#include "ipstack.h"
#include "link.h"
-// === IMPORTS ===
-tVFS_Node *IPStack_Root_FindDir(tVFS_Node *Node, const char *Filename);
+#define DEFAUTL_METRIC 30
-// === TYPES ===
-typedef struct sRoute {
- struct sRoute *Next;
-
- tVFS_Node Node;
-
- tInterface *Interface; // Interface for this route
- int AddressType; // 0: Invalid, 4: IPv4, 6: IPv4
- void *Network; // Network - Pointer to tIPv4/tIPv6/... at end of structure
- int SubnetBits; // Number of bits in \a Network that are valid
- void *NextHop; // Next Hop address - Pointer to tIPv4/tIPv6/... at end of structure
- int Metric; // Route priority
-} tRoute;
+// === IMPORTS ===
+extern tInterface *gIP_Interfaces;
+extern tVFS_Node *IPStack_Root_FindDir(tVFS_Node *Node, const char *Filename);
// === PROTOTYPES ===
// - Routes directory
char *IPStack_RouteDir_ReadDir(tVFS_Node *Node, int Pos);
tVFS_Node *IPStack_RouteDir_FindDir(tVFS_Node *Node, const char *Name);
int IPStack_RouteDir_IOCtl(tVFS_Node *Node, int ID, void *Data);
- int IPStack_Route_Create(const char *InterfaceName);
-tRoute *IPStack_FindRoute(int AddressType, void *Address);
+// - Route Management
+tRoute *IPStack_Route_Create(const char *InterfaceName);
+tRoute *IPStack_AddRoute(const char *Interface, void *Network, int SubnetBits, void *NextHop, int Metric);
+tRoute *IPStack_FindRoute(int AddressType, tInterface *Interface, void *Address);
// - Individual Routes
int IPStack_Route_IOCtl(tVFS_Node *Node, int ID, void *Data);
int IPStack_RouteDir_IOCtl(tVFS_Node *Node, int ID, void *Data)
{
int tmp;
+ tRoute *rt;
+ ENTER("pNode iID pData", Node, ID, Data);
switch(ID)
{
// --- Standard IOCtls (0-3) ---
- case DRV_IOCTL_TYPE:
- LEAVE('i', DRV_TYPE_MISC);
- return DRV_TYPE_MISC;
-
- case DRV_IOCTL_IDENT:
- tmp = ModUtil_SetIdent(Data, STR(IDENT));
- LEAVE('i', 1);
- return 1;
+ BASE_IOCTLS(DRV_TYPE_MISC, STR(IDENT), VERSION, casIOCtls_RouteDir)
- case DRV_IOCTL_VERSION:
- LEAVE('x', VERSION);
- return VERSION;
-
- case DRV_IOCTL_LOOKUP:
- tmp = ModUtil_LookupString( (char**)casIOCtls_RouteDir, (char*)Data );
+ case 4: // Add Route
+ if( !CheckString(Data) ) LEAVE_RET('i', -1);
+ rt = IPStack_Route_Create(Data);
+ if( !rt )
+ tmp = -1;
+ else
+ tmp = rt->Node.Inode;
LEAVE('i', tmp);
return tmp;
- case 4: // Add Route
- if( !CheckString(Data) ) return -1;
- return IPStack_Route_Create(Data);
-
case 5: // Locate Route
{
struct {
int Type;
Uint8 Addr[];
} *data = Data;
- tRoute *rt;
if( !CheckMem(Data, sizeof(int)) )
- return -1;
+ LEAVE_RET('i', -1);
if( !CheckMem(Data, sizeof(int) + IPStack_GetAddressSize(data->Type)) )
- return -1;
+ LEAVE_RET('i', -1);
- rt = IPStack_FindRoute(data->Type, data->Addr);
+ Log_Debug("IPStack", "Route_RouteDir_IOCtl - FindRoute %i, %s",
+ data->Type, IPStack_PrintAddress(data->Type, data->Addr) );
+ rt = IPStack_FindRoute(data->Type, NULL, data->Addr);
if( !rt )
- return 0;
+ LEAVE_RET('i', 0);
+ LEAVE('i', rt->Node.Inode);
return rt->Node.Inode;
}
break;
}
+ LEAVE('i', 0);
return 0;
}
* \brief Create a new route entry
* \param InterfaceName Name of the interface using this route
*/
-int IPStack_Route_Create(const char *InterfaceName)
+tRoute *IPStack_Route_Create(const char *InterfaceName)
{
tRoute *rt;
tInterface *iface;
// Note: Oh man! This is such a hack
{
tVFS_Node *node = IPStack_Root_FindDir(NULL, InterfaceName);
- if( !node ) return 0;
+ if( !node ) {
