idiag-socket-details.c

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2013 Sassano Systems LLC <joe@sassanosystems.com>
 */
 
#include <netlink/cli/utils.h>
#include <netlink/idiag/idiagnl.h>
#include <netlink/idiag/msg.h>
#include <linux/netlink.h>
 
static void print_usage(void)
{
        printf(
"Usage: idiag-socket-details [OPTION]\n"
"\n"
"Options\n"
"     --summary             Show socket detail summary.\n"
"     --details             Show socket details on multiple lines.\n"
"     --stats               Show full socket statistics.\n"
" -h, --help                Show this help.\n"
" -v, --version             Show versioning information.\n"
        );
        exit(0);
}
 
int main(int argc, char *argv[])
{
        struct nl_sock *sock;
        struct nl_cache *idiag_cache;
        struct nl_dump_params params = {
                .dp_type = NL_DUMP_LINE,
                .dp_nl_cb = NULL,
                .dp_fd = stdout,
        };
        int err = 0;
 
        sock = nl_cli_alloc_socket();
        nl_cli_connect(sock, NETLINK_INET_DIAG);
        for (;;) {
                int c, optidx = 0;
                enum {
                        ARG_SUMMARY = 257,
                        ARG_DETAILS = 258,
                        ARG_STATS = 259,
                        ARG_FAMILY,
                };
                static struct option long_opts[] = {
                        { "details", 0, 0, ARG_DETAILS },
                        { "summary", 0, 0, ARG_SUMMARY },
                        { "stats", 0, 0, ARG_STATS},
                        { "help", 0, 0, 'h' },
                        { "version", 0, 0, 'v' },
                        { 0, 0, 0, 0 }
                };
 
                c = getopt_long(argc, argv, "hv", long_opts, &optidx);
                if (c == -1)
                        break;
 
                switch (c) {
                case '?': exit(NLE_INVAL);
                case ARG_SUMMARY: params.dp_type = NL_DUMP_LINE; break;
                case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;
                case ARG_STATS:   params.dp_type = NL_DUMP_STATS; break;
                case 'h': print_usage(); break;
                case 'v': nl_cli_print_version(); break;
                }
        }
 
        if ((err = idiagnl_msg_alloc_cache(sock, AF_INET, IDIAGNL_SS_ALL,
                                        &idiag_cache))) {
                nl_cli_fatal(err, "Unable to allocate idiag msg cache: %s",
                                nl_geterror(err));
        }
 
        nl_cache_mngt_provide(idiag_cache);
 
        nl_cache_dump_filter(idiag_cache, &params, NULL);
 
        nl_cache_mngt_unprovide(idiag_cache);
        nl_cache_free(idiag_cache);
        nl_socket_free(sock);
 
        return 0;
}