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.c@200:5acbc41bf469, 2021-05-20 (annotated)

Committer:
andrewboyson
Date:
Thu May 20 14:32:52 2021 +0000
Revision:
200:5acbc41bf469
Parent:
168:59d286f933a0 
Increased number of arp entries from 20 to 30 to accommodate the number of WIZ devices plus a few incoming port 80 calls from the internet.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andrewboyson 61:aad055f1b0d1 1 #include <stdint.h>
andrewboyson 61:aad055f1b0d1 2
andrewboyson 161:89609cf070b4 3 #include "log.h"
andrewboyson 161:89609cf070b4 4 #include "tcp.h"
andrewboyson 161:89609cf070b4 5 #include "tcb.h"
andrewboyson 161:89609cf070b4 6 #include "http.h"
andrewboyson 161:89609cf070b4 7 #include "mstimer.h"
andrewboyson 52:fbc5a46b5e16 8
andrewboyson 168:59d286f933a0 9 #define TCB_COUNT 10
andrewboyson 10:f0854784e960 10
andrewboyson 10:f0854784e960 11 struct tcb tcbs[TCB_COUNT];
andrewboyson 10:f0854784e960 12
andrewboyson 10:f0854784e960 13 uint32_t TcbGetIsn()
andrewboyson 10:f0854784e960 14 {
andrewboyson 10:f0854784e960 15 static uint32_t isn = 0;
andrewboyson 10:f0854784e960 16 isn += 100000; //Gives each tcb 100,000 packets and won't repeat before 42,940 tcbs.
andrewboyson 10:f0854784e960 17 return isn;
andrewboyson 10:f0854784e960 18 }
andrewboyson 80:4ef1500fca1d 19 struct tcb* TcbGetExisting(int ipType, int remArIndex, int locIpScope, uint16_t remPort, uint16_t locPort)
andrewboyson 10:f0854784e960 20 {
andrewboyson 10:f0854784e960 21 for (int i = 0; i < TCB_COUNT; i++)
andrewboyson 10:f0854784e960 22 {
andrewboyson 10:f0854784e960 23 struct tcb* pTcb = tcbs + i;
andrewboyson 78:9d8fc88df405 24 if (pTcb->state &&
andrewboyson 78:9d8fc88df405 25 pTcb->ipType == ipType &&
andrewboyson 78:9d8fc88df405 26 pTcb->remArIndex == remArIndex &&
andrewboyson 80:4ef1500fca1d 27 pTcb->locIpScope == locIpScope &&
andrewboyson 80:4ef1500fca1d 28 pTcb->remPort == remPort &&
andrewboyson 80:4ef1500fca1d 29 pTcb->locPort == locPort) return pTcb;
andrewboyson 10:f0854784e960 30 }
andrewboyson 10:f0854784e960 31 return NULL;
andrewboyson 10:f0854784e960 32 }
andrewboyson 10:f0854784e960 33 struct tcb* TcbGetEmpty()
andrewboyson 10:f0854784e960 34 {
andrewboyson 10:f0854784e960 35 for (int i = 0; i < TCB_COUNT; i++)
andrewboyson 10:f0854784e960 36 {
andrewboyson 10:f0854784e960 37 struct tcb* pTcb = tcbs + i;
andrewboyson 57:e0fb648acf48 38 if (pTcb->state == TCB_EMPTY) return pTcb;
andrewboyson 10:f0854784e960 39 }
andrewboyson 10:f0854784e960 40 return NULL;
andrewboyson 10:f0854784e960 41 }
andrewboyson 83:08c983006a6e 42 struct tcb* TcbGetNext(struct tcb* pTcb)
andrewboyson 74:c3756bfa960e 43 {
andrewboyson 83:08c983006a6e 44 if (!pTcb) return tcbs; //Initialise if passed NULL
andrewboyson 83:08c983006a6e 45 ++pTcb; //Increment
andrewboyson 83:08c983006a6e 46 if (pTcb < tcbs + TCB_COUNT) return pTcb;
andrewboyson 83:08c983006a6e 47 else return tcbs;
andrewboyson 83:08c983006a6e 48
andrewboyson 74:c3756bfa960e 49 }
andrewboyson 161:89609cf070b4 50 void TcbSendAjax()
andrewboyson 161:89609cf070b4 51 {
andrewboyson 161:89609cf070b4 52 for (int i = 0; i < TCB_COUNT; i++)
andrewboyson 161:89609cf070b4 53 {
andrewboyson 161:89609cf070b4 54 struct tcb* pTcb = tcbs + i;
andrewboyson 161:89609cf070b4 55 if (pTcb->state)
andrewboyson 161:89609cf070b4 56 {
andrewboyson 162:fe50a1dcd043 57 HttpAddByteAsHex (pTcb->state); HttpAddChar('\t');
andrewboyson 161:89609cf070b4 58 HttpAddInt32AsHex(MsTimerCount - pTcb->timeLastRcvd); HttpAddChar('\t');
andrewboyson 161:89609cf070b4 59 HttpAddInt16AsHex(pTcb->ipType); HttpAddChar('\t');
andrewboyson 161:89609cf070b4 60 HttpAddInt32AsHex(pTcb->remArIndex); HttpAddChar('\t');
andrewboyson 162:fe50a1dcd043 61 HttpAddInt16AsHex(pTcb->locPort); HttpAddChar('\t');
andrewboyson 162:fe50a1dcd043 62 HttpAddInt16AsHex(pTcb->remPort); HttpAddChar('\t');
andrewboyson 162:fe50a1dcd043 63 HttpAddInt32AsHex(pTcb->bytesRcvdFromRem); HttpAddChar('\t');
andrewboyson 164:84b20bcd0941 64 HttpAddInt32AsHex(pTcb->bytesSentToRem); HttpAddChar('\n');
andrewboyson 161:89609cf070b4 65 }
andrewboyson 161:89609cf070b4 66 }
andrewboyson 161:89609cf070b4 67 }
andrewboyson 161:89609cf070b4 68
andrewboyson 156:be12b8fd5b21 69 int TcbGetId(struct tcb* pTcb) //0 means none
andrewboyson 156:be12b8fd5b21 70 {
andrewboyson 156:be12b8fd5b21 71 return pTcb - tcbs + 1;
andrewboyson 156:be12b8fd5b21 72 }
andrewboyson 10:f0854784e960 73 void TcbInit()
andrewboyson 10:f0854784e960 74 {
andrewboyson 57:e0fb648acf48 75 for (int i = 0; i < TCB_COUNT; i++) tcbs[i].state = TCB_EMPTY;
andrewboyson 52:fbc5a46b5e16 76 }