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Diffstat (limited to 'src/Cedar/Layer3.h')
| -rw-r--r-- | src/Cedar/Layer3.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/Cedar/Layer3.h b/src/Cedar/Layer3.h new file mode 100644 index 00000000..eca95c5e --- /dev/null +++ b/src/Cedar/Layer3.h @@ -0,0 +1,229 @@ +// SoftEther VPN Source Code
+// Cedar Communication Module
+//
+// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
+//
+// Copyright (c) 2012-2014 Daiyuu Nobori.
+// Copyright (c) 2012-2014 SoftEther VPN Project, University of Tsukuba, Japan.
+// Copyright (c) 2012-2014 SoftEther Corporation.
+//
+// All Rights Reserved.
+//
+// http://www.softether.org/
+//
+// Author: Daiyuu Nobori
+// Comments: Tetsuo Sugiyama, Ph.D.
+//
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// version 2 as published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License version 2
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
+// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE THE SOFTWARE.
+//
+//
+// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN,
+// UNDER JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY,
+// MERGE, PUBLISH, DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS
+// SOFTWARE, THAT ANY JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS
+// SOFTWARE OR ITS CONTENTS, AGAINST US (SOFTETHER PROJECT, SOFTETHER
+// CORPORATION, DAIYUU NOBORI OR OTHER SUPPLIERS), OR ANY JURIDICAL
+// DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND OF USING, COPYING,
+// MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING, AND/OR
+// SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
+// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO
+// EXCLUSIVE JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO,
+// JAPAN. YOU MUST WAIVE ALL DEFENSES OF LACK OF PERSONAL JURISDICTION
+// AND FORUM NON CONVENIENS. PROCESS MAY BE SERVED ON EITHER PARTY IN
+// THE MANNER AUTHORIZED BY APPLICABLE LAW OR COURT RULE.
+//
+// USE ONLY IN JAPAN. DO NOT USE IT IN OTHER COUNTRIES. IMPORTING THIS
+// SOFTWARE INTO OTHER COUNTRIES IS AT YOUR OWN RISK. SOME COUNTRIES
+// PROHIBIT ENCRYPTED COMMUNICATIONS. USING THIS SOFTWARE IN OTHER
+// COUNTRIES MIGHT BE RESTRICTED.
+//
+//
+// DEAR SECURITY EXPERTS
+// ---------------------
+//
+// If you find a bug or a security vulnerability please kindly inform us
+// about the problem immediately so that we can fix the security problem
+// to protect a lot of users around the world as soon as possible.
+//
+// Our e-mail address for security reports is:
+// softether-vpn-security [at] softether.org
+//
+// Please note that the above e-mail address is not a technical support
+// inquiry address. If you need technical assistance, please visit
+// http://www.softether.org/ and ask your question on the users forum.
+//
+// Thank you for your cooperation.
+
+
+// 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
+
+
+
+
+// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
+// Department of Computer Science has dozens of overly-enthusiastic geeks.
+// Join us: http://www.tsukuba.ac.jp/english/admission/
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