for (j = 0; (Addr1[i] & Bitmask) == (Addr2[i] & Bitmask); j++)
Bitmask >>= 1;
- return 8 * i + j;
-}
-
-
-BOOLEAN HasPrefix(
- PIP_ADDRESS Address,
- PIP_ADDRESS Prefix,
- UINT Length)
-/*
- * FUNCTION: Determines wether an address has an given prefix
- * ARGUMENTS:
- * Address = Pointer to address to use
- * Prefix = Pointer to prefix to check for
- * Length = Length of prefix
- * RETURNS:
- * TRUE if the address has the prefix, FALSE if not
- * NOTES:
- * The two addresses must be of the same type
- */
-{
- PUCHAR pAddress = (PUCHAR)&Address->Address;
- PUCHAR pPrefix = (PUCHAR)&Prefix->Address;
-
- TI_DbgPrint(DEBUG_ROUTER, ("Called. Address (0x%X) Prefix (0x%X) Length (%d).\n", Address, Prefix, Length));
-
-#if 0
- TI_DbgPrint(DEBUG_ROUTER, ("Address (%s) Prefix (%s).\n",
- A2S(Address), A2S(Prefix)));
-#endif
-
- /* Check that initial integral bytes match */
- while (Length > 8) {
- if (*pAddress++ != *pPrefix++)
- return FALSE;
- Length -= 8;
- }
-
- /* Check any remaining bits */
- if ((Length > 0) && ((*pAddress >> (8 - Length)) != (*pPrefix >> (8 - Length))))
- return FALSE;
-
- return TRUE;
-}
-
-
-PNET_TABLE_ENTRY RouterFindBestNTE(
- PIP_INTERFACE Interface,
- PIP_ADDRESS Destination)
-/*
- * FUNCTION: Checks all on-link prefixes to find out if an address is on-link
- * ARGUMENTS:
- * Interface = Pointer to interface to use
- * Destination = Pointer to destination address
- * NOTES:
- * If found the NTE if referenced
- * RETURNS:
- * Pointer to NTE if found, NULL if not
- */
-{
- KIRQL OldIrql;
- PLIST_ENTRY CurrentEntry;
- PNET_TABLE_ENTRY Current;
- UINT Length, BestLength = 0;
- PNET_TABLE_ENTRY BestNTE = NULL;
-
- TI_DbgPrint(DEBUG_ROUTER, ("Called. Interface (0x%X) Destination (0x%X).\n", Interface, Destination));
-
- TI_DbgPrint(DEBUG_ROUTER, ("Destination (%s).\n", A2S(Destination)));
-
- TcpipAcquireSpinLock(&Interface->Lock, &OldIrql);
-
- CurrentEntry = Interface->NTEListHead.Flink;
- while (CurrentEntry != &Interface->NTEListHead) {
- Current = CONTAINING_RECORD(CurrentEntry, NET_TABLE_ENTRY, IFListEntry);
- TI_DbgPrint(DEBUG_ROUTER, ("Looking at NTE %s\n", A2S(Current->Address)));
-
- Length = CommonPrefixLength(Destination, Current->Address);
- if (BestNTE) {
- if (Length > BestLength) {
- BestNTE = Current;
- BestLength = Length;
- }
- } else {
- BestNTE = Current;
- BestLength = Length;
- }
- CurrentEntry = CurrentEntry->Flink;
- }
-
- TcpipReleaseSpinLock(&Interface->Lock, OldIrql);
+ TI_DbgPrint(DEBUG_ROUTER, ("Returning %d\n", 8 * i + j));
- return BestNTE;
-}
-
-
-PIP_INTERFACE RouterFindOnLinkInterface(
- PIP_ADDRESS Address,
- PNET_TABLE_ENTRY NTE)
-/*
- * FUNCTION: Checks all on-link prefixes to find out if an address is on-link
- * ARGUMENTS:
- * Address = Pointer to address to check
- * NTE = Pointer to NTE to check (NULL = check all interfaces)
- * RETURNS:
- * Pointer to interface if address is on-link, NULL if not
- */
-{
- PLIST_ENTRY CurrentEntry;
- PPREFIX_LIST_ENTRY Current;
-
- TI_DbgPrint(DEBUG_ROUTER, ("Called. Address (0x%X) NTE (0x%X).\n", Address, NTE));
-
- TI_DbgPrint(DEBUG_ROUTER, ("Address (%s) NTE (%s).\n",
- A2S(Address), NTE ? A2S(NTE->Address) : ""));
-
- CurrentEntry = PrefixListHead.Flink;
- while (CurrentEntry != &PrefixListHead) {
- Current = CONTAINING_RECORD(CurrentEntry, PREFIX_LIST_ENTRY, ListEntry);
-
- if (HasPrefix(Address, &Current->Prefix, Current->PrefixLength) &&
- ((!NTE) || (NTE->Interface == Current->Interface)))
- return Current->Interface;
