nl-neigh-list.c

/* SPDX-License-Identifier: LGPL-2.1-only */
/*
 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
 */
 
#include <netlink/cli/utils.h>
#include <netlink/cli/neigh.h>
#include <netlink/cli/link.h>
 
#include <linux/netlink.h>
 
static void print_usage(void)
{
        printf(
        "Usage: nl-neigh-list [OPTION]... [NEIGHBOUR]\n"
        "\n"
        "Options\n"
        " -f, --format=TYPE     Output format { brief | details | stats }\n"
        " -h, --help            Show this help\n"
        " -v, --version         Show versioning information\n"
        "\n"
        "Neighbour Options\n"
        " -a, --addr=ADDR       Destination address of neighbour\n"
        " -l, --lladdr=ADDR     Link layer address of neighbour\n"
        " -d, --dev=DEV         Device the neighbour is connected to\n"
        "     --family=FAMILY   Destination address family\n"
        "     --state=STATE     Neighbour state, (default = permanent)\n"
        );
        exit(0);
}
 
int main(int argc, char *argv[])
{
        struct nl_sock *sock;
        struct rtnl_neigh *neigh;
        struct nl_cache *link_cache, *neigh_cache;
        struct nl_dump_params params = {
                .dp_type = NL_DUMP_LINE,
                .dp_fd = stdout,
        };
 
        sock = nl_cli_alloc_socket();
        nl_cli_connect(sock, NETLINK_ROUTE);
        link_cache = nl_cli_link_alloc_cache_flags(sock, NL_CACHE_AF_ITER);
        neigh_cache = nl_cli_neigh_alloc_cache(sock);
        neigh = nl_cli_neigh_alloc();
 
        for (;;) {
                int c, optidx = 0;
                enum {
                        ARG_FAMILY = 257,
                        ARG_STATE = 258,
                };
                static struct option long_opts[] = {
                        { "format", 1, 0, 'f' },
                        { "help", 0, 0, 'h' },
                        { "version", 0, 0, 'v' },
                        { "addr", 1, 0, 'a' },
                        { "lladdr", 1, 0, 'l' },
                        { "dev", 1, 0, 'd' },
                        { "family", 1, 0, ARG_FAMILY },
                        { "state", 1, 0, ARG_STATE },
                        { 0, 0, 0, 0 }
                };
 
                c = getopt_long(argc, argv, "f:hva:l:d:", long_opts, &optidx);
                if (c == -1)
                        break;
 
                switch (c) {
                case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
                case 'h': print_usage(); break;
                case 'v': nl_cli_print_version(); break;
                case 'a': nl_cli_neigh_parse_dst(neigh, optarg); break;
                case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
                case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
                case ARG_FAMILY: nl_cli_neigh_parse_family(neigh, optarg); break;
                case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
                }
        }
 
        nl_cache_dump_filter(neigh_cache, &params, OBJ_CAST(neigh));
 
        rtnl_neigh_put(neigh);
        nl_cache_put(neigh_cache);
        nl_cache_put(link_cache);
        nl_socket_free(sock);
 
        return 0;
}