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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"); | |
29 | } | |
30 | ||
31 | #define usage() return(-1) | |
32 | ||
33 | static int sfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) | |
34 | { | |
35 | int ok=0; | |
36 | struct tc_sfq_qopt opt; | |
37 | ||
38 | memset(&opt, 0, sizeof(opt)); | |
39 | ||
40 | while (argc > 0) { | |
41 | if (strcmp(*argv, "quantum") == 0) { | |
42 | NEXT_ARG(); | |
43 | if (get_size(&opt.quantum, *argv)) { | |
44 | fprintf(stderr, "Illegal \"limit\"\n"); | |
45 | return -1; | |
46 | } | |
47 | ok++; | |
48 | } else if (strcmp(*argv, "perturb") == 0) { | |
49 | NEXT_ARG(); | |
50 | if (get_integer(&opt.perturb_period, *argv, 0)) { | |
51 | fprintf(stderr, "Illegal \"perturb\"\n"); | |
52 | return -1; | |
53 | } | |
54 | ok++; | |
55 | } else if (strcmp(*argv, "limit") == 0) { | |
56 | NEXT_ARG(); | |
57 | if (get_u32(&opt.limit, *argv, 0)) { | |
58 | fprintf(stderr, "Illegal \"limit\"\n"); | |
59 | return -1; | |
60 | } | |
61 | if (opt.limit < 2) { | |
62 | fprintf(stderr, "Illegal \"limit\", must be > 1\n"); | |
63 | return -1; | |
64 | } | |
65 | ok++; | |
66 | } else if (strcmp(*argv, "help") == 0) { | |
67 | explain(); | |
68 | return -1; | |
69 | } else { | |
70 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
71 | explain(); | |
72 | return -1; | |
73 | } | |
74 | argc--; argv++; | |
75 | } | |
76 | ||
77 | if (ok) | |
78 | addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)); | |
79 | return 0; | |
80 | } | |
81 | ||
82 | static int sfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) | |
83 | { | |
84 | struct tc_sfq_qopt *qopt; | |
85 | SPRINT_BUF(b1); | |
86 | ||
87 | if (opt == NULL) | |
88 | return 0; | |
89 | ||
90 | if (RTA_PAYLOAD(opt) < sizeof(*qopt)) | |
91 | return -1; | |
92 | qopt = RTA_DATA(opt); | |
93 | fprintf(f, "limit %up ", qopt->limit); | |
94 | fprintf(f, "quantum %s ", sprint_size(qopt->quantum, b1)); | |
95 | if (show_details) { | |
96 | fprintf(f, "flows %u/%u ", qopt->flows, qopt->divisor); | |
97 | } | |
98 | if (qopt->perturb_period) | |
99 | fprintf(f, "perturb %dsec ", qopt->perturb_period); | |
100 | return 0; | |
101 | } | |
102 | ||
95812b56 | 103 | struct qdisc_util sfq_qdisc_util = { |
f2f99e2e SH |
104 | .id = "sfq", |
105 | .parse_qopt = sfq_parse_opt, | |
106 | .print_qopt = sfq_print_opt, | |
aba5acdf | 107 | }; |