libnl: /data/src/libnl3/src/nl-link-list.c Source File

libnl 3.10.0

nl-link-list.c
1/* SPDX-License-Identifier: LGPL-2.1-only */
2/*
3 * Copyright (c) 2003-2010 Thomas Graf <tgraf@suug.ch>
4 */
5
6#include "nl-default.h"
7
8#include <linux/netlink.h>
9
10#include <netlink/cli/utils.h>
11#include <netlink/cli/link.h>
12
13static void print_usage(void)
14{
15 printf(
16"Usage: nl-link-list [OPTIONS]... \n"
17"\n"
18"OPTIONS\n"
19" --details Show detailed information of each link\n"
20" --stats Show statistics, implies --details\n"
21" -h, --help Show this help text.\n"
22" -v, --version Show versioning information.\n"
23"\n"
24" -n, --name=NAME Name of link\n"
25" -i, --index Interface index (unique identifier)\n"
26" --family=NAME Link address family\n"
27" --mtu=NUM MTU value\n"
28" --txqlen=NUM TX queue length\n"
29" --weight=NUM Weight\n"
30 );
31 exit(0);
32}
33
34int main(int argc, char *argv[])
35{
36 struct nl_sock *sock;
37 struct nl_cache *link_cache;
38 struct rtnl_link *link;
39 struct nl_dump_params params = {
40 .dp_type = NL_DUMP_LINE,
41 .dp_fd = stdout,
42 };
43
44 sock = nl_cli_alloc_socket();
45 nl_cli_connect(sock, NETLINK_ROUTE);
46 link = nl_cli_link_alloc();
47
48 for (;;) {
49 int c, optidx = 0;
50 enum {
51 ARG_FAMILY = 257,
52 ARG_MTU = 258,
53 ARG_TXQLEN,
54 ARG_WEIGHT,
55 ARG_DETAILS,
56 ARG_STATS,
57 };
58 static struct option long_opts[] = {
59 { "details", 0, 0, ARG_DETAILS },
60 { "stats", 0, 0, ARG_STATS },
61 { "help", 0, 0, 'h' },
62 { "version", 0, 0, 'v' },
63 { "name", 1, 0, 'n' },
64 { "index", 1, 0, 'i' },
65 { "family", 1, 0, ARG_FAMILY },
66 { "mtu", 1, 0, ARG_MTU },
67 { "txqlen", 1, 0, ARG_TXQLEN },
68 { "weight", 1, 0, ARG_WEIGHT },
69 { 0, 0, 0, 0 }
70 };
71
72 c = getopt_long(argc, argv, "hvn:i:", long_opts, &optidx);
73 if (c == -1)
74 break;
75
76 switch (c) {
77 case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;
78 case ARG_STATS: params.dp_type = NL_DUMP_STATS; break;
79 case 'h': print_usage(); break;
80 case 'v': nl_cli_print_version(); break;
81 case 'n': nl_cli_link_parse_name(link, optarg); break;
82 case 'i': nl_cli_link_parse_ifindex(link, optarg); break;
83 case ARG_FAMILY: nl_cli_link_parse_family(link, optarg); break;
84 case ARG_MTU: nl_cli_link_parse_mtu(link, optarg); break;
85 case ARG_TXQLEN: nl_cli_link_parse_txqlen(link, optarg); break;
86 case ARG_WEIGHT: nl_cli_link_parse_weight(link, optarg); break;
87 }
88 }
89
90 link_cache = nl_cli_link_alloc_cache_family(sock,
91 rtnl_link_get_family(link));
92
93 nl_cache_dump_filter(link_cache, &params, OBJ_CAST(link));
94
95 return 0;
96}
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_get_family
int rtnl_link_get_family(struct rtnl_link *link)
Return address family of link object.
Definition link.c:2133
NL_DUMP_STATS
@ NL_DUMP_STATS
Dump all attributes including statistics.
Definition types.h:22
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition types.h:20
NL_DUMP_DETAILS
@ NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition types.h:21
nl_dump_params
Dumping parameters.
Definition types.h:32
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition types.h:36
rtnl_link
Link object.
Definition nl-route.h:29