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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* q_fifo.c FIFO.
*
* 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: ... <[p|b]fifo | pfifo_head_drop> [ limit NUMBER ]\n");
}
static int fifo_parse_opt(struct qdisc_util *qu, int argc, char **argv,
struct nlmsghdr *n, const char *dev)
{
int ok = 0;
struct tc_fifo_qopt opt = {};
while (argc > 0) {
if (strcmp(*argv, "limit") == 0) {
NEXT_ARG();
if (get_size(&opt.limit, *argv)) {
fprintf(stderr, "%s: Illegal value for \"limit\": \"%s\"\n", qu->id, *argv);
return -1;
}
ok++;
} else if (strcmp(*argv, "help") == 0) {
explain();
return -1;
} else {
fprintf(stderr, "%s: unknown parameter \"%s\"\n", qu->id, *argv);
explain();
return -1;
}
argc--; argv++;
}
if (ok)
addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
return 0;
}
static int fifo_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
struct tc_fifo_qopt *qopt;
if (opt == NULL)
return 0;
if (RTA_PAYLOAD(opt) < sizeof(*qopt))
return -1;
qopt = RTA_DATA(opt);
if (strcmp(qu->id, "bfifo") == 0)
print_size(PRINT_ANY, "limit", "limit %s", qopt->limit);
else
print_uint(PRINT_ANY, "limit", "limit %up", qopt->limit);
return 0;
}
struct qdisc_util bfifo_qdisc_util = {
.id = "bfifo",
.parse_qopt = fifo_parse_opt,
.print_qopt = fifo_print_opt,
};
struct qdisc_util pfifo_qdisc_util = {
.id = "pfifo",
.parse_qopt = fifo_parse_opt,
.print_qopt = fifo_print_opt,
};
struct qdisc_util pfifo_head_drop_qdisc_util = {
.id = "pfifo_head_drop",
.parse_qopt = fifo_parse_opt,
.print_qopt = fifo_print_opt,
};
struct qdisc_util pfifo_fast_qdisc_util = {
.id = "pfifo_fast",
.print_qopt = prio_print_opt,
};
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