| /* |
| * q_rr.c RR. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Authors: PJ Waskiewicz, <peter.p.waskiewicz.jr@intel.com> |
| * Original Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> (from PRIO) |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <syslog.h> |
| #include <fcntl.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <string.h> |
| |
| #include "utils.h" |
| #include "tc_util.h" |
| |
| static void explain(void) |
| { |
| fprintf(stderr, "Usage: ... rr bands NUMBER priomap P1 P2... [multiqueue]\n"); |
| } |
| |
| |
| static int rr_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) |
| { |
| int pmap_mode = 0; |
| int idx = 0; |
| struct tc_prio_qopt opt={3,{ 1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 }}; |
| struct rtattr *nest; |
| unsigned char mq = 0; |
| |
| while (argc > 0) { |
| if (strcmp(*argv, "bands") == 0) { |
| if (pmap_mode) |
| explain(); |
| NEXT_ARG(); |
| if (get_integer(&opt.bands, *argv, 10)) { |
| fprintf(stderr, "Illegal \"bands\"\n"); |
| return -1; |
| } |
| } else if (strcmp(*argv, "priomap") == 0) { |
| if (pmap_mode) { |
| fprintf(stderr, "Error: duplicate priomap\n"); |
| return -1; |
| } |
| pmap_mode = 1; |
| } else if (strcmp(*argv, "help") == 0) { |
| explain(); |
| return -1; |
| } else if (strcmp(*argv, "multiqueue") == 0) { |
| mq = 1; |
| } else { |
| unsigned band; |
| if (!pmap_mode) { |
| fprintf(stderr, "What is \"%s\"?\n", *argv); |
| explain(); |
| return -1; |
| } |
| if (get_unsigned(&band, *argv, 10)) { |
| fprintf(stderr, "Illegal \"priomap\" element\n"); |
| return -1; |
| } |
| if (band > opt.bands) { |
| fprintf(stderr, "\"priomap\" element is out of bands\n"); |
| return -1; |
| } |
| if (idx > TC_PRIO_MAX) { |
| fprintf(stderr, "\"priomap\" index > TC_RR_MAX=%u\n", TC_PRIO_MAX); |
| return -1; |
| } |
| opt.priomap[idx++] = band; |
| } |
| argc--; argv++; |
| } |
| |
| nest = addattr_nest_compat(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)); |
| if (mq) |
| addattr_l(n, 1024, TCA_PRIO_MQ, NULL, 0); |
| addattr_nest_compat_end(n, nest); |
| return 0; |
| } |
| |
| int rr_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) |
| { |
| int i; |
| struct tc_prio_qopt *qopt; |
| struct rtattr *tb[TCA_PRIO_MAX + 1]; |
| |
| if (opt == NULL) |
| return 0; |
| |
| if (parse_rtattr_nested_compat(tb, TCA_PRIO_MAX, opt, qopt, |
| sizeof(*qopt))) |
| return -1; |
| |
| fprintf(f, "bands %u priomap ", qopt->bands); |
| for (i=0; i <= TC_PRIO_MAX; i++) |
| fprintf(f, " %d", qopt->priomap[i]); |
| |
| if (tb[TCA_PRIO_MQ]) |
| fprintf(f, " multiqueue: %s ", |
| rta_getattr_u8(tb[TCA_PRIO_MQ]) ? "on" : "off"); |
| |
| return 0; |
| } |
| |
| struct qdisc_util rr_qdisc_util = { |
| .id = "rr", |
| .parse_qopt = rr_parse_opt, |
| .print_qopt = rr_print_opt, |
| }; |