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102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/*
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* q_fifo.c FIFO.
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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 <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: ... <[p|b]fifo | pfifo_head_drop> [ limit NUMBER ]\n");
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}
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static int fifo_parse_opt(struct qdisc_util *qu, int argc, char **argv,
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struct nlmsghdr *n, const char *dev)
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{
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int ok = 0;
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struct tc_fifo_qopt opt = {};
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while (argc > 0) {
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if (strcmp(*argv, "limit") == 0) {
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NEXT_ARG();
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if (get_size(&opt.limit, *argv)) {
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fprintf(stderr, "%s: Illegal value for \"limit\": \"%s\"\n", qu->id, *argv);
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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, "%s: unknown parameter \"%s\"\n", qu->id, *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 fifo_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
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{
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struct tc_fifo_qopt *qopt;
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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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if (strcmp(qu->id, "bfifo") == 0) {
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SPRINT_BUF(b1);
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fprintf(f, "limit %s", sprint_size(qopt->limit, b1));
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} else
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fprintf(f, "limit %up", qopt->limit);
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return 0;
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}
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struct qdisc_util bfifo_qdisc_util = {
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.id = "bfifo",
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.parse_qopt = fifo_parse_opt,
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.print_qopt = fifo_print_opt,
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};
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struct qdisc_util pfifo_qdisc_util = {
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.id = "pfifo",
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.parse_qopt = fifo_parse_opt,
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.print_qopt = fifo_print_opt,
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};
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struct qdisc_util pfifo_head_drop_qdisc_util = {
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.id = "pfifo_head_drop",
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.parse_qopt = fifo_parse_opt,
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.print_qopt = fifo_print_opt,
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};
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extern int prio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt);
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struct qdisc_util pfifo_fast_qdisc_util = {
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.id = "pfifo_fast",
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.print_qopt = prio_print_opt,
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};
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