cregit-Linux how code gets into the kernel

Release 4.7 drivers/staging/rtl8188eu/hal/rtl8188e_rxdesc.c

/******************************************************************************
 *
 * Copyright(c) 2007 - 2011 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 _RTL8188E_REDESC_C_

#include <osdep_service.h>
#include <drv_types.h>
#include <rtl8188e_hal.h>


static void process_rssi(struct adapter *padapter, struct recv_frame *prframe) { struct rx_pkt_attrib *pattrib = &prframe->attrib; struct signal_stat *signal_stat = &padapter->recvpriv.signal_strength_data; if (signal_stat->update_req) { signal_stat->total_num = 0; signal_stat->total_val = 0; signal_stat->update_req = 0; } signal_stat->total_num++; signal_stat->total_val += pattrib->phy_info.SignalStrength; signal_stat->avg_val = signal_stat->total_val / signal_stat->total_num; }

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/* Process_UI_RSSI_8192C */
static void process_link_qual(struct adapter *padapter, struct recv_frame *prframe) { struct rx_pkt_attrib *pattrib; struct signal_stat *signal_stat; if (!prframe || !padapter) return; pattrib = &prframe->attrib; signal_stat = &padapter->recvpriv.signal_qual_data; if (signal_stat->update_req) { signal_stat->total_num = 0; signal_stat->total_val = 0; signal_stat->update_req = 0; } signal_stat->total_num++; signal_stat->total_val += pattrib->phy_info.SignalQuality; signal_stat->avg_val = signal_stat->total_val / signal_stat->total_num; }

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void rtl8188e_process_phy_info(struct adapter *padapter, void *prframe) { struct recv_frame *precvframe = prframe; /* Check RSSI */ process_rssi(padapter, precvframe); /* Check EVM */ process_link_qual(padapter, precvframe); }

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void update_recvframe_attrib_88e(struct recv_frame *precvframe, struct recv_stat *prxstat) { struct rx_pkt_attrib *pattrib; struct recv_stat report; report.rxdw0 = prxstat->rxdw0; report.rxdw1 = prxstat->rxdw1; report.rxdw2 = prxstat->rxdw2; report.rxdw3 = prxstat->rxdw3; report.rxdw4 = prxstat->rxdw4; report.rxdw5 = prxstat->rxdw5; pattrib = &precvframe->attrib; memset(pattrib, 0, sizeof(struct rx_pkt_attrib)); pattrib->crc_err = (u8)((le32_to_cpu(report.rxdw0) >> 14) & 0x1);/* u8)prxreport->crc32; */ /* update rx report to recv_frame attribute */ pattrib->pkt_rpt_type = (u8)((le32_to_cpu(report.rxdw3) >> 14) & 0x3);/* prxreport->rpt_sel; */ if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */ pattrib->pkt_len = (u16)(le32_to_cpu(report.rxdw0) & 0x00003fff);/* u16)prxreport->pktlen; */ pattrib->drvinfo_sz = (u8)((le32_to_cpu(report.rxdw0) >> 16) & 0xf) * 8;/* u8)(prxreport->drvinfosize << 3); */ pattrib->physt = (u8)((le32_to_cpu(report.rxdw0) >> 26) & 0x1);/* u8)prxreport->physt; */ pattrib->bdecrypted = (le32_to_cpu(report.rxdw0) & BIT(27)) ? 0 : 1;/* u8)(prxreport->swdec ? 0 : 1); */ pattrib->encrypt = (u8)((le32_to_cpu(report.rxdw0) >> 20) & 0x7);/* u8)prxreport->security; */ pattrib->qos = (u8)((le32_to_cpu(report.rxdw0) >> 23) & 0x1);/* u8)prxreport->qos; */ pattrib->priority = (u8)((le32_to_cpu(report.rxdw1) >> 8) & 0xf);/* u8)prxreport->tid; */ pattrib->amsdu = (u8)((le32_to_cpu(report.rxdw1) >> 13) & 0x1);/* u8)prxreport->amsdu; */ pattrib->seq_num = (u16)(le32_to_cpu(report.rxdw2) & 0x00000fff);/* u16)prxreport->seq; */ pattrib->frag_num = (u8)((le32_to_cpu(report.rxdw2) >> 12) & 0xf);/* u8)prxreport->frag; */ pattrib->mfrag = (u8)((le32_to_cpu(report.rxdw1) >> 27) & 0x1);/* u8)prxreport->mf; */ pattrib->mdata = (u8)((le32_to_cpu(report.rxdw1) >> 26) & 0x1);/* u8)prxreport->md; */ pattrib->mcs_rate = (u8)(le32_to_cpu(report.rxdw3) & 0x3f);/* u8)prxreport->rxmcs; */ pattrib->rxht = (u8)((le32_to_cpu(report.rxdw3) >> 6) & 0x1);/* u8)prxreport->rxht; */ pattrib->icv_err = (u8)((le32_to_cpu(report.rxdw0) >> 15) & 0x1);/* u8)prxreport->icverr; */ pattrib->shift_sz = (u8)((le32_to_cpu(report.rxdw0) >> 24) & 0x3); } else if (pattrib->pkt_rpt_type == TX_REPORT1) { /* CCX */ pattrib->pkt_len = TX_RPT1_PKT_LEN; pattrib->drvinfo_sz = 0; } else if (pattrib->pkt_rpt_type == TX_REPORT2) { /* TX RPT */ pattrib->pkt_len = (u16)(le32_to_cpu(report.rxdw0) & 0x3FF);/* Rx length[9:0] */ pattrib->drvinfo_sz = 0; /* */ /* Get TX report MAC ID valid. */ /* */ pattrib->MacIDValidEntry[0] = le32_to_cpu(report.rxdw4); pattrib->MacIDValidEntry[1] = le32_to_cpu(report.rxdw5); } else if (pattrib->pkt_rpt_type == HIS_REPORT) { /* USB HISR RPT */ pattrib->pkt_len = (u16)(le32_to_cpu(report.rxdw0) & 0x00003fff);/* u16)prxreport->pktlen; */ } }

