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/*
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* q_cbs.c CBS.
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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: Vinicius Costa Gomes <vinicius.gomes@intel.com>
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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,
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"Usage: ... cbs hicredit BYTES locredit BYTES sendslope BPS idleslope BPS\n"
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" [offload 0|1]\n");
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}
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static void explain1(const char *arg, const char *val)
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{
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fprintf(stderr, "cbs: illegal value for \"%s\": \"%s\"\n", arg, val);
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}
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static int cbs_parse_opt(struct qdisc_util *qu, int argc,
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char **argv, struct nlmsghdr *n, const char *dev)
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{
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struct tc_cbs_qopt opt = {};
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struct rtattr *tail;
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while (argc > 0) {
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if (matches(*argv, "offload") == 0) {
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NEXT_ARG();
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if (opt.offload) {
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fprintf(stderr, "cbs: duplicate \"offload\" specification\n");
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return -1;
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}
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if (get_u8(&opt.offload, *argv, 0)) {
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explain1("offload", *argv);
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return -1;
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}
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} else if (matches(*argv, "hicredit") == 0) {
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NEXT_ARG();
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if (opt.hicredit) {
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fprintf(stderr, "cbs: duplicate \"hicredit\" specification\n");
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return -1;
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}
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if (get_s32(&opt.hicredit, *argv, 0)) {
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explain1("hicredit", *argv);
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return -1;
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}
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} else if (matches(*argv, "locredit") == 0) {
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NEXT_ARG();
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if (opt.locredit) {
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fprintf(stderr, "cbs: duplicate \"locredit\" specification\n");
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return -1;
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}
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if (get_s32(&opt.locredit, *argv, 0)) {
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explain1("locredit", *argv);
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return -1;
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}
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} else if (matches(*argv, "sendslope") == 0) {
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NEXT_ARG();
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if (opt.sendslope) {
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fprintf(stderr, "cbs: duplicate \"sendslope\" specification\n");
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return -1;
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}
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if (get_s32(&opt.sendslope, *argv, 0)) {
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explain1("sendslope", *argv);
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return -1;
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}
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} else if (matches(*argv, "idleslope") == 0) {
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NEXT_ARG();
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if (opt.idleslope) {
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fprintf(stderr, "cbs: duplicate \"idleslope\" specification\n");
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return -1;
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}
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if (get_s32(&opt.idleslope, *argv, 0)) {
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explain1("idleslope", *argv);
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return -1;
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}
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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, "cbs: unknown parameter \"%s\"\n", *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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tail = addattr_nest(n, 1024, TCA_OPTIONS);
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addattr_l(n, 2024, TCA_CBS_PARMS, &opt, sizeof(opt));
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addattr_nest_end(n, tail);
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return 0;
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}
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static int cbs_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
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{
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struct rtattr *tb[TCA_CBS_MAX+1];
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struct tc_cbs_qopt *qopt;
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if (opt == NULL)
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return 0;
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parse_rtattr_nested(tb, TCA_CBS_MAX, opt);
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if (tb[TCA_CBS_PARMS] == NULL)
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return -1;
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qopt = RTA_DATA(tb[TCA_CBS_PARMS]);
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if (RTA_PAYLOAD(tb[TCA_CBS_PARMS]) < sizeof(*qopt))
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return -1;
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fprintf(f, "hicredit %d ", qopt->hicredit);
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fprintf(f, "locredit %d ", qopt->locredit);
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fprintf(f, "sendslope %d ", qopt->sendslope);
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fprintf(f, "idleslope %d ", qopt->idleslope);
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fprintf(f, "offload %d ", qopt->offload);
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return 0;
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}
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struct qdisc_util cbs_qdisc_util = {
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.id = "cbs",
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.parse_qopt = cbs_parse_opt,
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.print_qopt = cbs_print_opt,
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};
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