr->addr1)) psta->sta_stats.rx_probersp_pkts++; else if (is_broadcast_ether_addr(hdr->addr1) || is_multicast_ether_addr(hdr->addr1)) psta->sta_stats.rx_probersp_bm_pkts++; else psta->sta_stats.rx_probersp_uo_pkts++; } } mgt_dispatcher23a(padapter, precv_frame); return _SUCCESS; } static int validate_recv_data_frame(struct rtw_adapter *adapter, struct recv_frame *precv_frame) { u8 bretry; u8 *psa, *pda; struct sta_info *psta = NULL; struct rx_pkt_attrib *pattrib = & precv_frame->attrib; struct security_priv *psecuritypriv = &adapter->securitypriv; int ret = _SUCCESS; struct sk_buff *skb = precv_frame->pkt; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; bretry = ieee80211_has_retry(hdr->frame_control); pda = ieee80211_get_DA(hdr); psa = ieee80211_get_SA(hdr); ether_addr_copy(pattrib->dst, pda); ether_addr_copy(pattrib->src, psa); switch (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) { case cpu_to_le16(0): ether_addr_copy(pattrib->bssid, hdr->addr3); ether_addr_copy(pattrib->ra, pda); ether_addr_copy(pattrib->ta, psa); ret = sta2sta_data_frame(adapter, precv_frame, &psta); break; case cpu_to_le16(IEEE80211_FCTL_FROMDS): ether_addr_copy(pattrib->bssid, hdr->addr2); ether_addr_copy(pattrib->ra, pda); ether_addr_copy(pattrib->ta, hdr->addr2); ret = ap2sta_data_frame(adapter, precv_frame, &psta); break; case cpu_to_le16(IEEE80211_FCTL_TODS): ether_addr_copy(pattrib->bssid, hdr->addr1); ether_addr_copy(pattrib->ra, hdr->addr1); ether_addr_copy(pattrib->ta, psa); ret = sta2ap_data_frame(adapter, precv_frame, &psta); break; case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS): /* * There is no BSSID in this case, but the driver has been * using addr1 so far, so keep it for now. */ ether_addr_copy(pattrib->bssid, hdr->addr1); ether_addr_copy(pattrib->ra, hdr->addr1); ether_addr_copy(pattrib->ta, hdr->addr2); ret = _FAIL; RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "case 3\n"); break; } if ((ret == _FAIL) || (ret == RTW_RX_HANDLED)) goto exit; if (!psta) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "after to_fr_ds_chk; psta == NULL\n"); ret = _FAIL; goto exit; } /* psta->rssi = prxcmd->rssi; */ /* psta->signal_quality = prxcmd->sq; */ precv_frame->psta = psta; pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr); if (ieee80211_has_a4(hdr->frame_control)) pattrib->hdrlen += ETH_ALEN; /* parsing QC field */ if (pattrib->qos == 1) { __le16 *qptr = (__le16 *)ieee80211_get_qos_ctl(hdr); u16 qos_ctrl = le16_to_cpu(*qptr); pattrib->priority = qos_ctrl & IEEE80211_QOS_CTL_TID_MASK; pattrib->ack_policy = (qos_ctrl >> 5) & 3; pattrib->amsdu = (qos_ctrl & IEEE80211_QOS_CTL_A_MSDU_PRESENT) >> 7; pattrib->hdrlen += IEEE80211_QOS_CTL_LEN; if (pattrib->priority != 0 && pattrib->priority != 3) { adapter->recvpriv.bIsAnyNonBEPkts = true; } } else { pattrib->priority = 0; pattrib->ack_policy = 0; pattrib->amsdu = 0; } if (pattrib->order) { /* HT-CTRL 11n */ pattrib->hdrlen += 4; } precv_frame->preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority]; /* decache, drop duplicate recv packets */ if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "decache : drop pkt\n"); ret = _FAIL; goto exit; } if (pattrib->privacy) { RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "validate_recv_data_frame:pattrib->privacy =%x\n", pattrib->privacy); RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "^^^^^^^^^^^is_multicast_ether_addr(pattrib->ra(0x%02x)) =%d^^^^^^^^^^^^^^^6\n", pattrib->ra[0], is_multicast_ether_addr(pattrib->ra)); GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, is_multicast_ether_addr(pattrib->ra)); RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "pattrib->encrypt =%d\n", pattrib->encrypt); switch (pattrib->encrypt) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: pattrib->iv_len = IEEE80211_WEP_IV_LEN; pattrib->icv_len = IEEE80211_WEP_ICV_LEN; break; case WLAN_CIPHER_SUITE_TKIP: pattrib->iv_len = IEEE80211_TKIP_IV_LEN; pattrib->icv_len = IEEE80211_TKIP_ICV_LEN; break; case WLAN_CIPHER_SUITE_CCMP: pattrib->iv_len = IEEE80211_CCMP_HDR_LEN; pattrib->icv_len = IEEE80211_CCMP_MIC_LEN; break; default: pattrib->iv_len = 0; pattrib->icv_len = 0; break; } } else { pattrib->encrypt = 0; pattrib->iv_len = 0; pattrib->icv_len = 0; } exit: return ret; } static void dump_rx_pkt(struct sk_buff *skb, u16 type, int level) { int i; u8 *ptr; if ((level == 1) || ((level == 2) && (type == IEEE80211_FTYPE_MGMT)) || ((level == 3) && (type == IEEE80211_FTYPE_DATA))) { ptr = skb->data; DBG_8723A("#############################\n"); for (i = 0; i < 64; i = i + 8) DBG_8723A("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr + i), *(ptr + i + 1), *(ptr + i + 2), *(ptr + i + 3), *(ptr + i + 4), *(ptr + i + 5), *(ptr + i + 6), *(ptr + i + 7)); DBG_8723A("#############################\n"); } } static int validate_recv_frame(struct rtw_adapter *adapter, struct recv_frame *precv_frame) { /* shall check frame subtype, to / from ds, da, bssid */ /* then call check if rx seq/frag. duplicated. */ u8 type; u8 subtype; int retval = _SUCCESS; struct rx_pkt_attrib *pattrib = & precv_frame->attrib; struct sk_buff *skb = precv_frame->pkt; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; u8 ver; u8 bDumpRxPkt; u16 seq_ctrl, fctl; fctl = le16_to_cpu(hdr->frame_control); ver = fctl & IEEE80211_FCTL_VERS; type = fctl & IEEE80211_FCTL_FTYPE; subtype = fctl & IEEE80211_FCTL_STYPE; /* add version chk */ if (ver != 0) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "validate_recv_data_frame fail! (ver!= 0)\n"); retval = _FAIL; goto exit; } seq_ctrl = le16_to_cpu(hdr->seq_ctrl); pattrib->frag_num = seq_ctrl & IEEE80211_SCTL_FRAG; pattrib->seq_num = seq_ctrl >> 4; pattrib->pw_save = ieee80211_has_pm(hdr->frame_control); pattrib->mfrag = ieee80211_has_morefrags(hdr->frame_control); pattrib->mdata = ieee80211_has_moredata(hdr->frame_control); pattrib->privacy = ieee80211_has_protected(hdr->frame_control); pattrib->order = ieee80211_has_order(hdr->frame_control); GetHalDefVar8192CUsb(adapter, HAL_DEF_DBG_DUMP_RXPKT, &bDumpRxPkt); if (unlikely(bDumpRxPkt == 1)) dump_rx_pkt(skb, type, bDumpRxPkt); switch (type) { case IEEE80211_FTYPE_MGMT: retval = validate_recv_mgnt_frame(adapter, precv_frame); if (retval == _FAIL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "validate_recv_mgnt_frame fail\n"); } retval = _FAIL; /* only data frame return _SUCCESS */ break; case IEEE80211_FTYPE_CTL: retval = validate_recv_ctrl_frame(adapter, precv_frame); if (retval == _FAIL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "validate_recv_ctrl_frame fail\n"); } retval = _FAIL; /* only data frame return _SUCCESS */ break; case IEEE80211_FTYPE_DATA: pattrib->qos = (subtype & IEEE80211_STYPE_QOS_DATA) ? 