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* pktsize - reports packet sizes on first few packets
* Author: Paweł Foremski
* Copyright (c) 2012 IITiS PAN Gliwice <>
* Licensed under GNU GPL v. 3
#include "flowcalc.h"
struct flow {
struct pks {
int cnt;
int size[5];
} up;
struct pks down;
void header()
printf("%%%% pktsize 0.1\n");
printf("%% pks_1_up: size of 1st packet up\n");
printf("%% pks_2_up: size of 2nd packet up\n");
printf("%% pks_3_up: size of 3rd packet up\n");
printf("%% pks_4_up: size of 4th packet up\n");
printf("%% pks_5_up: size of 5th packet up\n");
printf("%% pks_1_down: size of 1st packet down\n");
printf("%% pks_2_down: size of 2nd packet down\n");
printf("%% pks_3_down: size of 3rd packet down\n");
printf("%% pks_4_down: size of 4th packet down\n");
printf("%% pks_5_down: size of 5th packet down\n");
printf("@attribute pks_1_up numeric\n");
printf("@attribute pks_2_up numeric\n");
printf("@attribute pks_3_up numeric\n");
printf("@attribute pks_4_up numeric\n");
printf("@attribute pks_5_up numeric\n");
printf("@attribute pks_1_down numeric\n");
printf("@attribute pks_2_down numeric\n");
printf("@attribute pks_3_down numeric\n");
printf("@attribute pks_4_down numeric\n");
printf("@attribute pks_5_down numeric\n");
void pkt(struct lfc *lfc, void *plugin,
struct lfc_flow *lf, struct lfc_pkt *pkt, void *data)
struct flow *f = data;
/* done? */
if (pkt->up) {
if (f->up.cnt == 5) return;
} else {
if (f->down.cnt == 5) return;
/* packet useful? */
if (pkt->dup || pkt->psize == 0) return;
/* record! */
if (pkt->up) {
f->up.size[f->up.cnt++] = pkt->psize;
} else {
f->down.size[f->down.cnt++] = pkt->psize;
void flow(struct lfc *lfc, void *pdata,
struct lfc_flow *lf, void *data)
struct flow *f = data;
f->up.size[0], f->up.size[1], f->up.size[2],
f->up.size[3], f->up.size[4]);
f->down.size[0], f->down.size[1], f->down.size[2],
f->down.size[3], f->down.size[4]);
struct module module = {
.size = sizeof(struct flow),
.header = header,
.pkt = pkt,
.flow = flow