libnl: /data/src/libnl3/src/idiag-socket-details.c Source File

libnl 3.7.0

idiag-socket-details.c
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (c) 2013 Sassano Systems LLC <joe@sassanosystems.com>
4 */
5
6 #include <netlink/cli/utils.h>
7 #include <netlink/idiag/idiagnl.h>
8 #include <netlink/idiag/msg.h>
9 #include <linux/netlink.h>
10
11 static void print_usage(void)
12 {
13 printf(
14 "Usage: idiag-socket-details [OPTION]\n"
15 "\n"
16 "Options\n"
17 " --summary Show socket detail summary.\n"
18 " --details Show socket details on multiple lines.\n"
19 " --stats Show full socket statistics.\n"
20 " -h, --help Show this help.\n"
21 " -v, --version Show versioning information.\n"
22 );
23 exit(0);
24 }
25
26 int main(int argc, char *argv[])
27 {
28 struct nl_sock *sock;
29 struct nl_cache *idiag_cache;
30 struct nl_dump_params params = {
31 .dp_type = NL_DUMP_LINE,
32 .dp_nl_cb = NULL,
33 .dp_fd = stdout,
34 };
35 int err = 0;
36
37 sock = nl_cli_alloc_socket();
38 nl_cli_connect(sock, NETLINK_INET_DIAG);
39 for (;;) {
40 int c, optidx = 0;
41 enum {
42 ARG_SUMMARY = 257,
43 ARG_DETAILS = 258,
44 ARG_STATS = 259,
45 ARG_FAMILY,
46 };
47 static struct option long_opts[] = {
48 { "details", 0, 0, ARG_DETAILS },
49 { "summary", 0, 0, ARG_SUMMARY },
50 { "stats", 0, 0, ARG_STATS},
51 { "help", 0, 0, 'h' },
52 { "version", 0, 0, 'v' },
53 { 0, 0, 0, 0 }
54 };
55
56 c = getopt_long(argc, argv, "hv", long_opts, &optidx);
57 if (c == -1)
58 break;
59
60 switch (c) {
61 case '?': exit(NLE_INVAL);
62 case ARG_SUMMARY: params.dp_type = NL_DUMP_LINE; break;
63 case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;
64 case ARG_STATS: params.dp_type = NL_DUMP_STATS; break;
65 case 'h': print_usage(); break;
66 case 'v': nl_cli_print_version(); break;
67 }
68 }
69
70 if ((err = idiagnl_msg_alloc_cache(sock, AF_INET, IDIAGNL_SS_ALL,
71 &idiag_cache))) {
72 nl_cli_fatal(err, "Unable to allocate idiag msg cache: %s",
73 nl_geterror(err));
74 }
75
76 nl_cache_mngt_provide(idiag_cache);
77
78 nl_cache_dump_filter(idiag_cache, &params, NULL);
79
80 nl_cache_mngt_unprovide(idiag_cache);
81 nl_cache_free(idiag_cache);
82 nl_socket_free(sock);
83
84 return 0;
85 }
nl_cache_mngt_unprovide
void nl_cache_mngt_unprovide(struct nl_cache *cache)
Unprovide a cache for global use.
Definition: cache_mngt.c:359
nl_cache_mngt_provide
void nl_cache_mngt_provide(struct nl_cache *cache)
Provide a cache for global use.
Definition: cache_mngt.c:326
nl_cache_free
void nl_cache_free(struct nl_cache *cache)
Free a cache.
Definition: cache.c:403
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:1211
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:71
IDIAGNL_SS_ALL
#define IDIAGNL_SS_ALL
Macro to represent all socket states.
Definition: idiagnl.h:111
idiagnl_msg_alloc_cache
int idiagnl_msg_alloc_cache(struct nl_sock *sk, int family, int states, struct nl_cache **result)
Build an inetdiag cache to hold socket state information.
Definition: idiag_msg_obj.c:139
nl_socket_free
void nl_socket_free(struct nl_sock *sk)
Free a netlink socket.
Definition: socket.c:238
NL_DUMP_STATS
@ NL_DUMP_STATS
Dump all attributes including statistics.
Definition: types.h:18
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
NL_DUMP_DETAILS
@ NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition: types.h:17
nl_dump_params
Dumping parameters.
Definition: types.h:28
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:32