1 : 0; retval = validate_recv_data_frame(adapter, precv_frame); if (retval == _FAIL) { struct recv_priv *precvpriv = &adapter->recvpriv; precvpriv->rx_drop++; } break; default: RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "validate_recv_data_frame fail! type = 0x%x\n", type); retval = _FAIL; break; } exit: return retval; } /* remove the wlanhdr and add the eth_hdr */ static int wlanhdr_to_ethhdr (struct recv_frame *precvframe) { u16 eth_type, len, hdrlen; u8 bsnaphdr; u8 *psnap; struct rtw_adapter *adapter = precvframe->adapter; struct mlme_priv *pmlmepriv = &adapter->mlmepriv; struct sk_buff *skb = precvframe->pkt; u8 *ptr; struct rx_pkt_attrib *pattrib = &precvframe->attrib; ptr = skb->data; hdrlen = pattrib->hdrlen; psnap = ptr + hdrlen; eth_type = (psnap[6] << 8) | psnap[7]; /* convert hdr + possible LLC headers into Ethernet header */ /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */ if ((ether_addr_equal(psnap, rfc1042_header) && eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || ether_addr_equal(psnap, bridge_tunnel_header)) { /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */ bsnaphdr = true; hdrlen += SNAP_SIZE; } else { /* Leave Ethernet header part of hdr and full payload */ bsnaphdr = false; eth_type = (psnap[0] << 8) | psnap[1]; } len = skb->len - hdrlen; RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "=== pattrib->hdrlen: %x, pattrib->iv_len:%x ===\n", pattrib->hdrlen, pattrib->iv_len); pattrib->eth_type = eth_type; if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { ptr += hdrlen; *ptr = 0x87; *(ptr + 1) = 0x12; eth_type = 0x8712; /* append rx status for mp test packets */ ptr = skb_pull(skb, (hdrlen - sizeof(struct ethhdr) + 2) - 24); memcpy(ptr, skb->head, 24); ptr += 24; } else { ptr = skb_pull(skb, (hdrlen - sizeof(struct ethhdr) + (bsnaphdr ? 2:0))); } ether_addr_copy(ptr, pattrib->dst); ether_addr_copy(ptr + ETH_ALEN, pattrib->src); if (!bsnaphdr) { len = htons(len); memcpy(ptr + 12, &len, 2); } return _SUCCESS; } /* perform defrag */ struct recv_frame *recvframe_defrag(struct rtw_adapter *adapter, struct rtw_queue *defrag_q); struct recv_frame *recvframe_defrag(struct rtw_adapter *adapter, struct rtw_queue *defrag_q) { struct list_head *plist, *phead, *ptmp; u8 *data, wlanhdr_offset; u8 curfragnum; struct recv_frame *pnfhdr; struct recv_frame *prframe, *pnextrframe; struct rtw_queue *pfree_recv_queue; struct sk_buff *skb; curfragnum = 0; pfree_recv_queue = &adapter->recvpriv.free_recv_queue; phead = get_list_head(defrag_q); plist = phead->next; prframe = container_of(plist, struct recv_frame, list); list_del_init(&prframe->list); skb = prframe->pkt; if (curfragnum != prframe->attrib.frag_num) { /* the first fragment number must be 0 */ /* free the whole queue */ rtw_free_recvframe23a(prframe); rtw_free_recvframe23a_queue(defrag_q); return NULL; } curfragnum++; phead = get_list_head(defrag_q); data = prframe->pkt->data; list_for_each_safe(plist, ptmp, phead) { pnfhdr = container_of(plist, struct recv_frame, list); pnextrframe = (struct recv_frame *)pnfhdr; /* check the fragment sequence (2nd ~n fragment frame) */ if (curfragnum != pnfhdr->attrib.frag_num) { /* the fragment number must be increasing (after decache) */ /* release the defrag_q & prframe */ rtw_free_recvframe23a(prframe); rtw_free_recvframe23a_queue(defrag_q); return NULL; } curfragnum++; /* copy the 2nd~n fragment frame's payload to the first fragment */ /* get the 2nd~last fragment frame's payload */ wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len; skb_pull(pnfhdr->pkt, wlanhdr_offset); /* append to first fragment frame's tail (if privacy frame, pull the ICV) */ skb_trim(skb, skb->len - prframe->attrib.icv_len); memcpy(skb_tail_pointer(skb), pnfhdr->pkt->data, pnfhdr->pkt->len); skb_put(skb, pnfhdr->pkt->len); prframe->attrib.icv_len = pnfhdr->attrib.icv_len; } /* free the defrag_q queue and return the prframe */ rtw_free_recvframe23a_queue(defrag_q); RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "Performance defrag!!!!!