+ Log_Debug("IPStack", "IPStack_Route_Create - Unknown interface '%s'\n", InterfaceName);
+ return NULL;
+ }
iface = node->ImplPtr;
+ if(node->Close) node->Close(node);
}
// Get the size of the specified address type
size = IPStack_GetAddressSize(iface->Type);
if( size == 0 ) {
- return 0;
+ return NULL;
}
// Allocate space
rt->SubnetBits = 0;
rt->NextHop = (void *)( (tVAddr)rt + sizeof(tRoute) + size );
rt->Interface = iface;
+ rt->Metric = DEFAUTL_METRIC;
+ memset(rt->Network, 0, size);
+ memset(rt->NextHop, 0, size);
// Add to list
if( gIP_RoutesEnd ) {
gIP_Routes = gIP_RoutesEnd = rt;
}
- return rt->Node.Inode;
+ Log_Log("IPStack", "Route entry for '%s' created", InterfaceName);
+
+ return rt;
+}
+
+/**
+ * \brief Add and fill a route
+ */
+tRoute *IPStack_AddRoute(const char *Interface, void *Network, int SubnetBits, void *NextHop, int Metric)
+{
+ tRoute *rt = IPStack_Route_Create(Interface);
+ int addrSize;
+
+ if( !rt ) return NULL;
+
+ addrSize = IPStack_GetAddressSize(rt->Interface->Type);
+
+ memcpy(rt->Network, Network, addrSize);
+ if( NextHop )
+ memcpy(rt->NextHop, NextHop, addrSize);
+ rt->SubnetBits = SubnetBits;
+ if( Metric )
+ rt->Metric = Metric;
+
+ return rt;
}
/**
*/
-tRoute *IPStack_FindRoute(int AddressType, void *Address)
+tRoute *IPStack_FindRoute(int AddressType, tInterface *Interface, void *Address)
{
tRoute *rt;
tRoute *best = NULL;
+ tInterface *iface;
+ int addrSize;
+ ENTER("iAddressType pInterface sAddress",
+ AddressType, Interface, IPStack_PrintAddress(AddressType, Address));
+
+ if( Interface && AddressType != Interface->Type ) {
+ LOG("Interface->Type (%i) != AddressType", Interface->Type);
+ LEAVE('n');
+ return NULL;
+ }
+
+ // Get address size
+ addrSize = IPStack_GetAddressSize(AddressType);
+
+ // Check against explicit routes
for( rt = gIP_Routes; rt; rt = rt->Next )
{
+ // Check interface
+ if( Interface && rt->Interface != Interface ) continue;
+ // Check address type
if( rt->AddressType != AddressType ) continue;
+ LOG("Checking network %s/%i", IPStack_PrintAddress(AddressType, rt->Network), rt->SubnetBits);
+
+ // Check if the address matches
if( !IPStack_CompareAddress(AddressType, rt->Network, Address, rt->SubnetBits) )
continue;
if( best ) {
// More direct routes are preferred
- if( best->SubnetBits > rt->SubnetBits ) continue;
+ if( best->SubnetBits > rt->SubnetBits ) {
+ LOG("Skipped - less direct (%i < %i)", rt->SubnetBits, best->SubnetBits);
+ continue;
+ }
// If equally direct, choose the best metric
- if( best->SubnetBits == rt->SubnetBits && best->Metric < rt->Metric ) continue;
+ if( best->SubnetBits == rt->SubnetBits && best->Metric < rt->Metric ) {
+ LOG("Skipped - higher metric (%i > %i)", rt->Metric, best->Metric);
+ continue;
+ }
}
best = rt;
}
+ // Check against implicit routes
+ if( !best && !Interface )
+ {
+ for( iface = gIP_Interfaces; iface; iface = iface->Next )
+ {
+ if( Interface && iface != Interface ) continue;
+ if( iface->Type != AddressType ) continue;
+
+
+ // Check if the address matches
+ if( !IPStack_CompareAddress(AddressType, iface->Address, Address, iface->SubnetBits) )
+ continue;
+
+ if( best ) {
+ // More direct routes are preferred
+ if( best->SubnetBits > rt->SubnetBits ) {
+ LOG("Skipped - less direct (%i < %i)", rt->SubnetBits, best->SubnetBits);
+ continue;
+ }
+ // If equally direct, choose the best metric
+ if( best->SubnetBits == rt->SubnetBits && best->Metric < rt->Metric ) {
