1 /*
2 * src/nl-cls-delete.c Delete Classifier
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation version 2.1
7 * of the License.
8 *
9 * Copyright (c) 2008-2010 Thomas Graf <tgraf@suug.ch>
10 */
11
12 #include <netlink/cli/utils.h>
13 #include <netlink/cli/cls.h>
14 #include <netlink/cli/link.h>
15
16 static int quiet = 0, default_yes = 0, deleted = 0, interactive = 0;
17 static struct nl_sock *sock;
18
print_usage(void)19 static void print_usage(void)
20 {
21 printf(
22 "Usage: nl-cls-delete [OPTION]... [class]\n"
23 "\n"
24 "OPTIONS\n"
25 " --interactive Run interactively.\n"
26 " --yes Set default answer to yes.\n"
27 " -q, --quiet Do not print informal notifications.\n"
28 " -h, --help Show this help text and exit.\n"
29 " -v, --version Show versioning information and exit.\n"
30 "\n"
31 " -d, --dev=DEV Device the classifer is attached to.\n"
32 " -p, --parent=ID Identifier of parent qdisc/class.\n"
33 " -i, --id=ID Identifier\n"
34 " -k, --kind=NAME Kind of classifier (e.g. basic, u32, fw)\n"
35 " --protocol=PROTO Protocol to match (default: all)\n"
36 " --prio=PRIO Priority (default: 0)\n"
37 "\n"
38 "EXAMPLE\n"
39 " # Delete all classifiers on eth0 attached to parent q_root:\n"
40 " $ nl-cls-delete --dev eth0 --parent q_root:\n"
41 "\n"
42 );
43
44 exit(0);
45 }
46
delete_cb(struct nl_object * obj,void * arg)47 static void delete_cb(struct nl_object *obj, void *arg)
48 {
49 struct rtnl_cls *cls = nl_object_priv(obj);
50 struct nl_dump_params params = {
51 .dp_type = NL_DUMP_LINE,
52 .dp_fd = stdout,
53 };
54 int err;
55
56 if (interactive && !nl_cli_confirm(obj, ¶ms, default_yes))
57 return;
58
59 if ((err = rtnl_cls_delete(sock, cls, 0)) < 0)
60 nl_cli_fatal(err, "Unable to delete classifier: %s\n",
61 nl_geterror(err));
62
63 if (!quiet) {
64 printf("Deleted ");
65 nl_object_dump(obj, ¶ms);
66 }
67
68 deleted++;
69 }
70
__delete_link(int ifindex,struct rtnl_cls * filter)71 static void __delete_link(int ifindex, struct rtnl_cls *filter)
72 {
73 struct nl_cache *cache;
74 uint32_t parent = rtnl_tc_get_parent((struct rtnl_tc *) filter);
75
76 cache = nl_cli_cls_alloc_cache(sock, ifindex, parent);
77 nl_cache_foreach_filter(cache, OBJ_CAST(filter), delete_cb, NULL);
78 nl_cache_free(cache);
79 }
80
delete_link(struct nl_object * obj,void * arg)81 static void delete_link(struct nl_object *obj, void *arg)
82 {
83 struct rtnl_link *link = nl_object_priv(obj);
84
85 __delete_link(rtnl_link_get_ifindex(link), arg);
86 }
87
main(int argc,char * argv[])88 int main(int argc, char *argv[])
89 {
90 struct rtnl_cls *cls;
91 struct rtnl_tc *tc;
92 struct nl_cache *link_cache;
93 int ifindex;
94
95 sock = nl_cli_alloc_socket();
96 nl_cli_connect(sock, NETLINK_ROUTE);
97 link_cache = nl_cli_link_alloc_cache(sock);
98 cls = nl_cli_cls_alloc();
99 tc = (struct rtnl_tc *) cls;
100
101 for (;;) {
102 int c, optidx = 0;
103 enum {
104 ARG_YES = 257,
105 ARG_INTERACTIVE = 258,
106 ARG_PROTO,
107 ARG_PRIO,
108 };
109 static struct option long_opts[] = {
110 { "interactive", 0, 0, ARG_INTERACTIVE },
111 { "yes", 0, 0, ARG_YES },
112 { "quiet", 0, 0, 'q' },
113 { "help", 0, 0, 'h' },
114 { "version", 0, 0, 'v' },
115 { "dev", 1, 0, 'd' },
116 { "parent", 1, 0, 'p' },
117 { "id", 1, 0, 'i' },
118 { "kind", 1, 0, 'k' },
119 { "proto", 1, 0, ARG_PROTO },
120 { "prio", 1, 0, ARG_PRIO },
121 { 0, 0, 0, 0 }
122 };
123
124 c = getopt_long(argc, argv, "qhvd:p:i:k:", long_opts, &optidx);
125 if (c == -1)
126 break;
127
128 switch (c) {
129 case '?': nl_cli_fatal(EINVAL, "Invalid options");
130 case ARG_INTERACTIVE: interactive = 1; break;
131 case ARG_YES: default_yes = 1; break;
132 case 'q': quiet = 1; break;
133 case 'h': print_usage(); break;
134 case 'v': nl_cli_print_version(); break;
135 case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;
136 case 'p': nl_cli_tc_parse_parent(tc, optarg); break;
137 case 'i': nl_cli_tc_parse_handle(tc, optarg, 0); break;
138 case 'k': nl_cli_tc_parse_kind(tc, optarg); break;
139 case ARG_PROTO: nl_cli_cls_parse_proto(cls, optarg); break;
140 case ARG_PRIO:
141 rtnl_cls_set_prio(cls, nl_cli_parse_u32(optarg));
142 break;
143 }
144 }
145
146 if ((ifindex = rtnl_tc_get_ifindex(tc)))
147 __delete_link(ifindex, cls);
148 else
149 nl_cache_foreach(link_cache, delete_link, cls);
150
151 if (!quiet)
152 printf("Deleted %d classs\n", deleted);
153
154 return 0;
155 }
156