Connection Release Service | HP UX 11i v2 Networking Software

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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HP UX 11i v2 Networking Software manual Connection Release Service, Message Flow DLS User-Invoked Connection Release

Contents

Dlpi Programmer’s Guide Edition Legal 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 Files Service Interface Data Link Layer Dlpi Connection-mode Service Modes of Communication Data 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, Fddi HP’s Dlsap Address Format for Fibre Channel Dlsap Promiscuous Mode Clariﬁcations Dlpi Services Dlerrorack DlinforeqDlinfoack Dlhpppareq Dlresetreq DlresetindDlresetres Dlresetcon Local Management Services Information Reporting ServiceDlhprawdatareq Dlhprawdataind Attach Service Bind Service Reserved 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 Service Connection Handoff 12 Message Flow Successful Connection Establishment 13 Message Flow Token Retrieval 16 Message Flow Both Primitives are Destroyed by Provider Data Transfer Service 19 Message Flow Normal Data Transfer Connection Release Service 20 Message Flow DLS User-Invoked Connection Release Reset Service 23 Message Flow DLS User-Invoked Connection Reset Connectionless-mode Services Connectionless Data Transfer Raw-mode Services Error Reporting Service XID and Test Service Raw-mode Data Transfer 31 Message Flow XID Service XID and Test Packet Handling 32 Message Flow Test Service An Example 33 Message Flow a Connection-Mode Example Dlpi Primitives Dlpi Primitives Local Management Primitives PPA Initialization/De-initialization Dlhpppareq Dlhpppaack Dlhpppaack Dlinforeq MTU Dlinfoack Dlcsmacd DltpbDltpr Dlmetro Dlchar DlctcaDlfddi Dlother Dlacldls DlhprawdlsDlunknown DLSTYLE1 DLSTYLE2 Dlattachreq DlaccessDlbadppa Dloutstate DldetachreqDlsyserr Dlbindreq Dlinitfailed DlbadaddrDlnotinit Dlbindack Dlunbindreq Dlsubsbindreq Dlpeerbind Dlhierarchicalbind Dlsubsbindack Dltoomany Dlsubsunbindreq Dlenabmultireq Dldisabmultireq Dlnotsupported Dlpromisconreq Dlnotenab Dlpromiscsap DlpromiscphysDlpromiscmulti Dlpromiscoffreq Dlokack Dlerrorack Dlphysaddrreq Dlfactphysaddr Dlcurrphysaddr Dlphysaddrack DlsetphysaddrreqDlphysaddrack Dlphysaddrreq Dlsetphysaddrreq Dlgetstatisticsreq DlgetstatisticsackDlbusy Dlgetstatisticsreq Dlhpmulticastlistreq Dlgetstatisticsack Dlhpmulticastlistack Dlhpmulticastlistack Connectionless-mode Service Primitives Dlunitdatareq Dlbaddata Dlunitdataind Dluderrorind Message is valid in state Dlidle Raw Mode Service Primitives Dlhprawdatareq Dlhprawdataind Dlbadprim Raw Mode Service Primitives Connection-Oriented Dlpi Extensions Connection-mode Service PrimitivesDlhpinforeq Dlhpinfoack Dlhpinforeq Dlhpinfoack Connection-mode Service Primitives Connection-mode Service Primitives Dlhpsetacktoreq Dlhpsetacktoreq Dlhpsetptoreq Dlhpsetptoreq Dlhpsetbusytoreq DlhpsetrejtoreqDlhpsetrejtoreq Dlhpsetsendacktoreq Dlhpsetbusytoreq Dlhpsetsendacktoreq DlhpsetmaxretriesreqDlhpsetmaxretriesreq Dlhpsetackthreshreq DLOUTCONPENDING, Dlinconpending Dlhpsetlocalwinreq Dlhpsetremotewinreq Dlhpclearstatsreq Dlhpsetremotewinreq Dlhpclearstatsreq DlhpsetlocalbusyreqDlhpsetlocalbusyreq Dlhpclearlocalbusyreq Dlhpclearlocalbusyreq Dlconnectreq Dlbadqosparam DlconnectindDlbadqostype 112 Dlconnectres 114 Dlconnectcon DlbadtokenDlbadcorr Dlpending 116 Dltokenreq Dltokenack Dldatareq Dldataind Dldisconnectreq 120 Dldisconnectind Dlresetreq Dlresetind Dlresetres Dlresetcon 126 Primitives to Handle XID and Test Operations Dltestreq Dltestind Dltestauto Chapter 129 Dltestres Dltestcon Dlxidreq Dlxidind Dlxidauto 134 Dlxidres Dlpollfinal Dlxidcon Chapter 137 Dlpi States User Reset Dluserreset Dlresetcon Prov Reset DlprovresetDlresetres Resetres Udqos Pend Dludqos DLDISCON9 Pend PendingDlinconpending DLDISCON11 Chapter 141 142 Sample Programs Connection Mode Longareasize Appendix 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 SAP Appendix 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 establishment 174 Glossary Index