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aba5acdf SH |
1 | /* |
2 | * q_sfq.c SFQ. | |
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: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | * | |
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: ... sfq [ limit NUMBER ] [ perturb SECS ] [ quantum BYTES ]\n"); | |
f3f28c21 | 29 | fprintf(stderr, " [ divisor NUMBER ]\n"); |
aba5acdf SH |
30 | } |
31 | ||
aba5acdf SH |
32 | static int sfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) |
33 | { | |
34 | int ok=0; | |
35 | struct tc_sfq_qopt opt; | |
36 | ||
37 | memset(&opt, 0, sizeof(opt)); | |
38 | ||
39 | while (argc > 0) { | |
40 | if (strcmp(*argv, "quantum") == 0) { | |
41 | NEXT_ARG(); | |
42 | if (get_size(&opt.quantum, *argv)) { | |
43 | fprintf(stderr, "Illegal \"limit\"\n"); | |
44 | return -1; | |
45 | } | |
46 | ok++; | |
47 | } else if (strcmp(*argv, "perturb") == 0) { | |
48 | NEXT_ARG(); | |
49 | if (get_integer(&opt.perturb_period, *argv, 0)) { | |
50 | fprintf(stderr, "Illegal \"perturb\"\n"); | |
51 | return -1; | |
52 | } | |
53 | ok++; | |
54 | } else if (strcmp(*argv, "limit") == 0) { | |
55 | NEXT_ARG(); | |
56 | if (get_u32(&opt.limit, *argv, 0)) { | |
57 | fprintf(stderr, "Illegal \"limit\"\n"); | |
58 | return -1; | |
59 | } | |
60 | if (opt.limit < 2) { | |
61 | fprintf(stderr, "Illegal \"limit\", must be > 1\n"); | |
62 | return -1; | |
63 | } | |
64 | ok++; | |
f3f28c21 ED |
65 | } else if (strcmp(*argv, "divisor") == 0) { |
66 | NEXT_ARG(); | |
67 | if (get_u32(&opt.divisor, *argv, 0)) { | |
68 | fprintf(stderr, "Illegal \"divisor\"\n"); | |
69 | return -1; | |
70 | } | |
71 | ok++; | |
aba5acdf SH |
72 | } else if (strcmp(*argv, "help") == 0) { |
73 | explain(); | |
74 | return -1; | |
75 | } else { | |
76 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
77 | explain(); | |
78 | return -1; | |
79 | } | |
80 | argc--; argv++; | |
81 | } | |
82 | ||
83 | if (ok) | |
84 | addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)); | |
85 | return 0; | |
86 | } | |
87 | ||
88 | static int sfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) | |
89 | { | |
90 | struct tc_sfq_qopt *qopt; | |
91 | SPRINT_BUF(b1); | |
92 | ||
93 | if (opt == NULL) | |
94 | return 0; | |
95 | ||
96 | if (RTA_PAYLOAD(opt) < sizeof(*qopt)) | |
97 | return -1; | |
98 | qopt = RTA_DATA(opt); | |
99 | fprintf(f, "limit %up ", qopt->limit); | |
100 | fprintf(f, "quantum %s ", sprint_size(qopt->quantum, b1)); | |
101 | if (show_details) { | |
102 | fprintf(f, "flows %u/%u ", qopt->flows, qopt->divisor); | |
103 | } | |
f3f28c21 | 104 | fprintf(f, "divisor %u ", qopt->divisor); |
aba5acdf SH |
105 | if (qopt->perturb_period) |
106 | fprintf(f, "perturb %dsec ", qopt->perturb_period); | |
107 | return 0; | |
108 | } | |
109 | ||
5626a24a PM |
110 | static int sfq_print_xstats(struct qdisc_util *qu, FILE *f, |
111 | struct rtattr *xstats) | |
112 | { | |
113 | struct tc_sfq_xstats *st; | |
114 | ||
115 | if (xstats == NULL) | |
116 | return 0; | |
117 | if (RTA_PAYLOAD(xstats) < sizeof(*st)) | |
118 | return -1; | |
119 | st = RTA_DATA(xstats); | |
120 | ||
121 | fprintf(f, " allot %d ", st->allot); | |
122 | fprintf(f, "\n"); | |
123 | return 0; | |
124 | } | |
125 | ||
95812b56 | 126 | struct qdisc_util sfq_qdisc_util = { |
f2f99e2e SH |
127 | .id = "sfq", |
128 | .parse_qopt = sfq_parse_opt, | |
129 | .print_qopt = sfq_print_opt, | |
5626a24a | 130 | .print_xstats = sfq_print_xstats, |
aba5acdf | 131 | }; |