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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> | |
292ce96b PW |
16 | #include <fcntl.h> |
17 | #include <sys/socket.h> | |
18 | #include <netinet/in.h> | |
19 | #include <arpa/inet.h> | |
20 | #include <string.h> | |
21 | ||
22 | #include "utils.h" | |
23 | #include "tc_util.h" | |
24 | ||
25 | static void explain(void) | |
26 | { | |
27 | fprintf(stderr, "Usage: ... rr bands NUMBER priomap P1 P2... [multiqueue]\n"); | |
28 | } | |
29 | ||
292ce96b | 30 | |
927e3cfb | 31 | static int rr_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n, const char *dev) |
292ce96b | 32 | { |
292ce96b PW |
33 | int pmap_mode = 0; |
34 | int idx = 0; | |
32a121cb | 35 | struct tc_prio_qopt opt = {3, { 1, 2, 2, 2, 1, 2, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 } }; |
292ce96b PW |
36 | struct rtattr *nest; |
37 | unsigned char mq = 0; | |
38 | ||
39 | while (argc > 0) { | |
40 | if (strcmp(*argv, "bands") == 0) { | |
41 | if (pmap_mode) | |
42 | explain(); | |
43 | NEXT_ARG(); | |
44 | if (get_integer(&opt.bands, *argv, 10)) { | |
45 | fprintf(stderr, "Illegal \"bands\"\n"); | |
46 | return -1; | |
47 | } | |
292ce96b PW |
48 | } else if (strcmp(*argv, "priomap") == 0) { |
49 | if (pmap_mode) { | |
50 | fprintf(stderr, "Error: duplicate priomap\n"); | |
51 | return -1; | |
52 | } | |
53 | pmap_mode = 1; | |
54 | } else if (strcmp(*argv, "help") == 0) { | |
55 | explain(); | |
56 | return -1; | |
57 | } else if (strcmp(*argv, "multiqueue") == 0) { | |
58 | mq = 1; | |
59 | } else { | |
32a121cb SH |
60 | unsigned int band; |
61 | ||
292ce96b PW |
62 | if (!pmap_mode) { |
63 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
64 | explain(); | |
65 | return -1; | |
66 | } | |
67 | if (get_unsigned(&band, *argv, 10)) { | |
68 | fprintf(stderr, "Illegal \"priomap\" element\n"); | |
69 | return -1; | |
70 | } | |
71 | if (band > opt.bands) { | |
72 | fprintf(stderr, "\"priomap\" element is out of bands\n"); | |
73 | return -1; | |
74 | } | |
75 | if (idx > TC_PRIO_MAX) { | |
76 | fprintf(stderr, "\"priomap\" index > TC_RR_MAX=%u\n", TC_PRIO_MAX); | |
77 | return -1; | |
78 | } | |
79 | opt.priomap[idx++] = band; | |
80 | } | |
81 | argc--; argv++; | |
82 | } | |
83 | ||
84 | nest = addattr_nest_compat(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)); | |
85 | if (mq) | |
86 | addattr_l(n, 1024, TCA_PRIO_MQ, NULL, 0); | |
87 | addattr_nest_compat_end(n, nest); | |
88 | return 0; | |
89 | } | |
90 | ||
d1f28cf1 | 91 | static int rr_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) |
292ce96b PW |
92 | { |
93 | int i; | |
94 | struct tc_prio_qopt *qopt; | |
95 | struct rtattr *tb[TCA_PRIO_MAX + 1]; | |
96 | ||
97 | if (opt == NULL) | |
98 | return 0; | |
99 | ||
100 | if (parse_rtattr_nested_compat(tb, TCA_PRIO_MAX, opt, qopt, | |
101 | sizeof(*qopt))) | |
102 | return -1; | |
103 | ||
104 | fprintf(f, "bands %u priomap ", qopt->bands); | |
32a121cb | 105 | for (i = 0; i <= TC_PRIO_MAX; i++) |
292ce96b PW |
106 | fprintf(f, " %d", qopt->priomap[i]); |
107 | ||
108 | if (tb[TCA_PRIO_MQ]) | |
109 | fprintf(f, " multiqueue: %s ", | |
ff24746c | 110 | rta_getattr_u8(tb[TCA_PRIO_MQ]) ? "on" : "off"); |
292ce96b PW |
111 | |
112 | return 0; | |
113 | } | |
114 | ||
115 | struct qdisc_util rr_qdisc_util = { | |
32a121cb | 116 | .id = "rr", |
292ce96b PW |
117 | .parse_qopt = rr_parse_opt, |
118 | .print_qopt = rr_print_opt, | |
119 | }; |