HP UX 11i v2 Networking Software manual XID and Test Packet Handling, Message Flow XID Service

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Introduction to DLPI

DLPI Services

DLS provider sends up an XID or TEST indication respectively to the DLS user. The DLS user must respond with an XID or TEST response primitive.

If the DLS user requested automatic handling of the XID or TEST response, at bind time, the DLS provider will send up an error acknowledgment on receiving an XID or TEST request. Also, no indications will be generated to the DLS user on receiving XID or TEST frames from the remote side.

XID and TEST Packet Handling

XID and TEST packets are handled differently on connection oriented streams than they are on connectionless streams. On connectionless streams, XID and TEST packets may be sent and received by any stream at any time after binding. On connection oriented streams, XID and TEST packets may be sent and received at any time after binding by streams specifying a non- zero dl_max_conind in the DL_BIND_REQ. Connection oriented streams which specify a zero dl_max_conind in the DL_BIND_REQ will only receive XID and TEST packets after a connection has been established.

LLC Type 2 monitors XID packets sent and received on connection oriented streams. If the stream has a connection established, LLC Type 2 will set the local and remote receive window sizes to those speciﬁed in the XID packets.

The normal ﬂow of message is illustrated in Figure 1-31 and Figure 1-32.

Figure 1-31 Message Flow: XID Service

DL_XID request

DL_XID confirm

DL_XID indication

DL_XID response

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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 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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