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292ce96b PW |
1 | /* |
2 | * q_rr.c RR. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: PJ Waskiewicz, <peter.p.waskiewicz.jr@intel.com> | |
10 | * Original Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> (from PRIO) | |
292ce96b PW |
11 | */ |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
16 | #include <syslog.h> | |
17 | #include <fcntl.h> | |
18 | #include <sys/socket.h> | |
19 | #include <netinet/in.h> | |
20 | #include <arpa/inet.h> | |
21 | #include <string.h> | |
22 | ||
23 | #include "utils.h" | |
24 | #include "tc_util.h" | |
25 | ||
26 | static void explain(void) | |
27 | { | |
28 | fprintf(stderr, "Usage: ... rr bands NUMBER priomap P1 P2... [multiqueue]\n"); | |
29 | } | |
30 | ||
292ce96b PW |
31 | |
32 | static int rr_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) | |
33 | { | |
292ce96b PW |
34 | int pmap_mode = 0; |
35 | int idx = 0; | |
32a121cb | 36 | struct tc_prio_qopt opt = {3, { 1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 } }; |
292ce96b PW |
37 | struct rtattr *nest; |
38 | unsigned char mq = 0; | |
39 | ||
40 | while (argc > 0) { | |
41 | if (strcmp(*argv, "bands") == 0) { | |
42 | if (pmap_mode) | |
43 | explain(); | |
44 | NEXT_ARG(); | |
45 | if (get_integer(&opt.bands, *argv, 10)) { | |
46 | fprintf(stderr, "Illegal \"bands\"\n"); | |
47 | return -1; | |
48 | } | |
292ce96b PW |
49 | } else if (strcmp(*argv, "priomap") == 0) { |
50 | if (pmap_mode) { | |
51 | fprintf(stderr, "Error: duplicate priomap\n"); | |
52 | return -1; | |
53 | } | |
54 | pmap_mode = 1; | |
55 | } else if (strcmp(*argv, "help") == 0) { | |
56 | explain(); | |
57 | return -1; | |
58 | } else if (strcmp(*argv, "multiqueue") == 0) { | |
59 | mq = 1; | |
60 | } else { | |
32a121cb SH |
61 | unsigned int band; |
62 | ||
292ce96b PW |
63 | if (!pmap_mode) { |
64 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
65 | explain(); | |
66 | return -1; | |
67 | } | |
68 | if (get_unsigned(&band, *argv, 10)) { | |
69 | fprintf(stderr, "Illegal \"priomap\" element\n"); | |
70 | return -1; | |
71 | } | |
72 | if (band > opt.bands) { | |
73 | fprintf(stderr, "\"priomap\" element is out of bands\n"); | |
74 | return -1; | |
75 | } | |
76 | if (idx > TC_PRIO_MAX) { | |
77 | fprintf(stderr, "\"priomap\" index > TC_RR_MAX=%u\n", TC_PRIO_MAX); | |
78 | return -1; | |
79 | } | |
80 | opt.priomap[idx++] = band; | |
81 | } | |
82 | argc--; argv++; | |
83 | } | |
84 | ||
85 | nest = addattr_nest_compat(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)); | |
86 | if (mq) | |
87 | addattr_l(n, 1024, TCA_PRIO_MQ, NULL, 0); | |
88 | addattr_nest_compat_end(n, nest); | |
89 | return 0; | |
90 | } | |
91 | ||
d1f28cf1 | 92 | static int rr_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) |
292ce96b PW |
93 | { |
94 | int i; | |
95 | struct tc_prio_qopt *qopt; | |
96 | struct rtattr *tb[TCA_PRIO_MAX + 1]; | |
97 | ||
98 | if (opt == NULL) | |
99 | return 0; | |
100 | ||
101 | if (parse_rtattr_nested_compat(tb, TCA_PRIO_MAX, opt, qopt, | |
102 | sizeof(*qopt))) | |
103 | return -1; | |
104 | ||
105 | fprintf(f, "bands %u priomap ", qopt->bands); | |
32a121cb | 106 | for (i = 0; i <= TC_PRIO_MAX; i++) |
292ce96b PW |
107 | fprintf(f, " %d", qopt->priomap[i]); |
108 | ||
109 | if (tb[TCA_PRIO_MQ]) | |
110 | fprintf(f, " multiqueue: %s ", | |
ff24746c | 111 | rta_getattr_u8(tb[TCA_PRIO_MQ]) ? "on" : "off"); |
292ce96b PW |
112 | |
113 | return 0; | |
114 | } | |
115 | ||
116 | struct qdisc_util rr_qdisc_util = { | |
32a121cb | 117 | .id = "rr", |
292ce96b PW |
118 | .parse_qopt = rr_parse_opt, |
119 | .print_qopt = rr_print_opt, | |
120 | }; |