libnl 3.5.0

bfifo.c
1 /*
2 * src/lib/bfifo.c bfifo 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) 2010-2011 Thomas Graf <tgraf@suug.ch>
10 */
11
12 #include <netlink/cli/utils.h>
13 #include <netlink/cli/tc.h>
14 #include <netlink/route/qdisc/fifo.h>
15
16 static void print_usage(void)
17 {
18 printf(
19 "Usage: nl-qdisc-add [...] bfifo [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 "\n"
25 "EXAMPLE"
26 " # Attach bfifo with a 4KB bytes limit to eth1\n"
27 " nl-qdisc-add --dev=eth1 --parent=root bfifo --limit=4096\n");
28 }
29
30 static void bfifo_parse_argv(struct rtnl_tc *tc, int argc, char **argv)
31 {
32 struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) tc;
33 int limit;
34
35 for (;;) {
36 int c, optidx = 0;
37 enum {
38 ARG_LIMIT = 257,
39 };
40 static struct option long_opts[] = {
41 { "help", 0, 0, 'h' },
42 { "limit", 1, 0, ARG_LIMIT },
43 { 0, 0, 0, 0 }
44 };
45
46 c = getopt_long(argc, argv, "h", long_opts, &optidx);
47 if (c == -1)
48 break;
49
50 switch (c) {
51 case 'h':
52 print_usage();
53 return;
54
55 case ARG_LIMIT:
56 limit = nl_size2int(optarg);
57 if (limit < 0) {
58 nl_cli_fatal(limit, "Unable to parse bfifo limit "
59 "\"%s\": Invalid format.", optarg);
60 }
61
62 rtnl_qdisc_fifo_set_limit(qdisc, limit);
63 break;
64 }
65 }
66 }
67
68 static struct nl_cli_tc_module bfifo_module =
69 {
70 .tm_name = "bfifo",
71 .tm_type = RTNL_TC_TYPE_QDISC,
72 .tm_parse_argv = bfifo_parse_argv,
73 };
74
75 static void __init bfifo_init(void)
76 {
77 nl_cli_tc_register(&bfifo_module);
78 }
79
80 static void __exit bfifo_exit(void)
81 {
82 nl_cli_tc_unregister(&bfifo_module);
83 }
nl_size2int
long nl_size2int(const char *str)
Convert a character string to a size.
Definition: utils.c:295
nl_cli_tc_module
Definition: tc.h:28
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:78
rtnl_qdisc_fifo_set_limit
int rtnl_qdisc_fifo_set_limit(struct rtnl_qdisc *qdisc, int limit)
Set limit of FIFO qdisc.
Definition: fifo.c:106