HP UX 11i v2 Networking Software manual Connection-mode Service Primitives, Dlhpinforeq

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DLPI Primitives

Connection-mode Service Primitives

Connection-mode Service Primitives

This section describes the service primitives that support the connection-mode service of the data link layer. These primitives support the establishment of connections, connection-mode data transfer, and connection release services.

In the connection establishment model, the calling DLS user initiates a request for a connection, and the called DLS user receives each request and either accepts or rejects it. In the simplest form, the called DLS user is passed a connect indication and the DLS provider holds any subsequent indications until a response for the current outstanding indication is received. At most one connect indication is outstanding at any time.

DLPI also enables a called DLS user to multi-thread connect indications and responses. The DLS provider will pass all connect indications to the called DLS user (up to some pre-established limit as set by DL_BIND_REQ and DL_BIND_ACK). The called DLS user may then respond to the requests in any order.

To support multi-threading, a correlation value is needed to associate responses with the appropriate connect indication. A correlation value is contained in each DL_CONNECT_IND, and the DLS user must use this value in the DL_CONNECT_RES or DL_DISCONNECT_REQ primitive used to accept or reject the connect request.

Once a connection has been accepted or rejected, the correlation value has no meaning to a DLS user. The DLS provider may reuse the correlation value in another DL_CONNECT_IND.

Connection-Oriented DLPI Extensions

These primitives are only valid on connection-oriented DLPI STREAMS. Connection-oriented DLPI streams are those on which a DL_BIND_REQ with dl_service_mode set to DL_CODLS has been done.

DL_HP_INFO_REQ

Requests the DLS provider to provide information on the state of the connection on a DLPI stream.

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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 Dlinfoack DlerrorackDlinforeq DlhpppareqDlresetres DlresetreqDlresetind DlresetconDlhprawdatareq Local Management ServicesInformation Reporting Service 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 Dltpr DlcsmacdDltpb DlmetroDlfddi DlcharDlctca 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 DlphysaddrackDlsetphysaddrreq DlphysaddrreqDlsetphysaddrreq Dlbusy DlgetstatisticsreqDlgetstatisticsack 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 Dlbadcorr DlconnectconDlbadtoken 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 Dlresetres Resetres User Reset DluserresetDlresetcon Prov Reset Dlprovreset Udqos Pend DludqosDlinconpending DLDISCON9Pend Pending 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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