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https://git.kernel.org/pub/scm/network/iproute2/iproute2.git
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108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
/*
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* q_sfq.c SFQ.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <fcntl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <string.h>
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#include "utils.h"
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#include "tc_util.h"
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static void explain(void)
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{
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fprintf(stderr, "Usage: ... sfq [ limit NUMBER ] [ perturb SECS ] [ quantum BYTES ]\n");
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}
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#define usage() return(-1)
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static int sfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
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{
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int ok=0;
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struct tc_sfq_qopt opt;
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memset(&opt, 0, sizeof(opt));
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while (argc > 0) {
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if (strcmp(*argv, "quantum") == 0) {
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NEXT_ARG();
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if (get_size(&opt.quantum, *argv)) {
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fprintf(stderr, "Illegal \"limit\"\n");
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return -1;
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}
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ok++;
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} else if (strcmp(*argv, "perturb") == 0) {
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NEXT_ARG();
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if (get_integer(&opt.perturb_period, *argv, 0)) {
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fprintf(stderr, "Illegal \"perturb\"\n");
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return -1;
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}
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ok++;
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} else if (strcmp(*argv, "limit") == 0) {
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NEXT_ARG();
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if (get_u32(&opt.limit, *argv, 0)) {
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fprintf(stderr, "Illegal \"limit\"\n");
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return -1;
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}
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if (opt.limit < 2) {
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fprintf(stderr, "Illegal \"limit\", must be > 1\n");
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return -1;
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}
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ok++;
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} else if (strcmp(*argv, "help") == 0) {
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explain();
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return -1;
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} else {
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fprintf(stderr, "What is \"%s\"?\n", *argv);
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explain();
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return -1;
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}
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argc--; argv++;
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}
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if (ok)
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addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
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return 0;
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}
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static int sfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
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{
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struct tc_sfq_qopt *qopt;
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SPRINT_BUF(b1);
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if (opt == NULL)
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return 0;
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if (RTA_PAYLOAD(opt) < sizeof(*qopt))
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return -1;
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qopt = RTA_DATA(opt);
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fprintf(f, "limit %up ", qopt->limit);
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fprintf(f, "quantum %s ", sprint_size(qopt->quantum, b1));
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if (show_details) {
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fprintf(f, "flows %u/%u ", qopt->flows, qopt->divisor);
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}
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if (qopt->perturb_period)
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fprintf(f, "perturb %dsec ", qopt->perturb_period);
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return 0;
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}
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struct qdisc_util sfq_qdisc_util = {
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.id = "sfq",
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.parse_qopt = sfq_parse_opt,
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.print_qopt = sfq_print_opt,
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};
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