\n"); return prframe; } /* check if need to defrag, if needed queue the frame to defrag_q */ struct recv_frame *recvframe_chk_defrag23a(struct rtw_adapter *padapter, struct recv_frame *precv_frame) { u8 ismfrag; u8 fragnum; u8 *psta_addr; struct recv_frame *pfhdr; struct sta_info *psta; struct sta_priv *pstapriv; struct list_head *phead; struct recv_frame *prtnframe = NULL; struct rtw_queue *pfree_recv_queue, *pdefrag_q; pstapriv = &padapter->stapriv; pfhdr = precv_frame; pfree_recv_queue = &padapter->recvpriv.free_recv_queue; /* need to define struct of wlan header frame ctrl */ ismfrag = pfhdr->attrib.mfrag; fragnum = pfhdr->attrib.frag_num; psta_addr = pfhdr->attrib.ta; psta = rtw_get_stainfo23a(pstapriv, psta_addr); if (!psta) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) pfhdr->pkt->data; if (!ieee80211_is_data(hdr->frame_control)) { psta = rtw_get_bcmc_stainfo23a(padapter); pdefrag_q = &psta->sta_recvpriv.defrag_q; } else pdefrag_q = NULL; } else pdefrag_q = &psta->sta_recvpriv.defrag_q; if ((ismfrag == 0) && (fragnum == 0)) { prtnframe = precv_frame;/* isn't a fragment frame */ } if (ismfrag == 1) { /* 0~(n-1) fragment frame */ /* enqueue to defraf_g */ if (pdefrag_q != NULL) { if (fragnum == 0) { /* the first fragment */ if (!list_empty(&pdefrag_q->queue)) { /* free current defrag_q */ rtw_free_recvframe23a_queue(pdefrag_q); } } /* Then enqueue the 0~(n-1) fragment into the defrag_q */ /* spin_lock(&pdefrag_q->lock); */ phead = get_list_head(pdefrag_q); list_add_tail(&pfhdr->list, phead); /* spin_unlock(&pdefrag_q->lock); */ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "Enqueuq: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum); prtnframe = NULL; } else { /* can't find this ta's defrag_queue, so free this recv_frame */ rtw_free_recvframe23a(precv_frame); prtnframe = NULL; RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum); } } if ((ismfrag == 0) && (fragnum != 0)) { /* the last fragment frame */ /* enqueue the last fragment */ if (pdefrag_q != NULL) { /* spin_lock(&pdefrag_q->lock); */ phead = get_list_head(pdefrag_q); list_add_tail(&pfhdr->list, phead); /* spin_unlock(&pdefrag_q->lock); */ /* call recvframe_defrag to defrag */ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "defrag: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum); precv_frame = recvframe_defrag(padapter, pdefrag_q); prtnframe = precv_frame; } else { /* can't find this ta's defrag_queue, so free this recv_frame */ rtw_free_recvframe23a(precv_frame); prtnframe = NULL; RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "Free because pdefrag_q == NULL: ismfrag = %d, fragnum = %d\n", ismfrag, fragnum); } } if ((prtnframe != NULL) && (prtnframe->attrib.privacy)) { /* after defrag we must check tkip mic code */ if (recvframe_chkmic(padapter, prtnframe) == _FAIL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "recvframe_chkmic(padapter, prtnframe) ==_FAIL\n"); rtw_free_recvframe23a(prtnframe); prtnframe = NULL; } } return prtnframe; } int amsdu_to_msdu(struct rtw_adapter *padapter, struct recv_frame *prframe); int amsdu_to_msdu(struct rtw_adapter *padapter, struct recv_frame *prframe) { struct rx_pkt_attrib *pattrib; struct sk_buff *skb, *sub_skb; struct sk_buff_head skb_list; pattrib = &prframe->attrib; skb = prframe->pkt; skb_pull(skb, prframe->attrib.hdrlen); __skb_queue_head_init(&skb_list); ieee80211_amsdu_to_8023s(skb, &skb_list, NULL, 0, 0, false); while (!skb_queue_empty(&skb_list)) { sub_skb = __skb_dequeue(&skb_list); sub_skb->protocol = eth_type_trans(sub_skb, padapter->pnetdev); sub_skb->dev = padapter->pnetdev; sub_skb->ip_summed = CHECKSUM_NONE; netif_rx(sub_skb); } prframe->pkt = NULL; rtw_free_recvframe23a(prframe); return _SUCCESS; } int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num); int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num) { u8 wsize = preorder_ctrl->wsize_b; u16 wend = (preorder_ctrl->indicate_seq + wsize -1) & 0xFFF; /* Rx Reorder initialize condition. */ if (preorder_ctrl->indicate_seq == 0xFFFF) preorder_ctrl->indicate_seq = seq_num; /* Drop out the packet which SeqNum is smaller than WinStart */ if (SN_LESS(seq_num, preorder_ctrl->indicate_seq)) return false; /* */ /* Sliding window manipulation. Conditions includes: */ /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */ /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */ /* */ if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) { preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF; } else if (SN_LESS(wend, seq_num)) { /* boundary situation, when seq_num cross 0xFFF */ if (seq_num >= (wsize - 1)) preorder_ctrl->indicate_seq = seq_num + 1 -wsize; else preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1; } return true; } static int enqueue_reorder_recvframe23a(struct recv_reorder_ctrl *preorder_ctrl, struct recv_frame *prframe) { struct rx_pkt_attrib *pattrib = &prframe->attrib; struct rtw_queue *ppending_recvframe_queue; struct list_head *phead, *plist, *ptmp; struct recv_frame *hdr; struct rx_pkt_attrib *pnextattrib; ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; /* DbgPrint("+enqueue_reorder_recvframe23a()\n"); */ /* spin_lock_irqsave(&ppending_recvframe_queue->lock); */ /* spin_lock_ex(&ppending_recvframe_queue->lock); */ phead = get_list_head(ppending_recvframe_queue); list_for_each_safe(plist, ptmp, phead) { hdr = container_of(plist, struct recv_frame, list); pnextattrib = &hdr->attrib; if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num)) { continue; } else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num)) { /* Duplicate entry is found!! Do not insert current entry. */ /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock); */ return false; } else { break; } /* DbgPrint("enqueue_reorder_recvframe23a():while\n"); */ } /* spin_lock_irqsave(&ppending_recvframe_queue->lock); */ /* spin_lock_ex(&ppending_recvframe_queue->lock); */ list_del_init(&prframe->list); list_add_tail(&prframe->list, plist); /* spin_unlock_ex(&ppending_recvframe_queue->lock); */ /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock); */ return true; } int recv_indicatepkts_in_order(struct rtw_adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced); int recv_indicatepkts_in_order(struct rtw_adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced) { /* u8 bcancelled; */ struct list_head *phead, *plist; struct recv_frame *prframe; struct rx_pkt_attrib *pattrib; /* u8 index = 0; */ int bPktInBuf = false; struct recv_priv *precvpriv; struct rtw_queue *ppending_recvframe_queue; precvpriv = &padapter->recvpriv; ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; /* DbgPrint("+recv_indicatepkts_in_order\n"); */ /* spin_lock_irqsave(&ppending_recvframe_queue->lock); */ /* spin_lock_ex(&ppending_recvframe_queue->lock); */ phead = get_list_head(ppending_recvframe_queue); plist = phead->next; /* Handling some condition for forced indicate case. */ if (bforced) { if (list_empty(phead)) { /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock); */ /* spin_unlock_ex(&ppending_recvframe_queue->lock); */ return true; } prframe = container_of(plist, struct recv_frame, list); pattrib = &prframe->attrib; preorder_ctrl->indicate_seq = pattrib->seq_num; } /* Prepare indication list and indication. */ /* Check if there is any packet need indicate. */ while (!list_empty(phead)) { prframe = container_of(plist, struct recv_frame, list); pattrib = &prframe->attrib; if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) { RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, "recv_indicatepkts_in_order: indicate =%d seq =%d amsdu =%d\n", preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu); plist = plist->next; list_del_init(&prframe->list); if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num)) { preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)&0xFFF; } if (!pattrib->amsdu) { if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) { rtw_recv_indicatepkt23a(padapter, prframe); } } else { if (amsdu_to_msdu(padapter, prframe) != _SUCCESS) rtw_free_recvframe23a(prframe); } /* Update local variables. */ bPktInBuf = false; } else { bPktInBuf = true; break; } /* DbgPrint("recv_indicatepkts_in_order():while\n"); */ } /* spin_unlock_ex(&ppending_recvframe_queue->lock); */ /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock); */ return bPktInBuf; } int recv_indicatepkt_reorder(struct rtw_adapter *padapter, struct recv_frame *prframe); int recv_indicatepkt_reorder(struct rtw_adapter *padapter, struct recv_frame *prframe) { int retval = _SUCCESS; struct rx_pkt_attrib *pattrib; struct recv_reorder_ctrl *preorder_ctrl; struct rtw_queue *ppending_recvframe_queue; pattrib = &prframe->attrib; preorder_ctrl = prframe->preorder_ctrl; ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; if (!pattrib->amsdu) { /* s1. */ wlanhdr_to_ethhdr(prframe); if ((pattrib->qos!= 1) || (pattrib->eth_type == ETH_P_ARP) || (pattrib->ack_policy != 0)) { if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) { RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, "@@@@ recv_indicatepkt_reorder -recv_func recv_indicatepkt\n"); rtw_recv_indicatepkt23a(padapter, prframe); return _SUCCESS; } return _FAIL; } if (preorder_ctrl->enable == false) { /* indicate this recv_frame */ preorder_ctrl->indicate_seq = pattrib->seq_num; rtw_recv_indicatepkt23a(padapter, prframe); preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) % 4096; return _SUCCESS; } } else { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */ if (preorder_ctrl->enable == false) { preorder_ctrl->indicate_seq = pattrib->seq_num; retval = amsdu_to_msdu(padapter, prframe); preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) % 4096; return retval; } } spin_lock_bh(&ppending_recvframe_queue->lock); RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, "recv_indicatepkt_reorder: indicate =%d seq =%d\n", preorder_ctrl->indicate_seq, pattrib->seq_num); /* s2. check if winstart_b(indicate_seq) needs to been updated */ if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) { goto _err_exit; } /* s3. Insert all packet into Reorder Queue to maintain its ordering. */ if (!enqueue_reorder_recvframe23a(preorder_ctrl, prframe)) { goto _err_exit; } /* s4. */ /* Indication process. */ /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */ /* with the SeqNum smaller than latest WinStart and buffer other packets. */ /* */ /* For Rx Reorder condition: */ /* 1. All packets with SeqNum smaller than WinStart => Indicate */ /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */ /* */ if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) { mod_timer(&preorder_ctrl->reordering_ctrl_timer, jiffies + msecs_to_jiffies(REORDER_WAIT_TIME)); spin_unlock_bh(&ppending_recvframe_queue->lock); } else { spin_unlock_bh(&ppending_recvframe_queue->lock); del_timer_sync(&preorder_ctrl->reordering_ctrl_timer); } return _SUCCESS; _err_exit: spin_unlock_bh(&ppending_recvframe_queue->lock); return _FAIL; } void rtw_reordering_ctrl_timeout_handler23a(unsigned long pcontext) { struct recv_reorder_ctrl *preorder_ctrl; struct rtw_adapter *padapter; struct rtw_queue *ppending_recvframe_queue; preorder_ctrl = (struct recv_reorder_ctrl *)pcontext; padapter = preorder_ctrl->padapter; ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; if (padapter->bDriverStopped || padapter->bSurpriseRemoved) { return; } /* DBG_8723A("+rtw_reordering_ctrl_timeout_handler23a() =>\n"); */ spin_lock_bh(&ppending_recvframe_queue->lock); if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true) { mod_timer(&preorder_ctrl->reordering_ctrl_timer, jiffies + msecs_to_jiffies(REORDER_WAIT_TIME)); } spin_unlock_bh(&ppending_recvframe_queue->lock); } int process_recv_indicatepkts(struct rtw_adapter *padapter, struct recv_frame *prframe); int process_recv_indicatepkts(struct rtw_adapter *padapter, struct recv_frame *prframe) { int retval = _SUCCESS; /* struct recv_priv *precvpriv = &padapter->recvpriv; */ /* struct rx_pkt_attrib *pattrib = &prframe->attrib; */ struct mlme_priv *pmlmepriv = &padapter->mlmepriv; struct ht_priv *phtpriv = &pmlmepriv->htpriv; if (phtpriv->ht_option == true) { /* B/G/N Mode */ /* prframe->preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */ /* including perform A-MPDU Rx Ordering Buffer Control */ if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) { retval = _FAIL; return retval; } } } else { /* B/G mode */ retval = wlanhdr_to_ethhdr(prframe); if (retval != _SUCCESS) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "wlanhdr_to_ethhdr: drop pkt\n"); return retval; } if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) { /* indicate this recv_frame */ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, "@@@@ process_recv_indicatepkts- recv_func recv_indicatepkt\n"); rtw_recv_indicatepkt23a(padapter, prframe); } else { RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, "@@@@ process_recv_indicatepkts- recv_func free_indicatepkt\n"); RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, "recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)\n", padapter->bDriverStopped, padapter->bSurpriseRemoved); retval = _FAIL; return retval; } } return retval; } static int recv_func_prehandle(struct rtw_adapter *padapter, struct recv_frame *rframe) { int ret = _SUCCESS; /* check the frame crtl field and decache */ ret = validate_recv_frame(padapter, rframe); if (ret != _SUCCESS) { RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, "recv_func: validate_recv_frame fail! drop pkt\n"); rtw_free_recvframe23a(rframe); goto exit; } exit: return ret; } static int recv_func_posthandle(struct rtw_adapter *padapter, struct recv_frame *prframe) { int ret = _SUCCESS; struct recv_frame *orig_prframe = prframe; struct recv_priv *precvpriv = &padapter->recvpriv; /* DATA FRAME */ prframe = decryptor(padapter, prframe); if (prframe == NULL) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "decryptor: drop pkt\n"); ret = _FAIL; goto _recv_data_drop; } prframe = recvframe_chk_defrag23a(padapter, prframe); if (!prframe) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "recvframe_chk_defrag23a: drop pkt\n"); goto _recv_data_drop; } /* * Pull off crypto headers */ if (prframe->attrib.iv_len > 0) { skb_pull(prframe->pkt, prframe->attrib.iv_len); } if (prframe->attrib.icv_len > 0) { skb_trim(prframe->pkt, prframe->pkt->len - prframe->attrib.icv_len); } prframe = portctrl(padapter, prframe); if (!prframe) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "portctrl: drop pkt\n"); ret = _FAIL; goto _recv_data_drop; } count_rx_stats(padapter, prframe, NULL); ret = process_recv_indicatepkts(padapter, prframe); if (ret != _SUCCESS) { RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, "recv_func: process_recv_indicatepkts fail!