3 * - Stack Initialisation
6 #define VERSION ((0<<8)|10)
11 #include <tpl_drv_common.h>
12 #include <tpl_drv_network.h>
15 extern int ARP_Initialise();
16 extern int IPv4_Initialise();
19 int IPStack_Install(char **Arguments);
20 char *IPStack_ReadDir(tVFS_Node *Node, int Pos);
21 tVFS_Node *IPStack_FindDir(tVFS_Node *Node, char *Name);
22 int IPStack_IOCtl(tVFS_Node *Node, int ID, void *Data);
23 int IPStack_AddInterface(char *Device);
24 tAdapter *IPStack_GetAdapter(char *Path);
27 MODULE_DEFINE(0, VERSION, IPStack, IPStack_Install, NULL, NULL);
28 tDevFS_Driver gIP_DriverInfo = {
31 .Size = 0, // Number of interfaces
33 .ACLs = &gVFS_ACL_EveryoneRX,
34 .Flags = VFS_FFLAG_DIRECTORY,
35 .ReadDir = IPStack_ReadDir,
36 .FindDir = IPStack_FindDir,
37 .IOCtl = IPStack_IOCtl
40 tSpinlock glIP_Interfaces = 0;
41 tInterface *gIP_Interfaces = NULL;
42 tInterface *gIP_Interfaces_Last = NULL;
43 int giIP_NextIfaceId = 1;
44 tSpinlock glIP_Adapters = 0;
45 tAdapter *gIP_Adapters = NULL;
49 * \fn int IPStack_Install(char **Arguments)
50 * \brief Intialise the relevant parts of the stack and register with DevFS
52 int IPStack_Install(char **Arguments)
62 // Parse module arguments
63 for( i = 0; Arguments[i]; i++ )
65 //if(strcmp(Arguments[i], "Device") == '=') {
71 DevFS_AddDevice( &gIP_DriverInfo );
77 * \brief Read from the IP Stack's Device Directory
79 char *IPStack_ReadDir(tVFS_Node *Node, int Pos)
83 ENTER("pNode iPos", Node, Pos);
86 for( iface = gIP_Interfaces; iface && Pos--; iface = iface->Next ) ;
88 // Did we run off the end?
99 Pos = iface->Node.ImplInt;
105 name[2] = '0' + Pos/10;
106 name[3] = '0' + Pos%10;
110 name[2] = '0' + Pos/100;
111 name[3] = '0' + (Pos/10)%10;
112 name[4] = '0' + Pos%10;
117 // Return the pre-generated name
122 * \brief Get the node of an interface
124 tVFS_Node *IPStack_FindDir(tVFS_Node *Node, char *Name)
129 ENTER("pNode sName", Node, Name);
131 if(Name[0] != 'i' || Name[1] != 'p') {
137 while('0' <= Name[i] && Name[i] <= '9')
140 num += Name[i] - '0';
143 if(Name[i] != '\0') {
148 for( iface = gIP_Interfaces; iface; iface = iface->Next )
150 if( iface->Node.ImplInt == num )
152 LEAVE('p', &iface->Node);
160 static const char *casIOCtls_Root[] = { DRV_IOCTLNAMES, "add_interface", NULL };
161 static const char *casIOCtls_Iface[] = {
164 "get_address", "set_address",
166 "get_gateway", "set_gateway",
170 * \brief Handles IOCtls for the IPStack root/interfaces
172 int IPStack_IOCtl(tVFS_Node *Node, int ID, void *Data)
175 ENTER("pNode iID pData", Node, ID, Data);
179 // --- Standard IOCtls (0-3) ---
181 LEAVE('i', DRV_TYPE_MISC);
182 return DRV_TYPE_MISC;
184 case DRV_IOCTL_IDENT:
185 if( !CheckMem( Data, 4 ) ) LEAVE_RET('i', -1);
186 memcpy(Data, "IP\0\0", 4);
190 case DRV_IOCTL_VERSION:
194 case DRV_IOCTL_LOOKUP:
195 if( !CheckString( Data ) ) LEAVE_RET('i', -1);
196 LOG("Lookup '%s'", Data);
197 if( Node == &gIP_DriverInfo.RootNode )
198 tmp = LookupString( (char**)casIOCtls_Root, (char*)Data );
200 tmp = LookupString( (char**)casIOCtls_Iface, (char*)Data );
205 if(Node == &gIP_DriverInfo.RootNode)
211 * - Adds a new IP interface and binds it to a device
214 if( Threads_GetUID() != 0 ) LEAVE_RET('i', -1);
215 if( !CheckString( Data ) ) LEAVE_RET('i', -1);
216 tmp = IPStack_AddInterface(Data);
224 tInterface *iface = (tInterface*)Node->ImplPtr;
229 * - Get/Set the interface type
236 if( Threads_GetUID() != 0 ) {
237 LOG("Attempt by non-root to alter an interface (%i)", Threads_GetUID());
241 if( !CheckMem( Data, sizeof(int) ) ) {
242 LOG("Invalid pointer %p", Data);
246 switch( *(int*)Data )
250 memset(&iface->IP6, 0, sizeof(tIPv6)); // Clear address
254 memset(&iface->IP4, 0, sizeof(tIPv4));
258 memset(&iface->IP6, 0, sizeof(tIPv6));
265 LEAVE('i', iface->Type);
270 * - Get the interface's address
275 case 0: LEAVE_RET('i', 1);
277 if( !CheckMem( Data, sizeof(tIPv4) ) ) LEAVE_RET('i', -1);
