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      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 (at) intel.com>
     20  *
     21  * Original Authors:	PJ Waskiewicz, <peter.p.waskiewicz.jr (at) intel.com> (RR)
     22  * 			Alexey Kuznetsov, <kuznet (at) 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 };
     85