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a036032a76
Driver Bug Fixes: ----------------- 1. LF-6972: Updated the License to GPL-2.0 2. Incremented the driver version Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
462 lines
15 KiB
C
462 lines
15 KiB
C
/**
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* @file mlan_meas.c
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*
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* @brief Implementation of measurement interface code with the app/firmware
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*
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* Driver implementation for sending and retrieving measurement requests
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* and responses.
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*
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* Current use is limited to 802.11h.
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*
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* Requires use of the following preprocessor define:
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* - ENABLE_MEAS
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*
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*
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* Copyright 2008-2021 NXP
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*
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* This software file (the File) is distributed by NXP
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* under the terms of the GNU General Public License Version 2, June 1991
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* (the License). You may use, redistribute and/or modify the File in
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* accordance with the terms and conditions of the License, a copy of which
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* is available by writing to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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*
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
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* this warranty disclaimer.
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*
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*/
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/*************************************************************
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Change Log:
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03/24/2009: initial version
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************************************************************/
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#include "mlan.h"
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#include "mlan_join.h"
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#include "mlan_util.h"
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#include "mlan_fw.h"
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#include "mlan_main.h"
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#include "mlan_ioctl.h"
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#include "mlan_meas.h"
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#ifdef DEBUG_LEVEL2
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/** String descriptions of the different measurement enums. Debug display */
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static const char *meas_type_str[WLAN_MEAS_NUM_TYPES] = {
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"basic",
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};
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/********************************************************
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Local Functions
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********************************************************/
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/**
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* @brief Retrieve the measurement string representation of a meas_type enum
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* Used for debug display only
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*
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* @param meas_type Measurement type enumeration input for string lookup
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*
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* @return Constant string representing measurement type
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*/
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static const char *wlan_meas_get_meas_type_str(MeasType_t meas_type)
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{
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if (meas_type <= WLAN_MEAS_11H_MAX_TYPE)
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return meas_type_str[meas_type];
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return "Invld";
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}
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#endif
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/**
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* @brief Debug print display of the input measurement request
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*
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* @param pmeas_req Pointer to the measurement request to display
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*
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* @return N/A
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*/
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static void
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wlan_meas_dump_meas_req(const HostCmd_DS_MEASUREMENT_REQUEST *pmeas_req)
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{
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ENTER();
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PRINTM(MINFO, "Meas: Req: ------------------------------\n");
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PRINTM(MINFO, "Meas: Req: mac_addr: " MACSTR "\n",
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MAC2STR(pmeas_req->mac_addr));
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PRINTM(MINFO, "Meas: Req: dlgTkn: %d\n", pmeas_req->dialog_token);
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PRINTM(MINFO, "Meas: Req: mode: dm[%c] rpt[%c] req[%c]\n",
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pmeas_req->req_mode.duration_mandatory ? 'X' : ' ',
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pmeas_req->req_mode.report ? 'X' : ' ',
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pmeas_req->req_mode.request ? 'X' : ' ');
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PRINTM(MINFO, "Meas: Req: : en[%c] par[%c]\n",
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pmeas_req->req_mode.enable ? 'X' : ' ',
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pmeas_req->req_mode.parallel ? 'X' : ' ');
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#ifdef DEBUG_LEVEL2
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PRINTM(MINFO, "Meas: Req: measTyp: %s\n",
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wlan_meas_get_meas_type_str(pmeas_req->meas_type));
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#endif
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switch (pmeas_req->meas_type) {
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case WLAN_MEAS_BASIC:
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/* Lazy cheat, fields of bas, cca, rpi union match on the
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* request */
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PRINTM(MINFO, "Meas: Req: chan: %u\n",
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pmeas_req->req.basic.channel);
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PRINTM(MINFO, "Meas: Req: strt: %llu\n",
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wlan_le64_to_cpu(pmeas_req->req.basic.start_time));
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PRINTM(MINFO, "Meas: Req: dur: %u\n",
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wlan_le16_to_cpu(pmeas_req->req.basic.duration));
