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