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- pev_cm_slac_param.c
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- /*====================================================================*
- *
- * Copyright (c) 2013 Qualcomm Atheros, Inc.
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted (subject to the limitations
- * in the disclaimer below) provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * * Neither the name of Qualcomm Atheros nor the names of
- * its contributors may be used to endorse or promote products
- * derived from this software without specific prior written
- * permission.
- *
- * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
- * GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
- * COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
- * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *--------------------------------------------------------------------*/
- /*====================================================================*
- *
- * signed pev_cm_slac_param (struct session * session, struct channel * channel, struct message * message);
- *
- * slac.h
- *
- * PEV-HLE broadcasts cm_slac_param requests until at least one
- * matching cm_slac_param confirm is received; matching confirm
- * has the same run identifier; EVSE-HLE returns information to
- * the PEV-HLE;
- *
- * return 0 on success, -1 on error and 1 on timeout;
- *
- * this interaction effectivey synchronizes the PEV-HLE and one
- * or more EVSE-HLEs by initiating the SLAC protocol sequence;
- *
- * MSOUND-TARGET will be FF:FF:FF:FF:FF:FF for SLAC;
- * NUM_SOUNDS will be 8 for SLAC;
- * TIME_OUT will be 10 for SLAC;
- * RESP_TYPE will be 00 for SLAC (???);
- * FORWARDING_STA will be 00:00:00:00:00:00 for SLAC when RESP_TYPE=0;
- * APPLICATION_TYPE will be 0 for SLAC;
- * SECUTITY_TYPE will be 0 for this application;
- * RunID will be that defined by PEV-HLE;
- *
- * send cm_slac_param request then wait up to channel.timeout
- * milliseconds for a cm_slac_param confirm having the same
- * RunID as the request; the application type and security
- * type should be the same as in the request;
- *
- * save the msound target, forwarding station, number of sounds,
- * sounding timeout and response type for use later in the session;
- *
- * the forwarding stations is a vague concept; the specification
- * authors say it should be FF:FF:FF:FF:FF:FF but here, the EVSE-HLE
- * will set it to the PEV MAC;
- *
- *--------------------------------------------------------------------*/
- #ifndef PEV_CM_SLAC_PARAM_SOURCE
- #define PEV_CM_SLAC_PARAM_SOURCE
- #include <string.h>
- #include <errno.h>
- #include "../ether/channel.h"
- #include "../tools/memory.h"
- #include "../tools/error.h"
- #include "../tools/flags.h"
- #include "../iso15118/slac.h"
- signed pev_cm_slac_param (struct session * session, struct channel * channel, struct message * message)
- {
- extern byte const broadcast [ETHER_ADDR_LEN];
- struct cm_slac_param_request * request = (struct cm_slac_param_request *) (message);
- struct cm_slac_param_confirm * confirm = (struct cm_slac_param_confirm *) (message);
- slac_debug (session, 0, __func__, "--> CM_SLAC_PARAM.REQ");
- memset (message, 0, sizeof (* message));
- EthernetHeader (& request->ethernet, broadcast, channel->host, channel->type);
- HomePlugHeader1 (& request->homeplug, HOMEPLUG_MMV, (CM_SLAC_PARAM | MMTYPE_REQ));
- request->APPLICATION_TYPE = session->APPLICATION_TYPE;
- request->SECURITY_TYPE = session->SECURITY_TYPE;
- memcpy (request->RunID, session->RunID, sizeof (request->RunID));
- request->CipherSuite [0] = HTOLE16 ((uint16_t) (session->counter));
- if (sendmessage (channel, message, (ETHER_MIN_LEN - ETHER_CRC_LEN)) <= 0)
- {
- return (slac_debug (session, 1, __func__, CHANNEL_CANTSEND));
- }
- while (readmessage (channel, message, HOMEPLUG_MMV, (CM_SLAC_PARAM | MMTYPE_CNF)) > 0)
- {
- if (! memcmp (session->RunID, confirm->RunID, sizeof (session->RunID)))
- {
- slac_debug (session, 0, __func__, "<-- CM_SLAC_PARAM.CNF");
- if (confirm->APPLICATION_TYPE != session->APPLICATION_TYPE)
- {
- slac_debug (session, session->exit, __func__, "Unexpected APPLICATION_TYPE");
- }
- if (confirm->SECURITY_TYPE != session->SECURITY_TYPE)
- {
- slac_debug (session, session->exit, __func__, "Unexpected SECURITY_TYPE");
- }
- if (_anyset (session->flags, SLAC_COMPARE))
- {
- if (LE16TOH (confirm->CipherSuite) != (uint16_t) (session->counter))
- {
- slac_debug (session, session->exit, __func__, "session->counter mismatch! PEV=(%d) EVSE=(%d)", LE16TOH (confirm->CipherSuite), session->counter);
- }
- }
- #if SLAC_DEBUG
- if (_anyset (session->flags, SLAC_VERBOSE))
- {
- char string [256];
- slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.MSOUND_TARGET %s", HEXSTRING (string, confirm->MSOUND_TARGET));
- slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.NUM_SOUNDS %d", confirm->NUM_SOUNDS);
- slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.TIME_OUT %d", confirm->TIME_OUT);
- slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.RESP_TYPE %d", confirm->RESP_TYPE);
- slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.FORWARDING_STA %s", HEXSTRING (string, confirm->FORWARDING_STA));
- slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.APPLICATION_TYPE %d", confirm->APPLICATION_TYPE);
- slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.SECURITY_TYPE %d", confirm->SECURITY_TYPE);
- slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.RunID %s", HEXSTRING (string, confirm->RunID));
- slac_debug (session, 0, __func__, "CM_SLAC_PARAM.CNF.CipherSuite %d", confirm->CipherSuite);
- }
- #endif
- memcpy (session->FORWARDING_STA, confirm->FORWARDING_STA, sizeof (session->FORWARDING_STA));
- memcpy (session->MSOUND_TARGET, confirm->MSOUND_TARGET, sizeof (session->MSOUND_TARGET));
- session->NUM_SOUNDS = confirm->NUM_SOUNDS;
- session->TIME_OUT = confirm->TIME_OUT;
- session->RESP_TYPE = confirm->RESP_TYPE;
- return (0);
- }
- }
- return (slac_debug (session, 0, __func__, "<-- CM_SLAC_PARAM.CNF ?"));
- }
- #endif
- </pre>
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