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392 lines
12 KiB
392 lines
12 KiB
/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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routing\inc\rtm.h
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Abstract:
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Router Manager private interface for Routing Table Manager DLL
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Author:
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Vadim Eydelman
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Revision History:
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--*/
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#ifndef _ROUTING_RMRTM
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#define _ROUTING_RMRTM
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// Two protocol families are currently supported (IP, IPX)
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// It should be enough to modify this constant to support additional
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// protocol families (from the RTM's point of view). Up to 256 families
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// can be supported (if somebody needs more (???!!!), the next constant should
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// be modified to free more low order bits for use by protocol family constants)
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//
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// Changed the number of protocol families from 2
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// to 1 (as we support only IPX). IP and other
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// future address families are supported by RTMv2.
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//
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#define RTM_NUM_OF_PROTOCOL_FAMILIES 1
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// Tag that rtm ors in Protocol Family field of the handles it
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// exports to clients for validation purposes
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#define RTM_CLIENT_HANDLE_TAG ('RTM'<<8)
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/*++
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*******************************************************************
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N E T W O R K _ N U M B E R _ C M P _ F U N C
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Routine Description:
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Compares two network numbers and returns result that can be used for
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route sorting
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Arguments:
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Net1,Net2 - pointers to protocol family dependent network number structures
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to be compared
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Return Value:
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<0 - Net2 follows Net1
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>0 - Net1 follows Net2
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=0 - Net1==Net2
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*******************************************************************
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--*/
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typedef
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INT
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(*PNETWORK_NUMBER_CMP_FUNC) (
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PVOID Net1,
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PVOID Net2
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);
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/*++
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*******************************************************************
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N E X T _ H O P _ A D D R E S S _ C M P _ F U N C
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Routine Description:
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Compares next hop addresses of two routes and returns result that can be used for
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route sorting
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Arguments:
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Route1,Route2 - pointers to protocol family dependent route structures whose
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next hop addresses are to be compared
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Return Value:
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<0 - Route2 should follow Route1 if sorted by next hop address
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>0 - Route1 should follow Route2 if sorted by next hop address
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=0 - Route1 has same next hop address as Route2
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*******************************************************************
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--*/
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typedef
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INT
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(*PNEXT_HOP_ADDRESS_CMP_FUNC) (
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PVOID Route1,
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PVOID Route2
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);
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/*++
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*******************************************************************
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F A M I L Y _ S P E C I F I C _ D A T A _ C M P _ F U N C
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Routine Description:
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Compares family specific data fields of two routes and returns if
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the are equal
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Arguments:
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Route1,Route2 - pointers to protocol family dependent route structures whose
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protocol family specific data fields are to be compared
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Return Value:
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TRUE - protocol family specific data fields of Route1 and Route2 are
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equivalent
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FALSE - protocol family specific data fields of Route1 and Route2 are
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different
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*******************************************************************
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--*/
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typedef
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BOOL
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(*PFAMILY_SPECIFIC_DATA_CMP_FUNC) (
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PVOID Route1,
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PVOID Route2
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);
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/*++
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*******************************************************************
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R O U T E _ M E T R I C _ C M P _ F U N C
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Routine Description:
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Compares two routes and returns result that identifies the
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better route
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Arguments:
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Route1,Route2 - pointers to protocol family dependent route structures whose
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parameters are to be compared
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Return Value:
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<0 - Route1 is better than Route2
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>0 - Route2 is better than Route1
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=0 - Route1 is as good as Route2
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*******************************************************************
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--*/
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typedef
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INT
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(*PROUTE_METRIC_CMP_FUNC) (
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PVOID Route1,
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PVOID Route2
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);
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/*++
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*******************************************************************
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R O U T E _ H A S H _ F U N C
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Routine Description:
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Retuns value that can be used for route hashing by network number
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Arguments:
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Net - network number to be used for hashing
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Return Value:
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Hash value
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*******************************************************************
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--*/
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typedef
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INT
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(*PROUTE_HASH_FUNC) (
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PVOID Net
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);
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/*++
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*******************************************************************
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R O U T E _ V A L I D A T E _ F U N C
