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/*
* q_sfq.c SFQ.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include "utils.h"
#include "tc_util.h"
static void explain(void)
{
fprintf(stderr, "Usage: ... sfq [ limit NUMBER ] [ perturb SECS ] [ quantum BYTES ]\n");
}
#define usage() return(-1)
static int sfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
{
int ok=0;
struct tc_sfq_qopt opt;
memset(&opt, 0, sizeof(opt));
while (argc > 0) {
if (strcmp(*argv, "quantum") == 0) {
NEXT_ARG();
if (get_size(&opt.quantum, *argv)) {
fprintf(stderr, "Illegal \"limit\"\n");
return -1;
}
ok++;
} else if (strcmp(*argv, "perturb") == 0) {
NEXT_ARG();
if (get_integer(&opt.perturb_period, *argv, 0)) {
fprintf(stderr, "Illegal \"perturb\"\n");
return -1;
}
ok++;
} else if (strcmp(*argv, "limit") == 0) {
NEXT_ARG();
if (get_u32(&opt.limit, *argv, 0)) {
fprintf(stderr, "Illegal \"limit\"\n");
return -1;
}
if (opt.limit < 2) {
fprintf(stderr, "Illegal \"limit\", must be > 1\n");
return -1;
}
ok++;
} else if (strcmp(*argv, "help") == 0) {
explain();
return -1;
} else {
fprintf(stderr, "What is \"%s\"?\n", *argv);
explain();
return -1;
}
argc--; argv++;
}
if (ok)
addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
return 0;
}
static int sfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
struct tc_sfq_qopt *qopt;
SPRINT_BUF(b1);
if (opt == NULL)
return 0;
if (RTA_PAYLOAD(opt) < sizeof(*qopt))
return -1;
qopt = RTA_DATA(opt);
fprintf(f, "limit %up ", qopt->limit);
fprintf(f, "quantum %s ", sprint_size(qopt->quantum, b1));
if (show_details) {
fprintf(f, "flows %u/%u ", qopt->flows, qopt->divisor);
}
if (qopt->perturb_period)
fprintf(f, "perturb %dsec ", qopt->perturb_period);
return 0;
}
struct qdisc_util sfq_qdisc_util = {
.id = "sfq",
.parse_qopt = sfq_parse_opt,
.print_qopt = sfq_print_opt,
};
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