* Acess2 IP Stack
* - Address Resolution Protocol
*/
+#define DEBUG 0
+#define VERSION ((0<<8)|10)
#include "ipstack.h"
#include <modules.h>
#include <fs_devfs.h>
+#include <tpl_drv_common.h>
+#include <tpl_drv_network.h>
// === IMPORTS ===
int ARP_Initialise();
int IPStack_Install(char **Arguments);
char *IPStack_ReadDir(tVFS_Node *Node, int Pos);
tVFS_Node *IPStack_FindDir(tVFS_Node *Node, char *Name);
+ int IPStack_IOCtl(tVFS_Node *Node, int ID, void *Data);
+ int IPStack_AddInterface(char *Device);
+tAdapter *IPStack_GetAdapter(char *Path);
// === GLOBALS ===
-MODULE_DEFINE(0, 0x000A, IPStack, IPStack_Install, NULL);
+MODULE_DEFINE(0, VERSION, IPStack, IPStack_Install, NULL, NULL);
tDevFS_Driver gIP_DriverInfo = {
NULL, "ip",
{
+ .Size = 0, // Number of interfaces
.NumACLs = 1,
.ACLs = &gVFS_ACL_EveryoneRX,
.Flags = VFS_FFLAG_DIRECTORY,
.FindDir = IPStack_FindDir
}
};
- int giIP_NumInterfaces;
+ int glIP_Interfaces = 0;
tInterface *gIP_Interfaces = NULL;
+tInterface *gIP_Interfaces_Last = NULL;
+ int glIP_Adapters = 0;
+tAdapter *gIP_Adapters = NULL;
// === CODE ===
/**
*/
tVFS_Node *IPStack_FindDir(tVFS_Node *Node, char *Name)
{
- return NULL;
+ int i;
+ tInterface *iface;
+
+ if(Name[0] != 'i' || Name[1] != 'p') return NULL;
+ if(Name[2] < '0' || Name[2] > '9') return NULL;
+
+ if(Name[3] == '\0') {
+ i = Name[2] - '0';
+ for( iface = gIP_Interfaces; iface && i--; iface = iface->Next ) ;
+ if(!iface) return NULL;
+ return &iface->Node;
+ }
+
+ if(Name[3] < '0' || Name[3] > '9') return NULL;
+
+ i = (Name[2] - '0')*10;
+ i += Name[3] - '0';
+
+ for( iface = gIP_Interfaces; iface && i--; iface = iface->Next ) ;
+ if(!iface) return NULL;
+ return &iface->Node;
+}
+
+static const char *casIOCtls[] = { DRV_IOCTLNAMES, "add_interface", NULL };
+/**
+ * \brief Handles IOCtls for the IPStack root
+ */
+int IPStack_IOCtl(tVFS_Node *Node, int ID, void *Data)
+{
+ switch(ID)
+ {
+ // --- Standard IOCtls (0-3) ---
+ case DRV_IOCTL_TYPE:
+ return DRV_TYPE_MISC;
+
+ case DRV_IOCTL_IDENT:
+ if( !CheckMem( Data, 4 ) ) return -1;
+ memcpy(Data, "IP\0\0", 4);
+ return 1;
+
+ case DRV_IOCTL_VERSION:
+ return VERSION;
+
+ case DRV_IOCTL_LOOKUP:
+ if( !CheckString( Data ) ) return -1;
+ return LookupString( (char**)casIOCtls, (char*)Data );
+
+ // --- Non-Standard IOCtls ---
+ /*
+ * add_interface
+ * - Adds a new IP interface and binds it to a device
+ */
+ case 4:
+ if( !CheckString( Data ) ) return -1;
+ return IPStack_AddInterface(Data);
+ }
+ return 0;
+}
+
+// --- Internal ---
+/**
+ * \fn int IPStack_AddInterface(char *Device)
+ * \brief Adds an interface to the list
+ */
+int IPStack_AddInterface(char *Device)
+{
+ tInterface *iface;
+
+ iface = malloc(sizeof(tInterface));
+ if(!iface) return -2; // Return ERR_MYBAD
+
+ iface->Next = NULL;
+ iface->Type = 0; // Unset type
+
+ // Create Node
+ iface->Node.Flags = VFS_FFLAG_DIRECTORY;
+ iface->Node.Size = 0;
+ iface->Node.NumACLs = 1;
+ iface->Node.ACLs = &gVFS_ACL_EveryoneRX;
+ iface->Node.ReadDir = NULL;
+ iface->Node.FindDir = NULL;
+
+ // Get adapter handle
+ iface->Adapter = IPStack_GetAdapter(Device);
+ if( !iface->Adapter ) {
+ free( iface );
+ return -1; // Return ERR_YOUFAIL
+ }
+
+ // Append to list
+ LOCK( &glIP_Interfaces );
+ if( gIP_Interfaces ) {
+ gIP_Interfaces_Last->Next = iface;
+ gIP_Interfaces_Last = iface;
+ }
+ else {
+ gIP_Interfaces = iface;
+ gIP_Interfaces_Last = iface;
+ }
+ RELEASE( &glIP_Interfaces );
+
+ // Success!
+ return 1;
+}
+
+/**
+ * \fn tAdapter *IPStack_GetAdapter(char *Path)
+ * \brief Gets/opens an adapter given the path
+ */
+tAdapter *IPStack_GetAdapter(char *Path)
+{
+ tAdapter *dev;
+
+ LOCK( &glIP_Adapters );
+
+ // Check if this adapter is already open
+ for( dev = gIP_Adapters; dev; dev = dev->Next )
+ {
+ if( strcmp(dev->Device, Path) == 0 ) {
+ dev->NRef ++;
+ RELEASE( &glIP_Adapters );
+ return dev;
+ }
+ }
+
+ // Ok, so let's open it
+ dev = malloc( sizeof(tAdapter) + strlen(Path) + 1 );
+ if(!dev) {
+ RELEASE( &glIP_Adapters );
+ return NULL;
+ }
+
+ // Fill Structure
+ strcpy( dev->Device, Path );
+ dev->NRef = 1;
+
+ // Open Device
+ dev->DeviceFD = VFS_Open( dev->Device, VFS_OPENFLAG_READ|VFS_OPENFLAG_WRITE );
+ if( dev->DeviceFD == -1 ) {
+ free( dev );
+ RELEASE( &glIP_Adapters );
+ return NULL;
+ }
+
+ // Check that it is a network interface
+ if( VFS_IOCtl(dev->DeviceFD, 0, NULL) != DRV_TYPE_NETWORK ) {
+ Warning("IPStack_GetAdapter: '%s' is not a network interface", dev->Device);
+ VFS_Close( dev->DeviceFD );
+ free( dev );
+ RELEASE( &glIP_Adapters );
+ return NULL;
+ }
+
+ // Get MAC Address
+ VFS_IOCtl(dev->DeviceFD, NET_IOCTL_GETMAC, &dev->MacAddr);
+
+ // Add to list
+ dev->Next = gIP_Adapters;
+ gIP_Adapters = dev;
+
+ RELEASE( &glIP_Adapters );
+ return dev;
}
git.ucc.asn.au / tpg / acess2.git / blobdiff
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