csu3_am335x/EVSE/GPL/plc-utils.LNX.2.1.20/source/plc/DeviceIdent.c

/*====================================================================*
*
*   Copyright (c) 2013 Qualcomm Atheros, Inc.
*
*   All rights reserved.
*
*====================================================================*/

/*====================================================================*
 *
 *   signed DeviceIdent (struct plc * plc);
 *
 *   plc.h
 *
 *   This plugin for program plc reads the first block of a device
 *   PIB using VS_RD_MOD and updates the plc structure with device
 *   network identity information, including MAC, DAK and NMK;
 *
 *   Contributor(s):
 *      Charles Maier <cmaier@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

#ifndef DEVICEIDENT_SOURCE
#define DEVICEIDENT_SOURCE

#include <string.h>

#include "../plc/plc.h" 
#include "../tools/error.h"
#include "../tools/flags.h"
#include "../tools/memory.h"
#include "../pib/pib.h"

signed DeviceIdent (struct plc * plc)

{
	struct channel * channel = (struct channel *) (plc->channel);
	struct message * message = (struct message *) (plc->message);

#ifndef __GNUC__
#pragma pack (push,1)
#endif

	struct __packed vs_rd_mod_request
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MODULEID;
		uint8_t MACCESS;
		uint16_t MLENGTH;
		uint32_t MOFFSET;
		uint8_t MSECRET [16];
	}
	* request = (struct vs_rd_mod_request *) (message);
	struct __packed vs_rd_mod_confirm
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MSTATUS;
		uint8_t RES [3];
		uint8_t MODULEID;
		uint8_t RESERVED;
		uint16_t MLENGTH;
		uint32_t MOFFSET;
		uint32_t MCHKSUM;
		struct simple_pib IDENT;
	}
	* confirm = (struct vs_rd_mod_confirm *) (message);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	memset (message, 0, sizeof (* message));
	EthernetHeader (& request->ethernet, channel->peer, channel->host, channel->type);
	QualcommHeader (& request->qualcomm, 0, (VS_RD_MOD | MMTYPE_REQ));
	plc->packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
	request->MODULEID = VS_MODULE_PIB;
	request->MLENGTH = HTOLE16 (sizeof (confirm->IDENT));
	request->MOFFSET = 0;
	if (SendMME (plc) <= 0)
	{
		error (1, errno, CHANNEL_CANTSEND);
	}
	while (ReadMME (plc, 0, (VS_RD_MOD | MMTYPE_CNF)) <= 0)
	{
		plc->flags |= PLC_BAILOUT;
		Failure (plc, PLC_NODETECT);
	}
	if (confirm->MSTATUS)
	{
		Failure (plc, PLC_WONTDOIT);
	}
	memcpy (plc->MAC, confirm->IDENT.MAC, sizeof (plc->MAC));
	memcpy (plc->DAK, confirm->IDENT.DAK, sizeof (plc->DAK));
	memcpy (plc->NMK, confirm->IDENT.NMK, sizeof (plc->NMK));
	return (0);
}

#endif