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break;
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default:
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PRINTM(MINFO, "Meas: Req: <unhandled>\n");
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break;
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}
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PRINTM(MINFO, "Meas: Req: ------------------------------\n");
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LEAVE();
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}
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/**
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* @brief Debug print display of the input measurement report
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*
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* @param pmeas_rpt Pointer to measurement report to display
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*
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* @return N/A
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*/
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static void
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wlan_meas_dump_meas_rpt(const HostCmd_DS_MEASUREMENT_REPORT *pmeas_rpt)
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{
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MeasType_t type;
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ENTER();
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PRINTM(MINFO, "Meas: Rpt: ------------------------------\n");
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PRINTM(MINFO, "Meas: Rpt: mac_addr: " MACSTR "\n",
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MAC2STR(pmeas_rpt->mac_addr));
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PRINTM(MINFO, "Meas: Rpt: dlgTkn: %d\n", pmeas_rpt->dialog_token);
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PRINTM(MINFO, "Meas: Rpt: rptMode: (%x): Rfs[%c] ICp[%c] Lt[%c]\n",
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*(t_u8 *)&pmeas_rpt->rpt_mode,
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pmeas_rpt->rpt_mode.refused ? 'X' : ' ',
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pmeas_rpt->rpt_mode.incapable ? 'X' : ' ',
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pmeas_rpt->rpt_mode.late ? 'X' : ' ');
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#ifdef DEBUG_LEVEL2
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PRINTM(MINFO, "Meas: Rpt: measTyp: %s\n",
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wlan_meas_get_meas_type_str(pmeas_rpt->meas_type));
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#endif
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type = wlan_le32_to_cpu(pmeas_rpt->meas_type);
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switch (type) {
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case WLAN_MEAS_BASIC:
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PRINTM(MINFO, "Meas: Rpt: chan: %u\n",
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pmeas_rpt->rpt.basic.channel);
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PRINTM(MINFO, "Meas: Rpt: strt: %llu\n",
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wlan_le64_to_cpu(pmeas_rpt->rpt.basic.start_time));
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PRINTM(MINFO, "Meas: Rpt: dur: %u\n",
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wlan_le16_to_cpu(pmeas_rpt->rpt.basic.duration));
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PRINTM(MINFO, "Meas: Rpt: bas: (%x): unmsd[%c], radar[%c]\n",
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*(t_u8 *)&(pmeas_rpt->rpt.basic.map),
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pmeas_rpt->rpt.basic.map.unmeasured ? 'X' : ' ',
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pmeas_rpt->rpt.basic.map.radar ? 'X' : ' ');
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PRINTM(MINFO, "Meas: Rpt: bas: unidSig[%c] ofdm[%c] bss[%c]\n",
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pmeas_rpt->rpt.basic.map.unidentified_sig ? 'X' : ' ',
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pmeas_rpt->rpt.basic.map.ofdm_preamble ? 'X' : ' ',
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pmeas_rpt->rpt.basic.map.bss ? 'X' : ' ');
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break;
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default:
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PRINTM(MINFO, "Meas: Rpt: <unhandled>\n");
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break;
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}
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PRINTM(MINFO, "Meas: Rpt: ------------------------------\n");
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LEAVE();
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}
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/**
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* @brief Retrieve a measurement report from the firmware
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*
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* Callback from command processing when a measurement report is received
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* from the firmware. Perform the following when a report is received:
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*
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* -# Debug displays the report if compiled with the appropriate flags
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* -# If we are pending on a specific measurement report token, and it
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* matches the received report's token, store the report and wake up
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* any pending threads
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*
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* @param pmpriv Private driver information structure
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* @param resp HostCmd_DS_COMMAND struct returned from the firmware command
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* passing a HostCmd_DS_MEASUREMENT_REPORT structure.
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*
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* @return MLAN_STATUS_SUCCESS
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*/
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static int wlan_meas_cmdresp_get_report(mlan_private *pmpriv,
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const HostCmd_DS_COMMAND *resp)
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{
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mlan_adapter *pmadapter = pmpriv->adapter;
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const HostCmd_DS_MEASUREMENT_REPORT *pmeas_rpt = &resp->params.meas_rpt;
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ENTER();
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PRINTM(MINFO, "Meas: Rpt: %#x-%u, Seq=%u, Ret=%u\n", resp->command,
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resp->size, resp->seq_num, resp->result);
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/* Debug displays the measurement report */
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wlan_meas_dump_meas_rpt(pmeas_rpt);
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/*
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* Check if we are pending on a measurement report and it matches
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* the dialog token of the received report:
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*/
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if (pmadapter->state_meas.meas_rpt_pend_on &&
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pmadapter->state_meas.meas_rpt_pend_on == pmeas_rpt->dialog_token) {
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PRINTM(MINFO, "Meas: Rpt: RCV'd Pend on meas #%d\n",
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pmadapter->state_meas.meas_rpt_pend_on);
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/* Clear the pending report indicator */
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pmadapter->state_meas.meas_rpt_pend_on = 0;