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Routine Description:
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Validates the data in the route structure and possibly updates
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some of them. This routine is called each time the new route
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is added to tha table or any of parameters of an existing route
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changes
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Arguments:
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Route - pointer to protocol family dependent route structure to
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be validated
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Return Value:
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NO_ERROR - route was successfully validated
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ERROR_INVALID_PARAMETER - route structure is invalid, RTM will reject
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client's request to add or change the route
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*******************************************************************
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--*/
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typedef
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DWORD
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(*PROUTE_VALIDATE_FUNC) (
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PVOID Route
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);
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/*++
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*******************************************************************
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R O U T E _ C H A N G E _ C A L L B A C K
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Routine Description:
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Gets called whenever the best route to some desination network changes
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(intended to be used by the protocol family manager to notify kernel mode
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forwarders of route changes)
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Arguments:
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Flags - identifies what kind of change caused the call and what
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information is provided in the route buffers:
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RTM_ROUTE_ADDED - first route was added for a destination network,
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CurBestRoute is contains added route info
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RTM_ROUTE_DELETED - the only route available for a destination
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network was deleted, PrevBestRoute contains deleted
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route info
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RTM_ROUTE_CHANGED - there was a change in any of the following
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parameters of the BEST route to a destination
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network:
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RoutingProtocol,
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InterfaceID,
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Metric,
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NextHopAddress,
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FamilySpecificData.
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PrevBestRoute contains the route info as it was
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before the change, CurBestRoute contains current
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best route info.
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Note that the route change message can be generated
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both as result of protocol adding/deleting the route
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that becomes/was the best and changing best route parameters
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such that the route becomes/no longer is the best route.
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CurBestRoute - current best route info (if any)
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PrevBestRoute - previous best route info (if any)
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Return Value:
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None
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*******************************************************************
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--*/
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typedef
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VOID
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(*PROUTE_CHANGE_CALLBACK) (
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DWORD Flags,
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PVOID CurBestRoute,
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PVOID PrevBestRoute
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);
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typedef struct _RTM_PROTOCOL_FAMILY_CONFIG {
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ULONG RPFC_MaxTableSize; // Size of address space reserved
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// for the table
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INT RPFC_HashSize; // Size of hash table
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INT RPFC_RouteSize; // Size of route structure
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PNETWORK_NUMBER_CMP_FUNC RPFC_NNcmp;
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PNEXT_HOP_ADDRESS_CMP_FUNC RPFC_NHAcmp;
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PFAMILY_SPECIFIC_DATA_CMP_FUNC RPFC_FSDcmp;
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PROUTE_METRIC_CMP_FUNC RPFC_RMcmp;
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PROUTE_HASH_FUNC RPFC_Hash;
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PROUTE_VALIDATE_FUNC RPFC_Validate;
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PROUTE_CHANGE_CALLBACK RPFC_Change;
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} RTM_PROTOCOL_FAMILY_CONFIG, *PRTM_PROTOCOL_FAMILY_CONFIG;
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/*++
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*******************************************************************
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R t m C r e a t e R o u t e T a b l e
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Routine Description:
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Create route table for protocol family
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Arguments:
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ProtocolFamily - index that identifies protocol family
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Config - protocol family table configuration parameters
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Return Value:
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NO_ERROR - table was created ok
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ERROR_INVALID_PARAMETER - protocol family is out of range supported by the RTM
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ERROR_ALREDY_EXISTS - protocol family table already exists
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ERROR_NOT_ENOUGH_MEMORY - could not allocate memory to perform
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the operation
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ERROR_NO_SYSTEM_RESOURCES - not enough resources to perform the operation,
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try again later
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*******************************************************************
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--*/
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DWORD
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RtmCreateRouteTable (
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IN DWORD ProtocolFamily,
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IN PRTM_PROTOCOL_FAMILY_CONFIG Config
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);
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/*++
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*******************************************************************
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R t m D e l e t e R o u t e T a b l e
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Routine Description:
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Dispose of all resources allocated for the route table
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Arguments:
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ProtocolFamily - index that identifies protocol family
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Return Value:
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NO_ERROR - table was deleted ok
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ERROR_INVALID_PARAMETER - no table to delete
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*******************************************************************
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--*/
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DWORD
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RtmDeleteRouteTable (
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DWORD ProtocolFamily
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);
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/*++
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*******************************************************************
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R t m B l o c k S e t R o u t e E n a b l e
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Routine Description:
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Disables/Reenables all routes in subset specified by enumeration
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flags and corresponding criteria. This operation can only be performed
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by the registered client and applies only to routes added by this
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client.
