tc/q_multiq.c

   1 /*
   2  * q_multiq.c           Multiqueue aware qdisc
   3  *
   4  * Copyright (c) 2008, Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  17  * Place - Suite 330, Boston, MA 02111-1307 USA.
  18  *
  19  * Author: Alexander Duyck <alexander.h.duyck@intel.com>
  20  *
  21  * Original Authors:    PJ Waskiewicz, <peter.p.waskiewicz.jr@intel.com> (RR)
  22  *                      Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> (from PRIO)
  23  *
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <unistd.h>
  29 #include <syslog.h>
  30 #include <fcntl.h>
  31 #include <sys/socket.h>
  32 #include <netinet/in.h>
  33 #include <arpa/inet.h>
  34 #include <string.h>
  35
  36 #include "utils.h"
  37 #include "tc_util.h"
  38
  39 static void explain(void)
  40 {
  41         fprintf(stderr, "Usage: ... multiq [help]\n");
  42 }
  43
  44 static int multiq_parse_opt(struct qdisc_util *qu, int argc, char **argv,
  45                             struct nlmsghdr *n)
  46 {
  47         struct tc_multiq_qopt opt;
  48
  49         if (argc) {
  50                 if (strcmp(*argv, "help") == 0) {
  51                         explain();
  52                         return -1;
  53                 } else {
  54                         fprintf(stderr, "What is \"%s\"?\n", *argv);
  55                         explain();
  56                         return -1;
  57                 }
  58         }
  59
  60         addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
  61         return 0;
  62 }
  63
  64 int multiq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
  65 {
  66         struct tc_multiq_qopt *qopt;
  67
  68         if (opt == NULL)
  69                 return 0;
  70         if (RTA_PAYLOAD(opt) < sizeof(*qopt))
  71                 return 0;
  72
  73         qopt = RTA_DATA(opt);
  74
  75         fprintf(f, "bands %u/%u ", qopt->bands, qopt->max_bands);
  76
  77         return 0;
  78 }
  79
  80 struct qdisc_util multiq_qdisc_util = {
  81         .id             = "multiq",
  82         .parse_qopt     = multiq_parse_opt,
  83         .print_qopt     = multiq_print_opt,
  84 };