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/*
* q_rr.c RR.
*
* 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: PJ Waskiewicz, <peter.p.waskiewicz.jr@intel.com>
* Original Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> (from PRIO)
*/
#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: ... rr bands NUMBER priomap P1 P2... [multiqueue]\n");
}
static int rr_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
{
int pmap_mode = 0;
int idx = 0;
struct tc_prio_qopt opt = {3, { 1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 } };
struct rtattr *nest;
unsigned char mq = 0;
while (argc > 0) {
if (strcmp(*argv, "bands") == 0) {
if (pmap_mode)
explain();
NEXT_ARG();
if (get_integer(&opt.bands, *argv, 10)) {
fprintf(stderr, "Illegal \"bands\"\n");
return -1;
}
} else if (strcmp(*argv, "priomap") == 0) {
if (pmap_mode) {
fprintf(stderr, "Error: duplicate priomap\n");
return -1;
}
pmap_mode = 1;
} else if (strcmp(*argv, "help") == 0) {
explain();
return -1;
} else if (strcmp(*argv, "multiqueue") == 0) {
mq = 1;
} else {
unsigned int band;
if (!pmap_mode) {
fprintf(stderr, "What is \"%s\"?\n", *argv);
explain();
return -1;
}
if (get_unsigned(&band, *argv, 10)) {
fprintf(stderr, "Illegal \"priomap\" element\n");
return -1;
}
if (band > opt.bands) {
fprintf(stderr, "\"priomap\" element is out of bands\n");
return -1;
}
if (idx > TC_PRIO_MAX) {
fprintf(stderr, "\"priomap\" index > TC_RR_MAX=%u\n", TC_PRIO_MAX);
return -1;
}
opt.priomap[idx++] = band;
}
argc--; argv++;
}
nest = addattr_nest_compat(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
if (mq)
addattr_l(n, 1024, TCA_PRIO_MQ, NULL, 0);
addattr_nest_compat_end(n, nest);
return 0;
}
static int rr_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
int i;
struct tc_prio_qopt *qopt;
struct rtattr *tb[TCA_PRIO_MAX + 1];
if (opt == NULL)
return 0;
if (parse_rtattr_nested_compat(tb, TCA_PRIO_MAX, opt, qopt,
sizeof(*qopt)))
return -1;
fprintf(f, "bands %u priomap ", qopt->bands);
for (i = 0; i <= TC_PRIO_MAX; i++)
fprintf(f, " %d", qopt->priomap[i]);
if (tb[TCA_PRIO_MQ])
fprintf(f, " multiqueue: %s ",
rta_getattr_u8(tb[TCA_PRIO_MQ]) ? "on" : "off");
return 0;
}
struct qdisc_util rr_qdisc_util = {
.id = "rr",
.parse_qopt = rr_parse_opt,
.print_qopt = rr_print_opt,
};
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