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97 lines
3.6 KiB
97 lines
3.6 KiB
/* rtmp.h, /appletalk/ins, Garth Conboy, 10/29/88 */
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/* Copyright (c) 1988 by Pacer Software Inc., La Jolla, CA */
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/* GC - Initial coding.
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*** Make the PVCS source control system happy:
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$Header$
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$Log$
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***
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RTMP specific declarations.
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*/
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/* RTMP specific data. */
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#define RtmpRequestCommand 1
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#define RtmpDataRequestCommand 2
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#define RtmpEntireDataRequestCommand 3
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#define RtmpRequestDatagramSize 1
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#define RtmpDataMinimumSizeExtended 10
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#define RtmpDataMinimumSizeNonExtended 7
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#define RtmpResponseMaxSize 10
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#define RtmpVersionNumber ((unsigned char)0x82)
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#define RtmpTupleWithRange ((unsigned char)0x80)
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#define RtmpTupleWithoutRange ((unsigned char)0x00)
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#define RtmpExtendedTupleMask 0x80
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#define RtmpNumberOfHopsMask 0x1F
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#define RtmpExtendedTupleSize 6
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/* When trying to find our network number on a non-extended port. */
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#define RtmpRequestTimerInHundreths 10
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#define NumberOfRtmpRequests 30
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#if Iam an AppleTalkRouter
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/* Okay, now we need the actual RTMP routing table. Our entries are hashed by
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target network number and contain the port number used to get to the target
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network, next bridge used to get to the target network, the number of hops
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to that network, and entry state (Good, Suspect, or Bad). Note that with
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AppleTalk phase II, it takes two Validity timers to get from Suspect to Bad,
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so we let an entry go through a PrettyBad state (we won't send these guys
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when the Send timer goes off). */
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typedef enum {Good = 1, Suspect, PrettyBad, Bad} RoutingTableEntryState;
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#define NumberOfRtmpHashBuckets 23
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typedef struct routingTableEntry {
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struct routingTableEntry far *next;
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/* Hashed by first network number,
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overflow buckets. */
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AppleTalkNetworkRange networkRange;
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/* The network range that we
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represent */
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short port; /* Port used to access this
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network range */
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ExtendedAppleTalkNodeNumber nextRouter;
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/* Node number of next router on
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the way to this net range */
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short numberOfHops; /* Hops to get to net */
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RoutingTableEntryState entryState; /* Good, bad, or ugly... */
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ZoneList zoneList; /* Valid zones for this net */
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Boolean zoneListValid; /* Is the above complete? */
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} far *RoutingTableEntry;
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#ifndef InitializeData
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extern
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#endif
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RoutingTableEntry routingTable[NumberOfRtmpHashBuckets];
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/* To decrease the odds of having to do a scan of the routing tables to
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find where to route a packet, we keep a cache of "recently used routes".
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This cache is checked before we use the "first network number" hash and
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before we resort of a full scan of the routing tables. The size of this
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cache may want to be increased to get a proportional increase in
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"hit rate". */
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#define NumberOfRecentRouteBuckets 31
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#ifndef InitializeData
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extern
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#endif
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RoutingTableEntry recentRoutes[NumberOfRecentRouteBuckets];
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#endif
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/* RTMP timer values: */
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#define RtmpSendTimerSeconds 10
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#define RtmpValidityTimerSeconds 20
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#define RtmpAgingTimerSeconds 50
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