Andrew Boyson / net

A stack which works with or without an Mbed os library. Provides IPv4 or IPv6 with a full 1500 byte buffer.

Dependents:   oldheating gps motorhome heating

tcp/tcb.h

Committer:
andrewboyson
Date:
2019-09-29
Revision:
160:6a1d1d368f80
Parent:
159:3ebef2d02f7f
Child:
161:89609cf070b4

File content as of revision 160:6a1d1d368f80:

#ifndef TCB_H
#define TCB_H

#include <stdint.h>
#include <stdbool.h>

#define TCB_EMPTY          0
#define TCB_SYN_RECEIVED   1
#define TCB_ESTABLISHED    2
#define TCB_CLOSE_FIN_WAIT 3

struct tcb
{
    int      state;
    uint32_t timeSendsBeingAcked; //Used for RTO
    int      countSendsNotAcked;  //Used for RTO
    uint32_t timeLastRcvd;        //Used for detect idle links
    int      ipType;
    int      remArIndex;          //Unique per remote ip when taken with the ipType
    int      locIpScope;          //Unique per local ip
    uint16_t remPort;
    uint16_t locPort;
    uint32_t remMss;
    uint32_t window;
    
    uint32_t remIsn;
    uint32_t bytesRcvdFromRem;
    uint32_t bytesAckdToRem;
    bool     rcvdFin;
    
    uint32_t locIsn;
    uint32_t bytesSentToRem;
    uint32_t bytesAckdByRem;
    bool     sentFin;
};

extern uint32_t    TcbGetIsn     (void);
extern struct tcb* TcbGetExisting(int ipType, int remArIndex, int locIpScope, uint16_t remPort, uint16_t locPort);
extern struct tcb* TcbGetEmpty   (void);
extern struct tcb* TcbGetNext    (struct tcb* pTcb);
extern int         TcbGetId      (struct tcb* pTcb); //A unique identifier greater than 0. An id of zero means empty.
extern void        TcbInit       (void);

#endif