1
0
mirror of https://github.com/SoftEtherVPN/SoftEtherVPN.git synced 2024-11-23 01:49:53 +03:00
SoftEtherVPN/src/Cedar/Layer3.h

150 lines
4.5 KiB
C

// SoftEther VPN Source Code - Developer Edition Master Branch
// Cedar Communication Module
// Layer3.h
// Header of Layer3.c
#ifndef LAYER3_H
#define LAYER3_H
// Constants
#define L3_USERNAME "L3SW_"
// L3 ARP table entry
struct L3ARPENTRY
{
UINT IpAddress; // IP address
UCHAR MacAddress[6]; // MAC address
UCHAR Padding[2];
UINT64 Expire; // Expiration date
};
// L3 ARP resolution waiting list entry
struct L3ARPWAIT
{
UINT IpAddress; // IP address
UINT64 LastSentTime; // Time which the data has been sent last
UINT64 Expire; // Expiration date
};
// L3 IP packet table
struct L3PACKET
{
PKT *Packet; // Packet data body
UINT64 Expire; // Expiration date
UINT NextHopIp; // Local delivery destination IP address
};
// L3 routing table definition
struct L3TABLE
{
UINT NetworkAddress; // Network address
UINT SubnetMask; // Subnet mask
UINT GatewayAddress; // Gateway address
UINT Metric; // Metric
};
// L3 interface definition
struct L3IF
{
L3SW *Switch; // Layer-3 switch
char HubName[MAX_HUBNAME_LEN + 1]; // Virtual HUB name
UINT IpAddress; // IP address
UINT SubnetMask; // Subnet mask
HUB *Hub; // Virtual HUB
SESSION *Session; // Session
LIST *ArpTable; // ARP table
LIST *ArpWaitTable; // ARP waiting table
QUEUE *IpPacketQueue; // IP packet queue (for reception from other interfaces)
LIST *IpWaitList; // IP waiting list
QUEUE *SendQueue; // Transmission queue
UCHAR MacAddress[6]; // MAC address
UCHAR Padding[2];
UINT64 LastDeleteOldArpTable; // Time that old ARP table entries are cleared
LIST *CancelList; // Cancellation list
UINT64 LastBeaconSent; // Time which the beacon has been sent last
};
// L3 switch definition
struct L3SW
{
char Name[MAX_HUBNAME_LEN + 1]; // Name
LOCK *lock; // Lock
REF *ref; // Reference counter
CEDAR *Cedar; // Cedar
bool Active; // During operation flag
bool Online; // Online flag
volatile bool Halt; // Halting flag
LIST *IfList; // Interface list
LIST *TableList; // Routing table list
THREAD *Thread; // Thread
};
// Function prototype
int CmpL3Sw(void *p1, void *p2);
int CmpL3ArpEntry(void *p1, void *p2);
int CmpL3ArpWaitTable(void *p1, void *p2);
int CmpL3Table(void *p1, void *p2);
int CmpL3If(void *p1, void *p2);
void InitCedarLayer3(CEDAR *c);
void FreeCedarLayer3(CEDAR *c);
L3SW *NewL3Sw(CEDAR *c, char *name);
void ReleaseL3Sw(L3SW *s);
void CleanupL3Sw(L3SW *s);
bool L3AddIf(L3SW *s, char *hubname, UINT ip, UINT subnet);
bool L3DelIf(L3SW *s, char *hubname);
bool L3AddTable(L3SW *s, L3TABLE *tbl);
bool L3DelTable(L3SW *s, L3TABLE *tbl);
L3IF *L3SearchIf(L3SW *s, char *hubname);
L3SW *L3GetSw(CEDAR *c, char *name);
L3SW *L3AddSw(CEDAR *c, char *name);
bool L3DelSw(CEDAR *c, char *name);
void L3FreeAllSw(CEDAR *c);
void L3SwStart(L3SW *s);
void L3SwStop(L3SW *s);
void L3SwThread(THREAD *t, void *param);
void L3Test(SERVER *s);
void L3InitAllInterfaces(L3SW *s);
void L3FreeAllInterfaces(L3SW *s);
void L3IfThread(THREAD *t, void *param);
void L3InitInterface(L3IF *f);
void L3FreeInterface(L3IF *f);
L3IF *L3GetNextIf(L3SW *s, UINT ip, UINT *next_hop);
L3TABLE *L3GetBestRoute(L3SW *s, UINT ip);
UINT L3GetNextPacket(L3IF *f, void **data);
void L3Polling(L3IF *f);
void L3PollingBeacon(L3IF *f);
void L3DeleteOldArpTable(L3IF *f);
void L3DeleteOldIpWaitList(L3IF *f);
void L3PollingArpWaitTable(L3IF *f);
void L3SendL2Now(L3IF *f, UCHAR *dest_mac, UCHAR *src_mac, USHORT protocol, void *data, UINT size);
void L3SendArpRequestNow(L3IF *f, UINT dest_ip);
void L3SendArpResponseNow(L3IF *f, UCHAR *dest_mac, UINT dest_ip, UINT src_ip);
void L3GenerateMacAddress(L3IF *f);
L3ARPENTRY *L3SearchArpTable(L3IF *f, UINT ip);
void L3SendIpNow(L3IF *f, L3ARPENTRY *a, L3PACKET *p);
void L3SendIp(L3IF *f, L3PACKET *p);
void L3RecvArp(L3IF *f, PKT *p);
void L3RecvArpRequest(L3IF *f, PKT *p);
void L3RecvArpResponse(L3IF *f, PKT *p);
void L3KnownArp(L3IF *f, UINT ip, UCHAR *mac);
void L3SendArp(L3IF *f, UINT ip);
void L3InsertArpTable(L3IF *f, UINT ip, UCHAR *mac);
void L3SendWaitingIp(L3IF *f, UCHAR *mac, UINT ip, L3ARPENTRY *a);
void L3PutPacket(L3IF *f, void *data, UINT size);
void L3RecvL2(L3IF *f, PKT *p);
void L3StoreIpPacketToIf(L3IF *src_if, L3IF *dst_if, L3PACKET *p);
void L3RecvIp(L3IF *f, PKT *p, bool self);
void L3PollingIpQueue(L3IF *f);
#endif // LAYER3_H