-
- CurrentEntry = CurrentEntry->Flink;
- }
-
- return NULL;
+ return 8 * i + j;
}
}
-PNEIGHBOR_CACHE_ENTRY RouterGetRoute(
- PIP_ADDRESS Destination,
- PNET_TABLE_ENTRY NTE)
+PNEIGHBOR_CACHE_ENTRY RouterGetRoute(PIP_ADDRESS Destination)
/*
* FUNCTION: Finds a router to use to get to Destination
* ARGUMENTS:
* Destination = Pointer to destination address (NULL means don't care)
- * NTE = Pointer to NTE describing net to send on
- * (NULL means don't care)
* RETURNS:
* Pointer to NCE for router, NULL if none was found
* NOTES:
UINT Length, BestLength = 0;
PNEIGHBOR_CACHE_ENTRY NCE, BestNCE = NULL;
- TI_DbgPrint(DEBUG_ROUTER, ("Called. Destination (0x%X) NTE (0x%X).\n", Destination, NTE));
+ TI_DbgPrint(DEBUG_ROUTER, ("Called. Destination (0x%X)\n", Destination));
TI_DbgPrint(DEBUG_ROUTER, ("Destination (%s)\n", A2S(Destination)));
- if( NTE )
- TI_DbgPrint(DEBUG_ROUTER, ("NTE (%s).\n", A2S(NTE->Address)));
TcpipAcquireSpinLock(&FIBLock, &OldIrql);
NCE = Current->Router;
State = NCE->State;
- if ((!NTE) || (NTE->Interface == NCE->Interface)) {
- if (Destination)
- Length = CommonPrefixLength(Destination, &NCE->Address);
- else
- Length = 0;
-
- if (BestNCE) {
- if ((State > BestState) ||
- ((State == BestState) &&
- (Length > BestLength))) {
- /* This seems to be a better router */
- BestNCE = NCE;
- BestLength = Length;
- BestState = State;
- }
- } else {
- /* First suitable router found, save it */
- BestNCE = NCE;
- BestLength = Length;
- BestState = State;
- }
- }
+ if (Destination)
+ Length = CommonPrefixLength(Destination, &NCE->Address);
+ else
+ Length = 0;
+
+ if (BestNCE) {
+ if ((State > BestState) ||
+ ((State == BestState) &&
+ (Length > BestLength))) {
+ /* This seems to be a better router */
+ BestNCE = NCE;
+ BestLength = Length;
+ BestState = State;
+ }
+ } else {
+ /* First suitable router found, save it */
+ BestNCE = NCE;
+ BestLength = Length;
+ BestState = State;
+ }
+
CurrentEntry = NextEntry;
}
}
-PFIB_ENTRY RouterCreateRouteIPv4(
- IPv4_RAW_ADDRESS NetworkAddress,
- IPv4_RAW_ADDRESS Netmask,
- IPv4_RAW_ADDRESS RouterAddress,
- PNET_TABLE_ENTRY NTE,
+PFIB_ENTRY RouterCreateRoute(
+ IP_ADDRESS NetworkAddress,
+ IP_ADDRESS Netmask,
+ IP_ADDRESS RouterAddress,
+ PIP_INTERFACE Interface,
UINT Metric)
/*
* FUNCTION: Creates a route with IPv4 addresses as parameters
* for providing this reference
*/
{
- PIP_ADDRESS pNetworkAddress;
- PIP_ADDRESS pNetmask;
- PIP_ADDRESS pRouterAddress;
PNEIGHBOR_CACHE_ENTRY NCE;
PFIB_ENTRY FIBE;
- pNetworkAddress = AddrBuildIPv4(NetworkAddress);
- if (!pNetworkAddress) {
- TI_DbgPrint(MIN_TRACE, ("Insufficient resources.\n"));
- return NULL;
- }
-
- pNetmask = AddrBuildIPv4(Netmask);
- if (!pNetmask) {
- TI_DbgPrint(MIN_TRACE, ("Insufficient resources.\n"));
- return NULL;
- }
-
- pRouterAddress = AddrBuildIPv4(RouterAddress);
- if (!pRouterAddress) {
- TI_DbgPrint(MIN_TRACE, ("Insufficient resources.\n"));
- return NULL;
- }
-
/* The NCE references RouterAddress. The NCE is referenced for us */
- NCE = NBAddNeighbor(NTE->Interface,
- pRouterAddress,
+ NCE = NBAddNeighbor(Interface,
+ &RouterAddress,
NULL,
- NTE->Interface->AddressLength,
+ Interface->AddressLength,
NUD_PROBE);
if (!NCE) {
/* Not enough free resources */
return NULL;
}
- FIBE = RouterAddRoute(pNetworkAddress, pNetmask, NCE, 1);
+ FIBE = RouterAddRoute(&NetworkAddress, &Netmask, NCE, 1);
if (!FIBE) {
/* Not enough free resources */
NBRemoveNeighbor(NCE);
projects / reactos.git / blobdiff