libnl: /data/src/libnl3/src/nl-neigh-delete.c Source File

libnl 3.7.0

nl-neigh-delete.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
4 */
5
6 #include <netlink/cli/utils.h>
7 #include <netlink/cli/neigh.h>
8 #include <netlink/cli/link.h>
9
10 #include <linux/netlink.h>
11
12 static int quiet = 0, default_yes = 0, deleted = 0, interactive = 0;
13 static struct nl_sock *sock;
14
15 static void print_usage(void)
16 {
17 printf(
18 "Usage: nl-neigh-delete [OPTION]... [NEIGHBOUR]\n"
19 "\n"
20 "Options\n"
21 " -i, --interactive Run interactively\n"
22 " --yes Set default answer to yes\n"
23 " -q, --quiet Do not print informal notifications\n"
24 " -h, --help Show this help\n"
25 " -v, --version Show versioning information\n"
26 "\n"
27 "Neighbour Options\n"
28 " -a, --addr=ADDR Destination address of neighbour\n"
29 " -l, --lladdr=ADDR Link layer address of neighbour\n"
30 " -d, --dev=DEV Device the neighbour is connected to\n"
31 " --family=FAMILY Destination address family\n"
32 " --state=STATE Neighbour state, (default = permanent)\n"
33 );
34
35 exit(0);
36 }
37
38 static void delete_cb(struct nl_object *obj, void *arg)
39 {
40 struct rtnl_neigh *neigh = nl_object_priv(obj);
41 struct nl_dump_params params = {
42 .dp_type = NL_DUMP_LINE,
43 .dp_fd = stdout,
44 };
45 int err;
46
47 if (interactive && !nl_cli_confirm(obj, &params, default_yes))
48 return;
49
50 if ((err = rtnl_neigh_delete(sock, neigh, 0)) < 0)
51 nl_cli_fatal(err, "Unable to delete neighbour: %s\n",
52 nl_geterror(err));
53
54 if (!quiet) {
55 printf("Deleted ");
56 nl_object_dump(obj, &params);
57 }
58
59 deleted++;
60 }
61
62 int main(int argc, char *argv[])
63 {
64 struct rtnl_neigh *neigh;
65 struct nl_cache *link_cache, *neigh_cache;
66
67 sock = nl_cli_alloc_socket();
68 nl_cli_connect(sock, NETLINK_ROUTE);
69 link_cache = nl_cli_link_alloc_cache(sock);
70 neigh_cache = nl_cli_neigh_alloc_cache(sock);
71 neigh = nl_cli_neigh_alloc();
72
73 for (;;) {
74 int c, optidx = 0;
75 enum {
76 ARG_FAMILY = 257,
77 ARG_STATE = 258,
78 ARG_YES,
79 };
80 static struct option long_opts[] = {
81 { "interactive", 0, 0, 'i' },
82 { "yes", 0, 0, ARG_YES },
83 { "quiet", 0, 0, 'q' },
84 { "help", 0, 0, 'h' },
85 { "version", 0, 0, 'v' },
86 { "addr", 1, 0, 'a' },
87 { "lladdr", 1, 0, 'l' },
88 { "dev", 1, 0, 'd' },
89 { "family", 1, 0, ARG_FAMILY },
90 { "state", 1, 0, ARG_STATE },
91 { 0, 0, 0, 0 }
92 };
93
94 c = getopt_long(argc, argv, "qhva:l:d:", long_opts, &optidx);
95 if (c == -1)
96 break;
97
98 switch (c) {
99 case 'i': interactive = 1; break;
100 case ARG_YES: default_yes = 1; break;
101 case 'q': quiet = 1; break;
102 case 'h': print_usage(); break;
103 case 'v': nl_cli_print_version(); break;
104 case 'a': nl_cli_neigh_parse_dst(neigh, optarg); break;
105 case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
106 case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
107 case ARG_FAMILY: nl_cli_neigh_parse_family(neigh, optarg); break;
108 case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
109 }
110 }
111
112 nl_cache_foreach_filter(neigh_cache, OBJ_CAST(neigh), delete_cb, NULL);
113
114 if (!quiet)
115 printf("Deleted %d neighbours\n", deleted);
116
117 return 0;
118 }
nl_cache_foreach_filter
void nl_cache_foreach_filter(struct nl_cache *cache, struct nl_object *filter, void(*cb)(struct nl_object *, void *), void *arg)
Call a callback on each element of the cache (filtered).
Definition: cache.c:1294
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:71
rtnl_neigh_delete
int rtnl_neigh_delete(struct nl_sock *sk, struct rtnl_neigh *neigh, int flags)
Delete a neighbour.
Definition: neigh.c:831
nl_object_dump
void nl_object_dump(struct nl_object *obj, struct nl_dump_params *params)
Dump this object according to the specified parameters.
Definition: object.c:287
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
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