1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (c) 2003-2010 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/tc.h>
12 #include <netlink/cli/qdisc.h>
13 #include <netlink/cli/link.h>
14
15 static int quiet = 0, default_yes = 0, deleted = 0, interactive = 0;
16 static struct nl_sock *sock;
17
print_usage(void)18 static void print_usage(void)
19 {
20 printf(
21 "Usage: nl-qdisc-delete [OPTION]... [QDISC]\n"
22 "\n"
23 "OPTIONS\n"
24 " --interactive Run interactively.\n"
25 " --yes Set default answer to yes.\n"
26 " -q, --quiet Do not print informal notifications.\n"
27 " -h, --help Show this help text and exit.\n"
28 " -v, --version Show versioning information and exit.\n"
29 "\n"
30 " -d, --dev=DEV Device the qdisc is attached to.\n"
31 " -p, --parent=ID Identifier of parent qdisc/class.\n"
32 " -i, --id=ID Identifier\n"
33 " -k, --kind=NAME Kind of qdisc (e.g. pfifo_fast)\n"
34 );
35
36 exit(0);
37 }
38
delete_cb(struct nl_object * obj,void * arg)39 static void delete_cb(struct nl_object *obj, void *arg)
40 {
41 struct rtnl_qdisc *qdisc = nl_object_priv(obj);
42 struct nl_dump_params params = {
43 .dp_type = NL_DUMP_LINE,
44 .dp_fd = stdout,
45 };
46 int err;
47
48 /* Ignore default qdiscs, unable to delete */
49 if (rtnl_tc_get_handle((struct rtnl_tc *) qdisc) == 0)
50 return;
51
52 if (interactive && !nl_cli_confirm(obj, ¶ms, default_yes))
53 return;
54
55 if ((err = rtnl_qdisc_delete(sock, qdisc)) < 0)
56 nl_cli_fatal(err, "Unable to delete qdisc: %s\n", nl_geterror(err));
57
58 if (!quiet) {
59 printf("Deleted ");
60 nl_object_dump(obj, ¶ms);
61 }
62
63 deleted++;
64 }
65
main(int argc,char * argv[])66 int main(int argc, char *argv[])
67 {
68 struct rtnl_qdisc *qdisc;
69 struct rtnl_tc *tc;
70 struct nl_cache *link_cache, *qdisc_cache;
71 int nfilter = 0;
72
73 sock = nl_cli_alloc_socket();
74 nl_cli_connect(sock, NETLINK_ROUTE);
75 link_cache = nl_cli_link_alloc_cache(sock);
76 qdisc_cache = nl_cli_qdisc_alloc_cache(sock);
77 qdisc = nl_cli_qdisc_alloc();
78 tc = (struct rtnl_tc *) qdisc;
79
80 for (;;) {
81 int c, optidx = 0;
82 enum {
83 ARG_YES = 257,
84 ARG_INTERACTIVE = 258,
85 };
86 static struct option long_opts[] = {
87 { "interactive", 0, 0, ARG_INTERACTIVE },
88 { "yes", 0, 0, ARG_YES },
89 { "quiet", 0, 0, 'q' },
90 { "help", 0, 0, 'h' },
91 { "version", 0, 0, 'v' },
92 { "dev", 1, 0, 'd' },
93 { "parent", 1, 0, 'p' },
94 { "id", 1, 0, 'i' },
95 { "kind", 1, 0, 'k' },
96 { 0, 0, 0, 0 }
97 };
98
99 c = getopt_long(argc, argv, "qhvd:p:i:k:", long_opts, &optidx);
100 if (c == -1)
101 break;
102
103 switch (c) {
104 case '?': nl_cli_fatal(EINVAL, "Invalid options");
105 case ARG_INTERACTIVE: interactive = 1; break;
106 case ARG_YES: default_yes = 1; break;
107 case 'q': quiet = 1; break;
108 case 'h': print_usage(); break;
109 case 'v': nl_cli_print_version(); break;
110 case 'd':
111 nfilter++;
112 nl_cli_tc_parse_dev(tc, link_cache, optarg);
113 break;
114 case 'p':
115 nfilter++;
116 nl_cli_tc_parse_parent(tc, optarg);
117 break;
118 case 'i':
119 nfilter++;
120 nl_cli_tc_parse_handle(tc, optarg, 0);
121 break;
122 case 'k':
123 nfilter++;
124 nl_cli_tc_parse_kind(tc, optarg);
125 break;
126 }
127 }
128
129 if (nfilter == 0 && !interactive && !default_yes) {
130 nl_cli_fatal(EINVAL,
131 "You are attempting to delete all qdiscs on all devices.\n"
132 "If you want to proceed, run nl-qdisc-delete --yes.\n"
133 "Aborting...");
134 }
135
136 nl_cache_foreach_filter(qdisc_cache, OBJ_CAST(qdisc), delete_cb, NULL);
137
138 if (!quiet)
139 printf("Deleted %d qdiscs\n", deleted);
140
141 return 0;
142 }
143