+ LOG("Skipped - higher metric (%i > %i)", rt->Metric, best->Metric);
+ continue;
+ }
+ }
+
+ rt = &iface->Route;
+ memcpy(rt->Network, iface->Address, addrSize);
+ memset(rt->NextHop, 0, addrSize);
+ rt->Metric = DEFAUTL_METRIC;
+ rt->SubnetBits = iface->SubnetBits;
+
+ best = rt;
+ }
+ }
+ if( !best && Interface )
+ {
+ rt = &Interface->Route;
+ // Make sure route is up to date
+ memcpy(rt->Network, iface->Address, addrSize);
+ memset(rt->NextHop, 0, addrSize);
+ rt->Metric = DEFAUTL_METRIC;
+ rt->SubnetBits = iface->SubnetBits;
+
+ if( IPStack_CompareAddress(AddressType, rt->Network, Address, rt->SubnetBits) )
+ {
+ best = rt;
+ }
+ }
+
+ LEAVE('p', best);
return best;
}
*/
static const char *casIOCtls_Route[] = {
DRV_IOCTLNAMES,
- "get_network", // Get network - (void *Data)
- "set_network", // Set network - (void *Data)
- "get_nexthop", // Get next hop - (void *Data)
- "set_nexthop", // Set next hop - (void *Data)
- "getset_subnetbits", // Get/Set subnet bits - (int *Bits)
- "getset_metric", // Get/Set metric - (int *Metric)
+ "get_type", // Get address type - (void), returns integer type
+ "get_network", // Get network - (void *Data), returns boolean success
+ "set_network", // Set network - (void *Data), returns boolean success
+ "get_nexthop", // Get next hop - (void *Data), returns boolean success
+ "set_nexthop", // Set next hop - (void *Data), returns boolean success
+ "getset_subnetbits", // Get/Set subnet bits - (int *Bits), returns current value
+ "getset_metric", // Get/Set metric - (int *Metric), returns current value
+ "get_interface", // Get interface name - (char *Name), returns name length, NULL OK
NULL
};
*/
int IPStack_Route_IOCtl(tVFS_Node *Node, int ID, void *Data)
{
- int tmp;
int *iData = Data;
tRoute *rt = Node->ImplPtr;
int addrSize = IPStack_GetAddressSize(rt->AddressType);
switch(ID)
{
// --- Standard IOCtls (0-3) ---
- case DRV_IOCTL_TYPE:
- LEAVE('i', DRV_TYPE_MISC);
- return DRV_TYPE_MISC;
-
- case DRV_IOCTL_IDENT:
- tmp = ModUtil_SetIdent(Data, STR(IDENT));
- LEAVE('i', 1);
- return 1;
-
- case DRV_IOCTL_VERSION:
- LEAVE('x', VERSION);
- return VERSION;
+ BASE_IOCTLS(DRV_TYPE_MISC, STR(IDENT), VERSION, casIOCtls_Route)
- case DRV_IOCTL_LOOKUP:
- tmp = ModUtil_LookupString( (char**)casIOCtls_Route, (char*)Data );
- LEAVE('i', tmp);
- return tmp;
+ // Get address type
+ case 4:
+ return rt->AddressType;
// Get Network
- case 4:
+ case 5:
if( !CheckMem(Data, addrSize) ) return -1;
memcpy(Data, rt->Network, addrSize);
return 1;
// Set Network
- case 5:
+ case 6:
if( !CheckMem(Data, addrSize) ) return -1;
memcpy(rt->Network, Data, addrSize);
return 1;
// Get Next Hop
- case 6:
+ case 7:
if( !CheckMem(Data, addrSize) ) return -1;
memcpy(Data, rt->NextHop, addrSize);
return 1;
// Set Next Hop
- case 7:
+ case 8:
if( !CheckMem(Data, addrSize) ) return -1;
memcpy(rt->NextHop, Data, addrSize);
return 1;
// Get/Set Subnet Bits
- case 8:
+ case 9:
if( Data ) {
if( !CheckMem(Data, sizeof(int)) ) return -1;
if( *iData < 0 || *iData > addrSize*8 )
return rt->SubnetBits;
// Get/Set Metric
- case 9:
+ case 10:
if( Data ) {
if( !CheckMem(Data, sizeof(int)) ) return -1;
if( *iData < 0 ) return -1;
}
return rt->Metric;
+ // Get interface name
+ case 11:
+ if( Data ) {
+ if( !CheckMem(Data, strlen(rt->Interface->Name) + 1) )
+ return -1;
+ strcpy(Data, rt->Interface->Name);
+ }
+ return strlen(rt->Interface->Name);
+
default:
- return 0;
+ return -1;
}
}