1 /*
2 * lib/cli/qdisc/fq_codel.c fq_codel module for CLI lib
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation version 2.1
7 * of the License.
8 *
9 * Copyright (c) 2013 Cong Wang <xiyou.wangcong@gmail.com>
10 */
11
12 #include <netlink/cli/utils.h>
13 #include <netlink/cli/tc.h>
14 #include <netlink/route/qdisc/fq_codel.h>
15
print_usage(void)16 static void print_usage(void)
17 {
18 printf(
19 "Usage: nl-qdisc-add [...] fq_codel [OPTIONS]...\n"
20 "\n"
21 "OPTIONS\n"
22 " --help Show this help text.\n"
23 " --limit=LIMIT Maximum queue length in number of bytes.\n"
24 " --quantum=SIZE Amount of bytes to serve at once.\n"
25 " --flows=N Number of flows.\n"
26 " --interval=N The interval in usec.\n"
27 " --target=N The minimum delay in usec.\n"
28 "\n"
29 "EXAMPLE"
30 " # Attach fq_codel with a 4096 packets limit to eth1\n"
31 " nl-qdisc-add --dev=eth1 --parent=root fq_codel --limit=4096\n");
32 }
33
fq_codel_parse_argv(struct rtnl_tc * tc,int argc,char ** argv)34 static void fq_codel_parse_argv(struct rtnl_tc *tc, int argc, char **argv)
35 {
36 struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) tc;
37 int limit, flows;
38 uint32_t quantum, target, interval;
39
40 for (;;) {
41 int c, optidx = 0;
42 enum {
43 ARG_LIMIT = 257,
44 ARG_QUANTUM = 258,
45 ARG_FLOWS,
46 ARG_INTERVAL,
47 ARG_TARGET,
48 };
49 static struct option long_opts[] = {
50 { "help", 0, 0, 'h' },
51 { "limit", 1, 0, ARG_LIMIT },
52 { "quantum", 1, 0, ARG_QUANTUM },
53 { "flows", 1, 0, ARG_FLOWS},
54 { "interval", 1, 0, ARG_INTERVAL},
55 { "target", 1, 0, ARG_TARGET},
56 { 0, 0, 0, 0 }
57 };
58
59 c = getopt_long(argc, argv, "h", long_opts, &optidx);
60 if (c == -1)
61 break;
62
63 switch (c) {
64 case 'h':
65 print_usage();
66 return;
67
68 case ARG_LIMIT:
69 limit = nl_cli_parse_u32(optarg);
70 rtnl_qdisc_fq_codel_set_limit(qdisc, limit);
71 break;
72
73 case ARG_QUANTUM:
74 quantum = nl_cli_parse_u32(optarg);
75 rtnl_qdisc_fq_codel_set_quantum(qdisc, quantum);
76 break;
77
78 case ARG_FLOWS:
79 flows = nl_cli_parse_u32(optarg);
80 rtnl_qdisc_fq_codel_set_flows(qdisc, flows);
81 break;
82
83 case ARG_INTERVAL:
84 interval = nl_cli_parse_u32(optarg);
85 rtnl_qdisc_fq_codel_set_interval(qdisc, interval);
86 break;
87
88 case ARG_TARGET:
89 target = nl_cli_parse_u32(optarg);
90 rtnl_qdisc_fq_codel_set_target(qdisc, target);
91 break;
92
93 }
94 }
95 }
96
97 static struct nl_cli_tc_module fq_codel_module =
98 {
99 .tm_name = "fq_codel",
100 .tm_type = RTNL_TC_TYPE_QDISC,
101 .tm_parse_argv = fq_codel_parse_argv,
102 };
103
fq_codel_init(void)104 static void __init fq_codel_init(void)
105 {
106 nl_cli_tc_register(&fq_codel_module);
107 }
108
fq_codel_exit(void)109 static void __exit fq_codel_exit(void)
110 {
111 nl_cli_tc_unregister(&fq_codel_module);
112 }
113