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/* Copy the received report into the measurement state for
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* retrieval */
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memcpy_ext(pmadapter, &pmadapter->state_meas.meas_rpt_returned,
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pmeas_rpt,
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sizeof(pmadapter->state_meas.meas_rpt_returned),
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sizeof(pmadapter->state_meas.meas_rpt_returned));
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/*
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* Wake up any threads pending on the wait queue
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*/
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wlan_recv_event(pmpriv, MLAN_EVENT_ID_DRV_MEAS_REPORT, MNULL);
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}
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LEAVE();
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return MLAN_STATUS_SUCCESS;
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}
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/**
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* @brief Prepare CMD_MEASURMENT_REPORT firmware command
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*
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* @param pmpriv Private driver information structure
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* @param pcmd_ptr Output parameter: Pointer to the command being prepared
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* for the firmware
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* @param pinfo_buf HostCmd_DS_MEASUREMENT_REQUEST passed as void data block
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*
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* @return MLAN_STATUS_SUCCESS
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*/
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static int wlan_meas_cmd_request(mlan_private *pmpriv,
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HostCmd_DS_COMMAND *pcmd_ptr,
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const void *pinfo_buf)
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{
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const HostCmd_DS_MEASUREMENT_REQUEST *pmeas_req =
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(HostCmd_DS_MEASUREMENT_REQUEST *)pinfo_buf;
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ENTER();
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pcmd_ptr->command = HostCmd_CMD_MEASUREMENT_REQUEST;
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pcmd_ptr->size = sizeof(HostCmd_DS_MEASUREMENT_REQUEST) + S_DS_GEN;
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memcpy_ext(pmpriv->adapter, &pcmd_ptr->params.meas_req, pmeas_req,
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sizeof(pcmd_ptr->params.meas_req),
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sizeof(pcmd_ptr->params.meas_req));
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PRINTM(MINFO, "Meas: Req: %#x-%u, Seq=%u, Ret=%u\n", pcmd_ptr->command,
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pcmd_ptr->size, pcmd_ptr->seq_num, pcmd_ptr->result);
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wlan_meas_dump_meas_req(pmeas_req);
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LEAVE();
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return MLAN_STATUS_SUCCESS;
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}
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/**
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* @brief Retrieve a measurement report from the firmware
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*
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* The firmware will send a EVENT_MEAS_REPORT_RDY event when it
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* completes or receives a measurement report. The event response
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* handler will then start a HostCmd_CMD_MEASUREMENT_REPORT firmware command
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* which gets completed for transmission to the firmware in this routine.
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*
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* @param pmpriv Private driver information structure
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* @param pcmd_ptr Output parameter: Pointer to the command being prepared
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* for the firmware
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*
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* @return MLAN_STATUS_SUCCESS
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*/
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static int wlan_meas_cmd_get_report(mlan_private *pmpriv,
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HostCmd_DS_COMMAND *pcmd_ptr)
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{
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ENTER();
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pcmd_ptr->command = HostCmd_CMD_MEASUREMENT_REPORT;
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pcmd_ptr->size = sizeof(HostCmd_DS_MEASUREMENT_REPORT) + S_DS_GEN;
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memset(pmpriv->adapter, &pcmd_ptr->params.meas_rpt, 0x00,
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sizeof(pcmd_ptr->params.meas_rpt));
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/*
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* Set the meas_rpt.mac_addr to our mac address to get a meas report,
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* setting the mac to another STA address instructs the firmware
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* to transmit this measurement report frame instead
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*/
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memcpy_ext(pmpriv->adapter, pcmd_ptr->params.meas_rpt.mac_addr,
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pmpriv->curr_addr,
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sizeof(pcmd_ptr->params.meas_rpt.mac_addr),
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sizeof(pcmd_ptr->params.meas_rpt.mac_addr));
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LEAVE();
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return MLAN_STATUS_SUCCESS;
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}
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/********************************************************
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Global functions
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********************************************************/
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/**
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* @brief Send the input measurement request to the firmware.
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*
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* If the dialog token in the measurement request is set to 0, the function
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* will use an local static auto-incremented token in the measurement
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* request. This ensures the dialog token is always set.
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*
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* If wait_for_resp_timeout is set, the function will block its return on
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* a timeout or returned measurement report that matches the requests
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* dialog token.
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*
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* @param pmpriv Private driver information structure
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* @param pmeas_req Pointer to the measurement request to send
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* @param wait_for_resp_timeout Timeout value of the measurement request
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* in ms.
