Stephen Dawson-Haggerty
adf66f412d
Found a number of problems with the router when compiling on linux * Expected malloc()'ed memory to be zeroed resulting in segfault * IPC_NOWAIT in iplayer loop means incoming traffic will be delayed until outgoing traffic is received. * When configured with two BIP interfaces, broadcast loops ensue because the broacast traffic is not correctly filtered. I think the safest thing to do here is to use the SO_BINDTODEVICE setsockopt.
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/**
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* @file
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* @author Andriy Sukhynyuk, Vasyl Tkhir, Andriy Ivasiv
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* @date 2012
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* @brief Message queue module
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*
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* @section LICENSE
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef MSGQUEUE_H
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#define MSGQUEUE_H
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#include <stdint.h>
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#include <stdbool.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/msg.h>
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#include "bacnet/bacdef.h"
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#include "bacnet/npdu.h"
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extern pthread_mutex_t msg_lock;
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#define INVALID_MSGBOX_ID -1
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typedef int MSGBOX_ID;
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typedef enum {
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DATA = 1,
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SERVICE
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} MSGTYPE;
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typedef enum {
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SHUTDOWN,
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CHG_IP,
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CHG_MAC
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} MSGSUBTYPE;
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typedef struct _message {
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MSGTYPE type;
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MSGBOX_ID origin;
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MSGSUBTYPE subtype;
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void *data;
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/* add timestamp */
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} BACMSG;
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/* specific message type data structures */
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typedef struct _msg_data {
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BACNET_ADDRESS dest;
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BACNET_ADDRESS src;
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uint8_t *pdu;
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uint16_t pdu_len;
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uint8_t ref_count;
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} MSG_DATA;
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MSGBOX_ID create_msgbox(
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);
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/* returns sent byte count */
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bool send_to_msgbox(
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MSGBOX_ID dest,
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BACMSG * msg);
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/* returns received message */
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BACMSG *recv_from_msgbox(
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MSGBOX_ID src,
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BACMSG * msg,
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int flags);
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void del_msgbox(
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MSGBOX_ID msgboxid);
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/* free message data structure */
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void free_data(
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MSG_DATA * data);
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/* check message reference counter and delete data if needed */
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void check_data(
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MSG_DATA * data);
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#endif /* end of MSGQUEUE_H */
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