libnl 3.5.0

nl-route-list.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * src/nl-route-list.c List route attributes
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation version 2.1
8 * of the License.
9 *
10 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
11 */
12
13 #include <netlink/cli/utils.h>
14 #include <netlink/cli/route.h>
15 #include <netlink/cli/link.h>
16
17 #include <linux/netlink.h>
18
19 static void print_usage(void)
20 {
21 printf(
22 "Usage: nl-route-list [OPTION]... [ROUTE]\n"
23 "\n"
24 "Options\n"
25 " -c, --cache List the contents of the route cache\n"
26 " -f, --format=TYPE Output format { brief | details | stats }\n"
27 " -h, --help Show this help\n"
28 " -v, --version Show versioning information\n"
29 "\n"
30 "Route Options\n"
31 " -d, --dst=ADDR destination prefix, e.g. 10.10.0.0/16\n"
32 " -n, --nexthop=NH nexthop configuration:\n"
33 " dev=DEV route via device\n"
34 " weight=WEIGHT weight of nexthop\n"
35 " flags=FLAGS\n"
36 " via=GATEWAY route via other node\n"
37 " realms=REALMS\n"
38 " e.g. dev=eth0,via=192.168.1.12\n"
39 " -t, --table=TABLE Routing table\n"
40 " --family=FAMILY Address family\n"
41 " --src=ADDR Source prefix\n"
42 " --iif=DEV Incomming interface\n"
43 " --pref-src=ADDR Preferred source address\n"
44 " --metrics=OPTS Metrics configurations\n"
45 " --priority=NUM Priotity\n"
46 " --scope=SCOPE Scope\n"
47 " --protocol=PROTO Protocol\n"
48 " --type=TYPE { unicast | local | broadcast | multicast }\n"
49 );
50 exit(0);
51 }
52
53 int main(int argc, char *argv[])
54 {
55 struct nl_sock *sock;
56 struct nl_cache *link_cache, *route_cache;
57 struct rtnl_route *route;
58 struct nl_dump_params params = {
59 .dp_fd = stdout,
60 .dp_type = NL_DUMP_LINE,
61 };
62 int print_cache = 0;
63
64 sock = nl_cli_alloc_socket();
65 nl_cli_connect(sock, NETLINK_ROUTE);
66 link_cache = nl_cli_link_alloc_cache(sock);
67 route = nl_cli_route_alloc();
68
69 for (;;) {
70 int c, optidx = 0;
71 enum {
72 ARG_FAMILY = 257,
73 ARG_SRC = 258,
74 ARG_IIF,
75 ARG_PREF_SRC,
76 ARG_METRICS,
77 ARG_PRIORITY,
78 ARG_SCOPE,
79 ARG_PROTOCOL,
80 ARG_TYPE,
81 };
82 static struct option long_opts[] = {
83 { "cache", 0, 0, 'c' },
84 { "format", 1, 0, 'f' },
85 { "help", 0, 0, 'h' },
86 { "version", 0, 0, 'v' },
87 { "dst", 1, 0, 'd' },
88 { "nexthop", 1, 0, 'n' },
89 { "table", 1, 0, 't' },
90 { "family", 1, 0, ARG_FAMILY },
91 { "src", 1, 0, ARG_SRC },
92 { "iif", 1, 0, ARG_IIF },
93 { "pref-src", 1, 0, ARG_PREF_SRC },
94 { "metrics", 1, 0, ARG_METRICS },
95 { "priority", 1, 0, ARG_PRIORITY },
96 { "scope", 1, 0, ARG_SCOPE },
97 { "protocol", 1, 0, ARG_PROTOCOL },
98 { "type", 1, 0, ARG_TYPE },
99 { 0, 0, 0, 0 }
100 };
101
102 c = getopt_long(argc, argv, "cf:hvd:n:t:", long_opts, &optidx);
103 if (c == -1)
104 break;
105
106 switch (c) {
107 case 'c': print_cache = 1; break;
108 case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
109 case 'h': print_usage(); break;
110 case 'v': nl_cli_print_version(); break;
111 case 'd': nl_cli_route_parse_dst(route, optarg); break;
112 case 'n': nl_cli_route_parse_nexthop(route, optarg, link_cache); break;
113 case 't': nl_cli_route_parse_table(route, optarg); break;
114 case ARG_FAMILY: nl_cli_route_parse_family(route, optarg); break;
115 case ARG_SRC: nl_cli_route_parse_src(route, optarg); break;
116 case ARG_IIF: nl_cli_route_parse_iif(route, optarg, link_cache); break;
117 case ARG_PREF_SRC: nl_cli_route_parse_pref_src(route, optarg); break;
118 case ARG_METRICS: nl_cli_route_parse_metric(route, optarg); break;
119 case ARG_PRIORITY: nl_cli_route_parse_prio(route, optarg); break;
120 case ARG_SCOPE: nl_cli_route_parse_scope(route, optarg); break;
121 case ARG_PROTOCOL: nl_cli_route_parse_protocol(route, optarg); break;
122 case ARG_TYPE: nl_cli_route_parse_type(route, optarg); break;
123 }
124 }
125
126 route_cache = nl_cli_route_alloc_cache(sock,
127 print_cache ? ROUTE_CACHE_CONTENT : 0);
128
129 nl_cache_dump_filter(route_cache, &params, OBJ_CAST(route));
130
131 return 0;
132 }
NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:22
nl_dump_params::dp_fd
FILE * dp_fd
File descriptor the dumping output should go to.
Definition: types.h:83
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
ROUTE_CACHE_CONTENT
#define ROUTE_CACHE_CONTENT
When passed to rtnl_route_alloc_cache() the cache will correspond to the contents of the routing cach...
Definition: route.h:33
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:1217
nl_dump_params
Dumping parameters.
Definition: types.h:33