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1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * src/nl-tctree-list.c		List Traffic Control Tree
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/link.h>
15 #include <netlink/cli/qdisc.h>
16 #include <netlink/cli/class.h>
17 
18 #include <linux/netlink.h>
19 #include <linux/pkt_sched.h>
20 
21 static struct nl_sock *sock;
22 static struct nl_cache *qdisc_cache, *class_cache;
23 static struct nl_dump_params params = {
24 	.dp_type = NL_DUMP_DETAILS,
25 };
26 
27 static int ifindex;
28 static void print_qdisc(struct nl_object *, void *);
29 static void print_tc_childs(struct rtnl_tc *, void *);
30 
print_usage(void)31 static void print_usage(void)
32 {
33 	printf(
34 	"Usage: nl-tctree-list [OPTION]...\n"
35 	"\n"
36 	"Options\n"
37 	" -f, --format=TYPE	Output format { brief | details | stats }\n"
38 	" -h, --help            Show this help\n"
39 	" -v, --version		Show versioning information\n"
40 	);
41 	exit(0);
42 }
43 
print_class(struct nl_object * obj,void * arg)44 static void print_class(struct nl_object *obj, void *arg)
45 {
46 	struct rtnl_qdisc *leaf;
47 	struct rtnl_class *class = (struct rtnl_class *) obj;
48 	struct nl_cache *cls_cache;
49 	uint32_t parent = rtnl_tc_get_handle((struct rtnl_tc *) class);
50 
51 	params.dp_prefix = (int)(long) arg;
52 	nl_object_dump(obj, &params);
53 
54 	leaf = rtnl_class_leaf_qdisc(class, qdisc_cache);
55 	if (leaf)
56 		print_qdisc((struct nl_object *) leaf, (char *) arg + 2);
57 
58 	print_tc_childs(TC_CAST(class), (char *) arg + 2);
59 
60 	if (rtnl_cls_alloc_cache(sock, ifindex, parent, &cls_cache) < 0)
61 		return;
62 
63 	params.dp_prefix = (int)(long) arg + 2;
64 	nl_cache_dump(cls_cache, &params);
65 	nl_cache_free(cls_cache);
66 }
67 
print_tc_childs(struct rtnl_tc * tc,void * arg)68 static void print_tc_childs(struct rtnl_tc *tc, void *arg)
69 {
70 	struct rtnl_class *filter;
71 
72 	filter = nl_cli_class_alloc();
73 
74 	rtnl_tc_set_parent(TC_CAST(filter), rtnl_tc_get_handle(tc));
75 	rtnl_tc_set_ifindex(TC_CAST(filter), rtnl_tc_get_ifindex(tc));
76 
77 	nl_cache_foreach_filter(class_cache, OBJ_CAST(filter), &print_class, arg);
78 
79 	rtnl_class_put(filter);
80 }
81 
print_qdisc(struct nl_object * obj,void * arg)82 static void print_qdisc(struct nl_object *obj, void *arg)
83 {
84 	struct rtnl_qdisc *qdisc = (struct rtnl_qdisc *) obj;
85 	struct nl_cache *cls_cache;
86 	uint32_t parent = rtnl_tc_get_handle((struct rtnl_tc *) qdisc);
87 
88 	params.dp_prefix = (int)(long) arg;
89 	nl_object_dump(obj, &params);
90 
91 	print_tc_childs(TC_CAST(qdisc), (char *) arg + 2);
92 
93 	if (rtnl_cls_alloc_cache(sock, ifindex, parent, &cls_cache) < 0)
94 		return;
95 
96 	params.dp_prefix = (int)(long) arg + 2;
97 	nl_cache_dump(cls_cache, &params);
98 	nl_cache_free(cls_cache);
99 }
100 
print_link(struct nl_object * obj,void * arg)101 static void print_link(struct nl_object *obj, void *arg)
102 {
103 	struct rtnl_link *link = (struct rtnl_link *) obj;
104 	struct rtnl_qdisc *qdisc;
105 
106 	ifindex = rtnl_link_get_ifindex(link);
107 	params.dp_prefix = 0;
108 	nl_object_dump(obj, &params);
109 
110 	if (rtnl_class_alloc_cache(sock, ifindex, &class_cache) < 0)
111 		return;
112 
113 	qdisc = rtnl_qdisc_get_by_parent(qdisc_cache, ifindex, TC_H_ROOT);
114 	if (qdisc) {
115 		print_qdisc((struct nl_object *) qdisc, (void *) 2);
116 		rtnl_qdisc_put(qdisc);
117 	}
118 
119 	qdisc = rtnl_qdisc_get_by_parent(qdisc_cache, ifindex, 0);
120 	if (qdisc) {
121 		print_qdisc((struct nl_object *) qdisc, (void *) 2);
122 		rtnl_qdisc_put(qdisc);
123 	}
124 
125 	qdisc = rtnl_qdisc_get_by_parent(qdisc_cache, ifindex, TC_H_INGRESS);
126 	if (qdisc) {
127 		print_qdisc((struct nl_object *) qdisc, (void *) 2);
128 		rtnl_qdisc_put(qdisc);
129 	}
130 
131 	nl_cache_free(class_cache);
132 }
133 
main(int argc,char * argv[])134 int main(int argc, char *argv[])
135 {
136 	struct nl_cache *link_cache;
137 
138 	sock = nl_cli_alloc_socket();
139 	nl_cli_connect(sock, NETLINK_ROUTE);
140 	link_cache = nl_cli_link_alloc_cache(sock);
141 	qdisc_cache = nl_cli_qdisc_alloc_cache(sock);
142 
143 	params.dp_fd = stdout;
144 
145 	for (;;) {
146 		int c, optidx = 0;
147 		static struct option long_opts[] = {
148 			{ "format", 1, 0, 'f' },
149 			{ "help", 0, 0, 'h' },
150 			{ "version", 0, 0, 'v' },
151 			{ 0, 0, 0, 0 }
152 		};
153 
154 		c = getopt_long(argc, argv, "f:hv", long_opts, &optidx);
155 		if (c == -1)
156 			break;
157 
158 		switch (c) {
159 		case 'f': params.dp_type = nl_cli_parse_dumptype(optarg); break;
160 		case 'h': print_usage(); break;
161 		case 'v': nl_cli_print_version(); break;
162 		}
163 	}
164 
165 	nl_cache_foreach(link_cache, &print_link, NULL);
166 
167 	return 0;
168 }
169