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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* q_prio.c PRIO.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.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: ... prio bands NUMBER priomap P1 P2...[multiqueue]\n");
}
static int prio_parse_opt(struct qdisc_util *qu, int argc, char **argv,
struct nlmsghdr *n, const char *dev)
{
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, "multiqueue") == 0) {
mq = 1;
} else if (strcmp(*argv, "help") == 0) {
explain();
return -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_PRIO_MAX=%u\n", TC_PRIO_MAX);
return -1;
}
opt.priomap[idx++] = band;
}
argc--; argv++;
}
/*
if (pmap_mode) {
for (; idx < TC_PRIO_MAX; idx++)
opt.priomap[idx] = opt.priomap[TC_PRIO_BESTEFFORT];
}
*/
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;
}
int prio_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;
if (qopt == NULL)
return -1; /* missing data from kernel */
print_uint(PRINT_ANY, "bands", "bands %u ", qopt->bands);
open_json_array(PRINT_ANY, "priomap");
for (i = 0; i <= TC_PRIO_MAX; i++)
print_uint(PRINT_ANY, NULL, " %d", qopt->priomap[i]);
close_json_array(PRINT_ANY, "");
if (tb[TCA_PRIO_MQ])
print_string(PRINT_FP, NULL, " multiqueue: %s ",
rta_getattr_u8(tb[TCA_PRIO_MQ]) ? "on" : "off");
print_bool(PRINT_JSON, "multiqueue", NULL,
tb[TCA_PRIO_MQ] && rta_getattr_u8(tb[TCA_PRIO_MQ]));
return 0;
}
struct qdisc_util prio_qdisc_util = {
.id = "prio",
.parse_qopt = prio_parse_opt,
.print_qopt = prio_print_opt,
};
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