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125 lines
2.5 KiB
C
125 lines
2.5 KiB
C
/*
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* q_drr.c DRR.
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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: Patrick McHardy <kaber@trash.net>
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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: ... drr\n");
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}
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static void explain2(void)
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{
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fprintf(stderr, "Usage: ... drr quantum SIZE\n");
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}
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static int drr_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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while (argc) {
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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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}
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return 0;
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}
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static int drr_parse_class_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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struct rtattr *tail;
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__u32 tmp;
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tail = NLMSG_TAIL(n);
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addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
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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(&tmp, *argv)) {
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fprintf(stderr, "Illegal \"quantum\"\n");
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return -1;
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}
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addattr_l(n, 1024, TCA_DRR_QUANTUM, &tmp, sizeof(tmp));
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} else if (strcmp(*argv, "help") == 0) {
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explain2();
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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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explain2();
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return -1;
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}
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argc--; argv++;
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}
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tail->rta_len = (void *) NLMSG_TAIL(n) - (void *)tail;
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return 0;
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}
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static int drr_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
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{
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struct rtattr *tb[TCA_DRR_MAX + 1];
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SPRINT_BUF(b1);
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if (opt == NULL)
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return 0;
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parse_rtattr_nested(tb, TCA_DRR_MAX, opt);
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if (tb[TCA_DRR_QUANTUM])
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fprintf(f, "quantum %s ",
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sprint_size(rta_getattr_u32(tb[TCA_DRR_QUANTUM]), b1));
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return 0;
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}
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static int drr_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats)
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{
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struct tc_drr_stats *x;
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SPRINT_BUF(b1);
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if (xstats == NULL)
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return 0;
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if (RTA_PAYLOAD(xstats) < sizeof(*x))
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return -1;
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x = RTA_DATA(xstats);
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fprintf(f, " deficit %s ", sprint_size(x->deficit, b1));
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return 0;
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}
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struct qdisc_util drr_qdisc_util = {
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.id = "drr",
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.parse_qopt = drr_parse_opt,
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.print_qopt = drr_print_opt,
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.print_xstats = drr_print_xstats,
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.parse_copt = drr_parse_class_opt,
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.print_copt = drr_print_opt,
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};
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