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master/datagram_pair.h
author Patrick Bruenn <p.bruenn@beckhoff.com>
Tue, 12 Apr 2016 11:17:36 +0200
branchstable-1.5
changeset 2654 b3f6b3e5ef29
parent 2522 ec403cf308eb
permissions -rw-r--r--
devices/ccat: revert "limit rx processing to one frame per poll"

revert "limit rx processing to one frame per poll", which caused etherlab
frame timeouts in setups with more than one frame per cycle.
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/******************************************************************************
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 *
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 *  $Id$
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 *
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 *  Copyright (C) 2006-2012  Florian Pose, Ingenieurgemeinschaft IgH
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 *
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 *  This file is part of the IgH EtherCAT Master.
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 *
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 *  The IgH EtherCAT Master is free software; you can redistribute it and/or
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 *  modify it under the terms of the GNU General Public License version 2, as
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 *  published by the Free Software Foundation.
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 *
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 *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
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 *  Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License along
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 *  with the IgH EtherCAT Master; if not, write to the Free Software
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 *
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 *  ---
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 *
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 *  The license mentioned above concerns the source code only. Using the
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 *  EtherCAT technology and brand is only permitted in compliance with the
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 *  industrial property and similar rights of Beckhoff Automation GmbH.
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 *
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 *****************************************************************************/
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/**













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   \file













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   EtherCAT datagram pair structure.













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*/













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/*****************************************************************************/













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#ifndef __EC_DATAGRAM_PAIR_H__













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#define __EC_DATAGRAM_PAIR_H__













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#include <linux/list.h>













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#include "globals.h"













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#include "datagram.h"













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/*****************************************************************************/













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/** Domain datagram pair.













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 */













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typedef struct {













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    struct list_head list; /**< List header. */








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    ec_domain_t *domain; /**< Parent domain. */








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    ec_datagram_t datagrams[EC_MAX_NUM_DEVICES]; /**< Datagrams.  */













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#if EC_MAX_NUM_DEVICES > 1








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    uint8_t *send_buffer;








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#endif








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    unsigned int expected_working_counter; /**< Expectord working conter. */








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} ec_datagram_pair_t;













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/*****************************************************************************/













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int ec_datagram_pair_init(ec_datagram_pair_t *, ec_domain_t *, uint32_t,













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        uint8_t *, size_t, const unsigned int []);








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void ec_datagram_pair_clear(ec_datagram_pair_t *);













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uint16_t ec_datagram_pair_process(ec_datagram_pair_t *, uint16_t[]);








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/*****************************************************************************/













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#endif













etherlabmaster