* Acess2 IP Stack
* - Routing Tables
*/
+#define DEBUG 0
+#define VERSION VER2(0,10)
+#include <acess.h>
+#include <tpl_drv_common.h>
#include "ipstack.h"
#include "link.h"
-
-// === TYPES ===
-typedef struct sRoute {
- struct sRoute *Next;
- tVFS_Node Node;
-
- int AddressType; // 0: Invalid, 4: IPv4, 6: IPv4
- void *Network; // Pointer to tIPv4/tIPv6/... at end of structure
- int SubnetBits;
- void *NextHop; // Pointer to tIPv4/tIPv6/... at end of structure
- tInterface *Interface;
-} tRoute;
+// === IMPORTS ===
+tVFS_Node *IPStack_Root_FindDir(tVFS_Node *Node, const char *Filename);
// === PROTOTYPES ===
// - Routes directory
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, tInterface *Interface, void *Address);
// - Individual Routes
-Uint64 IPStack_Route_IOCtl(tVFS_Node *Node, int ID, void *Data);
-
+ int IPStack_Route_IOCtl(tVFS_Node *Node, int ID, void *Data);
// === GLOBALS ===
int giIP_NextRouteId = 1;
}
{
- int len = snprintf(NULL, 12, "%i", rt->Node.Inode);
+ int len = sprintf(NULL, "%i", rt->Node.Inode);
char buf[len+1];
sprintf(buf, "%i", rt->Node.Inode);
return strdup(buf);
tVFS_Node *IPStack_RouteDir_FindDir(tVFS_Node *Node, const char *Name)
{
int num = atoi(Name);
+ tRoute *rt;
// Zero is invalid, sorry :)
if( !num ) return NULL;
}
/**
- * \brief Names for interface IOCtl Calls
+ * \brief Names for the route list IOCtl Calls
*/
static const char *casIOCtls_RouteDir[] = {
DRV_IOCTLNAMES,
- "add_route" // Add a route - char *InterfaceName
+ "add_route", // Add a route - char *InterfaceName
+ "locate_route", // Find the best route for an address - struct {int Type, char Address[]} *
NULL
};
+/**
+ * \brief IOCtl for /Devices/ip/routes/
+ */
int IPStack_RouteDir_IOCtl(tVFS_Node *Node, int ID, void *Data)
{
+ int tmp;
switch(ID)
{
// --- Standard IOCtls (0-3) ---
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;
+ if( !CheckMem(Data, sizeof(int) + IPStack_GetAddressSize(data->Type)) )
+ return -1;
+
+ rt = IPStack_FindRoute(data->Type, NULL, data->Addr);
+
+ if( !rt )
+ return 0;
+
+ return rt->Node.Inode;
+ }
+ break;
}
return 0;
}
/**
* \brief Create a new route entry
+ * \param InterfaceName Name of the interface using this route
*/
int IPStack_Route_Create(const char *InterfaceName)
{
}
// Get the size of the specified address type
- size = IPStack_GetAddressSize(iface->AddressType);
+ size = IPStack_GetAddressSize(iface->Type);
if( size == 0 ) {
return 0;
}
// Allocate space
rt = calloc(1, sizeof(tRoute) + size*2 );
- rt->Next = NULL;
- //rt->Node
+ // Set up node
+ rt->Node.ImplPtr = rt;
+ rt->Node.Inode = giIP_NextRouteId ++;
+ rt->Node.Size = 0;
+ rt->Node.NumACLs = 1,
+ rt->Node.ACLs = &gVFS_ACL_EveryoneRO;
+ rt->Node.IOCtl = IPStack_Route_IOCtl;
- rt->AddressType = iface->AddressType;
+ // Set up state
+ rt->AddressType = iface->Type;
rt->Network = (void *)( (tVAddr)rt + sizeof(tRoute) );
rt->SubnetBits = 0;
rt->NextHop = (void *)( (tVAddr)rt + sizeof(tRoute) + size );
rt->Interface = iface;
+
+ // Add to list
+ if( gIP_RoutesEnd ) {
+ gIP_RoutesEnd->Next = rt;
+ gIP_RoutesEnd = rt;
+ }
+ else {
+ gIP_Routes = gIP_RoutesEnd = rt;
+ }
+
+ return rt->Node.Inode;
+}
+
+/**
+ */
+tRoute *IPStack_FindRoute(int AddressType, tInterface *Interface, void *Address)
+{
+ tRoute *rt;
+ tRoute *best = NULL;
+
+ if( Interface && AddressType != Interface->Type ) return NULL;
+
+ for( rt = gIP_Routes; rt; rt = rt->Next )
+ {
+ // Check interface
+ if( Interface && rt->Interface != Interface ) continue;
+ // Check address type
+ if( rt->AddressType != AddressType ) continue;
+
+ // 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 equally direct, choose the best metric
+ if( best->SubnetBits == rt->SubnetBits && best->Metric < rt->Metric ) continue;
+ }
+
+ best = rt;
+ }
+
+ return best;
+}
+
+/**
+ * \brief Names for route IOCtl Calls
+ */
+static const char *casIOCtls_Route[] = {
+ DRV_IOCTLNAMES,
+ "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
+ };
+
+/**
+ * \brief IOCtl for /Devices/ip/routes/#
+ */
+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;
+
+ case DRV_IOCTL_LOOKUP:
+ tmp = ModUtil_LookupString( (char**)casIOCtls_Route, (char*)Data );
+ LEAVE('i', tmp);
+ return tmp;
+
+ // Get Network
+ case 4:
+ if( !CheckMem(Data, addrSize) ) return -1;
+ memcpy(Data, rt->Network, addrSize);
+ return 1;
+ // Set Network
+ case 5:
+ if( !CheckMem(Data, addrSize) ) return -1;
+ memcpy(rt->Network, Data, addrSize);
+ return 1;
+
+ // Get Next Hop
+ case 6:
+ if( !CheckMem(Data, addrSize) ) return -1;
+ memcpy(Data, rt->NextHop, addrSize);
+ return 1;
+ // Set Next Hop
+ case 7:
+ if( !CheckMem(Data, addrSize) ) return -1;
+ memcpy(rt->NextHop, Data, addrSize);
+ return 1;
+
+ // Get/Set Subnet Bits
+ case 8:
+ if( Data ) {
+ if( !CheckMem(Data, sizeof(int)) ) return -1;
+ if( *iData < 0 || *iData > addrSize*8 )
+ return -1;
+ rt->SubnetBits = *iData;
+ }
+ return rt->SubnetBits;
+
+ // Get/Set Metric
+ case 9:
+ if( Data ) {
+ if( !CheckMem(Data, sizeof(int)) ) return -1;
+ if( *iData < 0 ) return -1;
+ rt->Metric = *iData;
+ }
+ return rt->Metric;
+
+ // Get interface name
+ case 10:
+ 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;
+ }
}
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