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Route change messages will be generated for disabled/reenabled routes that
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were/became the best.
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Disabled routes are invisible for route queries, but could still be
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maintained by the RTM itself or routing protocol handler that added
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these routes (add, delete, and aging mechanisms still apply)
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Arguments:
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ClientHandle - handle that identifies the client and routing protocol
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of routes to be disabled/reenabled
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EnumerationFlags - further limit subset of routes being enabled to only
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those that have same values in the fields
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specified by the flags as in CriteriaRoute
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Note that only RTM_ONLY_THIS_NETWORK and RTM_ONLY_THIS_INTERFACE
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can be used (RTM_ONLY_BEST_ROUTES does not apply because best
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route designation is adjusted as routes are enabled/disabled and
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all routes will be affected anyway)
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CriteriaRoute - protocol family dependent structure (RTM_??_ROUTE) with
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set values in fields that correspond to EnumerationFlags
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Enable - FALSE: disable, TRUE: reenable
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Return Value:
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NO_ERROR - routes were disabled/reenabled ok
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ERROR_NO_ROUTES - no routes exist that match specified criteria
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ERROR_INVALID_HANDLE - client handle is not a valid RTM handle
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ERROR_NOT_ENOUGH_MEMORY - could not allocate memory to perform
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the operation
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ERROR_NO_SYSTEM_RESOURCES - not enough resources to perform the operation,
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try again later
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*******************************************************************
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--*/
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DWORD WINAPI
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RtmBlockSetRouteEnable (
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IN HANDLE ClientHandle,
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IN DWORD EnumerationFlags,
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IN PVOID CriteriaRoute,
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IN BOOL Enable
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);
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#define RtmBlockDisableRoutes(Handle,Flags,CriteriaRoute) \
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RtmBlockSetRouteEnable(Handle,Flags,CriteriaRoute,FALSE)
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#define RtmBlockReenableRoutes(Handle,Flags,CriteriaRoute) \
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RtmBlockSetRouteEnable(Handle,Flags,CriteriaRoute,TRUE)
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// Use this flags in enumeration methods to enumerate disabled routes
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#define RTM_INCLUDE_DISABLED_ROUTES 0x40000000
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/*++
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*******************************************************************
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R t m B l o c k C o n v e r t R o u t e s T o S t a t i c
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Routine Description:
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Converts all routes as specified by enumeration flags to routes of
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static protocol (as defined by StaticClientHandle).
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No route change messages are generated as the result of this operation.
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This functionality is normally used only by Router Manager for a specific
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protocol family
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Arguments:
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ClientHandle - handle that identifies static protocol client
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EnumerationFlags - limit subset of routes being converted to only
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those that have same values in the fields
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specified by the flags as in CriteriaRoute
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CriteriaRoute - protocol family dependent structure (RTM_??_ROUTE) with
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set values in fields that correspond to EnumerationFlags
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Return Value:
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NO_ERROR - routes were converted ok
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ERROR_NO_ROUTES - no routes exist that match specified criteria
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ERROR_INVALID_HANDLE - client handle is not a valid RTM handle
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ERROR_NOT_ENOUGH_MEMORY - could not allocate memory to perform
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the operation
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ERROR_NO_SYSTEM_RESOURCES - not enough resources to perform the operation,
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try again later
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*******************************************************************
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--*/
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DWORD WINAPI
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RtmBlockConvertRoutesToStatic (
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IN HANDLE ClientHandle,
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IN DWORD EnumerationFlags,
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IN PVOID CriteriaRoute
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);
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#endif
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