HP UX 11i v2 Networking Software manual Connection Release Service

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Introduction to DLPI

DLPI Services

Connection Release Service

The connection release service provides for the DLS users or the DLS provider to initiate the connection release. Connection release is an abortive operation and any data in transit (has not been delivered to the DLS user) may be discarded.

DL_DISCONNECT_REQ requests that a connection be released.

DL_DISCONNECT_IND informs the DLS user that a connection has been released. Normally, one DLS user requests disconnection and the DLS provider issues an indication of the ensuing release to the other DLS user, as illustrated by the message flow in Figure 1-20.

Figure 1-20 Message Flow: DLS User-Invoked Connection Release

DL_DISCONNECT request

DL_OK acknowledge

DL_DISCONNECT indication

Figure 1-21 illustrates that when two DLS users independently invoke the connection release service, neither received a

DL_DISCONNECT_IND.

Figure 1-21 Message Flow: Simultaneous DLS User Invoked Connection Release

DL_DISCONNECT request

DL_OK acknowledge

DL_DISCONNECT request

DL_OK acknowledge

Figure 1-22 illustrates that when the DLS provider and the local DLS user simultaneously invoke the connection release service, the remote DLS user receives a DL_DISCONNECT_IND.

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Chapter 1

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Contents Dlpi Programmer’s Guide EditionLegal Notices Page Page Contents Contents Contents Sample Programs Printing History Page Preface Appendix a Sample ProgramsPage Introduction to Dlpi Introduction to Dlpi HP Dlpi Features Device File Format Header FilesService Interface Data Link LayerDlpi Connection-mode Service Modes of CommunicationData Link Layer Dlpi Addressing Connectionless-mode ServicePhysical Attachment Identification HP PPA Format Data Link User Identification HP’s Dlsap Address Format 802.3, Ethernet, Token Ring, FddiHP’s Dlsap Address Format for Fibre Channel Dlsap Promiscuous Mode Clarifications Dlpi Services Dlerrorack DlinforeqDlinfoack DlhpppareqDlresetreq DlresetindDlresetres DlresetconLocal Management Services Information Reporting ServiceDlhprawdatareq DlhprawdataindAttach Service Bind ServiceReserved IEEESAPS/Ethertypes BindingSnap Message Flow Binding a Stream to a Dlsap Message Flow Enabling a Specific Multicast Address on a Connection-mode Services Connection Establishment ServiceConnection Handoff 12 Message Flow Successful Connection Establishment13 Message Flow Token Retrieval 16 Message Flow Both Primitives are Destroyed by Provider Data Transfer Service 19 Message Flow Normal Data TransferConnection Release Service 20 Message Flow DLS User-Invoked Connection ReleaseReset Service 23 Message Flow DLS User-Invoked Connection Reset Connectionless-mode Services Connectionless Data TransferRaw-mode Services Error Reporting ServiceXID and Test Service Raw-mode Data Transfer31 Message Flow XID Service XID and Test Packet Handling32 Message Flow Test Service An Example33 Message Flow a Connection-Mode Example Dlpi Primitives Dlpi Primitives Local Management Primitives PPA Initialization/De-initializationDlhpppareq Dlhpppaack Dlhpppaack Dlinforeq MTUDlinfoack Dlcsmacd DltpbDltpr DlmetroDlchar DlctcaDlfddi DlotherDlacldls DlhprawdlsDlunknown DLSTYLE1 DLSTYLE2Dlattachreq DlaccessDlbadppa Dloutstate DldetachreqDlsyserr Dlbindreq Dlinitfailed DlbadaddrDlnotinit Dlbindack Dlunbindreq Dlsubsbindreq Dlpeerbind DlhierarchicalbindDlsubsbindack DltoomanyDlsubsunbindreq Dlenabmultireq Dldisabmultireq DlnotsupportedDlpromisconreq DlnotenabDlpromiscsap DlpromiscphysDlpromiscmulti Dlpromiscoffreq Dlokack Dlerrorack Dlphysaddrreq Dlfactphysaddr Dlcurrphysaddr Dlphysaddrack DlsetphysaddrreqDlphysaddrack DlphysaddrreqDlsetphysaddrreq Dlgetstatisticsreq DlgetstatisticsackDlbusy DlgetstatisticsreqDlhpmulticastlistreq DlgetstatisticsackDlhpmulticastlistack Dlhpmulticastlistack Connectionless-mode Service Primitives DlunitdatareqDlbaddata Dlunitdataind Dluderrorind Message is valid in state Dlidle Raw Mode Service Primitives DlhprawdatareqDlhprawdataind DlbadprimRaw Mode Service Primitives Connection-Oriented Dlpi Extensions Connection-mode Service PrimitivesDlhpinforeq Dlhpinfoack DlhpinforeqDlhpinfoack Connection-mode Service Primitives Connection-mode Service Primitives Dlhpsetacktoreq DlhpsetacktoreqDlhpsetptoreq DlhpsetptoreqDlhpsetbusytoreq DlhpsetrejtoreqDlhpsetrejtoreq Dlhpsetsendacktoreq DlhpsetbusytoreqDlhpsetsendacktoreq DlhpsetmaxretriesreqDlhpsetmaxretriesreq Dlhpsetackthreshreq DLOUTCONPENDING, DlinconpendingDlhpsetlocalwinreq Dlhpsetremotewinreq Dlhpclearstatsreq DlhpsetremotewinreqDlhpclearstatsreq DlhpsetlocalbusyreqDlhpsetlocalbusyreq Dlhpclearlocalbusyreq DlhpclearlocalbusyreqDlconnectreq Dlbadqosparam DlconnectindDlbadqostype 112 Dlconnectres 114 Dlconnectcon DlbadtokenDlbadcorr Dlpending116 Dltokenreq DltokenackDldatareq Dldataind Dldisconnectreq120 Dldisconnectind Dlresetreq Dlresetind Dlresetres Dlresetcon 126 Primitives to Handle XID and Test Operations DltestreqDltestind DltestautoChapter 129 Dltestres Dltestcon Dlxidreq Dlxidind Dlxidauto134 Dlxidres DlpollfinalDlxidcon Chapter 137 Dlpi States User Reset Dluserreset Dlresetcon Prov Reset DlprovresetDlresetres Resetres Udqos Pend DludqosDLDISCON9 Pend PendingDlinconpending DLDISCON11Chapter 141 142 Sample Programs Connection Mode LongareasizeAppendix a 145 146 Appendix a 147 148 Appendix a 149 150 Appendix a 151 152 Appendix a 153 154 Appendix a 155 Connectionless Mode Snap SAPAppendix a 157 158 Appendix a 159 160 Appendix a 161 162 Appendix a 163 164 Appendix a 165 166 Raw Mode 168 Appendix a 169 170 Appendix a 171 Raw Mode 172 Glossary Connection establishment174 Glossary Index
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