278 memcpy( Data, &iface->IP4.Address, sizeof(tIPv4) );
281 if( !CheckMem( Data, sizeof(tIPv6) ) ) LEAVE_RET('i', -1);
282 memcpy( Data, &iface->IP6.Address, sizeof(tIPv6) );
289 * - Get the interface's address
292 if( Threads_GetUID() != 0 ) LEAVE_RET('i', -1);
295 case 0: LEAVE_RET('i', 1);
297 if( !CheckMem( Data, sizeof(tIPv4) ) ) LEAVE_RET('i', -1);
298 iface->Type = 0; // One very hacky mutex/trash protector
299 memcpy( &iface->IP4.Address, Data, sizeof(tIPv4) );
303 if( !CheckMem( Data, sizeof(tIPv6) ) ) LEAVE_RET('i', -1);
305 memcpy( &iface->IP6.Address, Data, sizeof(tIPv6) );
313 * - Get/Set the bits in the address subnet
319 switch( iface->Type )
321 case 4: LEAVE_RET('i', iface->IP4.SubnetBits);
322 case 6: LEAVE_RET('i', iface->IP6.SubnetBits);
323 default: LEAVE_RET('i', 0);
328 if( Threads_GetUID() != 0 ) LEAVE_RET('i', -1);
329 if( !CheckMem(Data, sizeof(int)) ) LEAVE_RET('i', -1);
331 // Check and set the subnet bits
332 switch( iface->Type )
335 if( *(int*)Data < 0 || *(int*)Data > 31 ) LEAVE_RET('i', -1);
336 iface->IP4.SubnetBits = *(int*)Data;
337 LEAVE_RET('i', iface->IP4.SubnetBits);
339 if( *(int*)Data < 0 || *(int*)Data > 127 ) LEAVE_RET('i', -1);
340 iface->IP6.SubnetBits = *(int*)Data;
341 LEAVE_RET('i', iface->IP6.SubnetBits);
351 * - Get the interface's IPv4 gateway
359 if( !CheckMem( Data, sizeof(tIPv4) ) ) LEAVE_RET('i', -1);
360 memcpy( Data, &iface->IP4.Gateway, sizeof(tIPv4) );
370 * - Get the interface's IPv4 gateway
373 if( Threads_GetUID() != 0 ) LEAVE_RET('i', -1);
380 if( !CheckMem( Data, sizeof(tIPv4) ) ) LEAVE_RET('i', -1);
381 iface->Type = 0; // One very hacky mutex/trash protector
382 memcpy( &iface->IP4.Gateway, Data, sizeof(tIPv4) );
399 * \fn int IPStack_AddInterface(char *Device)
400 * \brief Adds an interface to the list
402 int IPStack_AddInterface(char *Device)
406 ENTER("sDevice", Device);
408 iface = malloc(sizeof(tInterface));
411 return -2; // Return ERR_MYBAD
415 iface->Type = 0; // Unset type
418 iface->Node.ImplPtr = iface;
419 iface->Node.ImplInt = giIP_NextIfaceId++;
420 iface->Node.Flags = VFS_FFLAG_DIRECTORY;
421 iface->Node.Size = 0;
422 iface->Node.NumACLs = 1;
423 iface->Node.ACLs = &gVFS_ACL_EveryoneRX;
424 iface->Node.ReadDir = NULL;
425 iface->Node.FindDir = NULL;
426 iface->Node.IOCtl = IPStack_IOCtl;
428 // Get adapter handle
429 iface->Adapter = IPStack_GetAdapter(Device);
430 if( !iface->Adapter ) {
433 return -1; // Return ERR_YOUFAIL
437 LOCK( &glIP_Interfaces );
438 if( gIP_Interfaces ) {
439 gIP_Interfaces_Last->Next = iface;
440 gIP_Interfaces_Last = iface;
443 gIP_Interfaces = iface;
444 gIP_Interfaces_Last = iface;
446 RELEASE( &glIP_Interfaces );
448 gIP_DriverInfo.RootNode.Size ++;
451 LEAVE('i', iface->Node.ImplInt);
452 return iface->Node.ImplInt;
456 * \fn tAdapter *IPStack_GetAdapter(char *Path)
457 * \brief Gets/opens an adapter given the path
459 tAdapter *IPStack_GetAdapter(char *Path)
464 ENTER("sPath", Path);
466 LOCK( &glIP_Adapters );
468 // Check if this adapter is already open
469 for( dev = gIP_Adapters; dev; dev = dev->Next )
471 if( strcmp(dev->Device, Path) == 0 ) {
473 RELEASE( &glIP_Adapters );
479 // Ok, so let's open it
480 dev = malloc( sizeof(tAdapter) + strlen(Path) + 1 );
482 RELEASE( &glIP_Adapters );
488 strcpy( dev->Device, Path );
492 dev->DeviceFD = VFS_Open( dev->Device, VFS_OPENFLAG_READ|VFS_OPENFLAG_WRITE );
493 if( dev->DeviceFD == -1 ) {
495 RELEASE( &glIP_Adapters );
500 // Check that it is a network interface
501 tmp = VFS_IOCtl(dev->DeviceFD, 0, NULL);
502 LOG("Device type = %i", tmp);
503 if( tmp != DRV_TYPE_NETWORK ) {
504 Warning("IPStack_GetAdapter: '%s' is not a network interface", dev->Device);
505 VFS_Close( dev->DeviceFD );
507 RELEASE( &glIP_Adapters );
513 VFS_IOCtl(dev->DeviceFD, NET_IOCTL_GETMAC, &dev->MacAddr);
516 dev->Next = gIP_Adapters;
519 RELEASE( &glIP_Adapters );
522 Link_WatchDevice( dev );