libnl 3.5.0

nl-link-list.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * src/nl-link-dump.c Dump link attributes
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation version 2.1
8 * of the License.
9 *
10 * Copyright (c) 2003-2010 Thomas Graf <tgraf@suug.ch>
11 */
12
13 #include <netlink/cli/utils.h>
14 #include <netlink/cli/link.h>
15
16 #include <linux/netlink.h>
17
18 static void print_usage(void)
19 {
20 printf(
21 "Usage: nl-link-list [OPTIONS]... \n"
22 "\n"
23 "OPTIONS\n"
24 " --details Show detailed information of each link\n"
25 " --stats Show statistics, implies --details\n"
26 " -h, --help Show this help text.\n"
27 " -v, --version Show versioning information.\n"
28 "\n"
29 " -n, --name=NAME Name of link\n"
30 " -i, --index Interface index (unique identifier)\n"
31 " --family=NAME Link address family\n"
32 " --mtu=NUM MTU value\n"
33 " --txqlen=NUM TX queue length\n"
34 " --weight=NUM Weight\n"
35 );
36 exit(0);
37 }
38
39 int main(int argc, char *argv[])
40 {
41 struct nl_sock *sock;
42 struct nl_cache *link_cache;
43 struct rtnl_link *link;
44 struct nl_dump_params params = {
45 .dp_type = NL_DUMP_LINE,
46 .dp_fd = stdout,
47 };
48
49 sock = nl_cli_alloc_socket();
50 nl_cli_connect(sock, NETLINK_ROUTE);
51 link = nl_cli_link_alloc();
52
53 for (;;) {
54 int c, optidx = 0;
55 enum {
56 ARG_FAMILY = 257,
57 ARG_MTU = 258,
58 ARG_TXQLEN,
59 ARG_WEIGHT,
60 ARG_DETAILS,
61 ARG_STATS,
62 };
63 static struct option long_opts[] = {
64 { "details", 0, 0, ARG_DETAILS },
65 { "stats", 0, 0, ARG_STATS },
66 { "help", 0, 0, 'h' },
67 { "version", 0, 0, 'v' },
68 { "name", 1, 0, 'n' },
69 { "index", 1, 0, 'i' },
70 { "family", 1, 0, ARG_FAMILY },
71 { "mtu", 1, 0, ARG_MTU },
72 { "txqlen", 1, 0, ARG_TXQLEN },
73 { "weight", 1, 0, ARG_WEIGHT },
74 { 0, 0, 0, 0 }
75 };
76
77 c = getopt_long(argc, argv, "hvn:i:", long_opts, &optidx);
78 if (c == -1)
79 break;
80
81 switch (c) {
82 case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;
83 case ARG_STATS: params.dp_type = NL_DUMP_STATS; break;
84 case 'h': print_usage(); break;
85 case 'v': nl_cli_print_version(); break;
86 case 'n': nl_cli_link_parse_name(link, optarg); break;
87 case 'i': nl_cli_link_parse_ifindex(link, optarg); break;
88 case ARG_FAMILY: nl_cli_link_parse_family(link, optarg); break;
89 case ARG_MTU: nl_cli_link_parse_mtu(link, optarg); break;
90 case ARG_TXQLEN: nl_cli_link_parse_txqlen(link, optarg); break;
91 case ARG_WEIGHT: nl_cli_link_parse_weight(link, optarg); break;
92 }
93 }
94
95 link_cache = nl_cli_link_alloc_cache_family(sock,
96 rtnl_link_get_family(link));
97
98 nl_cache_dump_filter(link_cache, &params, OBJ_CAST(link));
99
100 return 0;
101 }
NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:22
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
nl_cache_dump_filter
void nl_cache_dump_filter(struct nl_cache *cache, struct nl_dump_params *params, struct nl_object *filter)
Dump all elements of a cache (filtered).
Definition: cache.c:1217
rtnl_link
Link object.
NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition: types.h:23
rtnl_link_get_family
int rtnl_link_get_family(struct rtnl_link *link)
Return address family of link object.
Definition: link.c:2143
nl_dump_params
Dumping parameters.
Definition: types.h:33
NL_DUMP_STATS
Dump all attributes including statistics.
Definition: types.h:24