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Do not send repeatedly LSSU when MTP2 goes out of service. 

git-svn-id: http://yate.null.ro/svn/yate/trunk@2350 acf43c95-373e-0410-b603-e72c3f656dc1
This commit is contained in:
paulc 2008-11-18 18:55:48 +00:00
parent 14830eb0ba
commit 4c2136553a
1 changed files with 7 additions and 6 deletions
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13
libs/ysig/layer2.cpp
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@ -249,6 +249,7 @@ bool SS7MTP2::control(Operation oper, NamedList* params)
case Pause:
m_status = OutOfService;
abortAlignment();
transmitLSSU();
return true;
case Resume:
if (aligned())
@ -488,12 +489,11 @@ bool SS7MTP2::receivedPacket(const DataBlock& packet)
bool fib = (buf[1] & 0x80) != 0;
// lock the object as we modify members
lock();
XDebug(this,DebugAll,"got bsn=%u/%d fsn=%u/%d local bsn=%u/%d fsn=%u/%d [%p]",
bsn,bib,fsn,fib,m_bsn,m_bib,m_fsn,m_fib,this);
unsigned char diff = 0;
// sequence control as explained by Q.703 5.2.2
unsigned char diff = (fsn - m_bsn) & 0x7f;
XDebug(this,DebugAll,"got bsn=%u/%d fsn=%u/%d local bsn=%u/%d fsn=%u/%d diff=%u len=%u [%p]",
bsn,bib,fsn,fib,m_bsn,m_bib,m_fsn,m_fib,diff,len,this);
if (aligned()) {
// sequence control as explained by Q.703 5.2.2
diff = (fsn - m_bsn) & 0x7f;
// received FSN should be only 1 ahead of last we handled
if (diff > 1) {
if (diff < 64)
@ -662,11 +662,12 @@ bool SS7MTP2::transmitLSSU(unsigned int status)
}
// lock the object so we can safely use member variables
lock();
bool repeat = m_fillLink && (m_status != OutOfService);
buf[0] = m_bib ? m_bsn | 0x80 : m_bsn;
buf[1] = m_fib ? m_fsn | 0x80 : m_fsn;
DataBlock packet(buf,buf[2]+3,false);
XDebug(this,DebugAll,"Transmit LSSU with status %s",statusName(buf[3],true));
bool ok = transmitPacket(packet,m_fillLink,SignallingInterface::SS7Lssu);
bool ok = transmitPacket(packet,repeat,SignallingInterface::SS7Lssu);
m_fillTime = Time::now() + (1000 * m_fillIntervalMs);
unlock();
packet.clear(false);