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/* * Notice: * Before calling this function, * precvframe->rx_data should be ready! */
void update_recvframe_phyinfo_88e(struct recv_frame *precvframe, struct phy_stat *pphy_status) { struct adapter *padapter = precvframe->adapter; struct rx_pkt_attrib *pattrib = &precvframe->attrib; struct hal_data_8188e *pHalData = GET_HAL_DATA(padapter); struct odm_phy_status_info *pPHYInfo = (struct odm_phy_status_info *)(&pattrib->phy_info); u8 *wlanhdr; struct odm_per_pkt_info pkt_info; u8 *sa = NULL; struct sta_priv *pstapriv; struct sta_info *psta; pkt_info.bPacketMatchBSSID = false; pkt_info.bPacketToSelf = false; pkt_info.bPacketBeacon = false; wlanhdr = precvframe->rx_data; pkt_info.bPacketMatchBSSID = ((!IsFrameTypeCtrl(wlanhdr)) && !pattrib->icv_err && !pattrib->crc_err && !memcmp(get_hdr_bssid(wlanhdr), get_bssid(&padapter->mlmepriv), ETH_ALEN)); pkt_info.bPacketToSelf = pkt_info.bPacketMatchBSSID && (!memcmp(get_da(wlanhdr), myid(&padapter->eeprompriv), ETH_ALEN)); pkt_info.bPacketBeacon = pkt_info.bPacketMatchBSSID && (GetFrameSubType(wlanhdr) == WIFI_BEACON); if (pkt_info.bPacketBeacon) { if (check_fwstate(&padapter->mlmepriv, WIFI_STATION_STATE)) sa = padapter->mlmepriv.cur_network.network.MacAddress; /* to do Ad-hoc */ } else { sa = get_sa(wlanhdr); } pstapriv = &padapter->stapriv; pkt_info.StationID = 0xFF; psta = rtw_get_stainfo(pstapriv, sa); if (psta) pkt_info.StationID = psta->mac_id; pkt_info.Rate = pattrib->mcs_rate; ODM_PhyStatusQuery(&pHalData->odmpriv, pPHYInfo, (u8 *)pphy_status, &(pkt_info)); precvframe->psta = NULL; if (pkt_info.bPacketMatchBSSID && (check_fwstate(&padapter->mlmepriv, WIFI_AP_STATE))) { if (psta) { precvframe->psta = psta; rtl8188e_process_phy_info(padapter, precvframe); } } else if (pkt_info.bPacketToSelf || pkt_info.bPacketBeacon) { if (check_fwstate(&padapter->mlmepriv, WIFI_ADHOC_STATE|WIFI_ADHOC_MASTER_STATE)) { if (psta) precvframe->psta = psta; } rtl8188e_process_phy_info(padapter, precvframe); } }

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