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* @param pioctl_req Pointer to IOCTL request buffer
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* @param pmeas_rpt Output parameter: Pointer for the resulting
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* measurement report
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*
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* @return
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* - 0 for success
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* - -ETIMEDOUT if the measurement report does not return before
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* the timeout expires
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* - Error return from wlan_prepare_cmd routine otherwise
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*/
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int wlan_meas_util_send_req(mlan_private *pmpriv,
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HostCmd_DS_MEASUREMENT_REQUEST *pmeas_req,
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t_u32 wait_for_resp_timeout,
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pmlan_ioctl_req pioctl_req,
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HostCmd_DS_MEASUREMENT_REPORT *pmeas_rpt)
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{
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static t_u8 auto_dialog_tok;
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wlan_meas_state_t *pmeas_state = &pmpriv->adapter->state_meas;
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int ret;
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ENTER();
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/* If dialogTok was set to 0 or not provided, autoset */
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pmeas_req->dialog_token =
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(pmeas_req->dialog_token ? pmeas_req->dialog_token :
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++auto_dialog_tok);
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/* Check for rollover of the dialog token. Avoid using 0 as a token */
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pmeas_req->dialog_token =
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(pmeas_req->dialog_token ? pmeas_req->dialog_token : 1);
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/*
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* If the request is to pend waiting for the result, set the dialog
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* token of this measurement request in the state structure. The
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* measurement report handling routines can then check the incoming
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* measurement reports for a match with this dialog token.
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*/
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if (wait_for_resp_timeout) {
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pmeas_state->meas_rpt_pend_on = pmeas_req->dialog_token;
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PRINTM(MINFO, "Meas: Req: START Pend on meas #%d\n",
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pmeas_req->dialog_token);
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}
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/* Send the measurement request to the firmware */
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ret = wlan_prepare_cmd(pmpriv, HostCmd_CMD_MEASUREMENT_REQUEST,
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HostCmd_ACT_GEN_SET, 0, (t_void *)pioctl_req,
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(void *)pmeas_req);
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LEAVE();
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return ret;
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}
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/**
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* @brief Prepare the HostCmd_DS_Command structure for a measurement command.
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*
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* Use the Command field to determine if the command being set up is for
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* 11h and call one of the local command handlers accordingly for:
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*
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* - HostCmd_CMD_MEASUREMENT_REQUEST
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* - HostCmd_CMD_MEASUREMENT_REPORT
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*
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* @param pmpriv Private driver information structure
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* @param pcmd_ptr Output parameter: Pointer to the command being prepared
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* for the firmware
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* @param pinfo_buf Void buffer passthrough with data necessary for a
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* specific command type
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*
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* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
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*
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*/
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int wlan_meas_cmd_process(mlan_private *pmpriv, HostCmd_DS_COMMAND *pcmd_ptr,
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const void *pinfo_buf)
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{
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int ret = MLAN_STATUS_SUCCESS;
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ENTER();
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switch (pcmd_ptr->command) {
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case HostCmd_CMD_MEASUREMENT_REQUEST:
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ret = wlan_meas_cmd_request(pmpriv, pcmd_ptr, pinfo_buf);
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break;
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case HostCmd_CMD_MEASUREMENT_REPORT:
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ret = wlan_meas_cmd_get_report(pmpriv, pcmd_ptr);
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break;
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default:
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ret = MLAN_STATUS_FAILURE;
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}
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pcmd_ptr->command = wlan_cpu_to_le16(pcmd_ptr->command);
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pcmd_ptr->size = wlan_cpu_to_le16(pcmd_ptr->size);
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LEAVE();
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return ret;
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}
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/**
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* @brief Handle the command response from the firmware for a measurement
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* command
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*
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* Use the Command field to determine if the command response being
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* is for meas. Call the local command response handler accordingly for:
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*
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* - HostCmd_CMD_802_MEASUREMENT_REQUEST
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* - HostCmd_CMD_802_MEASUREMENT_REPORT
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*
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* @param pmpriv Private driver information structure
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* @param resp HostCmd_DS_COMMAND struct returned from the firmware command
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*
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* @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
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*/
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int wlan_meas_cmdresp_process(mlan_private *pmpriv,
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const HostCmd_DS_COMMAND *resp)
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{
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int ret = MLAN_STATUS_SUCCESS;
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ENTER();
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switch (resp->command) {
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case HostCmd_CMD_MEASUREMENT_REQUEST:
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PRINTM(MINFO, "Meas: Req Resp: Sz=%u, Seq=%u, Ret=%u\n",
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resp->size, resp->seq_num, resp->result);
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break;
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case HostCmd_CMD_MEASUREMENT_REPORT:
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ret = wlan_meas_cmdresp_get_report(pmpriv, resp);
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break;
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default:
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ret = MLAN_STATUS_FAILURE;
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}
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LEAVE();
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return ret;
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}
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