nl-neigh-delete.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 int quiet = 0, default_yes = 0, deleted = 0, interactive = 0;
static struct nl_sock *sock;
 
static void print_usage(void)
{
        printf(
        "Usage: nl-neigh-delete [OPTION]... [NEIGHBOUR]\n"
        "\n"
        "Options\n"
        " -i, --interactive     Run interactively\n"
        "     --yes             Set default answer to yes\n"
        " -q, --quiet           Do not print informal notifications\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);
}
 
static void delete_cb(struct nl_object *obj, void *arg)
{
        struct rtnl_neigh *neigh = nl_object_priv(obj);
        struct nl_dump_params params = {
                .dp_type = NL_DUMP_LINE,
                .dp_fd = stdout,
        };
        int err;
 
        if (interactive && !nl_cli_confirm(obj, &params, default_yes))
                return;
 
        if ((err = rtnl_neigh_delete(sock, neigh, 0)) < 0)
                nl_cli_fatal(err, "Unable to delete neighbour: %s\n",
                             nl_geterror(err));
 
        if (!quiet) {
                printf("Deleted ");
                nl_object_dump(obj, &params);
        }
 
        deleted++;
}
 
int main(int argc, char *argv[])
{
        struct rtnl_neigh *neigh;
        struct nl_cache *link_cache, *neigh_cache;
 
        sock = nl_cli_alloc_socket();
        nl_cli_connect(sock, NETLINK_ROUTE);
        link_cache = nl_cli_link_alloc_cache(sock);
        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,
                        ARG_YES,
                };
                static struct option long_opts[] = {
                        { "interactive", 0, 0, 'i' },
                        { "yes", 0, 0, ARG_YES },
                        { "quiet", 0, 0, 'q' },
                        { "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, "qhva:l:d:", long_opts, &optidx);
                if (c == -1)
                        break;
 
                switch (c) {
                case 'i': interactive = 1; break;
                case ARG_YES: default_yes = 1; break;
                case 'q': quiet = 1; 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_foreach_filter(neigh_cache, OBJ_CAST(neigh), delete_cb, NULL);
 
        if (!quiet)
                printf("Deleted %d neighbours\n", deleted);
 
        return 0;
}