libnl: /data/src/libnl/lib/cli/qdisc/bfifo.c Source File

libnl 3.12.0

bfifo.c
1/* SPDX-License-Identifier: LGPL-2.1-only */
2/*
3 * Copyright (c) 2010-2011 Thomas Graf <tgraf@suug.ch>
4 */
5
6#include "nl-default.h"
7
8#include <netlink/cli/utils.h>
9#include <netlink/cli/tc.h>
10#include <netlink/route/qdisc/fifo.h>
11
12static void print_usage(void)
13{
14 printf(
15"Usage: nl-qdisc-add [...] bfifo [OPTIONS]...\n"
16"\n"
17"OPTIONS\n"
18" --help Show this help text.\n"
19" --limit=LIMIT Maximum queue length in number of bytes.\n"
20"\n"
21"EXAMPLE"
22" # Attach bfifo with a 4KB bytes limit to eth1\n"
23" nl-qdisc-add --dev=eth1 --parent=root bfifo --limit=4096\n");
24}
25
26static void bfifo_parse_argv(struct rtnl_tc *tc, int argc, char **argv)
27{
28 struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) tc;
29 int limit;
30
31 for (;;) {
32 int c, optidx = 0;
33 enum {
34 ARG_LIMIT = 257,
35 };
36 static struct option long_opts[] = {
37 { "help", 0, 0, 'h' },
38 { "limit", 1, 0, ARG_LIMIT },
39 { 0, 0, 0, 0 }
40 };
41
42 c = getopt_long(argc, argv, "h", long_opts, &optidx);
43 if (c == -1)
44 break;
45
46 switch (c) {
47 case 'h':
48 print_usage();
49 return;
50
51 case ARG_LIMIT:
52 limit = nl_size2int(optarg);
53 if (limit < 0) {
54 nl_cli_fatal(limit, "Unable to parse bfifo limit "
55 "\"%s\": Invalid format.", optarg);
56 }
57
58 rtnl_qdisc_fifo_set_limit(qdisc, limit);
59 break;
60 }
61 }
62}
63
64static struct nl_cli_tc_module bfifo_module =
65{
66 .tm_name = "bfifo",
67 .tm_type = RTNL_TC_TYPE_QDISC,
68 .tm_parse_argv = bfifo_parse_argv,
69};
70
71static void _nl_init bfifo_init(void)
72{
73 nl_cli_tc_register(&bfifo_module);
74}
75
76static void _nl_exit bfifo_exit(void)
77{
78 nl_cli_tc_unregister(&bfifo_module);
79}
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition utils.c:71
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
nl_size2int
long nl_size2int(const char *str)
Convert a character string to a size.
Definition utils.c:348
nl_cli_tc_module
Definition tc.h:27
rtnl_qdisc
Definition nl-route.h:119
rtnl_tc
Definition nl-route.h:115