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/* Copyright (C) 2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef TransporterDefinitions_H
#define TransporterDefinitions_H
#include <ndb_global.h>
#include <kernel_types.h>
#include <NdbOut.hpp>
/**
* The maximum number of transporters allowed
* A maximum is needed to be able to allocate the array of transporters
*/
const int MAX_NTRANSPORTERS = 128;
/**
* The sendbuffer limit after which the contents of the buffer is sent
*/
const int TCP_SEND_LIMIT = 64000;
enum SendStatus {
SEND_OK = 0,
SEND_BLOCKED = 1,
SEND_DISCONNECTED = 2,
SEND_BUFFER_FULL = 3,
SEND_MESSAGE_TOO_BIG = 4,
SEND_UNKNOWN_NODE = 5
};
/**
* Protocol6 Header +
* (optional signal id) + (optional checksum) + (signal data)
*/
//const Uint32 MAX_MESSAGE_SIZE = (12+4+4+(4*25));
const Uint32 MAX_MESSAGE_SIZE = (12+4+4+(4*25)+(3*4)+4*4096);
/**
* TransporterConfiguration
*
* used for setting up a transporter. the union member specific is for
* information specific to a transporter type.
*/
struct TransporterConfiguration {
Int32 s_port; // negative port number implies dynamic port
const char *remoteHostName;
const char *localHostName;
NodeId remoteNodeId;
NodeId localNodeId;
NodeId serverNodeId;
bool checksum;
bool signalId;
bool isMgmConnection; // is a mgm connection, requires transforming
union { // Transporter specific configuration information
struct {
Uint32 sendBufferSize; // Size of SendBuffer of priority B
Uint32 maxReceiveSize; // Maximum no of bytes to receive
} tcp;
struct {
Uint32 shmKey;
Uint32 shmSize;
int signum;
} shm;
struct {
Uint32 prioASignalSize;
Uint32 prioBSignalSize;
} ose;
struct {
Uint32 sendLimit; // Packet size
Uint32 bufferSize; // Buffer size
Uint32 nLocalAdapters; // 1 or 2, the number of adapters on local host
Uint32 remoteSciNodeId0; // SCInodeId for adapter 1
Uint32 remoteSciNodeId1; // SCInodeId for adapter 2
} sci;
};
};
struct SignalHeader {
Uint32 theVerId_signalNumber; // 4 bit ver id - 16 bit gsn
Uint32 theReceiversBlockNumber; // Only 16 bit blocknum
Uint32 theSendersBlockRef;
Uint32 theLength;
Uint32 theSendersSignalId;
Uint32 theSignalId;
Uint16 theTrace;
Uint8 m_noOfSections;
Uint8 m_fragmentInfo;
}; /** 7x4 = 28 Bytes */
struct LinearSectionPtr {
Uint32 sz;
Uint32 * p;
};
struct SegmentedSectionPtr {
Uint32 sz;
Uint32 i;
struct SectionSegment * p;
SegmentedSectionPtr() {}
SegmentedSectionPtr(Uint32 sz_arg, Uint32 i_arg,
struct SectionSegment *p_arg)
:sz(sz_arg), i(i_arg), p(p_arg)
{}
void setNull() { p = 0;}
bool isNull() const { return p == 0;}
};
class NdbOut & operator <<(class NdbOut & out, SignalHeader & sh);
#endif // Define of TransporterDefinitions_H
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