mirror of
https://github.com/RIOT-OS/RIOT.git
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bb580d1c4f
- fixed a bug where the tcp retransmit timer triggered even before beeing ready to receive an ACK - fixed a bug where MSS option was added by mistake because checking for the appropriate flag was broken
60 lines
1.0 KiB
C
60 lines
1.0 KiB
C
/*
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* common.c
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*
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* Created on: 05.10.2011
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* Author: Oliver
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*/
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#include <stdio.h>
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#include <thread.h>
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#include <string.h>
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#include "net_help.h"
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void printArrayRange(uint8_t *array, uint16_t len, char *str)
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{
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int i = 0;
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printf("-------------%s-------------\n", str);
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for (i = 0; i < len; i++)
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{
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printf("%#x ", *(array+i));
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}
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printf("\n-----------%u-------------\n", len);
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}
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uint16_t csum(uint16_t sum, uint8_t *buf, uint16_t len)
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{
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int count;
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uint16_t carry;
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count = len >> 1;
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if(count)
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{
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if(count)
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{
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carry = 0;
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do
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{
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uint16_t t = (*buf << 8) + *(buf+1);
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count--;
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buf += 2;
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sum += carry;
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sum += t;
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carry = (t > sum);
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} while(count);
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sum += carry;
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}
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}
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if(len & 1)
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{
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uint16_t u = (*buf << 8);
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sum += (*buf << 8);
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if(sum < u)
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{
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sum++;
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}
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}
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return sum;
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}
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