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c86f3494 PM |
1 | /* |
2 | * q_drr.c DRR. | |
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: Patrick McHardy <kaber@trash.net> | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
c86f3494 PM |
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: ... drr\n"); | |
28 | } | |
29 | ||
30 | static void explain2(void) | |
31 | { | |
32 | fprintf(stderr, "Usage: ... drr quantum SIZE\n"); | |
33 | } | |
34 | ||
c86f3494 | 35 | |
859af0a5 SH |
36 | static int drr_parse_opt(struct qdisc_util *qu, int argc, char **argv, |
37 | struct nlmsghdr *n, const char *dev) | |
c86f3494 | 38 | { |
5582c0cf | 39 | while (argc) { |
c86f3494 PM |
40 | if (strcmp(*argv, "help") == 0) { |
41 | explain(); | |
42 | return -1; | |
43 | } else { | |
44 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
45 | explain(); | |
46 | return -1; | |
47 | } | |
c86f3494 PM |
48 | } |
49 | return 0; | |
50 | } | |
51 | ||
52 | static int drr_parse_class_opt(struct qdisc_util *qu, int argc, char **argv, | |
927e3cfb | 53 | struct nlmsghdr *n, const char *dev) |
c86f3494 PM |
54 | { |
55 | struct rtattr *tail; | |
56 | __u32 tmp; | |
57 | ||
c14f9d92 | 58 | tail = addattr_nest(n, 1024, TCA_OPTIONS); |
c86f3494 PM |
59 | |
60 | while (argc > 0) { | |
61 | if (strcmp(*argv, "quantum") == 0) { | |
62 | NEXT_ARG(); | |
63 | if (get_size(&tmp, *argv)) { | |
64 | fprintf(stderr, "Illegal \"quantum\"\n"); | |
65 | return -1; | |
66 | } | |
67 | addattr_l(n, 1024, TCA_DRR_QUANTUM, &tmp, sizeof(tmp)); | |
68 | } else if (strcmp(*argv, "help") == 0) { | |
69 | explain2(); | |
70 | return -1; | |
71 | } else { | |
72 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
73 | explain2(); | |
74 | return -1; | |
75 | } | |
76 | argc--; argv++; | |
77 | } | |
78 | ||
c14f9d92 | 79 | addattr_nest_end(n, tail); |
c86f3494 PM |
80 | return 0; |
81 | } | |
82 | ||
83 | static int drr_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) | |
84 | { | |
85 | struct rtattr *tb[TCA_DRR_MAX + 1]; | |
32a121cb | 86 | |
c86f3494 PM |
87 | if (opt == NULL) |
88 | return 0; | |
89 | ||
90 | parse_rtattr_nested(tb, TCA_DRR_MAX, opt); | |
91 | ||
92 | if (tb[TCA_DRR_QUANTUM]) | |
adbe5de9 PM |
93 | print_size(PRINT_FP, NULL, "quantum %s ", |
94 | rta_getattr_u32(tb[TCA_DRR_QUANTUM])); | |
c86f3494 PM |
95 | return 0; |
96 | } | |
97 | ||
98 | static int drr_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats) | |
99 | { | |
100 | struct tc_drr_stats *x; | |
32a121cb | 101 | |
c86f3494 PM |
102 | if (xstats == NULL) |
103 | return 0; | |
104 | if (RTA_PAYLOAD(xstats) < sizeof(*x)) | |
105 | return -1; | |
106 | x = RTA_DATA(xstats); | |
107 | ||
adbe5de9 | 108 | print_size(PRINT_FP, NULL, " deficit %s ", x->deficit); |
c86f3494 PM |
109 | return 0; |
110 | } | |
111 | ||
112 | struct qdisc_util drr_qdisc_util = { | |
113 | .id = "drr", | |
114 | .parse_qopt = drr_parse_opt, | |
115 | .print_qopt = drr_print_opt, | |
116 | .print_xstats = drr_print_xstats, | |
117 | .parse_copt = drr_parse_class_opt, | |
118 | .print_copt = drr_print_opt, | |
119 | }; |