source: tools/tracereport/ecn_report.c @ d4336d5

#include <netdb.h>
#include <inttypes.h>
#include <lt_inttypes.h>
#include <stdio.h>
#include "libtrace.h"
#include "tracereport.h"

static stat_t ecn_stat[4][4] = {{{0,0}}} ;
static bool suppress[4] = {true,true,true,true};

void ecn_per_packet(struct libtrace_packet_t *packet)
{
        struct libtrace_ip *ip = trace_get_ip(packet);
        if (!ip)
                return;
        int dir = trace_get_direction(packet);
        if(dir < 0 || dir > 1)
                dir = 2;
        
        int ecn = ip->ip_tos;
        ecn &= 3;
        ecn_stat[dir][ecn].count++;
        ecn_stat[dir][ecn].bytes+=trace_get_wire_length(packet);
        suppress[dir] = false;
}

void ecn_suppress()
{
        int i;
        printf("%-20s","Direction:");
        //printf("%20s", " ");
        for(i=0;i<4;i++){
                if(!suppress[i]){
                        switch(i){
                                case 0:
                                        printf("\t%24s", "Outbound   ");
                                        break;
                                case 1:
                                        printf("\t%24s", "Inbound   ");
                                        break;
                                case 2:
                                        printf("\t%24s", "Undefined   ");
                                        break;
                                default:
                                        break;
                        }
                }
        }
        printf("\n");
        printf("%-20s","ECN");
        for(i=0;i<4;i++){
                if(!suppress[i]){
                        printf("\t%12s\t%12s", "bytes","packets");
                }
        }
        printf("\n");
}

void ecn_report(void)
{
        int i,j;
        printf("# ECN breakdown:\n");
        ecn_suppress();
        for(i=0;i<4;++i) {
                if (ecn_stat[0][i].count==0 && 
                        ecn_stat[1][i].count==0 && ecn_stat[2][i].count==0)
                        continue;
                printf("%20i:",i);
                for(j=0;j<4;j++){
                        if (ecn_stat[j][i].count==0){
                                if(!suppress[j])
                                        printf("\t%24s"," ");
                                continue;
                        }
                        printf("\t%12" PRIu64 "\t%12" PRIu64,
                                ecn_stat[j][i].bytes,
                                ecn_stat[j][i].count);
                }
                printf("\n");
        }
        
        int total = 0;
        for(i=0;i<4;i++){
                for(j=1;j<4;j++)
                        total += ecn_stat[i][j].count;
        }
        printf("%s: %i\n", "Total ECN", total);
}