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demo/router/ipmodule.h

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+/**
+* @file
+* @author Andriy Sukhynyuk, Vasyl Tkhir, Andriy Ivasiv
+* @date 2012
+* @brief Datalink IP module
+*
+* @section LICENSE
+*
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to deal in the Software without restriction, including
+* without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to
+* permit persons to whom the Software is furnished to do so, subject to
+* the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*
+*/
+#ifndef UDPMODULE_H
+#define UDPMODULE_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "portthread.h"
+#include "bip.h"
+
+#define MAX_BIP_APDU	1476
+#define MAX_BIP_PDU		(MAX_NPDU + MAX_BIP_APDU)
+#define MAX_BIP_MPDU	(MAX_HEADER + MAX_BIP_PDU)
+/* Yes, we know this is longer than an Ethernet Frame,
+   a UDP payload and an IPv6 packet.
+   Grandfathered in from BACnet Ethernet days,
+   and we can rely on the lower layers of the
+   Ethernet stack to fragment/reassemble the BACnet MPDUs */
+
+typedef struct ip_data {
+    int socket;
+    uint16_t port;
+    struct in_addr local_addr;
+    struct in_addr broadcast_addr;
+    uint8_t *buff;
+    uint16_t max_buff;
+} IP_DATA;
+
+
+void *dl_ip_thread(
+    void *pArgs);
+
+bool dl_ip_init(
+    ROUTER_PORT * port,
+    IP_DATA * data);
+
+int dl_ip_send(
+    IP_DATA * data,
+    BACNET_ADDRESS * dest,
+    uint8_t * pdu,
+    unsigned pdu_len);
+
+int dl_ip_recv(
+    IP_DATA * data,
+    MSG_DATA ** msg,    /* on recieve fill up message */
+    BACNET_ADDRESS * src,
+    unsigned timeout);
+
+void dl_ip_cleanup(
+    IP_DATA * data);
+
+#endif /* end of UDPMODULE_H */