tcb.h

00001 #ifndef TCB_H
00002 #define TCB_H
00003 
00004 #include <stdint.h>
00005 #include <stdbool.h>
00006 
00007 #define TCB_EMPTY          0
00008 #define TCB_SYN_RECEIVED   1
00009 #define TCB_ESTABLISHED    2
00010 #define TCB_CLOSE_FIN_WAIT 3
00011 
00012 struct tcb
00013 {
00014     int      state;
00015     uint32_t timeSendsBeingAcked; //Used for RTO
00016     int      countSendsNotAcked;  //Used for RTO
00017     uint32_t timeLastRcvd;        //Used for detect idle links
00018     int      ipType;
00019     int      remArIndex;          //Unique per remote ip when taken with the ipType
00020     int      locIpScope;          //Unique per local ip
00021     uint16_t remPort;
00022     uint16_t locPort;
00023     uint32_t remMss;
00024     uint32_t window;
00025     
00026     uint32_t remIsn;
00027     uint32_t bytesRcvdFromRem;
00028     uint32_t bytesAckdToRem;
00029     bool     rcvdFin;
00030     
00031     uint32_t locIsn;
00032     uint32_t bytesSentToRem;
00033     uint32_t bytesAckdByRem;
00034     bool     sentFin;
00035 };
00036 
00037 extern uint32_t    TcbGetIsn     (void);
00038 extern struct tcb* TcbGetExisting(int ipType, int remArIndex, int locIpScope, uint16_t remPort, uint16_t locPort);
00039 extern struct tcb* TcbGetEmpty   (void);
00040 extern struct tcb* TcbGetNext    (struct tcb* pTcb);
00041 extern int         TcbGetId      (struct tcb* pTcb); //A unique identifier greater than 0. An id of zero means empty.
00042 extern void        TcbInit       (void);
00043 extern void        TcbSendAjax   (void);
00044 
00045 #endif