\n"); rtw_free_recvframe23a(orig_prframe);/* free this recv_frame */ goto _recv_data_drop; } return ret; _recv_data_drop: precvpriv->rx_drop++; return ret; } int rtw_recv_entry23a(struct recv_frame *rframe) { int ret, r; struct rtw_adapter *padapter = rframe->adapter; struct rx_pkt_attrib *prxattrib = &rframe->attrib; struct recv_priv *recvpriv = &padapter->recvpriv; struct security_priv *psecuritypriv = &padapter->securitypriv; struct mlme_priv *mlmepriv = &padapter->mlmepriv; /* check if need to handle uc_swdec_pending_queue*/ if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) { struct recv_frame *pending_frame; while ((pending_frame = rtw_alloc_recvframe23a(&padapter->recvpriv.uc_swdec_pending_queue))) { r = recv_func_posthandle(padapter, pending_frame); if (r == _SUCCESS) DBG_8723A("%s: dequeue uc_swdec_pending_queue\n", __func__); } } ret = recv_func_prehandle(padapter, rframe); if (ret == _SUCCESS) { /* check if need to enqueue into uc_swdec_pending_queue*/ if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && !is_multicast_ether_addr(prxattrib->ra) && prxattrib->encrypt > 0 && (prxattrib->bdecrypted == 0) && !is_wep_enc(psecuritypriv->dot11PrivacyAlgrthm) && !psecuritypriv->busetkipkey) { rtw_enqueue_recvframe23a(rframe, &padapter->recvpriv.uc_swdec_pending_queue); DBG_8723A("%s: no key, enqueue uc_swdec_pending_queue\n", __func__); goto exit; } ret = recv_func_posthandle(padapter, rframe); recvpriv->rx_pkts++; } exit: return ret; } void rtw_signal_stat_timer_hdl23a(unsigned long data) { struct rtw_adapter *adapter = (struct rtw_adapter *)data; struct recv_priv *recvpriv = &adapter->recvpriv; u32 tmp_s, tmp_q; u8 avg_signal_strength = 0; u8 avg_signal_qual = 0; u32 num_signal_strength = 0; u32 num_signal_qual = 0; u8 _alpha = 3; /* this value is based on converging_constant = 5000 */ /* and sampling_interval = 1000 */ if (recvpriv->signal_strength_data.update_req == 0) { /* update_req is clear, means we got rx */ avg_signal_strength = recvpriv->signal_strength_data.avg_val; num_signal_strength = recvpriv->signal_strength_data.total_num; /* after avg_vals are acquired, we can re-stat */ /* the signal values */ recvpriv->signal_strength_data.update_req = 1; } if (recvpriv->signal_qual_data.update_req == 0) { /* update_req is clear, means we got rx */ avg_signal_qual = recvpriv->signal_qual_data.avg_val; num_signal_qual = recvpriv->signal_qual_data.total_num; /* after avg_vals are acquired, we can re-stat */ /*the signal values */ recvpriv->signal_qual_data.update_req = 1; } /* update value of signal_strength, rssi, signal_qual */ if (!check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY)) { tmp_s = avg_signal_strength + (_alpha - 1) * recvpriv->signal_strength; if (tmp_s %_alpha) tmp_s = tmp_s / _alpha + 1; else tmp_s = tmp_s / _alpha; if (tmp_s > 100) tmp_s = 100; tmp_q = avg_signal_qual + (_alpha - 1) * recvpriv->signal_qual; if (tmp_q %_alpha) tmp_q = tmp_q / _alpha + 1; else tmp_q = tmp_q / _alpha; if (tmp_q > 100) tmp_q = 100; recvpriv->signal_strength = tmp_s; recvpriv->signal_qual = tmp_q; DBG_8723A("%s signal_strength:%3u, signal_qual:%3u, " "num_signal_strength:%u, num_signal_qual:%u\n", __func__, recvpriv->signal_strength, recvpriv->signal_qual, num_signal_strength, num_signal_qual); } rtw_set_signal_stat_timer(recvpriv); }